At present,the role of many long non-coding RNAs(lncRNAs)as tumor suppressors in the formation and development of cervical cancer(CC)has been studied.However,lncRNA prostate cancer gene expression marker 1(PCGEM1),who...At present,the role of many long non-coding RNAs(lncRNAs)as tumor suppressors in the formation and development of cervical cancer(CC)has been studied.However,lncRNA prostate cancer gene expression marker 1(PCGEM1),whose high expression not only aggravates ovarian cancer but also can induce tumorigenesis and endometrial cancer progression,has not been studied in CC.The objective of this study was to investigate the expression and the underlying role of PCGEM1 in CC.The relative expression of PCGEM1 in CC cells was detected by real-time PCR.After the suppression of PCGEM1 expression by shRNA,the changes in the proliferation,migration,and invasion capacities were detected via CCK-8 assay,EdU assay,and colony formation assay wound healing assay.Transwell assay and the changes in expressions of epithelial-to-mesenchymal transition(EMT)markers were determined by western blot and immunofluorescence.The interplay among PCGEM1,miR-642a-5p,and kinesin family member 5B(KIF5B)was confirmed by bioinformatics analyses and luciferase reporter assay.Results showed that PCGEM1 expressions were up-regulated within CC cells.Cell viabilities,migration,and invasion were remarkably reduced after the suppression of PCGEM1 expression by shRNA in Hela and SiHa cells.N-cadherin was silenced,but E-cadherin expression was elevated by sh-PCGEM1.Moreover,by sponging miR-642a-5p in CC,PCGEM1 was verified as a competitive endogenous RNA(ceRNA)that modulates KIF5B levels.MiR-642a-5p down-regulation partially rescued sh-PCGEM1’s inhibitory effects on cell proliferation,migration,invasion,and EMT process.In conclusion,the PCGEM1/miR-642a-5p/KIF5B signaling axis might be a novel therapeutic target in CC.This study provides a research basis and new direction for targeted therapy of CC.展开更多
Background: Regulatory B cells(Bregs) is an indispensable element in inducing immune tolerance after liver transplantation. As one of the microRNAs(miRNAs), mi R-29a-3p also inhibits translation by degrading the targe...Background: Regulatory B cells(Bregs) is an indispensable element in inducing immune tolerance after liver transplantation. As one of the microRNAs(miRNAs), mi R-29a-3p also inhibits translation by degrading the target mRNA, and yet the relationship between Bregs and mi R-29a-3p has not yet been fully explored. This study aimed to investigate the impact of miR-29a-3p on the regulation of differentiation and immunosuppressive functions of memory Bregs(m Bregs) and ultimately provide potentially effective therapies in inducing immune tolerance after liver transplantation. Methods: Flow cytometry was employed to determine the levels of Bregs in peripheral blood mononuclear cells. TaqMan low-density array miRNA assays were used to identify the expression of different miRNAs, electroporation transfection was used to induce mi R-29a-3p overexpression and knockdown, and dual luciferase reporter assay was used to verify the target gene of miR-29a-3p. Results: In patients experiencing acute rejection after liver transplantation, the proportions and immunosuppressive function of m Bregs in the circulating blood were significantly impaired. mi R-29a-3p was found to be a regulator of m Bregs differentiation. Inhibition of miR-29a-3p, which targeted nuclear factor of activated T cells 5(NFAT5), resulted in a conspicuous boost in the differentiation and immunosuppressive function of m Bregs. The inhibition of mi R-29a-3p in CD19~+ B cells was capable of raising the expression levels of NFAT5, thereby promoting B cells to differentiate into m Bregs. In addition, the observed enhancement of differentiation and immunosuppressive function of m Bregs upon mi R-29a-3p inhibition was abolished by the knockdown of NFAT5 in B cells. Conclusions: mi R-29a-3p was found to be a crucial regulator for m Bregs differentiation and immunosuppressive function. Silencing mi R-29a-3p could be a potentially effective therapeutic strategy for inducing immune tolerance after liver transplantation.展开更多
目的探究LncRNA ZFAS1是否通过调节miR-34b-5p促进弥漫大B细胞淋巴瘤(diffuse large B lymphoma,DLBCL)细胞增殖并抑制细胞凋亡。方法实时荧光定量PCR(RT-qPCR)检测30例DLBCL患者肿瘤组织及DLBCL细胞株中LncRNA ZFAS1和miR-34b-5p转录...目的探究LncRNA ZFAS1是否通过调节miR-34b-5p促进弥漫大B细胞淋巴瘤(diffuse large B lymphoma,DLBCL)细胞增殖并抑制细胞凋亡。方法实时荧光定量PCR(RT-qPCR)检测30例DLBCL患者肿瘤组织及DLBCL细胞株中LncRNA ZFAS1和miR-34b-5p转录水平。将含有敲低ZFAS1序列的载体和抑制或过表达miR-34b-5p的序列使用Lipofectamine 2000试剂转染到SU-DHL-4细胞,RT-qPCR检测敲低和过表达效率,双荧光素酶报告基因实验分析ZFAS1和miR-34b-5p的靶向关系。最后SU-DHL-4细胞随机分组为对照组、sh-ZFAS1组、miR-34b-5p inhibitor组和shRNA-ZFAS1+miR-34b-5p inhibitor组,克隆形成实验和流式细胞术分别检测细胞增殖和凋亡;蛋白质印迹法检测凋亡相关蛋白的表达。结果在DLBCL患者和细胞系中ZFAS1的表达量增加,而miR-34b-5p的表达量减少,同时ZFAS1靶向负调节miR-34b-5p的表达。与对照组相比较,sh-ZFAS1组miR-34b-5p的表达量增加,miR-34b-5p inhibitor组miR-34b-5p的表达量减少。与miR-34b-5p inhibitor组相比较,sh-ZFAS1和miR-34b-5p inhibitor共转染组中miR-34b-5p的表达量增加。敲低ZFAS1的表达抑制SU-DHL-4细胞增殖,促进细胞凋亡,并降低线粒体膜电位,同时升高Bax/Bcl-2和cleaved caspase-3/caspase-3比值。结论LncRNA ZFAS1通过下调miR-34b-5p促进SU-DHL-4细胞增殖并抑制细胞凋亡。展开更多
目的探讨环状RNA circATP2B1对胃癌细胞增殖和侵袭的影响及其可能的分子机制。方法收集2018年7月至2021年2月福建医科大学附属泉州第一医院胃肠肝胆外科行手术切除并病理学诊断的44例胃癌组织标本及癌旁组织标本。选取4株胃癌细胞系(SGC...目的探讨环状RNA circATP2B1对胃癌细胞增殖和侵袭的影响及其可能的分子机制。方法收集2018年7月至2021年2月福建医科大学附属泉州第一医院胃肠肝胆外科行手术切除并病理学诊断的44例胃癌组织标本及癌旁组织标本。选取4株胃癌细胞系(SGC7901、HS-746T、MGC803、BGC823)和正常胃黏膜上皮细胞系(GES-1)。RT-qPCR检测胃癌组织和细胞系中circATP2B1表达。将circATP2B1表达最低的胃癌细胞分为对照组(转染阴性对照质粒)和实验组(转染circATP2B1过表达质粒)。分别采用MTT法和Transwell小室法检测各组胃癌细胞的增殖活性和侵袭能力。生物信息学和双荧光素酶报告基因实验分析circATP2B1可能的作用机制,RT-qPCR和Western blot检测circATP2B1下游基因的表达。结果胃癌组织circATP2B1表达量显著低于癌旁组织(0.92±0.08 vs 3.62±0.23,P<0.01)。胃癌细胞系circATP2B1表达量均显著低于GES-1细胞(P<0.01),其中以HS-746T细胞的表达量最低(P<0.01)。与对照组相比,实验组HS-746T细胞的增殖活性显著降低(P<0.05),侵袭能力显著下降(P<0.01)。生物信息学和双荧光素酶报告基因实验显示circATP2B1可靶向结合miR-452-5p(P<0.01),miR-452-5p可靶向结合原钙黏附蛋白9(PCDH9)(P<0.01)。与对照组比较,实验组HS-746T细胞miR-452-5p表达显著下降(1.00±0.04 vs 0.24±0.05,P<0.01),PCDH9基因表达显著上升(P<0.01)。结论circATP2B1在胃癌组织和细胞系中低表达,circATP2B1通过靶向结合miR-452-5p正调控PCDH9基因表达,进而降低胃癌HS-746T细胞增殖和侵袭能力。展开更多
基金the Nantong Municipal Health Commission Research Project(MB2021054)for this study.
文摘At present,the role of many long non-coding RNAs(lncRNAs)as tumor suppressors in the formation and development of cervical cancer(CC)has been studied.However,lncRNA prostate cancer gene expression marker 1(PCGEM1),whose high expression not only aggravates ovarian cancer but also can induce tumorigenesis and endometrial cancer progression,has not been studied in CC.The objective of this study was to investigate the expression and the underlying role of PCGEM1 in CC.The relative expression of PCGEM1 in CC cells was detected by real-time PCR.After the suppression of PCGEM1 expression by shRNA,the changes in the proliferation,migration,and invasion capacities were detected via CCK-8 assay,EdU assay,and colony formation assay wound healing assay.Transwell assay and the changes in expressions of epithelial-to-mesenchymal transition(EMT)markers were determined by western blot and immunofluorescence.The interplay among PCGEM1,miR-642a-5p,and kinesin family member 5B(KIF5B)was confirmed by bioinformatics analyses and luciferase reporter assay.Results showed that PCGEM1 expressions were up-regulated within CC cells.Cell viabilities,migration,and invasion were remarkably reduced after the suppression of PCGEM1 expression by shRNA in Hela and SiHa cells.N-cadherin was silenced,but E-cadherin expression was elevated by sh-PCGEM1.Moreover,by sponging miR-642a-5p in CC,PCGEM1 was verified as a competitive endogenous RNA(ceRNA)that modulates KIF5B levels.MiR-642a-5p down-regulation partially rescued sh-PCGEM1’s inhibitory effects on cell proliferation,migration,invasion,and EMT process.In conclusion,the PCGEM1/miR-642a-5p/KIF5B signaling axis might be a novel therapeutic target in CC.This study provides a research basis and new direction for targeted therapy of CC.
基金supported by grants from the National Natural Science Foundation of China (82070676)Jiangsu Provincial Medi-cal Innovation Center (CXZX202203)Jiangsu Provincial Medi-cal Key Laboratory (ZDXYS202201)。
文摘Background: Regulatory B cells(Bregs) is an indispensable element in inducing immune tolerance after liver transplantation. As one of the microRNAs(miRNAs), mi R-29a-3p also inhibits translation by degrading the target mRNA, and yet the relationship between Bregs and mi R-29a-3p has not yet been fully explored. This study aimed to investigate the impact of miR-29a-3p on the regulation of differentiation and immunosuppressive functions of memory Bregs(m Bregs) and ultimately provide potentially effective therapies in inducing immune tolerance after liver transplantation. Methods: Flow cytometry was employed to determine the levels of Bregs in peripheral blood mononuclear cells. TaqMan low-density array miRNA assays were used to identify the expression of different miRNAs, electroporation transfection was used to induce mi R-29a-3p overexpression and knockdown, and dual luciferase reporter assay was used to verify the target gene of miR-29a-3p. Results: In patients experiencing acute rejection after liver transplantation, the proportions and immunosuppressive function of m Bregs in the circulating blood were significantly impaired. mi R-29a-3p was found to be a regulator of m Bregs differentiation. Inhibition of miR-29a-3p, which targeted nuclear factor of activated T cells 5(NFAT5), resulted in a conspicuous boost in the differentiation and immunosuppressive function of m Bregs. The inhibition of mi R-29a-3p in CD19~+ B cells was capable of raising the expression levels of NFAT5, thereby promoting B cells to differentiate into m Bregs. In addition, the observed enhancement of differentiation and immunosuppressive function of m Bregs upon mi R-29a-3p inhibition was abolished by the knockdown of NFAT5 in B cells. Conclusions: mi R-29a-3p was found to be a crucial regulator for m Bregs differentiation and immunosuppressive function. Silencing mi R-29a-3p could be a potentially effective therapeutic strategy for inducing immune tolerance after liver transplantation.
文摘目的探讨环状RNA circATP2B1对胃癌细胞增殖和侵袭的影响及其可能的分子机制。方法收集2018年7月至2021年2月福建医科大学附属泉州第一医院胃肠肝胆外科行手术切除并病理学诊断的44例胃癌组织标本及癌旁组织标本。选取4株胃癌细胞系(SGC7901、HS-746T、MGC803、BGC823)和正常胃黏膜上皮细胞系(GES-1)。RT-qPCR检测胃癌组织和细胞系中circATP2B1表达。将circATP2B1表达最低的胃癌细胞分为对照组(转染阴性对照质粒)和实验组(转染circATP2B1过表达质粒)。分别采用MTT法和Transwell小室法检测各组胃癌细胞的增殖活性和侵袭能力。生物信息学和双荧光素酶报告基因实验分析circATP2B1可能的作用机制,RT-qPCR和Western blot检测circATP2B1下游基因的表达。结果胃癌组织circATP2B1表达量显著低于癌旁组织(0.92±0.08 vs 3.62±0.23,P<0.01)。胃癌细胞系circATP2B1表达量均显著低于GES-1细胞(P<0.01),其中以HS-746T细胞的表达量最低(P<0.01)。与对照组相比,实验组HS-746T细胞的增殖活性显著降低(P<0.05),侵袭能力显著下降(P<0.01)。生物信息学和双荧光素酶报告基因实验显示circATP2B1可靶向结合miR-452-5p(P<0.01),miR-452-5p可靶向结合原钙黏附蛋白9(PCDH9)(P<0.01)。与对照组比较,实验组HS-746T细胞miR-452-5p表达显著下降(1.00±0.04 vs 0.24±0.05,P<0.01),PCDH9基因表达显著上升(P<0.01)。结论circATP2B1在胃癌组织和细胞系中低表达,circATP2B1通过靶向结合miR-452-5p正调控PCDH9基因表达,进而降低胃癌HS-746T细胞增殖和侵袭能力。
