Name: analysis of schwann-astrocyte interactions using in vitro assays
Uploaded: 2011-01-13T23:59:00
Description: Watch this Scientific Journal Video about Analysis of Schwann-astrocyte Interactions Using In Vitro Assays at JoVE.com

Nous tenons à remercier Philippe Warren pour son aide genre.

1. Assay limites: <ol><li> Préparation de base: diapositives Chambre sont recouvertes de poly-D-Lysine lames de verre la nuit et stériles sont préparés avant de commencer l&#39;expérience. Milieu est préparé en utilisant un milieu Eagle modifié par Dulbecco (DMEM), supplémenté avec 10% sérum de veau foetal (FCS), et 1% de pénicilline-streptomycine-Fungizon (FSP). Aussi une bouteille de calcium / magnésium libre solution saline équilibrée de Hanks (HBSS) est préparé. </li><li> Primaire des cellules de ...

<ol>
	<li>Assouline, J. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rat+astrocytes+and+Schwann+cells+in+culture+synthesize+nerve+growth+factor-like+neurite-promoting+factors.">Rat astrocytes and Schwann cells in culture synthesize nerve growth factor-like neurite-promoting factors.</a> Brain Res. 428, 103-118 (1987).</li><li>Taylor, J. S., Bampton, E. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Factors+secreted+by+Schwann+cells+stimulate+the+regeneration+of+neonatal+retinal+ganglion+cells.">Factors secreted by Schwann cells stimulate the regeneration of neonatal retinal ganglion cells.</a> J Anat. 204, 25-31 (2004).</li><li>Reichardt, L. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Integrins+and+cell+adhesion+molecules:+neuronal+receptors+that+regulate+axon+growth+on+extracellular+matrices+and+cell+surfaces.">Integrins and cell adhesion molecules: neuronal receptors that regulate axon growth on extracellular matrices and cell surfaces.</a> Dev Neurosci. 11, 332-347 (1989).</li><li>Chiu, A. Y., Monteros, ., Espinosa de los, A., Cole, R. A., Loera, S., 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=Laminin+and+s-laminin+are+produced+and+released+by+astrocytes,+Schwann+cells,+and+schwannomas+in+culture.">Laminin and s-laminin are produced and released by astrocytes, Schwann cells, and schwannomas in culture.</a> Glia. 4, 11-24 (1991).</li><li>Blakemore, W. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Remyelination+of+CNS+axons+by+Schwann+cells+transplanted+from+the+sciatic+nerve.">Remyelination of CNS axons by Schwann cells transplanted from the sciatic nerve.</a> Nature. 266, 68-69 (1977).</li><li>Andrews, M. R., Stelzner, D. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Evaluation+of+olfactory+ensheathing+and+schwann+cells+after+implantation+into+a+dorsal+injury+of+adult+rat+spinal+cord.">Evaluation of olfactory ensheathing and schwann cells after implantation into a dorsal injury of adult rat spinal cord.</a> J Neurotrauma. 24, 1773-1792 (2007).</li><li>Iwashita, Y., Fawcett, J. W., Crang, A. J., Franklin, R. J., Blakemore, W. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Schwann+cells+transplanted+into+normal+and+X-irradiated+adult+white+matter+do+not+migrate+extensively+and+show+poor+long-term+survival.">Schwann cells transplanted into normal and X-irradiated adult white matter do not migrate extensively and show poor long-term survival.</a> Exp Neurol. 164, 292-302 (2000).</li><li>Lakatos, A., Franklin, R. J., Barnett, S. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Olfactory+ensheathing+cells+and+Schwann+cells+differ+in+their+in+vitro+interactions+with+astrocytes.">Olfactory ensheathing cells and Schwann cells differ in their in vitro interactions with astrocytes.</a> Glia. 32, 214-225 (2000).</li><li>Lakatos, A., Barnett, S. C., Franklin, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Olfactory+ensheathing+cells+induce+less+host+astrocyte+response+and+chondroitin+sulphate+proteoglycan+expression+than+Schwann+cells+following+transplantation+into+adult+CNS+white+matter.">Olfactory ensheathing cells induce less host astrocyte response and chondroitin sulphate proteoglycan expression than Schwann cells following transplantation into adult CNS white matter.</a> Exp Neurol. 184, 237-246 (2003).</li><li>Ghirnikar, R. S., Eng, L. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocyte-Schwann+cell+interactions+in+culture.">Astrocyte-Schwann cell interactions in culture.</a> Glia. 11, 367-377 (1994).</li><li>Ghirnikar, R. S., Eng, L. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chondroitin+sulfate+proteoglycan+staining+in+astrocyte-Schwann+cell+co-cultures.">Chondroitin sulfate proteoglycan staining in astrocyte-Schwann cell co-cultures.</a> Glia. 14, 145-152 (1995).</li><li>Plant, G. W., Bates, M. L., Bunge, M. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Inhibitory+proteoglycan+immunoreactivity+is+higher+at+the+caudal+than+the+rostral+Schwann+cell+graft-transected+spinal+cord+interface.">Inhibitory proteoglycan immunoreactivity is higher at the caudal than the rostral Schwann cell graft-transected spinal cord interface.</a> Mol Cell Neurosci. 17, 471-487 (2001).</li><li>Fishman, P. S., Nilaver, G., Kelly, J. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrogliosis+limits+the+integration+of+peripheral+nerve+grafts+into+the+spinal+cord.">Astrogliosis limits the integration of peripheral nerve grafts into the spinal cord.</a> Brain Res. 277, 175-180 (1983).</li><li>Fok-Seang, J., Mathews, G. A., ffrench-Constant, C., Trotter, J., Fawcett, J. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Migration+of+oligodendrocyte+precursors+on+astrocytes+and+meningeal+cells.">Migration of oligodendrocyte precursors on astrocytes and meningeal cells.</a> Dev Biol. 171, 1-15 (1995).</li><li>Wilby, M. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=N-Cadherin+inhibits+Schwann+cell+migration+on+astrocytes.">N-Cadherin inhibits Schwann cell migration on astrocytes.</a> Mol Cell Neurosci. 14, 66-84 (1999).</li><li>Grimpe, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+role+of+proteoglycans+in+Schwann+cell/astrocyte+interactions+and+in+regeneration+failure+at+PNS/CNS+interfaces.">The role of proteoglycans in Schwann cell/astrocyte interactions and in regeneration failure at PNS/CNS interfaces.</a> Mol Cell Neurosci. 28, 18-29 (2005).</li><li>Afshari, F. T., Kwok, J. C., White, L., Fawcett, J. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Schwann+cell+migration+is+integrin-dependent+and+inhibited+by+astrocyte-produced.">Schwann cell migration is integrin-dependent and inhibited by astrocyte-produced.</a> Glia. , (2010).</li><li>Santos-Silva, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=FGF/heparin+differentially+regulates+Schwann+cell+and+olfactory+ensheathing+cell+interactions+with+astrocytes:+a+role+in+astrocytosis.">FGF/heparin differentially regulates Schwann cell and olfactory ensheathing cell interactions with astrocytes: a role in astrocytosis.</a> J Neurosci. 27, 7154-7167 (2007).</li><li>Afshari, F. T., Kwok, J. C., Fawcett, J. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Astrocyte-produced+ephrins+inhibit+schwann+cell+migration+via+VAV2+signaling.">Astrocyte-produced ephrins inhibit schwann cell migration via VAV2 signaling.</a> J Neurosci. 30, 4246-4255 (2007).</li></ol>

Les tests décrits ci-dessus ont été utilisés dans différentes études démontrant le rôle de multiples facteurs impliqués dans la formation frontière entre les astrocytes et Schwann limitées de migration de cellules de Schwann dans l&#39;environnement astrocytaire. Comprendre les mécanismes sous-jacents de ces événements est essentielle car elle permettrait le développement de stratégies visant à optimiser et améliorer l&#39;intégration des greffes de cellules de Schwann sui...

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		<div>
		<table border="1">
		<thead>
		<tr>
		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>DMEM</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>41966-029</td>
<td>&nbsp;</td>
<tr>
<td>HBSS</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>14170-088</td>
<td>&nbsp;</td>
<tr>
<td>FCS</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>10091-148</td>
<td>&nbsp;</td>
<tr>
<td>PSF</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>15240-062</td>
<td>&nbsp;</td>
<tr>
<td>BPE</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>13028-014</td>
<td>&nbsp;</td>
<tr>
<td>Forskolin</td>
<td>&nbsp;</td>
<td>Calbiochem</td>
<td>344273</td>
<td>&nbsp;</td>
<tr>
<td>Coverlips</td>
<td>&nbsp;</td>
<td>VWR-International</td>
<td>631-0149</td>
<td>&nbsp;</td>
<tr>
<td>Coverlips(rectangle)</td>
<td>&nbsp;</td>
<td>MENZEL-GLASER (Supplied by Thermo Scientifics)</td>
<td>BB022050A1</td>
<td>&nbsp;</td>
<tr>
<td>Chamber slides</td>
<td>&nbsp;</td>
<td>Nunc-LabTek </td>
<td>177380</td>
<td>&nbsp;</td>
<tr>
<td>4 well plates, 6 well plates</td>
<td>&nbsp;</td>
<td>Nunc</td>
<td>&nbsp;</td>
<td>4 well plates 
6 well plates</td>
</tr>
<tr>
<td>rat p75 antibody</td>
<td>&nbsp;</td>
<td>Millipore, Temecula,California</td>
<td>MAB365</td>
<td>&nbsp;</td>
<tr>
<td>GFAP antibody</td>
<td>&nbsp;</td>
<td>Dako</td>
<td>Z0334</td>
<td>&nbsp;</td>
<tr>
<td>Secondary antibodies (Alexa-conjugated)</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>A-11004 A-11034</td>
<td>Goat anti mouse 568 
Goat anti Rabbit 488</td>
</tr>
<tr>
<td>Secondary biotinylated </td>
<td>&nbsp;</td>
<td>Vector</td>
<td>&nbsp;</td>
<td>Goat anti mouse</td>
</tr>
<tr>
<td>DAB tablets </td>
<td>&nbsp;</td>
<td>Sigma-aldrich</td>
<td>D4418</td>
<td>&nbsp;</td>
<tr>
<td>ABC elite kit</td>
<td>&nbsp;</td>
<td>Vector</td>
<td>PK-6100</td>
<td>&nbsp;</td>
<tr>
<td>Fine Forceps </td>
<td>&nbsp;</td>
<td>FST</td>
<td>11295-10</td>
<td>&nbsp;</td>
<tr>
<td>Paraformaldehyde</td>
<td>&nbsp;</td>
<td>Sigma-Aldrich</td>
<td>P6168</td>
<td>&nbsp;</td>
<tr>
<td>Fluorosave</td>
<td>&nbsp;</td>
<td>Calbiochem</td>
<td>345789</td>
<td>&nbsp;</td>		</tbody>
		</table>
		</div>

analysis of schwann-astrocyte interactions using in vitro assays

Les cellules de Schwann sont l&#39;une des cellules couramment utilisés dans les stratégies de réparation suite à des blessures de la moelle épinière. Les cellules de Schwann sont capables de supporter la régénération axonale et la germination par les facteurs de croissance et en fournissant 1,2 sécrétant de promotion de croissance trois molécules d&#39;adhésion et des molécules de la matrice extracellulaire 4. En outre, ils myéliniser les axones démyélinisées au site de la lésion 5. Toutefois, suite à la transplantation, les cellules de Schwann ne migrent pas à partir du site de l&#39;implant et ne se mêlent avec les astrocytes hôte 6,7. Il en résulte la formation d&#39;une frontière nette entre les cellules de Schwann et les astrocytes, créant un obstacle pour les axones en croissance essayant de quitter l&#39;arrière du greffon dans le tissu hôte proximale et distale. Les astrocytes en contact avec les cellules de Schwann subissent également une hypertrophie et jusqu&#39;à réguler les molécules inhibitrices 8-13. Dans des essais in vitro ont été utilisées pour modéliser la cellule de Schwann-astrocytes interactions et ont été importantes dans la compréhension du mécanisme qui sous-tendent le comportement cellulaire. Ces tests in vitro comprennent test frontière, où une co-culture est faite en utilisant deux cellules différentes à chaque type de cellule d&#39;occupation des territoires différents avec seulement un petit écart qui sépare les deux fronts cellule. Comme les cellules se divisent et migrent, les deux fronts cellulaires se rapprocher les uns aux autres et finalement en collision. Cela permet au comportement des deux populations cellulaires à analyser à la frontière. Une autre variante de la même technique est de mélanger les deux populations cellulaires dans la culture et au fil du temps les deux types cellulaires séparer avec des cellules de Schwann groupées comme des îles dans entre les astrocytes ainsi que la création de plusieurs Schwann-astrocytes limites. Le second test utilisé dans l&#39;étude de l&#39;interaction des deux types cellulaires est le dosage de la migration cellulaires où le mouvement peut être suivi sur la surface de l&#39;autre type cellulaire monocouche 14,15. Ce dosage est communément appelé test lamelle inversé. Les cellules de Schwann sont cultivées sur des petits fragments de verre et ils sont inversés face cachée sur la surface de monocouches d&#39;astrocytes et de la migration est évaluée à partir du bord de la lamelle. Les deux dosages ont joué un rôle dans l&#39;étude des mécanismes sous-jacents impliqués dans l&#39;exclusion cellulaires et la formation de frontière. Certaines des molécules identifiées en utilisant ces techniques incluent le N-cadhérines 15, chondroïtine sulfate protéoglycanes (CSPG) 16,17, le FGF / Héparine 18, Eph / éphrines 19. Cet article vise à décrire de dosage et le dosage limite de migration en mode pas à pas et d&#39;élucider les éventuels problèmes techniques qui pourraient survenir.

Watch this Scientific Journal Video about Analysis of Schwann-astrocyte Interactions Using In Vitro Assays at JoVE.com

Analysis of Schwann-astrocyte Interactions Using In Vitro Assays

Cet article vise à décrire de manière progressive l&#39;couramment utilisés<em&gt; In vitro</em&gt; Essais utilisés dans l&#39;étude de cellules de Schwann-asrtocyte interactions.

Analyse de Schwann-astrocytes interactions à l&#39;aide In Vitro Tests

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