lncRNA MEG3 通过miR-9-5p/SOCS5 轴对宫颈癌细胞恶性生物学行为的影响

目的：探讨lncRNA 母源性印记基因3（maternal imprinting gene 3, MEG3）通过miR-9-5p/SOCS5 轴对宫颈癌细胞增殖、迁移、侵袭和上皮间质转化（epithelial-mesenchymal transition, EMT）的调控作用。方法: 收集2017 年1 月至2019 年6 月重庆市中医院手术切除的20 例宫颈癌患者的癌及癌旁组织标本;利用脂质体转染技术分别将pcDNA3.1-MEG3、si-MEG3、miR-9-5p mimics、miR-9-5p inhibitor 及其对照质粒等转染进宫颈癌HeLa 和SiHa 细胞,构建过表达和沉默细胞模型。用qPCR检测宫颈癌组织及细胞模型中MEG3、miR-9-5p 和SOCS5 表达水平,用CCK-8 法、Transwell 小室法检测细胞的增殖、迁移和侵袭能力,用细胞免疫荧光实验检测细胞中E-cadherin 和vimentin 表达水平。通过在线生物信息学TargetScan 数据库预测靶基因,用双荧光素酶报告基因实验验证miR-9-5p 分别与MEG3 和SOCS5 的靶向关系。结果: 分别与癌旁组织和宫颈上皮HcerEpic 细胞比较,宫颈癌组织和细胞系中MEG3 和SOCS5 表达显著下调、miR-9-5p 表达显著上调（均P<0.01）。TargetScan 数据库分析和双荧光素酶报告基因实验证实miR-9-5p 与MEG3 或SOCS5 存在靶向关系。MEG3 和SOCS5 显著抑制宫颈癌细胞的增殖、迁移与侵袭能力（均P<0.01）,miR-9-5p 显著提高细胞的增殖、迁移与侵袭能力（均P<0.01）。MEG3 和SOCS5 促进E-cadherin 表达、抑制vimentin表达;miR-9-5p 抑制E-cadherin 表达、促进vimentin 表达（P<0.05 或P<0.01）。结论: lncRNA MEG3 通过miR-9-5p/SOCS5 分子轴调控宫颈癌细胞的增殖、迁移、侵袭与EMT进程。     

miR-17-5p 通过下调BRMS1L表达调控鼻咽癌CNE2 细胞增殖、侵袭、迁移和凋亡

目的：探讨miR-17-5p 通过调控乳腺癌转移抑制基因1 相似基因（breast cancer metastasis suppressor 1 like,BRMS1-like 或BRMS1L）表达调控鼻咽癌细胞增殖和侵袭的分子机制。方法：收集2014 年1 月至2017 年12 月间平煤神马医疗集团总医院收治的40 例鼻咽癌患者切除的鼻咽癌组织及其相应的癌旁组织标本,以及鼻咽癌细胞系CNE 2、HONE 1、C666-1 和鼻咽部永生化上皮细胞株NP69,采用qPCR 检测miR-17-5p 在癌组织和癌细胞系中的表达水平。通过StarBase 数据库预测BRMS1L 与miR-17-5p 的靶向关系,采用双荧光素酶报告基因实验进行验证。WB检测转染miR-17-5p 模拟物和抑制物对CNE2 细胞中BRMS1L表达的影响;CCK-8、Transwell 和流式细胞术检测miR-17-5p/BRMS1L分子轴对CNE2 细胞增殖、侵袭、迁移和凋亡的影响。结果：miR-17-5p 在鼻咽癌组织和鼻咽癌细胞系中呈高表达（P<0.05 或P<0.01）,下调miR-17-5p 显著抑制CNE2 细胞增殖、侵袭、迁移但促进细胞凋亡（P<0.05 或P<0.01）。miR-17-5p 靶向作用于BRMS1L并下调其表达水平。过表达BRMS1L可显著抑制CNE2 细胞增殖、侵袭、迁移而促进细胞凋亡（均P<0.01）;而同时过表达miR-17-5p 和BRMS1L 可逆转上述作用（均P<0.01）。结论：miR-17-5p通过靶向下调BRMS1L的表达,进而促进CNE2 细胞增殖、侵袭和迁移而抑制细胞凋亡。     

miR-875-5p通过靶向USF2抑制胃癌细胞的增殖、迁移和侵袭

目的:探讨miR-875-5p对胃癌细胞增殖、迁移和侵袭的影响及其机制。方法:采用qPCR法检测胃癌细胞BGC-823、HGC-27、MGC-803、SGC-7901、AGS、MKN-45和胃黏膜上皮细胞GES-1中miR-875-5p的表达水平。利用脂质体转染技术,分别将miR-875-5p模拟物/抑制剂(mimic/inhibitor)及其阴性对照质粒(miR-NC/Anti-miR-NC)转染至AGS细胞/MKN-45细胞,构建过表达/抑制miR-875-5p的细胞模型,空白对照组(Control组)不转染。通过CCK-8、克隆形成、Transwell等实验分别检测miR-875-5p表达变化对细胞增殖、克隆形成、迁移和侵袭的影响。采用双荧光素酶报告基因实验验证miR-875-5p与上游刺激因子2(USF2)的靶向关系,WB实验验证miR-875-5p对USF2的调控作用并检测USF2蛋白的表达。构建MKN-45细胞裸鼠移植瘤模型,验证miR-875-5p过表达对MKN-45细胞成瘤能力的影响。结果:miR-875-5p在6种胃癌细胞中表达水平显著低于胃黏膜上皮细胞GES-1(均P<0.01)。与Control组和miR-NC组相比,miR-875-5p mimic组AGS细胞的增殖、克隆形成率、迁移和侵袭细胞数,以及USF2蛋白的表达均显著降低(P<0.05或P<0.01);miR-875-5p inhibitor组MKN-45细胞的增殖、克隆形成率、迁移和侵袭细胞数,以及USF2蛋白的表达均显著提高(P<0.05或P<0.01)。双荧光素酶报告基因实验证明,miR-875-5p能够直接靶向USF2基因。体内成瘤实验结果表明,过表达miR-875-5p显著抑制MKN-45细胞移植瘤的生长(均P<0.01)。结论:miR-875-5p通过靶向USF2抑制胃癌细胞的增殖、迁移和侵袭。     

miR-379-5p靶向CTSL调控肺癌细胞增殖、迁移、侵袭及凋亡的分子机制

目的:探讨微小RNA-379-5p（miR-379-5p）通过靶向组织蛋白酶L(CTSL)调控肺癌细胞增殖、迁移、侵袭及凋亡的作用机制。方法:选择本院收治的肺癌患者57例,取患者肺癌组织与癌旁组织,应用qRT-PCR法检测miR-379-5p与CTSL mRNA的表达水平;免疫组化法检测CTSL蛋白的表达情况。miR-con（miR-con组）、miR-379-5p mimics（miR-379-5p组）分别转染肺癌NC-H446细胞,miR-379-5p mimics与pcDNA（miR-379-5p+pcDNA组）、miR-379-5p mimics与pcDNA-CTSL（miR-379-5p+pcDNA-CTSL组）分别共转染肺癌NC-H446细胞,MTT检测细胞增殖情况;流式细胞术检测细胞凋亡率;Transwell迁移与侵袭实验检测细胞迁移与侵袭能力。双荧光素酶报告实验验证miR-379-5p与CTSL之间的靶向关系。Western blot检测CTSL、Cyclin D1、MMP-2、MMP-9、Cleaved caspase-3蛋白的表达。结果:肺癌组织中miR-379-5p的表达水平显著低于癌旁组织（P＜0.05）,而CTSL mRNA及蛋白阳性率均显著高于癌旁组织（P＜0.05）;与miR-con组比较,miR-379-5p组细胞增殖、迁移、侵袭能力显著降低（P＜0.05）,细胞凋亡率显著增加（P＜0.05）,明显抑制Cyclin D1、MMP-2、MMP-9蛋白表达（P＜0.05）,而促进Cleaved caspase-3蛋白表达（P＜0.05）;双荧光素酶报告实验证明miR-379-5p可负向调控CTSL表达与活性;CTSL过表达可逆转miR-379-5p过表达对肺癌细胞增殖、迁移、侵袭及凋亡的调控作用。结论:miR-379-5p过表达通过靶向CTSL而减弱肺癌细胞增殖、迁移及侵袭能力,诱导细胞凋亡。     

lncRNA MNX1-AS1 Promotes Glioblastoma Progression Through Inhibition of miR-4443

Long noncoding RNAs (lncRNAs) have been acknowledged as important regulators in various human cancers. lncRNA MNX1-AS1 has been shown to be an oncogene in epithelial ovarian cancer. However, the function of MNX1-AS1 in glioblastoma (GBM) remains largely unknown. Here we found that the expression of MNX1-AS1 was significantly upregulated in GBM tissues and cell lines. Knockdown of MNX1-AS1 significantly inhibited the proliferation, migration, and invasion of GBM cells. In terms of mechanism, we found that MNX1-AS1 could bind to miR-4443 in GBM cells. Overexpression of miR-4443 significantly inhibited the expression of MNX1-AS1 and vice versa. Moreover, there was an inverse correlation between the expression levels of MNX1-AS1 and miR-4443 in GBM tissues. We found that overexpression of miR-4443 inhibited the proliferation, migration, and invasion of GBM cells. We also showed that inhibition of miR-4443 reversed the effects of MNX1-AS1 knockdown on GBM cell proliferation, migration, and invasion. Taken together, we found that MNX1-AS1 promoted the proliferation, migration, and invasion of GBM cells through inhibiting miR-4443.     

miR-542-5p对卵巢癌细胞SKOV3恶性生物学行为的影响

目的:探讨miR-542-5p对卵巢癌细胞系SKOV3的增殖、迁移、侵袭、凋亡等恶性生物学行为的影响。方法:应用miR-542-5p mimics和mimics阴性对照 (mimics NC)分别转染卵巢癌细胞SKOV3。采用MTT实验、划痕试验、Transwell实验和流式细胞术检测过表达miR-542-5p对SKOV3细胞增殖、迁移、侵袭、凋亡的影响。结果:过表达miR-542-5p后,SKOV3细胞的增殖能力较阴性对照和正常SKOV3细胞明显降低（P<0.05）;Transwell实验和划痕实验显示,过表达miR-542-5p后,细胞的迁移和侵袭能力较阴性对照组明显下降（P<0.05）;流式细胞术结果显示,过表达miR-542-5p后,SKOV3细胞的凋亡率较阴性对照组升高,而对细胞周期无影响。结论:过表达miR-542-5p可以抑制卵巢癌细胞SKOV3的体外增殖、迁移和侵袭能力,诱导细胞凋亡。提示miR-542-5p在卵巢癌恶性生物学进程中可能发挥重要作用。     

BSN-AS2竞争性结合miR-219a-5p影响NSCLC细胞增殖、迁移、侵袭及凋亡

目的:探讨BSN-AS2竞争性结合miR-219a-5p调控非小细胞肺癌（non-small cell lung cancer,NSCLC)细胞增殖、迁移、侵袭和凋亡的机制。方法:qRT-PCR检测BSN-AS2和miR-219a-5p在NSCLC组织和细胞系中的表达;原位杂交FISH检测BSN-AS2和miR-219a-5p的信号强度;双荧光素酶报告基因检验miR-219a-5p 靶向调控BSN-AS2;Transwell、CCK8和Tunel细胞凋亡分别检测BSN-AS2-miR-219a-5p轴对侵袭、迁移、增殖和凋亡的影响;构建NSCLC裸鼠皮下移植瘤模型进行验证BSN-AS2-miR-219a-5p轴的调控作用。结果:BSN-AS2在NSCLC组织和细胞系中高表达,miR-219a-5p为低表达,BSN-AS2竞争性结合miR-219a-5p;siBSN-AS2组抑制NCI-H520细胞侵袭、迁移和增殖,且促进细胞凋亡,而In-miR-219a-5p组促进NCI-H520细胞侵袭、迁移和增殖,抑制细胞凋亡,siBSN-AS2+In-miR-219a-5p组相比siBSN-AS2组促进了NCI-H520细胞侵袭、迁移和增殖,抑制细胞凋亡;BSN-AS2增加体内肿瘤细胞增殖和肿瘤生长,miR-219a-5p则能抑制。结论:BSN-AS2竞争性结合miR-219a-5p促进NSCLC细胞侵袭、迁移和增殖,且抑制凋亡,而干扰BSN-AS2-miR-219a-5p轴可能作为抗NSCLC的新靶点。     

miR-363-3p Inhibits Osteosarcoma Cell Proliferation and Invasion via Targeting SOX4

miR-363-3p has been shown to suppress tumor growth and metastasis in various human cancers. However, the function of miR-363-3p in osteosarcoma (OS) has not been determined. In our study, we found that the expression of miR-363-3p was significantly downregulated in OS tissues compared with adjacent normal tissues. miR-363-3p expression was associated with the poor overall survival rate of OS patients. Moreover, we found that overexpression of miR-363-3p markedly inhibited the proliferation, migration, and invasion of U2OS and MG63 cells. Moreover, we found that SOX4 was a direct target of miR-363-3p in OS cells. Overexpression of miR-363-3p significantly inhibited the expression of SOX4. Expression levels of miR-363-3p and SOX4 were negatively correlated in OS tissues. Finally, we found that restoration of SOX4 attenuated the suppressive effects of miR-363-3p on the proliferation, migration, and invasion of U2OS and MG63 cells. Therefore, our findings demonstrated that miR-363-3p served as a tumor suppressor in OS tissues by targeting SOX4.     

MicroRNA-6884-5p Regulates the Proliferation,Invasion, and EMT of Gastric Cancer Cells by Directly Targeting S100A16

S100 binding protein A16 (S100A16) expression levels are closely associated with microRNA (miRNA) processing. Higher levels of S100A16 are reported during the progression of many cancers. Our study mainly explored the interaction between S100A16 and miR-6884-5p in gastric cancer (GC). Quantitative real-time polymerase chain reaction (qRT-PCR) was used to determine the level of S100A16 and miR-6884-5p in GC tissues and cell lines. The si-S100A16, pcDNA-S100A16, miR-6884-5p mimic or inhibitor was transfected into GC cells, and the effects of S100A16 and miR-6884-5p on the proliferation, invasion, and epithelial–mesenchymal transition (EMT) were explored by qRT-PCR and Western blot assays. Luciferase assays were performed to validate S100A16 as an miR-6884-5p target in GC cells. In our study, we found that the level of miR-6884-5p was significantly decreased and the expression of S100A16 was significantly increased in GC tissues and cell lines. There was a close association between these changes. Knockdown of S100A16 significantly inhibited the proliferation, invasion, and EMT of GC cells. The bioinformatics analysis predicted that S100A16 is a potential target gene of miR-6884-5p, and the luciferase reporter assay confirmed that miR-6884-5p could directly target S100A16. Introduction of miR-6884-5p to GC cells had similar effects to S100A16 silencing. Overexpression of S100A16 in GC cells partially reversed the inhibitory effects of the miR-6884-5p mimic. miR-6884-5p inhibited the proliferation, invasion, and EMT of GC cells by directly decreasing S100A16 expression.     

MicroRNA-490-5p靶向CDK1通过ERK信号通路参与胃癌细胞周期调控

目的:探讨miR-490-5p对胃癌细胞增殖与周期的调控作用和分子机制,以期为临床治疗胃癌提供新的有效靶点.方法:收集30例胃癌患者的胃癌组织及相应的癌旁组织标本;采用Real-time PCR法检测miR-490-5p和CDK1的表达水平;分析细胞周期相关蛋白 CDK1 与 miR-490-5p 的靶向关系.MTT法和流式细胞仪检测转染后胃癌细胞生长以及细胞周期情况.结果:与癌旁组织相比,胃癌组织中miR-490-5p的表达显著下调(P<0.001);转染 miR-490-5p mimics 的细胞中miR-490-5p的表达显著上调,而miR-490-5p inhibitors中miR-490-5p显著下降(均P<0.001);CDK1 是 miR-490-5p 的靶基因;下调miR-490-5p、上调CDK1能促进胃癌细胞的增殖能力及G1/S期的转化(均P<0.001).结论:通过上调miR-490-5p 可以抑制胃癌细胞的恶性增殖,减少CDK1表达,抑制 ERK信号途径,降低了G1/S期的转化速率,从而为胃癌诊断及治疗提供新靶标.     

miR-140-5p靶向HDAC7抑制非小细胞肺癌细胞增殖、迁移和侵袭的机制探讨

目的:探讨miR-140-5p靶向组蛋白去乙酰化酶7(histone deacetylase 7,HDAC7)调控非小细胞肺癌（non-small cell lung cancer,NSCLC）细胞增殖、迁移和侵袭的机制。方法:采用qRT-PCR检测人NSCLC组织及癌旁组织中miR-140-5p的表达水平。用miR-140-5p mimic（模拟物）及miR-140-5p NC（阴性对照）转染A549细胞,CCK8法及克隆形成实验检测细胞增殖能力,划痕实验和Transwell实验检测细胞迁移和侵袭能力,双荧光素酶报告基因实验验证miR-140-5p与HDAC7的靶向关系,Western blot检测各组细胞HDAC7及PI3K、p-PI3K、AKT、和p-AKT表达水平。结果:与癌旁组织相比,miR-140-5p在NSCLC组织中的表达水平明显减低,差异有统计学意义（P＜0.01）。与miR-140-5p NC组相比,过表达miR-140-5p后A549细胞在48和72 h的增殖能力明显降低（P＜0.05）;且细胞克隆形成、细胞迁移和侵袭能力均降低（均P＜0.05）,PI3K/AKT信号通路中关键分子p-PI3K和p-AKT蛋白水平明显降低（均P＜0.05)。生物信息学预测HDAC7可能是miR-140-5p的一个靶基因,且双荧光素酶报告结果证实miR-140-5p直接靶向调节HDAC7表达。结论:miR-140-5p通过靶向HDAC7表达进而抑制NSCLC A549细胞的增殖、迁移和侵袭,其机制可能与通过抑制PI3K/AKT信号通路的激活有关。     

LINC00312 inhibits the migration and invasion of bladder cancer cells by targeting miR-197-3p

To investigate the influence of the long non-coding RNA LINC00312 on bladder cancer (BC) cell invasion and metastasis by targeting miR-197-3p. BC and corresponding adjacent tissues were collected. LINC00312 and miR-197-3p were measured, and their correlation was detected through quantitative real-time PCR (qRT-PCR). BC cell line T24 was transfected and grouped (five groups) according to different transfection conditions. A scratch test was applied to analyze cell migration, and a Transwell assay was used to test cell invasion ability. Western blotting was to measure matrix metalloproteinase (MMP)-2, MMP-9, and the tissue inhibitor of metalloproteinase 2 (TIMP2) protein levels. qRT-PCR indicated that LINC00312 expression was lower but miR-197-3p expression was higher in BC tissues compared with adjacent tissues; LINC00312 was negatively correlated with miR-197-3p. The migration test revealed that the downregulation of miR-197-3p and overexpression of LINC00312 inhibited cell migration and invasion abilities, while the overexpression of miR-197-3p and the upregulation of LINC00312 promoted cell migration and invasion. BC cells with downregulated miR-197-3p or upregulated LINC00312 had low MMP-2 and MMP-9 levels but high TIMP2. LINC00312 inhibited BC cell invasion and metastasis through mediating miR-197-3p.     

miR-138-5p靶向调控RAB22A表达抑制胶质瘤细胞的增殖、迁移和侵袭

目的:探讨miR-138-5p对胶质瘤细胞增殖、迁移与侵袭的影响以及其作用机制。方法:U251细胞分为miR-NC组(对照组)、miR-mimics组、miR-inhibitor组以及miR-mimics+RAB22A-pcDNA3.1组。qRT-PCR检测miR-138-5p在胶质瘤细胞中的表达量;CCK8实验检测U251细胞的增殖能力;Transwell实验检测U251细胞的迁移和侵袭能力;Targetscan数据库预测miR-138-5p的下游靶基因;运用双荧光素酶报告基因实验验证细胞周期蛋白RAB22A是miR-138-5p的靶基因;RNA结合蛋白免疫沉淀实验进一步验证miR-138-5p与RAB22A之间的相互作用;运用蛋白免疫印迹实验检测组织和细胞中RAB22A的蛋白表达水平。结果:与正常人星形胶质细胞相比较,miR-138-5p 在胶质瘤细胞中表达量降低(P<0.05);CCK8和Transwell实验结果表明,在U251细胞中,过表达miR-138-5p能显著抑制细胞的增殖、迁移和侵袭能力(P＜0.05);运用Targetscan数据库预测miR-138-5p下游靶基因为RAB22A,miR-138-5p作用于RAB22A的3' UTR区域,双荧光素酶报告基因实验与蛋白免疫沉淀实验结果证实miR-138-5p与RAB22A之间的相互作用;RAB22A在胶质瘤细胞中明显高表达(P＜0.05),在U251细胞中过表达miR-138-5p明显抑制RAB22A的表达(P＜0.05)。结论:miR-138-5p在胶质瘤细胞中表达降低,miR-138-5p通过下调RAB22A表达而抑制细胞增殖、迁移和侵袭。     

LncRNA PVT1抑制miR-497-5p表达调控子宫内膜癌细胞增殖和迁移侵袭的分子机制研究

目的:研究长链非编码RNA PVT1和miR-497-5p在子宫内膜癌组织中的表达以及其对癌细胞增殖、迁移和侵袭的影响,并探讨其机制。方法:运用实时荧光定量法测定子宫内膜癌组织、癌旁正常组织及子宫内膜癌细胞HEC-1-B中PVT1和miR-497-5p的表达。用脂质体法将siRNA-PVT1和miR-497-5p mimic转染至子宫内膜癌细胞HEC-1-B;MTT法、Transwell法检测HEC-1-B细胞的增殖、迁移和侵袭。Targetscan在线分析网站预测和双荧光素酶报告基因实验验证LncRNA PVT1和miR-497-5p的靶向关系。将siRNA-PVT1和miR-497-5p inhibitor共转染至HEC-1-B细胞,MTT法、Transwell法检测HEC-1-B细胞的增殖、迁移和侵袭。结果:与癌旁正常组织相比,子宫内膜癌组织中PVT1表达显著上调,miR-497-5p表达显著下调（P<0.05）。沉默PVT1、过表达miR-497-5p均可抑制HEC-1-B细胞的增殖、迁移和侵袭（P<0.05）。PVT1靶向miR-497-5p。抑制miR-497-5p的表达可逆转沉默PVT1对HEC-1-B细胞增殖、迁移和侵袭的抑制作用。结论:沉默PVT1可抑制子宫内膜癌细胞增殖、迁移和侵袭,其机制可能与PVT1靶向miR-497-5p有关,将可为子宫内膜癌的靶向治疗提供新靶点。     

miR-106b-5p靶向调控细胞周期蛋白D1抑制结直肠癌细胞增殖、迁移与侵袭

目的:探讨miR-106b-5p对结直肠癌(colorectal cancer,CRC)细胞增殖、迁移与侵袭的影响以及其作用机制.方法:实时荧光定量PCR检测miR-106b-5p在CRC组织与相应的癌旁组织、永生化的肠上皮细胞以及肠癌细胞中的表达量;CCK8实验检测DLD1细胞增殖能力;细胞划痕实验检测DLD1细胞的...     

lncRNA MALAT1/miR-141-3p/ZEB1 分子轴调控胃癌SGC7901 细胞的侵袭、迁移及上皮间质转化

[摘要] 目的：探究lncRNA MALAT1/miR-141-3p/ZEB1 分子轴对胃癌（GC）SGC7901 细胞侵袭、迁移及上皮间质转化（EMT）的调控作用。方法：收集2014 年4 月至2017 年5 月武汉商职医院普外科手术切除的GC组织（非坏死部分）和配对癌旁组织（距肿瘤组织>5 cm）标本38 例,同时选取正常胃上皮细胞GES1 及GC细胞系SGC7901、HGC27、BGC823、MKN45 和MKN28。qPCR实验检测MALAT1、miR-141-3p 在GC组织和细胞系中的表达水平,CCK-8 和Transwell 实验检测敲降MALAT1 对SGC7901 细胞增殖、迁移和侵袭的影响,WB 实验检测ZEB1、E-cadherin、N-cadherin 和Vimentin 的表达情况。双荧光酶素报告基因验证MALAT1、miR-141-3p 和ZEB1 的靶向关系,CCK-8 和Transwell 实验检测MALAT1/miR-141-3p/ZEB1 分子轴对SGC7901 细胞生物学行为的影响。结果：MALAT1 在GC组织和细胞系中高表达（P<0.05 或P<0.01）。敲降MALAT1 显著抑制了SGC7901 细胞增殖、迁移、侵袭及EMT（P<0.05 或P<0.01）;MALAT1 与miR-141-3p、miR-141-3p 与ZEB1 均具有直接靶向关系;进一步研究表明,同时过表达miR-141-3p 和MALAT1 或ZEB1 能够逆转miR-141-3p 对SGC7901 细胞生物学行为的抑制作用。结论：MALAT1通过靶向下调miR-141-3p 对ZEB1 的抑制作用,进而促进SGC7901 细胞侵袭、迁移及EMT。