Name: deriving retinal pigment epithelium (rpe) from induced pluripotent stem (ips) cells by different sizes of embryoid bodies
Uploaded: 2015-02-04T14:00:00
Description: Watch this Scientific Journal Video about Deriving Retinal Pigment Epithelium RPE from Induced Pluripotent Stem iPS Cells by Different Sizes of Embryoid Bodies at JoVE.com

The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or as reflecting the views of the Department of the Army or the Department of Defense. This research was performed while the authors Alberto Mu&#241;iz, Ramesh R Kaini, Whitney A Greene and Jae-Hyek Choi held a National Research Council Postdoctoral Research Associateship at the USAISR. This work was supported by U.S. Army Clinical Rehabilitative Medicine Research Program (CRMRP) and Military Operational Medicine Research Program (MOMRP).

培養試薬および培養プレートの調製<ol><li>幹細胞基礎培地400 mlに5倍の無血清補充を100mlを添加することにより無フィーダー幹細胞培養培地を準備する。培地は、最大2週間と6ヶ月間、-20℃で、4℃で安定である。 </li><li>市販の胚様体（EB）形成培地にRho関連、コイルドコイル含有タンパク質キナーゼ（ROCK）阻害剤（Y-27362）の10μMの溶液を加える。 </li><li> （ダルベッコ改変イーグル培地/栄養?...

<ol>
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細胞療法のための多能性幹細胞の完全な約束を実現するためには、一貫して再現可能な方法でそれらの分化を調節することが必要である。このレポートでは、マイクロウェルプレート技術を使用してサイズ制御したEBを形成RPEに向かって分化を開始し、RPEのタンパク質と遺伝子マーカーを同定するためのプロトコルについて説明します。 インビトロ分化を同期させるために、EBの均一?...

人工多能性幹（iPS）細胞は、外因性因子1成体細胞を再プログラミングすることによって誘導される多能性幹細胞の一種である。対照的に、胚性幹細胞（ESC）、多能性幹細胞の別の型は、胚盤2-3の内部細胞塊から生成される。それらの異なる起源にもかかわらず、iPS細胞およびESCをインビトロおよび任意の細胞型4-5に分化する能力において複製するそれらの無制限の容量が同程度である。 iPS細胞のこれらの特徴は、彼らにパーソナライズされた再生医療への応用のための理想的な候補を作る。最近の研究努力は、網膜色素上皮（RPE）6-11を含む特殊な成体細胞を製造するための堅牢な分化プロトコールを開発することに焦点を当てている。 のiPS由来細胞の潜在的な臨床用途のために、その特定の細胞型に向かう分化が不可欠である。様々な方法があるその効率6-7、12-16で大きく変化したRPEに両方のESCとのiPS細胞の監督分化のために公開。我々はまだ開発または分化中の細胞/組織の運命を支配する分子事象の多くは知らない。近年では、努力は、できる限り胎生発育を模倣することができる分化プロトコルを開発する試みがなされてきた。胚盤胞段階の間に、幹細胞のコミットされていない集団の三次元微小環境で一緒にいる。そのように、様々な戦略を組み立てESC / iPS細胞を作成し、三次元でそれらを成長させるために適用した。これらの幹細胞集合体は、胚様体（EB）と呼ばれている。研究は、幹細胞のEBの分化は胚発生の初期段階を模倣し、自発的にその外面に原始内胚葉を生じ得ることを示した。 EBの開発が進むにつれてその後、3つのすべての生殖系列の分化細胞の表現型は17-18が表示されます。目erefore、EBをベース分化プロトコルは、ESC / iPS細胞のin vitroでの分化のために多くの注目を集め多能性幹細胞13からRPE生成のための良い候補であるしている。 EBは、ESC / iPS細胞からのいくつかの方法を用いて製造することができる。最初に、EBを付着コロニーを掻き非接着懸濁培養でそれらを維持することによって作製した。しかし、このアプローチは、低い再現性を引き起こすEBの不均一な集団を生じる。ハンギングドロップ細胞培養およびマイクロウェルベースの​​EB形成が非常に再現性が定義された大きさの均一なEBをを得たEB形成のための他の一般的な技術である。さらに、マイクロ技術は少ない労力で凝集体の大多数を得ることができる。 のEB内の細胞の分化は、細胞外および細胞内微小環境から形態形成の合図の多重によって調節される。月における分化とは対照的にフォーマットolayer、EBは、17を発生する細胞と細胞間シグナル伝達の複雑なアセンブリのためのプラットフォームを提供する。興味深いことに、個々のEBを作製するために使用される多能性幹細胞の数は、細胞の運命に影響を与えることが観察された。 1000セルEBは赤血球系統20に向けてプッシュされ、一方、例えば、ヒトESCの造血分化の研究では、500セルEBは骨髄系統への分化を促進したことが観察された。別の研究では、より小さなEBは、神経外胚葉分化11、17に向けて推進し、より大きなEBを、一方、内胚葉分化を支持した。 これらの過去の研究は強く個々のEBを作製するために使用されるESC / iPS細胞の数は、任意の細胞型への分化に基づいたEBに影響を与えることを示唆している。しかし、我々の知る限り、RPEに分化するために、その傾向にEBをサイズの影響を解明した電流の研究はありません。本研究の目的は、影響を特徴付けることである網膜色素上皮（のiPS-RPE）分化およびRPE系統に向かって方向付け分化したEBを作るための最適な細胞数を識別するために - 人工多能性幹（iPS）細胞へのEBの大きさ。

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			<td height="36" style="height:36px;width:239px;">Name of Material/ Equipment</td>
			<td style="width:183px;">Company</td>
			<td style="width:140px;">Catalog Number</td>
			<td style="width:161px;">Comments/Description</td>
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			<td height="21" style="height:21px;">mTeSR1 media + 5X supplement</td>
			<td>Stem Cell Technologies</td>
			<td>5850</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Y-27632 (Rock Inhibitor)</td>
			<td>Stem Cell Technologies</td>
			<td>72304</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">DMEM/F12</td>
			<td>Life Technologies</td>
			<td>11330-032</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">2-Mercaptoethanol</td>
			<td style="width:183px;">Sigma</td>
			<td style="width:140px;">M-7154</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Non essential amino acids</td>
			<td style="width:183px;">Hyclone(Fisher)</td>
			<td>SH30853.01</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Knockout serum replacement</td>
			<td style="width:183px;">Life Technologies</td>
			<td style="width:140px;">10828-028</td>
			<td></td>
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			<td height="21" style="height:21px;width:239px;">Gentamicin&#160;</td>
			<td style="width:183px;">Life Technologies</td>
			<td style="width:140px;">15750-060</td>
			<td></td>
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			<td height="21" style="height:21px;width:239px;">L-Glutamine</td>
			<td style="width:183px;">Life Technologies</td>
			<td style="width:140px;">25030-081</td>
			<td></td>
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		<tr height="21">
			<td height="21" style="height:21px;width:239px;">MEM media</td>
			<td style="width:183px;">Life Technologies</td>
			<td style="width:140px;">10370-021</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">N1 supplement</td>
			<td style="width:183px;">Sigma</td>
			<td style="width:140px;">N-6530-5ML</td>
			<td></td>
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		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Taurine</td>
			<td style="width:183px;">Sigma</td>
			<td style="width:140px;">T-8691-25G</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Hydrocortisone</td>
			<td style="width:183px;">Sigma</td>
			<td style="width:140px;">H0888-1G</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Fetal bovine serum</td>
			<td style="width:183px;">Hyclone(Fisher)</td>
			<td>SH3008803HI</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Triiodo-l-thyronine sodium&#160; salt</td>
			<td style="width:183px;">Sigma</td>
			<td style="width:140px;">T6397</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Sodium hydroxide</td>
			<td style="width:183px;">Sigma</td>
			<td style="width:140px;">S5881</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Dispase</td>
			<td style="width:183px;">Life Technologies</td>
			<td>17105-041</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Matrigel</td>
			<td style="width:183px;">BD Biosciences</td>
			<td style="width:140px;">354277</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Phosphate buffered saline</td>
			<td style="width:183px;">Hyclone(Fisher)</td>
			<td>10010-023</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Aggrewell 400 plate</td>
			<td style="width:183px;">Stem Cell Technologies</td>
			<td>27940</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">AggreWell medium</td>
			<td>Stem Cell Technologies</td>
			<td>5893</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Accutase</td>
			<td>Stem Cell Technologies</td>
			<td>7920</td>
			<td></td>
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			<td height="42" style="height:42px;width:239px;">BD Cytofix/Cytoperm Fixation/Permeabilization Kit</td>
			<td>BD Biosciences</td>
			<td>554714</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Mouse Anti-PAX6 antibody</td>
			<td colspan="2">Developmental Studies Hybridoma Bank</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Rabbit Anti- RX antibody</td>
			<td>Abcam</td>
			<td>Ab23340</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Mouse&#160; Anti-MITF antibody</td>
			<td>Thermo Scientific</td>
			<td>MS-772-P</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">Rabbit Anti-ZO-1 antibody</td>
			<td>Invitrogen</td>
			<td>40-2200</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">RNeasy plus mini kit</td>
			<td>Qiagen</td>
			<td>74134</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">PCR master mix</td>
			<td>promega</td>
			<td>M7502</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:239px;">High capacity RNA to c DNA kit</td>
			<td style="width:183px;">Life Technologies</td>
			<td>4387406</td>
			<td></td>
		</tr>
	</tbody>
</table>

deriving retinal pigment epithelium (rpe) from induced pluripotent stem (ips) cells by different sizes of embryoid bodies

Pluripotent stem cells possess the ability to proliferate indefinitely and to differentiate into almost any cell type. Additionally, the development of techniques to reprogram somatic cells into induced pluripotent stem (iPS) cells has generated interest and excitement towards the possibility of customized personal regenerative medicine. However, the efficiency of stem cell differentiation towards a desired lineage remains low. The purpose of this study is to describe a protocol to derive retinal pigment epithelium (RPE) from iPS cells (iPS-RPE) by applying a tissue engineering approach to generate homogenous populations of embryoid bodies (EBs), a common intermediate during in vitro differentiation. The protocol applies the formation of specific size of EBs using microwell plate technology. The methods for identifying protein and gene markers of RPE by immunocytochemistry and reverse-transcription polymerase chain reaction (RT-PCR) are also explained. Finally, the efficiency of differentiation in different sizes of EBs monitored by fluorescence-activated cell sorting (FACS) analysis of RPE markers is described. These techniques will facilitate the differentiation of iPS cells into RPE for future applications.

この実験では、iPS細胞を培養したEBからRPE細胞系統に分化した。制御されたサイズのEBをマイクロウェルプレートを用いて形成された。 図1 EBの形成に見られるように、マイクロウェルプレート中で均質であった。これらのEBは、次いで（ 図2）を回収し、6ウェルプレート上にプレーティングした。 RPEは、古典的な六角形の形態、色素沈着、およ?...

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Deriving Retinal Pigment Epithelium RPE from Induced Pluripotent Stem iPS Cells by Different Sizes of Embryoid Bodies

胚様体の異なるサイズによって人工多能性幹（iPS）細胞から網膜色素上皮（RPE）の導出

このレポートの目的は、胚様体の異なるサイズを使用して人工多能性幹（iPS）細胞から網膜色素上皮（RPE）を導出するためのプロトコルを記述することである。

Pluripotent stem cells possess the ability to proliferate indefinitely and to differentiate into almost any cell type. Additionally, the development of ...

Research

JoVE Journal

Developmental Biology

Deriving Retinal Pigment Epithelium (RPE) from Induced Pluripotent Stem (iPS) Cells by Different Sizes of Embryoid Bodies

Efficient Derivation of Retinal Pigment Epithelium Cells from Stem Cells

幹細胞から網膜色素上皮細胞の効率的な導出

No cure has been discovered for age-related macular degeneration  (AMD), the leading cause of vision loss in people over the age of 55. AMD is complex ...

Analysis of Retinoic Acid-induced Neural Differentiation of Mouse Embryonic Stem Cells in Two and Three-dimensional Embryoid Bodies

2および3次元の胚様体中のマウス胚性幹細胞のレチノイン酸誘発神経分化の分析

Mouse embryonic stem cells (ESCs) isolated from the inner mass of the blastocyst (typically at day E3.5), can be used as in vitro model system for ...

Differentiating Chondrocytes from Peripheral Blood-derived Human Induced Pluripotent Stem Cells

末梢血由来ヒト誘導多能性幹細胞からの軟骨細胞の分化

In this study, we used peripheral blood cells (PBCs) as seed cells to produce chondrocytes via induced pluripotent stem cells (iPSCs) in an ...

Chondrogenic Pellet Formation from Cord Blood-derived Induced Pluripotent Stem Cells

臍帯血由来誘導多能性幹細胞からの軟骨形成ペレット形成

Human articular cartilage lacks the ability to repair itself. Cartilage degeneration is thus treated not by curative but by conservative treatments. ...

Rapid, Directed Differentiation of Retinal Pigment Epithelial Cells from Human Embryonic or Induced Pluripotent Stem Cells

人間の胚または誘導多能性幹細胞からの網膜色素上皮細胞の急速な監督の分化

We describe a robust method to direct the differentiation of pluripotent stem cells into retinal pigment epithelial cells (RPE). The purpose of providing ...

Engineering Transplantation-suitable Retinal Pigment Epithelium Tissue Derived from Human Embryonic Stem Cells

ヒト胚性幹細胞に由来する移植適切な網膜色素上皮組織をエンジニア リング

Several pathological conditions of the eye affect the functionality and/or the survival of the retinal pigment epithelium (RPE). These include some forms ...

Generation of Human Primordial Germ Cell-like Cells at the Surface of Embryoid Bodies from Primed-pluripotency Induced Pluripotent Stem Cells

プライミング多能性胚様体の表面で人間の始原生殖細胞のような細胞の生成誘導多能性幹細胞

Primordial germ cells (PGCs) are common precursors of all germline cells. In mouse embryos, a founding population of ~40 PGCs are induced from pluripotent ...

Generation of 3D Skin Organoid from Cord Blood-derived Induced Pluripotent Stem Cells

臍帯血由来から 3 D 肌 Organoid の生成誘導多能性幹細胞

The skin is the body&#8217;s largest organ and has many functions. The skin acts as a physical barrier and protector of the body and regulates bodily ...

In Vitro Generation of Somite Derivatives from Human Induced Pluripotent Stem Cells

体節誘導体誘導される人間からの体外世代多能性幹細胞します。

In response to signals such as WNTs, bone morphogenetic proteins (BMPs), and sonic hedgehog (SHH) secreted from surrounding tissues, somites (SMs) give ...

Hemogenic Endothelium Differentiation from Human Pluripotent Stem Cells in A Feeder- and Xeno-free Defined Condition

フィーダーとゼノフリーの定義条件におけるヒト多能性幹細胞からの血原性内皮分化

Deriving functional hematopoietic stem and progenitor cells (HSPCs) from human pluripotent stem cells (PSCs) have been an elusive goal for autologous ...