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Erschienen in: Cancer Chemotherapy and Pharmacology 4/2008

01.09.2008 | Original Article

Biological properties of 4-methyl-2,7-diamino-5,10-diphenyl-4,9-diazapyrenium hydrogensulfate (ADAP)

verfasst von: Saška Marczi, Ljubica Glavaš-Obrovac, Tatjana Belovari, Ranko Stojković, Siniša Ivanković, Vatroslav Šerić, Ivo Piantanida, Mladen Žinić

Erschienen in: Cancer Chemotherapy and Pharmacology | Ausgabe 4/2008

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Abstract

Objective

4-Methyl-2,7-diamino-5,10-diphenyl-4,9-diazapyrenium hydrogensulfate (ADAP) is a potential antitumor compound because of its DNA and RNA intercalating ability. In this study, cellular uptake, intracellular distribution as well as mechanism of action, antitumor activity in vitro and toxicity in vivo of ADAP were investigated.

Methods

Based on the fluorescence properties of ADAP, its entry and distribution into live cells were analyzed by fluorescence microscopy. The in vitro antiproliferative activity was determined using MTT test. For screening of topoisomerase II-targeted effects of ADAP, the cell-free assay and immunoband depletion assay were used. Expression of the genes c-mos, c-N-ras, c-Ki-ras, c-H-ras, p53 and caspase 3 in Caco-2 cells treated with ADAP was examined by RT-PCR. Toxicity in vivo was determined using C3HHf/Bu Zgr/Hr mice treated by single or multiple doses of ADAP at a concentration of 25 mg/kg.

Results

ADAP in μM concentrations entered into MIAPaCa-2 cell’s cytoplasm in 5 min and into nuclei in 60 min after administration. Intracellular distribution of ADAP depended on the period of treatment time. ADAP (0.1–100 μM) strongly inhibited the growth of both mouse (FsaR, SCCVII) and human tumor cells (HeLa, Caco-2, HT-29, MIAPaCa-2, HBL, HEp-2, SW620, MCF-7) compared to its weak cytotoxicity on controls and normal cells (WI38). Results of both topoisomerase II assays showed that ADAP is not a topoisomerase II poison. Expression of investigated genes was dependent on the incubation time, except for p53 and c-H-ras. Morphological changes in tissues and organs of mice were not observed. Results of patohistological analysis have been confirmed by hematological and clinical-chemical analysis of blood of treated and non-treated animals.

Conclusion

ADAP is a strongly bioactive compound with antitumor potential in vitro. The antitumor potential in vivo remains to be identified.
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Metadaten
Titel
Biological properties of 4-methyl-2,7-diamino-5,10-diphenyl-4,9-diazapyrenium hydrogensulfate (ADAP)
verfasst von
Saška Marczi
Ljubica Glavaš-Obrovac
Tatjana Belovari
Ranko Stojković
Siniša Ivanković
Vatroslav Šerić
Ivo Piantanida
Mladen Žinić
Publikationsdatum
01.09.2008
Verlag
Springer-Verlag
Erschienen in
Cancer Chemotherapy and Pharmacology / Ausgabe 4/2008
Print ISSN: 0344-5704
Elektronische ISSN: 1432-0843
DOI
https://doi.org/10.1007/s00280-007-0643-0

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