RRC ID 49217
Author Taniue K, Kurimoto A, Takeda Y, Nagashima T, Okada-Hatakeyama M, Katou Y, Shirahige K, Akiyama T.
Title ASBEL-TCF3 complex is required for the tumorigenicity of colorectal cancer cells.
Journal Proc. Natl. Acad. Sci. U.S.A.
Abstract Wnt/β-catenin signaling plays a key role in the tumorigenicity of colon cancer. Furthermore, it has been reported that lncRNAs are dysregulated in several steps of cancer development. Here we show that β-catenin directly activates the transcription of the long noncoding RNA (lncRNA) ASBEL [antisense ncRNA in the ANA (Abundant in neuroepithelium area)/BTG3 (B-cell translocation gene 3) locus] and transcription factor 3 (TCF3), both of which are required for the survival and tumorigenicity of colorectal cancer cells. ASBEL interacts with and recruits TCF3 to the activating transcription factor 3 (ATF3) locus, where it represses the expression of ATF3. Furthermore, we demonstrate that ASBEL-TCF3-mediated down-regulation of ATF3 expression is required for the proliferation and tumorigenicity of colon tumor cells. ATF3, in turn, represses the expression of ASBEL Our results reveal a pathway involving an lncRNA and two transcription factors that plays a key role in Wnt/β-catenin-mediated tumorigenesis. These results may provide insights into the variety of biological and pathological processes regulated by Wnt/β-catenin signaling.
Volume 113(45)
Pages 12739-12744
Published 2016-11-8
DOI 10.1073/pnas.1605938113
PII 1605938113
PMID 27791078
PMC PMC5111701
IF 9.504
Resource
DNA material CS-RfA-CG (RDB04390) pCAG-HIVgp (RDB04394) pCMV-VSV-G-RSV-Rev (RDB04393)