中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (17): 2644-2649.doi: 10.3969/j.issn.2095-4344.0885

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

剖宫产手术不影响孕鼠体内骨髓间充质干细胞的归巢

沙文琼,折瑞莲,王硕石,王 倩,许 曼,石 苇,李 岚   

  1. 暨南大学附属第二临床医学院(深圳市人民医院)产科,广东省深圳市 518020
  • 修回日期:2018-05-07 出版日期:2018-06-18 发布日期:2018-06-18
  • 通讯作者: 折瑞莲,硕士,主任医师,深圳市人民医院产科,广东省深圳市 518020
  • 作者简介:沙文琼,女,1980年生,河北省秦皇岛市人,博士,副主任医师,主要从事胎盘病理学和胎盘、脐带间充质干细胞研究。
  • 基金资助:

    深圳市科技计划(JCYJ20140416122811918)

Cesarean section has no impact on bone marrow mesenchymal stem cell homing in pregnant rats

Sha Wen-qiong, She Rui-lian, Wang Shuo-shi, Wang Qian, Xu Man, Shi Wei, Li Lan   

  1. Department of Obstetrics, Second Clinical Medical College of Jinan University (Shenzhen People’s Hospital), Shenzhen 518020, Guangdong Province, China
  • Revised:2018-05-07 Online:2018-06-18 Published:2018-06-18
  • Contact: She Rui-lian, Master, Chief physician, Department of Obstetrics, Second Clinical Medical College of Jinan University (Shenzhen People’s Hospital), Shenzhen 518020, Guangdong Province, China
  • About author:Sha Wen-qiong, M.D., Associate chief physician, Department of Obstetrics, Second Clinical Medical College of Jinan University (Shenzhen People’s Hospital), Shenzhen 518020, Guangdong Province, China
  • Supported by:

    the Science and Technology Research Plan of Shenzhen City, No. JCYJ20140416122811918

摘要:

文章快速阅读:

文题释义:
归巢:
是指移植入宿主体内的干细胞入血后,穿过血管内皮,停留到各个组织内的过程。间充质干细胞也具有归巢的行为特征,并且可归巢至受损伤部分,参与创面愈合或分化成靶组织细胞,替代损伤细胞。
SRY-PCR:SRY基因是雄性的性别决定基因。此次研究中体外培养雄性大鼠骨髓间充质干细胞,经尾静脉注射入雌性大鼠体内,雌性大鼠处死后,通过RT-PCR技术检测组织中SRY基因含量,间接反映了组织中雄性大鼠骨髓间充质干细胞的存留量。

 

摘要
背景:
剖宫产术后远期并发症(前置胎盘、胎盘植入、瘢痕处妊娠、子宫破裂)危及孕产妇生命,剖宫产术切口瘢痕处的子宫内膜及平滑肌缺损、蜕膜形成不良可能是主要病因。间充质干细胞具有修复组织损伤的功能,归巢于损伤部位的细胞量有可能影响组织修复的效果。
目的:在大鼠剖宫产手术模型中探讨间充质干细胞输入后在体内的分布、归巢情况。
方法:体外分离雄性大鼠骨髓间充质干细胞并鉴定。取雌性Wistar大鼠随机分为2组:剖宫产手术组大鼠于受孕第21天进行剖宫产术,术后即时经尾静脉注射制备好的雄性大鼠间充质干细胞;对照组大鼠自然分娩后即注射等量雄性大鼠间充质干细胞。分别于注射后第7,28天处死大鼠,通过SRY-PCR技术检测其心、肺、肝、肾、以及子宫瘢痕组织中SRY基因含量,间接反映组织中雄性大鼠骨髓间充质干细胞的存留量及相对分布水平。
结果与结论:剖宫产手术组细胞注射后第7天,SRY基因在肺组织中含量最高,其次是肝,在肾组织中也有一定量的分布,而在心脏和子宫瘢痕处的SRY基因含量较少;注射后第28天SRY基因在肺、肝和肾中的含量均有一定程度的下降(P < 0.05),而在心脏和子宫瘢痕处,SRY基因的含量未见显著变化(P > 0.05)。非手术对照组注射后第7,28天SRY基因的检测结果和剖宫产手术组基本一致,心脏和子宫组织的SRY基因含量均较低。结果提示:异体骨髓间充质干细胞进入大鼠体内主要分部于血流丰富的肺、肝、肾组织,并且随着时间干细胞量逐渐减少;心脏和子宫组织中的骨髓间充质干细胞数量较少,随时间变化不明显。剖宫产手术损伤并没有影响骨髓间充质干细胞在孕鼠体内的分布,也没有增加骨髓间充质干细胞在子宫手术瘢痕处的归巢和定植。

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:
0000-0003-2520-9217(沙文琼)

关键词: 剖宫产术, 骨髓间充质干细胞, 归巢, SRY基因, 组织修复, 干细胞

Abstract:

BACKGROUND: Long-term complications of cesarean section include placenta praevia, placenta accreta, cesarean scar pregnancy and uterine rupture. These life-threatening complications in pregnant women maybe result from the defects of endometrium and uterine smooth muscle as well as poorly formed decidua in the scar of cesarean section. Mesenchymal stem cells have the function of repairing tissue injuries, and the amount of cells homing to the site of injury may affect the effect of tissue repair.
OBJECTIVE: To explore the distribution and homing of bone marrow mesenchymal stem cells from male rats into rat models of cesarean section.
METHODS: Bone marrow mesenchymal stem cells isolated from male rats in vitro were cultured and identified. Female Wistar rats were randomized into two groups: cesarean section group and control group. Rats in the cesarean section group were given intravenous administration of bone marrow mesenchymal stem cells from male rats via the tail vein on day 21 after cesarean section, and non-operative rats in the control groups were given the same amount of bone marrow mesenchymal stem cells from male rats after natural delivery. Rats in the two groups were sacrificed on days 7 and 28 after cell injection. The distribution of bone marrow mesenchymal stem cells from male rats in tissues (including heart, lungs, livers, kidneys, and uterine scar) was detected by measurement of the SRY mRNA level using SPY-PCR.
RESULTS AND CONCLUSION: In the cesarean section group, the SRY gene was most abundant in the lung, followed by the liver and the kidney on day 7 after injection, although the distribution of SRY gene in the heart and uterine scar was low; on day 28 after injection, the levels of SRY gene in the lung, liver and kidney decreased (P < 0.05), but had no significant changes in the heart and uterine scar (P > 0.05). In the control group, the distribution of SRY gene was similar to that in the cesarean section group on both days 7 and 28 after injection, and the levels of SRY gene in the heart and uterus were low. These findings reveal that allogeneic bone marrow mesenchymal stem cells implanted mainly distribute in tissues with abundant blood flow, including lungs, livers and kidneys. And the cell number decreases gradually over time. Since the amount of implanted cells in the heart and uterus is very low, the change with time is not obvious. Cesarean section injury has no impact on the distribution of bone marrow mesenchymal stem cells in pregnant rats and there is of course no increase in the homing and colonization of bone marrow mesenchymal stem cells in a cesarean scar.

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: Mesenchymal Stem Cell Transplantation, Cesarean Section, Genes, sry, Stem Cells

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