A number of peptide epitopes and fragments from three Mycobacterium tuberculosis (Mtb) cell wall proteins have been identified as early antigens that induce antibodies early during Mtb infection in humans. The proteins are Proline-Threonine Repetitive Protein (PTRP), PE-PGRS51, and LipC. These peptides, alone or in mixtures, or as parts of fusion polypeptides or peptide multimers, are useful as antigens for serological detection of early in infection by detecting the presence of early antibodies against these proteins, thereby permitting earlier diagnosis of Mtb infection than was heretofore possible by conventional means. The above peptides and other peptide-based compositions are also used as immunogens for inclusion in TB vaccines. Also provided are methods for early diagnosis of Mtb infection and for immunizing a subject to prevent or treat Mtb infections and tuberculosis.

Laal; Suman

Zolla-Pazner; Susan

NEW YORK UNIVERSITY

Immunodominant Mycobacterium tuberculosis peptides from cell wall proteins for early diagnosis and immunization

A naked nucleic acid construct comprising a coding sequence which encodes a mycobacterial stress protein or proline-rich antigen or an antigenically effective fragment thereof operably linked to a promoter capable of expressing the said coding sequence in a mammalian host cell is useful as a vaccine against a mycobacterial infection such as tuberculosis and leprosy.

tuberculosis/proline

Immunodominant Mycobacterium tuberculosis peptides from cell wall proteins for early diagnosis and immunization

Vaccine against mycobacterial infections

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