基质金属蛋白酶
伤口愈合
酶
化学
医学
生物化学
外科
作者
Zhihong Peng,Trung T. Nguyen,Man Wang,Bowen Anderson,Mohini Mohan Konai,Valerie A. Schroeder,William R. Wolter,Toni Page-Mayberry,Charles E. Peterson,Shahriar Mobashery,Mayland Chang
标识
DOI:10.1021/acschembio.2c00382
摘要
Pressure ulcers (PUs) are chronic wounds that lead to amputations and death. Little is known about why PUs are recalcitrant to healing. Wound healing is mediated by matrix metalloproteinases (MMPs). The 24 MMPs in humans each exist in three forms, of which only one is catalytically competent. We analyzed human PU samples using an affinity resin that exclusively binds to the catalytically competent MMPs. We identified by mass spectrometry the active forms of MMP-1, MMP-8, MMP-9, and MMP-14. Concentrations of MMP-8, MMP-9, and MMP-14 were higher in human PUs compared to the healthy tissue, whereas those for MMP-1 did not change. Decreasing levels of active MMP-9 as the PU improved argued for a detrimental role for this enzyme. In a mouse model of PUs, a highly selective inhibitor for MMP-9 and MMP-14, (R)-ND-336, accelerated wound closure in parallel with significant amelioration of ulcer stage. (R)-ND-336 holds promise as a first-in-class treatment for PUs.
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