AIM:To investigate the biological role and underlying mechanism of miR-132 in colorectal cancer(CRC)progression and invasion.METHODS:Quantitative RT-PCR analysis was used to examine the expression levels of miR-132 in...AIM:To investigate the biological role and underlying mechanism of miR-132 in colorectal cancer(CRC)progression and invasion.METHODS:Quantitative RT-PCR analysis was used to examine the expression levels of miR-132 in five CRC cell lines(SW480,SW620,HCT116,HT29 and LoVo)and a normal colonic cell line NCM460,as well as in tumor tissues with or without metastases.The KaplanMeier method was used to analyze the prognostic significance of miR-132 in CRC patients.The biological effects of miR-132 were assessed in CRC cell lines using the transwell assay.Quantitative RT-PCR and western blot analyses were employed to evaluate the expression of miR-132 targets.The regulation of ZEB2 by miR-132was confirmed using the luciferase activity assay.RESULTS:miR-132 was significantly down-regulated in the CRC cell lines compared with the normal colonic cell line(P<0.05),as well as in the CRC tissues withdistant metastases compared with the tissues without metastases(10.52±4.69 vs 23.11±7.84)(P<0.001).Down-regulation of miR-132 was associated with tumor size(P=0.016),distant metastasis(P=0.002),and TNM stage(P=0.020)in CRC patients.Kaplan-Meier survival curve analysis indicated that patients with low expression of miR-132 tended to have worse diseasefree survival than patients with high expression of miR-132(P<0.001).Moreover,ectopic expression of miR-132 markedly inhibited cell invasion(P<0.05)and the epithelial-mesenchymal transition(EMT)in CRC cell lines.Further investigation revealed ZEB2,an EMT regulator,was a downstream target of miR-132.CONCLUSION:Our study indicated that miR-132 plays an important role in the invasion and metastasis of CRC.展开更多
Objective:To investigate the effects of co-transfection of miR-520c-3p and miR-132 on proliferation and apoptosis of hepatocellular carcinoma Huh7.Methods:Hepatocellular carcinoma Huh7 was cultured in vitro and lipido...Objective:To investigate the effects of co-transfection of miR-520c-3p and miR-132 on proliferation and apoptosis of hepatocellular carcinoma Huh7.Methods:Hepatocellular carcinoma Huh7 was cultured in vitro and lipidosome was used to transfect miR-520c-3p and miR-132 respectively or together.The effects of transfection of miR-520c-3p and miR-132 on proliferation and apoptosis of Huh7 were detected by CCK8 and Annexin V staining and flow cytometry,and the expression level of the targeted gene of over-expressed miR-520c-3p and miR-132 was determined by Western blot and realtime PCR.Results:Compared with the control group,the proliferation ability of Huh7 of the single transfected and co-transfected miR-520c-3p and miR-132 decreased significantly,and the apoptosis ratio increased distinctly(P<0.05).Besides,the affect of the co-transfection group was better than that of the single transfection group.The protein levels of GPC3(Glypican-3) and YAP(Yes-associated protein),the target genes transfected only by miR-520c-3p and miR-132,respectively,reduced obviously(P<0.05),which was similar with the co-infected cells,but cells transfected by miR-132 only showed a decrease of YAP.Conclusions:The co-transfection of miR-520c-3p and miR-132 can target-regulate the expression of GPC3 and YAP,enhance the exhibition effect on proliferation of hepatocellular carcinoma Huh7 and induce cell apoptosis synergistically.展开更多
目的:miR-24、miR-132在类风湿关节炎(RA)患者外周血单个核细胞(PBMC)中的表达及临床意义。方法:收集160例RA患者、65例骨关节炎(OA)患者和65名健康对照者作为研究对象。RA患者按照DAS28评分分为低活动组(n=64)和中高活动组(n=96),Shar...目的:miR-24、miR-132在类风湿关节炎(RA)患者外周血单个核细胞(PBMC)中的表达及临床意义。方法:收集160例RA患者、65例骨关节炎(OA)患者和65名健康对照者作为研究对象。RA患者按照DAS28评分分为低活动组(n=64)和中高活动组(n=96),Sharp评分分为非骨侵蚀组(n=73)和骨侵蚀组(n=87)。采用实时定量PCR(RT-PCR)法检测各组PBMC中miR-24、miR-132表达水平。应用ROC曲线分析miR-24、miR-132对RA的诊断价值,Pearson相关分析RA患者miR-24、miR-132与DAS28评分、Sharp评分的相关性。结果:RA组PBMC中miR-24(3.62±0.75 vs 0.91±0.18,0.86±0.13)及miR-132(2.48±0.23 vs 1.07±0.14,0.96±0.11)表达水平均明显高于OA组和对照组(P<0.01)。中高活动组PBMC中miR-24(5.86±1.15 vs 1.20±0.41)及miR-132(3.25±0.42 vs 1.14±0.19)表达水平明显高于低活动组(P<0.01)。骨侵蚀组PBMC中miR-24(6.12±1.24 vs 1.14±0.39)及miR-132(3.48±0.46 vs 1.06±0.17)表达水平均明显高于非骨侵蚀组(P<0.01)。ROC曲线分析显示miR-24、miR-132诊断RA的临界值分别为1.93、1.65,两项联合诊断RA的AUC(0.925,95%CI:0.863~0.972)最大,其敏感度和特异度为90.2%和85.8%。相关分析显示,RA患者miR-24、miR-132与Sharp评分、DAS28评分均呈正相关(P<0.05)。结论:RA患者PBMC中miR-24、miR-132高表达,与疾病活动度和骨侵蚀程度相关,两项联合检测有助于提高RA诊断的价值。展开更多
MicroRNA-132(miR-132), a small RNA that regulates gene expression, is known to promote neurogenesis in the embryonic nervous system and adult brain.Although exposure to psychoactive substances can increase miR-132 exp...MicroRNA-132(miR-132), a small RNA that regulates gene expression, is known to promote neurogenesis in the embryonic nervous system and adult brain.Although exposure to psychoactive substances can increase miR-132 expression in cultured neural stem cells(NSCs)and the adult brain of rodents, little is known about its role in opioid addiction. So, we set out to determine the effect of miR-132 on differentiation of the NSCs and whether this effect is involved in opioid addiction using the rat morphine self-administration(MSA) model. We found that miR-132 overexpression enhanced the differentiation of NSCs in vivo and in vitro. Similarly, speci?c overexpression of miR-132 in NSCs of the adult hippocampal dentate gyrus(DG) during the acquisition stage of MSA potentiated morphine-seeking behavior. These ?ndings indicate that miR-132 is involved in opioid addiction,probably by promoting the differentiation of NSCs in the adult DG.展开更多
目的探讨血清miR-132及miR-183在胃癌诊断中的价值。方法选取2014年1月-2017年3月海南西部中心医院收治的96例胃癌患者(胃癌组)和45例体检正常者(对照组),采用实时定量PCR法检测两组血清miR-132及miR-183表达水平,应用ROC曲线分析miR-13...目的探讨血清miR-132及miR-183在胃癌诊断中的价值。方法选取2014年1月-2017年3月海南西部中心医院收治的96例胃癌患者(胃癌组)和45例体检正常者(对照组),采用实时定量PCR法检测两组血清miR-132及miR-183表达水平,应用ROC曲线分析miR-132及miR-183对胃癌的诊断价值。结果胃癌组与对照组的性别(男/女:65/31 vs28/17)、年龄[(62.84±10.36)岁vs(60.46±9.72)岁]差异均无统计学意义(P均>0.05)。胃癌组血清miR-132(0.64±0.08 vs0.12±0.03)及miR-183(5.13±0.34 vs 0.87±0.05)表达水平均明显高于对照组(t=11.834、t=15.627,P<0.01)。ROC曲线分析显示,血清miR-132及miR-183联合诊断胃癌的AUC(95%CI)为[0.958(0.892~0.996)],明显优于miR-132[0.864(0.805~0.926)](Z=7.638,P=0.000)和miR-183[0.904(0.845~0.967)](Z=4.926,P=0.016),其敏感度和特异度为96.2%和87.4%。Pearson相关分析显示,胃癌患者血清miR-132与miR-183呈正相关(r=0.758,P<0.01)。结论血清miR-132及miR-183在胃癌患者中明显上调,有望作为胃癌诊断的新型肿瘤标记物。展开更多
文摘AIM:To investigate the biological role and underlying mechanism of miR-132 in colorectal cancer(CRC)progression and invasion.METHODS:Quantitative RT-PCR analysis was used to examine the expression levels of miR-132 in five CRC cell lines(SW480,SW620,HCT116,HT29 and LoVo)and a normal colonic cell line NCM460,as well as in tumor tissues with or without metastases.The KaplanMeier method was used to analyze the prognostic significance of miR-132 in CRC patients.The biological effects of miR-132 were assessed in CRC cell lines using the transwell assay.Quantitative RT-PCR and western blot analyses were employed to evaluate the expression of miR-132 targets.The regulation of ZEB2 by miR-132was confirmed using the luciferase activity assay.RESULTS:miR-132 was significantly down-regulated in the CRC cell lines compared with the normal colonic cell line(P<0.05),as well as in the CRC tissues withdistant metastases compared with the tissues without metastases(10.52±4.69 vs 23.11±7.84)(P<0.001).Down-regulation of miR-132 was associated with tumor size(P=0.016),distant metastasis(P=0.002),and TNM stage(P=0.020)in CRC patients.Kaplan-Meier survival curve analysis indicated that patients with low expression of miR-132 tended to have worse diseasefree survival than patients with high expression of miR-132(P<0.001).Moreover,ectopic expression of miR-132 markedly inhibited cell invasion(P<0.05)and the epithelial-mesenchymal transition(EMT)in CRC cell lines.Further investigation revealed ZEB2,an EMT regulator,was a downstream target of miR-132.CONCLUSION:Our study indicated that miR-132 plays an important role in the invasion and metastasis of CRC.
基金supported by Supported by Education Department of Hubei Province science and technology research project(NO.B2015230)Applied Fundamental Research Project of Wuhan Municipal Science and Technology Bureau(Grant No.2015061701011630)+1 种基金Medical Scientific Research Project of Health and Familly Planning Commission of Wuhan Municipality(Grant No.WX16E12)the fourth batch of "Hanyang Talent Associate Program"
文摘Objective:To investigate the effects of co-transfection of miR-520c-3p and miR-132 on proliferation and apoptosis of hepatocellular carcinoma Huh7.Methods:Hepatocellular carcinoma Huh7 was cultured in vitro and lipidosome was used to transfect miR-520c-3p and miR-132 respectively or together.The effects of transfection of miR-520c-3p and miR-132 on proliferation and apoptosis of Huh7 were detected by CCK8 and Annexin V staining and flow cytometry,and the expression level of the targeted gene of over-expressed miR-520c-3p and miR-132 was determined by Western blot and realtime PCR.Results:Compared with the control group,the proliferation ability of Huh7 of the single transfected and co-transfected miR-520c-3p and miR-132 decreased significantly,and the apoptosis ratio increased distinctly(P<0.05).Besides,the affect of the co-transfection group was better than that of the single transfection group.The protein levels of GPC3(Glypican-3) and YAP(Yes-associated protein),the target genes transfected only by miR-520c-3p and miR-132,respectively,reduced obviously(P<0.05),which was similar with the co-infected cells,but cells transfected by miR-132 only showed a decrease of YAP.Conclusions:The co-transfection of miR-520c-3p and miR-132 can target-regulate the expression of GPC3 and YAP,enhance the exhibition effect on proliferation of hepatocellular carcinoma Huh7 and induce cell apoptosis synergistically.
文摘目的:miR-24、miR-132在类风湿关节炎(RA)患者外周血单个核细胞(PBMC)中的表达及临床意义。方法:收集160例RA患者、65例骨关节炎(OA)患者和65名健康对照者作为研究对象。RA患者按照DAS28评分分为低活动组(n=64)和中高活动组(n=96),Sharp评分分为非骨侵蚀组(n=73)和骨侵蚀组(n=87)。采用实时定量PCR(RT-PCR)法检测各组PBMC中miR-24、miR-132表达水平。应用ROC曲线分析miR-24、miR-132对RA的诊断价值,Pearson相关分析RA患者miR-24、miR-132与DAS28评分、Sharp评分的相关性。结果:RA组PBMC中miR-24(3.62±0.75 vs 0.91±0.18,0.86±0.13)及miR-132(2.48±0.23 vs 1.07±0.14,0.96±0.11)表达水平均明显高于OA组和对照组(P<0.01)。中高活动组PBMC中miR-24(5.86±1.15 vs 1.20±0.41)及miR-132(3.25±0.42 vs 1.14±0.19)表达水平明显高于低活动组(P<0.01)。骨侵蚀组PBMC中miR-24(6.12±1.24 vs 1.14±0.39)及miR-132(3.48±0.46 vs 1.06±0.17)表达水平均明显高于非骨侵蚀组(P<0.01)。ROC曲线分析显示miR-24、miR-132诊断RA的临界值分别为1.93、1.65,两项联合诊断RA的AUC(0.925,95%CI:0.863~0.972)最大,其敏感度和特异度为90.2%和85.8%。相关分析显示,RA患者miR-24、miR-132与Sharp评分、DAS28评分均呈正相关(P<0.05)。结论:RA患者PBMC中miR-24、miR-132高表达,与疾病活动度和骨侵蚀程度相关,两项联合检测有助于提高RA诊断的价值。
基金supported by grants from the National Natural Science Foundation(81471353 and 81771433)the National Basic Research Development Program of China(2015CB553500)the Science Fund for Creative Research Groups from the National Natural Science Foundation of China(81521063)
文摘MicroRNA-132(miR-132), a small RNA that regulates gene expression, is known to promote neurogenesis in the embryonic nervous system and adult brain.Although exposure to psychoactive substances can increase miR-132 expression in cultured neural stem cells(NSCs)and the adult brain of rodents, little is known about its role in opioid addiction. So, we set out to determine the effect of miR-132 on differentiation of the NSCs and whether this effect is involved in opioid addiction using the rat morphine self-administration(MSA) model. We found that miR-132 overexpression enhanced the differentiation of NSCs in vivo and in vitro. Similarly, speci?c overexpression of miR-132 in NSCs of the adult hippocampal dentate gyrus(DG) during the acquisition stage of MSA potentiated morphine-seeking behavior. These ?ndings indicate that miR-132 is involved in opioid addiction,probably by promoting the differentiation of NSCs in the adult DG.
文摘目的探讨血清miR-132及miR-183在胃癌诊断中的价值。方法选取2014年1月-2017年3月海南西部中心医院收治的96例胃癌患者(胃癌组)和45例体检正常者(对照组),采用实时定量PCR法检测两组血清miR-132及miR-183表达水平,应用ROC曲线分析miR-132及miR-183对胃癌的诊断价值。结果胃癌组与对照组的性别(男/女:65/31 vs28/17)、年龄[(62.84±10.36)岁vs(60.46±9.72)岁]差异均无统计学意义(P均>0.05)。胃癌组血清miR-132(0.64±0.08 vs0.12±0.03)及miR-183(5.13±0.34 vs 0.87±0.05)表达水平均明显高于对照组(t=11.834、t=15.627,P<0.01)。ROC曲线分析显示,血清miR-132及miR-183联合诊断胃癌的AUC(95%CI)为[0.958(0.892~0.996)],明显优于miR-132[0.864(0.805~0.926)](Z=7.638,P=0.000)和miR-183[0.904(0.845~0.967)](Z=4.926,P=0.016),其敏感度和特异度为96.2%和87.4%。Pearson相关分析显示,胃癌患者血清miR-132与miR-183呈正相关(r=0.758,P<0.01)。结论血清miR-132及miR-183在胃癌患者中明显上调,有望作为胃癌诊断的新型肿瘤标记物。
