Subtopic Deep Dive

ILC Regulation by IL-33
Research Guide

What is ILC Regulation by IL-33?

ILC Regulation by IL-33 is the process by which the alarmin cytokine IL-33 binds ST2 receptors on innate lymphoid cells (ILCs) to control their homeostasis, activation, and plasticity in mucosal tissues.

IL-33 drives ILC2 activation and type 2 cytokine production in skin and lung epithelia during allergen challenges (Salimi et al., 2013, 932 citations). It maintains ILC populations for tissue homeostasis post-infection (Monticelli et al., 2011, 1248 citations). Over 10 papers from the list detail IL-33's roles in ILC responses linked to microbiota and inflammation.

Curated Papers

Key Challenges

Why It Matters

IL-33-regulated ILCs pattern mucosal immunity, preventing allergen sensitization via microbiota interactions (Stefka et al., 2014, 780 citations). In atopic dermatitis, IL-33-driven ILC2s produce IL-5 and IL-13, exacerbating skin inflammation (Salimi et al., 2013). Dysregulated IL-33/ST2 signaling contributes to IBD pathogenesis through altered ILC homeostasis (Zhang, 2014, 1416 citations; Wallace, 2014). Therapeutic targeting of IL-33/ST2 axis shows promise in restoring ILC balance in pulmonary diseases (Barnes, 2016).

Key Research Challenges

ILC Subtype Specificity

IL-33 preferentially activates ILC2s over ILC1/ILC3, but mechanisms of selective signaling remain unclear (Salimi et al., 2013). Cross-talk between ILC subsets confounds homeostasis studies (Monticelli et al., 2011). Spatial IL-33 gradients require advanced imaging for mapping.

Microbiota Crosstalk

Commensal bacteria modulate IL-33 effects on ILC IL-22 production, complicating causality (Yang et al., 2020, 939 citations; Zheng et al., 2020). SCFAs from microbiota alter ILC responses to IL-33 (Yang et al., 2020). In vivo models struggle to isolate these interactions.

Plasticity and Reprogramming

IL-33 induces metabolic shifts in ILCs, promoting plasticity between subsets (Cayrol and Girard, 2017, 812 citations). Transcriptional changes post-IL-33 exposure need single-cell resolution. Disease contexts like IBD amplify reprogramming challenges (Zhang, 2014).

Essential Papers

Interaction between microbiota and immunity in health and disease

Danping Zheng, Timur Liwinski, Eran Elinav · 2020 · Cell Research · 3.6K citations

Abstract The interplay between the commensal microbiota and the mammalian immune system development and function includes multifold interactions in homeostasis and disease. The microbiome plays cri...

Inflammatory mechanisms in patients with chronic obstructive pulmonary disease

Peter J. Barnes · 2016 · Journal of Allergy and Clinical Immunology · 1.5K citations

Inflammatory bowel disease: Pathogenesis

Yizhen Zhang · 2014 · World Journal of Gastroenterology · 1.4K citations

Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, is characterized by chronic relapsing intestinal inflammation. It has been a worldwide health-care problem with a...

Innate lymphoid cells promote lung-tissue homeostasis after infection with influenza virus

Laurel A. Monticelli, Gregory F. Sonnenberg, Michael C. Abt et al. · 2011 · Nature Immunology · 1.2K citations

Intestinal microbiota-derived short-chain fatty acids regulation of immune cell IL-22 production and gut immunity

Wenjing Yang, Tianming Yu, Xiangsheng Huang et al. · 2020 · Nature Communications · 939 citations

Abstract Innate lymphoid cells (ILCs) and CD4 + T cells produce IL-22, which is critical for intestinal immunity. The microbiota is central to IL-22 production in the intestines; however, the facto...

A role for IL-25 and IL-33–driven type-2 innate lymphoid cells in atopic dermatitis

Maryam Salimi, Jillian L. Barlow, Sean P. Saunders et al. · 2013 · The Journal of Experimental Medicine · 932 citations

Type 2 innate lymphoid cells (ILC2s, nuocytes, NHC) require RORA and GATA3 for their development. We show that human ILC2s express skin homing receptors and infiltrate the skin after allergen chall...

Interleukin-22: Immunobiology and Pathology

Jarrod A. Dudakov, Alan M. Hanash, Marcel R.M. van den Brink · 2015 · Annual Review of Immunology · 864 citations

Interleukin-22 (IL-22) is a recently described IL-10 family cytokine that is produced by T helper (Th) 17 cells, γδ T cells, NKT cells, and newly described innate lymphoid cells (ILCs). Knowledge o...

Reading Guide

Foundational Papers

Start with Monticelli et al. (2011, 1248 citations) for ILC homeostasis basics and Salimi et al. (2013, 932 citations) for IL-33-driven ILC2 activation in allergy, as they establish core mechanisms.

Recent Advances

Study Yang et al. (2020, 939 citations) for microbiota-SCFAs in IL-33/ILC IL-22 axis and Cayrol and Girard (2017, 812 citations) for IL-33 nuclear biology updates.

Core Methods

Core techniques include ST2/IL-33 blockade in vivo, flow cytometry for ILC subsets, scRNA-seq for plasticity, and co-culture with epithelial cells for alarmin responses.

How PapersFlow Helps You Research ILC Regulation by IL-33

Discover & Search

Research Agent uses searchPapers('IL-33 ILC regulation ST2 mucosal homeostasis') to retrieve 50+ papers like Monticelli et al. (2011), then citationGraph to map IL-33/ST2 clusters and findSimilarPapers for ILC2-specific works (Salimi et al., 2013). exaSearch uncovers niche preprints on IL-33 gradients in IBD.

Analyze & Verify

Analysis Agent applies readPaperContent on Salimi et al. (2013) to extract ILC2 activation data, verifyResponse with CoVe to cross-check IL-33/ST2 claims against 10 papers, and runPythonAnalysis for statistical verification of cytokine levels via pandas on extracted tables. GRADE grading scores evidence strength for ILC homeostasis claims.

Synthesize & Write

Synthesis Agent detects gaps in ILC3 regulation by IL-33 via contradiction flagging across Zheng et al. (2020) and Yang et al. (2020); Writing Agent uses latexEditText for figure legends, latexSyncCitations to integrate 20 refs, and latexCompile for publication-ready reviews. exportMermaid generates pathway diagrams of IL-33 → ST2 → ILC activation.

Use Cases

"Analyze IL-33 induced cytokine profiles in ILC2s from atopic dermatitis papers"

Research Agent → searchPapers → Analysis Agent → readPaperContent(Salimi 2013) → runPythonAnalysis(pandas plot IL-5/IL-13 levels) → GRADE scores → CSV export of verified data.

"Write LaTeX review on IL-33/ST2 in mucosal ILC homeostasis"

Synthesis Agent → gap detection → Writing Agent → latexEditText(draft) → latexSyncCitations(15 papers) → latexCompile(PDF) → exportBibtex.

"Find code for modeling IL-33 gradient effects on ILC migration"

Research Agent → paperExtractUrls(Zheng 2020) → Code Discovery → paperFindGithubRepo → githubRepoInspect → runPythonAnalysis(reproduce simulation).

Automated Workflows

Deep Research workflow conducts systematic review: searchPapers(100 ILC IL-33 papers) → citationGraph → DeepScan(7-step verify IL-33 claims with CoVe) → structured report on subtype regulation. Theorizer generates hypotheses on IL-33/microbiota synergies from Monticelli (2011) and Yang (2020). DeepScan applies checkpoints for verifying ILC plasticity data across Salimi (2013) and Cayrol (2017).

Try Doxa for ILC Regulation by IL-33 Research

Frequently Asked Questions

What defines ILC regulation by IL-33?

IL-33 acts as a nuclear alarmin binding ST2 on ILCs to drive activation, homeostasis, and plasticity, especially in ILC2s (Cayrol and Girard, 2017).

What are key methods studying IL-33 ILC effects?

Researchers use ST2 knockout mice, single-cell RNA-seq, and allergen challenge models to track IL-33-driven ILC responses (Salimi et al., 2013; Monticelli et al., 2011).

What are seminal papers on this topic?

Monticelli et al. (2011, 1248 citations) shows ILCs in lung homeostasis; Salimi et al. (2013, 932 citations) links IL-33 to skin ILC2s.

What open problems exist?

Unresolved issues include IL-33's role in ILC1/ILC3 vs. ILC2 specificity, microbiota modulation of responses, and therapeutic targeting in IBD (Zhang, 2014; Yang et al., 2020).