Apoptosis and Cancer Immunotherapy: Current Mechanisms and Emerging Strategies

Apoptotic pathways are essential for maintaining cellular balance and removing damaged or malignant cells. Apoptosis activation in tumor cells is a crucial process in cancer immunotherapy that leads to treatment effectiveness. Immunotherapy has significantly transformed cancer treatment by utilizing immune checkpoint blockage, bispecific antibodies, and adoptive T cell transfer. These approaches have produced remarkable clinical outcomes in both blood cancers and solid tumors. T cell-based immunotherapies seek to trigger apoptosis in cancer cells, but the ability of cancer cells to avoid apoptosis is a characteristic feature of cancer biology. Increasing the susceptibility of cancer cells to programmed cell death, known as apoptosis, is a crucial approach for enhancing the effectiveness of medical treatments. Recent progress in comprehending apoptotic signaling pathways has opened up new possibilities for innovative immunotherapeutic approaches. These improvements involve improving T cell-based therapies by making cancer cells more susceptible to death and addressing the paradox of apoptosis in T cells, which can weaken immunotherapy. This chapter examines the existing apoptosis methods in cancer immunotherapy, focusing on developing approaches such as immune checkpoint inhibitors, CAR-T cell therapy, and innovative small chemicals. Our goal is to analyze the complex relationship between immune responses and cell death signaling to present a detailed summary of the most advanced methods and potential future developments in this quickly changing area of research. Comprehending these pathways is crucial for advancing more efficient and specific cancer immunotherapies. The ultimate goal is to promote the survival of cytotoxic T cells in the tumor microenvironment and strengthen the body’s immune response against tumors.