JP4915722B2 - 腎臓幹/前駆細胞の分離方法 - Google Patents
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Description
先ず、腎疾患患者の尿中から尿中落下細胞を分離し、培養した。
次に、分離した尿中落下細胞における遺伝子発現を確認した。
DNA結合色素であるヘキスト33342(Hoechst33342)は、紫外線レーザー光で励起すると400〜600nm以上に亘る広範囲の蛍光を発することが知られており、多種の細胞が混ざったヘテロな細胞集団、例えば骨髄細胞等をこの色素で染色した後にフローサイトメトリーを用いて450nm前後の青色蛍光と675nm前後の赤色蛍光とで二次元に展開すると、通常の細胞周期解析で見られるG0/G1期の細胞よりもさらに蛍光の暗い部分に特異なパターンを持つヘキスト33342弱陽性又は陰性の細胞集団が現れる。この細胞集団は、残りの大部分の細胞が属する主集団(メインポピュレーション)から突出した展開パターンを示すため、サイドポピュレーション(side population;SP)細胞と呼ばれる。
次に、尿中落下細胞からの腎臓幹/前駆細胞の分離効率化を検討するため、近年、腎疾患の指標となり得ることが報告された尿中L−FABP値と、初代培養の培養効率との関係を検討した。
次に、分離した腎臓幹/前駆細胞が成体腎臓に生着し、機能する形質を有しているか否かを確認するため、成体腎臓に障害を与え、腎臓が再生する過程においてこの細胞が生着するか否かを検討した。
Claims (3)
- 尿中の肝型脂肪酸結合タンパク質が高値を示すヒト腎疾患患者の尿中に含まれる細胞の初代培養細胞をヘキスト33342で染色し、その弱陽性又は陰性画分を分離することを特徴とする腎臓幹/前駆細胞の分離方法。
- 上記弱陽性又は陰性画分は、上記ヘキスト33342と共にMDR(multi drug resistance gene)分子の機能阻害剤を添加することにより消失する画分であることを特徴とする請求項1記載の腎臓幹/前駆細胞の分離方法。
- 初代培養の培地には、マウス間葉系細胞(受託番号FERM BP−10865)の培養上清が含まれていることを特徴とする請求項1記載の腎臓幹/前駆細胞の分離方法。
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EP2146728A4 (en) | 2007-05-21 | 2010-12-29 | Univ Wake Forest Health Sciences | PRELIMINARY CELLS FROM THE HARN AND METHOD FOR THEIR USE |
JP5419968B2 (ja) * | 2008-05-21 | 2014-02-19 | エフ.ホフマン−ラ ロシュ アーゲー | 心臓治療を必要とする個体におけるl−fabp、ナトリウム利尿ペプチド及び心筋トロポニン |
WO2010065239A1 (en) | 2008-12-05 | 2010-06-10 | Wake Forest University Health Sciences | Stem cells from urine and methods for using the same |
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JP4085410B2 (ja) * | 2003-03-14 | 2008-05-14 | 株式会社 バイオリンクインク | 腎臓幹細胞/前駆細胞、腎臓幹細胞/前駆細胞の分離方法、及び腎疾患の治療方法 |
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