首页> 中文期刊> 《微生物学通报》 >沙眼衣原体分泌性蛋白Pgp3滴鼻免疫增强小鼠对衣原体生殖道感染的保护作用

沙眼衣原体分泌性蛋白Pgp3滴鼻免疫增强小鼠对衣原体生殖道感染的保护作用

         

摘要

[Objective] To validate the immune protective efficacy of Chlamydia secretion protein Pgp3 and to analyze the potential immune mechanisms related to this protection. [Methods] The prokaryotic recombinant protein Pgp3 was purified and evaluated for its protective efficacy in a genital tract infected mouse model. Groups of BALB/c mice were immunized intranasally or intramuscularly with adjuvants plus Pgp3 protein or PBS and GST control. Humoral and cellular immune responses were evaluated. After Chlamydia muridarum in-travaginal challenge, the chlamydia shedding from the lower genital tract and the chlamy-dia-induced upper genital tract gross pathology and histopathological characterization were also detected. [Results] Adjuvant plus Pgp3 immunization can induce high level of Pgp3 specific antibody as well as IFN-γ, IL-17 and IL-5 cytokine production. More importantly, intra-nasal immunization compare with intramuscular route induced more Thl-dominant immunity that significantly reduced the shedding of live organisms from the lower genital tract and attenuated inflammatory pathologies in the oviduct tissues. [Conculsion] These observations have demonstrated that secretion protein Pgp3 intranasal immunization can induce protective immunity against chlamydial infection and pathology in mice.%[目的]探讨不同免疫途径沙眼衣原体(Chlamydia trachomatis,Ct)分泌性蛋白Pgp3的免疫保护效果,分析其可能的保护机制,以确定Pgp3蛋白疫苗在Ct疫苗研制中的应用价值.[方法]分泌性蛋白Pgp3经滴鼻或肌注途径免疫雌性Balb/c小鼠,免疫60 d后,阴道接种鼠沙眼衣原体(Chlamydia muridarum,Cm)建立生殖道感染动物模型,在该模型中评价Pgp3蛋白疫苗抗Cm感染的保护效果,并探讨其机制.[结果]滴鼻或肌注免疫后,小鼠血清及生殖道中检测到了特异性抗体;小鼠脾淋巴细胞产生IFN-γ、IL-17及IL-5水平均明显高于对照组,且滴鼻免疫组IFN-γ水平升高较肌注组更显著(P<0.05);Pgp3蛋白滴鼻免疫组小鼠经Cm生殖道感染后,阴道带菌时间明显缩短,输卵管病理改变轻而肌注免疫组其保护作用不明显.[结论]Pgp3蛋白经滴鼻免疫可有效诱导小鼠产生明显的抗Cm保护效应.其可能的免疫保护机制与诱导Th1型为主的细胞免疫应答及高效价的特异性抗体有关,提示Pgp3蛋白疫苗具有潜在的疫苗研究与开发价值.

著录项

  • 来源
    《微生物学通报》 |2012年第2期|226-236|共11页
  • 作者单位

    南华大学微生物与免疫学教研室 湖南衡阳421001;

    南华大学微生物与免疫学教研室 湖南衡阳421001;

    南华大学肿瘤研究所 湖南衡阳 421001;

    南华大学微生物与免疫学教研室 湖南衡阳421001;

    南华大学微生物与免疫学教研室 湖南衡阳421001;

    Department of Microbiology and Immunology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, Texas 78229, USA;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类
  • 关键词

    沙眼衣原体; Pgp3; 蛋白疫苗; 免疫保护; Th1型免疫反应;

相似文献

  • 中文文献
  • 外文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号