中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (25): 4013-4017.doi: 10.12307/2024.190

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

Lewis大鼠骨髓来源成熟和未成熟树突状细胞的提取与鉴别

李立强1,2,李明皓2,李  良1,李文波1,张  军1,孔令梅1   

  1. 1合肥市第二人民医院肝胆外科/安徽医科大学附属合肥医院肝胆外科/蚌埠医学院附属合肥市第二人民医院教学医院,安徽省合肥市   230011;2宁夏回族自治区人民医院肝胆外科,宁夏回族自治区银川市   750002
  • 收稿日期:2023-06-20 接受日期:2023-08-17 出版日期:2024-09-08 发布日期:2023-11-23
  • 通讯作者: 张军,硕士,副主任医师,合肥市第二人民医院肝胆外科/安徽医科大学附属合肥医院肝胆外科/蚌埠医学院附属合肥市第二人民医院教学医院,安徽省合肥市 230011 李明皓,博士,主任医师,宁夏回族自治区人民医院肝胆外科,宁夏回族自治区银川市 750002
  • 作者简介:李立强,男,1992年生,安徽省定远县人,2021年宁夏医科大学毕业,硕士,主治医师,主要从事肝移植的免疫耐受研究。 李良,男,1966年生,安徽省定远县人,1989年蚌埠医学院毕业,主任医师,主要从事肝胆的免疫耐受及胃癌的分子学机制研究。
  • 基金资助:
    国家自然科学基金地区基金(81560114),项目负责人:李明皓;宁夏自然科学基金(2021AAC03308),项目负责人:
    李明皓;蚌埠医学院科技项目自然科学重点项目(2022byzd200),项目负责人:张军;蚌埠医学院科技项目自然科学重点项目(2022byzd199),项目负责人:李良

Extraction and differentiation of mature and immature dendritic cells from Lewis rat bone marrow

Li Liqiang1, 2, Li Minghao2, Li Liang1, Li Wenbo1, Zhang Jun1, Kong Lingmei1   

  1. 1Department of Hepatobiliary Surgery, Second People’s Hospital of Hefei/Department of Hepatobiliary Surgery, Hefei Hospital Affiliated to Anhui Medical University/Teaching Hospital of Second People’s Hospital of Hefei Affiliated to Bengbu Medical College, Hefei 230011, Anhui Province, China; 2Department of Hepatobiliary Surgery, People’s Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, Ningxia Hui Autonomous Region, China
  • Received:2023-06-20 Accepted:2023-08-17 Online:2024-09-08 Published:2023-11-23
  • Contact: Zhang Jun, Master, Associate chief physician, Department of Hepatobiliary Surgery, Second People’s Hospital of Hefei/Department of Hepatobiliary Surgery, Hefei Hospital Affiliated to Anhui Medical University/Teaching Hospital of Second People’s Hospital of Hefei Affiliated to Bengbu Medical College, Hefei 230011, Anhui Province, China Li Minghao, MD, Chief physician, Department of Hepatobiliary Surgery, People’s Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, Ningxia Hui Autonomous Region, China
  • About author:Li Liqiang, Master, Attending physician, Department of Hepatobiliary Surgery, Second People’s Hospital of Hefei/Department of Hepatobiliary Surgery, Hefei Hospital Affiliated to Anhui Medical University/Teaching Hospital of Second People’s Hospital of Hefei Affiliated to Bengbu Medical College, Hefei 230011, Anhui Province, China; Department of Hepatobiliary Surgery, People’s Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, Ningxia Hui Autonomous Region, China Li Liang, Chief physician, Department of Hepatobiliary Surgery, Second People’s Hospital of Hefei/Department of Hepatobiliary Surgery, Hefei Hospital Affiliated to Anhui Medical University/Teaching Hospital of Second People’s Hospital of Hefei Affiliated to Bengbu Medical College, Hefei 230011, Anhui Province, China
  • Supported by:
    Regional Fund of National Natural Science Foundation of China, No. 81560114 (to LMH); Ningxia Natural Science Foundation, No. 2021AAC03308 (to LMH); Natural Science Key Project of Science and Technology Project of Bengbu Medical College, No. 2022byzd200 (to ZJ); Natural Science Key Project of Science and Technology Project of Bengbu Medical College, No. 2022byzd199 (to LL)

摘要:


文题释义:

树突状细胞:它在体内具有极强的免疫抗原提呈功能,特别是树突状细胞处于未成熟状态下,主要通过组织相容性复合体捕获、处理抗原并将抗原递呈给初始T细胞,以激活抗原特异性的细胞免疫反应。
混合淋巴细胞反应:在具有抗原提呈功能的树突状细胞刺激下,T细胞发生增殖和活化,根据淋巴细胞反应的强度来评价组织相容性抗原差异和对异体细胞的反应能力。


背景:树突状细胞在未成熟阶段表现出极强的抗原吞噬功能,它可以在免疫耐受、癌症的免疫治疗等方面都表现出极大的优越性。但由于未成熟树突状细胞在生物体内含量极微,这就严重限制了它在临床、科研方面的应用。

目的:提取鉴别Lewis大鼠骨髓来源成熟和未成熟树突状细胞。
方法:从Lewis大鼠骨髓中分离骨髓前体细胞,应用20 ng/mL粒细胞集落刺激因子、10 ng/mL白细胞介素4培养7 d诱导为未成熟树突状细胞,然后在未成熟树突状细胞中加入1 μg/mL脂多糖继续培养2 d诱导为成熟树突状细胞。采用荧光倒置显微镜观察树突状细胞形态,流式细胞仪鉴定成熟和未成熟树突状细胞表面特异性分子,ELISA检测成熟和未成熟树突状细胞培养上清白细胞介素10、白细胞介素12和白细胞介素17A因子的分泌水平,混合淋巴细胞反应检测成熟和未成熟树突状细胞对T淋巴细胞的刺激反应。

结果与结论:①普通荧光倒置显微镜下观察树突状细胞具有明显的突起结构;②流式细胞仪可见未成熟树突状细胞低表达CD40、CD86等共刺激分子;相反,成熟树突状细胞高表达上述共刺激分子;③未成熟树突状细胞的白细胞介素10、白细胞介素17A分泌水平要远高于成熟树突状细胞(P < 0.01);未成熟树突状细胞的白细胞介素12分泌水平低于成熟树突状细胞(P < 0.05);④成熟树突状细胞对T细胞的刺激明显比成熟树突状细胞强,当成熟树突状细胞与T淋巴细胞比例达到1∶10时刺激能力更强;⑤结果表明:Lewis大鼠骨髓前体细胞可以分化为树突状细胞,通过流式细胞鉴定、相关因子检测、混合淋巴细胞反应能够鉴别树突状细胞的成熟和未成熟状态。

https://orcid.org/0000-0001-8856-1387 (李立强) 

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

关键词: 树突状细胞, 未成熟树突状细胞, 成熟树突状细胞, 细胞因子, 混合淋巴细胞反应

Abstract: BACKGROUND: Dendritic cells exhibit extremely strong antigen phagocytic function in the immature stage, and they can demonstrate great advantages in immune tolerance, cancer immunotherapy, and other aspects. However, due to the extremely low content of immature dendritic cells in living organisms, its clinical and scientific applications are severely limited. 
OBJECTIVE: To study the extraction and identification of mature and immature dendritic cells from Lewis rat bone marrow. 
METHODS: Bone marrow precursor cells were isolated from the bone marrow of Lewis rats, and immature dendritic cells were induced by 20 ng/mL of granulocyte colony-stimulating factor and 10 ng/mL of interleukin-4 for 7 days, and then mature dendritic cells were induced by adding 1 μg/mL of lipopolysaccharide to immature dendritic cells for 2 days. The morphology of dendritic cells was observed using inverted fluorescence microscopy. The surface-specific molecules of mature and immature dendritic cells were identified by flow cytometry, and the secretion levels of supernatant interleukin-10, interleukin-12, and interleukin-17A in mature and immature dendritic cells were detected by ELISA. The response of mature and immature dendritic cells to T lymphocyte stimulation was measured by mixed lymphocyte reaction.
RESULTS AND CONCLUSION: (1) The dendritic cells showed an obvious protrusion structure under an ordinary inverted fluorescence microscope. (2) Flow cytometry showed low expression of CD40, CD86, and other co-stimulatory molecules in immature dendritic cells. On the contrary, mature dendritic cells highly expressed the above co-stimulatory molecules. (3) The secretion of interleukin-10 and interleukin-17A in immature dendritic cells was much higher than that in mature dendritic cells (P < 0.01). Interleukin-12 secretion in immature dendritic cells was much lower than that in mature dendritic cells (P < 0.05). (4) Mature dendritic cells stimulated T cells significantly better than immature dendritic cells, and the stimulation ability was stronger when the ratio of mature dendritic cells to T lymphocytes reached 1:10. (5) The results indicate that Lewis rat bone marrow precursor cells can differentiate into dendritic cells and distinguish between mature and immature dendritic cells by flow cytometry identification, related factor detection, and mixed lymphocyte reaction.

Key words: dendritic cell, immature dendritic cell, mature dendritic cell, cytokine, mixed lymphocyte reaction

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