Fate Therapeutics(US:FATE) 生物世界·2025-06-05 03:43Core Viewpoint - The article discusses the advancements in CAR-T cell therapy, particularly focusing on a new iPSC-derived CAR-T cell targeting HER2, which aims to overcome challenges in treating solid tumors [2][3]. Group 1: Research Development - Fate Therapeutics developed an iPSC-derived CAR-T cell that preferentially targets HER2-positive tumors, addressing multiple barriers to efficacy in solid tumors through gene editing and engineering modifications [2][3]. - The CAR-T cells are designed to distinguish between tumor cells and normal cells, detecting truncated and misfolded HER2, while also knocking out genes that cause immune rejection and T cell exhaustion [3][4]. Group 2: Mechanisms and Enhancements - The CAR-T cells have been engineered to express IL-7R fusion protein for enhanced persistence, TGF-β-IL-18R to resist immunosuppressive tumor microenvironments, and CXCR2 to promote specific migration to solid tumor tissues [4][5]. - The study highlights the CAR's ability to differentiate between tumor and normal cells, and the engineered cells exhibit improved persistence and migration capabilities, along with resistance to TGF-β mediated suppression [5]. Group 3: Results and Implications - The iPSC-derived HER2-targeting CAR-T cells demonstrated strong anti-tumor activity in both in vitro and in vivo environments, with limited cytolytic activity against HER2-positive normal cells [3][5]. - The combination of CAR and high-affinity, non-cleavable CD16a Fc receptor allows for comprehensive multi-antigen targeting, enhancing therapeutic potential [3][5].