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Updated: May 14, 2026
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Isolation of Group 2 Innate Lymphoid Cells from Mouse Nasal Mucosa to Detect the Expression of CD226
Published on: May 10, 2022
The long non-coding RNA Dreg1 is required for optimal ILC2 development
Sara Quon1,2, Adelynn Tang3,4,5, Nadia Iannarella1,2
1The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.
Elife
|May 13, 2026
Summary
The non-coding RNA Dreg1 is crucial for the development of group 2 innate lymphoid cells (ILC2s). Its absence selectively reduces ILC2 numbers by impacting Gata3 expression in early progenitors.
Area of Science:
- Immunology
- Developmental Biology
- Transcriptional Regulation
Background:
- Gata3 is a key transcription factor for immune cell development, including T cells, NK cells, and ILCs.
- Precise regulation of Gata3 expression is vital for immune cell lineage commitment.
- The Gata3 locus contains complex regulatory elements, including distal enhancers.
Purpose of the Study:
- To investigate the function of the non-coding RNA Dreg1, located near the Gata3 locus.
- To determine Dreg1's role in immune cell development, particularly ILC2s.
- To elucidate the regulatory mechanisms involving Dreg1 in Gata3 expression.
Main Methods:
- Genetic manipulation in mice to excise the Dreg1 locus.
- Analysis of immune cell populations (T cells, NK cells, ILCs) in Dreg1-deficient mice.
- Chromatin profiling (H3K27ac) and gene expression analysis.
- Investigation of Tcf1-dependent regulation of Dreg1.
- Comparative analysis of Dreg1 homologues in human ILC2s.
Main Results:
- Selective reduction of group 2 ILCs (ILC2s) in Dreg1-deficient mice, with other immune lineages unaffected.
- Increased common innate lymphoid cell progenitors (ILCPs) and decreased ILC2 progenitors (ILC2Ps) in bone marrow.
- Evidence of an early developmental bottleneck affecting Gata3 levels in progenitors.
- Dreg1 locus accessibility in early progenitors and H3K27ac decoration in an ILCP-specific, Tcf1-dependent manner.
- Dreg1 expression and its homologues are conserved in human ILC2s.
Conclusions:
- Dreg1 is a Tcf1-dependent non-coding RNA essential for optimal ILC2 development.
- Dreg1 plays a critical role in fine-tuning Gata3 expression levels required for ILC2 lineage commitment.
- Dreg1 acts early in development to ensure sufficient Gata3 levels for ILC2 progenitors.
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