Essential role of CD4+ T cells for the activation of group 2 innate lymphoid cells during respiratory syncytial virus infection in mice.

Abstract:

:Aim: To investigate whether and how CD4+ T cells contribute to ILC2 activation during respiratory syncytial virus (RSV) infection. Methods: The methods of flow cytometry, quantitative PCR and ELISA were used in the present study. Results: Depletion of CD4+ T cells diminished the numbers of lung ILC2s as well as their ability to produce type 2 cytokines. CD4+ T cell-mediated ILC2 activation is related to IL-2. The main cellular source of IL-2 was CD4+ T cells. Depletion of CD4+ T cells decreased IL-2 levels in the lungs of RSV-infected mice. IL-2 can directly stimulate ILC2 proliferation and promote ILC2s to produce cytokines. Treatment of mice with neutralizing anti-IL-2 monoclonal antibodies diminished ILC2 activation. Conclusion: These results suggest that CD4+ T cells contribute to RSV-induced ILC2 activation partly via producing IL-2.

journal_name

Immunotherapy

journal_title

Immunotherapy

authors

Han X,Bai S,Cui Y,Zhu W,Zhao N,Liu B

doi

10.2217/imt-2019-0084

subject

Has Abstract

pub_date

2019-10-01 00:00:00

pages

1303-1313

issue

15

eissn

1750-743X

issn

1750-7448

journal_volume

11

pub_type

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