- Song K, Li G, Kim J, Jing K, Kim T, Kim J, et al. Protein-bound polysaccharide from Phellinus linteus inhibits tumor growth, invasion, and angiogenesis and alters Wnt/?-catenin in SW480 human colon cancer cells. BMC Cancer. 2011;11:307 pubmed publisher..These data suggest that PL suppresses tumor growth, invasion, and angiogenesis through the inhibition of Wnt/?-catenin signaling in certain colon cancer cells. ..