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Germline mutations in a G protein identify signaling cross-talk in T cells

  • Hyoungjun Ham
  • , Huie Jing
  • , Ian T. Lamborn
  • , Megan M. Kober
  • , Alexey Koval
  • , Yamina A. Berchiche
  • , D. Eric Anderson
  • , Kirk M. Druey
  • , Judith N. Mandl
  • , Bertrand Isidor
  • , Carlos R. Ferreira
  • , Alexandra F. Freeman
  • , Sundar Ganesan
  • , Meliha Karsak
  • , Peter J. Mustillo
  • , Juliana Teo
  • , Zarazuela Zolkipli-Cunningham
  • , Nicolas Chatron
  • , François Lecoquierre
  • , Andrew J. Oler
  • Jana Pachlopnik Schmid, Douglas B. Kuhns, Xuehua Xu, Fabian Hauck, Waleed Al-Herz, Matias Wagner, Paulien A. Terhal, Mari Muurinen, Vincent Barlogis, Phillip Cruz, Jeffrey Danielson, Helen Stewart, Petra Loid, Sebastian Rading, Boris Keren, Rolph Pfundt, Kol A. Zarember, Katharina Vill, Lorraine Potocki, Kenneth N. Olivier, Gaetan Lesca, Laurence Faivre, Melanie Wong, Anne Puel, Janet Chou, Maud Tusseau, Niki M. Moutsopoulos, Helen F. Matthews, Cas Simons, Ryan J. Taft, Ariane Soldatos, Etienne Masle-Farquhar, Stefania Pittaluga, Robert Brink, Danielle L. Fink, Heidi H. Kong, Juraj Kabat, Woo Sung Kim, Tatjana Bierhals, Kazuyuki Meguro, Amy P. Hsu, Jingwen Gu, Jennifer Stoddard, Benito Banos-Pinero, Maria Slack, Giampaolo Trivellin, Benoît Mazel, Maarja Soomann, Samuel Li, Val J. Watts, Constantine A. Stratakis, Maria F. Rodriguez-Quevedo, Ange Line Bruel, Marita Lipsanen-Nyman, Paul Saultier, Rashmi Jain, Daphne Lehalle, Daniel Torres, Kathleen E. Sullivan, Sébastien Barbarot, Axel Neu, Yannis Duffourd, Morgan Similuk, Kirsty McWalter, Pierre Blanc, Stéphane Bézieau, Tian Jin, Raif S. Geha, Jean Laurent Casanova, Outi M. Makitie, Christian Kubisch, Patrick Edery, John Christodoulou, Ronald N. Germain, Christopher C. Goodnow, Thomas P. Sakmar, Daniel D. Billadeau, Sébastien Küry, Vladimir L. Katanaev, Yu Zhang, Michael J. Lenardo, Helen C. Su*
*Corresponding author for this work
  • Human Immunological Diseases Section
  • National Institutes of Health
  • Clinical Genomics Program
  • Division of Oncology Research
  • Mayo Clinic Rochester, MN
  • Department of Pathology and Laboratory Medicine
  • University of Pennsylvania
  • Department of Cell Physiology and Metabolism
  • University of Geneva
  • Laboratory of Chemical Biology and Signal Transduction
  • Rockefeller University
  • Advanced Mass Spectrometry Facility
  • Lung and Vascular Inflammation Section
  • Lymphocyte Biology Section
  • Department of Neurology
  • CNRS UMR 6291
  • Skeletal Genomics Unit
  • Laboratory of Clinical Immunology and Microbiology
  • Biological Imaging Section
  • Neuronal and Cellular Signal Transduction
  • University of Hamburg
  • Institute of Human Genetics
  • Nationwide Children’s Hospital
  • Ohio State University
  • Department of Haematology
  • The Children's Hospital at Westmead
  • Division of Human Genetics
  • Children's Hospital of Philadelphia
  • Department of Pediatrics
  • Service de Génétique
  • Hospices civils de Lyon
  • Universite Claude Bernard Lyon 1
  • INSERM U12045 and CHU Rouen
  • University of Rouen
  • Bioinformatics and Computational Biosciences Branch
  • Division of Immunology
  • University of Zurich
  • Pediatric Immunology
  • Neutrophil Monitoring Lab
  • Leidos Inc
  • Chemotaxis Signal Section
  • Division of Pediatric Immunology and Rheumatology
  • Ludwig Maximilian University of Munich
  • Department of Pediatrics
  • Kuwait University
  • Al-Sabah Hospital
  • Institute of Human Genetics
  • Technical University of Munich
  • Institute of Neurogenomics
  • Helmholtz Zentrum München - German Research Center for Environmental Health
  • Division of Laboratories
  • Utrecht University
  • Folkhalsan
  • University of Helsinki
  • Research Program for Clinical and Molecular Metabolism
  • APHM
  • CHU la Timone
  • Research Unit
  • Aix-Marseille Université
  • Oxford University Hospitals NHS Foundation Trust
  • Genetic Departement
  • Sorbonne Université
  • SeqOIA Laboratory
  • FMG2025
  • Department of Human Genetics
  • Radboud University Nijmegen
  • Department of Molecular and Human Genetics
  • Baylor College of Medicine
  • Texas Children's Hospital Houston
  • Pulmonary Branch
  • Institut national de la santé et de la recherche médicale
  • Centre de Génétique et Centre de Référence “Anomalies du Développement et Syndromes Malformatifs de l’Inter-région Est”
  • Université de Bourgogne
  • Department of Allergy and Immunology
  • St. Giles Laboratory of Human Genetics of Infectious Diseases
  • Laboratory of Human Genetics of Infectious Diseases
  • INSERM U1163
  • Université Paris Cité
  • Division of Immunology
  • Harvard University
  • École normale supérieure de Lyon
  • Oral Immunity and Infection Section
  • Molecular Development of the Immune System Section
  • Centre for Population Genomics
  • University of New South Wales
  • Murdoch Children's Research Institute
  • University of Queensland
  • Illumina, Inc.
  • Immunogenomics Laboratory
  • Garvan Institute of Medical Research
  • School of Clinical Medicine
  • Laboratory of Pathology
  • St. Vincent's Hospital Sydney
  • B Cell Biology Laboratory
  • Cutaneous Microbiome and Inflammation Section
  • Immunology Service
  • Division of Allergy and Immunology
  • University of Rochester
  • Purdue University
  • INSERM
  • Clinical Immunology
  • UF de Génétique Clinique
  • Assistance publique – Hôpitaux de Paris
  • Division of Allergy and Immunology
  • Department of Dermatology
  • Department of Pediatrics
  • Centralized Sequencing Program
  • OPKO Health, Inc.
  • Howard Hughes Medical Institute
  • Department of Pediatrics
  • Department of Genetics, Lyon University Hospital, CNRS UMR 5292
  • Department of Paediatrics
  • Specialty of Child and Adolescent Health
  • The University of Sydney

Research output: Contribution to journal › Article › peer-review

Abstract

Humans with monogenic inborn errors responsible for extreme disease phenotypes can reveal essential physiological pathways. We investigated germline mutations in GNAI2, which encodes Gai2, a key component in heterotrimeric G protein signal transduction usually thought to regulate adenylyl cyclase–mediated cyclic adenosine monophosphate (cAMP) production. Patients with activating Gai2 mutations had clinical presentations that included impaired immunity. Mutant Gai2 impaired cell migration and augmented responses to T cell receptor (TCR) stimulation. We found that mutant Gai2 influenced TCR signaling by sequestering the guanosine triphosphatase (GTPase)–activating protein RASA2, thereby promoting RAS activation and increasing downstream extracellular signal–regulated kinase (ERK)/mitogen-activated protein kinase (MAPK) and phosphatidylinositol 3-kinase (PI3K)–AKT S6 signaling to drive cellular growth and proliferation.

Original languageEnglish
Article numbereadd8947
JournalScience
Volume385
Issue number6715
DOIs
Publication statusPublished - 20 Sept 2024
Externally publishedYes

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