title: The cytotoxicity of protoneodioscin (NSC-698789), a furostanol saponin from the rhizomes of Dioscorea collettii var. hypoglauca, against human cancer cells in vitro.
abstract: Protoneodioscin (NSC-698789) is a furostanol saponin isolated from the rhizomes of Dioscorea collettii var. hypoglauca (Dioscoreaceae), a Chinese herbal remedy for cancer treatment. Our studies showed that protoneodioscin is cytotoxic against most cell lines from leukemia and solid tumors in the NCI's (National Cancer Institute, USA) anticancer drug screen. Leukemia, CNS cancer, and prostate cancer are the most sensitive subpanels to protoneodioscin, while melanoma, ovarian cancer, and renal cancer are less sensitive. The preliminary animal studies showed that the maximum tolerant dose of protoneodioscin was 600 mg/kg to mice. Based on an analysis of the COMPARE software with protoneodioscin as a seed compound, no compounds in the NCI's database have similar cytotoxicity patterns to those of protoneodioscin, indicating a potentially novel mechanism of anticancer action involved.
authors.affiliation: Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, State University of New York at Buffalo, 14260, USA. kehu@acsu.buffalo.edu
authors.forename: Ke
authors.initials: K
authors.lastname: Hu
authors.forename: Xinsheng
authors.initials: X
authors.lastname: Yao
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology*; D001943:Breast Neoplasms / Q000188:drug therapy / Q000473:pathology; D016543:Central Nervous System Neoplasms / Q000188:drug therapy / Q000473:pathology; D003110:Colonic Neoplasms / Q000188:drug therapy / Q000473:pathology; D027742:Dioscorea; D004365:Drugs, Chinese Herbal; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000188:drug therapy / Q000473:pathology; D007938:Leukemia / Q000188:drug therapy; D008175:Lung Neoplasms / Q000188:drug therapy / Q000473:pathology; D008297:Male; D008545:Melanoma / Q000188:drug therapy; D015394:Molecular Structure; D010051:Ovarian Neoplasms / Q000188:drug therapy / Q000473:pathology; D011471:Prostatic Neoplasms / Q000188:drug therapy / Q000473:pathology; D027343:Rhizome / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000494:pharmacology*; D013261:Sterols / Q000737:chemistry / Q000494:pharmacology*; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004365:Drugs, Chinese Herbal; D012503:Saponins; D013261:Sterols; C472111:protoneodioscin