1. VISTA deficiency protects from immune complex-mediated glomerulonephritis by inhibiting neutrophil activation.
- Author
-
Tham EL, Freeley SJ, Bearder S, Barros FF, Cragg MS, Mócsai A, and Robson MG
- Subjects
- Animals, Disease Models, Animal, Freund's Adjuvant administration & dosage, Freund's Adjuvant immunology, Glomerulonephritis blood, Glomerulonephritis pathology, Humans, Kidney Glomerulus immunology, Male, Membrane Proteins genetics, Mice, Mice, Transgenic, Myeloid Cell Leukemia Sequence 1 Protein deficiency, Myeloid Cell Leukemia Sequence 1 Protein genetics, Neutrophil Activation, Neutrophils metabolism, Antigen-Antibody Complex immunology, Glomerulonephritis immunology, Kidney Glomerulus pathology, Membrane Proteins deficiency, Neutrophils immunology
- Abstract
V-type immunoglobulin domain-containing suppressor of T-cell activation (VISTA) is a negative checkpoint regulator of T cells. We assessed VISTA deficient mice in the murine nephrotoxic nephritis models of acute and chronic immune-complex mediated glomerulonephritis. We show that VISTA deficiency protects from crescentic glomerulonephritis, with no effect on the nephritogenic adaptive immune response. The early neutrophil influx was unaffected but proteinuria was reduced suggesting a reduction in neutrophil activation. In vivo, there was reduced neutrophil degranulation in VISTA deficienct mice and, in vitro, VISTA-deficient neutrophils had an impaired response to immune complexes but not to fMLP or PMA. Mice with a genetic deficiency of neutrophils due to myeloid-specific deletion of myeloid cell leukemia 1 (Mcl-1) were also protected from crescentic glomerulonephritis, indicating an essential role for neutrophils. Therefore, VISTA deficiency inhibits neutrophil activation by immune complexes and neutrophil-dependent crescentic glomerulonephritis. This suggests that VISTA is a therapeutic target for inflammatory disease. However, this would need to be balanced against a potential enhancing effect on autoimmunity., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF