Accelerated evolution platform for engineering non-model industrial bacteria

Overview

This solution offers a proprietary recombineering-based accelerated evolution platform for engineering non-model bacteria used in industrial and agricultural biotechnology. By combining genome-scale targeted mutagenesis with parallel short-term evolution, the technology rapidly produces bacterial strains with enhanced fitness for fermentation and large-batch industrial growth. The platform addresses a critical bottleneck in industrial biotechnology: the slow, costly process of adapting non-standard bacterial hosts to commercial production environments.

The team has already demonstrated efficient recombineering in eight diverse bacterial hosts, including soil, food, and pathogenic species. In validation experiments, the platform produced bacteria with antibiotic resistance over 1,000 times the baseline concentration after only two rounds of editing and selection within a single week. Current efforts focus on soil bacteria identified in collaboration with Valent BioSciences, with the goal of producing strains optimized for real-world fermentation and industrial growth settings.

Technical specifications

Core capabilities:

• Genome-scale targeted mutagenesis using proprietary recombineering protein tools and expression systems
• Generation of combinatorial libraries containing billions of variant bacterial cells per experiment
• Parallel evolutionary trajectories using custom turbidostats that enable continual growth and feeding
• Recombination of adaptive mutations from multiple populations into a single enriched pool
• Multi-host compatibility demonstrated in E. coli, Mycobacterium smegmatis, Pseudomonas aeruginosa, Lactococcus lactis, Corynebacterium glutamicum, Caulobacter crescentus, Staphylococcus aureus, and Agrobacterium tumefaciens

Workflow:

• Establish efficient recombineering in target non-model bacterial hosts
• Run ten to twenty parallel evolutionary trajectories for approximately 1,000 generations
• Sequence populations to identify putative adaptive mutations
• Recombine identified mutations into a single combinatorial population
• Evolve the recombined population for an additional 500 generations and isolate adapted variants

Key features:

• Radically accelerated directed evolution compared to traditional serial adaptation methods
• Unparalleled efficiency in targeted mutagenesis relative to other genetic technologies
• Flexibility to engineer diverse bacterial hosts beyond standard laboratory models

Technology readiness level

The technology has been validated through proof-of-concept experiments demonstrating the ability to rapidly generate highly drug-resistant bacterial populations from hundreds of combined putative resistance alleles, achieving minimum inhibitory concentrations over 1,000 times baseline within one week of experimentation. Recombineering protocols have been successfully established in eight distinct bacterial species. The platform is now advancing toward applied validation in industrially relevant soil bacteria, with planned fermentation-scale evolution experiments and strain optimization in collaboration with industry partner Valent BioSciences. The technology is positioned for pilot-scale demonstration and collaborative development toward commercial bioprocessing applications.