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Immunology and Microbiology · Research topic

Open research questions in IL-33, ST2, and ILC Pathways

126 unresolved questions extracted from the limitations and future-work sections of 224 IL-33, ST2, and ILC Pathways papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The paper identifies a gap in the understanding of how ILC3s contribute to disease pathogenesis. It highlights the need for further research into the regulatory mechanisms that control ILC3 function. The paper also notes that the exact mechanisms by which ILC3s are regulated are not fully understood.

    ILC3s as central regulators of mucosal homeostasis and disease pathogenesis (Review) · 2026 · DOI

  • continued investigation into the biological characteristics of ILCs and their mechanisms of action in diseases will lay a theoretical foundation for the development of novel immunotherapeutic strategies - advancing the development of immunotherapeutic strategies targeting ILC reprogramming

    The shifting balance: innate lymphoid cell plasticity in chronic gut diseases · 2026 · DOI

  • the specific functions and reprogramming mechanisms of ILC subsets remain controversial - the mechanisms underlying the reprogramming of ILCs are not fully understood

    The shifting balance: innate lymphoid cell plasticity in chronic gut diseases · 2026 · DOI

  • Serum IL-33 concentrations were higher in patients with PA than in controls; however, the source, disease specificity, and clinical relevance of this elevation remain uncertain.

    IL33 gene polymorphisms and circulating IL-33 levels in pituitary adenoma: a case–control study · 2026 · DOI

  • Interleukin-33 (IL-33), an immune-related cytokine, has been implicated in tumor-associated inflammation; however, its role in pituitary adenomas remains unclear.

    IL33 gene polymorphisms and circulating IL-33 levels in pituitary adenoma: a case–control study · 2026 · DOI

  • However, how sex hormones impact the VAT inflammatory environment to curtail obesity-associated pathology remain incompletely understood.

    Context-dependent roles of sex hormone signaling in controlling visceral adipose tissue Treg heterogeneity and clonal expansion · 2026 · DOI

  • The fate of circulating ILC2s and their relationship with lung-resident ILC2s is not well understood.

    Single-cell analysis of recruited ILC2 cell fate during transition from circulation to establishment of tissue residency · 2026 · DOI

  • Cellular metabolic requirements associated with this transition remain poorly understood.

    IL-33 promotes transcriptional and metabolic adaptations of tissue-resident Th2 cells · 2026 · DOI

  • The role of ST2 in HCM remains unclear, and IL-33/ST2 pathway and broader inflammatory responses may be critical in HCM.

    Interplay of ST2 downregulation and inflammatory dysregulation in hypertrophic cardiomyopathy pathogenesis · 2025 · DOI

  • Therefore, the sex-specific effects of HCMV infection on the number and function of ILCs should be further investigated.

    Characterization of innate lymphoid cells in infants with human cytomegalovirus infection · 2025 · DOI

  • Although RAR-related orphan receptor α (RORα) is required for ILC2s and some ILC3s, its role in ILC1 development remains controversial.

    The transcription factor RORα is required for the development of type 1 innate lymphoid cells in adult bone marrow · 2025 · DOI

  • Although STAT5 has tyrosine and serine phosphorylation sites, the mechanisms responsible for phosphorylating serine residues and their significance in ILC2s remain unclear.

    Cyclin-dependent kinase (CDK) 8 and its paralog CDK19 develop group 2 innate lymphoid cell–related lung fibrosis by activating STAT5 · 2025 · DOI

  • The role of prostaglandin I2 (PGI2), a cyclooxygenase (COX) pathway metabolite, in modulating these trained ILC2 responses remains unclear.

    PGI2 restricts trained ILC2 responses in allergic inflammation · 2025 · DOI

  • However, it remains unclear whether IL-33 controls key aspects of cutaneous immunity against skin-penetrating parasites.

    Myeloid-derived IL-33 drives γδ T cell–dependent resistance against cutaneous infection by Strongyloides ratti · 2025 · DOI

  • While much has been done to define factors that regulate the development, differentiation, and effector functions of both cell types, little is known about what controls gILC1 homeostasis.

    Type I interferon regulation of group I ILC subsets during both homeostasis and cytomegalovirus infection · 2025 · DOI

  • Although environmental exposures are risk factors for severe lung disease, specific drivers of persistent epithelial and immune dysfunction are poorly understood.

    An ILC2-chitinase circuit restores lung homeostasis after epithelial injury 2045 · 2025 · DOI

  • However, most microbiota-derived metabolites, their regulation by diet, and their immunoregulatory effects remain unknown.

    Dietary fiber and microbiota-derived bile acids regulate type 2 immune response and metabolic homeostasis 3598 · 2025 · DOI

  • However, the mechanism by which SFB and IECs induce IFNγ production by ILC1s is poorly understood.

    The role of Segmented Filamentous Bacteria and intestinal epithelial cells in the induction of IFNγ production by ILC1s 4270 · 2025 · DOI

  • Gut-derived immune cells significantly influence various diseases, but the mechanisms linking intestinal immune cells and lung responses within the gut-lung axis remain unclear.

    Bidirectional crosstalk between gut and lung immunity: Migration of gut IgA plasma cells during allergic asthma 9176 · 2025 · DOI

  • While much has been done to define factors that regulate the development, differentiation and effector functions of both cell types, little is known about what controls gILC1 homeostasis.

    Opposing role of type-I IFN for cNK and ILC1 during homeostasis and infection 2491 · 2025 · DOI

  • Overall, B cells maintained intestinal homeostasis by interacting with ILC3s and promoting ILF formation and could be explored as cell-based therapeutics for IBD.

    B cells produce IL-27 to interact with types 3 innate lymphoid cells and mediate the formation of lymphoid follicles for IgA production and inflammation resolution in the gut 4035 · 2025 · DOI

  • However, the mechanisms by which allergen exposure triggers IL33 release from airway epithelial cells remain unclear.

    Integrated analysis reveals that EGR1 promotes epithelial IL33 production in T2 asthma · 2025 · DOI

  • However, to the best of our knowledge, no studies have examined the possible association of TE expression and its potential role in MS pathogenesis at the single-cell level.

    Single-cell RNA sequencing of cerebrospinal fluid reveals the expansion of innate lymphoid cells with upregulated transposable elements in multiple sclerosis · 2025 · DOI

  • However, the processes that govern homeostatic eosinophil accumulation and tissue-specific adaptation, and their functional significance, remain poorly defined.

    Nutrient-derived signals regulate eosinophil adaptation to the small intestine · 2024 · DOI

  • However, the detailed mechanisms underlying the effects of OLFM4 on ILC3-mediated colitis remain unclear.

    OLFM4 modulates intestinal inflammation by promoting IL-22+ILC3 in the gut · 2024 · DOI

Most-cited papers in IL-33, ST2, and ILC Pathways

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126 open questions have been extracted from the limitations and future-work passages of 224 IL-33, ST2, and ILC Pathways papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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