Unravelling γδ T-cell dysregulation in the gut and its implications for immune-mediated diseases
Unravelling γδ T-cell dysregulation in the gut and its implications for immune-mediated diseases
Multisystem inflammatory syndrome in children (MIS-C) is a rare condition associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and characterised by systemic inflammation and T-cell dysfunction. A subset of patients with MIS-C were found to harbour rare variants in the gene BTNL8 that disrupt BTNL8-BTNL3 heterodimer formation, likely leading to inadequate γδ T-cell regulation and subsequent disrupted gut homeostasis. MIS-C shares clinical features with Kawasaki disease and similar mechanisms of pathogenesis with inflammatory bowel disease, despite these diseases being clinically distinct entities. We explore the common link between these diseases: the potentially critical role gut immunity plays in the initiation and persistence of disease through the tight regulation of γδ T cells via BTNL8 and BTNL3. Understanding the role of BTNL8 in the context of the overlap between these conditions may aid preventative measures and treatment of these conditions.
Santillo, Dilys
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Bellos, Evangelos
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Sancho-Shimizu, Vanessa
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1 September 2025
Santillo, Dilys
b9dd7843-9911-4645-9217-4fa60d6f0f7c
Bellos, Evangelos
719c8ef8-c89d-4231-810a-867dd59d31dc
Sancho-Shimizu, Vanessa
69e2facb-85a6-431d-8ddd-515208e89893
Santillo, Dilys, Bellos, Evangelos and Sancho-Shimizu, Vanessa
(2025)
Unravelling γδ T-cell dysregulation in the gut and its implications for immune-mediated diseases.
Disease Models and Mechanisms, 18 (9), [dmm052439].
(doi:10.1242/dmm.052439).
Abstract
Multisystem inflammatory syndrome in children (MIS-C) is a rare condition associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and characterised by systemic inflammation and T-cell dysfunction. A subset of patients with MIS-C were found to harbour rare variants in the gene BTNL8 that disrupt BTNL8-BTNL3 heterodimer formation, likely leading to inadequate γδ T-cell regulation and subsequent disrupted gut homeostasis. MIS-C shares clinical features with Kawasaki disease and similar mechanisms of pathogenesis with inflammatory bowel disease, despite these diseases being clinically distinct entities. We explore the common link between these diseases: the potentially critical role gut immunity plays in the initiation and persistence of disease through the tight regulation of γδ T cells via BTNL8 and BTNL3. Understanding the role of BTNL8 in the context of the overlap between these conditions may aid preventative measures and treatment of these conditions.
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dmm052439
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Published date: 1 September 2025
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Local EPrints ID: 506284
URI: http://eprints.soton.ac.uk/id/eprint/506284
ISSN: 1754-8403
PURE UUID: c4650101-709a-4309-82ec-e482424d9f88
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Date deposited: 03 Nov 2025 17:34
Last modified: 04 Nov 2025 03:10
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Author:
Dilys Santillo
Author:
Evangelos Bellos
Author:
Vanessa Sancho-Shimizu
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