Antes de isolamento do hipocampo Antes de iniciar o isolamento do hipocampo, certifique-se que todas as ferramentas são estéreis. Spray para baixo do capô cultura com etanol 70%, e colocar as ferramentas dentro do capô. Você vai precisar 6 - e os pratos de Petri de 10 cm, estéril poli-L lamínulas de vidro revestido, pipetadores e dicas, pipetas descartáveis, e um pipetador elétrica. Deste ponto em diante, lembre-se de usar a técnica estéril correta. <ol><li> Ligue o banho de água e verifique se ele é aquecido até 37 ° C. </li><li> As seguintes soluções que são armazenados a 4 ° C serão necessários: <ul><li> Médio modificado Eagle (MEM) </li><li> Neurobasal </li><li> Solução tampão salina de Hank (HBSS) </li><li> Solução tampão borato </li><li> Solução de piruvato de sódio </li><li> Estéril filtrado solução de glicose 20% em água destilada </li><li> Certifique-se de spray de todas as garrafas para baixo com etanol 70% antes de os colocar na capa. </li></ul></li><li> Tome essas soluções congeladas fora do freezer e coloque-os em um banho de água aquecida: <ul><li> Uma alíquota de 5 ml de soro de cavalo </li><li> Uma alíquota de 1 ml de B-27 suplemento </li><li> Uma alíquota de 1 ml de 100X antibiótico (penicilina mais estreptomicina) </li><li> E uma alíquota de 0,5 ml de L-glutamina </li></ul></li><li> Após as soluções têm descongelado, tirá-los do banho de água, spray-los com etanol 70%, e colocá-los na capa. Agora, o médio revestimento e Neurobasal podem ser preparadas. </li><li> Após as soluções são preparados, a tampa do recipiente hermeticamente e coloque-os na 37 ° C banho para aquecer durante a realização do isolamento do hipocampo. </li><li> Além disso, tomar uma alíquota da tripsina protease (2,5%) fora do freezer e coloque-o em banho-maria. Tripsina irá digerir o hipocampo dissecados, que será isolada na próxima etapa. </li><li> Pegue um tubo de 15ml cónico, preenchê-lo com HBSS, e rotulá-la com o grupo de tratamento. É aqui que isolado hipocampos serão coletadas na próxima etapa. </li></ol> O isolamento do hipocampo <ol><li> Para começar o isolamento do hipocampo, certifique-se filhotes recém-nascidos são limpos e tivemos bandas de seu leite, placentas e cordões umbilicais removidas por sua mãe. </li><li> Coloque os filhotes em uma placa de Petri, spray com etanol 70% para limpar, e colocá-los na capa. Os animais são sacrificados imediatamente antes de cultivo. </li><li> Para esterilização além disso, tomar um filhote de cachorro do prato, mergulhar o cachorro em etanol 70%, e em seguida em duas lavagens de HBSS estéril. </li><li> Remova a cabeça do corpo com uma tesoura. Usando a tesoura mesmo, cortar a pele eo crânio. </li><li> Usando um par de pinças finas, descasque a caveira longe do cérebro e colocar o cérebro em uma placa de Petri pequena que contém uma pequena quantidade de HBSS estéril. </li><li> Retire os hemisférios cerebrais. O hipocampo é uma pequena estrutura em forma de cavalo-marinho no lobo temporal medial. </li><li> Remova o hipocampo e coloque em 3 ml de HBSS em um tubo de 15 ml. Repita essas etapas com cada filhote, e colocar cada hipocampo isolado dentro do tubo de 15 ml. Agora, é hora de separar o tecido a uma única célula. </li></ol> Hipocampo célula dissociação <ol><li> Afinal hipocampo têm sido isolados, encher o tubo ml de 15-4,5 ml com HBSS. </li><li> Remova a tripsina do banho de água, spray com etanol, e colocar no capô. Adicionar 0,5 ml de tripsina para o tubo e incubar por 15 minutos a 37 ° C. </li><li> No capô, remover a solução HBSS / tripsina do tubo com uma pipeta estéril, tomando cuidado para não perturbar o hipocampo que se instalaram na parte inferior do tubo. Adicionar 5 ml de HBSS ao tubo e agite bem. Incubar a 37 ° C por 5 minutos. </li><li> Repita este passo duas vezes, a remoção do antigo e substituindo HBSS com solução fresca. </li><li> Tomar uma alíquota de DNAse I para fora do freezer. Adicionar 0,5 ml de DNase ao hipocampo em 4,5 ml HBSS. A DNAse é adicionada para promover a inativação da enzima. </li><li> Triturar a solução (ou pipeta cima e para baixo) até que fique homogêneo. Tenha cuidado para não introduzir bolhas no homogeneizado. </li><li> Determinar a viabilidade celular com o método de exclusão pelo azul de tripan. </li><li> Tome de 10 cm placa de Petri contendo 6-8 lamínulas, e adicione 10 ml de meio de placas. Pipetar o número desejado de células para o prato contendo as lamelas. Agite cuidadosamente para dispersar as células, e certifique-se as lamelas não se sobrepõem. </li><li> Permitir que as células para anexar por 2-4 horas em um umidificado 37 ° C incubadora com 5% de CO 2. Após a confirmação de que as células são viáveis ​​e têm anexados, transferir as lamelas de pratos individuais contendo meio Neurobasal. Coloque esses pratos de volta para a incubadora. </li><li> Uma vez por semana, substituir um terço da média com média Neurobasal fresco e tratamentos experimentais, conforme necessário. Agora, as propriedades funcionais dessas células em cultura estão prontos para serem estudados. </li></ol> Fura-2 Imagem de cálcio de neurônios do hipocampo <ol><li> Depois de cultivadas neurônios do hipocampo têm sido in vitro por 48 horas (mas não anterior), experimentos com imagens de cálcio pode começar. Neste ponto, esses neurônios deveria ter começado a estender os processos. A faixa etária ideal para imagens de cálcio é de dia in vitro 3-7. </li><li> Culturas de carga com Fura-02:00 por 30 minutos a 37 ° C, após o que pode ser trabalhada sob um objetivo 20X usando uma lâmpada de arco de xenônio para excitar o corante indicador de cálcio e uma de 512 bits câmera CCD, que amostras a cada 150ms. </li></ol>

<ol>
	<li>Banker, G., Goslin, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Culturing Nerve Cells, 2nd Edition. , (1998).</li></ol>

Este protocolo foi desenvolvido como uma modificação do trabalho seminal de Gary Banker e Goslin Kim 1. Este livro é um recurso essencial para qualquer pessoa interessada em células de cultura - não apenas as culturas de neurônios enriquecido descritos no protocolo atual. Os três fatores mais críticos em cultura de células são: velocidade de esterilidade, a escolha do meio utilizado. Esterilidade - fluxo laminar um / capa estéril, condições assépticas, e uma incubadora de estéreis s...

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		<div>
		<table border="1">
		<thead>
		<tr>
		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>Antibiotic antimitotic</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>15240062</td>
<td>&nbsp;</td>
<tr>
<td>B-27 Supplement</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>17504044</td>
<td>Serum free</td>
</tr>
<tr>
<td>Boric Acid</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>B6768</td>
<td>&nbsp;</td>
<tr>
<td>Dnase I</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>DN25</td>
<td>&nbsp;</td>
<tr>
<td>Fura-2, AM cell permeant</td>
<td>&nbsp;</td>
<td>Molecular Probes</td>
<td>F1221</td>
<td>&nbsp;</td>
<tr>
<td>Glucose</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>G7528</td>
<td>&nbsp;</td>
<tr>
<td>HBSS (10X)</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>14185052</td>
<td>&nbsp;</td>
<tr>
<td>HEPES</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>15630080</td>
<td>&nbsp;</td>
<tr>
<td>L-Glutamine</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>G7513</td>
<td>&nbsp;</td>
<tr>
<td>MEM</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>51200038</td>
<td>&nbsp;</td>
<tr>
<td>Neurobasal</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>12348017</td>
<td>Without phenol red</td>
</tr>
<tr>
<td>Poly-L-Lysine Hydrobromide</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>P6282</td>
<td>&nbsp;</td>
<tr>
<td>Pyruvic Acid</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>P2256</td>
<td>&nbsp;</td>
<tr>
<td>Sodium Pyruvate</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>P2256</td>
<td>&nbsp;</td>
<tr>
<td>Sodium Tetraborate</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Trypsin, 2.5% (10X)</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>15090046</td>
<td>&nbsp;</td>		</tbody>
		</table>
		</div>

primary culture of hippocampal neurons from p0 newborn rats

As propriedades fisiológicas de neurônios do hipocampo são comumente investigado, especialmente por causa do envolvimento do hipocampo na aprendizagem e memória. Cultura de células primárias do hipocampo permite que os neurocientistas para examinar a atividade e as propriedades dos neurônios na célula individual e nível de sinapse único. Neste vídeo, vamos demonstrar como isolar e cultivar células primárias de hipocampo de ratos recém-nascidos. O hipocampo pode ser isolado de cada animal recém-nascido em tão curto quanto 2 a 3 minutos, e as culturas podem ser mantidas por até duas semanas. Também vamos brevemente demonstrar como usar esses neurônios do hipocampo para a imagem latente de cálcio raciométrica. Embora este protocolo descreve o processo para o hipocampo, com pouca ou nenhuma modificação, ele pode ser aplicado a outras regiões do cérebro.

Watch this Scientific Journal Video about Primary Culture of Hippocampal Neurons from P0 Newborn Rats at JoVE.com

Primary Culture of Hippocampal Neurons from P0 Newborn Rats

A dissecção e crescimento de células de uma área do cérebro individuais facilita investigação de parâmetros celulares e fisiológicos. Nós descrevemos um método para cultivo de células primárias, que produz neurônios enriquecido culturas em um ambiente sem soro.

Cultura primária de neurônios do hipocampo de ratos recém-nascidos P0

The physiological properties of hippocampal neurons are commonly investigated, especially because of the involvement of the hippocampus in learning and ...

primary-culture-of-hippocampal-neurons-from-p0-newborn-rats

Research

JoVE Journal

Biology

76.4K visualizações.  Michigan State University (MSU). A dissecção e crescimento de células de uma área do cérebro individuais facilita investigação de parâmetros celulares e fisiológicos. Nós descrevemos um método para cultivo de células primárias, que produz neurônios enriquecido culturas em um ambiente sem soro.

Vídeo: Primary Culture of Hippocampal Neurons from P0 Newborn Rats

Gene-gun Transfection of Hippocampal Neurons

Gene-gun Transfection de neurônios do hipocampo

Biologia

Live Imaging of Dense-core Vesicles in Primary Cultured Hippocampal Neurons

Observing and characterizing dynamic cellular processes can yield important information about cellular activity that cannot be gained from static images.  Vital fluorescent probes, particularly green fluorescent protein (GFP) have revolutionized cell biology stemming from the ability to label specific intracellular compartments and cellular structures. For example, the live imaging of GFP (and its spectral variants) chimeras have allowed for a dynamic 
analysis of the cytoskeleton, organelle transport, and membrane dynamics in a multitude of organisms and cell types [1-3].  Although live imaging has become prevalent, this approach still poses many technical challenges, particularly in primary cultured neurons.  One challenge is the expression of GFP-tagged proteins in post-mitotic neurons; the other is the ability to capture fluorescent images while minimizing phototoxicity, photobleaching, 
and maintaining general cell health.  Here we provide a protocol that describes a lipid-based transfection method that yields a relatively low transfection rate (~0.5%), however is ideal for the imaging of fully polarized neurons.  A low transfection rate is essential so that single axons and dendrites can be characterized as to their orientation to the cell body to confirm directionality of transport, i.e., anterograde v. retrograde.  Our approach to imaging 
GFP expressing neurons relies on a standard wide-field fluorescent microscope outfitted with a CCD camera, image capture software, and a heated imaging chamber. We have imaged a wide variety of organelles or structures, for example, dense-core vesicles, mitochondria, growth cones, and actin without any special optics or excitation requirements other than a fluorescent light source. Additionally, spectrally-distinct, fluorescently 
labeled proteins, e.g., GFP and dsRed-tagged proteins, can be visualized near simultaneously to characterize co-transport or other coordinated cellular events.  The imaging approach described here is flexible for a variety of imaging applications and can be adopted by a laboratory for relatively little cost provided a microscope is available.

Live cell imaging is of particular utility when studying the dynamics of organelle trafficking. Here we describe a protocol for live imaging of dense-core vesicles in cultured neurons using wide-field fluorescence microscopy. This protocol is flexible and can be adapted to image other organelles such as mitochondria, endosomes, and peroxisomes.

Imagens ao vivo de vesículas com núcleo denso na Primária Cultivadas neurônios do hipocampo

Observing and characterizing dynamic cellular processes can yield important information about cellular activity that cannot be gained from static images.  ...

Primary Culture of Adult Rat Heart Myocytes

Cultured primary adult rodent heart cells are an important model system for cardiovascular research. Nevertheless, establishment of robust, viable cultured adult myocytes can be a technically challenging, rate-limiting step for many researchers. Here we described a protocol to obtain a high yield of adult rat heart myocytes that remain viable in culture for several days. The heart is isolated and perfused with collagenase and protease under low Ca2+ conditions to recover single myocytes. Ca2+-tolerant cells are obtained by stepwise increases in extracellular Ca2+ concentration in three subsequent wash steps. Cells are filtered, resuspended in culture medium, and plated on laminin coated slips. Cultured myocytes obtained using this protocol are viable for up to four days and are suitable for most experiments including electrophysiology, biochemistry, imaging and molecular biology.

In this paper, we described a typical way to isolate and culture adult rat heart myocytes. Collagenase and protease are used to digest and isolate single myocytes. Myocytes cultured follow this protocol meet most experiment requirements.

Cultura primária de Miócitos Coração Adulto Rat

Cultured primary adult rodent heart cells are an important model system for cardiovascular research.  Nevertheless, establishment of robust, viable ...

Dissection of Hippocampal Dentate Gyrus from Adult Mouse

The hippocampus is one of the most widely studied areas in the brain because of its important functional role in memory processing and learning, its remarkable neuronal cell plasticity, and its involvement in epilepsy, neurodegenerative diseases, and psychiatric disorders. The hippocampus is composed of distinct regions; the dentate gyrus, which comprises mainly granule neurons, and Ammon's horn, which comprises mainly pyramidal neurons, and the two regions are connected by both anatomic and functional circuits. Many different mRNAs and proteins are selectively expressed in the dentate gyrus, and the dentate gyrus is a site of adult neurogenesis; that is, new neurons are continually generated in the adult dentate gyrus. To investigate mRNA and protein expression specific to the dentate gyrus, laser capture microdissection is often used. This method has some limitations, however, such as the need for special apparatuses and complicated handling procedures. In this video-recorded protocol, we demonstrate a dissection technique for removing the dentate gyrus from adult mouse under a stereomicroscope. Dentate gyrus samples prepared using this technique are suitable for any assay, including transcriptomic, proteomic, and cell biology analyses. We confirmed that the dissected tissue is dentate gyrus by conducting real-time PCR of dentate gyrus-specific genes, tryptophan 2,3-dioxygenase (TDO2) and desmoplakin (Dsp), and Ammon's horn enriched genes, Meis-related gene 1b (Mrg1b) and TYRO3 protein tyrosine kinase 3 (Tyro3). The mRNA expressions of TDO2 and Dsp in the dentate gyrus samples were detected at obviously higher levels, whereas Mrg1b and Tyro3 were lower levels, than those in the Ammon's horn samples. To demonstrate the advantage of this method, we performed DNA microarray analysis using samples of whole hippocampus and dentate gyrus. The mRNA expression of TDO2 and Dsp, which are expressed selectively in the dentate gyrus, in the whole hippocampus of alpha-CaMKII+/- mice, exhibited 0.037 and 0.10-fold changes compared to that of wild-type mice, respectively. In the isolated dentate gyrus, however, these expressions exhibited 0.011 and 0.021-fold changes compared to that of wild-type mice, demonstrating that gene expression changes in dentate gyrus can be detected with greater sensitivity. Taken together, this convenient and accurate dissection technique can be reliably used for studies focused on the dentate gyrus.

A dissection technique for removal of the dentate gyrus from adult mouse under a stereomicroscope was demonstrated in this video-recorded protocol.

Dissecção do giro denteado do hipocampo de rato adulto

The hippocampus is one of the most widely studied areas in the brain because of its important functional role in memory processing and learning, its ...

Isolation and Primary Culture of Rat Hepatic Cells

Primary hepatocyte culture is a valuable tool that has been extensively used in basic research of liver function, disease, pathophysiology, pharmacology and other related subjects. The method based on two-step collagenase perfusion for isolation of intact hepatocytes was first introduced by Berry and Friend in 1969 1 and, since then, has undergone many modifications. The most commonly used technique was described by Seglenin 1976 2. Essentially, hepatocytes are dissociated from anesthetized adult rats by a non-recirculating collagenase perfusion through the portal vein. The isolated cells are then filtered through a 100 &mu;m pore size mesh nylon filter, and cultured onto plates. After 4-hour culture, the medium is replaced with serum-containing or serum-free medium, e.g. HepatoZYME-SFM, for additional time to culture. These procedures require surgical and sterile culture steps that can be better demonstrated by video than by text. Here, we document the detailed steps for these procedures by both video and written protocol, which allow consistently in the generation of viable hepatocytes in large numbers.

Primary hepatocytes provide a valuable tool to evaluate biochemical, molecular, and metabolic functions in a physiologically relevant experimental system. We describe a reliable protocol for rat in situ liver perfusion, which consistently generates viable hepatocytes up to 1.0 &times; 108 cells per preparation with cell viability between 88 ~ 96%.

Isolamento e cultura primária de células hepáticas de ratos

Primary hepatocyte culture is a valuable tool that has been extensively used in basic research of liver function, disease, pathophysiology, pharmacology ...

Isolation and Primary Culture of Mouse Aortic Endothelial Cells

The vascular endothelium is essential to normal vascular homeostasis. Its dysfunction participates in various cardiovascular disorders. The mouse is an important model for cardiovascular disease research. This study demonstrates a simple method to isolate and culture endothelial cells from the mouse aorta without any special equipment. To isolate endothelial cells, the thoracic aorta is quickly removed from the mouse body, and the attached adipose tissue and connective tissue are removed from the aorta. The aorta is cut into 1 mm rings. Each aortic ring is opened and seeded onto a growth factor reduced matrix with the endothelium facing down. The segments are cultured in endothelial cell growth medium for about 4 days. The endothelial sprouting starts as early as day 2. The segments are then removed and the cells are cultured continually until they reach confluence. The endothelial cells are harvested using neutral proteinase and cultured in endothelial cell growth medium for another two passages before being used for experiments. Immunofluorescence staining indicated that after the second passage the majority of cells were double positive for Dil-ac-LDL uptake, Lectin binding, and CD31 staining, the typical characteristics of endothelial cells. It is suggested that cells at the second to third passages are suitable for in vitro and in vivo experiments to study the endothelial biology. Our protocol provides an effective means of identifying specific cellular and molecular mechanisms in endothelial cell physiopathology.

The vascular endothelial cells play a significant role in many important cardiovascular disorders. This article describes a simple method to isolate and expand endothelial cells from the mouse aorta without using any special equipment. Our protocol provides an effective means of identifying mechanisms in endothelial cell physiopathology.

Isolamento e cultura primária de células de camundongo aórtica endoteliais

The vascular endothelium is essential to normal vascular homeostasis. Its dysfunction participates in various cardiovascular disorders. The mouse is an ...

Isolation and Culture of Primary Mouse Keratinocytes from Neonatal and Adult Mouse Skin

The keratinocyte (KC) is the predominant cell type in the epidermis, the outermost layer of the skin. Epidermal KCs play a critical role in providing skin defense by forming an intact skin barrier against environmental insults, such as UVB irradiation or pathogens, and also by initiating an inflammatory response upon those insults. Here we describe methods to isolate KCs from neonatal mouse skin and from adult mouse tail skin. We also describe culturing conditions using defined growth supplements (dGS) in comparison to chelexed fetal bovine serum (cFBS). Functionally, we show that both neonatal and adult KCs are highly responsive to high calcium-induced terminal differentiation, tight junction formation and stratification. Additionally, cultured adult KCs are susceptible to UVB-triggered cell death and can release large amounts of TNF upon UVB irradiation. Together, the methods described here will be useful to researchers for the setup of in vitro models to study epidermal biology in the neonatal mouse and/or the adult mouse.

Epidermal keratinocytes form a functional skin barrier and are positioned at the front line of host defense against external environmental insults. Here we describe methods for isolation and primary culture of epidermal keratinocytes from neonatal and adult mouse skin, and induction of terminal differentiation and UVB-triggered inflammatory response from keratinocytes.

Isolamento e Cultura de Queratinócitos de Rato Primário de Pele de Rato Neonatal e Adulto

The keratinocyte (KC) is the predominant cell type in the epidermis, the outermost layer of the skin. Epidermal KCs play a critical role in providing skin ...

Isolation and Culture of Primary Aortic Endothelial Cells from Miniature Pigs

Xenotransplantation is a promising way to resolve the shortage of human organs for patients with end-stage organ failure, and the pig is considered as a suitable organ source. Immune rejection and coagulation are two major hurdles for the success of xenotransplantation. Vascular endothelial cell (EC) injury and dysfunction are important for the development of the inflammation and coagulation responses in xenotransplantation. Thus, isolation of porcine aortic endothelial cells (pAECs) is necessary for investigating the immune rejection and coagulation responses. Here, we have developed a simple enzymatic approach for the isolation, characterization, and expansion of highly purified pAECs from miniature pigs. First, the miniature pig was anaesthetized with ketamine, and a length of aorta was excised. Second, the endothelial surface of aorta was exposed to 0.005% collagenase IV digestive solution for 15 min. Third, the endothelial surface of the aorta was scraped in only one direction with a cell scraper (&#60;10 times), and was not compressed during the process of scraping. Finally, the isolated pAECs of Day 3, and after passage 1 and passage 2, were identified by flow cytometry with an anti-CD31 antibody. The percentages of CD31-positive cells were 97.4% &#177; 1.2%, 94.4% &#177; 1.1%, and 92.4% &#177; 1.7% (mean &#177; SD), respectively. The concentration of Collagenase IV, the digestive time, the direction, and frequency and intensity of scraping are critical for decreasing fibroblast contamination and obtaining high-purity and a large number of ECs. In conclusion, our enzymatic method is a highly-effctive method for isolating ECs from the miniature pig aorta, and the cells can be expanded in vitro to investigate the immune and coagulation responses in xenotransplantation.

An effective enzymatic method for isolation of primary porcine aortic endothelial cells (pAECs) from miniature pigs is described. The isolated primary pAECs can be used to investigate the immune and coagulation response in xenotransplantation.

Isolamento e cultura de células endoteliais aórticas primárias de suínos em miniatura

Xenotransplantation is a promising way to resolve the shortage of human organs for patients with end-stage organ failure, and the pig is considered as a ...

Isolation and Differentiation of Primary White and Brown Preadipocytes from Newborn Mice

The understanding of the mechanisms underlying adipocyte differentiation and function has greatly benefited from the use of immortalized white preadipocyte cell lines. These cultured cell lines, however, have limitations. They do not fully capture the diverse functional spectrum of the heterogenous adipocyte populations that are now known to exist within white adipose depots. To provide a more physiologically relevant model to study the complexity of white adipose tissue, a protocol has been developed and optimized to enable simultaneous isolation of primary white and brown adipocyte progenitors from newborn mice, their rapid expansion in culture, and their differentiation in vitro into mature, fully functional adipocytes. The primary advantage of isolating primary cells from newborn, rather than adult mice, is that the adipose depots are actively developing and are, therefore, a rich source of proliferating preadipocytes. Primary preadipocytes isolated using this protocol differentiate rapidly upon reaching confluence and become fully mature in 4-5 days, a temporal window that accurately reflects the appearance of developed fat pads in newborn mice. Primary cultures prepared using this strategy can be expanded and studied with high reproducibility, making them suitable for genetic and phenotypic screens and enabling the study of the cell-autonomous adipocyte phenotypes of genetic mouse models. This protocol offers a simple, rapid, and inexpensive approach to study the complexity of adipose tissue in vitro.

This report describes a protocol for the simultaneous isolation of primary brown and white preadipocytes from newborn mice. Isolated cells can be grown in culture and induced to differentiate into fully mature white and brown adipocytes. The method enables genetic, molecular, and functional characterization of primary fat cells in culture.

Isolamento e diferenciação de preadipócitos brancos e marrons primários de camundongos recém-nascidos

The understanding of the mechanisms underlying adipocyte differentiation and function has greatly benefited from the use of immortalized white ...

Isolation and Culture of Primary Oral Keratinocytes from the Adult Mouse Palate

For years, most studies involving keratinocytes have been conducted using human and mouse skin epidermal keratinocytes. Recently, oral keratinocytes have attracted attention because of their unique function and characteristics. They maintain the homeostasis of the oral epithelium and serve as resources for applications in regenerative therapies. However, in vitro studies that use oral primary keratinocytes from adult mice have been limited due to the lack of an efficient and well-established culture protocol. Here, oral primary keratinocytes were isolated from the palate tissues of adult mice and cultured in a commercial low-calcium medium supplemented with a chelexed-serum. Under these conditions, keratinocytes were maintained in a proliferative or stem cell-like state, and their differentiation was inhibited even after increased passages. Marker expression analysis showed that the cultured oral keratinocytes expressed the basal cell markers p63, K14, and &#945;6-integrin and were negative for the differentiation marker K13 and the fibroblast marker PDGFR&#945;. This method produced viable and culturable cells suitable for downstream applications in the study of oral epithelial stem cell functions in vitro.

The present protocol describes the isolation and culture of oral keratinocytes derived from the adult mouse palate. An evaluation method using immunostaining is also reported.

Isolamento e Cultura de Queratinócitos Orais Primários do Paladar do Rato Adulto

For years, most studies involving keratinocytes have been conducted using human and mouse skin epidermal keratinocytes. Recently, oral keratinocytes have ...