How did Stanley N. Cohen and Herbert W. Boyer pioneer recombinant DNA technology?

Stanley N. Cohen and Herbert W. Boyer were instrumental in pioneering recombinant DNA technology in 1973. Building upon the discovery of type II restriction enzymes—which allow for the precise cutting of DNA at specific sites—they developed methods to manipulate genetic material.12

Their breakthrough involved cutting DNA into fragments, rejoining different fragments to create recombinant molecules, and inserting these new genes into E. coli bacteria. Once inside the host bacteria, these recombinant molecules were able to replicate, effectively producing many copies of the modified DNA. Cohen and Boyer subsequently developed techniques for generating recombinant plasmids, further advancing the field.12

This foundational work enabled the commercialization of genetic engineering, leading Boyer to co-found Genentech in 1976. Their contributions transformed biotechnology, facilitating the production of therapeutic proteins and other essential medical products.13