Synthetic Genetic Circuits for Precision Payload Control in Engineered Bacteriophages: From Natural Chassis to Programmable Therapeutics

Abstract

Precision therapeutic alternatives to traditional antibiotics have become essential because to the global antimicrobial resistance (AMR) challenge. Through genetic engineering and synthetic biology, bacteriophage viruses which specifically infect bacteria have become programmable antimicrobial platforms. The development of phage engineering from the use of natural regulatory systems to the creation of complex synthetic genomic circuits is methodically examined in this overview. We talk about genetic logic gates for multi-input sensing, inducible systems for spatiotemporal regulation of therapeutic payloads, and the growing significance of computational design tools in speeding up phage engineering. We also examine the regulatory environment and clinical translation issues, such as the historic SNIPR001 phase 1 trial that showed CRISPR-Cas-armed phages are safe in humans. The combination of phage therapy with synthetic biology promises a paradigm shift toward programmable antimicrobial therapies, despite the fact that there are still considerable technological and regulatory obstacles to overcome.