中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (41): 6151-6157.doi: 10.3969/j.issn.2095-4344.2016.41.011

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

脐血间充质干细胞移植在卵巢癌化疗损伤中的作用

李  霞,王东晖,郭  亮   

  1. 沧州市中心医院妇一科,河北省沧州市  061001
  • 修回日期:2016-07-25 出版日期:2016-10-07 发布日期:2016-10-07
  • 作者简介:李霞,女,1984年生,河北省石家庄市人,汉族,2011年河北医科大学毕业,硕士,主治医师,主要从事妇产科研究。

Transplanting umbilical cord blood mesenchymal stem cells in ovarian cancer chemotherapy

Li Xia, Wang Dong-hui, Guo Liang   

  1. First Department of Gynecology, Cangzhou Central Hospital, Cangzhou 061001, Hebei Province, China
  • Revised:2016-07-25 Online:2016-10-07 Published:2016-10-07
  • About author:Li Xia, Master, Attending physician, First Department of Gynecology, Cangzhou Central Hospital, Cangzhou 061001, Hebei Province, China

摘要:

文章快速阅读:

文题释义:
紫杉醇化疗:
微管是真核细胞的一种组成成分,它是由两条类似的多肽(a和p)亚单位构成的微管二聚体形成的。在正常情况下,微管和微管蛋白二聚体之间存在动态平衡。紫杉醇可使二者之间失去这种动态平衡,诱导和促进微管蛋白聚合,防止解聚,稳定微管。这些作用导致细胞在进行有丝分裂时不能形成纺锤体和纺锤丝,抑制了细胞分裂和增殖,从而发挥抗肿瘤作用。
XIAP相关因子1凋亡抑制蛋白(XAF1):主要功能结构包括位于N端的7个锌指结构,它的主要作用是自身蛋白的结构或者与其他蛋白之间的结合,而C端结构则是XAF1发挥促凋亡作用的主要区域。XAF1蛋白定位于胞质和胞核内,不需要凋亡信号刺激即可与XIAP相互作用。体外研究证明XAF1可以阻止XIAP抑制caspase-3激活的作用。XAF1广泛表达于成人正常组织中,但在肿瘤细胞或肿瘤组织中低表达或不表达,提示XAF1可能具有抑制肿瘤生长的作用。

 

摘要
背景:
研究证实,脐血间充质干细胞对多种损伤细胞有修复功能。
目的:探讨脐血间充质干细胞移植在卵巢癌化疗性损伤中的作用。
方法:健康级成年雌性Wistar大鼠60只,随机分为正常对照组,损伤组及治疗组,每组20只。对照组不做任何处理,损伤组及治疗组建立大鼠卵巢癌化疗性损伤模型。模型成功后对照组尾静脉注射生理盐水,损伤组注射紫杉醇,治疗组在损伤组基础上给予脐血间充质干细胞移植。移植后2周,应用RT-PCR检测卵巢癌组织XAF1、Survivin mRNA的表达,Western blot检测卵巢癌组织中XAF1、Survivin蛋白的表达,TUNEL法检测卵巢癌细胞凋亡情况。
结果与结论:①与损伤组比较,治疗组肿瘤组织XAF1 mRNA和蛋白表达显著上调,凋亡抑制蛋白Survivin mRNA和蛋白表达显著下调(P < 0.05);②损伤组卵巢组织结构较对照组明显破坏,有大面积的出血坏死区域,治疗组损伤程度较损伤组明显减轻;③与损伤组比较,治疗组卵巢癌细胞凋亡率明显升高(P < 0.05);④结果表明,脐血间充质干细胞移植可以促进卵巢癌化疗性损伤大鼠卵巢组织的修复,XAF1、Survivin在肿瘤新生血管形成及卵巢癌细胞凋亡过程中发挥了作用。

 

 

关键词: 干细胞, 移植, 脐血间充质干细胞, 卵巢癌, 细胞凋亡, XAF1, Survivin, 化疗, 损伤

Abstract:

BACKGROUND: Existing evidence has confirmed that umbilical cord blood mesenchymal stem cells have an effect on functional recovery of a variety of damaged cells.
OBJECTIVE: To explore the effect of umbilical cord blood mesenchymal stem cell transplantation on ovarian cancer chemotherapy.
METHODS: Sixty healthy adult female Wistar rats were randomly divided into normal control group, damage group and treatment group (n=20/group). There was no treatment in the control group, and a rat model of ovarian cancer chemotherapy damage was made in the damage group and treatment group. After successful modeling, rats in the control group were given normal saline injection via the tail vein, and those in the damage and treatment groups were given paclitaxel chemotherapy and pacligaxel chemotherapy plus umbilical cord blood mesenchymal stem cell transplantation, respectively. After transplantation of 2 weeks, mRNA and protein expressions of XAF1 and Survivin in ovarian tumor tissues were detected by RT-PCR and western blot assay, respectively. Apoptosis in ovarian cancer cells were detected using TUNEL method.
RESULTS AND CONCLUSION: Compared with the damage group, a significant up-regulation of XAF1 mRNA and protein but a remarkable down-regulation of Survivin mRNA and protein were obtained in the treatment group (P < 0.05). A severe damage to the ovarian tissues was visible in the damage group, presenting with large hemorrhage and necrosis area. This damage was markedly reduced in the treatment group. Additionally, the apoptotic rate of ovarian cancer cells was significantly higher in the treatment group than the damage group (P < 0.05). All these findings indicate that umbilical cord blood mesenchymal stem cell transplantation aids in ovarian cancer chemotherapy to promote ovarian tissue repair in rats, and XAF1 and Survivin cannot be ignored in tumor angiogenesis and ovarian cancer cell apoptosis.

 

 

Key words: Cord Blood Stem Cell Transplantation, Ovarian Neoplasms, Antineoplastic Combined Chemotherapy Protocols, Apoptosis, Tissue Engineering

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