Non-redundant functions of group 2 innate lymphoid cells

Citation

Verified title: Non-redundant functions of group 2 innate lymphoid cells
Publication year: 2022
DOI: 10.1038/s41586-022-05395-5
Metadata source: crossref-doi (confidence: high)
Original local title: Non-redundant functions of group 2 innate lymphoid cells

Ingest Mode

Mode: focused manual crystallization mode
Meaning: this source page was manually reviewed for source text, model context, assay directness, and claim boundaries.
Durable synthesis status: selected source-specific claims were propagated into entity/topic/digest pages only where evidence strength and context labels are preserved.

Source Type

primary genetic mouse study defining ILC2-specific non-redundant functions
Evidence profile: Nmur1-based ILC2 targeting, ILC2-deficient mouse systems, steady-state eosinophil effects, and challenge models showing failure of appropriate type 2 immunity with skewing toward non-protective type 3 responses.
Knowledge note status: source-reviewed evidence note suitable for ILC2 identity and non-redundancy framing.

Evidence Profile

Overall confidence: high for source-specific mouse evidence that ILC2s have non-redundant functions even when adaptive lymphocytes are present.
Evidence tags: #source/primary #species/mouse #tissue/lung #tissue/gut #cell/ILC2 #cell/ILC3 #assay/KO #assay/flow #assay/RNAseq #outcome/homeostasis #outcome/infection #outcome/inflammation #axis/ILC_lung_homeostasis #status/focused_crystallization
Primary biological axis: selective ILC2 deficiency reveals baseline and challenge-state functions that cannot be fully replaced by adaptive type 2 cells.

Why It Matters Here

This source strengthens the entity-level claim that ILC2s are not merely redundant Th2-like cells. For lung wiki use, it is most useful as a cell-identity and non-redundancy source rather than a lung-disease-specific paper.

Key Findings

The study generated mouse systems allowing selective disruption of ILC2s using Nmur1-linked targeting logic.
ILC2-deficient mice showed decreased eosinophil counts at steady state and impaired IL-5/IL-13-related ILC2 output.
During challenge, loss of ILC2s impaired appropriate type 2 immunity and was associated with a non-protective type 3 response in the reported model.
The paper supports ILC2 non-redundancy but should be used cautiously for pulmonary disease unless the specific tissue/model is stated.

Claim-Level Confidence

High confidence: ILC2s have non-redundant mouse immune functions under the reported genetic and challenge systems.
Medium confidence: the source supports lung ILC2 identity and tissue distribution, but its disease conclusions should not be overextended to human asthma.
Low confidence: this source alone should not be used to classify human airway ILC2/ILC3 boundary states.

Methods and Context

Species/context: mouse genetic targeting and immune challenge systems across multiple tissues.
Assay directness: strong for ILC2-selective genetic perturbation; context-dependent for lung disease interpretation.
Best wiki use: ILC2 entity non-redundancy, baseline eosinophil support, and type 2/type 3 balance framing.

Caveats

This is not primarily a human asthma source.
Nmur1-linked targeting is powerful but should be interpreted within the authors' validation boundaries.
Keep cell identity claims separate from disease-endotype claims.

Contradiction and Supersession

Contradiction status: reinforces, rather than contradicts, ILC2-specific disease sources.
Supersession status: not superseded; useful as a foundation for ILC2 non-redundancy.