title: The apoptotic effect of cordycepin on human OEC-M1 oral cancer cell line.
abstract: Cordycepin (3'-deoxyadenosine), a pure compound of Cordyceps sinensis, has been illustrated with anti-tumor effects. In the present study, the apoptotic effect of cordycepin on OEC-M1, a human oral squamous cancer cell line, was investigated by morphological observations, cell viability assay, annexin V-FITC analysis and flow cytometry methods. Results demonstrated that the number of rounded-up cell increased as treatment duration of cordycepin (100 microM) increased from 3 to 48 h, and the plasma membrane blebbing could be observed after 12 h treatment. In cell viability assay, cell surviving rate significantly decreased as the dosage and duration of cordycepin treatment increased (P < 0.05). Moreover, phosphatidylserine flipping on cell membrane could be detected with 3, 6 and 12 h cordycepin treatment, which indicated an early apoptotic phenomenon. Furthermore, cell cycle studies illustrated that the percentage of G1 phase cell declined as the dosages of cordycepin increased (10 microM to 5 mM), while the percentages of G2M and subG1 phase cell increased (P < 0.05) in 12, 24 and 48 h cordycepin treatment. These results further confirmed the apoptotic event. In conclusion, cordycepin significantly induced cell apoptotsis in OEC-M1 human oral squamous cancer cells.
authors.affiliation: Department of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan, ROC.
authors.forename: Wei-Ciao
authors.initials: WC
authors.lastname: Wu
authors.forename: Jenn-Ren
authors.initials: JR
authors.lastname: Hsiao
authors.forename: Yu-Yan
authors.initials: YY
authors.lastname: Lian
authors.forename: Chun-Yu
authors.initials: CY
authors.lastname: Lin
authors.forename: Bu-Miin
authors.initials: BM
authors.lastname: Huang
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D045744:Cell Line, Tumor; D002462:Cell Membrane / Q000187:drug effects / Q000378:metabolism; D048430:Cell Shape / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D003839:Deoxyadenosines / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004791:Enzyme Inhibitors / Q000494:pharmacology; D005434:Flow Cytometry / Q000379:methods; D016193:G1 Phase / Q000187:drug effects; D016195:G2 Phase / Q000187:drug effects; D005887:Gingival Neoplasms / Q000378:metabolism / Q000473:pathology; D006801:Humans; D010718:Phosphatidylserines / Q000378:metabolism; D021381:Protein Transport / Q000187:drug effects; D013997:Time Factors
chemical_list: D000970:Antineoplastic Agents; D003839:Deoxyadenosines; D004791:Enzyme Inhibitors; D010718:Phosphatidylserines; C058120:cordycepin