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熊果酸对肝星状细胞内活性氧产生的影响及与细胞凋亡的关系 被引量:5

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摘要 目的体外观察熊果酸对肝星状细胞内活性氧(ROS)的产生、细胞凋亡、NF-κB核易位及X-连锁凋亡抑制蛋白(XIAP)mRNA表达的影响,探讨熊果酸诱导肝星状细胞凋亡的机制。方法取对数生长期的肝星状细胞(HSC-T6)进行分组,A组:瘦素(100 ng/mL)刺激组;B组:瘦素+熊果酸(50μmol/L)组;C组:瘦素+N-乙酰-L半胱氨酸(10 mmol/L)组;D组:空白对照组。检测DCF荧光强度(反映ROS水平)、细胞凋亡率、NF-κB(P65)核移位率、XIAP mRNA的表达。结果 (1)A组HSC-T6细胞内DCF荧光强度明显强于D组,B、C组细胞内ROS水平明显低于A组(均P<0.001)。(2)A组在48 h的HSC-T6细胞凋亡率低于D组(P<0.05);B组在48 h的HSC-T6凋亡率不仅明显高于A组(P<0.001),而且高于C、D组(均P<0.05)。(3)A组细胞NF-κB核移位率显著高于D组(P<0.001);B、C组的NF-κB核移位率均显著低于A组(均P<0.001)。(4)瘦素作用HSC-T6细24 h的XIAP mRNA表达显著高于D组(P<0.01);B、C组在12、24 h的表达均低于A组(P<0.01或P<0.05)。结论熊果酸能抑制瘦素刺激HSC-T6细胞引起的ROS产生,并能诱导HSC-T6细胞凋亡,其机制可能与抑制ROS对NF-κB的活化,下调XIAP基因表达有关。
出处 《广东医学》 CAS CSCD 北大核心 2011年第11期1391-1394,共4页 Guangdong Medical Journal
基金 江西省卫生厅科技计划项目(编号:20091008)
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参考文献14

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