胶质母细胞瘤
受体
转化生长因子
抗性(生态学)
细胞生物学
癌症研究
化学
生物
遗传学
生态学
作者
Nannan Li,Jesse L. Rodriguez,Yibo Yin,Meghan Logun,Logan Zhang,Shengkun Yu,Kelly Hicks,Vicky Zhang,Laura Zhang,Chuncheng Xie,Jiabin Wang,Joseph A. Fraietta,Zev A. Binder,Zhiguo Lin,Donald M. O’Rourke
标识
DOI:10.1101/2024.02.26.582107
摘要
ABSTRACT Chimeric antigen receptor (CAR) T cells have shown significant efficacy in hematological diseases. However, CAR T therapy has demonstrated limited efficacy in solid tumors, including glioblastoma (GBM). One of the most important reasons is the immunosuppressive tumor microenvironment (TME), which promotes tumor growth and suppresses immune cells to eliminate tumor cells. The human transforming growth factor-beta (TGF-β) plays a crucial role in forming the suppressive GBM TME and driving the suppression of the anti-GBM response. In order to mitigate TGF-β mediated suppressive activity, we combined a dominant-negative TGF-β receptor II (dnTGFβRII) with our previous bicistronic CART-EGFR-IL13Rα2 construct, currently being evaluated in a clinical trial, to generate CART-EGFR-IL13Rα2-dnTGFβRII, a tri-modular construct we are developing for clinical application. We hypothesized that this approach would more effectively subvert resistance mechanisms observed with GBM. Our data suggests that CART-EGFR-IL13Rα2-dnTGFβRII significantly augmented T cell proliferation and enhanced functional responses, particularly in a TGFβ-rich tumor environment. Additionally, in vivo studies validated the safety and efficacy of the dnTGFβRII cooperating with CARs in targeting and eradicating GBM in a NSG mouse model.
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