Bioactive Materials (Mar 2024)

Rationally designed approaches to augment CAR-T therapy for solid tumor treatment

  • Chaojie Zhu,
  • Qing Wu,
  • Tao Sheng,
  • Jiaqi Shi,
  • Xinyuan Shen,
  • Jicheng Yu,
  • Yang Du,
  • Jie Sun,
  • Tingxizi Liang,
  • Kaixin He,
  • Yuan Ding,
  • Hongjun Li,
  • Zhen Gu,
  • Weilin Wang

Journal volume & issue
Vol. 33
pp. 377 – 395

Abstract

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Chimeric antigen receptor T cell denoted as CAR-T therapy has realized incredible therapeutic advancements for B cell malignancy treatment. However, its therapeutic validity has yet to be successfully achieved in solid tumors. Different from hematological cancers, solid tumors are characterized by dysregulated blood vessels, dense extracellular matrix, and filled with immunosuppressive signals, which together result in CAR-T cells’ insufficient infiltration and rapid dysfunction. The insufficient recognition of tumor cells and tumor heterogeneity eventually causes cancer reoccurrences. In addition, CAR-T therapy also raises safety concerns, including potential cytokine release storm, on-target/off-tumor toxicities, and neuro-system side effects. Here we comprehensively review various targeting aspects, including CAR-T cell design, tumor modulation, and delivery strategy. We believe it is essential to rationally design a combinatory CAR-T therapy via constructing optimized CAR-T cells, directly manipulating tumor tissue microenvironments, and selecting the most suitable delivery strategy to achieve the optimal outcome in both safety and efficacy.

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