procollagen

2,4-DPD is competitive inhibitor of the oxygen-sensing enzyme HIF-α prolyl hydroxylase (HIF-PH)

Arginase inhibitor9 (Compound 12a) is a type of arginase enzyme inhibitor with IC50 values of 9 μM for bovine and 55 μM for human arginase I. It also exhibits antioxidant activity by scavenging free radicals. Moreover, Arginase inhibitor9 effectively regulates collagen and procollagen levels, thereby exerting an anti-fibrotic effect.

Dealanylalahopcin is a procollagen prolyl-4-hydroxylase inhibitor.

UK-383367 is a procollagen C-proteinase inhibitor with IC50 of 44 nM, has excellent selectivity over MMPs.

3,5,6,7,8,3',4'-Heptemthoxyflavone exhibits neuroprotective, chemopreventive, anti-allergic, anti-inflammatory, immunomodulatory, anti-aging, and photoprotective effects; it inhibits collagenase activity, induces type I procollagen synthesis in HDFn cells, and combats nitric oxide (NO) carcinogenesis.

Exserohilone ((-)-Exserohilone), a thiodiketopiperazine derivative, inhibits TNF-α-induced ROS generation and MMP-1 secretion, while increasing procollagen type I α1 secretion in human dermal fibroblasts [1].