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1.
International Journal of Cerebrovascular Diseases ; (12): 303-307, 2023.
Article in Chinese | WPRIM | ID: wpr-989229

ABSTRACT

Biological clock proteins are involved in the regulation of many important physiological processes, including blood pressure. The deletion or mutation of core circadian clock genes may cause elevated blood pressure levels and disrupted blood pressure rhythms, exacerbating vascular function damage, and ultimately leading to the occurrence, development and poor outcome of ischemic stroke. This article reviews the molecular mechanism of biological clock rhythm, the relationship between biological clock gene and blood pressure regulation mechanism, the mechanism of circadian rhythm disorder in the occurrence and development of hypertension, and the relationship between blood pressure rhythm disorder and stroke.

2.
Journal of Sun Yat-sen University(Medical Sciences) ; (6): 816-822, 2023.
Article in Chinese | WPRIM | ID: wpr-988728

ABSTRACT

ObjectiveTo analyze the expression of Lactate dehydrogenase A(LDHA) in both renal cell carcinoma (RCC) tissue and RCC cell lines, and to investigate the impact of LDHA expression on the progression of RCC. MethodsFrom June 2018 to June 2022, totally 52 cases of RCC tissue samples and 49 cases of para-cancerous tissue samples were collected through surgical procedures from our hospital. LDHA expression was detected using immunohistochemistry (IHC). The expression levels of LDHA in vitro were also detected in the normal human proximal tubule epithelial cell line HK-2 and renal cell carcinoma cell lines A498, Caki-2, ACHN, and 786-O by using qRT-PCR and Western blot. A recombinant plasmid carrying LDHA-shRNA was constructed and then transfected into 786-O cells to down-regulate the expression of LDHA. Tumor proliferative capacity was monitored using CCK-8 assay, clonal formation assay and EdU assessments. Additionally, cell glycolytic activity was assessed through glucose uptake assay, lactate secretion assay, and ECAR analysis. ResultsIHC analysis revealed significantly higher expression of LDHA in RCC tissue compared to adjacent tissues(P<0.05). Furthermore, RCC tissues with higher TNM stage exhibited greater expression of LDHA than those with lower TNM stage (P<0.05). The results of qRT-PCR and Western blot demonstrated that the expression of LDHA in each RCC cell line was significantly higher than that in HK-2(P<0.05). After blocking the expression of LDHA in 786-O, there was a significant down-regulation of cell proliferation and glycolysis capacity (P<0.05). ConclusionsThe expression of LDHA in RCC tissue and RCC cell lines is significantly overexpressed compared with normal one, particularly in those with higher TNM stage. Knockdown of the expression of LDHA significantly suppresses cell proliferation and aerobic glycolysis capacity in 786-O.

3.
Chinese Journal of Biochemistry and Molecular Biology ; (12): 1266-1274, 2023.
Article in Chinese | WPRIM | ID: wpr-1015643

ABSTRACT

Glucose transporters (GLUTs) encoded by the solute carrier family 2 (SLC2) gene belong to the major facilitator superfamily (MFS) and are responsible for the transmembrane transport of glucose in the body. As the earliest discovered member of the GLUTs, glucose transporter 1 (GLUT1) is mainly found in the blood-brain barrier and erythrocyte membrane, and plays an important role in maintaining stable blood glucose concentration and energy supply to the brain. The transmembrane transport capacity of GLUT1 is not only related to the gene expression of SLC2 A1 on the cellular membrane, but also to the transport kinetic regulation of GLUT1. Generally, SLC2 A1 expression is regulated at the transcriptional, post-transcriptional, translational and post-translational levels, and the transport kinetics regulation includes a series of GLUT1 inhibitors, such as intramembrane glycan-binding site inhibitor, extramembrane glycan-binding site inhibitor, adenosine-binding effect inhibitors and the highly selective inhibitor BAY-876. SLC2 A1 gene deletions and mutations can cause embryonic mortality and GLUT1 deficiency syndrome. In contrast, abnormally high SLC2 A1 expression is associated with various diabetic complications (e. g. diabetic retinopathy and diabetic nephropathy), neurocognitive impairment and tumorigenesis. In this paper, the structure, function, expression and activity regulation of GLUT1 and its relationship with diseases were reviewed to provide a reference for the GLUT1-related clinical research and drug development.

4.
Chinese Journal of Geriatrics ; (12): 528-533, 2022.
Article in Chinese | WPRIM | ID: wpr-933116

ABSTRACT

Objective:To provide clues for exploring the molecule mechanisms underlying ruptured intracranial aneurysms(IAs)by constructing a competitive endogenous RNA(ceRNA)network.Methods:Gene expression data sets of 21 ruptured IAs(RIAs)and 21 unruptured IAs samples were downloaded from the Gene Expression Omnibus(GEO)database.First, mRNAs and long non-coding RNAs(lncRNAs)related to ruptured IAs were identified by integrated analysis of weighted gene co-expression network analysis(WGCNA)and differential gene expression analysis with DESeq2, respectively.Then, mRNA-miRNA associations were obtained based on miRWalk 2.0; miRNA-lncRNA associations were predicted based on miRcode and data from the literature.Lastly, a ceRNA network including mRNAs, miRNAs, and lncRNAs was constructed via combining lncRNA-miRNA associations and lncRNA-miRNA associations.Results:A total of 470 mRNAs and 78 lncRNAs related to ruptured IAs were obtained through WGCNA and differential gene expression analysis.Based on the databases, 49 miRNAs were predicted to be able to bind to the above mRNAs and lncRNAs, and in combination with data from the literature, 13 miRNAs, 7 lncRNAs and 73 mRNAs were screened to construct a ceRNA network.Conclusions:A new ruptured IA-related ceRNA network including 13 miRNAs, 7 lncRNAs and 73 mRNAs has been constructed and may provide some clues for exploring the mechanisms underlying ruptured IAs.

5.
International Journal of Surgery ; (12): 57-62,F4, 2022.
Article in Chinese | WPRIM | ID: wpr-929969

ABSTRACT

Glioma has a high malignant degree, high recurrence rate and poor prognosis. We analyzed signal pathway of the Hippo/YAP, PI3K/AKT/mTOR, miRNA, WNT/β-catenin, Notch, Hedgehog, TGF-β and the mechanism of key enzymes in glioma. It is concluded that YAP1 inhibitor may become an effective target for the treatment of glioma in the future.Inhibiting PI3K/AKT/mTOR, Shh, Wnt/β-Catenin and HIF-1α can reduce the migration ability and drug resistance of tumor cells to improve the prognosis of glioma. The analysis shows that Notch1 and Sox2 have a positive feedback regulation mechanism, and Notch4 predicts the malignant degree of glioma. In this way, notch can not only be treated for glioma stem cells in clinic, but also be used as an evaluation index to evaluate the prognosis, and provide an exploratory attempt for the direction of glioma treatment. MiRNA plays an important role in diagnosis, and in the treatment of glioma, it can play a further role with the delivery of nanoparticles and TMZ. It is believed that these studies will help us to have a deeper understanding of glioma, so that we will find new and better treatment schemes to gradually conquer the problem of glioma.

6.
Journal of Preventive Medicine ; (12): 151-155, 2022.
Article in Chinese | WPRIM | ID: wpr-920569

ABSTRACT

Abstract@#Benzo [a] pyrene ( B [a] P ) is a well-recognized environmental pollutant. Exposure to B[a]P elicits many adverse biological effects, including tumorigenesis, immunosuppression, teratogenicity, and hormonal effects. In addition to B [a] P exposure-induced genetic damages, a growing number of studies demonstrate that epigenetic changes play an important role in chemically induced carcinogenesis. In order to provide better understanding of epigenetic changes of B [a] P and their potential association with genotoxic endpoints, this review summarizes the advances in the applications of functional genomics in the research of B [a] P toxicity, including functional genomics techniques, regulation of human genome expression, DNA sequence variability, model organisms research, and bioinformatics studies, so as to provide insights into the management of B [a] P exposure-induced health injuries and use of genomics techniques to unravel the mechanisms underlying the toxicity of other environmental pollutants.

7.
Chinese Journal of Biochemistry and Molecular Biology ; (12): 175-181, 2022.
Article in Chinese | WPRIM | ID: wpr-1015751

ABSTRACT

MicroRNA (miRNA) is a class of endogenous non-coding single-stranded RNA molecules with a length of about 16 ~ 29 nucleotides. Widely found in eukaryotes, they play important regulatory roles in plant cell proliferation and differentiation, organ formation, metabolism, resistance to salt, temperature, drought, heavy metal stress, etc. Plant miRNA mainly affects plant growth and development by degrading target genes or inhibiting the expression of target genes at the translation level. At present, the research on the production and regulation of miRNA is relatively clear, and the specific roles and regulatory networks of miRNA in plant secondary metabolism and response to abiotic stress have also been identified, which lays the foundation for a full understanding of the molecular regulation of miRNA. In order to better understand the expression and regulation characteristics of miRNA and to interpret the regulatory network of miRNA in plant secondary metabolism and abiotic stress response, we review the molecular mechanisms of plant miRNAs in regulating the biosynthesis of various secondary metabolites(flavonoids, terpenoids, alkaloids) and responding to environmental stress (salt, high temperature, low temperature, drought, heavy metal stress),and summarize the regulatory roles of miRNA in secondary metabolism and abiotic stress, which will provide references for understanding the relationship between environmental stress and plant metabolism, for further studying the regulatory mechanism of miRNA in maintaining plant homeostasis, and for cultivating superior crop varieties.

8.
Journal of Peking University(Health Sciences) ; (6): 602-607, 2021.
Article in Chinese | WPRIM | ID: wpr-942225

ABSTRACT

OBJECTIVE@#To screen potential pan-cancer biomarkers based on The Cancer Genome Atlas (TCGA) database, and to provide help for the diagnosis and prognosis assessment of a variety of cancers.@*METHODS@#"GDC Data Transfer Tool" and "GDCRNATools" packages were used to obtain TCGA database. After data sorting, a total of 13 cancers were selected for further analysis. False disco-very rate (FDR) < 0.05 and fold change (FC) >1.5 were used as the differential expression criteria to screen genes and miRNAs that were up- or down-regulated in all the 13 cancers. In the receiver operating characteristic curve (ROC curve), the area under the curve (AUC), the best cut-off value and the corresponding sensitivity and specificity were used to reflect diagnostic significance. The Kaplan-Meier method was used to calculate the survival probability and then the log-rank test was performed. Hazard ratio (HR) was calculated to reflect prognostic evaluation significance. DAVID tool were used to perform GO (Gene Ontology) and KEGG (Kyoto Encyclopedia of Genes and Genomes) enrichment analysis for differentially expressed genes. STRING and TargetScan tools were used to analyze the regulatory network of differentially expressed genes and miRNAs.@*RESULTS@#A total of 48 genes and 2 miRNAs were differentially expressed in all the 13 cancers. Among them, 25 genes were up-regulated, 23 genes and 2 miRNAs were down-regulated. Most differentially expressed genes and miRNAs had good ability to distinguish between the cases and controls, with AUC, sensitivity and specificity up to 0.8-0.9. Survival analysis results show that differentially expressed genes and miRNAs were significantly associated with patient survival in a variety of cancers. Most up-regulated genes were risk factors for patient survival (HR>1), while most down-regulated genes were protective factors for patient survival (0 < HR < 1). The enrichment analysis of GO and KEGG showed that the differentially expressed genes were mostly enriched in biological events related to cell proliferation. In the regulatory network analysis, a total of 13 differentially expressed genes and 2 differentially expressed miRNAs had regulatory and interaction relationships.@*CONCLUSION@#The 48 genes and 2 miRNAs that were differentially expressed in 13 cancers may serve as potential pan-cancer biomarkers, providing help for the diagnosis and prognosis evaluation of a variety of cancers, and providing clues for the development of broad-spectrum tumor therapeutic targets.


Subject(s)
Humans , Biomarkers, Tumor/genetics , Early Detection of Cancer , Gene Expression Profiling , Gene Expression Regulation, Neoplastic , MicroRNAs/genetics , Neoplasms/genetics , Prognosis
9.
Journal of International Oncology ; (12): 544-548, 2021.
Article in Chinese | WPRIM | ID: wpr-907576

ABSTRACT

Competing endogenous RNAs (CeRNAs) are crisscrossing regulatory networks. CeRNAs networks can mediate malignant tumor cell phenotypes, including proliferation and inhibition, autophagy, infinite growth, induction of angiogenesis and angiogenic mimicosis, immune escape, etc.. It is expected to provide new diagnostic markers and therapeutic targets for malignant tumors to master the regulation and function of CeRNAs mediated phenotype in malignant tumors.

10.
International Journal of Cerebrovascular Diseases ; (12): 630-635, 2021.
Article in Chinese | WPRIM | ID: wpr-907375

ABSTRACT

Rhythm of blood pressure refers to the circadian variation of blood pressure, which is regulated by clock genes. However, the rhythm disorder of blood pressure increases the risk of stroke. Taking the process of blood pressure regulation as a clue and focusing on the clock gene pathway, this article explores the possible mechanism of period gene regulating renin-angiotensin-aldosterone system in rhythm of blood pressure, so as to provide reference for the in-depth study of the relevant mechanism of rhythm disorder of blood pressure and search for a new target for the primary prevention of cerebrovascular diseases.

11.
Journal of Clinical Hepatology ; (12): 973-976, 2021.
Article in Chinese | WPRIM | ID: wpr-875916

ABSTRACT

The development of liver inflammatory diseases is associated with autoimmunity and inflammatory response. As a negative feedback regulator of cell signal, suppressor of cytokine signaling 1 (SOCS1) plays a key role in the development and progression of inflammatory diseases. This article mainly introduces the mechanism of action of SOCS1 in autoimmunity and inflammatory response and briefly describes its role in the development and progression of liver inflammatory diseases such as viral hepatitis and nonalcoholic steatohepatitis. The analysis shows that the abnormal expression of SOCS1 in inflammatory response is associated with the regulation of cytokine receptor, Toll-like receptor, and hormone receptor signal, which leads to the development of inflammatory diseases. Therefore, SOCS1 has potential prospects as an auxiliary means for the diagnosis and treatment of liver inflammatory diseases.

12.
Journal of Clinical Hepatology ; (12): 725-728, 2021.
Article in Chinese | WPRIM | ID: wpr-873826

ABSTRACT

MicroRNA (miRNA) is a type of small non-coding RNA and acts as a post-transcriptional regulator of gene expression. This article briefly describes the etiology of various chronic liver diseases, including metabolic dysfunction-associated fatty liver disease, chronic hepatitis B, chronic hepatitis C, chronic drug-induced liver injury, liver cirrhosis, and hepatocellular carcinoma, and summarizes related reports on microRNA-125b which enters different signal transduction pathways and plays the same or contradictory regulatory role in the same liver disease or pathological process by targeting different target genes, so as to provide insights into the research on the pathogenesis of various chronic liver diseases and the establishment of non-invasive differential methods.

13.
Chinese Journal of Biotechnology ; (12): 1603-1618, 2021.
Article in Chinese | WPRIM | ID: wpr-878657

ABSTRACT

Corynebacterium glutamicum is an important workhorse of industrial biotechnology, especially for amino acid bioindustry. This bacterium is being used to produce various amino acids at a level of over 6 million tons per year. In recent years, enabling technologies for C. glutamicum metabolic engineering have been developed and improved, which accelerated construction and optimization of microbial cell factoriers, expanding spectra of substrates and products, and facilitated basic researches on C. glutamicum. With these technologies, C. glutamicum has become one of the ideal microbial chasses. This review summarizes recent key technological developments of enabling technologies for C. glutamicum metabolic engineering and focuses on establishment and applications of CRISPR-based genome editing, gene expression regulation, adaptive laboratory evolution, and biosensor technologies.


Subject(s)
Amino Acids , Biotechnology , Corynebacterium glutamicum/genetics , Gene Editing , Metabolic Engineering
14.
Chinese Journal of Biotechnology ; (12): 1237-1248, 2021.
Article in Chinese | WPRIM | ID: wpr-878627

ABSTRACT

RNA interference (RNAi) is one of the important mechanisms to regulate gene expression in eukaryotes. One of the original functions of RNAi is to facilitate the antiviral strategy of host. Early studies reveal that invertebrates can use RNAi to resist viruses. However, if this mechanism exists in mammals is still controversial. The latest studies confirm that mammals do have the RNAi-based immunity, and researchers believe that RNAi-based antiviral immunity is a brand-new immunological mechanism that was neglected in the past. It is worthy to note that virus can also use RNAi to enhance its infectivity and immune escape in host cells. This review introduces the research history of RNAi-based antiviral immunity in animals and summarizes the main findings in this field. Last but not least, we indicate a series of unresolved questions about RNAi-based antiviral immunity, and explore the relationship between RNAi-based antiviral immunity and other innate immunological pathways. The virus-mediated RNAi pathway in animal is not only an interesting basic biology question, but also has important guiding roles in the development of antiviral drugs.


Subject(s)
Animals , Antiviral Agents , Immunity, Innate/genetics , Mammals , RNA Interference , RNA, Small Interfering/genetics , RNA, Viral
15.
Rev. Assoc. Med. Bras. (1992) ; 66(6): 784-788, June 2020. tab, graf
Article in English | SES-SP, LILACS | ID: biblio-1136281

ABSTRACT

SUMMARY OBJECTIVE Long noncoding RNA (lncRNAs) are frequently abnormally expressed in tumors and involved in the occurrence and progression of human cancer. Recently, a disease-related lncRNA, TMPO antisense RNA 1 (TMPO-AS1), was identified to be dysregulated in several tumors. Hence, we aimed to demonstrate whether TMPO-AS1 could be a promising prognostic marker for patients with laryngeal squamous cell carcinoma (LSCC). METHODS RT-PCR was performed to test TMPO-AS1 expressions in 187 LSCC specimens compared with matched normal specimens. Chi-squared tests were used to determine the associations between TMPO-AS1 expressions and the clinicopathological characteristics of LSCC patients. Then, the clinical outcome of LSCC patients who had lower or higher TMPO-AS1 expression was analyzed using Kaplan-Meier assays. Finally, a Cox proportional hazards model was carried out to evaluate the prognostic values of TMPO-AS1 and other clinical features. RESULTS We found that TMPO-AS1 was distinctly upregulated in human LSCC tissues compared with corresponding normal specimens (p < 0.01). Higher expressions of TMPO-AS1 were observed to be positively associated with the clinical stage (p = 0.020) and lymph node metastasis (p = 0.027). A clinical study in 187 patients revealed that patients with TMPO-AS1 low expressions had poorer survival than those with TMPO-AS1 high expressions (p = 0.0012). In addition, the result of multivariate assays demonstrated TMPO-AS1 expression is an independent predictor for the overall survival of LSCC patients. CONCLUSIONS TMPO-AS1 might be considered a novel molecule involved in LSCC progression, which provides a possible prognostic biomarker.


RESUMO OBJETIVO RNAs longos não-codificantes (INcRNAs) são frequentemente expressos anormalmente em tumores e estão envolvidos na ocorrência e progressão do câncer humano. Recentemente, um INcRNA relacionado com a doença, o TMPO antisense RNA 1 (TMPO-AS1), foi identificado como desregulado em vários tumores. Por isso, procuramos demonstrar se o TMPO-AS1 poderia ser um marcador de prognóstico promissor para pacientes com carcinoma de células escamosas da laringe (LSCC). MÉTODOS RT-PCR foi realizado para medir as expressões do TMPO-AS1 em 187 espécimes de LSCC em comparação com espécimes normais correspondentes. Foram utilizados testes Qui-quadrado para determinar as associações entre as expressões do TMPO-AS1 e as características clínicas dos pacientes com LSCC. Em seguida, o desfecho clínico dos pacientes com LSCC que tinham uma expressão do TMPO-AS1 inferior ou superior foi analisado com ensaios Kaplan-Meier. Por último, o modelo de riscos proporcionais de Cox foi utilizado para avaliar o valor prognóstico do TMPO-AS1 e outras características clínicas. RESULTADOS Observamos que o TMPO-AS1 estava claramente super-regulado nos tecidos de LSCC humanos em comparação com os espécimes normais correspondentes (p<0,01). Expressões mais elevadas de TMPO-AS1 estavam positivamente associadas ao estágio clínico (p=0,020) e à metástase linfática (p=0,027). Um estudo clínico com 187 pacientes revelou que aqueles com expressões mais baixas de TMPO-AS1 tiveram uma sobrevida pior do que aqueles com expressões elevadas de TMPO-AS1 (p=0,0012). Além disso, o resultado de ensaios multivariados demonstrou que a expressão do TMPO-AS1 é um preditor independente para a sobrevida global de pacientes com LSCC. CONCLUSÕES TMPO-AS1 pode ser considerado uma molécula nova envolvida na progressão do LSCC, o que proporciona um possível biomarcador de prognóstico.


Subject(s)
Humans , Thymopoietins/metabolism , Carcinoma, Squamous Cell/diagnosis , Laryngeal Neoplasms/diagnosis , Prognosis , Cyclic N-Oxides , RNA, Long Noncoding
16.
Chinese Journal of General Surgery ; (12): 57-60, 2020.
Article in Chinese | WPRIM | ID: wpr-870416

ABSTRACT

Objective To verify that lncRNA-C21orF96 regulates the expression of miRNA-875-5p and USF2 genes and promotes the invasion and metastasis of gastric cancer.Methods RT-PCR was used to measure the expression of lncRNA-C21orF96 related miRNA in gastric cancer cells.pcDNA3.1 plasmid was used to over-express lncRNA-C21orF96 in KATO-Ⅲ and siRNA was used to knockdown the expression of lncRNA-C21orF96 in SGC-7901,and RT-PCR was used to measure the expression of miRNA-875-5p and USF2 genes;By overexpressing lncRNA-C21orF96 in MKN45,transwell was used to observe changes of cells invasion and migration.Results LncRNA-C21orF96 showed a significant inverse relationship with miR-875-5p,(SGC-7901:21.19 ±1.09 vs.3.28 ±0.06,P<0.01;SNU-16:24.76 ±2.09 vs.8.16 ±0.07,P < 0.01).In KATO-Ⅲ over-expressing lncRNA-C21 orF96,miR-875-5p expression decreased significantly while USF2 expression increased (P <0.01);In SGC-7901 with lncRNA-C21orF96 knockdown,miR-875-5p expression increased significantly while USF2 expression decreased (P < 0.05).The number of cells passing through the artificial basement membrane in the experimental group was significantly different from that in the control group (migration:216.19 ± 2.30 vs.89.19 ± 4.60,P<0.001;invasion:146.18 ±5.3 vs.59.18 ± 2.60,P < 0.001).Conclusions The overexpression of lncRNA-C21orF96 significantly reduces the expression of miR-875-5p and promotes the expression of USF2,hence promoting the invasion and metastasis of gastric cancer.

17.
Tumor ; (12): 20-30, 2020.
Article in Chinese | WPRIM | ID: wpr-848218

ABSTRACT

Objective: To investigate the effect of pleiotrophin (PTN) on the chemotherapy resistance of osteosarcoma cells, and its possible molecular mechanism. Methods: The expression levels of PTN and microRNA (miR)-137-3p in osteosarcoma drug-resistant MG63/ADR cells and parental MG63 cells were detected by real-time fluorescent quantitative PCR. SiRNA-PTN or miR-137-3p mimic was transfected into MG63/ADR cells, while the PTN recombinant plasmid or miR-137-3p inhibitor was transfected into MG63 cells. After the transfection efficiency was verified by real-time fluorescent quantitative PCR, the cell proliferation activity was detected by CCK-8 and clony formation assay. The interaction between miR-1373p and the target gene PTN was verified by dual luciferase reporter gene system. The miR-137-3p mimic, siRNA-PTN or miR-137-3p mimic+PTN recombinant plasmid was respectively transfected into osteosarcoma MG63/ADR cells, then the expressions of PTN mRNA and protein were detected by real-time fluorescent quantitative PCR and Western blotting, and the cell viability was detected by CCK-8 method. Results: PTN was significantly highly expressed in drug-resistant MG63/ ADR cells (P < 0.01), while miR-137-3p was significantly lowly expressed (P < 0.01). After transfection with siRNA-PTN or miR-137-3p mimic, the proliferation and clone formation abilities of MG63/ADR cells were significantly reduced (all P < 0.01). After transfection with PTN vector or miR-137-3p inhibitor, the proliferation and clone formation abilities of parental MG63 cells were significantly increased (all P < 0.01). PTN was a downstream target gene of miR-137-3p, and miR-137-3p negatively regulated the expression of PTN gene (P < 0.01). After transfection with siRNA-PTN or miR-137-3p mimic, the expression levels of PTN mRNA and protein in MG63/ADR cells were reduced (both P < 0.01), but the overexpression of PTN could reverse the effect of miR-137-3p on the viability of osteosarcoma drug-resistant cells (P < 0.01). Conclusion: PTN can regulate the chemotherapy resistance of osteosarcoma, and its mechanism may be related to miR-137-3p downregulating PTN expression.

18.
Tumor ; (12): 257-265, 2020.
Article in Chinese | WPRIM | ID: wpr-848194

ABSTRACT

Objective: To investigate the expression and biological functions of cold inducible RNA binding protein (CIRBP) in renal cancer. Methods: Bioinformatics analysis of microarray in Gene Expression Omnibus (GEO) and gene sequencing data in The Cancer Genome Atlas (TCGA) was used to analyze the expression of CIRBP mRNA in renal cancer, further the expression level of CIRBP gene in 20 cases of renal cancer tissues and 3 kinds of renal cancer cell lines was identified by real-time fluorescent quantitative PCR. The renal cancer 786-O and CAKI-1 cells were transfected with the CIRBP overexpression plasmids, then the cell proliferation viability was detected by MTT assay and cell clone formation assay. The migration ability of renal cancer cells was detected by Transwell chamer, and the expressions of cell migration-related protein N-cadherin, E-cadherin and protein kinase B (PKB, also known as AKT) pathway-related proteins were detected by Western blotting. Results: The expression level of CIRBP in renal cancer tissues was significantly lower than that in the adjacent normal tissues. The prognosis of patients with high expression of CIRBP mRNA was significantly better than that of the patients with low expression of CIRBP. The proliferation and clone formation of renal cancer 786-O and CAKI-1 cells transfected with CIRBP overexpresion plasmids were significantly inhibited (all P 0.01). The number of renal cancer 786-O and CAKI-1 cells migrated through the membrane in CIRBP overexpression group was less than that in the control group (all P 0.01). In the 786-O and CAKI-1 cells with CIRBP overexpression, the expression level of migration-related protein N-cadherin was significantly decreased, the expession level of E-cadherin was significantly increased, while the expressions of AKT pathwayrelated phospho-AKT (p-AKT) and phospho-glycogen synthasc kinase 3β (p-GSK3β) proteins were decreased significantly (all P 0.05). Conclusion: CIRBP is down-regulated in renal cancer, and inhibits the proliferation and migration of renal cancer cells. CIRBP can be used as a potential clinical diagnosis target and prognostic marker for renal cancer.

19.
Journal of Zhejiang University. Science. B ; (12): 460-473, 2020.
Article in English | WPRIM | ID: wpr-846958

ABSTRACT

Plant breeding is well recognized as one of the most important means to meet food security challenges caused by the ever-increasing world population. During the past three decades, plant breeding has been empowered by both new knowledge on trait development and regulation (e.g., functional genomics) and new technologies (e.g., biotechnologies and phenomics). Gene editing, particularly by clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) and its variants, has become a powerful technology in plant research and may become a game-changer in plant breeding. Traits are conferred by coding and non-coding genes. From this perspective, we propose different editing strategies for these two types of genes. The activity of an encoded enzyme and its quantity are regulated at transcriptional and post-transcriptional, as well as translational and post-translational, levels. Different strategies are proposed to intervene to generate gene functional variations and consequently phenotype changes. For non-coding genes, trait modification could be achieved by regulating transcription of their own or target genes via gene editing. Also included is a scheme of protoplast editing to make gene editing more applicable in plant breeding. In summary, this review provides breeders with a host of options to translate gene biology into practical breeding strategies, i.e., to use gene editing as a mechanism to commercialize gene biology in plant breeding.

20.
Journal of China Pharmaceutical University ; (6): 646-654, 2020.
Article in Chinese | WPRIM | ID: wpr-843042

ABSTRACT

@#Accumulating studies have recently shown that long noncoding RNAs (lncRNAs) are involved in the initiation and progression of myocardial fibrosis,a common histological characteristic of heart conditions and prominent global health issues. LncRNAs are prominently served as regulatory molecules via interaction with DNA,RNA and proteins in transcriptional and post-transcriptional processes. They can change morphological structure and biochemical metabolism of cardiac cells and regulate homeostasis of the cardiac extracellular matrix. Therefore,lncRNAs show great potential as diagnostic and prognostic biomarkers and therapeutic targets for anti-fibrotic treatment.

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