Process for preparing a protein which inhibits metastasis of cancer

摘要

Disclosed is a novel protein which has a molecular weight of 45,000+/-5,000 and pI 5.7+/-0.5 and exhibits cancer metastasis-inhibitory activity. The protein can be prepared by culturing human cells, animal cells and microorganisms capable of producing the protein in a nutrient culture medium while stimulating them with an inducer such as Bacille Calmette-Gu+E,acu e+EE rin and lipopolysaccharide.