Are the PE-PGRS proteins of Mycobacterium tuberculosis variable surface antigens?
نویسندگان
چکیده
منابع مشابه
Differential B-cell responses are induced by Mycobacterium tuberculosis PE antigens Rv1169c, Rv0978c, and Rv1818c.
The multigene PE and PPE family represents about 10% of the genome of Mycobacterium tuberculosis. Here, we report that three members of the PE family, namely, Rv1169c, Rv0978c, and Rv1818c, elicit a strong, but differential, B-cell humoral response among different clinical categories of tuberculosis patients. The study population (n = 211) was comprised of different clinical groups of both adul...
متن کاملComparative immune response to PE and PE_PGRS antigens of Mycobacterium tuberculosis.
Sequencing of the entire genome of Mycobacterium tuberculosis identified a novel multigene family composed of two closely related subfamilies designated PE and PE_PGRS. The major difference between these two families is the presence of a domain containing numerous Gly-Ala repeats extending to the C terminus of the PE_PGRS genes. We have used a representative PE_PGRS gene from M. tuberculosis, R...
متن کاملHeterologous Expression, Purification, and Characterization of the HspX, Ppe44, and EsxV Proteins of Mycobacterium tuberculosis
Background: Subunit vaccines are appropriate vaccine candidates for the prevention of some infections. In this study, three immunogenic proteins of Mycobacterium tuberculosis, including HspX, Ppe44, and EsxV as a new construction, were expressed alone and as a fusion protein to develop a new vaccine candidate against tuberculosis infection. Methods: To make the fusion protein, the three genes ...
متن کاملCD4+ T Cells Recognizing PE/PPE Antigens Directly or via Cross Reactivity Are Protective against Pulmonary Mycobacterium tuberculosis Infection
Mycobacterium tuberculosis (Mtb), possesses at least three type VII secretion systems, ESX-1, -3 and -5 that are actively involved in pathogenesis and host-pathogen interaction. We recently showed that an attenuated Mtb vaccine candidate (Mtb Δppe25-pe19), which lacks the characteristic ESX-5-associated pe/ppe genes, but harbors all other components of the ESX-5 system, induces CD4+ T-cell immu...
متن کاملStrong antibody responses to Mycobacterium tuberculosis PE-PGRS62 protein are associated with latent and active tuberculosis.
Mycobacterium tuberculosis has a unique family of PE-PGRS proteins with conserved N-terminal domains (PE) containing site-specific proline-glutamine residues and polymorphic GC-rich repetitive sequences (PGRS). Tuberculosis (TB) patients produce antibodies against some such proteins, but it is not clear whether these responses correlate with disease. Clinical groups with different mycobacterium...
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ژورنال
عنوان ژورنال: Molecular Microbiology
سال: 2002
ISSN: 0950-382X,1365-2958
DOI: 10.1046/j.1365-2958.2002.02813.x