Name: collection of serum- and feeder-free mouse embryonic stem cell-conditioned medium for a cell-free approach
Uploaded: 2017-01-08T15:00:00
Description: Watch this Scientific Journal Video about Collection of Serum- and Feeder-free Mouse Embryonic Stem Cell-conditioned Medium for a Cell-free Approach at JoVE.com

Questa ricerca è stata sostenuta dalla scienza Basic Program Research (2013R1A1A2060930) e il Medical Research Programma Center (2015R1A5A2009124) attraverso la Fondazione Nazionale delle Ricerche di Corea (NRF), finanziato dal Ministero della Scienza, ICT, e la pianificazione futura. Questa ricerca è supportata anche da una start-up sovvenzione di funzionamento dalla Hospital for Sick Children (HK Sung). Vorremmo ringraziare Laura e Sarah Barwell JS Kim per la loro eccellente aiuto nella redazione di questo manoscritto e il Dr. Andras Nagy per la fornitura della linea G4 Mesc.

NOTA: Uno schema del sierica- e protocollo di raccolta CM-free alimentatore è mostrato in Figura 1. 1. Materiali (Preparazione del MEF, Medium, piatti, e Solutions) <ol><li> Preparare 500 ml di terreno alla cultura i MEF. Supplemento Modified mezzo di Eagle Dulbecco (DMEM) con 10% FBS (ESC qualità), 50 unità / ml di penicillina, 50 mg / ml di streptomicina. </li><li> Isolare MEF da embrioni a seguito di un protocollo di routine consolidata 13 e mantenerli in media MEF. </li><li> ...

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Per la collezione di successo di di siero e Mesc-CM senza alimentatore, i seguenti suggerimenti dovrebbero essere presi in considerazione. Il fattore più critico è usando mESCs passaggio primi per la raccolta di Mesc-CM. In precedenza, è stato dimostrato che il passaggio anticipato Mesc-CM ha migliori effetti anti-invecchiamento rispetto al mESCs fine del passaggio. Stato segnalato il numero passaggio di mESCs di influenzare il loro potenziale di sviluppo 16 e 17 pluripotenza. <p class="jove...

L&#39;obiettivo di questo protocollo è quello di raccogliere il mouse sulle cellule staminali embrionali (Mesc) medio -conditioned (Mesc-CM) da condizioni di coltura di siero e privo di alimentazione e per caratterizzare le sue funzioni biologiche. In generale, le cellule staminali embrionali (ESC) hanno un grande potenziale per la medicina rigenerativa e terapia cellulare per la loro pluripotenza e la capacità di auto-rinnovamento 1-3. Tuttavia, il trapianto diretto di cellule staminali ha diverse limitazioni, come rigetto immunitario e la formazione del tumore 4,5. Pertanto, un approccio libero-cella può fornire una strategia terapeutica alternativa per la medicina rigenerativa e invecchiamento interventi 6,7. Senescenza è visto come controparte cellulare per l&#39;invecchiamento dei tessuti e organi, caratterizzato da uno stato permanente di arresto della crescita, fisiologia cellulare alterata e comportamenti. L&#39;invecchiamento è il principale fattore di rischio per le malattie prevalenti tra cui il cancro, le malattie cardiovascolari, tipo diabete 2, e neurodegenerazione 8. Una delle caratteristiche evidenti di invecchiamento è la diminuzione del potenziale rigenerativo dei tessuti, che è causato da invecchiamento delle cellule staminali e la stanchezza 9. Molti studi hanno dimostrato significativi molecole farmacologiche, come la rapamicina 9, il resveratrolo 10, e metformina 11, e fattori sistemici per via ematica, cioè GDF11 12, che hanno la capacità di ritardare l&#39;invecchiamento in modo coerente ed estendere durata della vita. Nel presente studio, Mesc-CM è stato raccolto senza siero strati (siero fetale bovino, FBS) e l&#39;alimentatore (fibroblasti embrionali di topo, MEF) per escludere la contaminazione di fattori di siero e fattori di secrezione dal MEF. Queste condizioni consentite per un CM di siero e privo di alimentatore che di conseguenza ha permesso l&#39;identificazione accurata di Mesc-specifici fattori secretoria. Questo protocollo proposto è altamente efficiente, relativamente conveniente e facileoperare. Questa tecnica fornisce intuizioni la caratterizzazione di fattori solubili Mesc-derivati ​​che possono mediare un effetto anti-senescenza, che può essere usato per lo sviluppo di un approccio terapeutico privo di cellule sicuro e potenzialmente vantaggiosa verso interventi per le malattie invecchiamento associate e altre rigenerativa trattamenti.

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			<td height="43" style="height:43px;width:64px;">DMEM</td>
			<td style="width:64px;">Invitrogen</td>
			<td style="width:64px;">#11960-044</td>
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			<td style="width:64px;">20%, ES cell quality</td>
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			<td height="148" rowspan="2" style="height:148px;width:64px;">Penicillin and streptomycin&#160;</td>
			<td rowspan="2" style="width:64px;">Invitrogen</td>
			<td rowspan="2" style="width:64px;">#15140</td>
			<td style="width:64px;">50units/ml penicillin and 50mg/ml strepto</td>
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			<td height="22" style="height:22px;width:64px;">-mycin.</td>
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			<td style="width:64px;">Invitrogen</td>
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			<td style="width:64px;">2mM</td>
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			<td height="106" style="height:106px;width:64px;">Nonessential amino acids (NEAA)&#160;</td>
			<td style="width:64px;">Invitrogen</td>
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			<td style="width:64px;">100uM</td>
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			<td style="width:64px;">100uM</td>
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			<td height="85" style="height:85px;width:64px;">Leukemia inhibitory factor&#160;</td>
			<td style="width:64px;">Millipore</td>
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			<td style="width:64px;">100units/ml</td>
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			<td style="width:64px;">Invitrogen</td>
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			<td height="22" style="height:22px;width:64px;">X-gal&#160;</td>
			<td style="width:64px;">Sigma</td>
			<td style="width:64px;">#B4252</td>
			<td style="width:64px;">1mg/ml</td>
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		<tr height="64">
			<td height="64" style="height:64px;width:64px;">Paraformaldehyde (PFA)</td>
			<td style="width:64px;">Sigma</td>
			<td style="width:64px;">P6148</td>
			<td style="width:64px;">3.70%</td>
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			<td height="64" style="height:64px;width:64px;">Dimethylformamide (DMF)</td>
			<td style="width:64px;">Sigma</td>
			<td style="width:64px;">#D4551</td>
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			<td height="85" style="height:85px;width:64px;">Potassium ferricyanide&#160;</td>
			<td style="width:64px;">Aldrich</td>
			<td style="width:64px;">#455946</td>
			<td style="width:64px;">5mM</td>
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			<td height="85" style="height:85px;width:64px;">potassium ferrocyanide&#160;</td>
			<td style="width:64px;">Aldrich</td>
			<td style="width:64px;">#455989</td>
			<td style="width:64px;">5mM</td>
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			<td height="22" style="height:22px;width:64px;">NaCl&#160;</td>
			<td style="width:64px;">Sigma</td>
			<td style="width:64px;">#S7653</td>
			<td style="width:64px;">150mM</td>
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		<tr height="26">
			<td height="26" style="height:26px;width:64px;">MgCl2&#160;</td>
			<td style="width:64px;">Sigma</td>
			<td style="width:64px;">#M2393</td>
			<td style="width:64px;">2mM</td>
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		<tr height="43">
			<td height="43" style="height:43px;width:64px;">Mytomycin C&#160;</td>
			<td style="width:64px;">Sigma</td>
			<td style="width:64px;">#M4287</td>
			<td style="width:64px;">10ug/ml</td>
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		<tr height="43">
			<td height="43" style="height:43px;width:64px;">Propidium iodide&#160;</td>
			<td style="width:64px;">Sigma</td>
			<td style="width:64px;">#P4170</td>
			<td style="width:64px;">50ug/ml</td>
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		<tr height="43">
			<td height="43" style="height:43px;width:64px;">TRIzol</td>
			<td style="width:64px;">Ambion</td>
			<td style="width:64px;">#15596018</td>
			<td style="width:64px;"></td>
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		<tr height="85">
			<td height="85" style="height:85px;width:64px;">M-MLV reverse transcript-tase</td>
			<td style="width:64px;">Promega</td>
			<td style="width:64px;">#M170B</td>
			<td style="width:64px;"></td>
		</tr>
		<tr height="127">
			<td height="127" style="height:127px;width:64px;">Power SYBR Green PCR master mix&#160;</td>
			<td style="width:64px;">Applied Biosystems</td>
			<td style="width:64px;">#4367659</td>
			<td style="width:64px;"></td>
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		<tr height="106">
			<td height="106" style="height:106px;width:64px;">HDFs, NHDF-Ad-Der-Fibroblast&#160;</td>
			<td style="width:64px;">LONZA</td>
			<td style="width:64px;">#CC-2511</td>
			<td style="width:64px;"></td>
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		<tr height="43">
			<td height="43" style="height:43px;width:64px;">Bottle top filter,&#160;</td>
			<td style="width:64px;">Corning</td>
			<td style="width:64px;">#430513</td>
			<td style="width:64px;">0.2&#956;m</td>
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collection of serum- and feeder-free mouse embryonic stem cell-conditioned medium for a cell-free approach

The capacity of embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) to generate various cell types has opened new avenues in the field of regenerative medicine. However, despite their benefits, the tumorigenic potential of ESCs and iPSCs has long been a barrier for clinical applications. Interestingly, it has been shown that ESCs produce several soluble factors that can promote tissue regeneration and delay cellular aging, suggesting that ESCs and iPSCs can also be utilized as a cell-free intervention method. Therefore, the method for harvesting mouse embryonic stem cell (mESC)-conditioned medium (mESC-CM) with minimal contamination of serum components (fetal bovine serum, FBS) and feeder cells (mouse embryonic fibroblasts, MEFs) has been highly demanded. Here, the present study demonstrates an optimized method for the collection of mESC-CM under serum- and feeder-free conditions and for the characterization of mESC-CM using senescence-associated multiple readouts. This protocol will provide a method to collect pure mESC-specific secretory factors without serum and feeder contamination.

In origine, mESCs sono mantenuti su un alimentatore MEF in media Mesc con FBS e altri integratori (Figure 1A e 2A). CM è stato raccolto da mESCs a ridotto siero media senza uno strato alimentatore, FBS, o altri supplementi (figure 1B e 2B). Questa condizione la cultura ci permette di raccogliere Mesc specifico mezzo condizionato senza potenziale contaminazione da fattori dall&#39;alimentatore, FBS, o altri supplementi. ...

Watch this Scientific Journal Video about Collection of Serum- and Feeder-free Mouse Embryonic Stem Cell-conditioned Medium for a Cell-free Approach at JoVE.com

Collection of Serum- and Feeder-free Mouse Embryonic Stem Cell-conditioned Medium for a Cell-free Approach

Questo protocollo fornisce un metodo per la raccolta di cellule staminali embrionali di topo (Mesc) medio -conditioned (Mesc-CM) derivato dal siero (siero fetale bovino, FBS) - e di alimentazione (fibroblasti embrionali di topo, MEF) Condizioni senza glutine per una cella approccio-free. Può essere applicabile per il trattamento di invecchiamento e malattie associate invecchiamento.

Raccolta di di siero e senza alimentatore staminali embrionali di topo medio-Cell condizionata per un approccio libero-Cell

The capacity of embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) to generate various cell types has opened new avenues in the field ...

Research

JoVE Journal

Developmental Biology

Neural Differentiation of Mouse Embryonic Stem Cells in Serum-free Monolayer Culture

Differenziamento neurale delle cellule staminali embrionali di topo in siero privo monostrato Cultura

The ability to differentiate mouse embryonic stem cells (ESC) to neural progenitors allows the study of the mechanisms controlling neural specification as ...

Ricerca

Biologia dello sviluppo

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

Generazione di pluripotenti indotte cellule staminali da umani periferici T Cellule con Sendai virus in condizioni di libera-Feeder

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

Generating CRISPR/Cas9 Mediated Monoallelic Deletions to Study Enhancer Function in Mouse Embryonic Stem Cells

Generazione CRISPR / Cas9 Mediated monoallelic eliminazioni per studiare la funzione Enhancer nel topo cellule staminali embrionali

Enhancers control cell identity by regulating tissue-specific gene expression in a position and orientation independent manner. These enhancers are often ...

Feeder-free Derivation of Melanocytes from Human Pluripotent Stem Cells

Derivazione senza alimentatore di melanociti da cellule staminali umane pluripotenti

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

Reprogramming Mouse Embryonic Fibroblasts with Transcription Factors to Induce a Hemogenic Program

Riprogrammazione fibroblasti embrionali di topo con fattori di trascrizione per indurre un programma Hemogenic

This protocol details the induction of a hemogenic program in mouse embryonic fibroblasts (MEFs) via overexpression of transcription factors (TFs). We ...

Structure-function Studies in Mouse Embryonic Stem Cells Using Recombinase-mediated Cassette Exchange

Studi struttura-funzione nel topo cellule staminali embrionali Uso ricombinasi mediata Cassette Scambio

Gene engineering in mouse embryos or embryonic stem cells (mESCs) allows for the study of the function of a given protein. Proteins are the workhorses of ...

Rapid, Directed Differentiation of Retinal Pigment Epithelial Cells from Human Embryonic or Induced Pluripotent Stem Cells

Rapida, regia di differenziazione delle cellule epiteliali del pigmento retinico da cellule staminali pluripotenti umane embrionali o indotto

We describe a robust method to direct the differentiation of pluripotent stem cells into retinal pigment epithelial cells (RPE). The purpose of providing ...

Defined Xeno-free and Feeder-free Culture Conditions for the Generation of Human iPSC-derived Retinal Cell Models

Condizioni di coltura privo di alimentatore per i modelli di cellula retinica iPSC-derivato generazione umana e definito privo di Xeno

The production of specialized cells from pluripotent stem cells provides a powerful tool to develop new approaches for regenerative medicine. The use of ...

A Static Self-Directed Method for Generating Brain Organoids from Human Embryonic Stem Cells

Un metodo statico auto-diretto per generare organiidi cerebrali da cellule staminali embrionali umane

Human brain organoids differentiated from embryonic stem cells offer the unique opportunity to study complicated interactions of multiple cell types in a ...

Efficient Differentiation of Postganglionic Sympathetic Neurons using Human Pluripotent Stem Cells under Feeder-free and Chemically Defined Culture Conditions

Differenziazione efficiente dei neuroni simpatici postganglionici utilizzando cellule staminali pluripotenti umane in condizioni di coltura senza alimentatore e definite chimicamente

Human pluripotent stem cells (hPSCs) have become a powerful tool for disease modeling and the study of human embryonic development in vitro. We previously ...