The deficiency in Th2-like Tfh cells affects the maturation and quality of HIV-specific B cell response in viremic infection.
Détails
Télécharger: 36091040_BIB_3A9147719CB5.pdf (4539.72 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_3A9147719CB5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
The deficiency in Th2-like Tfh cells affects the maturation and quality of HIV-specific B cell response in viremic infection.
Périodique
Frontiers in immunology
ISSN
1664-3224 (Electronic)
ISSN-L
1664-3224
Statut éditorial
Publié
Date de publication
2022
Peer-reviewed
Oui
Volume
13
Pages
960120
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Publication Status: epublish
Résumé
Optimal T follicular helper (Tfh) cells function is important to promote the development of germinal centers and maturation of high affinity antigen-specific B cells. We have found that the expression of CXCR3 defines distinct Tfh subsets: CXCR3 <sup>+</sup> Th1-like Tfh cells mainly producing single IFN-γ and dual IL-21/IFN-γ and CXCR3 <sup>-</sup> Th2-like Tfh cells mainly producing single IL-4 and dual IL-21/IL-4 cytokines. CXCR3 <sup>-</sup> Th2-like Tfhs are significantly reduced during ongoing HIV replication. While the percentage of Th2-like Tfh cells correlates with that of total and cycling HIV-specific B cells, the percentage of CXCR3 <sup>+</sup> Th1-like Tfhs correlates with HIV-specific B cells expressing T-bet and CXCR3. Of note, only IL-4 and IL-21 cytokines boosted efficient maturation of HIV-specific B cells while IFN-γ induced expression of T-bet and CXCR3 in B cells. Interestingly, total and HIV-specific CXCR3 <sup>+</sup> B cells showed lower rate of somatic hypermutation, as compared to CXCR3 <sup>-</sup> B cells. Therefore, the imbalance in Th2/Th1-like Tfhs affects B cell responses in viremic HIV infection.
Mots-clé
Cytokines/metabolism, Germinal Center/metabolism, HIV Infections/metabolism, Humans, Interleukin-4/metabolism, T Follicular Helper Cells, Viremia, HIV-1 infection, T helper cell, follicular T helper cells, germinal center B cells (GC B cells), lymph nodes
Pubmed
Web of science
Open Access
Oui
Création de la notice
20/09/2022 11:52
Dernière modification de la notice
27/08/2024 8:50