Article
作者: Gottardo, Raphaël ; Engstrom, Ian A ; Kluesner, Mitchell G ; Shabaneh, Tamer B ; Stull, Sylvia M ; Muthuraman, Pranav V ; Jaeger-Ruckstuhl, Carla A ; Olson, James M ; Waltner, Olivia G ; Correnti, Colin E ; Lo, Yun ; Bhise, Shruti S ; Price, Jason P ; Morrish, Fionnuala ; Simon, Sylvain ; Henikoff, Steven ; Muhunthan, Vishaka ; Fulton, Elena ; Furlan, Scott N ; Bugos, Grace ; Sarthy, Jay F ; Sullivan, Lucas B ; Newsom, Oliver J ; Stevens, Andrew R ; Riddell, Stanley R ; Voillet, Valentin ; Ruff, Raymond ; Kanaan, Sami B ; Peralta, Jobelle M C
The interaction of the tumor necrosis factor receptor (TNFR) family member CD27 on naive CD8+ T (Tn) cells with homotrimeric CD70 on antigen-presenting cells (APCs) is necessary for T cell memory fate determination. Here, we examined CD27 signaling during Tn cell activation and differentiation. In conjunction with T cell receptor (TCR) stimulation, ligation of CD27 by a synthetic trimeric CD70 ligand triggered CD27 internalization and degradation, suggesting active regulation of this signaling axis. Internalized CD27 recruited the signaling adaptor TRAF2 and the phosphatase SHP-1, thereby modulating TCR and CD28 signals. CD27-mediated modulation of TCR signals promoted transcription factor circuits that induced memory rather than effector associated gene programs, which are induced by CD28 costimulation. CD27-costimulated chimeric antigen receptor (CAR)-engineered T cells exhibited improved tumor control compared with CD28-costimulated CAR-T cells. Thus, CD27 signaling during Tn cell activation promotes memory properties with relevance to T cell immunotherapy.