作者:Yong Zhang、Yufen Zhao、Andrew J. Tebben、Steven Sheriff、Max Ruzanov、Mark P. Fereshteh、Yi Fan、Jonathan Lippy、Jesse Swanson、Ching-Ping Ho、Barri S. Wautlet、Anne Rose、Karen Parrish、Zheng Yang、Andrew F. Donnell、Liping Zhang、Brian E. Fink、Gregory D. Vite、Karen Augustine-Rauch、Joseph Fargnoli、Robert M. Borzilleri                                    
                                    
                                        DOI:10.1021/acsmedchemlett.8b00357
                                    
                                    
                                        日期:2018.11.8
                                    
                                    The multifunctional cytokine TGF beta plays a central role in regulating antitumor immunity. It has been postulated that inhibition of TGF beta signaling in concert with checkpoint blockade will provide improved and durable immune response against tumors. Herein, we describe a novel series of 4-azaindole TGF beta receptor kinase inhibitors with excellent selectivity for TGF beta receptor 1 kinase. The combination of compound 3f and an antimouse-PD-1 antibody demonstrated significantly improved antitumor efficacy compared to either treatment alone in a murine tumor model.