Ligand-Receptor Interactions of Galectin-9 and VISTA Suppress Human T Lymphocyte Cytotoxic Activity
- Link:
- Autor/in:
- Erscheinungsjahr:
- 2020
- Medientyp:
- Text
- Beschreibung:
-
Acute myeloid leukemia (AML), a blood/bone marrow cancer, is a severe and often fatal malignancy. AML cells are capable of impairing the anti-cancer activities of cytotoxic lymphoid cells. This includes the inactivation of natural killer (NK) cells and killing of T lymphocytes. Here we report for the first time that V-domain Ig-containing suppressor of T cell activation (VISTA), a protein expressed by T cells, recognizes galectin-9 secreted by AML cells as a ligand. Importantly, we found that soluble VISTA released by AML cells enhances the effect of galectin-9, most likely by forming multiprotein complexes on the surface of T cells and possibly creating a molecular barrier. These events cause changes in the plasma membrane potential of T cells leading to activation of granzyme B inside cytotoxic T cells, resulting in apoptosis.
- Lizenz:
-
- info:eu-repo/semantics/restrictedAccess
- Quellsystem:
- Forschungsinformationssystem des UKE
Interne Metadaten
- Quelldatensatz
- oai:pure.atira.dk:publications/2f1cbf84-4636-4d01-95cd-b5cba6edea42