Engineering Bacteriophages as Versatile Biologics.

Viruses of bacteria (bacteriophages or phages) are highly evolved nanomachines that recognize bacterial cell walls, deliver genetic information, and kill or transform their targets with unparalleled specificity. For a long time, the use of genetically modified phages was limited to phage display approaches and fundamental research. This is mostly because phage engineering has been a complex and time-consuming task, applicable for only a few well characterized model phages. Recent advances in sequencing technology and molecular biology gave rise to rapid and precise tools that enable modification of less-well-characterized phages. These methods will pave the way for the development of modular designer-phages as versatile biologics that efficiently control multidrug-resistant bacteria and provide novel tools for pathogen detection, drug development, and beyond.