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

298 gap statements mined from IL-33, ST2, and ILC Pathways papers in our 7.9M-paper local library, which holds 996 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The development of colorectal cancer is a complex process involving the dysregulation of molecular pathways within the immune system. Tumors employ various mechanisms to evade immune surveillance, making it challenging to develop effective treatments. The paper highlights the need for a comprehensive understanding of molecular interactions to overcome these challenges.

    The Crucial Role of Inflammation and the Immune System in Colorectal Cancer Carcinogenesis: A Comprehensive Perspective · 2024 · DOI

  • There is a need for a comprehensive understanding of the intricate molecular interactions involved in the development of colorectal cancer. The current understanding of the role of inflammation and the immune system in colorectal cancer carcinogenesis is limited. The paper aims to fill this gap by providing a comprehensive perspective on the topic.

    The Crucial Role of Inflammation and the Immune System in Colorectal Cancer Carcinogenesis: A Comprehensive Perspective · 2024 · DOI

  • Dietary fibers are known to modulate intestinal physiology; however, the cellular mechanisms linking dietary fiber intake to epithelial immune responses remain incompletely understood.

    Dietary pectin enhances intestinal antimicrobial protein expression via a tuft cell–ILC2–STAT6 signaling axis · 2026 · DOI

  • However, whether ILC2-mediated inflammation observed in T2DM is also present in SPIDDM remains unclear.

    Differences in group 2 innate lymphoid cells in type 2 or slowly progressive insulin-dependent type 1 diabetes mellitus · 2026 · DOI

  • The mechanisms underlying innate lymphoid cell (ILC) development and function in the neonatal lung remain incompletely defined.

    Single cell atlas of lung-resident innate lymphoid cells shows impact of age and dysbiosis on epigenetic and transcriptomic programming · 2026 · DOI

  • Type 2 cytokine release promotes wound healing and helminth clearance, but it remains unclear whether group 2 innate lymphocytes (ILC2s) and T-helper 2 cells (T H 2) cells have functionally distinct roles during anamnestic immunity.

    Trained ILC2 prevent IL-17-associated lung injury during helminth infection through a serotonin-dependent mechanism · 2026 · DOI

  • However, it remains unclear whether this reflects true ILC plasticity or simply phenotypic changes.

    Eomes fate-labeling reveals a subset of Eomeslo NK cells that exhibits an ILC1-like phenotype · 2026 · DOI

  • Metabolically unhealthy obesity is characterized by chronic inflammation and metabolic dysfunction; however, how intestinal immune organization shapes systemic metabolic outcomes remains unclear.

    A microbiota-driven CCL25–CCR9 axis reprograms intestinal ILC2s in the distal small intestine to promote metabolic dysfunction in obesity · 2026 · DOI

  • Although research has progressed in understanding these cells, multiple aspects of their biology remain poorly understood and difficult to investigate using current available techniques.

    Group 3 innate lymphoid cell-derived CSF2 tunes homeostasis of tissue macrophages and neutrophils · 2025 · DOI

  • Tissue-specific cues optimize CD4 + T cell responses, but the mechanisms regulating intestinal Th2 responses remain unclear.

    Notch-activated basophils support intestinal CD4+ T cell fate and function during Trichuris muris infection · 2025 · DOI

  • Tofacitinib, a JAK/STAT pathway inhibitor, was recently approved for the treatment of ulcerative colitis, yet its effects on the pathogenesis of intestinal infections remain unclear.

    Tofacitinib ameliorates Campylobacter-induced intestinal pathology by suppressing IFNγ producing ILCs and T cells · 2025 · DOI

  • Although the involvement of immune cells in COPD pathogenesis is well established, the contribution of innate lymphoid cells (ILC) remains poorly understood.

    Elastin-derived peptides favor type 2 innate lymphoid cells in chronic obstructive pulmonary disease · 2024 · DOI

  • ILC are a type of innate immune cells that participate in tissue remodeling processes, but their specific role in COPD has not been fully elucidated.

    Elastin-derived peptides favor type 2 innate lymphoid cells in chronic obstructive pulmonary disease · 2024 · DOI

  • However, intestinal ILC3s are reduced during chronic infections, colorectal cancer, or inflammatory bowel disease (IBD), and the mechanisms driving these alterations remain poorly understood.

    RIPK3 and caspase-8 interpret cytokine signals to regulate ILC3 survival in the gut · 2024 · DOI

  • The transcriptomic signatures that shape responses of innate lymphoid cells (ILCs) have been well characterised, however post-transcriptional mechanisms which regulate their development and activity remain poorly understood.

    MicroRNA-142 regulates gut associated lymphoid tissues and group 3 innate lymphoid cells · 2024 · DOI

  • The lack of bibliometric research on allergic diseases and B cells. The complexity of allergic diseases and the need for a comprehensive understanding of the role of B cells. The need for larger sample sizes and multi-center designs in clinical trials.

    Studies on allergic diseases and B cells in the past 20 years: a bibliometric analysis via CiteSpace and VOSviewer · 2026 · DOI

  • Future trials should adopt contemporary methodological frameworks, including larger sample sizes, multi-center designs, and objective endpoints. The paper suggests that supplementing randomized controlled trials with large-scale, multi-center studies anchored by objective outcome measures is likely to become an important trend.

    Studies on allergic diseases and B cells in the past 20 years: a bibliometric analysis via CiteSpace and VOSviewer · 2026 · DOI

  • The exact minimum effective concentration that recapitulates our observed suppressive ILC2 phenotype in vivo, remains to be determined, and will likely rely on a complex grouping of factors that take into account systems with endogenous melatonin rhythms (such that were absent in our studies both in vitro and in vivo with BALBc mice).

    Melatonin suppresses ILC2-driven airway hyperreactivity via glutathione-dependent metabolic reprogramming · 2026 · DOI

  • Further exploration of the pathophysiological roles and balance of the ILC2 regulatory network in kidney diseases is needed. Research on the dynamic migration of ILCs specifically related to the kidney remains scarce. Studies on the clinical applications of ILC-based therapies in CKD are necessary.

    ILC imbalance – a new piece in the gut-kidney axis puzzle · 2026 · DOI

  • The specific immune mechanisms connecting gut microbiota dysbiosis to renal inflammation remain poorly defined. The underlying mechanisms of ILC migration and function in the kidney are not well understood. Further research is needed to explore the pathophysiological roles and balance of the ILC2 regulatory network in kidney diseases.

    ILC imbalance – a new piece in the gut-kidney axis puzzle · 2026 · DOI

  • Further studies are needed to elucidate the mechanisms underlying ILC3 plasticity and antigen presentation. The development of therapeutic strategies targeting the ILC3-epithelium-microbiota axis is a promising area of research. Investigation of the role of Thetis cells in colorectal cancer progression is warranted.

    Plasticity and antigen presentation by group 3 innate lymphoid cells in colorectal cancer · 2026 · DOI

  • The traditional tumor cell-centered, T cell-focused paradigm is being revised to include innate networks at the mucosal interface. There is a need to understand the complex interactions between ILC3, the epithelium, and the microbiota in colorectal cancer progression.

    Plasticity and antigen presentation by group 3 innate lymphoid cells in colorectal cancer · 2026 · DOI

  • The role of IL-33 in orthodontic tooth movement is not well understood. The molecular mechanisms underlying IL-33-mediated orthodontic tooth movement are not fully elucidated.

    IL-33 accelerates orthodontic tooth movement by promoting M1 differentiation of macrophages and osteoclast formation · 2026 · DOI

  • In ulcerative colitis (UC), impaired tolerogenic pathways result in exaggerated immune activation, epithelial dysfunction, and tissue damage; however, the contribution of BCs to disease pathogenesis remains unclear.

    An Altered Glycome Shapes IgA B-Cell Responses and Gut Immunity During Intestinal Inflammation · 2026 · DOI

  • The colonic epithelium expresses IL-33; however, the factors controlling its production and the specific epithelial lineage(s) expressing IL-33 are poorly understood.

    Wnt/β-catenin maintains epithelial IL-33 in the colonic stem and progenitor cell niche and drives its induction in colitis · 2024 · DOI

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

Most recent work

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This page shows what the IL-33, ST2, and ILC Pathways literature already flags as unresolved. To narrow it to your specific question, search the Research Gap Finder: the search is free with a free account and lists the papers closest to your topic first. Unlocking that topic (50 credits, charged once) fills the comparison table from our 7.9M-paper local library and writes the gaps from its rows.

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Open questions raised by papers listed on this page include: (1) Dietary fibers are known to modulate intestinal physiology; however, the cellular mechanisms linking dietary fiber intake to epithelial immune responses remain incompletely understood (“Dietary pectin enhances intestinal antimicrobial protein expression via a tuft…”, 2026); (2) Whether ILC2-mediated inflammation observed in T2DM is also present in SPIDDM remains unclear (“Differences in group 2 innate lymphoid cells in type 2 or slowly progressive…”, 2026); (3) Type 2 cytokine release promotes wound healing and helminth clearance, but it remains unclear whether group 2 innate lymphocytes (ILC2s) and T-helper 2 cells (T H 2) cells have functionally distinct roles during anamnestic immunity (“Trained ILC2 prevent IL-17-associated lung injury during helminth infection…”, 2026); (4) It remains unclear whether this reflects true ILC plasticity or simply phenotypic changes (“Eomes fate-labeling reveals a subset of Eomeslo NK cells that exhibits an…”, 2026); (5) Metabolically unhealthy obesity is characterized by chronic inflammation and metabolic dysfunction; however, how intestinal immune organization shapes systemic metabolic outcomes remains unclear (“A microbiota-driven CCL25–CCR9 axis reprograms intestinal ILC2s in the distal…”, 2026). 298 gap statements have been mined from IL-33, ST2, and ILC Pathways papers in our 7.9M-paper local library, which holds 996 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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