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目的 探讨痢疾菌苗滴鼻免疫后,小鼠不同粘膜部位和其它部位免疫应答的影响。方法将Balb/c小鼠随机分为3组,每组15只。舰疾菌苗株 TIM-2117或 FS-5416,按 5×10~6、1×10~7、4×10~7和4×10~7CFU/只滴鼻跟 Balb/c小鼠4次涧隔两 wb。分离鼻相关淋巴组织(NALT)、鼻通道(NP)及脾、小肠的PP结淋巴细胞。一部分细胞采用流式细胞术检测淋巴细胞表型的变化;另一部分细胞与全菌破碎抗原共培养,于不同时间点取出,提取RNA做RT-PCR。结果两株菌苗经鼻内免疫后,NAL、NP和PP结的淋巴细胞中CD3T细胞显著增加,其中以CD4+T细胞增加为主。TSM-2117株免疫组的脾细胞中,B220+细胞显著增加;而FS-5416株免疫组的脾细胞中,CD3+T细胞显著增加。免疫小鼠的NALT、NP和PP结淋巴细胞,在体外经抗原刺激后,均在不同时间出现IFN-γ和IL-4mRNA的表达,TGF-β mRNA的表达在免疫前后无明显变化。结论痢疾菌苗经鼻粘膜免疫,可诱导不同粘膜部位及全身免疫应答的产生。
Objective To investigate the effect of dysentery vaccine on the immune response of different mucosal parts and other parts of mice after intranasal immunization. Methods Balb / c mice were randomly divided into three groups of 15. Ship disease vaccine strain TIM-2117 or FS-5416, according to 5 × 10 ~ 6, 1 × 10 ~ 7,4 × 10 ~ 7 and 4 × 10 ~ 7CFU / nasal drops with Balb / c mice 4 times stream Every two wb. Nasal-associated lymphoid tissue (NALT), nasal passages (NP), and PP-knot lymphocytes from the small intestine were isolated. A part of cells were detected by flow cytometry lymphocyte phenotype changes; the other part of the cells were co-cultured with whole-cell antigen, at different time points removed, RNA extraction for RT-PCR. Results After the two strains of mice were immunized intranasally, CD3 T cells were significantly increased in lymphocytes of NAL, NP and PP, with the increase of CD4 + T cells. The splenocytes of TSM-2117 immunized group showed a significant increase of B220 + cells, while the splenocytes of FS-5416 immunized group showed a significant increase of CD3 + T cells. Immunization of mice with NALT, NP and PP junction lymphocytes in vitro after antigen stimulation, IFN-γ and IL-4 mRNA expression at different times, TGF-β mRNA expression before and after immunization did not change significantly. Conclusion Dampness vaccine through nasal mucosal immunization, can induce different parts of mucosal and systemic immune response.