Advances in the study of antitumor activities of the marine mollusks extracts

The extracts of marine mollusks（Abalone，Aplysia，Sepia，Arcagranosa linnaeus，Cyclina sinensis，Mytilus coruscus，Chlamys farrei，Meretrix meretrix，Ostrea，Sinonovacula constricta and Solen gradis）classified as polysaccharides，proteins and peptides，possess the antitumor，anti-aging，and anti-bacterial activities.Cancer patients undergoing long-term chemotherapy usually suffer from the damage to vital organs，and resistances affecting the outcomes of chemotherapy.Therefore，it is imperative to search for anti-cancer drugs with low toxicity and high efficiency.At present，several marine mollusks are being studied.Summary on the antitumor activities of the marine mollusks extrats is presented，which might provide a basis for the development of marine anti-cancer drugs.