The early secretory antigenic target (ESAT)-6 purified protein and peptides from Mycobacterium tuberculosis were evaluated as antigens for the immunodiagnosis of tuberculosis (TB). Because the control of TB requires improved diagnostic procedures, efforts have increased to identify Mycobacterium tuberculosis-specific epitopes for the immunodiagnosis of active TB and to discriminate between active and latent states of infection. Two multiepitopic peptides from ESAT-6 protein were selected by computational analysis. Patients with active TB (7 HIV(+) and 20 HIV(-)) and control patients (17 HIV(+) and 28 HIV(-)) were enrolled. Enzyme-linked immunospot assay analysis for interferon-g expression by peripheral blood mononuclear cells was quantified after stimulation with selected ESAT-6 peptides, purified protein derivative, or the intact ESAT-6 protein. During active TB, 20 of 27 patients responded in vitro to ESAT-6 peptides and 23 of 27 patients to purified protein derivative. None of the controls without active TB, including individuals with latent TB infection, recognized ESAT-6 peptides. By contrast, latently infected individuals did respond in vitro to both intact ESAT-6 protein and purified protein derivative. Thus, high T-cell response frequencies to ESAT-6 peptides are present only during active TB and can be used to discriminate between active and latent forms of infection.

Vincenti, D., Carrara, S., De Mori, P., Pucillo, L., Petrosillo, N., Palmieri, F., et al. (2003). Identification of early secretory antigen target-6 epitopes for the immunodiagnosis of active tuberculosis. MOLECULAR MEDICINE, 9(3-4), 105-111.

Identification of early secretory antigen target-6 epitopes for the immunodiagnosis of active tuberculosis

AMICOSANTE, MASSIMO;
2003-01-01

Abstract

The early secretory antigenic target (ESAT)-6 purified protein and peptides from Mycobacterium tuberculosis were evaluated as antigens for the immunodiagnosis of tuberculosis (TB). Because the control of TB requires improved diagnostic procedures, efforts have increased to identify Mycobacterium tuberculosis-specific epitopes for the immunodiagnosis of active TB and to discriminate between active and latent states of infection. Two multiepitopic peptides from ESAT-6 protein were selected by computational analysis. Patients with active TB (7 HIV(+) and 20 HIV(-)) and control patients (17 HIV(+) and 28 HIV(-)) were enrolled. Enzyme-linked immunospot assay analysis for interferon-g expression by peripheral blood mononuclear cells was quantified after stimulation with selected ESAT-6 peptides, purified protein derivative, or the intact ESAT-6 protein. During active TB, 20 of 27 patients responded in vitro to ESAT-6 peptides and 23 of 27 patients to purified protein derivative. None of the controls without active TB, including individuals with latent TB infection, recognized ESAT-6 peptides. By contrast, latently infected individuals did respond in vitro to both intact ESAT-6 protein and purified protein derivative. Thus, high T-cell response frequencies to ESAT-6 peptides are present only during active TB and can be used to discriminate between active and latent forms of infection.
2003
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore MED/04 - PATOLOGIA GENERALE
Settore MED/07 - MICROBIOLOGIA E MICROBIOLOGIA CLINICA
Settore MED/17 - MALATTIE INFETTIVE
English
Con Impact Factor ISI
Interferon-gamma; Recombinant Proteins; Humans; Bacterial Proteins; Cells, Cultured; Tuberculosis, Pulmonary; Adult; Antigens, Bacterial; Enzyme-Linked Immunosorbent Assay; Tuberculosis; Middle Aged; Epitopes; Female; Male; T-Lymphocytes; Mycobacterium tuberculosis
Vincenti, D., Carrara, S., De Mori, P., Pucillo, L., Petrosillo, N., Palmieri, F., et al. (2003). Identification of early secretory antigen target-6 epitopes for the immunodiagnosis of active tuberculosis. MOLECULAR MEDICINE, 9(3-4), 105-111.
Vincenti, D; Carrara, S; De Mori, P; Pucillo, L; Petrosillo, N; Palmieri, F; Armignacco, O; Ippolito, G; Girardi, E; Amicosante, M; Goletti, D
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/107089
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact