Name: a novel culture model for human pluripotent stem cell propagation on gelatin in placenta-conditioned media
Uploaded: 2015-08-03T15:30:00
Description: Watch this Scientific Journal Video about A Novel Culture Model for Human Pluripotent Stem Cell Propagation on Gelatin in Placenta-conditioned Media at JoVE.com

作者想感谢淳哲红（医学博士，副教授，妇产科学系，医学院高丽大学）提供胎盘组织。这项工作是由来自韩国的韩国国家研究基金会（NRF），补助（R1211902）的部分资助。

伦理声明：人类胎盘的研究进行前瞻性，与机构审查委员会对人类的高丽大学（AN09085-001）研究批准。所有的实验都是在无尘无菌室设施，在韩国大学医学中心进行。实验设计，并使用hPSCs程序批准了韩国大学医学中心的机构审查委员会（AN12277-003）。 1.准备仪器，文化传媒，和菜名<ol><li>涂层的所有培养皿用0.1％明胶。高压釜的磷酸盐缓冲盐水（PBS）和钳子。下15磅psi的消?...

<ol>
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A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Culture+of+human+pluripotent+stem+cells+using+completely+defined+conditions+on+a+recombinant+E-cadherin+substratum.">Culture of human pluripotent stem cells using completely defined conditions on a recombinant E-cadherin substratum.</a> BMC Dev Biol. 10, 60 (2010).</li><li>Jin, S., Yao, H., Weber, J. L., Melkoumian, Z. K., Ye, 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+synthetic,+xeno-free+peptide+surface+for+expansion+and+directed+differentiation+of+human+induced+pluripotent+stem+cells.">A synthetic, xeno-free peptide surface for expansion and directed differentiation of human induced pluripotent stem cells.</a> PLoS One. 7 (11), e50880 (2012).</li><li>Xu, R. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Basic+FGF+and+suppression+of+BMP+signaling+sustain+undifferentiated+proliferation+of+human+ES+cells.">Basic FGF and suppression of BMP signaling sustain undifferentiated proliferation of human ES cells.</a> Nat Methods. 2 (3), 185-190 (2005).</li><li>Xu, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Basic+fibroblast+growth+factor+supports+undifferentiated+human+embryonic+stem+cell+growth+without+conditioned+medium.">Basic fibroblast growth factor supports undifferentiated human embryonic stem cell growth without conditioned medium.</a> Stem Cells. 23 (3), 315-323 (2005).</li><li>Levenstein, M. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Basic+fibroblast+growth+factor+support+of+human+embryonic+stem+cell+self-renewal.">Basic fibroblast growth factor support of human embryonic stem cell self-renewal.</a> Stem Cells. 24 (3), 568-574 (2006).</li><li>Park, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+feeder+cells+can+support+the+undifferentiated+growth+of+human+and+mouse+embryonic+stem+cells+using+their+own+basic+fibroblast+growth+factors.">Human feeder cells can support the undifferentiated growth of human and mouse embryonic stem cells using their own basic fibroblast growth factors.</a> Stem Cells Dev. 20 (11), 1901-1910 (2011).</li><li>Park, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+efficacy+of+human+placenta+as+a+source+of+the+universal+feeder+in+human+and+mouse+pluripotent+stem+cell+culture.">The efficacy of human placenta as a source of the universal feeder in human and mouse pluripotent stem cell culture.</a> Cell Reprogram. 12 (3), 315-328 (2010).</li><li>Park, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Undifferentiated+propagation+of+the+human+embryonic+stem+cell+lines,+H1+and+HSF6,+on+human+placenta-derived+feeder+cells+without+basic+fibroblast+growth+factor+supplementation.">Undifferentiated propagation of the human embryonic stem cell lines, H1 and HSF6, on human placenta-derived feeder cells without basic fibroblast growth factor supplementation.</a> Stem Cells Dev. 19 (11), 1713-1722 (2010).</li><li>Seok, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+placenta-derived+feeders+support+prolonged+undifferentiated+propagation+of+a+human+embryonic+stem+cell+line,+SNUhES3:+comparison+with+human+bone+marrow-derived+feeders.">Human placenta-derived feeders support prolonged undifferentiated propagation of a human embryonic stem cell line, SNUhES3: comparison with human bone marrow-derived feeders.</a> Stem Cells Dev. 16 (3), 421-428 (2007).</li><li>Levenstein, M. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Basic+fibroblast+growth+factor+support+of+human+embryonic+stem+cell+self-renewal.">Basic fibroblast growth factor support of human embryonic stem cell self-renewal.</a> Stem Cells. 24 (3), 568-574 (2006).</li><li>Xu, R. H., Peck, R. M., Li, D. S., Feng, X., Ludwig, T., Thomson, J. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Basic+FGF+and+suppression+of+BMP+signaling+sustain+undifferentiated+proliferation+of+human+ES+cells.">Basic FGF and suppression of BMP signaling sustain undifferentiated proliferation of human ES cells.</a> Nat Methods. 2 (3), 185-190 (2005).</li><li>Mahmood, A., Harkness, L., Schrøder, H. D., Abdallah, B. M., Kassem, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Enhanced+differentiation+of+stem+cells+mesenchymal+progenitors+by+inhibition+of+TGF-beta/activin/nodal+using+SB-431542.">Enhanced differentiation of stem cells mesenchymal progenitors by inhibition of TGF-beta/activin/nodal using SB-431542.</a> J Bone Miner Res. 25 (6), 1216-1233 (2010).</li></ol>

该模型的开发是为了成功传播hPSCs，同时保持它们的特性，在人源化无饲养培养条件不加入外源重组生长因子，例如bFGF的或胰岛素，使hPSCs的操纵在人源化的微环境。外源性bFGF补充是常见和基质如基质胶或层粘连蛋白的应用是用于无饲养培养hPSCs 14是必不可少的。 此协议是简单，易于实现。然而，有些步骤是其成功的关键。最重要的步骤是从胎盘绒毛膜细胞的无菌分?...

The goal of this protocol is the propagation of human pluripotent stem cells (hPSCs) including human embryonic stem cells (hESCs) and human induced pluripotent stem cells (iPSCs) in fully humanized ex vivo feeder-free conditions without requiring additional exogenous supplementation and synthetic substrates. To date, the development of ex vivo hPSC culture models, that enable the introduction of culture products to the clinic, has been a major concern in stem cell research. Specifically, two critical problems need to be addressed. First, a humanized ex vivo culture system for the propagation of hPSCs that obviates the risk of contamination by animal cell products is needed. Second, a feeder-free culture model is needed to facilitate easy and economic mass production of hPSCs. For therapeutic applications of hPSCs, it is necessary to identify the factors that regulate their self-renewal and differentiation.
Since Xu et al. initially reported the feasibility of using conditioned media (CM) derived from mouse embryonic fibroblasts (MEF) to grow hESCs on Matrigel1, many studies have examined optimal ex vivo propagation methods for hPSCs2-4. However, an ideal humanized ex vivo feeder-free hPSC propagation system has not been developed because current methods require additional exogenous substrates including bFGF and insulin, well-known hPSC-sustaining factors, in culture media5-7. Moreover, synthetic substrata such as Matrigel or laminin are used in all feeder-free cultures.
The rationale behind the development and use of this protocol is based on our previous studies showing that human placenta chorion cells excellently support the propagation of hPSCs without bFGF supplementation8-11. This protocol has a number of advantages including its simplicity with respect to handling and its cost-effectiveness, and it is a near-perfect humanized culture that enables hPSC propagation without exogenous synthetic substrates. The application of human placenta-derived CM (hPCCM) for hPSCs involves 3 steps. First, chorion cells are isolated from the human placenta and cultured. Second, hPCCM is produced from cultured cells. Third, hPSCs are cultured using hPCCM and their characteristics are confirmed. 
This protocol will facilitate clinical applications of hPSCs and studies of the mechanisms of hPSC proliferation and attachment. In this paper, the protocol for the successful propagation of hPSCs in hPCCM on a gelatin-coated dish is presented.

<table border="0" cellpadding="0" cellspacing="0">
	<tbody>
		<tr>
			<td>Mitomycin-C</td>
			<td>Sigma-Aldrich Corporation</td>
			<td>M4287</td>
			<td>10ug/ml</td>
		</tr>
		<tr>
			<td>Mycoplasma detection kit</td>
			<td>TaKaRa Bio Inc.</td>
			<td>#6601</td>
			<td></td>
		</tr>
		<tr>
			<td>Matrigel</td>
			<td>BD Biosciences</td>
			<td>#354277</td>
			<td></td>
		</tr>
		<tr>
			<td>mTeSR1</td>
			<td>STEMCELL Technologies Inc.</td>
			<td>#05850</td>
			<td></td>
		</tr>
		<tr>
			<td>Dispase</td>
			<td>Worthington Biochemical Corporation</td>
			<td>LS02100</td>
			<td>1mg/ml</td>
		</tr>
		<tr>
			<td>Gelatin</td>
			<td>Sigma-Aldrich Corporation</td>
			<td>G2500</td>
			<td>0.10%</td>
		</tr>
		<tr>
			<td>BM-Cyclin</td>
			<td>Roche</td>
			<td>799 050</td>
			<td>10ug/ml</td>
		</tr>
		<tr>
			<td>RNeasy mini kit&#160;</td>
			<td>Qiagen</td>
			<td>74104</td>
			<td></td>
		</tr>
		<tr>
			<td>Nano Drop Spectrophotometer</td>
			<td>Thermo Fisher Scientific Inc</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>iQ SYBR Green qPCR Master Mix&#160;</td>
			<td>Bio-Rad Laboratories</td>
			<td>#170-8882AP</td>
			<td></td>
		</tr>
		<tr>
			<td>ES Cell Characterization kit</td>
			<td>Chemicon International, Inc.,</td>
			<td>SCR001</td>
			<td></td>
		</tr>
		<tr>
			<td>Power cDNA Synthesis Kit&#160;</td>
			<td>iNtRON Biotechnology</td>
			<td>25011</td>
			<td></td>
		</tr>
		<tr>
			<td>QIAamp&#174; DNA Micro kit</td>
			<td>Qiagen</td>
			<td>56304</td>
			<td></td>
		</tr>
		<tr>
			<td>AmpF/STR&#174; Identifiler&#174; PCR Amplification kit</td>
			<td>Applied Biosystems Inc.</td>
			<td>4322288</td>
			<td></td>
		</tr>
		<tr>
			<td>Applied Biosystems&#174; 3130xl Genetic Analyzer&#160;</td>
			<td>Applied Biosystems Inc.</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

a novel culture model for human pluripotent stem cell propagation on gelatin in placenta-conditioned media

The propagation of human pluripotent stem cells (hPSCs) in conditioned medium derived from human cells in feeder-free culture conditions has been of interest. Nevertheless, an ideal humanized ex vivo feeder-free propagation method for hPSCs has not been developed; currently, additional exogenous substrates including basic fibroblast growth factor (bFGF), a master hPSC-sustaining factor, is added to all of culture media and synthetic substrata such as Matrigel or laminin are used in all feeder-free cultures. Recently, our group developed a simple and efficient protocol for the propagation of hPSCs using only conditioned media derived from the human placenta on a gelatin-coated dish without additional exogenous supplementation or synthetic substrata specific to hPSCs. This protocol has not been reported previously and might enable researchers to propagate hPSCs efficiently in humanized culture conditions. Additionally, this model obviates hPSC contamination risks by animal products such as viruses or unknown proteins. Furthermore, this system facilitates easy mass production of hPSCs using the gelatin coating, which is simple to handle, dramatically decreases the overall costs of ex vivo hPSC maintenance.

此HPSC传播方法的一个优点是，它使用了由人细胞分泌的成分。在协议A最ciritical步骤是人胎盘来源的细胞的分离和培养。这需要从HPC板绒毛的精确部分准确清扫。 图1示出了用于来自人胎盘的细胞分离的步骤。这个过程是简单的和方便的细胞的分离，并且可以很容易地在1小时内进行。如在图2中描述的，组织附着到发芽鲁棒明胶涂层盘和成纤维细胞样细胞。在传代通过胰蛋...

Watch this Scientific Journal Video about A Novel Culture Model for Human Pluripotent Stem Cell Propagation on Gelatin in Placenta-conditioned Media at JoVE.com

A Novel Culture Model for Human Pluripotent Stem Cell Propagation on Gelatin in Placenta-conditioned Media

This protocol provides a simple and efficient way to propagate human pluripotent stem cells (hPSCs) using only conditioned media derived from the human placenta in a gelatin-coated dish without additional exogenous supplementation or hPSC-specific synthetic substrata.

一种新的文化模式的人多能干明胶胎盘条件培养基细胞增殖

The propagation of human pluripotent stem cells (hPSCs) in conditioned medium derived from human cells in feeder-free culture conditions has been of ...

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