JP5660572B2 - 分化誘導培地用添加剤およびその利用 - Google Patents
分化誘導培地用添加剤およびその利用 Download PDFInfo
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- JP5660572B2 JP5660572B2 JP2010537672A JP2010537672A JP5660572B2 JP 5660572 B2 JP5660572 B2 JP 5660572B2 JP 2010537672 A JP2010537672 A JP 2010537672A JP 2010537672 A JP2010537672 A JP 2010537672A JP 5660572 B2 JP5660572 B2 JP 5660572B2
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Description
本発明に係る、幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するための分化誘導培地用添加剤(以下、単に「本発明に係る分化誘導培地用添加剤」という)は、EGF、FGF、およびPDGFからなる群より選択される1以上の増殖因子と、デキサメタゾンと、β−グリセロリン酸とを少なくとも含有する。
本発明に係る、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するための培養培地(以下、単に「本発明に係る培養培地」という)は、本発明に係る分化誘導培地用添加剤を構成する成分および基礎培地を含有し、血清を含まない。当該成分とは、〔1.〕で説明した各成分を指す。すなわち、本発明に係る培養培地は、EGF、FGF、およびPDGFからなる群より選択される1以上の増殖因子と、デキサメタゾンと、β−グリセロリン酸とを少なくとも含有する。
本発明に係る幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するための培養方法(以下、単に「本発明の培養方法」ともいう)は、本発明に係る培養培地中で、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を分化培養する工程を包含する。
本発明に係る幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するためのキット(以下、単に「キット」という)は、本発明に係る分化誘導培地用添加剤を構成する成分を備えている。また、さらに基礎培地を備えていてもよい。
本発明に係る骨芽細胞は、本発明に係る幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するための培養方法によって生産される。本発明に係る幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するための培養方法については、〔3.〕で説明したとおりであるので省略する。
本発明の実施例は、幹細胞として間葉系幹細胞を用いて行った。全ての細胞の培養は、5%CO2存在下のCO2インキュベータ内にて37℃の条件下において行った。
本発明の実施例において、間葉系幹細胞の増殖培養に用いた培地(無血清増殖培養培地)をSTK2培地と称する。STK2培地は、基礎培地としてのDMEM(Sigma製:D6046)/MCDB201=1:1にFGF−2、デキサメタゾン、ヒトインシュリン組み替え体、トランスフェリン、セレネート、ウシ血清アルブミン(BSA)、脂質濃縮物(Chemically defined lipid concentrate)、大豆レシチン、コレステロール、DL−α−トコフェロールアセテート、HGF、TGF−β3、PDGF−BB、EGF、L−アスコルビン酸2-リン酸セスキマグネシウム塩、フォスファチジルコリン、フォスファチジン酸塩、塩化リチウム、還元型L−グルタチオン、Pluronic F−68、Tween 80を添加した無血清培地である。
本発明の実施例において、骨芽細胞の分化誘導に用いた培地をSTK0培地と称する。STK0培地は、基礎培地としてのα−MEM(Sigma製:M4526)/MCDB201=1:1にFGF−2、デキサメタゾン、ヒトインシュリン組み替え体、トランスフェリン、セレネート、ウシ血清アルブミン(BSA)、脂質濃縮物(Chemically defined lipid concentrate)、大豆レシチン、コレステロール、DL−α−トコフェロールアセテート、HGF、TGF−β3、PDGF−BB、EGF、L−アスコルビン酸2-リン酸セスキマグネシウム塩、フォスファチジルコリン、フォスファチジン酸塩、塩化リチウム、還元型L−グルタチオン、Pluronic F−68、Tween 80を添加した無血清培地である。
本発明の実施例において、骨芽細胞への分化の評価は、分化誘導後の細胞をアリザリンレッド(Wako製、型番:011−01192)で染色することによって行った。アリザリンレッドの染色方法は、その取り扱い説明書の方法に従って行った。
間葉系幹細胞としては、ヒト腸骨骨髄由来の間葉系幹細胞(Bio−Whittaker社(Walkersville,MD)より購入)3株(以下、A株、B株、C株と表記する)を用いた。尚、A株は、5回継代したものを用い、B株およびC株は、4回継代したものを用いた。上記間葉系幹細胞の培養は、10%FBS含有DMEMを用い、培地を入れた6穴マイクロプレートに、上記間葉系幹細胞を5000個/cm2の密度で播種した。細胞培養期間中、培地は2日または3日毎に交換した。
間葉系幹細胞としては、ヒト腸骨骨髄由来の間葉系幹細胞(Bio−Whittaker社(Walkersville,MD)より購入)5株(以下、F株、G株、H株、I株、J株と表記する)を用いた。尚、F株、H株、およびI株は、5回継代したものを用い、G株およびJ株は、4回継代したものを用いた。上記間葉系幹細胞の増殖培養には、10%FBS含有DMEMを用い、培地を入れた6穴マイクロプレートに、上記間葉系幹細胞を5000個/cm2の密度で播種した。細胞培養期間中、培地は2日または3日毎に交換した。
間葉系幹細胞としては、ヒト骨髄由来の間葉系幹細胞(Bio−Whittaker社(Walkersville,MD)より購入)3株(以下、K株、L株、M株と表記する)を用いた。尚、K株は、8回継代したものを用い、L株は、7回継代したものを用い、M株は、10回継代したものを用いた。
上記間葉系幹細胞を、無血清のSTK2培地を用い、培地を入れた6穴マイクロプレートに、上記間葉系幹細胞を5000個/cm2の密度で播種した。細胞培養期間中、培地は2日または3日毎に交換した。
上記間葉系幹細胞を、10%FBS含有DMEM培地を用い、培地を入れた6穴マイクロプレートに、上記間葉系幹細胞を5000個/cm2の密度で播種した。細胞培養期間中、培地は2日または3日毎に交換した。
Claims (13)
- EGF、FGF、およびPDGFからなる群より選択される1以上の増殖因子と、デキサメタゾンと、β−グリセロリン酸とを少なくとも含有することを特徴とする、幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するための分化誘導培地用添加剤。
- 少なくとも1つのリン脂質をさらに含有することを特徴とする、請求項1に記載の分化誘導培地用添加剤。
- 上記リン脂質が、フォスファチジン酸、リゾフォスファチジン酸、フォスファチジルイノシトール、フォスファチジルセリン、フォスファチジルエタノールアミン、フォスファチジルコリン、およびフォスファチジルグリセロールからなる群より選択されることを特徴とする、請求項2に記載の分化誘導培地用添加剤。
- 酸化防止剤をさらに含有することを特徴とする、請求項2に記載の分化誘導培地用添加剤。
- 上記酸化防止剤がDL−α−トコフェロールアセテート(ビタミンE)であることを特徴とする、請求項4に記載の分化誘導培地用添加剤。
- 上記幹細胞が、間葉系幹細胞であることを特徴とする、請求項1から5のいずれか1項に記載の分化誘導培地用添加剤。
- 請求項1から5のいずれか1項に記載の分化誘導培地用添加剤を構成する成分および基礎培地を含有し、血清を含まないことを特徴とする、幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するための培養培地。
- 上記幹細胞が、間葉系幹細胞であることを特徴とする、請求項7に記載の培養培地。
- 請求項7に記載の培養培地中で幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を分化培養する工程を包含することを特徴とする、幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するための培養方法。
- 上記幹細胞が、間葉系幹細胞であることを特徴とする、請求項9に記載の培養方法。
- 請求項1から5のいずれか1項に記載の分化誘導培地用添加剤を構成する成分を備えていることを特徴とする、幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を無血清条件下で骨分化誘導するためのキット。
- 上記幹細胞が、間葉系幹細胞であることを特徴とする、請求項11に記載のキット。
- 請求項7に記載の培養培地中で幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を分化培養する工程よりも前に、FGF、PDGF、EGF、TGF−βおよびHGFからなる群より選択される少なくとも3つの増殖因子、並びに少なくとも1つのリン脂質を含有し、且つ血清を含まない培養培地中で幹細胞、歯髄細胞、歯根膜細胞、胎盤、羊膜および線維芽細胞からなる群より選択される1種以上の細胞を増殖培養する前工程を包含することを特徴とする、請求項9または10に記載の培養方法。
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Also Published As
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EP2351831A1 (en) | 2011-08-03 |
KR101712501B1 (ko) | 2017-03-07 |
AU2009315204A8 (en) | 2013-03-28 |
AU2009315204A1 (en) | 2010-05-20 |
WO2010055616A1 (ja) | 2010-05-20 |
AU2009315204B2 (en) | 2015-03-26 |
EP2351831B1 (en) | 2017-06-14 |
KR20110084281A (ko) | 2011-07-21 |
US20110212523A1 (en) | 2011-09-01 |
EP2351831A4 (en) | 2012-04-18 |
JPWO2010055616A1 (ja) | 2012-04-12 |
US20160032247A1 (en) | 2016-02-04 |
US10131877B2 (en) | 2018-11-20 |
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