WO2023157977A1 - ウイルスベクター生産性増強剤及びウイルスベクターの製造方法 - Google Patents
ウイルスベクター生産性増強剤及びウイルスベクターの製造方法 Download PDFInfo
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Definitions
- the present invention relates to a viral vector productivity enhancer capable of improving viral productivity and a viral vector manufacturing method that can be used in a viral vector manufacturing process using cultured cells.
- Gene therapy using a viral vector is a therapeutic method in which a viral vector containing a gene encoding a therapeutically effective protein is administered to a patient, or cells into which the viral vector is introduced are administered to the patient.
- Viral vectors used in gene therapy include retroviruses, lentiviruses, adenoviruses, adeno-associated viruses, Sendai virus, herpes virus and the like.
- gene therapy has already been put to practical use, but in order for gene therapy to be widely put into practical use for various diseases, it is urgently necessary to establish a technology that can efficiently produce high-quality viral vectors in large quantities.
- Viral vector production usually involves first culturing and growing vector-producing cells and then infecting them with a small amount of virus. Thereafter, cell culture is continued to expand the virus infection, and the virus vector is propagated in the virus-infected cells. In addition, the viral vector propagated in cells is collected and purified according to standard methods, and formulated as necessary.
- Patent Literature 1 discloses an enhancer that enhances the efficiency (transfection efficiency) of introducing a recombinant adeno-associated virus into cells in the above-described viral vector production process.
- the potentiators disclosed in US Pat. No. 5,400,002 are valproic acid, salts or derivatives thereof; isobutyric acid, salts or derivatives thereof; or isovaleric acid, salts or derivatives thereof.
- Patent Document 2 discloses an invention relating to a cell line used in the process of producing an adeno-associated virus vector, wherein YB1 (Y-box binding protein 1 (also known as Y-box transcription factor and nuclease-sensitive sequence binding protein 1 (nuclease sensitive element binding protein 1))), NPM1 (also known as the gene encoding nucleophosmin, nucleolar phosphorylation protein B23, and numatrin), and NCL (encoding the nucleolar phosphorylation protein nucleolin) A cell line with reduced expression of at least one of the genes) is disclosed. Viral vector productivity is improved by using the cell line disclosed in Patent Document 2.
- YB1 Y-box binding protein 1 (also known as Y-box transcription factor and nuclease-sensitive sequence binding protein 1 (nuclease sensitive element binding protein 1))
- NPM1 also known as the gene encoding nucleophosmin, nucleolar phosphorylation protein B23, and numatrin
- Patent Document 3 discloses an invention relating to a cell line used in the process of producing an adeno-associated virus vector, which is a cell line into which a specific miRNA has been introduced.
- a cell line disclosed in Patent Document 3 an adeno-associated virus vector with a higher titer than conventionally can be produced without complicated operations.
- an object of the present invention is to provide a novel viral vector productivity enhancer capable of improving viral vector productivity, a method for producing a viral vector, and the like.
- the present invention includes the following.
- a viral vector productivity enhancer comprising a DNA replication inhibitor as a main ingredient.
- the viral vector productivity enhancer according to (1) which is used for viral vector production by viral vector-producing cells.
- a method for producing a viral vector comprising the steps of culturing viral vector-producing cells in which DNA replication has been inhibited, and recovering the viral vector from the cultured cells.
- the viral vector according to (4) wherein in the step of culturing the cell, the cell is cultured in a medium containing the viral vector productivity enhancer according to any one of (1) to (3). manufacturing method.
- This specification includes the disclosure of Japanese Patent Application No. 2022-025036, which is the basis of priority of this application.
- the present invention it is possible to provide a viral vector productivity-enhancing agent that acts on viral vector-producing cells and can significantly improve the viral vector productivity of the cells.
- a production method capable of significantly improving viral vector productivity in the production of viral vectors using viral vector-producing cells it is possible to provide a production method capable of significantly improving viral vector productivity in the production of viral vectors using viral vector-producing cells.
- FIG. 2 is a characteristic diagram showing the results of measuring the effect of carboplatin on enhancing rAAV vector production.
- FIG. 2 is a characteristic diagram showing the results of measuring the effect of carboplatin on enhancing rAAV vector production over time.
- Fig. 3 is an electrophoresis photograph showing the results of SDS-PAGE analysis of rAAV vector-constituting proteins when carboplatin was used.
- Fig. 3 is a photograph showing the results of an infectivity test of rAAV vectors produced using carboplatin.
- FIG. 2 is a characteristic diagram showing the results of measuring the effect of cisplatin on enhancing rAAV vector production.
- FIG. 2 is a characteristic diagram showing the results of measuring the rAAV vector production-enhancing effect of nedaplatin.
- the viral vector productivity enhancer and the method for producing a viral vector according to the present invention improve the viral vector productivity in cells that produce viral vectors.
- viral vector productivity is improved by inhibiting DNA replication in viral vector-producing cells.
- Viral vector productivity means that the amount of viral vector is higher than that of a control when the above cells are cultured under predetermined conditions, or that the virus titer is higher than that of controls when the above cells are cultured under predetermined conditions. means that Conventionally known methods can be appropriately applied to measure the amount of viral vector and measure the viral titer. Viral vector levels and viral titers can be measured by, but not limited to, plaque assay, TCID50 assay (tissue culture infectious dose), quantitative RT-PCR assay, and the like.
- viral vectors refer to viruses and genetically modified viruses that are artificially produced and amplified for research and medical purposes, and the type of virus is not particularly limited. Examples include adeno-associated virus (AAV), Adenovirus, enterovirus, parvovirus, papovavirus, human papillomavirus, rotavirus, coxsackievirus, sapovirus, norovirus, poliovirus, echovirus, hepatitis A virus, hepatitis E virus, rhinovirus, astrovirus, circovirus, simian virus
- Non-enveloped viruses such as retroviruses, retroviruses, lentiviruses, Sendai virus, herpes viruses such as herpes simplex virus, vaccinia virus, measles virus, baculovirus, influenza virus, leukemia virus and enveloped viruses such as Sindbis virus and pox virus be able to.
- viral vectors used for gene therapy such as adeno-associated virus, are preferred
- Adeno-associated virus is a virus belonging to the Parvoviridae family that contains linear single-stranded DNA in the capsid.
- Adeno-associated viruses include type 1 AAV virus (AAV1), type 2 AAV virus (AAV2), type 3 AAV virus (AAV3), type 4 AAV virus (AAV4), type 5 AAV virus (AAV5), type 6 AAV virus. (AAV6), type 7 AAV virus (AAV7), type 8 AAV virus (AAV8), type 9 AAV virus (AAV9) and type 10 AAV virus (AAV10).
- AAV virus vectors such as AAV-DJ and AAV-PHP.B. Furthermore, it can be applied to technology for packaging and amplifying artificial nucleic acids in adeno-associated virus capsids.
- cells that produce these viral vectors are synonymous with packaging cells that can produce these viral vectors.
- Cells to be transfected with a viral vector are not limited to HEK293 cells, HEK293T cells, HEK293S cells, HEK293F cells, HEK293FT cells, HEK293FTM cells, HEK293SG cells, HEK293SGGD cells, HEK293H cells, HEK293E cells and HEK293MSR derived from HEK293 cells. Cells can be mentioned.
- adenovirus eg, Adeno-X 293 Cell Line
- adeno-associated virus eg, AAVpro 293T Cell Line
- Other mammalian-derived packaging cells include human cervical cancer-derived HeLa cells, human lung cancer-derived A549 cells, human fibrosarcoma HT-1080 cells, human retinal pigment epithelium-derived cells such as PER. C6 cells, hamster-derived BHK cells and CHO cells, African green monkey-derived Vero cells and COS cells can be mentioned.
- Methods for producing viral vectors are not limited to transfection of plasmids into packaging cells, methods of infecting and amplifying helper viruses such as adenoviruses and herpesviruses into packaging cells, and methods of packaging viral vectors. Examples include a method of establishing and amplifying producer cells by incorporating constituent factors into the genome of cells.
- cells that produce viral vectors are not limited to mammalian-derived cells, and can also be used for methods of amplifying viral vectors using insect-derived cells. For example, using cells derived from lepidopteran insects typified by Sf9 and Sf21 cells derived from the ovary of the armyworm, Tni cells derived from the nettlewort, and High Five cells, an amplification method in which a viral vector is transfected, or and a method of infecting and amplifying a baculovirus loaded with a component for packaging a viral vector.
- the medium for culturing the above-described viral vector-producing cells is not particularly limited, and the medium can be appropriately selected according to the cells to be used.
- the medium can be appropriately selected according to the cells to be used.
- Dulbecco's modified Eagle's medium containing 10% fetal bovine serum (DMEM containing 10% FBS, DMEM containing 10% FCS) can be used, or serum-free Eagle's minimal essential medium (E-MEM) can be used. good.
- DMEM containing 10% FBS fetal bovine serum
- E-MEM serum-free Eagle's minimal essential medium
- adhesion culture or suspension culture may be used as a method for culturing the virus vector-producing cells.
- inhibiting DNA replication means, but is not particularly limited to, allowing a DNA replication inhibitor such as a platinum agent to act on the viral vector-producing cells.
- Platinum agents that can be used in the present invention include, but are not limited to, carboplatin, oxaliplatin, cisplatin and nedaplatin, and analogues of these compounds. Among them, it is preferable to use carboplatin having the following structural formula or an analogue thereof as the DNA replication inhibitor.
- the analogue of carboplatin is a compound having a structure in which a predetermined atom or atomic group in the above structural formula is replaced with another atom or atomic group, and covalently binds to DNA in the same manner as carboplatin.
- the concentration in the medium for culturing viral vector-producing cells is not particularly limited. preferably 10 to 50 ⁇ g/ml, even more preferably 20 to 40 ⁇ g/ml.
- cisplatin having the following structural formula or an analogue thereof.
- the cisplatin analogue is a compound having a structure in which a predetermined atom or atomic group in the above structural formula is replaced with another atom or atomic group, and covalently binds to DNA in the same manner as cisplatin. means a compound that inhibits DNA synthesis by
- the concentration in the medium for culturing viral vector-producing cells is not particularly limited. preferably 1 to 3 ⁇ g/ml.
- nedaplatin having the following structural formula or an analogue thereof.
- the analogue of nedaplatin is a compound having a structure in which a predetermined atom or atomic group in the above structural formula is replaced with another atom or atomic group, and covalently binds to DNA in the same manner as nedaplatin. means a compound that inhibits DNA synthesis by
- the concentration in the medium for culturing viral vector-producing cells is not particularly limited. preferably 2 to 7 ⁇ g/ml, even more preferably 2 to 5 ⁇ g/ml.
- rAAV1 type 1 AAV vector
- rAAV1 Recombinant adeno-associated virus 1
- pAAV-ZsGreen1 manufactured by Takara Bio
- pAAV2/1 pHelper
- pHelper pHelper
- PEI Polyethylenimine Max
- 90% or more confluent HEK293 cells were transfected with E-MEM containing 10% FBS for 6 hours, and then cultured in serum-free E-MEM.
- Genomic DNA of rAAV1 was extracted to measure the virus titer. Specifically, the culture supernatant was collected and treated with benzonase at 37° C. for 1 hour, after which viral genomic DNA was extracted and purified using a DNeasy Blood & Tissue kit (manufactured by QIAGEN). Viral titers were measured in triplicate by real-time PCR. PCR was performed by qPCR using primers targeting Zs-Green1.
- AAV vector-producing ability by treatment with chemical substances On the day after HEK293 cells were seeded in 24-well plates at 4 ⁇ 10 5 cells per well, AAV vector-producing plasmids were introduced. 1 was replaced with serum-free E-MEM to which each concentration of carboplatin, cisplatin or nedaplatin, which is a DNA replication inhibitor, was added, and the cells were cultured for 3 days. A group to which serum-free E-MEM was added to which no chemicals were added was used as a control, and virus titers were compared. In addition, carboplatin was followed for 4 to 7 days in the amount of AAV production over time.
- HEK293 cells Purity determination by SDS-PAGE HEK293 cells were cultured in two square dishes until they became 90% or more confluent. The HEK293 cells were transfected with an AAV vector construction plasmid. After 6 hours, the medium was replaced with serum-free E-MEM (20 ⁇ g/ml, 72 ml) supplemented with carboplatin and cultured for 5 days. The control was HEK293 cells untreated with chemical substances. Cells were harvested using a scraper on day 5 of culture. The cells were centrifuged at 2000 g for 10 minutes, and the AAV vector was extracted, purified and concentrated using the AAVpro Purification Kit (manufactured by TaKaRa Bio).
- the virus titer was measured by qPCR, and SDS-PAGE was performed at 6.1 ⁇ 10 9 vg/lane using a 5-20% polyacrylamide concentration gradient gel. After electrophoresis, the gel was stained with Oriole Fluorescent Gel Stain (Bio-RAD), and the major bands of AAV capsid proteins (VP1, VP2 and VP3) were photographed with a chemiluminescence imaging device and the ratio of each band (1:1:10). and purity were analyzed.
- Oriole Fluorescent Gel Stain Bio-RAD
- HEK293 cells were seeded on a 24-well plate so that each well had 4 ⁇ 10 5 cells, transfected with an AAV vector constructing plasmid, and then treated with chemical substances for 5 days. After that, the culture supernatant was collected. The control was HEK293 cells untreated with chemical substances. The virus titer was measured by qPCR, and transduced at 1 ⁇ 10 5 vg/cell to HEK293 cells seeded in a 96-well plate at 6.25 ⁇ 10 3 cells per well. Three days after transduction, green fluorescence was observed and photographed with an inverted research microscope.
- FIG. 1 shows the results of measuring the effect of carboplatin on enhancing rAAV vector production.
- the vertical axis indicates the amount of AAV vector produced (vg), and the horizontal axis indicates the concentration of the chemical substance.
- carboplatin has the effect of enhancing AAV vector production, and a particularly high AAV vector production enhancing effect was observed in the concentration range of 20 to 40 ⁇ g/ml.
- Fig. 2 shows the results of measuring the effect of carboplatin on enhancing rAAV vector production over time.
- the vertical axis indicates the amount of AAV vector production (v.g.), and the horizontal axis indicates the elapsed time (days) from the start of vector production.
- the amount of AAV vector produced increased over time from the start of vector production, and in particular, it was confirmed that the amount of AAV vector produced continued to increase even 7 days after the treatment.
- Fig. 3 shows the results of SDS-PAGE analysis of rAAV vector constituent proteins when carboplatin was used. As can be seen from FIG. 3, it was confirmed that the rAAV vectors produced by carboplatin treatment also contained rAAV constituent proteins (VP1, VP2, VP3) equivalent to those of untreated vectors.
- Figure 4 shows the results of an infectivity test of rAAV vectors produced using carboplatin. As shown in FIG. 4, it was confirmed that the rAAV vector prepared by treating with carboplatin maintained the same level of infectivity as the AAV vector prepared without carboplatin treatment.
- Fig. 5 shows the results of measuring the rAAV vector production-enhancing effect of cisplatin, which inhibits DNA replication in the same way as carboplatin.
- the vertical axis indicates the amount of AAV vector produced (v.g.), and the horizontal axis indicates the concentration of the chemical substance.
- cisplatin like carboplatin, has the effect of enhancing AAV vector production, and a particularly high AAV vector production enhancing effect was observed at concentrations of 1 to 5 ⁇ g/ml.
- Fig. 6 shows the results of measuring the effect of nedaplatin, which inhibits DNA replication, on enhancing rAAV vector production.
- the vertical axis indicates the amount of AAV vector produced (v.g.), and the horizontal axis indicates the concentration of the chemical substance.
- nedaplatin like carboplatin, has the effect of enhancing AAV vector production, and a particularly high AAV vector production enhancing effect was observed at concentrations of 2 to 10 ⁇ g/ml.
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Abstract
Description
(2)ウイルスベクター産生細胞によるウイルスベクター生産に用いることを特徴とする(1)記載のウイルスベクター生産性増強剤。
(3)上記DNA複製阻害剤は、白金製剤であることを特徴とする(1)記載のウイルス生産性増強剤。
(4)ウイルスベクターを産生する細胞であって、DNA複製を阻害された細胞を培養する工程と、培養された上記細胞からウイルスベクターを回収する工程とを備える、ウイルスベクターの製造方法。
(5)上記細胞を培養する工程では、上記(1)乃至(3)いずれか記載のウイルスベクター生産性増強剤を含む培地で上記細胞を培養することを特徴とする(4)記載のウイルスベクターの製造方法。
本明細書は本願の優先権の基礎となる日本国特許出願番号2022-025036号の開示内容を包含する。
本発明において、DNA複製を阻害するとは、特に限定されないが、白金製剤等のDNA複製阻害剤を上記ウイルスベクター産生細胞に対して作用させることを意味する。本発明において使用可能な白金製剤としては、特に限定されないが、カルボプラチン、オキサリプラチン、シスプラチン及びネダプラチン並びにこれら化合物の類縁体を挙げることができる。なかでも、DNA複製阻害剤としては、下記構造式を有するカルボプラチン又はその類縁体を使用することが好ましい。
1)細胞培養
ATCCより購入したヒト胎児腎由来不死化細胞株HEK293細胞を10%の牛胎児血清、ペニシリン及びストレプトマイシンを含有したE-MEMで37℃、5%CO2環境下で培養した。
組み換えアデノ随伴ウイルス1(rAAV1)は、pAAV-ZsGreen1(TaKaRa Bio社製)、pAAV2/1及びpHelperの3種のプラスミドを使用して作製した。これらrAAV1作製プラスミド3種の混合液をOPTI-MEM内で、Polyethylenimine Max(PEI:Polysciences社製)とDNAとの混合比率がDNA:PEI=1:2となるように調整し、室温にて15分反応させた。90%以上のconfluent HEK293細胞に10%FBSを含むE-MEMで6時間トランスフェクションした後、無血清E-MEMで培養して作製した。
ウイルス力価を測定するためにrAAV1のゲノムDNAを抽出した。即ち、培養上清を回収し、37℃、1時間、benzonaseで処理した後、DNeasy Blood & Tissue kit(QIAGEN社製)でウイルスゲノムDNAを抽出、精製した。ウイルス力価はreal-time PCRにてtriplicateで測定した。PCRはZs-Green1を標的としたプライマーを用い、qPCRを行った。
24well plateにHEK293細胞を各well 4×105 cells播種した翌日、AAVベクター作製プラスミドを導入し、6時間後にトランスフェクション溶液を除去した後、下記表1に示した、DNA複製阻害剤であるカルボプラチン、シスプラチン又はネダプラチンを各濃度添加した無血清E-MEMに置換し3日間培養した。化学物質を添加しない無血清E-MEMを添加した群を対照としてウイルス力価を比較した。また、カルボプラチンについてAAV産生量の経時変化を4~7日に亘り追跡した。
化学物質で処理したHEK293細胞より産生されるAAVベクターの品質をSDS-PAGEによる純度測定及び感染力で評価した。
HEK293細胞を90%以上confluentになるまでスクエアディッシュ2枚に培養した。このHEK293細胞にAAVベクター作製プラスミドをトランスフェクションした。6時間後、カルボプラチンを添加した無血清-E-MEM(20μg/ml、72ml)で培地を置換し5日間培養した。対照は化学物質未処理のHEK293細胞とした。培養5日目にスクレイパーを用いて細胞を回収した。細胞は2000g・10分遠心し、AAVpro Purification Kit(TaKaRa Bio社製)でAAVベクターを抽出・精製・濃縮した。その後、qPCRにてウイルス力価を測定し、5~20% ポリアクリルアミド濃度勾配のゲルを用いて6.1×109 v.g./laneでSDS-PAGEを行った。泳動後、Oriole Fluorescent Gel Stain (Bio-RAD)でゲル染色し、AAVキャプシドタンパク質の主要バンド(VP1, VP2及びVP3)を化学発光撮影装置で撮影し、各バンドの比率(1:1:10)及び純度を解析した。
24well plateにHEK293細胞を各ウェル4×105 cellsとなるように播種し、AAVベクター作製プラスミドをトランスフェクションした後、化学物質で5日間処理した。その後、培養上清を回収した。対照は化学物質未処理のHEK293細胞とした。qPCRにてウイルス力価を測定し、96well plateに各ウェル6.25×103 cellsとなるように播種したHEK293細胞に1×105 v.g./cellにてトランスダクションした。トランスダクション3日後に倒立型リサーチ顕微鏡で緑色蛍光を観察・撮影した。
カルボプラチンによるrAAVベクター生産増強効果を測定した結果を図1に示した。図1において縦軸はAAVベクター生産量(v.g.)、横軸は化学物質の濃度を示している。図1から判るように、カルボプラチンは、AAVベクター生産量を増強する効果を有しており、特に20~40μg/mlの濃度範囲で高いAAVベクター生産増強効果が認められた。
Claims (5)
- DNA複製阻害剤を主成分とする、ウイルスベクター生産性増強剤。
- ウイルスベクター産生細胞によるウイルスベクター生産に用いることを特徴とする請求項1記載のウイルスベクター生産性増強剤。
- 上記DNA複製阻害剤は、白金製剤であることを特徴とする請求項1記載のウイルスベクター生産性増強剤。
- ウイルスベクターを産生する細胞であって、DNA複製を阻害された細胞を培養する工程と、培養された上記細胞からウイルスベクターを回収する工程とを備える、ウイルスベクターの製造方法。
- 上記細胞を培養する工程では、上記請求項1乃至3いずれか一項記載のウイルスベクター生産性増強剤を含む培地で上記細胞を培養することを特徴とする請求項3記載のウイルスベクターの製造方法。
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| CN202380022384.4A CN118715323A (zh) | 2022-02-21 | 2023-02-21 | 病毒载体生产率增强剂和病毒载体的制造方法 |
| JP2024501471A JPWO2023157977A1 (ja) | 2022-02-21 | 2023-02-21 | |
| EP23756501.5A EP4484552A4 (en) | 2022-02-21 | 2023-02-21 | VIRAL VECTOR PRODUCTIVITY ACTIVATOR AND VIRAL VECTOR PRODUCTION PROCESS |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020086812A1 (en) * | 1997-03-04 | 2002-07-04 | Schweinfest Clifford W. | Methods and compositions for diagnosis and treatment of cancer |
| JP2004532213A (ja) * | 2001-04-06 | 2004-10-21 | ザ ユニヴァーシティ オヴ シカゴ | Egr−1プロモーター活性の化学療法誘導 |
| JP6093358B2 (ja) | 2012-07-06 | 2017-03-08 | タカラバイオ株式会社 | アデノ随伴ウイルスベクターの産生細胞 |
| JP2017506885A (ja) | 2014-01-31 | 2017-03-16 | セクレタリー オブ ステート フォー ヘルスSecretary Of State For Health | アデノ随伴ウイルスベクターの高力価産生 |
| JP2020524498A (ja) | 2017-06-07 | 2020-08-20 | スパーク セラピューティクス インコーポレイテッドSpark Therapeutics, Inc. | 細胞トランスフェクション及び/又はrAAVベクター産生の改善のための増強剤 |
| CN112980884A (zh) * | 2021-03-03 | 2021-06-18 | 北京中因科技有限公司 | 一种提高腺相关病毒感染细胞感染效率的方法 |
| JP2022025036A (ja) | 2020-07-28 | 2022-02-09 | エボニック オペレーションズ ゲーエムベーハー | 1,4-シクロヘキサンジカルボン酸ジアルキルエステルの製造方法 |
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2023
- 2023-02-21 EP EP23756501.5A patent/EP4484552A4/en active Pending
- 2023-02-21 WO PCT/JP2023/006198 patent/WO2023157977A1/ja not_active Ceased
- 2023-02-21 CN CN202380022384.4A patent/CN118715323A/zh active Pending
- 2023-02-21 US US18/838,888 patent/US20250188480A1/en active Pending
- 2023-02-21 JP JP2024501471A patent/JPWO2023157977A1/ja active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020086812A1 (en) * | 1997-03-04 | 2002-07-04 | Schweinfest Clifford W. | Methods and compositions for diagnosis and treatment of cancer |
| JP2004532213A (ja) * | 2001-04-06 | 2004-10-21 | ザ ユニヴァーシティ オヴ シカゴ | Egr−1プロモーター活性の化学療法誘導 |
| JP6093358B2 (ja) | 2012-07-06 | 2017-03-08 | タカラバイオ株式会社 | アデノ随伴ウイルスベクターの産生細胞 |
| JP2017506885A (ja) | 2014-01-31 | 2017-03-16 | セクレタリー オブ ステート フォー ヘルスSecretary Of State For Health | アデノ随伴ウイルスベクターの高力価産生 |
| JP2020524498A (ja) | 2017-06-07 | 2020-08-20 | スパーク セラピューティクス インコーポレイテッドSpark Therapeutics, Inc. | 細胞トランスフェクション及び/又はrAAVベクター産生の改善のための増強剤 |
| JP2022025036A (ja) | 2020-07-28 | 2022-02-09 | エボニック オペレーションズ ゲーエムベーハー | 1,4-シクロヘキサンジカルボン酸ジアルキルエステルの製造方法 |
| CN112980884A (zh) * | 2021-03-03 | 2021-06-18 | 北京中因科技有限公司 | 一种提高腺相关病毒感染细胞感染效率的方法 |
Non-Patent Citations (1)
| Title |
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| JPWO2023157977A1 (ja) | 2023-08-24 |
| CN118715323A (zh) | 2024-09-27 |
| EP4484552A4 (en) | 2026-05-06 |
| US20250188480A1 (en) | 2025-06-12 |
| EP4484552A1 (en) | 2025-01-01 |
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