WO2021133084A1 - 베로 세포 배양용 저혈청 배지 조성물 및 이의 이용 - Google Patents
베로 세포 배양용 저혈청 배지 조성물 및 이의 이용 Download PDFInfo
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- WO2021133084A1 WO2021133084A1 PCT/KR2020/019066 KR2020019066W WO2021133084A1 WO 2021133084 A1 WO2021133084 A1 WO 2021133084A1 KR 2020019066 W KR2020019066 W KR 2020019066W WO 2021133084 A1 WO2021133084 A1 WO 2021133084A1
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Definitions
- the present invention relates to a low-serum medium composition for culturing Vero cells, and a method for culturing Vero cells and a virus production method using the same.
- Vero cells are a continuous cell line widely approved and used for the manufacture of viral vaccines. Vero cells were first isolated from African green monkey kidney cells and are used in the production of an inactivated poliovirus vaccine (IPV), a live oral polio vaccine, and a rabies vaccine. Vero cells have wide susceptibility to various viruses, are reported to be safe from carcinogenesis, and do not pose a threat to human health by the World Health Organization, so Vero cell-derived vaccines are currently being supplied worldwide.
- IPV inactivated poliovirus vaccine
- Vero cells have wide susceptibility to various viruses, are reported to be safe from carcinogenesis, and do not pose a threat to human health by the World Health Organization, so Vero cell-derived vaccines are currently being supplied worldwide.
- a medium to which an animal-derived material eg, serum, trypsin, albumin, etc.
- an animal-derived material eg, serum, trypsin, albumin, etc.
- serum contains substances that promote the survival and proliferation of cells, such as nutrients, hormones, growth factors, and cytokines, and plays an essential function in cell growth, protects cells from physical damage or shear force, and adheres cells to the container. Since it facilitates attachment and spreading, there is an advantage that the culture medium can be mimicked similarly to the in vivo environment.
- Vero cells are adherent cells, and are generally cultured by attaching to a microcarrier in a normal medium containing 10% Fetal Bovine Serum (FBS).
- FBS Fetal Bovine Serum
- the main component contained in FBS is albumin, which is known as a protein that plays an important role in cell adhesion.
- albumin which is known as a protein that plays an important role in cell adhesion.
- NCS newborn calf serum
- hydrolysate 1-6 g/L hydrolysate 1-6 g/L
- medium composition for culturing Vero cells comprising 1 to 6 mg/L of insulin.
- NCS newborn calf serum
- NCS newborn calf serum
- hydrolysate 1-6 g/L hydrolysate 1-6 g/L
- virus production method comprising the step of culturing Vero cells in a medium composition comprising 1-6 mg/L of insulin.
- Figure 2 shows the results of Vero cell culture in the medium conditions according to an example (Experiment No. 2) of the present application.
- Figure 3 shows the results of Vero cell culture in the medium conditions according to an example (Experiment No. 3) of the present application.
- Figure 4 shows the results of Vero cell culture in the medium conditions according to an example (Experiment No. 4) of the present application.
- Figure 5 shows the results of Vero cell culture in the medium conditions according to an example (Experiment No. 5) of the present application.
- Figure 6 shows the results of Vero cell culture in the medium conditions according to an example (Experiment No. 6) of the present application.
- newborn calf serum (NCS) 1-7% (v/v); hydrolysate 1-6 g/L; And insulin comprising 1-6 mg/L, a medium composition for culturing Vero cells is provided.
- the medium composition may not include Fetal Bovine Serum (FBS).
- FBS Fetal Bovine Serum
- the hydrolyzate may be an animal component-free, protein-free hydrolyzate.
- the Vero cells may be cultured attached to a microcarrier (microcarrier).
- the Vero cells may include culturing attached to a microcarrier (microcarrier).
- the medium may include MEM medium.
- a method for culturing Vero cells comprising the step of culturing Vero cells in the medium composition.
- the culture may be performed on a scale of 10mL to 1000L.
- the method comprising: infecting Vero cells cultured in the medium composition with a virus; and culturing the Vero cells infected with the virus, a virus production method is provided.
- the culture of Vero cells infected with the virus may be performed on a scale of 10mL to 2000L.
- Vero cell refers to any Vero cell line or cell line cultured or passaged therefrom, including, but not limited to, genetically modified Vero cells.
- known Vero cells include VERO (ATCC Number CCL-81), VERO C1008 (ATCC Number CRL-1586), VERO 76 (ATCC Number CRL-1587) and Vero-SF-ACF (ATCC Number CCL-) 81.5) can be exemplified.
- Vero cell culture includes any procedure in which Vero cells are grown or maintained in a viable state.
- culturing of Vero cells includes not only a process in which the cells grow or proliferate, but also a process in which the number of cells is not substantially increased but a viable state is maintained.
- the Vero cells herein may be used as a vehicle for a viral vaccine, or a treatment regimen based on a virus or viral vector.
- Vero cells may be infected with a virus to produce a virus.
- the virus that can be produced from Vero cells can be an attenuated virus, a recombinant virus, or an oncolytic virus.
- viruses that can be produced in Vero cells include poliovirus, enterovirus, IBDV (infectious cyst virus), rotavirus, measles virus, smallpox virus, influenza virus, Japanese encephalitis virus, rabies virus, Newcastle disease virus, respiratory syncytial virus Virus (RSV), Sendai virus, simian virus 40 (SV40), chikungunia virus and dengue virus may be exemplified, but is not limited thereto.
- culture medium is used for culturing Vero cells and refers to a composition containing the components necessary for growth.
- any medium generally known in the art such as MEM, DMEM, DMEM/F12, MDSS2, CCM5, Medium 199, or RPMI, may be used as the basal medium.
- Such culture medium may contain a number of components including amino acids, vitamins, organic and inorganic salts and carbohydrate sources that support the culture of Vero cells.
- composition comprising (a given component)” can mean comprising or constituting essentially of a component other than the component described. .
- the medium for Vero cell culture herein is, in the basal medium, newborn calf serum (NCS) 1 to 7% (v/v), hydrolysate 1 to 6 g/L, and insulin 1 Medium supplemented with ⁇ 6 mg/L.
- NCS newborn calf serum
- hydrolysate 1 to 6 g/L
- insulin 1 Medium supplemented with ⁇ 6 mg/L.
- the medium for Vero cell culture herein is, in the basal medium, newborn calf serum (NCS) 1 to 7% (v/v), for example, 1 to 7% (v/v), 1 to 6% (v/v), 1-5% (v/v), 1-4% (v/v), 1-3% (v/v), 1% (v/v), 2% (v) /v), 3% (v/v), 4% (v/v), 5% (v/v), 6% (v/v) or 7% (v/v); Hydrolysate 1-6 g/L, such as 1-6 g/L, 1-5 g/L, 1-4 g/L, 1-3 g/L, 1-2 g/L, 2-4 g/L, 2-3 g/L or 2 g/L; and insulin 1-6 mg/L, such as 1-6 mg/L, 1-5 mg/L, 1-4 mg/L, 1-3 mg/L, 2-6 mg/L, 2-5 Medium supplemented with mg/L, 2-4 mg/
- Neonatal calf serum is serum from newborn calves, typically from calves of about 20 days or less, such as about 14 days or less, or about 10 days or less, or about 3 to 10 days old, It is sold at 1/10 the price of fetal bovine serum (FBS). It is essential to have price competitiveness in order for the developed vaccine to enter the bidding market, and the use of neonatal bovine serum (NCS) instead of fetal bovine serum (FBS) has a clear cost reduction effect. In addition, neonatal bovine serum (NCS) is more stable in terms of supply than fetal bovine serum (FBS) and has less lot variation, so consistent experimental results can be obtained, and it is advantageous from the viewpoint of animal ethics.
- NCS neonatal calf serum
- FBS calf serum
- FBS fetal bovine serum
- concentration range may be appropriately increased or decreased within the level of ordinary skill of those skilled in the art when other culture conditions affecting virus productivity are changed.
- hydrolysate refers to a substance obtained by breaking a peptide bond of a protein, which is derived from milk (eg, casein, whey protein), or animal-derived. It may be of protein (meat, collagen), or of plant origin.
- the vegetable hydrolyzate can be, but is not limited to, soybean hydrolyzate, wheat hydrolyzate, potato hydrolyzate, cottonseed hydrolyzate, rice hydrolyzate, pea hydrolyzate, or corn hydrolyzate, and the like.
- animal component and protein produced by different methods such as digestion and processing (animal component-free, protein-free) hydrolyzate can be used.
- animal component and protein free hydrolysates specifically Hypep TM 1510, Hypep TM 1511, Hypep TM 5603, Sheff-CHO PF ACF, Sheff-CHO Plus PF ACF, Sheff-VAX PF ACF SheffVax Plus PF ACF, SheffVax Plus PF ACF VP and the like may be exemplified, but the scope of the present application is not limited thereto.
- the hydrolyzate may be included in an amount of 1 to 10 g/L, but since it may have a negative effect on cell growth under high concentration conditions, the experiment was performed by limiting it to 6 g/L in the present Example. Therefore, in a preferred embodiment, considering the concentration that has a positive effect on cell growth, the hydrolyzate is 1-6 g/L, for example, 1-6 g/L, 1-5 g/L, 1-4 g /L, 1-3 g/L, 1-2 g/L, 2-4 g/L, 2-3 g/L or 2 g/L may be given as preferred concentrations. However, the concentration range may be appropriately increased or decreased within the level of ordinary skill of those skilled in the art when other culture conditions affecting virus productivity are changed.
- the medium composition herein also includes insulin.
- the insulin may be natural insulin or recombinant insulin, and more specifically, human recombinant insulin, but is not limited thereto.
- Insulin in the medium composition of the present application is 1-6 mg/L, 1-5 mg/L, 1-4 mg/L, 1-3 mg/L, 2-6 mg/L, 2-5 mg/L, 2 It may contain ⁇ 4 mg/L, 2-3 mg/L or 3 mg/L. However, the concentration range may be appropriately increased or decreased within the level of ordinary skill of those skilled in the art when other culture conditions affecting virus productivity are changed.
- Vero cells may be cultured by being attached to a carrier such as a microcarrier.
- a microcarrier has a micro-level diameter and refers to any solid support matrix to which Vero cells can be attached.
- cells can be cultured in suspension in a liquid medium by attaching the cells to the surface.
- the material of the microcarrier include plastics such as polystyrene, polyethylene, polypropylene, polyester, polycarbonate, polyamide, polyacetal and polyurethane, and copolymers thereof; Glass; ceramic; metal; acrylamide; silica; silicone rubber; polylysine; cellulose; dextran; collagen (gelatin); and glycosaminoglycans may be used, but is not limited thereto.
- a microcarrier is at least about 100 ⁇ m, at least about 200 ⁇ m, at least about 300 ⁇ m, at least about 400 ⁇ m, at least about 500 ⁇ m, at least about 600 ⁇ m, at least about 700 ⁇ m, at least about 800 ⁇ m, at least about 900 ⁇ m, or about It may have a diameter of 1 mm or more, and may be in the form of beads (spherical), disk, strip, sheet, fiber, filament, rod, disk, cube, tube, etc., but is not limited thereto.
- the microcarrier may be porous.
- the culture of Vero cells is 10mL to 1000L or more, for example, 10mL to 2000L or more scale can be performed, and it is possible to produce on a scale of 10mL or more in a bioreactor.
- Bioreactor refers to any vessel that can be used to culture Vero cells, including a fixed bed bioreactor having a fixed bed containing microcarriers.
- Vero cells may be cultured on a microcarrier in a bioreactor, and as another example, may be suspension cultured in a bioreactor in a batch process or fed-batch batch process.
- the medium may be exchanged as needed during the culture period.
- the pH of the medium is preferably about 6 to 8, and may be about 6.5 to 7.5, or about 7.
- Cultivation can be carried out for about 5 to 9 days at about 35° C. to 40° C., and aeration or agitation may be added as necessary, but is not limited thereto.
- the dissolved oxygen concentration (DO) during cell culture may be about 60 to 90%, about 70 to 80%, etc., but is not limited thereto.
- the Vero cells cultured according to the present invention can be used to produce viruses as a vehicle for a viral vaccine or a treatment regimen based on a virus or a viral vector. Accordingly, the present invention also comprises the steps of infecting the Vero cells cultured in the medium composition as described above with a virus; And it provides a virus production method comprising the step of culturing the virus-infected Vero cells.
- Virus-infected Vero cells can be cultured under conditions optimized for virus propagation.
- Vero cells may be cultured at a first temperature prior to infection with the virus and cultured at a second temperature after infection with the virus, wherein the second temperature is lower than the first temperature.
- Vero cells can be cultured at about 37° C. before infection with the virus, ie, before infection, and cultured at about 29° C. to about 37° C. after infection with the virus, ie, after infection.
- Vero cells may be cultured at about 33° C. after infection with the virus.
- Vero cells may be cultured at about 30° C. after infection with the virus.
- the time of infection may be 1 day, 2 days, or 3 or 4 days after cell inoculation.
- the microcarrier After completion of the virus culture, the microcarrier can be removed and the virus solution containing the virus can be recovered.
- the recovered virus solution may be filtered through a filtration membrane or the like to remove cell debris, or may be concentrated and/or purified before or after inactivation.
- concentration method an ultrafiltration method, ultracentrifugation method, dialysis method, etc. can be exemplified.
- purification method for example, a method using physical properties such as size, density, sedimentation coefficient, etc. of the object to be purified, chemical or physicochemical A method using a reaction (adsorption/desorption, etc.) may be exemplified, but is not limited thereto.
- Vero cells were attached to microcarriers and cultured in shake flasks or bioreactors.
- Insulin Recombinant human insulin (Gibco, USA)
- FBS Fetal Bovine Serum (Hyclone, USA)
- NCS newborn calf serum (Hyclone, USA)
- BRX bioreactor (Model: Biostat B, Sartorius, Germany)
- Vero cells When the concentration of FBS was reduced and hydrolysate was added, the growth effect of Vero cells was confirmed.
- Vero cells cells derived from ATCC Number CCL-81 were used.
- MEM medium containing amino acids, vitamins, minerals, glucose, etc. supplemented with 5% FBS was used, and as an experimental group, 2% FBS + 2.5 g/L Hydrolysate, or 1% FBS + 2.5 g/L Hydrolysate was used. Each supplemented MEM medium was used.
- Vero cells ATCC Number CCL-81-derived cells were used.
- MEM medium containing amino acids, vitamins, minerals, glucose, etc. supplemented with 5% FBS was used, and as an experimental group, 2% FBS, 1% FBS, 0% FBS, 2% FBS + 2.5 g/L Hydrolysate was used.
- sample ID FBS Hydrolysate (g/L) Insulin (mg/L) M5 5 0 0 S1 One 0 0 S2 One 0 6 S3 One 6 0 S4 One 6 6 S5 1.5 3 3 S6 1.5 3 3 S7 1.5 3 3 S8 2 0 0 S9 2 0 6 S10 2 6 0 S11 2 6 6 S12 2 2 0 S13 2 2 3 S14 2 2 6 S15 2 4 0 S16 2 4 3 S17 2 4 6
- the final cell number was the highest in the case of 6 g/L Hydrolysate condition (S10).
- the condition (S13) supplemented with 3 mg/L insulin was selected as the condition for culturing in the bioreactor. It was determined that the cell growth rate at the initial stage of the culture was fast, which was more favorable for cell growth when fed-batch culture was performed in the bioreactor (FIG. 3).
- seed culture and main culture were performed using MEM medium supplemented with 5% FBS (#R02), and as an experimental group, 2% NCS + 2 g/L Hydrolysate + 3 mg/L insulin (#R03), Or 2% FBS + 2 g / L Hydrolysate + 3 mg / L insulin was performed in MEM medium supplemented with seed culture and main culture (#R04) (temperature 37 °C, pH 7.2 ⁇ 0.05, DO 50%, culture method: Fed-batch, culture days: seed culture and main culture 18 days culture progress).
- the culture scale was changed to 2L, 40L and 1000L with a medium (2% NCS + 2 g/L Hydrolysate + 3 mg/L insulin) selected as a medium composition containing NCS, Hydrolysate, and insulin that can replace FBS. It was checked to see if cell growth was maintained by zooming in. (Temperature 37°C, pH 7.2 ⁇ 0.05, DO 50%, culture method: Fed-batch, number of incubation days: seed culture and main culture for 18 days). Vero cells cultured in each condition were infected with the virus and recovered after culturing for 3 to 4 days to compare virus productivity.
- a medium 2% NCS + 2 g/L Hydrolysate + 3 mg/L insulin
- the results of comparing cell growth in the medium condition containing FBS and the medium condition containing NCS, Hydrolysate, and insulin at the 1000L scale are shown in FIG. 8, and it was confirmed that the same or higher cell growth was shown even at the 1000L scale.
- the virus productivity before and after the change to NCS, Hydrolysate, and Insulin composition medium was compared by culture scale and shown in FIG. 8 . After changing the medium, the virus productivity was further increased, and even when it was expanded to a 2000L culture scale, it was possible to confirm the virus productivity of equal or higher.
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Abstract
Description
| 실험No. | 대조군 | 실험군 | 실험규모 |
| 1 | 5% FBS | - 2% FBS + 2.5 g/L Hydrolysate - 1% FBS + 2.5 g/L Hydrolysate |
40mL (쉐이크플라스크) |
| 2 | 5% FBS | - 2% FBS- 1% FBS - 0% FBS - 2% FBS + 2.5 g/L Hydrolysate + 3mg/L 인슐린 - 1% FBS + 2.5 g/L Hydrolysate + 3mg/L 인슐린 - 0% FBS + 2.5 g/L Hydrolysate + 3mg/L 인슐린 |
30mL (쉐이크플라스크) |
| 3 | 5% FBS | - 1~2% FBS + 0~6 g/L Hydrolysate + 0~6 mg/L 인슐린 | 30mL(쉐이크플라스크) |
| 4 | 5% FBS | - 1%, 2% FBS - 1%, 2%, 5% NCS |
30mL (쉐이크플라스크) |
| 5 | 5% FBS | - 2% FBS + 2 g/L Hydrolysate + 3mg/L 인슐린 - 2% NCS + 2 g/L Hydrolysate + 3mg/L 인슐린 |
2L (BRX) |
| 6 | 2% FBS + 2 g/L Hydrolysate + 3mg/L 인슐린 | - 2% NCS + 2 g/L Hydrolysate + 3mg/L 인슐린 - 7% NCS + 2 g/L Hydrolysate + 3mg/L 인슐린 |
2L (BRX) |
| 7 | 2L | - 40L - 1000L |
40L 1000L |
| 샘플ID | FBS(%) | Hydrolysate(g/L) | 인슐린(mg/L) |
| M5 | 5 | 0 | 0 |
| S1 | 1 | 0 | 0 |
| S2 | 1 | 0 | 6 |
| S3 | 1 | 6 | 0 |
| S4 | 1 | 6 | 6 |
| S5 | 1.5 | 3 | 3 |
| S6 | 1.5 | 3 | 3 |
| S7 | 1.5 | 3 | 3 |
| S8 | 2 | 0 | 0 |
| S9 | 2 | 0 | 6 |
| S10 | 2 | 6 | 0 |
| S11 | 2 | 6 | 6 |
| S12 | 2 | 2 | 0 |
| S13 | 2 | 2 | 3 |
| S14 | 2 | 2 | 6 |
| S15 | 2 | 4 | 0 |
| S16 | 2 | 4 | 3 |
| S17 | 2 | 4 | 6 |
| 배양규모 | 2L (n=6) | 40L (n=3) |
| 최종 세포밀도 (X105 cells/mL) |
15.03 | 17.95 |
| SGR, D1~4 (day-1) | 0.68 | 0.71 |
| SGR, D1~6 (day-1) | 0.53 | 0.56 |
Claims (9)
- 신생우아혈청(newborn calf serum, NCS) 1~7%(v/v),가수분해물 (hydrolysate) 1~6 g/L, 및인슐린 1~6 mg/L을 포함하는, 베로 세포의 배양용 배지 조성물.
- 제1항에 있어서, 우태아혈청(Fetal Bovine Serum, FBS)을 포함하지 않는 것을 특징으로 하는, 배지 조성물.
- 제1항에 있어서, 상기 가수분해물이, 동물성 요소 및 단백질이 없는 동물성 요소 및 단백질이 없는(animal component-free, protein-free) 가수분해물인, 배지 조성물.
- 제1항에 있어서, 상기 베로 세포가 마이크로캐리어(microcarrier)에 부착되어 배양되는 것을 포함하는, 배지 조성물.
- 제1항에 있어서, 상기 배지가 MEM 배지를 포함하는, 배지 조성물.
- 제1항 내지 제5항 중 어느 한 항의 배지 조성물에서 베로 세포를 배양하는 단계를 포함하는, 베로 세포의 배양 방법.
- 제6항에 있어서, 상기 배양이 10mL 내지 1000L 의 스케일로 행해지는, 방법.
- 제1항 내지 제5항 중 어느 한 항의 배지 조성물에서 배양된 베로 세포에 바이러스를 감염하는 단계; 및바이러스가 감염된 베로 세포를 배양하는 단계를 포함하는, 바이러스 생산 방법.
- 제8항에 있어서, 바이러스가 감염된 베로 세포의 배양이 10mL 내지 2000L 의 스케일로 행해지는, 방법.
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|---|---|---|---|
| CN202080088683.4A CN114929855A (zh) | 2019-12-24 | 2020-12-24 | 用于培养vero细胞的低血清培养基组合物及其用途 |
| US17/788,774 US12559728B2 (en) | 2019-12-24 | 2020-12-24 | Low-serum medium composition for culturing Vero cells and use thereof |
| JP2022539023A JP7508072B2 (ja) | 2019-12-24 | 2020-12-24 | ベロ細胞培養用低血清培地組成物およびその利用 |
| EP20907923.5A EP4071237A4 (en) | 2019-12-24 | 2020-12-24 | COMPOSITION OF A LOW SERUM MEDIUM FOR GROWING VERO CELLS AND THEIR USE |
| JP2024033942A JP2024071406A (ja) | 2019-12-24 | 2024-03-06 | ベロ細胞培養用低血清培地組成物およびその利用 |
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| KR10-2019-0174356 | 2019-12-24 | ||
| KR20190174356 | 2019-12-24 |
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| PCT/KR2020/019066 Ceased WO2021133084A1 (ko) | 2019-12-24 | 2020-12-24 | 베로 세포 배양용 저혈청 배지 조성물 및 이의 이용 |
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| US (1) | US12559728B2 (ko) |
| EP (1) | EP4071237A4 (ko) |
| JP (2) | JP7508072B2 (ko) |
| KR (1) | KR102817858B1 (ko) |
| CN (1) | CN114929855A (ko) |
| WO (1) | WO2021133084A1 (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113480652A (zh) * | 2021-07-30 | 2021-10-08 | 成都景泽生物制药有限公司 | 一种重组cho细胞发酵培养生产重组egfr抗体活性分子的方法 |
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| CN113480652A (zh) * | 2021-07-30 | 2021-10-08 | 成都景泽生物制药有限公司 | 一种重组cho细胞发酵培养生产重组egfr抗体活性分子的方法 |
| CN113480652B (zh) * | 2021-07-30 | 2023-04-07 | 成都景泽生物制药有限公司 | 一种重组cho细胞发酵培养生产重组egfr抗体活性分子的方法 |
Also Published As
| Publication number | Publication date |
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| US20230036987A1 (en) | 2023-02-02 |
| JP2024071406A (ja) | 2024-05-24 |
| JP2023508970A (ja) | 2023-03-06 |
| US12559728B2 (en) | 2026-02-24 |
| EP4071237A1 (en) | 2022-10-12 |
| EP4071237A4 (en) | 2023-03-08 |
| KR20210082119A (ko) | 2021-07-02 |
| CN114929855A (zh) | 2022-08-19 |
| JP7508072B2 (ja) | 2024-07-01 |
| KR102817858B1 (ko) | 2025-06-10 |
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