Impact of brief exercise on peripheral blood NK cell gene and microRNA expression in young adults

被引:76
|
作者
Radom-Aizik, Shlomit [1 ]
Zaldivar, Frank [1 ]
Haddad, Fadia [1 ]
Cooper, Dan M. [1 ]
机构
[1] Univ Calif Irvine, Dept Pediat, Pediat Exercise Res Ctr, Irvine, CA 92697 USA
关键词
leukocytes; epigenetic; immune system; miRNA; cancer; NATURAL-KILLER-CELLS; PHYSICAL-ACTIVITY; MONONUCLEAR-CELLS; IMMUNE-RESPONSES; T-CELLS; CANCER; ACTIVATION; CYTOTOXICITY; MELANOMA; SUBSETS;
D O I
10.1152/japplphysiol.01341.2012
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
Radom-Aizik S, Zaldivar F, Haddad F, Cooper DM. Impact of brief exercise on peripheral blood NK cell gene and microRNA expression in young adults. J Appl Physiol 114: 628-636, 2013. First published January 3, 2013; doi:10.1152/japplphysiol.01341.2012.-Natural killers (NK) cells are unique innate immune cells that increase up to fivefold in the circulating blood with brief exercise and are known to play a key role in first-response defense against pathogens and cancer immunosurveillance. Whether exercise alters NK cell gene and microRNA (miRNA) expression is not known. Thirteen healthy men (20-29 yr old) performed ten 2-min bouts of cycle ergometer exercise at a constant work equivalent to an average of 77% of maximum O-2 consumption interspersed with 1-min rest. Blood was drawn before and immediately after the exercise challenge. NK cells were isolated from peripheral blood mononuclear cells using a negative magnetic cell separation method. We used Affymetrix U133+2.0 arrays for gene expression and Agilent Human miRNA V2 Microarray for miRNAs. A stringent statistical approach (false discovery rate < 0.05) was used to determine that exercise significantly altered the expression of 986 genes and 23 miRNAs. Using in silico analysis, we found exercise-related gene pathways where there was a high likelihood of gene-miRNA interactions. These pathways were predominantly associated with cancer and cell communication, including p53 signaling pathway, melanoma, glioma, prostate cancer, adherens junction, and focal adhesion. These data support the hypothesis that exercise affects the gene and miRNA expression pattern in the population of NK cells in the circulation and suggest mechanisms through which physical activity could alter health through the innate immune system.
引用
收藏
页码:628 / 636
页数:9
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