Best PSD95 Antibody for Dissociated Neurons

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Anatomy and Neurobiology
University of California Irvine
Post-doctoral researcher

Company:

Thermo Fisher

Product Name:

Mouse anti-PSD95

Catalog Number:

MA1-046

Stress in vivo, and CRH application in vitro, cause dendritic spine loss in hippocampal pyramidal neurons. This loss of spines, and subsequent synapses, is likely the underlying mechanism through which severe stress disrupts learning and memory. CRH, in combination with neuronal activity and NMDA receptor activation, recruits the actin destabilizing protein, calpain, to break down the actin cytoskeleton resulting in spine loss. Identifying the downstream signaling from CRH receptors could reveal potential therapeutic targets for diseases such as post-traumatic stress disorder (PTSD), anxiety, and depression.

Experimental Design and Results Summary

Applications

Immunofluorescence

Sample

Hippocampal pyramidal neurons

Primary Incubation

1:4000

Blocking Agent

3% BSA

Secondary Incubation

1:400

Tertiary Incubation

None

Detection

Fluorescence

Results Summary

PSD95 was visible as early as 12 days in vitro, around dendritic branches. By 17 days in vitro hippocampal pyramidal neurons had PSD95 positive puncta in 5th and 6th dendritic branches. Immunocytochemistry was punctate and can be used as an indirect measure of excitatory synapses.

Additional Notes

4% PFA fix for 15 minutes

Related Categories

Image Gallery

Summary

The Good

Punctate stain, very specific, holds up to confocal imaging

The Bad

Only used primary diluted antibody once

The Bottom Line

Great purchase, worth the money to try. For slices, however, I would recommend Thermo Fisher mouse-anti PSD95 MA1-045.

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