Three recent studies published in the journals Nature and Science shed new light on why chemotherapy, a common conventional treatment for cancer, is typically a complete failure at permanently eradicating cancer. Based on numerous assessments of how cancer cells multiply and spread, researchers from numerous countries have confirmed that cancer tumors generate their own stem cells, which in turn feed the re-growth of new tumors after earlier ones have been eliminated.
In one of the studies published in the journal Nature, researcher Luis Parada from the University of Texas (UT) Southwestern Medical Center in Dallas and his colleagues decided to investigate how new tumors are able to re-grow after previous ones have been wiped out with chemotherapy. To do this, Parada and his team identified and genetically labeled cancer cells in brain tumors of mice before proceeding to treat the tumors with conventional chemotherapy. Continue reading