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10.18632/oncotarget.13115 http://scihub22266oqcxt.onion/10.18632/oncotarget.13115 C5348367!5348367 !27821815     free     free     free Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27821815 .jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117       Oncotarget 2016 ; 7 (49 ): 80943-80956 Nephropedia Template TP {{tp|p=27821815 |t=2016. Everolimus (RAD001) sensitizes prostate cancer cells to docetaxel by down-regulation of HIF-1? and sphingosine kinase 1 |pdf=|usr=}}{{27821815 }} gab.com Text Everolimus (RAD001) sensitizes prostate cancer cells to docetaxel by down-regulation of HIF-1 and sphingosine kinase 1 JO: Oncotarget http://www.kidney.de/pget.php?&tw=1&pmid=27821815 #FOAvip Resistance to docetaxel is a key problem in current prostate cancer management. Sphingosine kinase 1 (SK1) and phosphoinositide 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathways have been implicated in prostate cancer chemoresistance. Here we investigated whether their combined targeting may re-sensitize prostate cancer cells to docetaxel.In hormone-insensitive PC-3 and DU145 prostate cancer cells the mTOR inhibitor everolimus (RAD001) alone did not lead to significant cell death, however, it strongly sensitized cells to low levels (5 nM) of docetaxel. We show that mTOR inhibition has led to a decrease in hypoxia-inducible factor-1? (HIF-1?) protein levels and SK1 mRNA. HIF-1? accumulation induced by CoCl2 has led to a partial chemoresistance to RAD001/docetaxel combination. SK1 overexpression has completely protected prostate cancer cells from RAD001/docetaxel effects. Using gene knockdown and CoCl2 treatment we showed that SK1 mRNA expression is downstream of HIF-1?. In a human xenograft model in nude mice single RAD001 and docetaxel therapies induced 23% and 15% reduction in prostate tumor volume, respectively, while their combination led to a 58% reduction. RAD001 alone or in combination with docetaxel has suppressed intratumoral mTOR and SK1 signaling, however as evidenced by tumor size, it required docetaxel for clinical efficacy. Combination therapy was well tolerated and had similar levels of toxicity to docetaxel alone.Overall, our data demonstrate a new mechanism of docetaxel sensitization in prostate cancer. This provides a mechanistic basis for further clinical application of RAD001/docetaxel combination in prostate cancer therapy. Twit Text FOAVip Everolimus (RAD001) sensitizes prostate cancer cells to docetaxel by down-regulation of HIF-1 and sphingosine kinase 1 ????Oncotarget http://www.kidney.de/pget.php?&tw=1&pmid=27821815 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=27821815 #FOAvip English Wikipedia <ref>{{Cite pmid|27821815 }}</ref> Everolimus (RAD001) sensitizes prostate cancer cells to docetaxel by down-regulation of HIF-1? and sphingosine kinase 1 #MMPMID27821815 Alshaker H ; Wang Q ; Kawano Y ; Arafat T ; Böhler T ; Winkler M ; Cooper C ; Pchejetski D Oncotarget 2016[Dec]; 7 (49 ): 80943-80956 PMID27821815 show ga Resistance to docetaxel is a key problem in current prostate cancer management. Sphingosine kinase 1 (SK1) and phosphoinositide 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathways have been implicated in prostate cancer chemoresistance. Here we investigated whether their combined targeting may re-sensitize prostate cancer cells to docetaxel.In hormone-insensitive PC-3 and DU145 prostate cancer cells the mTOR inhibitor everolimus (RAD001) alone did not lead to significant cell death, however, it strongly sensitized cells to low levels (5 nM) of docetaxel. We show that mTOR inhibition has led to a decrease in hypoxia-inducible factor-1? (HIF-1?) protein levels and SK1 mRNA. HIF-1? accumulation induced by CoCl2 has led to a partial chemoresistance to RAD001/docetaxel combination. SK1 overexpression has completely protected prostate cancer cells from RAD001/docetaxel effects. Using gene knockdown and CoCl2 treatment we showed that SK1 mRNA expression is downstream of HIF-1?. In a human xenograft model in nude mice single RAD001 and docetaxel therapies induced 23% and 15% reduction in prostate tumor volume, respectively, while their combination led to a 58% reduction. RAD001 alone or in combination with docetaxel has suppressed intratumoral mTOR and SK1 signaling, however as evidenced by tumor size, it required docetaxel for clinical efficacy. Combination therapy was well tolerated and had similar levels of toxicity to docetaxel alone.Overall, our data demonstrate a new mechanism of docetaxel sensitization in prostate cancer. This provides a mechanistic basis for further clinical application of RAD001/docetaxel combination in prostate cancer therapy. |Animals [MESH] |Antineoplastic Combined Chemotherapy Protocols/*pharmacology [MESH] |Cell Line, Tumor [MESH] |Cell Survival/drug effects [MESH] |Cobalt/pharmacology [MESH] |Docetaxel [MESH] |Dose-Response Relationship, Drug [MESH] |Down-Regulation [MESH] |Drug Resistance, Neoplasm/drug effects [MESH] |Drug Synergism [MESH] |Everolimus/*pharmacology [MESH] |Gene Expression Regulation, Enzymologic [MESH] |Gene Expression Regulation, Neoplastic [MESH] |Humans [MESH] |Hypoxia-Inducible Factor 1, alpha Subunit/genetics/*metabolism [MESH] |Male [MESH] |Mice, Inbred BALB C [MESH] |Mice, Nude [MESH] |Phosphotransferases (Alcohol Group Acceptor)/genetics/*metabolism [MESH] |Prostatic Neoplasms/*drug therapy/enzymology/genetics/pathology [MESH] |RNA Interference [MESH] |Signal Transduction/drug effects [MESH] |TOR Serine-Threonine Kinases/antagonists & inhibitors/metabolism [MESH] |Taxoids/*pharmacology [MESH] |Time Factors [MESH] |Transfection [MESH] |Tumor Burden/drug effects [MESH]Everolimus (RAD001) sensitizes prostate cancer cells to docetaxel by (epmc).pdf DeepDyve Pubget Overpricing