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Characterization of CXCR5 + CD8 + T-cells in humanized NSG mice.
- Source :
-
Immunobiology [Immunobiology] 2020 Mar; Vol. 225 (2), pp. 151885. Date of Electronic Publication: 2019 Nov 29. - Publication Year :
- 2020
-
Abstract
- Humanized NOD/SCID/IL-2 receptor γ-chain <superscript>null</superscript> (huNSG) mice recapitulate some features of human T-cell populations that can be exploited in basic and pre-clinical research. CXCR5 <superscript>+</superscript> T CD8 <superscript>+</superscript> T-cells play an important role in the control of viral infections and tumors. Indeed, they have been associated with low-level HIV replication, making them a possible novel correlate of protection, and potentially useful in the eradication of HIV reservoirs. Here, by flow cytometry, we evaluated the reconstitution of CXCR5 <superscript>+</superscript> CD8 <superscript>+</superscript> T-cells in huNSG mice engrafted with CD34 <superscript>+</superscript> hematopoietic stem cells. This population was readily generated in huNSG mice, and where particularly confined to spleen and lymph nodes. These cells exhibited a follicular-like phenotype, with expression of Programmed Death (PD)-1, Inducible T-cell costimulatory (ICOS), and absence of CCR7. Moreover, CXCR5 <superscript>+</superscript> CD8 <superscript>+</superscript> T-cells had a higher expression of interleukin (IL)-21 and a higher cytotoxic potential compared with CXCR5 <superscript>-</superscript> cells. HIV infection did not affect the frequencies of CXCR5 <superscript>+</superscript> CD8 <superscript>+</superscript> T-cells in secondary lymphoid organs. Finally, taking advantage of the high proportion of naïve T-cells in huNSG mice, we evaluated the in vitro response of splenic T-cells to the follicular profile-polarizing cytokines Transforming Growth Factor (TGF)-β1 and IL-23. After in vitro treatment, there was an increase in CXCR5 <superscript>+</superscript> CD8 <superscript>+</superscript> T-cells, which exhibited high levels of PD-1, CD40 L and low expression of CCR7. Thus, there is a reconstitution of CXCR5 <superscript>+</superscript> CD8 <superscript>+</superscript> T-cells in huNSG mice, supporting the use of this model for exploring the biology and role of this cell population in healthy and diseased conditions.<br /> (Copyright © 2019 The Authors. Published by Elsevier GmbH.. All rights reserved.)
- Subjects :
- Animals
Cells, Cultured
Flow Cytometry
HIV Infections immunology
Hematopoietic Stem Cells immunology
Humans
Inducible T-Cell Co-Stimulator Protein immunology
Interleukins immunology
Lymph Nodes immunology
Mice
Mice, Inbred NOD
Mice, SCID
Programmed Cell Death 1 Receptor immunology
Spleen immunology
T-Lymphocytes, Helper-Inducer immunology
CD8-Positive T-Lymphocytes immunology
Receptors, CXCR5 immunology
Subjects
Details
- Language :
- English
- ISSN :
- 1878-3279
- Volume :
- 225
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Immunobiology
- Publication Type :
- Academic Journal
- Accession number :
- 31836302
- Full Text :
- https://doi.org/10.1016/j.imbio.2019.11.020