[Restorative effect of quercetin on subcellular distribution of daunorubicin in multidrug resistant leukemia cell lines K562/ADM and HL-60/ADM]. 2004

Xun Cai, and Fang-Yuan Chen, and Jie-Ying Han, and Chun-Hong Gu, and Hua Zhong, and Ren-Rong Ouyang
Department of Oncology, Shanghai No. 6 People's Hospital, Shanghai Jiaotong University, Shanghai 200233, P.R. China. caixuncn@yahoo.com.cn

OBJECTIVE Quercetin, a widely distributed natural flavonoid with a variety of biological functions, can reverse multidrug resistance (MDR) in leukemia according to recent researches. This study was to investigate the mechanism of quercetin restoring subcellular distribution of daunorubicin (DNR) in multidrug resistant leukemia cell lines, K562/ADM and HL-60/ADM, and reversing their MDR. METHODS MTT cell viability assay was used to verify the sensitization of DNR by quercetin in K562/ADM and HL-60/ADM cells,and determine the reverse concentration extent,confocal laser scanning microscope was used to observe the subcellular distribution of DNR in K562/ADM and HL-60/ADM cells,and relevant sensitive cell lines, K562/S and HL-60/S,before and after quercetin exposion. RESULTS Compared with K562/S and HL-60/S cells,20-40 micromol/L of quercetin in vitro remarkably enhanced the sensitivity of K562/ADM and HL-60/ADM cells to DNR, restore the subcellular distribution of DNR, so as to reverse MDR. CONCLUSIONS quercetin could be a candidate of effective multidrug resistance-reversing agent in leukemia chemotherapy.

UI MeSH Term Description Entries
D011794 Quercetin A flavonol widely distributed in plants. It is an antioxidant, like many other phenolic heterocyclic compounds. Glycosylated forms include RUTIN and quercetrin. 3,3',4',5,7-Pentahydroxyflavone,Dikvertin
D002467 Cell Nucleus Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed) Cell Nuclei,Nuclei, Cell,Nucleus, Cell
D003593 Cytoplasm The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990) Protoplasm,Cytoplasms,Protoplasms
D003630 Daunorubicin A very toxic anthracycline aminoglycoside antineoplastic isolated from Streptomyces peucetius and others, used in treatment of LEUKEMIA and other NEOPLASMS. Daunomycin,Rubidomycin,Rubomycin,Cerubidine,Dauno-Rubidomycine,Daunoblastin,Daunoblastine,Daunorubicin Hydrochloride,NSC-82151,Dauno Rubidomycine,Hydrochloride, Daunorubicin,NSC 82151,NSC82151
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000903 Antibiotics, Antineoplastic Chemical substances, produced by microorganisms, inhibiting or preventing the proliferation of neoplasms. Antineoplastic Antibiotics,Cytotoxic Antibiotics,Antibiotics, Cytotoxic
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
D018922 HL-60 Cells A promyelocytic cell line derived from a patient with ACUTE PROMYELOCYTIC LEUKEMIA. HL-60 cells lack specific markers for LYMPHOID CELLS but express surface receptors for FC FRAGMENTS and COMPLEMENT SYSTEM PROTEINS. They also exhibit phagocytic activity and responsiveness to chemotactic stimuli. (From Hay et al., American Type Culture Collection, 7th ed, pp127-8) HL60 Cells,Cell, HL60,Cells, HL60,HL 60 Cells,HL-60 Cell,HL60 Cell
D019008 Drug Resistance, Neoplasm Resistance or diminished response of a neoplasm to an antineoplastic agent in humans, animals, or cell or tissue cultures. Antibiotic Resistance, Neoplasm,Antineoplastic Drug Resistance,Drug Resistance, Antineoplastic,Antineoplastic Agent Resistance,Neoplasm Drug Resistance,Resistance, Antineoplastic Agent,Resistance, Antineoplastic Drug
D020014 K562 Cells An ERYTHROLEUKEMIA cell line derived from a CHRONIC MYELOID LEUKEMIA patient in BLAST CRISIS. Cells, K562

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