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1.
Braz. j. biol ; 83: e242708, 2023. tab
Article in English | LILACS, VETINDEX | ID: biblio-1339382

ABSTRACT

Abstract MicroRNAs (miRNAs) are essential nonprotein-coding genes. In a range of organisms, miRNAs has been reported to play an essential role in regulating gene expressions at post-transcriptional level. They participate in most of the stress responsive processes in plants. Drought is an ultimate abiotic stress that affects the crop production. Therefore understanding drought stress responses are essential to improve the production of agricultural crops. Throughout evolution, plants have developed their own defense systems to cope with the adversities of environmental stresses. Among defensive mechanisms include the regulations of gene expression by miRNAs. Drought stress regulates the expression of some of the functionally conserved miRNAs in different plants. The given properties of miRNAs provide an insight to genetic alterations and enhancing drought resistance in cereal crops. The current review gives a summary to regulatory mechanisms in plants as well as miRNAs response to drought stresses in cereal crops. Some possible approaches and guidelines for the exploitation of drought stress miRNA responses to improve cereal crops are also described.


Resumo MicroRNAs (miRNAs) são genes essenciais não codificadores de proteínas. Em uma variedade de organismos, foi relatado que miRNAs desempenham papel essencial na regulação da expressão gênica em nível pós-transcricional. Eles participam da maioria dos processos responsivos ao estresse nas plantas. A seca é um estresse abiótico final que afeta a produção agrícola. Portanto, compreender as respostas ao estresse da seca é essencial para melhorar a produção de safras agrícolas. Ao longo da evolução, as plantas desenvolveram seus próprios sistemas de defesa para lidar com as adversidades do estresse ambiental. Entre os mecanismos de defesa está a regulação da expressão gênica por miRNAs. O estresse hídrico regula a expressão de alguns dos miRNAs funcionalmente conservados em diferentes plantas. As propriedades dadas dos miRNAs fornecem uma visão das alterações genéticas e aumentam a resistência à seca nas safras de cereais. A revisão atual apresenta um resumo dos mecanismos regulatórios nas plantas, bem como a resposta dos miRNAs ao estresse hídrico nas plantações de cereais. Algumas abordagens e diretrizes possíveis para a exploração das respostas do miRNA ao estresse da seca para melhorar as safras de cereais também são descritas.


Subject(s)
MicroRNAs/genetics , Droughts , Stress, Physiological/genetics , Crops, Agricultural/genetics , Crop Production
2.
Int. j. morphol ; 40(3): 735-741, jun. 2022. ilus, tab
Article in English | LILACS-Express | LILACS | ID: biblio-1385656

ABSTRACT

SUMMARY: This study is to investigate the regulation of Notch1 and Foxp1 by miR-34a in the development of psoriasis vulgaris. RT-PCR was used to compare the levels of miR-34a in the skin lesions of 20 patients with psoriasis vulgaris and 20 normal skin tissues. Immunohistochemistry was used to detect the expression of Notch1 and Foxp1 in 51 patients with psoriasis vulgaris, which were further compared with that in 29 normal control tissues. In addition, in HaCaT cells, we used miR-34a mimics and inhibitors to overexpress and inhibit miR-34a, respectively, and detected the mRNA and protein levels of miR-34a, Notch1, and Foxp1. The level of miR-34a in the skin lesions of patients with psoriasis vulgaris was significantly higher than that in normal skin tissues (t=2.192, P<0.05). The positive rate of Notch1 in the skin lesions of patients with psoriasis vulgaris was 76.47 %, which was significantly higher than that in normal skin tissues (13.79 %) (t=29.215, P<0.01). The positive rate of FOXP1 in the psoriasis vulgaris group was 92.16 %, which was also significantly higher than that in the normal skin group (65.52 %) (t=9.087, P<0.01). In addition, overexpression of miR-34a significantly promoted the expression of Notch1 and Foxp1. However, inhibition of miR-34a significantly reduced Notch1 and Foxp1 levels. miR- 34a is highly expressed in the skin tissues of patients with psoriasis vulgaris, and may participate in the development of psoriasis vulgaris by regulating Notch1 and Foxp1.


RESUMEN: El objetivo de este estudio fue investigar la regulación de Notch1 y Foxp1 por miR-34a en el desarrollo de la psoriasis vulgar. Se utilizó RT-PCR con el fin de comparar los niveles de miR-34a en las lesiones cutáneas de 20 pacientes con psoriasis vulgar y 20 tejidos de piel normales. Se utilizó inmunohistoquímica para detectar la expresión de Notch1 y Foxp1 en 51 pacientes con psoriasis vulgar, que se compararon además con la de 29 tejidos normales control. Además, en las células HaCaT, usamos miméticos e inhibidores de miR-34a para sobreexpresar e inhibir miR-34a, respectivamente, y detectamos los niveles de ARNm y proteína de miR-34a, Notch1 y Foxp1. El nivel de miR- 34a en las lesiones cutáneas de pacientes con psoriasis vulgar fue significativamente mayor que en los tejidos normales de la piel (t=2,192, P<0,05). La tasa de positividad de Notch1 en las lesiones cutáneas de pacientes con psoriasis vulgar fue del 76,47 %, que fue significativamente mayor que la de los tejidos normales de la piel (13,79 %) (t=29,215, P<0,01). La tasa positiva de FOXP1 en el grupo de psoriasis vulgar fue del 92,16 %, que también fue significativamente mayor que la del grupo de piel normal (65,52 %) (t=9,087, P<0,01). Además, la sobreexpresión de miR-34a promovió significativamente la expresión de Notch1 y Foxp1. Sin embargo, la inhibición de miR-34a redujo de manera importante los niveles de Notch1 y Foxp1. miR-34a se expresa en gran medida en los tejidos de la piel en pacientes con psoriasis vulgar y puede participar en el desarrollo de la psoriasis vulgar mediante la regulación de Notch1 y Foxp1.


Subject(s)
Humans , Psoriasis/genetics , MicroRNAs/genetics , Forkhead Transcription Factors/genetics , Receptor, Notch1/genetics , Psoriasis/metabolism , Immunohistochemistry , Transfection , Blotting, Western , Reverse Transcriptase Polymerase Chain Reaction , MicroRNAs/metabolism , Forkhead Transcription Factors/metabolism , Receptor, Notch1/metabolism
3.
Journal of Integrative Medicine ; (12): 453-462, 2022.
Article in English | WPRIM | ID: wpr-939897

ABSTRACT

OBJECTIVE@#Rheumatoid arthritis (RA) progression is associated with the balance of T-regulatory (Treg) and T-helper 17 (Th17) cells, while the role of microRNAs (miRs) in regulating Treg/Th17 cell balance has not been clarified. This study aimed to assess whether moxibustion could regulate Treg/Th17 cell balance by modulating the miR-221/suppressor of cytokine signaling 3 (SOCS3) axis in the RA mouse model.@*METHODS@#A mouse model of collagen-induced arthritis (CIA) was established in male DBA/1J mice. Twenty-two days after CIA induction, the mice received daily treatment with moxibustion for 12 times. Pathological scores were assessed according to the levels of synovial hyperplasia. The expression levels of cytokines interleukin (IL)-1β, IL-6, tumor necrosis factor-α (TNF-α), interferon-γ (IFN-γ), IL-17 and IL-10 were analyzed in serum by enzyme-linked immunosorbent assay. The cluster of differentiation 4 (CD4+) splenocytes was analyzed by fluorescence-activated cell sorting. The expression levels of RA-related miRs and target genes were subsequently detected, and the target of miR-221 was confirmed by the dual-luciferase reporter assay.@*RESULTS@#It was revealed that moxibustion treatment decreased the pathological scores and downregulated the expression levels of IL-1β, IL-6, TNF-α, IFN-γ and IL-17, while upregulated the expression level of IL-10. The Treg/Th17 cell balance was regulated by moxibustion treatment. The expression level of miR-221 was suppressed by moxibustion treatment. Furthermore, SOCS3 was found as the direct target of miR-221, which mediated the function of moxibustion by regulating the Treg/Th17 cell balance.@*CONCLUSION@#Moxibustion therapy regulated the Treg/Th17 cell balance by modulating the miR-221/SOCS3 axis in the RA mouse model.


Subject(s)
Animals , Arthritis, Experimental/therapy , Arthritis, Rheumatoid/therapy , Cytokines , Disease Models, Animal , Interleukin-10 , Interleukin-17 , Interleukin-6 , Male , Mice , Mice, Inbred DBA , MicroRNAs/genetics , Moxibustion , T-Lymphocytes, Regulatory , Th17 Cells/pathology , Tumor Necrosis Factor-alpha
4.
Article in English | WPRIM | ID: wpr-939825

ABSTRACT

Mammalian bone is constantly metabolized from the embryonic stage, and the maintenance of bone health depends on the dynamic balance between bone resorption and bone formation, mediated by osteoclasts and osteoblasts. It is widely recognized that circadian clock genes can regulate bone metabolism. In recent years, the regulation of bone metabolism by non-coding RNAs has become a hotspot of research. MicroRNAs can participate in bone catabolism and anabolism by targeting key factors related to bone metabolism, including circadian clock genes. However, research in this field has been conducted only in recent years and the mechanisms involved are not yet well established. Recent studies have focused on how to target circadian clock genes to treat some diseases, such as autoimmune diseases, but few have focused on the co-regulation of circadian clock genes and microRNAs in bone metabolic diseases. Therefore, in this paper we review the progress of research on the co-regulation of bone metabolism by circadian clock genes and microRNAs, aiming to provide new ideas for the prevention and treatment of bone metabolic diseases such as osteoporosis.


Subject(s)
Animals , Circadian Clocks/genetics , Circadian Rhythm/genetics , Mammals/genetics , MicroRNAs/genetics , Osteogenesis/genetics , Osteoporosis/genetics
5.
Article in Chinese | WPRIM | ID: wpr-939689

ABSTRACT

OBJECTIVE@#To analyze the relationship between serum miR-34a level and thrombocytopenia after chemotherapy in patients with diffuse large B-cell lymphoma (DLBCL).@*METHODS@#A total of 69 eligible DLBCL patients who received chemotherapy in our hospital from January 2018 to January 2020 were prospectively included as the research subjects, all patients received R-CHOP 21 regimen (rituximab + cyclophosphamide + adriamycin + vincristine + prednisone) for chemotherapy, 3 weeks was 1 cycle, and 2 cycles of chemotherapy were used. The patients were divided into a reduction group and a non reduction group according to whether there was thrombocytopenia after chemotherapy, the general data and laboratory indexes of the two groups were investigated and compared, the relationship between serum miR-34a before chemotherapy and thrombocytopenia after chemotherapy in patients was analyzed.@*RESULTS@#Among the 69 DLBCL patients, 36 patients developed thrombocytopenia after 2 cycles of R-CHOP 21 regimen for chemotherapy, the incidence was 52.17%; the level of serum IL-11 and the relative expression of miR-34a mRNA in the reduction group were significantly lower than the non reduction group (P<0.05), compared other data between groups, there was no statistical significant difference (P>0.05); after Logistic regression analysis, the results showed that the level of serum IL-11 and the relative expression of miR-34a mRNA were related to thrombocytopenia after chemotherapy in DLBCL patients, low expression of each index may be a risk factor of thrombocytopenia after chemotherapy in DLBCL patients (OR>1, P<0.05); ROC curve was drawn, and the results showed that the AUC of serum IL-11 level and miR-34a mRNA relative expression before chemotherapy alone and in combination predicted the risk of thrombocytopenia after chemotherapy in DLBCL patients were all >0.80, and the predictive value was ideal, when the cut-off value of serum IL-11 level before chemotherapy was 42.094 pg/ml, and the cut-off value of miR-34a mRNA relative expression was 3.894, the combined prediction value was the best.@*CONCLUSION@#The relative expression of miR-34a mRNA is associated with thrombocytopenia after chemotherapy in DLBCL patients, which may be a risk factor for thrombocytopenia in patients after chemotherapy, has certain value in predicting the risk of thrombocytopenia of patients after chemotherapy.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Cyclophosphamide , Doxorubicin , Humans , Interleukin-11/therapeutic use , Lymphoma, Large B-Cell, Diffuse/genetics , MicroRNAs/genetics , Prednisone/therapeutic use , Prognosis , RNA, Messenger , Rituximab/therapeutic use , Thrombocytopenia , Vincristine
6.
Article in English | WPRIM | ID: wpr-939586

ABSTRACT

Objective@#Most acute promyelocytic leukemia cases are characterized by the PML-RARa fusion oncogene and low white cell counts in peripheral blood.@*Methods@#Based on the frequent overexpression of miR-125-family miRNAs in acute promyelocytic leukemia, we examined the consequence of this phenomenon by using an inducible mouse model overexpressing human miR-125b.@*Results@#MiR-125b expression significantly accelerates PML-RARa-induced leukemogenesis, with the resultant induced leukemia being partially dependent on continued miR-125b overexpression. Interestingly, miR-125b expression led to low peripheral white cell counts to bone marrow blast percentage ratio, confirming the clinical observation in acute promyelocytic leukemia patients.@*Conclusion@#This study suggests that dysregulated miR-125b expression is actively involved in disease progression and pathophysiology of acute promyelocytic leukemia, indicating that targeting miR-125b may represent a new therapeutic option for acute promyelocytic leukemia.


Subject(s)
Animals , Humans , Leukemia, Promyelocytic, Acute/metabolism , Mice , MicroRNAs/genetics , Oncogene Proteins, Fusion/therapeutic use
7.
Article in Chinese | WPRIM | ID: wpr-939510

ABSTRACT

OBJECTIVE@#To observe the effect of moxibustion on the regulation of nuclear factor-kappa B (NF-κB) and inflammatory factors by multiple microRNAs (miRNAs) in rats with diarrhea-predominant irritable bowel syndrome (IBS-D), and to explore the anti-inflammatory mechanism of moxibustion on IBS-D.@*METHODS@#Twelve of 52 newborn rats were randomly selected into a normal group. The remaining rats were made into IBS-D model. A total of 36 rats with successful model were randomly divided into a model group, a medication group and a moxibustion group, 12 rats in each group. The rats in the medication group were intraperitoneally injected with pyrrolidine dithiocarbamate (PDTC). The rats in the moxibustion group were treated with moxibustion at "Tianshu" (ST 25) and "Shangjuxu" (ST 37) for 20 min each time. All the intervention was given once a day for 7 days. Before and after modeling as well as after intervention, the body mass, loose stool rate and the minimum volume threshold of abdominal withdrawal reflex (AWR) were measured. After intervention, the contents of serum tumor necrosis factor α (TNF-α), interleukin (IL)-1β and IL-8 were detected by ELISA method; the morphology of colon tissues was observed by HE staining, and the expressions of miR-155, miR-125b, miR-29b, miR-31, miR-18a and NF-κB p65 mRNA in colon tissues were detected by real-time PCR. The expressions of NF-κB p65, TNF-α, IL-1β and IL-8 protein in colon tissues were detected by immunofluorescence.@*RESULTS@#After modeling, the body mass and the minimum volume threshold of AWR in the model group were lower than those in the normal group (P<0.01); the rates of loose stool in the model group were higher than those in the normal group (P<0.01); after intervention, in the model group, the inflammatory infiltration of colon tissues was obvious, and the serum levels of TNF-α, IL-1 β, IL-8 were higher than those in the normal group (P<0.05); the expression of miR-155, miR-125b, miR-29b, miR-31, miR-18a and NF-κB p65 mRNA in colon tissues was higher than that in the normal group (P<0.05); the protein expression of NF-κB p65, TNF-α, IL-1β, IL-8 was also higher than that in the normal group (P<0.01). After intervention, the body mass and the minimum volume threshold of AWR in the medication group and the moxibustion group were both higher than those in the model group (P<0.05); the loose stool rate in the medication group and the moxibustion group were lower than those in model group (P<0.05); the inflammatory cells infiltration in the colon tissues was less, the serum levels of TNF-α, IL-1β and IL-8 as well as the protein expression of NF-κB p65, TNF-α, IL-1β and IL-8 in the colon tissues in the medication group and the moxibustion group were lower than those in the model group (P<0.05, P<0.01). The expression of miR-125b, miR-31, miR-18a and NF-κB p65 mRNA in the medication group were lower than those in the model group (P<0.05). The expression of miR-155, miR-125b, miR-29b, miR-31, miR-18a and NF-κB p65 mRNA in the moxibustion group were lower than those in the model group (P<0.05). The miR-155, miR-125b, miR-29b, miR-31, miR-18a were positively correlated with NF-κB p65 mRNA (0<r<1, P<0.01).@*CONCLUSION@#The anti-inflammatory mechanism of moxibustion at "Tianshu" (ST 25) and "Shangjuxu" (ST 37) for IBS-D rats may be related to regulating multiple miRNAs to inhibit NF-κB signal pathway and reduce the expression of inflammatory factors.


Subject(s)
Animals , Diarrhea/therapy , Interleukin-8/genetics , Irritable Bowel Syndrome/therapy , MicroRNAs/genetics , Moxibustion , NF-kappa B/metabolism , RNA, Messenger , Rats , Rats, Sprague-Dawley , Signal Transduction , Tumor Necrosis Factor-alpha/genetics
8.
Chinese Journal of Burns ; (6): 84-89, 2022.
Article in Chinese | WPRIM | ID: wpr-935980

ABSTRACT

Wound healing, as one of the important public health issues, has been a worldwide problem. Due to the unique biological wound environment, wound healing is a very complex process with current treatments requiring long cycles, being poorly effective, and bringing high economic burden to patients. An increasing number of studies have shown that non-coding RNAs (ncRNAs) play important roles in wound healing process. The competing endogenous RNAs (ceRNAs) hypothesis in recent years is a new proposal on the inter-regulation of RNAs, which suggests a "mode of communication" between different RNAs. ceRNA regulatory network (ceRNET) combines the functions of protein-coding mRNA with ncRNA (e.g., microRNA, long non-coding RNA, pseudogenes, and circular RNA). Recent studies have shown that ceRNAs play important roles in wound healing, which may provide new effective therapeutic targets for wound healing. This paper starting with ceRNET systematically reviewed the research progress on the effects of various ceRNAs in wound healing and the future research challenges, with the aim to deeply explore the molecular mechanisms and clinical significance of ceRNAs in the process of wound healing.


Subject(s)
Gene Regulatory Networks , Humans , MicroRNAs/genetics , RNA, Circular , RNA, Long Noncoding , Wound Healing/genetics
9.
Article in Chinese | WPRIM | ID: wpr-935802

ABSTRACT

Arsenic is a non-metallic element, and the International Agency for Research on Cancer has identified arsenic and its compounds as carcinogens. Arsenic and its compounds can be absorbed through the respiratory tract, skin and digestive tract, distributed in the liver, kidney, lung and skin, and cause damage. Non-coding RNAs are closely related to arsenic-induced nervous system disorders, cell necrosis, reproductive toxicity, and carcinogenesis. In recent years, the network regulation of microRNAs (miRNAs) , long non-coding RNAs (lncRNAs) , and circular RNAs (circRNAs) among non-coding RNAs in various diseases induced by arsenic has become a new research field. This paper summarizes the existing scientific research results, and expounds the mechanism of miRNAs, lncRNAs and circRNAs in arsenic toxicity, and provides basic data and theoretical basis for the prevention and treatment of arsenic poisoning.


Subject(s)
Arsenic/toxicity , Arsenic Poisoning , Humans , MicroRNAs/genetics , RNA, Circular , RNA, Long Noncoding/genetics
10.
Chinese Journal of Oncology ; (12): 334-340, 2022.
Article in Chinese | WPRIM | ID: wpr-935217

ABSTRACT

Objective: To explore the effect and mechanism of Casticin (CAS) on the proliferation, migration and invasion of bladder cancer T24 cells. Methods: T24 cells were cultured in vitro and divided into control group, 5, 10, 20 μmol/L CAS groups, si-NC group, si-TM7SF4 group, CAS+ pcDNA group and CAS+ pcDNA-TM7SF4 group. Cell counting kit-8 (CCK-8) was used to detect cell proliferation; Transwell was used to detect cell migration and invasion; western blot was used to detect the protein expressions of cyclin D1, p21, MMP-2, MMP-9 and TM7SF4, and real-time quantitative reverse transcription polymerase chain reaction (RT-qPCR) was used to detect the expression of TM7SF4 mRNA. Results: The inhibition rates of T24 cells in the 5, 10, 20 μmol/L CAS groups were (17.68±1.41)%, (33.54±3.16)% and (61.44±5.50)%, respectively, higher than (0.00±0.00)% of the control group (P<0.001), but the numbers of migration and invasion were 72.83±5.66, 59.13±4.27, 41.25±3.22 and 55.83±5.15, 42.19±3.06, 31.13±3.22, respectively, lower than 86.11±5.16 and 68.82±5.29 of the control group (P<0.001). The protein expression levels of cyclin D1, MMP-2, MMP-9, TM7SF4 and the expression levels of TM7SF4 mRNA in the 5, 10, and 20 μmol/L CAS groups were lower than the control group (P<0.001). However, the protein expression levels of p21 were 0.37±0.03, 0.51±0.04, and 0.66±0.06, respectively, higher than 0.25±0.03 in the control group (P<0.001). The inhibition rate of T24 cells in the si-TM7SF4 group was (50.35±4.67)%, higher than (6.31±0.58)% in the si-NC group (P<0.001), but the numbers of migration and invasion were 53.51±4.18 and 42.92±3.81, lower than 85.26±4.99 and 67.93±4.64 of the si-NC group (P<0.001). The protein expression levels of TM7SF4, CyclinD1, MMP-2, MMP-9 in the si-TM7SF4 group were lower than the si-NC group (P<0.001). However, the protein expression level of p21 in the si-TM7SF4 group was higher than the si-NC group (P<0.001). The inhibitory rate of T24 cells in the CAS+ pcDNA-TM7SF4 group was (21.45±2.46)%, lower than (64.06±4.49)% of the CAS+ pcDNA group (P<0.001), but the number of migration and invasion in the CAS+ pcDNA-TM7SF4 group were 75.66±6.57 and 59.35±5.40, higher than 40.43±3.85 and 30.25±3.32 in the CAS+ pcDNA group (P<0.001). The protein expression levels of TM7SF4, CyclinD1, MMP-2 and MMP-9 in the CAS+ pcDNA-TM7SF4 group were higher than the CAS+ pcDNA group (P<0.001), but the protein expression level of p21 was lower than the CAS+ pcDNA group (P<0.001). Conclusion: CAS may suppress the proliferation, migration and invasion of bladder cancer T24 cells by inhibiting the expression of TM7SF4.


Subject(s)
Cell Line, Tumor , Cell Movement , Cell Proliferation , Cyclin D1 , Female , Flavonoids , Humans , Male , Matrix Metalloproteinase 2/genetics , Matrix Metalloproteinase 9/genetics , MicroRNAs/genetics , RNA, Messenger , Urinary Bladder Neoplasms/genetics
11.
Chinese Journal of Oncology ; (12): 246-251, 2022.
Article in Chinese | WPRIM | ID: wpr-935207

ABSTRACT

Objective: To investigate the relationship between the expression of integrin α 6 (ITGA6), miR-4484 and the pathologic stage of gastric cancer. Methods: Gastric cancer tissues and normal gastric mucosa tissues adjacent to cancer (>5 cm from tumor margin) of 30 patients with primary gastric cancer who underwent direct surgical resection without adjuvant therapy from June to September 2017 in West China Hospital of Sichuan University were selected. Real-time quantitative polymerase chain reaction (PCR) was used to detect the expression levels of miR-4484 and ITGA6, western blot was used to detect the expression level of ITGA6 protein, dual luciferase reporter gene was used to verify the relationship between ITGA6 and miR-4484. Spearman's correlation analysis was used to determine the relationship between miR-4484 and ITGA6 expression levels in gastric cancer tissues. Results: The expression level of ITGΑ6 in gastric cancer (32.30±13.47) was higher than that in matched normal gastric tissues (24.55±10.25, P=0.015), the area under the receiver operating characteristic (ROC) curve was 0.660 and the diagnostic sensitivity and specificity were 43.3% and 96.7%, respectively. The expression level of miR-4484 in gastric cancer (4.11±2.87) was lower than that of matched normal gastric tissues (5.75±2.80, P=0.029), the area under the ROC curve was 0.690 and the diagnostic sensitivity and specificity were 30.0% and 86.7%, respectively. The expression level of miR-4484 was negatively correlated with ITGA6 in gastric cancer tissues (r=-0.621, P<0.001). The expression level of ITGA6 protein in gastric cancer tissues (0.65±0.19) was higher than that in normal adjacent tissues (0.26±0.12, P<0.001). Compared with ITGA6 3'UTR wild-type+ miR-NC group, ITGA6 3'UTR wild-type+ miRNA mimics group had lower luciferase activity (50.69±5.10, 34.00±1.19, P<0.001), while the luciferase activity of ITGA6 3'UTR wild-type+ ASO miR-4484 group was higher than that of ITGA6 3'UTR wild-type+ miR-NC group (82.44±6.37, 50.69±5.10, P<0.001), indicated that ITGA6 was the direct target gene of miR-4484. The expression levels of miR-4484 in T1, T2, T3 and T4 (4a and 4b) gastric cancer tissues were 9.98±2.24, 5.28±2.03, 2.92±2.04 and 4.11±2.87, respectively, with statistical significance (P<0.001). The expression levels of ITGA6 in N0, N1, N2 and N3 gastric cancer tissues were 29.55±8.32, 21.71±3.75, 24.60±8.79 and 40.69±15.83, respectively, with statistical significance (P=0.022). The expression levels of miR-4484 in N0, N1, N2 and N3 gastric cancer tissues were 5.01±3.52, 5.48±2.76, 5.88±1.83 and 2.30±1.56, respectively, with statistical significance (P=0.032). The expression levels of ITGA6 in M0 and M1 gastric cancer tissues were 26.28±7.66 and 52.08±8.12, respectively, with statistical significance (P<0.001). The expression levels of miR-4484 in M0 and M1 gastric cancer tissues were 4.95±2.74 and 1.34±0.80, respectively, with statistical significance (P<0.001). Conclusions: ITGA6 is upregulated in gastric cancer tissues, while miR-4484 is downregulated in the gastric cancer group, and its expression level is related to the clinicopathological features of gastric cancer. ITGA6 is the direct target gene of miR-4484, implicates that miR-4484 may inhibit the invasion and metastasis of gastric cancer by regulating the expression of ITGA6. Both miR-4484 and ITGA6 may be the new prognostic markers and potential therapeutic targets of gastric cancer.


Subject(s)
3' Untranslated Regions , China , Humans , Integrin alpha6/genetics , MicroRNAs/genetics , Stomach Neoplasms/pathology
12.
Chinese Journal of Oncology ; (12): 238-245, 2022.
Article in Chinese | WPRIM | ID: wpr-935206

ABSTRACT

Objective: To investigate the molecular mechanism of circZNF609 targeting miR-153 to regulate the proliferation and apoptosis of diffuse large B-cell lymphoma. Methods: Fifty cases of lymphoma tissue from patients with diffuse large B-cell lymphoma who were diagnosed and treated in the First Affiliated Hospital of Zhengzhou University from July 2018 to December 2019 were collected. Thirty cases of normal lymph node tissues that were confirmed to be reactive hyperplasia by pathological diagnosis during the same period were selected as controls. Real time quantitative polymerase chain reaction (PCR) was used to detect the expression of circZNF609 in diffuse large B-cell lymphoma tissues and control hyperplasia lymph nodes. Diffuse large B-cell lymphoma OCI-LY19 cells were divided into control group (blank control), si-con group (transfected with siRNA control), si-ZNF609 group (transfected with circZNF609 siRNA), and si-ZNF609+ Anti-NC group (co-transfected with circZNF609 siRNA and inhibitor control) and si-ZNF609+ Anti-miR-153 group (co-transfected with circZNF609 siRNA and miR-153 inhibitor). Cell counting kit-8 (CCK-8) was used to detected proliferation, flow cytometry was used to detect cell cycle and apoptosis. Western blot was used to detect the protein expressions of C-caspase-3, cyclin D1, p21. The luciferase reporter system was used to identifie the relationship between circZNF609 and miR-153. Results: The expression level of circZNF609 in diffuse large B-cell lymphoma tissue was (1.44±0.22), higher than (0.37±0.14) in the control tissues (P<0.001). The cell survival rate of the si-ZNF609 group was (51.74±6.39)%, lower than (100.00±10.23)% of the control group and the (99.64±11.67)% of the si-con group (P<0.001). The proportion of cells in the G(0)/G(1) phase was (63.25±4.11)%, higher than (48.62±4.32)% of the control group and (47.12±3.20)% of the si-con group (P<0.001), the apoptosis rate was (13.36±1.42)%, higher than (3.65±0.47)% of the control group and (3.84±0.62)% of the si-con group (P<0.05). The expression levels of C-caspase-3 and p21 protein were (0.85±0.09) and (0.90±0.08), higher than (0.38±0.04) and (0.65±0.07) in the control group and (0.39±0.05) and (0.66±0.05) in the si-con group (P<0.001). The expression level of cyclin D1 protein was (0.40±0.03), lower than (0.52±0.06) of the control group and (0.53±0.04) of the si-con group (all P<0.001). CircZNF609 and miR-153 are mutually targeted. The cell survival rate of the si-ZNF609+ Anti-miR-153 group was (169.92±13.25)%, higher than (100.00±9.68)% of the si-ZNF609+ Anti-NC group (P<0.001), the ratio of cells in G(0)/G(1) phase and apoptosis rate were (52.01±3.62)% and (8.20±0.87)%, respectively, lower than (64.51±5.17)% and (14.03±1.17)% in the si-ZNF609+ Anti-NC group (P<0.001). The protein expression levels of C-caspase-3 and p21 were (0.42±0.06) and (0.52±0.06), lower than (0.80±0.07) and (0.92±0.10) of the si-ZNF609+ Anti-NC group (P<0.001). The protein expression level of cyclin D1 was (0.68±0.07), higher than (0.39±0.04) in the si-ZNF609+ Anti-NC group (P<0.001). Conclusion: Down-regulation of circZNF609 inhibits the proliferation of diffuse large B-cell lymphoma OCI-LY19 cells and induces apoptosis by targeting miR-153.


Subject(s)
Apoptosis/genetics , Cell Line, Tumor , Cell Proliferation/genetics , Gene Expression Regulation, Neoplastic , Humans , Lymphoma, Large B-Cell, Diffuse/pathology , MicroRNAs/genetics , RNA, Circular/genetics
13.
Chinese Journal of Oncology ; (12): 130-138, 2022.
Article in Chinese | WPRIM | ID: wpr-935192

ABSTRACT

Objective: To explore the expression of miR1290 in endometrial cancer tissues and its relationship with the pathological grade, and to find out the effect of miR1290 on biological characteristics of endometrial cancer cells and its mechanism. Methods: A total of 38 cases of endometrioid adenocarcinoma tissues, 10 cases of adjacent tissues and 23 cases of normal endometrial tissues were collected in Provincial Hospital Affiliated to Shandong University from May 2020 to October 2020. The expression of miR1290 was detected by reverse transcription polymerase chain reaction (RT-PCR). The expressions of miR1290 in endometrial cancer cells including KLE and Ishikawa were knocked down by lentiviral transfection. Cell counting kit 8 (CCK-8) test and colony formation test were used to detect cell proliferation ability, wound healing and Transwell test were used to detect cell invasion and migration ability, western blot was used to detect the expressions of epithelial-mesenchymal transition (EMT), phospholipids acylinositide 3-kinase (PI3K)/Akt and Wnt/β-catenin pathway related proteins. Results: The relative expressions of miR1290 in endometrial cancer tissues were 5.40±3.20, which was 1.55 times of normal endometrial tissues (P<0.01) and 1.75 times of adjacent tissues (P<0.01). The relative expressions of miR1290 in 17 cases of endometrial tissues at proliferative stage and 6 cases of endometrial tissues at secretory stage were 3.00±1.08 and 4.97±0.58, respectively, and the difference was statistically significant (P<0.01). In KLE cells and Ishikawa cells, the expression of miR1290 in miR1290 knockdown (Sh-miR1290) group was decreased when compared with the negative control (Sh-NC) group. The absorbance value of Sh-miR1290 group detected by the CCK-8 method and the colony formation rate detected by the colony formation experiment were both increased, the number of cells penetrating the basement membrane in the Transwell experiment and the wound healing rate in the scratch experiment were decreased (P<0.05). In KLE cells, knockdown of miR1290 reduced the expressions of EMT-related proteins including N-cadherin, Vimentin, Snail and Slug(P<0.05), and the expressions of PI3K and P-Akt/Akt (P<0.05), while there was no significant change in the expressions of Wnt and β-catenin (P>0.05). In Ishikawa cells, knockdown of miR1290 decreased the expressions of EMT-related proteins including N-cadherin, Snail and Slug, and the expressions of Wnt and β-catenin, increased the expression of E-cadherin (P<0.05), while there was no significant change in the expressions of PI3K and P-Akt/Akt (P>0.05). Conclusions: The expressions of miR1290 in endometrial cancer tissues are higher than that in the adjacent tissues and normal endometrial tissues. Knockdown of miR1290 expression can promote the proliferation of endometrial cancer cells, but inhibit cell invasion, migration and EMT ability through the PI3K/Akt and Wnt/β-catenin pathways.


Subject(s)
Cell Line, Tumor , Cell Movement , Cell Proliferation , Endometrial Neoplasms/genetics , Epithelial-Mesenchymal Transition , Female , Humans , MicroRNAs/genetics , Phosphatidylinositol 3-Kinases/metabolism , Wnt Signaling Pathway
14.
Chinese Journal of Cardiology ; (12): 501-508, 2022.
Article in Chinese | WPRIM | ID: wpr-935176

ABSTRACT

Objective: To identify the differentially expressed circular RNA (circRNA) in the myocardium of diabetic cardiomyopathy (DCM) mice, and analyze their possible biological functions and related regulatory network. Methods: C57BL/6 mice, aged 8 weeks, and weighing were 21-27 g. Eight mice were selected as the control group and 15 mice were selected as the experimental group. The diabetic mice model was established by intraperitoneal injection of streptozotocin in the experimental group. One week after injection, the fasting blood glucose level of mice was measured, and 12 diabetic mice were included in the final experimental group. All mice were fed for 12 weeks under the same laboratory conditions. The cardiac structure and function were detected by echocardiography. Diabetic mice with the left ventricular ejection fraction less than 60% and the E/A less than 1.6 were selected as DCM group (n=3). Mice in DCM group and control group were then sacrificed under deep anesthesia. RNA was extracted from myocardial tissue. High-throughput RNA sequencing technology was used to sequence and identify the RNA in the myocardial tissue of DCM group and normal control group, and the difference was analyzed by DeSeq2. The analysis results were verified at the tissue level by RT-qPCR, and the differential circRNA were analyzed by GO and KEGG pathway analysis. The differentially expressed circRNA-microRNA(miRNA) interaction was predicted by the miRNA target gene prediction software. Results: A total of 63 differentially expressed circRNAs were found in the myocardium of DCM mice. The results of RT-qPCR showed that the tissue level expression of 8 differentially expressed circRNAs was consistent with the sequencing results, of which 7 were up-regulated and 1 was down-regulated. KEGG pathway analysis showed that the up-regulated circRNAs was mainly related to AMPK signal pathway and intercellular adhesion junction pathway, and the down-regulated circRNA was mainly related to cardiomyopathy. Go analysis showed that the up-regulated circRNA was mainly related to the binding process of ions, proteins, kinases and other factors in terms of molecular function, and was involved in regulating the intracellular structure, especially the composition of organelles in terms of cell components. The functional analysis of molecular function and cell components showed that the up-regulated circRNA were related to the cell component origin, recruitment and tissue, and thus participated in the regulation of cell biological process. The down regulated circRNA was related to catalytic activity in terms of molecular function, protein kinase binding process, transferase and calmodulin activity, and was closely related to the components of contractile fibers and the composition of myofibrils. These differentially expressed circRNAs were also related to biological processes such as lysine peptide modification, sarcomere composition, myofibril assembly, morphological development of myocardial tissue, myocardial hypertrophy and so on. Conclusions: In this study, we detected the novel differentially expressed circRNAs in the myocardium of DCM mice, and bioinformatics analysis confirmed that these circRNAs are related to oxidative stress, fibrosis and death of cardiomyocytes, and finally participate in the pathophysiological process of DCM.


Subject(s)
Animals , Diabetes Mellitus, Experimental , Diabetic Cardiomyopathies/genetics , Gene Expression Profiling/methods , Mice , Mice, Inbred C57BL , MicroRNAs/genetics , Myocardium , RNA, Circular , Stroke Volume , Ventricular Function, Left
15.
Article in Chinese | WPRIM | ID: wpr-928758

ABSTRACT

OBJECTIVE@#To investigate the changes of gene sequencing and proteomics of apheresis platelet (AP) exosomes in different storage periods and predict the function of AP exosomes in different storage periods.@*METHODS@#Platelets at different storage periods of 0 day (D0), 3 day (D3) and 5 day (D5) were collected, exosomes were extracted with Gradient centrifugation; gene sequencing and proteomic analysis were used to analyze the exosomes, and biological functions of platelet exosomes were analyzed and predicted by bioinformatics. Liquid mass spectrometry (LMS) was used to detect the changes and function prediction of exosomes proteins. The small RNA sequencing library was prepared, and the constructed library was sequenced and bioinformatics technology was used for data analysis.@*RESULTS@#AP exosome iTRAQ protein analysis showed that AP exosomes stored in D3 with 55 up-regulated proteins and 94 down-regulated proteins (P<0.05, FC<0.83 or FC>1.2), while AP exosomes stored in D5 with 292 up-regulated proteins and 53 down-regulated proteins (P<0.05, FC<0.83 or FC>1.2) as compared with D0. KEGG pathway analysis showed that the proteins were mainly involved in transport and metabolism, immune system, cancer, membrane transport and other processes. There were statistically significant differences between AP exosome miRNAs in different storage days (P<0.01). The number of miRNA up-regulated and down-regulated was 374 and 255 as compared with the number of platelet exosomes miRNA stored in D3 and D0, while that was 297 and 242 in D5 and D0, and 252 and 327 in D5 and D3, respectively. The target genes of differential platelet exosome miRNAs were analyzed by GO enrichment. Target genes of differential miRNA were mainly involved in membrane composition, mainly played molecular functions binding to proteins, and participated in biological processes of transcriptional regulation.@*CONCLUSION@#The exosome differential proteins and miRNAs in D5 are significantly different from those in the D0 of APs, and they are involved in various biological processes.


Subject(s)
Blood Component Removal , Blood Platelets/metabolism , Exosomes/metabolism , Humans , MicroRNAs/genetics , Proteomics
16.
Article in Chinese | WPRIM | ID: wpr-928731

ABSTRACT

OBJECTIVE@#To investigate the expression and correlation of miR-211, miR-155, and C-myc in acute T lymphocytic leukemia (T-ALL), aiming to provide evidence for the diagnosis and treatment.@*METHODS@#A total of 96 T-ALL patients who were diagnosed and treated in People's Hospital of Zhengzhou from June 2014 to June 2017 were selected, and 69 healthy volunteers who had a physical examination were selected as control group in the same period. Real-time fluorescent quantitative PCR (RT-PCR) was used to determine the expression levels of miR-211, miR-155, and C-myc in peripheral blood mononuclear cells in each group. Kaplan-Meier was used to analyze the survival of T-ALL patients and correlation of miR-211, miR-155, and C-myc with prognosis. Pearson correlation analysis was used to evaluate the correlation of miR-211, miR-155, and C-myc with disease risk.@*RESULTS@#The expression levels of miR-211 mRNA, miR-155 mRNA, and C-myc mRNA in T-ALL group were higher than those in the control group (P<0.01), those in non-remission group were higher than those in remission group (P<0.01), and those in high-risk group were also higher than those in low-risk group and intermediate-risk group (P<0.01). The survival time of T-ALL patients with low miR-211 expression was longer than that with high miR-211 expression (P<0.01), that with low miR-155 expression was longer than that with high miR-155 expression (P<0.01), and that with low C-myc expression was also longer than that with high C-myc expression (P<0.01). The high expression of miR-211, miR-155, and C-myc was linearly positively correlated with high risk of disease (r=0.749, 0.781, 0.804).@*CONCLUSION@#The expressions of miR-211, miR-155, and C-myc are up-regulated in T-ALL patients, closely related to prognosis, and linearly positively correlated with disease risk.


Subject(s)
Humans , Leukocytes, Mononuclear , MicroRNAs/genetics , Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/genetics , Prognosis , Proto-Oncogene Proteins c-myc/genetics , RNA, Messenger
17.
Article in Chinese | WPRIM | ID: wpr-928730

ABSTRACT

OBJECTIVE@#To investigate the mechanism of miR-155 promoting drug resistance of children B-ALL to Ara-C by regulating Wnt/β-Catenin signaling pathway.@*METHODS@#The expression of miR-155 in bone marrow tissue and cell line of B-ALL was detected by PCR. The chemotherapy resistant strain REH/ Ara-C was constructed by using REH cells. REH/ Ara-C cells were transfected with miR-155 inhibitor. The proliferation of REH/Ara-C cells was detected by EdU. The apoptosis of REH/ Ara-C cells was detected by flow cytometry. The drug resistance of REH/Ara-C cells were analyzed by CCK-8 method and colony formation assay. The expression of Wnt/β-Catenin signaling pathway related proteins were determined by Western blot. MiR-155 inhibitor and Wnt activator agonist were used to transfect REH/Ara-C cells, and their effects on cell proliferation, apoptosis and drug resistance were determined.@*RESULTS@#Compared with normal tissues and cells, the expression level of miR-155 in B-ALL bone marrow tissue/cell line was increased (P<0.05); Compared with drug sensitive B-ALL tissues/cell lines, the expression level of miR-155 in drug resistant B-ALL tissues and cell lines was increased (P<0.05); Inhibition of miR-155 expression decreased the proliferation of REH/Ara-C cells (P<0.05), promoted apoptosis (P<0.05), enhanced the cytotoxicity of Ara-C (P<0.05), and inhibited Wnt/β-Catenin signaling pathway related protein and MDR1 gene expression (P<0.05), which could be reversed by activating Wnt expression (P<0.05).@*CONCLUSION@#The expression of miR-155 is up-regulated in bone marrow of children with B-ALL, which may be related to the activation of Wnt/β-Catenin signaling pathway promotes the proliferation of B-ALL cells and inhibits apoptosis, which leads to chemotherapy resistance.


Subject(s)
Apoptosis , Cell Line, Tumor , Cell Proliferation , Child , Cytarabine , Drug Resistance, Neoplasm , Gene Expression Regulation, Neoplastic , Humans , MicroRNAs/genetics , Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics , Wnt Signaling Pathway , beta Catenin/genetics
18.
Article in Chinese | WPRIM | ID: wpr-928726

ABSTRACT

OBJECTIVE@#To explore the effect of carvacrol on the biological behavior of leukemia cells and its regulation to circ-0008717/miR-217 molecular axis.@*METHODS@#Human acute lymphoblastic leukemia cells Molt-4 were cultured in vitro, and different concentrations of carvacrol were added to the cells. si-NC and si-circ-0008717 were transfected into Molt-4 cells (si-NC group, si-circ-0008717 group). pcDNA, pcDNA-circ-0008717, anti-miR-NC, anti-miR-217 were transfected into Molt-4 cells and then added to carvacrol-treated cells (carvacrol+pcDNA group, carvacrol+pcDNA-circ-0008717 group, carvacrol+anti-miR-NC group, carvacrol+anti-miR-217 group). MTT, plate clone formation experiment, and flow cytometry were used to detect the viability of the cell, colony formation number, and apoptosis rate of cells, respectively. The RT-qPCR method was used to detect the expression levels of circ-0008717 and miR-217. The dual luciferase reporter gene experiment was used to detect the targeting relationship between circ-0008717 and miR-217.@*RESULTS@#After carvacrol treatment, the cell viability decreased significantly (r=-0.9405), expression level of circ-0008717 decreased (r=-0.9117), colonies formed number decreased (r=-0.9256), while the cell apoptosis rate increased (r= 0.8464), and the expression level of miR-217 increased (r=0.9468). Compared with the si-NC group, the expression level of miR-217 in si-circ-0008717 group increased (P<0.001), the cell apoptosis rate increased (P<0.001), while cell viability decreased (P<0001), the number of colonies formed decreased (P<0.001). Compared with the carvacrol+pcDNA group, the cell viability of the carvacrol+pcDNA-circ-0008717 group increased (P<0.001), the number of colonies formed increased (P<0.001), while the cell apoptosis rate decreased (P<0.001). circ-0008717 could target miR-217. The cell viability of the carvacrol+anti-miR-217 group increased (P<0.001), and the number of colonies formed increased (P<0.001), while the cell apoptosis rate decreased (P<0001) as compared with the carvacrol+anti-miR-NC group.@*CONCLUSION@#Carvacrol can promote the expression of miR-217 by down-regulating the expression of circ-0008717, thereby reducing the proliferation and cloning ability of leukemia cells and promoting cell apoptosis.


Subject(s)
Antagomirs , Apoptosis , Cell Line, Tumor , Cell Proliferation , Cymenes , Humans , Leukemia , MicroRNAs/genetics
19.
Article in Chinese | WPRIM | ID: wpr-928716

ABSTRACT

OBJECTIVE@#Two sgRNAs transfected FLT3-ITD+AML cell line MV411 with different binding sites were introduced into CRISPR/cas9 to obtain MV411 cells with miR-155 gene knockout. To compare the efficiency of miR-155 gene knockout by single and double sgRNA transfection and their effects on cell phenotypes.@*METHODS@#The lentiviral vectors were generated containing either single sgRNA or dual sgRNAs and packaged into lentivirus particles. PCR was conducted to measure gene editing efficiency, and miR-155 expression was evaluated by qPCR. CCK-8 assay was used to evaluate the cell proliferation, and calculate drug sensitivity of cells to adriamycin and quizartinib. Annexin V-APC/7-AAD staining was used to label cell apoptosis induced by adriamycin and quizartinib.@*RESULTS@#In the dual sgRNAs transfected cells, a cleavage band could be observed, meaning the success of gene editing. Compared with the single sgRNA transfected MV411 cells, the expression level of mature miR-155-5p was lower in the dual sgRNA transfected cells. And, dual sgRNA transfected MV411 were more sensitive to adriamycin and quizartinib with lower IC50 and higher apoptosis rate.@*CONCLUSION@#The inhibition rate of miR-155 gene expression transfected by dual sgRNA is higher than that by single sgRNA. Dual sgRNA transfection can inhibit cell proliferation, reverse drug resistance, and induce apoptosis more significantly. Compared with single sgRNA transfection, dual sgRNA transfection is a highly efficient gene editing scheme.


Subject(s)
CRISPR-Cas Systems , Doxorubicin/pharmacology , Drug Resistance , Gene Editing , Humans , Leukemia, Myeloid, Acute/genetics , MicroRNAs/genetics , RNA, Guide/genetics , fms-Like Tyrosine Kinase 3/genetics
20.
Article in Chinese | WPRIM | ID: wpr-928703

ABSTRACT

OBJECTIVE@#To study the expression profiles changes of miRNA in apheresis platelets after 1, 3 and 5 days of storage.@*METHODS@#The apheresis platelets were collected from 20 volunteer blood donors. After mixing fully, the platelets were stored in a shaker with (22±2) ℃ horizontal oscillation. The samples were taken on the 1st, 3rd and 5th day, and used to sequence for miRNAs by DNA nanoball (DNB) sequencing technology, which were named as C_1, C_3 and C_5, respectively. The expression level of platelets miRNA was standardized by transcripts per kilobase million (TPM) algorithm. MiRNAs with P-value < 0.001 and the expression difference of more than two times were considered as significant difference between two groups. The expression of miRNAs was verified by real-time fluorescence quantitative PCR (RT-qPCR).@*RESULTS@#By DNB sequencing, there were 688, 730, and 679 platelet miRNAs expressed in C_1, C_3 and C_5 group, respectively. Cluster analysis showed that the expression profile of miRNAs changed significantly. The expression level of the first 20 high abundance miRNAs was about 4/5 of the total amounts of expressed miRNAs in each group, which the top five miRNAs were miR-21-5p, miR-26a-5p, miR-199a-3p, miR-126-3p, and let-7f-5p. The correlation of high abundance platelet miRNAs among the three groups was high (R2=0.876, R2=0.979, R2=0.937, respectively) and the differences were not statistically significant (P>0.05). Compared with the differential expression of platelet miRNAs with more than 1 000 TPM in the C_3 and C_1 group, there were 6 differentially expressed miRNAs, including 3 up-regulated (miR-146a-5p, miR-379-5p, and miR-486-5p) and 3 down-regulated (miR-652-3p, miR-142-5p, and miR-7-5p). While in the C_5 and C_1 group, there were 4 differentially expressed miRNAs, including 2 up-regulated (miR-146a-5p and let-7b-5p) and 2 down-regulated (miR-30d-5p and miR-142-5p). Compared with the differentially expression of platelet miRNAs between 1-1 000 TPM in the C_3 and C_1 group, there were 133 differentially expressed miRNAs, in which 99 were up-regulated and 34 were down-regulated. While in the C_5 and C_1 group, there were 77 differentially expressed miRNAs, in which 31 were up-regulated and 46 were down-regulated. The six selected differentially expressed miRNAs verified by RT-qPCR were consistent with those of sequencing.@*CONCLUSION@#The expression profiles of platelets miRNAs change significantly among 1, 3, and 5 d of storage in vitro.


Subject(s)
Blood Component Removal , Blood Platelets , Cluster Analysis , Gene Expression Profiling , Humans , MicroRNAs/genetics
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