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- W3029973376 abstract "Objective To investigate the role of allicin on rat nature killer (NK) cell activity in vitro under acidic microenvironment, and its possible mechanism. Methods CD3- NKR-P1+ NK cells isolated from the rat spleen were cultured in the complete RPMI 1640 medium ( pH 5. 6, pH 6. 5, or pH 7. 2 respectively), and treated with allicin at final concentration of 30 mg/L. Enzyme linked immunosorbent assay (ELISA) was used to determine supernatant interferon (IFN)-γ levels. The percentage of NK cells proliferation and apopotosis was analyzed by flow cytometry. NK cell cytotoxicity toward YAC-1 tumor cells was detected by LDH release assay. Results Proliferation and cytotoxicity of NK cells were significantly suppressed by acidic microenvironment in vitro. Under the cultured condition of acidic pH below 7. 2, allicin seemed to promote NK cells proliferation, which reached to highest level of 33% at pH 5. 6 cultured for 16 h. Correspondingly, at pH of 5. 6, allicin induced a marked increase of IFN-γ concentration in the supernatant from (50. 07 ± 0. 38) (cultured for 4 h) to (64. 59 ± 0. 09) ng/L ( cultured for 16 h). The cytotoxicity of NK cells toward YAC-1 tumor cells was also found strongest under the condition of pH 5. 6 cultured for 16 h. Conclusion Allicin favored to enhance the cytotoxicity of NK cells under the acidic cultured condition, which might be related to the increase of IFN-γ production.Key words: Allicin; Acidic microenvironment; NK cells" @default.
- W3029973376 created "2020-06-05" @default.
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- W3029973376 date "2011-05-08" @default.
- W3029973376 modified "2023-09-23" @default.
- W3029973376 title "Enhancement of rat nature killer cell activity by allicinin vitrounder acidic microenvironment" @default.
- W3029973376 doi "https://doi.org/10.3760/cma.j.issn.1001-9030.2011.05.053" @default.
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