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5 protocols using cisplatin cis pt

1

Inhibition of FAK, Cisplatin, and CR Downregulation

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The FAK inhibitor Defactinib (VS-6063, PF-04554878) was obtained from Selleckchem (Houston, TX, USA). Cisplatin (Cis-Pt) and dimethyl sulfoxide (DMSO) were purchased from Sigma-Aldrich. The compound DVL PDZ-domain inhibitor II 3289-8625 was obtained from Merck, Schaffhausen, Switzerland (catalog number 322338). All compounds were dissolved in DMSO. Medium containing 0.5% DMSO was used as control for the experiments. A concentration of 1 mM IPTG (Isopropyl β-d-1-thiogalactopyranoside; PanReac AppliChem, Axonlab, Baden-Dättwil, Switzerland) was used for the induction of CR downregulation; the medium containing IPTG was replaced every three days.
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2

Cell Viability Assay Protocol

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The materials used included: RPMI 1640 liquid medium (Sigma-Aldrich Co, Ltd, USA), fetal bovine serum (FBS) (Sigma-Aldrich Co, Ltd, USA), penicillin/streptomycin and L-glutamine (Merck KGaA (Darmstadt, Germany)), propidium iodide (Sigma-Aldrich Co, Ltd, USA), RNase A (Sigma, USA), tetramethylrhodamine ethyl ester perchlorate (TMRE)(Sigma, USA), antibodies against β-actin (1:2000 dilution) (Sigma, USA), anti-phospho-p38 kinase antibodies (1:1000 dilution) (Cell Signaling, USA), DC Protein Assay kit (Bio-Rad, USA), cisplatin (cis-Pt, Sigma-Aldrich Co, Ltd, USA).
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3

MAPK15 Expression Vectors for Cisplatin Sensitivity

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The pCEFL HA, pCEFL HA MAPK15 [18 (link)], pCEFL HA MAPK15_AXXA and pCEFL HA MAPK15_KD [25 (link)] expression vectors have been previously described. The corresponding cDNA (MAPK15_WT, MAPK15_AXXA and MAPK15_KD), resistant to siRNA for MAPK15 (siMAPK15-1), were synthesized (GeneART, Thermo Fischer Scientific) with “synonymous” mutations in the sequence recognized by the siRNA and cloned in the pCEFL HA expression vector. The identity and integrity of all vectors was confirmed by DNA sequencing. Cis-platin (Cis-Pt; Sigma Aldrich, Milan, Italy) was used at a final concentration of 1 μM. Bafilomycin A1 (Santa Cruz Biotechnology, Heidelberg, Germany) and RO31-8220 (Merck Millipore, Vimodrone, Italy) were used at a final concentration of 100 nM.
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4

Synthesis and Characterization of Multifunctional Polymeric Nanocarriers

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Poly(lactide-co-glycolide), ester endcap L:G 50:50 (PLGA, Mw ~ 25,000–35,000), poly(ethylene glycol) methyl ether-block-poly(lactide-co-glycolide) (PEG-PLGA, Mw ~ 5000:20,000), poly(lactide-co-glycolide)-folate, L:G 50:50 (FA-PLGA, Mw ~ 25,000–35,000) employed as biocompatible, “stealth” and functionalized “smart” polymers, respectively, for NC stabilization were obtained from PolySciTech® (West Lafayette, IN, USA). Cremophor A25 and didodecyldimethylammonium bromide, di-C12DMAB, applied as a hydrophilic non-ionic and a hydrophobic double chain cationic surfactant, were obtained from BASF Care Creations (Monheim am Rhein, Germany) and Sigma Aldrich (Poznan, Poland), respectively. Verteporfin (VP) and cisplatin (Cis-Pt), utilized as hybrid cargo, were from Sigma-Aldrich (Poznan, Poland). Supplementary chemical compounds were of commercial grade and were used as received. Doubly distilled water was purified using a Milli-Q purification system (Millipore, Bedford, MA, USA).
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5

Targeted Cancer Drug Delivery System

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Branched PEI 10 kDa and mPEG 5 kDa were respectively supplied from Poly Sciences Inc. (Canada) and Jenkem (USA). Dithiodipropionic acid (DTDP), N-hydroxysuccinimide (NHS), sodium borohydride (NaBH4),1-(3-dimethylamino-propyl)-3-ethylcarbodiimide hydrochloride (EDC), 3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), ethidium bromide (EthBr), cisplatin (cis-Pt), and N-acetyl-(Asp-Glu-Val-Asp)-7-amino-4-trifluoromethylcoumarin (Ac-DEVD-AFC) were provided from Sigma-Aldrich (USA).
A2780S and A2780R cell lines and human umbilical vein endothelial cells (HUVECs) were provided from Pasture Institute (Iran, Tehran). As-21 and scrambled sequences were TCAACATCAGTCTGATAAGCTA and CATTAATGTCGGACAACTCAAT, respectively.
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