Article

Intracranial Injection of Adeno-associated Viral Vectors

Neurobiology and Anatomy, University of Rochester, USA.
Journal of Visualized Experiments 11/2010; DOI: 10.3791/2140
Source: PubMed

ABSTRACT Intracranial injection of viral vectors engineered to express a fluorescent protein is a versatile labeling technique for visualization of specific subsets of cells in different brain regions both in vivo and in brain sections. Unlike the injection of fluorescent dyes, viral labeling offers targeting of individual cell types and is less expensive and time consuming than establishing transgenic mouse lines. In this technique, an adeno-associated viral (AAV) vector is injected intracranially using stereotaxic coordinates, a micropipette and an automated pump for precise delivery of AAV to the desired area with minimal damage to the surrounding tissue. Injection parameters can be tailored to individual experiments by adjusting the animal age at injection, injection location, volume of injection, rate of injection, AAV serotype and the promoter driving gene expression. Depending on the conditions chosen, virally-induced transgene expression can allow visualization of groups of cells, individual cells or fine cellular processes, down to the level of dendritic spines. The experiment shown here depicts an injection of double-stranded AAV expressing green fluorescent protein for the labeling of neurons and glia in the mouse primary visual cortex.

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Questions & Answers about this publication

  • Kamal Hamdy added an answer in Micropipettes:
    How can I calibrate the volume I have to inject in brain mouse with glass pipette?

    I want to inject a virus in the striatum. For this I used before hamilton seringe with 30G needles. But now I want to inject with glass pipette calibrated Witerol MICROPIPETTE WIRETROL 5μL. To calibrate the pompe injector I need the volume and the diameter of the micropipette. BUt I dont have the last information.

    Any one have any Idea or advice on the how I can calibrate it, and know the volume that I inject.

    Thank you