What question did this study set out to answer?

To investigate how chronic allergic lung inflammation affects ILC2 functionality and transdifferentiation.

November 1, 2025The Journal of ImmunologyOpen Access

Chronic allergic lung inflammation drives ILC2 dysfunction and transdifferentiation to IL-17A-producing ILC3s, promoting emphysema development 2272

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Mouse model reveals chronic allergic inflammation impairs ILC2 function and promotes COPD, suggesting IL-33 and IL-13 roles.

To investigate how chronic allergic lung inflammation affects ILC2 functionality and transdifferentiation.
Established a chronic allergic lung inflammation mouse model using repeated intranasal Alternaria alternata and papain injections.
Conducted FACS analysis to evaluate ILC2 and ILC3 populations and their responses to cytokines.
Performed histology to assess lung tissue for inflammation and emphysema.
Initial expansion of ILC2s and increased production of IL-5 and IL-13, leading to eosinophilia.
After five weeks, ILC2 numbers decreased, suggesting dysfunction.
Expansion of ILC3s and evidence of ILC2-ILC3 transdifferentiation were observed.
IL-33-KO mice showed prevented ILC2 expansion and ILC3 increase, supporting transdifferentiation hypothesis.

Khijakadze et al. (2025) studied this question.

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November 1, 2025The Journal of ImmunologyOpen Access

View Full Paper

Ask AI

Bookmark

Authors

Mouse model reveals chronic allergic inflammation impairs ILC2 function and promotes COPD, suggesting IL-33 and IL-13 roles.

To investigate how chronic allergic lung inflammation affects ILC2 functionality and transdifferentiation.
Established a chronic allergic lung inflammation mouse model using repeated intranasal Alternaria alternata and papain injections.
Conducted FACS analysis to evaluate ILC2 and ILC3 populations and their responses to cytokines.
Performed histology to assess lung tissue for inflammation and emphysema.
Initial expansion of ILC2s and increased production of IL-5 and IL-13, leading to eosinophilia.
After five weeks, ILC2 numbers decreased, suggesting dysfunction.
Expansion of ILC3s and evidence of ILC2-ILC3 transdifferentiation were observed.
IL-33-KO mice showed prevented ILC2 expansion and ILC3 increase, supporting transdifferentiation hypothesis.

Khijakadze et al. (2025) studied this question.

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