Name: methods for the isolation, culture, and functional characterization of sinoatrial node myocytes from adult mice
Uploaded: 2016-10-23T14:00:00
Description: Watch this Scientific Journal Video about Methods for the Isolation, Culture, and Functional Characterization of Sinoatrial Node Myocytes from Adult Mice at JoVE.com

We thank Dr. Christian Rickert for critical reading of the manuscript. This work was supported by a grant from the National Heart Lung and Blood Institute (R01-HL088427) to CP. EJS was supported by 5T32-AG000279 from the National Institute on Aging. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

Todos os procedimentos com animais foram realizados de acordo com protocolos aprovados pelo Comitê de Cuidado e Uso Institucional Animal da Universidade do Colorado Anschutz Medical Campus. O protocolo padrão abaixo foi optimizada usando macho C57BL 6J / de 2-3 meses de idade. 1. Prepare Stocks e Suprimentos Solução em adiantado de Experimentos NOTA: Consulte a Tabela de Materiais para equipamentos e materiais necessários. <ol><li> Prepare...

<ol>
	<li>Irisawa, H., Noma, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pacemaker+currents+in+mammalian+nodal+cells.">Pacemaker currents in mammalian nodal cells.</a> J Mol Cell Cardiol. 16 (9), 777-781 (1984).</li><li>DiFrancesco, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pacemaker+mechanisms+in+cardiac+tissue.">Pacemaker mechanisms in cardiac tissue.</a> Annu Rev Physiol. 55, 455-472 (1993).</li><li>Mangoni, M., Nargeot, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genesis+and+regulation+of+the+heart+automaticity.">Genesis and regulation of the heart automaticity.</a> Physiol Rev. 88 (3), 919-982 (2008).</li><li>Lakatta, E. G., DiFrancesco, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=What+keeps+us+ticking:+a+funny+current,+a+calcium+clock,+or+both.">What keeps us ticking: a funny current, a calcium clock, or both.</a> J Mol Cell Cardiol. 47 (2), 157-170 (2009).</li><li>Liao, Z., Lockhead, D., Larson, E., Proenza, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Phosphorylation+and+modulation+of+hyperpolarization-activated+HCN4+channels+by+protein+kinase+A+in+the+mouse+sinoatrial+node.">Phosphorylation and modulation of hyperpolarization-activated HCN4 channels by protein kinase A in the mouse sinoatrial node.</a> J Gen Physiol. 136 (3), 247-258 (2010).</li><li>Liao, Z., St Clair, J. R., Larson, E. D., Proenza, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Myristoylated+peptides+potentiate+the+funny+current+(I(f))+in+sinoatrial+myocytes.">Myristoylated peptides potentiate the funny current (I(f)) in sinoatrial myocytes.</a> Channels. 5 (2), 115-119 (2011).</li><li>Larson, E. D., Clair, J. R. S., Sumner, W. A., Bannister, R. A., Proenza, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Depressed+pacemaker+activity+of+sinoatrial+node+myocytes+contributes+to+the+age-dependent+decline+in+maximum+heart+rate.">Depressed pacemaker activity of sinoatrial node myocytes contributes to the age-dependent decline in maximum heart rate.</a> Proc Nat Acad Sci. 110 (44), 18011-18016 (2013).</li><li>St. Clair, J. R., Liao, Z., Larson, E. D., Proenza, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=PKA-independent+activation+of+I(f)+by+cAMP+in+mouse+sinoatrial+myocytes.">PKA-independent activation of I(f) by cAMP in mouse sinoatrial myocytes.</a> Channels. 7 (4), 318-321 (2013).</li><li>St. Clair, J. R., Sharpe, E. J., Proenza, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Culture+and+adenoviral+infection+of+sinoatrial+node+myocytes+from+adult+mice.">Culture and adenoviral infection of sinoatrial node myocytes from adult mice.</a> Am J Physiol Heart Circ Physiol. , (2015).</li><li>Clark, R. B., Mangoni, M. E., Lueger, A., Couette, B., Nargeot, J., Giles, W. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+rapidly+activating+delayed+rectifier+K++current+regulates+pacemaker+activity+in+adult+mouse+sinoatrial+node+cells.">A rapidly activating delayed rectifier K+ current regulates pacemaker activity in adult mouse sinoatrial node cells.</a> Am J Physiol Heart Circ Physiol. 286 (5), H1757-H1766 (2004).</li><li>Mangoni, M., Nargeot, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Properties+of+the+hyperpolarization-activated+current+(I(f))+in+isolated+mouse+sino-atrial+cells.">Properties of the hyperpolarization-activated current (I(f)) in isolated mouse sino-atrial cells.</a> Cardiovasc Res. 52 (1), 51-64 (2001).</li><li>Cho, H. S., Takano, M., Noma, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+electrophysiological+properties+of+spontaneously+beating+pacemaker+cells+isolated+from+mouse+sinoatrial+node.">The electrophysiological properties of spontaneously beating pacemaker cells isolated from mouse sinoatrial node.</a> J Physiol. 550 (Pt 1), 169-180 (2003).</li><li>Rose, R. A., Lomax, A. E., Kondo, C. S., Anand-Srivastava, M. B., Giles, W. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+C-type+natriuretic+peptide+on+ionic+currents+in+mouse+sinoatrial+node:+a+role+for+the+NPR-C+receptor.">Effects of C-type natriuretic peptide on ionic currents in mouse sinoatrial node: a role for the NPR-C receptor.</a> Am J Physiol Heart Circ Physiol. 286 (5), H1970-H1977 (2004).</li><li>Rose, R. A., Kabir, M. G., Backx, P. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Altered+Heart+Rate+and+Sinoatrial+Node+Function+in+Mice+Lacking+the+cAMP+Regulator+Phosphoinositide+3-Kinase-\gamma\.">Altered Heart Rate and Sinoatrial Node Function in Mice Lacking the cAMP Regulator Phosphoinositide 3-Kinase-\gamma\.</a> Circ Res. 101 (12), 1274-1282 (2007).</li><li>Hua, R., Adamczyk, A., Robbins, C., Ray, G., Rose, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Distinct+patterns+of+constitutive+phosphodiesterase+activity+in+mouse+sinoatrial+node+and+atrial+myocardium.">Distinct patterns of constitutive phosphodiesterase activity in mouse sinoatrial node and atrial myocardium.</a> PloS ONE. 7 (10), e47652 (2012).</li><li>Groenke, S., Larson, E. 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=Complete+atrial-specific+knockout+of+sodium-calcium+exchange+eliminates+sinoatrial+node+pacemaker+activity.">Complete atrial-specific knockout of sodium-calcium exchange eliminates sinoatrial node pacemaker activity.</a> PloS ONE. 8 (11), e81633 (2013).</li><li>Torrente, A. G., Zhang, R., 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=Burst+pacemaker+activity+of+the+sinoatrial+node+in+sodium-calcium+exchanger+knockout+mice.">Burst pacemaker activity of the sinoatrial node in sodium-calcium exchanger knockout mice.</a> Proc Nat Acad Sci USA. 112 (31), 9769-9774 (2015).</li><li>Denyer, J. C., Brown, H. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rabbit+sino-atrial+node+cells:+isolation+and+electrophysiological+properties.">Rabbit sino-atrial node cells: isolation and electrophysiological properties.</a> J Physiol. 428 (1), 405-424 (1990).</li><li>Thum, T., Borlak, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Butanedione+monoxime+increases+the+viability+and+yield+of+adult+cardiomyocytes+in+primary+cultures.">Butanedione monoxime increases the viability and yield of adult cardiomyocytes in primary cultures.</a> Cardiovasc Toxicol. 1 (1), 61-72 (2001).</li><li>Borlak, J., Zwadlo, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+myosin+ATPase+inhibitor+2,3-butanedione+monoxime+dictates+transcriptional+activation+of+ion+channels+and+Ca(2+)-handling+proteins.">The myosin ATPase inhibitor 2,3-butanedione monoxime dictates transcriptional activation of ion channels and Ca(2+)-handling proteins.</a> Molec Pharmacol. 66 (3), 708-717 (2004).</li></ol>

Este artigo apresenta protocolos detalhados para o isolamento e cultura de totalmente diferenciadas miócitos nó sinusal de ratos adultos. O protocolo de isolamento produz de forma confiável SAMs rato espontaneamente activos adequados para qualquer análise eletrofisiológica imediato ou cultura subsequente. Protocolos semelhantes foram relatados por muitos outros grupos (por exemplo, ver referências 11,12,10,13-17). No entanto, o nosso protocolo para a manutenção do rato adulto in vitro SAM pre...

miócitos marcapasso no nó sinusal do coração (miócitos sinoatrial, &quot;SAMs&quot;) geram, potenciais espontâneos rítmicas ação (APs) que se propagam através do miocárdio para iniciar a cada batimento cardíaco. Experiências utilizando SAM agudamente isolados a partir de muitas espécies têm sido essenciais para a elucidação dos mecanismos que contribuem para a geração da actividade de pacemaker. SAMs são cardiomiócitos altamente especializados que diferem substancialmente dos seus homólogos na atrial e ventricular miocárdio em termos de morfologia, função e expressão da proteína. A marca da APs espontâneos em SAMs é uma despolarização espontânea durante a diástole que impulsiona o potencial de membrana até o limiar para acionar o próximo AP 1,2. Este &quot;potencial pacemaker&quot; depende da actividade coordenada de muitas correntes diferentes de membrana, incluindo o &quot;engraçado corrente&quot; (I), F e G-T- tipo correntes de cálcio, e o permutador de sódio-cálcio CurrEnt (I NCX), que é accionado por libertação de Ca2 + a partir do retículo sarcoplasmático 3,4. Enquanto intensamente isolado rato SAMs são uma preparação experimental essencial para o estudo da pacemaking, o isolamento de SAMs de camundongos pode ser um método desafiador para adotar, porque a anatomia indistinta e pequeno tamanho do SAN do mouse requer um microdissection diferenciada ea enzimática combinados e mecânica dissociação das células requer optimização cuidada. Apresentamos aqui uma demonstração de vídeo detalhada de um protocolo que foi usado com sucesso para isolar SAM a partir de murganhos adultos por gravações patch clamp 5-8. Para nosso conhecimento, não existe tal demonstração visual disponível a partir de qualquer outra fonte. Além disso, um novo método é demonstrado em que SAM isolado a partir de ratinhos adultos podem ser mantidas in vitro durante vários dias, permitindo assim a introdução de proteínas, codificado geneticamentemoléculas repórter ou ARNi via infecção adenoviral 9.

<table border="0" cellpadding="0" cellspacing="0" width="649">
	<tbody>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Sylgruard/Elastomer Kit</td>
			<td style="width:167px;">Dow Corning</td>
			<td colspan="2" style="width:237px;">184 SIL ELAST KIT 0.5KG</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Borosilicate 9&#34; pasteur pipettes</td>
			<td style="width:167px;">Fisher Scientific</td>
			<td>13-678-20C</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:247px;">Small, round bottomed culture tubes</td>
			<td style="width:167px;">Fisher Scientific</td>
			<td style="width:175px;">352059</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:247px;">Large, round bottomed culture tubes</td>
			<td style="width:167px;">Corning</td>
			<td style="width:175px;">14-959-11B</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:247px;">Elastase</td>
			<td style="width:167px;">Worthington Biochemical</td>
			<td style="width:175px;">LS002279</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Liberase TM</td>
			<td style="width:167px;">Roche</td>
			<td style="width:175px;">5401119001</td>
			<td>&#160;Tissue dissociation solution</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:247px;">Heparin</td>
			<td style="width:167px;">SAGENT Pharmaceuticals&#160;</td>
			<td style="width:175px;">NDC 25021-400-10</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Mouse Laminin</td>
			<td style="width:167px;">Corning</td>
			<td style="width:175px;">CB-354232</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">12 mm round glass coverslips</td>
			<td style="width:167px;">Fisher&#160;</td>
			<td style="width:175px;">12-545-80</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">24-well culture plate</td>
			<td style="width:167px;">Fisher</td>
			<td style="width:175px;">08-772-1</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Ad-mCherry</td>
			<td style="width:167px;">Vector Biolabs</td>
			<td style="width:175px;">1767</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Ad-eGFP</td>
			<td style="width:167px;">Vector Biolabs</td>
			<td style="width:175px;">1060</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:247px;">Plastic, disposable transfer pipette</td>
			<td style="width:167px;">Fisher Scientific</td>
			<td style="width:175px;"></td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Micro scissors</td>
			<td style="width:167px;">Fisher Scientific</td>
			<td style="width:175px;">17-467-496</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Dumont #4 Forceps</td>
			<td style="width:167px;">Roboz Instruments</td>
			<td style="width:175px;">RS-4904</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Tissue Forceps</td>
			<td style="width:167px;">Roboz Instruments</td>
			<td style="width:175px;">RS-8164</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Dissecting Iris Scissors</td>
			<td style="width:167px;">WPI, Inc.</td>
			<td style="width:175px;">501264</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Dissecting Pins</td>
			<td style="width:167px;">Fine Science Tools</td>
			<td style="width:175px;">26002-20</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">NaCl</td>
			<td>Sigma</td>
			<td>71376</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">KCl</td>
			<td>Sigma</td>
			<td>60128</td>
			<td></td>
		</tr>
		<tr height="26">
			<td height="26" style="height:26px;">KH2PO4</td>
			<td>Sigma</td>
			<td>60353</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">HEPES</td>
			<td>Sigma</td>
			<td>54457</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">glucose</td>
			<td>Sigma</td>
			<td>G0350500</td>
			<td></td>
		</tr>
		<tr height="18">
			<td height="18" style="height:19px;">MgCl2</td>
			<td>Sigma</td>
			<td>M8266</td>
			<td></td>
		</tr>
		<tr height="26">
			<td height="26" style="height:26px;">CaCl2</td>
			<td>Sigma</td>
			<td>C1016</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">taurine</td>
			<td>Sigma</td>
			<td>T0625</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">BSA</td>
			<td>Sigma</td>
			<td>A2153</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">K-glutamate</td>
			<td>Sigma</td>
			<td>G1501</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">K-aspartate</td>
			<td>Sigma</td>
			<td>A6558</td>
			<td></td>
		</tr>
		<tr height="26">
			<td height="26" style="height:26px;">MgSO4</td>
			<td>Sigma</td>
			<td>M7506</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">creatine</td>
			<td>Sigma</td>
			<td>C0780</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">EGTA</td>
			<td>Sigma</td>
			<td>E3889</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Mg-ATP</td>
			<td>Sigma</td>
			<td>A9187</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Amphotericin-B</td>
			<td style="width:167px;">Fisher Scientific</td>
			<td style="width:175px;">1397-89-3</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Isoproterenol</td>
			<td style="width:167px;">Calbiochem</td>
			<td style="width:175px;">420355</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Media199</td>
			<td>Sigma</td>
			<td style="width:175px;">M4530</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:247px;">2,3-butanedione monoxime (BDM)</td>
			<td>Sigma</td>
			<td style="width:175px;">B0753</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Fetal Bovine Serum (FBS)</td>
			<td>Sigma</td>
			<td style="width:175px;">SH30071</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Bovine Serum Albumin (BSA)</td>
			<td>Sigma</td>
			<td style="width:175px;">A5611</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Insulin&#160;&#160;</td>
			<td>Sigma</td>
			<td style="width:175px;">I3146</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Transferrin</td>
			<td>Sigma</td>
			<td style="width:175px;">I3146</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:247px;">Selenium</td>
			<td>Sigma</td>
			<td style="width:175px;">I3146</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Penicillin</td>
			<td>GE Healthcare</td>
			<td style="width:175px;">SV30010</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Streptomycin</td>
			<td>Hyclone</td>
			<td style="width:175px;">SV30010</td>
			<td></td>
		</tr>
	</tbody>
</table>

methods for the isolation, culture, and functional characterization of sinoatrial node myocytes from adult mice

miócitos nó sinusal (SAMs) atuam como os pacemakers naturais do coração, iniciando cada coração bater através da geração de potenciais de ação espontâneos (APs). Estes APs marcapasso refletem a atividade coordenada de numerosas correntes de membrana e ciclismo de cálcio intracelular. No entanto, os mecanismos precisos que impulsionam a atividade pacemaker espontânea em SAMs ainda imperceptíveis. Agudamente SAMs isolados são uma preparação essencial para experimentos para dissecar a base molecular da pacemaking cardíaca. No entanto, a anatomia indistinta, microdissection complexa, e as condições de digestão enzimática mimado ter evitado o uso difundido de forma aguda isolada SAMs. Além disso, os métodos não estavam disponíveis até recentemente para permitir a cultura de longo prazo de SAM para estudos de expressão proteica. Aqui nós fornecemos um passo-a-passo do protocolo e demonstração de vídeo para o isolamento de SAM a partir de ratinhos adultos. Um método também é demonstrada pela manutenção do rato adulto SAM in vitro e para Expressino de proteínas exógenas via infecção por adenovírus. Agudamente isolados e cultivados SAM preparados através destes métodos são adequados para uma variedade de estudos electrofisiológicos e de imagem.

Os protocolos descritos aqui foram anteriormente empregues para isolar SAM espontaneamente activa a partir de ratinhos adultos que são adequadas para uma variedade de diferentes estudos de patch braçadeira 5-8. Além disso, os protocolos para permitir SAM isoladas que podem ser mantidas em cultura durante até uma semana. A transferência de genes para as células em cultura pode ser realizada através de infecção adenoviral 9. Os resultados apresentados nesta s...

Watch this Scientific Journal Video about Methods for the Isolation, Culture, and Functional Characterization of Sinoatrial Node Myocytes from Adult Mice at JoVE.com

Methods for the Isolation, Culture, and Functional Characterization of Sinoatrial Node Myocytes from Adult Mice

Métodos são demonstradas para o isolamento de miócitos do nó sinoatrial (SAM) a partir de ratinhos adultos por patch-clamp electrofisiologia ou imagiologia estudos. As células isoladas podem ser utilizadas directamente ou podem ser mantidas em cultura que permita a expressão de proteínas de interesse, tais como repórteres geneticamente codificados.

Métodos para o isolamento, Cultura e caracterização funcional de SINOATRIAL Nó miócitos de ratos adultos

Sinoatrial node myocytes (SAMs) act as the natural pacemakers of the heart, initiating each heart beat by generating spontaneous action potentials (APs). ...

Research

JoVE Journal

Biology

Primary Culture of Adult Rat Heart Myocytes

Cultura primária de Miócitos Coração Adulto Rat

Cultured primary adult rodent heart cells are an important model system for cardiovascular research.  Nevertheless, establishment of robust, viable ...

Biologia

Isolation and Genetic Manipulation of Adult Cardiac Myocytes for Confocal Imaging

Isolamento e manipulação genética de adultos miócitos cardíacos for Imaging Confocal

Cardiac myocytes isolated from adult hearts are widely accepted as a model somewhere half way between embryonic and neonatal muscle cells on one side and ...

Isolation and Culture of Pulmonary Endothelial Cells from Neonatal Mice

Isolamento e cultura de células endoteliais pulmonares de camundongos Neonatal

Endothelial cells provide a useful research model in many areas of vascular biology. Since its first isolation 1, human umbilical vein endothelial cells ...

Isolation and Culture of Adult Epithelial Stem Cells from Human Skin

Isolamento e Cultura de Células-Tronco Adultas epitelial da pele humana

The homeostasis of all self-renewing tissues is dependent on adult stem cells. As undifferentiated stem cells undergo asymmetric divisions, they generate ...

Isolation and Culture of Individual Myofibers and their Satellite Cells from Adult Skeletal Muscle

Isolamento e Cultura de miofibras individuais e suas células satélites do músculo esquelético

Muscle  regeneration in the adult is performed by resident stem cells called satellite  cells. Satellite cells are defined by  their position between the ...

Isolation, Culture, and Functional Characterization of Adult Mouse Cardiomyoctyes

Isolamento, cultura e caracterização funcional de rato adulto Cardiomyoctyes

The use of primary cardiomyocytes (CMs) in culture has provided a powerful complement to murine models of heart disease in advancing our understanding of ...

Isolation and Culture of Dental Epithelial Stem Cells from the Adult Mouse Incisor

Isolamento e Cultura da Dental epiteliais células-tronco do Adulto Rato Incisivo

Understanding the cellular and molecular mechanisms that underlie tooth regeneration and renewal has become a topic of great interest1-4, and the mouse ...

Isolation and Culture of Primary Mouse Keratinocytes from Neonatal and Adult Mouse Skin

Isolamento e Cultura de Queratinócitos de Rato Primário de Pele de Rato Neonatal e Adulto

The keratinocyte (KC) is the predominant cell type in the epidermis, the outermost layer of the skin. Epidermal KCs play a critical role in providing skin ...

Isolation, Characterization, and Differentiation of Cardiac Stem Cells from the Adult Mouse Heart

Isolamento, caracterização e diferenciação de células-tronco cardíacas do coração de rato adulto

Myocardial infarction (MI) is a leading cause of morbidity and mortality around the world. A major goal of regenerative medicine is to replenish the dead ...

Isolation of Myoepithelial Cells from Adult Murine Lacrimal and Submandibular Glands

Isolamento de células mioepiteliais das glândulas lacrimal e submandibular de Murina adulta

The lacrimal gland (LG) is an exocrine tubuloacinar gland that secretes an aqueous layer of tear film. The LG epithelial tree is comprised of acinar, ...