Name: production, characterization and potential uses of a 3d tissue-engineered human esophageal mucosal model
Uploaded: 2015-05-18T14:00:00
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Vi er taknemmelige for Roger Ackroyd, Andrew Wyman og Chris Stoddard, konsulent Kirurger på Sheffield Undervisning Hospitals NHS Foundation Trust, for deres hjælp i at erhverve esophageal vævsprøver og deres støtte til vores arbejde. Vi takker Ashraful Haque for hans hjælp indarbejde tumorcellelinjer i modellen. Vi takker for finansiel støtte til denne undersøgelse af tilskud fra Bardhan Forskning og Uddannelse Trust (BRET) og Yorkshire Cancer Research (YCR).

Humane øsofageale celler opnås fra patienter, der undergår gastrisk eller esophageal kirurgi. Informeret samtykke opnås for det væv, der skal bruges til forskningsformål, og vævet anvendes anonymt under de relevante etiske godkendelser (SSREC 165/03, Human Research Tissue Bank Licence 12179). 1. Isolering af humane Esophageal epitelceller <ol><li> Arbejde i en laminar strømning vævskultur hætte og under anvendelse af steril teknik forberede epitel dyrkningsmedium ved blanding Dulbeccos modificerede E...

<ol>
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Pathol. 205 (4), 468-475 (2005).</li><li>Okawa, 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=The+functional+interplay+between+EGFR+overexpression,+hTERT+activation,+and+p53+mutation+in+esophageal+epithelial+cells+with+activation+of+stromal+fibroblasts+induces+tumor+development,+invasion,+and+differentiation.">The functional interplay between EGFR overexpression, hTERT activation, and p53 mutation in esophageal epithelial cells with activation of stromal fibroblasts induces tumor development, invasion, and differentiation.</a> Genes &amp; Development. 21 (21), 2788-2803 (2007).</li><li>Green, 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=The+development+and+characterization+of+an+organotypic+tissue-engineered+human+esophageal+mucosal+model.">The development and characterization of an organotypic tissue-engineered human esophageal mucosal model.</a> Tissue Eng Part A. 16 (3), 1053-1064 (2010).</li><li>Harada, 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=Telomerase+induces+immortalization+of+human+esophageal+keratinocytes+without+p16INK4a+inactivation.">Telomerase induces immortalization of human esophageal keratinocytes without p16INK4a inactivation.</a> Mol. Cancer Res. 1 (10), 729-738 (2003).</li><li>Bhargava, S., Chapple, C. R., Bullock, A. J., Layton, C., MacNeil, S. <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+buccal+mucosa+for+substitution+urethroplasty.">Tissue-engineered buccal mucosa for substitution urethroplasty.</a> BJU. Int. 93 (6), 807-811 (2004).</li><li>Ralston, D. 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=Keratinocytes+contract+human+dermal+extracellular+matrix+and+reduce+soluble+fibronectin+production+by+fibroblasts+in+a+skin+composite+model.">Keratinocytes contract human dermal extracellular matrix and reduce soluble fibronectin production by fibroblasts in a skin composite model.</a> Br. J. Plast. Surg. 50 (6), 408-415 (1997).</li><li>Green, N. 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=Pulsatile+exposure+to+simulated+reflux+leads+to+changes+in+gene+expression+in+a+3D+model+of+oesophageal+mucosa.">Pulsatile exposure to simulated reflux leads to changes in gene expression in a 3D model of oesophageal mucosa.</a> Int. J. Exp. Pathol. 95 (3), 216-228 (2014).</li><li>Wang, 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=Selective+culture+of+epithelial+cells+from+primary+breast+carcinomas+using+irradiated+3T3+cells+as+feeder+layer.">Selective culture of epithelial cells from primary breast carcinomas using irradiated 3T3 cells as feeder layer.</a> Pathol. Res. Pract. 197 (3), 175-181 (2001).</li><li>Ricardo, R., Phelan, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Trypsinizing+and+subculturing+mammalian+cells.">Trypsinizing and subculturing mammalian cells.</a> J. Vis. Exp. (16), e755 (2008).</li><li>. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Using+a+Hemacytometer+to+Count+Cells.">Using a Hemacytometer to Count Cells.</a> Basic Methods in Cellular and Molecular Biology. , (2014).</li><li>Mahmood, T., Yang, P. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Western+blot:+technique,+theory,+and+trouble+shooting.">Western blot: technique, theory, and trouble shooting.</a> N. Am. J. Med. Sci. 4 (9), 429-434 (2012).</li><li>Streit, S., Michalski, C. W., Erkan, M., Kleeff, J., Friess, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Northern+blot+analysis+for+detection+and+quantification+of+RNA+in+pancreatic+cancer+cells+and+tissues.">Northern blot analysis for detection and quantification of RNA in pancreatic cancer cells and tissues.</a> Nat. Protoc. 4 (1), 37-43 (2009).</li><li>Morgan, 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=Cytometric+bead+array:+a+multiplexed+assay+platform+with+applications+in+various+areas+of+biology.">Cytometric bead array: a multiplexed assay platform with applications in various areas of biology.</a> Clin. Immunol. 110 (3), 252-266 (2004).</li><li>Xu, 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+abnormal+expression+of+retinoic+acid+receptor-beta,+p+53+and+Ki67+protein+in+normal,+premalignant+and+malignant+esophageal+tissues.">The abnormal expression of retinoic acid receptor-beta, p 53 and Ki67 protein in normal, premalignant and malignant esophageal tissues.</a> World J. Gastroenterol. 8 (2), 200-202 (2002).</li><li>Moll, R., Divo, M., Langbein, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+human+keratins:+biology+and+pathology.">The human keratins: biology and pathology.</a> Histochem. Cell Biol. 129 (6), 705-733 (2008).</li><li>Rice, R. H., Green, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Presence+in+human+epidermal+cells+of+a+soluble+protein+precursor+of+the+cross-linked+envelope:+activation+of+the+cross-linking+by+calcium+ions.">Presence in human epidermal cells of a soluble protein precursor of the cross-linked envelope: activation of the cross-linking by calcium ions.</a> Cell. 18 (3), 681-694 (1979).</li><li>Eves, 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=Melanoma+invasion+in+reconstructed+human+skin+is+influenced+by+skin+cells+-+investigation+of+the+role+of+proteolytic+enzymes.">Melanoma invasion in reconstructed human skin is influenced by skin cells - investigation of the role of proteolytic enzymes.</a> Clin. Exp. Metastasis. 20 (8), 685-700 (2003).</li></ol>

Dette manuskript beskriver fremstilling og karakterisering af en biologisk relevant menneskelig esophageal slimhinde model egnet til anvendelse som en eksperimentel platform for at studere virkningen af ​​eksponering for miljømæssige stressfaktorer på esophageal epitel. De mest kritiske trin for vellykket produktion af en human esophageal mucosal model er: at sikre, at størstedelen af ​​de epiteliale celler forbliver proliferative og ikke allerede begyndt at differentiere før s?...

Esophageal mucosa omfatter en stratificeret, pladeepitel over et lag af bindevæv, lamina propria, og er en af ​​de første sider for at støde indtagne miljømæssige stressfaktorer. Udsættelse for diætetiske toksiner er impliceret i udviklingen af ​​esophageal pladecarcinom, mens duodenogastro-esophageal reflux er en kritisk faktor i patogenesen af ​​Barretts Metaplasi, som er forbundet med øget risiko for progression til esophageal adenocarcinom. Esophageal karcinomer er den 8. mest almindelige ondartet svulst i britiske mænd og esophageal adenocarcinom er hastigt stigende i den vestlige verden 1. Desuden har der været en lille forbedring i sygdommen prognose, med en samlet 5-års overlevelse på omkring 15%. Derfor er der behov for eksperimentelle platforme for at undersøge virkningen af ​​eksponering for miljømæssige stressfaktorer på denne esophageal epitel og deres potentielle engagement i udvikpment af metaplasi eller neoplasi. Skønt immortaliserede eller tumorcellelinier tillader forskerne at studere respons af epitelceller til disse stressfaktorer in vitro, forbliver de proliferative og undlader at differentiere til de modne epitelceller findes på de øverste lag af esophageal mucosa. Endvidere kan cellelinier, som allerede gennemgået tumorigenese giver kun begrænset information om de indledende reaktioner af normale celler i epitel miljøfaktorer; og dette er den fase, hvor potentialet for terapeutisk intervention kan være højest. Endelig konventionelle cellekultursystemer undlader at indfange de potentielt vigtige vekselvirkninger mellem epitel- og mesenchymale celler og mellem disse celler og den omgivende matrix, der forekommer inden væv in vivo. Dyremodeller giver et mere realistisk mikromiljø for at studere svarene fra esophageal epithelium og kan optage den kunstige induktion af gastro-øsofageal reflukssygdom 2. Men det kan være mere udfordrende at manipulere de miljømæssige stressfaktorer i disse modeller, og de kan ikke fuldt ud repræsentere svar inden for den menneskelige spiserøret. Andre eksperimentelle humane esophageal modeller er blevet udviklet, som anvender primære celler, udødeliggjorte celler eller tumorcellelinier på et collagen, eller kombineret kollagen / Matrigel, stillads indeholdende fibroblaster 3,4. Det er mindre arbejdskrævende at generere disse scaffolds end acellulær esophageal stillads beskrevet i dette manuskript, og disse organotypiske modeller giver et nyttigt redskab, især i studiet af tumorinvasion 5,6, hvor tumorcelle infiltration i kollagen gel kan let observeret. Men disse kollagengeler har ikke-indfødte mekaniske egenskaber og mangler visse funktioner i det oprindelige væv, herunder en specifik basalmembran og appropriate overflade topografi. Dette kan påvirke adfærden hos celler, hvilket resulterer i, for eksempel, dårligere vedhæftning mellem epitelet og stillads ved brug af en kollagengel stillads 7. Som følge heraf acellulær porcin esophageal stillads blev udviklet, med den fordel, at en mere biologisk realistisk stillads og således mere egnet til anvendelse som en eksperimentel platform. Det har også vist sig, at det er bedre at inkorporere primære celler i esophageal konstruktioner end immortaliserede esophageal epiteliale cellelinjer, såsom Het-1A, da disse celler danner en flerlaget epitel, men undlader at stratificere eller differentiere 4,7,8 . Derfor har denne protokol blevet tilpasset fra en metode, der allerede er i brug i MacNeil laboratoriet for at gøre manipuleret væv hud og mundslimhinden 9,10 og indeholder en de-cellularized porcint esophageal stillads kombineret med primære humane øsofageale epitelceller og fibroblaster. This protokol producerer et modent, stratificeret epitel, svarende til den i det normale humane esophagus som påvist af CK4, CK14, Ki67 og involucrin farvning. Den resulterende model giver en eksperimentel platform til at studere reaktioner på miljømæssige stressfaktorer, og har været brugt effektivt til at undersøge ændringer i genekspression i esophageal epitel svar på refluxate komponenter 11.

<table border="0" cellpadding="0" cellspacing="0">
	<tbody>
		<tr>
			<td>Trypsin</td>
			<td>BD Biosciences</td>
			<td align="right">215240</td>
			<td>Prepare 0.1% w/v solution in PBS and filter sterilise. Warm in 37&#176;C water bath before use</td>
		</tr>
		<tr>
			<td>DMEM</td>
			<td>Labtech</td>
			<td>LM-D1112</td>
			<td>Warm in 37&#176;C water bath before use</td>
		</tr>
		<tr>
			<td>Ham&#39;s F12</td>
			<td>Labtech</td>
			<td>LM-H1236</td>
			<td>Warm in 37&#176;C water bath before use</td>
		</tr>
		<tr>
			<td>Foetal Calf Serum</td>
			<td>Labtech</td>
			<td>FB-1090</td>
			<td></td>
		</tr>
		<tr>
			<td>Epidermal Growth Factor</td>
			<td>R+D Systems</td>
			<td>236-EG-200</td>
			<td>Prepare 200 &#181;g/ml stock solution in 10 mM acetic acid, 1% FCS</td>
		</tr>
		<tr>
			<td>Hydorcortisone</td>
			<td>Sigma-Aldrich</td>
			<td>H0396</td>
			<td>Prepare stock solution in PBS and filter sterilise before use</td>
		</tr>
		<tr>
			<td>Adenine</td>
			<td>Sigma-Aldrich</td>
			<td>A2786</td>
			<td>Prepare stock solution in PBS and filter sterilise before use</td>
		</tr>
		<tr>
			<td>Insulin</td>
			<td>Sigma-Aldrich</td>
			<td>I2767</td>
			<td>Prepare 10 mg/ml solution in 0.01M HCl, dilute 1:10 in distilled water and filter sterilise before use</td>
		</tr>
		<tr>
			<td>Transferrin</td>
			<td>Sigma-Aldrich</td>
			<td>T2036</td>
			<td>Prepare stock solution in distilled water and filter sterilise before use</td>
		</tr>
		<tr>
			<td>Triiodothyronine</td>
			<td>Sigma-Aldrich</td>
			<td>T2752</td>
			<td>Prepare stock solution in distilled water and filter sterilise before use</td>
		</tr>
		<tr>
			<td>Cholera toxin</td>
			<td>Sigma-Aldrich</td>
			<td>C8052</td>
			<td>Prepare stock solution in water</td>
		</tr>
		<tr>
			<td>L-Glutamine</td>
			<td>Sigma-Aldrich</td>
			<td>G7513</td>
			<td></td>
		</tr>
		<tr>
			<td>Penicillin-Streptomycin</td>
			<td>Sigma-Aldrich</td>
			<td>P0781</td>
			<td></td>
		</tr>
		<tr>
			<td>Amphotericin B</td>
			<td>Gibco</td>
			<td>15290-026</td>
			<td>Brand name Fungizone</td>
		</tr>
		<tr>
			<td>PBS</td>
			<td>Oxoid</td>
			<td>BR0014</td>
			<td>Dissolve 1 tablet in 100 ml water and autoclave to sterilise</td>
		</tr>
		<tr>
			<td>Collagenase A</td>
			<td>Roche</td>
			<td align="right">10103578001</td>
			<td></td>
		</tr>
		<tr>
			<td>Povidone-iodine solution</td>
			<td>Ecolab</td>
			<td>10830E</td>
			<td>Brand name Videne</td>
		</tr>
		<tr>
			<td>Ethanol</td>
			<td>Sigma-Aldrich</td>
			<td>E7023</td>
			<td></td>
		</tr>
		<tr>
			<td>NaCl</td>
			<td>Sigma-Aldrich</td>
			<td align="right">433209</td>
			<td>Prepare 1M solution and autoclave to sterilise before use (121 &#730;C for 15 min)</td>
		</tr>
		<tr>
			<td>Glycerol</td>
			<td>Sigma-Aldrich</td>
			<td>G2025</td>
			<td>Autoclave to sterilise before use (121 &#730;C for 15 min)</td>
		</tr>
		<tr>
			<td>Chelex 100</td>
			<td>Sigma-Aldrich</td>
			<td>C7901</td>
			<td></td>
		</tr>
		<tr>
			<td>Newborn calf serum</td>
			<td>Gibco</td>
			<td align="right">26010074</td>
			<td></td>
		</tr>
		<tr>
			<td>Progesterone</td>
			<td>Sigma-Aldrich</td>
			<td>P8783</td>
			<td>Prepare stock solution in DMEM and filter sterilise before use</td>
		</tr>
		<tr>
			<td>Ethanolamine</td>
			<td>Sigma-Aldrich</td>
			<td>E9508</td>
			<td>Prepare stock solution in DMEM and filter sterilise before use</td>
		</tr>
		<tr>
			<td>Hydrocortisone</td>
			<td>Sigma-Aldrich</td>
			<td>H0888</td>
			<td>Prepare stock solution in DMEM and filter sterilise before use use</td>
		</tr>
		<tr>
			<td>O-phosphorylethanolamine</td>
			<td>Sigma-Aldrich</td>
			<td>P0503</td>
			<td>Prepare stock solution in DMEM and filter sterilise before use</td>
		</tr>
		<tr>
			<td>ITS (insulin, transferrin, selenium)</td>
			<td>Lonza</td>
			<td>17-838Z</td>
			<td>Used for composite media preparation</td>
		</tr>
		<tr>
			<td>Trypsin-EDTA</td>
			<td>Sigma-Aldrich</td>
			<td>T3924</td>
			<td>Warm in 37&#176;C water bath before use</td>
		</tr>
		<tr>
			<td>EDTA 0.02% solution</td>
			<td>Sigma-Aldrich</td>
			<td>E8008</td>
			<td>Warm in 37&#176;C water bath before use</td>
		</tr>
		<tr>
			<td>T75 culture flask</td>
			<td>VWR</td>
			<td>734-2313</td>
			<td></td>
		</tr>
		<tr>
			<td>50 ml centrifuge tube</td>
			<td>Fisher</td>
			<td align="right">11819650</td>
			<td></td>
		</tr>
		<tr>
			<td>15 ml universal tube</td>
			<td>SLS</td>
			<td>SLS7504</td>
			<td></td>
		</tr>
		<tr>
			<td>180 ml pot</td>
			<td>VWR</td>
			<td>216-2603</td>
			<td></td>
		</tr>
		<tr>
			<td>Petri dish</td>
			<td>SLS</td>
			<td align="right">150350</td>
			<td></td>
		</tr>
		<tr>
			<td>6 well plate</td>
			<td>VWR</td>
			<td>734-2323</td>
			<td></td>
		</tr>
		<tr>
			<td>stainless steel rings</td>
			<td></td>
			<td></td>
			<td>Manufactured in house - medical grade stainless steel, internal diameter 10 mm, external diameter 20 mm</td>
		</tr>
		<tr>
			<td>steel mesh grids</td>
			<td></td>
			<td></td>
			<td>Manufactured in house - sheets have 0.3 cm diameter holes, bent to produce grid 2cm (w) x2 cm (d) x 0.5 cm (h)</td>
		</tr>
		<tr>
			<td>ki67</td>
			<td>Novocastra</td>
			<td>KI67-MM1-L-CE</td>
			<td>Clone MM1 Use at 1:100</td>
		</tr>
		<tr>
			<td>CK4</td>
			<td>Abcam</td>
			<td>ab9004</td>
			<td>Clone 6B10 Use at 1:200</td>
		</tr>
		<tr>
			<td>CK14</td>
			<td>Novocastra</td>
			<td>LL002-L-CE</td>
			<td>Clone LL002 Use at 1:200</td>
		</tr>
		<tr>
			<td>Involucrin</td>
			<td>Novocastra</td>
			<td>INV</td>
			<td>Clone&#160; SY5 Use at 1:100</td>
		</tr>
		<tr>
			<td>OE21</td>
			<td>Sigma-Aldrich</td>
			<td align="right">96062201</td>
			<td></td>
		</tr>
		<tr>
			<td>OE33</td>
			<td>Sigma-Aldrich</td>
			<td align="right">96070808</td>
			<td></td>
		</tr>
		<tr>
			<td>Het-1A</td>
			<td>ATCC-LGC</td>
			<td>CRL-2692</td>
			<td></td>
		</tr>
		<tr>
			<td>Mouse 3T3 fibroblasts</td>
			<td>ATCC-LGC</td>
			<td>CRL-1658</td>
			<td>previously growth arrested by irradiation (60 Gy)</td>
		</tr>
	</tbody>
</table>

production, characterization and potential uses of a 3d tissue-engineered human esophageal mucosal model

Forekomsten af ​​både esophageal adenocarcinom og dens forløber, Barretts Metaplasi, stiger hurtigt i den vestlige verden. Endvidere esophageal adenocarcinom har generelt en dårlig prognose, med en lille forbedring i overlevelsesrater i de senere år. Det er vanskelige betingelser for at studere, og der har været en mangel på egnede eksperimentelle platforme til at undersøge sygdomme i esophageal slimhinde. En model af den menneskelige esophageal mucosa er blevet udviklet i MacNeil laboratorium, som i modsætning til konventionelle 2D cellekultursystemer, rekapitulerer celle-celle og celle-matrix-interaktioner stede in vivo og danner en moden, stratificeret epitel ligner den normale menneskelige spiserøret. Kort fortalt modellen udnytter ikke-transformerede normale primære humane esophageal fibroblaster og epitelceller dyrket i et porcin-afledt acellulær esophageal stillads. Immunhistokemisk karakterisering af denne modelaf CK4, CK14, Ki67 og involucrin farvning demonstrerer passende sammenfatning af histologi af den normale menneskelige esophageal slimhinde. Denne model giver en robust, biologisk relevant eksperimentel model af den menneskelige esophageal mucosa. Det kan nemt manipuleres til at undersøge en række forskningsspørgsmål, herunder effektiviteten af ​​farmakologiske midler og virkningen af ​​udsættelse for miljøfaktorer såsom alkohol, toksiner, høj temperatur eller mave-esophageal refluxate komponenter. Modellen letter også forlængede kultur perioder ikke opnåelige med konventionel 2D cellekultur, så bl.a. undersøgelsen af virkningen af gentagen eksponering af en moden epitel til agenten af interesse i op til 20 dage. Desuden er en række forskellige cellelinjer, såsom de afledt af esophageal tumorer eller Barretts Metaplasi, kan inkorporeres i modellen til at undersøge processer såsom tumorinvasion og drug responsiveness i en mere biologisk relevant miljø.

Dette håndskrift beskriver processen krævede, vist i skematisk form i figur 1, til kultur 3D-modeller af det menneskelige esophageal epitel med succes. For at bekræfte egnetheden af ​​modellen som en eksperimentel platform histologiske og immunhistokemiske undersøgelser er blevet gennemført sammenligne de dyrkede væv med humant normalt esophageal skællede slimhinde. Histologisk vurdering af epitelet fremstillet ved den beskrevne fremgangsmåde viser en moden, fler...

Watch this Scientific Journal Video about Production, Characterization and Potential Uses of a 3D Tissue-engineered Human Esophageal Mucosal Model at JoVE.com

Production, Characterization and Potential Uses of a 3D Tissue-engineered Human Esophageal Mucosal Model

Dette manuskript beskriver produktion, karakterisering og potentielle anvendelser af et manipuleret væv 3D esophageal konstruktion fremstillet af normal primære humane esophageal fibroblast og pladeepitelceller podet i en de-cellularized porcint stillads. Resultaterne demonstrerer dannelsen af ​​et modent stratificeret epitel ligner den normale menneskelige spiserøret.

Produktion, karakterisering og potentielle anvendelse af en 3D-Tissue-manipuleret humant Esophageal Mucosal Model

The incidence of both esophageal adenocarcinoma and its precursor, Barrett&#8217;s Metaplasia, are rising rapidly in the western world. Furthermore ...

Research

JoVE Journal

Bioengineering

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves

Protokol for Relativ Hydrodynamic Vurdering af Tri-brochure Polymer Valves

Limitations of currently available prosthetic valves, xenografts, and homografts have prompted a recent resurgence of developments in the area of ...

Generation and Grafting of Tissue-engineered Vessels in a Mouse Model

Generation og podning af væv-manipuleret Fartøjer i en musemodel

The construction of vascular conduits is a fundamental strategy for surgical repair of damaged and injured vessels resulting from cardiovascular diseases. ...

A Hormone-responsive 3D Culture Model of the Human Mammary Gland Epithelium

Et hormon-responsiv 3D Kultur Model af menneskelige mælkekirtler epitel

The process of mammary epithelial morphogenesis is influenced by hormones. The study of hormone action on the breast epithelium using 2D cultures is ...

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds

En kombineret 3D manipuleret væv<em&gt; In vitro</em&gt; /<em&gt; I Silico</em&gt; Lunge Tumor Model for Forudsigelse Drug Effektivitet i specifikke mutations baggrunde

In the present study, we combined an in vitro 3D lung tumor model with an in silico model to optimize predictions of drug response based on a specific ...

Development of a Multicellular Three-dimensional Organotypic Model of the Human Intestinal Mucosa Grown Under Microgravity

Udvikling af en flercellet Tre-dimensionel organotypisk Model af menneskelige tarmslimhinden Grown Under Microgravity

Because cells growing in a three-dimensional (3-D) environment have the potential to bridge many gaps of cell cultivation in 2-D environments (e.g., ...

Three-dimensional Tissue Engineered Aligned Astrocyte Networks to Recapitulate Developmental Mechanisms and Facilitate Nervous System Regeneration

Tre-dimensionelle Tissue Engineering justeret Astrocyte netværk for at sammenfatte udviklingsmæssige mekanismer og lette nervesystem regenerering

Neurotrauma and neurodegenerative disease often result in lasting neurological deficits due to the limited capacity of the central nervous system (CNS) to ...

A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects

En ny Tenorrhaphy Suture Teknik med væv manipuleret kollagen Graft at reparere store sene defekter

Surgical management of large tendon defects with tendon grafts is challenging, as there are a finite number of sites where donors can be readily ...

Production of Elastin-like Protein Hydrogels for Encapsulation and Immunostaining of Cells in 3D

Produktionen af Elastin-lignende Protein Hydrogels til indkapsling og immunfarvning af celler i 3D

Two-dimensional (2D) tissue culture techniques have been essential for our understanding of fundamental cell biology. However, traditional 2D tissue ...

Detection of Endotoxin in Nano-formulations Using Limulus Amoebocyte Lysate (LAL) Assays

Detection of Endotoxin in Nano-formulations Using Limulus Amoebocyte Lysate LAL Assays

Påvisning af Endotoxin i Nano-formuleringer bruger Limulus Amoebocyte Lysate (LAL) Assays

When present in pharmaceutical products, a Gram-negative bacterial cell wall component endotoxin (often also called lipopolysaccharide) can cause ...

Seeding and Implantation of a Biosynthetic Tissue-engineered Tracheal Graft in a Mouse Model

Såning og Implantation af en biosyntetiske væv-manipuleret trakeal Graft i en musemodel

Treatment options for congenital or secondary long segment tracheal defects have historically been limited due to an inability to replace functional ...