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2 protocols using poly l lys solution 70 150 kda

1

Neurosteroid and Allosteric Modulator Testing

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Salts, solvents, and HEPES were purchased from Sigma-Aldrich. R(+)-Etomidate was purchased from Toronto Research Chemicals Inc (North York, Ontario, Canada). GABA, propofol, phenobarbital, DMEM high glucose, fetal bovine serum, and 0.01% poly-L-Lys solution (70-150 kDa) were purchased from Sigma-Aldrich (St. Louis, MO, USA). The steroid pregnanolone (3α5βP) was purchased from BioTechne Corp. (Minneapolis, MN, USA). Lipofectamine 2000, Opti-MEM, and trypsin-EDTA were obtained from Thermo Fischer Scientific (Waltham, MA, USA). NS-1738 and PNU-120596 were obtained from Cayman Chemical (Ann Arbor, MI, USA) and Adooq Bioscience (Irvine, CA, USA). PAM-2 was synthesized as described previously (Arias et al., 2011 (link)). The structures of NS-1738, PAM-2, and PNU-120596 are provided in Fig. 1. Key protein targets and ligands in this article are hyperlinked to corresponding entries in http://www.guidetopharmacology.org, and are permanently archived in the Concise Guide to PHARMACOLOGY 2021/22 (Alexander et al., 2021 (link)).
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2

Synthesis and Characterization of Gabazine-Oregon Green

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Drugs R(+)-Etomidate (etomidate) was purchased from Toronto Research Chemicals Inc. (North York, Ontario, Canada) . The salts used in buffers, HEPES, GABA, propofol, DMEM high glucose, fetal bovine serum, and 0.01% poly-L-Lys solution (70-150 kDa) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Pregnenolone sulfate was purchased from Bio-Techne Corp. (Minneapolis, MN, USA) and Sigma-Aldrich. Phenobarbital was obtained from J.T. Baker Chemical Co (Phillipsburg, NJ, USA). Lipofectamine 2000, Opti-MEM, and trypsin-EDTA were obtained from Thermo Fischer Scientific (Waltham, MA, USA). (E)-3-(furan-2-yl)acrylic acid, (E)-3-(2thienyl)acrylic acid, 1-hydroxybenzotriazole hydrate (HOBt), p-toluidine, tetrahydroquinoline, tetrahydroisoquinoline and 1-aminoindoline hydrochloride were obtained from Sigma-Aldrich SRL (Milan, Italy) .
N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDC), triethylamine, sodium hydride and iodomethane were purchased from Fluorochem (Glossop, UK).
Gabazine-oregon green (Gzn-OG) was synthesized as described previously (Sakamoto et al., 2019) .
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