Name: isolation of valvular endothelial cells
Uploaded: 2010-12-29T17:00:00
Description: Watch this Scientific Journal Video about Isolation of Valvular Endothelial Cells at JoVE.com

Dit onderzoek wordt ondersteund door de NSF LOOPBAAN award, de Hartwell Foundation en de American Heart Association (# 0830384N).

1. Voorbereiding <ol><li> Autoclaaf in een overdekte instrument lade de volgende items: <ol><li> Gekartelde weefsel pincet - Voor de behandeling van de folder weefsel </li><li> Tissue schaar (8 cm) - voor het snoeien van folder weefsel en knobbels </li><li> Wattenstaafjes - Voor het isoleren van de endotheliale laag van de folder of cusp </li></ol></li><li> Maak steriele collagenase oplossing <ol><li> Voeg 4,0 gram gemalen DMEM tot 250 ml van 18 MΩ water. </li><li> Voeg 1,11 gram natriumbicarbonaat. </li><li> Voeg (6...

<ol>
	<li>Thompson, R. P., Fitzharris, T. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Morphogenesis+of+the+truncus+arteriosus+of+the+chick+embryo+heart:+the+formation+and+migration+of+mesenchymal+tissue.">Morphogenesis of the truncus arteriosus of the chick embryo heart: the formation and migration of mesenchymal tissue.</a> Am J Anat. 154, 545-556 (1979).</li><li>Johnson, C. M., Fass, D. N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Porcine+cardiac+valvular+endothelial+cells+in+culture:+A+relative+deficiency+of+fibronectin+synthesis+in+vitro.">Porcine cardiac valvular endothelial cells in culture: A relative deficiency of fibronectin synthesis in vitro.</a> Lab Invest. 49 (5), 589-598 (1983).</li><li>Manduteanu, I., Popov, D., Radu, A., Simionescu, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Calf+cardiac+valvular+endothelial+cells+in+culture:+production+of+glycosaminoglycans,+prostacyclin+and+fibronectin.">Calf cardiac valvular endothelial cells in culture: production of glycosaminoglycans, prostacyclin and fibronectin.</a> J Mol Cell Cardiol. 20 (2), 103-118 (1988).</li><li>Cheunyg, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Techniques+for+isolating+and+purifying+porcine+aortic+valve+endothelial+cells.">Techniques for isolating and purifying porcine aortic valve endothelial cells.</a> JHVD. 17 (6), 674-681 (2008).</li><li>Paranya, G., Vineberg, S., Dvorin, E., Kaushal, S., Roth, S. J., Rabkin, E., Schoen, F. J., Bischoff, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Aortic+valve+endothelial+cells+undergo+transforming+growth+factor-beta-mediated+and+non-transforming+growth+factor-beta-mediated+transdifferentiation+in+vitro.">Aortic valve endothelial cells undergo transforming growth factor-beta-mediated and non-transforming growth factor-beta-mediated transdifferentiation in vitro.</a> Am J Pathol. 159 (4), 1335-1343 (2001).</li><li>Butcher, J. T., Penrod, A., Garcia, A. J. M., Nerem, R. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Unique+morphology+and+focal+adhesion+development+of+valvular+endothelial+cells+in+static+and+fluid+flow+environments.">Unique morphology and focal adhesion development of valvular endothelial cells in static and fluid flow environments.</a> Arterioscler Thromb Vasc Bio. 24 (1), 1429-1434 (2004).</li><li>Simmons, C. A., Grant, G. R., Manduchi, E., Davies, P. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Spatial+heterogeneity+of+endothelial+phenotypes+correlates+with+side-specific+vulnerability+to+calcification+in+normal+porcine+aortic+valves.">Spatial heterogeneity of endothelial phenotypes correlates with side-specific vulnerability to calcification in normal porcine aortic valves.</a> Circ Res. 96, 792-799 (2005).</li><li>Butcher, J. T., Tressel, S., Johnson, T., Turner, D., Sorescu, G., Jo, H., Nerem, R. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transcriptional+Profiles+of+Valvular+and+Vascular+Endothelial+Cells+Reveal+Phenotypic+Differences:+Influence+of+Shear+Stress.">Transcriptional Profiles of Valvular and Vascular Endothelial Cells Reveal Phenotypic Differences: Influence of Shear Stress.</a> Arterioscler Thromb Vasc Biol. 26, 69-69 (2006).</li><li>Parachuri, S., Yang, J. H., Aikawa, E., Melero-Martin, J. M., Khan, Z. A., Loukogeorgakis, S., Schoen, F. J., Bischoff, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+Pulmonary+Valve+Progenitor+Cells+Exhibit+Endothelial/Mesenchymal+Plasticity+in+Response+to+Vascular+Endothelial+Growth+Factor-A+and+Transforming+Growth+Factor-&#946;2.">Human Pulmonary Valve Progenitor Cells Exhibit Endothelial/Mesenchymal Plasticity in Response to Vascular Endothelial Growth Factor-A and Transforming Growth Factor-&#946;2.</a> Circ Res. 99 (8), 861-869 (2006).</li><li>Shi, Q. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Evidence+for+circulating+bone+marrow-derived+endothelial+cells.">Evidence for circulating bone marrow-derived endothelial cells.</a> Blood. 92, 362-367 (1998).</li><li>Rehman, J., Li, J., Orschell, C. M., March, K. 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Een begrip van valvulaire biologie is aangetast door de technische problemen te isoleren en kweken van zuivere populaties van valvulaire endotheelcellen. Typische isolatietechnieken betrekken enzymatische vertering van de onderliggende basale matrix of chemische dissociatie van endotheliale lijmverbindingen 2,3. Voorlopige isolatie experimenten werden kwalitatief onderzocht door het variëren van dissociatie agenten en incubatietijd. De resultaten van deze experimenten toonden aan dat EDTA (of trypsine-EDTA) ...

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		<th>Material Name</th>
		<th>Type</th>
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		<th>Catalogue Number</th>
		<th>Comment</th>
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<td>Dulbecco&#x2019;s Modified Eagle Medium</td>
<td>&nbsp;</td>
<td>Mediatech</td>
<td>50-103-PB</td>
<td>&nbsp;</td>
<tr>
<td>Fetal Bovine Serum</td>
<td>&nbsp;</td>
<td>Gibco</td>
<td>26140</td>
<td>&nbsp;</td>
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<td>Penicillin Streptomycin</td>
<td>&nbsp;</td>
<td>Gibco</td>
<td>15140-122</td>
<td>&nbsp;</td>
<tr>
<td>0.25% Trypsin-EDTA</td>
<td>&nbsp;</td>
<td>Gibco</td>
<td>25200</td>
<td>&nbsp;</td>
<tr>
<td>Heparin Sodium Salt</td>
<td>&nbsp;</td>
<td>Sigma-Aldrich</td>
<td>H4784-1G</td>
<td>&nbsp;</td>
<tr>
<td>Collagenase Type 2</td>
<td>&nbsp;</td>
<td>Worthington Biochemical</td>
<td>LS004176</td>
<td>&nbsp;</td>
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<td>DPBS</td>
<td>&nbsp;</td>
<td>Gibco</td>
<td>21300-058</td>
<td>&nbsp;</td>
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<td>Rat Tail Collagen</td>
<td>&nbsp;</td>
<td>BD Biosciences</td>
<td>354236</td>
<td>&nbsp;</td>
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<td>Critical Swabs</td>
<td>&nbsp;</td>
<td>VWR</td>
<td>89031-270</td>
<td>&nbsp;</td>
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<td>Sodium Bicarbonate</td>
<td>&nbsp;</td>
<td>Sigma-Aldrich</td>
<td>55761</td>
<td>&nbsp;</td>
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<td>T25 Flasks</td>
<td>&nbsp;</td>
<td>BD Biosciences</td>
<td>353018</td>
<td>&nbsp;</td>
<tr>
<td>T75 Flasks</td>
<td>&nbsp;</td>
<td>BD Biosciences</td>
<td>353136</td>
<td>&nbsp;</td>
<tr>
<td>24 Well Plate</td>
<td>&nbsp;</td>
<td>Falcon</td>
<td>353047</td>
<td>&nbsp;</td>
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<td>60x15 mm Dishes</td>
<td>&nbsp;</td>
<td>VWR</td>
<td>25384-092</td>
<td>&nbsp;</td>
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<td>60x15 Glass Dishes</td>
<td>&nbsp;</td>
<td>VWR</td>
<td>89000-310</td>
<td>&nbsp;</td>
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<td>Paraffin Embedding Wax</td>
<td>&nbsp;</td>
<td>Electron Microscopy Sciences</td>
<td>19304-01</td>
<td>&nbsp;</td>
<tr>
<td>Precision Glide Needles</td>
<td>&nbsp;</td>
<td>BD Biosciences </td>
<td>305165</td>
<td>&nbsp;</td>
<tr>
<td>500 mL Nalgene Filters</td>
<td>&nbsp;</td>
<td>VWR</td>
<td>73520-985</td>
<td>&nbsp;</td>
<tr>
<td>1L Nalgene Filters</td>
<td>&nbsp;</td>
<td>VWR</td>
<td>73520-986</td>
<td>&nbsp;</td>
<tr>
<td>Tissue Forceps</td>
<td>&nbsp;</td>
<td>Fine Science Tools</td>
<td>11023-15</td>
<td>&nbsp;</td>
<tr>
<td>FSC Tweezers #5</td>
<td>&nbsp;</td>
<td>Fine Science Tools</td>
<td>11295-00</td>
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isolation of valvular endothelial cells

Hartkleppen zijn zelf verantwoordelijk voor het handhaven van een richting bloedstroom door het cardiovasculaire systeem. Deze dunne, vezelige weefsels worden blootgesteld aan grote mechanische belastingen als ze te openen en meerdere miljard keer dicht boven een levensduur. De ongelooflijke uithoudingsvermogen van deze weefsels is te wijten aan de bewoner valvulaire endotheel (VEC) en interstitiële cellen (VIC) die constant reparatie en renovatie in reactie op de lokale mechanische en biologische signalen. Pas sinds kort zijn we begonnen met het unieke gedrag van deze cellen, die in vitro experimenten heeft een belangrijke rol gespeeld te begrijpen. Een bijzondere uitdaging is de isolatie en de cultuur van VEC. Speciale zorg moet worden toegepast vanaf het moment dat het weefsel is verwijderd uit de host via finale plating. Hier presenteren wij protocollen voor directe isolatie, side specifieke isolement, cultuur, en verificatie van pure populaties van VEC. We maken gebruik van enzymatische vertering, gevolgd door een zachte doekje scraping techniek om alleen aan de oppervlakte cellen los te maken. Deze cellen worden vervolgens verzameld in een buis en gecentrifugeerd tot een pellet. De pellet wordt vervolgens geresuspendeerd en uitgeplaat in kweekflesjes pre-gecoat met collageen I matrix. VEC fenotype wordt bevestigd door contact remde de groei en de expressie van endotheliale specifieke markers, zoals PECAM1 (CD31), Von Willebrand Factor (vWF), en negatieve expressie van alfa-gladde spiercel actine (α-SMA). De functionele eigenschappen van VEC geassocieerd zijn met hoge niveaus van LDL geacetyleerde. In tegenstelling tot de vasculaire endotheliale cellen, VEC hebben de unieke capaciteit om te zetten in mesenchym, die normaal optreedt tijdens de embryonale klep vorming van een. Dit kan ook optreden tijdens significant verlengd bericht samenvloeiende in vitro cultuur, dus zorg moeten worden geleverd om doorgang op of nabij samenvloeiing. Na het VEC isolatie, kan pure populaties van de VIC dan gemakkelijk worden verkregen.

Watch this Scientific Journal Video about Isolation of Valvular Endothelial Cells at JoVE.com

Isolation of Valvular Endothelial Cells

Wij bieden een methode voor het isoleren en kweken van zuivere populaties van hartklep endotheelcellen (VEC). VEC kan worden geïsoleerd uit beide zijden van de cusp of bijsluiter en onmiddellijk na de onderliggende interstitiële cel (VIC) isolatie is eenvoudig.

Isolatie van Valvulaire endotheelcellen

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