Scientists have discovered something we revealed more than a year ago: chemotherapy causes cancer to spread. The drug promotes cancer growth by attacking healthy cells surrounding the tumour.
The ‘environment’ in which the tumours live in the body can weaken the effectiveness of chemotherapy, and also encourages the spread of cancer by making neighbouring cells immune to treatment.
Researchers from the Fred Hutchinson Cancer Research Centre in Seattle made the discovery when they carried out laboratory tests on prostate cancer cells.
(Source: Nature Medicine, 2012; doi: 10.1038/nm.2890)