类叶升麻苷调控Rnd3/NF-κB通路对缺氧/复氧诱导心肌细胞损伤的影响

R965.1; 目的 探讨类叶升麻苷调控Rho家族GTP酶3(Rnd3)/核因子κB(NF-κB)通路对缺氧/复氧(H/R)诱导心肌细胞损伤的影响.方法 本实验将H9c2心肌细胞分为对照组(不给药、不造模)、H/R组(仅造模)、H/R+AS-L组、H/R+AS-M组、H/R+AS-H组(以上3组先分别给予10、30、90 μmol/L类叶升麻苷,再造模)、H/R+pcDNA组[先转染pcDNA(空载体),再造模]、H/R+pcDNA-Rnd3组[先转染pcDNA-Rnd3(Rnd3过表达载体)使Rnd3过表达,再造模]、H/R+AS-H+si-NC组[先转染si-NC(阴性对照),然后给予90...

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Published in中国药房 Vol. 33; no. 5; pp. 542 - 547
Main Authors 杨洋, 李天发, 王军, 黄珊, 凌学斌
Format Journal Article
LanguageChinese
Published 海南医学院第一附属医院心血管内科,海口570102 2022
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ISSN1001-0408
DOI10.6039/j.issn.1001-0408.2022.05.06

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Abstract R965.1; 目的 探讨类叶升麻苷调控Rho家族GTP酶3(Rnd3)/核因子κB(NF-κB)通路对缺氧/复氧(H/R)诱导心肌细胞损伤的影响.方法 本实验将H9c2心肌细胞分为对照组(不给药、不造模)、H/R组(仅造模)、H/R+AS-L组、H/R+AS-M组、H/R+AS-H组(以上3组先分别给予10、30、90 μmol/L类叶升麻苷,再造模)、H/R+pcDNA组[先转染pcDNA(空载体),再造模]、H/R+pcDNA-Rnd3组[先转染pcDNA-Rnd3(Rnd3过表达载体)使Rnd3过表达,再造模]、H/R+AS-H+si-NC组[先转染si-NC(阴性对照),然后给予90μmol/L类叶升麻苷,再造模]、H/R+AS-H+si-Rnd3组[先转染si-Rnd3 (Rnd3小分子干扰RNA)抑制Rnd3过表达,然后给予90 μmol/L类叶升麻苷,再造模].各组经相应处理后,检测细胞凋亡率和细胞中乳酸脱氢酶(LDH)释放量、丙二醛(MDA)水平、超氧化物歧化酶(SOD)活性、肿瘤坏死因子α(TNF-α)水平、白细胞介素1β (IL-1β)水平、IL-6水平、Rnd3和NF-κB亚基p65 (NF-κB p65)mRNA及蛋白的表达、活化胱天蛋白酶3(Cleaved Caspase-3)和Cleaved Caspase-9蛋白表达的变化.结果 给予不同浓度类叶升麻苷均可降低H/R诱导H9c2心肌细胞凋亡率、Cleaved Caspase-3和Cleaved Caspase-9蛋白表达水平、NF-κB p65 mRNA及蛋白表达水平、LDH释放量和MDA、TNF-α、IL-1β、IL-6水平,升高SOD活性和Rnd3 mRNA及蛋白表达水平(P<0.05),且呈剂量依赖性.Rnd3过表达可使F/R诱导H9c2心肌细胞凋亡率,NF-κB p65、Cleaved Caspase-3、Cleaved Caspase-9蛋白表达水平,LDH释放量和MDA、TNF-α、IL-1β、IL-6水平降低,使Rnd3蛋白表达水平和SOD活性升高(P<0.05);而抑制Rnd3过表达,可减弱类叶升麻苷对F/R诱导H9c2心肌细胞的凋亡、氧化应激及炎症反应的抑制作用(P<0.05).结论 类叶升麻苷可通过促进Rnd3表达、抑制NF-κB p65表达来调控Rnd3/NF-κB通路,进而抑制心肌细胞凋亡、氧化应激及炎症反应
AbstractList R965.1; 目的 探讨类叶升麻苷调控Rho家族GTP酶3(Rnd3)/核因子κB(NF-κB)通路对缺氧/复氧(H/R)诱导心肌细胞损伤的影响.方法 本实验将H9c2心肌细胞分为对照组(不给药、不造模)、H/R组(仅造模)、H/R+AS-L组、H/R+AS-M组、H/R+AS-H组(以上3组先分别给予10、30、90 μmol/L类叶升麻苷,再造模)、H/R+pcDNA组[先转染pcDNA(空载体),再造模]、H/R+pcDNA-Rnd3组[先转染pcDNA-Rnd3(Rnd3过表达载体)使Rnd3过表达,再造模]、H/R+AS-H+si-NC组[先转染si-NC(阴性对照),然后给予90μmol/L类叶升麻苷,再造模]、H/R+AS-H+si-Rnd3组[先转染si-Rnd3 (Rnd3小分子干扰RNA)抑制Rnd3过表达,然后给予90 μmol/L类叶升麻苷,再造模].各组经相应处理后,检测细胞凋亡率和细胞中乳酸脱氢酶(LDH)释放量、丙二醛(MDA)水平、超氧化物歧化酶(SOD)活性、肿瘤坏死因子α(TNF-α)水平、白细胞介素1β (IL-1β)水平、IL-6水平、Rnd3和NF-κB亚基p65 (NF-κB p65)mRNA及蛋白的表达、活化胱天蛋白酶3(Cleaved Caspase-3)和Cleaved Caspase-9蛋白表达的变化.结果 给予不同浓度类叶升麻苷均可降低H/R诱导H9c2心肌细胞凋亡率、Cleaved Caspase-3和Cleaved Caspase-9蛋白表达水平、NF-κB p65 mRNA及蛋白表达水平、LDH释放量和MDA、TNF-α、IL-1β、IL-6水平,升高SOD活性和Rnd3 mRNA及蛋白表达水平(P<0.05),且呈剂量依赖性.Rnd3过表达可使F/R诱导H9c2心肌细胞凋亡率,NF-κB p65、Cleaved Caspase-3、Cleaved Caspase-9蛋白表达水平,LDH释放量和MDA、TNF-α、IL-1β、IL-6水平降低,使Rnd3蛋白表达水平和SOD活性升高(P<0.05);而抑制Rnd3过表达,可减弱类叶升麻苷对F/R诱导H9c2心肌细胞的凋亡、氧化应激及炎症反应的抑制作用(P<0.05).结论 类叶升麻苷可通过促进Rnd3表达、抑制NF-κB p65表达来调控Rnd3/NF-κB通路,进而抑制心肌细胞凋亡、氧化应激及炎症反应
Author 李天发
凌学斌
黄珊
王军
杨洋
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YANG Yang
LI Tianfa
WANG Jun
LING Xuebin
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Keywords 类叶升麻苷;Rnd3/NF-κB通路;缺氧/复氧;H9c2心肌细胞;细胞凋亡;氧化应激;炎症反应
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