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多層の表皮の完全な再建のためのヒト胚性幹細胞の誘導体:臨床前試験
Hind Guenou1, Xavier Nissan, Fernando Larcher
1INSERM/UEVE U-861, I-STEM, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic diseases, Evry Cedex, France.
Lancet (London, England)
|November 26, 2009
まとめ
人間の胚性幹細胞 (hESC) は,機能的な基礎ケラチノ細胞に微分化することができる. これらの細胞は多層の表皮を形成し,自動移植を待っている火傷患者のために,潜在的に一時的な皮膚の代替品を提供することができます.
科学分野:
- 再生医学は,再生医療である.
- 幹細胞生物学 幹細胞生物学
- 皮膚科 皮膚科について
背景:
- 重度の火傷に対する細胞治療は,インビトロ培養の自己性表皮に依存しています.
- 現在の方法は,ケラチノサイト培養に必要な時間によって制限されています.
- 人間の胚性幹細胞 (hESCs) は,ケラチノ細胞の潜在的な代替源を提供している.
研究 の 目的:
- 暫定的な皮膚代用品としてのhESC由来ケラチノサイト (K-hESCs) の可能性を調査する.
- K-hESCsが多層の表皮を形成する能力を評価する.
- 人体表皮の構造におけるK-hESCの機能能力を in vitroおよびin vivoで評価する.
主な方法:
- hESCは,骨形態遺伝タンパク質4とアスコルビック酸で40日間培養されました.
- 分子特徴付けには,定量的PCR,フローサイトメトリ,免疫細胞化学が含まれていました.
- K-hESCは人工マトリックスに種を蒔き,免疫欠陥マウスに移植された.
主要な成果:
- hESCsは,特徴的な遺伝子発現を持つ基底ケラチノ細胞の均質な集団に微分化しました.
- K-hESCsは,in vitroで多層の表皮を形成し,重要な表皮分化マーカーを発現します.
- 移植されたK-hESC由来の表皮は,12週間後に成熟したヒトの皮膚構造を示した.
結論:
- hESCは,完全に機能する基礎ケラチノ細胞に微分化することができます.
- これらのK-hESCは,多層の表皮を構成することができます.
- このアプローチは,火傷患者のために貴重な一時的な皮膚の代替品を提供することができます.
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