WO2015190090A1 - 接着系細胞用の閉鎖系培養容器 - Google Patents
接着系細胞用の閉鎖系培養容器 Download PDFInfo
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- WO2015190090A1 WO2015190090A1 PCT/JP2015/002888 JP2015002888W WO2015190090A1 WO 2015190090 A1 WO2015190090 A1 WO 2015190090A1 JP 2015002888 W JP2015002888 W JP 2015002888W WO 2015190090 A1 WO2015190090 A1 WO 2015190090A1
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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
- C12M37/00—Means for sterilizing, maintaining sterile conditions or avoiding chemical or biological contamination
- C12M37/02—Filters
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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
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/14—Bags
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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
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/24—Gas permeable parts
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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
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/48—Holding appliances; Racks; Supports
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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
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/20—Degassing; Venting; Bubble traps
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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
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
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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
- C12M37/00—Means for sterilizing, maintaining sterile conditions or avoiding chemical or biological contamination
- C12M37/04—Seals
Definitions
- the present invention relates to a culture container capable of aseptic cell culture, aseptic transport to a place where cells are used (for example, an operating room or a culture room), and simple removal of cells.
- the Cell Processing Center (CPC), a facility that maintains a high degree of cleanliness for the entire laboratory to perform culture operations, has been established and an environment with reduced risk of contamination has been realized.
- the cost is very expensive. Therefore, in order to reduce the cost, development of an isolator capable of performing a culture operation in a closed culture environment has been promoted. However, the maintenance of the isolator is cheaper than CPC, but it is still expensive at 10 million yen. Even systems that are cheaper by dealing with only specific cell types are still expensive.
- Patent Document 1 discloses a closed culture vessel for preventing deterioration of a culture medium.
- This culture vessel is a vessel for culturing floating cells, and a vessel capable of increasing the culture volume with the culture time is disclosed.
- the container of Patent Document 1 is a container for culturing floating cells, and does not consider culturing adhesive cells.
- Patent Document 2 discloses an aircraft.
- a transport container capable of transporting is disclosed.
- these require the tissue for transplantation cultured in CPC or the like to be tightly sealed in CPC, which requires expensive aseptic facilities and equipment.
- the present invention is an extremely inexpensive culture container that can be applied to various cells, and does not require expensive aseptic facilities and equipment. Therefore, it is possible to avoid major changes in manufacturing protocols and new applications due to facility and equipment changes.
- the present invention provides a culture container capable of aseptic cell culture, aseptic transport to a place where cells are used (for example, an operating room), and simple removal of cells.
- the present invention provides the following inventions.
- a closed culture vessel for adherent cells An openable sealed container;
- the cell culture body is a closed culture container provided to be removable from the sealed container.
- the gas exchange means capable of aseptically exchanging gas is a filter capable of gas exchange between the inside and the outside of the sealed container.
- the sealed container is a gas permeable cell culture bag.
- a culture vessel according to claim 1. The closed container includes a cell introduction port capable of aseptically introducing a substrate having adherent cells attached to the cell adhesion surface, and the cell introduction port can be sealed after cell introduction.
- the culture container according to any one of (1) to (10) above, wherein the substrate has a handle on the edge or side wall of the substrate.
- the cell culture body has a bottom surface having a cell culture surface and a side surface extending upward from the periphery of the bottom surface, and the side surface is removable from the cell culture surface of the substrate.
- the culture container in any one.
- a set of an airtight container that can be sealed and opened and a cell culture body having a cell culture surface (15) The set according to (14) above, wherein the sealed container has a holding projection for holding the cell culture body from the outside. (16) The set according to (14) or (15), further comprising a saucer for receiving the medium inside the sealed container.
- a closed cell culture system The culture vessel according to any one of (1) to (13) above, Medium supply means for supplying the culture medium to the culture container; A closed cell culture system comprising a medium discharge means for discharging a medium from a culture container.
- culture can be performed in a sterile closed environment during culture, and after completion of the culture, the cells can be aseptically transported to the site where the cells are used.
- the cell culture can be easily taken out of the container, and the taken-out culture can be used immediately. That is, according to the present invention, expensive aseptic facilities and equipment are not required, and a sterile closed environment can be maintained not only during culture but also during culture transport. It is extremely advantageous in that the possibility of contamination to the culture can be brought to zero as much as possible with a simple and inexpensive method. I can say that.
- various open cell culture containers or substrates can be used as the cell culture body. That is, according to the present invention, it is possible to easily and inexpensively produce a wide variety of closed culture vessels.
- FIG. 1 is a diagram showing a closed culture vessel 100 of the first embodiment.
- FIG. 2 is a plan view of the closed culture vessel 100 of the first embodiment.
- 3 is a cross-sectional view taken along line AA in FIG.
- FIG. 4 is a plan view of the cell culture body 10.
- FIG. 5 is a cross-sectional view of the cell culture body 10.
- FIG. 6 is a diagram showing a closed culture vessel 110 according to the second embodiment.
- FIG. 7 is a plan view of the closed culture vessel 110 of the second embodiment.
- 8 is a cross-sectional view taken along line AA in FIG.
- FIG. 9 is a plan view of the substrate 30.
- FIG. 10 is a cross-sectional view of the substrate 30.
- FIG. 11 is a diagram illustrating a closed culture vessel 120 according to the third embodiment.
- FIG. 12 is a plan view of the closed culture vessel 120 of the third embodiment.
- 13 is a cross-sectional view taken along line AA in FIG.
- FIG. 14 is a view showing the closed-system culture container 100 of the first embodiment further provided with a saucer.
- FIG. 15 is a plan view of the closed culture vessel 100 of the first embodiment further provided with a saucer.
- FIG. 16 is a cross-sectional view taken along the line AA in FIG.
- FIG. 17 is a diagram showing a closed culture system 200 according to the first embodiment.
- FIG. 18 is a diagram illustrating the substrate 30 including the handle 31.
- FIG. 19 is a cross-sectional view taken along line AA in FIG.
- FIG. 20 is a photograph of the closed culture vessel prepared in Example 1.
- FIG. 21 is a photograph of a closed culture container during cell culture in Example 2.
- FIG. 22 shows corneal epithelial tissue obtained by culturing in Example 2.
- FIG. 23 is a stained image of the cell adh
- the cells are not limited, but, for example, corneal epithelial cells, corneal epithelial stem cells, corneal endothelial cells, corneal endothelial stem cells, oral mucosal epithelial cells, oral mucosal epithelial stem cells, conjunctival epithelial cells, conjunctival epithelial stem cells, skin epithelium Cells or skin epithelial stem cells.
- the closed-system culture container 100 in this embodiment includes an openable sealed container 20, and a cell culture body 10 that is disposed in the sealed container and has a cell culture surface. It has.
- the cell culture body 10 comprised separately from the sealed container 20 is arrange
- the sealed container 20 includes a space in which a culture chamber is formed, a culture solution introduction port 21 for introducing the culture solution into the sealed vessel 20, and a culture solution discharge port 22 for discharging the culture solution from the sealed container 20. And are provided.
- the inside of the sealed container 20 is maintained aseptically, and the culture solution is aseptically introduced into the space in the sealed container 20 from the introduction port 21.
- the culture solution is discharged out of the sealed container 20 from the discharge port 22.
- the culture solution introduction port 21 and the culture solution discharge port 22 are provided with an open / close valve 21a and an open / close valve 22a, respectively, and the culture solution introduction port 21 and the culture solution discharge port 22 are closed.
- the open / close valve provided at the culture medium inlet 21 is preferably a valve capable of adjusting the introduction speed of the culture liquid.
- the valve is not necessarily provided in the culture vessel 100, and may be provided in a tube that supplies or discharges the medium connected to the culture medium inlet 21 or the culture medium outlet 22. As an example of the valve provided in the tube, there is a clamp used for an infusion tube.
- the culture medium inlet 21 and the culture medium outlet 22 can be sealed with a stopper such as a rubber stopper, respectively.
- the inner surface of the sealed container 20 is not particularly limited, but is non-cell-adhesive, and preferably neither the surface treatment of the adhesive surface nor the cell-adhesive coating is performed.
- the inner surface of the sealed container 20 is preferably provided with a cell non-adhesive coating.
- the airtight container 20 is not particularly limited, but is preferably a container capable of aseptic gas exchange between the inside and the outside, and includes a gas exchange means 24 capable of aseptic gas exchange, for example, a vent cap. Yes.
- a vent cap capable of aseptic gas exchange a vent cap for gas exchange through a hydrophobic membrane is commercially available and can be used as the gas exchange means 24 of the sealed container 20 of the present invention.
- the hydrophobic membrane may have pores with a pore size of 1 ⁇ m or less or 0.5 ⁇ m or less, for example. Since gas exchange is possible between the inside and outside of the hermetic container 20, the concentration of gases such as oxygen and carbon dioxide in the culture medium can be easily maintained.
- the sealed container 20 is not particularly limited, but is preferably a sterile gas exchangeable container between the inside and the outside. In a specific aspect, at least a part of the container wall is sterile inside and outside the container.
- the sealed container 20 is a gas permeable cell culture bag.
- the gas permeable cell culture bag is commercially available and can be preferably used as the sealed container 20.
- the gas permeable cell culture bag is advantageous in that the bag can be easily opened with, for example, a blade.
- the gas permeable cell culture bag is also advantageous in that it can be sealed by introducing a cell culture body 10 with cells adhered to the cell culture surface and then sealing with a commercially available sealer.
- the gas permeable cell culture bag is filled with a medium and, if necessary, a gas, so that a space is formed in the inside, so that the cell culture surface and attached cells can be protected from physical damage. it can.
- the gas permeable cell culture bag maintains the gas concentration of the internal medium at a concentration suitable for cell culture.
- the sealed container 20 is an openable sealed container.
- the sealed container 20 can be opened after completion of the culture, and the cell culture body 10 can be detached from the sealed container 20 after opening.
- the sealed container 20 may be provided with a lid (not shown) having a shape from which the cell culture body 10 can be taken out. Further, the cell culture body 10 may be taken out from the sealed container 20 through the cell inlet 23 described below.
- the sealed container 20 may be provided with a region that can be cut with a knife such as scissors or a scalpel, or the entire sealed container 20 may be made of a material that can be cut with a blade, or the sealed container 20. A part of the film may be heat-sealed so as to be peeled off by a film, whereby the cell culture body 10 can be taken out of the sealed container 20.
- the sealed container 20 can be provided in a state in which the cell culture body 10 is disposed in advance. By doing in this way, it becomes easy to maintain the inside of the airtight container 20 in an aseptic environment.
- the sealed container 20 may be a container that can introduce the cell culture body 10 in which cells adhere to the cell culture surface 10a and can be sealed after the introduction. By doing in this way, it becomes unnecessary to seed
- the sealed container 20 may also be provided in a state in which the cell culture body 10 is arranged in advance, but the cell culture body 10 can be taken out from the inside and the cells are seeded on the cell adhesion surface 10a. It is good also as a container which can be sealed again in the airtight container 20 for the cell culture body 10 which carried out. By doing in this way, the cell culture body 10 can be provided in the state maintained aseptically by the airtight container 20 at the time of sale.
- the sealed container 20 may further include a cell inlet 23 that can supply cells therein and can be sealed. Sealing may be performed by a rubber stopper or by means such as sealing.
- the cells are stored in the sealed container 20 without removing the rubber plug using a syringe equipped with an injection needle that penetrates the rubber plug through the cell introduction port.
- the hole formed in the rubber stopper can be sealed with a resin or the like with an injection needle, and the aseptic condition in the sealed container can be maintained.
- the cell inlet 23 may be large enough to take the cell culture body 10 out of the sealed container and introduce it into the inside.
- the cell culture body 10 has a bottom surface 10a having a cell culture surface and a side surface 10b extending upward from the periphery of the bottom surface.
- the bottom surface 10a having the cell culture surface is subjected to a surface treatment of an adhesive surface capable of adhering adhesive cells.
- the side surface 10b of the cell culture body 10 is preferably neither subjected to a surface treatment of the adhesive surface nor a cell adhesive coating.
- the side surface 10b extending upward from the peripheral edge of the bottom surface of the cell culture body 10 is preferably provided with a non-cell-adhesive coating.
- the surface treatment of the adhesive surface can be performed using a technique well known in the art such as plasma treatment.
- the sealed container 20 is provided with a plurality of culture solution inlets 21.
- a tank into which a fresh culture solution is introduced can be connected to the culture solution introduction port 21.
- the first tank can be connected to the first inlet 21 and the fresh medium inside can be introduced into the sealed container 20.
- the second tank is connected to the second inlet 21 to put the fresh culture medium inside the sealed container 20.
- the culture medium inlet 21 to which the first tank is connected may be closed when the first tank is no longer needed.
- the culture medium inlet 21 can be closed by a valve or a clamp.
- the culture medium introduction port 21 may also have a portion made of a sealable film material, and the portion may be closed by a sealer.
- the volume of the culture solution by increasing the volume of the sealed container 20, thereby reducing the change in the composition of the medium and reducing the frequency of replacement. It becomes. Further, when the volume of the sealed container 20 is increased, there is an advantage that a stable culture environment can be provided even for cells having a high rate of deterioration of the culture medium.
- the volume of the airtight container 20 is 2 times or more, 3 times or more, 4 times or more, 5 times or more, or 10 times or more of the volume of the cell culture body 10.
- the planar shape of the cell culture body 10 is not particularly limited, but is preferably a circle, an ellipse, a quadrangle, or a regular polygon, for example, a square or a regular hexagon.
- the cell culture body 10 is detachably installed from the sealed container 20. That is, the cell culture body 10 is configured separately from the sealed container 20. As a result, the cell culture body 10 and the cells adhered to the cell culture surface 10a can be taken out from the sealed container 20, and the subsequent operation, for example, peeling the cell from the cell culture body 10 is possible. Moreover, it becomes easy to process the peripheral part of a cell appropriately. In a certain aspect, the cell culture body 10 is simply mounted in the airtight container 20, and it is easy to remove the cell culture body 10 from the airtight container 20.
- the cell culture body 10 is detachably disposed in the sealed container 20. That is, in this aspect, the cell culture body 10 can be introduced into the sealed container 20 and can be removed.
- the cell culture body 10 in which cells are seeded on the cell adhesion surface 10a can be aseptically introduced into the sealed container 20 and sealed, and then the cells can be cultured.
- the cell culture body 10 can be taken out from the sealed container 20 and introduced into the sealed container 20 through the cell inlet 23.
- the cell culture body 10 is detachably disposed on the bottom surface of the sealed container 20. Thereby, the cell culture body 10 can be taken out from the airtight container 20, and handling of the cell adhering to the cell culture body 10 becomes easy. Further, by using the cell culture body 10 having a cell culture surface suitable for the cells to be cultured, various cells can be cultured using the same sealed container 20. Furthermore, a wide variety of open culture containers can be introduced into the sealed container 20 as the cell culture body 10. For example, the cell culture body 10 is a dish for cell culture in a preferable aspect. Accordingly, there is an advantage that a variety of culture containers can be manufactured at low cost without the need to prepare a new mold for each closed culture container.
- various open culture containers (which may be commercially available) are sealed in a sealed container 20 and sterilized to make various open culture containers inexpensively and easily closed. It is possible to remake it. Therefore, in the present invention, there is provided a method for producing a closed culture container, which comprises detachably disposing an open culture container in a sealed container and then sealing the sealed container.
- the cell culture body 10 preferably has a handle on the side surface. By grasping the handle, the cell culture body 10 can be easily taken out from the sealed container.
- the handle is preferably not subjected to a surface treatment of the adhesive surface or a cell adhesive coating, more preferably a cell non-adhesive coating.
- the cell culture body 10 has a bottom surface 10a having a cell culture surface made of a membrane.
- a membrane is Trans Well (trademark) (manufactured by Corning).
- the closed-system culture container in this embodiment may further include a medium tray 40 in the sealed container 20, as shown in FIGS.
- the receiving tray 40 may be comprised integrally with the airtight container 20, and may be comprised as a different body.
- the saucer 40 is a saucer for a medium overflowing from the sealed container when the sealed container 20 is opened, and is advantageous in that it prevents contamination of the surrounding area with the medium overflowing from the sealed container.
- the saucer 40 can also be advantageously used in aligning closed culture vessels in an incubator utilizing the edge shape of the saucer 40.
- the closed-system culture system 20 in the present embodiment includes a closed-system culture container 100 of the present invention, a medium supply means 50 for supplying a medium into the closed-system culture container, and a closed-system culture container.
- the medium supply means 50 is connected to the culture medium inlet 21 of the closed culture vessel 100 of the present invention.
- the medium supply means 50 can send a medium necessary for cell culture to the closed culture vessel 100 of the present invention.
- the culture medium supply means 50 may include a liquid supply means (not shown) for supplying the culture medium.
- An example of the liquid feeding means is a liquid feeding pump.
- the culture medium supply means 50 may be arranged at a higher position than the closed system culture container 100 and the culture medium discharge means 51, and supply the culture medium to the closed system culture container 100 by gravity.
- the culture medium supply unit 50 preferably includes an adjustment mechanism 50 a that adjusts the feeding speed of the culture solution in a flow path that connects the sealed container 20 and the culture medium supply unit 50.
- the adjustment mechanism 50a is, for example, a valve that can adjust the flow rate and stop the flow.
- the medium discharge means 51 is connected to the culture medium discharge port 22 of the closed culture vessel 100 of the present invention.
- the medium discharge means 51 includes a closing mechanism 51a that can stop the discharge of the culture solution.
- the closing mechanism 51a is, for example, a valve that can stop the flow.
- the closed culture container in the present embodiment is a container that can be sealed after introducing the cell culture body 10 with the cells adhered to the cell culture surface, first, the cells are placed on the cell culture surface 10a of the cell culture body 10. Seeding and allowing the cells to adhere to the cell culture surface 10a. Thereafter, the cell culture body 10 is introduced into the opened sealed container 10. After the cell culture body 10 is introduced, the sealed container 10 is sealed.
- the culture medium supply means 50 is aseptically connected to the culture medium introduction port 21 of the sealed hermetic container 10 and the culture medium discharge means 51 is aseptically connected to the culture liquid outlet 22 of the hermetic container, a closed culture system 200 is obtained. be able to.
- it does not specifically limit in the airtight container 20 as long as the cell culture surface 10a is covered with a culture medium, Preferably, it can be filled until the culture medium is completely filled or the cell culture body 10 is completely submerged.
- the closed-system culture container 100 when the cell culture body 10 is disposed in advance, first, a cell suspension is introduced into the sealed container 20 and then the culture of the sealed container 10 is performed.
- the culture medium supply means 50 is aseptically connected to the liquid introduction port 21 and the culture medium discharge means 51 is aseptically connected to the culture solution discharge port 22 of the sealed container, the closed culture system 200 can be obtained.
- it does not specifically limit in the airtight container 20 as long as the cell culture surface 10a is covered with a culture medium, Preferably, it can be filled until the culture medium is completely filled or the cell culture body 10 is completely submerged.
- the cell culture body 10 when the cell culture body 10 is disposed in advance, the cell culture body 10 is first removed from the sealed container 20 and the cells are cultured on the cell culture surface in the same manner as described above.
- the airtight container 20 may be sealed by adhering to 10a and aseptically introducing the airtight container 20 into the airtight container 20.
- the culture medium supply means 50 is aseptically connected to the culture medium introduction port 21 of the sealed container 10 via the connection means 50a, and the culture medium discharge means 51 is aseptically connected to the culture medium discharge port 22 of the closed container via the connection means 51a. By connecting, the closed culture system 200 can be obtained.
- the closed culture system 200 in which cells are attached to the cell culture surface 10a can be introduced and incubated in a CO 2 incubator for cell culture.
- the medium can be supplied from the medium supply means 50 into the sealed container 20 at a constant speed from the viewpoint of keeping the medium in the sealed container 20 constant.
- the medium supply can be performed by the medium discharge means 51 while discharging the medium.
- the open / close valves 21 a and 22 a are closed, and the closed culture vessel 100 is removed from the closed culture system 200.
- the inside of the closed culture vessel 100 is maintained aseptically by the closed on-off valves 21a and 22a. Therefore, the closed culture container 100 removed from the closed culture system 200 can be taken out of the culture room to another place (for example, an operating room) while maintaining the inside aseptic environment.
- the closed container of the closed culture container 100 can be opened, and the cultured fresh cells (or cell sheets) can be taken out from the sealed container 20 together with the cell culture body 10.
- the cells can be easily detached from the cell culture body 10 taken out from the sealed container, and the transplantation of the cells into the patient becomes easy.
- the cell culture body 10 can be cultured in a state in which the cell culture body 10 is aseptically sealed in the sealed container 20, and the cell culture body 10 is aseptically sealed in the sealed container 20 after the culture is completed. It can be carried around.
- the sealed container 20 is used as an outer wall of a closed culture container, and the cell culture body 10 is protected from physical impact during transportation and contamination of bacteria while maintaining the sterility of the cell culture body 10. The technical idea of using as a means is provided. Further, when the cell culture body 10 has a defect such as a minute pinhole, the defect can be easily detected from the leakage of the medium or the change in the internal pressure.
- the sealed container 20 can be opened, it is easy to remove cells and cell culture bodies from the sealed container 20. Further, since the cell culture body 10 can be taken out from the sealed container, operations such as detachment of the cells from the cell culture body 10 and shape processing of the cell sheet on the cell culture body 10 can be easily performed. Further, the closed culture container 100 of the present invention may be used for washing, differentiating, or stimulating cells adhered to the cell culture body 10, and is advantageous in that these can be performed aseptically. is there.
- FIGS. 6 to 8 The closed-system culture container of the second embodiment shown in FIGS. 6 to 8 is only different in the form of the cell culture body 10, and the other configuration is the closed-system culture of the first embodiment shown in FIGS. Similar to the container 100. 6 to 8, the same parts as those in the closed culture vessel of the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof is omitted.
- the cell culture body 10 is a substrate 30 having a cell culture surface 30a.
- the cell culture surface 30a of the substrate 30 is preferably subjected to a surface treatment of an adhesive surface capable of adhering adhesive cells.
- the planar shape of the substrate 30 is not particularly limited, but preferably has a shape such as a circle, an ellipse, or a square, for example, a square, a regular hexagon, or a regular polygon.
- the substrate 30 is a biological membrane in a certain aspect.
- the biological membrane used as the substrate 30 include a collagen film and an amniotic membrane.
- the cell culture body 10 is the substrate 30 from the viewpoint of reducing cell waste and controlling the cell culture conditions to be constant. Is preferred. In addition, this eliminates the need to separately control the cell adhesion between the bottom surface and the side wall, and also provides the advantage that the processing cost of the cell culture is greatly reduced.
- the cell culture body 10 preferably has a handle 31 on a side surface. By grasping the handle 31, the cell culture body 10 can be easily taken out from the sealed container 20.
- the handle 31 can be, for example, a protrusion extending upward from a part of the periphery of the substrate 30.
- the handle 31 is preferably not subjected to a surface treatment of the adhesive surface or a cell adhesive coating, and more preferably a cell non-adhesive coating.
- FIGS. 11 to 13 The closed-type culture container of the third embodiment shown in FIGS. 11 to 13 is different only in the form of the sealed container 20, and the other configurations are the closed-type culture container 110 of the second form shown in FIGS. It is the same. 11 to 13, the same parts as those in the closed type culture container of the second embodiment shown in FIGS.
- the sealed container 20 has a holding protrusion 25 that holds the substrate 30 from the outside.
- the holding protrusion 25 can hold the substrate 30 from the outside and hold the position of the substrate 30 at a fixed position.
- concentration of the medium may be uneven depending on the location. Therefore, by maintaining the position of the substrate 30 at a constant position, it becomes easy to maintain a constant culture environment in which the substrate 30 is placed in a closed culture vessel, and the physiological state and proliferation state of the cells for each substrate 30 can be kept constant. Less.
- the holding protrusions 25 are shown over the entire circumference of the substrate 30 for convenience. However, as long as the position of the substrate 30 can be held at a fixed position, the shape, number and arrangement of the holding protrusions 25 are not limited. It is not limited.
- the height of the holding protrusion 25 is preferably larger than the thickness of the substrate 30. In this way, for example, the cell culture surface 30a can be protected from physical damage.
- the substrate 30 has a handle 31.
- the height of the handle 31 is preferably higher than the height of the holding projection 25. By doing in this way, it becomes easy to collect
- the holding protrusion 25 is interrupted at an arbitrary position on the periphery of the substrate 30. By doing in this way, it becomes easy to collect
- Modified Example of Third Embodiment A modified example (not shown) of the third embodiment is different only in the form of the cell culture body 10, and other configurations are the same as those of the third embodiment shown in FIGS. It is the same as the closed system culture container of the embodiment.
- the cell culture body 10 has a bottom surface 10a having a cell culture surface and a side surface 10b extending upward from the periphery of the bottom surface, and the cell culture body in the closed culture container of the first embodiment. 10.
- the side surface 10b extending upward from the periphery of the bottom surface can protect the bottom surface 10a having the cell culture surface from physical damage.
- the fourth embodiment relates to a set of the sealed container 20 and the cell culture body 10 for manufacturing the closed culture container of the first, second and third embodiments.
- the sealed container 20 and the cell culture body 10 are provided in different forms, and the sealed container 20 can be opened and sealed.
- the rest is the same as the first, second, and third embodiments.
- the sealed container 20 may be any sealed container 20 described in the first, second, and third embodiments as long as it can be opened and sealed. From this viewpoint, in the fourth embodiment, the sealed container 20 is preferably a cell culture bag.
- the cell culture body 10 may be any of the cell culture bodies 10 described in the first, second, and third embodiments.
- the cell culture body 10 is preferably packaged aseptically by itself. Thereby, the aseptic state of the cell culture body 10 can be maintained at the time of sale or the like.
- the cell culture body 10 in which the cells are seeded on the cell culture surface 10a is aseptically introduced into the sealed container 20, and then the sealed container 20 is sealed to form a closed culture container. Let it form.
- the closed culture vessel formed using the set of the fourth embodiment is different only in that the cells are adhered to the cell adhesion surface 10a or 30a.
- the first, second and second It is one of the closed-system culture containers of the third embodiment, or is the same as the closed-system culture container according to the modification of the third embodiment.
- Example 1 Production of Closed System Culture Container
- a cell culture dish was introduced into a cell culture bag to produce a closed system culture container of the present invention.
- Trans Well Corneal limbal cells containing human corneal epithelial stem cells were seeded in Trans Well (product number: 3050) manufactured by Corning, USA.
- DMEM / F12 medium containing 10 ng / mL of B27 (manufactured by Life Technologies, product number: 17504044) and keratinocyte growth factor (KGF, manufactured by Wako Pure Chemical Industries, Ltd., product number: 116-00811) was used.
- KGF keratinocyte growth factor
- Example 2 Culture of corneal epithelial cells using a closed culture vessel
- corneal limbal cells were cultured using a closed culture vessel.
- the means for draining the medium was connected to the closed culture vessel of the present invention.
- the culture medium outlet of the closed culture vessel was aseptically connected to an empty Nipro pediatric infusion set (product number: TK-U750P).
- the culture medium was introduced into the closed culture vessel, and when the cells were sufficiently immersed in the culture medium, the flow rate adjusting clamp attached to the tube of the Nipro infant infusion set was closed.
- the obtained closed culture system was introduced into a CO 2 incubator to start cell culture.
- the means for supplying the medium is arranged on the upper shelf in the incubator
- the closed culture vessel of the present invention is arranged on the middle shelf in the incubator
- the means for draining the medium is the lower shelf in the incubator.
- the cells were cultured for 1 week without changing the medium. From the 8th day when cell colonies were sufficiently generated, the cells were cultured for 1 week while changing the medium once every two days.
- the medium was exchanged by adjusting the clamp for adjusting the flow rate attached to the tube of the Nipro pediatric infusion set, releasing the flow path, introducing a new medium, and then closing the clamp.
- TransellWell was taken out from the bag, and the membrane to which cells adhered was cut out from Trans Well.
- the cut out membrane was fixed with 10% neutral buffered formalin solution (manufactured by Wako Pure Chemical Industries, Ltd., product number: 062-01661), and the tissue specimen was stained with hematoxylin eosin according to a conventional method.
- the cross section of the obtained tissue specimen was as shown in FIG. According to FIG. 22, the cultured corneal epithelial cells had a tissue structure similar to the corneal epithelial tissue of about 5 layers.
- Trans Well taken out of the bag was stained with Rhodamine B (product number 180-00132, manufactured by Wako Pure Chemical Industries, Ltd.) in an appropriate amount of water, and it was observed that cells were attached to the side wall of Trans Well (Fig. 23).
- Rhodamine B product number 180-00132, manufactured by Wako Pure Chemical Industries, Ltd.
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Abstract
Description
(1)接着系細胞用の閉鎖系培養容器であって、
開封可能な密閉容器と、
該密閉容器内に配置され、細胞培養面を有する細胞培養体と
を備え、
細胞培養体は、密閉容器から取り外し可能に設けられた、閉鎖系培養容器。
(2)細胞培養体が、細胞培養面を有する底面と、底面周縁から上方へ延びる側面とを有する、上記(1)に記載の培養容器。
(3)細胞培養体の底面周縁から上方へ延びる側面が細胞非接着性である、上記(2)に記載の培養容器。
(4)細胞培養体が、細胞培養面を有する基板である、上記(1)に記載の培養容器。
(5)密閉容器が、無菌的にガス交換が可能なガス交換手段を備え、密閉容器の内部と外部とで無菌的にガス交換可能な容器である、上記(1)~(4)のいずれかに記載の培養容器。
(6)無菌的にガス交換が可能なガス交換手段が、密閉容器の内部と外部とでガス交換可能なフィルターである、上記(1)~(5)のいずれかに記載の容器。
(7)密閉容器が、ガス透過性細胞培養バッグである、上記(1)~(6)のいずれかに記載の容器。
(8)細胞培養体の細胞培養面のみが細胞接着性であり、および/または、基板の他方の面および密閉容器の内面は細胞非接着性である、上記(1)~(7)のいずれかに記載の培養容器。
(9)密閉容器が、細胞接着面に接着系細胞が付着した基板を無菌的に導入することが可能な細胞導入口を備え、細胞導入口は細胞導入後に密封することが可能である、上記(1)~(8)のいずれかに記載の培養容器。
(10)密閉容器が、細胞培養体を外方から保持する保持突起を有する、上記(1)~(9)のいずれかに記載の培養容器。
(11)基板が、基板の縁または側壁に、取っ手を有する、上記(1)~(10)のいずれかに記載の培養容器。
(12)細胞培養体が、細胞培養面を有する底面と、底面周縁から上方へ延びる側面とを有し、側面が基板の細胞培養面から取り外し可能である、上記(1)~(11)のいずれかに記載の培養容器。
(13)密閉容器内部の培地を受けるための受け皿をさらに備えた、上記(1)~(12)のいずれか一項に記載の培養容器。
(15)密閉容器が、細胞培養体を外方から保持する保持突起を有する、上記(14)に記載のセット。
(16)密閉容器内部の培地を受けるための受け皿をさらに備えた、上記(14)または(15)に記載のセット。
上記(1)~(13)のいずれかに記載の培養容器と、
培養容器に培地を供給する培地供給手段と、
培養容器から培地を排出する培地排出手段と
を備えた、閉鎖系細胞培養システム。
以下、図1~3により第一の実施形態について説明する。
本実施形態における閉鎖系培養容器100は、図1、図2および図3に示されるように、開封可能な密閉容器20と、密閉容器内に配置され、細胞培養面を有する細胞培養体10とを備えている。密閉容器20内には、密閉容器20とは別体として構成される細胞培養体10が密閉容器から取り外し可能に配置されている。
開封可能とするために、密閉容器20には、細胞培養体10を取り出すことが可能な形状を有する蓋(図示せず)を設けてもよい。また、細胞培養体10は、密閉容器20から下記に説明される細胞導入口23を介して取り出してもよい。あるいは、密閉容器20には、はさみやメスなどの刃物で切開可能な領域を設けてもよいし、密閉容器20全体が刃物で切開可能な素材で作られていてもよく、または、密閉容器20の一部がフィルムにより剥離可能にヒートシールされていてもよく、これにより密閉容器20の外部に細胞培養体10を取り出すことを可能とすることができる。
この態様では、培養液の導入口21にはそれぞれ新鮮な培養液が導入されたタンクを接続することができる。例えば、1つ目のタンクを1つ目の導入口21に接続し、内部の新鮮な培地を密閉容器20内に導入することができる。そして、タンク内部の新鮮な培養液が消費されたら、またはその鮮度が低下したら、2つ目のタンクを2つ目の導入口21に接続して内部の新鮮な培養液を密閉容器20内に導入することができる。このようにすることで、密閉容器20内に鮮度の高い培地を供給し続けることが可能になる。この態様では、1つ目のタンクが接続された培養液の導入口21は、1つ目のタンクが不要になったときに閉じてもよい。培養液の導入口21は、バルブまたはクランプにより閉じることができる。培養液の導入口21はまた、シール可能なフィルム素材からなる部分を有していてもよく、該部分をシーラーにより閉じてもよい。
これにより、細胞培養体10は、密閉容器20から取り出すことができ、細胞培養体10に付着した細胞のハンドリングが容易になる。また、培養する細胞に適した細胞培養面を有する細胞培養体10を用いることにより、様々な細胞を同一の密閉容器20を用いて培養することができるのである。さらに、細胞培養体10として多種多様な開放系培養容器を密閉容器20内に導入することができる。例えば、細胞培養体10は、ある好ましい態様では、細胞培養用ディッシュである。これにより、閉鎖系培養容器毎に新たな金型を作製する必要が無く、低コストに多種多様な培養容器を製造することができるというメリットがある。具体的には、本発明では、様々な開放系培養容器(市販のものでも良い)を密閉容器20内に密封して滅菌することで様々な開放系培養容器を安価かつ簡便に閉鎖系培養容器に作り替えることが可能である。従って、本発明では、開放系培養容器を密閉容器内に取り外し可能に配置することと、その後、密閉容器を密封することを含んでなる、閉鎖系培養容器の製造方法が提供される。
本実施形態における閉鎖系培養システム20は、図17に示されるように、本発明の閉鎖系培養容器100と、閉鎖系培養容器内に培地を供給する培地供給手段50と、閉鎖系培養容器から培地を排出する培地排出手段51とを備える。
次に、第一の実施形態における閉鎖系培養容器100および閉鎖系培養システム200の動作を説明する。
次に図6~8により、第二の実施形態の閉鎖系培養容器110について説明する。図6~8に示す第二の実施形態の閉鎖系培養容器は、細胞培養体10の形態が異なるのみであり、その他の構成は、図1~3に示す第一の実施形態の閉鎖系培養容器100と同様である。図6~8において、図1~3に示す第一の実施形態の閉鎖系培養容器と同一部分には同一符号を付して説明は省略する。
次に図11~13により、第三の実施形態の閉鎖系培養容器120について説明する。
図11~13に示す第三の実施形態の閉鎖系培養容器は、密閉容器20の形態が異なるのみであり、その他の構成は、図6~8に示す第二の形態の閉鎖系培養容器110と同様である。図11~13において、図6~8に示す第二の形態の閉鎖系培養容器と同一部分には同一符号を付して説明は省略する。
第三の実施形態の変形例(図示せず)では、細胞培養体10の形態が異なるのみであり、その他の構成は、図11~13に示される第三の実施形態の閉鎖系培養容器と同一である。
第四の実施形態は、第一、第二および第三の実施形態の閉鎖系培養容器を製造するための、密閉容器20と細胞培養体10とのセットに関する。
本実施例では、細胞培養用バッグ内に細胞培養用ディッシュを導入して本発明の閉鎖系培養容器を作製した。
本実施例では、閉鎖系培養容器を用いて角膜輪部細胞を培養した。
Claims (17)
- 接着系細胞用の閉鎖系培養容器であって、
開封可能な密閉容器と、
該密閉容器内に配置され、細胞培養面を有する細胞培養体と
を備え、
細胞培養体は、密閉容器から取り外し可能に設けられた、閉鎖系培養容器。 - 細胞培養体が、細胞培養面を有する底面と、底面周縁から上方へ延びる側面とを有する、請求項1に記載の培養容器。
- 細胞培養体の底面周縁から上方へ延びる側面が細胞非接着性である、請求項2に記載の培養容器。
- 細胞培養体が、細胞培養面を有する基板である、請求項1に記載の培養容器。
- 密閉容器が、無菌的にガス交換が可能なガス交換手段を備え、密閉容器の内部と外部とで無菌的にガス交換可能な容器である、請求項1~4のいずれか一項に記載の培養容器。
- 無菌的にガス交換が可能なガス交換手段が、密閉容器の内部と外部とでガス交換可能なフィルターである、請求項5に記載の培養容器。
- 密閉容器が、ガス透過性細胞培養バッグである、請求項5に記載の培養容器。
- 細胞培養体の細胞培養面のみが細胞接着性であり、および/または、基板の他方の面および密閉容器の内面は細胞非接着性である、請求項1~7のいずれか一項に記載の培養容器。
- 密閉容器が、細胞接着面に接着系細胞が付着した基板を無菌的に導入することが可能な細胞導入口を備え、細胞導入口は細胞導入後に密封することが可能である、請求項1~8のいずれか一項に記載の培養容器。
- 密閉容器が、細胞培養体を外方から保持する保持突起を有する、請求項1~9のいずれか一項に記載の培養容器。
- 基板が、基板の縁または側壁に、取っ手を有する、請求項1~10のいずれか一項に記載の培養容器。
- 細胞培養体が、細胞培養面を有する底面と、底面周縁から上方へ延びる側面とを有し、側面が基板の細胞培養面から取り外し可能である、請求項4~11のいずれか一項に記載の培養容器。
- 密閉容器内部の培地を受けるための受け皿をさらに備えた、請求項1~12のいずれか一項に記載の培養容器。
- 密封可能で開封可能な密閉容器と、細胞培養面を有する細胞培養体とのセット。
- 密閉容器が、細胞培養体を外方から保持する保持突起を有する、請求項14に記載のセット。
- 密閉容器内部の培地を受けるための受け皿をさらに備えた、請求項14または15に記載のセット。
- 閉鎖系細胞培養システムであって、
請求項1~13のいずれか一項に記載の培養容器と、
培養容器に培地を供給する培地供給手段と、
培養容器から培地を排出する培地排出手段と
を備えた、閉鎖系細胞培養システム。
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US11078455B2 (en) | 2021-08-03 |
EP3153572A4 (en) | 2018-01-17 |
JP6664692B2 (ja) | 2020-03-13 |
EP3153572A1 (en) | 2017-04-12 |
US20170114315A1 (en) | 2017-04-27 |
JPWO2015190090A1 (ja) | 2017-04-20 |
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