GIMAP5 deficiency reveals a mammalian ceramide-driven longevity assurance pathway

Ann Y. Park, Michael Leney-Greene, Matthew Lynberg, Justin Q. Gabrielski, Xijin Xu, Benjamin Schwarz, Lixin Zheng, Arasu Balasubramaniyam, Hyoungjun Ham, Brittany Chao, Yu Zhang, Helen F. Matthews, Jing Cui, Yikun Yao, Satoshi Kubo, Jean Michel Chanchu, Aaron R. Morawski, Sarah A. Cook, Ping Jiang, Juan C. RavellYan H. Cheng, Alex George, Aiman Faruqi, Alison M. Pagalilauan, Jenna R.E. Bergerson, Sundar Ganesan, Samuel D. Chauvin, Jahnavi Aluri, Joy Edwards-Hicks, Eric Bohrnsen, Caroline Tippett, Habib Omar, Leilei Xu, Geoffrey W. Butcher, John Pascall, Elif Karakoc-Aydiner, Ayca Kiykim, Holden Maecker, İlhan Tezcan, Saliha Esenboga, Raul Jimenez Heredia, Deniz Akata, Saban Tekin, Altan Kara, Zarife Kuloglu, Emel Unal, Tanıl Kendirli, Figen Dogu, Esra Karabiber, T. Prescott Atkinson, Claude Cochet, Odile Filhol, Catherine M. Bosio, Mark M. Davis, Richard P. Lifton, Erika L. Pearce, Oliver Daumke, Caner Aytekin, Gülseren Evirgen Şahin, Aysel Ünlüsoy Aksu, Gulbu Uzel, V. Koneti Rao, Sinan Sari, Kaan Boztug, Deniz Cagdas, Sule Haskologlu, Aydan Ikinciogullari, David Schwefel, Silvia Vilarinho, Safa Baris, Ahmet Ozen, Helen C. Su, Michael J. Lenardo

Research output: Contribution to journalArticlepeer-review

Abstract

Preserving cells in a functional, non-senescent state is a major goal for extending human healthspans. Model organisms reveal that longevity and senescence are genetically controlled, but how genes control longevity in different mammalian tissues is unknown. Here, we report a new human genetic disease that causes cell senescence, liver and immune dysfunction, and early mortality that results from deficiency of GIMAP5, an evolutionarily conserved GTPase selectively expressed in lymphocytes and endothelial cells. We show that GIMAP5 restricts the pathological accumulation of long-chain ceramides (CERs), thereby regulating longevity. GIMAP5 controls CER abundance by interacting with protein kinase CK2 (CK2), attenuating its ability to activate CER synthases. Inhibition of CK2 and CER synthase rescues GIMAP5-deficient T cells by preventing CER overaccumulation and cell deterioration. Thus, GIMAP5 controls longevity assurance pathways crucial for immune function and healthspan in mammals.

Original languageEnglish (US)
Pages (from-to)282-293
Number of pages12
JournalNature Immunology
Volume25
Issue number2
DOIs
StatePublished - Feb 2024

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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