Role of LFA-1 integrin in the control of a lymphocytic choriomeningitis virus (LCMV) infection

Virulence

Ulrich H. von Andrian¹  Mario Perro¹  Matteo Iannacone¹  Antonio Peixoto¹ 

[1] Harvard Medical School, Department of Microbiology and Immunobiology, Boston, Massachusetts, US;

关键词: Integrin;    T cell activation;    LCMV;    T cell differentiation;   

DOI  :  10.1080/21505594.2020.1845506

来源: Taylor & Francis

【 摘 要 】

Leukocyte function-associated antigen 1 (LFA-1) is the most widely expressed member of the β2 integrin family of cell-cell adhesion molecules. Although LFA-1 is thought to regulate multiple aspects of T cell immunity, its role in the response of CD8+ T cells to viral infections remains unclear. Indeed, compelling clinical evidence shows that loss of LFA-1 function predisposes to infection in humans but animal models show limited to no susceptibility to infection. Here, we addressed this conundrum in a mouse model of infection with lymphocytic choriomeningitis virus (LCMV), where CD8+ T cells are necessary and sufficient to confer protection. To this end, we followed the fate and function of wild-type and LFA-1 deficient virus-specific CD8+ T cells and assessed the effect of blocking anti-LFA-1 monoclonal antibody in the outcome of infection. Our analysis of viral clearance and T cell responses using transcriptome profiling reveals a role for LFA-1 as a gatekeeper of effector T cell survival and dysfunction that when defective can predispose to LCMV infection.

【 授权许可】

CC BY