中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (23): 3696-3701.doi: 10.3969/j.issn.2095-4344.2014.23.015

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

骨髓间充质干细胞移植治疗炎症性肠病小鼠结肠炎的有效性及肿瘤学安全性

何小文1,陈泽贤1,张珑涓2,何晓生1,练 磊1,柯 嘉1,林绪涛1,陈 曦1,吴小剑1,兰 平1   

  1. 1中山大学附属第六医院结直肠肛门外科,广东省广州市 510655;2中山大学附属第一医院普通外科实验室,广东省广州市 510080
  • 修回日期:2014-05-08 出版日期:2014-06-04 发布日期:2014-06-04
  • 通讯作者: 张珑涓,主管技师,中山大学附属第一医院普通外科实验室,广东省广州市 510080
  • 作者简介:何小文,男,1978年生,湖北省荆门市人,汉族,2009年中山大学毕业,博士,主治医师,主要从事炎症性肠病的基础和临床研究。 共同第一作者:陈泽贤,男,1988年生,广东省汕头市人,汉族,中山大学在读硕士,主要从事炎症性肠病的基础研究。
  • 基金资助:

    国家自然科学基金资助项目(81300367,81200332);广东省自然科学基金资助项目(S2013010014186)

Efficacy and oncological safety of bone marrow mesenchymal stem cell transplantation for colitis in inflammatory bowel disease models in mice

He Xiao-wen1, Chen Ze-xian1, Zhang Long-juan2, He Xiao-sheng1, Lian Lei1, Ke Jia1, Lin Xu-tao1, Chen Xi1, Wu Xiao-jian1, Lan Ping1   

  1. 1Department of Colorectal and Anal Surgery, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong Province, China; 2Laboratory of General Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China
  • Revised:2014-05-08 Online:2014-06-04 Published:2014-06-04
  • Contact: Zhang Long-juan, Technician-in-charge, Laboratory of General Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China
  • About author:He Xiao-wen, M.D., Surgeon, Department of Colorectal and Anal Surgery, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong Province, China Chen Ze-xian, Studying for master’s degree, Department of Colorectal and Anal Surgery, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong Province, China He Xiao-wen and Chen Ze-xian contributed equally to this article.
  • Supported by:

     the National Natural Science Foundation of China, No. 81300367, 81200332; the Guangdong Provincial Natural Science Foundation, No. S2013010014186

摘要:

背景:骨髓间充质干细胞输注有望成为临床治疗炎症性肠病的新的有效生物治疗手段,但其肿瘤学安全性问题令人担忧,是决定间充质干细胞能否广泛用于炎症性肠病治疗的关键,亟待研究。

目的:利用小鼠模型观察骨髓间充质干细胞输注对炎症性肠病结肠炎的疗效,并明确间充质干细胞对炎症性肠病炎症癌变的影响。
方法:应用葡聚糖硫酸钠构建Balb/c(H-2d)小鼠的实验性结肠炎模型,经尾静脉输注分离培养的同系基因型骨髓间充质干细胞,对比观察间充质干细胞的疗效并评价结肠炎的组织病理学改善情况;应用葡聚糖硫酸钠联合偶氮氧甲烷构建Balb/c(H-2d)小鼠的结肠炎癌变模型,对比观察间充质干细胞输注后小鼠肠道肿瘤的形成情况。

结果与结论:在葡聚糖硫酸钠结肠炎模型,骨髓间充质干细胞组在实验结束时体质量丧失、大便潜血较PBS组均有减轻;间充质干细胞组中结肠组织炎症损伤严重度评分更低,镜下小鼠远端结肠黏膜结构基本完整,有小范围上皮缺损或隐窝缺损,黏膜层和黏膜下层较多炎症细胞浸润,可见毛细血管和小血管增生;体内示踪可见输注的间充质干细胞向结肠炎症病灶处黏膜下层归巢定殖。在葡聚糖硫酸钠/偶氮氧甲烷结肠炎癌变模型,间充质干细胞组小鼠肠道肿瘤数量及肿瘤负荷均明显小于对照组。结果提示输注骨髓间充质干细胞能明显改善炎症性肠病小鼠的结肠炎症病变,并抑制结肠炎向肿瘤的恶性转化,为间充质干细胞治疗炎症性肠病的生物安全性提供了客观的理论依据。


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


全文链接:

关键词: 干细胞, 移植, 骨髓间充质干细胞, 炎症性肠病}, 结肠炎, 癌变, 恶性转化, 治疗, 生物安全性, 国家自然科学

Abstract:

BACKGROUND: Transfusion of bone marrow mesenchymal stem cells may become a novel and effective biological therapy for inflammatory bowel disease in clinical practice. Nevertheless, the oncological safety of the treatment is worrisome, and is a key to determine whether mesenchymal stem cells can be widely used in treatment of inflammatory bowel disease, and deserves further investigation.

OBJECTIVE: To evaluate the therapeutic effect of bone marrow mesenchymal stem cell transfusion against inflammatory bowel disease in mouse models, and to clarify the effects of mesenchymal stem cells on tumorigenesis of inflammatory bowel disease.
METHODS: Mouse model of colitis was established using Balb/c (H-2d) mice exposed to dextran sulfate sodium. Syngeneic bone marrow mesenchymal stem cells were transfused into mouse model through caudal vein. The therapeutic effect of mesenchymal stem cells was compared and observed, and pathological remission of colitis was evaluated. Mouse model of colitis-driven colon carcinogenesis was established using Balb/c (H-2d) mice exposed to dextran sulfate sodium and azoxymethane. Tumor formation within the murine colon was compared and observed after transfusion of mesenchymal stem cells.

RESULTS AND CONCLUSION: In models of dextran sulfate sodium-induced colitis, weight loss and fecal occult blood were lessened in the bone marrow mesenchymal stem cell group compared with the phosphate buffered saline group. Histological damage score of colitis was less in the bone marrow mesenchymal stem cell group: mucosal structure of distal colon was almost intact under microscope, and there was small area of epithelial defects and cryptal defects. Inflammatory cell infiltration, proliferation of capillary and small vessels could be observed in mucosa and submucosa. Homing and colonization of mesenchymal stem cells in submucosa of inflamed colon could also be observed by in vivo tracing. In the dextran sulfate sodium/azoxymethane model of colitis-driven colon carcinogenesis, the number of intestinal tumors and tumor load were obviously less in the bone marrow mesenchymal stem cell group than in the control group. Results indicated that transfusion of bone marrow mesenchymal stem cells can apparently improve colitis lesions of mice with inflammatory bowel disease and inhibit carcinogenesis of colitis, which may provide theoretical support for the biological safety of mesenchymal stem cells transplantation for inflammatory bowel disease.


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


全文链接:

Key words: colitis, neoplasms, gastrointestinal neoplasms, mesenchymal stem cells, mesenchymal stem cell transplantation

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