BACKGROUND Through experimental research on the biological function of GATA6-AS1,it was confirmed that GATA6-AS1 can inhibit the proliferation,invasion,and migration of gastric cancer cells,suggesting that GATA6-AS1 p...BACKGROUND Through experimental research on the biological function of GATA6-AS1,it was confirmed that GATA6-AS1 can inhibit the proliferation,invasion,and migration of gastric cancer cells,suggesting that GATA6-AS1 plays a role as an anti-oncogene in the occurrence and development of gastric cancer.Further experi-ments confirmed that the overexpression of fat mass and obesity-associated protein(FTO)inhibited the expression of GATA6-AS1,thereby promoting the occurrence and development of gastric cancer.AIM To investigate the effects of GATA6-AS1 on the proliferation,invasion and migration of gastric cancer cells and its mechanism of action.METHODS We used bioinformatics methods to analyze the Cancer Genome Atlas(https://portal.gdc.cancer.gov/.The Cancer Genome Atlas)and download expression data for GATA6-AS1 in gastric cancer tissue and normal tissue.We also constructed a GATA6-AS1 lentivirus overexpression vector which was transfected into gastric cancer cells to investigate its effects on proliferation,migration and invasion,and thereby clarify the expression of GATA6-AS1 in gastric cancer and its biological role in the genesis and development of gastric cancer.Next,we used a database(http://starbase.sysu.edu.cn/starbase2/)to analysis GATA6-AS1 whether by m6A methylation modify regulation and predict the methyltransferases that may methylate GATA6-AS1.Furthermore,RNA immunoprecipitation experiments confirmed that GATA6-AS1 was able to bind to the m6A methylation modification enzyme.These data allowed us to clarify the ability of m6A methylase to influence the action of GATA6-AS1 and its role in the occurrence and development of gastric cancer.RESULTS Low expression levels of GATA6-AS1 were detected in gastric cancer.We also determined the effects of GATA6-AS1 overexpression on the biological function of gastric cancer cells.GATA6-AS1 had strong binding ability with the m6A demethylase FTO,which was expressed at high levels in gastric cancer and negatively correlated with the expression of GATA6-AS1.Following transfection with siRNA to knock down the expression of FTO,the expression levels of GATA6-AS1 were up-regulated.Finally,the proliferation,migration and invasion of gastric cancer cells were all inhibited following the knockdown of FTO expression.CONCLUSION During the occurrence and development of gastric cancer,the overexpression of FTO may inhibit the expression of GATA6-AS1,thus promoting the proliferation and metastasis of gastric cancer.展开更多
目的：探究锌指转录因子G ATA 6在胰岛素瘤中的表达及与胰岛素瘤细胞增殖和凋亡的关系。方法收集2009年1月至2014年9月于上海交通大学附属第六人民医院确诊的3例胰岛素瘤患者的瘤体及其相应瘤旁组织，应用蛋白印迹法（Western blotting...目的：探究锌指转录因子G ATA 6在胰岛素瘤中的表达及与胰岛素瘤细胞增殖和凋亡的关系。方法收集2009年1月至2014年9月于上海交通大学附属第六人民医院确诊的3例胰岛素瘤患者的瘤体及其相应瘤旁组织，应用蛋白印迹法（Western blotting）检测GATA6在胰岛素瘤瘤体及瘤旁的表达差异。另外收集正常胰腺组织标本2例，免疫荧光法观察GATA6在胰岛素瘤组织及正常胰腺组织中的表达及定位。培养小鼠胰岛素瘤细胞系MIN6细胞，小干扰RNA（siRNA）干扰GATA6表达后，用流式细胞仪观察细胞凋亡及细胞周期的变化。结果胰岛素瘤瘤体组织GATA6表达水平较瘤旁组织异常升高（P＜0.05）；免疫荧光法显示胰岛素瘤正常胰岛结构丧失，GATA6主要位于胰岛素瘤细胞的细胞核中，在胰岛素瘤中大量表达，在正常胰岛β细胞中少量表达。沉默G ATA 6表达后胰岛素瘤细胞凋亡显著增加（P＜0.05），且细胞增殖受抑制（P＜0.05）。结论 GATA6在胰岛素瘤中异常高表达，与胰岛素瘤细胞增殖凋亡关系密切，提示G ATA 6可能在胰岛素瘤的发病机制中起重要的作用。展开更多
目的:通过研究中国汉族法洛四联症(tetralogy of Fallot,TOF)患儿心肌中GATA6、TBX20基因的表达变化,初步探讨GATA6、TBX20基因与汉族TOF分子发病机制之间的关系。方法:实验组选取中国汉族TOF患儿15例,年龄6.5个月～8岁,平均1.9岁,术中...目的:通过研究中国汉族法洛四联症(tetralogy of Fallot,TOF)患儿心肌中GATA6、TBX20基因的表达变化,初步探讨GATA6、TBX20基因与汉族TOF分子发病机制之间的关系。方法:实验组选取中国汉族TOF患儿15例,年龄6.5个月～8岁,平均1.9岁,术中常规切除并留取右心室流出道肥厚心肌;对照组选取汉族室间隔缺损患儿15例,年龄4.5个月～5岁,平均2.2岁。术中留取患儿右心房壁少量心肌组织。提取心肌组织RNA,应用实时荧光聚合酶链反应检测两组心肌中的GATA6、TBX20基因mRNA表达;应用免疫组化染色技术,检测两组心肌中的GATA6、TBX20蛋白的表达并进行统计学比较分析。结果:TOF患者心肌中GATA6、TBX20基因mRNA和蛋白表达水平均较对照组显著降低,差异有统计学意义;同时,TOF患儿心肌TBX20mRNA水平与患儿肺动脉指数呈正相关(r=0.6782,P<0.05)。结论:人类心肌中存在GATA6、TBX20mRNA和蛋白的表达;在中国汉族人群中,TOF的发生可能与心肌组织中GATA6、TBX20基因表达下调有关。展开更多
基金Natural Science Foundation of Shandong Province,No.ZR2020MH207 and No.ZR2020MH251.
文摘BACKGROUND Through experimental research on the biological function of GATA6-AS1,it was confirmed that GATA6-AS1 can inhibit the proliferation,invasion,and migration of gastric cancer cells,suggesting that GATA6-AS1 plays a role as an anti-oncogene in the occurrence and development of gastric cancer.Further experi-ments confirmed that the overexpression of fat mass and obesity-associated protein(FTO)inhibited the expression of GATA6-AS1,thereby promoting the occurrence and development of gastric cancer.AIM To investigate the effects of GATA6-AS1 on the proliferation,invasion and migration of gastric cancer cells and its mechanism of action.METHODS We used bioinformatics methods to analyze the Cancer Genome Atlas(https://portal.gdc.cancer.gov/.The Cancer Genome Atlas)and download expression data for GATA6-AS1 in gastric cancer tissue and normal tissue.We also constructed a GATA6-AS1 lentivirus overexpression vector which was transfected into gastric cancer cells to investigate its effects on proliferation,migration and invasion,and thereby clarify the expression of GATA6-AS1 in gastric cancer and its biological role in the genesis and development of gastric cancer.Next,we used a database(http://starbase.sysu.edu.cn/starbase2/)to analysis GATA6-AS1 whether by m6A methylation modify regulation and predict the methyltransferases that may methylate GATA6-AS1.Furthermore,RNA immunoprecipitation experiments confirmed that GATA6-AS1 was able to bind to the m6A methylation modification enzyme.These data allowed us to clarify the ability of m6A methylase to influence the action of GATA6-AS1 and its role in the occurrence and development of gastric cancer.RESULTS Low expression levels of GATA6-AS1 were detected in gastric cancer.We also determined the effects of GATA6-AS1 overexpression on the biological function of gastric cancer cells.GATA6-AS1 had strong binding ability with the m6A demethylase FTO,which was expressed at high levels in gastric cancer and negatively correlated with the expression of GATA6-AS1.Following transfection with siRNA to knock down the expression of FTO,the expression levels of GATA6-AS1 were up-regulated.Finally,the proliferation,migration and invasion of gastric cancer cells were all inhibited following the knockdown of FTO expression.CONCLUSION During the occurrence and development of gastric cancer,the overexpression of FTO may inhibit the expression of GATA6-AS1,thus promoting the proliferation and metastasis of gastric cancer.
文摘目的：探究锌指转录因子G ATA 6在胰岛素瘤中的表达及与胰岛素瘤细胞增殖和凋亡的关系。方法收集2009年1月至2014年9月于上海交通大学附属第六人民医院确诊的3例胰岛素瘤患者的瘤体及其相应瘤旁组织，应用蛋白印迹法（Western blotting）检测GATA6在胰岛素瘤瘤体及瘤旁的表达差异。另外收集正常胰腺组织标本2例，免疫荧光法观察GATA6在胰岛素瘤组织及正常胰腺组织中的表达及定位。培养小鼠胰岛素瘤细胞系MIN6细胞，小干扰RNA（siRNA）干扰GATA6表达后，用流式细胞仪观察细胞凋亡及细胞周期的变化。结果胰岛素瘤瘤体组织GATA6表达水平较瘤旁组织异常升高（P＜0.05）；免疫荧光法显示胰岛素瘤正常胰岛结构丧失，GATA6主要位于胰岛素瘤细胞的细胞核中，在胰岛素瘤中大量表达，在正常胰岛β细胞中少量表达。沉默G ATA 6表达后胰岛素瘤细胞凋亡显著增加（P＜0.05），且细胞增殖受抑制（P＜0.05）。结论 GATA6在胰岛素瘤中异常高表达，与胰岛素瘤细胞增殖凋亡关系密切，提示G ATA 6可能在胰岛素瘤的发病机制中起重要的作用。
文摘目的:通过研究中国汉族法洛四联症(tetralogy of Fallot,TOF)患儿心肌中GATA6、TBX20基因的表达变化,初步探讨GATA6、TBX20基因与汉族TOF分子发病机制之间的关系。方法:实验组选取中国汉族TOF患儿15例,年龄6.5个月～8岁,平均1.9岁,术中常规切除并留取右心室流出道肥厚心肌;对照组选取汉族室间隔缺损患儿15例,年龄4.5个月～5岁,平均2.2岁。术中留取患儿右心房壁少量心肌组织。提取心肌组织RNA,应用实时荧光聚合酶链反应检测两组心肌中的GATA6、TBX20基因mRNA表达;应用免疫组化染色技术,检测两组心肌中的GATA6、TBX20蛋白的表达并进行统计学比较分析。结果:TOF患者心肌中GATA6、TBX20基因mRNA和蛋白表达水平均较对照组显著降低,差异有统计学意义;同时,TOF患儿心肌TBX20mRNA水平与患儿肺动脉指数呈正相关(r=0.6782,P<0.05)。结论:人类心肌中存在GATA6、TBX20mRNA和蛋白的表达;在中国汉族人群中,TOF的发生可能与心肌组织中GATA6、TBX20基因表达下调有关。
