JP2017039728A - 生細胞を含む生物学的薬剤の取り扱い方法 - Google Patents
生細胞を含む生物学的薬剤の取り扱い方法 Download PDFInfo
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Abstract
Description
本発明は、非栄養性緩衝液中で調製された、長期間後も細胞特徴を呈しかつ免疫療法に役立つ、生細胞生物学的薬剤製品の梱包、保存、および流通に関する。これら生細胞生物学的薬剤は、非栄養性緩衝液において約72時間経過後でも、所定の固有特性および機能特性だけでなく生存率も維持できる。
活性化細胞、特に活性化Th1細胞を有する実施形態では、細胞の非栄養性緩衝液への移行後も、細胞の活性化シグナルは維持される。例えば、細胞表面結合部の架橋により細胞が活性化される実施形態では、架橋は、非栄養性緩衝液で維持されることが好ましい。保存中に架橋を維持することは、保存からの移行後に組成物の機能特性を回復させることにとって重要である。活性化成分が非栄養性緩衝液で除去される細胞組成物は、活性化状態を維持している細胞と同様には回復しない。
実施例
材料:PE結合CD40Lをベックマン・コールター社(Beckman Coulter、米国カリフォルニア州 ブレア所在)から購入し、7―アミノ―アクチノマイシンD(7―AAD)(1000x)をケイマンケミカル社(Cayman Chemical Co.、米国ミシガン州 アナーバー所在)から購入し、プラズマライトAをバクスター サイエンティフィック社(Baxter Scientific、米国イリノイ州 ディアフィールド所在)から購入し、ヒト血清アルブミン(HSA)をマッケソン社(McKesson、米国カリフォルニア州 サンフランシスコ所在)から購入し、FcR結合阻害剤をeバイオサイエンス社(eBioscience、米国カリフォルニア州 サンディエゴ所在)から購入し、ダイナビーズクリネックスビボ(Dynabeads ClinExVivo)(商標)をインビトロジェン社(Invitrogen、米国カリフォルニア州 カールスバッド所在)から購入した。
培養で活性化される細胞(CAC)を、洗浄のためcRPMI培地に置いた。調製プロトコルの開始を示す時間を記録した。cRPMI培地の細胞を遠心分離し、上澄み液を除去し、細胞をcRPMI緩衝液中に再懸濁した。細胞生存率をトリパンブルー分析法を用いて測定した。生細胞の総数と濃度を用いて生細胞の百分率を測定した。サンプルが細胞生存率80%より大きい場合、細胞の再活性化および調製のために処理を継続した。
細胞および上澄み液は異なる時点で採取された。採取点は以下の通りであった:0(起点)、室温(RT)で2時間、4℃で48時間、および4℃で48時間保存後室温で2時間。
50ulの細胞懸濁液は上記150ulから3つのエッペンドルフチューブに移され、それぞれ染色なし、CD40L、および7ーADDと表記された。染色なしのチューブは、氷上で20分間培養された。CD40Lチューブは、製造者の指示に従って氷上で20分間FcR結合阻害剤とともにプレインキュベートされた。次に、染色緩衝液40ul(PBS+1%FBS)とPEーCD40L抗体10ulが、細胞懸濁液に添加されて、さらに20分間暗闇の氷上で培養された。
上澄み液中で分泌されたIFNーγは、製造者の指示に従って、IFNーγサンドイッチELISA法キット(R&D Systems, Mpls. MN)によって測定された。
この実験は、製剤緩衝液内細胞(CFB)が、搬送後に低温で安定するかどうかを測定するために実施された。いくつかのバッチの細胞懸濁液をFFBで調製し、メールサービス(フェデラルエックスプレス)で搬送した。温度は、データロガーによってモニターされた。事前に調整されていないボックスおよび事前に調整されたエアロゲル絶縁ボックス内の温度変化がモニターされた。外部温度もまたモニターされた。3つの異なるバッチが調製および搬送された。上澄み液のサンプルは、培養で活性化された細胞(CAC)、調製直後のCFB、室温(RT)で2時間経過後のCFB、4℃で48時間経過後のCFB、4℃で48時間経過し室温で2時間経過後のCFB、から採取された。CACは、CD40Lの発現の検査を受け、残りの細胞は、CD40Lの発現と細胞の生存率の検査を受けた。
本研究は、低温によってCFBの使用期限を延長可能かどうか測定するために実施された。室温でCFBを有する様々な製剤の安定性を試験した。CFBは、上述の通り、皮内(ID)投与、脊椎内(IT)投与、または静脈内(IV)投与用に調製された。低温安定が延長され得るかどうかを確認するために、これら製剤の安定性を試験した。
本実験は、CAC細胞とCFB細胞の安定性を比較するために実施された。3つの異なる細胞バッチは、皮内(ID)注射器として調製された。各バッチで、CAC用に注射器一つ、CFB用に注射器一つを準備した。CACを、cRPMIを用いて解凍および洗浄した。細胞のカウント後、細胞ペレットを、FFBを有する1mlあたり109個の細胞で再懸濁し、細胞懸濁液の1mlを3ml注射器に移した。CFBに関しては、細胞ペレットを、cRPMIを用いて1mlあたり109個の細胞内にて再懸濁し、抗CD3/抗CD28ビーズと混ぜた。細胞とビーズの混合物を、5%のCO2を用いて37℃で4時間培養した。細胞は、FFBで洗浄され、FFBを有する1mlあたり107個の細胞内にて再懸濁された。細胞懸濁液を3ml注射器に移した。各時点で、100ul(μl)のサンプルが、CD40L、IFN−γ、生存率の試験用に注射器から採取された。4℃で48時間培養後、いくつかのサンプルは、FFBを取り除くために400gで5分間遠心分離された。上澄み液を捨てた後で、細胞ペレットを、100ulのcRPMI培地で再懸濁し、37℃で2時間5%のCO2で培養した。上澄み液は、IFN−γの検出用に採取された。下の表2は、採取されたサンプルおよび実施された試験を列記する。
本研究は、イスラエルのエルサレムの生産施設からポイントオブケアへの梱包および搬送後の調製されたCFBの安定性を測定するために実施された。調整過程が終わると、細胞は、その生存率、固有性および機能特性を失い得る非栄養性の注入緩衝液に移されるので、CFB製品が、搬送中に72時間経過後、予め決められた固有性および機能特性を継続して満たすことを確認することは極めて重要であった。低温によって遺伝子発現および細胞の活動が減速し得り、かつ、この遺伝子発現は細胞を生理的温度に戻すことで回復し得ることが、知られている。このため、搬送は、事前認証済みで、冷蔵された、温度調整された容器を用いて行われる。
1.生存率試験:CFB生存率は、全ての試験時点で、生細胞の70%より大きくなければならない。
4.表面染色:CD40L AM (CFB−CAC)≧30。
6.ELISA法で試験されるIFNg分泌
6.1 4時間の活性化中に蓄積するIFNg>1000pgIFNg/1×106
6.2 ベースライン後24時間で蓄積するIFNg>6,000pg/1×106個細胞
6.3 2℃から8℃で72時間経過後、24時間で蓄積するIFNg>6,000pg/1×106個細胞
結果:
3つの別々の最終調整過程が、バッチHTC300の製剤に実施された。注射器に梱包された調製製品は、フライングカーゴ(FC)にてニューヨークに搬送され、イスラエルのエルサレムへ戻った。搬送中の注射器は、搬送パッケージ内の温度ロガーが示す通り、調製終了時から最大72時間まで2℃から8℃に保たれた。結果はすべて表3にまとめられている。
本発明は、好ましい実施の形態に関して記載されているが、本発明の精神と範囲を逸脱することなく当業者は形式上のおよび詳細において変更がされ得ることは認識されるであろう。
Claims (4)
- 柔軟性のある容器あるいは注射器であって、
前記容器あるいは注射器は、非栄養性緩衝液において調製された生細胞であって、該生細胞は、冷凍保存され、解凍され、及び固定化された抗CD3モノクローナル抗体及び抗CD28モノクローナル抗体によって再活性化されたCD4+細胞である生細胞を含み、前記生細胞は、非栄養性緩衝液において24時間より長い時間20℃より低い温度で保存された後に、所定の固有特性を維持すると共に、非栄養性緩衝液における調製前の生細胞を規定した少なくとも1つの機能特性を維持し、前記生細胞は、非栄養性緩衝液において保存後、免疫療法に有用であり、前記生細胞は、冷蔵温度に前記生細胞を維持する温度制御されたデバイス中で梱包され、前記生細胞は、調製時のCD40Lの発現に対して少なくとも80%の量で保存後にCD40Lを発現する、容器あるいは注射器。 - 温度制御された前記デバイスにおける前記冷蔵温度の温度範囲が0℃〜10℃である、請求項1に記載の柔軟性のある容器あるいは注射器。
- 前記非栄養性緩衝液における前記生細胞が少なくとも72時間安定である、請求項1又は2に記載の柔軟性のある容器あるいは注射器。
- 前記非栄養性緩衝液における生細胞の濃度が1ml当り106細胞またはそれ以上である、請求項1〜3のいずれか1項に記載の柔軟性のある容器あるいは注射器。
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Cited By (3)
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WO2022124307A1 (ja) | 2020-12-10 | 2022-06-16 | Agc株式会社 | オキシアルキレン重合体、その製造方法、硬化性組成物、硬化物 |
WO2022191084A1 (ja) | 2021-03-12 | 2022-09-15 | Agc株式会社 | 硬化性組成物及び硬化物 |
WO2023282298A1 (ja) | 2021-07-07 | 2023-01-12 | Agc株式会社 | 硬化性組成物、硬化物、接着剤、及びシーリング材 |
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