Identification and Isolation of Type II NKT Cell Subsets in Human Blood and Liver
BackgroundSteatotic livers are more prone to rejection, but are often transplanted owing to the shortage of available organs. Type II NKT (T2NKT) cells are liver-resident lymphocytes that react to lipids presented by CD1d. The role of T2NKT cells in rejection of fatty liver transplants is unclear, p...
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| Format: | Article |
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Frontiers Media S.A.
2022-06-01
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| Series: | Frontiers in Immunology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fimmu.2022.898473/full |
| _version_ | 1818554499971678208 |
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| author | Jordi Yang Zhou Jordi Yang Zhou Jens M. Werner Gunther Glehr Edward K. Geissler Edward K. Geissler Edward K. Geissler Edward K. Geissler James A. Hutchinson Katharina Kronenberg |
| author_facet | Jordi Yang Zhou Jordi Yang Zhou Jens M. Werner Gunther Glehr Edward K. Geissler Edward K. Geissler Edward K. Geissler Edward K. Geissler James A. Hutchinson Katharina Kronenberg |
| author_sort | Jordi Yang Zhou |
| collection | DOAJ |
| description | BackgroundSteatotic livers are more prone to rejection, but are often transplanted owing to the shortage of available organs. Type II NKT (T2NKT) cells are liver-resident lymphocytes that react to lipids presented by CD1d. The role of T2NKT cells in rejection of fatty liver transplants is unclear, partly because of a lack of T2NKT cell markers and their very low frequency in blood. Here, we quantify human T2NKT cells in blood and liver tissue by flow cytometry and provide a strategy for their enrichment and expansion.MethodsHuman T2NKT cells were identified as CD3+ CD56+ CD161+ TCR-γᵹ- TCRVα7.2- and TCRVα24- cells. T2NKT cells were enriched from blood by sequential positive selection using CD56 and CD3 microbeads. These were subsequently FACS-sorted to purity then expanded in vitro for 3 weeks using anti-CD3/CD28 beads and TGF-β1.ResultsThe frequency of human T2NKT cells in blood was very low (0.8 ± 0.4% of CD3+ T cells) but they were a more abundant population in liver (6.3 ± 0.9%). Enriched T2NKT cells expressed the transcription factor PLZF. A novel subset of FoxP3+ T2NKT cells was discovered in blood and liver tissue. T2NKT cells were expanded in culture by 15- to 28-fold over 3 weeks, during which time they maintained expression of all identifying markers, including PLZF and FoxP3.ConclusionsOur work defines new strategies for identifying and isolating T2NKT cells from human blood and liver tissue. We showed that this rare population can be expanded in vitro in order to obtain experimentally amenable cell numbers. Further, we identified a novel T2NKT cell subset that stably expresses FoxP3, which might play a role in regulating innate-like lymphocyte responses in steatotic liver transplants. |
| first_indexed | 2024-12-12T09:40:29Z |
| format | Article |
| id | doaj.art-6ac725fa8c6a4f2492025c2c655286af |
| institution | Directory Open Access Journal |
| issn | 1664-3224 |
| language | English |
| last_indexed | 2024-12-12T09:40:29Z |
| publishDate | 2022-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Immunology |
| spelling | doaj.art-6ac725fa8c6a4f2492025c2c655286af2022-12-22T00:28:34ZengFrontiers Media S.A.Frontiers in Immunology1664-32242022-06-011310.3389/fimmu.2022.898473898473Identification and Isolation of Type II NKT Cell Subsets in Human Blood and LiverJordi Yang Zhou0Jordi Yang Zhou1Jens M. Werner2Gunther Glehr3Edward K. Geissler4Edward K. Geissler5Edward K. Geissler6Edward K. Geissler7James A. Hutchinson8Katharina Kronenberg9Department of Surgery, University Hospital Regensburg, Regensburg, GermanyLeibniz Institute for Immunotherapy, Regensburg, GermanyDepartment of Surgery, University Hospital Regensburg, Regensburg, GermanyDepartment of Surgery, University Hospital Regensburg, Regensburg, GermanyDepartment of Surgery, University Hospital Regensburg, Regensburg, GermanyLeibniz Institute for Immunotherapy, Regensburg, GermanyFraunhofer-Institute for Toxicology and Experimental Medicine Institute for Toxicology and Experimental Medicine-Regensburg (ITEM-R), Regensburg, GermanyRegensburg International Graduate School of Life Sciences, University of Regensburg, Regensburg, GermanyDepartment of Surgery, University Hospital Regensburg, Regensburg, GermanyDepartment of Surgery, University Hospital Regensburg, Regensburg, GermanyBackgroundSteatotic livers are more prone to rejection, but are often transplanted owing to the shortage of available organs. Type II NKT (T2NKT) cells are liver-resident lymphocytes that react to lipids presented by CD1d. The role of T2NKT cells in rejection of fatty liver transplants is unclear, partly because of a lack of T2NKT cell markers and their very low frequency in blood. Here, we quantify human T2NKT cells in blood and liver tissue by flow cytometry and provide a strategy for their enrichment and expansion.MethodsHuman T2NKT cells were identified as CD3+ CD56+ CD161+ TCR-γᵹ- TCRVα7.2- and TCRVα24- cells. T2NKT cells were enriched from blood by sequential positive selection using CD56 and CD3 microbeads. These were subsequently FACS-sorted to purity then expanded in vitro for 3 weeks using anti-CD3/CD28 beads and TGF-β1.ResultsThe frequency of human T2NKT cells in blood was very low (0.8 ± 0.4% of CD3+ T cells) but they were a more abundant population in liver (6.3 ± 0.9%). Enriched T2NKT cells expressed the transcription factor PLZF. A novel subset of FoxP3+ T2NKT cells was discovered in blood and liver tissue. T2NKT cells were expanded in culture by 15- to 28-fold over 3 weeks, during which time they maintained expression of all identifying markers, including PLZF and FoxP3.ConclusionsOur work defines new strategies for identifying and isolating T2NKT cells from human blood and liver tissue. We showed that this rare population can be expanded in vitro in order to obtain experimentally amenable cell numbers. Further, we identified a novel T2NKT cell subset that stably expresses FoxP3, which might play a role in regulating innate-like lymphocyte responses in steatotic liver transplants.https://www.frontiersin.org/articles/10.3389/fimmu.2022.898473/fullNKTisolationexpansionFoxP3liversteatotic |
| spellingShingle | Jordi Yang Zhou Jordi Yang Zhou Jens M. Werner Gunther Glehr Edward K. Geissler Edward K. Geissler Edward K. Geissler Edward K. Geissler James A. Hutchinson Katharina Kronenberg Identification and Isolation of Type II NKT Cell Subsets in Human Blood and Liver Frontiers in Immunology NKT isolation expansion FoxP3 liver steatotic |
| title | Identification and Isolation of Type II NKT Cell Subsets in Human Blood and Liver |
| title_full | Identification and Isolation of Type II NKT Cell Subsets in Human Blood and Liver |
| title_fullStr | Identification and Isolation of Type II NKT Cell Subsets in Human Blood and Liver |
| title_full_unstemmed | Identification and Isolation of Type II NKT Cell Subsets in Human Blood and Liver |
| title_short | Identification and Isolation of Type II NKT Cell Subsets in Human Blood and Liver |
| title_sort | identification and isolation of type ii nkt cell subsets in human blood and liver |
| topic | NKT isolation expansion FoxP3 liver steatotic |
| url | https://www.frontiersin.org/articles/10.3389/fimmu.2022.898473/full |
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