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Glun1

Manufactured by BD
Sourced in United States

The GluN1 is a laboratory equipment product manufactured by BD. It is designed to detect and measure the presence of the GluN1 subunit, which is a critical component of the N-methyl-D-aspartate (NMDA) receptor in biological samples. The GluN1 product provides researchers with a tool to study the expression and distribution of this important neurological receptor.

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4 protocols using glun1

1

Characterization of IgSF11 Antibodies

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MBP fusion proteins containing human IgSF11 (aa 262-430) were used for immunization of guinea pigs (2003), and peptides containing mouse IgSF11 (aa 399-427) were used to immunize guinea pigs (2067) and rabbits (2068 and 2070). The specificity of anti-IgSF11 antibodies (2003) was confirmed by immunoblot experiments using Igsf11−/− brain lysates. The following antibodies have been described: PSD-95 (1688) 55 (link), SAP102 (1145) 52 (link), CaMKIIα (1299) 55 (link), CASK (1640) 56 (link), GluN2B (21266) 57 (link), GluA1 (1193) 56 (link), GluA2 (1195) 56 (link), and pan-GRIP (1756) 74 (link). The following antibodies were purchased: Myc and HA rabbit polyclonal, synaptophysin (Santa Cruz sc-789, sc-805, sc-9116), HA mouse monoclonal (Boehringer Mannheim 12CA5), GluA2 (75-002), PSD-95 (75-028), PSD-93 (75-057), SAP97 (75-030), SAP102 (75-058) (NeuroMab), GluA1 (Calbiochem PC246), GluA1, GluA2, synapsin I (Millipore MAB2263, MAB397, AB1543), GluN1 (BD Pharmingen 556308), GluN2B (Invitrogen 320600), GluN2A (AGC-002), GluN2B (AGC-003) (Alomone labs), SNAP-25 (BD Transduction Laboratories 610366), MAP2, and α-tubulin (Sigma M1406, T5168).
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2

Immunocytochemistry for AMPAR and NMDAR

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Immunocytochemistry was performed as described.27 (link) Cells were incubated in commercial AMPAR or NMDAR antibody (GluA2: 07-598, 1:1000, Millipore, Billerica, MA; GluA1: AB1504, 1:500, Millipore; GluN1: 556308, 1:1000, BD Biosciences, San Jose, CA) and CSF (range 1:10–1:100) in 1% bovine serum albumin in PBS overnight, 4°C. Each experiment included CSF from at least one individual without anti-AMPAR encephalitis; none showed CSF staining of AMPARs. Staining intensity was quantified using ImageJ software (National Institutes of Health, Bethesda, MD) as previously described.27 (link)
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3

Immunoblotting Quantification of Glutamate Receptors

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Immunoblotting was performed as previously described [19 (link)]. Protein samples (50 μg) were denatured, subjected to PAGE, and transferred to polyvinylidene difluoride membranes (Bio-Rad, Hercules, CA, USA). Membranes were incubated with primary antibodies to GluN1 (BD Biosciences, Cayey, Puerto Rico), GluN2A (Sigma), or GluN2B (BD Biosciences) at 4 °C overnight, and then anti-rabbit or anti-mouse IgG conjugated to horseradish peroxidase (Cell Signaling Technology) for 2 h at room temperature. Chemiluminescence (Visualizer Millipore, Charlottesville, VA, USA) was captured and quantified using a Kodak Imagestation 4000 MM.
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4

BNST Protein Extraction and Analysis

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For protein extraction, 0.33 mm tissue punches (slice thickness, 500 μm) obtained from the dlBNST 4–5 h following the final vapor chamber session were homogenized in homogenization buffer. Proteins were resolved by SDS-PAGE (10%) and transferred to nitrocellulose membranes, which were blocked in 5% milk in TBST and incubated with the appropriate primary and secondary antibodies; infrared-conjugated secondary antibodies (LiCor Biosciences, Lincoln, NE, United States) were used for detection with the Odyssey system (LiCor Biosciences). Densitometry was performed using Image J (National Institutes of Health, Bethesda, MD, United States) on images linearly adjusted for brightness and contrast. To combine blocks of experiments across blots, signals were normalized to GAPDH (1:10 000; Abcam, Cambridge, MA, United States) and calculated as a percentage of the control values on their respective blot. The following primary antibodies were used: GluN1 (1:2000; BD, Franklin Lakes, NJ, United States), GluN2B (1:2000; BD), and GluN2A (1:2000; Millipore Sigma, Burlington, MA, United States) (Wills et al., 2012 (link)).
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