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Zapytanie: TARASIUK
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Tytuł oryginału: Anthrapyridones, a novel group of antitumour non-cross resistant anthraquinone analogues. Synthesis and molecular basis of the cytotoxic activity towards K562/DOX cells.
Autorzy: Tarasiuk J., Stefańska B., Plodzich I., Tkaczyk-Gobis K., Seksek O., Martelli S., Garnier-Suillerot A., Borowski E.
Źródło: Br. J. Pharmacol. 2002: 135 (6) s.1513-1523, il., tab., bibliogr. s. 1522-1523
Sygnatura GBL: 301,182

Hasła klasyfikacyjne GBL:
  • farmacja
  • onkologia

    Typ dokumentu:
  • praca opublikowana za granicą
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • in vitro

    Streszczenie angielskie: 1. Multidrug resistance (MDR) to antitumour agents, structurally dissimilar and having different intracellular targets, is the major problem in cancer therapy. MDR phenomenon is associated with the presence of membrane proteins which belong to the ATP-binding cassette family transporters responsible for the active drug efflux leading to the decreased intracellular accumulation. 2. The search of new compounds able to overcome MDR is of prime importance. 3. recently we have synthesized a new family of anthrapyridone compounds. The series contained derivatives modified with appropriate hydrophobic or hydrophylic substituents at the side chain. 4. The interaction of these derivatives with erythroleukina K562 sensitive and K562/DOX resistant (overexpressing P-glycoprotein) cell lines has been examined. The study was performed using a spectrofluorometric method which allows to continuously follow the uptake and efflux of fluorescent molecules by living cells. 5. It was demonstrated that the increase in the lipophilicity of anthrapyridones favoured the very fast cellular uptake exceeding the rate of P-gp dependent efflux out of the cell. For these derivatives, very high accumulation (the same for sensitive and resistant cells) was observed and the in vitro biological data confirmed that these compounds exhibited comparable cytotoxic activity towards sensitive and P-gp resistant cell line. In contrast, anthrapyridones modified with hydrophylic substituents exhibited relatively low kinetics of cellular uptake...

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