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The immunometabolite S-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity

BACKGROUND: Metabolic dysregulation and disruption of immune homeostasis have been widely associated with perioperative complications including perioperative ischemic stroke. Although immunometabolite S-2-hydroxyglutarate (S-2HG) is an emerging regulator of immune cells and thus triggers the immune...

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Autores principales: Zhang, Faqiang, Niu, Mu, Guo, Kaikai, Ma, Yulong, Fu, Qiang, Liu, Yanhong, Feng, Zeguo, Mi, Weidong, Wang, Long
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9264651/
https://www.ncbi.nlm.nih.gov/pubmed/35799259
http://dx.doi.org/10.1186/s12974-022-02537-4
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author Zhang, Faqiang
Niu, Mu
Guo, Kaikai
Ma, Yulong
Fu, Qiang
Liu, Yanhong
Feng, Zeguo
Mi, Weidong
Wang, Long
author_facet Zhang, Faqiang
Niu, Mu
Guo, Kaikai
Ma, Yulong
Fu, Qiang
Liu, Yanhong
Feng, Zeguo
Mi, Weidong
Wang, Long
author_sort Zhang, Faqiang
collection PubMed
description BACKGROUND: Metabolic dysregulation and disruption of immune homeostasis have been widely associated with perioperative complications including perioperative ischemic stroke. Although immunometabolite S-2-hydroxyglutarate (S-2HG) is an emerging regulator of immune cells and thus triggers the immune response, it is unclear whether and how S-2HG elicits perioperative ischemic brain injury and exacerbates post-stroke cognitive dysfunction. METHODS: Perioperative ischemic stroke was induced by transient middle cerebral artery occlusion for 60 min in C57BL/6 mice 1 day after ileocecal resection. CD8(+) T lymphocyte activation and invasion of the cerebrovascular compartment were measured using flow cytometry. Untargeted metabolomic profiling was performed to detect metabolic changes in sorted CD8(+) T lymphocytes after ischemia. CD8(+) T lymphocytes were transfected with lentivirus ex vivo to mobilize cell proliferation and differentiation before being transferred into recombination activating gene 1 (Rag1(−/−)) stroke mice. RESULTS: The perioperative stroke mice exhibit more severe cerebral ischemic injury and neurological dysfunction than the stroke-only mice. CD8(+) T lymphocyte invasion of brain parenchyma and neurotoxicity augment cerebral ischemic injury in the perioperative stroke mice. CD8(+) T lymphocyte depletion reverses exacerbated immune-mediated cerebral ischemic brain injury in perioperative stroke mice. Perioperative ischemic stroke triggers aberrant metabolic alterations in peripheral CD8(+) T cells, in which S-2HG is more abundant. S-2HG alters CD8(+) T lymphocyte proliferation and differentiation ex vivo and modulates the immune-mediated ischemic brain injury and post-stroke cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity. CONCLUSION: Our study establishes that S-2HG signaling-mediated activation and neurotoxicity of CD8(+) T lymphocytes might exacerbate perioperative ischemic brain injury and may represent a promising immunotherapy target in perioperative ischemic stroke. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12974-022-02537-4.
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spelling pubmed-92646512022-07-09 The immunometabolite S-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity Zhang, Faqiang Niu, Mu Guo, Kaikai Ma, Yulong Fu, Qiang Liu, Yanhong Feng, Zeguo Mi, Weidong Wang, Long J Neuroinflammation Research BACKGROUND: Metabolic dysregulation and disruption of immune homeostasis have been widely associated with perioperative complications including perioperative ischemic stroke. Although immunometabolite S-2-hydroxyglutarate (S-2HG) is an emerging regulator of immune cells and thus triggers the immune response, it is unclear whether and how S-2HG elicits perioperative ischemic brain injury and exacerbates post-stroke cognitive dysfunction. METHODS: Perioperative ischemic stroke was induced by transient middle cerebral artery occlusion for 60 min in C57BL/6 mice 1 day after ileocecal resection. CD8(+) T lymphocyte activation and invasion of the cerebrovascular compartment were measured using flow cytometry. Untargeted metabolomic profiling was performed to detect metabolic changes in sorted CD8(+) T lymphocytes after ischemia. CD8(+) T lymphocytes were transfected with lentivirus ex vivo to mobilize cell proliferation and differentiation before being transferred into recombination activating gene 1 (Rag1(−/−)) stroke mice. RESULTS: The perioperative stroke mice exhibit more severe cerebral ischemic injury and neurological dysfunction than the stroke-only mice. CD8(+) T lymphocyte invasion of brain parenchyma and neurotoxicity augment cerebral ischemic injury in the perioperative stroke mice. CD8(+) T lymphocyte depletion reverses exacerbated immune-mediated cerebral ischemic brain injury in perioperative stroke mice. Perioperative ischemic stroke triggers aberrant metabolic alterations in peripheral CD8(+) T cells, in which S-2HG is more abundant. S-2HG alters CD8(+) T lymphocyte proliferation and differentiation ex vivo and modulates the immune-mediated ischemic brain injury and post-stroke cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity. CONCLUSION: Our study establishes that S-2HG signaling-mediated activation and neurotoxicity of CD8(+) T lymphocytes might exacerbate perioperative ischemic brain injury and may represent a promising immunotherapy target in perioperative ischemic stroke. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12974-022-02537-4. BioMed Central 2022-07-07 /pmc/articles/PMC9264651/ /pubmed/35799259 http://dx.doi.org/10.1186/s12974-022-02537-4 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
Zhang, Faqiang
Niu, Mu
Guo, Kaikai
Ma, Yulong
Fu, Qiang
Liu, Yanhong
Feng, Zeguo
Mi, Weidong
Wang, Long
The immunometabolite S-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity
title The immunometabolite S-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity
title_full The immunometabolite S-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity
title_fullStr The immunometabolite S-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity
title_full_unstemmed The immunometabolite S-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity
title_short The immunometabolite S-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing CD8(+) T lymphocyte-mediated neurotoxicity
title_sort immunometabolite s-2-hydroxyglutarate exacerbates perioperative ischemic brain injury and cognitive dysfunction by enhancing cd8(+) t lymphocyte-mediated neurotoxicity
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9264651/
https://www.ncbi.nlm.nih.gov/pubmed/35799259
http://dx.doi.org/10.1186/s12974-022-02537-4
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