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中国临床药理学与治疗学 ›› 2011, Vol. 16 ›› Issue (11): 1216-1221.

• 基础研究 • 上一篇    下一篇

三七皂苷单体R1对低氧高二氧化碳肺动脉平滑肌细胞ERK1/2表达的影响

唐兰兰1,2, 王淑君1, 黎关龙1, 王园园1, 周俊辉1, 赵珊1, 刘亚坤1, 王万铁1   

  1. 1温州医学院病理生理学教研室,温州 325035,浙江;
    2浙江中医药大学附属第二医院病理科,杭州 310005,浙江
  • 收稿日期:2011-08-01 修回日期:2011-10-30 出版日期:2011-11-26 发布日期:2011-11-29
  • 通讯作者: 王万铁,男,教授、主任医师,硕士生导师,研究方向:缺血/再灌注损伤和肺动脉高压发病机制研究及临床应用。E-mail:wzwwt@tom.com
  • 作者简介:唐兰兰,女,住院医师,研究方向:肺动脉高压发病机制研究及临床应用。Tel: 0577-86689817 E-mail: tanglanlan1982@163.com 王淑君,并列第一作者,女,硕士,研究方向:肺动脉高压发病机制研究及临床应用。Tel: 0577-86689817 E-mail: wangshujun10305@163.com
  • 基金资助:
    浙江省中医药科技计划重点项目(2008ZA017)

Effects of Notoginsenoside monomer R1 on the expression of ERK1/2 in PASMCs

TANG Lan-lan1,2, WANG Shu-jun1, LI Guan-long1, WANG Yuan-yuan1, ZHOU Jun-hui1, ZHAO Shan1, LIU Ya-kun1, WANG Wan-tie1   

  1. 1Department of Pathophysiology, Wenzhou Medical College, Wenzhou 325035, Zhejiang, China;
    2Department of Pathology, the Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310005, Zhejiang, China
  • Received:2011-08-01 Revised:2011-10-30 Online:2011-11-26 Published:2011-11-29

摘要: 目的: 探讨三七皂苷单体R1减轻低氧高二氧化碳性肺动脉收缩(hypoxia hypercapnia-induced pulmonary vasoconstriction, HHPV)的作用及其与细胞外信号调节激酶(ERK)1/2信号通路的关系。方法: 原代培养雄性SD大鼠肺动脉平滑肌细胞(PASMCs),随机分为6组:常氧组(N组),低氧高二氧化碳组(H组),DMSO对照组(HD组),R1干预组(R8、R40、R100组)。采用免疫印迹法测定ERK1/2磷酸化蛋白表达,半定量逆转录-聚合酶链反应技术检测ERK1、ERK2基因表达水平。结果: p-ERK蛋白在N组表达弱,与H、HD组比较,R8、R40、R100组均不同程度下调,以R8组为著,差异有统计学意义(P<0.01);ERK1 mRNA、ERK2 mRNA在N组弱表达,与H、HD组比较,R8、R40、R100组表达均不同程度降低(P<0.01 和P<0.05),以R8组为著。结论: ERK1/2信号通路可能介导大鼠低氧高二氧化碳性肺动脉收缩;三七皂苷单体R1可能通过抑制ERK1/2通路减轻低氧高二氧化碳性肺动脉收缩。

关键词: 低氧高二氧化碳, 肺动脉高压, ERK1/2通路, 三七皂苷单体R1

Abstract: AIM: To study the effect of monomer R1 aleviating HHPV via MAPKs signal pathway.METHODS: To culture pulmonary arterial smooth muscle cells (PASMCs) of male SD rats primarily, PASMCs were randomly divided into 6 groups: control group(N), hypoxia hypercapnia group(H), DMSO incubation group (HD), R1 groups(R8, R40, R100). Incubated cells were collected. p-Erk1/2 was investigated through western blot, and ERK1 mRNA and ERK2 mRNA were detected via RT-PCR.RESULTS: The expretion of p-ERK protein was weak in the N group, and in R8,R40 and R100 groups the level of p-ERK was reduced significantly(P<0.01), declining mostly in R8 group. The expretion of ERK1 mRNA and ERK2 mRNA was not obvious in N group, and comparing with H and HD groups it markedly down-regulated in R8, R40 and R100 groups(P<0.01, P<0.05), reaching its lowest point in R8 group.CONCLUSION: ERK1/2 signal pathway may play an important role in HHPV in rat.The effect of R1 on relaxing HHPV may be related to inhibiting expression of ERK1/2.

Key words: Hypoxic hypercapnia, Pulmonary arterial hypertension, ERK1/2 signal pathway, Notoginsenoside monomer R1

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