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6 protocols using mouse anti mbp

1

Immunohistochemistry of Cultured Cells and Brain Slices

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Cultured cells or brain slices (30 μm) were fixed with 4% paraformaldehyde followed by three washes in PBS and permeabilized with 0.1% Triton X-100 for 10 min (except for O4, O1 immunostainning) then blocked in 10% goat serum (Invitrogen Corp. USA) for 1 h following incubation with the primary antibody overnight at 4 °C. Primary antibodies were diluted in blocking solutions as follows: mouse anti-MBP (Biolegend, USA; 1:500), mouse anti-APC, CC1 clone (Millipore, USA; 1:500), mouse anti-O4 (R&D Systems Inc, USA, 1:800), mouse anti-O1 (R&D Systems Inc, USA, 1:800), rabbit anti-PDGFRα (Cell Signalling Technology, USA; 1:500), rabbit anti-glial fibrillary acidic protein (GFAP, Biolegend, USA; 1:500) mouse anti-BrdU (Sigma St Louis, USA; 1:500). The tissue or cells were then washed with PBS and incubate in Alexa Flour-conjugated secondary antibodies (Invitrogen Corp. USA; 1:500) for 1 h. Images were obtained using Olympus photomicroscope and analyzed using Image-Pro plus 6.0 software.
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2

Quantification of MBP and Actin in Injured Brains

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At P10 and P17, the HI injured brains were carefully removed as completed and rapidly as possible. The tissue was homogenized by a magnetic grinder in protein extract solution (T-PER Tissue Protein Extraction Reagent, Halt Protease Inhibitor Cocktail; Thermo Fisher Scientific, Waltham, MA, USA). The supernatants were reserved after centrifugation. Supernatant with 50 µg of total protein was then denatured at 95 ℃ for 5 min and separated using sodium dodecyl sulfate polyacrylamide gel electrophoresis (12%). Next, the protein was transferred to a nitrocellulose membrane and saturated for 2 h with blocking buffer (7% defatted milk) followed by the primary antibody (mouse anti-MBP, 1:1,000, BioLegend; mouse anti-actin, 1:1,000, Origene Technologies, Rockville, MD, USA) and incubation overnight at 4 ℃. After rewarming for 30 min, the membranes were incubated in the secondary antibody [goat anti-mouse IgG-horseradish peroxidase (HRP), 1:500; goat anti-rabbit IgG-HRP, 1:500, Absin, Shanghai, China] for 1 h. A ChemiDocXRS+ imaging system and ImageLab software (Bio-Rad, Hercules, CA, USA) were used for visualization and densitometric analysis after 5 min of immersion in enhanced chemiluminescence substrate (Thermo Fisher Scientific). The strips were analyzed using ImageLab version 5.0 (Bio-Rad).
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3

Oligodendrocyte Precursor Cell Differentiation

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OPCs were cultured on 10 mm glass coverslips for 2 days. To analyze differentiation, cells were cultured for an additional 5 days in transferred astrocyte medium with or without LIF-neutralizing antibody (10 μg; R&D Systems, catalog no. AB-449-NA) or normal goat IgG (10 μg; R&D Systems, catalog no. AB-108-C). Cells were fixed in 4% paraformaldehyde and blocked with PBS containing 3% bovine serum albumin and 0.1% Triton X-100 for 10 min. Cells were incubated at 4°C overnight with primary antibodies against PDGFRα (rabbit anti-PDGFRα, 1:1000; Santa Cruz Biotechnology, catalog no. sc-338) and MBP (mouse anti-MBP, 1:500; BioLegend, catalog no. 836504). Cells were then labeled with the secondary antibodies Alexa Fluor donkey anti-rabbit (594) and anti-mouse (488) IgG (1:300; Invitrogen) at room temperature for 1.5 hours in the dark. After staining nuclei with 4′,6-diamidino-2-phenylindole (DAPI) Fluoromount-G (Southern Biotechnology Associates), fluorescence images were acquired using the FluoView FV10i confocal microscope (Olympus).
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4

Western Blot Analysis of Protein Expression

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The protein concentration of each sample was measured using the Lowry method and the colorimetric reaction was measured on a SpectraMax M3 plate reader (Molecular Devices). 10–40µg of total protein was loaded on mini Protean TGX Precast gels (Biorad). After electrophoresis, proteins were blotted on a PVDF membrane (Biorad) and blocked in 5% Blotting Grade Blotter (Biorad) diluted in Tris buffered saline (TBS) containing 0.1% Tween 20 (TBST). Blots were then incubated with either of the following antibodies: chicken anti-human MCT1 antibody, mouse anti-PLP (MilliporeSigma), mouse anti CNPase (MilliporeSigma), rabbit anti-MCT2 (MilliporeSigma), rabbit anti-GLUT1 (abcam), rabbit anti-GLUT3 (abcam), mouse anti-MBP (Biolegend), mouse anti-MOG (MilliporeSigma), rabbit anti-Connexin-43 (MilliporeSigma), mouse anti-GAPDH (Thermo Scientific), and mouse anti-MAG (MilliporeSigma)(for more details see Key Resources Table). Membranes were overnight incubated with primary antibodies at 4°C. Membranes were washed with TBST and incubated with HRP labeled secondary antibodies for 1 hour at room temperature. After two washes in TBST and one wash in TBS, membranes were exposed to ECL reagent for 2 min. (Thermo Scientific) and chemiluminescent signal was detected with the LAS Imager 4000 (GE Healthcare).
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5

Western Blot Analysis of Protein Expression

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The protein concentration of each sample was measured using the Lowry method and the colorimetric reaction was measured on a SpectraMax M3 plate reader (Molecular Devices). 10–40µg of total protein was loaded on mini Protean TGX Precast gels (Biorad). After electrophoresis, proteins were blotted on a PVDF membrane (Biorad) and blocked in 5% Blotting Grade Blotter (Biorad) diluted in Tris buffered saline (TBS) containing 0.1% Tween 20 (TBST). Blots were then incubated with either of the following antibodies: chicken anti-human MCT1 antibody, mouse anti-PLP (MilliporeSigma), mouse anti CNPase (MilliporeSigma), rabbit anti-MCT2 (MilliporeSigma), rabbit anti-GLUT1 (abcam), rabbit anti-GLUT3 (abcam), mouse anti-MBP (Biolegend), mouse anti-MOG (MilliporeSigma), rabbit anti-Connexin-43 (MilliporeSigma), mouse anti-GAPDH (Thermo Scientific), and mouse anti-MAG (MilliporeSigma)(for more details see Key Resources Table). Membranes were overnight incubated with primary antibodies at 4°C. Membranes were washed with TBST and incubated with HRP labeled secondary antibodies for 1 hour at room temperature. After two washes in TBST and one wash in TBS, membranes were exposed to ECL reagent for 2 min. (Thermo Scientific) and chemiluminescent signal was detected with the LAS Imager 4000 (GE Healthcare).
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6

Western Blot for Notch Signaling

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Cells were harvest in lysis buffer on ice. Sample proteins were loaded on SDS-PAGE gel and blotted onto PVDF membranes. After blocking in 5% (w/v) non-fat milk for 1 h, proteins were probed with primary antibodies at 4 °C overnight. Primary antibodies were diluted in 5% bovine serum albumin blocking buffer as follows: rabbit anti-Jagged1 (Cell Signalling Technology, USA; 1:500), rabbit anti-Notch1 (Cell Signalling Technology, USA; 1:1000), mouse anti-MBP (Biolegend, USA; 1:1000). Membranes were then incubated in horseradish peroxidase-conjugated secondary antibody for 1 h, the immunoreactive proteins can be detected by chemiluminescence ECL agents (Millipore, USA).
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