McCaw Tyler R, Restifo Nicholas P, Plath Kathrin, Crompton Joseph G
Division of Surgical Oncology, University of California Los Angeles, Los Angeles, CA 90095, USA.
Broad Stem Cell Research Center at UCLA, University of California Los Angeles, Los Angeles, CA 90095, USA.
Cancers (Basel). 2025 Jul 2;17(13):2225. doi: 10.3390/cancers17132225.
Cell-based immunotherapy is a promising treatment strategy for cancer. Particularly in the case of solid tumors, however, this strategy only benefits a minority of patients. A critical limitation to immunotherapy is T cell exhaustion, a terminal differentiation state characterized by loss of self-renewal and cytotoxic capacity. For over a decade, regenerative immunology approaches to overcome exhaustion and restore stem-like features of T cells have been pursued. The reprogramming of tumor-specific T cells back to a less-differentiated, stem-like state using induced pluripotent stem cell (iPSC) technology has been viewed as a powerful and highly appealing strategy to overcome the limitations imposed by exhaustion. However, clinical translation of these approaches has been stymied by the requirement for subsequent iPSC-to-T cell re-maturation strategies, vanishingly low efficiencies, and resource-intensive cell culture protocols. In this review, we discuss the emergence of transcription factor reprogramming to iPSCs, contemporary techniques for T cell reprogramming, as well as techniques for re-differentiation into mature T cells. We discuss the potential clinical utility of T cell reprogramming and re-maturation strategies alongside progress and major roadblocks toward clinical translation. If these challenges can be addressed, transcription factor reprogramming of T cells into iPSCs and subsequent re-maturation into tumor-specific stem-like T cells may represent an incredibly efficacious approach to cancer immunotherapy.
基于细胞的免疫疗法是一种很有前景的癌症治疗策略。然而,特别是在实体瘤的情况下,这种策略仅使少数患者受益。免疫疗法的一个关键限制是T细胞耗竭,这是一种终末分化状态,其特征是自我更新能力和细胞毒性能力丧失。十多年来,人们一直在探索通过再生免疫学方法来克服耗竭并恢复T细胞的干细胞样特征。利用诱导多能干细胞(iPSC)技术将肿瘤特异性T细胞重编程回分化程度较低的干细胞样状态,被视为一种强大且极具吸引力的策略,以克服由耗竭所带来的限制。然而,这些方法的临床转化受到后续iPSC到T细胞再成熟策略的要求、极低的效率以及资源密集型细胞培养方案的阻碍。在这篇综述中,我们讨论了转录因子重编程为iPSC的出现、当代T细胞重编程技术以及再分化为成熟T细胞的技术。我们讨论了T细胞重编程和再成熟策略的潜在临床应用,以及临床转化的进展和主要障碍。如果这些挑战能够得到解决,将T细胞通过转录因子重编程为iPSC并随后再成熟为肿瘤特异性干细胞样T细胞,可能代表一种极其有效的癌症免疫治疗方法。
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