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Uddin S, Amour A, Lewis DJ, Edwards CD, Williamson MG, Hall S, Lione LA, Hessel EM. PI3Kδ inhibition prevents IL33, ILC2s and inflammatory eosinophils in persistent airway inflammation. BMC Immunol 2021; 22:78. [PMID: 34920698 PMCID: PMC8684271 DOI: 10.1186/s12865-021-00461-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 09/30/2021] [Indexed: 01/30/2023] Open
Abstract
Background Phosphoinositide-3-kinase-delta (PI3Kδ) inhibition is a promising therapeutic approach for inflammatory conditions due to its role in leucocyte proliferation, migration and activation. However, the effect of PI3Kδ inhibition on group 2 innate lymphoid cells (ILC2s) and inflammatory eosinophils remains unknown. Using a murine model exhibiting persistent airway inflammation we sought to understand the effect of PI3Kδ inhibition, montelukast and anti-IL5 antibody treatment on IL33 expression, group-2-innate lymphoid cells, inflammatory eosinophils, and goblet cell metaplasia. Results Mice were sensitised to house dust mite and after allowing inflammation to resolve, were re-challenged with house dust mite to re-initiate airway inflammation. ILC2s were found to persist in the airways following house dust mite sensitisation and after re-challenge their numbers increased further along with accumulation of inflammatory eosinophils. In contrast to montelukast or anti-IL5 antibody treatment, PI3Kδ inhibition ablated IL33 expression and prevented group-2-innate lymphoid cell accumulation. Only PI3Kδ inhibition and IL5 neutralization reduced the infiltration of inflammatory eosinophils. Moreover, PI3Kδ inhibition reduced goblet cell metaplasia. Conclusions Hence, we show that PI3Kδ inhibition dampens allergic inflammatory responses by ablating key cell types and cytokines involved in T-helper-2-driven inflammatory responses. Supplementary Information The online version contains supplementary material available at 10.1186/s12865-021-00461-5.
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Affiliation(s)
- Sorif Uddin
- Immunology Research Unit, Respiratory Therapy Area Unit, GSK Medicines Research Centre, GlaxoSmithKline Research and Development Limited, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK.
| | - Augustin Amour
- Immunology Research Unit, Respiratory Therapy Area Unit, GSK Medicines Research Centre, GlaxoSmithKline Research and Development Limited, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - David J Lewis
- In Vivo/In Vitro Translation, GlaxoSmithKline Research and Development Limited, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Chris D Edwards
- In Vivo/In Vitro Translation, GlaxoSmithKline Research and Development Limited, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Matthew G Williamson
- Immunology Research Unit, Respiratory Therapy Area Unit, GSK Medicines Research Centre, GlaxoSmithKline Research and Development Limited, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Simon Hall
- Immunology Research Unit, Respiratory Therapy Area Unit, GSK Medicines Research Centre, GlaxoSmithKline Research and Development Limited, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Lisa A Lione
- Department of Clinical and Pharmaceutical Sciences, School of Life and Medical Sciences, University of Hertfordshire, College Lane, Hatfield, Hertfordshire, AL10 9AB, UK
| | - Edith M Hessel
- Eligo Bioscience, 29 Rue du Faubourg Saint-Jacques, 75014, Paris, France
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Ade S, Awanou B, Wachinou A, Kouchadé V, Adjobimey M, Adjibode O, Dovonou A, Agodokpessi G. Prise en charge de l’asthme « sévère » au Bénin, un pays aux ressources limitées. REVUE FRANCAISE D ALLERGOLOGIE 2017. [DOI: 10.1016/j.reval.2017.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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