Immune Modulation based Probiotic Mechanism of Action (MOA) Study Service in Animal Models

The intricate relationship between the gut microbiota and the host immune system is a rapidly evolving field, with probiotics emerging as powerful tools to modulate immune responses and promote overall health. Understanding the precise Mechanism of Action (MOA) by which your probiotic candidates exert their immunomodulatory effects is crucial for successful product development, regulatory approval, and market differentiation. At Creative Biolabs, we specialize in comprehensive preclinical research services, offering cutting-edge animal model studies to elucidate the immune modulation MOA of your probiotic strains. Our expertise and state-of-the-art facilities enable us to provide detailed insights, empowering you to unlock the full therapeutic potential of your probiotic innovations. Request a quote

Fig.1 Animal models for probiotic mechanism of action (MOA) study. (Creative Biolabs Authorized)

Overview: Decoding Probiotic Immune Modulation

Probiotics interact with the host immune system through various complex pathways. These interactions can lead to a wide range of immunomodulatory effects, including:

  • Enhancement of Gut Barrier Integrity
  • Modulation of Innate Immune Responses
  • Shifting Adaptive Immune Responses
  • Regulation of Cytokine Production
  • Production of Bioactive Metabolites
  • Competitive Exclusion of Pathogens

Understanding these mechanisms is vital for precisely targeting specific health conditions and substantiating health claims.

Accelerated Probiotic MOA: Immune Modulation Studies Services in Animal Models

Workflow

Fig.2 The workflow of the Immune Modulation for the probiotic MOA study in animal models. (Creative Biolabs original)

Service Details

Animal Models
Administration
Analysis
Samples
Deliverables
Turnaround Time

Animal Models

  • Species: Rodents (mice, rats), rabbits, and other species based on target application (e.g., pigs for agricultural probiotics, dogs/cats for companion animal probiotics).
  • Disease Models:
    • Inflammatory Bowel Disease (IBD) Models: DSS-induced colitis, TNBS-induced colitis, IL-10 knockout mice (chronic colitis).
    • Allergy Models: OVA-induced allergic asthma, food allergy models.
    • Infection Models: Various bacterial or viral challenge models to assess pathogen clearance and immune response.
    • Autoimmune Models: EAE (Experimental Autoimmune Encephalomyelitis), collagen-induced arthritis (CIA).
    • Metabolic Syndrome Models: Diet-induced obesity with associated inflammation.
    • General Immunomodulation in Healthy Animals: Basal immune profiling.

Probiotic Administration & Dosing

  • Routes: Oral gavage, dietary supplementation, direct administration.
  • Formulation: Live cultures, lyophilized powder, encapsulated probiotics.
  • Dosing Regimen: Acute, sub-chronic, or chronic administration.

Immune Phenotyping & Functional Assays

  • Cellular Immunity
    • Flow Cytometry: Quantification and phenotyping of immune cell populations in various tissues (spleen, lymph nodes, Peyer's patches, lamina propria, blood), including T cells (CD3+, CD4+, CD8+, Th1, Th2, Th17, Treg), B cells, macrophages, dendritic cells, and NK cells.
    • Lymphocyte Proliferation Assays: Assessment of T and B cell responsiveness to stimulation.
    • Phagocytosis Assays: Evaluation of macrophage and neutrophil activity.
    • Cytotoxicity Assays: Measurement of NK cell and cytotoxic T lymphocyte (CTL) activity.
  • Humoral Immunity
    • ELISA: Quantification of immunoglobulins (IgA, IgG, IgM, IgE) in serum, mucosal washes (feces, intestinal lavage), and other biological fluids.
    • Antibody Titers: Assessment of specific antibody responses to vaccination or pathogen challenge.
  • Cytokine and Chemokine Profiling
    • Multiplex Assays: Simultaneous quantification of a broad panel of pro-inflammatory and anti-inflammatory (e.g., IL-10, TGF-β) cytokines and chemokines in serum, plasma, tissue homogenates, and cell culture supernatants.
    • qPCR: Gene expression analysis of cytokine and chemokine mRNA in relevant tissues.
  • Gut Barrier Integrity Assessment
    • FITC-Dextran Permeability Assay: Measurement of intestinal permeability.
    • Tight Junction Protein Expression: Western blot or immunohistochemistry for zonula occludens (ZO-1), occludin, and claudins.
    • Mucin Layer Analysis: Alcian Blue/PAS staining and gene expression of mucins.
  • Gut Microbiota Analysis
  • Histopathology
    • Tissue Staining (H&E, special stains): Evaluation of inflammatory cell infiltration, tissue damage, goblet cell numbers, and overall tissue architecture in intestinal segments, spleen, and lymph nodes.
    • Immunohistochemistry/Immunofluorescence: Localization and quantification of specific immune cells and markers within tissues.
  • Gene Expression Analysis
    • RNA-Seq or Microarray: Global gene expression profiling to identify molecular pathways modulated by probiotics.
    • qPCR: Targeted gene expression analysis of specific immune-related genes, Toll-like receptors (TLRs), and antimicrobial peptides.

Sample Information

  • To initiate a study, we typically require:
    • Probiotic Strain Information: Detailed strain designation, species, genus, and purity.
    • Production & Storage Conditions: Information on how the probiotic was cultured, harvested, and stored to ensure viability and consistency.
    • Viability/CFU Count: A recent Certificate of Analysis (CoA) confirming the viable cell count (CFU/g or CFU/mL) of the probiotic material.
    • Formulation: Information on the carrier or formulation matrix, if applicable.
    • Safety Data: Any existing safety data for the probiotic strain (e.g., GRAS status, previous animal studies).

Deliverables

Upon completion of your study, you will receive a comprehensive package including:

Deliverable Components Content Specifications
Detailed Study Report A professional, publication-ready report outlining the study design, methods, raw data, statistical analysis, and interpretation of results.
Raw Data Files All raw data generated from instruments (e.g., flow cytometry FCS files, sequencing data, ELISA plate reads).
High-Quality Figures and Graphs Visually appealing representations of the data, suitable for presentations or publications.

Turnaround Time

Turnaround times are dependent on the complexity and scope of the study, ranging from 8 to 16 weeks for standard models and readouts. Customized or longer-term chronic studies may require extended timelines. We will provide a detailed timeline in your project proposal.

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Advantages of Partnering with Creative Biolabs

Expertise in Immunomodulation

Our team comprises experienced immunologists, microbiologists, and veterinarians with deep knowledge in probiotic research and animal model studies.

State-of-the-Art Facilities

Access to advanced animal housing, laboratories equipped with cutting-edge analytical platforms (flow cytometry, next-generation sequencing, GC-MS), and skilled personnel.

Customized Study Design

We work closely with you to design studies that precisely address your specific research questions and objectives, ensuring relevant and actionable data.

Comprehensive Readouts

A broad array of immunological, microbiological, and molecular assays to provide a holistic understanding of probiotic MOA.

Quality Data & Robust Analysis

Rigorous quality control measures and advanced statistical tools ensure reliable and reproducible results.

Accelerated Development

Outsourcing to our CRO allows you to leverage our resources and expertise, saving time and internal costs, and accelerating your product development pipeline.

Confidentiality & IP Protection

We maintain strict confidentiality protocols to protect your proprietary information.

Fig.3 Advanced omics platforms for probiotic MOA study. (Creative Biolabs Authorized)

Applications

  • New Probiotic Strain Development: Identifying and validating novel probiotic strains with specific immunomodulatory properties.
  • Product Formulation & Optimization: Understanding how different probiotic formulations impact immune responses.
  • Health Claim Substantiation: Generating robust scientific evidence to support specific health claims (e.g., "supports immune health," "reduces inflammation").
  • Mechanism Elucidation: Deepening the scientific understanding of how your probiotic works at a molecular and cellular level.
  • Biomarker Discovery: Identifying novel immune biomarkers that can be used for preclinical and clinical efficacy assessment.
  • Drug-Probiotic Interactions: Investigating the synergistic or antagonistic effects of probiotics when combined with pharmaceutical interventions.
  • Veterinary Probiotics: Development of probiotics for animal health and performance (e.g., livestock, aquaculture, companion animals).

Mechanism of Action: The Intricate Dance between Probiotics and Immunity

The immunomodulatory actions of probiotics are multifaceted and strain-specific. Our studies delve into the intricate "gut-immune axis," exploring how probiotics:

Direct Interaction with Immune Cells

Probiotics can directly interact with intestinal epithelial cells, dendritic cells (DCs), macrophages, and lymphocytes present in the gut-associated lymphoid tissue (GALT). This direct contact can trigger signaling pathways that influence immune cell maturation, activation, and cytokine secretion.

Modulation of Gut Microbiota Composition

Probiotics can alter the balance of the gut microbiome, promoting the growth of beneficial bacteria and suppressing pathogenic ones. A healthy gut microbiota, in turn, contributes to immune homeostasis.

Production of Immunomodulatory Metabolites

Probiotic fermentation leads to the production of various metabolites, notably SCFAs. SCFAs can act as signaling molecules, influencing immune cell function, gene expression, and even epigenetics. For example, butyrate is a crucial energy source for colonocytes and has potent anti-inflammatory properties.

Enhancement of Mucosal Barrier Function

Probiotics can strengthen tight junctions between epithelial cells, increase mucin production, and enhance the secretion of antimicrobial peptides, thereby reinforcing the gut's physical barrier against harmful substances and pathogens.

Induction of Regulatory T Cells (Tregs)

Certain probiotic strains can promote the differentiation and expansion of Tregs, which are critical for maintaining immune tolerance and preventing excessive inflammatory responses.


Ready to uncover the immune modulation MOA of your probiotic? Contact us today for a free consultation and a customized study proposal!

FAQs

What animal models do you offer for immune modulation studies?

We offer a wide range of rodent models (mice, rats) for various immune-mediated conditions, including inflammatory bowel disease, allergies, infections, and autoimmune diseases. We can also explore other species like rabbits, pigs, or specific livestock models based on your needs.

Can you perform studies with novel or difficult-to-culture probiotic strains?

Yes, our microbiology team has extensive experience working with a diverse range of bacterial strains, including anaerobic bacteria and those requiring specific growth conditions.

What specific immune parameters can you measure?

We can assess a broad spectrum of parameters, including immune cell populations (T, B, NK cells, macrophages, DCs), cytokine and chemokine profiles, immunoglobulin levels, gut barrier integrity markers, and gut microbiota composition and function (SCFAs).

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