metaProbiotics: a tool for mining probiotic from metagenomic binning data based on a language model

Area of Science:

• Microbiome Research
• Computational Biology
• Probiotic Discovery

Background:

• Beneficial bacteria and their roles in health remain underexplored due to a lack of systematic detection methods.
• Current understanding of probiotic community traits is fragmented, leading to inconsistent conclusions across studies.

Purpose of the Study:

• To develop a novel language model-based tool, metaProbiotics, for rapid and accurate detection of probiotic bacteria from metagenomic data.
• To investigate the probioticity and functional mechanisms of bacterial bins derived from metagenomes, including those from probiotic-treated individuals.
• To explore the relationship between probiotic gene module composition and host health status across different disease cohorts.

Main Methods:

• Development of metaProbiotics, a language model-based approach for identifying probiotic bins in metagenomic datasets.
• Validation of metaProbiotics using simulated benchmark datasets and real-world gut metagenomes from individuals receiving probiotic interventions.
• Analysis of identified probiotic bins to uncover potential probiotic mechanisms and genetic markers (e.g., bai operon).

Main Results:

• metaProbiotics demonstrated superior performance in detecting probiotic bins compared to existing methods.
• The tool identified known probiotic strains and novel probiotic-associated bins, including plasmid-like structures, revealing diverse probiotic mechanisms.
• Probiotic-associated bins were more prevalent in healthy individuals, but their abundance profiles showed cross-disease prediction challenges.
• Analysis of a comprehensive probiotic genome set revealed that diseased individuals often lack specific probiotic gene modules, with disease-specific variations.
• Different gene modules within the same probiotic exhibited heterogeneous effects across various diseases.

Conclusions:

• The functional integrity of the entire probiotic community, rather than the abundance of specific genes, is critical for maintaining gut homeostasis.
• Indiscriminate probiotic supplementation may not confer health benefits; targeted approaches considering gene function are necessary.
• The metaProbiotics tool facilitates novel probiotic discovery and systematic research into bacterial probiotic effects using large-scale metagenomic data.