In Silico Strain Safety (WGS): Virulence, AMR & Gene Transfer Risk Assessment

Intrinsic resistance is a natural, inherent trait of a specific bacterial species (e.g., cell wall structure making it resistant to certain large antibiotics). It is chromosomally encoded and typically not transferable. Acquired resistance occurs when a bacterium gains resistance genes through genetic mutation or Horizontal Gene Transfer (HGT). Regulatory agencies generally accept intrinsic resistance because it cannot spread to pathogens in the gut. However, acquired, transferable resistance is deemed a severe safety risk. Our WGS analysis maps the genetic neighborhood of resistance genes to explicitly determine if they reside on mobile elements, providing clear answers on transferability.

To ensure maximal coverage and minimize false negatives, we utilize a consensus approach drawing from multiple highly curated, internationally recognized databases. For Antimicrobial Resistance (AMR), we heavily reference established repositories like CARD and ResFinder. For virulence factors and pathogenic markers, we align genome assemblies against robust systems like VFDB. We continuously update our bioinformatics pipelines to reflect the latest versions of these databases.

No, detection alone is not an automatic disqualification. The critical factor is "mobility." If our in silico assessment shows that the AMR gene is deeply integrated into the core chromosome with no surrounding transposases, integrases, or insertion sequences, it may be classified as intrinsic or non-transferable, which is often acceptable under global safety guidelines. Our comprehensive report provides the exact contextual evidence—including identity matches and proximity to Mobile Genetic Elements (MGEs)—necessary for you to justify the strain's safety to regulatory bodies.

Yes. Regulatory bodies generally require both. The in silico WGS assessment explains the "why" and the "how" (genotypic potential and transferability), while phenotypic testing like Minimum Inhibitory Concentration (MIC) assays proves the "what" (actual physical expression of resistance). Performing the in silico analysis first is a strategic cost-saving measure; if a highly mobile multidrug-resistance plasmid is found computationally, you can eliminate the candidate before spending resources on extensive in vitro MIC panels and in vivo toxicity models.

We can accept raw sequencing reads in standard FASTQ format (from Illumina, PacBio, or Oxford Nanopore platforms) or pre-assembled contigs/genomes in FASTA format. Once data quality control is cleared, the standard turnaround time for a complete bioinformatics pipeline execution and generation of the final interpretive regulatory report is typically 2 to 3 weeks. Expedited services are available upon request.