Journal
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
Volume 59, Issue 6, Pages 992-1007Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10408398.2018.1537237
Keywords
Cancer immunology; carotenoids; curcumin; resveratrol; EGCG; beta-glucans
Categories
Funding
- NIH [5 R01 CA148818, 5 R01 CA185301, AI129582, NS106170]
- American Cancer Society [RSG-13-138-01-CNE, RSG-14-243-01-LIB]
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Cancer is considered a fetal disease caused by uncontrolled proliferation and progression of abnormal cells. The most efficient cancer therapies suppress tumor growth, prevent progression and metastasis, and are minimally toxic to normal cells. Natural compounds have shown a variety of chemo-protective effects alone or in combination with standard cancer therapies. Along with better understanding of the dynamic interactions between our immune system and cancer development, nutritional immunology-the use of natural compounds as immunomodulators in cancer patients-has begun to emerge. Cancer cells evolve strategies that target many aspects of the immune system to escape or even edit immune surveillance. Therefore, the immunesuppressive tumor microenvironment is a major obstacle in the development of cancer therapies. Because interaction between the tumor microenvironment and the immune system is a complex topic, this review focuses mainly on human clinical trials and animal studies, and it highlights specific immune cells and their cytokines that have been modulated by natural compounds, including carotenoids, curcumin, resveratrol, EGCG, and beta-glucans. These natural compounds have shown promising immune-modulating effects, such as inhibiting myeloid-derived suppressor cells and enhancing natural killer and cytolytic T cells, in tumor-bearing animal models, but their efficacy in cancer patients remains to be determined.
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