WO2017170335A1 - Cell culture vessel, support jig for cell culture vessel and cell culture method - Google Patents
Cell culture vessel, support jig for cell culture vessel and cell culture method Download PDFInfo
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- WO2017170335A1 WO2017170335A1 PCT/JP2017/012265 JP2017012265W WO2017170335A1 WO 2017170335 A1 WO2017170335 A1 WO 2017170335A1 JP 2017012265 W JP2017012265 W JP 2017012265W WO 2017170335 A1 WO2017170335 A1 WO 2017170335A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
- C12M1/04—Apparatus for enzymology or microbiology with gas introduction means
Definitions
- the present invention relates to a cell culture vessel, a cell culture vessel support jig, and a cell culture method for efficiently culturing various cells.
- well plates and flasks are often used as culture vessels for subculture.
- a well plate in order to obtain an appropriate cell density, add cells to the individual wells together with the culture medium, start culturing, allow the cells to grow sufficiently in the well, and then transfer to the flask. Incubate with additional culture medium according to the growth, and when it grows to a certain volume, transfer to a flask with a larger volume and add more culture medium. It is known (see, for example, paragraph [0027] of Patent Document 1).
- Patent Document 2 proposes a flask-type culture vessel in which a plurality of recesses are formed on one surface of a polyhedral shape such as a rectangular parallelepiped as a flask-type culture vessel.
- an agglomerate formed by coalescence of single cells is formed in a recess that is a plurality of first culture portions provided in the first culture surface, and this is formed on the second culture surface in the container. It moves to the 2nd culture part with a larger area than a culture part, and is trying to become a bigger aggregate.
- An object of the present invention is to provide a cell culture container, a cell culture container support jig, and a cell culture method.
- the cell culture container according to the present invention includes a container main body made of a gas permeable plastic film and an injection port, and the container main body has a peripheral portion sealed and a container top surface side having a bulging shape.
- a plurality of recesses to be cell culture parts are provided on the bottom surface of the container body.
- the cell culture container support jig is a jig for supporting the cell culture container, and is configured to support the bottom side of the container body in a non-contact manner with the recess.
- the cell culture method according to the present invention is a cell culture method using the above-described cell culture container, wherein the bottom surface side of the container body is supported in a non-contact manner on the concave portion, and the cell is formed on the bottom portion of the concave portion.
- cells can be efficiently cultured in the same container while reducing the risk of contamination while maintaining an appropriate cell density during culture.
- a cell culture container 1 shown in FIG. 1 includes a container main body 2 made of a gas permeable plastic film and an injection port 3 made of a tubular member through which a culture medium, cells, and the like can circulate.
- the container body 2 has a bulging shape in which the peripheral portion is sealed and the top surface 2a side bulges like a plateau, and the edge of the flat top surface 2a is inclined so as to be connected to the peripheral portion. Is formed.
- the bottom surface 2b of the container body 2 is provided with a plurality of recesses 4 serving as cell culture parts.
- the concave portion 4 provided on the bottom surface 2b of the container body 2 has an opening diameter (diameter) D of 0 in order to suppress the movement of cells in the container body 2 so that cells in culture remain in the single concave portion 4. It is preferably 3 to 10 mm, more preferably 0.3 to 5 mm, still more preferably 0.5 to 4 mm, particularly preferably 0.5 to 2 mm, and the depth d is 0.1 mm or more. Is preferred.
- the opening diameter of the recess 4 may be the same for all the recesses 4. For example, the bottom surface 2 b is divided into a plurality of regions, and the opening diameter of the recess 4 is made different for each region.
- the recessed part 4 to be provided may include two or more kinds of recessed parts having different opening diameters.
- the top surface 2a side of the container body 2 is bulged in a plateau shape, and the edge of the top surface 2a is inclined so as to be connected to the peripheral portion.
- the amount of the medium containing the cells decreases on the peripheral side and settles in the medium.
- the number of cells is also reduced.
- the opening diameters of all the recesses 4 are the same, the number of cells that settle into the recesses 4 on the peripheral side is reduced, so the same number of cells settle in all the recesses 4.
- the shape of the recess 4 is a spherical crown so that cells can easily gather at the bottom of the recess 4, but the shape of the recess 4 is not limited to this.
- the ratio d / D of the depth d to the opening diameter D of the recess 4 is preferably set to 0.05 to 1.
- the occupied area of the concave portion 4 occupying the bottom surface 2b is preferably as large as possible within a range in which the moldability is not impaired in order to avoid cells from staying in the portion other than the concave portion 4 of the bottom surface 2b. Specifically, it is preferably 30 to 90% with respect to the area of the bottom surface 2b.
- the recesses 4 are preferably arranged in a zigzag pattern as shown in the figure so that the area occupied by the recesses 4 in the bottom surface 2b is as large as possible. However, the recesses 4 may be arranged in a lattice pattern as necessary.
- the size of the container body 2 is not particularly limited, but is preferably, for example, 50 to 500 mm in length and 50 to 500 mm in width.
- Such a cell culture container 1 can be manufactured as follows, for example. First, a top surface side plastic film that becomes the top surface 2 a side of the container body 2 and a bottom surface side plastic film that becomes the bottom surface 2 b side of the container body 2 are prepared. And the top surface side plastic film is shape
- the top side plastic film and the bottom side plastic film molded as described above are overlapped, and the peripheral part is heat-sealed with a tubular member forming the injection port 3 at a predetermined position. And then trim the periphery if necessary. Thereby, the cell culture container 1 as shown in FIG. 1 can be manufactured.
- the gas permeability of the plastic film forming the container body 2 is determined according to the gas permeability test method of JIS K 7126.
- the oxygen permeability measured at a test temperature of 37 ° C. is 5000 mL / (m 2 ⁇ day ⁇ atm. ) Or more.
- it is preferable that a part or all of the plastic film has transparency so that the progress of cell culture and the state of cells can be confirmed.
- the material used for the plastic film forming the container body 2 is not particularly limited as long as it has a desired gas permeability.
- examples thereof include thermoplastic resins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyester, silicone elastomer, polystyrene elastomer, and tetrafluoroethylene-hexafluoropropylene copolymer (FEP). These may be used as a single layer, or may be used by laminating the same or different materials, but has a layer that functions as a sealant layer in consideration of heat fusion when sealing the periphery. Is preferred.
- the plastic film used for forming the container body 2 so as to have an appropriate shape retaining property capable of maintaining the bulging shape on the top surface 2a side and the shape of the concave portion 4 while having flexibility.
- the thickness is preferably 30 to 200 ⁇ m.
- the injection port 3 is composed of a tubular member through which a culture medium, cells, and the like can circulate, as described above, but the tubular member forming the injection port 3 is, for example, polyethylene, polypropylene, It can be molded into a predetermined shape by injection molding, extrusion molding, or the like using a thermoplastic resin such as vinyl chloride, polystyrene-based elastomer, or FEP.
- a thermoplastic resin such as vinyl chloride, polystyrene-based elastomer, or FEP.
- a port blocking prevention piece can be provided.
- a port blockage prevention piece is provided, it is preferably provided so as to be positioned on the top surface 2a side of the container body 2 so as not to hinder the sedimentation of cells into the recess 4 provided on the bottom surface 2b.
- the cells to be cultured together with the culture medium are placed in the vessel body 2 while maintaining a closed system via a liquid feeding tube connected to the injection port 3. inject. Then, the cells injected into the container body 2 settle in the medium and are collected at the bottom of each recess 4.
- the bottom surface is deformed so that the periphery is lifted as the container is filled with the content liquid.
- the top surface 2a side of the container body 2 has a bulging shape, and by designing the bulging shape on the top surface 2a side in consideration of the injection amount, It is possible to suppress the deformation of the bottom surface 2b when the cells to be cultured are injected together with the medium. Accordingly, the cells can be uniformly accommodated in the respective recesses 4 without the recesses 4 provided on the bottom surface 2b being inclined.
- a cell low adhesion treatment is applied to the bottom surface 2b including the recesses 4 so that the cells settled in the medium are likely to collect at the bottoms of the recesses 4 so that the cells do not adhere easily.
- the low cell adhesion treatment include, for example, a treatment for imparting hydrophilicity to the surface of the plastic film by a surface treatment such as a plasma treatment, a phospholipid polymer, a surfactant, a protein such as albumin, and the like. Treatment for inhibiting the adsorption of cell adhesion protein.
- the bottom surface 2b side also has a bulging shape that bulges in a plateau like the top surface 2a side. By doing in this way, it is formed so that the edge of bottom face 2b may incline and continue to a peripheral part, and it can avoid that a cell retains in the peripheral part side of bottom face 2b. Furthermore, it is preferable that the bottom surface 2b side of the container body 2 also has a bulging shape in order to suppress deformation of the bottom surface 2b when the cells to be cultured are injected together with the culture medium.
- the cells injected into the container body 2 settle in the medium and gather at the bottom of each recess 4, and the cell density is increased in a state where the cell density is increased. It can induce culture and differentiation well. And since the container main body 2 consists of a plastic film which has gas permeability, it can supply sufficient quantity of oxygen to the cell in culture
- the concave portion 4 is formed on the bottom surface side plastic film as described above, the plastic film is stretched so that the thickness of the concave portion 4 is other than the concave portion 4 of the bottom surface 2b. It is preferable to make the thickness thinner than the thickness of the portion, whereby the gas permeability of the recess 4 can be increased, and sufficient oxygen can be supplied to the cells collected in the recess 4.
- cells when performing cell culture using the cell culture container 1, cells can be cultured under predetermined conditions in a culture vessel such as a CO 2 incubator.
- the cell culture vessel 1 is preferably installed on a frame in the incubator via a jig 10 that can support the bottom surface 2 b side of the concave portion 4 in a non-contact manner.
- the concave portion 4 is surely prevented from being crushed and deformed, and the cells in culture collected in the concave portion 4 are prevented from flowing out around the concave portion 4.
- the gas permeability from the bottom surface 2b can be maximized.
- a perforation or a recess having a diameter that allows the recess 4 to be inserted in a non-contact manner corresponds to the arrangement of the recess 4
- the top surface 2a is used as the culture surface with the top of the cell culture container 1 reversed. By using it, the culture area can be expanded. This makes it possible to continue cell culture while maintaining an appropriate cell density in the same container.
- the cells to be cultured are anchorage-dependent cells
- an enzyme solution for peeling the cells from the bottom surface of the recesses 4 is added as necessary. In this case, the enzyme solution can be injected into the container body 2 while maintaining a closed system via the liquid feed tube connected to the injection port 3. .
- cell culture usually requires a period of several days to several weeks, and during that period, it is necessary to add a medium or change a medium as necessary. These operations can be easily performed while maintaining the closed system by adding the medium or replacing the medium through the liquid feeding tube connected to the. Furthermore, after completion of the culture, the cells in the cell culture vessel 1 can be recovered while maintaining the closed system via the liquid feeding tube connected to the injection port 3.
- the cell density at the time of culture is appropriately maintained while maintaining a closed system without subculture, and the cells are efficiently used. It is possible to multiply it. Moreover, a complicated transfer operation is not required, and cells can be efficiently cultured in the same container while reducing the risk of contamination.
- the container body 2 is formed using a plastic film, it is lightweight even if the capacity is increased and is not bulky. Therefore, the container body 2 is suitable for large-scale cell culture. A sufficient amount of medium can be injected. In addition, the size of the container body 2 can be adjusted using a clamp or the like, and can be flexibly handled according to the number of cells and the amount of medium. On the other hand, in the flask type culture container as in Patent Document 2, it is necessary to replace the container with a different size.
- the container main body 2 has a rectangular shape and includes the injecting port 3 on one side of the short side, but is not limited thereto.
- the shape of the container body 2 may be a square shape, an oval shape, a circular shape, or the like, and can be various shapes as necessary.
- the position and the number of the injection ports 3 can be changed as appropriate.
- the present invention can be used as a technique for efficiently culturing various cells.
Abstract
Description
例えば、本実施形態では、容器本体2の天面2a側を台地状に膨出させて、天面2aの縁が傾斜して周辺部に連なるように形成している。このようにすると周辺部側の高さが低くなるので、培地とともに培養対象の細胞を容器本体2に注入した際に、細胞を含む培地の量が周辺部側で少なくなり、培地中を沈降する細胞数も少なくなる。そうすると、全ての凹部4の開口径を同一にすると、周辺部側の凹部4に沈降して入る細胞数が少なくなってしまうため、全ての凹部4に同じ程度の数の細胞が沈降して入ってくるように、周辺部側では凹部4の開口径を大きくするのが好ましい。 The
For example, in the present embodiment, the
まず、容器本体2の天面2a側となる天面側プラスチックフィルムと、容器本体2の底面2b側となる底面側プラスチックフィルムとを用意する。そして、天面側プラスチックフィルムを、その周辺部を残して台地状に膨出するように成形する。一方、底面側プラスチックフィルムには、複数の凹部4を所定の配列で成形する。これらは、一般的な真空成形や圧空成形などによって形成することが可能であり、金型などを適宜調整することで、膨出形状や凹部4の形状が所望の形状となるように成形することができる。 Such a cell culture container 1 can be manufactured as follows, for example.
First, a top surface side plastic film that becomes the
また、当該プラスチックフィルムは、細胞培養の進行状況や細胞の状態などを確認できるように、一部又は全部が透明性を有しているのが好ましい。 The gas permeability of the plastic film forming the
Moreover, it is preferable that a part or all of the plastic film has transparency so that the progress of cell culture and the state of cells can be confirmed.
なお、このような態様とする場合、前述したようにして細胞培養容器1を製造する際に、底面側プラスチックフィルムを、その周辺部を残して膨出するように成形するとともに、膨出させた部位に凹部4を成形するようにすればよい。 In addition, in order to avoid the cells from staying in the portion other than the
In addition, when setting it as such an aspect, when manufacturing the cell culture container 1 as mentioned above, while making the bottom face side plastic film bulge leaving the peripheral part, it was bulged. What is necessary is just to make it form the recessed
なお、培養対象の細胞が足場依存性の細胞である場合には、細胞培養容器1の天地を逆にする際に、必要に応じて、細胞を凹部4の底面から剥離するための酵素溶液を容器本体2に注入するが、この場合であっても、注入出用ポート3に接続された液送チューブを介して閉鎖系を維持しつつ、かかる酵素溶液を容器本体2に注入することができる。 When the cells collected at the bottom of the
When the cells to be cultured are anchorage-dependent cells, when reversing the top and bottom of the cell culture container 1, an enzyme solution for peeling the cells from the bottom surface of the
2 容器本体
2a 天面
2b 底面
3 注入出用ポート
4 凹部
10 治具 DESCRIPTION OF SYMBOLS 1
Claims (10)
- ガス透過性を有するプラスチックフィルムからなる容器本体と、注入出用ポートとを備え、
前記容器本体は、周辺部がシールされ、容器天面側が膨出形状を有するとともに、
前記容器本体の底面に細胞培養部となる凹部を複数設けたことを特徴とする細胞培養容器。 A container body made of a plastic film having gas permeability and an injection port are provided.
The container body is sealed at the periphery, and the container top surface has a bulging shape,
A cell culture container, wherein a plurality of recesses serving as cell culture parts are provided on the bottom surface of the container body. - 前記凹部は、開口径が0.3~10mmであり、深さが0.1mm以上である請求項1に記載の細胞培養容器。 2. The cell culture container according to claim 1, wherein the recess has an opening diameter of 0.3 to 10 mm and a depth of 0.1 mm or more.
- 前記底面に占める前記凹部の占有面積が、前記底面の面積に対して30~90%である請求項1又は2に記載の細胞培養容器。 The cell culture container according to claim 1 or 2, wherein an area occupied by the concave portion in the bottom surface is 30 to 90% with respect to an area of the bottom surface.
- 前記凹部が、開口径が異なる二種以上の凹部を含む請求項1~3のいずれか一項に記載の細胞培養容器。 The cell culture container according to any one of claims 1 to 3, wherein the concave portion includes two or more types of concave portions having different opening diameters.
- 前記プラスチックフィルムの酸素透過度が、5000mL/(m2・day・atm)以上である請求項1~4のいずれか一項に記載の細胞培養容器。 The cell culture container according to any one of claims 1 to 4, wherein the oxygen permeability of the plastic film is 5000 mL / (m 2 · day · atm) or more.
- 前記凹部の肉厚が、前記底面の前記凹部以外の部分の肉厚に比べて薄肉にされた請求項1~5のいずれか一項に記載の細胞培養容器。 The cell culture container according to any one of claims 1 to 5, wherein the thickness of the recess is thinner than the thickness of the bottom surface other than the recess.
- 前記凹部を含む前記底面に、細胞低接着処理を施した請求項1~6のいずれか一項に記載の細胞培養容器。 The cell culture container according to any one of claims 1 to 6, wherein the bottom surface including the concave portion is subjected to a low cell adhesion treatment.
- 前記注入出用ポートの基端から前記容器本体内に突出するポート閉塞防止片を、前記天面側に位置するように設けた請求項1~7のいずれか一項に記載の細胞培養容器。 The cell culture container according to any one of claims 1 to 7, wherein a port blockage prevention piece protruding into the container main body from the base end of the injection port is provided so as to be positioned on the top surface side.
- 請求項1~8のいずれか一項に記載の細胞培養容器を支持する治具であって、
前記容器本体の底面側を前記凹部に非接触で支持可能なことを特徴とする細胞培養容器の支持治具。 A jig for supporting the cell culture container according to any one of claims 1 to 8,
A support jig for a cell culture vessel, wherein the bottom side of the vessel body can be supported in a non-contact manner on the recess. - 請求項1~8のいずれか一項に記載の細胞培養容器を用いた細胞培養方法であって、
前記容器本体の底面側を前記凹部に非接触で支持して、前記凹部の底部に細胞を集めて培養することを特徴とする細胞培養方法。 A cell culture method using the cell culture container according to any one of claims 1 to 8,
A cell culture method comprising: supporting a bottom surface of the container body in a non-contact manner with the recess; and collecting and culturing cells at the bottom of the recess.
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EP17774872.0A EP3438237A4 (en) | 2016-03-31 | 2017-03-27 | Cell culture vessel, support jig for cell culture vessel and cell culture method |
KR1020207035625A KR102328979B1 (en) | 2016-03-31 | 2017-03-27 | Cell culture vessel, support jig for cell culture vessel and cell culture method |
CN201780011599.0A CN108699500B (en) | 2016-03-31 | 2017-03-27 | Cell culture container, support jig for cell culture container, and cell culture method |
KR1020187022886A KR102222874B1 (en) | 2016-03-31 | 2017-03-27 | Cell culture vessel, support jig for cell culture vessel, and cell culture method |
US16/148,229 US11414637B2 (en) | 2016-03-31 | 2018-10-01 | Cell culture vessel, support jig for cell culture vessel and cell culture method |
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JP2016208335A JP2017184716A (en) | 2016-03-31 | 2016-10-25 | Cell culture containers, supporting jigs for cell culture containers, and cell culture methods |
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