Yang Fan, Xie Yi-Qiang, Tang Song-Qi, Wu Xian-Bo, Zhu Hai-Yan
College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine Tianjin 300193, Tianjin Province, P. R. China.
Department of Traditional Chinese Medicine, Hainan Medical University Haikou 571199, Hainan Province, P. R. China.
Int J Clin Exp Med. 2015 Sep 15;8(9):15308-12. eCollection 2015.
Colorectal cancer is one of the most commonly diagnosed cancers and a leading cause of death. Studies have shown that abnormal expression of microRNAs, small non-coding RNA molecules that regulate gene expression, is linked to the occurrence of cancer. This study sought to determine the role of microRNA-143 (miR-143) in colorectal cancer. Reduced levels of miR-143 expression were detected in colorectal cancer tissues compared to normal adjacent tissue. Transfection of artificially synthesized miR-143 mimics into SW-480 cells, a colorectal cancer cell line, resulted in increased levels of cell proliferation and apoptosis. Further, cells transfected with miR-143 mimics showed a reduction in the proportion of cells in S phase and an increase in the proportion of cells in G1 phase. The altered expression levels of miR-143 in colorectal cancer and its ability to affect the behavior of colorectal cancer cells suggest miR-143 could be used as a new target for the diagnosis and treatment of colorectal cancer.
结直肠癌是最常被诊断出的癌症之一,也是主要的死亡原因。研究表明,微小RNA(miRNA)是一类调控基因表达的小型非编码RNA分子,其异常表达与癌症的发生有关。本研究旨在确定微小RNA-143(miR-143)在结直肠癌中的作用。与相邻正常组织相比,在结直肠癌组织中检测到miR-143表达水平降低。将人工合成的miR-143模拟物转染到结直肠癌细胞系SW-480细胞中,导致细胞增殖和凋亡水平增加。此外,用miR-143模拟物转染的细胞显示S期细胞比例降低,G1期细胞比例增加。miR-143在结直肠癌中的表达水平改变及其影响结直肠癌细胞行为的能力表明,miR-143可作为结直肠癌诊断和治疗的新靶点。