JP2018503375A - 多能性幹細胞のマクロファージへの分化 - Google Patents
多能性幹細胞のマクロファージへの分化 Download PDFInfo
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Abstract
Description
本出願は、2015年1月16日出願のシンガポール特許出願第10201500366V号の優先権の利益を請求する;このシンガポール特許出願は、その内容全体が全ての目的で参照により本明細書に組み込まれている。
(a)前記幹細胞を、GSK3阻害剤を含む無血清培地と接触させてインキュベートし、前記幹細胞の中胚葉系列の細胞への分化を誘導するステップと、
(b)中胚葉系列の前記細胞を、DKK1を含む培地と接触させてインキュベートし、中胚葉系列の細胞を造血細胞系列の細胞に分化させるステップと、
(c)造血細胞系列の前記細胞を成熟させるステップと、
(d)造血細胞系列の前記成熟細胞を、M−CSFを含む培地と接触させてインキュベートし、前記造血細胞の原始様マクロファージへの分化をドライブするステップと
を含む方法を提供する。
(a)前記幹細胞を、FGF2及びBMP4を含む無血清培地と接触させてインキュベートし、前記幹細胞の中胚葉系列の細胞への分化を誘導するステップと、
(b)中胚葉系列の前記細胞を、FGF2、BMP4、アクチビンA及びVEGFを含む培地と接触させてインキュベートし、中胚葉系列の細胞を造血細胞系列の細胞に分化させるステップと、
(c)造血細胞系列の前記細胞を成熟させるステップと、
(d)造血細胞系列の前記成熟細胞を、M−CSFを含む培地と接触させてインキュベートし、前記造血細胞の原始様マクロファージへの分化をドライブするステップと
を含む方法を提供する。
最良のモードを含む、本発明の非限定的な例、及び比較例を、具体的な実施例を参照することにより、より詳細にさらに記載する;いかなる場合であっても、これらの実施例が本発明の範囲を限定すると解釈してはならない。
mESC/miPSCがMEF上で増殖したら、ゼラチンコート6ウエルプレート上で1〜2回継代することによって、MEFを枯渇させてから、分化を開始する。
75%のIMDM/25%のF12
0.5×のN2サプリメント
0.5×のB27サプリメント(レチノイン酸を含有しない)
1×のpen/strep
0.05%のBSA
2mMのL−グルタミン
0.5mMのアスコルビン酸
4.5×10−4Mの1−チオグリセロール
StemPro-34 SFM(Invitrogen社)
1×のpen/strep
2mMのL−グルタミン
200μg/mlのトランスフェリン
0.5mMのアスコルビン酸
4.5×10−4Mの1−チオグリセロール
分化の戦略を、4つの段階、すなわち、原条/中胚葉の誘導、造血系への指定(hematopoietic specification)、造血細胞の成熟、そして最後に、最終の骨髄の増殖に分けることができる。各段階の実験の詳細を、図1及び図2に示し、下記に記載する。
サプリメント及び1×のpen/strepを加えたStemPro 34(Invitrogen社)
2mMのグルタミン
1×のアポ−トランスフェリン
4×10−4Mのモノチオグリセロール(MTG、monothioglycerol)
50μg/mlのアスコルビン酸(AA、ascorbic acid)
1×のpen/strepを加えた75%のIMDM/25%のHam's F-12
0.5×のB27サプリメント(レチノイン酸を含有しない)
0.5×のN2サプリメント
2mMのグルタミン
4×10−4Mのモノチオグリセロール
50μg/mlのアスコルビン酸
第0日:増殖培地を、BMP4(5ng/ml)、VEGF(50ng/ml)、CHIR99021(2μM)を含有するDM1と交換する。5%のO2下で培養する;
第2日:培地を、BMP4(5ng/ml)、VEGF(50ng/ml)、FGF−2(20ng/ml)を含有するDM1と交換する。5%のO2下で培養する;
第4日:培地を、VEGF(15ng/ml)、FGF−2(5ng/ml)を含有するDM1と交換する。5%のO2下で培養する;
第6日:培地を、VEGF(10ng/ml)、FGF−2(10ng/ml)、SCF(50ng/ml)、DKK1(30ng/ml)、IL−6(10ng/ml)、IL−3(20ng/ml)を含有するDM1と交換する。5%のO2下で培養する;
第8日、第10日:培地を、VEGF(10ng/ml)、FGF−2(10ng/ml)、SCF(50ng/ml)、DKK1(30ng/ml)、IL−6(10ng/ml)、IL−3(20ng/ml)を含有するDM1と交換する。細胞を、正常酸素圧の条件(20%のO2)に戻す;
第12日、第14日:培地を、FGF−2(10ng/ml)、SCF(50ng/ml)、IL−6(10ng/ml)、IL−3(20ng/ml)を含有するDM1と交換する;
第16日、第18日、第20日:培地を、MCSF(50ng/ml)を含有するDM2と交換する。
6ウエルプレート中の3ml培地/ウエルの体積を推奨する。
貪食作用アッセイを、第12日に選別したiPSC由来原始マクロファージ(CD163+CD11b+HLA−DR+IBA−1+CX3CR1+CD14+)を用いて実施した;このマクロファージは、患者由来WT iPSCから分化させてあり、その発現プロファイルは、CD45+CD11b+及びCD163+である。具体的には、第12日に選別したiPSC由来原始マクロファージを、マクロファージ及びミクログリアとしての、それらの貪食能力を評価するために、蛍光標識したラテックスビーズ又はアミロイドAβペプチドに曝露させた。
マクロファージの貪食能力を分析するための方法は、ハンチントン病ヒトiPSC(HD33i)の対照株に由来する原始マクロファージを使用し、これらのマクロファージは、10%のFCSを含有するIMDMを用いて再構成し、24ウエル皿上に(5.0×104細胞/ウエルで)播種し、空気中に5%のCO2を有する完全に加湿した雰囲気下、37℃で一晩かけて定着させた。
本明細書に記載する方法により得たiPSC由来原始マクロファージを、ニューロンと共に共培養した。
本明細書に記載する分化の方法を採用して、ヒトiPSC(HD33i)からニューロンを誘導した。80パーセント(80%)の培養密度のiPSCを、DMEM/F12を用いて2回洗浄し、accutaseを用いて単一細胞に解離させた。細胞を、ニューロン前駆細胞(NPC、neuron precursor cell)+培地を用いて再懸濁し、マトリゲルコート6ウエル皿上に蒔いた。NPC+培地を、NPCの誘導のために、7日間毎日交換した。次いで、NPCを、マトリゲルコート6ウエル皿上で、10μMのROCK阻害剤を加えたNPC−培地中に1:3の希釈度で分割し、続いて、EGF(20ng/ml)及びbFGF(20ng/ml)を補充したNPC−培地を用いて数回継代して、馴化させた。ニューロンへの最終の分化のために、コンフルエントなNPCを、accutaseを用いて単一細胞に解離させ、ニューロン用分化培地を用いて再懸濁させ、24ウエル皿中のポリ−L−オルニチン及びラミニンを用いてコートしたカバーガラス上に(5.0×104細胞/ウエルで)播種した。
肺胞蛋白症のCSF2aR−KOマウス(CD45.2)マウスモデルを、iPSC由来原始マクロファージの効果を試験するのに使用した。
Claims (37)
- 幹細胞から原始様マクロファージを培養するための方法であって、
(a)前記幹細胞を、GSK3阻害剤を含む無血清培地と接触させてインキュベートし、前記幹細胞の中胚葉系列の細胞への分化を誘導するステップと、
(b)中胚葉系列の前記細胞を、DKK1を含む培地と接触させてインキュベートし、中胚葉系列の前記細胞を造血細胞系列の細胞に分化させるステップと、
(c)造血細胞系列の前記細胞を成熟させるステップと、
(d)造血細胞系列の前記成熟細胞を、M−CSFを含む培地と接触させてインキュベートし、前記造血細胞の原始様マクロファージへの分化をドライブするステップと
を含む、前記方法。 - 幹細胞が、胚性幹細胞(ESC)及び誘導多能性幹細胞(iPSC)から選択される、請求項1に記載の方法。
- 幹細胞が、ヒトH1胚性幹細胞(ESC)である、請求項2に記載の方法。
- 幹細胞が、ヒト誘導多能性幹細胞(iPSC)である、請求項2に記載の方法。
- GSK3阻害剤が、6−ブロモインディルビン−3’−オキシム(BIO)、CHIR−99021、SB216763、CHIR−98014、TWS119、IM−12、1−アザケンパウロン、AR−A014418、SB415286、AZD1080、AZD2858、インディルビン、A1070722、TCS2002、チデグルシブ、又はそれらの任意の誘導体である、請求項1〜4のいずれかに記載の方法。
- 請求項1に記載のステップ(a)の少なくとも24時間前に、幹細胞を、マトリゲルコート6ウエルプレート上に、1cm2当たり1未満の小型コロニーの密度で播種する、請求項1〜5のいずれかに記載の方法。
- 請求項1に記載のステップ(a)の前に、幹細胞を、80%のDMEM/F12、20%のノックアウト血清代替品、L−グルタミン、非必須アミノ酸、ベータ−メルカプトエタノール及びFGF−2を含む培地を用いてインキュベートする、請求項1〜6のいずれかに記載の方法。
- 幹細胞を、培地中で約1日間インキュベートする、請求項7に記載の方法。
- 請求項1に記載のステップ(a)において、幹細胞を、1〜20ng/mlのBMP4、5〜100ng/mlのVEGF、0〜50ng/mlのFGF−2及び0〜10μMのCHIR99021を含む分化培地と接触させる、請求項1〜8のいずれかに記載の方法。
- 分化培地が、Invitrogen社製のStemPro(登録商標)34である、請求項9に記載の方法。
- 細胞を、約5%の酸素濃度下で、培地を用いて約2日間インキュベートする、請求項9又は10に記載の方法。
- ステップ(a)において、細胞を、1〜20ng/mlのBMP4及び5〜100ng/mlのVEGFとさらに接触させる、請求項1〜11のいずれかに記載の方法。
- 細胞を、約5%の酸素濃度下で、培地を用いて約2日間インキュベートする、請求項12に記載の方法。
- 請求項1に記載のステップ(b)において、細胞を、5〜100ng/mlのVEGF;0〜50ng/mlのFGF−2;0〜250ng/mlのSCF;0〜500ng/mlのDKK1;0〜50ng/mlのIL−6;及び0〜50ng/mlのIL−3を含む分化培地と接触させる、請求項1〜13のいずれかに記載の方法。
- 細胞を、約5%の酸素濃度下で、培地を用いて約3日間インキュベートする、請求項13に記載の方法。
- 請求項1に記載のステップ(c)において、細胞を、0〜50ng/mlのFGF−2;0〜250ng/mlのSCF;0〜50ng/mlのIL−3及び0〜50ng/mlのIL−6を含む分化培地と接触させることによって成熟させる、請求項1〜15のいずれかに記載の方法。
- 細胞を、正常酸素圧の条件下で、培地を用いて約7日間インキュベートする、請求項16に記載の方法。
- 請求項1に記載のステップ(d)において、細胞を、0〜100ng/mlのM−CSFを含む分化培地と接触させてインキュベートする、請求項1〜17のいずれかに記載の方法。
- 細胞を、正常酸素圧の条件下で、培地を用いて少なくとも6日間インキュベートする、請求項18に記載の方法。
- 6ウエル培養プレート中で21〜25日間培養すると、1×106/ウエルより高い、原始様マクロファージの収率をもたらす、請求項1〜19のいずれかに記載の方法。
- 原始様マクロファージを、FACSソーティング又は磁気分離を使用して単離するステップをさらに含む、請求項1〜20のいずれかに記載の方法。
- GSK3阻害剤及びDKK1を、使用説明書と共に含む、請求項1〜21のいずれかに記載の方法において使用する場合のキット。
- 請求項1〜21のいずれかに記載の方法により得られる原始様マクロファージ。
- 後に、ミクログリア細胞、肺胞マクロファージ、クッパー細胞、ランゲルハンス細胞又はその他の組織特異的マクロファージに分化させる、請求項23に記載の原始様マクロファージ。
- 疾患モデルを、インビトロで成長させるための、請求項23に記載の原始様マクロファージの使用であって、前記疾患が、神経変性疾患、代謝疾患、呼吸器疾患、心血管疾患、結合組織疾患、がん又は炎症性疾患である、前記使用。
- 疾患モデルを、インビトロで成長させるための、請求項24に記載のミクログリア細胞の使用であって、前記疾患が、神経変性疾患である、前記使用。
- 疾患を治療するための化合物をスクリーニングするための、請求項23に記載の原始様マクロファージの使用であって、前記疾患が、神経変性疾患又は代謝疾患である、前記使用。
- 疾患を治療するための化合物をスクリーニングするための、請求項24に記載のミクログリア細胞の使用であって、前記疾患が、神経変性疾患である、前記使用。
- 神経変性疾患が、アルツハイマー病、ハンチントン病又はレット症候群である、請求項25〜28のいずれかに記載の使用。
- 代謝疾患が、肥満又は糖尿病である、請求項25又は27に記載の使用。
- 呼吸器疾患が、肺胞蛋白症である、請求項25に記載の使用。
- 心血管疾患が、アテローム動脈硬化症である、請求項25に記載の使用。
- 結合組織疾患が、線維症である、請求項25に記載の使用。
- 炎症性疾患が、関節炎、実験的な自己免疫性脳脊髄炎、多発性硬化症又は炎症性腸疾患である、請求項25に記載の使用。
- 創傷治癒及び組織再生ための医薬品の製造における、請求項23に記載の原始様マクロファージの使用。
- カーゴ分子を組織内に送達するための、請求項23に記載の原始様マクロファージの使用であって、前記カーゴ分子が、免疫調節物質であるサイトカイン若しくはケモカイン、又はプロドラッグを活性化させる酵素である、前記使用。
- マウス幹細胞から原始様マクロファージを培養するための方法であって、
(a)前記幹細胞を、FGF2及びBMP4を含む無血清培地と接触させてインキュベートし、前記幹細胞の中胚葉系列の細胞への分化を誘導するステップと、
(b)中胚葉系列の前記細胞を、FGF2、BMP4、アクチビンA及びVEGFを含む培地と接触させてインキュベートし、中胚葉系列の前記細胞を造血細胞系列の細胞に分化させるステップと、
(c)造血細胞系列の前記細胞を成熟させるステップと、
(d)造血細胞系列の前記成熟細胞を、M−CSFを含む培地と接触させてインキュベートし、前記造血細胞の原始様マクロファージへの分化をドライブするステップと
を含む、前記方法。
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