JP7205928B2 - 神経幹細胞の高効率分離培養方法 - Google Patents
神経幹細胞の高効率分離培養方法 Download PDFInfo
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Description
ヒトの脳組織の重量を測定した後、2~3回PBSを使用してウォッシングを行った。組織を適切なサイズに切り取った後、エンザイム溶液(10 units/ml of papain、0.1mg/ml of DNase I、4mg/ml of D、L-cysteine)に入れた後、ブレードと手術用はさみを使用して、物理的に小片に切り取った。37℃で30分間処理後、使い捨てピペット(disposable pipette)を使用して組織を細かく破砕した後、70uMメッシュを使用してろ過した後、PBS(Phosphate Buffered Saline)を使用してウォッシングを行った。
神経幹細胞を70~80%程度のコンフルエンシーで培養した後、PBSで2回ウォッシングした。神経分化条件であるDMEM/F12、0.5%FBS、B27、0.5mM IBMX、P/Sを処理した後、48時間後に細胞を固定した後、免疫染色を行った。
神経幹細胞は、PLOがコーティングされた8 well chamber slide(thermo)に培養した後、4%パラホルムアルデヒド(paraformaldehyde)に5分間固定させた。0.1%Triton-X100が希釈されているPBS(0.1%PBST)で水洗した後、ブロッキング(blocking)溶液(5%normal goat serum、5%normal donkey serum)で1時間程度処理した後、1次抗体を処理して一晩の間(overnight)反応させ、翌日、PBSで2回ウォッシング後、Alexa488またはAlexa594が結合された2次抗体を1時間の間処理した。DAPIでカウンターステイニング(counter staining)を行った後、マウンティング後に蛍光顕微鏡で観察した。
クランプ培養方法の最適条件を探すために、ヒトの脳組織にエンザイム溶液を処理し、物理的に細かく分割した後、様々なサイズのメッシュ(mesh)にかけてサイズ別にクランプを獲得した(図4a参照)。クランプをサイズ別に下記のようにタイプI~タイプIVを決めて、その形態を顕微鏡で観察した。
70μm<クランプタイプII<100μm
40μm<クランプタイプIII<70μm
クランプタイプIV<40μm
クランプのサイズ別分離培養効果を比較するため、前記実施例1の方法によって2名の患者から由来したクランプタイプI~IVを培養してコロニーの数字を確認し、顕微鏡でコロニーの形状などを観察した。
本発明による方法でクランプタイプIIを培養した場合とパーコールを用いた単一細胞培養時の効果を比較するため、前記実施例1の方法によって細胞を培養し、培養成長曲線を作成し、クランプタイプIIの継代培養による細胞の形態を顕微鏡で観察した。
臍帯由来の血管内皮細胞は、Promocellから購入し、供給者の専用培地を使用した。200μLのPhenol red-free Matrigel(BD)に1x106血管内皮細胞と1x106神経幹細胞を混ぜた後、4-6週齢のBalbc-nuマウスの皮下に移植した。3-4日後にMatrigel除去した後、4%PFAで24時間の間固定した後、ブロックを製作した。組織学的分析のためにヘマトキシリン&エオジン(H&E)染色を行い、Matrigel内に生成された新生血管を染色するため、血管内皮細胞と神経幹細胞を区別するためにCD31とalpha-smooth muscle actin(α-SMA)で免疫蛍光染色を行った。
Claims (3)
- 脳組織を酵素溶液に入れて酵素処理する段階と、
酵素処理された脳組織から物理的に細胞クランプ(clump)を分離する段階と、
前記細胞クランプをサイズに応じて分離し、不純物を除去する段階と、
前記細胞クランプを培養皿に接種して継代培養する段階と、
を含み、
前記細胞クランプは、70~100μmのサイズを有するものである、
神経幹細胞の高効率分離培養方法。 - 前記酵素溶液は、パパイン(papain)と、DNase Iと、システイン(cysteine)と、を含む、請求項1に記載の神経幹細胞の高効率分離培養方法。
- 前記脳組織は、成人の脳組織である、請求項1に記載の神経幹細胞の高効率分離培養方法。
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KR20180031101 | 2018-03-16 | ||
KR10-2018-0031101 | 2018-03-16 | ||
KR10-2019-0011226 | 2019-01-29 | ||
KR1020190011226A KR101994640B1 (ko) | 2018-03-16 | 2019-01-29 | 신경줄기세포의 고효율 분리배양 방법 |
PCT/KR2019/001288 WO2019177270A1 (ko) | 2018-03-16 | 2019-01-30 | 신경줄기세포의 고효율 분리배양 방법 |
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JP2021518118A JP2021518118A (ja) | 2021-08-02 |
JP7205928B2 true JP7205928B2 (ja) | 2023-01-17 |
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EP (1) | EP3783099A4 (ja) |
JP (1) | JP7205928B2 (ja) |
KR (1) | KR101994640B1 (ja) |
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US20120295348A1 (en) | 2010-02-03 | 2012-11-22 | Samsung Life Public Welfare Foundation | Method for proliferating stem cells by activating c-met/hgf signaling and notch signaling |
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ATE493504T1 (de) * | 2003-09-12 | 2011-01-15 | Stemcell Technologies Inc | Test für neurale koloniebildung |
JP5294635B2 (ja) * | 2004-11-29 | 2013-09-18 | イエダ リサーチ アンド デベロップメント カンパニー リミテッド | コポリマー1と組み合わせた、神経発生の誘発及び幹細胞治療 |
WO2007020611A2 (en) * | 2005-08-19 | 2007-02-22 | ECBIO - Investigação e Desenvolvimento em Biotecnologia, S.A. | Adult human neural stem/progenitor cells from the olfactory epithelium and olfactory lamina propria, isolation method, proliferation and differentiation in serum free culture medium and utilization for transplantation |
KR101269125B1 (ko) * | 2010-02-03 | 2013-06-04 | 사회복지법인 삼성생명공익재단 | 노치 신호 활성 유전자를 이용한 줄기세포의 증식 방법 |
AU2012206411B2 (en) | 2011-01-12 | 2017-05-18 | Tsuneo KIDO | Culture method to obtain and maintain a pure or enriched population of mammalian neural stem cells and/or neural progenitor cells that are prone to differentiate into oligodendrocyte-lineage cells |
CN104017771B (zh) * | 2014-06-24 | 2016-01-13 | 中南大学 | 一种促进大鼠神经干细胞分化的培养基及其使用方法 |
KR101910269B1 (ko) * | 2017-02-24 | 2018-10-19 | 성균관대학교산학협력단 | 인간 뇌 조직 유래 신경줄기세포의 고효율 분리 방법 |
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- 2019-01-30 CN CN201980019698.2A patent/CN112154203A/zh active Pending
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- 2019-01-30 WO PCT/KR2019/001288 patent/WO2019177270A1/ko unknown
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US20120295348A1 (en) | 2010-02-03 | 2012-11-22 | Samsung Life Public Welfare Foundation | Method for proliferating stem cells by activating c-met/hgf signaling and notch signaling |
Non-Patent Citations (2)
Title |
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Exp. Anim.,2002年,Vol.51, No.4,pp.383-390 |
Nat. Protoc.,2011年,Vol.6, No.12,pp.1981-1989 |
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EP3783099A4 (en) | 2022-01-12 |
JP2021518118A (ja) | 2021-08-02 |
EP3783099A1 (en) | 2021-02-24 |
KR101994640B1 (ko) | 2019-07-02 |
WO2019177270A1 (ko) | 2019-09-19 |
CN112154203A (zh) | 2020-12-29 |
US20220243175A1 (en) | 2022-08-04 |
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