Chang Li

Cathepsin S: a double-edged protease in barrier damage, neuroimmune inflammation, and tissue repair, with implications for dermatology

Cathepsin S (CTSS) is a lysosomal cysteine protease traditionally recognized for its role in invariant-chain degradation and major histocompatibility complex class II antigen presentation. However, unlike many lysosomal cathepsins, CTSS remains active at neutral or mildly acidic pH, enabling proteolytic functions at th...