JP7444267B2 - 中枢神経疾患の治療用組成物、中枢神経疾患の治療用組成物の製造方法および中枢神経疾患の治療用製剤の製造方法 - Google Patents
中枢神経疾患の治療用組成物、中枢神経疾患の治療用組成物の製造方法および中枢神経疾患の治療用製剤の製造方法 Download PDFInfo
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Description
本発明の一実施形態にかかる中枢神経疾患の治療用組成物の製造方法(以下、「本実施形態の製造方法」ともいう。)は、無血清培地中で滑膜由来の間葉系幹細胞を培養する工程を含む方法である。
本実施形態の製造方法において、滑膜由来の間葉系幹細胞を培養する無血清培地の組成は特に限定されず、公知の無血清培地の組成を適宜使用することができる。無血清培地を構成するための基礎培地は、公知の哺乳動物細胞用培地であれば特に限定されず、好ましい基礎培地としては、例えば、Ham’s F12培地、DMEM培地、RPMI-1640培地、MCDB培地等が挙げられる。これらの基礎培地は、単独で使用されても、複数を混合して使用されてもよい。一実施形態において、無血清培地を構成するための基礎培地は、MCDBとDMEMとを1:1の比率で混合した培地が好ましい。
本実施形態の製造方法では、上述した無血清培地に、ヒト等の動物組織または細胞から従来公知の方法により単離された滑膜由来の間葉系幹細胞を播種し培養する。培養条件として、例えば、培地1mLに対して1~500mgの組織片(間葉系幹細胞を含む)から分離した滑膜由来の間葉系幹細胞を播種することが好ましく、培養温度は37℃±1℃、かつ5%CO2下であることが好ましい。
本発明の一実施形態にかかる中枢神経疾患の治療用組成物(以下「本実施形態の治療用組成物」という。)は、無血清培地中で培養された滑膜由来の間葉系幹細胞を含有している。
本発明の一実施形態にかかる中枢神経疾患の治療用製剤の製造方法(本実施形態の治療用製剤の製造方法)は、無血清培地中で培養された滑膜由来の間葉系幹細胞を、凍結のための保存液に懸濁し、得られた懸濁液を凍結する凍結保存工程と、前記懸濁液を融解し、前記間葉系幹細胞が投与に適した濃度となるように、前記懸濁液を希釈する工程と、を含む。
(脳梗塞に対する滑膜由来の間葉系幹細胞の有効性評価)
無血清培地中で培養された滑膜由来の間葉系幹細胞の移植による脳梗塞の後遺症の改善に係る検討を行った。
実施例(A)および比較例(B)の脳梗塞モデルラット群について、神経症状の観察を行い、行動学的評価を行った。個体別に、(1)前肢麻痺、(2)後肢麻痺、(3)回転運動、(4)体側面抵抗性および(5)一般状態の5項目について0~12(病態:数値が高いほど悪い)でスコア化し、5項目の合計を神経症状スコアとして評価した。
続いて、実施例(A)および比較例(B)の脳梗塞モデルラット群について、脳梗塞巣の容積を測定し、組織学的評価を行った。神経症状の観察後、全脳を摘出し、ラット用ブレインマトリックスを用いて切片を作製した。各切片を2% 2,3,5-Triphenyltetrazolium chloride(TTC)を含む生理食塩液中で染色し、脳梗塞巣容積定量用画像をスキャナーで取り込んだ。当該画像を、OsiriX version 8.0.2(Pixmeo SARL)にてTTC非染色部分を脳梗塞巣としてマーキングし、面積を測定した。面積の測定は、大脳皮質および基底核について実施した。各断面の脳梗塞巣の面積と断面厚(2mm)の積から大脳皮質および基底核の総脳梗塞巣(mm3)を算出し、これらの合計を総脳梗塞巣容積とした。
(脊髄損傷に対する滑膜由来の間葉系幹細胞の有効性評価)
無血清培地中で培養された滑膜由来の間葉系幹細胞の移植による脊髄損傷の後遺症の改善に係る検討を行った。
〔実施例1〕と同様に、滑膜由来の間葉系幹細胞を培養した。続いて、中枢神経疾患の一例として、MASCIS Impactorを用いた50mm重錘落下法による脊髄損傷モデルのラットを作製した。
図5に後肢運動機能評価の測定結果を示す。なお、BBBスコアの統計解析は、Kruskal-Wallisの検定法で解析し、統計学的有意性の検討を行い、危険率5%未満を有意差ありとした。
〔実施例1〕と同様に、滑膜由来の間葉系幹細胞を培養した。続いて、中枢神経疾患の一例として、実験例2-1とは異なるラットを用いて、MASCIS Impactorを用いた50mm重錘落下法による脊髄損傷モデルのラットを作製した。
図6に後肢運動機能評価の測定結果を示す。なお、BBBスコアの統計解析は、t検定法で解析し、統計学的有意性の検討を行った。p値が0.10未満の場合を有意傾向ありとした。図6の測定結果において、統計的な有意傾向を、「†:P<0.10」として示す。
Claims (3)
- 無血清培地中で培養された滑膜由来の間葉系幹細胞を含有している、中枢神経疾患の治療用組成物であって、
前記中枢神経疾患は、脳梗塞、脳出血、頭部外傷、脊髄損傷、アルツハイマー病、脳血管性認知症、パーキンソン病、ハンチントン病、多発性硬化症および筋萎縮性側索硬化症の、少なくともいずれか1つである、中枢神経疾患の治療用組成物。 - 無血清培地中で滑膜由来の間葉系幹細胞を培養する工程を含む、前記無血清培地中で培養された前記間葉系幹細胞を含有している中枢神経疾患の治療用組成物の製造方法であって、
前記中枢神経疾患は、脳梗塞、脳出血、頭部外傷、脊髄損傷、アルツハイマー病、脳血管性認知症、パーキンソン病、ハンチントン病、多発性硬化症および筋萎縮性側索硬化症の、少なくともいずれか1つである、中枢神経疾患の治療用組成物の製造方法。 - 無血清培地中で培養された滑膜由来の間葉系幹細胞を、凍結のための保存液に懸濁し、得られた懸濁液を凍結する凍結保存工程と、
前記懸濁液を融解し、前記間葉系幹細胞が投与に適した濃度となるように、前記懸濁液を希釈する工程と、を含む、前記間葉系幹細胞を含有している中枢神経疾患の治療用製剤の製造方法であって、
前記中枢神経疾患は、脳梗塞、脳出血、頭部外傷、脊髄損傷、アルツハイマー病、脳血管性認知症、パーキンソン病、ハンチントン病、多発性硬化症および筋萎縮性側索硬化症の、少なくともいずれか1つである、中枢神経疾患の治療用製剤の製造方法。
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JP4385076B2 (ja) | 2006-01-13 | 2009-12-16 | 独立行政法人科学技術振興機構 | 動物細胞を無血清培養するための培地用添加剤、キット及びこれらの利用 |
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US20230302055A1 (en) | 2023-09-28 |
JPWO2022049977A1 (ja) | 2022-03-10 |
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