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吞噬凋亡淋巴细胞的树突状细胞诱导高分泌白细胞介素-10的调节性B细胞的生成 被引量:1

Dendritic cells phagocytized apoptotic lymphocytes induce the development of regulatory B cells with high secretion of interleukin-10
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摘要 目的探讨未成熟树突状细胞(imDC)吞噬经补骨脂素长波紫外线(PUVA)处理的小鼠脾B淋巴细胞(PUVA-SP)后,将B淋巴细胞诱导为高分泌白细胞介素(IL)-10(IL-10+)的调节性B细胞的可行性。方法培养小鼠骨髓来源DC,小鼠脾淋巴细胞经PUVA光源照射得到PUVA-SP,在体外将PUVA-SP与骨髓来源的imDC共同培养,后者吞噬PUVA-SP后形成PUVA-SP DC。应用CD19磁珠分选小鼠脾脏B淋巴细胞,将不同的DC与B淋巴细胞共同培养48 h。采用酶链免疫吸附试验(ELISA)检测B淋巴细胞、imDC、imDC+B淋巴细胞、PUVA-SP DC、PUVA-SP DC+B淋巴细胞的培养上清液中干扰素(IFN)-γ、转化生长因子(TGF)-β、IL-12p70、IL-10等细胞因子的含量。流式细胞仪分析B淋巴细胞、imDC+B淋巴细胞、mDC+B淋巴细胞、PUVA-SP DC+B淋巴细胞共培养后IL-10+调节性B细胞数量。结果与其他4组细胞培养液比较,PUVA-SP DC+B淋巴细胞上清液中的IL-10含量明显升高(均为P<0.05)。与其他各组相比,PUVA-SP DC+B淋巴细胞中IL-10+调节性B细胞数量明显增多。结论 PUVA-SP DC可以诱导脾脏B淋巴细胞分化为IL-10+调节性B细胞。 Objective To investigate the feasibility of immature dendritic cells (imDC)phagocytized psoralen ultraviolet A (PUVA)-treated splenic lymphocytes (PUVA-SP DC)in mice inducing B lymphocytes to be regulatory B cells (Breg)with high secretion of interleukin (IL)-10 (IL-10 +Breg). Methods Bone marrow-derived DC of mice was cultured. Spleen lymphocytes of mice were isolated and treated by PUVA,and turned to be PUVA-SP. The bone marrow-derived imDC was co-cultured with PUVA-SP in vitro to obtain PUVA-SP DC. Splenic B lymphocytes of mice were separated by anti-CD19 magnetic beads and co-cultured with different kinds of DC for 48 hours. The levels of interferon (IFN )-γ,transforming growth factor (TGF)-β,IL-12p70,and IL-10 in the culture supernatant of B lymphocytes,imDC,imDC+B lymphocytes, PUVA-SP DC and PUVA-SP DC +B lymphocytes were measured by enzyme-linked immune absorbent assay (ELISA). The accounts of IL-10 +Breg in B lymphocytes,imDC+B lymphocytes,mDC+B lymphocytes and PUVA-SP DC+B lymphocytes were detected by flow cytometry. Results Compared with the other 4 groups, the level of IL-10 in cell culture supernatant of PUVA-SP DC+B lymphocytes was significantly higher (all in P〈0.05). Compared with the other groups,the account of IL-10 +Breg in PUVA-SP DC+B lymphocytes was&amp;nbsp;significantly higher. Conclusions PUVA-SP DC can induce splenic B lymphocytes to differentiate into IL-10 +Breg.
机构地区 解放军第
出处 《器官移植》 CAS CSCD 2014年第4期237-241,共5页 Organ Transplantation
基金 国家自然科学基金(81370578)
关键词 树突状细胞 体外光化学方法 调节性B细胞 白细胞介素-10 Dendritic cell Photochemical method in vitro Regulatory B cell Interleukin-10
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参考文献9

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