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Rabbit 800

Manufactured by LI COR

The Rabbit-800 is a laboratory instrument designed for quantitative immunoblotting and multiplex analysis. It utilizes near-infrared fluorescence technology to detect and quantify proteins separated by gel electrophoresis and transferred to a membrane. The Rabbit-800 provides high sensitivity and dynamic range for accurate protein quantification.

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2 protocols using rabbit 800

1

Western Blot Analysis of Synaptic Proteins

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Slices were scraped off the membrane, treated with 2x Laemelli buffer + 10 % 2-mercaptethanol (250 μL per 3 slices) vortexed, boiled, then frozen at -20 °C until use. For use, most samples were further diluted 1:2 and loaded 8 μl per lane in a precast 4-20 % gradient gel (Bio-rad). To detect the weaker signal for PSD95, 15 μl of undiluted sample was loaded. After incubation in primary antibody overnight, blots were probed with 1:5000 mouse-700 (Life Technologies) and rabbit-800 (LI-COR) secondary antibodies then imaged using a LI-COR Odyssey detection system. Band intensity (IKK) was quantified using Odyssey software then normalised to Tuj1 signal. Primary antibodies used: mouse synaptophysin (Abcam: 1:1000), rabbit tuj1 (Sigma: 1:2500), rabbit PSD95 (Abcam: 1:500), mouse VAMP2 (Synaptic Systems: 1:10,000) and mouse RT97 (Kind gift from Dr Diane Hanger 1:500). Tuj1-normalised protein expression was then compared between WT and TgCRND8 cultures, TgCRND8 values expressed as a percentage of the WT average.
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2

Quantifying Neuronal Cytoskeleton Proteins

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Following treatment, ganglia and neurites were collected and washed in PBS with complete, ethylenediaminetetraacetic acid (EDTA)-free protease inhibitor cocktail tablets (Sigma-Aldrich), and lysed directly into 2x Laemmli sample buffer. A total of 10 μL of each sample were separated on a 12% SDS-PAGE and transferred to PVDF membrane (Millipore) using the Bio-Rad Mini-PROTEAN III wet transfer system. Blots were blocked and incubated with primary antibodies overnight (in 1xTBS pH. 8.3, with 0.05% Tween 20 and 5% milk powder or 5% BSA). The antibodies were directed against α-tubulin (1/5,000; ab 15246, Abcam) and acetylated α-tubulin (1/5,000; T7451, Sigma) and detected with mouse-700 (Life Technologies) and rabbit-800 (LI-COR) secondary antibodies. Blots were then scanned and quantified using the Odyssey imaging system (LI-COR Biosciences, Lincoln, North Carolina).
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