University of Michigan researchers have found that a particular protein -- TRIP13 -- encourages those cancer cells to repair themselves. And they have identified an existing chemical that blocks this mechanism for cell repair. And they have identified an existing chemical that blocks this mechanism for cell repair. "This is a very significant advance, because identifying the function of the protein that fuels the repair of cancer cells and having an existing chemical that blocks the process, could speed the process of moving to clinical trials," said principal investigator Nisha D'Silva, U-M professor of dentistry and associate professor of pathology.