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Expression and Immunogenicity of a Mutant Diphtheria Toxin Molecule, CRM197, and Its Fragments inSalmonella typhi Vaccine Strain CVD 908-htrA

机译:突变型白喉毒素分子CRM197及其片段在鼠伤寒沙门氏菌疫苗株CVD 908-htrA中的表达和免疫原性

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摘要

Mutant diphtheria toxin molecule CRM197 and fragments thereof were expressed in attenuated Salmonella typhi CVD 908-htrA, and the constructs were tested for their ability to induce serum antitoxin. Initially, expressed proteins were insoluble, and the constructs failed to induce neutralizing antitoxin. Soluble CRM197 was expressed at low levels by utilizing the hemolysin A secretion system from Escherichia coli.
机译:在减毒的 Salmonella typhi CVD 908- htrA 中表达突变的白喉毒素分子CRM 197 及其片段。诱导血清抗毒素。最初,表达的蛋白质是不溶的,并且构建体不能诱导中和抗毒素。利用大肠杆菌的溶血素A分泌系统,可溶性CRM 197 以低水平表达。

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