Danxiu Li, Xin Wang, Hui Miao, Hao Liu, Maogui Pang, Hao Guo, Minghui Ge, Sarah E Glass, Stephan Emmrich, Songtao Ji, Yun Zhou, Xiaoni Ye, Huajie Mao, Jing Wang, Qi Liu, Taewan Kim, Jan-Henning Klusmann, Cunxi Li, Zhenxiong Liu, Haifeng Jin, Yongzhan Nie, Kaichun Wu, Daiming Fan, Xu Song, Xin Wang, Ling Li, Yuanyuan Lu, Xiaodi Zhao
Alternative splicing regulates gene expression and functional diversity and is often dysregulated in human cancers. Here, we discovered that the long noncoding RNA (lncRNA) MIR99AHG regulated alternative splicing to alter the activity of a chromatin remodeler and promote metastatic behaviors in colorectal cancer (CRC). MIR99AHG was abundant in invasive CRC cells and metastatic tumors from patients and promoted motility and invasion in cultured CRC cells. MIR99AHG bound to and stabilized the RNA splicing factor PTBP1, and this complex increased cassette exon inclusion in the mRNA encoding the chromatin remodeling gene SMARCA1 ...
September 19, 2023: Science Signaling