کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10905494 | 1086756 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
PKC 412 sensitizes U1810 non-small cell lung cancer cells to DNA damage
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کلمات کلیدی
STSPKCPARPphorbol 12-myristate 13-acetateAmCDEVDDTTTMREFMKPBSFIGEAsp-Glu-Val-Asp3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate - 3 - [(3-کلامیدوپروپیل) دی متیل آمونیو] -1-پروپان سولفونات7-amino-4-methylcoumarin - 7-آمینو-4-متیل کومارینERK1/2 - ERK1 / 2PMA - LDC هاAIF - آیفونstaurosporine - استوسوسورپینSCLC - بگذارندApoptosis - خزان یاختهایdithiothreitol - دیتیوتریتولLung cancer - سرطان ریهNSCLC - سرطان ریوی غیر سلول کوچکChemotherapy - شیمیدرمانیapoptosis-inducing factor - عامل القاء آپوپتوزPhosphate buffered saline - فسفات بافر شورFluoromethyl ketone - فلوریمتیل کتونRadiation - پرتوProtein kinase C - پروتئین کیناز سیpoly(ADP-ribose)polymerase - پلی (ADP-ribose) پلیمرازCHAPS - چاپسVAD - چهnon-small cell lung carcinoma - کارسینوم ریه سلول غیر سلولیSmall cell lung carcinoma - کارسینوم ریه کوچک سلولیextracellular signal-regulated kinase 1/2 - کیناز 1/2 تنظیم سیگنال خارج سلولی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
تحقیقات سرطان
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Non-small cell lung carcinoma (NSCLC) is characterized by resistance to drug-induced apoptosis, which might explain the survival of lung cancer cells following treatment. Recently we have shown that the broad-range kinase inhibitor staurosporine (STS) reactivates the apoptotic machinery in U1810 NSCLC cells [Joseph et al., Oncogene 21 (2002) 65]. Lately, several STS analogs that are more specific in kinase inhibition have been suggested for tumor treatment. In this study the apoptosis-inducing ability of the STS analogs PKC 412 and Ro 31-8220 used alone or in combination with DNA-damaging agents in U1810 cells was investigated. In these cells Ro 31-8220 neither induced apoptosis when used alone, nor sensitized cells to etoposide treatment. PKC 412 as a single agent induced death of a small number of U1810 cells, whereas it efficiently triggered a dose- and time-dependent apoptosis in U1285 small cell lung carcinoma cells. In both cell types PKC 412 triggered release of mitochondrial proteins followed by caspase activation. However, concomitant activation of a caspase-independent pathway was essential to kill NSCLC cells. Importantly, PKC 412 was able to sensitize etoposide- and radiation-induced death of U1810 cells. The best sensitization was achieved when PKC 412 was administered 24 h after treatments. In U1810 cells, Ro 31-8220 decreased PMA-induced ERK phosphorylation as efficiently as PKC 412, indicating that the failure of Ro 31-8220 to induce apoptosis was not due to weaker inhibition of conventional and novel PKC isoforms. However, Ro 31-8220 increased the basal level of ERK and Akt phosphorylation in both cell lines, whereas Akt phosphorylation was suppressed in the U1810 cells, which might influence apoptosis. These results suggest that PKC 412 could be a useful tool in increasing the efficiency of therapy of NSCLC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Cell Research - Volume 305, Issue 1, 15 April 2005, Pages 200-213
Journal: Experimental Cell Research - Volume 305, Issue 1, 15 April 2005, Pages 200-213
نویسندگان
Therese H. Hemström, Bertrand Joseph, Gunnar Schulte, Rolf Lewensohn, Boris Zhivotovsky,