Journal
INTERNATIONAL IMMUNOPHARMACOLOGY
Volume 11, Issue 9, Pages 1234-1240Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.intimp.2011.04.002
Keywords
Curcumin; Lung tumor-bearing mice; CTL; IFN-gamma
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Funding
- National Science Foundation of China [30872378, J0730860, 81072408]
- National Key Technologies R & D Program of China [2009ZX10004-104, 2009ZX09301-011]
- National Basic Research Program of China (973 Program) [2010CB912600, 2011CB910400]
- Science and Technology Commission of Shanghai Municipality in China [10JC1401100]
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Curcumin, a yellow pigment extracted from turmeric, is widely used to inhibit tumor progression. Since it can either promote or suppress the immune system, how curcumin affects the immune system in tumor-bearing bodies is not yet clear. Our study found that tumor-bearing mice treated consecutively once a day with low-dose curcumin for ten days led to a retarded tumor growth and a longer survival, which might be contributed to T cell-mediated adaptive immune response. The in vitro study also showed that a high-dose curcumin decreases T cells whereas a low-dose increases T cells derived from 3LL tumor-bearing mice, especially CD8+ T cells. Accordingly, these increased CD8+ T cells exhibited the enhancement of IFN-gamma secretion, proliferation and cytotoxicity specifically against 3LL tumor cells, which may result in the success of antitumor immunity. Our research demonstrated a beneficial effect of curcumin on CD8+ T cells derived from tumor-bearing mice, which can provide a potential application in anti-tumor therapy. (C) 2011 Elsevier B.V. All rights reserved.
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