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

Esta pesquisa foi apoiada pelo Programa Ciência Básica Pesquisa (2013R1A1A2060930) e do Programa do Centro de Investigação Médica (2015R1A5A2009124) através da Fundação Nacional de Pesquisa da Coreia (NRF), financiado pelo Ministério da Ciência, TIC e planejamento futuro. Esta pesquisa também é apoiado por uma subvenção de funcionamento Start-up do Hospital for Sick Children (HK Sung). Nós gostaríamos de agradecer a Laura Barwell e Sarah JS Kim por sua excelente ajuda na edição deste manuscrito e Dr. Andras Nagy para fornecer a linha G4 MESC.

NOTA: Um esquema do protocolo de recolha sérica e CM isento de alimentador é mostrado na Figura 1. 1. Materiais (Preparação de MEFs, Medium, pratos e Soluções) <ol><li> Preparar 500 ml de meio de cultura para os MEFs. Suplemento Meio de Eagle Modificado por Dulbecco (DMEM) com 10% de FBS (qualidade CES), 50 unidades / ml de penicilina, e 50 mg / ml de estreptomicina. </li><li> Isolar MEFs de embriões seguindo um protocolo de rotina estabelecida 13 e mantê-los em meio MEF. </...

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Para a recolha bem sucedida de sérica e MESC-CM sem alimentador, as seguintes sugestões devem ser levados em consideração. O fator mais crítico é usando mESCs passagem precoce para a recolha de MESC-CM. Anteriormente, demonstrou-se que no início passagem MESC-CM tem melhores efeitos anti-envelhecimento em comparação com mESCs passagem final. O número passagem do mESCs tem sido relatada a afectar o seu potencial de desenvolvimento 16 e pluripotência 17. Embora...

O objetivo deste protocolo é recolher rato com células-tronco embrionárias (MESC) meio climatizados, (MESC-CM) a partir de condições de cultura sérica e livre de alimentação e caracterizar suas funções biológicas. Em geral, as células-tronco embrionárias (CES) têm um grande potencial para a medicina regenerativa e terapia celular, devido à sua pluripotência e capacidade de auto-renovação 1-3. No entanto, o transplante de células-tronco directa tem várias limitações, tais como a rejeição imunológica e a formação do tumor 4,5. Portanto, uma abordagem livre de células pode fornecer uma estratégia terapêutica alternativa para a medicina regenerativa e envelhecimento intervenções 6,7. A senescência é visto como um homólogo celular para o envelhecimento dos tecidos e órgãos, caracterizado por um estado permanente de paragem do crescimento, fisiologia celular alterada, e comportamentos. O envelhecimento é o principal fator de risco para doenças prevalentes, incluindo cancro, doenças cardiovasculares, tYpê 2 diabetes e neurodegeneração 8. Uma das características óbvias de envelhecimento é o declínio no potencial regenerativo dos tecidos, que é causada pelo envelhecimento de células-tronco e exaustão 9. Muitos estudos têm demonstrado significativas moléculas farmacológicas, tais como a rapamicina 9, o resveratrol 10, 11 e metformina, e factores sistémicos transmitidas pelo sangue, a saber, GDF11 12, que tem a capacidade de atrasar o envelhecimento de forma consistente e estender a esperança de vida. No presente estudo, MESC-CM foi colhida sem soro camadas (soro fetal bovino, FBS) e alimentação (rato embrionárias fibroblastos, MEFs) para excluir a contaminação de fatores séricos e factores de secreção de MEFs. Estas condições permitidas para uma CM sérica e livre de alimentador que, consequentemente, permitiu a identificação precisa dos fatores de secreção MESC específicas do. Este protocolo proposto é altamente eficiente, de custo relativamente eficaz e fácilpara operar. Esta técnica proporciona perspectivas sobre a caracterização de factores solúveis MESC-derivados que podem mediar um efeito anti-senescência, que pode ser utilizada para o desenvolvimento de uma abordagem terapêutica isento de células segura e potencialmente vantajoso para intervenções para as doenças do envelhecimento-associados e de outros regenerativa tratamentos.

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			<td height="43" style="height:43px;width:64px;">DMEM</td>
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			<td style="width:64px;">20%, ES cell quality</td>
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			<td style="width:64px;">50units/ml penicillin and 50mg/ml strepto</td>
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			<td style="width:64px;">Invitrogen</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>
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			<td style="width:64px;">100units/ml</td>
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			<td height="22" style="height:22px;width:64px;">X-gal&#160;</td>
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			<td style="width:64px;">#B4252</td>
			<td style="width:64px;">1mg/ml</td>
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			<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>
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			<td style="width:64px;">5mM</td>
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			<td height="85" style="height:85px;width:64px;">potassium ferrocyanide&#160;</td>
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			<td height="22" style="height:22px;width:64px;">NaCl&#160;</td>
			<td style="width:64px;">Sigma</td>
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			<td style="width:64px;">150mM</td>
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			<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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			<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>
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		<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.

Originalmente, mESCs são mantidos em um alimentador MEF em meio com FBS a MESC e outros suplementos (Figuras 1A e 2A). CM foi recolhido a partir de mESCs na redução meio de soro, sem uma camada de alimentação, de FBS, ou outros suplementos (Figuras 1B e 2B). Esta condição cultura nos permite coletar específico do MESC meio condicionado sem potencial contaminação pelos fatores do alimentador, FBS, ou outros supl...

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

Este protocolo proporciona um método para a recolha de células estaminais embrionárias de rato (MESC) forma climatizados, (MESC-CM) derivado de soro (soro fetal de bovino, FBS) - e do alimentador (fibroblastos embrionários de ratinho, MEFs) Livres de condições para uma célula abordagem -livre. Pode ser aplicável para o tratamento do envelhecimento e das doenças associadas ao envelhecimento.

Coleção de sérica e sem Alimentador rato-tronco embrionárias Médio condicionado celular para uma abordagem livre de celular

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

Diferenciação Neural of Mouse Células-Tronco Embrionárias em soro livre de cultura em monocamada

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

Biologia do Desenvolvimento

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

Geração de pluripotentes induzidas a partir de células-tronco periférico humano T células usando Sendai Virus em condições livres de Alimentador

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

Gerando CRISPR / Cas9 Mediated monoalélicos Eliminações para estudar a função Enhancer em células-tronco embrionárias de camundongos

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

Derivação sem alimentador de melanócitos a partir de células-tronco pluripotentes humanas

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

Reprogramação do rato embrionárias fibroblastos com Fatores de transcrição para induzir um Programa hegemônicos

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

Estudos de estrutura e função em células-tronco embrionárias de camundongos usando troca de cassete mediada por recombinase

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

Rápida, dirigida a diferenciação de células epiteliais de pigmento Retinal de células-tronco humanas embrionárias ou induzida de Pluripotent

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

Definidos Xeno-free e livre de alimentador condições de cultura para a geração de humanos iPSC-derivado da retina célula modelos

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

Um método estática auto-direcionado para gerar organoides cerebrais a partir de células-tronco embrionárias humanas

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

Diferenciação eficiente de neurônios simpáticos pós-ganglionários usando células-tronco pluripotentes humanas em condições de cultura sem alimentadores e quimicamente definidas

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