Department of Biomedical Engineering at Worcester Polytechnic Institute in Massachusetts.
Tumour cells typically invade healthy tissue by secreting enzymes that allow the invasion to take place, Jain said. That activity requires a significant amount of energy from the cancer cells.
"Our idea was to give the tumour cells a path of least resistance, one that resembles the natural structures in the brain, but is attractive because it does not require the cancer cells to expend any more energy," she said.
Details of the technique were reported in the journal Nature Materials.