Name: fabrication of gradient nanopattern by thermal nanoimprinting technique and screening of the response of human endothelial colony-forming cells
Uploaded: 2018-07-01T14:00:00
Description: Watch this Scientific Journal Video about Fabrication of Gradient Nanopattern by Thermal Nanoimprinting Technique and Screening of the Response of Human Endothelial Colony-forming Cells at JoVE.com

Dette arbeidet ble støttet av grunnleggende vitenskap forskningsprogrammet gjennom National Research Foundation av Korea (NRF) finansiert av departementet for utdanning, vitenskap og teknologi (MEST) [NRF-2015R1D1A1A01060397] og Bio- og medisinske teknologiutvikling Programmet for NRF finansiert av departementet for vitenskap, IKT og fremtid planlegger [NRF-2017M3A9C6029563].

Denne studien ble godkjent av institusjonelle anmeldelsen bord på Korea University Anam Hospital (IRB nr. ED170495). Alle prosedyrer ble utført i samsvar med Helsingfors erklæringen og senere kjemikalier.
1. utarbeidelse av aluminium (Al) substrat av Electropolishing
Forsiktig: Electropolishing løsningen er etsende og giftig. Bruk personlig verneutstyr inkludert nitrilhansker, briller og Laboratoriefrakk. Utføre dette trinnet i avtrekksvifte....

<ol>
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W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanotopography-induced+changes+in+focal+adhesions,+cytoskeletal+organization,+and+mechanical+properties+of+human+mesenchymal+stem+cells.">Nanotopography-induced changes in focal adhesions, cytoskeletal organization, and mechanical properties of human mesenchymal stem cells.</a> Biomaterials. 31 (6), 1299-1306 (2010).</li><li>Davis, G. E., Senger, D. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Endothelial+extracellular+matrix.">Endothelial extracellular matrix.</a> Circulation research. 97 (11), 1093-1107 (2005).</li><li>Nakayama, K. H., Surya, V. N., Gole, M., Walker, T. W., Yang, W., Lai, E. S., Ostrowski, M. A., Fuller, G. G., Dunn, A. R., Huang, N. 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M., Geiger, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Physical+state+of+the+extracellular+matrix+regulates+the+structure+and+molecular+composition+of+cell-matrix+adhesions.">Physical state of the extracellular matrix regulates the structure and molecular composition of cell-matrix adhesions.</a> Molecular biology of the cell. 11 (3), 1047-1060 (2000).</li><li>Deanfield, J. E., Halcox, J. P., Rabelink, T. 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J., Oikonomou, A., Hill, E., Bayat, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+and+functional+evaluation+of+biomimetic+silicone+surfaces+with+hierarchical+micro/nano-topographical+features+demonstrates+favourable+in+vitro+foreign+body+response+of+breast-derived+fibroblasts.">Development and functional evaluation of biomimetic silicone surfaces with hierarchical micro/nano-topographical features demonstrates favourable in vitro foreign body response of breast-derived fibroblasts.</a> Biomaterials. 52, 88-102 (2015).</li><li>Seo, H. R., Joo, H. J., Kim, D. H., Cui, L. H., Choi, S. C., Kim, J. H., Cho, S. W., Lee, K. B., Lim, D. 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Fabrikasjon av en AAO ofte lider av defekter som sprekker, irregulær form av porene og brenning. Hovedårsaken til disse feilene kalles en elektrolytisk sammenbrudd, som er sterkt påvirket av typen metall substrater blir eloksert og resistivitet av elektrolytt21. Siden resistivitet av elektrolytt varierer avhengig av sin temperatur, er eliminere varme kontinuerlig fra elektrodene det kritiske punktet for beliggenhet temperaturen på elektrolytten stabil i en slik høy spenning anodiserings tilst...

Sist, responsen av celler av fysisk stimulering av form har vært profilert innen celle engineering1,2,3,4. Derfor har mer oppmerksomhet vært fokusert på tredimensjonale nanostrukturer på cellen vedlegg overflaten5. Det har blitt rapportert at integrin som er overflaten anerkjennelse enheten cellen, overfører fysiske stimulans drevet av mikro-nano strukturer av ECM gjennom mechano-signaltransduksjon6. Denne mekanisk stimulering regulerer celle atferd gjennom kontakt veiledning7 og induserer cellen cytoskjelett omorganisering skifte form, i tillegg til fokal adhesjon og stivhet av celler8.
Menneskelige endoteliale progenitor celler (hEPCs) i kroppen samhandle tett med microenvironment av omkringliggende ECM9. Dette angir at den fysiske tilstanden på ECM fungerer som en viktig parameter for bestemte cellen matrise vedheft komplekse formasjonen som skjæring stress avledet fra blodet flyt10. Det er rapportert at overflaten nanotopography forbedrer i vitro dannelsen av omfattende kapillarrør nettverk av hEPCs11 og at en ECM/bio løselig faktor kombinert systemet lar hEPCs å gjenkjenne dysfunksjonelle underlag og fremmer sår helbredelse12,13. Likevel, forholdet mellom ECM og hEPCs er ikke klart forstått.
Selv om mange forskere forsøkt å avklare forholdet mellom cellen svar og fysiske signaler fra forskjellige underlag14,15,16, disse studiene brukte bare fast størrelsen på en nanostructure eller nanopatterns med uregelmessig arrangementer som har en begrensning å belyse forholdet mellom størrelsen på nanostructure og celle virkemåten. Problemet her er mangel på egnet verktøy for screening mobilnettet svar som kan erstatte eksisterende kjedelig og repeterende tilnærminger for å finne den optimale størrelsen på nanostructure. En enkel teknikk er derfor nødvendig for screening celle reaksjoner på fysiske stimulations uten repetisjon.
Her beskriver vi en metode som brukes i våre tidligere rapporter17,18,19 for å produsere en gradient nanopattern der diameteren på den arrangert nanopillars gradvis øker. Dessuten, beskrevet vi også hvordan å dyrke og analysere atferden til hECFCs på gradient nanopattern plater å bestemme effekten av fysisk stimuli på cellene. En mild anodization, gradvis etsning og anti-stikker lag belegg metoden ble brukt til å dikte opp gradering AAO mold. Ved å vedta en termisk preging litografi teknikk, ble identiske polystyren gradient nanopatterns produsert i en kostnadseffektiv og lettvint måte. Bruke gradient nanopatterns, er det mulig å fastslå hvilke størrelse av nanostructure har stor innvirkning på celle atferd i ett sett av eksperimentet. Vi forventer at denne gradient nanopattern vil være nyttig i å forstå mekanismene som samspillet mellom blod-avledet hECFC eller andre celler og ulike størrelser av nanostrukturer.

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	<tbody>
		<tr>
			<td>Perchloric acid 60%</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>6512-4100</td>
			<td></td>
		</tr>
		<tr>
			<td>Ethyl alcohol, absolute 99.9%</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>4118-4100</td>
			<td></td>
		</tr>
		<tr>
			<td>Phosphoric acid 85%</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>6532-4400</td>
			<td></td>
		</tr>
		<tr>
			<td>Methyl alcohol 99.5%</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>5558-4400</td>
			<td></td>
		</tr>
		<tr>
			<td>Chromium(VI) oxide</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>2558-4400</td>
			<td></td>
		</tr>
		<tr>
			<td>Sulfuric acid 95%</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>7781-4100</td>
			<td></td>
		</tr>
		<tr>
			<td>Hydrogen peroxide 30%</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>4104-4400</td>
			<td></td>
		</tr>
		<tr>
			<td>n-hexane 95%</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>4081-4400</td>
			<td></td>
		</tr>
		<tr>
			<td>Toluene 99.5%</td>
			<td>Daejung Chemicals &#38; Metals</td>
			<td>8541-4400</td>
			<td></td>
		</tr>
		<tr>
			<td>(heptadecafluoro-1,1,2,2,-tetrahydrodecyl)dimethylchlorosilane</td>
			<td>Gelest</td>
			<td>SIH5840.4</td>
			<td>Moisture sensitive</td>
		</tr>
		<tr>
			<td>Methoxynonafluorobutane 99%</td>
			<td>Sigma aldrich</td>
			<td>464309</td>
			<td></td>
		</tr>
		<tr>
			<td>Collagen solution</td>
			<td>Stemcell</td>
			<td>#4902</td>
			<td></td>
		</tr>
		<tr>
			<td>Gelatin</td>
			<td>Sigma aldrich</td>
			<td>G1890</td>
			<td>Protein coating solution</td>
		</tr>
		<tr>
			<td>Ficoll-Paque</td>
			<td>GE Heathcare</td>
			<td>17-1440-03</td>
			<td>Hydrophilic polysaccharide solution</td>
		</tr>
		<tr>
			<td>EGM-2MV</td>
			<td>Lonza</td>
			<td>CC-3202</td>
			<td>Endothelial cell expansion medium</td>
		</tr>
		<tr>
			<td>Penicillin-Streptomycin</td>
			<td>Gibco</td>
			<td>15140-122</td>
			<td></td>
		</tr>
		<tr>
			<td>Phosphate buffered saline</td>
			<td>Gibco</td>
			<td>10010031</td>
			<td></td>
		</tr>
		<tr>
			<td>Fetal bovine serum</td>
			<td>Gibco</td>
			<td>12483-020</td>
			<td></td>
		</tr>
		<tr>
			<td>Paraformaldehyde</td>
			<td>Sigma aldrich</td>
			<td>P6148</td>
			<td></td>
		</tr>
		<tr>
			<td>Glutaraldehyde</td>
			<td>Sigma aldrich</td>
			<td>G5882-100ML</td>
			<td></td>
		</tr>
		<tr>
			<td>Osmium tetroxide</td>
			<td>Sigma aldrich</td>
			<td>201030-1G</td>
			<td></td>
		</tr>
		<tr>
			<td>Hexamethyldisilazane</td>
			<td>Sigma aldrich</td>
			<td>440191</td>
			<td></td>
		</tr>
		<tr>
			<td>Triton X-100</td>
			<td>Sigma aldrich</td>
			<td>X100-100ML</td>
			<td>Octylphenol ethoxylate&#160;</td>
		</tr>
		<tr>
			<td>Goat serum</td>
			<td>Gibco</td>
			<td>26050-088</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-human vinculin primary antibody&#160;</td>
			<td>Sigma aldrich</td>
			<td>V9131</td>
			<td></td>
		</tr>
		<tr>
			<td>F-actin probe</td>
			<td>Molecular Probes</td>
			<td>A12379</td>
			<td>Fluorescence-conjugated phalloidin</td>
		</tr>
		<tr>
			<td>Alexa Fluor 488-conjugated anti-mouse&#160;IgG antibody</td>
			<td>Molecular Probes</td>
			<td>A11001</td>
			<td>Fluorescence-conjugated secondary antibody&#160;</td>
		</tr>
		<tr>
			<td>4&#39;,6-diamidino-2-phenylindole&#160;</td>
			<td>Sigma aldrich</td>
			<td>D9542</td>
			<td></td>
		</tr>
		<tr>
			<td>Mounting medium</td>
			<td>DAKO</td>
			<td>S3023</td>
			<td></td>
		</tr>
		<tr>
			<td>Anti-human vWF primary antibody&#160;</td>
			<td>DAKO</td>
			<td>A0082</td>
			<td></td>
		</tr>
		<tr>
			<td>Anti-human&#160;CD144 primary antibody&#160;</td>
			<td>BD Biosciences</td>
			<td>#555661</td>
			<td></td>
		</tr>
		<tr>
			<td>Eponate 12&#8482; Embedding Kit, with BDMA</td>
			<td>Ted Pella</td>
			<td>18012</td>
			<td>Epoxy resin</td>
		</tr>
		<tr>
			<td>Uranyl Acetate, 25g</td>
			<td>Ted Pella</td>
			<td>19481</td>
			<td></td>
		</tr>
		<tr>
			<td>Lead Citrate, Trihydrate, 10g</td>
			<td>Ted Pella</td>
			<td>19312</td>
			<td></td>
		</tr>
		<tr>
			<td>Ultra pure aluminum plate</td>
			<td>Goodfellow</td>
			<td>26050-088</td>
			<td></td>
		</tr>
		<tr>
			<td>Polystyrene sheet</td>
			<td>Goodfellow</td>
			<td>ST313120</td>
			<td></td>
		</tr>
		<tr>
			<td>8.0&#34; silicon wafer</td>
			<td>Siltron</td>
			<td>29-01024-03</td>
			<td>Single side polished, 725 &#181;m thick</td>
		</tr>
		<tr>
			<td>Vacuum desiccator, 4.4 L</td>
			<td>Kartell</td>
			<td>KA.230</td>
			<td></td>
		</tr>
		<tr>
			<td>Vacuum pump</td>
			<td>Vacuumer</td>
			<td>V3.VOP100</td>
			<td></td>
		</tr>
		<tr>
			<td>Power supply</td>
			<td>Unicorntech</td>
			<td>UDP-3003</td>
			<td></td>
		</tr>
		<tr>
			<td>Magnetic stirrer</td>
			<td>Daihan scientific</td>
			<td>SL.SMS03022</td>
			<td></td>
		</tr>
		<tr>
			<td>Overhead stirrer</td>
			<td>Daihan scientific</td>
			<td>HT120DX</td>
			<td></td>
		</tr>
		<tr>
			<td>Circulator</td>
			<td>Daihan scientific</td>
			<td>WCR-P12</td>
			<td></td>
		</tr>
		<tr>
			<td>Linear moving stage</td>
			<td>Zaber</td>
			<td>A-LSQ300A-E01-KT07</td>
			<td></td>
		</tr>
		<tr>
			<td>Angle bracket, 90 degrees</td>
			<td>Zaber</td>
			<td>AB90M</td>
			<td>Accessory of the linear moving stage</td>
		</tr>
		<tr>
			<td>PMP forcep, 145 mm</td>
			<td>Vitlab</td>
			<td>67995</td>
			<td>Nonmetallic tweezer</td>
		</tr>
		<tr>
			<td>PTFE beaker, 250 mL</td>
			<td>Cowie</td>
			<td>CW007.25</td>
			<td></td>
		</tr>
		<tr>
			<td>Ultrasonic cleaner</td>
			<td>Branson</td>
			<td>B2510MTH</td>
			<td></td>
		</tr>
		<tr>
			<td>PCB cutter</td>
			<td>Hozan Tool Industrial</td>
			<td>K-110</td>
			<td></td>
		</tr>
		<tr>
			<td>Nanoimprint device</td>
			<td>Nanonex</td>
			<td>NX-2000</td>
			<td></td>
		</tr>
		<tr>
			<td>Oxygen plasma generator</td>
			<td>Femto Science</td>
			<td>CUTE</td>
			<td></td>
		</tr>
		<tr>
			<td>Low temperature sterilizer</td>
			<td>Lowtem</td>
			<td>Crystal 50</td>
			<td></td>
		</tr>
		<tr>
			<td>CO2 Incubator</td>
			<td>Panasonic</td>
			<td>MCO-18AC</td>
			<td></td>
		</tr>
		<tr>
			<td>Confoal laser scanning microscope</td>
			<td>Carl Zeiss</td>
			<td>LSM700</td>
			<td></td>
		</tr>
		<tr>
			<td>Scanning electron microscope</td>
			<td>JEOL</td>
			<td>JSM6701</td>
			<td></td>
		</tr>
		<tr>
			<td>Transmission electron microscope</td>
			<td>Hitachi</td>
			<td>H-7500</td>
			<td></td>
		</tr>
	</tbody>
</table>

fabrication of gradient nanopattern by thermal nanoimprinting technique and screening of the response of human endothelial colony-forming cells

Nanotopography finnes i ulike ekstracellulære matriser (ECMs) rundt kroppen og er kjent for viktige forskrifter tiltak på mobilnettet reaksjoner. Det er imidlertid vanskelig å fastslå forholdet mellom størrelsen på en nanostructure og svar av celler på grunn av mangel på skikkelig screening verktøy. Her viser vi utviklingen av reproduserbar og kostnadseffektiv gradient nanopattern plater for manipulering av mobilnettet svar. Bruke anodic aluminiumoksid (AAO) som en master mold, gradient nanopattern plater med nanopillars av økende diameter områder [120-200 nm (GP 120/200), 200-280 nm (GP 200/280) og 280-360 nm (GP 280/360)] ble fabrikkert av en termisk preging teknikk. Disse gradient nanopattern platene ble designet for å etterligne ulike størrelser på nanotopography i ECM og ble brukt til skjerm svarene på menneskelig colony-forming endotelceller (hECFCs). I denne protokollen beskriver vi fremgangsmåte å fabrikere gradient nanopattern plater for cellen engineering, teknikker dyrke hECFCs fra eksterne menneskeblod og dyrking hECFCs på nanopattern plater.

Figur 1 viser SEM bilder av fabrikkerte gradient AAO formene deres type og plassering. Figur 2 viser SEM bilder av gradient nanopattern plater med vanlig-avrundet nanopillars og Figur 3 er kvantifisering data av nanopillar diameter. Tabell 1 viser egenskapene til de ferdige nanopillars.
Figur 4A</st...

Watch this Scientific Journal Video about Fabrication of Gradient Nanopattern by Thermal Nanoimprinting Technique and Screening of the Response of Human Endothelial Colony-forming Cells at JoVE.com

Fabrication of Gradient Nanopattern by Thermal Nanoimprinting Technique and Screening of the Response of Human Endothelial Colony-forming Cells

Her presenterer vi en protokoll for fabrikasjon av gradient nanopattern plater via termisk nanoimprinting og metode for screening svar av menneskelig endoteliale progenitor celler å nanostrukturer. Bruker den beskrevet teknologien, er det mulig å produsere et stillas som kan manipulere celle oppførsel ved fysisk stimuli.

Fabrikasjon av Gradient Nanopattern av termisk Nanoimprinting teknikk og Screening av responsen av menneskelig Colony-forming endotelceller

Nanotopography can be found in various extracellular matrices (ECMs) around the body and is known to have important regulatory actions upon cellular ...

Research

JoVE Journal

Bioengineering

Fabrication of Micro-tissues using Modules of Collagen Gel Containing Cells

This protocol describes the fabrication of a type of micro-tissues called modules.  The module approach generates uniform, scalable and vascularized ...

Human Cartilage Tissue Fabrication Using Three-dimensional Inkjet Printing Technology

Menneskelig bruskvev Fabrication Bruke Tredimensjonal Inkjet Printing Technology

Bioprinting, which is based on thermal inkjet printing, is one of the most attractive enabling technologies in the field of tissue engineering and ...

Polymeric Microneedle Array Fabrication by Photolithography

Polymer Microneedle Array Fabrikasjon av Fotolitografi

This manuscript describes the fabrication of polymeric microneedle (MN) arrays by photolithography. It involves a simple mold-free process by using a ...

Biomembrane Fabrication by the Solvent-assisted Lipid Bilayer (SALB) Method

Biomembrane Fabrication by the Solvent-assisted Lipid Bilayer SALB Method

Biomembranen Fabrication av Løsemiddel assistert lipidbilag (SalB) Metode

In order to mimic cell membranes, the supported lipid bilayer (SLB) is an attractive platform which enables in vitro investigation of membrane-related ...

Fabrication of Decellularized Cartilage-derived Matrix Scaffolds

Fabrikasjon av Decellularized brusk-avledet Matrix stillaser

Osteochondral defects lack sufficient intrinsic repair capacity to regenerate functionally sound bone and cartilage tissue. To this extent, cartilage ...

Standardized and Scalable Assay to Study Perfused 3D Angiogenic Sprouting of iPSC-derived Endothelial Cells In Vitro

Standardisert og skalerbar analyse for å studere Perfusert 3D angiogenic spirende av iPSC-avledet endothelial Cells in vitro

Pre-clinical drug research of vascular diseases requires in vitro models of vasculature that are amendable to high-throughput screening. However, current ...

Applications for Open Source Microplate-Compatible Illumination Panels

Søknader om åpen kilde Mikroplate-kompatibel belysning paneler

Microplates are commonly used in the modern laboratory environment for a wide variety of tasks both in small-scale laboratory benchtop operations as well ...

Growth of Human and Sheep Corneal Endothelial Cell Layers on Biomaterial Membranes

Vekst av menneske- og sauehornhinne endotelcellelag på biomaterialmembraner

Corneal endothelial cell cultures have a tendency to undergo epithelial-to-mesenchymal transition (EMT) after loss of cell-to-cell contact. EMT is ...

Preclinical Cardiac Electrophysiology Assessment by Dual Voltage and Calcium Optical Mapping of Human Organotypic Cardiac Slices

Preklinisk hjertelektrofysiologi vurdering av dual spenning og kalsium optisk kartlegging av humane organotypiske hjerteskiver

Human cardiac slice preparations have recently been developed as a platform for human physiology studies and therapy testing to bridge the gap between ...

Scalable Generation of Mature Cerebellar Organoids from Human Pluripotent Stem Cells and Characterization by Immunostaining

Skalerbar generasjon av modne cerebellar organoider fra humane pluripotente stamceller og karakterisering ved immunstaining

The cerebellum plays a critical role in the maintenance of balance and motor coordination, and a functional defect in different cerebellar neurons can ...