SESN2 maintains cartilage homeostasis by SREBP1-mediated lipid metabolism during osteoarthritis progression.

ABSTRACT: Chondrocytes experience adverse lipid metabolism disorders during the degeneration of cartilage in osteoarthritis (OA), while the underlying mechanisms remain poorly understood. Sestrin2 (SESN2), a highly conserved stress-inducible protein, plays a crucial role in regulating lipid metabolism. This study aimed to investigate the role of SESN2 in the regulation of fatty acid metabolism in chondrocytes and elucidate the underlying molecular mechanisms in OA. The expression of SESN2 was significantly decreased in OA-affected human cartilage, and this decrease correlated with the upregulation of lipogenic enzymes. Sesn2 inhibited lipogenic enzyme expression in chondrocytes and improved cartilage homeostasis. Mechanistically, SESN2 inhibited the expression of sterol regulatory element-binding tr

SUBMITTER: Liu Z 

PROVIDER: S-EPMC12356327 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature