JP6865264B2 - 細胞シート製作方法及び応用のための高分子薄膜培養プレート製作方法及び用途 - Google Patents
細胞シート製作方法及び応用のための高分子薄膜培養プレート製作方法及び用途 Download PDFInfo
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Description
(a)細胞シート形態の細胞集合体をホール構造体(structure with holes)の表面に1層以上付着するステップ;及び
(b)細胞集合体の適用を必要とする部位に細胞集合体が付着された面が対向するようにホール構造体を配置した後、ホール構造体のみを剥離するステップ。
pD4V蒸着時、化学気相蒸着反応器(iCVD、Daeki Hi−Tech Co., Ltd)を使用して、DVB(ジビニルベンゼン)単量体(Sigma−Aldrich)、4VP(4−ビニルピリジン)単量体(Sigma−Aldrich)と開始剤(tert−ブチルペルオキシド、TBPO、Sigma−Aldrich)を60:240:60の割合でiCVD反応器内に流しながら、反応器内のフィラメントの温度は140℃、反応器内の基板温度は23℃、反応器内チャンバーの圧力は300mTorrに維持しながら1時間30分蒸着を遂行して、400nm厚さのDVB−4VP共重合体(npD4V)が蒸着された培養プレートを得た。
重合体薄膜を蒸着した後、フーリエ変換赤外線分光学(FT−IR、ALPHA FT−IR吸光モード、Bruker Optics)を用いて重合体の分子骨格及び分率を測定した。その結果、図3に示したように、1596cm−1と1415cm−1(左側2つの点線)ピークを通じて4VP分子の存在を、710cm−1と903cm−1(右側2つの点線)ピークを通じてDVB分子の存在及び重合体合成を確認した。
DVB−4VP共重合体(pD4V)がコーティングされている細胞培養皿にNIH3T3細胞を培養した後、細胞シート形成有無を確認した。細胞が十分に育った時、4%ホルムアルデヒドで固定し、DAPIとファロイジン(phalloidin)を用いて核とアクチンを染色して蛍光顕微鏡で観察した。図5に示したように、全ての培養プレートで細胞が毒性無しでよく育つことが確認されており、DVB培養表面では細胞スフェロイド(spheroids)が形成され、4VP培養表面では細胞が付着されて育つことが観察された。一方、共重合体培養表面(pD4V1、pD4V2)では細胞が付着されて育ったが、DPBS(Dulbecco’s Phosphate Buffered Saline)を用いて洗浄した後に、自ずから細胞シート形態に離れて出ることが観察された。
前記実施形態1により製造されたpD4Vが蒸着された35piディッシュでNIH3T3とhMSCを培養後、細胞シート形成を確認した。細胞培養はNIH3T3細胞をDMEM(Dulbecco’s Modified Eagle Medium)/10%FBS/1%抗生剤(ペニシリンストレプトマイシン、Gibco)で、hMSC細胞はMEMα(Minimum Essential Medium α)/17% FBS/1%抗生剤(ペニシリンストレプトマイシン、Gibco)培地を使用し、3日〜5日培養したら細胞シートが形成された。この際、培養液を除去し、DPBS(Dulbecco’s Phosphate buffer saline)で洗浄すれば、形成された細胞シートが培養プレート表面から自発的に分離されて出ることを確認することができた(図6及び図7)。
細胞シートを製造するためには、pD4V重合体がコーティングされている細胞培養プレートに細胞を培養して細胞間の接合が十分に起こることができるまで培養した後、Dulbesco’s phosphate buffered saline(DPBS)溶液を用いて培養した細胞をシート形態に分離すればよい。培養皿上で剥離した1枚の細胞シートを吸引して新たな細胞培養皿に移した後、37℃飽和水蒸気のインキュベーターに適当な時間(例えば、15分間〜30分間)放置した。その間に細胞シートは培養皿上に接着した。次に、剥離した直後の2番目の細胞シートを培養液と共にピペットで吸引して、培養皿上に固定された最初の細胞シートの上に滴下した。滴下した2枚のシートに、また新たな培養液をゆっくり滴下することによって、2番目のシートを最初のシートに重なった状態で接合することができた。同一な手法を繰り返して細胞シートを順に積層化することができた。
本発明により製作された前記細胞シートを積層し、これを他の細胞培養皿または細胞シートの適用を必要とする客体に一層容易に転写(transfer)するために、次のような方法を使用した。
Claims (5)
- ジビニルベンゼンと4−ビニルピリジンが形成した共重合体でコーティングされた表面を有し、
前記ジビニルベンゼンと前記4−ビニルピリジンとのモル比が1〜3:4(ジビニルベンゼン:4−ビニルピリジン)であることを特徴とする、培養プレート。 - 前記培養プレートは、細胞シート形態の細胞集合体製造用であることを特徴とする、請求項1に記載の培養プレート。
- 前記培養プレートの素材は、ガラス、金属、金属酸化物、繊維、紙、及びプラスチックで構成された群より選択されることを特徴とする、請求項1から2のいずれかに記載の培養プレート。
- 前記プラスチックは、ポリエチレン(polyethylene、PE)、ポリプロピレン(polypropylene、PP)、ポリスチレン(polystyrene、PS)、ポリエチレンテレフタレート(polyethyleneterephthalate、PET)、ポリアミド(polyamides、PA)、ポリエステル(polyester、PES)、ポリ塩化ビニル(polyvinylchloride、PVC)、ポリウレタン(polyurethanes、PU)、ポリカーボネート(polycarbonate、PC)、ポリ塩化ビニリデン(polyvinylidene chloride、PVDC)、ポリテトラフルオロエチル(polytetrafluoroethylene、PTFE)、ポリエーテルエーテルケトン(polyetheretherrketone、PEEK)、及びポリエーテルイミド(polyetherimide、PEI)で構成された群より選択されることを特徴とする、請求項3に記載の培養プレート。
- ジビニルベンゼンと4−ビニルピリジンが形成した共重合体でコーティングされた表面を有する培養プレートで細胞を培養するステップを含み、
前記ジビニルベンゼンと前記4−ビニルピリジンとのモル比が1〜3:4(ジビニルベンゼン:4−ビニルピリジン)であることを特徴とする、細胞シート形態の細胞集合体製造方法。
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GB2493763A (en) * | 2011-08-18 | 2013-02-20 | Univ Cranfield | Microplates with Enhanced Immobilisation capabilities |
CA2877757A1 (en) * | 2012-06-29 | 2014-01-03 | Polymers Crc Ltd. | Process for modifying a polymeric surface |
EP3101116A4 (en) * | 2014-01-29 | 2017-10-04 | Daikin Industries, Ltd. | Temperature-responsive base material, method for producing same, and method for evaluating same |
US20170130195A1 (en) * | 2014-06-10 | 2017-05-11 | Korea Advanced Institute Of Science And Technology | Cell culture substrate, manufacturing method therefor, and use thereof |
KR101583159B1 (ko) | 2014-10-30 | 2016-01-08 | 연세대학교 산학협력단 | 대면적 세포시트 제작용 세포배양용기, 이의 제조방법, 이를 이용한 세포시트 수확시스템 및 수확방법 |
KR101752715B1 (ko) | 2014-11-11 | 2017-06-30 | 서울대학교산학협력단 | 세포 시트 제조용 장치 및 이의 제조 방법 |
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