Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.753083 |
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Title: | The immunobiology of human hepatic gamma delta T cells | ||||||
Author: | Hunter, Stuart |
ISNI:
0000 0004 7426 1908
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Awarding Body: | University of Birmingham | ||||||
Current Institution: | University of Birmingham | ||||||
Date of Award: | 2018 | ||||||
Availability of Full Text: |
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Abstract: | |||||||
The liver contains a number of tissue-associated lymphocyte populations, of which many have been implicated in the pathogenesis of chronic liver diseases. γδ T cells, particularly the Vδ2neg subset, are known to comprise a substantial proportion of tissue-associated lymphocytes, although their immunobiology remains poorly understood. Here, the localisation, TCR diversity, immunophenotype and function of human intrahepatic γδ T cells was explored with an emphasis on highlighting any potential role in chronic liver disease and also to further understanding of tissue-associated γδ T cells, using the liver as a model tissue. Intrahepatic γδ T cells were predominantly localised in the sinusoids and did not increase in frequency with chronic inflammation. Vδ2neg cells exhibited private TCR clonal focussing, with complex CDR3 regions suggestive of antigen-driven expansions, concordant with a loss of naive-like CD27hi cells present in the periphery. Expanded clonotypes were phenotypically TEM- or TEMRA-like, with TEMRA-like clonotypes shared between liver and blood and resembling vasculature-associated virus-specific CD8⁺ T cells while TEM clonotypes were identified only in the liver and resembled tissue-resident CD8⁺ T cells. These findings suggest that disease has minimal impact on intrahepatic γδ T cells, while supporting an adaptive paradigm for these cells in the formation of tissue-associated subsets.
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Supervisor: | Not available | Sponsor: | Not available | ||||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||||
EThOS ID: | uk.bl.ethos.753083 | DOI: | Not available | ||||
Keywords: | QR180 Immunology ; RB Pathology | ||||||
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