芹菜素对小鼠T淋巴细胞体外增殖、细胞周期和凋亡的影响

目的:研究芹菜素(AP)对小鼠T 细胞体外增殖、细胞周期和凋亡的影响.方法:无菌分离小鼠淋巴结和胸腺细胞,MTT 法检测不同浓度(25、50、100、150、200 μmol/L)的AP 对多克隆刺激剂刀豆蛋白A(ConA)诱导的T 细胞增殖的影响,PI 染色结合流式细胞术(FCM)分析细胞周期的分布,Annexin V-FITC/PI 双染色结合FCM 检测AP 对T细胞凋亡的影响,以及AP与地塞米松(DEX)共同作用下T 细胞凋亡的变化,并用MTT 法检测该药物浓度对T细胞的毒性作用.结果:25～200 μmol/L AP对T细胞无药物毒性作用,并明显抑制ConA诱导的T 细胞增殖(P<0.01),使细胞周期停滞在G0/G1期,且呈剂量依赖关系;各浓度AP对T细胞凋亡均具有抑制作用,并明显抑制DEX诱导的T细胞凋亡(P<0.01),且呈剂量依赖关系.结论:在一定浓度范围内,AP 明显抑制ConA诱导的小鼠T细胞体外增殖,使细胞周期停滞G0/G1期,并明显抑制T 细胞凋亡.

Effect of Apigenin on proliferation, cell cycle and apoptosis of mouse T cells in vitro

AIM: To study the effect of Apigenin (AP) on the proliferation, cell cycle and apoptosis of mouse T cells in vitro. METHODS: The lymphocytes were prepared from lymph nodes and thymus of mice. The effect of AP on the proliferation of T in response to ConA at different concentrations (25, 50, 100, 150, 200 mumol/L) was detected by MTT. Cell cycle was measured by PI staining and FCM. The effect of Apigenin and Apigenin with DEX on T cell apoptosis was measured by Annexin V-FITC/PI double staining and FCM. The effect of different concentrations of AP cytotoxicity to T cells was measured by MTT. RESULTS: 25-200 mumol/L of AP didn't have cytotoxicity to T cells, but it had some inhibitory effect on T cells in response to ConA(P<0.01), arresting cell cycle at G(0)/G(1) in a dose-dependent manner. Different concentrations of AP inhibited the apoptosis of T cells, especially those induced by DEX(P<0.01). CONCLUSION: AP can inhibit the proliferation of mouse T cells in response to ConA, arrest cell cycle at G(0)/G(1) and inhibit the apoptosis of T cells.