Name: progenitor-derived oligodendrocyte culture system from human fetal brain
Uploaded: 2012-12-20T11:00:00
Description: Watch this Scientific Journal Video about Progenitor-derived Oligodendrocyte Culture System from Human Fetal Brain at JoVE.com

Esta pesquisa foi apoiada pelo Programa de Pesquisa intramuros no National Institutes of Health, NINDS. Os autores gostariam de agradecer a todos os membros do Laboratório de Medicina Molecular e Neurociência, Rick Dreyfuss para ajudar com microscopia e peneiramento Pamela C. para ajudar com a edição.

Nota: Para a cultura de rotina de células progenitoras neurais e células da linhagem oligodendrocytic, a incubação é realizada a 37 ° C em 5% de CO 2 humidificado atmosfera. Cada 2 dias, o meio é substituído com 50 a 100% de meio fresco se a cultura é de 40-70% confluentes. No momento da confluência perto, as culturas são passadas a 2-2.5e6/T75 frasco geralmente num plano semanal. 1. Preparando o balão revestido <ol><li> Para preparar frascos revesti...

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Este protocolo descreve como para derivar a partir de oligodendrócitos fetais humanas primárias células progenitoras neuronais e caracterizar o fenótipo de citometria de fluxo utilizando ambos e coloração por imunofluorescência. A expansão eo crescimento de células progenitoras neurais de SNC fetal foi muito bem descrito 1-4. No entanto, a obtenção de oligodendrócitos humanos suficientes para experimentação in vitro continua a ser difícil, embora seja possível identificar e i...

<table border="1"><tbody><tr><td> Nome do reagente </td><td> Companhia </td><td> Número de catálogo </td><td> Concentração final </td></tr><tr><td> DME / PRESUNTOS F12 01:01 </td><td> Omega Cientista </td><td> DM-251 </td><td> 1X </td></tr><tr><td> Bovine Albumin </td><td> Sigma </td><td> A9418 </td><td> 1% </td></tr><tr><td> Gentamicina </td><td> Qualidade Biologicals </td><td> 120-098-031 </td><td> 50 ug / ml </td></tr><tr><td> L-Glutamina </td><td> Qualidade Biologicals </td><td> 118-084-061 </td><td> 2 mM </td></tr><tr><td> T3 </td><td> Sigma </td><td> T2877 </td><td> 3 nM </td></tr><tr><td> Componentes N2 </td><td> Gibco BRL </td><td> 17502 </td><td> 1:100 </td></tr><tr><td> NT-3 </td><td> PeproTech Inc </td><td> 450-03 </td><td> 2 ng / ml </td></tr><tr><td> Shh </td><td> R &amp; D System </td><td> 1314-SH/CF </td><td> 2 ng / ml </td></tr><tr><td> bFGF </td><td> PeproTech Inc </td><td> 100-18B </td><td> 20 ng / ml </td></tr><tr><td> PDGF-AA </td><td> PeproTech Inc </td><td> 100-13A </td><td> 10 ng / ml </td></tr><tr><td> PDL </td><td> Sigma </td><td> P6407 </td><td> 50 ^ g / m </td></tr><tr><td> PFA </td><td> Electron Microscopy Sciences </td><td> 15712 </td><td> 2% </td></tr><tr><td> Tripsina </td><td> Qualidade Biologicals </td><td> 118-087-721 </td><td></td></tr><tr><td> Papaína </td><td> Worthington </td><td> LK003178 </td><td> 20 U / ml </td></tr><tr><td> DNase frascos </td><td> Worthington </td><td> LK003172 </td><td> 0,005% </td></tr><tr><td> EBSS </td><td> Worthington </td><td> LK003188 </td><td></td></tr><tr><td> Prolongar Ouro comDAPI </td><td> Invitrogen </td><td> P36931 </td><td></td></tr><tr><td></td><td></td><td></td><td> Tabela 1. Reagentes. </td></tr><tr><td></td><td></td><td></td><td><table border="1"><tbody><tr><td> Primário Abs (todos a 1 ug / ml) </td><td></td><td> Isotype espécies </td><td> Fonte </td><td> Abs secundário </td></tr><tr><td colspan="5"> Citometria de Fluxo </td></tr><tr><td> A2B5-Biotina </td><td> Mouse </td><td> IgM </td><td> Dom J. Nielson </td><td> Estreptavidina PETR, Invitrogen, CA </td></tr><tr><td> O4FITC </td><td> Mouse </td><td> IgM </td><td> Presente de J. Nielson </td><td></td></tr><tr><td> A2B5 </td><td> Mouse </td><td> IgM </td><td> Millipore, MA </td><td> gαm IgM-FITC, Invitrogen, CA </td></tr><tr><td> O4 </td><td> Mouse </td><td> IgM </td><td> Millipore, MA </td><td> gαm IgM-FITC, Invitrogen, CA </td></tr><tr><td> GalC </td><td> Mouse </td><td> IgG 3 </td><td> Millipore, MA </td><td> gαm IgG 3-PE, Southern Biotech, AL </td></tr><tr><td> MBP </td><td> Frango </td><td> IgY </td><td> Millipore, MA </td><td> dαck IgY-AMCA, Jackson Immu., PA </td></tr><tr><td> Nestina </td><td> Mouse </td><td> IgG 1 </td><td> Messam et al. 2000 28 </td><td> gαm IgG 1-PECy5, Invitrogen, CA </td></tr><tr><td> GFAP </td><td> Coelho </td><td> IgG </td><td> Millipore, MA </td><td> gαrb IgG-PE, Jackson Immu, PA </td></tr><tr><td> tubulina βIII </td><td> Mouse </td><td> IgG2 </td><td> Covance, CA </td><td> gαm IgG-2-PETR, Invitrogen, CA </td></tr><tr><td colspan="6"> Imunocitoquímica </td></tr><tr><td> tubulina βIII (1:1,500) </td><td> Mouse </td><td> IgG 2a </td><td> Covance, CA </td><td> gαm IgG 2a-FITC, Invitrogen, CA (1:1,000) </td></tr><tr><td> GFAP (1:1,000) </td><td> Coelho </td><td> IgG </td><td> Millipore, MA </td><td> gαrb IgG-FITC, Jackson Immu, PA (1:500) </td></tr><tr><td> MBP (1:50) </td><td> Frango </td><td> IgY </td><td> Millipore, MA </td><td> dαck IgY-FITC, Jackson Immu, PA (1:100) </td></tr><tr><td> O4 (1:100) </td><td> Mouse </td><td> IgM </td><td> Millipore, MA </td><td> gαm IgM-AF546, Invitrogen, CA (1: 100) </td></tr><tr><td> GalC (1:10) </td><td> Coelho </td><td> IgG </td><td> Millipore, MA </td><td> gαm IgM-AF750, Invitrogen, CA (1:100) </td></tr></tbody></table> . Tabela 2 Os anticorpos (Abs) utilizados para ensaios de citometria de fluxo e imunocitoquímica conjugados de anticorpos: PE, ficoeritrina; PETR, ficoeritrina Texas Red; AMCA, amino-metil-cumarina-acetato; Cy, cianina; FITC, isotiocianato de fluoresceína de Ig:. Imunoglobulinas. . AF: Alexa Fluor; gαm: cabra anti-rato; gαrb: cabra anti-coelho; dαck: burro anti-galinha. </td></tr></tbody></table>

progenitor-derived oligodendrocyte culture system from human fetal brain

Diferenciação de progenitores neurais humanas em tipos de células neuronais e gliais oferece um modelo para estudar e compará-regulação molecular do desenvolvimento neural de células de linhagem. Expansão in vitro de células progenitoras neurais a partir de tecido fetal CNS tem sido bem caracterizado. Apesar de a identificação e isolamento de células progenitoras da glia do adulto assunto sub-cortical humano branco e desenvolvimento de várias condições de cultura de diferenciação directa de progenitores neurais fetais em oligodendrócitos de mielina que produzem, adquirindo suficientes oligodendrócitos humanos para experimentação in vitro continua a ser difícil. Diferenciação de galactocerebrósido + (GalC) e O4 + precursor oligodendrócitos ou células progenitoras (OPC) a partir de células precursoras neurais tem sido relatado o uso de segundo trimestre cérebro fetal. No entanto, estas células não proliferam na ausência de células de suporte, incluindo os astrócitos e neurónios, e são rapidamente perdidos ao longo do tempo na cultura. Permanece a necessidade para um sistema de cultura para a produção de células da linhagem de oligodendrócitos adequado para experimentação in vitro. Cultura de oligodendrócitos humanos primários poderiam, por exemplo, ser um modelo útil para estudar a patogénese da neurotrópicas agentes infecciosos, como o poliomavírus humanos, JCV, que in vivo infecta as células. Estas culturas de células podem também proporcionar modelos de outras doenças desmielinizantes do sistema nervoso central (SNC). Primária, fetal humano derivado do cérebro, as células progenitoras neurais multipotenciais proliferam in vitro, mantendo a capacidade de se diferenciar em neurônios (células progenitoras derivadas de neurônios, PDN) e astrócitos (células progenitoras derivadas de astrócitos, PDA) Este estudo mostra que progenitores neurais pode ser induzida para diferenciar através de muitos dos estágios de desenvolvimento da linhagem oligodendrocytic (progenitor derivados de oligodendrócitos, DOP). Nós, de cultura de células progenitoras neurais em meio isento de soro F12 de DMEM-supcomplementado com um factor de crescimento de fibroblastos básico (bFGF), factor de crescimento derivado de plaquetas (PDGF-AA), Sonic hedgehog (Shh), factor neurotrófico 3 (NT-3), N-2 e tri-iodotironina (T3). As células cultivadas são passadas a células 2.5e6 por frascos de 75 centímetros aproximadamente de sete em sete dias. Usando estas condições, a maioria das células na cultura de manter uma morfologia caracterizada por alguns processos e marcadores expressos do pré-oligodendrócitos células, tais como A2B5 e O-4. Quando se remover os factores de crescimento de quatro (GF) (bFGF, PDGF-AA, Shh, NT-3) e adicionar o meio condicionado a partir de PDN, as células começam a adquirir mais processos e os marcadores de diferenciação específicos expressos oligodendrócito, tais como GalC e mielina proteína básica (MBP). Foi realizada a caracterização fenotípica usando multicolor citometria de fluxo para identificar marcadores únicos de oligodendrócitos.

É muito importante para iniciar o processo de diferenciação de uma cultura de células de 70% -80% confluente neural progenitor (Figura 1A). Muitas células irão morrer depois de mudar o meio de cultura de células progenitoras para médio oligo uma vez que inclui fatores de crescimento específicos. Isto indica que o crescimento de células progenitoras neurais não comprometidos com um fenótipo oligodendrocytic não serão suportadas pelo meio novo (Figura 1B). A incubação em m...

Watch this Scientific Journal Video about Progenitor-derived Oligodendrocyte Culture System from Human Fetal Brain at JoVE.com

Progenitor-derived Oligodendrocyte Culture System from Human Fetal Brain

Primário, fetais humanos derivado do cérebro, as células progenitoras multipotenciais proliferam<em&gt; In vitro</em&gt; Enquanto se mantém a capacidade de se diferenciar em neurónios e astrócitos. Este trabalho mostra que os progenitores neurais podem ser induzidas a diferenciar por estágios da linhagem oligodendrocytic por condicionamento com factores de crescimento seleccionados.

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Induced neurons (iNs), the product of somatic cells directly converted to neurons, are a way to obtain patient-derived neurons from tissue that is easily ...

Isolation of Cerebral Capillaries from Fresh Human Brain Tissue

Isolamento dos capilares cerebrais do tecido do cérebro humano fresco

Understanding blood-brain barrier function under physiological and pathophysiological conditions is critical for the development of new therapeutic ...

Migration, Chemo-Attraction, and Co-Culture Assays for Human Stem Cell-Derived Endothelial Cells and GABAergic Neurons

Migração, Quimio-Atração e Ensaios de Cocultura para Células Endoteliais derivadas de células-tronco humanas e neurônios gabaergicos

Role of brain vasculature in nervous system development and etiology of brain disorders is increasingly gaining attention. Our recent studies have ...

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation

Medir e manipular vias neurais funcionalmente específicas no sistema motor humano com estimulação magnética transcraniana

Understanding interactions between brain areas is important for the study of goal-directed behavior. Functional neuroimaging of brain connectivity has ...

Generation of Oligodendrocytes and Oligodendrocyte-Conditioned Medium for Co-Culture Experiments

Geração de Oligodendrocytes e Oligodendrocyte-Conditioned Medium para Experimentos de Cocultura

In the central nervous system, oligodendrocytes are well-known for their role in axon myelination, that accelerates the propagation of action potentials ...