ESAT-6 and CFP-10 reactive IgG in patients with tuberculosis inhibits intracellular bacteria.

ABSTRACT: Perspectives beyond the CD4 T cell interferon (IFN)-γ paradigm are needed to understand immunity in tuberculosis (TB). Growing data in patients across a spectrum of TB highlight that changes in antibody Fc domain glycosylation and Fc effector functions correlate with disease and impact Mycobacterium tuberculosis (Mtb) infection. How antigen-specific antibodies within polyclonal responses affect bacteria is less clear. This study examines antibodies targeting ESAT-6 and CFP-10, Mtb virulence proteins essential for pathogenesis. Data from patients with TB show that polyclonal immunoglobulin (Ig)G reactive to ESAT-6 and CFP-10 diverges from other Mtb and non-Mtb antigens with enhanced sialylation, afucosylation, natural killer cell-mediated cellular cytotoxicity, and association with anti-mic

SUBMITTER: Miles JR 

PROVIDER: S-EPMC12842600 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature