JP2016504037A - 膵内分泌細胞への分化のためのヒト多能性細胞の懸濁及びクラスタリング - Google Patents
膵内分泌細胞への分化のためのヒト多能性細胞の懸濁及びクラスタリング Download PDFInfo
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Abstract
Description
本出願は、米国仮特許第61/747,799号(2012年12月31日出願)及び米国仮特許第61/962,158号(2013年11月1日)に対する優先権を主張し、これらの出願の両方は、その全体が参照によって組み込まれる。
本発明は、凝集した細胞クラスタにおいて、内胚葉前駆細胞、膵内分泌細胞、中胚葉細胞、又は外胚葉細胞への分化のための多能性を維持する、胚性幹細胞及び他の多能性細胞を調製することを含む、細胞分化の分野にある。一態様では、本発明は、多能性幹細胞のクラスタを生成し、膵臓内胚葉、膵内分泌前駆細胞、及び単一ホルモン膵内分泌細胞への分化のために、懸濁培養系内でそれらを維持する方法を開示する。
幹細胞は、単一細胞レベルでの自己再生能及び分化能の両方によって定義される未分化細胞である。幹細胞は、自己再生前駆細胞、非再生性前駆細胞、及び最終分化細胞を含む子孫細胞を産生することができる。幹細胞はまた、複数の胚葉(内胚葉、中胚葉、及び外胚葉)から様々な細胞系統の機能性細胞へと生体外で分化するそれらの能力を特徴とする。幹細胞は、移植後に複数の胚葉の組織を生じさせ、胚盤胞に注入後、実質的に(全てではないとしても)ほとんどの組織に寄与する。
多能性幹細胞は、指定されたTRA−1−60及びTRA−1−81抗体のうちの1つ以上を発現し得る(Thomson et al.1998,Science 282:1145〜1147)。生体外での多能性幹細胞の分化は、TRA−1−60及びTRA−1−81発現の損失をもたらす。未分化の多能性幹細胞は、典型的に、アルカリホスファターゼ活性を有し、これは、製造業者(Vector Laboratories(CA,USA))により説明されているように、細胞を4%のパラホルムアルデヒドで固定し、その後基質としてVector(登録商標)Redを使用して現像することにより検出され得る。未分化の多能性幹細胞はまた、RT−PCRにより検出されるように、典型的には、OCT4及びTERTも発現する。
本発明の方法において、任意の多能性幹細胞が使用され得る。使用され得る多能性幹細胞の例示的な型は、典型的には、妊娠約10〜12週よりも前であるが、必須ではない、妊娠中の任意の時期に採取した前胚性組織(例えば、胚盤胞など)、胚性組織、又は胎児組織などを含む、妊娠後に形成される組織に由来する多能性細胞の樹立株を含む。非限定的な例は、ヒト胚性幹細胞(hESCs)又はヒト胚生殖細胞の樹立株であり、例えば、ヒト胚性幹細胞株H1、H7、及びH9(WiCell Research Institute(Madison,WI,USA))などである。フィーダー細胞の不在下で既に培養された多能性幹細胞集団から採取した細胞も好適である。
多能性幹細胞の増大
本発明は、以下に記載される実施形態のいくつかにおいて、幹細胞の単離及び培養、特に動的懸濁培養系において多能性を保持する幹細胞クラスタの培養に関する。多能性細胞クラスタは、分化して、機能的β細胞を産生し得る。
ディスパーゼ/中性プロテアーゼでの、細胞株H1のヒト胚性幹細胞の懸濁及びクラスタリング
継代培養41でのヒト胚性幹細胞株H1の細胞(WA01 cells、WiCell(Madison WI))を、PBS(Catalog# 14190,Invitrogen)で1度洗浄し、DMEM/F12(Invitrogen Catalog# 11330(Grand Island,NY))内で、Dispase(商標)(中性プロテアーゼ、Sigma Catalog# 12604−013(St.Louis,MO))の1mg/mLの溶液で処理した。群体の縁部が丸まって持ち上がり始めるが、培養系表面からの群体の完全な離解の前まで細胞を、37℃で15〜25分間インキュベートした。その後、ディスパーゼを除去し、10μMのy−27632(Axxora Catalog#ALX−270−333(San Diego,CA))を含有するmTeSR(登録商標)1(Stem Cell Technologies(Vancouver,BC,Canada))培地で、培養皿を2度洗浄した。その後、10μMのy−27632を含有するmTeSR(登録商標)1培地を、5mL/60cm2で培養皿に添加し、スクラッパー又はゴム製ポリスマンで表面から細胞を引き上げた。その後、ガラスピペットを使用して、培地及び細胞を50mLの円錐チューブに移動し、クラスタを0.9N(90g(rcf)で3分間遠心分離した。
EDTAでの、細胞株H1のヒト胚性幹細胞の懸濁及びクラスタリング
継代培養41でのヒト胚性幹細胞株H1の細胞(WA01 cells、WiCell(Madison WI))を、PBS(Catalog# 14190,Invitrogen)で1度洗浄し、非酵素的細胞引き上げ/継代培養剤であるEDTA(Lonza,Catalog# 12604−013(St.Louis,MO))で処理した。細胞を、室温で8分間インキュベートした。その後、EDTAを除去し、1〜2分以上(9〜10分間の全EDTA露出)の後、10μMのy−27632(Axxora Catalog#ALX−270−333(San Diego,CA))を含有するmTeSR(登録商標)1培地で平板を濯ぎ、ガラスピペットを使用して、除去された細胞を50mLの円錐チューブ内に回収した。10μMのy−27632を含有するmTeSR(登録商標)1培地で平板の濯ぎを更にもう1度実行し、除去された細胞と共に貯留した。室温での9〜10分間のEDTAへの露出の後、いくつかの細胞は平板上に留まり、引き上げられた細胞は、単一の細胞懸濁液に完全には脱凝集されなかったことに留意すること。代わりに、表面から小さな凝集体として細胞を除去した。その後、ガラスピペットを使用して、培地及び細胞を50mLの円錐チューブに移動し、細胞計数を実行した(NucleoCounter−Chemetec,Cat#YC−T100(Denmark))。必要に応じて、10μMのy−27632を含有する追加のmTeSR(登録商標)1培地を添加して、100〜150万個の細胞/mLの細胞の濃度を作製した。
細胞株H1のヒト胚性幹細胞の、懸濁クラスタリング及び連続的懸濁継代培養
Matrigel(登録商標)でコーティングした組織培養処理したポリスチレン上で成長させた、継代培養40での、ヒト胚性幹細胞株H1の細胞(WA01 cells、WiCell(Madison WI))を、PBS(Catalog# 14190,Invitrogen)で2度洗浄し、Accutase(商標)(1部のPBS対1部のAccutase,Sigma,Catalog# 12604−013(St.Louis,MO))の半強度の溶液で処理した。細胞を、室温で3分半インキュベートした。(Accutase(商標)は、コラーゲン分解性及びタンパク質分解性酵素(甲殻類から単離される)からなる細胞離解溶液であり、哺乳類又は細菌由来の産物を含有しない)。その後、Accutase(商標)を除去し、更に3分後(6分半の全アキュターゼ露出)、10μMのy−27632を含有するmTeSR(登録商標)1培地で平板を濯ぎ、ガラスピペットを使用して、除去された細胞を50mLの円錐チューブ内に回収した。10μMのy−27632を含有するmTeSR(登録商標)1培地で平板の濯ぎを更にもう1度実行し、除去された細胞と共に貯留した。いくつかの細胞は、Accutase(商標)への露出後に平板上に留まり、引き上げられた細胞は、単一の細胞懸濁液に完全には脱凝集されなかった。むしろ、表面から小さな凝集体として細胞を除去した(図3a)。その後、ガラスピペットを使用して、培地及び細胞を50mLの円錐チューブに移動し、細胞計数を実行した。必要に応じて、10μMのy−27632を含有する追加のmTeSR(登録商標)1培地を添加して、100〜150万個の細胞/mLの細胞の濃度を作製した。
懸濁培養したヒト胚性の指向された分化
細胞株H1の幹細胞
継代培養40での、ヒト胚性幹細胞株H1の細胞(WA01 cells、WiCell(Madison WI))を、Accutase(商標)を使用して平面接着培養系から引き上げ、懸濁培養系形式に移動した。実施例3に記載される方法を使用する30回の継代培養のために、動的撹拌される懸濁培養系において細胞を維持した。
b NF=薬局方
c FCC=食品化学物質規格集
d NA=該当なし
e ACS=米国化学会
細胞株H1の接着性培養したヒト胚性幹細胞の、懸濁形式での指向された分化
継代培養41での、ヒト胚性幹細胞株H1の細胞(WA01 cells、WiCell(Madison WI))を、EDTAを使用して平面接着培養系から引き上げ、実施例2に記載される方法を使用して懸濁培養系形式に移動した。
細胞株H1のマイクロキャリア接着性培養したヒト胚性幹細胞の、懸濁形式での指向された分化
Cytodex(登録商標)3マイクロキャリアビーズ(C3)(Sigma−Aldrich,Catalog # C3275)を、15mLのDulbeccoのPBS(DPBS)を含有する、20mLの体積のシリコンコーティングされたガラスシンチレーションバイアル内に、400mgのビーズを4〜24時間浸漬することによって、培養のために調製した。(Cytodex(登録商標)3は、架橋されたデキストランのマトリックスに化学的に連結した変性コラーゲンの薄層からなる。)Cytodex(登録商標)3上の変性コラーゲン層は、トリプシン及びコラゲナーゼを含む、様々なプロテアーゼにより消化されやすく、最大限の細胞の生存性、機能、及び完全性を維持しながら、細胞をマイクロキャリアから除去するための性能を提供する。
H1(WA01)hES細胞株のサブクローン、WB0106を本実施例のために使用した。WB0106を、WiCell Research Institute(Madison,WI)で、DDL−13と称するH1株種材料から誘導した。H1株のWB0106サブクローンを、Matrigel(商標)基質上のmTESR1(商標)培地内に継代培養23で解凍した、DDL−13バイアルから誘導し、その後EDTAを使用して継代培養した。WB0106を継代培養28で凍結し、正常な核型(FISH及びGバンド)、膵臓前駆細胞に分化する能力、並びにクラスタを形成し、懸濁培養系内で増大するコンピテンシーに基づいて、これらの研究のために選択した。
・ヒト胚性幹(hES)細胞株H1、(WA01 cells、WiCell(Madison WI))
・PBS(Catalog# 14190,Invitrogen)
・Y−27632(Axxora Catalog#ALX−270−333(San Diego,CA))
・EDTA(Lonza,Catalog# 12604−013(St.Louis,MO))
・NucleoCounter−(Chemetec,Cat#YC−T100(Denmark))
・Non−Tissue Culture Treated 6ウェルの皿(Becton Dickinson,Catalog# Falcon 351146(Franklin Lakes,NJ))
・Accutase、(Sigma,Catalog# 12604−013(St.Louis,MO))
・pH、及び溶存酸素(DO)バイオリアクタープローブ(Fermprobe pH electrode 225mm,Model# F−635、及びDO Oxyprobe 12mm Sensor,Model # D−145 from Broadley James(Irvine CA))
・免疫保護マクロ封入デバイス(TheraCyte(商標)(Irvine CA))
・Mm HUMAN C−PEPTIDE ELISA(MERCODIA CAT#10−1141−01)
・Glutamax(商標),MCDB131、及びITS−X Invitrogen
・FAF−BSA(Proliant)
・レチノイン酸、グルコース45%(2.5M)、SANT(Shh阻害剤)(Sigma)
・GDF8(Peprotech)
・MCX(JNJ)
・FGF7(R & D Systems)
・LDN−193189(BMP受容体アンタゴニスト)(Stemgent)
・TPPB(プロテインキナーゼC活性薬)(ChemPartner)
・MCDB 131 Cust
凍結維持されたバイオリアクター生成膵臓前駆体クラスタの成熟及び機能
各バイオリアクター研究のために十分な細胞を生成するために、H1 hES(WB0106)細胞の1つの継代培養31マスター細胞バンクバイアルを解凍した。5つのMatrigel(商標)コーティングされた2−Layer CellSTACK(商標)(CS2)を播種するために十分な細胞が生成されるまで、EDTA継代培養を使用して、Matrigel(商標)上でのいくつかの継代培養のために、mTeSR1(商標)培地内で、接着性条件下で細胞を増大させた。CS2内で成長する接着性細胞が70%コンフルエントになると、C−flex(商標)チュービングアセンブリキャップを、隣接するポンプチュービングと共に、培地ポートに結合して、系を閉鎖した。系が閉鎖した後、Terumo溶接機を介してC−flex(商標)で袋又はボトルを溶接し、蠕動ポンプを使用して全液体体積(培地、PBS-/-、Accutase(商標)、又は懸濁される細胞)を移動した。
・上記の表10における基本培地は、ステージ1〜5でGlutamaxが補助において使用されない際、任意で5mMのグルコースを含み得る。
・任意で、上記に示す表におけるステージ4でCypi([100nM])が添加され得る。
3リットルのDASGIPバイオリアクター内で、70rpmの撹拌速度で混合される、2.7リットルのDASGIP攪拌懸濁バイオリアクター内で細胞凝集体が受ける剪断応力を決定した。剪断応力値を計算するために、以下に述べる想定がなされた。
1.細胞凝集体上に課される最大剪断応力は、乱流渦の結果ではない
2.細胞凝集体上に課される最大剪断応力は、凝集体間、又は凝集体−羽根車間の衝突の結果ではない
3.バッフル(すなわち、ディップチューブ、及びプローブ)により課される剪断応力は、これらの計算においては言及されていない
レイノルズ数:
細胞株WA01から胚体内胚葉へのヒト胚性幹細胞の分化:懸濁培養系内でのMCX/GDF8の役割
三角/振とう器フラスコ内、スピナフラスコ内、あるいは2%の脂肪酸を含まないBSA(Catalog # 68700,Proliant(IA))、1×Glutamax(商標)(Catalog # 35050−079,Invitrogen(CA))、追加の2.5mMのグルコース(Catalog # G8769,Sigma)、及び1:50,000の貯蔵濃度のITS−X(Catalog # 51500056,Invitrogen(CA))で補助した、3.64g/mLの重炭酸ナトリウム及び5.5mMのグルコース(Catalog # A13051DJ,Invitrogen(CA))を含有するMCDB−131培地内の、コーティングされない超低結合、又は非組織培養処理した6ウェルの平板内で、多能性ヒト胚性幹細胞株H1(NIHコード:WA01)からのクラスタを、0.25×106〜2×106個の細胞/mLの範囲の細胞密度で播種した。本出願の目的のために、この様式で補助したMCDB−131培地を、「ステージ1基本培地」と称することとする。この培地内のクラスタを、分化の第1日目に3μMのMCX(GSK3B阻害剤、14−プロパ−2−エン−1−イル−3,5,7,14,17,23,27−ヘプタアザテトラシクロ[19.3.1.1〜2,6〜.1〜8,12〜]ヘプタコサ−1(25),2(27),3,5,8(26),9,11,21,23−ノナエン−16−オン、米国特許出願第12/494,789号;その全体が本明細書に参照によって組み込まれる)及び100ng/mLのGDF−8(Catalog # 120−00,Peprotech)、又は3μMのMCXのみ、又は20ng/mLのWNT−3A(Catalog # 1324−WN−002,R&D Systems(MN))+100ng/mLのアクチビンA(Catalog # 338−AC,R&D Systems(MN))、又は20ng/mLのWNT−3Aのみで処理した。2日目に、100ng/mLのGDF8又は100ng/mLのアクチビンAのいずれかで補助したステージ1基本培地に細胞を移動した。フローサイトメトリー、PCR、及びウエスタンプロット分析のために、ゼロ(基本培地+補助の添加の直前)から分化開始の72時間後までの範囲の様々な時点で試料を回収した。
細胞株WA01から胚体内胚葉へのヒト胚性幹細胞の分化:懸濁培養系内でのMCX化合物濃縮物の用量反応
三角/振とう器フラスコ、又はスピナフラスコ内で、実施例9に記載のステージ1基本培地内で、多能性ヒト胚性幹細胞株H1(NIHコード:WA01)からのクラスタを、0.25×106〜2×106個の細胞/mLの範囲の細胞密度で播種した。クラスタを、分化の1日目に、1.5、2、3、又は4μMのMCXを含有するステージ1基本培地で、及び2日目に、100ng/mLのGDF−8を含有する新鮮なステージ1基本培地で処理した。3日目には培地交換を実行しなかった。分化の3日目の終了時点で、フローサイトメトリー及びPCR分析のために試料を回収した。
細胞株WA01から胚体内胚葉へのヒト胚性幹細胞の分化:懸濁培養系内の培地交換頻度の役割
三角/振とう器フラスコ、又はスピナフラスコ内で、実施例9に記載のステージ1基本培地内で、多能性ヒト胚性幹細胞株H1(NIHコード:WA01)からのクラスタを、0.25×10^6〜2×10^6個の細胞/mLの範囲の細胞密度で播種した。クラスタを、分化の1日目に、3μMのMCXを含有するステージ1基本培地で、及び2日目に、100ng/mLのGDF−8を含有する新鮮なステージ1基本培地で処理した。対照培養系は、3日目に培地交換を受けた;別個の管に対して、3日目には培地交換を実行しなかった。分化の3日目の終了時点で、フローサイトメトリー及びPCR分析のために試料を回収した。
細胞株WA01から胚体内胚葉へのヒト胚性幹細胞の分化:懸濁培養系内でのGlutamax(商標)の使用
三角/振とう器フラスコ、又はスピナフラスコ内で、多能性ヒト胚性幹細胞株H1(NIHコード:WA01)からのクラスタを、0.25×106〜2×106個の細胞/mLの範囲の細胞密度で播種した。
細胞株WA01から胚体内胚葉へのヒト胚性幹細胞の分化:懸濁培養系内での重炭酸ナトリウム濃縮物の役割
三角/振とう器フラスコ、又はスピナフラスコ内で、実施例9に記載するステージ1基本培地(3.64g/lの重炭酸ナトリウムを含有)内、又は2.43g/lの重炭酸ナトリウムを含有する修飾ステージ1基本培地内のいずれかで、多能性ヒト胚性幹細胞株H1(NIHコード:WA01)からのクラスタを、0.25×106〜2×106個の細胞/mLの範囲の細胞密度で播種した。実施例12に記載するように、MCX及びGDF−8を含有するステージ1基本培地で、クラスタを処理した。分化の3日目の終了時点で、フローサイトメトリーのために試料を回収した。分化の各日における、位相差画像もまた撮像した。
測定可能なバイオリアクタープロセスにおける、ヒト誘導多能性幹細胞からの膵臓前駆体クラスタの生成
細胞治療は、一用量につき、大量(>108)の細胞を必要とする。この実施例は、現在の細胞治療製造の慣行で可能であるものよりも、3〜5桁大きい誘導多能性幹細胞(iPS細胞)集団を分化させることができるプロセスを実証する。
・ヒト胚性幹(hES)細胞株H1、(WA01cells、WiCell(Madison WI))
・PBS(Catalog# 14190,Invitrogen)
・Y−27632(Axxora Catalog#ALX−270−333(San Diego,CA))
・EDTA(Lonza,Catalog# 12604−013(St.Louis,MO))
・NucleoCounter−(Chemetec,Cat#YC−T100(Denmark))
・Non−Tissue Culture Treated 6ウェルの皿(Becton Dickinson,Catalog#Falcon 351146(Franklin Lakes,NJ))
・Accutase(Sigma,Catalog# 12604−013(St.Louis,MO))
・pH、及び溶存酸素(DO)バイオリアクタープローブ(Fermprobe pH electrode 225mm,Model # F−635、及びDO Oxyprobe 12mm Sensor,Model # D−145 from Broadley James(Irvine CA))
・免疫保護マクロ封入デバイス(TheraCyte(商標)(Irvine CA))
・ヒトC−ペプチドELISA(MERCODIA CAT# 10−1141−01)
・Glutamax(商標),MCDB131、及びITS−X Invitrogen
FAF−BSA(Proliant)
・レチノイン酸、グルコース45%(2.5M)、SANT(Shh阻害剤)(Sigma)
・GDF8(Peprotech)
・MCX(JNJ)
・FGF7(R & D Systems)
・LDN−193189(BMP受容体アンタゴニスト)(Stemgent)
・TPPB(プロテインキナーゼC活性薬)(ChemPartner)
細胞株WA01から胚体内胚葉へのヒト胚性幹細胞の分化:懸濁培養系内でのMCX/GDF8の細胞周期調節剤としての役割
三角振とう器フラスコ内の、2%の脂肪酸を含まないBSA(Catalog # 68700,Proliant(IA))、1×Glutamax(商標)(Catalog # 35050−079,Invitrogen(CA))、追加の2.5mMのグルコース(Catalog # G8769,Sigma)、及び1:50,000の貯蔵濃度のITS−X(Catalog # 51500056,Invitrogen(CA))で補助した、3.64g/mLの重炭酸ナトリウム、及び5.5mMのグルコース(Catalog # 13051DJ,Invitrogen(CA))を含有するMCDB−131培地内で、多能性ヒト胚性幹細胞株H1(NIHコード:WA01)からのクラスタを、0.5×106個の細胞/mLで播種した。本実施例の目的のために、この様式で補助したMCDB−131培地を、ステージ1基本培地又は「無溶媒」培地と称することとする。GSK3B阻害剤、14−プロパ−2−エン−1−イル−3,5,7,14,17,23,27−ヘプタアザテトラシクロ[19.3.1.1〜2,6〜.1〜8,12〜]ヘプタコサ−1(25),2(27),3,5,8(26),9,11,21,23−ノナエン−16−オン(米国特許出願第12/494,789号;その全体が本明細書に参照によって組み込まれる)を、「MCX」と称する。
測定可能な懸濁分化プロセスを使用する、外胚葉組織及び中胚葉組織の生成
本実施例は、多能性幹細胞(PSC)の増大及び分化の両方をして、外胚葉組織又は中胚葉組織の生成のための測定可能な製造プロセスを達成することができるプロセスを実証する。
材料:
ヒト臍帯組織由来細胞(米国特許第7,510,873号に開示)
誘導可能多能性幹細胞
単為生殖生物
ヒト胚性幹(hES)細胞株H1、(WA01 cells,WiCell(Madison WI))
PBS(Catalog# 14190,Invitrogen)
Y−27632(Axxora Catalog#ALX−270−333(San Diego,CA))
EDTA、(Lonza,Catalog# 12604−013(St.Louis,MO))
NucleoCounter−(Chemetec,Cat#YC−T100(Denmark))
非組織培養処理した6ウェルの皿(Becton Dickinson,Catalog# Falcon 351146(Franklin Lakes,NJ))
アキュターゼ、(Sigma,Catalog# 12604−013(St.Louis,MO))
pH、及び溶存酸素(DO)バイオリアクタープローブ(Fermprobe pH electrode 225mm,Model # F−635、及びDO Oxyprobe 12mm Sensor,Model # D−145 from Broadley James(Irvine CA))
免疫保護マクロ封入デバイス(TheraCyte(商標)(Irvine CA))
ヒトC−ペプチドELISA(MERCODIA CAT# 10−1141−01)
Glutamax(商標)、MCDB131、及びITS−X Invitrogen
FAF−BSA(Proliant)
レチノイン酸、グルコース45%(2.5M)、SANT(Shh阻害剤)(Sigma)
GDF8(Peprotech)
MCX(JNJ)
IWP−4(WNT3阻害剤)Stemgent
MCDB131培地
MCDB131培地(カスタム化)−NaCO3レベルを3.64g/Lに上昇させるために修飾
Claims (32)
- 三次元の細胞クラスタを産生する方法であって、
a.平面接着培養系で多能性幹細胞を成長させる工程と、
b.前記多能性幹細胞を凝集した細胞クラスタに増大させる工程と、
c.酵素又はキレート剤を使用して、前記多能性幹細胞のクラスタを、前記平面接着培養系から動的懸濁培養系に移動する工程と、を含み、
三次元の細胞クラスタが形成される、方法。 - 前記細胞クラスタが、中性プロテアーゼ又はアキュターゼから選択される酵素を使用して、平面接着培養系から前記懸濁培養系に移動される、請求項1に記載の方法。
- 前記酵素が、中性プロテアーゼである、請求項2に記載の方法。
- 前記細胞のクラスタが、多能性を維持する、請求項1に記載の方法。
- 前記多能性幹細胞が、誘導多能性幹細胞、ヒト臍帯組織由来細胞、単為生殖生物、ヒト胚性幹細胞(hES)、及び羊水由来細胞からなる群から選択される、請求項1に記載の方法。
- 前記細胞が、H1 hESである、請求項5に記載の方法。
- 前記凝集した細胞が、CD9、SSEA4、TRA−1−60、及びTRA−1−81を発現し、CXCR4の発現を欠く、請求項1に記載の方法。
- 前記細胞クラスタが、キレート剤を使用して、平面接着培養系から前記懸濁培養系に移動される、請求項1に記載の方法。
- 前記キレート剤が、エチレンジアミン四酢酸(EDTA)である、請求項8に記載の方法。
- 動的に撹拌される懸濁培養系内で多能性幹細胞を増大させ、分化させる方法であって、
a.平面接着培養系で多能性幹細胞を成長させることと、
b.前記多能性幹細胞を凝集した細胞クラスタに増大させることと、
c.酵素又はキレート剤を使用して、前記多能性幹細胞のクラスタを、前記平面接着培養系から動的懸濁培養系に移動することと、
d.動的に撹拌される懸濁培養系内で前記細胞クラスタを維持することであって、前記幹細胞クラスタが、CD9、SSEA4、TRA−1−60、及びTRA−1−81を発現し、CXCR4の発現を欠く、維持することと、
e.動的撹拌される懸濁培養系内で前記多能性細胞クラスタを分化させて、膵臓前駆細胞集団、神経前駆細胞集団、又は心筋細胞前駆細胞集団を生成することと、を含む、方法。 - 前記多能性幹細胞が、誘導多能性幹細胞、ヒト臍帯組織由来細胞、単為生殖生物、ヒト胚性幹細胞(hES)、及び羊水由来細胞からなる群から選択される、請求項10に記載の方法。
- 前記方法が、β細胞転写因子を発現する膵臓前駆細胞を生成する、請求項10に記載の方法。
- 前記転写因子が、PDX1及び/又はNKX6.1である、請求項10に記載の方法。
- 請求項10に記載の方法によって産生される、前記分化した膵臓前駆細胞の集団を含む、移植可能な幹細胞由来の細胞産物。
- 凝集した多能性幹細胞クラスタの分化のためのバイオリアクター培養系であって、
懸濁培地内で維持される多能性幹細胞クラスタであって、前記幹細胞クラスタが、CD9、SSEA4、TRA−1−60、及びTRA−1−81を発現し、CXCR4の発現を欠く、多能性幹細胞クラスタと、
ガラス攪拌懸濁バイオリアクターと、
分化培地と、
温度、pH、及び酸素を調節するための制御と、を含む、バイオリアクター培養系。 - 前記懸濁培地が、mTeSR培地である、請求項15に記載のバイオリアクター培養系。
- 動的に撹拌される懸濁培養系内で多能性幹細胞を増大させ、分化させる方法であって、
a.平面接着培養系で多能性幹細胞を成長させる工程と、
b.酵素を使用して、前記多能性幹細胞を前記平面接着培養系から除去する工程と、
c.前記多能性幹細胞を静的培養物内のマイクロキャリアに接着させる工程と、
d.前記マイクロキャリアに接着される前記多能性細胞を、動的に撹拌される懸濁培養系内で増大させる工程と、
e.動的に撹拌される懸濁培養系内の前記多能性細胞を、膵臓前駆細胞集団に分化させる工程と、を含む、方法。 - 前記動的撹拌される懸濁培養系が、スピナフラスコを含む、請求項17に記載の方法。
- インスリンを産生する膵臓細胞を産生するための方法であって、前記インスリン産生細胞が、懸濁培養系内で多能性幹細胞から産生され、前記多能性幹細胞が、懸濁培養系内で凝集体として培養される、方法。
- 前記懸濁分化環境が、およそ無酸素〜周囲の約30%の酸素範囲、0.1%〜約2%の範囲内の脂質、又はこれらの組み合わせを含む、請求項19に記載の方法。
- 前記細胞が、約11mM未満のグルコースの存在下で懸濁培養系内にある、請求項19に記載の方法。
- 前記細胞が、約25mMを超えるグルコースの存在下で懸濁培養系内にある、請求項19に記載の方法。
- 平面又は接着培養系から多能性細胞の懸濁培養を開始するための非酵素的方法であって、移動される前記細胞の前記多能性が維持され、前記平面培養物をキレート剤で処理することを含む、方法。
- 分化のために十分な条件下で、多能性細胞を凝集した細胞クラスタとして培養することを含む、短尾奇形の誘導を増加させるための方法。
- 細胞周期のG0/G1相における細胞の百分率を増加させるための方法であって、前記方法が、小分子を使用して、多能性細胞を凝集した細胞クラスタとして培養して、多能性状態からの分化を誘導することを含む、方法。
- 前記小分子が、MCXである、請求項25に記載の方法。
- 18〜30時間以内の胚体内胚葉を通して、懸濁培養系内で多能性細胞を分化させるための方法であって、前記培養培地が、アクチビンA、WNT3A、又はいかなるTGFβ族も含まず、前記方法が、少なくとも1つの小分子を含む培養培地を含む、方法。
- 前記小分子が、MCXである、請求項27に記載の方法。
- 懸濁培養系内の細胞を胚体内胚葉に分化させる方法であって、前記培養培地が、MCX及びGDF8、又はWNT3A及びアクチビンAを含む、方法。
- 無酸素を誘導することによって分化させるために、閉鎖系懸濁培養系内の多能性細胞の分化を指向する方法。
- 懸濁培養系内の細胞の、膵臓運命への分化を指向する方法であって、前記培養培地が、ノギンを含まない、方法。
- 前記培養培地が、プロテインキナーゼC作動薬、TPPB、又はこれらの組み合わせを含有する、請求項31に記載の方法。
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CN105705634A (zh) | 2016-06-22 |
AU2013370228A1 (en) | 2015-07-09 |
RU2687379C2 (ru) | 2019-05-13 |
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EP2938722B1 (en) | 2021-12-08 |
SG11201505119UA (en) | 2015-07-30 |
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PH12015501477A1 (en) | 2015-09-21 |
WO2014106141A1 (en) | 2014-07-03 |
RU2018108090A (ru) | 2019-02-25 |
EP2938722A1 (en) | 2015-11-04 |
EP2938722A4 (en) | 2017-03-22 |
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US20140242693A1 (en) | 2014-08-28 |
EP4039798A1 (en) | 2022-08-10 |
KR20150103203A (ko) | 2015-09-09 |
HK1217727A1 (zh) | 2017-01-20 |
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DK2938722T3 (da) | 2022-02-14 |
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CA2896750A1 (en) | 2014-07-03 |
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