کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9002168 | 1118576 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High effectiveness of platinum(IV) complex with adamantylamine in overcoming resistance to cisplatin and suppressing proliferation of ovarian cancer cells in vitro
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کلمات کلیدی
DAPIcis-DDPPARPPAGEHRP3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide - 3- (4،5-dimethylthiazol-2-yl) -2،5-difenyltetrazolium bromidecis-diamminedichloroplatinum(II) - cis-diamminedichloroplatinum (II)MTT - MTTPt(II) - Pt (II)Pt(IV) - Pt (IV)polyacrylamide gel electrophoresis - الکتروفورز ژل پلی آکریل آمیدApoptosis - خزان یاختهایDABCO - داکوOvarian cancer - سرطان تخمدانCytotoxicity - سمیت سلولیcisplatin - سیس پلاتینHorseradish peroxidase - پراکسیداز هوررادیشPropidium iodide - پروتئین یدیدpoly(ADP-ribose)polymerase - پلی (ADP-ribose) پلیمراز
موضوعات مرتبط
علوم پزشکی و سلامت
داروسازی، سم شناسی و علوم دارویی
داروشناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
[(OC-6-43)-bis(acetato)(1-adamantylamine)amminedichloroplatinum(IV)], coded as LA-12, is an octahedral platinum(IV) complex containing a bulky hydrophobic ligand - adamantylamine. The use of bulky hydrophobic amines as non-leaving ligands, may increase uptake of the compound by the cancer cells. Therefore, the effects of LA-12 on sensitive (A2780) and cisplatin resistant (A2780cis) ovarian cancer cell lines were investigated and compared to those of cisplatin. IC50 and IC90 concentrations of LA-12 were 6- (A2780) or 18-fold (A2780cis) lower than those for cisplatin (MTT assay). Equitoxic concentrations (IC50 or IC90) of both compounds caused a significant and similar time- and dose-dependent inhibition of cell proliferation and an increase in the number of floating cells which corresponded to the decrease of total cell viability. A different type and dynamics of cell cycle perturbation after cisplatin and LA-12 treatment were detected. Exposure to LA-12 resulted in transient accumulation of A2780 and A2780cis cells in S phase, while cisplatin caused G2/M arrest in sensitive and S phase arrest in resistant cells. A relatively low rate of apoptosis after exposure to IC50 or IC90 of both complexes was observed, markedly higher in resistant A2780cis cells. Western blot analysis indicated a concentration-dependent p53 level increase in both lines (higher after cisplatin treatment). PARP cleavage was observed only in A2780cis cells. In conclusion, LA-12 was found to be significantly more efficient than cisplatin, and it was able to overcome the acquired cisplatin resistance (showing resistance factor 2.84-fold lower than those for cisplatin). In spite of the low rate of apoptosis, LA-12 caused increase of p53 level and cell cycle perturbations in the ovarian cancer cell lines studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical Pharmacology - Volume 69, Issue 3, 1 February 2005, Pages 373-383
Journal: Biochemical Pharmacology - Volume 69, Issue 3, 1 February 2005, Pages 373-383
نویسندگان
Alois KozubÃk, Viktor Horváth, Lenka Å vihálková-Å indlerová, Karel SouÄek, JiÅina Hofmanová, Petr Sova, AleÅ¡ Kroutil, FrantiÅ¡ek Žák, Adolf Mistr, Jaroslav Turánek,