JP2014520546A - 胎児の組織からの親細胞バンクの調製 - Google Patents
胎児の組織からの親細胞バンクの調製 Download PDFInfo
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- JP2014520546A JP2014520546A JP2014519671A JP2014519671A JP2014520546A JP 2014520546 A JP2014520546 A JP 2014520546A JP 2014519671 A JP2014519671 A JP 2014519671A JP 2014519671 A JP2014519671 A JP 2014519671A JP 2014520546 A JP2014520546 A JP 2014520546A
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Abstract
【選択図】なし
Description
a)胎児の骨端軟骨細胞を含む尺骨の胎児の軟骨;胎児のアキレス腱細胞を含む胎児のアキレス腱;または胎児の皮膚線維芽細胞を含む胎児の腹部の皮膚;から選択される、胎児のサンプルを使用する工程、
b)前記尺骨の胎児の軟骨、胎児のアキレス腱または胎児の腹部の皮膚のサンプルを外科用メスの切断面に機械的に接着させることにより、微小に切断し分散させる工程、
c)前記尺骨の胎児の軟骨、胎児のアキレス腱または胎児の腹部の皮膚のサンプルを、前記胎児の骨端軟骨細胞、胎児のアキレス腱細胞または胎児の腹部の皮膚の線維芽細胞を増殖する条件下で、インビトロで培養する工程、
d)第一の接着性の胎児の骨端軟骨細胞の細胞集団、第一の接着性の胎児のアキレス腱の細胞集団、および第一の接着性の胎児の皮膚線維芽細胞集団を前記培養から選択し、単離する工程。
a)胎児の骨端軟骨細胞を含む尺骨の胎児の軟骨;胎児のアキレス腱細胞を含む胎児のアキレス腱;または胎児の皮膚線維芽細胞を含む胎児の腹部の皮膚;から選択される、胎児のサンプルを使用する工程、
b)前記尺骨の胎児の軟骨、胎児のアキレス腱または胎児の腹部の皮膚のサンプルを外科用メスの切断面に機械的に接着させることにより、微小に切断し分散させる工程、
c)前記尺骨の胎児の軟骨、胎児のアキレス腱または胎児の腹部の皮膚のサンプルを、前記胎児の骨端軟骨細胞、胎児のアキレス腱細胞または胎児の腹部の皮膚の線維芽細胞を増殖する条件下で、インビトロで培養する工程、
d)第一の接着性の胎児の骨端軟骨細胞の細胞集団、第一の接着性の胎児のアキレス腱の細胞集団、および第一の接着性の胎児の皮膚線維芽細胞集団を前記培養から選択し、単離する工程。
新しい腱または皮膚組織を製造し、腱または皮膚を修復または置換するための細胞を製造するために使用されうる胎児の腱前駆細胞および胎児の皮膚前駆細胞に等価に利用され得る。
(細胞バンク)
細胞バンクは、情報に基づき書面で同意し、そして1993年から、現地の医大倫理委員会(Medical School Ethics Committee)から、より具体的には2007年からの臨床細胞バンクのための承認を得た妊娠中絶後の12〜14 週の妊娠の胎児の生検から、University Hospital of Lausanne(ローザンヌ大学病院)で構築されている。臨床前関節軟骨の細胞バンクは、これまで2人の異なるドナーから成功裏に開発されている。これら(FE002−Cart(p.0)、FE−002−Ten(p.0)、FE−002−SK2(p.0))の1つを使用し、少ない継代での臨床前および臨床試験のために必要なすべての細胞を構築することが可能であるだろう(MCB(p.3)およびWCB(p.5))。
組織を2つの10cmプレートに分け、1つのプレートにつき、約5の全組織フラグメント(<0.5mm3)にする。組織培養皿を、前もって、ラミナーフローフードの下、チェックボードのパターンにおいて滅菌メスを用いて深くスコア付した。組織フラグメントを、静かに細かく切り、プラスチックインデント内にフラグメントを付着させてスコア付されたプラスチック領域に配置した。少量の栄養分を含む培地を、各フラグメントの周囲に配置し、最初の24時間、組織の流動を回避した。最初の24時間の後、8mLの培地を、各10cmのプレートに添加し、これを継代の前に週2回変更した。これらのフラグメントを10%ウシ胎児血清(Hyclone)だけで補添したDMEM中で増殖させ、一貫した細胞培養を確実にするのを補助した。細胞培養物を95%空気/10%CO2の加湿された雰囲気において37℃で成長させた。臨床試験用の細胞培養に必要な任意の栄養成分は、徹底した安全の必要性および追跡を有するべきであるということを言及するのは重要である。すべての動物由来の製品(ウシ胎児血清およびトリプシン、外来性物質のために試験されたトリプシンおよびガンマ線照射血清の臨床ロット)が用いられるべきである。細胞増殖は最初、1日後でさえ見られたが、5〜7日の間に細胞増殖が上昇した後、組織および細胞の培養皿をトリプシン処理(0.25%のトリプシン−0.1%のエチレンジアミン四酢酸[EDTA])することにより、またはEDTAのみを用いることによりプレートから除去して、複数の組織培養フラスコに継代するまたは細胞バンクのために冷凍した。この時点で、いくつかの胎児の軟骨、胎児の腱または胎児の皮膚細胞は、液体窒素中個々の単位に冷凍され、一方でPCBの製造のため1,000〜2,000細胞/cm2または10,000〜50,000細胞/cm2で継代した。2000gで細胞を15分間遠心分離し、DMEM(5ml)+FCS(4ml)+DMSO(1ml、Fluka製)の冷凍溶液に再懸濁させ、1mlの一定分量(約500万〜1000万の細胞)を、Nalgene Cryoの1℃冷凍容器(Nalgene製Nalgene Cryo 1℃ Freezing Container)中、−80℃で凍結させ、−1℃/分の冷却速度と冷却曲線を達成した。24時間後、細胞をより長期の貯蔵のため液体窒素に移動した。
バンクされた胎児の軟骨細胞は、出願人らの研究の全体にわたって、出願人らの研究室の同じ技術条件下でバンクされたBM−MSC細胞と比較されている。MSCの細胞は、他の組織の中で軟骨再生のための前臨床および臨床実験において提案されかつ使用されている同種異系細胞および主な他の細胞型の1つである(しかしながら、間葉系細胞は組織特異的でなく、他の組織の種類を作製するように調製されなければならない)。さらに、MSCの細胞は、より不安定であり、継代4の下で用いられなければならない。同じ方法は胎児の腱前駆細胞および胎児の皮膚前駆細胞に等しく利用され得る。
胎児の関節軟骨の細胞バンクは、BM−MSC細胞と比較されるマトリクスの供託用の機能アッセイのFACS分析を用いて行われた表面マーカーにより特性評価されている。関節骨端組織から得られる胎児の軟骨細胞を単離し、親細胞バンクを冷凍している。
CD105:Endoglin.TGFベータ受容体コンプレックスの部分.MSCの陽性の選択のための主な基準.
CD90:Thy−1.MSCの陽性の選択のための主な基準.
CD44:PTPRC.白血球マーカー.BmMSCsの陰性の選択のための基準.
CD73:NT5E.MSCの陽性の選択のための主な基準.
CD166:ALCAM.
同じ方法が、胎児の腱前駆細胞および胎児の皮膚前駆細胞に等しくに用い得られうる。
医学的使用に用い得る異なるマトリクスを初めに生体適合性について試験した。種々の組成物のヒドロゲル、コラーゲンおよびいくつかの生分解性ポリマーを最初の実験に用いる。ヒドロゲルに関して、細胞を、前もって調製した寒天モールドに挿入されたゲル内で培養する。これは、チューブへの細胞の接着を回避し、3次元成長を可能とする必要があるためである。当該モールドを、0.5mlの無菌コニカルエッペンドルフ遠心分離チューブが液体の寒天に挿入されている、1.5mlの無菌コニカルエッペンドルフ遠心分離チューブ内に1mlの融解したアガロース(20%寒天、低温融解した寒天)をピペット操作により調製し、凝固でき、その後、コニカルをはめこんだままで0.5mlのチューブを取り出す。ゲルおよび細胞添加に続き、100μlの培地を各チューブの表面にピペットし、培地を週に2回変更した。細胞を95%相対湿度および10%C02で、37℃の培養器中、1、2、4週間成長させる。
Claims (18)
- 胎児の骨端軟骨細胞、胎児のアキレス腱細胞または胎児の皮膚線維芽細胞からなる群から選択される胎児細胞の単離、増殖および発生のためのインビトロの非酵素方法であって、以下の段階を含む:
a)胎児の骨端軟骨細胞を含む尺骨の胎児の軟骨;胎児のアキレス腱細胞を含む胎児のアキレス腱;または胎児の皮膚線維芽細胞を含む胎児の腹部の皮膚;から選択される、胎児のサンプルを使用する工程、
b)前記尺骨の胎児の軟骨、胎児のアキレス腱または胎児の腹部の皮膚のサンプルを外科用メスの切断面に機械的に接着させることにより、微小に切断し分散させる工程、
c)前記尺骨の胎児の軟骨、胎児のアキレス腱または胎児の腹部の皮膚のサンプルを、前記胎児の骨端軟骨細胞、胎児のアキレス腱細胞または胎児の腹部の皮膚の線維芽細胞を増殖する条件下で、インビトロで培養する工程、
d)第一の接着性の胎児の骨端軟骨細胞の細胞集団、第一の接着性の胎児のアキレス腱の細胞集団、および第一の接着性の胎児の皮膚線維芽細胞集団を前記培養から選択し、単離する工程。 - 尺骨の胎児の軟骨サンプルが胎児の近位尺骨の骨端のサンプルである、請求項1に記載の非酵素方法。
- 指定番号FE002−Cartを有し、受入番号ECACC12070303−FE002−Cartで供託されている、請求項1に記載の非酵素方法により得られる胎児の骨端軟骨細胞(FEC)細胞株。
- 指定番号FE002−Tenを有し、受入番号ECACC12070302−FE002−Tenで供託されている、請求項1の非酵素方法により得られる胎児のアキレス腱細胞細胞株。
- 指定番号FE002−SK2を有し、受入番号ECACC12070301−SK2で供託されている、請求項1の非酵素方法により得られる胎児の皮膚線維芽細胞株。
- 新しい軟骨組織および/または3次元構造物を製造するための請求項3に記載の胎児の骨端軟骨細胞(FEC)の使用方法。
- 新しい腱組織および/または3次元構造物を製造するための請求項4に記載の胎児のアキレス腱細胞の使用方法。
- 新しい皮膚組織および/または3次元構造物を製造するための請求項5に記載の胎児の皮膚線維芽細胞の使用方法。
- 治療薬として使用する請求項3に記載の胎児の骨端軟骨細胞(FEC)。
- 治療薬として使用する請求項4に記載の胎児のアキレス腱細胞。
- 治療薬として使用する請求項5に記載の胎児の皮膚線維芽細胞。
- 骨軟骨組織および筋骨格組織の修復および再生方法において使用する、請求項3に記載の胎児の骨端軟骨細胞(FEC)。
- 腱組織および筋骨格組織の修復用および再生用の方法において使用する、請求項4に記載の胎児のアキレス腱細胞。
- 皮膚組織の修復および再生方法ならびに熱傷、創傷および線維症状態の処置のために使用する、請求項5に記載の胎児の皮膚線維芽細胞。
- 骨軟骨疾患または欠損、関節炎および筋骨格疾患の処置方法において使用する、請求項3に記載の胎児の骨端軟骨細胞(FEC)。
- 筋骨格疾患および腱障害の処置方法において使用する、請求項4に記載の胎児のアキレス腱細胞。
- 皮膚疾患の処置方法において使用するための、請求項5に記載の胎児の皮膚線維芽細胞。
- 請求項3の胎児の骨端軟骨細胞(FEC)、請求項4の胎児のアキレス腱細胞、または請求項5の胎児の皮膚線維芽細胞の使用を含む、関節炎、骨軟骨欠損、軟骨修復、腱修復、筋骨格組織修復および皮膚修復の処置のための治療薬および/または医療装置の開発のためのスクリーニング方法。
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JPN6016004576; ROSHE, S. et al.: 'Native and DPPA cross-linked collagen sponges seeded with fetal bovine epiphyseal chondrocytes used' Biomaterials Vol.22 No.1, 2001, pages 9-18 * |
JPN6016004577; BAE, H. et al.: '183. Human Fetal Chondrocyte Transplants for Damaged Intervertebral Disc.' The SPINE Journal Vol.8 No.5, 2008, pages 92S-93S * |
JPN6016004578; REGINATO, A.M.: 'Formation of nodular structures resembling mature articular cartilage in long-term primary cultures' Arthritis Rheum. Vol.37 no.9, 1994, pages 1338-1349 * |
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