PERK Inhibition Mitigates Restenosis and Thrombosis: A Potential Low-Thrombogenic Antirestenotic Paradigm

JACC Basic Transl Sci. 2020 Feb 19;5(3):245-263. doi: 10.1016/j.jacbts.2019.12.005. eCollection 2020 Mar.

Abstract

Developing endothelial-protective, nonthrombogenic antirestenotic treatments has been a challenge. A major hurdle to this has been the identification of a common molecular target in both smooth muscle cells and endothelial cells, inhibition of which blocks dysfunction of both cell types. The authors' findings suggest that the PERK kinase could be such a target. Importantly, PERK inhibition mitigated both restenosis and thrombosis in preclinical models, implicating a low-thrombogenic antirestenotic paradigm.

Keywords: ATF, activating transcription factor; Ad, adenovirus; CHOP, CCAAT-enhancer-binding protein homologous protein; DES, drug-eluting stents; DMSO, dimethyl sulfoxide; EC, endothelial cell; ER, endoplasmic reticulum; FBS, fetal bovine serum; GFP, green fluorescent protein; HA, hemagglutinin; I/M, intima to media; IEL, internal elastic lamina; IH, intimal hyperplasia; IRE1, inositol-requiring kinase 1; MRTF-A, myocardin related transcription factor A; PDGF, platelet-derived growth factor; PDGF-BB, platelet-derived growth factor with 2 B subunits; PERK; PERK, protein kinase RNA-like endoplasmic reticulum kinase; SMA, smooth muscle actin; SMC, smooth muscle cell; SRF, serum response factor; STAT3, signal transducer and activator of transcription 3; TNF, tumor necrosis factor; eIF2, eukaryotic translation initiation factor 2; endothelial cells; restenosis; siRNA, small interfering ribonucleic acid; smooth muscle cells; thrombosis.