A Purpose-Synthesised Anti-Fibrotic Agent Attenuates Experimental Kidney Diseases in the Rat

作者：Gilbert Richard E^*; Zhang Yuan; Williams Spencer J; Zammit Steven C; Stapleton David I; Cox Alison J; Krum Henry; Langham Robyn; Kelly Darren J

来源：PLos One, 2012, 7(10): e47160.

DOI：10.1371/journal.pone.0047160

Background and Purpose: Locally-active growth factors have been implicated in the pathogenesis of many diseases in which organ fibrosis is a characteristic feature. In the setting of chronic kidney disease (CKD), two such pro-fibrotic factors, transforming growth factor-beta (TGF-beta) and platelet-derived growth factor (PDGF) have emerged as lead potential targets for intervention. Given the incomplete organ protection afforded by blocking the actions of TGF-beta or PDGF individually, we sought to determine whether an agent that inhibited the actions of both may have broader effects in ameliorating the key structural and functional abnormalities of CKD. %26lt;br%26gt;Experimental Approach: Accordingly, we studied the effects of a recently described, small molecule anti-fibrotic drug, 3-methoxy-4-propargyloxycinnamoyl anthranilate (FT011, Fibrotech Therapeutics, Australia), which should have these effects. %26lt;br%26gt;Key Results: In the in vitro setting, FT011 inhibited both TGF-beta 1 and PDGF-BB induced collagen production as well as PDGF-BB-mediated mesangial proliferation. Consistent with these in vitro actions, when studied in a robust model of non-diabetic kidney disease, the 5/6 nephrectomised rat, FT011 attenuated the decline in GFR, proteinuria and glomerulosclerosis (p%26lt;0.05 for all). Similarly, in the streptozotocin-diabetic Ren-2 rat, a model of advanced diabetic nephropathy, FT011 reduced albuminuria, glomerulosclerosis and tubulointerstitial fibrosis. %26lt;br%26gt;Conclusions and Implications: Together these studies suggest that broadly antagonising growth factor actions, including those of TGF-beta 1 and PDGF-BB, has the potential to protect the kidney from progressive injury in both the diabetic and nondiabetic settings. Citation: Gilbert RE, Zhang Y, Williams SJ, Zammit SC, Stapleton DI, et al. (2012) A Purpose-Synthesised Anti-Fibrotic Agent Attenuates Experimental Kidney Diseases in the Rat. PLoS ONE 7(10): e47160. doi: 10.1371/journal.pone.0047160

• 出版日期2012-10-10