中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (9): 1397-1402.doi: 10.3969/j.issn.2095-4344.1605

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

基于HOXA10调控网络探讨骨髓间充质干细胞移植治疗大鼠薄型子宫内膜

王一飞,宋 阳,关永格,许春燕   

  1. 广州中医药大学,广东省广州市 510006
  • 修回日期:2018-11-23 出版日期:2019-03-28 发布日期:2019-03-28
  • 通讯作者: 宋阳,博士,教授,广州中医药大学,广东省广州市 510006
  • 作者简介:王一飞,女,1992年生,山东省日照市人,汉族,2016年广州中医药大学毕业,硕士,主要从事妇产科方面的研究。
  • 基金资助:

    广东省自然科学基金(2017A030310454),项目负责人:许春燕;广东省科技计划项目(2017A020215119),项目负责人:关永格;广东省普通高校特色创新项目(2017KTSCX041),项目负责人:宋阳

Bone marrow mesenchymal stem cell transplantation in a rat model of thin endometrium based on HOXA10 regulatory network

Wang Yifei, Song Yang, Guan Yongge, Xu Chunyan   

  1. Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • Revised:2018-11-23 Online:2019-03-28 Published:2019-03-28
  • Contact: Song Yang, MD, Professor, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • About author:Wang Yifei, Master, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • Supported by:

    the Natural Science Foundation of Guangdong Province, No. 2017A030310454 (to XCY); the Scientific Research Plan Project of Guangdong Province, No. 2017A020215119 (to GYG); the Characteristic Innovation Project of Colleges and Universities in Guangdong Province, No. 2017KTSCX041 (to SY)

摘要:

文章快速阅读:

文题释义:
薄型子宫内膜:
是指黄体中期超声检查子宫内膜时,厚度值显示小于7 mm,当内膜厚度低于该厚度时,妊娠率可受显著影响。年龄、感染史、避孕药史以及宫腔手术史等因素均可导致薄型子宫内膜疾病的发生,产生闭经、月经量少等相应临床表现,影响女性的生育生殖,现代医学对薄型子宫内膜疾病的治疗仍处于积极的探索中。
miR-196b:研究表明miR-196b在骨髓间充质干细胞成骨分化过程及其相关转导通路中起重要调控作用,在细胞内上调或下调其表达会改变靶基因的表达水平,进而显著改变下游基因的表达和干细胞分化能力。miR-196b是HOXA10的周边基因,血管内皮生长因子、白血病抑制因子及整合素αvβ3是评估子宫内膜状态的常用蛋白,是HOXA10的下游基因,因此作者提出以HOXA10基因为关键转录因子的调控网络猜想,拟通过免疫组化法及qRT-PCR检测大鼠子宫内膜相关蛋白表达水平及基因转录情况,分析猜想网络中各因素之间的相关性,初步探讨骨髓间充质干细胞宫腔移植对薄型子宫内膜大鼠的作用机制。

 

摘要
背景:
薄型子宫内膜疾病是现阶段临床治疗中的一个难题,研究发现骨髓间充质干细胞移植技术具有其独特的疗效和优势,但是关于作用机制方面的研究尚较少开展。
目的:基于以HOXA10为中心的调控网络,探讨骨髓间充质干细胞移植对薄型子宫内膜大鼠的作用机制。  
方法:将21只SPF级成年雌性SD大鼠(购于广州中医药大学动物实验中心)随机分成3组:对照组、模型组、骨髓间充质干细胞组,每组7只;后2组采用体积分数为95%乙醇充盈宫腔制备薄型子宫内膜模型,对照组用生理盐水充盈宫腔;抽出乙醇和生理盐水后,骨髓间充质干细胞组大鼠宫腔内注入第3代骨髓间充质干细胞悬液1 mL(细胞浓度为1×1010 L-1),对照组和模型组大鼠宫腔内注入等体积生理盐水。观察2个动情周期后取出子宫,采用苏木精-伊红染色定量分析内膜厚度,免疫组化法检测内膜波形蛋白、角蛋白、血管内皮生长因子、白血病抑制因子及整合素αvβ3的表达,qRT-PCR法检测HOXA10、miR-196b基因表达。
结果与结论:①模型组和骨髓间充质干细胞组大鼠子宫内膜薄于对照组(P < 0.05),骨髓间充质干细胞组大鼠子宫内膜厚于模型组(P < 0.05);②模型组和骨髓间充质干细胞组子宫内膜中波形蛋白、角蛋白、血管内皮生长因子、白血病抑制因子及整合素αvβ3蛋白平均吸光度值低于对照组(P < 0.05),骨髓间充质干细胞组以上5种蛋白平均吸光度值高于模型组(P< 0.05);③模型组和骨髓间充质干细胞组大鼠子宫组织HOXA10基因相对转录水平低于对照组(P < 0.05),miR-196b基因相对转录水平高于对照组(P < 0.05);骨髓间充质干细胞组HOXA10基因相对转录水平高于模型组(P < 0.05),miR-196b基因相对转录水平低于模型组(P < 0.05);④miR-196b与HOXA10基因表达呈现负相关(P < 0.05),HOXA10与各蛋白表达呈现不同程度正相关(P < 0.05),miR-196b基因与各蛋白表达呈现不同程度负相关(P < 0.05);⑤结果提示,骨髓间充质干细胞移植可一定程度上改善薄型子宫大鼠内膜厚度及相关蛋白水平,可能原因为miR-196b负性调节HOXA10基因,HOXA10基因进一步促进血管内皮生长因子、白血病抑制因子及整合素αvβ3蛋白的表达有关。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0002-9125-8239(王一飞)

关键词: 薄型子宫内膜, 骨髓间充质干细胞, 子宫内膜厚度, miR-196b, 血管内皮生长因子, 白血病抑制因子, 整合素αvβ3, 广东省自然科学基金

Abstract:

BACKGROUND: Thin endometrial diseases are a challenge in clinical treatment at present. Scholars have found that bone marrow mesenchymal stem cells (BMSCs) transplantation has its unique curative effect and advantages, but few studies have been conducted on pathway or gene control.
OBJECTIVE: To observe the effect of BMSCs transplantation in rats with thin endometrium based on the HOXA10 regulatory network. 
METHODS: Twenty-one adult female Sprague-Dawley rats of SPF grade (provided by the Animal Experimental Center, Guangzhou University of Chinese Medicine in China) were randomly divided into three groups (n=7/group): control group, model group, and BMSCs group. In the latter two groups, a thin endometrium model was prepared in each rat by filling the uterine cavity with 95% ethanol. In the control group, normal saline was injected to fill the uterine cavity of rats. After extraction of ethanol or normal saline, the rats in the BMSCs group were injected intrauterinely with 1 mL of BMSCs suspension (1×1010 cells/L), and those in the control and model groups were given the same volume of normal saline. After two estrous cycles, the uterus of each rat was removed. Hematoxylin-eosin staining was used to measure the thickness of the endometrium. Immunohistochemistry was used to detect the expression of vimentin, keratin, vascular endothelial growth factor, leukemia inhibitory factor and integrin αvβ3. qRT-PCR was used to detect the relative transcription of HOXA10 and miR-196b.
RESULTS AND CONCLUSION: (1) Compared with the control group, the endometrial thickness of the rats were significantly thinner in the model and BMSCs groups (P < 0.05), while the endometrial thickness in the BMSCs group was thicker than that in the model group (P < 0.05). (2) The mean absorbance values of endometrial vimentin, keratin, vascular endothelial growth factor, leukemia inhibitory factor and integrin αvβ3 were highest in the control group, higher in the BMSCs group and lowest in the model group, and there were significant differences between groups (P < 0.05). (3) The relative transcript level of HOXA10 gene in the model and BMSCs group was significantly lower than that in the control group, while the relative transcript level of HOXA10 gene in the BMSCs group was significantly higher than that in the model group (P < 0.05). The relative transcript level of miR-196b in the model and BMSCs groups was significantly higher than that in the control group (P < 0.05), while the relative transcript level of miR-196b in the BMSCs group was lower than that in the model group (P < 0.05). (4) HOXA10 was negatively correlated with miR-196b gene, HOXA10 was positively correlated with the protein expression to different extents, and miR-196b gene was negatively correlated with the protein expression to different extents. These findings suggest that BMSCs transplantation can improve the endometrial thickness and relevant protein levels of thin endometrium rats to some extent, which may be attributed to the negative regulation of HOXA10 gene by miR-196b, and HOXA10 gene further promotes the expression of vascular endothelial growth factor, leukemia inhibitory factor and integrin αvβ3 proteins.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Endometrium, Bone Marrow, Mesenchymal Stem Cell Transplantation, Vascular Endothelial Growth Factors, Leukemia Inhibitory Factor, Integrin alphaVbeta3, Tissue Engineering

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