Current Advances and Challenges in CAR-T Therapy for Hematological and Solid Tumors

Abstract

Introduction: Chimeric antigen receptor (CAR) T-cell therapy has revolutionized the treatment of refractory hematological malignancies, yet significant challenges persist in extending its success to solid tumors. This review aims to provide a comprehensive overview of the current landscape and future perspectives of CAR-T therapy in both hematological malignancies and solid tumors. Methods: A thorough literature search was conducted to identify relevant preclinical and clinical studies, as well as review articles, focusing on CAR-T therapy in various hematological malignancies and solid tumors. The collected information was synthesized to discuss the current applications, challenges, and strategies for improving CAR-T therapy in these settings. Results: CAR-T therapy has demonstrated impressive clinical outcomes in treating certain hematological malignancies, such as B-cell lymphoma, leukemia, and multiple myeloma. However, the efficacy of CAR-T cells in solid tumors has been limited due to various obstacles, including tumor heterogeneity, immunosuppressive microenvironment, and off-tumor toxicities. Strategies to overcome these challenges involve advanced CAR designs, combination therapies, and novel approaches to CAR-T cell manufacturing and engineering. Conclusion: While CAR-T therapy has revolutionized the treatment of some hematological malignancies, significant hurdles remain in extending its success to solid tumors. Continued research efforts focusing on improving CAR-T cell efficacy, safety, and accessibility will be crucial in unlocking the full potential of this innovative immunotherapeutic approach across a broad spectrum of cancer types.