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HIV-1(LAI) Nef blocks the development of hematopoietic stem/progenitor cells into T lymphoid cells
OBJECTIVE: Despite successful antiviral therapy, the recovery of CD4(+) T cells may not be complete in certain HIV-1-infected individuals. In our previous work with humanized mice infected with CXCR4-tropic HIV-1(LAI) (LAI), viral protein Nef was found the major factor determining rapid loss of both...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Lippincott Williams & Wilkins
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8048728/ https://www.ncbi.nlm.nih.gov/pubmed/33587447 http://dx.doi.org/10.1097/QAD.0000000000002837 |
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author | Zou, Wei Xing, Juanjuan Wang, Fen Chen, Xinping Liu, Qian Wang, Jinyong Zou, Shijie Chen, Limin Fu, Xin Zhou, Zhengping Wan, Zhikai |
author_facet | Zou, Wei Xing, Juanjuan Wang, Fen Chen, Xinping Liu, Qian Wang, Jinyong Zou, Shijie Chen, Limin Fu, Xin Zhou, Zhengping Wan, Zhikai |
author_sort | Zou, Wei |
collection | PubMed |
description | OBJECTIVE: Despite successful antiviral therapy, the recovery of CD4(+) T cells may not be complete in certain HIV-1-infected individuals. In our previous work with humanized mice infected with CXCR4-tropic HIV-1(LAI) (LAI), viral protein Nef was found the major factor determining rapid loss of both CD4(+) T cells and CD4(+)CD8(+) thymocytes but its effect on early T-cell development is unknown. The objective of this study is to investigate the influence of LAI Nef on the development of hematopoietic stem/progenitor cells (HSPCs) into T lymphoid cells. DESIGN: HSPC-OP9-DL1 cell co-culture and humanized mouse model was used to investigate the objective of our study in vitro and in vivo. RNA-seq was exploited to study the change of gene expression signature after nef expression in HSPCs. RESULTS: Nef expression in HSPCs was found to block their development into T lymphoid cells both in vitro and in the mice reconstituted with nef-expressing HSPCs derived from human cord blood. More surprisingly, in humanized mice nef expression preferentially suppressed the production of CD4(+) T cells. This developmental defect was not the result of CD34+ cell loss. RNA-seq analysis revealed that Nef affected the expression of 176 genes in HSPCs, including those involved in tumor necrosis factor, Toll-like receptor, and nucleotide-binding oligomerization domain-like receptor signaling pathways that are important for hematopoietic cell development. CONCLUSION: Our results demonstrate that Nef compromises the development of HSPCs into T lymphoid cells, especially CD4(+) T cells. This observation suggests that therapeutics targeting Nef may correct HIV-1-associated hematopoietic abnormalities, especially defects in T-cell development. |
format | Online Article Text |
id | pubmed-8048728 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Lippincott Williams & Wilkins |
record_format | MEDLINE/PubMed |
spelling | pubmed-80487282021-04-19 HIV-1(LAI) Nef blocks the development of hematopoietic stem/progenitor cells into T lymphoid cells Zou, Wei Xing, Juanjuan Wang, Fen Chen, Xinping Liu, Qian Wang, Jinyong Zou, Shijie Chen, Limin Fu, Xin Zhou, Zhengping Wan, Zhikai AIDS Basic Science OBJECTIVE: Despite successful antiviral therapy, the recovery of CD4(+) T cells may not be complete in certain HIV-1-infected individuals. In our previous work with humanized mice infected with CXCR4-tropic HIV-1(LAI) (LAI), viral protein Nef was found the major factor determining rapid loss of both CD4(+) T cells and CD4(+)CD8(+) thymocytes but its effect on early T-cell development is unknown. The objective of this study is to investigate the influence of LAI Nef on the development of hematopoietic stem/progenitor cells (HSPCs) into T lymphoid cells. DESIGN: HSPC-OP9-DL1 cell co-culture and humanized mouse model was used to investigate the objective of our study in vitro and in vivo. RNA-seq was exploited to study the change of gene expression signature after nef expression in HSPCs. RESULTS: Nef expression in HSPCs was found to block their development into T lymphoid cells both in vitro and in the mice reconstituted with nef-expressing HSPCs derived from human cord blood. More surprisingly, in humanized mice nef expression preferentially suppressed the production of CD4(+) T cells. This developmental defect was not the result of CD34+ cell loss. RNA-seq analysis revealed that Nef affected the expression of 176 genes in HSPCs, including those involved in tumor necrosis factor, Toll-like receptor, and nucleotide-binding oligomerization domain-like receptor signaling pathways that are important for hematopoietic cell development. CONCLUSION: Our results demonstrate that Nef compromises the development of HSPCs into T lymphoid cells, especially CD4(+) T cells. This observation suggests that therapeutics targeting Nef may correct HIV-1-associated hematopoietic abnormalities, especially defects in T-cell development. Lippincott Williams & Wilkins 2021-05-01 2021-02-10 /pmc/articles/PMC8048728/ /pubmed/33587447 http://dx.doi.org/10.1097/QAD.0000000000002837 Text en Copyright © 2021 The Author(s). Published by Wolters Kluwer Health, Inc. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0 (https://creativecommons.org/licenses/by-nc-nd/4.0/) |
spellingShingle | Basic Science Zou, Wei Xing, Juanjuan Wang, Fen Chen, Xinping Liu, Qian Wang, Jinyong Zou, Shijie Chen, Limin Fu, Xin Zhou, Zhengping Wan, Zhikai HIV-1(LAI) Nef blocks the development of hematopoietic stem/progenitor cells into T lymphoid cells |
title | HIV-1(LAI) Nef blocks the development of hematopoietic stem/progenitor cells into T lymphoid cells |
title_full | HIV-1(LAI) Nef blocks the development of hematopoietic stem/progenitor cells into T lymphoid cells |
title_fullStr | HIV-1(LAI) Nef blocks the development of hematopoietic stem/progenitor cells into T lymphoid cells |
title_full_unstemmed | HIV-1(LAI) Nef blocks the development of hematopoietic stem/progenitor cells into T lymphoid cells |
title_short | HIV-1(LAI) Nef blocks the development of hematopoietic stem/progenitor cells into T lymphoid cells |
title_sort | hiv-1(lai) nef blocks the development of hematopoietic stem/progenitor cells into t lymphoid cells |
topic | Basic Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8048728/ https://www.ncbi.nlm.nih.gov/pubmed/33587447 http://dx.doi.org/10.1097/QAD.0000000000002837 |
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