Microbial Culturomics of Human Gut Microbiota

Microbial culturomics harnesses high-throughput culture techniques, automation and integrative analytics to isolate and characterise the full breadth of bacterial diversity in the human gut. By systematically varying growth media, atmospheric conditions and incubation parameters, culturomics overcomes the limitations of traditional methods and complements metagenomic sequencing. This approach has uncovered hundreds of previously uncultured species, revealed strain-level variation, and provided essential reference genomes to support functional studies. The resulting isolate collections and genome catalogues underpin advances in probiotic development, antimicrobial discovery and mechanistic insights into host–microbe interactions, with far-reaching implications for global health and personalised medicine.

Research from Nature Portfolio

In 2023, researchers introduced an open-source robotic platform that automates colony isolation, integrates machine-learning-driven selection based on colony morphology and genome data, and generates extensive personalised gut biobanks encompassing tens of thousands of isolates. This system achieved representation of over 80 percent of abundant taxa and uncovered key cogrowth patterns among major bacterial families, shedding light on ecological interactions. Another study expanded the Cultivated Genome Reference (CGR2) to include more than 3 300 high-quality draft genomes from eight phyla, identifying nearly 180 novel species, extensive secondary metabolite gene clusters and precise phage–bacterium linkages. Together, these works provide unprecedented culture-based genomic resources and a framework for quantitative phenotypic and evolutionary analyses at strain resolution.

Microbial Culturomics of Human Gut Microbiota publication trend

The graph below shows the total number of articles in microbial culturomics of human gut microbiota across all publications each year (not limited to Nature Index journals).

Technical terms

Culturomics: A high-throughput approach combining diverse culture conditions and advanced analytics to isolate and characterise microbial species.

Isolate: A pure microbial strain obtained from a complex community through selective cultivation.

Metagenome-assembled genome (MAG): A draft genome reconstructed from environmental sequencing data without prior cultivation.

Pan-genome: The full complement of genes within a species, encompassing core and accessory genes across strains.

Biobank: A curated repository of microbial isolates and corresponding genomic data for research and therapeutic development.

References

1. High-throughput microbial culturomics using automation and machine learning. Nature Biotechnology (2023).
2. The genomic landscape of reference genomes of cultivated human gut bacteria. Nature Communications (2023).
3. Isolation of potentially novel species expands the genomic and functional diversity of Lachnospiraceae. iMeta (2024).
4. Advances in the isolation, cultivation, and identification of gut microbes. Military Medical Research (2024).