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3 protocols using sorafenib tosylate

1

Quantification of Nitric Oxide Levels

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All reagents were from Sigma-Aldrich Chemical Co. (St Louis, Missouri, USA) unless otherwise stated. 4-Amino-5-methylamino-2′,7′-difluorofluorescein diacetate (DAF-FM) was obtained from Molecular Probes (Cat. D-23842). S-nitroso-l-cysteine (CSNO) was prepared according to the procedure described elsewhere [31] (link) by incubation of l-cysteine with acidified sodium nitrite and quantification by absorbance at 334 nm using a molar absorption coefficient of 0.74 mM−1 cm−1. Sorafenib Tosylate was purchased from Carbosynth (Carbosynth Ltd., Berkshire, United Kingdom).The study protocol has been approved by the Ethical Committee of the Institution.
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2

Sorafenib Tosylate Formulation Development

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Sorafenib tosylate was purchased from BIOSYNTH Carbosynth (Compton, Newbury, United Kingdom). Cremophor EL, tetraglycol, triethylamine, and polyvinylpyrrolidone (PVP K 30) (average molecular weight 40 kDa) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Triacetin, isopropyl myristate (IPM), soybean oil, corn oil, tween 80, span 80, span 20, mineral oil, and glycerin were acquired from Daejung Chemicals Co. (Siheung, South Korea). Peceol, labrafil M 1994 CS, labrafil M 2125, labrasol, transcutol P, lauroglycol 90, capryol 90, and labrafac lipophile WL 1349 were obtained from Gattefossé (Saint-Priest Cedex, France). Capmul MCM and captex 355 were gifted from Abitec Corporation (Columbus, OH, USA). Propylene glycol, tween 20, olive oil, and phosphoric acid were purchased from Duksan Pure Chemical (Ansan, South Korea). Polyethylene glycol (PEG) 400 was purchased from Samchun Pure Chemical (Gyeonggi-Do, South Korea). Colloidal silica (Aerosil® 200 Pharma) was purchased from Evonik industries AG (Essen, Germany). Ethanol (EtOH) and high-performance liquid chromatography (HPLC)-grade acetonitrile (ACN) were purchased from Honeywell Burdick & Jackson® (Muskegon, MI, USA). All other chemicals used were of the analytical grade.
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3

Sorafenib Tosylate Oxidative Stress Assay

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Sorafenib Tosylate was obtained from Carbosynth Limited (Berkshire, UK) (Supplementary Fig. 1). Xanthine oxidase (X2252), xanthine (X0626), 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) and cyclic hydroxylamine 1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethyl-pyrrolidine (CMH) were obtained from Sigma-Aldrich (Missouri, USA). Red Mitochondrial Superoxide Indicator (MitoSOX™) (M36008), dihydroethidium (DHE) (D-11347), 2,7-dichloro dihydro-fluorescein diacetat (H2DCFDA) (D-399) and 4,5-diaminofluorescein diacetate (DAF-2) (D-23842) were obtained from Life Technologies (Thermo Fisher Scientific, Massachusetts, USA). Sulforaphane (SFN, Sigma-Aldrich) and vascular endothelial growth factor (VEGF, PrepoTech, New Jersey, USA) were used as inducers of Nrf2 activation.
HepG2 (HB-8065™) was obtained from ATCC/LGC Standards (Barcelona, Spain). JHH2, JHH-4, JHH-5 and Huh-1 were obtained from the Japanese Collection of Research Bioresources Cell Bank (Tokyo, Japan). SNU886 was obtained from the Korean Cell Lines Bank (Seoul, Korea). MHCC97H was obtained from Woodland Pharmaceuticals (Massachusetts, USA).
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