中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (28): 4123-4129.doi: 10.3969/j.issn.2095-4344.2016.28.003

• 脐带脐血干细胞 umbilical cord blood stem cells • 上一篇    下一篇

人脐带间充质干细胞肌肉注射健康大鼠心肌组织微血管及胶原纤维的表达

郭玉秀1,2,王思平1,3,张文祥1,4,毛成刚1,高  宏5,李自普1   

  1. 1青岛大学附属医院,山东省青岛市  266003
    2潍坊市妇幼保健院,山东省潍坊市  261000
    3滕州市人民医院儿科,山东省滕州市  277500
    4青岛市妇女儿童医学中心,山东省青岛市  266000
    5青岛奥克生物开发有限公司,山东省青岛市  266000
  • 修回日期:2016-05-10 出版日期:2016-07-01 发布日期:2016-07-01
  • 通讯作者: 李自普,博士,教授,博士生导师,青岛大学附属医院,山东省青岛市 266003
  • 作者简介:郭玉秀,女,1986年生,山东省高密市人,汉族,2013年青岛大学医学院毕业,硕士,医师,主要从事儿童心血管疾病方面的研究。
  • 基金资助:

    青岛市公共领域科技支撑计划项目[11-2-3-1-(4)-nsh]

Effects of human umbilical cord mesenchymal stem cells via intramuscular injection on the myocardial micrangium and collagen expression in normal rats

Guo Yu-xiu1, 2, Wang Si-ping1, 3, Zhang Wen-xiang1, 4, Mao Cheng-gang1, Gao Hong5, Li Zi-pu1   

  1. 1Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, China
    2Weifang Maternity and Child Hospital, Weifang 261000, Shandong Province, China
    3Department of Pediatrics, People’s Hospital of Tengzhou, Tengzhou 277500, Shandong Province, China
    4Qingdao Women and Children’s Medical Center, Qingdao 266000, Shandong Province, China
    5Qingdao Aoke Biological Development Co., Ltd., Qingdao 266000, Shandong Province, China
  • Revised:2016-05-10 Online:2016-07-01 Published:2016-07-01
  • Contact: Li Zi-pu, M.D., Professor, Doctoral supervisor, Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, China
  • About author:Guo Yu-xiu, Master, Physician, Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong Province, China; Weifang Maternity and Child Hospital, Weifang 261000, Shandong Province, China
  • Supported by:

    the Public Technology Support Program of Qingdao City, No. 11-2-3-1-(4)-nsh

摘要:

文章快速阅读:

文题释义:
CD34:
是微血管内皮细胞特异性标记物,免疫组织化学染色阳性微血管呈棕黄色,与周围组织界限清晰,便于识别,并能较好地区分大血管与微血管。
脐带间充质干细胞:来源于脐带羊膜上皮和脐血管之间或脐血管之间的结缔组织基质,来源丰富,取材方便,无道德伦理问题,在不同诱导条件下向心肌细胞、成软骨细胞、成骨细胞、平滑肌细胞、脂肪细胞、神经细胞、骨骼肌细胞、血管内皮细胞等方向分化,具有增殖能力强、低免疫原性、免疫调节等优点。

 

摘要
背景:
目前关于肌肉注射脐带间充质干细胞能否引起心脏异位病理性血管形成及是否增加胶原纤维合成促进心肌纤维化尚不明确。
目的:探讨肌肉注射人脐带间充质干细胞对健康Wistar大鼠心肌组织微血管及胶原纤维合成的影响。
方法:健康雄性Wistar大鼠60只,随机分为正常组、培养液组、上清液组、低剂量组、中剂量组、高剂量组6组,每组10只;各组于饲养第2周分别在大鼠四肢肌肉内注射PBS(人脐带间充质干细胞悬浮液)、DMEM液(人脐带间充质干细胞培养液)、人脐带间充质干细胞培养的上清液、人脐带间充质干细胞0.25×105个、人脐带间充质干细胞1.0×105个和人脐带间充质干细胞4.0×105个。肌肉注射4周后再次注射1次,剂量和部位同上。于第2次肌肉注射后4周处死大鼠,取左心室肌制作病理切片,免疫组织化学法检测大鼠心肌微血管密度,Masson染色法检测心肌组织胶原纤维的表达。
结果与结论:①实验期间大鼠反应灵敏,活动、饮食正常,尿便正常,体质量增长良好,毛发色泽正常,未出现懒动、姿势运动异常等改变,注射部位无脱毛、红肿、溃疡、硬结形成等,各组大鼠均未见死亡;②CD34染色显示各组心肌组织微血管均呈强阳性表达;③Masson染色显示各组心肌组织胶原纤维均呈阳性表达;④各组间微血管密度及胶原纤维表达差异无显著性意义(F=0.110和0.585,P > 0.05);⑤结果表明,肌肉注射人脐带间充质干细胞及其培养上清液对健康大鼠心肌组织微血管及胶原纤维表达无明显影响。

 

 

ORCID:0000-0003-4067-5347(李自普)

关键词: 干细胞, 脐带脐血干细胞, 脐带间充质干细胞, 微血管, 胶原纤维, 肌肉注射, 大鼠

Abstract:

BACKGROUND: To date, it is still unclear whether the intramuscular injection of heterogeneous umbilical cord mesenchymal stem cells (UC-MSC) can cause cardiac ectopic pathological angiogenesis as well as increase collagen synthesis to promote myocardial fibrosis.
OBJECTIVE: To explore the effects of intramuscular injection of human UC-MSCs on myocardial micrangium and collagen expression in normal Wistar rats.
METHODS: After 2 weeks of feeding, 60 male SPF Wistar rats were randomly assigned to receive intramuscular injection of PBS (normal group), DMEM (culture medium group), human UC-MSCs supernatant (supernatant group), 0.25×105, 1.0×105, 4.0×105 human UC-MSCs (low-, moderate- and high-dose groups), respectively (n=10 per group). All the rats were subjected to second injection (same dose) at 4 weeks after first intramuscular injection. Then, the rats were killed under anesthesia at 4 weeks after second injection, to take heart tissues from the left ventricle for pathological observation, immunohistochemical examination and Masson staining.
RESULTS AND CONCLUSION: No alteration of the response, activity, victualage, faeces, weight growth, and fur was found, and there was no death in rats during the experiment. All the rats had no symptoms of molt, inflammation, skin ulcer, scleroma. Strong positive expression of CD34 for the micrangium in the myocardial tissue was observed, and positive expression of the collagen in the myocardial tissue observed by Masson staining. There were no significant differences in the microvessel density and collagen expression in the myocardium among the groups (F=0.110 and 0.585, P > 0.05). To conclude, hUC-MSCs or its supernatant via intramuscular injection has no effect on the micrangium and collagen expression in normal rats.

 

 

Key words: Umbilical Cord, Mesenchymal Stem Cell Transplantation, Injections, Intramuscular, Microvessels, Tissue Engineering

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