Biomaterial Database

[Apoptosis resistance and its reversal in harringtonine resistant cell line]. 1994

M Fang, and H Q Zhang, and S B Xue, and D B Pang, and X S Chi

Department of Biology, Beijing Normal University.

Harringtonine (HT), a domestic antitumor drug extracted from Cephalotaxus hainanensis Li showed high chemotherapeutic efficacy on human acute granulocytic leukemia and acute myelocytic leukemia in clinics. Apoptosis of HL-60 cells can be induced by HT effectively; but for cells resistant to harringtonine, apoptosis can not be induced, even if the drug (HT) concentration is over 100 times of IC50 value. Although apoptosis occurred when its multidrugs resistance had been reversed by verapamil, compared with sensitive HL-60 cells, the time at which apoptosis happened delayed and the drug dosage increased. All these suggest that apoptotic resistance might be one of the marks of drug resistance in tumor cells, and apoptosis related factors could play a role in the formation of multidrug resistance.

UI	MeSH Term	Description	Entries
D006248	Harringtonines	Tetracyclic spiro-BENZAZEPINES isolated from the seeds of CEPHALOTAXUS. They are esters of the alkaloid cephalotaxine and may be effective as antineoplastic agents.	Cephalotaxine Alkaloids,Cephalotaxus Alkaloids,Alkaloids, Cephalotaxine,Alkaloids, Cephalotaxus
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014407	Tumor Cells, Cultured	Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely.	Cultured Tumor Cells,Neoplastic Cells, Cultured,Cultured Neoplastic Cells,Cell, Cultured Neoplastic,Cell, Cultured Tumor,Cells, Cultured Neoplastic,Cells, Cultured Tumor,Cultured Neoplastic Cell,Cultured Tumor Cell,Neoplastic Cell, Cultured,Tumor Cell, Cultured
D014700	Verapamil	A calcium channel blocker that is a class IV anti-arrhythmia agent.	Iproveratril,Calan,Cordilox,Dexverapamil,Falicard,Finoptin,Isoptin,Isoptine,Izoptin,Lekoptin,Verapamil Hydrochloride,Hydrochloride, Verapamil
D015473	Leukemia, Promyelocytic, Acute	An acute myeloid leukemia in which abnormal PROMYELOCYTES predominate. It is frequently associated with DISSEMINATED INTRAVASCULAR COAGULATION.	Leukemia, Myeloid, Acute, M3,Leukemia, Progranulocytic,Myeloid Leukemia, Acute, M3,Progranulocytic Leukemia,Promyelocytic Leukemia, Acute,AML M3,Acute Promyelocytic Leukemia,Leukemia, Acute Promyelocytic,M3 ANLL,ANLL, M3,Acute Promyelocytic Leukemias
D017209	Apoptosis	A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth.	Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis
D018432	Drug Resistance, Multiple	Simultaneous resistance to several structurally and functionally distinct drugs.	Drug Resistance, Extensively,Extensively Drug Resistance,Extensively-Drug Resistance,Multidrug Resistance,Multi-Drug Resistance,Extensively Drug Resistances,Extensively-Drug Resistances,Multiple Drug Resistance,Resistance, Extensively Drug,Resistance, Extensively-Drug,Resistance, Multiple Drug