期刊
JOURNAL FOR IMMUNOTHERAPY OF CANCER
卷 9, 期 7, 页码 -出版社
BMJ PUBLISHING GROUP
DOI: 10.1136/jitc-2020-001872
关键词
immunocompetence; immunotherapy; translational medical research
Cancer immunotherapies have shown remarkable success in providing new hope for cancer patients, but a significant number of patients still do not respond to treatment. Exercise and physical activity have been shown to reduce cancer incidence and improve outcomes, potentially through enhancing immune function. Exercise can lead to increased mobilization of leukocytes and improve physical fitness, which in turn may have positive effects on immune responses to cancer immunotherapies.
The remarkable success of cancer immunotherapies has provided new hope to cancer patients. Unfortunately, a significant proportion of patients remain unable to respond to immunotherapy or maintain durable clinical responses. The lack of objective responses likely results from profound immune dysfunction often observed in patients with cancer. There is substantial evidence that exercise and physical activity can reduce incidence and improve outcomes in cancer patients. As the immune system is highly responsive to exercise, one potential avenue to improve immune function is through exercise and physical activity. A single event of dynamic exercise results in the substantial mobilization of leukocytes with increased functional capacities into the circulation. Chronic, or long-term, exercise leads to higher physical fitness in terms of greater cardiorespiratory function and/or muscle strength and endurance. High aerobic capacity, as measured by maximal oxygen uptake, has been associated with the reduction of dysfunctional T cells and improvements in the abundance of some T cell populations. To be sure, however, the mechanisms of exercise-mediated immune changes are both extensive and diverse. Here, we examine the evidence and theorize how acute and chronic exercise could be used to improve responses to cancer immunotherapies including immune checkpoint inhibitors, dendritic cell vaccines, natural killer cell therapies, and adoptive T cell therapies such as chimeric antigen receptor (CAR) T cells. Although the parameters of optimal exercise to yield defined outcomes remain to be determined, the available current data provide a compelling justification for additional human studies and clinical trials investigating the adjuvant use of exercise in immuno-oncology.
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