Name: Magneto-reologische elastomeren met micropatroon om veranderingen in de uitlijning van cardiomyocyten te stimuleren (Video) | JoVE Journal
Uploaded: 2025-06-10T12:40:00.000+00:00
Duration: 8 min 10 s
Description: Ontdek hoe magneto-reologische elastomeren met micropatroon de uitlijning van cardiomyocyten stimuleren bij dynamische stijfheidsveranderingen. Deze methode ondersteunt onderzoek naar mechanisch geheugen in hartcellen.

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</ol>

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magneto-reologische elastomeren met micropatroon om veranderingen in de uitlijning van cardiomyocyten te stimuleren

Micropatterned Magneto-Rheological Elastomers to Drive Changes in Cardiomyocyte Alignment

Magneto-reologische elastomeren met micropatroon om veranderingen in de uitlijning van cardiomyocyten te stimuleren

Substrate-associated cues, such as mechanical and topographic, profoundly influence cellular response. However, much of the foundational research employs ...

micropatterned-magneto-rheological-elastomers-to-drive-changes

Research

JoVE Journal

Bioengineering

Bio-engineering

In dit protocol demonstreren we de fabricage van biomimetische hartcelcultuursubstraten gemaakt van twee verschillende polymere materialen met behulp van capillaire krachtlitografie.  De beschreven methoden bieden een schaalbare, kosteneffectieve techniek om de structuur en functie van macroscopische hartweefsels voor in vitro en in vivo toepassingen te ontwerpen.

Capillaire Force Lithografie voor Cardiac Tissue Engineering

De generatie van uitgelijnde myocardiale weefsel is een belangrijke voorwaarde voor het aanpassen van de recente ontwikkelingen in de stamcel biologie om klinisch bruikbare doeleinden. Hierin beschrijven we een microcontact afdrukken benadering voor de nauwkeurige controle van cellulaire vorm en functie. Met behulp van zeer zuivere populaties van embryonale stamcellen afgeleid cardiale voorlopercellen, we dan het genereren van anisotrope functionele myocardium.

Generatie van Aligned Functionele myocardweefsel Door microcontact afdrukken

We presenteren een nieuw polyacrylamide hydrogel, genaamd hydroxy-PAAM, die een directe binding van ECM eiwitten mogelijk maakt met minimale kosten of deskundigheid. De combinatie van hydroxy-PAAM hydrogels met microcontactprinten vergemakkelijkt onafhankelijke controle van de vele signalen van de natuurlijke cel micro-omgeving voor het bestuderen van cellulaire mechanostransduction.

Voorbereiding van Hydroxy-PAAM Hydrogelen voor Ontkoppeling van de Effecten van Mechanotransductie Cues

Dit protocol beschrijft een nieuwe methode om te maken een ruimtelijk gedetailleerde eindige elementen-model van de intracellulaire architectuur van cardiomyocytes van elektronenmicroscopie en confocale microscopie afbeeldingen. De kracht van dit ruimtelijk gedetailleerd model wordt aangetoond door middel van case-studies in calcium signalering en Bioenergetica.

Creëren van een structureel realistische eindige elementen geometrische Model van een Cardiomyocyte te bestuderen van de rol van cellulaire architectuur in Cardiomyocyte systeembiologie

Hier presenteren we een protocol voor de opleiding van de bevolking van een cel met behulp van elektrische en mechanische stimuli emuleren cardiale fysiologie. Deze elektromechanische stimulatie verbetert het cardiomyogenic potentieel van de behandelde cellen en is een veelbelovende strategie voor verdere celtherapie, ziekte modellering en drug screening.

Gelijktijdige elektrische en mechanische stimulatie ter verbetering van de cellen Cardiomyogenic potentieel

Een bioinspired steiger wordt vervaardigd door een zachte fotolithografietechniek met mechanisch robuuste en elektrisch geleidende hydrogels. De micropatroon hydrogels bieden directionele cardiomyocyte cel uitlijning, wat resulteert in een op maat gemaakte richting van actuatie. Flexibele micro-elektroden zijn ook geïntegreerd in het schavot om elektrische controleerbaarheid voor een zelf-actulerend hartweefsel te brengen.

Bioinspired Soft Robot met ingebouwde micro-elektroden

Dit protocol biedt gedetailleerde methoden waarin de fabricage en implementatie van een op magneten gebaseerd naladingstuningplatform voor ontworpen hartweefsels wordt beschreven.

Magnetische aanpassing van nalading in engineered heart tissues

Dit protocol introduceert een lithografievrije micropatroonmethode die eenvoudig en toegankelijk is voor mensen met een beperkte bio-engineeringachtergrond. Deze methode maakt gebruik van aangepaste laser-cut stencils om micropatroon extracellulaire matrix eiwitten in een vorm van belang voor het moduleren van cel morfologieën. De procedure voor micropatterning wordt aangetoond met behulp van geïnduceerde pluripotente stamcel afgeleide cardiomyocyten.

Eenvoudige lithografie-vrije single cell micropatterning met behulp van Laser-Cut Stencils

Het huidige protocol genereert mesh-vormige ontworpen cardiale weefsels met cardiovasculaire cellen afkomstig van menselijke geïnduceerde pluripotente stamcellen om het onderzoek van celimplantatietherapie voor hartziekten mogelijk te maken.

Voorbereiding van mesh-vormige ontworpen cardiale weefsels afgeleid van menselijke iPS cellen voor In Vivo Myocardial Repair

Dit protocol heeft tot doel een nieuwe methodologie te beschrijven om de intrinsieke cardiale vuursnelheid te meten met behulp van micro-elektrode array-registratie van het hele sinoatriale knoopweefsel om pacemaking-defecten bij muizen te identificeren. Farmacologische middelen kunnen ook in deze methode worden geïntroduceerd om hun effecten op intrinsieke pacemaking te bestuderen.

Micro-elektrode array-opname van de vuursnelheid van de sinoatriale knoop om intrinsieke cardiale pacemakingdefecten bij muizen te identificeren

Dit werk presenteert een flexibel protocol voor het gebruik van fluorescerend gelabelde elastomeer contracteerbare oppervlakken (FLECS) -technologie in microwell-formaat voor vereenvoudigde, hands-off kwantificering van contractiele krachten met één cel op basis van gevisualiseerde verplaatsingen van fluorescerende eiwitmicropatronen.

Vereenvoudigde, high-throughput analyse van eencellige contractiliteit met behulp van microgepatterde elastomeren

Ontdek hoe magneto-reologische elastomeren met micropatroon de uitlijning van cardiomyocyten stimuleren bij dynamische stijfheidsveranderingen. Deze methode ondersteunt onderzoek naar mechanisch geheugen in hartcellen.

Magneto-reologische elastomeren met micropatroon om veranderingen in de uitlijning van cardiomyocyten te stimuleren

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