JPWO2020043903A5 - - Google Patents

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JPWO2020043903A5
JPWO2020043903A5 JP2021512207A JP2021512207A JPWO2020043903A5 JP WO2020043903 A5 JPWO2020043903 A5 JP WO2020043903A5 JP 2021512207 A JP2021512207 A JP 2021512207A JP 2021512207 A JP2021512207 A JP 2021512207A JP WO2020043903 A5 JPWO2020043903 A5 JP WO2020043903A5
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car
cells
expressing cells
target antigen
antigen
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JP7429222B2 (en
JP2021536246A (en
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Priority claimed from PCT/EP2019/073262 external-priority patent/WO2020043903A1/en
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キメラ抗原受容体(CAR)発現細胞の機能を評価するためのインビトロ方法であって:
(i)同じ細胞株から調製された標的抗原発現細胞及びCAR発現細胞を異なる標識で標識すること;
(ii)標識された標的細胞と標識されたCAR発現細胞を共培養すること、及び、
(iii)前記標的抗原発現細胞からの前記CAR発現細胞による膜獲得を評価するために細胞を分析することであって、前記膜獲得が、標的抗原への前記CAR発現細胞の結合及び/又は活性化能力の指標であり、それにより前記CAR発現細胞の機能を評価することを含み;且つ
前記細胞が免疫細胞である、方法。
An in vitro method for assessing the function of chimeric antigen receptor (CAR)-expressing cells comprising:
(i) labeling target antigen-expressing cells and CAR-expressing cells prepared from the same cell line with different labels;
(ii) co-culturing the labeled target cells and the labeled CAR-expressing cells, and
(iii) analyzing cells to assess membrane acquisition by said CAR-expressing cells from said target antigen-expressing cells, wherein said membrane acquisition comprises binding and/or activity of said CAR-expressing cells to target antigen; and wherein said cells are immune cells.
前記共培養が、少なくとも1時間の間行われる、請求項1に記載の方法。 2. The method of claim 1, wherein said co-cultivation is performed for at least 1 hour . 前記共培養が、1~5時間の間行われる、請求項1に記載の方法。The method of claim 1, wherein said co-cultivation is performed for 1-5 hours. 前記共培養が、1~3時間の間行われる、請求項1に記載の方法。The method of claim 1, wherein said co-cultivation is performed for 1-3 hours. 前記共培養が、1:0.5~1:10の標的抗原発現細胞対CAR発現細胞の比率で行われる、請求項1~4のいずれか一項に記載の方法。 A method according to any one of claims 1 to 4, wherein said co-culturing is performed at a ratio of target antigen-expressing cells to CAR-expressing cells of 1:0.5 to 1:10. 前記細胞分析が、細胞選別分析によって行われる、請求項1~のいずれか一項に記載の方法。 A method according to any one of claims 1 to 5 , wherein said cell analysis is performed by cell sorting analysis . 前記細胞選別分析が、フローサイトメトリー分析である、請求項6に記載の方法。7. The method of claim 6, wherein said cell sorting analysis is flow cytometry analysis. 前記標識された標的抗原細胞と前記標識されたCAR発現細胞を共培養する前に、前記CARが由来する抗体と比較して同じ又は重複するエピトープを認識する抗体と共に前記標的抗原発現細胞を培養する工程をさらに含む、請求項1~のいずれか一項に記載の方法。 Prior to co-culturing the labeled target antigen cells and the labeled CAR-expressing cells, the target antigen-expressing cells are cultured with an antibody that recognizes the same or overlapping epitope as compared to the antibody from which the CAR is derived. A method according to any one of claims 1 to 7 , further comprising steps. 前記抗体が、モノクローナル抗体である、請求項1~のいずれか一項に記載の方法。 The method of any one of claims 1-8 , wherein said antibody is a monoclonal antibody. 前記モノクローナル抗体が、前記CARが由来するモノクローナル抗体のCDRを含むモノクローナル抗体である、請求項9に記載の方法。10. The method of claim 9, wherein said monoclonal antibody is a monoclonal antibody comprising the CDRs of the monoclonal antibody from which said CAR was derived. 前記標的抗原を発現しない対照細胞を試験することをさらに含む、請求項1~10のいずれか一項に記載の方法。 The method of any one of claims 1-10 , further comprising testing control cells that do not express the target antigen. 前記標的抗原を認識しない対照CAR発現細胞を試験することをさらに含む、請求項1~11のいずれか一項に記載の方法。 The method of any one of claims 1-11 , further comprising testing control CAR-expressing cells that do not recognize said target antigen. 機能的なCAR発現細胞及び/又はCARコンストラクトの選択をさらに含む、請求項1~12のいずれか一項に記載の方法。 A method according to any one of claims 1 to 12 , further comprising selecting functional CAR-expressing cells and/or CAR constructs. 前記標識が、膜マーカーである、請求項1~13のいずれか一項に記載の方法。 A method according to any one of claims 1 to 13 , wherein said label is a membrane marker. 前記膜マーカーが、親油性トレーサー又は色素であり、さらにより好ましくは、MINI26、PKH26-PCL、PKH67、MINI67、PKH67-PCL、PKH26、PKH26-PCL、Vybrant CM-DiI、DiI、及びDiOからなる群から選択される、請求項14に記載の方法。Said membrane marker is a lipophilic tracer or dye, even more preferably the group consisting of MINI26, PKH26-PCL, PKH67, MINI67, PKH67-PCL, PKH26, PKH26-PCL, Vybrant CM-DiI, DiI and DiO 15. The method of claim 14, selected from: 前記免疫細胞が、Tリンパ球、Bリンパ球、ナチュラルキラー細胞、ナチュラルキラーT細胞、単球、及び抗原提示細胞からなる群から選択される、請求項1~15のいずれか一項に記載の方法。 16. The immune cell of any one of claims 1-15 , wherein said immune cells are selected from the group consisting of T lymphocytes, B lymphocytes, natural killer cells, natural killer T cells, monocytes, and antigen presenting cells. Method. 養子細胞療法のために機能的CAR発現細胞を選択するためのインビトロ方法であって:
(i)免疫細胞の集団にCARをコードする核酸配列を形質導入すること、
(ii)CARを発現する前記単離された細胞の亜集団を選択すること、及び、
(iii)請求項1~11のいずれか一項に記載の方法によってそれらの機能を評価すること、
(iv)任意選択により、前記抗原発現細胞からの膜獲得を経験したCAR発現細胞から機能的CAR発現細胞及び/又はCAR核酸コンストラクトを選択することを含む、方法。
An in vitro method for selecting functional CAR-expressing cells for adoptive cell therapy comprising:
(i) transducing a population of immune cells with a nucleic acid sequence encoding a CAR;
(ii) selecting a subpopulation of said isolated cells that express CAR; and
(iii ) assessing their function by a method according to any one of claims 1-11;
(iv) optionally, selecting functional CAR-expressing cells and/or CAR nucleic acid constructs from CAR-expressing cells that have undergone membrane acquisition from said antigen-expressing cells.
前記免疫細胞の集団が、処置される対象からの生物学的サンプルから単離された免疫細胞の集団である、請求項17に記載の方法。18. The method of claim 17, wherein said population of immune cells is a population of immune cells isolated from a biological sample from the subject to be treated. 前記標的抗原発現細胞が、CARが作製された抗原を発現する、請求項17に記載の方法。18. The method of claim 17, wherein said target antigen-expressing cells express the antigen for which the CAR was generated. 前記抗原が、HLA-Gである、請求項1~19のいずれか一項に記載の方法。 A method according to any one of claims 1 to 19 , wherein said antigen is HLA- G . 前記HLA-Gが、HLA-G1である、請求項20に記載の方法。21. The method of claim 20, wherein said HLA-G is HLA-G1.
JP2021512207A 2018-08-31 2019-08-30 How to evaluate the functionality of CAR Active JP7429222B2 (en)

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EP18306152 2018-08-31
EP18306152.2 2018-08-31
PCT/EP2019/073262 WO2020043903A1 (en) 2018-08-31 2019-08-30 Method to assess car functionality

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CN113789349A (en) * 2021-09-30 2021-12-14 深圳市北科生物科技有限公司 Method for rapidly screening chimeric antigen receptor by using alpaca phage natural library and human T cell strain

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