A Technique to Generate a Murine Model of Dextran Sulfate Sodium-Induced Colitis
JoVE Encyclopedia of Experiments
Immunology
0 views • 3:20 min • July 8th, 2025
Loading...
Overview
This article describes a method to induce colitis in a murine model using dextran sulfate sodium (DSS). The process involves monitoring the mouse for signs of gastrointestinal disorders and performing surgical isolation of the colon for further analysis.
Key Study Components
Area of Science
- Neuroscience
- Immunology
- Gastroenterology
Background
- Colitis is an inflammatory bowel disease characterized by inflammation of the colon.
- DSS is a polysaccharide that disrupts the epithelial barrier, leading to inflammation.
- The study utilizes a murine model to investigate the effects of DSS on colonic health.
- Understanding the mechanisms of colitis can help in developing therapeutic strategies.
Purpose of Study
- To induce colitis in mice for research purposes.
- To evaluate the impact of DSS on the colonic mucosal barrier.
- To assess the immune response triggered by DSS-induced colitis.
Methods Used
- Replacement of drinking water with a 3% DSS solution for seven days.
- Monitoring of mouse weight, DSS consumption, and stool production.
- Surgical isolation of the colon for histological analysis.
- Fixation of tissue samples for downstream assays.
Main Results
- DSS treatment resulted in significant weight loss and gastrointestinal disorders in mice.
- Histological analysis showed disruption of the epithelial layer and increased immune cell infiltration.
- Pro-inflammatory cytokines were secreted in response to microbial entry into the lamina propria.
- The study provides insights into the pathophysiology of colitis.
Conclusions
- The DSS-induced colitis model is effective for studying inflammatory bowel disease.
- Findings highlight the role of epithelial barrier disruption in colitis pathogenesis.
- This model can be used for testing potential therapeutic interventions.
Frequently Asked Questions
What is DSS?
DSS, or dextran sulfate sodium, is a polysaccharide used to induce colitis in experimental models.
How is colitis monitored in mice?
Colitis is monitored through weight loss, changes in stool production, and gastrointestinal symptoms.
What are the histological methods used?
Tissue samples are fixed in paraformaldehyde for histological examination of the colonic structure.
What immune responses are observed in DSS colitis?
DSS colitis triggers an immune response characterized by the infiltration of T cells and secretion of pro-inflammatory cytokines.
Why is this model important?
This model helps researchers understand the mechanisms of colitis and evaluate potential treatments.
Executive Industry Relevance
The dextran sulfate sodium (DSS)-induced murine colitis model provides a reproducible system for interrogating gut barrier disruption and immune-mediated inflammation relevant to inflammatory bowel disease (IBD) drug discovery. This model enables early-stage target validation and mechanistic de-risking by recapitulating key features of human colitis in a controlled preclinical setting. Its standardized workflow supports translational continuity from discovery biology through preclinical assessment of candidate interventions.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Enables functional validation of targets involved in epithelial barrier integrity and immune signaling.
- Supports mechanistic de-risking by modeling the interplay between barrier disruption and immune activation.
- Facilitates hypothesis-driven interrogation of pathways implicated in IBD pathogenesis.
Screening & Assay Development
- Provides a validated in vivo system for evaluating candidate compounds targeting colitis mechanisms.
- Standardizes endpoints such as weight loss, colon length, and histological scoring for quantitative assessment.
- Enables reproducible preparation of tissue samples for downstream molecular and cellular assays.
Translational & Preclinical Research
- Aligns with disease-relevant mechanisms observed in human IBD, supporting translational biomarker development.
- Offers continuity from discovery through preclinical validation of therapeutic hypotheses.
- Supports risk-adjusted advancement decisions based on quantitative and histological outputs.
Pipeline & Workflow Integration
This DSS-induced colitis model is positioned at the interface of early discovery and preclinical research, enabling hypothesis testing, target validation, and candidate evaluation within the IBD therapeutic pipeline.
- Discovery Biology: Supports hypothesis testing of barrier and immune targets by recapitulating epithelial disruption and immune infiltration.
- Screening: Provides quantitative outputs such as weight loss and colon length for standardized compound evaluation.
- Analytics: Enables histological and molecular readouts to compare intervention effects across experimental groups.
- Translational Research: Facilitates biomarker alignment and mechanistic continuity with human disease features.
- Enterprise Reuse: Serves as a reusable platform for iterative testing of diverse therapeutic modalities targeting colitis.
Operational & Enterprise Impact
- Scientific Value: Increases predictive confidence in target and pathway selection for IBD programs.
- Operational Value: Delivers standardized, reproducible, and scalable in vivo workflows for cross-team adoption.
- Strategic Value: Improves go/no-go decision-making and reduces late-stage biological risk in IBD portfolios.
- Portfolio Impact: Enables risk-adjusted prioritization and advancement of candidate therapeutics targeting gut inflammation.
Implementation Considerations
- Requires expertise in murine handling, surgical tissue isolation, and histological processing.
- Needs access to animal facilities, surgical instrumentation, and analytical infrastructure for tissue analysis.
- Demands cross-team standardization of endpoints and scoring criteria for reproducibility.
- Adaptation may be needed for different mouse strains or experimental variables.
- Limitations include model specificity to acute colitis and potential variability in DSS response.
Biopharma FAQs
Why does null hypothesis testing matter for DSS-induced colitis target validation?
Null hypothesis testing in the DSS model enables objective evaluation of whether candidate interventions or genetic modifications significantly alter colitis severity, supporting robust target validation and reducing false positives in early discovery.
How does independent variable isolation fit the DSS colitis discovery pipeline?
Isolating variables such as DSS concentration, treatment duration, or genetic background ensures that observed effects on colitis endpoints are attributable to the intervention, enhancing mechanistic clarity and reproducibility across studies.
What do quantitative dependent variable measurements enable in DSS colitis studies?
Quantitative measurements like weight loss, colon length, and histological scores provide standardized outputs for comparing intervention efficacy, supporting data-driven advancement decisions and cross-study benchmarking.
Why are replication requirements critical for cross-functional DSS colitis research?
Replication across independent experiments and teams ensures that findings are robust and generalizable, facilitating cross-functional collaboration and increasing confidence in preclinical candidate selection.
What statistical analysis capabilities are required before DSS colitis model implementation?
Teams must be equipped to perform statistical comparisons of quantitative endpoints, assess significance, and control for variability, ensuring that conclusions drawn from the DSS model are scientifically rigorous and actionable for portfolio decisions.
09:11
Systematic Scoring Analysis for Intestinal Inflammation in a Murine Dextran Sodium Sulfate-Induced Colitis Model
Related Videos
0 Views
07:34
Induction of Intestinal Inflammation by Adoptive Transfer of CBir1 TCR Transgenic CD4+ T Cells to Immunodeficient Mice
Related Videos
0 Views
05:08
A TNBS-Induced Rodent Model to Study the Pathogenic Role of Mechanical Stress in Crohn's Disease
Related Videos
0 Views
08:39
Murine Colitis Modeling using Dextran Sulfate Sodium (DSS)
Related Videos
0 Views
08:43
Investigating Intestinal Inflammation in DSS-induced Model of IBD
Related Videos
0 Views
12:37
Modeling Colitis-Associated Cancer with Azoxymethane (AOM) and Dextran Sulfate Sodium (DSS)
Related Videos
0 Views
03:50
Hematoxylin and Eosin Staining to Assess Colon Damage in DSS-Induced Colitis
Related Videos
0 Views
03:23
Assessment of Chemical-Induced Colitis via Immunohistochemical Analysis of Colon Tissue Sections
Related Videos
0 Views
09:04
DNBS/TNBS Colitis Models: Providing Insights Into Inflammatory Bowel Disease and Effects of Dietary Fat
Related Videos
0 Views
08:20
Murine Distal Colostomy, A Novel Model of Diversion Colitis in C57BL/6 Mice
Related Videos
0 Views
Last updated: 15 August 2026