JP7097698B2 - 幹細胞材料およびその製造方法 - Google Patents
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Description
(a)培地交換の24時間以内で、少なくとも4.5 mMの乳酸塩を産生することができる;
(b)培地交換の24時間以内で、少なくとも150 pg/mlのGRO/KCを産生することができる;
(c)培地交換の24時間後のOPGの産生量が250 pg/ml未満である;
あるいは(d)培地交換の24時間後のTGF-β3の産生量が80 pg/ml未満である。
別の態様によれば、0.7×106個の細胞を75cm2フラスコに播種し少なくとも150時間培養した場合:
(e)培地交換の24時間以内に培養培地のpHが7.0未満に低下する;
もしくは(f)培地交換の24時間以内に培養培地のpHが細胞の非存在下での培養培地のpHから少なくとも0.4単位減少する。培養培地はCO2を5%添加したRPMI-1640培地としてもよい。さらに、同じ幹細胞株は、pH7.05未満で少なくとも1つの集団が倍増され得る。幹細胞株はまた、CD29とCD44マーカーの陽性発現および、CD11bとCD45マーカーの陰性発現によっても特徴づけられることがある。
本発明の別の態様では、馴化培地は少なくとも以下の1つを満たすことができる:
(a)GRO/KCの含有量が少なくとも500 pg/ml、
(b)VEGFの含有量が少なくとも4000 pg/ml、
(c)OPGの含有量が250 pg/ml未満、
もしくは
(d)TGF-β3の含有量が80 pg/ml未満。
他の態様においては、組成物は、OPGの含有量が250 pg/ml未満、またはTGF-β3の含有量が80 pg/ml未満の馴化培地を含めることができる。
(1)hb-MSC、hb-MSCの培養によって調整された培地、あるいはそれらの任意の組み合わせ;および
(2)適切な担体。
hb-MSC、hb-MSCによって調整された培地、およびhb-MSC組成物は、任意の状態で使用され、当技術分野で周知の任意の方法を用いて送達され、様々な用途に使用することが可能である。
(1)初代ラット骨髄細胞から継代No.1細胞を確保する;
(2)p1ラット間葉系幹細胞を適正なフラスコに播種する;
(3) 最初のインキュベーション工程、この工程で、最初の細胞インキュベーション時間の間、最初に設定されたCO2濃度で細胞がインキュベーションされる;
(4)第二のインキュベーション工程、この工程で、2番目の細胞インキュベーション時間の間、2番目に設定されたCO2濃度で細胞がインキュベーションされる;
(5)hb-MSCの採取。
(1)培養フラスコの表面上に細胞を播種すること(例えば175 cm2の表面積上におよそ2.0×106個の細胞);
(2)培養培地を追加すること(例えばRPMI-1640);
(3)特定のCO2雰囲気の設定;
(4)適正な温度(例えば37℃)に設定されたインキュベーターに培養フラスコを入れる;
(5)培養フラスコ内の細胞を所定の期間(「所定の培養期間」)維持する;
(6)細胞増殖のために、必要に応じて新鮮な培養培地を供給する;そして
(7)細胞の剥離および再播種。
PCR分析を使用して、細胞が実際にラット由来であることを確認した。PCR分析のために、COX-1およびVN1R1遺伝子をそれぞれミトコンドリアおよび核DNAのために用いた。多重PCR法を用いてCOX-1遺伝子の増幅を行い、標準PCRを用いてVN1R1遺伝子の増幅を行った。38歳のヒト男性、32歳のヒト女性およびウィスターラットからの血液サンプルを対照として使用した。市販のキット(PREP-GS-GENETICS、DNA Technology社、ロシア)を製造業者の指示に従って使用し、細胞培養物からDNAを分離した。全てのプライマーは市販されており、Evrogen LLC社から購入した。
・ COX1-human:
f`-TAGACATCGTACTACACGACACG
および
r`-TCCAGGTTTATGGAGGGTTC
・COX1-rat:
f`- CGGCCACCCAGAAGTGTACATC
および
r`- GGCTCGGGTGTCTACATCTAGG
・VN1R1-human:
f`-TGGTCTGGGCCAGTGGCTCC
および
r`-GAGTGTTTTCCTTGTCCTGCAGGCA
・VN1R1-rat:
f`- AGAAGAGTTACTGGCCCAAGGGACA
および
r`-GGGGCTGAACGCTGGGAAGC
標準的な条件下で得られたラット間葉系幹細胞を培養し、固有の分離されたhb-MSC株と典型的なラット間葉系幹細胞(rb-MSC)との間の差異を示すために評価した。
hb-MSC株を得るために、p1ラット間葉系細胞を以下の手順に従って培養した。最初に、p1細胞をCa2+-Mg2+フリーのハンクス溶液(Sigma社、米国、H9394-500ml)で洗浄し、0.25%トリプシンEDTA溶液(Sigma社、米国、T4424-100ml)と共に、37℃で5~10分間インキュベートすることにより剥離した。次に、5%FBS(Sigma社、米国、F6765)添加ハンクス溶液を加え、トリプシンを不活性化した。細胞を200Gで10分間遠心分離し、15%FBSを補充した1~2mlのRPMI-1640培地に再懸濁し、ノイバウエル計算盤を備えた血球計数グリッドを用いて手作業で計数した。次に、15%FBS(Sigma社、米国、F6765)、100単位/ mlペニシリン-100μg/ mlストレプトマイシン(Sigma社、米国、P4458)、100ng/mlアムホテリシン(Sigma社、米国、A2942)、2mM Lグルタミン(Sigma社、米国、G7513)、RPMI-1640培地用0.005ml/mlビタミン(100x)(Sigma社、米国、R7256)、RPMI-1640培地用0.005ml/mlアミノ酸(Sigma社、米国、R7131)を添加したRPMI-1640培地(Sigma社、米国、R5886)を用いて、75 cm2フラスコに1.0×106個細胞/フラスコの密度で細胞をp2として播種した。透過性の無菌フィルターキャップを有するフラスコを、CO2濃度5%雰囲気の加湿インキュベーター内で、37℃でインキュベートした。FBSを15%添加したRPMI-1640培地を、10~14日の期間にわたり、または70%コンフルエントに達するまで、3日ごとに交換した。
hb-MSCおよびrb-MSC株の細胞表面マーカーを識別するために、フローサイトメトリー実験を行った。この実験の目的のために、50μlの対応する抗体を100μlの細胞懸濁液に添加した。懸濁液を5秒間、高速旋回攪拌(BioVortexV1、BioSan)し、光を遮断した状態で+4℃で30分間静置した。インキュベーション後、混合物を500μlの食塩水で希釈し、遠心分離により2回洗浄して過剰の試薬を除去した。各遠心分離は400Gで10分間(ELMI)行った。各サンプルにおいて、少なくとも10,000カウントを分析した。WinMDI2.7分析プログラムを用いて分析した結果を、図1に示す。rb-MSCおよびhb-MSC株によって発現される表面マーカーの概要を以下の表1に示す。
形態計測学的研究を、実験用マウスの創傷治癒過程を追跡するために行った。すべての動物実験は、K.I. Scriabinにちなんで命名されたモスクワ州獣医学および生物工学アカデミーの獣医手術部門で行われた。全ての実験には、生後3~5ヶ月、体重が約22~25グラムの白色の実験用マウスを使用した。各実験で合計6匹のマウスを使用した。各麻酔された動物の新たに剃毛された肩甲骨領域を直径約0.5cmの大きさで切開した。切開後、動物を1群あたり3匹のマウスで対照およびサンプル群に分類した。それぞれの創傷を撮影して、デジタル形態計測パラメータを得た。切開30分後に、各創傷をRPMI-1640またはhb-MSC組成物の50μl滴で処置した。この実施例では、hb-MSC組成物は、実施例8に記載のようなhb-MSC馴化培地を含み、異なる調整時間(96、144、192、216、240、264および288時間)ごとに採取された馴化培地は一つの容器にまとめられた。組成物はまた、防腐剤としての塩化ベンザルコニウム(BEK)、および界面活性剤としてのトリトンX-100を含んでいた。創傷サイズを15日間、毎日1回測定した。hb-MSC組成物およびRPMI-1640を、創傷評価後、1日1回、各群の各動物に適用した。hb-MSC組成物およびRPMI-1640培地で処置した創傷の比較治癒過程を示すデジタル画像を図4に示す。図4は、処置後1日目の対照群(RPMI-1640で処置した)のマウス、および処置後9日目の同じマウスを示す。図4はまた、処置の1日目のサンプル群(hb-MSC組成物で処置した)のマウス、および処置後9日目の同じマウスを示す。hb-MSC組成物対RPMI-1640を用いた平均創傷サイズに対する処置の効果を図5に示す。
hb-MSC組成物の治療効果をテストするために、実験は、イヌ(65+)、ネコ(80+)、ウマ(40+)、家畜(25+)、げっ歯類(200+)、鳥類(15+)など、様々な動物に実施された。hb-MSC組成物は、上記の実験被検体における様々な状態を治療するために使用された。本実施例で用いたhb-MSC組成物は、実施例5と同様のものであった。これらの治療法には以下のものが含まれる:
1)手術後の切開部位を含む創傷適用;
2)化学火傷を含む火傷の処置;
3)糖尿病性潰瘍を含む潰瘍;
4)瘻;
5)化膿炎症、結膜炎、角膜炎、乳腺炎、蜂窩、胃炎、皮膚炎を含む組織の炎症や細菌感染症;
6)骨折を含む整形外科適用、また;
7)皮膚、靭帯、筋肉組織を含む様々な組織の治療。
実験では、以下の方法で、hb-MSC組成物を送達した:局所、経口、経鼻、静脈、皮下、皮内、経皮、筋肉内および腹腔内。また、hb-MSC組成物は、エアゾールとして滅菌ナプキンを使用し、患部に直接適用した(乳頭ディップカップを含む)。hb-MSC組成物は、上記のすべての状態の治療に有効で、再生効果改善、創傷閉鎖速度、炎症および局所細菌の転移増殖の著しい減少、抗菌作用、血管新生および脈管形成、組織の瘢痕の減少と患部の毛包の修復を示した。これらの実験で示された実質的な再生効果は、実施例5で説明したマウス創傷実験の結果と一致した。いずれの場合も、動物はhb-MSC組成物で治療した後、健康状態を維持した。すべてのケースにおいて、毒性、刺激、感作と生体内蓄積が評価された。hb-MSC組成物の投与から30日以内の全動物に対する全追跡指標は、血液検査によって評価されたように正常範囲内に留まった。腎臓、肝臓、肺、脾臓、腸、軟組織の組織像は、hb-MSC 組成物の適用による急性または慢性毒性の兆候を示さなかった。また、アレルギー反応、感染症、または他の副作用が記録された実例もなかった。
まとめると、これらの実験によって、火傷治療、スキンケア、血管新生、脈管形成、臓器または組織の治癒、化粧品、組織炎症、細菌感染症、創傷適用、糖尿病、薬学および眼科学用途、瘢痕の削減、育毛促進、免疫療法の適用と免疫矯正療法、皮膚や骨髄または臓器の移植、臓器や組織の治療、またはその他の病気の治療を含むヒトと動物の多種多様な状態の安全かつ効果的な治療のために、hb-MSC組成物を使用することができることが示された。
培養培地におけるhb-MSCとrb-MSCの影響を比較するために、各細胞株をそれぞれ、9個の別々の75cm2フラスコに0.7×106個細胞/フラスコの密度で播種した。細胞は、37℃に設定されたインキュベーター内でCO2を5%添加したRPMI-1640/10% FBSで継代された。細胞フラスコは、ガス透過性の蓋で封じた。24、48、96、144、192、216、240、264および288 時間の、合計9期間、分析した。一つの細胞フラスコを、所定の時間ごとに分析した。培地は、3日(72時間)、5日(120時間)、7日(168時間)、そしてその後毎日、残りのすべての試料瓶で交換した。9期間のそれぞれで、培地の乳酸塩濃度とpHを測定した。48時間の測定を除いて、培地が交換されてから24時間後に測定が行われるように、期間を選択した。乳酸塩は、生化学分析器を活用し、SPINREACT の乳酸塩特性決定キットを用いて三重に測定した。pHは電子pH計(METTLER TOLEDO社、InLab Versatile Pro)を用いて測定した。細胞数もそれぞれの期間で測定し、細胞は、7.05未満のpHで倍増する少なくとも1つの集団を形成した。
rb-MSCおよびhb-MSC株は、株が培地で維持されているときに、各株によって生成された因子を比較することによって区別することができる。hb-MSCとrb-MSCによって産生された因子を比較するために、各細胞株を、7つの別々の75cm2フラスコに、0.7×106個細胞/フラスコの密度で播種した。37°Cに設定されたインキュベーター内で、CO2を5%添加したRPMI-1640/10% FBSで細胞が継代された。当業者は、添加血清の追加は、調整前の培地中の因子の開始濃度に影響を与えることを理解するだろう。細胞フラスコをガス透過性のキャップで封じた。96、144、192、216、240、264、および288 時間の、合計7期間、分析した。一つの細胞フラスコを、所定の時間ごとに分析した。培地は、3日(72時間)、5日(120時間)、7日(168時間)、そしてその後毎日、残りのすべての試料瓶で交換した。培地が交換されてから24時間後に測定が行われるように、期間を選択した。因子分析は、Eve Technologies Rat Cytokine Array/Chemokine Array 27-Plex Panel、TGF-Beta 3-Plex Cytokine ArrayとRat Bone 1-Plex Arrayを使用して実施された。表1で比較した具体的因子は、インターロイキン10(IL-10)、インターフェロンガンマ誘発タンパク質10 (IP-10)、CXCL1(GRO/KC)、血管内皮細胞増殖因子(VEGF)、破骨細胞形成抑制因子(OPG)、形質転換増殖因子β1(TGF-β1)、形質転換増殖因子β2(TGF-β2)、形質転換増殖因子β3(TGF-β3)である。当業者には理解されているように、多重測定値は検量線に依存し、従ってある程度変化する可能性があることを理解されるべきである。
Claims (13)
- ロシア国立工業用微生物コレクション(VKPM)に受託番号H-154として寄託された間葉系幹細胞株の複数の間葉系幹細胞により調整された馴化培地であって、
少なくとも760pg/mlの血管内皮細胞増殖因子(VEGF)と、
少なくとも460pg/mlのCXCL1(GRO/KC)と、
形質転換増殖因子β1(TGF-β1)と、
少なくとも170pg/mlの形質転換増殖因子β2(TGF-β2)と、
を含む、馴化培地。 - 前記血管内皮細胞増殖因子(VEGF)の含有量が少なくとも8000 pg/mlである、請求項1に記載の馴化培地。
- 請求項1記載の馴化培地であって、
0以上250pg/ml未満の破骨細胞形成抑制因子(OPG)及び/又は
0以上80pg/ml未満の形質転換増殖因子β3(TGF-β3)と、
を含む馴化培地と、許容される担体と、を含む治療用途のために被験体に投与するための組成物。 - 少なくとも150 pg/mlのTGF-β2をさらに含有する、請求項3に記載の組成物。
- 少なくとも250 pg/mlのGRO/KCをさらに含有する、請求項3に記載の組成物。
- 前記治療用途が、火傷治療、スキンケア、皮膚の治療的処置、血管新生及び脈管形成の刺激、潰瘍の治療、創傷または損傷を伴う臓器または組織の治癒、組織炎症の治療、細菌感染症の治療、創傷適用、瘻の治療、眼科創傷または潰瘍の治癒、結膜炎、角膜炎、瘢痕の削減、発毛促進、患部の毛包の修復、腱および靱帯の治療、皮膚や骨髄または臓器の移植に伴う創傷の治癒、および臓器や組織の治療から成るグループから選択される1つ以上の用途である請求項3に記載の組成物。
- 前記組成物が、注入、インプラント、または局所適用するための請求項6に記載の組成物。
- 防腐剤および界面活性剤をさらに含む、請求項3に記載の組成物。
- 前記防腐剤が、1つ以上のチメロサール、クレゾール、ホルマリン、塩化ベンザルコニウム、またはベンジルアルコールであり、界面活性剤がトリトンX-100である、請求項8に記載の組成物。
- 前記馴化培地は、0以上250 pg/ml未満の破骨細胞形成抑制因子(OPG)を更に含み、
前記馴化培地中の血管内皮細胞増殖因子(VEGF)の量が、前記破骨細胞形成抑制因子(OPG)の量より少なくとも5倍多い、請求項1に記載の馴化培地。 - 前記馴化培地がインターロイキン10(IL-10)及び/又はインターフェロンガンマ誘発タンパク質10 (IP-10)を更に含む請求項1に記載の馴化培地。
- 少なくとも4000pg/mlの血管内皮細胞増殖因子(VEGF)、
少なくとも1000pg/mlのCXCL1(GRO/KC)、
少なくとも750pg/mlの形質転換増殖因子β1(TGF-β1)、及び
少なくとも250pg/mlの形質転換増殖因子β2(TGF-β2)を含有する、請求項1に記載の馴化培地。 - 前記担体が、液体、クリーム、エアゾール、ローション、軟膏、およびヒドロゲルから成るグループから選択される、請求項3に記載の組成物。
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KR20170089924A (ko) | 2017-08-04 |
EP3226876A4 (en) | 2017-10-11 |
EA201791233A1 (ru) | 2017-09-29 |
JP2021072789A (ja) | 2021-05-13 |
RU2644650C2 (ru) | 2018-02-13 |
US20170326178A1 (en) | 2017-11-16 |
IL252529A0 (en) | 2017-07-31 |
CN107429228A (zh) | 2017-12-01 |
RU2014148251A (ru) | 2016-06-27 |
US20200360443A1 (en) | 2020-11-19 |
RU2017123284A3 (ja) | 2019-06-24 |
IL252529B (en) | 2021-08-31 |
WO2016089252A1 (en) | 2016-06-09 |
JP2017536849A (ja) | 2017-12-14 |
KR102257386B1 (ko) | 2021-05-27 |
US10744160B2 (en) | 2020-08-18 |
EP3226876A1 (en) | 2017-10-11 |
RU2017123284A (ru) | 2019-01-09 |
EP3226876B1 (en) | 2023-11-01 |
JP7116501B2 (ja) | 2022-08-10 |
CN107429228B (zh) | 2024-04-05 |
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