中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (32): 5120-5125.doi: 10.3969/j.issn.2095-4344.2014.32.007

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

γ型干扰素增强脂肪干细胞介导的免疫抑制

依里牙尔•依里哈木1,王云海1,王  理1,许新才1,艾木拉古丽•阿布拉2,张文斌1   

  1. 1新疆医科大学第一附属医院胃肠外科,新疆维吾尔自治区乌鲁木齐市  830000;2新疆师范大学生命科学学院,新疆维吾尔自治区乌鲁木齐市  830000
  • 收稿日期:2014-07-09 出版日期:2014-08-06 发布日期:2014-09-18
  • 通讯作者: 张文斌,博士,副主任医师,新疆医科大学第一附属医院胃肠外科,新疆维吾尔自治区乌鲁木齐市 830000
  • 作者简介:依里牙尔?依里哈木,男,1984年生,新疆维吾尔自治区人,新疆医科大学在读硕士,医师,主要从事消化道肿瘤研究。
  • 基金资助:

    新疆医科大学第一附属医院组织工程专项项目(201022GC02);新疆维吾尔自治区自然科学基金资助项目(2014211C036);国家临床重点专科-普通外科专业建设项目

Interferon-gamma enhances immunosuppression mediated by adipose-derived stem cells

Yiliyaer Yilihamu1, Wang Yun-hai1, Wang Li1, Xu Xin-cai1, Aimulaguli Abula2, Zhang Wen-bin1   

  1. 1Department of Gastrointestinal Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China; 2School of Life Science, Xinjiang Normal University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • Received:2014-07-09 Online:2014-08-06 Published:2014-09-18
  • Contact: Zhang Wen-bin, M.D., Associate chief physician, Department of Gastrointestinal Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • About author:Yiliyaer Yilihamu, Studying for master’s degree, Physician, Department of Gastrointestinal Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the Tissue Engineering Special Fund of the First Affiliated Hospital of Xinjiang Medical University, No. 201022GC02; the Natural Science Foundation of Xinjiang Uygur Autonomous Region, No. 2014211C036; the National Key Clinical Specialty: the Project of General Surgery

摘要:

背景:脂肪干细胞可以向成骨细胞和软骨细胞、平滑肌细胞、心肌细胞和神经细胞等分化。脂肪源性干细胞与间充质干细胞不但具有非常近似的生物学性质,而且在细胞表面标志谱的表达方面也十分接近。
目的:探索脂肪源性干细胞表面白细胞抗原Ⅱ类分子的表达以及其免疫原性和免疫调节作用,并探讨其具体机制是通过什么途径诱导的。
方法:分离培养脂肪源性干细胞,并用γ型干扰素刺激,然后用流式细胞术检测其表面免疫分子白细胞抗原Ⅱ的表达,实时荧光定量PCR和Western bolt分别检测吲哚胺-2,3-双加氧酶基因和蛋白的表达。脂肪源性干细胞单向刺激淋巴细胞,观察细胞增殖情况。淋巴细胞用植物血凝素刺激后,加入1×102-1×105脂肪源性干细胞,观察淋巴细胞增殖情况;同时,1×102-1×105脂肪源性干细胞作为“第三者”细胞加入混合双向淋巴细胞反应体系中,同样观察淋巴细胞增殖情况。
结果与结论:脂肪干细胞低表达白细胞抗原Ⅱ和吲哚胺-2,3-双加氧酶,但在γ型干扰素刺激后,白细胞抗原Ⅱ和吲哚胺-2,3-双加氧酶表达均明显上调。脂肪源性干细胞不能刺激淋巴细胞增殖,但能抑制植物血凝素或异体淋巴细胞导致的淋巴细胞增殖,且脂肪源性干细胞与混合淋巴细胞共培养的上清中检测到大量γ型干扰素的表达。提示脂肪干细胞具有低免疫原性,同时可在体外抑制淋巴细胞增殖反应,添加外源性γ型干扰素有助于脂肪源性干细胞发挥免疫抑制作用。


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, 脂肪干细胞, 免疫抑制, 脂肪源性干细胞, 吲哚胺-2, 3-双加氧酶, 植物血凝素, 白细胞抗原Ⅱ, 淋巴细胞增殖, 混合淋巴细胞反应, γ型干扰素, 新疆维吾尔自治区自然科学基金

Abstract:

BACKGROUND: Adipose stem cells can differentiate into bone cells, cartilage cells, smooth muscle cells, myocardial cells and nerve cells. Adipose-derived stem cells and mesenchymal stem cells have very similar biological properties, and they are also very close in terms of cell surface marker expression profile.
OBJECTIVE: To investigate the expression of human leukocyte antigen II in adipose-derived stem cells and its immunogenicity and immunomodulatory effect, and to explore the specific mechanism.
METHODS: After isolation and culture, the adipose-derived stem cells were stimulated with interferon-γ, and the expression of human leukocyte antigen II was detected by flow cytometry, the expression of indoleamine 2,3-dioxygenase was determined by real-time PCR and western blot. Adipose-derived stem cells were used to stimulate lymphocytes, and the cell proliferation was observed. The lymphocytes were stimulated with 
phytohemagglutinin, and then 1×102-1×105 adipose-derived stem cells were added to inhibit the proliferation; meanwhile, adipose-derived stem cells, a third party, at a dose of 1×102-1×105 were added to the ongoing two-way mixed lymphocyte reaction, and the cell number was calculated as count per minute.
RESULTS AND CONCLUSION: The expression of human leukocyte antigen II and indoleamine 2,3-dioxygenase was low in adipose-derived stem cells, but up-regulated with stimulation of interferon-γ. Adipose-derived stem cells could not stimulate lymphocyte proliferation, but could inhibit lymphocyte proliferation induced by phytohemagglutinin or allogeneic lymphocytes, and interferon-γ was highly expressed in the supernatant of co-culture of adipose-derived stem cells and mixed lymphocytes. These results indicate that the adipose-derived stem cells have low immunogenicity and can inhibit cell proliferation of lymphocytes in vitro, and the addition of exogenous interferon-γ can enhance the immunosuppressive effects of adipose-derived stem cells.


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: adipocytes, lymphocytes, immune tolerance, interferon-gamma, phytohemagglutinins

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