by R. Passov
Recently, I watched a YouTube of a talk given by Jennifer Doudna. This past May, in front of some her UC Berkeley colleagues, Doudna shared, “a story … about some research … that led in an unexpected direction … ” producing “ … some science that has profound implications going forward…but also makes us really think about what it means to be human and what it means to have the power to manipulate the very code of life …”
It all started, Doudna explains, when she got a call from someone at Cal who said you don’t know me but you’re doing the type of research that’s connected to my work. Her colleague had noticed that “ …many types of bacteria in their chromosomes have a sequence of DNA that is a storage site for sequences that come from viruses that infect those cells.”
“These are the CRISPERS …” a record of the DNA from all prior infections, “… a genetic vaccination card for bacteria.”
Doudna is generous with praise, never missing an opportunity to share credit. One lucky lab member collected soil samples, then sequenced DNA from bugs in those samples looking for alternative CRISPER pathways. The result uncovered different flavors of the CRISPER-Cas immune system. Which got Doudna to thinking “… about the difference in the type of CRISPER systems in nature…” Read more »