Name: procedure for decellularization of rat livers in an oscillating-pressure perfusion device
Uploaded: 2015-08-10T13:00:00
Description: Watch this Scientific Journal Video about Procedure for Decellularization of Rat Livers in an Oscillating-pressure Perfusion Device at JoVE.com

The authors would like to gratefully thank Steffen Lippert, Khalid Aliyev, Korinna J&#246;hrens and Katharina Struecker for their help during this project.

Os animais foram mantidos no Centro de Medicina Experimental (FEM, Charité, de Berlim, Alemanha), e todos os protocolos experimentais foram revistos e aprovados pela Secretaria de Estado da Saúde e Assuntos Locais (LAGeSo, Berlim, Alemanha; Reg. No. 0365 O / 11). Colheita 1. Fígado <ol><li> Preparação pré-cirúrgica <ol><li> Use uma placa de cortiça para fixação. Coloque uma cortina médico sobre a placa. Usando quatro agulhas, fixar uma máscara de inalação na placa de cortiça...

<ol>
	<li>Struecker, B., Raschzok, N., Sauer, I. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Liver+support+strategies:+cutting-edge+technologies.">Liver support strategies: cutting-edge technologies.</a> Nat Rev Gastroenterol Hepatol. 11, 166-176 (2014).</li><li>Crapo, P. M., Gilbert, T. W., Badylak, S. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+overview+of+tissue+and+whole+organ+decellularization+processes.">An overview of tissue and whole organ decellularization processes.</a> Biomaterials. 32, 3233-3243 (2011).</li><li>Wang, X., 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=Decellularized+liver+scaffolds+effectively+support+the+proliferation+and+differentiation+of+mouse+fetal+hepatic+progenitors.">Decellularized liver scaffolds effectively support the proliferation and differentiation of mouse fetal hepatic progenitors.</a> J Biomed Mater Res A. , (2013).</li><li>Uygun, B. E., 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=Organ+reengineering+through+development+of+a+transplantable+recellularized+liver+graft+using+decellularized+liver+matrix.">Organ reengineering through development of a transplantable recellularized liver graft using decellularized liver matrix.</a> Nat Med. 16, 814-820 (2010).</li><li>Shupe, T., Williams, M., Brown, A., Willenberg, B., Petersen, B. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Method+for+the+decellularization+of+intact+rat+liver.">Method for the decellularization of intact rat liver.</a> Organogenesis. 6, 134-136 (2010).</li><li>Bao, J., 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=Construction+of+a+portal+implantable+functional+tissue-engineered+liver+using+perfusion-decellularized+matrix+and+hepatocytes+in+rats.">Construction of a portal implantable functional tissue-engineered liver using perfusion-decellularized matrix and hepatocytes in rats.</a> Cell transplantation. 20, 753-766 (2011).</li><li>Baptista, P. 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=The+use+of+whole+organ+decellularization+for+the+generation+of+a+vascularized+liver+organoid.">The use of whole organ decellularization for the generation of a vascularized liver organoid.</a> Hepatology. 53, 604-617 (2011).</li><li>Soto-Gutierrez, A., Wertheim, J. A., Ott, H. C., Gilbert, T. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Perspectives+on+whole-organ+assembly:+moving+toward+transplantation+on+demand.">Perspectives on whole-organ assembly: moving toward transplantation on demand.</a> J Clin Invest. 122, 3817-3823 (2012).</li><li>Soto-Gutierrez, A., 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+whole-organ+regenerative+medicine+approach+for+liver+replacement.">A whole-organ regenerative medicine approach for liver replacement.</a> Tissue engineering. Part C, Methods. 17, 677-686 (2011).</li><li>De Kock, J., 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=Simple+and+quick+method+for+whole-liver+decellularization:+a+novel+in+vitro+three-dimensional+bioengineering+tool.">Simple and quick method for whole-liver decellularization: a novel in vitro three-dimensional bioengineering tool.</a> Archives of toxicology. 85, 607-612 (2011).</li><li>Park, K. M., Woo, H. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Systemic+decellularization+for+multi-organ+scaffolds+in+rats.">Systemic decellularization for multi-organ scaffolds in rats.</a> Transplantation proceedings. 44, 1151-1154 (2012).</li><li>Shirakigawa, N., Ijima, H., Takei, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Decellularized+liver+as+a+practical+scaffold+with+a+vascular+network+template+for+liver+tissue+engineering.">Decellularized liver as a practical scaffold with a vascular network template for liver tissue engineering.</a> J Biosci Bioeng. , (2012).</li><li>Ren, H., 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=Evaluation+of+two+decellularization+methods+in+the+development+of+a+whole-organ+decellularized+rat+liver+scaffold.">Evaluation of two decellularization methods in the development of a whole-organ decellularized rat liver scaffold.</a> Liver Int. 33, 448-458 (2013).</li><li>Struecker, B., 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=Improved+rat+liver+decellularization+by+arterial+perfusion+under+oscillating+pressure+conditions.">Improved rat liver decellularization by arterial perfusion under oscillating pressure conditions.</a> J Tissue Eng Regen Med. , (2014).</li><li>Struecker, B., 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=Porcine+Liver+Decellularization+Under+Oscillating+Pressure+Conditions:+A+Technical+Refinement+to+Improve+the+Homogeneity+of+the+Decellularization+Process.">Porcine Liver Decellularization Under Oscillating Pressure Conditions: A Technical Refinement to Improve the Homogeneity of the Decellularization Process.</a> Tissue engineering. Part C, Methods. , (2014).</li></ol>

Embora a técnica apresentada para a colheita de fígado de rato e descelularização é facilmente reprodutível, existem certos passos críticos a serem considerados: Durante a preparação para a colheita do fígado, é importante para evitar o sangramento grave, porque ele vai activar a coagulação do sangue e podem conduzir à formação de coágulos sanguíneos dentro do fígado. Em nossa opinião, é vantajoso entalhar a aorta abdominal directamente antes da canulação da veia porta...

Descelularização e recelularização pode permitir a geração de órgãos funcionais, transplantáveis ​​in vitro 1. Ao remover as células e material antigénico (por exemplo., ADN, epítopos alfa-Gal) de um órgão, a matriz extracelular ou menos não-imunogénico (ECM) pode ser obtido. Esta matriz conserva a microanatomy tridimensional de um órgão e podem servir como a biomatriz ideal para o repovoamento com células de uma origem diferente, possivelmente xenogénico 2. Assim, uma matriz de fígado de rato descelularizado poderia ser repovoada com células de fígado humano. Este micro-fígado humanizado poderia servir como um modelo ex vivo para a pesquisa sobre doenças (por exemplo., Doenças metabólicas, doenças virais inatos ou neoplasias) ou para testes pré-clínicos farmacêutica 3. Vários protocolos diferentes para perfusão de fígado de rato decellularization já foram publicados 4-13. Em todos os protocolos, decellularção foi conseguida por perfusão de detergentes iónicos ou não-iónicos alcalinas através da veia portal canulada. Para o melhor de nosso conhecimento, fomos o primeiro grupo a relatar rato decellularization fígado por perfusão seletiva através da veia portal e / ou o rato artéria hepática 14. Activar a perfusão selectiva dos diferentes sistemas vasculares no fígado pode permitir melhores resultados decelularização e, além disso, podem desempenhar um papel importante no repovoamento celular. No estudo detalhado aqui, fígados foram perfundidos em um dispositivo de perfusão proprietária feitos sob medida, permitindo a perfusão sob condições de pressão oscilantes. Estas condições de pressão imitar a perfusão fisiológica respiratória dependente do fígado: in situ, o fígado paira sob a cópula do diafragma, cujo movimento durante a respiração tem um impacto direto sobre a perfusão hepática. Inspiração conduz especificamente a redução do diafragma e apertando do fígado, optimizandosaída hepato-venoso, enquanto que leva a expiração do fígado elevação e abaixamento da pressão intra-abdominal para optimizar o fluxo venoso portal-15. O nosso objectivo foi avaliar se a condições de pressão oscilante tem um impacto sobre a homogeneidade de fígado de rato descelularização perfusão intra-abdominais, imitando as condições ex vivo. A homogeneidade do processo de descelularização pode ser um fator subestimado na perfusão descelularização. Todos os agentes conhecidos utilizado para a descelularização fígado provocam alterações nas ECM. Células em áreas mal perfundidos permanecer dentro da ECM, ao passo que outras áreas já estão completamente descelularizados. Para se dissolver as células restantes, a duração ou a pressão de perfusão deve ser elevada, fazendo com que mais alterações às áreas bem perfundidos. Assim, detergentes para a descelularização deve ser distribuído de forma homogénea dentro do órgão.

<table border="0" cellpadding="0" cellspacing="0">
	<tbody>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>Self built arterial cannula</td>
		</tr>
		<tr>
			<td>&#160;Portex Non Sterile Polyethene Tubing</td>
			<td>SIMS Portex</td>
			<td>REF 800/110/100</td>
			<td>0,28mm ID 0,61mm OD</td>
		</tr>
		<tr>
			<td>&#160;Portex Non Sterile Polyethene Tubing</td>
			<td>SIMS Portex</td>
			<td>REF 800/110/200</td>
			<td>0,58mm ID 0,96m OD</td>
		</tr>
		<tr>
			<td>Venodrop Safe butterfly catheter</td>
			<td>Fresenius Kabi</td>
			<td>3275851</td>
			<td>21 G</td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>portal vein cannula</td>
		</tr>
		<tr>
			<td>Periphereal Venous Catheter</td>
			<td>BD</td>
			<td>393224</td>
			<td>BD Venflon Pro 20G</td>
		</tr>
		<tr>
			<td>three-way stopcock</td>
			<td>smiths medical</td>
			<td>888-101RE</td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>surgery</td>
		</tr>
		<tr>
			<td>Cotton Sticks</td>
			<td>Hecht-Assistent</td>
			<td>4302</td>
			<td></td>
		</tr>
		<tr>
			<td>Cotton Pads&#160;</td>
			<td>Shaoxing Zhengde Surgical dressing</td>
			<td>13H118-03</td>
			<td></td>
		</tr>
		<tr>
			<td>Gauze Bandage</td>
			<td>Hubei Haige&#160; Medical Instruments</td>
			<td>14388</td>
			<td></td>
		</tr>
		<tr>
			<td>&#160;Ringer Solution</td>
			<td>Fresenius Kabi</td>
			<td>13 HKP022</td>
			<td>1000ml</td>
		</tr>
		<tr>
			<td>10ml Syringe</td>
			<td>Braun</td>
			<td>4606108V</td>
			<td>10ml/ Luer Solo</td>
		</tr>
		<tr>
			<td>5ml Syringe</td>
			<td>Braun</td>
			<td>4606061V</td>
			<td>5ml /Luer Solo</td>
		</tr>
		<tr>
			<td>Suture (Silk 6/0)</td>
			<td>Resorba</td>
			<td>H1F</td>
			<td>LOT 105001.81</td>
		</tr>
		<tr>
			<td>medical drape</td>
			<td>Shaoxing Zhengde Surgical dressing</td>
			<td>D0613011</td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>surgical instruments</td>
		</tr>
		<tr>
			<td>needle holder</td>
			<td>Geuder</td>
			<td>17570</td>
			<td></td>
		</tr>
		<tr>
			<td>micro-forceps</td>
			<td>Inox-Electronic</td>
			<td>91150-20</td>
			<td></td>
		</tr>
		<tr>
			<td>micro-scissors</td>
			<td>Martin</td>
			<td>11-740-11</td>
			<td></td>
		</tr>
		<tr>
			<td>micro-forceps</td>
			<td>S&#38;T&#160;</td>
			<td>112314</td>
			<td></td>
		</tr>
		<tr>
			<td>Clamp</td>
			<td>Aesculap</td>
			<td>BH111R</td>
			<td></td>
		</tr>
		<tr>
			<td>scissors</td>
			<td>F S T&#160;</td>
			<td>14501-14</td>
			<td></td>
		</tr>
		<tr>
			<td>surgical forceps</td>
			<td>Aesculap</td>
			<td>BD 557</td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>Decellularisation</td>
		</tr>
		<tr>
			<td>Respirator</td>
			<td>Resmed</td>
			<td>14.24.11.0004</td>
			<td>SmartAIR ST</td>
		</tr>
		<tr>
			<td>Perfusion Device</td>
			<td>Charite, medical engineering laboratory</td>
			<td>custome-made device</td>
			<td>decellularisation device</td>
		</tr>
		<tr>
			<td>peristaltic pump ismatec reglo ICC</td>
			<td>IDEX</td>
			<td>ISM4408&#160;</td>
			<td>4-channel</td>
		</tr>
		<tr>
			<td>heidelberger extension 75 cm&#160;</td>
			<td>Fresenius Kabi</td>
			<td>2873</td>
			<td>75 cm</td>
		</tr>
		<tr>
			<td>MS/CA pump-segment</td>
			<td>IDEX</td>
			<td>IS 3510&#160;</td>
			<td>MS/CA/click&#39;n&#39;go/POM-C</td>
		</tr>
		<tr>
			<td>CA 2-stopper tube</td>
			<td>Pharmed</td>
			<td>BPT NSF-51</td>
			<td></td>
		</tr>
		<tr>
			<td>bubble trap&#160;</td>
			<td></td>
			<td>custome-made item</td>
			<td></td>
		</tr>
		<tr>
			<td>Luer Lock hose connector</td>
			<td>Neolab</td>
			<td>No. 02-1887</td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>Detergents</td>
		</tr>
		<tr>
			<td>SDS pellets</td>
			<td>Carl Roth&#160;</td>
			<td>CN30.4&#160;</td>
			<td>2,5 kg</td>
		</tr>
		<tr>
			<td>Triton X-100</td>
			<td>Carl Roth&#160;</td>
			<td>3051.1&#160;</td>
			<td>10l</td>
		</tr>
		<tr>
			<td>PBS&#160;</td>
			<td>Gibco</td>
			<td>14190-094</td>
			<td>DPBS</td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>staining</td>
		</tr>
		<tr>
			<td>Eosin 1%</td>
			<td>Morphisto</td>
			<td>10177</td>
			<td></td>
		</tr>
		<tr>
			<td>Mayer hematoxylin</td>
			<td>AppliChem</td>
			<td>A4840</td>
			<td></td>
		</tr>
		<tr>
			<td>gomori staining</td>
			<td>Morphisto</td>
			<td>11104</td>
			<td></td>
		</tr>
		<tr>
			<td>AlcainBlue-PAS staining</td>
			<td>Morphisto</td>
			<td>11388</td>
			<td></td>
		</tr>
		<tr>
			<td>Direct Red 80&#160;</td>
			<td>Sigma Aldrich</td>
			<td>365548</td>
			<td></td>
		</tr>
	</tbody>
</table>

procedure for decellularization of rat livers in an oscillating-pressure perfusion device

Decellularization and recellularization of parenchymal organs may enable the generation of functional organs in vitro, and several protocols for rodent liver decellularization have already been published. We aimed to improve the decellularization process by construction of a proprietary perfusion device enabling selective perfusion via the portal vein and/or the hepatic artery. Furthermore, we sought to perform perfusion under oscillating surrounding pressure conditions to improve the homogeneity of decellularization. The homogeneity of perfusion decellularization has been an underestimated factor to date. During decellularization, areas within the organ that are poorly perfused may still contain cells, whereas the extracellular matrix (ECM) in well-perfused areas may already be affected by alkaline detergents. Oscillating pressure changes can mimic the intraabdominal pressure changes that occur during respiration to optimize microperfusion inside the liver. In the study presented here, decellularized rat liver matrices were analyzed by histological staining, DNA content analysis and corrosion casting. Perfusion via the hepatic artery showed more homogenous results than portal venous perfusion did. The application of oscillating pressure conditions improved the effectiveness of perfusion decellularization. Livers perfused via the hepatic artery and under oscillating pressure conditions showed the best results. The presented techniques for liver harvesting, cannulation and perfusion using our proprietary device enable sophisticated perfusion set-ups to improve decellularization and recellularization experiments in rat livers.

A homogeneidade e, assim, a eficácia de diferentes protocolos de decelularização foram avaliadas por observação macroscópica, análise histológica e análise do conteúdo de ADN permanecendo dentro do fígado descelularizados matrizes. Além disso, a carcaça corrosão foi realizada para visualizar a microanatomia intacta de fígados após a descelularização. Macroscopia Durante decellularization, fígados tornar Lucent, indicando a remoção de conteúd...

Watch this Scientific Journal Video about Procedure for Decellularization of Rat Livers in an Oscillating-pressure Perfusion Device at JoVE.com

Procedure for Decellularization of Rat Livers in an Oscillating-pressure Perfusion Device

The presented techniques for liver harvesting, cannulation and perfusion using our proprietary device enable sophisticated perfusion set-ups to improve decellularization and recellularization experiments in rat livers.

Procedimento para Decelularização de fígados de rato em uma Perfusão dispositivo oscilante pressão

Decellularization and recellularization of parenchymal organs may enable the generation of functional organs in vitro, and several protocols for rodent ...

Research

JoVE Journal

Bioengineering

Decellularization and Recellularization of Whole Livers

Decelularização e Recellularization de Fígados inteiros

The liver is a complex organ which requires constant perfusion for delivery of nutrients and oxygen and removal of waste in order to survive1. Efforts to ...

Bioengenharia

Microfluidic Device for Recreating a Tumor Microenvironment in Vitro

Microfluidic Device for Recreating a Tumor Microenvironment in Vitro

Dispositivo microfluídicos para Recriando um microambiente do tumor<em&gt; In Vitro</em

We have developed a microfluidic device that mimics the delivery and systemic clearance of drugs to heterogeneous three-dimensional tumor tissues in ...

Procedure for Decellularization of Porcine Heart by Retrograde Coronary Perfusion

Procedimento para decelularização do Coração Suínos por perfusão coronariana retrógrada

Perfusion-based  whole organ decellularization has recently gained interest in the field of  tissue engineering as a means to create site-specific ...

Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens

Reconstruções anatômicas do sistema venoso cardíaco humano usando contraste Tomografia computadorizada de Amostras de perfusão-fixados

A detailed  understanding of the complexity and relative variability within the human  cardiac venous system is crucial for the development of cardiac ...

An Ultrasonic Tool for Nerve Conduction Block in Diabetic Rat Models

Um instrumento ultra-sônico para condução nervosa bloquear em modelos de ratos diabéticos

Nerve conduction block with a high intensity-focused ultrasound (HIFU) transducer has been performed in normal and diabetic animal models recently. HIFU ...

Development of an Electrochemical DNA Biosensor to Detect a Foodborne Pathogen

Desenvolvimento de um Biosensor eletroquímico do DNA para detectar um patógeno de origem alimentar

Vibrio parahaemolyticus (V. parahaemolyticus) is a common foodborne pathogen that contributes to a large proportion of public health problems globally, ...

Two Methods for Decellularization of Plant Tissues for Tissue Engineering Applications

Dois métodos para Decellularization de tecidos vegetais para aplicações de engenharia de tecidos

The autologous, synthetic, and animal-derived grafts currently used as scaffolds for tissue replacement have limitations due to low availability, poor ...

Decellularization and Recellularization Methodology for Human Saphenous Veins

Decellularization e Recellularization metodologia para as veias safena humanas

Vascular conduits used during most vascular surgeries are allogeneic or synthetic grafts that often lead to complications caused by immunosuppression and ...

A Novel Surgical Technique As a Foundation for In Vivo Partial Liver Engineering in Rat

A Novel Surgical Technique As a Foundation for In Vivo Partial Liver Engineering in Rat

Uma nova técnica cirúrgica como fundamento na Vivo parcial engenharia fígado de rato

Organ engineering is a novel strategy to generate liver organ substitutes that can potentially be used in transplantation. Recently, in vivo liver ...

Decellularization of Whole Human Heart Inside a Pressurized Pouch in an Inverted Orientation

Decellularization do coração humana dentro de uma bolsa pressurizada em uma orientação invertida

The ultimate solution for patients with end-stage heart failure is organ transplant. But donor hearts are limited, immunosuppression is required, and ...