Name: adult and embryonic skeletal muscle microexplant culture and isolation of skeletal muscle stem cells
Uploaded: 2010-09-21T17:10:00
Duration: 14 min 36 s
Description: Watch this Scientific Journal Video about Adult and Embryonic Skeletal Muscle Microexplant Culture and Isolation of Skeletal Muscle Stem Cells at JoVE.com

Agradecemos a Patrick Paddison pelo seu dom do vetor de transporte shRNAi. Angela Sloan gerou a GFP imagem RNAi na Figura 3. Agradecemos também aos organismos de financiamento a seguir para o seu apoio: Muscular Dystrophy Campaign RA2/592/2 número de concessão; SPARKS conceder número 02BHM04, The Royal Society número de concessão 574006.G503/1948./JE BBSRC e número de concessão 6/SAG10077.

<ol>
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P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cranial+paraxial+mesoderm:+regionalization+of+cell+fate+and+impact+on+craniofacial+development+in+mouse+embryos.">Cranial paraxial mesoderm: regionalization of cell fate and impact on craniofacial development in mouse embryos.</a> Development. 120, 2397-2408 (1994).</li><li>Tajbakhsh, S., Rocancourt, D., Cossu, G., Buckingham, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Redefining+the+genetic+hierarchies+controlling+skeletal+myogenesis+Pax-3+and+Myf-5+act+upstream+of+MyoD.">Redefining the genetic hierarchies controlling skeletal myogenesis Pax-3 and Myf-5 act upstream of MyoD.</a> Cell. 89, 127-138 (1997).</li><li>Tremblay, P., Dietrich, S., Mericskay, M., Schubert, F. R., Li, Z., Paulin, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+crucial+role+for+Pax3+in+the+development+of+the+hypaxial+musculature+and+the+longrange+migration+of+muscle+precursors.">A crucial role for Pax3 in the development of the hypaxial musculature and the longrange migration of muscle precursors.</a> Dev Biol. 203, 49-61 (1998).</li><li>Tajbakhsh, S., Bober, E., Babinet, C., Pournin, S., Arnold, H., Buckingham, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gene+targeting+the+myf-5+locus+with+nlacZ+reveals+expression+of+this+myogenic+factor+in+mature+skeletal+muscle+fibres+as+well+as+early+embryonic+muscle.">Gene targeting the myf-5 locus with nlacZ reveals expression of this myogenic factor in mature skeletal muscle fibres as well as early embryonic muscle.</a> Dev Dyn. 206, 291-300 (1996).</li><li>Tam, P. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+study+of+the+pattern+of+prospective+somites+in+the+presomitic+mesoderm+of+mouse+embryos.">A study of the pattern of prospective somites in the presomitic mesoderm of mouse embryos.</a> J Embryol Exp Morphol. 92, 269-285 (1986).</li><li>Cossu, G., Kelly, R., Donna, S. D. i., Vivarelli, E., Buckingham, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Myoblast+differentiation+during+mammalian+somitogenesis+is+dependent+upon+a+community+effect.">Myoblast differentiation during mammalian somitogenesis is dependent upon a community effect.</a> Proc Natl Acad Sci USA. 92, 2254-2258 (1995).</li><li>Shainberg, A., Yagil, G., Yaffe, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Control+of+myogenesis+in+vitro+by+Ca2++concentration+in+nutritional+medium.">Control of myogenesis in vitro by Ca2+ concentration in nutritional medium.</a> Exp Cell Res. 58, 163-167 (1969).</li><li>Dodson, M. V., Martin, E. L., Brannon, M. A., Mathison, B. A., McFarland, D. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Optimization+of+bovine+satellite+cell-derived+myotube+formation+in+vitro.">Optimization of bovine satellite cell-derived myotube formation in vitro.</a> Tissue Cell. 19, 159-166 (1987).</li><li>Smith, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Muscle+Growth+factors,+ubiquitin+and+apoptosis+in+dystrophic+muscle:+Apoptosis+declines+with+age+in+the+mdx+mouse.">Muscle Growth factors, ubiquitin and apoptosis in dystrophic muscle: Apoptosis declines with age in the mdx mouse.</a> B Appl Myol. 6, 279-284 (1996).</li><li>Smith, J., Fowke, G., Schofield, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Programmed+cell+death+in+dystrophic+(mdx)+muscle+is+inhibited+by+IGF-II.">Programmed cell death in dystrophic (mdx) muscle is inhibited by IGF-II.</a> Cell Death Differ. 2, 243-251 (1995).</li><li>Smith, J., Schofield, P. N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stable+integration+of+an+mdx+skeletal+muscle+cell+line+into+dystrophic+(mdx)+skeletal+muscle:+evidence+for+stem+cell+status.">Stable integration of an mdx skeletal muscle cell line into dystrophic (mdx) skeletal muscle: evidence for stem cell status.</a> Cell Growth Differ. 8, 927-934 (1997).</li><li>O Shea, L., Johnson, C., Rooney, M., Gleeson, R., Woods, K., Smith, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Adipogenesis+and+skeletal+muscle+ageing.">Adipogenesis and skeletal muscle ageing.</a> Mech Ageing Dev. 122, 1354-1355 (2001).</li><li>Merrick, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> A role for Igf-2 in fast skeletal muscle specification during myogenesis in dystrophic and wild type embryos [dissertation]. , (2006).</li><li>Stadler, L. K. J., Merrick, D., Smith, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Morphological+stem+cell+and+fast+myosin+abnormalities+in+the+cav-3+/+and+mdx+dystrophic+embryo+reveal+an+embryonic+basis+for+muscular+dystrophy.">Morphological stem cell and fast myosin abnormalities in the cav-3 / and mdx dystrophic embryo reveal an embryonic basis for muscular dystrophy.</a> Abstr. Genet.Res. 90, 281-289 (2008).</li><li>Merrick, D., Stadler, L. K. J., Larner, D. P., Smith, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Morphological+stem+cell+and+fast+myosin+abnormalities+in+the+cav-3+/+and+mdx+dystrophic+embryo+reveal+an+embryonic+basis+for+muscular+dystrophy.">Morphological stem cell and fast myosin abnormalities in the cav-3 / and mdx dystrophic embryo reveal an embryonic basis for muscular dystrophy.</a> Dis Model Mech. 2, 374-388 (2009).</li><li>Matschak, T., Stickland, N. C., Smith, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Explants+of+embryonic+Atlantic+salmon+muscle+in+culture.">Explants of embryonic Atlantic salmon muscle in culture.</a> Proc Soc Exp Biol A. 1, 23-23 (1997).</li><li>Smith, J., Hooper, M. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dominance+and+independent+segregation+of+metabolic+cooperation+competence+and+pluripotency+in+an+embryonal+carcinoma+cell+hybrid.">Dominance and independent segregation of metabolic cooperation competence and pluripotency in an embryonal carcinoma cell hybrid.</a> Exp Cell Res. 181, 40-50 (1989).</li><li>Bulfield, G., Siller, W. G., Wight, P. A., Moore, K. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=X+chromosome+linked+muscular+dystrophy+(mdx)+in+the+mouse.">X chromosome linked muscular dystrophy (mdx) in the mouse.</a> Proc Natl Acad Sci USA. 81, 1189-1192 (1984).</li><li>Hagiwara, Y., Sasaoka, T., Araishi, K., Imamura, M., Yorifuji, H., Nonaka, I., Ozawa, E., Kikuchi, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Caveolin-3+deficiency+causes+muscle+degeneration+in+mice.">Caveolin-3 deficiency causes muscle degeneration in mice.</a> Hum Mol Genet. 9, 3047-3054 (2000).</li><li>Westbury, J., Watkins, M., Ferguson-Smith, A. C., Smith, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dynamic+temporal+and+spatial+regulation+of+the+cdk+inhibitor+p57+(kip2)+during+embryo+morphogenesis.">Dynamic temporal and spatial regulation of the cdk inhibitor p57 (kip2) during embryo morphogenesis.</a> Mech Dev. 109, 83-89 (2001).</li><li>Merrick, D., Ting, T., Stadler, L. K. J., Smith, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+role+for+Insulin-like+growth+factor+2+in+specification+of+the+fast+skeletal+muscle+fibre.">A role for Insulin-like growth factor 2 in specification of the fast skeletal muscle fibre.</a> BMC Dev Biol. 7, 65-65 (2007).</li><li>Paddison, P. J., Caudy, A. A., Hannon, G. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stable+suppression+of+gene+expression+by+RNAi+in+mammalian+cells+AQ4.">Stable suppression of gene expression by RNAi in mammalian cells AQ4.</a> Proc Natl Acad Sci USA. 99, 1443-1448 (2002).</li><li>Smith, J., Merrick, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Skeletal+Muscle+Microexplant+Culture+and+Isolation+of+Skeletal+Muscle+Stem+Cells.">Skeletal Muscle Microexplant Culture and Isolation of Skeletal Muscle Stem Cells.</a> Methods in Molecular Biology. 633, (2010).</li></ol>

Não há conflitos de interesse declarados.

Culturas de explantes microdissecado pode ser usado de forma confiável e reprodutível isolar populações de células contendo uma proporção muito alta (~ 85%) de Myf-5 proliferativa positiva células do músculo esquelético haste (SMSC). Sob as condições de cultura rigorosamente controlados descritas aqui as culturas de explante primário pode ser usado para caracterizar os comportamentos de crescimento de rato geneticamente mutantes SMSC e pode ser usado como um meio de geração de miotubos de detalhada análise in vitro dos processos de diferenciação. Manutenção cuidadosa e manipulação dessas culturas permite a longo prazo de cultura e de expansão. Usando os métodos descritos aqui também é possível derivar clonal músculo esquelético linhas de células estaminais a partir de culturas de explantes, por meio da diluição única célula. Para alcançar a proliferação de células isoladas único durante o procedimento de clonagem, &quot;meio condicionado&quot; é usado para imitar a exigência normal destas células de alta densidade de cultura. O método é aplicável (com modificação) para embrionárias, tecidos adultos e idosos, adultos e, além de mouse pode ser usado para isolar as células dos músculos esqueléticos de outras espécies, incluindo humanos (Rao e Smith, não publicado), embrião de galinha e peixe ( salmão) 24. SMSC clonalmente derivados podem ser analisadas in vivo por via intramuscular transplante e sob essas condições injetado SMSC irá combinar com miotubos hospedeiro para formar fibras musculares híbrido. SMSC por via intramuscular injetado não formam tumores e foram encontrados nos músculos anfitrião na posição das células satélites mais de um ano após a injeção, sugerindo que eles estão sujeitos a controle endógeno pelo satélite células-tronco niche.These célula pode ser re-isolado injetado hosts como SMSC proliferativa mais de 12 meses após a injeção anfitrião 19.

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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>DMEM/F12 1:1 mix</td>
<td>&nbsp;</td>
<td>Sigma-Aldrich Company</td>
<td>&nbsp;</td>
<td>Liquid medium: (Dulbecco's Modified Eagles's medium and Ham's F12 medium, 1:1 v/v)</td>
</tr>
<tr>
<td>100&#215; Glutamine (200mM)</td>
<td>&nbsp;</td>
<td>Sigma-Aldrich Company</td>
<td>&nbsp;</td>
<td>Diluted in medium to a 1&#215; concentration of 2 mM (Glutamine HYBRI-MAX R)
</td>
</tr>
<tr>
<td>Fetal calf serum (FCS)</td>
<td>&nbsp;</td>
<td>From a number of different companies</td>
<td>&nbsp;</td>
<td>Batch tested on primary cultures and skeletal muscle cell lines. 10-20% supplement to liquid media</td>
</tr>
<tr>
<td>Heraeus Labofuge 300</td>
<td>&nbsp;</td>
<td>Heraeus and distributors of Heraeus equipment</td>
<td>&nbsp;</td>
<td>Lab centrifuge capable of reaching 1,000 rpm</td>
</tr>
<tr>
<td>15 ml Falcon centrifuge tubes</td>
<td>&nbsp;</td>
<td>Fisher Scientific</td>
<td>&nbsp;</td>
<td>Must fit lab centrifuge</td>
</tr>
<tr>
<td>Tissue culture plasticware (25, 75 or 175 mm2 tissue culture vessels; 96-well tissue culture plates. 60 mm Petri dishes).</td>
<td>&nbsp;</td>
<td>Nunc (available from Fisher Scientific in the UK)</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Humidified CO2 incubator (Heraeus)</td>
<td>&nbsp;</td>
<td>Heraeus and distributors of Heraeus equipment</td>
<td>&nbsp;</td>
<td>Ours is copper lined, recommended for reducing contamination</td>
</tr>
<tr>
<td>Sterile hood with laminar air flow (Heraeus)</td>
<td>&nbsp;</td>
<td>Heraeus and distributors of Heraeus equipment</td>
<td>&nbsp;</td>
<td>Ours is a Class II hood &#x2013; suitable for use with Human tissues</td>
</tr>
<tr>
<td>Water Bath</td>
<td>&nbsp;</td>
<td>Grant Equipment</td>
<td>&nbsp;</td>
<td>Maintained always at 37&deg;C</td>
</tr>
<tr>
<td>Inverted microscope</td>
<td>&nbsp;</td>
<td>Leica DMIRB, Leica Instruments, UK)</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>70% Ethanol</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>For sterilization (animals, dissection instruments) and swabbing benches, hood, etc. </td>
</tr>
<tr>
<td>Calcium- and magnesium-free phosphate-buffered saline (PBS)</td>
<td>&nbsp;</td>
<td>Sigma-Aldrich Company, UK</td>
<td>&nbsp;</td>
<td>Cell culture-tested PBS (Dulbecco&#x2019;s formula) is purchased as a ready-mixed powder or in tablet form and made up with doubledistilled water before sterilization by autoclave. PBS consists of 2.68 mM potassium chloride (KCl); 1.47 mM potassium phosphate monobasic (KH2PO4); 0.137 M sodium chloride (NaCl); and 8.1 mM sodium phosphate
dibasic (Na2HPO4). PBS can be prepared from scratch as follows: 200 mg KCl, 200 mg KH2PO4, 8 g NaCl and 1.15 g Na2HPO4/l of double-distilled water followed by
sterilization by autoclave.
</td>
</tr>
<tr>
<td>CryoTube vials</td>
<td>&nbsp;</td>
<td>Nunc (see above)</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>A Neubauer haematocytometer and coverslips</td>
<td>&nbsp;</td>
<td>Fisher Scientific, UK</td>
<td>&nbsp;</td>
<td>For estimating cell counting</td>
</tr>
<tr>
<td>Hand counter</td>
<td>&nbsp;</td>
<td>Fisher Scientific, UK</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Dissection microscope, Zeiss Stemi 1000</td>
<td>&nbsp;</td>
<td>Zeiss, UK</td>
<td>&nbsp;</td>
<td>For preparation of explants</td>
</tr>
<tr>
<td>Small sterile hood</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Sterile dissection instruments (including Jeweler&#x2019;s forceps)</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>Sterilised by autoclave</td>
</tr>
<tr>
<td>Sterile plastic collecting vessels (7 ml bijou tubes or 20ml universals)</td>
<td>&nbsp;</td>
<td>Nunc (Fisher Scientific)</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Warm PECM</td>
<td>&nbsp;</td>
<td>Constituents purchased from Sigma-Aldrich, UK as above</td>
<td>&nbsp;</td>
<td>Made up in the sterile hood and warmed to 37&deg;C in the tissue culture waterbath. DMEM:F-12 supplemented with 20% FCS, 1% glutamine and + 1% penicillin &amp; streptomycin solution</td>
</tr>
<tr>
<td>Dispase (50 &mu;g/ml, equivalent to 6 units/mg) </td>
<td>&nbsp;</td>
<td>Available from MP Biomedicals, UK</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>10 &mu;g/ml 4_,6 Diamidino-2-phenylindole, dihydrochloride (DAPI).</td>
<td>&nbsp;</td>
<td>Sigma-Aldrich, UK</td>
<td>&nbsp;</td>
<td>For microscopic visualization of apoptosis and mitosis</td>
</tr>
<tr>
<td>Vectashield fluorescent mounting fluid</td>
<td>&nbsp;</td>
<td>Vector Laboratories, UK</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Fluorescent upright microscope with ultraviolet filter (we use a Nikon Eclipse E600)</td>
<td>&nbsp;</td>
<td>Nikon, UK</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Digital camera and imaging software (we use a Nikon Coolpix 995 camera; A Nikon D3 camera</td>
<td>&nbsp;</td>
<td>Nikon, UK</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>OpenLab4.0a software</td>
<td>&nbsp;</td>
<td>Improvision, UK</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Photoshop CS4</td>
<td>&nbsp;</td>
<td>Adobe</td>
<td>&nbsp;</td>
<td>&nbsp;</td>		</tbody>
		</table>
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adult and embryonic skeletal muscle microexplant culture and isolation of skeletal muscle stem cells

Cultivadas embrionárias e adultas células do músculo esquelético têm uma série de diferentes usos. O micro-dissecados técnica de explantes descritos neste capítulo é um método robusto e confiável para isolar um número relativamente grande de proliferação de células do músculo esquelético juvenil, adulto ou músculos embrionárias como fonte de células-tronco do músculo esquelético. Os autores usaram micro-dissecados culturas de explantes para analisar as características de crescimento de células musculares esqueléticas em músculos do tipo selvagem e distrófica. Cada um dos componentes do crescimento do tecido, ou seja, a sobrevivência celular, proliferação de senescência, ea diferenciação podem ser analisados ​​separadamente, utilizando os métodos descritos aqui. O efeito líquido de todos os componentes do crescimento pode ser estabelecida por meio de medir as taxas de crescimento dos explantes. O método de micro-explante pode ser usado para estabelecer culturas primárias de uma ampla gama de tipos de músculos diferentes e idades e, como descrito aqui, foi adaptado pelos autores para permitir o isolamento de embriões precursoras de músculo esquelético. Excepcionalmente, micro-explante culturas têm sido usadas para derivar clonal (origem única célula) de células-tronco do músculo esquelético (SMSC) linhas que podem ser expandidos e utilizados para in vivo o transplante. Em SMSC vivo transplantado comportar-se como funcional, de tecidos específicos, células satélites que contribuem para a regeneração do músculo esquelético de fibra, mas que também são retidos (no nicho de células satélites), como um pequeno grupo de células-tronco indiferenciadas, que podem ser re-isoladas em cultura pelo método de micro-explante.

Watch this Scientific Journal Video about Adult and Embryonic Skeletal Muscle Microexplant Culture and Isolation of Skeletal Muscle Stem Cells at JoVE.com

Adult and Embryonic Skeletal Muscle Microexplant Culture and Isolation of Skeletal Muscle Stem Cells

O micro-dissecados técnica de explantes é um método robusto e confiável para isolar proliferativa das células do músculo esquelético juvenil, adulto ou músculos embrionárias como fonte de células-tronco do músculo esquelético. Excepcionalmente, estas células têm sido clonal para produzir derivados do músculo esquelético linhas de células-tronco usado para in vivo o transplante.

Adultas e embrionárias Cultura Microexplant Músculo Esquelético e isolamento de células-tronco musculares

Cultured embryonic and adult skeletal muscle cells have a number of different uses. The micro-dissected explants technique described in this chapter is a ...

Research

JoVE Journal

Biology

Mitochondrial Isolation from Skeletal Muscle

Isolamento mitocondrial do músculo esquelético

Mitochondria are organelles controlling the life and death of the cell. They participate in key metabolic reactions, synthesize most of the ATP, and ...

Biologia

Purification of Progenitors from Skeletal Muscle

Purificação de Progenitores do músculo esquelético

Skeletal muscle contains multiple progenitor populations of distinct embryonic origins and developmental potential. Myogenic progenitors, usually residing ...

Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles

Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles

Avaliação ex vivo de Fatigabilidade Contratilidade e Alternans em músculos esqueléticos isolados

 
Described here is a method to measure contractility of isolated skeletal muscles. Parameters such as muscle force, muscle power, contractile kinetics, ...

Laser-inflicted Injury of Zebrafish Embryonic Skeletal Muscle

Laser-infligido Lesão de Zebrafish muscular esquelético embrionário

Various experimental approaches have been used in mouse to induce muscle injury with the aim to study muscle regeneration, including myotoxin injections ...

Isolation and Culture of Individual Myofibers and their Satellite Cells from Adult Skeletal Muscle

Isolamento e Cultura de miofibras individuais e suas células satélites do músculo esquelético

Muscle  regeneration in the adult is performed by resident stem cells called satellite  cells. Satellite cells are defined by  their position between the ...

Isolation, Culture, and Transplantation of Muscle Satellite Cells

Isolamento, cultura e transplante de células musculares satélite

Muscle satellite cells are a stem cell population required for postnatal skeletal muscle development and regeneration, accounting for 2-5% of sublaminal ...

Isolation of Blood-vessel-derived Multipotent Precursors from Human Skeletal Muscle

Isolamento de Blood-derivado do navio Multipotentes Precursores do músculo-esquelético humano

Since the discovery of mesenchymal stem/stromal cells (MSCs), the native identity and localization&#160;of MSCs have been obscured by their retrospective ...

Isolation and Characterization of Exosomes from Skeletal Muscle Fibroblasts

Isolamento e Caracterização de Exossomos de Fibroblastos de Músculo Esquelético

Exosomes are small extracellular vesicles released by virtually all cells and secreted in all biological fluids. Many methods have been developed for the ...

Isolation of Mitochondria from Mouse Skeletal Muscle for Respirometric Assays

Isolamento das Mitocôndrias do Músculo Esquelético do Rato para Ensaios Respirométricos

Most of the cell&#39;s energy is obtained through the degradation of glucose, fatty acids, and amino acids by different pathways that converge on the ...

Electroporation of Plasmid DNA into Mouse Skeletal Muscle

Eletroporação do DNA plasmídeo no músculo esquelético do rato

Transient gene expression modulation in murine skeletal muscle by plasmid electroporation is a useful tool for assessing normal and pathological ...