Background:Stool-based molecular markers have shown potential as a strategy for colorectal cancer(CRC)screening.This study aimed to evaluate the feasibility of using microRNA-92a expression as a biomarker for CRC in s...Background:Stool-based molecular markers have shown potential as a strategy for colorectal cancer(CRC)screening.This study aimed to evaluate the feasibility of using microRNA-92a expression as a biomarker for CRC in stool samples.Methods:The level of microRNA-92a was measured in stool samples from 210 CRC patients,29 patients with advanced adenomas,15 patients with other cancers,and 101 healthy controls,using real-time quantitative polymerase chain reaction.Receiver operating characteristic curves were used to evaluate sensitivity and specificity.Results:MicroRNA-92a expression was positive in 70.1%of CRC patients,44.8%of advanced adenomas patients,and 36.6%of healthy controls,using a cut-off value of 31.5.The corresponding sensitivity and specificity for discriminating CRC from advanced adenomas were 66.9%and 63.4%,respectively.Moreover,stool-based microRNA-92a expression was better at detecting CRC cancers in the distal colon(sensitivity 82.1%)than the proximal colon(sensitivity 67.9%).There were no significant differences in clinical stage of CRC when comparing AUCs of each parameter(P>0.05).Conclusion:These findings suggest that microRNA-92a expression in stool samples could serve as a promising non-invasive biomarker for CRC detection.展开更多
目的:探讨结肠癌患者组织中microRNA-99a表达水平以及对结肠癌细胞增殖和迁移的影响。方法:取南京医科大学附属常州二院胃肠病中心49例结肠癌患者肿瘤组织、癌旁组织(癌旁5cm)标本以及结肠癌细胞HCT-116、HT-29、SW-480、Caco-2和正常...目的:探讨结肠癌患者组织中microRNA-99a表达水平以及对结肠癌细胞增殖和迁移的影响。方法:取南京医科大学附属常州二院胃肠病中心49例结肠癌患者肿瘤组织、癌旁组织(癌旁5cm)标本以及结肠癌细胞HCT-116、HT-29、SW-480、Caco-2和正常结肠上皮细胞HCoe Pic,采用实时荧光定量PCR检测结肠癌患者肿瘤组织和结肠癌细胞中microRNA-99a表达水平;结肠癌细胞株HT-29转染microRNA-99a抑制剂后,CCK-8法检测microRNA-99a对结肠癌细胞增殖的变化;transwell法观察microRNA-99a对结肠癌细胞迁移的影响;Western blotting检测了HT-29中FGFR-3的表达水平。结果:microRNA-99a表达在结肠癌组织中明显高于癌旁组织(6.27±0.48 vs 1.34±0.54,P<0.05)、在肿瘤细胞中明显高于正常结肠上皮细胞(5.48±0.34,7.67±0.24,5.78±0.22,6.28±0.44 vs 1.45±0.37,P<0.05)。转染microRNA-99a抑制剂后,HT-29细胞的增殖和迁移能力均明显下降(P<0.05);同时,HT-29中FGFR-3显著降低(P<0.05)。结论:microRNA-99a在结肠癌组织中高表达,低表达microRNA-99a可减弱结肠癌细胞的增殖和迁移能力,且可能通过FGFR-3信号通路发挥作用。展开更多
基金This study was supported by the National Natural Science Foundation of China(Grant No.82202907 to Rong-Bin Liu).
文摘Background:Stool-based molecular markers have shown potential as a strategy for colorectal cancer(CRC)screening.This study aimed to evaluate the feasibility of using microRNA-92a expression as a biomarker for CRC in stool samples.Methods:The level of microRNA-92a was measured in stool samples from 210 CRC patients,29 patients with advanced adenomas,15 patients with other cancers,and 101 healthy controls,using real-time quantitative polymerase chain reaction.Receiver operating characteristic curves were used to evaluate sensitivity and specificity.Results:MicroRNA-92a expression was positive in 70.1%of CRC patients,44.8%of advanced adenomas patients,and 36.6%of healthy controls,using a cut-off value of 31.5.The corresponding sensitivity and specificity for discriminating CRC from advanced adenomas were 66.9%and 63.4%,respectively.Moreover,stool-based microRNA-92a expression was better at detecting CRC cancers in the distal colon(sensitivity 82.1%)than the proximal colon(sensitivity 67.9%).There were no significant differences in clinical stage of CRC when comparing AUCs of each parameter(P>0.05).Conclusion:These findings suggest that microRNA-92a expression in stool samples could serve as a promising non-invasive biomarker for CRC detection.
文摘目的:探讨结肠癌患者组织中microRNA-99a表达水平以及对结肠癌细胞增殖和迁移的影响。方法:取南京医科大学附属常州二院胃肠病中心49例结肠癌患者肿瘤组织、癌旁组织(癌旁5cm)标本以及结肠癌细胞HCT-116、HT-29、SW-480、Caco-2和正常结肠上皮细胞HCoe Pic,采用实时荧光定量PCR检测结肠癌患者肿瘤组织和结肠癌细胞中microRNA-99a表达水平;结肠癌细胞株HT-29转染microRNA-99a抑制剂后,CCK-8法检测microRNA-99a对结肠癌细胞增殖的变化;transwell法观察microRNA-99a对结肠癌细胞迁移的影响;Western blotting检测了HT-29中FGFR-3的表达水平。结果:microRNA-99a表达在结肠癌组织中明显高于癌旁组织(6.27±0.48 vs 1.34±0.54,P<0.05)、在肿瘤细胞中明显高于正常结肠上皮细胞(5.48±0.34,7.67±0.24,5.78±0.22,6.28±0.44 vs 1.45±0.37,P<0.05)。转染microRNA-99a抑制剂后,HT-29细胞的增殖和迁移能力均明显下降(P<0.05);同时,HT-29中FGFR-3显著降低(P<0.05)。结论:microRNA-99a在结肠癌组织中高表达,低表达microRNA-99a可减弱结肠癌细胞的增殖和迁移能力,且可能通过FGFR-3信号通路发挥作用。
