Immunogenicity of Nef protein of SIVSMM-PBj14 expressed in a live vaccine strain of Salmonella species.

Immunogenicity of Nef protein of SIVSMM-PBj14 expressed in a live vaccine strain of Salmonella species.
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在沙门氏菌活疫苗株中表达的 SIVSMM-PBj14 的 Nef 蛋白的免疫原性。

DOI:
10.1089/aid.1994.10.1011
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发表时间:
1994
影响因子:
1.5
通讯作者:
Stocker,BA
Stocker,BA
中科院分区:
医学4区
文献类型:
--
作者:
Cattozzo,EM;Stocker,BA

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然后将SIVSMM分离株PBj14的感染性分子克隆的ef基因与日本血吸虫的谷胱甘肽S-转移酶基因融合以产生质粒pEMC100。将重组质粒置于anaroAlive疫苗都柏林沙门氏菌菌株中,并通过暴露于IPTG诱导GST-Nef蛋白的产生。纯化融合蛋白并通过腹膜内注射作为疫苗给予 BALB/c 小鼠。注射。与含有等量(0.1μg)融合蛋白的IPTG诱导的沙门氏菌活疫苗相比,几个剂量的纯化融合蛋白产生了更早的抗GST-Nef反应,但没有抗GST反应,这显然是因为注射活疫苗具有短暂的免疫抑制作用。通过第三次免疫接种方案获得了最高的抗GST-Nef滴度,其中用诱导活疫苗的初免接种物处理小鼠,然后在预测的免疫抑制间隔后进行两次腹膜内注射。 1 μg 纯化 GST-Nef 蛋白与 Ribi 佐剂的剂量。这里提供的数据表明 SL5928aroA,一种减毒的 S。 dublinstrain可用作活疫苗载体来表达SIVSMM.PBj14的Nef蛋白,SIVSMM.PBj14是迄今为止描述的致病性最强的灵长类慢病毒之一。
Thenefgene of an infectious molecular clone of SIVSMMisolate PBj14 was fused to the glutathioneS-transferase gene ofSchistosoma japonicumto generate plasmid pEMCl00. The recombinant plasmid was placed in anaroAlive vaccineSalmonella dublinstrain, and the production of GST-Nef protein was induced by exposure to IPTG. The fusion protein was purified and administered as vaccine to BALB/c mice by i.p. injection. Several doses of the purified fusion protein produced an earlier anti-GST-Nef response, without an anti-GST response, than did IPTG-inducedSalmonellalive vaccine containing an equal amount (0.1 μg) of fusion protein, apparently because of the transient immunosuppressive effect of live vaccine given by injection. The highest antiGST-Nef titers were obtained by a third immunization schedule in which mice were treated with a priming inoculum of induced live vaccine followed, after the predicted immunosuppressed interval, by two i.p. doses of 1 μg of purified GST-Nef protein with Ribi adjuvant. The data presented here demonstrate that SL5928aroA, an attenuatedS. dublinstrain, can be used as a live vaccine carrier to express Nef protein of SIVSMM.PBj14, one of the most acutely pathogenic primate lentiviruses so far described.
对沙门氏菌鞭毛中插入的霍乱毒素表位的免疫反应。
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发表时间: 1989
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