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8 protocols using dopamine hydrochloride

1

Dopaminergic Receptor Binding Assay

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Compounds used in this study were purchased from Sigma-Aldrich (St. Louis, MO) unless indicated otherwise: HEPES, sodium pyruvate, penicillin, streptomycin, 2-mercaptoethanol, D-glucose, bovine serum albumin (Merck Millipore, Darmstadt, Germany), glacial acetic acid, heptanesulfonic acid, methanol, glutathione, NaOH, EDTA, dimethyl sulfoxide, L-DOPA, dopamine hydrochloride, S-(−)-raclopride (+)-tartrate salt, R-(−)-deprenyl hydrochloride, pargyline hydrochloride, ascorbic acid, (S)-(−)-sulpiride (Tocris, Bristol, United Kingdom), (−)-quinpriole Hydrochloride (Tocris), R-2230 (link) (gift of Dr. Amy Newman, synthesized at NIDA, NIH, Baltimore, MD), ML32131 (link) (synthesized at NINDS, NIH, Bethesda, MD) and [3H]L-DOPA (Dihydroxyphenylalanine, L-3,4-[ring 2,5,6-3H]) (American Radiolabeled Chemicals, St. Louis, MO).
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2

Dopaminergic Signaling Modulation Assay

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CNO (Tocris) was first diluted in DMSO (Sigma), then in Dulbecco’s Phosphate Buffered Saline (PBS, Gibco) to a 0.5% DMSO final concentration and injected intraperitoneally at 3 mg/kg 15 min before behavioral testing. Dopamine hydrochloride (Tocris, #3548), SKF81297 hydrobromide (Tocris, #1447) and (−)-Quinpirole hydrochloride (Tocris, #1061) were diluted in ACSF (see below) to respectively 10, 50 and 10 µM, extemporaneously for each day of recording, and kept protected from light for the duration of the bath perfusion.
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3

Immortalized Rat Retinal Endothelial Cell Response to Dopamine and Cytokines

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The immortalized rat retinal capillary endothelial cells SV40 (T9097) and the corresponding applied cell extracellular matrix (G422) and Prigrow IV medium (TM004) supplemented with 10% fetal bovine serum (FBS) were obtained from Applied Biological Materials (Richmond, BC, Canada). The cells were seeded into 24-well plates at 50,000 cells/well and pretreated with dopamine hydrochloride (25, 50, and 100 μM; Tocris Bioscience, Bristol, UK) for 2 h followed by a 24 h treatment with or without cytokine cocktail containing IL-6 (100 pg/μL; Thermo Fisher Scientific, Waltham, MA, USA), sIL-6R (100 pg/μL; Thermo Fisher Scientific, Waltham, MA, USA), and IL-17A (50 pg/μL; Thermo Fisher Scientific, Waltham, MA, USA). The cells were then processed for RNA isolation and qRT-PCR or cytoplasmic and nuclear protein extractions using Minute™ Cytoplasmic and Nuclear Extraction Kit for Cells (Invent Biotechnologies, Plymouth, MN, USA) for Western blotting.
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4

Neuroactive Compounds Acquisition Protocol

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Serotonin hydrochloride, Histamine dihydrochloride, Asenapine maleate were purchased from Tocris, Dopamine hydrochloride, Epinephrine hydrochloride, [Arg8]-Vasopressin acetate salt, Paliperidone, Somatostatin were obtained from Sigma-Aldrich, Aripiprazole was purchased from Toronto Research Chemical.
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5

Neurochemical Receptor Assay Protocols

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Ethanol was purchased from Pharmco-AAPER (Brookfield, CT). Dopamine hydrochloride, sulpiride, SCH23390, nomifensine, N-[3-([1,1-Biphenyl]-4-yloxy)-3-(4-fluorophenyl)propyl]-N-methylglycine (NFPS), nisoxetine hydrochloride bicuculline, chelerythrine and Gö6976 were purchased from Tocris Biosciences (Minneapolis, MN). The cDNA plasmid pZac2.1-GfaABC1D-hPMCA2w/b-mCherry was purchased from Addgene (plasmid #111568) and used to generate an AAV2/5 virus (Univ. of South Carolina Viral Core, Columbia, SC). The AAV5-GfaABC1D-tdTomato virus was purchased from Addgene. U73122 was purchased from Abcam (Cambridge, MA). Strychnine, VU0134992 hydrochloride, sulforhodamine 101 and all reagents used to prepare aCSF, sucrose-containing and internal pipette solution were purchased from Sigma (St. Louis, MO).
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6

Dopaminergic Receptor Ligand Assays

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Terguride (ab144611) was obtained from Abcam. Aripiprazole (SML-0935), PMA (P8139) and pergolide mesylate (P8828) were purchased from Sigma-Aldrich. Apomorphine hydrochloride (2073), MLS1547 (6171), ropinirole (3680), quinpirole hydrochloride (1061), dopamine hydrochloride (3548), cabergoline (2664), bromocriptine mesylate (0427), forskolin (1099), SCH23390 (0925), PTX (3097), haloperidol hydrochloride (0931), L-741,626 (1003) and roxindole (1559) were obtained from Tocris. UNC9994 (A16087) was purchased from AdooQ Bioscience. Lambda-phosphatase (P0753S) was obtained from Santa Cruz. Compound 101 (HB2840) was obtained from Hello Bio. Terguride, PMA, forskolin, L-741,626, aripiprazole, pergolide, apomorphine, MLS1547, ropinirole, cabergoline, bromocriptine, haloperidol, roxindole, UNC9994 and compound 101 are DMSO-soluble and all the other mentioned compounds are water-soluble.
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7

Dopaminergic Receptor Binding Assay

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Compounds used in this study were purchased from Sigma-Aldrich (St. Louis, MO) unless indicated otherwise: HEPES, sodium pyruvate, penicillin, streptomycin, 2-mercaptoethanol, D-glucose, bovine serum albumin (Merck Millipore, Darmstadt, Germany), glacial acetic acid, heptanesulfonic acid, methanol, glutathione, NaOH, EDTA, dimethyl sulfoxide, L-DOPA, dopamine hydrochloride, S-(−)-raclopride (+)-tartrate salt, R-(−)-deprenyl hydrochloride, pargyline hydrochloride, ascorbic acid, (S)-(−)-sulpiride (Tocris, Bristol, United Kingdom), (−)-quinpriole Hydrochloride (Tocris), R-2230 (link) (gift of Dr. Amy Newman, synthesized at NIDA, NIH, Baltimore, MD), ML32131 (link) (synthesized at NINDS, NIH, Bethesda, MD) and [3H]L-DOPA (Dihydroxyphenylalanine, L-3,4-[ring 2,5,6-3H]) (American Radiolabeled Chemicals, St. Louis, MO).
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8

Cocktail Stimulation of Neurotransmitters

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A cocktail was prepared freshly with AMPA (1 μM, Sigma-Aldrich), noradrenaline (1 μM, Sigma-Aldrich), kainic acid (kainate), ibotenic acid, serotonin, histamine dihydrochloride, dopamine hydrochloride, and N-methyl-D-aspartate (NMDA) (each 1 μM, from Tocris Bioscience), carbachol (10 μM, Sigma-Aldrich), and orexin (0.01 μM, Sigma-Aldrich). Distilled H 2 O was added in sister cultures as control in all stimulation protocols. To avoid differences in gene expression caused circadian rhythms, stimulations and RNA and protein extractions from different conditions were performed at the same circadian time. RNA was extracted three hours after stimulation and again 24 hours later (recovery).
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