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中国临床药理学与治疗学 ›› 2017, Vol. 22 ›› Issue (4): 361-366.

• 基础研究 •    下一篇

脂氧素A4抑制缺氧诱导的滋养细胞氧化应激和凋亡

黄艳君,吴 洁,蒋 维,王 晓,黄引平   

  1. 温州医科大学附属第一医院产科,温州 325000,浙江
  • 收稿日期:2016-11-30 修回日期:2017-01-12 出版日期:2017-04-26 发布日期:2017-04-26
  • 通讯作者: 黄引平,女,教授,主任医师,博导,研究方向:围产医学。 Tel:0577-88069504 E-mail:yphuangp@126.com
  • 作者简介:黄艳君,女,硕士,主治医师,研究方向:围产医学。 Tel:0577-88069204 E-mail:wz5000@126.com
  • 基金资助:

    国家自然科学基金项目(81070510,81671480);浙江省自然科学基金项目(Y2101233,LY16H040009)

Lipoxin A4 attenuates hypoxia induced oxidative stress and apoptosis in human first trimester trophoblast cells

HUANG Yanjun, WU Jie, JIANG Wei, WANG Xiao, HUANG Yinping   

  1. Department of Obstetrics, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
  • Received:2016-11-30 Revised:2017-01-12 Online:2017-04-26 Published:2017-04-26

摘要:

目的: 探讨脂氧素A4(LXA4)对缺氧条件下人早孕细胞滋养细胞氧化应激及凋亡的影响。方法: 选取正常早孕(6~8周)绒毛,分离、纯化、鉴定得到细胞滋养细胞,分为常氧组、缺氧组、缺氧+1 nmol/L LXA4组、缺氧+10 nmol/L LXA4组、缺氧+100 nmol/L LXA4组。各组细胞培养72 h后,采用 DCFH-DA探针检测活性氧(ROS)含量,黄嘌呤氧化酶法检测超氧化物歧化酶(SOD)活性,分光光度计法检测过氧化氢酶(CAT)活性,比色法检测谷胱甘肽过氧化物酶(GPx)活性,流式细胞仪检测凋亡率,免疫印迹法检测Bcl-2、Bax蛋白表达。结果: 与常氧组比较,缺氧组ROS水平升高(P<0.05),SOD、CAT、GPx活性降低(P<0.05),凋亡率升高(P<0.05)。与缺氧组比较,缺氧+1、10、100 nmol/L LXA4组ROS水平均降低(P<0.05),SOD、CAT、GPx活性均升高(P<0.05),凋亡率均降低(P<0.05)。与常氧组相比,缺氧组的Bcl-2蛋白量减少,Bax蛋白量增加(P<0.05);缺氧+1、10、100 nmol/L LXA4组Bcl-2蛋白量较缺氧组均升高,Bax蛋白量较缺氧组均降低(P<0.05)。结论: LXA4可抑制缺氧诱导的人早孕细胞滋养细胞的氧化应激和凋亡,Bcl-2/Bax表达调控可能是LXA4抗滋养细胞凋亡的一个重要机制。

关键词: 脂氧素, 滋养细胞, 缺氧, 氧化应激, 凋亡

Abstract:

AIM: To investigate the effect of lipoxin A4 (LXA4) on oxidative stress and apoptosis of human first trophoblast cells induced by hypoxia.  METHODS: Primary human trophoblast cells were randomized into normoxia group, hypoxia group and hypoxia+LXA4 (1,10 and 100 nmol/L) groups. The level of ROS was determined by DCFH-DA, the activity of SOD, CAT and GPx were detected by the corresponding kits. The apoptosis rate was analyzed by flow cytometer method and the level of Bcl-2 and Bax protein were observed by Western Blot. RESULTS: Compared with normoxia group, the level of ROS and apoptosis rate increased (P<0.05) while the activity of SOD, CAT and GPx decreased (P<0.05) in hypoxia group. Compared with hypoxia group, the level of ROS and apoptosis rate decreased (P<0.05), while the activity of SOD, CAT and GPx increased (P<0.05) in hypoxia+LXA4 (1,10 and 100 nmol/L) groups. Compared with normoxia group, the level of Bcl-2 protein in hypoxia group decreased and the level of Bax protein increased (P<0.05). Compared with hypoxia group, the level of Bcl-2 protein in hypoxia+LXA4 (1,10 and 100 nmol/L) groups increased and the level of Bax protein decreased (P<0.05). CONCLUSION: Lipoxin A4 attenuates hypoxia induced oxidative stress and apoptosis in human first trophoblast cells. The regulation of Bcl-2/Bax expression may be an important mechanism of LXA4 in inhibiting apoptosis.

Key words: lipoxin, trophoblast, hypoxia, oxidative stress, apoptosis

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