PMID- 18835194 OWN - NLM STAT- MEDLINE DCOM- 20081215 LR - 20231213 IS - 1097-4180 (Electronic) IS - 1074-7613 (Print) IS - 1074-7613 (Linking) VI - 29 IP - 4 DP - 2008 Oct 17 TI - Inhibitory receptor signaling via tyrosine phosphorylation of the adaptor Crk. PG - 578-88 LID - 10.1016/j.immuni.2008.07.014 [doi] AB - Many cellular responses, such as autoimmunity and cytotoxicity, are controlled by receptors with cytoplasmic immunoreceptor tyrosine-based inhibition motifs (ITIMs). Here, we showed that binding of inhibitory natural killer (NK) cell receptors to human leukocyte antigen (HLA) class I on target cells induced tyrosine phosphorylation of the adaptor Crk, concomitant with dephosphorylation of the guanine exchange factor Vav1. Furthermore, Crk dissociated from the guanine exchange factor C3G and bound to the tyrosine kinase c-Abl during inhibition. Membrane targeting of a tyrosine-mutated form of Crk could overcome inhibition of NK cell cytotoxicity, providing functional evidence that Crk phosphorylation contributes to inhibition. The specific phosphorylation of Crk and its dissociation from a signaling complex, observed here with two types of inhibitory receptors, expands the signaling potential of the large ITIM-receptor family and reveals an unsuspected component of the inhibitory mechanism. FAU - Peterson, Mary E AU - Peterson ME AD - Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA. FAU - Long, Eric O AU - Long EO LA - eng GR - Z01 AI000525-20/Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Intramural DEP - 20081002 PL - United States TA - Immunity JT - Immunity JID - 9432918 RN - 0 (BCAR1 protein, human) RN - 0 (Crk-Associated Substrate Protein) RN - 0 (Guanine Nucleotide-Releasing Factor 2) RN - 0 (HLA Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (NK Cell Lectin-Like Receptor Subfamily D) RN - 0 (Proto-Oncogene Proteins c-crk) RN - 0 (Proto-Oncogene Proteins c-vav) RN - 0 (Receptors, KIR) RN - 0 (Receptors, Natural Killer Cell) RN - 0 (VAV1 protein, human) RN - EC 2.3.2.27 (Proto-Oncogene Proteins c-cbl) RN - EC 2.7.10.2 (Proto-Oncogene Proteins c-abl) RN - EC 3.1.3.48 (PTPN6 protein, human) RN - EC 3.1.3.48 (Protein Tyrosine Phosphatase, Non-Receptor Type 6) SB - IM CIN - Immunity. 2008 Oct 17;29(4):515-7. PMID: 18957262 MH - Amino Acid Motifs/immunology MH - Animals MH - Crk-Associated Substrate Protein/immunology/metabolism MH - Guanine Nucleotide-Releasing Factor 2/immunology/metabolism MH - HLA Antigens/immunology/metabolism MH - Histocompatibility Antigens Class I/immunology/metabolism MH - Humans MH - Killer Cells, Natural/*immunology/metabolism MH - NK Cell Lectin-Like Receptor Subfamily D/immunology/metabolism MH - Phosphorylation MH - Protein Tyrosine Phosphatase, Non-Receptor Type 6/immunology/metabolism MH - Proto-Oncogene Proteins c-abl/immunology/metabolism MH - Proto-Oncogene Proteins c-cbl/immunology/metabolism MH - Proto-Oncogene Proteins c-crk/immunology/*metabolism MH - Proto-Oncogene Proteins c-vav/immunology/metabolism MH - Rats MH - Receptors, KIR/immunology/*metabolism MH - Receptors, Natural Killer Cell/immunology/metabolism MH - HLA-E Antigens PMC - PMC2639764 MID - NIHMS74844 EDAT- 2008/10/07 09:00 MHDA- 2008/12/17 09:00 PMCR- 2009/10/01 CRDT- 2008/10/07 09:00 PHST- 2008/02/18 00:00 [received] PHST- 2008/06/25 00:00 [revised] PHST- 2008/07/30 00:00 [accepted] PHST- 2008/10/07 09:00 [pubmed] PHST- 2008/12/17 09:00 [medline] PHST- 2008/10/07 09:00 [entrez] PHST- 2009/10/01 00:00 [pmc-release] AID - S1074-7613(08)00407-X [pii] AID - 10.1016/j.immuni.2008.07.014 [doi] PST - ppublish SO - Immunity. 2008 Oct 17;29(4):578-88. doi: 10.1016/j.immuni.2008.07.014. Epub 2008 Oct 2.