The exploration of next-generation probiotics (NGPs) and Live Biotherapeutic Products (LBPs) heavily relies on definitive genomic characterization to substantiate safety, functional viability, and industrial processibility. A recent study titled "Hybrid genome assembly and comprehensive genomic analysis of Lactiplantibacillus pentosus LP309 reveal its probiotic and technological potential" underscores the necessity of combining multi-platform sequencing technologies to resolve complex bacterial genomes. For researchers and pharmaceutical developers aiming to characterize novel microbial candidates, Creative Biolabs provides an integrated pipeline extending from advanced hybrid sequencing and bioinformatics to comprehensive in vitro and in vivo functional validation. By establishing a robust workflow that bridges raw genomic data with actionable therapeutic insights, we assist our global partners in mitigating development risks and accelerating candidate strains toward preclinical phases. Contact our experts today to discuss your strain characterization needs.
Overview: Genomic and Functional Characterization of Lactiplantibacillus pentosus LP3091
The study focuses on Lactiplantibacillus pentosus LP309, a strain isolated from traditional fermented food, aiming to define its genetic basis for probiotic and industrial performance.
Experimental Methodology
The researchers employed a hybrid sequencing strategy combining short-read (Illumina) and long-read (Oxford Nanopore or PacBio) technologies to achieve a complete, closed circular chromosome. This approach facilitates the accurate assembly of repetitive regions and mobile genetic elements (MGEs). Following assembly, the genome was annotated using standardized pipelines (e.g., Prokka, eggNOG) to categorize protein-coding sequences (CDS) into functional clusters.
Key Data and Genomic Features
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Genome Statistics: The LP309 genome consists of a single circular chromosome (approx. 3.4--3.7 Mbp) with a GC content typical of the species.
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Probiotic Genetic Markers: The analysis identified genes encoding bile salt hydrolases (BSH), acid-tolerance proteins (e.g., F1F0-ATPase), and cell-surface proteins facilitating adhesion (e.g., mucus-binding proteins).
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Metabolic Potential: Genes involved in the biosynthesis of B-vitamins (riboflavin, folate) and the metabolism of diverse carbohydrates were documented, suggesting high technological adaptability.
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Safety Profile: The genomic screening confirmed the absence of known transmissible antibiotic resistance genes (ARGs) and virulence factors, aligning with EFSA and FDA safety requirements.
The study concludes that L. pentosus LP309 possesses a robust genetic repertoire supporting its survival in the human gut and its utility in functional food fermentation. The hybrid assembly provided a high-fidelity reference genome essential for further transcriptomic or proteomic studies.
Translating Genomic Pathways into R&D Solutions: Creative Biolabs' Core CRO Services
Resolving complex bacterial genomes containing multiple plasmids and repetitive regions requires robust sequencing strategies. Creative Biolabs provides complete genome sequencing services utilizing identical pipelines described in the literature:
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Short-Read Platform: Delivers deep coverage and high consensus accuracy to eliminate indels and single-nucleotide errors.
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Long-Read Platforms: Generates ultra-long reads to span complex structural arrangements, operons, and mobile genetic elements, ensuring the delivery of fully closed, circularized chromosomes and plasmids.
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De Novo Hybrid Assembly: Custom bioinformatics pipelines that combine short and long reads to achieve maximum sequence continuity.
Comprehensive Bioinformatics and Functional Profiling
Following successful assembly, understanding the metabolic and therapeutic capability of a strain is essential. Our bioinformatics platform provides:
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Taxonomic Resolution: ANI and multi-locus sequence typing (MLST) to guarantee precise taxonomic assignment.
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Metabolic Pathway Mapping: Identification of carbohydrate-active enzymes (CAZymes), short-chain fatty acid (SCFA) synthesis pathways, and vitamin biosynthesis clusters.
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Bacteriocin & Secondary Metabolite Screening: Custom annotation of anti-microbial gene clusters via specialized databases.
Regulatory approval for LBPs or functional food ingredients demands empirical and genomic safety verification. We offer:
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Antibiotic Susceptibility Testing (AST): Standardized minimum inhibitory concentration (MIC) assays aligned with EFSA guidelines to differentiate intrinsic resistance from acquired, transferable resistance.
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Virulence and Toxin Screening: High-throughput in silico profiling against the Virulence Factor Database (VFDB) to confirm the absence of enterotoxins, hemolysins, and virulence traits.
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Mobilome Characterization: Detection and mapping of insertion sequences, transposons, integrons, and prophages to evaluate the risk of horizontal gene transfer.
To validate the genomic predictions concerning adhesion and stress tolerance, Creative Biolabs hosts an array of functional assays:
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Gastrointestinal Stress Simulations: Evaluating survival kinetics under simulated gastric fluids (low pH) and intestinal fluids (bile salt exposure).
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Adhesion and Barrier Assays: Utilizing Caco-2 and HT-29 cell lines to measure mucosal adherence capacity and protection of epithelial tight junctions.
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Antimicrobial Assays: Co-culture inhibition assays targeting enteric pathogens (e.g., Salmonella enterica, Escherichia coli, Listeria monocytogenes).
Scientific Products Supporting Probiotic Research
To expedite internal laboratory workflows and ensure standard validation, Creative Biolabs supplies characterized, research-grade biological materials and specialized reagents tailored for comparative microbiome studies.
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Characterized Probiotic Strains: A comprehensive catalog of reference strains, including Lactobacillus spp., Bifidobacterium spp., and next-generation candidates like Akkermansia muciniphila and Faecalibacterium prausnitzii, available for use as positive controls in functional and technological comparative assays.
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High-Purity Genomic DNAs: Extracted genomic DNA from a broad array of standard and industrial microbes, prepared to meet the strict quality thresholds required for direct use in calibration, PCR tracking, and secondary sequencing controls.
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Probiotic DNA Standards: Validated, quantified DNA matrices designed for absolute quantification workflows via qPCR or digital PCR (dPCR) during strain enumeration and stability monitoring.
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Microbiome Biospecimens and QC Strains: Authenticated quality control strains and complex biological matrices to validate internal multi-omic and sequencing pipelines.
Why Partner with Creative Biolabs?
Navigating the transition from raw microbial isolation to a fully characterized Live Biotherapeutic Product requires an experienced, technically mature partner. Creative Biolabs offers clear institutional advantages to streamline this process:
Integrated Multi-Omics Infrastructure
By unifying long-read and short-read sequencing platforms with downstream metabolomic (SCFA analysis) and proteomic capabilities, we eliminate data fragmentation, providing clients with a continuous data lineage from genome to phenotype.
Scientific and Technical Depth
Our team consists of PhD-level microbiologists and computational biologists specialized exclusively in the study of anaerobic bacteria, next-generation probiotics, and the human/animal microbiome.
Tailored Experimental Design
We do not apply standardized, rigid protocols. Every project is engineered based on the unique physiological properties of the target organism (e.g., strict anaerobiosis, specific nutrient dependencies) and its intended therapeutic application.
Strict Regulatory Compliance
All validation assays and safety profiling frameworks are designed to produce datasets that align with global regulatory bodies, facilitating seamless inclusion in investigational dossiers.
Application Fields of L. pentosus and Related Research
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Pharmaceuticals (LBPs): Development of live biotherapeutics for IBD, metabolic disorders, and pathogen decolonization.
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Nutraceuticals & Functional Foods: Creation of fortified dairy products, fermented beverages, and dietary supplements with verified probiotic claims.
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Animal Health: Formulation of probiotic feed additives to reduce antibiotic reliance in livestock and aquaculture.
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Bio-preservation: Utilizing antimicrobial metabolites (e.g., organic acids, bacteriocins) for natural food preservation.
Resolving the full genomic architecture of candidates like Lactiplantibacillus pentosus LP309 is the foundational requirement for verifying safety and unlocking technological potential in the competitive biotherapeutic and probiotic industries. As demonstrated, moving from raw sequencing data to robust functional validation requires sophisticated multi-platform technology and specialized analytical expertise. Creative Biolabs functions as a dedicated research partner, providing the end-to-end CRO infrastructure and authenticated product portfolios necessary to transform raw microbial discoveries into thoroughly characterized, commercially viable products.
To transition your strain discovery programs from speculative genomic predictions into validated biological assets, submit an inquiry to the Creative Biolabs technical team today.
Frequently Asked Questions (FAQs)
Why is hybrid assembly preferred over short-read sequencing for LBP candidates?
Short-read sequencing often fails to resolve repetitive regions, which frequently harbor important genes like BSH or adhesion factors. Hybrid assembly ensures a closed genome, providing a complete map of both the chromosome and plasmids.
How does genomic analysis help in regulatory approval?
Agencies like the FDA and EFSA require proof that a strain does not possess transferable antibiotic resistance or virulence factors. Genomic screening provides definitive, sequence-based evidence of safety.
Can Creative Biolabs perform functional assays if the genome predicts a specific trait?
Yes. We offer a "Genotype-to-Phenotype" validation service, where we experimentally test the predictions made by genomic data (e.g., testing for B-vitamin production if synthesis pathways are identified).
Can your platform optimize culture media for newly sequenced strains exhibiting unique metabolic profiles?
Yes. By leveraging the metabolic pathway reconstructions generated during our functional annotation phase, our process development teams can identify specific carbohydrate preferences, amino acid requirements, and vitamin auxotrophies to formulate customized fermentation media that maximize biomass and preserve viability.
Reference
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Marín-Gordillo A, López-García E, Romero-Gil V, Martín-Arranz V, Arroyo-López FN, Rodríguez-Gómez F. Hybrid genome assembly and comprehensive genomic analysis of Lactiplantibacillus pentosus LP309 reveal its probiotic and technological potential. BMC Genomics. 2026 Feb 24;27(1):325. doi: 10.1186/s12864-026-12678-y. PMID: 41735829; PMCID: PMC13037094. Distributed under Open Access license CC BY 4.0, without modification.
