Tzu-Yuan Chiu, Chien-Hui Lo, Yi-Hsuan Lin, Yun-Di Lai, Shan-Shan Lin, Ya-Tian Fang, Wei-Syun Huang, Shen-Yan Huang, Pei-Yuan Tsai, Fu-Hua Yang, Weng Man Chong, Yi-Chieh Wu, Hsing-Chen Tsai, Ya-Wen Liu, Chia-Lin Hsu, Jung-Chi Liao, Won-Jing Wang
The immune synapse, a highly organized structure formed at the interface between T lymphocytes and antigen-presenting cells (APCs), is essential for T cell activation and the adaptive immune response. It has been shown that this interface shares similarities with the primary cilium, a sensory organelle in eukaryotic cells, although the roles of ciliary proteins on the immune synapse remain elusive. Here, we find that inositol polyphosphate-5-phosphatase E (INPP5E), a cilium-enriched protein responsible for regulating phosphoinositide localization, is enriched at the immune synapse in Jurkat T-cells during superantigen-mediated conjugation or antibody-mediated crosslinking of TCR complexes, and forms a complex with CD3ζ, ZAP-70, and Lck...
September 5, 2023: Communications Biology