Name: a net mold-based method of scaffold-free three-dimensional cardiac tissue creation
Uploaded: 2018-08-05T13:00:00
Description: Watch this Scientific Journal Video about A Net Mold-based Method of Scaffold-free Three-Dimensional Cardiac Tissue Creation at JoVE.com

Gli autori riconoscono la seguente fonte di finanziamento: il fondo di questioni che magia per ricerca cardiovascolare.

1. preparazione dei cardiomiociti
<ol><li>Piastre da 6 pozzetti cappotto con membrana basale matrix e cultura umana indotta cellule staminali pluripotenti (hiPSCs) come precedentemente descritto17.</li>
	<li>Differenziarsi hiPSCs in hiPSC-CMs utilizzando metodi precedentemente descritti18.</li>
	<li>Alla post-differenziazione 16-18 d, sospendere i cardiomiociti risciacquando ogni pozzetto con 2 mL di tampone fosfato salino (PBS): 1x senza calcio o magnesio, seguita da inc...

<ol>
	<li>Gao, L., 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=Myocardial+Tissue+Engineering+With+Cells+Derived+From+Human-Induced+Pluripotent+Stem+Cells+and+a+Native-Like,+High-Resolution,+3-Dimensionally+Printed+Scaffold.">Myocardial Tissue Engineering With Cells Derived From Human-Induced Pluripotent Stem Cells and a Native-Like, High-Resolution, 3-Dimensionally Printed Scaffold.</a> Circulation Research. 120 (8), 1318-1325 (2017).</li><li>Borovjagin, A. V., Ogle, B. M., Berry, J. L., Zhang, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=From+Microscale+Devices+to+3D+Printing:+Advances+in+Fabrication+of+3D+Cardiovascular+Tissues.">From Microscale Devices to 3D Printing: Advances in Fabrication of 3D Cardiovascular Tissues.</a> Circulation Research. 120 (1), 150-165 (2017).</li><li>Tandon, 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=Electrical+stimulation+systems+for+cardiac+tissue+engineering.">Electrical stimulation systems for cardiac tissue engineering.</a> Nature Protocols. 4 (2), 155-173 (2009).</li><li>Duran, A. G., 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=Regenerative+Medicine/Cardiac+Cell+Therapy:+Pluripotent+Stem+Cells.">Regenerative Medicine/Cardiac Cell Therapy: Pluripotent Stem Cells.</a> The Journal of Thoracic and Cardiovascular Surgery. 66 (1), 53-62 (2018).</li><li>Lux, 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=In+vitro+maturation+of+large-scale+cardiac+patches+based+on+a+perfusable+starter+matrix+by+cyclic+mechanical+stimulation.">In vitro maturation of large-scale cardiac patches based on a perfusable starter matrix by cyclic mechanical stimulation.</a> Acta Biomaterialia. 30, 177-187 (2016).</li><li>Eschenhagen, 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=Three-dimensional+reconstitution+of+embryonic+cardiomyocytes+in+a+collagen+matrix:+a+new+heart+muscle+model+system.">Three-dimensional reconstitution of embryonic cardiomyocytes in a collagen matrix: a new heart muscle model system.</a> The FASEB Journal. 11 (8), 683-694 (1997).</li><li>Moldovan, N. I., Hibino, N., Nakayama, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Principles+of+the+Kenzan+Method+for+Robotic+Cell+Spheroid-Based+Three-Dimensional+Bioprinting.">Principles of the Kenzan Method for Robotic Cell Spheroid-Based Three-Dimensional Bioprinting.</a> Tissue Engineering Part B: Reviews. 23 (3), 237-244 (2017).</li><li>Sugiura, T., Hibino, N., Breuer, C. K., Shinoka, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tissue-engineered+cardiac+patch+seeded+with+human+induced+pluripotent+stem+cell+derived+cardiomyocytes+promoted+the+regeneration+of+host+cardiomyocytes+in+a+rat+model.">Tissue-engineered cardiac patch seeded with human induced pluripotent stem cell derived cardiomyocytes promoted the regeneration of host cardiomyocytes in a rat model.</a> Journal of Cardiothoracic Surgery. 11 (1), 163 (2016).</li><li>Caspi, O., 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=Tissue+engineering+of+vascularized+cardiac+muscle+from+human+embryonic+stem+cells.">Tissue engineering of vascularized cardiac muscle from human embryonic stem cells.</a> Circulation Research. 100 (2), 263-272 (2007).</li><li>Ong, C. S., 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=Biomaterial-Free+Three-Dimensional+Bioprinting+of+Cardiac+Tissue+using+Human+Induced+Pluripotent+Stem+Cell+Derived+Cardiomyocytes.">Biomaterial-Free Three-Dimensional Bioprinting of Cardiac Tissue using Human Induced Pluripotent Stem Cell Derived Cardiomyocytes.</a> Scientific Reports. 7 (1), 4566 (2017).</li><li>Kelm, J. 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=A+novel+concept+for+scaffold-free+vessel+tissue+engineering:+self-assembly+of+microtissue+building+blocks.">A novel concept for scaffold-free vessel tissue engineering: self-assembly of microtissue building blocks.</a> Journal of Biotechnology. 148 (1), 46-55 (2010).</li><li>Noguchi, 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=Development+of+a+three-dimensional+pre-vascularized+scaffold-free+contractile+cardiac+patch+for+treating+heart+disease.">Development of a three-dimensional pre-vascularized scaffold-free contractile cardiac patch for treating heart disease.</a> The Journal of Heart and Lung Transplantation. 35 (1), 137-145 (2016).</li><li>Zuppinger, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=3D+culture+for+cardiac+cells.">3D culture for cardiac cells.</a> Biochimica et Biophysica Acta. 1863 (7 Pt B), 1873-1881 (2016).</li><li>Langenbach, F., 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=Generation+and+differentiation+of+microtissues+from+multipotent+precursor+cells+for+use+in+tissue+engineering.">Generation and differentiation of microtissues from multipotent precursor cells for use in tissue engineering.</a> Nature Protocols. 6 (11), 1726-1735 (2011).</li><li>Fennema, E., Rivron, N., Rouwkema, J., van Blitterswijk, C., de Boer, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Spheroid+culture+as+a+tool+for+creating+3D+complex+tissues.">Spheroid culture as a tool for creating 3D complex tissues.</a> Trends in Biotechnology. 31 (2), 108-115 (2013).</li><li>Agocha, A., Sigel, A. V., Eghbali-Webb, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Characterization+of+adult+human+heart+fibroblasts+in+culture:+a+comparative+study+of+growth,+proliferation+and+collagen+production+in+human+and+rabbit+cardiac+fibroblasts+and+their+response+to+transforming+growth+factor-beta1.">Characterization of adult human heart fibroblasts in culture: a comparative study of growth, proliferation and collagen production in human and rabbit cardiac fibroblasts and their response to transforming growth factor-beta1.</a> Cell Tissue Research. 288 (1), 87-93 (1997).</li><li>Baudin, B., Bruneel, A., Bosselut, N., Vaubourdolle, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+protocol+for+isolation+and+culture+of+human+umbilical+vein+endothelial+cells.">A protocol for isolation and culture of human umbilical vein endothelial cells.</a> Nature Protocols. 2 (3), 481-485 (2007).</li><li>Pimentel, C. 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=Three-dimensional+fabrication+of+thick+and+densely+populated+soft+constructs+with+complex+and+actively+perfused+channel+network.">Three-dimensional fabrication of thick and densely populated soft constructs with complex and actively perfused channel network.</a> Acta Biomaterialia. 65, 174-184 (2018).</li><li>Shimizu, 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=Polysurgery+of+cell+sheet+grafts+overcomes+diffusion+limits+to+produce+thick,+vascularized+myocardial+tissues.">Polysurgery of cell sheet grafts overcomes diffusion limits to produce thick, vascularized myocardial tissues.</a> The FASEB Journal. 20 (6), 708-710 (2006).</li><li>Sakaguchi, K., Shimizu, T., Okano, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Construction+of+three-dimensional+vascularized+cardiac+tissue+with+cell+sheet+engineering.">Construction of three-dimensional vascularized cardiac tissue with cell sheet engineering.</a> Journal of Controlled Release. 205, 83-88 (2015).</li><li>Ong, C. S., 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=Creation+of+Cardiac+Tissue+Exhibiting+Mechanical+Integration+of+Spheroids+Using+3D+Bioprinting.">Creation of Cardiac Tissue Exhibiting Mechanical Integration of Spheroids Using 3D Bioprinting.</a> Journal of Visualized Experiments. 125 (e55438), (2017).</li><li>Tan, 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=Cell+number+per+spheroid+and+electrical+conductivity+of+nanowires+influence+the+function+of+silicon+nanowired+human+cardiac+spheroids.">Cell number per spheroid and electrical conductivity of nanowires influence the function of silicon nanowired human cardiac spheroids.</a> Acta Biomaterialia. 51, 495-504 (2017).</li><li>Karra, R., Poss, K. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Redirecting+cardiac+growth+mechanisms+for+therapeutic+regeneration.">Redirecting cardiac growth mechanisms for therapeutic regeneration.</a> Journal of Clinical Investigation. 127 (2), 427-436 (2017).</li><li>Bartholoma, P., 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=Three-dimensional+in+vitro+reaggregates+of+embryonic+cardiomyocytes:+a+potential+model+system+for+monitoring+effects+of+bioactive+agents.">Three-dimensional in vitro reaggregates of embryonic cardiomyocytes: a potential model system for monitoring effects of bioactive agents.</a> Journal of Biomolecular Screening. 10 (8), 814-822 (2005).</li></ol>

Il significato di questo metodo risiede nella sua riproducibilità e l'efficacia del tessuto cardiaco multistrato risultante. Nel campo dell'ingegneria del tessuto cardiaco, uno degli attuali obiettivi è quello di identificare un metodo per costruire palpitante, multistrata e funzionale 3D patch cardiache. Segnaliamo un metodo efficace e riproducibile di creare tessuti cardiaci multistrati di semina diretta manuale di sferoidi composti di cardiomiociti, cellule endoteliali e fibroblasti in un romanzo stampo netto. Lo st...

L'obiettivo di ingegneria del tessuto cardiaco attuale è quello di sviluppare una terapia per sostituire o riparare la struttura e la funzione del tessuto del miocardio danneggiato1. Metodi per creare modelli 3D del tessuto cardiaco che esibiscono le importanti proprietà contrattili ed elettrofisiologiche del tessuto cardiaco nativo sono stati rapidamente in espansione2,3. Una varietà di strategie sono stati esplorati e utilizzati in studi4,5. Questi vanno di metodi dall'uso di specifici idrogeli bioattivi naturali e sintetici, come gelatina, collagene, fibrina e peptidi6, a bio-inchiostro deposizione tecnologie2 e multimateriali tecnologie7.
È stato dimostrato che senza impalcatura metodi possono produrre tessuti paragonabile come metodi basati su biomateriale, senza gli svantaggi di incorporare ponteggi stranieri materiale8. Oren Caspi et al hanno dimostrato che l'incorporazione di vari tipi di cellule consente la generazione di tessuto cardiaco ingegnerizzato umano altamente vascularized9. Mento et al ha sviluppato un metodo di stampa 3D per la creazione di patch cardiaci di sferoidi. Le patch risultante sono composte di cardiomiociti, fibroblasti e cellule endoteliali in un rapporto di 70:15:1510. Sferoidi sono stati indicati per essere efficaci "building blocks" della creazione del tessuto cardiaco senza impalcatura, come essi sono resistenti contro ipossia e possedere sufficiente integrità meccanica per l'impianto11,12. Gli studi precedenti hanno dimostrato parecchi metodi di fabbricazione per la creazione di sferoide, compreso l'uso dell'impiccagione drop metodo, spinner boccette13, di sistemi microfluidici14e antiaderente cultura superfici non rivestite o rivestite con agarosio micro-stampi15. In questo protocollo, usiamo l'impiccagione dispositivo di discesa, che contiene micropori per condensazione centinaia di sferoidi in una sola volta.
Questo studio presenta un romanzo e l'efficiente metodo senza impalcatura per la creazione di tessuto cardiaco, che comprende il seeding manualmente sferoidi in una cavità dello stampo quadrato e incubando il tessuto su un agitatore per maturazione. In condizioni di coltura statica usuale, diffusione dell'ossigeno è limitato agli aspetti esterni del costrutto del tessuto, con conseguente necrosi centrale. Tuttavia, con la muffa netta, tutte le sferoidi seminati nello stampo sono immersi nei media con un costante movimento fluidico, consentendo per la maggiore diffusione di sostanze nutritive e di ossigeno. Inoltre, questo metodo basato su stampo consente la creazione simultanea di patch di tessuto di diverse dimensioni con il minimo sforzo manuale e il tessuto risultante può essere facilmente rimosso dallo stampo. Questo nuovo metodo consente la creazione efficiente e riproducibile di patch cardiache senza impalcatura, multistrata.

<table border="0" cellpadding="0" cellspacing="0" style="width:708px;" width="708">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">Human Cardiac fibroblasts (HCF)</td>
			<td style="width:139px;">Sciencell</td>
			<td style="width:119px;">6310</td>
			<td style="width:220px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">FM-2 Consists of Basal Medium</td>
			<td style="width:139px;">Sciencell</td>
			<td style="width:119px;">2331</td>
			<td style="width:220px;">HCF culture medium</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:231px;">Human umbilical vein endothelial cells (HUVEC)</td>
			<td style="width:139px;">Lonza</td>
			<td style="width:119px;">CC-2935</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">EGM+Bullet Kit&#160;</td>
			<td style="width:139px;">Lonza</td>
			<td style="width:119px;">CC5035</td>
			<td>HUVEC culture medium</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">E8 media&#160;</td>
			<td style="width:139px;">Invitrogen</td>
			<td style="width:119px;">A1517001</td>
			<td>HiPSC culture medium</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">Geltrex&#160;</td>
			<td style="width:139px;">Invitrogen</td>
			<td style="width:119px;">A1413202</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">TrypLE Express Enzyme (1X)</td>
			<td style="width:139px;">Thermo Fisher</td>
			<td style="width:119px;">12604013</td>
			<td>Trypsin and Cell dissociation reagent</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:231px;">RPMI media</td>
			<td style="width:139px;">Invitrogen</td>
			<td style="width:119px;">11875093</td>
			<td style="width:220px;">RPMI media with B-27 supplement is hiPSC-CM culture medium</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:231px;">B-27 supplement (50x)</td>
			<td style="width:139px;">Thermo Fisher</td>
			<td style="width:119px;">17504044</td>
			<td style="width:220px;">RPMI media with B-27 supplement is hiPSC-CM culture medium</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">Trypan Blue Solution, 0.4%</td>
			<td style="width:139px;">Thermo Fisher</td>
			<td style="width:119px;">15250061</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">Novel net mold&#160;</td>
			<td style="width:139px;">TissueByNet Co.,Ltd</td>
			<td style="width:119px;">NM25-1</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">Hanging drop plate</td>
			<td style="width:139px;">Kuraray Co.,Ltd</td>
			<td style="width:119px;">MPc350</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:231px;">6 well plates&#160;</td>
			<td style="width:139px;">Sigma-Aldrich</td>
			<td style="width:119px;">CLS-3516</td>
			<td></td>
		</tr>
	</tbody>
</table>

a net mold-based method of scaffold-free three-dimensional cardiac tissue creation

Questo protocollo descrive un romanzo e facile metodo basato su stampo netto per creare tessuti cardiaci di tridimensionale (3D) senza materiale aggiuntivo impalcatura. Cardiomiociti derivati da cellule staminali pluripotenti indotte dall'uomo (iPSC-CMs), fibroblasti cardiaci umani (HCF) e cellule endoteliali di vena ombelicale umana (HUVECs) sono isolate e utilizzate per generare una sospensione cellulare con 70% iPSC-CMs, HCF 15% e 15% HUVECs. Sono co-coltivate in un sistema di "appendere goccia" attacco ultra-basso, che contiene micropori per condensazione centinaia di sferoidi in una sola volta. Le cellule di aggregazione e spontaneamente formano sferoidi pestaggio dopo 3 giorni di co-coltura. Sferoidi sono raccolte, seminati in una cavità dello stampo novello e coltivate su un agitatore in incubatrice. Sferoidi diventano un tessuto funzionale maturo circa 7 giorni dopo la semina. I tessuti multistrati risultanti è costituito da sferoidi fusi con soddisfacente integrità strutturale e comportamento sincrono pestaggio. Questo nuovo metodo ha un potenziale promettente come un metodo riproducibile ed economico per creare tessuti ingegnerizzati per il trattamento dello scompenso cardiaco in futuro.

Nei nostri esperimenti, abbiamo utilizzato una sospensione cellulare di 70% iPSC-CMs, HCF 15% e 15% HUVECs in RPMI/B-27 media delle cellule ad una concentrazione di 2.475.000 cellule per mL. Dopo aver creato la sospensione cellulare, abbiamo erogato 4 mL di sospensione cellulare in ciascun pozzetto di un bassissimo allegato blocco sistema goccia, come descritto al punto 4.3 del protocollo. L'uso dell'impiccagione goccia sistema ha provocato la formazione spontanea di centinaia di battere ...

Watch this Scientific Journal Video about A Net Mold-based Method of Scaffold-free Three-Dimensional Cardiac Tissue Creation at JoVE.com

A Net Mold-based Method of Scaffold-free Three-Dimensional Cardiac Tissue Creation

Un metodo basato su stampo netto della creazione senza impalcatura tridimensionale del tessuto cardiaco

Questo protocollo descrive un metodo basato su stampo netto per creare tessuti cardiaci senza impalcatura tridimensionale con soddisfacente integrità strutturale e comportamento sincrono pestaggio.

This protocol describes a novel and easy net mold-based method to create three-dimensional (3-D) cardiac tissues without additional scaffold material. ...

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