中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (20): 3618-3625.doi: 10.3969/j.issn.2095-4344.2013.20.002

• 骨组织构建 bone tissue construction • 上一篇    下一篇

平滑肌细胞成骨分化致血管钙化中MAPK信号通路基因的表达谱变化

金  波1,尹恒冲2,汪凌清1,包丽雯1,李延林1,朱  军1,施海明1   

  1. 1 复旦大学附属华山医院心内科,上海市  200040
    2 河南省汝阳县人民医院心内科,河南省洛阳市  471200
  • 收稿日期:2012-10-18 修回日期:2012-11-20 出版日期:2013-05-14 发布日期:2013-05-14
  • 通讯作者: 施海明,医学博士,主任医师,教授,博士生导师,复旦大学附属华山医院心内科,上海 200040 shihmhs@yahoo.com.cn
  • 作者简介:金波☆,男,1977年生,安徽省淮南市人,汉族,2007年复旦大学附属华山医院毕业,医学博士,主治医师,主要从事冠心病的基础和临床研究。 jinbo7711@yahoo.com.cn
  • 基金资助:

    国家自然科学基金项目(81100157)。

Expression prolife of mitogen-activated protein kinase pathway genes in vascular calcification associated with osteogenic differentiation of smooth muscle cells

Jin Bo1, Yin Heng-chong2, Wang Ling-qing1, Bao Li-wen1, Li Yan-lin1, Zhu Jun1, Shi Hai-ming1   

  1. 1 Department of Cardiology, Huashan Hospital, Fudan University, Shanghai  200040, China
    2 Department of Cardiology, Ruyang People’s Hospital, Luoyang  471200, Henan Province, China
  • Received:2012-10-18 Revised:2012-11-20 Online:2013-05-14 Published:2013-05-14
  • Contact: Shi Hai-ming, M.D., Chief physician, Professor, Doctoral supervisor, Department of Cardiology, Huashan Hospital, Fudan University, Shanghai 200040, China shihmhs@yahoo.com.cn
  • About author:Jin Bo☆, M.D., Attending physician, Department of Cardiology, Huashan Hospital, Fudan University, Shanghai 200040, China jinbo7711@yahoo.com.cn
  • Supported by:

    the National Natural Science Foundation of China, No. 81100157

摘要:

背景:血管钙化是一种细胞介导的主动的、可调控的复杂生物学过程,血管平滑肌细胞转分化为成骨样细胞发挥着重要作用,其确切机制尚不清楚。
目的:探讨尿毒症背景下动脉粥样硬化血管钙化的病理生理机制。
方法:采用5/6肾切除法建立尿毒症背景下ApoE-/-小鼠动脉血管钙化模型,苏木精-伊红染色和Von Kossa染色观察主动脉组织形态学特点,明确造模成功。应用小鼠全基因组Agilent芯片筛查MAPK 信号通路的差异表达基因,实时定量PCR分析验证部分与MAPK信号通路相关的差异表达基因,并结合通路分析来探索MAPK信号通路与血管钙化的内在联系。
结果与结论:造模12周后,尿毒症ApoE-/-小鼠主动脉组织形态学特点证实动脉粥样硬化钙化斑块形成。Agilent基因芯片检测结果显示,MAPK信号通路中存在14个差异表达基因,RT-PCR验证结果与芯片检测结果相符合。经KEGG通路分析,ERK1/2信号通路可能在血管钙化的病理生理过程中扮演着重要的角色。说明5/6肾切除ApoE-/-小鼠主动脉钙化斑块形成与MAPK 信号通路激活密切相关,该信号通路可能在平滑肌细胞转分化过程中起着至关重要作用。

关键词: 组织构建, 骨组织构建, 动脉粥样硬化, 血管钙化, 尿毒症, 平滑肌细胞, 丝裂原活化蛋白激酶, 基因芯片, 表达谱, MAPK信号通路, 形态学变化, 差异表达基因, 国家自然科学基金

Abstract:

BACKGROUND: Vascular calcification is recognized as an active and regulated biological process involving osteoblast-like cell transdifferentiation of vascular smooth muscle cells. However, the precise mechanism of vascular calcification is still unclear. 
OBJECTIVE: To explore the pathophysiological mechanism of atherosclerotic calcification in uremic mice.
METHODS: The animal model of atherosclerotic calcification in Apolipoprotein E knock-out mice was established with 5/6 nephrectomy. Histomorphological changes of aorta sections of mice were evaluted by hematoxylin-eosin staining and Von Kossa staining to confirm atherosclerotic calcification. The differentially expressed genes in mitogen-activated protein kinase pathway were evaluated using mouse whole-genome Agilent chip. Real-time quantitative reverse transcriptase-polymerase chain reaction was used to verify gene expression changes related to mitogen-activated protein kinase pathway, and combined with pathway analysis to explore the relationship between mitogen-activated protein kinase pathway and vascular calcification.
RESULTS AND CONCLUSION: The histomorphological changes of aorta sections of uremic Apolipoprotein E knock-out mice indicated atherosclerotic calcification after 12 weeks of modeling. Microarray hybridization identified fourteen differentially expressed genes in the mitogen-activated protein kinase pathway, which have significantly altered their expression levels during atherosclerotic calcification. Reverse transcriptase-polymerase chain reaction results were consistent with the chip validation. The extracellular signal-regulated kinase 1/2 signal transduction pathway played an important role in vascular calcification, identified by KEGG pathway analysis. Experimental findings indicate that, atherosclerotic calcification in Apolipoprotein E knock-out mice with 5/6 nephrectomy is closely associated with mitogen-activated protein kinase signaling pathway, which plays an important role in smooth muscle phenotypic transition.

Key words: tissue construction, bone tissue construction, atherosclerosis, vascular calcification, uremia, smooth muscle cells, mitogen activated protein kinase, gene chip, expression profile, mitogen-activated protein kinase signaling pathway, morphology, differentially expressed gene, National Natural Science Foundation of China

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