
The study evaluated the association of Dipeptidyl‐peptidase 4 (DPP4, also known as CD26) with cellular senescence of human cartilage and knee osteoarthritis (OA) progression. DPP4 expression was associated with higher SA‐β‐gal, p16 expression, senescence‐related gene and catabolic gene (ADAMTS5, MMP13, IL6, and IL8) expression, higher SASPs secretion, and lower anabolic gene (COL2A1 and ACAN) expression in primary chondrocytes. SF DPP4 was associated with rOA progression, proteases (SF MMP‐1 and ‐3), aggrecan degradation (SF sGAG), indicators of activated macrophages (SF CD14 and CD163) and inflammation (SF IL‐6). The study identifies DPP4 as a key surface marker of senescent chondrocytes and a predictor of rOA progression.
Like
Save
Share