γ干扰素对鼠源性平滑肌细胞内源性CXC配体16表达及细胞内脂质蓄积的影响
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湖南省自然科学基金(05JJ30040)


Effect of Interferon-γ on the CXC Ligand 16 Expression and the Lipid Accumulation in the Rat Aortic Smooth Muscle Cells
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    摘要:

    目的观察重组大鼠细胞因子γ干扰素对鼠源性平滑肌细胞内源性CXC配体16的表达及对细胞内脂质蓄积的影响。探讨重组大鼠γ干扰素对CXC配体16的改变与细胞内脂质蓄积是否有关。方法原代培养大鼠胸主动脉平滑肌细胞,用重组大鼠γ干扰素作用于平滑肌细胞,通过逆转录聚合酶链反应检测细胞内CXC配体16mRNA的表达;用重组大鼠γ干扰素和氧化型低密度脂蛋白先后作用于平滑肌细胞,高效液相色谱分析法检测细胞内胆固醇蓄积情况。结果γ干扰素可诱导鼠源性平滑肌细胞内源性CXC配体16 mRNA的表达增加;与仅有氧化型低密度脂蛋白孵育组相比,经γ干扰素和氧化型低密度脂蛋白共同孵育组的细胞内胆固醇酯与总胆固醇的比值显著增高。结论γ干扰素可能通过上调鼠源性平滑肌细胞内CXC配体16的表达,从而进一步促进细胞内脂质蓄积。

    Abstract:

    Aim To investigate whether CXC ligand 16(CXCL16) expressions were controlled by interferon-gamma(IFN-γ) secreted by the activated T cells and the effect on lipid accumulation in the rat aortic smooth muscle cells(SMC). Methods The cells were grown to confluence and then incubated with different concentration of IFN-γ.The CXCL16 expression was identified by reverse transcription polymerase chain reaction(RT-PCR);The effect of IFN-γ on oxidized low density lipoprotein(ox-LDL) uptake was identified by high performance liquid chromatography(HPLC) analysis. Results The CXCL16 mRNA expression was significantly increased after IFN-γ treatment;The rat aortic SMC lipid accumulation after IFN-γ treatment was increased in treated cells compared with untreated cells. Conclusion The T cell cytokine IFN-γ induces CXCL16 mRNA expression in rat aortic SMC and then leads to lipid accumulation in rat aortic SMC.

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杨婷,全智华.γ干扰素对鼠源性平滑肌细胞内源性CXC配体16表达及细胞内脂质蓄积的影响[J].中国动脉硬化杂志,2008,16(3):185~188.

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  • 收稿日期:2007-10-24
  • 最后修改日期:2008-02-25
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