Beyond Darwin: understanding cancer persister cells

You are cordially invited to a special seminar of the Department of Cell & Developmental Biology Sackler Faculty of Medicine

 

 

By:

Yaara Oren, Ph.D.

Broad Institute and Harvard Medical School

USA

 

 

Title:

Beyond Darwin: understanding cancer persister cells

 

 

 

Abstract: Despite favorable initial response to therapy, a third of cancer patients will develop recurrent disease and succumb to it within five years of diagnosis. While there has been much progress in characterizing the pathways that contribute to stable genetic drug resistance, the mechanisms underlying early reversible resistance, also known as persisters-driven resistance, remain largely unknown. It has long been believed that persisters represent a subset of cells that happen to be non-proliferating at the time of treatment, and therefore can survive drugs that preferentially kill rapidly proliferating cells. However, in my talk I will describe a rare persister population which, despite not harboring any resistance-conferring mutation, can maintain proliferative capacity in the presence of drug. To study this rare, transiently-resistant, cycling persister population, we developed Watermelon, a high-complexity expressed barcode lentiviral library for simultaneous tracing of each cell’s clonal origin and proliferative and transcriptional states. We combine single cell transcriptomics with imaging and metabolomics to show that cycling and non-cycling persisters arise from different cell lineages with distinct transcriptional and metabolic programs. Finally, I will describe how by studying persister cells we can gain critical insights on cellular memory, fate, and evolution, which can guide the development of better anti-cancer treatments

 

 

The seminar will take place on Monday, December 27th, 2021 at 13:15 PM,

At Sackler Faculty of Medicine Building, Slezak Hall