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白藜芦醇对小鼠前脂肪细胞凋亡及细胞周期的影响 被引量:3

Effect of resveratrol on cell cycle and apoptosis in 3T3-L1 preadipocytes
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摘要 目的研究白藜芦醇(Res)对小鼠前脂肪细胞凋亡及细胞周期的影响及其机制。方法分别用25、50、75、100μmol/L的Res干预小鼠前脂肪细胞24、48、72h,并设0μmol/LRes为阴性对照组(每组设3个复孔,重复3次)。全自动倒置荧光显微镜观察细胞的形态学变化、细胞增殖.毒性检测试剂盒检测细胞增殖活性、流式细胞仪检测细胞凋亡与细胞周期。结果形态学上.经50μmol/LRes干预48h后的小鼠前脂肪细胞具有典型凋亡形态学改变。细胞增殖-毒性检测发现,0、25、50、75、100μmol/LRes干预24h细胞增殖率分别为100%、(97.00±1.00)%、(91.00±2.65)%、(90.67±2.52)%和(86.00±3.61)%;干预48h细胞增殖率分别是100%、(86.67±2.52)%、(76.00±2.00)%、(34.33±2.08)%和(30.33±2.52)%;干预72h,细胞增殖率分别是100%、(82.00±2.65)%、(65.67±3.06)%、(21.00±3.61)%和(16.33±3.21)%。偏相关分析结果显示细胞增殖率与干预时间、Res浓度均呈负相关关系(r=-0.72、-0.83,均P〈0.01)。0、25、50、75、100μmol/LRes干预24h,G0/G1期的细胞比例分别为(27.23±2.63)%、(39.03±2.74)%、(80.20±5.15)%、(87.97±3.12)%和(90.80±2.08)%;S期的细胞比例分别为(72.43±2.99)%、(63.93±6.90)%、(19.80±5.15)%、(12.20±2.86)%和(9.20±2.08)%,2个细胞周期的50、75、100μmol/LRes干预组与阴性对照组之间的细胞比例差异均有统计学意义(P〈0.05或P〈0.01)。0、25、50、75、100μmol/LRes干预48h,细胞凋亡率分别为(2.90±0.10)%、(5.40±3.81)%、(8.23±4.24)%、(29.77±6.18)%和(27.23±3.17)%;细胞坏死率分别为(7.50±0.87)%、(12.00±4.89)%、(12.27±3.81)%、(12.67±6.13)%和(20.73±2.64)%,100μmol/L的干预组的细胞调亡率、坏死率与阴性对照组的差异均具有统计学意义(P〈0.05或P〈0.01),其他各组与阴性对照组的差异均无统计学意义(P〉0.05)。结论在一定的剂量范围内(0~100μmol/L),Res可能抑制小鼠前脂肪细胞生命周期并促进其凋亡。 Objective To study the effects and mechanism of resveratrol (Res) on apoptosis and cell cycle in 3T3-L1 preadipocytes. Methods 3T3-L1 preadipocytes were treated with different doses of Res treatment (0, 25, 50, 75, and 100μmol/L,0 μmol/L as the negative control)for 24,48 or 72 h. The fluorescence microscope, MTT assay, and flow-cytometry were used for measuring cell morphology, cell proliferation, cell cycle, and apoptosis. Results After treated with 50 μmol/L of Res for 48 h,3T3-L1 preadipocytes exhibited typical apoptosis features when observed under fluorescence microscope. Mrl3' assay showed that,after different doses of Res treatment (0, 25, 50, 75, and 100 μmol/L) for 24 h,cell prolif- eration rate was 100%, (97.00 ± 1.00)%, (91.00 ± 2. 65)%, (90.67 ± 2. 52)%, and (86. 00 ± 3.61 )%, respectively; after the similar Res treatment for 48 h, cell proliferation rate was 100%, (86. 67 ± 2. 52) % , ( 76. 00 ± 2. 00) % , ( 34. 33 ± 2.08 ) %, and ( 30. 33 ± 2. 52 ) % , respectively ; also, after the similar Res treatment for 72 h, cell proliferation rate was 100%, (82.00 ± 2.65)%, (65.67 ± 3.06) % , (21.00 ± 3.61 ) % , and ( 16. 33 ± 3.21 ) % , respectively. Partial correlation analysis showed a negative correlation between cell proliferation rate and intervention time, concentration of Res (r= -0.72,-0.83, all P 〈 0.01 ). After different doses of Res treatment (0, 25, 50, 75, and 100 μmol/L) for 24 h,the portion of cells in GO/G1 phase was (27.23 ±2. 63)% , (39.03 ±2. 74)% , (80. 20 ±5.15)% , (87.97 ±3.12)% , (90. 80 ±2.08)% ,respectively;as the same,the portion of cells ins phase was (72.43 ±2.99)%, (63.93 ±6.90)%, (19.80 ±5.15)%, (12.20 ±2.86)%, (9. 20 ±2.08 ) % ,respectively. From the results of the cell cycle examination, the portion of cells in G0/G1 phase decreased (P 〈 0.05 or P 〈 0. 01 ) and increased evidently in S phase (P 〈 0.05 or P 〈 0. 01 ) in a dose dependent manner. After different doses of Res treatment (0, 25,50, 75, 100 μmol/L) for 48 h, apoptosis rate was ( 2. 90 ± 0. 10) %, (5.40 ± 3.81 ) %, ( 8.23 ±4. 24) %, ( 29. 77 ± 6. 18 ) %, (27.23 ± 3.17 ) %, respectively ; as the same, necrosis rate was (7. 50 ± 0. 87 ) %, ( 12. 00 ± 4. 89 ) %, ( 12. 27 ± 3.81 ) % , ( 12.67 ± 6. 13 ) % , ( 20. 73 ± 2. 64 ) % , respectively. The apoptosis and necrosis of 3T3 -L1 preadipocytes were statistically significant different between 100 μmol/L Res group and negative control group (P 〈 0.05 or P 〈 0.01 ). Conclusion At a certain dose range (0-100 μmol/L), Res may inhibit the life cycle and promote apoptosis of 3T3-L1 preadipocytes.
出处 《华南预防医学》 2013年第5期1-5,共5页 South China Journal of Preventive Medicine
基金 广东省建设中医药强省课题(No.20111157)
关键词 白藜芦醇 脂肪细胞 细胞周期 细胞凋亡 Resveratrol Adipocytes Cell cycle Apoptosis
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共引文献35

同被引文献51

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