PMID- 33893172 OWN - NLM STAT- MEDLINE DCOM- 20220228 LR - 20231213 IS - 2470-9468 (Electronic) IS - 2470-9468 (Linking) VI - 6 IP - 58 DP - 2021 Apr 23 TI - Natural killer cell receptors regulate responses of HLA-E-restricted T cells. LID - eabe9057 [pii] LID - 10.1126/sciimmunol.abe9057 [doi] AB - Human cytomegalovirus (CMV) infection can stimulate robust human leukocyte antigen (HLA)-E-restricted CD8(+) T cell responses. These T cells recognize a peptide from UL40, which differs by as little as a single methyl group from self-peptides that also bind HLA-E, challenging their capacity to avoid self-reactivity. Unexpectedly, we showed that the UL40/HLA-E T cell receptor (TCR) repertoire included TCRs that had high affinities for HLA-E/self-peptide. However, paradoxically, lower cytokine responses were observed from UL40/HLA-E T cells bearing TCRs with high affinity for HLA-E. RNA sequencing and flow cytometric analysis revealed that these T cells were marked by the expression of inhibitory natural killer cell receptors (NKRs) KIR2DL1 and KIR2DL2/L3. On the other hand, UL40/HLA-E T cells bearing lower-affinity TCRs expressed the activating receptor NKG2C. Activation of T cells bearing higher-affinity TCRs was regulated by the interaction between KIR2D receptors and HLA-C. These findings identify a role for NKR signaling in regulating self/non-self discrimination by HLA-E-restricted T cells, allowing for antiviral responses while avoiding contemporaneous self-reactivity. CI - Copyright (c) 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. FAU - Sullivan, Lucy C AU - Sullivan LC AUID- ORCID: 0000-0003-2907-4989 AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. lcsull@unimelb.edu.au agbrooks@unimelb.edu.au. AD - Lung Transplant Service, The Alfred Hospital and Monash University Melbourne, Victoria 3000, Australia. FAU - Nguyen, Thi H O AU - Nguyen THO AUID- ORCID: 0000-0002-9294-7693 AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Harpur, Christopher M AU - Harpur CM AUID- ORCID: 0000-0002-3238-9861 AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Stankovic, Sanda AU - Stankovic S AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Kanagarajah, Abbie R AU - Kanagarajah AR AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Koutsakos, Marios AU - Koutsakos M AUID- ORCID: 0000-0001-9994-9723 AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Saunders, Philippa M AU - Saunders PM AUID- ORCID: 0000-0002-0813-7752 AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Cai, Zhangying AU - Cai Z AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Gray, James A AU - Gray JA AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Widjaja, Jacqueline M L AU - Widjaja JML AUID- ORCID: 0000-0002-4946-5584 AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Lin, Jie AU - Lin J AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Pietra, Gabriella AU - Pietra G AUID- ORCID: 0000-0002-7080-531X AD - Department of Experimental Medicine (DiMES). University of Genoa, Genoa 16132, Italy. AD - Unita Operativa Complessa Immunologia, Ospedale Policlinico San Martino, Genoa 16132, Italy. FAU - Mingari, Maria Cristina AU - Mingari MC AD - Department of Experimental Medicine (DiMES). University of Genoa, Genoa 16132, Italy. AD - Unita Operativa Complessa Immunologia, Ospedale Policlinico San Martino, Genoa 16132, Italy. AD - Center of Excellence for Biomedical Research, University of Genoa, Genoa 16132, Italy. FAU - Moretta, Lorenzo AU - Moretta L AD - Istituto di Ricovero e Cura a Carattere Scientifico Ospedale Pediatrico Bambino Gesu, 00165 Roma, Italy. FAU - Samir, Jerome AU - Samir J AUID- ORCID: 0000-0001-6557-9373 AD - School of Medical Sciences and The Kirby Institute, UNSW, Sydney, New South Wales, Australia. FAU - Luciani, Fabio AU - Luciani F AD - School of Medical Sciences and The Kirby Institute, UNSW, Sydney, New South Wales, Australia. FAU - Westall, Glen P AU - Westall GP AD - Lung Transplant Service, The Alfred Hospital and Monash University Melbourne, Victoria 3000, Australia. FAU - Malmberg, Karl J AU - Malmberg KJ AUID- ORCID: 0000-0002-8718-9373 AD - KG Jebsen Center for Cancer Immunotherapy, Institute of Clinical Medicine, University of Oslo, Oslo 0318, Norway. AD - Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital, Oslo 0310, Norway. AD - Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, 14186 Stockholm, Sweden. FAU - Kedzierska, Katherine AU - Kedzierska K AUID- ORCID: 0000-0001-6141-335X AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. FAU - Brooks, Andrew G AU - Brooks AG AUID- ORCID: 0000-0002-4085-9683 AD - Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute, Parkville, Victoria 3010, Australia. lcsull@unimelb.edu.au agbrooks@unimelb.edu.au. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Sci Immunol JT - Science immunology JID - 101688624 RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Receptors, Antigen, T-Cell) RN - 0 (Receptors, Natural Killer Cell) RN - 0 (UL40 glycoprotein, Cytomegalovirus) RN - 0 (Viral Proteins) SB - IM MH - CD8-Positive T-Lymphocytes/*immunology/metabolism MH - Cytomegalovirus/immunology MH - Cytomegalovirus Infections/blood/*immunology/virology MH - Histocompatibility Antigens Class I/*metabolism MH - Humans MH - Killer Cells, Natural/*immunology/metabolism MH - Receptors, Antigen, T-Cell/metabolism MH - Receptors, Natural Killer Cell/*metabolism MH - Viral Proteins/immunology/metabolism MH - HLA-E Antigens EDAT- 2021/04/25 06:00 MHDA- 2022/03/01 06:00 CRDT- 2021/04/24 05:40 PHST- 2020/09/23 00:00 [received] PHST- 2021/03/25 00:00 [accepted] PHST- 2021/04/24 05:40 [entrez] PHST- 2021/04/25 06:00 [pubmed] PHST- 2022/03/01 06:00 [medline] AID - 6/58/eabe9057 [pii] AID - 10.1126/sciimmunol.abe9057 [doi] PST - ppublish SO - Sci Immunol. 2021 Apr 23;6(58):eabe9057. doi: 10.1126/sciimmunol.abe9057.