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A procedure for culturing astrocytes from white matter and the application of the siRNA technique for silencing the expression of their specific marker, S100A4.
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Neuroscience. Neuroanatomi.
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Neuroscience. Neuroanatomi.
2005 (English)In: Brain Research Brain Research Protocols, Vol. 15, no 2, 59-65 p.Article in journal (Refereed) Published
Abstract [en]

White matter astrocytes have physiological functions which are distinct from those of astrocytes in gray matter. White matter becomes highly non-permissive to neurite growth after injury, but the role of white matter astrocytes in this process is incompletely understood. Current protocols for making primary

astroglial cultures are inadequate for exploring the specific properties of white matter astrocytes in vitro. We describe a procedure for obtaining cultures of white matter astrocytes from the rodent corpus callosum. In this procedure, we take advantage of our previous finding that white, but not gray matter

astrocytes express the calcium-binding protein S100A4. S100A4 expressing astrocytes are abundant in the corpus callosum, and we show that cultures, highly enriched in S100A4 expressing white matter astrocytes, can be reproducibly generated from this area. Key factors for successful cultures are (i) meticulous dissection of the corpus callosum from 4-day-old rats, and (ii)

Percoll density gradient centrifugation to purify astrocytes. As a means of exploring the possible role of S100A4 in white matter astrocytes, we describe the use of the siRNA technique to eliminate the expression of S100A4 in our in vitro system.

Place, publisher, year, edition, pages
2005. Vol. 15, no 2, 59-65 p.
Identifiers
URN: urn:nbn:se:uu:diva-76080PubMedID: 15975528OAI: oai:DiVA.org:uu-76080DiVA: diva2:103991
Available from: 2006-02-23 Created: 2006-02-23 Last updated: 2011-01-11

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