Augmented ERAD (ER-associated degradation) activity in chondrocytes is necessary for cartilage development and maintenance
Endoplasmic-reticulum-associated protein degradation
Chondrogenesis
DOI:
10.1126/sciadv.abl4222
Publication Date:
2022-01-21T19:00:23Z
AUTHORS (13)
ABSTRACT
Chondrocytes secrete massive extracellular matrix (ECM) molecules that are produced, folded, and modified in the endoplasmic reticulum (ER). Thus, ER-associated degradation (ERAD) complex-which removes misfolded unfolded proteins to maintain proteostasis ER- plays an indispensable role building maintaining cartilage. Here, we examined necessity of ERAD complex chondrocytes for cartilage formation maintenance. We show gene expression is exponentially increased during chondrogenesis, disruption function causes severe chondrodysplasia developing embryos loss adult articular malfunction also abnormal accumulation ECM subsequent chondrodysplasia. decreased damaged from patients with osteoarthritis (OA), leads destruction a mouse OA model.
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