Aldehydes alter TGF-β signaling and induce obesity and cancer
Document Type
Journal Article
Publication Date
8-31-2024
Journal
Cell reports
Volume
43
Issue
9
DOI
10.1016/j.celrep.2024.114676
Keywords
ALDH2; CP: Cancer; CP: Metabolism; HCC; MASH; SMAD3; SPTBN1; TGF-β; cancer; liver disease; metabolic syndrome; reactive aldehydes
Abstract
Obesity and fatty liver diseases-metabolic dysfunction-associated steatotic liver disease (MASLD) and metabolic dysfunction-associated steatohepatitis (MASH)-affect over one-third of the global population and are exacerbated in individuals with reduced functional aldehyde dehydrogenase 2 (ALDH2), observed in approximately 560 million people. Current treatment to prevent disease progression to cancer remains inadequate, requiring innovative approaches. We observe that Aldh2 and Aldh2Sptbn1 mice develop phenotypes of human metabolic syndrome (MetS) and MASH with accumulation of endogenous aldehydes such as 4-hydroxynonenal (4-HNE). Mechanistic studies demonstrate aberrant transforming growth factor β (TGF-β) signaling through 4-HNE modification of the SMAD3 adaptor SPTBN1 (β2-spectrin) to pro-fibrotic and pro-oncogenic phenotypes, which is restored to normal SMAD3 signaling by targeting SPTBN1 with small interfering RNA (siRNA). Significantly, therapeutic inhibition of SPTBN1 blocks MASH and fibrosis in a human model and, additionally, improves glucose handling in Aldh2 and Aldh2Sptbn1 mice. This study identifies SPTBN1 as a critical regulator of the functional phenotype of toxic aldehyde-induced MASH and a potential therapeutic target.
APA Citation
Yang, Xiaochun; Bhowmick, Krishanu; Rao, Shuyun; Xiang, Xiyan; Ohshiro, Kazufumi; Amdur, Richard L.; Hassan, Md Imtaiyaz; Mohammad, Taj; Crandall, Keith; Cifani, Paolo; Shetty, Kirti; Lyons, Scott K.; Merrill, Joseph R.; Vegesna, Anil K.; John, Sahara; Latham, Patricia S.; Crawford, James M.; Mishra, Bibhuti; Dasarathy, Srinivasan; Wang, Xin Wei; Yu, Herbert; Wang, Zhanwei; Huang, Hai; Krainer, Adrian R.; and Mishra, Lopa, "Aldehydes alter TGF-β signaling and induce obesity and cancer" (2024). GW Authored Works. Paper 5407.
https://hsrc.himmelfarb.gwu.edu/gwhpubs/5407
Department
Surgery