{Reference Type}: Journal Article
{Title}: ABIN1 is a negative regulator of effector functions in cytotoxic T cells.
{Author}: Janusova S;Paprckova D;Michalik J;Uleri V;Drobek A;Salyova E;Chorfi L;Neuwirth A;Andreyeva A;Prochazka J;Sedlacek R;Draber P;Stepanek O;
{Journal}: EMBO Rep
{Volume}: 25
{Issue}: 8
{Year}: 2024 Aug 14
{Factor}: 9.071
{DOI}: 10.1038/s44319-024-00179-6
{Abstract}: T cells are pivotal in the adaptive immune defense, necessitating a delicate balance between robust response against infections and self-tolerance. Their activation involves intricate cross-talk among signaling pathways triggered by the T-cell antigen receptors (TCR) and co-stimulatory or inhibitory receptors. The molecular regulation of these complex signaling networks is still incompletely understood. Here, we identify the adaptor protein ABIN1 as a component of the signaling complexes of GITR and OX40 co-stimulation receptors. T cells lacking ABIN1 are hyper-responsive ex vivo, exhibit enhanced responses to cognate infections, and superior ability to induce experimental autoimmune diabetes in mice. ABIN1 negatively regulates p38 kinase activation and late NF-κB target genes. P38 is at least partially responsible for the upregulation of the key effector proteins IFNG and GZMB in ABIN1-deficient T cells after TCR stimulation. Our findings reveal the intricate role of ABIN1 in T-cell regulation.