RNF2 regulates Wnt/ß-catenin signaling via TCF7L1 destabilization

The Wnt signaling pathway is a crucial regulator of various biological processes, such as development and cancer. The downstream transcription factors in this pathway play a vital role in determining the threshold for signaling induction and the length of the response, which vary depending on the bi...

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Bibliographic Details
Published in:Scientific reports 2023-11, Vol.13 (1), p.19750-19750, Article 19750
Main Authors: Koo, Youngmu, Han, Wonhee, Keum, Byeong-Rak, Lutz, Leila, Yun, Sung Ho, Kim, Gun-Hwa, Han, Jin-Kwan
Format: Article
Language:English
Subjects:
631/337
631/80/86
Catenin
Humanities and Social Sciences
multidisciplinary
Science
Science (multidisciplinary)
Signal transduction
Transcription factors
Ubiquitin-protein ligase
Ubiquitination
Wnt protein
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Summary:The Wnt signaling pathway is a crucial regulator of various biological processes, such as development and cancer. The downstream transcription factors in this pathway play a vital role in determining the threshold for signaling induction and the length of the response, which vary depending on the biological context. Among the four transcription factors involved in canonical Wnt/ß-catenin signaling, TCF7L1 is known to possess an inhibitory function; however, the underlying regulatory mechanism remains unclear. In this study, we identified the E3 ligase, RNF2, as a novel positive regulator of the Wnt pathway. Here, we demonstrate that RNF2 promotes the degradation of TCF7L1 through its ubiquitination upon activation of Wnt signaling. Loss-of-function studies have shown that RNF2 consistently destabilizes nuclear TCF7L1 and is required for proper Wnt target gene transcription in response to Wnt activation. Furthermore, our results revealed that RNF2 controls the threshold, persistence, and termination of Wnt signaling by regulating TCF7L1. Overall, our study sheds light on the previously unknown degradation mechanism of TCF7L1 by a specific E3 ligase, RNF2, and provides new insights into the variability in cellular responses to Wnt activation.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-47111-x