Skip to main content
Open Access Publications from the University of California

A genetic network that suppresses genome rearrangements in Saccharomyces cerevisiae and contains defects in cancers.

  • Author(s): Putnam, Christopher D
  • Srivatsan, Anjana
  • Nene, Rahul V
  • Martinez, Sandra L
  • Clotfelter, Sarah P
  • Bell, Sara N
  • Somach, Steven B
  • de Souza, Jorge ES
  • Fonseca, André F
  • de Souza, Sandro J
  • Kolodner, Richard D
  • et al.

Gross chromosomal rearrangements (GCRs) play an important role in human diseases, including cancer. The identity of all Genome Instability Suppressing (GIS) genes is not currently known. Here multiple Saccharomyces cerevisiae GCR assays and query mutations were crossed into arrays of mutants to identify progeny with increased GCR rates. One hundred eighty two GIS genes were identified that suppressed GCR formation. Another 438 cooperatively acting GIS genes were identified that were not GIS genes, but suppressed the increased genome instability caused by individual query mutations. Analysis of TCGA data using the human genes predicted to act in GIS pathways revealed that a minimum of 93% of ovarian and 66% of colorectal cancer cases had defects affecting one or more predicted GIS gene. These defects included loss-of-function mutations, copy-number changes associated with reduced expression, and silencing. In contrast, acute myeloid leukaemia cases did not appear to have defects affecting the predicted GIS genes.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View