A Strategy for the Study of IL-9-Producing Lymphoid Cells in the Nippostrongylus brasiliensis Infection Model
March 3rd, 2023
IL-9-expressing T and ILC2 cells are induced during N. brasiliensis infection, yet their characterization has been largely overlooked in the infected intestine due to their low frequency and differential kinetics. This protocol describes the isolation of these cells from different target organs and confirmation of their identity via flow cytometry at different infection stages.
This protocol allows for the isolation and characterization of lymphoid cells expressing IL-9 in N.brasiliensis non-lymphoid infected tissues including the infected cut which recently was technically invisible.This protocol also provides an alternative to analyze populations of cells from peripheral tissues previously unappreciated in infection due to the intrinsic difficulties of isolating cells from these anatomical sites.This method allows the study of difficult-to-isolate populations from N.brasiliensis infected cut and could be applied to other helminthic infections, broadening our understanding of hookworm infections in humans.Demonstrating the procedure will be Ofelia Mu
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Overview
This protocol details the isolation of IL-9-expressing T and ILC2 cells from various target organs during N. brasiliensis infection. It emphasizes the importance of characterizing these cells, which have been largely overlooked due to their low frequency and differential kinetics.
Key Study Components
Area of Science
- Immunology
- Infectious Diseases
- Cell Biology
Background
- IL-9-expressing T and ILC2 cells play a role in immune responses.
- These cells are induced during N. brasiliensis infection.
- Characterization of these cells is crucial for understanding their function.
- Low frequency and differential kinetics complicate their study.
Purpose of Study
- To isolate IL-9-expressing T and ILC2 cells from infected tissues.
- To confirm the identity of these cells using flow cytometry.
- To investigate the dynamics of these cells at different stages of infection.
Methods Used
- Isolation of cells from various target organs.
- Flow cytometry for cell identification.
- Analysis of cell frequency and kinetics during infection.
- Comparison of cell populations at different infection stages.
Main Results
- Successful isolation of IL-9-expressing T and ILC2 cells.
- Characterization of these cells confirmed via flow cytometry.
- Observations of differential kinetics during infection stages.
- Insights into the role of these cells in immune response.
Conclusions
- IL-9-expressing T and ILC2 cells are significant in N. brasiliensis infection.
- Characterization of these cells can enhance understanding of immune mechanisms.
- Further research is needed to explore their functional roles.
Frequently Asked Questions
Executive Industry Relevance
Precise characterization of IL-9-producing lymphoid cells in the Nippostrongylus brasiliensis infection model addresses a critical gap in immune pathway deconvolution for helminthic disease research. This protocol enables standardized, reproducible quantification of rare immune cell populations across multiple tissues, supporting predictive confidence in early discovery and mechanistic de-risking. The approach enhances portfolio decision-making by clarifying immune cell kinetics and tissue-specific responses relevant to infectious and inflammatory disease pipelines.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Enables interrogation of IL-9-driven immune pathways in disease-relevant tissues.
- Supports functional target validation by quantifying rare lymphoid cell subsets.
- Facilitates mechanistic de-risking through kinetic profiling of immune responses.
- Improves predictive confidence for immune modulation strategies.
Screening & Assay Development
- Standardizes isolation and detection of IL-9-expressing cells for downstream assays.
- Enhances assay reproducibility by detailing cell yield and tissue-specific protocols.
- Prepares validated biological systems for compound screening targeting immune pathways.
- Enables quantitative readouts for comparative evaluation of immunomodulators.
Translational & Preclinical Research
- Aligns immune cell profiling with disease-relevant models for translational continuity.
- Supports biomarker discovery by mapping IL-9 cell kinetics across infection stages.
- Informs risk-adjusted advancement of immunotherapeutic candidates.
- Provides mechanistic insights for preclinical model selection and validation.
Pipeline & Workflow Integration
This protocol integrates into the discovery-to-preclinical continuum by enabling robust immune cell profiling in infection models, supporting both target validation and translational research.
- Discovery Biology: Facilitates hypothesis testing on IL-9 pathway involvement in host defense.
- Screening: Delivers reproducible, quantitative outputs for immune cell-based assays.
- Analytics: Provides flow cytometry-based measurements for cross-condition comparisons.
- Translational Research: Bridges discovery findings to preclinical validation in disease-relevant systems.
- Enterprise Reuse: Establishes a reusable protocol for immune cell analysis across helminthic and related infection models.
Operational & Enterprise Impact
- Scientific Value: Increases predictive confidence and reduces mechanistic ambiguity in immune pathway studies.
- Operational Value: Promotes standardization, reproducibility, and scalability of immune cell assays.
- Strategic Value: Enables informed go/no-go decisions and capital-efficient resource allocation.
- Portfolio Impact: Supports risk-adjusted prioritization of immunomodulatory targets and candidates.
Implementation Considerations
- Requires expertise in flow cytometry and immune cell isolation from complex tissues.
- Demands access to specialized instrumentation for cell sorting and analysis.
- Necessitates cross-team standardization for protocol adoption and data comparability.
- May require adaptation for different tissue types or infection models.
- Cell yield and detection sensitivity may vary by organ and infection stage.
Biopharma FAQs
Chapters in this video
0:05
Introduction
1:03
Isolation of Mediastinal Lymph Nodes, Lungs, Mesenteric Lymph Node Chains, and Small Intestine
2:37
Preparation of Single-Cell Suspensions from the Small Intestine, Lung, and Lymph Nodes
6:20
Results: Flow Cytometry Analysis and Gating Strategy for the Identification of Th9 Cells and IL-9+ ILC2 Cells
7:48
Conclusion
