Supported by the Fazit Foundation Graduate fellowship to S.S., the Federal Ministry of Education and Research (BMBF 01 EO 0803) to K.B. and the European Commission FP7 Grant PIRG08-GA-2010-276989, NEUREX, and the German Research Foundation Grant SCHA 1442/3-1 to C.S. The authors have no conflicting financial interests.

1. Isolation and Plating of Mixed Cortical Cells
Mixed cortical cell isolation for astrocyte cultures can be performed using P1 to P4 mouse pups. In order to achieve proper astrocyte density it is necessary to use 4 mouse pup cortices per T75 tissue culture flask. Therefore, volumes in the following protocol are calculated for a cell preparation using 4 mouse pups.
<ol>
	<li>Before starting the dissection procedure, prewarm 30 ml of astrocyte culture media (DMEM, high glucose + 10% heat-inac...

<ol>
	<li>Nedergaard, M., Ransom, B., Goldman, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=New+roles+for+astrocytes:+redefining+the+functional+architecture+of+the+brain.">New roles for astrocytes: redefining the functional architecture of the brain.</a> Trends Neurosci. 26, 523-530 (2003).</li><li>Belanger, M., Allaman, I., Magistretti, P. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Brain+energy+metabolism:+focus+on+astrocyte-neuron+metabolic+cooperation.">Brain energy metabolism: focus on astrocyte-neuron metabolic cooperation.</a> Cell Metab. 14, 724-738 (2011).</li><li>Allen, N. J., Barres, B. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neuroscience:+Glia+-+more+than+just+brain+glue.">Neuroscience: Glia - more than just brain glue.</a> Nature. 457, 675-677 (2009).</li><li>Ballas, N., Lioy, D. T., Grunseich, C., Mandel, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Non-cell+autonomous+influence+of+MeCP2-deficient+glia+on+neuronal+dendritic+morphology.">Non-cell autonomous influence of MeCP2-deficient glia on neuronal dendritic morphology.</a> Nat. Neurosci. 12, 311-317 (2009).</li><li>Jacobs, S., Nathwani, M., Doering, L. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fragile+X+astrocytes+induce+developmental+delays+in+dendrite+maturation+and+synaptic+protein+expression.">Fragile X astrocytes induce developmental delays in dendrite maturation and synaptic protein expression.</a> BMC Neurosci. 11, 132 (2010).</li><li>Kaneko, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=New+neurons+clear+the+path+of+astrocytic+processes+for+their+rapid+migration+in+the+adult+brain.">New neurons clear the path of astrocytic processes for their rapid migration in the adult brain.</a> Neuron. 67, 213-223 (2010).</li><li>Min, R., Nevian, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocyte+signaling+controls+spike+timing-dependent+depression+at+neocortical+synapses.">Astrocyte signaling controls spike timing-dependent depression at neocortical synapses.</a> Nat. Neurosci. , (2012).</li><li>Eroglu, C., Barres, B. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Regulation+of+synaptic+connectivity+by+glia.">Regulation of synaptic connectivity by glia.</a> Nature. 468, 223-231 (2010).</li><li>Sasaki, T., Matsuki, N., Ikegaya, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Action-potential+modulation+during+axonal+conduction.">Action-potential modulation during axonal conduction.</a> Science. 331, 599-601 (2011).</li><li>Bozoyan, L., Khlghatyan, J., Saghatelyan, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocytes+control+the+development+of+the+migration-promoting+vasculature+scaffold+in+the+postnatal+brain+via+VEGF+signaling.">Astrocytes control the development of the migration-promoting vasculature scaffold in the postnatal brain via VEGF signaling.</a> J. Neurosci. 32, 1687-1704 .</li><li>Alvarez, J. I., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Hedgehog+pathway+promotes+blood-brain+barrier+integrity+and+CNS+immune+quiescence.">The Hedgehog pathway promotes blood-brain barrier integrity and CNS immune quiescence.</a> Science. 334, 1727-1731 (2011).</li><li>Abbott, N. J., Ronnback, L., Hansson, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocyte-endothelial+interactions+at+the+blood-brain+barrier.">Astrocyte-endothelial interactions at the blood-brain barrier.</a> Nat. Rev. Neurosci. 7, 41-53 (2006).</li><li>Tao-Cheng, J. H., Nagy, Z., Brightman, M. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tight+junctions+of+brain+endothelium+in+vitro+are+enhanced+by+astroglia.">Tight junctions of brain endothelium in vitro are enhanced by astroglia.</a> J. Neurosci. 7, 3293-3299 (1987).</li><li>Gordon, G. R., Choi, H. B., Rungta, R. L., Ellis-Davies, G. C., MacVicar, B. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Brain+metabolism+dictates+the+polarity+of+astrocyte+control+over+arterioles.">Brain metabolism dictates the polarity of astrocyte control over arterioles.</a> Nature. 456, 745-749 (2008).</li><li>Silver, J., Miller, J. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Regeneration+beyond+the+glial+scar.">Regeneration beyond the glial scar.</a> Nat. Rev. Neurosci. 5, 146-156 (2004).</li><li>Schachtrup, C., Moan, N. L. e., Passino, M. A., Akassoglou, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hepatic+stellate+cells+and+astrocytes:+Stars+of+scar+formation+and+tissue+repair.">Hepatic stellate cells and astrocytes: Stars of scar formation and tissue repair.</a> Cell Cycle. 10, 1764-1771 (2011).</li><li>Schachtrup, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fibrinogen+triggers+astrocyte+scar+formation+by+promoting+the+availability+of+active+TGF-beta+after+vascular+damage.">Fibrinogen triggers astrocyte scar formation by promoting the availability of active TGF-beta after vascular damage.</a> J. Neurosci. 30, 5843-5854 (2010).</li><li>Bushong, E. A., Martone, M. E., Jones, Y. Z., Ellisman, M. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Protoplasmic+astrocytes+in+CA1+stratum+radiatum+occupy+separate+anatomical+domains.">Protoplasmic astrocytes in CA1 stratum radiatum occupy separate anatomical domains.</a> J. Neurosci. 22, 183-192 (2002).</li><li>Ogata, K., Kosaka, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Structural+and+quantitative+analysis+of+astrocytes+in+the+mouse+hippocampus.">Structural and quantitative analysis of astrocytes in the mouse hippocampus.</a> Neuroscience. 113, 221-233 (2002).</li><li>Dabir, D. V., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Impaired+glutamate+transport+in+a+mouse+model+of+tau+pathology+in+astrocytes.">Impaired glutamate transport in a mouse model of tau pathology in astrocytes.</a> J. Neuroscience. 26, 644-654 (2006).</li><li>Wisniewski, H. M., Wegiel, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Spatial+relationships+between+astrocytes+and+classical+plaque+components.">Spatial relationships between astrocytes and classical plaque components.</a> Neurobiol. Aging. 12, 593-600 (1991).</li><li>Shin, J. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Expression+of+mutant+huntingtin+in+glial+cells+contributes+to+neuronal+excitotoxicity.">Expression of mutant huntingtin in glial cells contributes to neuronal excitotoxicity.</a> J. Cell Biol. 171, 1001-1012 (2005).</li><li>Wakabayashi, K., Hayashi, S., Yoshimoto, M., Kudo, H., Takahashi, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=NACP/alpha-synuclein-positive+filamentous+inclusions+in+astrocytes+and+oligodendrocytes+of+Parkinson's+disease+brains.">NACP/alpha-synuclein-positive filamentous inclusions in astrocytes and oligodendrocytes of Parkinson's disease brains.</a> Acta Neuropathol. 99, 14-20 (2000).</li><li>Lioy, D. T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+role+for+glia+in+the+progression+of+Rett's+syndrome.">A role for glia in the progression of Rett's syndrome.</a> Nature. 475, 497-500 (2011).</li><li>Quinlan, R. A., Brenner, M., Goldman, J. E., Messing, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=GFAP+and+its+role+in+Alexander+disease.">GFAP and its role in Alexander disease.</a> Exp. Cell Res. 313, 2077-2087 (2007).</li><li>Beck, K., Schachtrup, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Vascular+damage+in+the+central+nervous+system:+a+multifaceted+role+for+vascular-derived+TGF-beta.">Vascular damage in the central nervous system: a multifaceted role for vascular-derived TGF-beta.</a> Cell Tissue Res. 347, 187-201 (2012).</li><li>McCarthy, K. D., de Vellis, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Preparation+of+separate+astroglial+and+oligodendroglial+cell+cultures+from+rat+cerebral+tissue.">Preparation of separate astroglial and oligodendroglial cell cultures from rat cerebral tissue.</a> J. Cell Biol. 85, 890-902 (1980).</li><li>Siao, C. J., Tsirka, S. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tissue+plasminogen+activator+mediates+microglial+activation+via+its+finger+domain+through+annexin+II.">Tissue plasminogen activator mediates microglial activation via its finger domain through annexin II.</a> J. Neurosci. 22, 3352-3358 (2002).</li><li>Armstrong, R. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Isolation+and+characterization+of+immature+oligodendrocyte+lineage+cells.">Isolation and characterization of immature oligodendrocyte lineage cells.</a> Methods. 16, 282-292 (1998).</li><li>Cahoy, J. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+transcriptome+database+for+astrocytes,+neurons,+and+oligodendrocytes:+a+new+resource+for+understanding+brain+development+and+function.">A transcriptome database for astrocytes, neurons, and oligodendrocytes: a new resource for understanding brain development and function.</a> J. Neurosci. 28, 264-278 (2008).</li><li>Anthony, T. E., Heintz, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+folate+metabolic+enzyme+ALDH1L1+is+restricted+to+the+midline+of+the+early+CNS,+suggesting+a+role+in+human+neural+tube+defects.">The folate metabolic enzyme ALDH1L1 is restricted to the midline of the early CNS, suggesting a role in human neural tube defects.</a> J. Comp. Neurol. 500, 368-383 (2007).</li><li>Skoff, R. P., Knapp, P. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Division+of+astroblasts+and+oligodendroblasts+in+postnatal+rodent+brain:+evidence+for+separate+astrocyte+and+oligodendrocyte+lineages.">Division of astroblasts and oligodendroblasts in postnatal rodent brain: evidence for separate astrocyte and oligodendrocyte lineages.</a> Glia. 4, 165-174 (1991).</li><li>Molofsky, A. V., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocytes+and+disease:+a+neurodevelopmental+perspective.">Astrocytes and disease: a neurodevelopmental perspective.</a> Genes Dev. 26, 891-907 (2012).</li><li>Zhang, Y., Barres, B. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocyte+heterogeneity:+an+underappreciated+topic+in+neurobiology.">Astrocyte heterogeneity: an underappreciated topic in neurobiology.</a> Curr. Opin. Neurobiol. 20, 588-594 (2010).</li><li>Foo, L. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+of+a+method+for+the+purification+and+culture+of+rodent+astrocytes.">Development of a method for the purification and culture of rodent astrocytes.</a> Neuron. 71, 799-811 (2011).</li><li>Jungblut, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Isolation+and+characterization+of+living+primary+astroglial+cells+using+the+new+GLAST-specific+monoclonal+antibody+ACSA-1.">Isolation and characterization of living primary astroglial cells using the new GLAST-specific monoclonal antibody ACSA-1.</a> Glia. 60, 894-907 (2012).</li></ol>

The method outlined here is based on the astrocyte culture preparation from rodent neonatal brains, originally described by McCarthy and de Vellis in 1980 27. The modified method of the isolation and culture of cortical astrocytes from postnatal P1 to P4 mouse brain presented here is fast, yields pure primary astrocytes and is highly reproducible. This technique can easily be transferred to isolate astrocytes from other species, such as from rat or pig and from other brain regions, such as the spinal cor...

Astrocytes are a very abundant cell type in the central nervous system (CNS). The ratio of astrocytes to neurons is 1:3 in the cortex of mice and rats, whereas there are 1.4 astrocytes per neuron in the human cortex 1. Interest in astrocyte function has increased dramatically in recent years. A key function of astrocytes is their role in providing structural and metabolic support to neurons 2,3. Newly discovered roles for astrocytes cover a broad spectrum of functions. These include guiding the migration of developing axons and certain neuroblasts during development4-6, functions in synaptic transmission, synapse strength and information processing by neural circuits 7-9, roles in blood-brain barrier (BBB) formation 10 and integrity 11-13 and regulation of the cerebrovascular tone 14. Another major feature of astrocytes is their response to injury. Under pathological conditions astrocytes become reactive and further upregulate the expression of the intermediate filament glial fibrillary acidic protein (GFAP) and inhibitory extracellular matrix (ECM) proteins 15,16. Reactive astrocytes demarcate the injury site from healthy tissue by forming a glial scar, which consists mainly of astrocyte secreted ECM proteins of the chondroitin sulfate proteoglycan (CSPG) family, the major factors that inhibit axonal regeneration after CNS injury 15-17.
Astrocytes originate from radial glial (RG) cells during late embryogenesis and early postnatal life. After astrocyte specification has occurred, astrocyte precursors migrate to their final positions, where they begin the process of terminal differentiation. In vivo, astrocytes appear to be mature three to four weeks after birth as indicated by their typical morphology 18,19. A subpopulation of RG cells convert into subventricular zone astrocytes (type B cells). Both, RG and type B cells function as astrocyte-like neural stem cells (NSCs) during development and in the adult, respectively. Like astrocytes, RG and type B cells also express the astrocyte-specific glutamate transporter (GLAST), brain lipid-binding protein (BLBP), and GFAP, indicating that these markers cannot be exclusively used to specifically label adult astrocytes. In contrast to adult parenchymal astrocytes, which do not divide in the healthy brain, RG and type B cells exhibit stem cell potential such as the capacity to self-renew. Dysregulation of astrocytes has been implicated in numerous pathologies, including Alzheimer's disease 20,21, Huntington's disease 22, Parkinson's disease 23, Rett syndrome 24 and Alexander's disease 25. Moreover, astrocytes react to all insults of the CNS, leading to astrocyte activation and astrocytic glial scar formation 16,26. The astrocytic glial scar that forms following brain trauma or spinal cord injury is thought to be the prime barrier preventing neuronal regeneration 15.
The development of reliable methods to isolate and maintain purified populations of cells has been essential to our understanding of the nervous system. Pioneering work by McCarthy and de Vellis enables investigators to date to prepare nearly pure cultures of astrocytes from neonatal rat tissue 27. Much has been learned about astrocyte biology using this method, which is presented here in a slightly modified form for isolating mouse cortical astrocytes. Complementing in vivo studies, astrocytes as well as conditioned medium obtained using the described in vitro culture, are valuable tools to further gain insights into astrocyte functions.

<table border="1">
 <tbody>
 <tr>
 <td>Name of working solution</td>
 <td>Company</td>
 <td>Catalogue number</td>
 <td>Final concentration</td>
 </tr>
 <tr>
 <td></td>
 <td></td>
 <td></td>
 <td>Astrocyte culture media</td>
 </tr>
 <tr>
 <td>DMEM, high glucose</td>
 <td>Life Technologies</td>
 <td>31966-021</td>
 <td></td>
 </tr>
 <tr>
 <td>FBS, heat-inactivated</td>
 <td>Life Technologies</td>
 <td>10082-147</td>
 <td>Final Concentration: 10%</td>
 </tr>
 <tr>
 <td>Penicillin-Streptomycin</td>
 <td>Life Technologies</td>
 <td>15140-122</td>
 <td>Final Concentration: 1%</td>
 </tr>
 <tr>
 <td></td>
 <td></td>
 <td></td>
 <td>Solution for brain tissue digestion</td>
 </tr>
 <tr>
 <td>HBSS</td>
 <td>Life Technologies</td>
 <td>14170-088</td>
 <td></td>
 </tr>
 <tr>
 <td>2.5% Trypsin</td>
 <td>Life Technologies</td>
 <td>15090-046</td>
 <td>Final Concentration: 0.25%</td>
 </tr>
 <tr>
 <td></td>
 <td></td>
 <td></td>
 <td>Other</td>
 </tr>
 <tr>
 <td>70% (vol/vol) ethanol</td>
 <td>Roth</td>
 <td>9065.2</td>
 <td></td>
 </tr>
 <tr>
 <td>Poly-D-Lysine </td>
 <td>Millipore</td>
 <td>A-003-E</td>
 <td>50 &mu;g/ml </td>
 </tr>
 <tr>
 <td>Water</td>
 <td>PAA</td>
 <td>S15-012</td>
 <td>cell culture grade</td>
 </tr>
 <tr>
 <td>PBS</td>
 <td>PAA</td>
 <td>H15-002</td>
 <td>cell culture grade</td>
 </tr>
 <tr>
 <td>0.05% Trypsin-EDTA </td>
 <td>Life Technologies</td>
 <td>25300-062 </td>
 <td></td>
 </tr>
 <tr>
 <td>0.45 &mu;m Sterile filter </td>
 <td>Sartorius </td>
 <td>16555 </td>
 <td></td>
 </tr>
 <tr>
 <td>3.5 cm petri dish</td>
 <td>BD Falcon</td>
 <td>353001</td>
 <td></td>
 </tr>
 <tr>
 <td>15 ml Falcon tube</td>
 <td>BD Falcon</td>
 <td>352096</td>
 <td></td>
 </tr>
 <tr>
 <td>50 ml Falcon tube</td>
 <td>BD Falcon</td>
 <td>352070</td>
 <td></td>
 </tr>
 <tr>
 <td>75 cm2 Tissue culture flask</td>
 <td>BD Falcon</td>
 <td>353136</td>
 <td></td>
 </tr>
 <tr>
 <td>Forceps, fine </td>
 <td>Dumont</td>
 <td>2-1032; 2-1033</td>
 <td># 3c; # 5</td>
 </tr>
 <tr>
 <td>Forceps, flat tip</td>
 <td>KLS Martin</td>
 <td>12-120-11</td>
 <td></td>
 </tr>
 <tr>
 <td>13 cm surgical scissors</td>
 <td>Aesculap</td>
 <td>BC-140-R</td>
 <td></td>
 </tr>
 <tr>
 <td>Stereomicroscope</td>
 <td>Leica</td>
 <td></td>
 <td>MZ7.5</td>
 </tr>
 <tr>
 <td>Stereomicroscope + Camera</td>
 <td>Leica</td>
 <td></td>
 <td>MZ16F; DFC320</td>
 </tr>
 <tr>
 <td>Microscope + Camera</td>
 <td>Zeiss; Canon</td>
 <td></td>
 <td>Primo Vert; PowerShot A650 IS</td>
 </tr>
 <tr>
 <td>Centrifuge</td>
 <td>Eppendorf</td>
 <td>5805000.017</td>
 <td>Centrifuge5804R</td>
 </tr>
 <tr>
 <td>Orbital Shaker</td>
 <td>Thermo Scientific</td>
 <td>SHKE 4450-1CE</td>
 <td>MaxQ 4450 </td>
 </tr>
 <tr>
 <td>Water bath</td>
 <td>Julabo</td>
 <td></td>
 <td>SW20; 37 &deg;C</td>
 </tr>
 </tbody>
 </table>

isolation and culture of mouse cortical astrocytes

Astrocytes are an abundant cell type in the mammalian brain, yet much remains to be learned about their molecular and functional characteristics. In vitro astrocyte cell culture systems can be used to study the biological functions of these glial cells in detail. This video protocol shows how to obtain pure astrocytes by isolation and culture of mixed cortical cells of mouse pups. The method is based on the absence of viable neurons and the separation of astrocytes, oligodendrocytes and microglia, the three main glial cell populations of the central nervous system, in culture. Representative images during the first days of culture demonstrate the presence of a mixed cell population and indicate the timepoint, when astrocytes become confluent and should be separated from microglia and oligodendrocytes. Moreover, we demonstrate purity and astrocytic morphology of cultured astrocytes using immunocytochemical stainings for well established and newly described astrocyte markers. This culture system can be easily used to obtain pure mouse astrocytes and astrocyte-conditioned medium for studying various aspects of astrocyte biology.

Upon isolation of the complete mouse brain (Figure 1A), the cerebellum and the olfactory bulbs have to be removed (Figure 1B). The cortices are peeled of the mouse brain stem (Figure 1C) and meninges of the individual cortex (Figure 1D') are carefully removed (Figure 1E). Meninges are obvious by the meningeal artery system and incomplete removal results in contamination of the final astrocyte culture by meningeal cells and fibroblasts.</...

Watch this Scientific Journal Video about Isolation and Culture of Mouse Cortical Astrocytes at JoVE.com

Isolation and Culture of Mouse Cortical Astrocytes

Astrocytes have been recognized to be versatile cells participating in fundamental biological processes that are essential for normal brain development and function, and central nervous system repair. Here we present a rapid procedure to obtain pure mouse astrocyte cultures to study the biology of this major class of central nervous system cells.

Astrocytes  are an abundant cell type in the mammalian brain, yet much remains to be  learned about their molecular and functional characteristics. In ...

isolation-and-culture-of-mouse-cortical-astrocytes

Research

JoVE Journal

Neuroscience

90.1K vistas.  University of Freiburg. Los astrocitos se han reconocido para ser versátiles células que participan en los procesos biológicos fundamentales que son esenciales para el desarrollo normal del cerebro y la función, y la reparación del sistema nervioso central. Aquí presentamos un procedimiento rápido para obtener cultivos puros de astrocitos de ratón para estudiar la biología de esta clase importante de centrales células del sistema nervioso.