Kaori L Fonseca, Ana Raquel Maceiras, Rita Matos, Luisa Simoes-Costa, Jeremy Sousa, Baltazar Cá, Leandro Barros, Ana Isabel Fernandes, Stefan Mereiter, Ricardo Reis, Joana Gomes, Gustavo Tapia, Paula Rodríguez-Martínez, Montse Martín-Céspedes, Sergo Vashakidze, Shota Gogishvili, Keti Nikolaishvili, Rui Appelberg, Fátima Gärtner, Pedro N S Rodrigues, Cristina Vilaplana, Celso A Reis, Ana Magalhães, Margarida Saraiva
Modulation of immunity and disease by glycans is increasingly recognized. However, how host glycosylation shapes and is shaped by tuberculosis remains poorly understood. We show that deficiency in the glucosaminyl (N-acetyl) transferase 1 (Gcnt1), a key enzyme for core-2 O-glycans biosynthesis, drives susceptibility to Mycobacterium tuberculosis infection. The increased susceptibility of Gcnt1 deficient mice was characterized by extensive lung immune pathology, mechanistically related to neutrophils. Uninfected Gcnt1 deficient mice presented bone marrow, blood and lung neutrophilia, which further increased with infection...
September 2020: Mucosal Immunology