Not: steril kültür koşullarını korumak için, bu protokol tüm prosedürlerin steril laboratuar uygulamaları kullanılarak gerçekleştirilen ve laminer akış kaputu altında yürütülmelidir. Başlamadan önce, herhangi bir ortam, 37 dengelenmiş olduğundan emin ° C ve uygun gazladı. Geltrex kaplı Kültür Yemekleri hazırlanması Not: CELLstart kaplı kültür kaplarına kullanımı için Ek <ol><li> Çözülme Geltrex yavaş yavaş 2-8 (1 mL) ° C tüp ve Knockout D-MEM/F-12 99 ml 1:100 onu sulandırmak. Çözüm hafifçe karıştırın. Not: Bazı iPS hücre hatları, optimum büyüme için farklı bir Geltrex seyreltme gerekebilir. Alternatif dilüsyonları için eke bakınız. </li><li> Her kültürün çanak tüm yüzeyi Geltrex çözüm (35 mm yemek için 1 ml, 60 mm yemek için 1.5 ml) ile kaplayın. </li><li> Kurumasını önlemek ve 37 yemekleri az 1 saat inkübe Parafilm ° C ile her tabak sızıntısını önleyiniz Not: Bu noktada, 1 aya kadar 4 ° C&#39;de Geltrex kaplı kültür kaplarına saklayabilir. Geltrex kurumasını önlemek için her tabak Parafilm Seal. </li><li> Kullanmadan önce, bir laminer akış kaputu Geltrex kaplı yemekler aktarmak ve onları oda sıcaklığında (yaklaşık 1 saat) gelmesini sağlar. </li></ol> Komple nakavt SR Besleyici Ücretsiz Orta hazırlanması <ol><li> 10 mcg / ml Temel FGF çözüm, 1 ml hazırlamak için, aseptik aşağıda listelenen bileşenleri karıştırın. -20 ° C&#39;de kısım çözüm ve mağaza, 6 aya kadar. <table border="0"><tbody><tr><td> Temel FGF </td><td> 10 mikrogram </td></tr><tr><td> D-PBS </td><td> 990 mcL </td></tr><tr><td> 10% BSA </td><td> 10 mcL </td></tr></tbody></table> Not: BSA aynı konsantrasyonda HSA veya Knockout SR ile ikame edilebilir. </li><li> 50 ml 2 mg / ml Dispase çözüm hazırlamak için, aseptik aşağıda listelenen bileşenleri karıştırın. Filtre 4 çözüm ve mağaza ° C 2 haftaya kadar sterilize. <table border="0"><tbody><tr><td> Dispase </td><td> 100 mg </td></tr><tr><td> D-PBS </td><td> 50 ml </td></tr></tbody></table></li><li> 100 ml tam nakavt SR Besleyici-Free (KSR-FF) orta aseptik aşağıdaki tabloda listelenen bileşenleri bir araya hazırlamak için. <table border="1"><tbody><tr><td> Bileşen </td><td> Stok Konsantrasyon </td><td> Final Konsantrasyon </td><td> Hacim </td></tr><tr><td> Nakavt DMEM/F12 (Kat. No. 12.660-012) </td><td> - </td><td> 1X </td><td> 76.8 ml </td></tr><tr><td> GlutaMAX-I (Kat. No: 35.050-061) </td><td> 200 mm </td><td> 2 mM </td><td> 1 ml </td></tr><tr><td> Nakavt SR (Kat. no: 10.828-028) </td><td> - </td><td> % 20 </td><td> 20 ml </td></tr><tr><td> Nakavt SR-GFC (Kat. no. A10580-01) </td><td> 50X </td><td> 1X </td><td> 2 mL </td></tr><tr><td> bFGF (Kat.. PHG0024) </td><td> 10 mcg / mL </td><td> 20 ng / ml </td><td> 200 mcL </td></tr></tbody></table> Bir haftaya kadar 2-8 ° C&#39;de KSR-FF orta saklayabilir. </li><li> Sıcaklık ve gazlar için tam orta pre-değişikti hemen önce, aseptik 0.1 mM son konsantrasyon için gerekli 2 merkaptoetanol hacmi (55 mM stok konsantrasyonu) ekleyin. Örneğin, 100 ml KSR-FF orta hazırlamak için 182 mcL 2-mercaptoethanol (1:550 dilüsyon) Alternatif olarak 55 mM, 2-mercaptoethanol 1X tamamlanan orta ve 2-8 ° C&#39;de saklanan olabilir bir hafta kadar. </li></ol> KSR-FF Orta iPSCs uyarlanması <ol><li> Başlamadan önce, kaput Geltrex kaplı yemekleri oda sıcaklığında ön dengelenmesi. </li><li> Kültür MEF besleyici hücreler iPSCs% 70-80 konfluent kadar. MEF tabanlı kültür protokoller için Gibco Fare Embriyonik Fibroblast el kitabı bakın. </li&gt; <li> 37 ° C su banyosunda Dispase Öncesi sıcak gerekli hacim. Gerekli miktarlar hakkında ayrıntılı bilgi için aşağıdaki Tablo 1&#39;e bakınız. </li><li> 37 ° C su banyosunda for15 dakika KSR-FF gerekli hacmi Pre-dengelenmesi. Gerekli miktarlar hakkında ayrıntılı bilgi için aşağıdaki Tablo 1&#39;e bakınız. </li><li> Kültür yemekleri orta aspire ve uygun miktarda bir Dispase çözüm ekleyin. Bulaşıkları 3-5 dakika 37 ° C&#39;de inkübe edin. </li><li> Her kültürün gemi Dispase çözüm aspire ve D-PBS (2 ila 3 kat) MEF besleyici hücrelerin nazikçe yıkayın. </li><li> Her kültür gemi için uygun bir miktar tam nakavt SR orta ekleyin. Kapalı hücreleri kültür gemi yüzeyine hafifçe kazımak için bir hücre kazıyıcı ya da 5 ml pipet kullanın. Not: sabit iPS uyum hücre hatları için alternatif uyum protokoller için eke bakınız, </li><li> Her kültürün çanak hücre süspansiyonu ayrı 15 ml konik tüpler içine toplayın. Her bir kültür damarı tam nakavt SR orta uygun bir miktarı ile temizleyin, durulayın ve D-PBS hücre süspansiyonu içeren 15 ml konik tüpler içine orta durulama ekleyin. Tek hücre içine hücre kümeleri kırmak için değil dikkatli olun </li><li> 15 ml konik tüpler iPSCs pelet 5 dakika boyunca 200 xg&#39;de santrifüjleyin. </li><li> IPSC pelet süpernatant aspire. KSR-FF orta split oranı (Tablo 1) göre uygun bir miktarda pelletini tekrar. Küçük öbekler yüzeye iyi binmemelidir, çünkü küçük bir boyutu, hücre kümeleri kırmak değil. Not: Biz ilk 3 pasajlar iPSCs iPSC MEF Kültür Orta KSR-FF orta direkt geçişli olmuştur sonra 1:2 bölünmüş bir oranı öneririz. Normalde, 01:03 ve 01:05 arasında bir bölünme oranı uygun olan, ancak 01:02 az Pasajlanması besleyici ücretsiz bir kültürün içine adapte gerekli hücrelerinin yüksek yoğunluklu sağlar. </li><li> Geltrex kaplı yemekleri iPSCs kaplama, önce ön kaplı çanak artık Geltrex çözümü aspirat ve yavaş yavaş her kültür çanak için uygun bir miktarda hücre süspansiyonu ekleyin. Not: kaplama önce yemekleri durulama yok. </li><li> Çanağı yüzeyi boyunca hücreler dağıtmak için birkaç kez ileri geri ve yan kültür çanak hareket ettirin. Hafifçe nemlendirilmiş bir atmosfer hava 4 ila% 6 CO 2 ile 37 ° C inkübatör kültür tabağına yerleştirin. KSR-FF ile harcanan orta her gün değiştirin. </li></ol> KSR-FF kullanarak Pasajlanması insan iPS hücreleri <ol start="13"><li> Mikroskop altında hücrelerin% 70-80 konfluent ve pasajlandı olmaya hazır olduğunu doğrulamak için tam KSR-FF büyüyen insan iPSCs uyun. Şekil 1 bakın. Not: koloniler çok yoğun veya çok büyük hale gelirse, artan farklılaşması oluşur. </li><li> Kes ve kültür Pasajlanması önce herhangi bir farklılaşmış iPSC koloniler kaldırmak. </li><li> 37 ° C su banyosunda Dispase Öncesi sıcak gerekli hacim. Gerekli miktarlar hakkında ayrıntılı bilgi için aşağıdaki Tablo 1&#39;e bakınız. </li><li> 37 ° C su banyosunda for15 dakika KSR-FF gerekli hacmi Pre-dengelenmesi. Gerekli miktarlar hakkında ayrıntılı bilgi için aşağıdaki Tablo 1&#39;e bakınız. </li><li> Bir pipet kullanarak kültür damarı harcanan orta aspire ve hücrelerin D-PBS ile iki kez yıkayın. </li><li> Yavaşça kültür damarı (örneğin, 60 mm kültür çanak başına Dispase çözüm 1 ml) önceden ısıtılmış Dispase çözüm ekleyin. Tüm hücre yüzeyinde kat Swirl kültür damarı. </li><li> Kültür damarı 3 dakika boyunca 37 ° C&#39;de inkübe edin. </li><li> Inkübatör geminin çıkarın, Dispase çözüm aspirat ve D-PBS ile hücrelerin nazikçe yıkayın. </li><li> Hücrelerin, hücre kazıyıcı kullanarak kültürü çanak yüzeyinden hafifçe kazıyın ve 15 mL steril bir santrifüj tüpüne hücreleri aktarmak. </li><li> Nazikçe müstakil olmayan herhangi bir hücre &quot;püskürtme&quot;, KSR-FF ile iki kez kültür çanak durulayın Havuz, 15 mL tüp hücreleri orta durulayın. </li><li> Tüp, oda sıcaklığında pelet hücreleri 5 dakika boyunca 200 xg&#39;de santrifüjleyin . </li><li> Dikkatle hücre pelletini bozmadan süpernatantı aspirat ve atın. </li><li> Yavaşça tüp tüp alttan tamamen hücre pelletini çıkarmak için hafifçe vurun. </li><li> 5ml serolojik bir pipet kullanarak ön dengelenmiş KSR-FF hücreler yavaşça tekrar süspansiyon haline getirin. Çiğnemek değil. Not: hafifçe zarar vermemek için kuvvet kullanmadan hücreleri tekrar süspansiyon adım kritik. </li><li> Istenen bölünmüş oranında taze bir 60 mm Geltrex kaplı çanak hücreleri transferi ve yüzeyi boyunca hücreler dağıtmak için birkaç kez ileri geri ve yan kültür çanak taşımak. </li><li> Nemlendirilmiş bir atmosferi ile 37 ° C inkübatör kültür tabağına yerleştirin% 4 ila 6 hava CO 2. </li><li> Ertesi gün hafifçe hücre enkaz kaldırmak için harcanan orta KSR-FF ile değiştirin. Bundan sonra günlük harcanan orta değiştirin. IPS hücreleri günlük olarak (yaklaşık olarak her 4-5 gün) geçişi dikkate alınmalıdır. Pasajlanması hücrelerin% 70-80 izdiham ulaştığınızda tavsiye edilir. IPS hücre dondurulması ve eritme için, &quot;Komple nakavt Serum Yedek Besleyici-Alerjik Orta kullanarak dondurularak ve İnsan iPS Hücreler kurtarma&quot; başlıklı protokol bakın. </li></ol> Beklenen Sonuçlar <img src="/files/ftp_upload/2236/2236fig1.jpg" alt="Şekil 1" /> Şekil 1. Aşağıdaki faz kontrast görüntü tam nakavt Serum Yedek Besleyici Ücretsiz orta kullanarak Geltrex kaplı kültür kaplarına yetişen iPSCs gösterir. IPSCs, büyük bir çekirdek ve kıt sitoplazma ile karakterize hESC, morfolojisi benzer sergiler. (40x büyütme) <table border="1"><tbody><tr><td> Bileşen </td><td> 35mm Bulaşık </td><td> 60mm Bulaşık </td><td> 100mm Bulaşık </td></tr><tr valign="top"><td> Komple nakavt SR orta </td><td> 2 mL </td><td> 4 mL </td><td> 10 ml </td></tr><tr valign="top"><td> Geltrex Çözüm </td><td> 1 ml </td><td> 1,5 mL </td><td> 4-5 ml </td></tr><tr valign="top"><td> Dispase </td><td> 0,5 mL </td><td> 1 ml </td><td> 3-4 ml </td></tr><tr valign="top"><td> Durulama için D-PBS </td><td> 2 mL </td><td> 4 mL </td><td> 10 ml </td></tr></tbody></table> Tablo 1. Önerilen Hacimleri <a href="http://www.jove.com/files/ftp_upload/2236/2236appendix.pdf">Ek görmek için buraya tıklayınız</a> .

<ol>
	<li>Takahashi, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Induction+of+pluripotent+stem+cells+from+mouse+embryonic+and+adult+fibroblast+cultures+by+defined+factors.">Induction of pluripotent stem cells from mouse embryonic and adult fibroblast cultures by defined factors.</a> Cell. 126, 663-676 (2006).</li><li>Takahashi, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Induction+of+pluripotent+stem+cells+from+adult+human+fibroblasts+by+defined+factors.">Induction of pluripotent stem cells from adult human fibroblasts by defined factors.</a> Cell. 131, 861-872 (2007).</li><li>Yu, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Induced+pluripotent+stem+cell+lines+derived+from+human+somatic+cells.">Induced pluripotent stem cell lines derived from human somatic cells.</a> Science. 318, 1917-1920 (2007).</li><li>Maherali, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Guidelines+and+techniques+for+the+generation+of+induced+pluripotent+stem+cells.">Guidelines and techniques for the generation of induced pluripotent stem cells.</a> Cell Stem Cell. 3, 595-605 (2008).</li><li>Li, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Generation+of+rat+and+human+induced+pluripotent+stem+cells+by+combining+genetic+reprogramming+and+chemical+inhibitors.">Generation of rat and human induced pluripotent stem cells by combining genetic reprogramming and chemical inhibitors.</a> Cell Stem Cell. 4, 16-19 (2009).</li><li>Liao, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Generation+of+induced+pluripotent+stem+cell+lines+from+adult+rat+cells.">Generation of induced pluripotent stem cell lines from adult rat cells.</a> Cell Stem Cell. 4, 11-15 (2009).</li><li>Dimos, J. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Induced+pluripotent+stem+cells+generated+from+patients+with+ALS+can+be+differentiated+into+motor+neurons.">Induced pluripotent stem cells generated from patients with ALS can be differentiated into motor neurons.</a> Science. 321, 1218-1221 (2008).</li><li>Aasen, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+and+rapid+generation+of+induced+pluripotent+stem+cells+from+human+keratinocytes.">Efficient and rapid generation of induced pluripotent stem cells from human keratinocytes.</a> Nat Biotechnli. 26, 1276-1284 (2008).</li><li>Park, I. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Generation+of+human-induced+pluripotent+stem+cells.">Generation of human-induced pluripotent stem cells.</a> Nat Protoc. 3, 1180-1186 (2008).</li></ol>

Bu makalenin yazarları, bu yazıda kullanılan reaktifler ve aletleri üreten Life Teknolojileri tarafından istihdam edilmektedir.

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		<thead>
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		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>Knockout DMEM/F12</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>Cat. no. 12660-012</td>
<td>Note: see appendix for the use of alternative DMEM products</td>
</tr>
<tr>
<td>GlutaMAX-I</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>Cat. No. 35050-061</td>
<td>&nbsp;</td>
<tr>
<td>KnockOut Serum Replacement</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>KnockOut SR, Cat. no. 10828-028</td>
<td>&nbsp;</td>
<tr>
<td>KnockOut Serum Replacement Growth Factor Cocktail</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>KnockOut SR-GFC, Cat. no. A10580-01</td>
<td>&nbsp;</td>
<tr>
<td>FGF-basic, human recombinant protein, 10 &mu;g</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>bFGF, Cat. no. PHG0024</td>
<td>Note: see appendix for alternative bFGF pack sizes.</td>
</tr>
<tr>
<td>2-Mercaptoethanol</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>Cat. no. 21985-023</td>
<td>&nbsp;</td>
<tr>
<td>Dispase</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>Cat. no. 17105-041</td>
<td>Note: see appendix for alternative passaging methods.</td>
</tr>
<tr>
<td>Geltrex hESC-Qualified Reduced Growth Factor Basement Matrix, 1 mL</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>Cat. no. A10480-01</td>
<td>&nbsp;</td>
<tr>
<td>Dulbecco&#x2019;s Phosphate Buffered Saline (D-PBS) without calcium and magnesium </td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>Cat. no. 14190-144</td>
<td>&nbsp;</td>
<tr>
<td>Sterile Tissue Culture Hood</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Incubator set at 37&deg;C</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Pipette-Aid</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Water Bath set at 37&deg;C</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Sterile serological pipettes (5 mL, 10 mL)</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Centrifuge</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>15 mL centrifuge tubes</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>60mm Tissue Culture treated dishes</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>		</tbody>
		</table>
		</div>

feeder-free adaptation, culture and passaging of human ips cells using complete knockout serum replacement feeder-free medium

2006 yılında, insan ve fare fibroblastlar dikkat çekici embriyonik kök hücrelere benzer nitelikleri ile 1-3 iPS hücreleri üretmek yeniden olabilir keşif pluripotent hücrelerin hücre tedavisi, ilaç keşfi ve temel araştırmalar için değerli bir yeni kaynak yaratmıştır . Gibco medya ve reaktifler yıllardır pluripotent kök hücre araştırmaları ön planda olmuştur. DMEM Nakavt Nakavt Serum Değiştirme ile desteklenmiş, embriyonik kök hücre büyümesi ve şimdi iPS hücre kültürü 3-9 için tercih edilen medya . Bu altın standart medya sistemi artık Nakavt SR Büyüme Faktörü Kokteyli ilavesi ile besleyici ücretsiz kültür kullanılabilir. Geleneksel insan ES ve iPS hücre kültürü yöntemleri, fare veya insan fibroblast besleyici katmanları veya besleyici klimalı ortamı gerektirir. Bu kültür yöntemleri ölçekli, emek-yoğun, sert ve tanımlanmamış durumlar nedeniyle farklılaşmamış kalça hücreleri korumak için zordur. Invitrogen Nakavt SR hala korurken, besleyici-ücretsiz geçiş kalça hücre kültürlerinde kolaylıkla izin Nakavt SR Büyüme Faktörü Kokteyl geliştirdi.

Watch this Scientific Journal Video about Feeder-Free Adaptation, Culture and Passaging of Human IPS Cells using Complete KnockOut Serum Replacement Feeder-Free Medium at JoVE.com

Feeder-Free Adaptation, Culture and Passaging of Human IPS Cells using Complete KnockOut Serum Replacement Feeder-Free Medium

Aşağıdaki protokolü tam nakavt Serum Yedek Besleyici Ücretsiz orta (KSR-FF) kullanarak besleyici ücretsiz kültür, insan kaynaklı Pluripotent Kök (IPS) Hücreler uyarlanması için talimat sağlar. Bir kez, adapte sürekli bakım için talimatlar ayrıca verilmiştir.

İnsan IPS Hücreler Komple nakavt Serum Yedek Besleyici-Alerjik Orta kullanarak Besleyici Adaptasyon, Kültür ve Pasajlanması

The discovery in 2006 that human and mouse fibroblasts could be reprogrammed to generate iPS cells 1-3 with qualities remarkably similar to embryonic stem ...

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Video: Feeder-Free Adaptation, Culture and Passaging of Human IPS Cells using Complete KnockOut Serum Replacement Feeder-Free Medium

Passaging HuES Human Embryonic Stem Cell-lines with Trypsin.

In this video we demonstrate how our lab routinely passages HuES human embryonic stem cell lines with trypsin.  Human embryonic stem cells are artifacts of cell culture, and tend to acquire karyotypic abnormalities with high population doublings.  Proper passaging is essential for maintaining a healthy, undifferentiated, karyotypically normal HuES human embryonic stem cell culture.  First, an expanding culture is washed in PBS to remove residual media and cell debris, then cells are overlaid with a minimal volume of warm 0.05% Trypsin-EDTA.  Trypsin is left on the cells for up to five minutes, then cells are gently dislodged with a 2mL serological pipette.  The cell suspension is collected and mixed with a large volume of HuES media, then cells are collected by gentle centrifugation.  The inactivated trypsin media mixture is removed, and cells resuspended in pre-warmed HuES media.  An appropriate split ratio is calculated (generally 1:10 to 1:20), and cells re-plated onto a 1-2 day old plate containing a monolayer of irradiated mouse embryonic fibroblast feeder cells.  The newly seeded HuES culture plate is left undisturbed for 48 hrs, then media is changed every day thereafter.  It is important not to trpsinize down to a single cell suspension, as this increases the risk of introducing karyotypic abnormalities.

In this video we demonstrate how our lab routinely passages HuES human embryonic stem cell lines with trypsin. Brought to you by JoVE.

Tripsin ile Pasajlanması tonlar İnsan Embriyonik Kök Hücre hatları

In this video we demonstrate how our lab routinely passages HuES human embryonic stem cell lines with trypsin.  Human embryonic stem cells are artifacts ...

Biyoloji

Human ES cells: Starting Culture from Frozen Cells

Here we demonstrate how our lab begins a HuES human embryonic stem cell line culture from a frozen stock.  First, a one to two day old ten cm plate of  approximately one (to two) million irradiated mouse embryonic fibroblast feeder cells is rinsed with HuES media to remove residual serum and cell debris, and then HuES media added and left to equilibrate in the cell culture incubator.  A frozen vial of cells from long term liquid nitrogen storage or a -80C freezer is sourced and quickly submerged in a 37C water bath for quick thawing.  Cells in freezing media are then removed from the vial and placed in a large volume of HuES media.  The large volume of HuES media facilitates removal of excess serum and DMSO, which can cause HuES human embryonic stem cells to differentiate.  Cells are gently spun out of suspension, and then re-suspended in a small volume of fresh HuES media that is then used to seed the MEF plate.  It is considered important to seed the MEF plate by gently adding the HuES cells in a drop wise fashion to evenly disperse them throughout the plate.  The newly established HuES culture plate is returned to the incubator for 48 hrs before media is replaced, then is fed every 24 hours thereafter.

Here we demonstrate how our lab begins a HuES human embryonic stem cell line culture from a frozen stock.

Donmuş Hücreler itibaren Kültür: İnsan Embriyonik kök hücrelerin

Here we demonstrate how our lab begins a HuES human embryonic stem cell line culture from a frozen stock.  First, a one to two day old ten cm plate of  ...

Passaging Human Neural Stem Cells

The ability to manipulate human neural stem/precursor cells (hNSPCs) in vitro provides a means to investigate their utility as cell transplants for therapeutic purposes as well as to explore many fundamental processes of human neural development and pathology.  This protocol presents a simple method of culturing and passaging hNSPCs in hopes of standardizing this technique and increasing reproducibility of human stem cell research.  The hNSPCs we use were isolated from cadaveric postnatal brain cortices by the National Human Neural Stem Cell Resource and grown as adherent cultures on flasks coated with fibronectin (Palmer et al., 2001; Schwartz et al., 2003).  We culture our hNSPCs in a DMEM:F12 serum-free media supplemented with EGF, FGF, and PDGF and passage them 1:2 approximately every seven days.  Using these conditions, the majority of the cells in the culture maintain a bipolar morphology and express markers of undifferentiated neural stem cells (such as nestin and sox2).

The ability to manipulate human neural stem/precursor cells (hNSPCs) in vitro allows to investigate their utility as cell transplants for therapeutic purposes and to explore human neural development. This protocol presents a method of culturing and passaging hNSPCs in hopes of increasing reproducibility of human stem cell research.

İnsan Nöral Kök Hücreler Pasajlanması

The ability to manipulate human neural stem/precursor cells (hNSPCs) in vitro provides a means to investigate their utility as cell transplants for ...

Culture and Maintenance of Human Embryonic Stem Cells  

Human embryonic stem (hES) cells must be monitored and cared for in order to maintain healthy, undifferentiated cultures. At minimum, the cultures must be  fed  every day by performing a complete medium change to replenish lost nutrients and to keep the cultures free of unwanted differentiation factors. Although a small amount of differentiation is normal and expected in stem cell cultures, the culture should be routinely cleaned up by manually removing, or "picking" differentiated areas. Identifying and removing excess differentiation from hES cell cultures are essential techniques in the maintenance of a healthy population of cells.

Culture and Maintenance of Human Embryonic Stem Cells

This protocol demonstrates how to maintain healthy, undifferentiated human embryonic stem (ES) cells.

İnsan Embriyonik Kök Hücre Kültürü ve Bakım

Human embryonic stem (hES) cells must be monitored and cared for in order to maintain healthy, undifferentiated cultures. At minimum, the cultures must be ...

Cryopreserving and Recovering of Human iPS Cells using Complete KnockOut Serum Replacement Feeder-Free Medium

The discovery in 2006 that human and mouse fibroblasts could be reprogrammed to generate iPS cells 1-3 with qualities remarkably similar to embryonic stem cells has created a valuable new source of pluripotent cells for drug discovery, cell therapy, and basic research.
GIBCO media and reagents have been at the forefront of pluripotent stem cell research for years. Knockout DMEM supplemented with Knockout Serum Replacement is the media of choice for embryonic stem cell growth and now iPS cell culture 3-9. This gold standard media system can now be used for feeder-free culture with the addition of Knockout SR Growth Factor Cocktail.
Traditional human ES and iPS cell culture methods require the use of mouse or human fibroblast feeder layers, or feeder-conditioned medium. These culture methods are labor-intensive, hard to scale and it is difficult to maintain hiPS cells undifferentiated due to the undefined conditions. Invitrogen has developed Knockout SR Growth Factor Cocktail to allow you to easily transition your hiPS and hES cell cultures to feeder-free while still maintaining your use of Knockout SR.

This protocol describes the detailed procedure for cryopreserving human iPS cells in KnockOut SR cryopreservation medium and recovering these cells in complete KnockOut SR Feeder Free (KSR-FF) medium or feeder-based KnockOut SR medium.

İnsan iPS hücreleri dondurularak ve kurtarma Tam nakavt Serum Yedek Besleyici-Alerjik Orta

Generation of Human Cardiomyocytes: A Differentiation Protocol from Feeder-free Human Induced Pluripotent Stem Cells

In order to investigate the events driving heart development and to determine the molecular mechanisms leading to myocardial diseases in humans, it is essential first to generate functional human cardiomyocytes (CMs). The use of these cells in drug discovery and toxicology studies would also be highly beneficial, allowing new pharmacological molecules for the treatment of cardiac disorders to be validated pre-clinically on cells of human origin. Of the possible sources of CMs, induced pluripotent stem (iPS) cells are among the most promising, as they can be derived directly from readily accessible patient tissue and possess an intrinsic capacity to give rise to all cell types of the body 1. Several methods have been proposed for differentiating iPS cells into CMs, ranging from the classical embryoid bodies (EBs) aggregation approach to chemically defined protocols 2,3. In this article we propose an EBs-based protocol and show how this method can be employed to efficiently generate functional CM-like cells from feeder-free iPS cells.

Pluripotent stem cells, either embryonic or induced pluripotent stem (iPS) cells, constitute a valuable source of human differentiated cells, including cardiomyocytes. Here, we will focus on cardiac induction of iPS cells, showing how to use them to obtain functional human cardiomyocytes through an embryoid bodies-based protocol.

İnsan kardiyomiyositleri Üretimi: Besleyici-ücretsiz İnsan Bağlı Pluripotent Kök Hücre A Farklılaşma Protokolü

In order to investigate the events driving heart development and to determine the molecular mechanisms leading to myocardial diseases in humans, it is ...

Isolation of Small Noncoding RNAs from Human Serum

The analysis of RNA and its expression is a common feature in many laboratories. Of significance is the emergence of small RNAs like microRNAs, which are found in mammalian cells. These small RNAs are potent gene regulators controlling vital pathways such as growth, development and death and much interest has been directed at their expression in bodily fluids. This is due to their dysregulation in human diseases such as cancer and their potential application as serum biomarkers. However, the analysis of miRNA expression in serum may be problematic. In most cases the amount of serum is limiting and serum contains low amounts of total RNA, of which small RNAs only constitute 0.4-0.5%1. Thus the isolation of sufficient amounts of quality RNA from serum is a major challenge to researchers today. In this technical paper, we demonstrate a method which uses only 400 &#181;l of human serum to obtain sufficient RNA for either DNA arrays or qPCR analysis. The advantages of this method are its simplicity and ability to yield high quality RNA. It requires no specialized columns for purification of small RNAs and utilizes general reagents and hardware found in common laboratories. Our method utilizes a Phase Lock Gel to eliminate phenol contamination while at the same time yielding high quality RNA. We also introduce an additional step to further remove all contaminants during the isolation step. This protocol is very effective in isolating yields of total RNA of up to 100 ng/&#181;l from serum but can also be adapted for other biological tissues.

This protocol describes a method for extracting small RNAs from human serum. We have used this method to isolate microRNAs from cancer serum for use in DNA arrays and also singleplex quantitative PCR. The protocol utilizes phenol and guanidinium thiocyanate reagents with modifications to yield high quality RNA.

Insan serumundan küçük kodlayıcı olmayan RNA&#39;lar izolasyonu

The analysis of RNA and its expression is a common feature in many laboratories. Of significance is the emergence of small RNAs like microRNAs, which are ...

MicroRNA Expression Profiles of Human iPS Cells, Retinal Pigment Epithelium Derived From iPS, and Fetal Retinal Pigment Epithelium

The objective of this report is to describe the protocols for comparing the microRNA (miRNA) profiles of human induced-pluripotent stem (iPS) cells, retinal pigment epithelium (RPE) derived from human iPS cells (iPS-RPE), and fetal RPE. The protocols include collection of RNA for analysis by microarray, and the analysis of microarray data to identify miRNAs that are differentially expressed among three cell types. The methods for culture of iPS cells and fetal RPE are explained. The protocol used for differentiation of RPE from human iPS is also described. The RNA extraction technique we describe was selected to allow maximal recovery of very small RNA for use in a miRNA microarray. Finally, cellular pathway and network analysis of microarray data is explained. These techniques will facilitate the comparison of the miRNA profiles of three different cell types.

The microRNA (miRNA) profiles of human induced-pluripotent stem (iPS) cells, retinal pigment epithelium (RPE) derived from human induced-pluripotent stem (iPS) cells (iPS-RPE), and fetal RPE, were compared.

İnsan iPS Hücreleri MicroRNA İfade Profilleri, iPS Kaynaklanan Retina pigment epiteli ve Fetal Retina pigment epiteli

The objective of this report is to describe the protocols for comparing the microRNA (miRNA) profiles of human induced-pluripotent stem (iPS) cells, ...

Efficient iPS Cell Generation from Blood Using Episomes and HDAC Inhibitors

This manuscript illustrates a protocol for efficiently creating integration-free human induced pluripotent stem cells (iPSCs) from peripheral blood using episomal plasmids and histone deacetylase (HDAC) inhibitors. The advantages of this approach include: (1) the use of a minimal amount of peripheral blood as a source material; (2) nonintegrating reprogramming vectors; (3) a cost effective method for generating vector free iPSCs; (4) a single transfection; and (5) the use of small molecules to facilitate epigenetic reprogramming. Briefly, peripheral blood mononuclear cells (PBMCs) are isolated from routine phlebotomy samples and then cultured in defined growth factors to yield a highly proliferative erythrocyte progenitor cell population that is remarkably amenable to reprogramming. Nonintegrating, nontransmissible episomal plasmids expressing OCT4, SOX2, KLF4, MYCL, LIN28A, and a p53 short hairpin (sh)RNA are introduced into the derived erythroblasts via a single nucleofection. Cotransfection of an episome that expresses enhanced green fluorescent protein (eGFP) allows for easy identification of transfected cells. A separate replication-deficient plasmid expressing Epstein-Barr nuclear antigen 1 (EBNA1) is also added to the reaction mixture for increased expression of episomal proteins. Transfected cells are then plated onto a layer of irradiated mouse embryonic fibroblasts (iMEFs) for continued reprogramming. As soon as iPSC-like colonies appear at about twelve days after nucleofection, HDAC inhibitors are added to the medium to facilitate epigenetic remodeling. We have found that the inclusion of HDAC inhibitors routinely increases the generation of fully reprogrammed iPSC colonies by 2 fold. Once iPSC colonies exhibit typical human embryonic stem cell (hESC) morphology, they are gently transferred to individual iMEF-coated tissue culture plates for continued growth and expansion.

Here we describe a protocol for generating human induced pluripotent stem cells from peripheral blood using an episome based reprogramming strategy and histone deacetylase inhibitors.

Epizomlar ve HDAC inhibitörleri kullanarak Blood Verimli iPS Hücre Üretimi

This manuscript illustrates a protocol for efficiently creating integration-free human induced pluripotent stem cells (iPSCs) from peripheral blood using ...

Comparative Analysis of Human Growth Hormone in Serum Using SPRi, Nano-SPRi and ELISA Assays

Sensitive and selective methods for the detection of human growth hormone (hGH) over a wide range of concentrations (high levels of 50-100 ng ml&#8722;1 and minimum levels of 0.03 ng ml&#8722;1) in circulating blood are essential as variable levels may indicate altered physiology. For example, growth disorders occurring in childhood can be diagnosed by measuring levels of hGH in blood. Also, the misuse of recombinant hGH in sports not only poses an ethical issue it also presents serious health threats to the abuser. One popular strategy for measuring hGH misuse, relies on the detection of the ratio of 22 kDa hGH to total hGH, as non-22 kDa endogenous levels drop after exogenous recombinant hGH (rhGH) administration. Surface plasmon resonance imaging (SPRi) is an analytical tool that allows direct (label-free) monitoring and visualization of biomolecular interactions by recording changes of the refractive index adjacent to the sensor surface in real time. In contrast, the most frequently used colorimetric method, enzyme-linked immunosorbent assay (ELISA) uses enzyme labeled detection antibodies to indirectly measure analyte concentration after the addition of a substrate that induces a color change. To increase detection sensitivity, amplified SPRi uses a sandwich assay format and near infrared quantum dots (QDs) to increase signal strength. After direct SPRi detection of recombinant rhGH in spiked human serum, the SPRi signal is amplified by the sequential injection of detection antibody coated with near-infrared QDs (Nano-SPRi). In this study, the diagnostic potential of direct and amplified SPRi was assessed for measuring rhGH spiked in human serum and compared directly with the capabilities of a commercially available ELISA kit.

The proposed work assesses the diagnostic potential of direct and amplified surface plasmon resonance imaging (SPRi) assays, particularly for the detection of recombinant human growth hormone in spiked human serum, by comparing SPRi results directly with commercially available enzyme-linked immunosorbent assay (ELISA) kit.

Spri, Nano-Spri ELISA Tahliller Kullanma Serum İnsan Büyüme Hormonu Karşılaştırmalı Analizi

Sensitive and selective methods for the detection of human growth hormone (hGH) over a wide range of concentrations (high levels of 50-100 ng ml&#8722;1 ...