کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5562654 | 1562703 | 2017 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The cytotoxic effects of VE-3N, a novel 1,4-dihydropyridine derivative, involve the mitochondrial bioenergetic disruption via uncoupling mechanisms
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
1,4-DHPPBSMDRDPHCCCP1,4-Dihydropyridine - 1،4-دی هیدروپیریدین1,6-diphenyl-1,3,5-hexatriene - 1،6-دیفنیل-1،3،5-هگزیدریلuncoupling - جدا کردنDihydropyridine - دی هیدروپیریدینCancer - سرطانHepG2 cells - سلولهای HepG2Cytotoxicity - سمیت سلولیPhosphate buffered saline - فسفات بافر شورMultidrug resistance - مقاومت چند داروییMitochondria - میتوکندریاPropidium iodide - پروتئین یدیدcarbonyl cyanide m-chlorophenyl hydrazone - کربونیل سیانید m-کلروفنیل هیدرازون
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Several 1,4-dihydropyridine derivatives overcome the multidrug resistance in tumors, but their intrinsic cytotoxic mechanisms remain unclear. Here we addressed if mitochondria are involved in the cytotoxicity of the novel 1,4-dihydropyridine derivative VE-3N [ethyl 6-chloro-5-formyl-2-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylate] towards cancer cells by employing hepatic carcinoma (HepG2) cells and isolated rat liver mitochondria. In HepG2 cells, VE-3N induced mitochondrial membrane potential dissipation, ATP depletion, annexin V/propidium iodide double labeling, and Hoechst staining; events indicating apoptosis induction. In isolated rat liver mitochondria, VE-3N promoted mitochondrial uncoupling by exerting protonophoric actions and by increasing membrane fluidity. Mitochondrial uncoupling was evidenced by an increase in resting respiration, dissipation of mitochondrial membrane potential, inhibition of Ca2Â + uptake, stimulation of Ca2Â + release, decrease in ATP synthesis, and swelling of valinomycin-treated organelles in hyposmotic potassium acetate media. Furthermore, uncoupling concentrations of VE-3N in the presence of Ca2Â + plus ruthenium red induced the mitochondrial permeability transition process. These results indicate that mitochondrial uncoupling is potentially involved in the VE-3N cytotoxic actions towards HepG2 cells. Considering that hepatocellular carcinoma is the most common form of liver cancer, our findings may open a new avenue for the development of VE-3N-based cancer therapies, and help to unravel the cytotoxic mechanisms of 1,4-dihydropyridines towards cancer cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Toxicology in Vitro - Volume 42, August 2017, Pages 21-30
Journal: Toxicology in Vitro - Volume 42, August 2017, Pages 21-30
نویسندگان
Javier MarÃn-Prida, Gilberto L. Pardo Andreu, Camila Pederiva Rossignoli, Michael González Durruthy, Estael Ochoa RodrÃguez, Yamila Verdecia Reyes, Roberto Fernández Acosta, Sergio A. Uyemura, Luciane C. Alberici,