Quadruplet codon decoding-based versatile genetic biocontainment system

Abstract

Abstract Biological resources, such as sequence information, genetic traits, materials and strains, pose risks when inadvertently released or deliberately misused. To address these concerns, we developed Quadruplet COdon DEcoding (QCODE), a versatile genetic biocontainment strategy that introduces a quadruplet codon (Q-codon) causing frameshifts, hindering proper gene expression. Strategically incorporating Q-codons in multiple genes prevents genetic trait escape, unallowed proliferation of microbial strains and unauthorized leakages of genetic materials. This multifaceted strategy, integrating Q-codons for genetic traits, materials and strains, ensures robust biocontainment across various levels. Notably, our system maintains sequence protection, safeguarding genetic sequence information against unauthorized access. The QCODE approach offers a versatile, efficient and compact solution to enhance biosecurity in diverse biological research settings.