Relationship between serum miR-199a-5p and miR-378a-3p levels and recurrence of infants with proliferative facial hemangioma after propranolol withdrawal / 口腔疾病防治

Objective@# To investigate the relationship between serum miR-199a-5p and miR-378a-3p levels and the recurrence of infants with proliferative facial hemangioma relapsed after propranolol withdrawal in infants.@*Methods@#Ninety-three infants with proliferative facial hemangioma were selected, all of whom received propranolol treatment. The recurrence of the hemangioma after treatment was followed up, and the children were divided into a recurrence group (23 patients) and a nonrecurrence group (70 patients). Venous blood was collected before and after treatment, and the serum levels of miR-199a-5p and miR-378a-3p were detected by qRT-PCR, and the relationship between the serum levels of miR-199a-5p and miR-378a-3p and the recurrence of proliferative facial hemangioma relapsed after propranolol withdrawal in infants was analyzed.@*Results @# The serum expressions levels of miR-199a-5p and miR-378a-3p in non-relapsed group were increased after treatment compared with before treatment (P < 0.05), and there was no significant difference in the levels of miR-199a-5p and miR-378a-3p in the serum of the recurrence group after treatment compared with before treatment (P > 0.05). After treatment, the levels of miR-199a-5p and miR-378a-3p in the serum of the recurrence group were lower than those of the nonrecurrence group (P < 0.05). After treatment, the serum levels of miR-199a-5p and miR-378a-3p in patients with Ⅲ ~Ⅳ Norm grade hemangioma were higher than those in patients with Ⅰ~Ⅱ Norm grade hemangioma (P < 0.05). Logistic regression analysis showed that the low expression of miR-199a-5p, low expression of miR-378a-3p and tumor grade Ⅰ~Ⅱ after treatment were risk factors for the recurrence of proliferative facial hemangioma after propranolol withdrawal in infants (P < 0.05).@*Conclusion@# Low serum levels of miR-199a-5p and miR-378a-3p are associated with the recurrence of proliferative facial hemangioma after propranolol withdrawal in infants.

The effect and mechanism of miR-199a-5p on the radiosensitivity of cervical cancer CaSki cells / 中国医师杂志

Objective:To investigate the effect and potential mechanism of miR-199a-5p on the radiosensitivity of cervical cancer CaSki cells.Methods:Cervical cancer CaSki cells were cultured in vitro. MiR-199a-5p mimics (miR-199a-5p mimics) were transfected into cervical cancer CaSki cells (miR-199a-5p group) with liposome by Lipofectamine 2000. CaSki cells transfected with mimics control were used as negative control (NC group) and non transfected CaSki cells were used as blank control (control group). After X-ray irradiation, real-time fluorescence quantitative polymerase chain reaction (qRT-PCR) was used to detect the expression of miR-199a-5p in cells of each group. The effects of miR-199a-5p on radiosensitivity and apoptosis of CaSki cells were detected by clone formation assay and flow cytometry apoptosis assay. Bioinformatics software was used to predict the target gene of miR-199a-5p. Double luciferase reporter gene assay and Western blot were used to verify the targeting relationship between miR-199a-5p and thyroid hormone receptor interaction factor 4 (TRIP4). Results:The expression of miR-199a-5p in miR-199a-5p group was significantly higher than that in control group ( P<0.05). After X-ray irradiation, the expression of miR-199a-5p was more obvious ( P<0.05); Overexpression of miR-199a-5p could reduce the clonogenic ability and promote the apoptosis of CaSki cells ( P<0.05); Overexpression of miR-199a-5p could further reduce the clonal formation and promote the apoptosis of irradiated cells ( P<0.05); Double luciferase reporter gene experiment and Western blot confirmed that miR-199a-5p could target and negatively regulate TRIP4. Conclusions:miR-199a-5p can increase the radiosensitivity of cervical cancer CaSki cells by negatively regulating the expression of TRIP4.

Chikusetsu saponin Ⅳa ameliorates myocardial hypertrophy of rats through regulating expression of miR199a-5p/Atg5 / 中国中药杂志

The present study investigated the effects of chikusetsu saponin Ⅳa(CHS Ⅳa) on isoproterenol(ISO)-induced myocardial hypertrophy in rats and explored the underlying molecular mechanism. ISO was applied to establish a rat model of myocardial hypertrophy, and CHS Ⅳa(5 and 15 mg·kg~(-1)·d~(-1)) was used for intervention. The tail artery blood pressure was measured. Cardiac ultrasound examination was performed. The ratio of heart weight to body weight(HW/BW) was calculated. Morphological changes in the myocardial tissue were observed by HE staining. Collagen deposition in the myocardial tissue was observed by Masson staining. The mRNA expression of myocardial hypertrophy indicators(ANP and BNP), autophagy-related genes(Atg5, P62 and beclin1), and miR199 a-5 p was detected by qRT-PCR. Atg5 protein expression was detected by Western blot. The results showed that the model group exhibited increased tail artery blood pressure and HW/BW ratio, thickened left ventricular myocardium, enlarged myocardial cells, disordered myocardial fibers with widened interstitium, and a large amount of collagen aggregating around the extracellular matrix and blood vessels. ANP and BNP were largely expressed. Moreover, P62 expression was up-regulated, while beclin1 expression was down-regulated. After intervention by CHS Ⅳa at different doses, myocardial hypertrophy was ameliorated and autophagy activity in the myocardial tissue was enhanced. Meanwhile, miR199 a-5 p expression declined and Atg5 expression increased. As predicted by bioinformatics, Atg5 was a target gene of miR199 a-5 p. CHS Ⅳa was capable of preventing myocardial hypertrophy by regulating autophagy of myocardial cells through the miR-199 a-5 p/Atg5 signaling pathway.

Effect of total saponins from Panax japonicus on non-alcoholic steatohepatitis by regulating autophagy / 中国中药杂志

Non-alcoholic steatohepatitis(NASH) was induced by high-sugar and high-fat diet in mice to investigate the intervention effect of total saponins from Panax japonicus(TSPJ) and explore its possible mechanism. Mice were fed with high-sugar and high-fat diet to establish NASH model, and intervened with different doses of TSPJ(15, 45 mg·kg~(-1)). The animals were fed for 26 weeks. The histomorphology and pathological changes of liver tissues were observed by HE staining. The transcriptional expression levels of miR-199 a-5 p, autophagy related gene 5(ATG5) and inflammatory cytokines interleukin-6(IL-6), interleukin-1β(IL-1β) and tumor necrosis factor α(TNF-α) in mouse liver were measured by quantitative Real-time polymerase chain reaction(qRT-PCR). Western blot was used to detect the expression of autophagy-related proteins ATG5, P62/SQSTM1(P62), and microtubule-associated protein light chain 3(LC3)-I/Ⅱ proteins in mouse liver. The expression of P62 protein was detected by immunofluorescence staining. In order to verify the targeting regulation relationship between miR-199 a-5 p and ATG5, miR mimic/inhibitor NC and miR-199 a-5 p mimic/inhibitor were transfected into Hepa 1-6 cells, and the expression of ATG5 mRNA and protein was detected. pMIR-reportor ATG5-3'UTR luciferase reporter gene plasmid was constructed and co-transfected with miR mimic/inhibitor NC and miR-199 a-5 p mimic/inhibitor into Hepa 1-6 cells to detect luciferase activity. In vivo, HE staining in the model group showed typical fatty degeneration and inflammatory infiltration, with increased expression of miR-199 a-5 p and decreased expression of ATG5 mRNA and protein. The expression of autophagy-associated protein P62 increased significantly, the ratio of LC3Ⅱ/Ⅰ decreased, and the transcriptional expression of inflammatory factors increased significantly. After the intervention by TSPJ, the pathological performance of liver tissue was significantly improved, the expression of miR-199 a-5 p decreased and the expression of ATG5 mRNA and protein increased, the expression of autophagy-associated protein P62 decreased significantly, the ratio of LC3Ⅱ/Ⅰ increased, and the transcriptional expression of inflammatory cytokines IL-6, IL-1β and TNF-α decreased significantly. In vitro, it was found that the expression of ATG5 mRNA and protein and luciferase activity decreased significantly in miR-199 a-5 p overexpression cells, while after inhibition of miR-199 a-5 p expression, the expression level of ATG5 mRNA and protein and luciferase activity increased. The results showed that TSPJ can improve NASH in mice fed with high-sugar and high-fat diet, and its mechanism may be related to the regulation of miR-199 a-5 p/ATG5 signal pathway, the regulation of autophagy activity and the improvement of inflammatory response of NASH.

Chinese medicine Buyang Huanwu decoction promotes neurogenesis and angiogenesis in ischemic stroke rats by upregulating miR-199a-5p expression / 浙江大学学报·医学版

OBJECTIVE@#To investigate the mechanism of Chinese medicine Buyang Huanwu decoction (BYHWD) promoting neurogenesis and angiogenesis in ischemic stroke rats.@*METHODS@#Male SD rats were randomly divided into sham operation group, model group, BYHWD group, antagonist group and antagonist control group with 14 rats in each. Focal cerebral ischemia was induced by occlusion of the right middle cerebral artery for 90 min with intraluminal filament and reperfusion for 14 d in all groups except sham operation group. BYHWD (13 g/kg) was administrated by gastrogavage in BYHWD group, antagonist group and antagonist control group at 24 h after modeling respectively, and BrdU (50 mg/kg) was injected intraperitoneally in all groups once a day for 14 consecutive days. miR-199a-5p antagomir or NC (10 nmol) was injected into the lateral ventricle at d5 after ischemia in antagonist and antagonist control groups, respectively. The neurological deficits were evaluated by the modified neurological severity score (mNSS) and the corner test, and the infract volume was measured by toluidine blue staining. Neurogenesis and angiogenesis were detected by immunofluorescence double labeling method. The expression level of miR-199a-5p was tested by real-time RT-PCR, and the protein expressions of vascular endothelial growth factor (VEGF) and brain-derived neurotrophic factor (BDNF) were determined by Western blotting.@*RESULTS@#BYHWD treatment significantly promoted the recovery of neurological function (@*CONCLUSIONS@#Buyang Huanwu decoction promotes neurogenesis and angiogenesis in rats with cerebral ischemia, which may be related to increased protein expression of VEGF and BDNF through upregulating miR-199a-5p.

lncRNALUCAT1 facilitates the proliferation and metastasis of clear cell renal cell carcinoma 786-O cells via regulating miR-199a-5p/HIF-1α axis / 中国肿瘤生物治疗杂志

@# Objective: To investigate the effect of long non-coding RNA (lncRNA) lung cancer associated transcript 1 (LUCAT1) on proliferation and migration of clear cell renal cell carcinoma (ccRCC) 786-O cells and the underlying mechanism. Methods: A total of 40 pairs of pathologically confirmed tumor tissues and corresponding adjacent normal tissues from ccRCC patients, who underwent surgical resection in the Department of Urology, the First People's Hospital of Yichang during June 2013 and June 2017, were selected for this study. ccRCC cell lines (786-O, ACHN, UM-RC-2) and normal renal epithelial KiMA cells were also used in this study. qPCR was used to detect the mRNA expressions of LUCAT1, miR-199a-5p and hypoxia inducible fator 1α (HIF-1α) in above mentioned tissues and cell lines; CCK-8 assay was used to evaluate the proliferation of 786-O cells; Transwell assay was used to evaluate the migration of 786-O cells; Dual luciferase reporter gene assay was performed to validate the relationship between LUCAT1 and miR-199a-5p; and Western blotting was conducted to detect the effect of LUCAT1 and miR-199a-5p on the protein expression of HIF-1α. Results: LUCAT1 was significantly up-regulated in ccRCC tissues and cell lines (all P<0.01), and its knockdown significantly inhibited the proliferation and migration of 786-O cells (all P<0.01). miR-199a-5p was low-expressed in ccRCC tissues and cell lines (all P<0.01), StarBase analysis showed that LUCAT1 contained a conserved target site for miR-199a-5p. miR-199a-5p exerted significant suppression on the luciferase activity of LUCAT1-Wt (P<0.01), and LUCAT1 knockdown significantly reduced miR-199a-5p expression (P< 0.01). LUCAT1 was low-expressed in 786-O cells transfected with miR-199a-5p mimics, however, it was attenuated after co-transfection with LUCAT1. The mRNA and protein expressions of HIF-1α in 786-O cells transfected with miR-199a-5p mimics were up-regulated, which was then reversed by LUCAT1 over-expression (P<0.05 or P<0.01). miR-199a-5p over-expression suppressed the proliferation and migration of 786-O cells, which was partially attenuated by LUCAT1 transfection (P<0.05 or P<0.01). Conclusion: LUCAT1 exerts oncogenic function in ccRCC via regulating miR-199a-5p/HIF-1α axis.·

Sevoflurane preconditioning protects against spinal cord ischemia/reperfusion injury by up-regulating miR-199a-5p in rats / 中国药理学通报

Aim To investigate the effect of sevoflurane preconditioning on spinal cord ischemia-reperfusion in-jury ( SCIRI ) of miR-199a-5p in rats. Methods Twenty-four SD rats were randomly divided into: group of sham ( Sham group) , group of ischemia-reperfusion ( I/R group ) , and group of sevoflurane and control ( SEVO+I/R group) . Sham group received the same operation, but did not inhale sevoflurane or close the aortic arch; SCIRI model was established after 14 min of the aortic arch of the non-invasive arterial clip in I/R group. SEVO+I/R group, before the establishment of SCIRI model, was inhaled 2.4% sevoflurane for 3 h. Basso Beattie Bresnahan scoring method was used to evaluate neuromotor function and TUNEL staining to observe apoptosis. Evans blue ( EB) was used to de-termine blood-spinal cord barrier ( BSCB) permeabili-ty; real-time qPCR to detect miR-199a-5p content;Western blot to measure the levels of caspase-9 and Bcl-2 in spinal cord tissues. Results Compared with sham group, the score of neuromotor function in I/R group decreased, cell apoptosis rate increased, BSCB permeability increased, miR-199a-5p expression de-creased, caspase-9 expression increased, and Bcl-2 expression decreased; compared with I/R group, the neurological motor function score of SEVO+I/R group increased, the apoptotic rate decreased, the BSCB per-meability decreased, the expression of miR-199a-5p increased, the expression of caspase-9 decreased, and the expression of Bcl-2 increased. Conclusion Sevoflurane pretreatment may reduce BSCB permeabili-ty and neuronal apoptosis by up-regulation of miR-199a-5p and protection of SCIRI in rats.

Studies of the mechanism of endothelial dysfunction in rats under intermittent hypoxia / 天津医药

Objective To explore the mechanism of vessel endothelial dysfunction in rats under intermittent hypoxia (IH). Methods The respiratory simulation system was used to simulate IH. Sixty C57BL/6J rats (male) were randomized into control group and IH group. The rats of IH group were exposed to IH 8 hours per day for 6 weeks. The serum levels of hypoxia inducible factor (HIF)-1a and stromal cell derived factor (SDF)-1a were assessed by ELISA. The serum levels of reactive oxygen species (ROS) were detected in two groups. The serum expression of miR-199a-5p was detected by real-time fluorescent quantitative PCR in two groups. The dual luciferase report system and point mutation test were used to verify target gene for HIF-1a. Results The serum levels of HIF-1a and SDF-1a were significantly higher in IH group than those of control group (μg/L:1.60±0.02 vs. 1.19±0.02, 1 823.00±8.97 vs. 1 444.00±17.90, P<0.01). The serum level of ROS was significantly higher in IH group than that of control group (U/mL:487.66±35.73 vs. 211.57±23.82, P<0.01). The serum level of miR-199a-5p expression was significantly lower in IH group compared to that of control group (1.31±0.07 vs. 3.47± 0.17, P<0.01). The result of dual luciferase reporter gene detection confirmed that target gene of miR-199a-5p was HIF-1a. Conclusion The serum level of miR-199a-5p is decreased first due to IH, and then its target gene (HIF-1a) is increased. HIF-1a can induce the increased level of SDF-1a, and its receptor (CXCR-4 ) is also increased. Finally, HIF-1a can increase the serum level of ROS, resulting in the endothelial dysfunction.

miRNA-199 a-5 p inhibit the invasion of MDA-MB-231 cells via regulating ERK5 through SP1 / 临床与实验病理学杂志

Purpose To study the effect and mechanism of miR-199a-5p on the invasion of breast cancer MDA-MB-231 cells. Meth-ods miR-199a-5p mimic was transfected into MDA-MB-231 cells. Influence of miR-199a-5p on the invasion of MDA-MB-231 cell was displayed by Transwell, the expression of epithelial-mesenchymal transition ( EMT) molecular markers ( E-cadherin, vimentin) regulated by miR-199a-5p was determined using immunofluorescence and Western blot. Western blot was employed to assess the levels of ERK5, pERK5, EGF and SP1 in MDA-MB-231 cells dealt with miR-199a-5p mimic and LNA-siRNA. Chromatin immunoprecipita-tion (CHIP) was applied for displaying the reaction of SP1 with ERK5 promoter. Results miR-199a-5p could inhibit the invasion of MDA-MB-231 cells, decrease the expression of vimentin and enhance E-cadherin. Meanwhile, miR-199a-5p decreased the expression of ERK5 and pERK5, the levels of EGF and SP1 were also downregulated. On the contrary, the levels of EGF, SP1, ERK5 and pERK5 were enhanced by employing LNA-siRNA targeting miR-199a-5p. SP1 could bind with ERK5 promoter. Conclusions miR-199a-5p could reduce the expression of ERK5 and pERK5 through regulating EGF and SP1, which functioning the inhibitory effect on invasion of MDA-MB-231 breast cancer cells.

The effect on miRNAs of replant liver cancer rats treated by Aitongxiao granule / 中国药学杂志

OBJECTIVE: To explore the effect of Aitongxiao granule (traditional Chinese medicines) therapy on miRNAs of replant liver cancer rats. METHODS: The 60 replant liver cancer rats were randomly divided into high dose(A), middle dose(B), lower dose(C), 5-Fu(D), distilled water(E) groups. After 14 days of experimental treatment, the expressions of miR-199a-3p,miR-199a-5p, miR-18 in liver cancer tissues were detected with qRT-PCR. RESULTS: Before experimental treatment, in comparison with E group, the level of miR-18 was higher but level of miR-199a-3p, miR-199a-5p were lower in A,B,C,D groups(P < 0.01). After 14 days of experimental treatment, in comparison with E group, the level of miR-18 was lower but level of miR-199a-3p, miR-199a-5p were higher in A,B,C,D groups(P < 0.01). The more significant differences were found in B group than that in D group. CONCLUSION: The Aitongxiao granule has the regulative effects on miRNAs of replant liver cancer rats. Its therapeutical effects relate to the miRNAs expressions of liver cellular cancer development.