Name: feeder-free derivation of melanocytes from human pluripotent stem cells
Uploaded: 2016-03-03T15:00:00
Description: Watch this Scientific Journal Video about Feeder-free Derivation of Melanocytes from Human Pluripotent Stem Cells at JoVE.com

Dit werk werd ondersteund door een beurs voor melanoom onderzoekers van de Joanna M. Nicolay Foundation en door de National Institutes of Health onder Ruth L. Kirschstein National Research Service Award F31. Dit werk werd verder ondersteund door middel van subsidies uit NYSTEM en de Tri-institutionele stamcel-initiatief (Starr Foundation).

LET OP: De melanocyten protocol hier beschreven werd voor het eerst gedemonstreerd door Mica et al. 1. Voorbereiding van Cultuur Medium, Coated Schotels en onderhoud van hPSCs <ol><li> mediumbereiding Opmerking: Bewaar alle bij 4 ° C in het donker gedurende maximaal 2 weken. Filter alle medium voor sterilisatie. <ol><li> Bereid DMEM / 10% FBS. Meng 885 ml DMEM, 100 ml FBS, 10 ml Pen / Strep en 5 ml L-glutamine. Filter voor sterilisatie. </li><li> Bereid hESC-medium. Meng 800 ml DME...

<ol>
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Voor de succesvolle differentiatie van melanocyten uit hPSCs de volgende suggesties in overweging moeten worden genomen. Allereerst is het noodzakelijk om onder steriele kweekomstandigheden te allen tijde. Daarnaast is aangevangen met pluripotente volledig ongedifferentieerde hPSCs; indien de startpopulatie gedifferentieerde cellen bevat zal de opbrengst steeds dalen als de verontreinigingen niet kunnen worden gericht op melanocyten en kunnen verder verstoren de juiste differentiërende cellen. <p class="jove_conten...

Menselijke pluripotente stamcellen (hPSCs) bieden een platform om de normale differentiatie na te bootsen in een schaalbare manier voor de ziekte modelleren, drug discovery, en cel vervangende therapieën 1-6. Van bijzonder belang, hPSCs openstellen van mogelijkheden voor het bestuderen van moeilijk te isoleren of zeldzame / transient types cel waar de patiënt monsters zijn schaars. Bovendien, geïnduceerde pluripotente stamcellen (iPSCs) onderzoekers in staat om ontwikkeling en ziekte modelleren studeren in een patiënt specifieke manier om unieke mechanismen 1,2,7-11 ontrafelen. De eerder gepubliceerde protocol voor differentiatie van melanocyten uit hPSCs is maximaal 6 weken differentiaties en omvat het kweken van cellen met geconditioneerd medium van L- Wnt3a 12 cellen. Het protocol voor het eerst gepresenteerd door Mica et al., En hier beschreven produceert gepigmenteerde cellen in drie weken en verwijdert de dubbelzinnigheid en inconsistenties in verband met geconditioneerd medium. melanocyten are afgeleid van de neurale kam, een trekkende populatie cellen uniek vertebraten. De neurale gedefinieerd tijdens gastrulatie en vertegenwoordigt een populatie cellen aan de rand van de neurale plaat, grenzend tussen de neurale en niet-neurale ectoderm. Tijdens neurulatie, het zenuwweefsel evolueert van een neurale plaat neurale plooien, die convergeren in de dorsale middellijn waardoor de neurale buis 13,14 vormen. De neurale cellen die voortkomen uit de dakplaat van de neurale buis, tegenover de notochord en een epitheliale naar mesenchymale transitie ondergaan vóór de migratie weg om tot een diverse bevolking van gedifferentieerde cellen te geven. Het lot van de kam cellen op een deel van de anatomische locatie van de dakplaat langs de lichaamsas van het embryo. Neurale cel derivaten omvatten lineages kenmerkend zowel mesoderm (gladde spiercellen, osteoblasten, adipocyten, chondrocyten) en ectoderm (melanocyten, Schwann cells, neuronen) 14. Neurale stamcellen reguleert de transcriptiefactor SOX10 en kan worden geïsoleerd door fluorescentie-geactiveerde celsortering met antilichamen tegen p75 en HNK1. De neurale cellen gedoemd om te worden melanocyten passeren een melanoblast podium en upregulate KIT en MITF (-microphthalmia geassocieerde transcriptiefactor) 6,21 MITF is een meester regulator van melanocyten ontwikkeling en is een transcriptiefactor die verantwoordelijk is voor het besturen van een groot deel van melanocyten ontwikkeling 22- 24. Menselijke melanoblasten migreren naar de basale laag van de epidermis wanneer zij ofwel in het haar of uitstulping omgeven door keratinocyten in de epidermis (pigmentatie vormende eenheden) fungeren als voorlopers van de rijpe, gepigmenteerde melanocyten bevinden. De differentiatie en rijping van melanoblasten in gepigmenteerde melanocyten gebeurt gelijktijdig met de kolonisatie van de haarbol en expressie van het melanine traject (TYRP1, TYR, en OCA2PMEL) 25,26. Het isoleren van menselijke melanocyten en melanoblasten van patiënten is duur, moeilijk en het beperken in kwantiteit. Dit protocol stelt onderzoekers in staat om hPSCs (geïnduceerd of embryonale) in de melanocyten of melanocyt voorlopers differentiëren in een goed gedefinieerde, snelle, reproduceerbare, schaalbare en goedkope methode zonder celsortering. Het protocol werd vroeger gebruikt om de ziekte-specifieke afwijkingen identificeren wanneer differentiëren iPSCs van patiënten met pigmentatie stoornissen.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>Accutase</td>
			<td>Innovative Cell Technologies</td>
			<td>AT104</td>
			<td></td>
		</tr>
		<tr>
			<td>apo human transferrin</td>
			<td>Sigma</td>
			<td>T1147</td>
			<td></td>
		</tr>
		<tr>
			<td>Ascorbic Acid (L-AA)</td>
			<td>Sigma</td>
			<td>A4034</td>
			<td>100 mM</td>
		</tr>
		<tr>
			<td>B27 (B27 Supplement)</td>
			<td>Invitrogen</td>
			<td>17504044</td>
			<td></td>
		</tr>
		<tr>
			<td>&#946;-Mercaptoethanol</td>
			<td>Gibco-Life Technologies</td>
			<td>21985-023</td>
			<td>10 mg/ml</td>
		</tr>
		<tr>
			<td>BMP4</td>
			<td>R&#38;D Systems</td>
			<td>314-bp</td>
			<td></td>
		</tr>
		<tr>
			<td>CHIR99021</td>
			<td>Tocris-R&#38;D Systems</td>
			<td>4423</td>
			<td>6 mM</td>
		</tr>
		<tr>
			<td>Cholera toxin</td>
			<td>Sigma</td>
			<td>C8052</td>
			<td>50 mg/ml</td>
		</tr>
		<tr>
			<td>cAMP (cyclicAMP)</td>
			<td>Sigma</td>
			<td>D0627</td>
			<td>100 mM</td>
		</tr>
		<tr>
			<td>Dexamethasone</td>
			<td>Sigma</td>
			<td>D2915-100MG</td>
			<td>50 &#956;M</td>
		</tr>
		<tr>
			<td>DMEM - Dulbecco&#39;s Modified Eagle Medium</td>
			<td>Gibco-Life Technologies</td>
			<td>11985-092</td>
			<td></td>
		</tr>
		<tr>
			<td>DMEM/F12 - Dulbecco&#39;s Modified Eagle Medium: Nutrient Mixture F-12</td>
			<td>Gibco-Life Technologies</td>
			<td>1133--032</td>
			<td></td>
		</tr>
		<tr>
			<td>DMEM/F12 powder</td>
			<td>Invitrogen</td>
			<td>12500-096</td>
			<td></td>
		</tr>
		<tr>
			<td>EDN3 (Endothelin-3, human)</td>
			<td>American Peptide Company</td>
			<td>88-5-10B</td>
			<td>100 &#956;M</td>
		</tr>
		<tr>
			<td>Fibronectin</td>
			<td>BD Biosciences</td>
			<td>356008</td>
			<td>200 &#956;g/ml</td>
		</tr>
		<tr>
			<td>gelatin (PBS without Mg/Ca)</td>
			<td>in house</td>
			<td></td>
			<td>0.1% in PBS</td>
		</tr>
		<tr>
			<td>Glucose</td>
			<td>Sigma</td>
			<td>G7021</td>
			<td></td>
		</tr>
		<tr>
			<td>Human insulin</td>
			<td>Sigma</td>
			<td>I2643</td>
			<td></td>
		</tr>
		<tr>
			<td>ITS+ Universal Culture Supplement Premix&#160;</td>
			<td>BD Biosciences</td>
			<td>354352</td>
			<td></td>
		</tr>
		<tr>
			<td>KSR (Knockout Serum Replacement)</td>
			<td>Gibco-Life Technologies</td>
			<td>10828-028</td>
			<td></td>
		</tr>
		<tr>
			<td>Knockout DMEM</td>
			<td>Gibco-Life Technologies</td>
			<td>10829-018</td>
			<td></td>
		</tr>
		<tr>
			<td>L-Glutamine</td>
			<td>Gibco-Life Technologies</td>
			<td>25030-081</td>
			<td></td>
		</tr>
		<tr>
			<td>LDN193189</td>
			<td>Stemgent</td>
			<td>04-0074</td>
			<td>100 mM</td>
		</tr>
		<tr>
			<td>Low glucose DMEM</td>
			<td>Invitrogen</td>
			<td>11885-084</td>
			<td></td>
		</tr>
		<tr>
			<td>Matrigel matrix</td>
			<td>BD Biosciences</td>
			<td>354234</td>
			<td>Dissolve 1:20 in DMEM/F12</td>
		</tr>
		<tr>
			<td>MCDB201 Medium</td>
			<td>Sigma</td>
			<td>M6770</td>
			<td></td>
		</tr>
		<tr>
			<td>MEM minimum essential amino acids solution</td>
			<td>Gibco-Life Technologies</td>
			<td>11140-080</td>
			<td></td>
		</tr>
		<tr>
			<td>Mouse embryonic fibroblasts (7 million cells/vial)</td>
			<td>GlobalStem</td>
			<td>GSC-8105M</td>
			<td></td>
		</tr>
		<tr>
			<td>Mouse Laminin-I</td>
			<td>R&#38;D Systems</td>
			<td>3400-010-01</td>
			<td>1 mg/ml</td>
		</tr>
		<tr>
			<td>Neurobasal medium</td>
			<td>Invitrogen</td>
			<td>21103049</td>
			<td></td>
		</tr>
		<tr>
			<td>Penicilin/Streptomycin</td>
			<td>Gibco-Life Technologies</td>
			<td>15140-122</td>
			<td>10,000 U/ml</td>
		</tr>
		<tr>
			<td>Poly-L Omithin hydrobromide</td>
			<td>Sigma</td>
			<td>P3655</td>
			<td>15 mg/ml&#160;</td>
		</tr>
		<tr>
			<td>Progesterone</td>
			<td>Sigma</td>
			<td>P8783</td>
			<td>0.032g in 100ml 100% ethanol</td>
		</tr>
		<tr>
			<td>Putrescine dihydrochloride</td>
			<td>Sigma</td>
			<td>P5780</td>
			<td></td>
		</tr>
		<tr>
			<td>FGF2 (Recombinant human FGF basic)</td>
			<td>R&#38;D Systems</td>
			<td>233-FB-001MG/CF</td>
			<td>10 mg/ml</td>
		</tr>
		<tr>
			<td>SB431542</td>
			<td>Tocris-R&#38;D Systems</td>
			<td>1814</td>
			<td>10 mM</td>
		</tr>
		<tr>
			<td>Selenite</td>
			<td>Sigma</td>
			<td>S5261</td>
			<td></td>
		</tr>
		<tr>
			<td>Sodium Bicarbonate</td>
			<td>Sigma</td>
			<td>S5761</td>
			<td></td>
		</tr>
		<tr>
			<td>SCF (Stem Cell Factor, recombinant Human)&#160;</td>
			<td>Peprotech Inc.</td>
			<td>300-07</td>
			<td>50 &#956;g/ml</td>
		</tr>
		<tr>
			<td>TYRP1 (G-17) Antibody</td>
			<td>Santa Cruz</td>
			<td>10443</td>
			<td>1:200</td>
		</tr>
		<tr>
			<td>TYRP2 Antibody</td>
			<td>Abcam</td>
			<td>74073</td>
			<td>1:200</td>
		</tr>
		<tr>
			<td>Trypsin-EDTA (0.05%)</td>
			<td>Gibco-Life Technologies</td>
			<td>25300-054</td>
			<td></td>
		</tr>
		<tr>
			<td>Y-27632 dihydrochloride</td>
			<td>Tocris-R&#38;D Systems</td>
			<td>1254</td>
			<td>10 mM</td>
		</tr>
	</tbody>
</table>

feeder-free derivation of melanocytes from human pluripotent stem cells

Human pluripotent stem cells (hPSCs) represent a platform to study human development in vitro under both normal and disease conditions. Researchers can direct the differentiation of hPSCs into the cell type of interest by manipulating the culture conditions to recapitulate signals seen during development. One such cell type is the melanocyte, a pigment-producing cell of neural crest (NC) origin responsible for protecting the skin against UV irradiation. This protocol presents an extension of a currently available in vitro Neural Crest differentiation protocol from hPSCs to further differentiate NC into fully pigmented melanocytes. Melanocyte precursors can be enriched from the Neural Crest protocol via a timed exposure to activators of WNT, BMP, and EDN3 signaling under dual-SMAD-inhibition conditions. The resultant melanocyte precursors are then purified and matured into fully pigmented melanocytes by culture in a selective medium. The resultant melanocytes are fully pigmented and stain appropriately for proteins characteristic of mature melanocytes.

Dit protocol verschaft een werkwijze voor het afleiden volledig gepigmenteerde volwassen melanocyten uit hPSCs in een in vitro voedingsvrije, kostenefficiënt en reproduceerbare wijze. In tegenstelling tot de eerder vastgestelde Fang et al. Protocol HPSC-afgeleide melanocyten, heeft de geschetste protocol niet geconditioneerd medium vereist en vermindert de vereiste tijd. Fang et al. Protocol gebruikt geconditioneerd medium van een Wnt3a-producerende cellijn va...

Watch this Scientific Journal Video about Feeder-free Derivation of Melanocytes from Human Pluripotent Stem Cells at JoVE.com

Feeder-free Derivation of Melanocytes from Human Pluripotent Stem Cells

Feeder-vrij Afleiding van melanocyten uit menselijke pluripotente stamcellen

Dit werk beschrijft een in vitro differentiatie protocol bij gepigmenteerde, volwassen melanocyten uit menselijke pluripotente stamcellen te produceren via een neurale en melanoblast tussenstap met behulp van een feeder-vrij, 25 dagen protocol.

Human pluripotent stem cells (hPSCs) represent a platform to study human development in vitro under both normal and disease conditions. Researchers can ...

Research

JoVE Journal

Developmental Biology

Derivation of Cardiac Progenitor Cells from Embryonic Stem Cells

Afleiding van Cardiac stamcellen uit embryonale stamcellen

Cardiac progenitor cells (CPCs) have the capacity to differentiate into cardiomyocytes, smooth muscle cells (SMC), and endothelial cells and hold great ...

Efficient Derivation of Retinal Pigment Epithelium Cells from Stem Cells

Efficiënte Afleiding van retinale pigment epitheel cellen uit stamcellen

No cure has been discovered for age-related macular degeneration  (AMD), the leading cause of vision loss in people over the age of 55. AMD is complex ...

Derivation of Highly Purified Cardiomyocytes from Human Induced Pluripotent Stem Cells Using Small Molecule-modulated Differentiation and Subsequent Glucose Starvation

Afleiding van zeer gezuiverde Cardiomyocyten van Human geïnduceerde pluripotente stamcellen Met behulp van kleine moleculen gemoduleerd Differentiatie en Latere Glucose Verhongering

Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) have become an important cell source to address the lack of primary cardiomyocytes ...

Three-dimensional Quantification of Dendritic Spines from Pyramidal Neurons Derived from Human Induced Pluripotent Stem Cells

Driedimensionale Kwantificering van Dendritische stekels van Piramidale Neuronen afgeleid van menselijk geïnduceerde pluripotente stamcellen

Dendritic spines are small protrusions that correspond to the post-synaptic compartments of excitatory synapses in the central nervous system. They are ...

Generation of Induced Pluripotent Stem Cells from Human Peripheral T Cells Using Sendai Virus in Feeder-free Conditions

Generatie van geïnduceerde pluripotente stamcellen uit menselijke perifere T-cellen met behulp van Sendai Virus in Feeder gratis Voorwaarden

Recently, iPSCs have attracted attention as a new source of cells for regenerative therapies. Although the initial method for generating iPSCs relied on ...

Defined and Scalable Generation of Hepatocyte-like Cells from Human Pluripotent Stem Cells

Gedefinieerd en Scalable Generatie van hepatocyt-achtige cellen uit menselijke pluripotente stamcellen

Human pluripotent stem cells (hPSCs) possess great value for biomedical research. hPSCs can be scaled and differentiated to all cell types found in the ...

Differentiating Chondrocytes from Peripheral Blood-derived Human Induced Pluripotent Stem Cells

Differentiatie van chondrocyten van perifere bloed afgeleide humane geïnduceerde pluripotente stamcellen

In this study, we used peripheral blood cells (PBCs) as seed cells to produce chondrocytes via induced pluripotent stem cells (iPSCs) in an ...

Integration Free Derivation of Human Induced Pluripotent Stem Cells Using Laminin 521 Matrix

Integratie Gratis Derivatie van Menselijk Geïnduceerde Pluripotente Stamcellen Met Laminine 521 Matrix

Xeno-free and fully defined conditions are key parameters for robust and reproducible generation of homogenous human induced pluripotent stem (hiPS) ...

Efficient Differentiation of Human Pluripotent Stem Cells into Liver Cells

Efficiënte differentiatie van menselijke pluripotente stamcellen in levercellen

The liver detoxifies harmful substances, secretes vital proteins, and executes key metabolic activities, thus sustaining life. Consequently, liver ...

In Vitro Generation of Somite Derivatives from Human Induced Pluripotent Stem Cells

In Vitro generatie van Somiet derivaten uit menselijk geïnduceerde pluripotente stamcellen-cellen

In response to signals such as WNTs, bone morphogenetic proteins (BMPs), and sonic hedgehog (SHH) secreted from surrounding tissues, somites (SMs) give ...