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首页> 外文期刊>The American Journal of Tropical Medicine and Hygiene >Seropositive Human Subjects Produce Interferon Gamma after Stimulation with Recombinant Cryptosporidium hominis gp15.
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Seropositive Human Subjects Produce Interferon Gamma after Stimulation with Recombinant Cryptosporidium hominis gp15.

机译:血清反应阳性的人类受试者用重组人隐孢子虫gp15刺激后产生干扰素γ。

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摘要

Cryptosporidiosis is an important cause of diarrhea worldwide. In normal hosts, infection is self-limited and associated with seroconversion and partial immunity to reinfection. Immunity is associated with interferon gamma (IFNgamma) production. Cryptosporidium surface proteins gp15 and gp40 are among the immunodominant proteins in terms of antibody responses. We asked the question of whether these antigens also stimulate production of IFNgamma in patients who have serologic evidence of prior infection. Whole blood from seropositive donors was stimulated with recombinant gp15 and gp 40 from Cryptosporidium hominis and Cryptosporidium parvum or His-tag controls. C. hominis gp15 stimulated increased production of IFNgamma. By contrast, there was no significant increase after stimulation with C. parvum gp15 or either gp40 preparation. IFNgamma production in response to C. hominis gp15 was noted in both CD4(+) and CD8(+) cells. This highlights the potential for C. hominis gp15 as a vaccine candidate for human cryptosporidiosis.
机译:隐孢子虫病是全世界腹泻的重要原因。在正常宿主中,感染是自限性的,并与血清转化和对再感染的部分免疫有关。免疫力与干扰素γ(IFNγ)的产生有关。就抗体反应而言,隐孢子虫表面蛋白gp15和gp40属于免疫优势蛋白。我们问了一个问题,这些抗原是否还会刺激有先前感染的血清学证据的患者产生IFNγ。用来自人隐隐孢子虫和小隐隐孢子虫或His-tag对照的重组gp15和gp 40刺激血清反应阳性供体的全血。人参衣原体gp15刺激IFNγ的产生增加。相比之下,用小隐孢子虫gp15或任一种gp40制剂刺激后没有明显增加。在CD4(+)和CD8(+)细胞中均记录到响应人类念珠菌gp15的IFNgamma产生。这突显了人型衣原体gp15作为人隐孢子虫病候选疫苗的潜力。

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