JP7213976B2 - 単核細胞由来のnk細胞 - Google Patents
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Description
Claims (37)
- NK細胞を富化する方法であって、
全血又は臍帯血から、単核細胞の混合物を単離する工程と、前記単核細胞の混合物を、容器中で抗CD16抗体、抗CD3抗体、及びN-803と接触させて、NK細胞を活性化する工程と;
活性化されたNK細胞が全生細胞の少なくとも90%を占めるまで又は前記活性化されたNK細胞が、少なくとも80倍の増殖に富化されるまで、前記活性化されたNK細胞に、同一の容器中で、N-803を含む培地を連続して供給する工程と
を含む方法。 - 前記単核細胞の混合物を単離する工程が、密度勾配遠心分離を用いて行われる、請求項1に記載の方法。
- 前記単核細胞の混合物が、T細胞、NK細胞、NKT細胞、及びDN T細胞を含む、請求項1又は2に記載の方法。
- 前記単核細胞の混合物が、NK細胞を富化するためにさらに処理されない、請求項1~3のいずれか一項に記載の方法。
- 前記抗CD16抗体が、ヒトCD16に対する特異性を有するモノクローナル抗体である、請求項1~4のいずれか一項に記載の方法。
- 前記単核細胞の混合物が、約100~500×106個の細胞を含有する、請求項1~5のいずれか一項に記載の方法。
- 前記混合物を接触させる工程が、約100~300mlの体積で又は約1×106個の細胞/mlの細胞密度で行われる、請求項1~6のいずれか一項に記載の方法。
- 前記抗CD16抗体が、0.05~0.5mcg/mlの濃度で存在する、請求項1~7のいずれか一項に記載の方法。
- 前記N-803が、0.1~1.0nMの濃度で存在する、請求項1~8のいずれか一項に記載の方法。
- 前記抗CD3抗体が、0.1~1.0ng/mlの濃度で存在する、請求項1に記載の方法。
- N-803を含む前記培地が、ヒトAB血清を含む、請求項1~10のいずれか一項に記載の方法。
- N-803を含む前記培地が、NK MACS培地を含む、請求項1~11のいずれか一項に記載の方法。
- 前記連続して供給する工程が、約72時間置きに行われる、請求項1~12のいずれか一項に記載の方法。
- 前記連続して供給する工程が、約0.5~5.0×109個の細胞の総細胞数に達するまで行われる、請求項1~13のいずれか一項に記載の方法。
- 前記活性化されたNK細胞に連続して供給する工程が、NK細胞が少なくとも100倍の増殖に富化されるまで行われる、請求項1~14のいずれか一項に記載の方法。
- 単核細胞の混合物からNK細胞を増殖する方法であって、
5%以下のNK細胞を含有する前記単核細胞の混合物を提供する工程と;
容器中で、前記単核細胞の混合物を、抗CD16抗体、抗CD3抗体、及びN-803と接触させて、NK細胞を活性化する工程と;
前記活性化されたNK細胞が全生細胞の少なくとも90%を占めるまで又は前記活性化されたNK細胞が少なくとも80倍の増殖に富化されるまで、前記活性化されたNK細胞に、当該容器中で、N-803を含む培地を供給する工程と
を含む方法。 - 前記単核細胞の混合物が、前記NK細胞を与えられる個体に対して、MHC適合した同種異系起源から得られる、請求項16に記載の方法。
- 前記単核細胞の混合物が、3%以下のNK細胞を含有する、請求項16又は17に記載の方法。
- 前記単核細胞の混合物が、T細胞、NKT細胞、及びDN細胞をさらに含む、請求項16~18のいずれか一項に記載の方法。
- 前記抗CD16抗体が、ヒトCD16に対する特異性を有するモノクローナル抗体である、請求項16~19のいずれか一項に記載の方法。
- 前記抗CD16抗体が、0.05~0.5mcg/mlの濃度で存在する、請求項16~20のいずれか一項に記載の方法。
- 前記N-803が、0.1~1.0nMの濃度で存在する、請求項16~21のいずれか一項に記載の方法。
- 前記抗CD3抗体が、0.1~1.0ng/mlの濃度で存在する、請求項16~22のいずれか一項に記載の方法。
- N-803を含む前記培地が、ヒトAB血清を含む、請求項16~23のいずれか一項に記載の方法。
- 前記供給する工程が、約72時間置きの間隔で連続して供給することを含む、請求項16~24のいずれか一項に記載の方法。
- 前記供給する工程が、約0.5~5.0×109個の細胞の総細胞数に達するまで行われる、請求項16~25のいずれか一項に記載の方法。
- 前記活性化されたNK細胞に供給する工程が、NK細胞が少なくとも100倍の増殖に富化されるまで行われる、請求項16~26のいずれか一項に記載の方法。
- 前記活性化されたNK細胞に供給する工程が、自動化された方法で行われる、請求項16~27のいずれか一項に記載の方法。
- 自動化されたバイオリアクター中でNK細胞を増殖する方法であって、
NK細胞を活性化するのに十分な時間にわたって、N-803及び、抗CD3抗体、抗CD16抗体を含む活性化培地中で、単核細胞の混合物をインキュベートする工程であって;
前記単核細胞の混合物が、前記混合物をインキュベートしながら細胞培養容器に含まれる、工程と;
前記細胞が前記容器に入っている状態で、前記細胞の増殖を測定する工程と;
活性化されたNK細胞が全生細胞の少なくとも90%を占めるまで又は前記活性化されたNK細胞が、少なくとも80倍の増殖に富化されるまで、同一の容器中で、N-803を含む培地を用いて、前記細胞に自動的に供給する工程であって、前記供給が、所定のスケジュール及び/又は前記細胞の増殖を測定する前記工程からの結果によって制御される、工程と;
前記細胞への供給を停止する工程であって、前記停止が、所定のスケジュール及び/又は前記細胞の増殖を測定する前記工程からの結果によって制御される、工程と
を含む方法。 - 前記容器が、約200ml~約2,500mlの体積を有する、請求項29に記載の方法。
- 前記細胞の増殖を測定する工程が、前記容器の壁を通して行われる、請求項29又は30に記載の方法。
- 前記細胞の増殖を測定する工程が、光学的測定を使用する、請求項29~31のいずれか一項に記載の方法。
- 前記活性化培地が、0.1~1.0nMの濃度のN-803及び0.05~0.5mcg/mlの濃度の前記抗CD16抗体を含む、請求項29~31のいずれか一項に記載の方法。
- NK細胞を活性化するのに十分な前記時間が、24時間~96時間である、請求項29~33のいずれか一項に記載の方法。
- N-803を含む前記培地が、0.1~1.0nMの濃度のN-803を含む、請求項29~34のいずれか一項に記載の方法。
- 前記細胞が、約0.5~5.0×109個の細胞の総細胞数に達するまで供給される、請求項29~35のいずれか一項に記載の方法。
- 前記細胞が、NK細胞が少なくとも100倍の増殖に富化されるまで供給される、請求項29~36のいずれか一項に記載の方法。
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