The structural and functional breakdown of the intestinal epithelial barrier, coupled with gut microbiota dysbiosis, represents a major pathophysiological hallmark of inflammatory bowel disease (IBD), including ulcerative colitis. Traditional fermented dairy products serve as an extensive natural reservoir for novel probiotic candidates capable of restoring gastrointestinal homeostasis. This technical resource presents a detailed, objective overview of a recent study published in the Journal of Dairy Science, titled "Genomic and functional characterization of probiotic strains from traditional fermented dairy products in alleviating dextran sulfate sodium–induced colitis."1 By deciphering the precise genomic blueprints and downstream anti-inflammatory mechanisms of specific Lacticaseibacillus and Lactobacillus strains, this study maps out a clear translational framework for live biotherapeutic product (LBP) development. To assist researchers in accelerating similar next-generation probiotic (NGP) pipelines, Creative Biolabs provides a fully integrated suite of preclinical CRO services, spanning high-throughput strain isolation, whole-genome sequencing, in vitro functional profiling, and germ-free animal models, bridging the gap between raw microbial discovery and robust clinical translation. Contact our expert team today for a tailored LBP development consultation.
Overview: Genomic and Functional Landscapes of Probiotics in IBD Mitigation1
The published study systematically characterized three previously uncharacterized probiotic strains isolated from traditional fermented dairy products: Lacticaseibacillus rhamnosus L. r1, Lacticaseibacillus rhamnosus L. r2, and Lactobacillus plantarum L.p (now classified as Lactiplantibacillus plantarum). The research design combined comparative genomics with an in vivo functional validation model to uncover their therapeutic potential against dextran sulfate sodium (DSS)-induced murine colitis.
Experimental Methodology
-
Strain Isolation & Identification: Novel bacterial strains were isolated from traditional fermented dairy matrices and classified using genotypic and phenotypic profiling.
-
Genomic Characterization: Whole-genome sequencing (WGS) was deployed to analyze the genetic architecture, mapping functional pathways, carbohydrate-active enzymes (CAZymes), and verifying the complete absence of virulent factors or transmissible antibiotic resistance genes (ARGs).
-
In Vivo Colitis Model: C57BL/6 mice were subjected to DSS administration to induce acute colitis. The experimental groups received oral gavage of L. rhamnosus L. r1, L. rhamnosus L. r2, or L. plantarum L.p, respectively, while control and disease groups were maintained concurrently.
-
Multi-Omics Assessment: Fecal microbiome dynamics were evaluated via high-throughput 16S rRNA gene sequencing. Intestinal barrier integrity and localized inflammatory cytokine profiles were measured via qPCR and histopathological staining.
The authors concluded that L. rhamnosus L. r1, L. r2, and L. plantarum L.p alleviate acute DSS-induced colonic inflammation through a multi-pronged mechanism involving the restoration of gut microbiota homeostasis, reinforcement of the mucosal tight junction barrier, and balancing of local immune responses. These findings support their potential viability as functional ingredients or next-generation live biotherapeutics.
From Laboratory Workflows to Scalable R&D: CRO Services
LBP Discovery and Isolation Services
-
Microbial Isolation & Screening: Specialized protocols for isolating anaerobic and facultative strains from diverse matrices (food, environmental, or human samples).
-
Taxonomic Identification: High-resolution identification using both phenotypic methods and molecular sequencing.
Comprehensive Genomic & Bioinformatics Analysis
-
Whole Genome Sequencing (WGS): Utilizing Illumina and PacBio platforms for complete de novo assembly.
-
Comparative Genomics: Identifying unique therapeutic markers and metabolic pathways.
-
Safety Profiling: Computational screening for Antibiotic Resistance Genes (ARGs) and Virulence Factors (VFs) to meet regulatory requirements.
-
DSS-Induced Colitis Models: Highly reproducible models in various mouse and rat strains.
-
Pharmacodynamics (PD) Evaluation: Detailed monitoring of DAI, histopathology, and intestinal permeability.
Mechanism of Action (MoA) Elucidation
-
Cytokine & Chemokine Profiling: Multiplex assays for systemic and local immune responses.
-
Microbiome Analysis (16S/Metagenomics): Assessing the impact of the LBP on the endogenous microbial ecosystem.
-
Metabolomics: Quantifying SCFAs, bile acids, and other microbial metabolites.
In the study, consistent oral gavage is essential for reliable results. We provide Lab-scale production of microbial freeze-dried powder services specifically for animal research.
-
Custom Formulation: Optimized protective agents to ensure high viability post-lyophilization.
-
High Viability (CFU): Precise control over the freeze-drying cycle to maintain the biological activity required for gavage.
-
Standardization: Providing researchers with uniform, stable powder that eliminates the variability of daily fresh culture preparation.
Research Products for Probiotic & LBP Development
To ensure high reproducibility and save critical development time, researchers require fully characterized, quality-controlled materials that match the taxa identified in leading publications. Creative Biolabs supplies a comprehensive portfolio of ready-to-use products directly aligned with this field of study:
-
Validated Probiotic Strains: We supply premium, high-viability reference strains and next-generation candidates, including specialized Lactobacillus spp., Pediococcus spp., Bacteroides spp., and Akkermansia muciniphila, ideal for positive controls or baseline comparative evaluations in mucosal inflammation studies.
-
High-Purity Probiotic DNA Standards: Eliminate extraction biases with our ready-to-use genomic DNA standards (e.g., Lactobacillus DNA standard, Bacteroides DNA standard, and synchronized Microbial Community DNA Mixes) designed for immediate use as quantitative controls in qPCR and NGS assays.
-
Inactivated Probiotics (Inactivated Microorganisms): We offer chemically or thermally inactivated strains (e.g., Inactivated Akkermansia, Inactivated Bacteroides, Inactivated Lactobacillus) to investigate postbiotic effects, surface-bound structural components, and toll-like receptor (TLR) interaction mechanics without live-culture variables.
-
Microbiome Biospecimens: Access standard fecal and intestinal biospecimens, essential for establishing baseline humanized or disease-state configurations during in vitro gut simulations and model developments.
The Creative Biolabs' Advantages: Specialized Live Biotherapeutic Platforms
Navigating the stringent requirements of Live Biotherapeutic Product (LBP) development demands a contract research partner with specialized infrastructure. Creative Biolabs differentiates your research through several advanced technical capabilities:
Proprietary Germ-Free Mouse Models
We maintain an elite gnotobiotic and germ-free (GF) mouse platform, enabling precise fecal microbiota transplantation (FMT) and single-strain or cocktail colonization studies to establish unambiguous causal links between your candidate strain and host immune modulation.
State-of-the-Art In Vitro Gut Simulations
Our automated gut simulation systems accurately mimic human gastric, small intestinal, and colonic physiological parameters (pH, transit times, anaerobic gradients), providing dynamic survival and metabolic data before entering animal testing.
AI-Powered LBP Discovery & Development
By incorporating advanced artificial intelligence and machine learning algorithms, we accelerate target selection through predictive modeling of strain-host receptor interactions and automated mining of genomic databases for anti-inflammatory gene clusters.
Comprehensive Stability & Quality Control Frameworks
Our platform includes specialized modules for stress response profiling (acid, bile, osmotic pressures), probiotic enumeration techniques, and strict biological safety tests to confirm long-term viability and purity early in your development pipeline.
Broad Therapeutic Application Areas
The combination of genomic characterization and functional animal modeling established in this research serves as a standardized R&D blueprint across multiple medical and commercial fields:
-
Inflammatory Bowel Disease (IBD) Therapeutics: Direct optimization of pharmaceutical-grade LBPs targeting Ulcerative Colitis and Crohn's disease via mucosal barrier repair and localized cytokine rebalancing.
-
Functional Foods & Nutraceuticals Development: Scientific validation of traditional dairy or plant-derived strains to satisfy regulatory demands for verified health claims in commercial probiotic formulations.
-
Metabolic Health & Obesity Management: Utilizing similar multi-omics pathways to evaluate how cross-feeding taxa (such as Akkermansia) affect systemic energy homeostasis, insulin sensitivity, and metabolic endotoxemia.
-
Immune-Oncology Co-Therapies: Investigating how specific gut microbes modulate systemic immune baselines to enhance the efficacy of checkpoint inhibitors or attenuate chemotherapy-induced mucositis.
The journey from identifying a promising probiotic strain in a dairy sample to proving its efficacy in a colitis model is a complex, multi-stage process. As demonstrated in the literature, success depends on the precision of genomic analysis and the consistency of the microbial intervention. Creative Biolabs provides the essential infrastructure to bridge these stages, most notably through our custom freeze-dried powder production and standardized colitis models. By leveraging our specialized CRO services, you can ensure that your probiotic research is built on a foundation of technical excellence and scientific rigor.
Contact our expert team today to discuss your strain characterization goals or to request a detailed technical quote for your next project.
Frequently Asked Questions (FAQs)
Why use freeze-dried powder for animal gavage instead of fresh liquid cultures?
Freeze-dried powder offers superior stability and dosage control. It allows for the preparation of a single batch of material that can be used throughout the duration of a study, reducing the inter-day variability inherent in fresh culture preparation.
Can you customize the concentration (CFU/g) of the freeze-dried microbial powder?
Yes. We can optimize the production process to achieve specific target concentrations required for your experimental design, ensuring that the gavage volume remains manageable for the animal model.
Does your genomic service include analysis for "Generally Recognized as Safe" (GRAS) status?
Our genomic safety profiling (screening for ARGs, VFs, and toxins) provides the foundational data required for GRAS notifications and other regulatory safety assessments.
How does Creative Biolabs guarantee that newly isolated strains do not possess hidden antibiotic resistance risks?
Every isolation workflow is integrated with our Antibiotic Susceptibility Testing platform and Whole-Genome Sequencing annotation. We align all genetic sequences against international databases (CARD, ResFinder) to distinguish between safe, intrinsic non-transmissible resistance and dangerous, plasmid-borne acquired resistance genes.
We have limited experience with anaerobic cultivation. Can Creative Biolabs handle highly oxygen-sensitive next-generation probiotics?
Absolutely. Our facility is equipped with state-of-the-art anaerobic workstations and specialized bioreactors. We support the complete development pipeline for both traditional microaerophilic strains and strict, obligate anaerobes like Faecalibacterium prausnitzii and Akkermansia muciniphila.
Reference
-
Wang, Yue et al. "Genomic and functional characterization of probiotic strains from traditional fermented dairy products in alleviating dextran sulfate sodium-induced colitis." Journal of dairy science 109,4 (2026): 3508-3524. doi:10.3168/jds.2025-27589. Distributed under Open Access license CC BY 4.0, without modification.
