Researchers at Hokkaido University in Japan have demonstrated that a molecule, called biglycan, plays an intrinsic role in attracting tumour cells toward the inner wall of tumour blood vessels.
Biglycan is a normal component of the supportive matrix outside cells and appears to modulate the biological activities of a number of growth factors. It is also released by immune cells in inflamed tissues.
The team conducted investigations by grafting low-metastatic (LM) and high-metastatic (HM) melanoma tumour cells under the skin of mice.