WO2017183570A1 - 細胞培養用容器、及びその使用方法 - Google Patents
細胞培養用容器、及びその使用方法 Download PDFInfo
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- WO2017183570A1 WO2017183570A1 PCT/JP2017/015248 JP2017015248W WO2017183570A1 WO 2017183570 A1 WO2017183570 A1 WO 2017183570A1 JP 2017015248 W JP2017015248 W JP 2017015248W WO 2017183570 A1 WO2017183570 A1 WO 2017183570A1
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- 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
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/34—Internal compartments or partitions
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- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/02—Membranes; Filters
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- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/02—Membranes; Filters
- C12M25/04—Membranes; Filters in combination with well or multiwell plates, i.e. culture inserts
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- C12M1/00—Apparatus for enzymology or microbiology
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- C12M1/00—Apparatus for enzymology or microbiology
- C12M1/26—Inoculator or sampler
- C12M1/28—Inoculator or sampler being part of container
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- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/04—Flat or tray type, drawers
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- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/12—Well or multiwell plates
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- C12M23/00—Constructional details, e.g. recesses, hinges
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- C12M23/14—Bags
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- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/24—Gas permeable parts
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- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/26—Constructional details, e.g. recesses, hinges flexible
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- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/04—Filters; Permeable or porous membranes or plates, e.g. dialysis
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- 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
- C12M3/00—Tissue, human, animal or plant cell, or virus culture apparatus
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- 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
- C12M3/00—Tissue, human, animal or plant cell, or virus culture apparatus
- C12M3/06—Tissue, human, animal or plant cell, or virus culture apparatus with filtration, ultrafiltration, inverse osmosis or dialysis means
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- 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
- C12M3/00—Tissue, human, animal or plant cell, or virus culture apparatus
- C12M3/08—Apparatus for tissue disaggregation
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- 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
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/14—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus with filters, sieves or membranes
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
Definitions
- the present invention relates to a cell culture vessel used for cell culture in order to easily and efficiently perform various operations performed in cell culture, and a method for using the same.
- the present applicant has repeatedly studied a cell culture system capable of performing cell culture efficiently while constructing a closed system environment to reduce the risk of contamination.
- Patent Document 1 a culture container for culturing cells, a medium storage container for storing a medium and the like, a cell injection container for injecting cells, and a cell suspension after culture
- a cell culture kit is proposed in which a cell collection container to be collected is connected by a conduit to construct a closed system environment. According to such a cell culture kit, it is possible to carry out from cell injection to medium addition, sampling, and collection while maintaining a closed system in the kit.
- Patent Document 1 in recovering cultured cells, the culture vessel is allowed to stand to settle the cells in the cell suspension, and then the supernatant of the cell suspension is discharged, An example is shown in which the concentrated cell suspension is transferred from the culture vessel to the cell collection vessel after being reduced.
- cell culture usually takes a period of several days to several weeks, so that cell growth is not inhibited by the depletion of medium components or accumulation of cell metabolites,
- the medium may be changed as necessary.
- the cells in the cell suspension must be allowed to settle by allowing the culture vessel to stand before draining the cell suspension supernatant. It takes time to settle the cells.
- cells may be mixed into the supernatant by the discharge operation, and the cells may be discharged together with the supernatant.
- it is desirable to remove as much of the old medium as possible, and to add more new medium.
- cell contamination is avoided. It will not be possible.
- the flow path diameter of the port is usually about 1 to 10 mm, and the area of the filter is relatively small. Therefore, the trapped cells are likely to be clogged, and the old medium may be prevented from being discharged. is there. Furthermore, there is a possibility that the cells captured by the filter do not return to the culture container and die while being captured by the filter.
- the present invention has been made in view of the above circumstances. For example, when exchanging a medium, various operations performed in cell culture such as suppression of discharge of cells together with an old medium can be performed.
- the purpose of the present invention is to provide a cell culture container used for cell culture in order to carry out simply and efficiently, and a method for using the same.
- a cell culture container is a cell culture container used for cell culture, and includes a container main body and an injection port, and the inside of the container main body is constituted by at least one filter member.
- the configuration is divided into a plurality of tanks.
- FIG. 1 is explanatory drawing which shows an example of the container for cell cultures concerning this embodiment.
- a container 1 shown in FIG. 1 includes a container body 2 and injection ports 3a and 3b.
- the interior of the container body 2 is partitioned by a sheet-like filter member 4 into a first tank 1st on the top surface 2a side and a second tank 2nd on the bottom surface 2b side.
- the first tank 1st and the second tank 2nd on the bottom surface 2b side are respectively provided with injection ports 3a and 3b.
- the container body 2 is not limited in its specific form as long as it can accommodate a culture medium or a cell suspension obtained by suspending cells in a culture medium without hindrance to culture.
- it may be a container molded into a predetermined shape by injection molding, blow molding, or the like, or may be a pouch-shaped container in which two plastic films are stacked and the periphery is sealed.
- the injecting / extracting ports 3a and 3b are portions that serve as entrances and exits when injecting and discharging the medium and cells.
- the injecting ports 3a and 3b are provided by attaching a tubular member through which the medium or cells can flow to the container body 2. Can do.
- first tank 1st on the top surface 2a side and the second tank 2nd on the bottom surface 2b side have, for example, separate injection ports for sampling the culture medium and cells being cultured. You may make it prepare.
- Each tank defined by the filter member 4 may be provided with two or more injection ports as required.
- the container body 2 is made of a plastic film, the periphery is sealed, the top surface 2 a side has a bulging shape that bulges in a plateau shape, and the top surface 2 a is a flat surface. It is formed so that the edge is inclined and continues to the peripheral portion. Furthermore, the bottom surface 2b side also has a bulging shape that bulges in a plateau shape, and is formed so that the edge of the bottom surface 2b, which is a flat surface, is inclined and continues to the periphery.
- the container body 2 Since the container body 2 has such a bulging shape, it is possible to suppress deformation when injecting a culture medium or cells. That is, in a flat pouch-shaped container in which two plastic films are overlapped and the periphery is sealed, the bottom surface is deformed so that the periphery rises as the container is filled with the content liquid.
- the bulging shape of the container body 2 By designing the bulging shape of the container body 2 in consideration, it is possible to suppress the deformation of the container body 2 when injecting the culture medium or cells and to keep the bottom surface 2b of the container body 2 flat. It becomes. Therefore, in the container 1 shown in FIG. 1, the cells in the medium are uniformly settled on the bottom surface 2b of the container body 2 so that the density of the cells settled on the bottom surface 2b (the number of cells per unit area) is not biased. It is preferably used when it is required to do.
- the container 1 shown in FIG. 1 can be manufactured as follows, for example. First, two plastic films and a sheet-like filter member 4 are prepared, and these are cut as necessary to make the sizes uniform. Then, one plastic film is a top surface side plastic film that becomes the top surface 2a side of the container body 2, and the other plastic film is a bottom surface side plastic film that becomes the bottom surface 2b side of the container body 2, and these are vacuum formed and compressed air By molding or the like, it is molded so as to swell in a plateau shape, leaving its peripheral part.
- a sheet-like filter member 4 is inserted between the molded top surface side plastic film and bottom surface side plastic film, and these peripheral portions are overlapped.
- the tubular ports forming the injection ports 3a and 3b are formed between the top surface side plastic film and the filter member 4 and between the bottom surface side plastic film and the filter member 4, respectively, at predetermined positions on the periphery.
- the member is sandwiched, and in that state, the peripheral portion is sealed by thermal fusion, and the peripheral portion is trimmed as necessary. Thereby, the container 1 shown in FIG. 1 is manufactured.
- the plastic film forming the container body 2 is a gas whose oxygen permeability measured at a test temperature of 37 ° C. is 5000 mL / (m 2 ⁇ day ⁇ atm) or more in accordance with the gas permeability test method of JIS K 7126. It is preferable that it has permeability. 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.
- the material used for the plastic film forming the container body 2 is not particularly limited.
- examples thereof include thermoplastic resins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyester, polyamide, 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 preferably have a predetermined gas permeability. Furthermore, it is preferable to have a layer that functions as a sealant layer in consideration of heat-fusibility when sealing the peripheral portion.
- thermoplastic resins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyester, polyamide, silicone elastomer, polystyrene elastomer, and tetrafluoroethylene-hexafluoropropylene copolymer (FEP). These may
- the thickness of the plastic film used to form the container body 2 is 30 to 200 ⁇ m so that the container body 2 has an appropriate shape-retaining property while maintaining flexibility while maintaining the bulging shape of the container body 2 Is preferred.
- the tubular members forming the injection ports 3a and 3b are made of a predetermined material by injection molding, extrusion molding or the like using a thermoplastic resin such as polyethylene, polypropylene, vinyl chloride, polystyrene elastomer, FEP. It can be formed into a shape.
- a thermoplastic resin such as polyethylene, polypropylene, vinyl chloride, polystyrene elastomer, FEP. It can be formed into a shape.
- the filter member 4 is formed using a porous body having pores that allow at least the passage of the culture medium. However, it is not suitable that the cells cannot enter and exit the pores. From such a viewpoint, it is preferable to use a mesh sheet knitted with synthetic resin fibers made of a polyolefin such as polyolefin, polyester or nylon, or a fluorine resin such as polytetrafluoroethylene.
- the size of the pores of the filter member 4 can be appropriately selected depending on how the container 1 is used.
- the filter member 4 is preferably subjected to a hydrophilic treatment in order to enhance the permeability of the culture medium. By applying the hydrophilic treatment, it is possible to make the cells difficult to adhere.
- the filter member 4 should just be formed using the above-mentioned porous body at least partially. For example, when the container 1 is manufactured as described above, the filter member 4 is formed by holding the periphery of the porous body with a plastic film cut into a frame shape. It is also possible to achieve better thermal fusion with the plastic film.
- 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.
- FIG. 2 shows an example in which the container 1 shown in FIG. 1 is used for cell culture as a culture container capable of easily and efficiently performing operations such as medium exchange.
- the cells C to be cultured are injected into the container body 2 filled with the medium from the injection port 3b provided in the second tank 2nd on the bottom surface 2b side to perform culture.
- a filter member 4 having a pore that does not allow passage of the cell C is selected.
- the cells C in culture can remain in the second tank 2nd on the bottom surface 2b side and do not move to the first tank 1st on the top surface 2a side (see FIG. 2A). .
- the old medium is discharged from the injection port 3a provided in the first tank 1st on the top surface 2a side (see FIG. 2 (b)).
- the cells C being cultured can remain in the second tank 2nd on the bottom surface 2b side, it can be prevented from being discharged together with the old medium, and more old medium can be discharged. It becomes possible.
- a new medium of the same amount is injected from the injection port 3a provided in the first tank 1st on the top surface 2a side (see FIG. 2C), and the culture is continued.
- the medium exchange during the culture period in particular, the operation of discharging the old medium can be performed easily and efficiently.
- the container 1 in this use example is a state in which the cells C stay in the second tank 2nd on the bottom surface 2b side, and the infusion port 3a provided in the first tank 1st on the top surface 2a side
- the content liquid can be discharged.
- the cell recovery operation exemplified in Patent Document 1 is also performed simply and efficiently without taking time to settle the cells. be able to.
- it uses as a cell collection container of the cell culture kit of patent document 1, transfers the cell suspension collect
- Introducing a washing and recovering mechanism into the cell culture kit of Patent Document 1 by repeating the injection and discharge of the washing liquid from the injecting and discharging port 3a provided in the first tank 1st so that the cell washing operation is performed. Can do.
- the antibody-producing cell is cultured in the second tank 2nd on the bottom surface 2b side and the produced antibody is taken out from the injection port 3a provided in the first tank 1st on the top surface 2a side.
- a filter member 4 having a pore that does not allow passage of cells C to be cultured is selected, and the cells C are injected into one tank 2nd partitioned by the filter member 4.
- the medium, the medium C, the washing solution, or the like is injected from the injection port 3a provided in the other tank 1st partitioned by the filter member 4 while the cells C remain in the tank 2nd. Can do.
- FIG. 3 shows an example in which the container 1 shown in FIG. 1 is used for cell culture as an agglomerate dividing container that can easily and efficiently perform an operation of dividing the cell agglomerate Cagg into a desired size. Show.
- the aggregate Cagg is pumped together with the culture medium from the injection port 3a provided in the first tank 1st on the top surface 2a side into the container body 2 filled with the culture medium.
- a filter member 4 having a pore corresponding to the size of the aggregate Cagg to be divided is selected.
- the agglomerate Cagg is sent to the second tank 2nd on the bottom surface 2b side while being divided into sizes corresponding to the pores of the filter member 4.
- the agglomerate Cdiv divided into a desired size can be taken out from the injection port 3b provided in the second tank 2nd on the bottom surface 2b side.
- the filter member 4 having a pore corresponding to the size to be divided into cell aggregates Cagg is selected, and one tank 1st partitioned by the filter member 4 is selected.
- the operation of dividing the cell aggregate Cagg into a desired size can be performed easily and efficiently by pumping the aggregate Cagg together with the medium.
- the aggregate Cagg may be pumped together with the culture medium from the injection port 3b provided in the second tank 2nd on the bottom surface 2b side, if necessary.
- the interior of the container body 2 is divided into three or more tanks, and the size of the pores of the filter member 4 that partitions each tank is adjusted as appropriate, so that the aggregate Cagg is stepwise. It can also be divided. Furthermore, by providing each tank with an injection port, the agglomerates Cdiv divided into different sizes can be taken out.
- FIG. 4 shows two types of cells having different sizes mixed in the container 1 shown in FIG. 1, for example, a cell that can easily and efficiently perform an operation of separating a single cell Cs and its aggregate Cagg.
- the example which uses for the use of cell culture as a separation container is shown.
- cells in which two types of cells Cs and Cagg of different sizes are mixed from the injection port 3a provided in the first tank 1st on the top surface 2a side in the container body 2 filled with the culture medium.
- the suspension is injected (step 1).
- the container 1 is allowed to stand and vibration is applied as necessary.
- the filter member 4 is selected from two types of cells Cs and Cagg to be separated that have pores that allow passage of the smaller cell Cs but do not allow passage of the larger cell Cagg. .
- the smaller cell Cs passes through the pores of the filter member 4 and settles in the second tank 2nd on the bottom surface 2b side, and the larger cell Cagg becomes the first cell on the top surface 2a side. It can be made to stay in the tank 1st.
- the smaller cell Cs settled in the second tank 2nd on the bottom surface 2b side is separated from the larger cell Cagg and can be taken out from the injecting port 3b provided in the second tank 2nd on the bottom surface 2b side.
- the larger cell Cagg which is separated from the smaller cell Cs and stays in the first tank 1st on the top surface 2a side, is taken out from the injection port 3a provided in the first tank 1st on the top surface 2a side.
- the filter member 4 As described above, in the present usage example, as the filter member 4, a filter member having pores that allow passage of at least one cell among mixed cells but not allow passage of other cells is selected. By injecting mixed cells of different sizes into one tank 1st partitioned by the filter member 4, the cells passing through the filter member 4 are taken out from the other tank 2nd partitioned by the filter member 4. The operation of separating the mixed cells having different sizes can be performed easily and efficiently.
- the inside of the container body 2 is partitioned into three or more tanks, the size of the pores of the filter member 4 partitioning each tank is appropriately adjusted, and an injection port is provided in each tank. By providing, it is possible to separate three or more types of cells having different sizes.
- FIG. 5 shows the container 1 shown in FIG. 1 as a co-culture container that can easily and efficiently carry out the operation of separately taking out different types of cells Ca and Cb in the same container and then separately taking them out.
- An example for use in cell culture is shown.
- the cell Ca is injected into the container body 2 filled with the medium from the injection port 3a provided in the first tank 1st on the top surface 2a side, and the second tank 2nd on the bottom surface 2b side.
- the cell Cb is injected from the injection port 3b included in the cell, and the cells Ca and Cb are co-cultured.
- a filter member 4 having a pore that does not allow passage of any of the cells Ca and Cb to be co-cultured is selected.
- one cell Ca remains in the first tank 1st on the top surface 2a side, and the other cell Cb remains in the second tank 2nd on the bottom surface 2b side, so that both are the same without mixing.
- one cell Ca can be taken out from the injection port 3a provided in the first tank 1st on the top surface 2a side, and the other cell Cb is injected in the second tank 2nd on the bottom surface 2b side. It can be taken out from the outgoing port 3b.
- the filter member 4 one having pores that do not allow passage of any cells Ca and Cb to be co-cultured is selected, and each of the cells divided by the filter member 4 is selected.
- the cells Ca and Cb By separately injecting different types of cells Ca and Cb into the tanks 1st and 2nd for each type, the cells Ca and Cb can be co-cultured in the same container without being mixed. The operation of separately taking out can be performed easily and efficiently.
- three or more types of cells can be co-cultured by partitioning the inside of the container body 2 into three or more tanks and providing each tank with an injection port.
- FIG. 6 is explanatory drawing which shows an example of the container for cell cultures concerning this embodiment.
- a container 1 shown in FIG. 6 includes a container body 2 and an injection port 3a.
- the interior of the container body 2 is partitioned by a sheet-like filter member 4 into a first tank 1st on the top surface 2a side and a second tank 2nd on the bottom surface 2b side.
- the first tank 1st is provided with an injection port 3a.
- the container 1 shown in FIG. 6 is different from the container 1 shown in FIG. 1 as an example of the first embodiment in that the second tank 2nd on the bottom surface 2b side does not include the injection port 3b.
- Other configurations are common.
- Such a container 1 can be manufactured in the same manner as the container 1 shown in FIG. 1 of the first embodiment. In this case, the tubular member that forms the injection port 3b may be omitted.
- This embodiment is different from the first embodiment described above in that the second tank 2nd on the bottom surface 2b side does not include the injection port 3b, and other configurations are the same as those in the first embodiment described above. Since it is common with the form, the overlapping description is omitted. Needless to say, the specific form of the container body 2 is not limited as in the first embodiment.
- FIG. 7 shows the use of the cell culture as a culture vessel in which the container 1 shown in FIG. 6 can be easily and efficiently operated for exchanging the medium when culturing the cells Cs forming the aggregate Cagg. An example is given.
- the cell Cs forming the aggregate Cagg is targeted for culture, and the filter member 4 allows the passage of cells (single cell) Cs before forming the aggregate Cagg, but does not allow the passage of the aggregate Cagg. Select those that have unacceptable pores.
- the cells (single cells) Cs to be cultured are injected into the container body 2 filled with the medium from the injection port 3a provided in the first tank 1st on the top surface 2a side, the cells Cs are filtered. It passes through the member 4 and settles in the second tank 2nd on the bottom surface 2b side (see FIG. 7A). Then, as the culture proceeds, the cells Cs form an aggregate Cagg and cannot pass through the filter member 4, and thus the culture is performed in a state where the aggregate Cagg remains in the second tank 2nd on the bottom surface 2b side. It can be made to progress (refer FIG.7 (b)).
- the old medium is discharged from the injection port 3a provided in the first tank 1st on the top surface 2a side, and a new medium is injected (FIG. 7).
- the medium can be changed while the aggregate Cagg remains in the second tank 2nd on the bottom surface 2b side.
- the cleaning liquid is repeatedly injected and discharged from the injection port 3a provided in the first tank 1st on the top surface 2a side, thereby agglomerating in the second tank 2nd on the bottom surface 2b side.
- the agglomerate Cagg can be washed while the agglomerate Cagg remains.
- the filter member 4 when culturing the cells Cs that form the aggregate Cagg, the filter member 4 allows the passage of the cells Cs before forming the aggregate Cagg, but the aggregate Cagg. Is selected to have pores that do not allow passage, and the cells Cs are injected into the first tank 1st and then settled into the second tank 2nd, and the formed agglomerates Cagg are added to the second tank 2nd.
- operations such as medium exchange during the culture period and washing after completion of the culture can be performed easily and efficiently.
- the container 1 can also be utilized for storage and conveyance of the cultured cell (aggregate Cag Cagg).
- the second tank 2nd on the bottom surface 2b side includes the injection port 3b, as in the first embodiment described above, cells cultured from the injection port 3b ( Agglomerate Cagg) can also be removed.
- FIG. 8 is explanatory drawing which shows an example of the cell culture container which concerns on this embodiment.
- a container 1 shown in FIG. 8 includes a container body 2 and an injection port 3a.
- the interior of the container body 2 is partitioned by a sheet-like filter member 4 into a first tank 1st on the top surface 2a side and a second tank 2nd on the bottom surface 2b side.
- the first tank 1st is provided with an injection port 3a, and a plurality of recesses 5 are provided on the bottom surface 2b of the container body 2.
- the container 1 shown in FIG. 8 is different from the container 1 shown in FIG. 6 as an example of the second embodiment in that a plurality of recesses 5 are provided on the bottom surface 2b of the container main body 2.
- the configuration is the same.
- Such a container 1 can be manufactured in the same manner as the container 1 shown in FIG. 6 of the second embodiment, and when the bottom surface side plastic film is molded, the recess 5 Can be molded in a desired shape and arrangement.
- the recess 5 By providing the plurality of recesses 5 on the bottom surface 2b of the container body 2, cells that settle in the medium are collected at the bottom of each recess 5, and can be efficiently cultured in a state where the cell density is increased. .
- the recess 5 Has an opening diameter (diameter) of preferably 0.3 to 10 mm, more preferably 0.3 to 5 mm, still more preferably 0.5 to 4 mm, and particularly preferably 0.5 to 2 mm. Is preferably 0.1 mm or more.
- the concave portion 5 is formed in a bowl shape, but may be formed in a conical shape, a truncated cone shape, or the like as necessary.
- This embodiment is different from the above-described second embodiment in that a plurality of recesses 5 are provided on the bottom surface 2b of the container body 2, and other configurations are common to the above-described second embodiment.
- the overlapping description is omitted.
- the specific form of the container main body 2 is not limited like 1st and 2nd embodiment.
- FIG. 9 shows that the container 1 shown in FIG. 8 is cultured efficiently in a state where the cell density is increased in culturing the cells Cs that form the aggregate Cagg, and operations such as medium exchange are simple and As an example of a culture vessel that can be efficiently used, an example for cell culture is shown.
- the cell Cs forming the aggregate Cagg is targeted for culture, and the filter member 4 allows the passage of cells (single cell) Cs before forming the aggregate Cagg, but does not allow the passage of the aggregate Cagg. Select those that have unacceptable pores.
- the cells (single cells) Cs to be cultured are injected into the container body 2 filled with the medium from the injection port 3a provided in the first tank 1st on the top surface 2a side, the cells Cs are filtered. It passes through the member 4 and settles in the second tank 2nd on the bottom surface 2b side. The precipitated cells Cs are collected at the bottom of each recess 5 and can be efficiently cultured in a state where the cell density is increased. Then, as the culture proceeds, the cells Cs form an aggregate Cagg and cannot pass through the filter member 4, and thus the culture is performed in a state where the aggregate Cagg remains in the second tank 2nd on the bottom surface 2b side. Can be advanced.
- the old medium is discharged from the injection port 3a provided in the first tank 1st on the top surface 2a side, and a new medium is injected, whereby the bottom surface 2b.
- the culture medium can be exchanged while the aggregate Cagg remains in the second tank 2nd on the side.
- a filter member 4 is adhered to the periphery of the recess 5 of the bottom surface 2b (surface located between the adjacent recesses 5) to cover the opening of the recess 5
- the member 4 is preferably fixed in the container body 2.
- the cleaning liquid is repeatedly injected and discharged from the injection port 3a provided in the first tank 1st on the top surface 2a side, thereby agglomerating in the second tank 2nd on the bottom surface 2b side.
- the agglomerate Cagg can be washed while the agglomerate Cagg remains.
- the filter member 4 when culturing the cells Cs that form the aggregate Cagg, the filter member 4 allows the passage of the cells Cs before forming the aggregate Cagg, but the aggregate Cagg. Is selected to have a pore that does not allow passage, and the cells Cs are injected into the first tank 1st and then settled into the second tank 2nd, and the precipitated cells Cs are collected at the bottom of the recess 5.
- the filter member 4 While efficiently culturing in a state where the cell density is increased, by culturing in the state where the formed agglomerate Cagg stays in the second tank 2nd, medium exchange during the culture period, after the end of the culture Operations such as washing can be performed simply and efficiently.
- the container 1 can also be utilized for storage and conveyance of the cultured cell (aggregate Cag Cagg).
- the second tank 2nd on the bottom surface 2b side includes the injection port 3b, as in the first embodiment described above, cells cultured from the injection port 3b ( Agglomerate Cagg) can also be removed.
- FIG. 10 is explanatory drawing which shows an example of the container for cell cultures concerning this embodiment.
- a container 1 shown in FIG. 10 includes a container body 2 and injection ports 3a, 3b, and 3c. And the inside of the container main body 2 is the 2nd tank 2nd by the side of the 1st tank 1st by the side of the top
- first tank 1st on the top surface 2a side is provided with injection ports 3a (IN) and 3a (OUT) as inflow and outlet ports.
- second tank on the bottom surface 2b side is provided with the second tank 1st.
- the tank 2nd is provided with injection ports 3b (IN) and 3b (OUT) serving as inflow / outflow ports.
- the third tank 3rd is provided with an injection port 3c.
- the container 1 shown in FIG. 10 divides the inside of the container body 2 into three tanks, each tank is provided with an injection port, and two injections are made in the first tank 1st on the top surface 2a side.
- the outlet ports 3a (IN) and 3a (OUT) are provided, and the second tank 2nd on the bottom surface 2b side is provided with two injection ports 3b (IN) and 3b (OUT).
- a container 1 can be manufactured as follows, for example.
- one plastic film is a top surface side plastic film that becomes the top surface 2a side of the container body 2
- the other plastic film is a bottom surface side plastic film that becomes the bottom surface 2b side of the container body 2, and these are vacuum formed and compressed air
- it is molded so as to swell in a plateau shape, leaving its peripheral part.
- two sheet-like filter members 4 are inserted between the molded top surface side plastic film and bottom surface side plastic film, and these peripheral portions are overlapped. Then, a tubular member forming injection ports 3a (IN) and 3a (OUT) is sandwiched between the top surface side plastic film and the filter member 4 at a predetermined position in the periphery thereof, and the bottom surface side plastic Between the film and the filter member 4, a tubular member that forms the injection ports 3 b (IN) and 3 b (OUT) is sandwiched between the film and the filter member 4 at a predetermined position in the periphery thereof, and two sheet-like filter members 4 are inserted.
- pouring port 3c is pinched
- the container 1 shown in FIG. 10 is manufactured.
- This embodiment is different from the first embodiment described above in that the inside of the container body 2 is divided into three tanks, each tank is provided with an inlet port, and the first tank on the top surface 2a side. 1st includes two injection ports 3a (IN) and 3a (OUT), and the second tank 2nd on the bottom surface 2b side includes two injection ports 3b (IN) and 3b (OUT). Since other configurations are the same as those in the first embodiment described above, redundant description is omitted. In addition, it cannot be overemphasized that the specific form of the container main body 2 is not limited like 1st, 2nd, and 3rd embodiment.
- FIG. 11 shows cell culture as a culture container in which the container 1 shown in FIG. 10 can be easily and efficiently operated to reproduce an environment in which cells C to be cultured grow, proliferate, and differentiate in vivo. An example for use is shown.
- the cells C to be cultured are injected from the injection port 3c provided in the third tank 3rd, and the culture is performed.
- the first tank 1st on the top surface 2a side and the bottom surface 2b side are used.
- media having different component compositions are circulated. In more detail, it flowed in from each of the injection port 3a (IN) provided in the first tank 1st on the top surface 2a side and the injection port 3b (IN) provided in the second tank 2nd on the bottom surface 2b side.
- Medium having different component compositions is mixed in the third tank 3rd and flows out from the respective injection ports 3a (OUT) and 3b (OUT).
- a filter member 4 having a pore that does not allow passage of the cell C is selected.
- the medium circulated in each of the first tank 1st on the top surface 2a side and the second tank 2nd on the bottom surface 2b side is used for various extracellular substrates that control cell growth, proliferation, and differentiation, and for cells. Including various signal substances that give stimuli, etc.
- the component composition, flow rate / flow velocity are set so that the concentration gradient and direction of arrival are equivalent to the environment in the living body. Etc. are adjusted. Thereby, culture
- the filter member 4 having a pore that does not allow passage of cells C to be cultured is selected, and each of the first tank 1st and the second tank 2nd is selected.
- the cells C are injected into the third tank 3rd and cultured to reproduce the environment in which the cells C to be cultured grow, multiply and differentiate in vivo. The operation can be performed easily and efficiently.
- FIG. 12 is explanatory drawing which shows an example of the cell culture container which concerns on this embodiment.
- well plates have been widely used for cell culture. For example, when inducing differentiation from ES cells or iPS cells into neural stem cells, myocardium, pancreas, liver, cartilage, etc., cells are seeded in a well plate (for example, a 96-well plate), and aggregates in the well.
- a method is adopted in which differentiation induction is advanced to induce differentiation.
- This embodiment is intended to enable simple and efficient operations such as medium exchange when culturing cells using a container having a plurality of cell culture units such as a well plate. It is.
- a container 1 shown in FIG. 12 includes a container body 2 having a plurality of recesses 6 serving as a cell culture section, and the opening of each recess 6 is covered with a sheet-like filter member 4. It has been broken.
- the filter member 4 covering the opening of each recess 6 is attached to the container body 2 so as to be in close contact with the periphery of the recess 6 (the surface located between the openings of the adjacent recesses 6). Preferably, it adhere
- the container body 2 is not limited in its specific form as long as cells, culture media, and the like can be accommodated in the respective recesses 6 without any difficulty in culturing.
- the container body 2 is surrounded by the container body 2. It is preferable to provide a side wall portion 7 that rises.
- the filter member 4 is as described in the first embodiment.
- cells that form aggregates are to be cultured, and a filter member 4 having pores that do not allow passage of aggregates is selected.
- the cells to be cultured are injected together with the medium into each recess 6 serving as a cell culture portion, and the culture is started. As the culture progresses, the cells injected into the recess 6 form aggregates.
- the old medium When the culture progresses and it is time to replace the medium, the old medium is discharged from each recess 6. At this time, the filter members 4 covering the openings of the respective recesses 6 do not allow the passage of aggregates. Therefore, when exchanging the medium, only the old medium can be flowed out by simply tilting the container 1, and the pipette The old medium can be discharged from the respective recesses 6 without any operation.
- the container body 2 is provided with a side wall portion 7 that rises so as to surround the periphery of the container body 2, the new medium flows into the respective recesses 6 simply by pouring a new medium inside the side wall portion 7. Can be. By doing in this way, a new culture medium can be inject
- spheres formed in the process of cell culture, in particular, the passage of ES cells and iPS cells, and differentiation induction from these stem cells into neural stem cells, cardiac muscle, pancreas, liver, cartilage and the like.
- Various operations performed during culture can be performed simply and efficiently.
- various operations can be easily and efficiently performed for culturing antibody-producing cells such as lymphocytes and hybridomas, and floating cells such as megakaryocytes and erythrocytes.
- the present invention can be used as a technique for efficiently culturing cells in the fields of pharmaceutical science and biochemistry.
- container (cell culture container) 2 container main body 2a top surface 2b bottom surface 3a, 3b, 3c injection port 4 filter member 5 recessed portion 6 recessed portion 7 side wall portion 1st first tank 2nd second tank 3rd third tank
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Abstract
Description
しかしながら、ポートの流路径は、通常、1~10mm程度であり、フィルタの面積も比較的小さくなるため、捕捉された細胞によってフィルタに目詰まりが生じ易く、古い培地の排出を妨げてしまう虞がある。さらに、フィルタに捕捉された細胞が培養容器内に戻らずに、フィルタに捕捉されたまま死滅してしまう虞もある。
まず、本発明の第一実施形態について説明する。
なお、図1は、本実施形態に係る細胞培養用容器の一例を示す説明図である。
フィルタ部材4によって区画されたそれぞれの槽は、必要に応じて、二以上の注入出用ポートを備えることができる。
すなわち、二枚のプラスチックフィルムを重ねて周辺部をシールしただけの平パウチ状の容器では、容器内が内容液で満たされていくにつれて周辺部が持ち上がるように底面が変形するが、注入量を考慮して容器本体2の膨出形状を設計することで、培地や細胞を注入する際の容器本体2の変形を抑制して、容器本体2の底面2bを平坦面のままとすることが可能となる。
したがって、図1に示す容器1は、容器本体2の底面2bに培地中の細胞を均一に沈降させ、底面2bに沈降した細胞の密度(単位面積あたりの細胞数)に偏りが生じないようにすることが求められる場合に好適に用いられる。
まず、二枚のプラスチックフィルムとシート状のフィルタ部材4とを用意し、これらを必要に応じて裁断して、その大きさを揃える。そして、一方のプラスチックフィルムを容器本体2の天面2a側となる天面側プラスチックフィルムとし、他方のプラスチックフィルムを容器本体2の底面2b側となる底面側プラスチックフィルムとして、これらを真空成形、圧空成形などにより、その周辺部を残して台地状に膨出するように成形する。
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。
また、フィルタ部材4は、容器1の使用態様によって要求される機能が損なわれない限り、少なくとも一部が上記したような多孔質体を用いて形成されていればよい。例えば、前述したようにして容器1を製造するに際し、上記多孔質体の周囲を枠状に裁断されたプラスチックフィルムで保持するなどしてフィルタ部材4を形成することで、天面側及び底面側プラスチックフィルムとの熱融着がより良好になされるようにすることもできる。
図2は、図1に示す容器1を、培地交換などの操作を簡便、かつ、効率良く行うことができる培養容器として細胞培養の用途に供する例を示している。
図3は、図1に示す容器1を、細胞の凝集塊Caggを所望の大きさに分割する操作を簡便、かつ、効率良く行うことができる凝集塊分割容器として細胞培養の用途に供する例を示している。
所望の大きさに分割された凝集塊Cdivは、底面2b側の第二の槽2ndが備える注入出用ポート3bから取り出すことができる。
また、特に図示しないが、容器本体2の内部を三槽以上に区画しておき、各槽を区画するフィルタ部材4の細孔の大きさを適宜調整することで、凝集塊Caggを段階的に分割することもできる。さらに、各槽に注入出用ポートを備えるようにすることで、異なる大きさに分割された凝集塊Cdivを、それぞれ取り出すようにすることもできる。
図4は、図1に示す容器1を、混在する大きさの異なる二種類の細胞、例えば、シングルセルCsとその凝集塊Caggとを分離する操作を簡便、かつ、効率良く行うことができる細胞分離容器として細胞培養の用途に供する例を示している。
図5は、図1に示す容器1を、異なる種類の細胞Ca,Cbを同一容器内で共培養した後に、これらを別々に取り出す操作を簡便、かつ、効率良く行うことができる共培養容器として細胞培養の用途に供する例を示している。
次に、本発明の第二実施形態について説明する。
なお、図6は、本実施形態に係る細胞培養用容器の一例を示す説明図である。
なお、第一実施形態と同様に、容器本体2の具体的な形態が限定されないことはいいうまでもない。
図7は、図6に示す容器1を、凝集塊Caggを形成する細胞Csを培養するにあたり、その培地交換などの操作を簡便、かつ、効率良く行うことができる培養容器として細胞培養の用途に供する例を示している。
なお、特に図示しないが、前述した第一実施形態と同様に、底面2b側の第二の槽2ndが注入出用ポート3bを備えるようにすれば、注入出用ポート3bから培養された細胞(凝集塊Cagg)を取り出すこともできる。
次に、本発明の第三実施形態について説明する。
なお、図8は、本実施形態に係る細胞培養用容器の一例を示す説明図である。
また、図示する例では、凹部5を椀状に形成しているが、必要に応じて、円錐状、円錐台状などに形成することもできる。
なお、第一及び第二実施形態と同様に、容器本体2の具体的な形態が限定されないことはいいうまでもない。
図9は、図8に示す容器1を、凝集塊Caggを形成する細胞Csを培養するにあたり、細胞密度が高められた状態で効率良く培養するとともに、その培地交換などの操作を簡便、かつ、効率良く行うことができる培養容器として細胞培養の用途に供する例を示している。
なお、特に図示しないが、前述した第一実施形態と同様に、底面2b側の第二の槽2ndが注入出用ポート3bを備えるようにすれば、注入出用ポート3bから培養された細胞(凝集塊Cagg)を取り出すこともできる。
次に、本発明の第四実施形態について説明する。
なお、図10は、本実施形態に係る細胞培養用容器の一例を示す説明図である。
なお、第一、第二、及び第三実施形態と同様に、容器本体2の具体的な形態が限定されないことはいうまでもない。
図11は、図10に示す容器1を、培養対象の細胞Cが、生体内で成長、増殖、分化する環境を再現する操作を簡便、かつ、効率良く行うことができる培養容器として細胞培養の用途に供する例を示している。
次に、本発明の第五実施形態について説明する。
なお、図12は、本実施形態に係る細胞培養用容器の一例を示す説明図である。
なお、培養終了後には、培地交換を行うのと同様にして、それぞれの凹部6に洗浄液を注入、排出させることで、凝集塊を洗浄することもできる。
2 容器本体
2a 天面
2b 底面
3a,3b,3c 注入出用ポート
4 フィルタ部材
5 凹部
6 凹部
7 側壁部
1st 第一の槽
2nd 第二の槽
3rd 第三の槽
Claims (14)
- 細胞培養の用途に供される細胞培養用容器であって、
容器本体と注入出用ポートとを備え、
前記容器本体の内部が、少なくとも一つのフィルタ部材によって複数の槽に区画されていることを特徴とする細胞培養用容器。 - 前記容器本体の内部が、前記容器本体の天面側の第一の槽と、前記容器本体の底面側の第二の槽とに区画され、
前記天面側の第一の槽と前記底面側の第二の槽の少なくとも一方に、前記注入出用ポートを少なくとも一つ備える請求項1に記載の細胞培養用容器。 - 前記容器本体の底面に、複数の凹部が設けられた請求項1又は2に記載の細胞培養用容器。
- 前記容器本体の内部が、前記容器本体の天面側の第一の槽と、前記容器本体の底面側の第二の槽と、前記天面側の第一の槽と前記底面側の第二の槽との間に位置する第三の槽とに区画され、
前記天面側の第一の槽と前記底面側の第二の槽に、前記注入出用ポートを少なくとも二つ備え、
前記第三の槽に、記注入出用ポートを少なくとも一つ備える請求項1に記載の細胞培養用容器。 - 細胞培養の用途に供される細胞培養用容器であって、
細胞培養部となる複数の凹部を有する容器本体を備え、前記凹部のそれぞれの開口部がフィルタ部材によって覆われていることを特徴とする細胞培養用容器。 - 前記容器本体に、前記容器本体の周りを取り囲んで立ち上る側壁部が設けられている請求項5に記載の細胞培養用容器。
- 前記フィルタ部材が、合成樹脂繊維を編んだメッシュシートである請求項1~6のいずれか一項に記載の細胞培養用容器。
- 請求項1~3のいずれか一項に記載の細胞培養用容器を用いて培地交換しながら細胞を培養する当該容器の使用方法であって、
前記フィルタ部材として、培養対象の細胞の通過を許容しない細孔を有するフィルタ部材を選択し、
前記フィルタ部材によって区画された一方の槽に、前記細胞を注入して培養を行い、
前記フィルタ部材によって区画された他方の槽が備える前記注入出用ポートから、培地を注入出して培地交換を行うことを特徴とする細胞培養用容器の使用方法。 - 請求項1~3のいずれか一項に記載の細胞培養用容器を用いて細胞の洗浄を行う当該容器の使用方法であって、
前記フィルタ部材として、培養対象の細胞の通過を許容しない細孔を有するフィルタ部材を選択し、
前記フィルタ部材によって区画された一方の槽に、前記細胞を注入して培養を行い、
前記フィルタ部材によって区画された他方の槽が備える前記注入出用ポートから、洗浄液を注入出して培養された細胞の洗浄を行うことを特徴とする細胞培養用容器の使用方法。 - 請求項1又は2に記載の細胞培養用容器を用いて細胞の凝集塊を分割する当該容器の使用方法であって、
前記フィルタ部材として、細胞の凝集塊を分割したい大きさに応じた細孔を有するフィルタ部材を選択し、
前記フィルタ部材によって区画された一方の槽に、前記凝集塊を培地とともに圧送して前記凝集塊を分割することを特徴とする細胞培養用容器の使用方法。 - 請求項1又は2に記載の細胞培養用容器を用いて混在する大きさの異なる細胞を分離する当該容器の使用方法であって、
前記フィルタ部材として、混在する細胞のうち少なくとも一の細胞の通過を許容するが、それ以外の細胞の通過を許容しない細孔を有するフィルタ部材を選択し、
前記フィルタ部材によって区画された一方の槽に、混在する大きさの異なる細胞を注入して、
前記フィルタ部材によって区画された他方の槽から、前記フィルタ部材を通過した細胞を取り出すことを特徴とする細胞培養用容器の使用方法。 - 請求項1又は2に記載の細胞培養用容器を用いて異なる種類の細胞を共培養する当該容器の使用方法であって、
前記フィルタ部材として、共培養されるいずれの細胞も通過を許容しない細孔を有するフィルタ部材を選択し、
前記フィルタ部材によって区画されたそれぞれの槽に、前記細胞を種類ごとに別々に注入して共培養することを特徴とする細胞培養用容器の使用方法。 - 請求項2又は3に記載の細胞培養用容器を用いて凝集塊を形成する細胞を培養する当該容器の使用方法であって、
前記フィルタ部材として、凝集塊を形成する前の細胞の通過は許容するが、凝集塊の通過は許容しない細孔を有するフィルタ部材を選択し、
前記細胞を、前記第一の槽に注入し、次いで、前記第二の槽に沈降させて、形成された凝集塊を前記第二の槽に留まらせた状態で培養することを特徴とする細胞培養用容器の使用方法。 - 請求項4に記載の細胞培養用容器を用いて細胞を培養する当該容器の使用方法であって、
前記フィルタ部材として、培養対象の細胞の通過を許容しない細孔を有するフィルタ部材を選択し、
前記第一の槽と前記第二の槽とのそれぞれに、成分組成の異なる培地を流通させながら、前記第三の槽に前記細胞を注入して培養を行うことを特徴とする細胞培養用容器の使用方法。
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