WO2016056630A1 - 細胞培養バッグおよび細胞培養方法 - Google Patents
細胞培養バッグおよび細胞培養方法 Download PDFInfo
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- WO2016056630A1 WO2016056630A1 PCT/JP2015/078671 JP2015078671W WO2016056630A1 WO 2016056630 A1 WO2016056630 A1 WO 2016056630A1 JP 2015078671 W JP2015078671 W JP 2015078671W WO 2016056630 A1 WO2016056630 A1 WO 2016056630A1
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- cell culture
- culture bag
- tubular portions
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- cell
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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
- C12M23/22—Transparent or translucent 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
- C12M23/24—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
- C12M23/34—Internal compartments or partitions
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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
- 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
Definitions
- the present invention relates to a cell culture bag and a cell culture method.
- Japanese Patent Application Laid-Open No. 2005-295904 is made of a gas-permeable plastic, and is formed into a cylindrical shape, a square tube shape with a regular polygonal cross section, a spherical shape, or a hemispherical shape during culture. Cell culture vessels are described.
- transplantation In order to treat liver disease, heart disease, etc. by cell transplantation, it is considered that transplantation of 1 ⁇ 10 9 or more differentiated cells is necessary for one patient. Therefore, it is essential to develop a mass culture technique for pluripotent stem cells.
- the quality of the cultured cells becomes non-uniform even though they are cultured in the same cell culture bag.
- the culture container described in Japanese Patent Application Laid-Open No. 2005-295904 the cell culture environment tends to be non-uniform between a plurality of cylinders formed by heat sealing.
- the present invention has been made in view of the above points, and provides a cell culture bag and a cell culture method capable of ensuring the uniformity of the culture environment of cells to be cultured even when the cell culture scale is expanded. With the goal.
- the cell culture bag according to the present invention has a plurality of tubular tubes having gas permeability in which a tube axis direction is oriented in a first direction and juxtaposed in a second direction intersecting the first direction and separated from each other by a partition wall. And a communication part having gas permeability that allows two adjacent tubular parts among the plurality of tubular parts to communicate with each other in an intermediate region between one end and the other end of the tubular part.
- two or more communicating portions may be provided along the first direction in each of two adjacent tubular portions of the plurality of tubular portions.
- the positions of the communicating portions in the first direction may be aligned between the two adjacent tubular portions. Further, the diameters of the tubular portions may be the same. Moreover, the diameter of a some tubular part and the diameter of a communicating part may be the same.
- the cell culture bag of the present invention can be formed by bonding a gas permeable plastic film.
- the partition wall can be formed by a plurality of seal portions formed on the plastic film. Further, at least one of the plurality of seal portions may have a through hole. The width of the through hole may change along the first direction. It is preferable that the film forming flow direction at the time of forming the plurality of plastic films coincides with the second direction.
- the plurality of plastic films may transmit visible light.
- three or more communicating portions may be provided along the first direction in each of two adjacent tubular portions of the plurality of tubular portions.
- the diameter of each of the plurality of tubular portions is preferably 5 mm or more and 50 mm or less, and the length of each of the plurality of tubular portions in the tube axis direction is preferably 1000 mm or less.
- the cell culture bag according to the present invention may further include a port communicating with each of the plurality of tubular portions on at least one end side in the first direction of each of the plurality of tubular portions.
- the cell culture bag according to the present invention may further include a plurality of ports communicating with each of the plurality of tubular portions on each of the one end side and the other end side in the first direction of each of the plurality of tubular portions.
- the cell culture bag is supported so that the tube axis direction of the plurality of tubular portions is along the vertical direction and at least one port is positioned on the lower side in the vertical direction, Cells are cultured by injecting a culture solution from a port located on the lower side in the vertical direction.
- the culture solution may be added by injecting the culture solution from a port located on the lower side in the vertical direction.
- the culture medium may be added so that the liquid level of the added culture medium reaches the height position of the communicating portion.
- the cell culture bag is supported in a state in which the cell culture bag is curved in a direction intersecting the tube axis direction of the plurality of tubular portions so that the plurality of tubular portions are connected in a ring shape.
- Cells may be cultured.
- the outer periphery of the support column having hooks at a plurality of locations in the circumferential direction and the axial direction and having the axial direction oriented in the vertical direction is set, and the tube axis directions of the plurality of tubular portions are directed in the vertical direction.
- the cell culture bag may be supported by the support column by wrapping the cell culture bag and inserting a hook into the through hole.
- the cell culture bag may be housed in a sealed container to culture the cells.
- cells may be cultured while the cell culture bag is kept stationary during the culture period.
- the cell culture bag and the cell culture method according to the present invention it is possible to suppress a decrease in cell homogeneity associated with expansion of the culture scale.
- FIG. 1 is a plan view showing a configuration of a cell culture bag 10 according to an embodiment of the present invention.
- the cell culture bag 10 is formed by bonding two plastic films having flexibility and gas permeability by a technique such as heat sealing (thermocompression bonding). Note that one plastic film may be folded and bonded.
- the plastic film preferably transmits visible light in order to allow visual observation of cells cultured in the cell culture bag 10.
- the plastic film constituting the cell culture bag 10 for example, polyethylene or polypropylene can be suitably used.
- the cell culture bag 10 has a plurality of tubular portions 11 separated from each other by a partition formed by the seal portions 13 and 14.
- the seal portion refers to a portion where a plurality of films are bonded together.
- the plurality of tubular portions 11 are juxtaposed in a direction intersecting the tube axis direction so that the tube axis directions are parallel to each other.
- the tube axis direction refers to the extending direction of the tubular portion 11 having a tubular shape.
- each tube axis direction of the tubular portion 11 is directed to the Y axis direction, and the plurality of tubular portions 11 are juxtaposed in the X axis direction orthogonal to the Y axis direction.
- FIG. 1 each tube axis direction of the tubular portion 11 is directed to the Y axis direction, and the plurality of tubular portions 11 are juxtaposed in the X axis direction orthogonal to the Y axis direction.
- the structure which the cell culture bag 10 has the six tubular parts 11 is illustrated, However, The number of the tubular parts 11 can be increased / decreased suitably according to a culture scale.
- the cross-sectional shape of the tubular portion 11 is preferably circular, but may be elliptical or not completely circular.
- the cell culture bag 10 has a plurality of communication portions 12 that allow each of two adjacent tubular portions 11 among the plurality of tubular portions 11 to communicate with each other in the intermediate region R of the tubular portion 11.
- the intermediate region R is a region between one end and the other end of the tubular portion 11 in the tube axis direction. More specifically, for each pair of two tubular portions 11 adjacent to each other, a plurality of communication along the tube axis direction (Y-axis direction) of the tubular portion 11 between the two adjacent tubular portions 11.
- a portion 12 is provided. In the example shown in FIG. 1, three communication portions 12 are provided at different positions in the Y-axis direction between the two adjacent tubular portions 11. It suffices that at least one communication portion 12 is provided in the middle along the tube axis direction (Y-axis direction).
- the cross-sectional shape of the communication portion 12 is preferably circular, but may be elliptical or not completely circular.
- the three communication portions 12 provided along the Y-axis direction between the two tubular portions 11 adjacent to each other.
- the positions in are aligned between pairs. That is, the communicating portion 12, in the position Y 1, Y 2 and Y 3 in the Y-axis direction, are arranged so as to penetrate in a straight line a plurality of tubular portions 11 in the X-axis direction.
- the diameters D 1 of the plurality of tubular parts 11 are the same, and the diameters D 2 of the communication parts 12 are the same as the diameters D 1 of the tubular parts 11.
- Diameter D 1 and the diameter D 2 of the communicating portion 12 of the tubular portion 11 is preferably 5mm or more 50mm or less. If D 2 diameter D 1 and the communicating portion 12 of the tubular portion 11 is 50mm or less, the supply of gas to the radial center portion of the tubular portion 11 and the communicating portion 12 can be made enough. On the other hand, if the diameter D 2 of diameter D 1 and the communicating portion 12 of the tubular portion 11 above 5 mm, the flow of culture medium and cell suspension to be accommodated in the cell culture bag 10 in is ensured, a cell culture bag 10 The uniformity of the culture environment can be maintained.
- the tubular portion 11 and the communication portion 12 having a diameter of 5 mm or more can be stably formed.
- the diameters of the tubular part and the communication part are the diameters of the circle when the tubular part and the communication part are circular, and when the tubular part and the communication part are elliptical, the major axis (largest diameter) and minor axis of the ellipse.
- the average value of (the smallest diameter) is used.
- a tubular part and a communication part are not perfect circles, it is set as the average value of the diameter in the perimeter direction.
- the diameters of the tubular portion and the communication portion change in the axial direction, the average value over the entire length is used.
- the outer shape of the cell culture bag 10 is, for example, rectangular, and a seal portion 13 is formed along the outer edge of the rectangle. Further, the cell culture bag 10 has a plurality of seal portions 14 arranged in a lattice pattern inside the seal portion 13.
- the plurality of tubular portions 11 and the plurality of communication portions 12 are partitioned by seal portions 13 and 14. That is, the partition portions of the tubular portion 11 and the communication portion 12 are formed by the seal portions 13 and 14.
- the seal portions 13 and 14 can be formed using a technique such as heat sealing.
- the seal portion 13 is provided with a through hole 15, and the through hole 15 may be used for supporting the cell culture bag 10.
- the cell culture bag 10 has ports 16A and 16B provided on one end side and the other end side in the tube axis direction of the tubular portion 11.
- the ports 16A and 16B have through holes (not shown) that allow the inside and the outside of the cell culture bag 10 to communicate with each other.
- injection and discharge of a cell suspension or a culture solution, air removal from the cell culture bag 10, extraction of cells during culture, and the like can be performed via the ports 16A and 16B.
- the ports 16A and 16B are inserted into the bag body so as to penetrate the seal portion 13 from one end side in the X-axis direction.
- the port 16 ⁇ / b> A is inserted so that the tip portion thereof enters the end region 17 ⁇ / b> A of the cell culture bag 10.
- the port 16B is inserted so that the tip portion thereof enters the end region 17B of the cell culture bag 10.
- the end regions 17A and 17B are regions that communicate with each of the tubular portions 11 on one end side and the other end side in the tube axis direction (Y-axis direction) of the tubular portion 11, respectively.
- the ports 16A and 16B are disposed between the plastic films when the plastic films constituting the cell culture bag 10 are bonded, for example, and are welded to the bag body when the plastic films are bonded by heat sealing or the like.
- variety of the seal part 13 in the side by which the ports 16A and 16B are inserted is wider than the width
- the cell culture bag 10 can be manufactured using a plastic film having flexibility and gas permeability.
- the plastic film can be produced by a known production method such as a solution casting method or a melt extrusion molding method.
- the direction (X-axis direction) in which the plurality of tubular portions 11 of the cell culture bag 10 are aligned coincides with the film forming flow direction (MD: Machine ⁇ ⁇ ⁇ ⁇ Direction) when forming the plastic film.
- MD Film forming flow direction
- TD TransversevDirection
- the gas permeability and other properties can be made uniform among the plurality of tubular portions 11 by making the direction in which the plurality of tubular portions 11 are arranged (X-axis direction) coincide with the film forming flow direction of the plastic film. It becomes possible. That is, the culture environment resulting from the film quality of the plastic film can be made uniform among the plurality of tubular portions 11.
- the cell culture bag 10 can form a large-capacity culture space that can be applied to culture of cells of the order of 1 ⁇ 10 10 , for example, and the length of the tubular portion 11 in the tube axis direction (Y-axis direction) is For example, it is set to 500 mm to 700 mm.
- the tube axis direction (Y) is preferably 1000 mm or less.
- the cell culture bag 10 can be manufactured without joining the tube axis direction, and the film can be manufactured so that the pressure resistance of the film against the pressure of the culture solution is not insufficient.
- the length in the direction orthogonal to the tube axis direction of the tubular part 11 (X-axis direction), that is, the direction in which the plurality of tubular parts 11 are arranged can be appropriately set according to the cell culture scale. , About 1000 mm to 1500 mm.
- the culture solution that can be applied to the cell culture method according to the embodiment of the present invention is not particularly limited, and any culture solution can be applied.
- a basic medium for mammalian cells for example, DMEM, DMEM / F-12, MEM, DME, RPMI1640, MCDB104, 199, MCDB153, L15, SkBM, Basal Medium, E8 base medium
- It is a liquid medium such as a culture medium for maintaining stem cells, a basic medium for insect cells, a medium for yeast, a medium for bacteria, and the like.
- the culture solution that can be applied to the cell culture method according to the embodiment of the present invention is a polymer compound that does not have cytotoxicity for the purpose of continuously floating cells and / or preventing excessive adhesion between cells. May be added.
- the polymer compound added to the culture solution for the above purpose includes, for example, a polymer compound that adjusts the specific gravity of the culture solution, a polymer compound that adjusts the viscosity of the culture solution, and a high molecular compound that forms a three-dimensional network structure in the culture solution. Molecule.
- polymers examples include cellulose, methylcellulose, carboxymethylcellulose, gellan gum, deacylated gellan gum, hyaluronic acid, alginic acid, carrageenan, xanthan gum, diutane gum, starch, pectin and other polysaccharides; collagen, gelatin and other proteins; And synthetic polymers such as polyethylene glycol and polyvinyl pyrrolidone.
- the culture medium that can be applied to the cell culture method according to the embodiment of the present invention includes various components that can be generally added, for example, antibiotics such as penicillin and streptomycin; vitamins or vitamin derivatives such as ascorbic acid and retinoic acid; glucose and the like Sugar sources; amino acids; inorganic salts; serum, serum substitutes; proteins such as transferrin; hormones such as insulin; growth factors; differentiation inhibitors; antioxidants such as 2-mercaptoethanol and dithiothreitol; calcium ions and magnesium Metal ions such as ions, zinc ions, iron ions, copper ions, etc. may be added.
- antibiotics such as penicillin and streptomycin
- vitamins or vitamin derivatives such as ascorbic acid and retinoic acid
- glucose and the like Sugar sources amino acids
- inorganic salts such as transferrin
- hormones such as insulin
- growth factors growth factors
- differentiation inhibitors antioxidants such as 2-mercaptoethanol and dithiothreitol
- the cells to be cultured are not particularly limited, and are animal cells, plant cells, fungal cells, bacterial cells, protoplasts, established cell lines, artificially genetically modified Any cell such as a cell that has been subjected to can be targeted.
- a cell to be cultured is a stem cell.
- the stem cells are not particularly limited as long as they have self-replicating ability and differentiation ability, and may be pluripotent stem cells or somatic stem cells.
- a pluripotent stem cell is a cell having self-renewal ability and pluripotency capable of differentiating into any of ectoderm, mesoderm and endoderm.
- pluripotent stem cells embryonic stem cells (ES cells), induced pluripotent stem cells (iPS cells), embryonic germ cells (EG cells), embryonic cancer Cells (embryonal carcinoma cells; EC cells), multipotent adult progenitor cells (MAP cells), adult pluripotent stem cells (APS cells), Muse cells (multi-lineage differentiating stress enduring cell).
- somatic stem cells include mesenchymal stem cells, hematopoietic stem cells, neural stem cells and the like.
- cells to be cultured are somatic cells constituting the living body and precursor cells thereof. Specifically, lymphocytes, neutrophils, monocytes, megakaryocytes, macrophages, fibroblasts, basal cells, keratinocytes, epithelial progenitor cells, pericytes, endothelial cells, adipose precursor cells, myoblasts, osteoblasts Cells, chondrocytes, hepatocytes, pancreatic ⁇ cells, glial cells, and the like.
- cells to be cultured include animal cells such as CHO, COS, HeLa, HepG2, C127, 3T3, BHK, HEK293, Bowes melanoma cells; insect cells such as Drosophila S2, Spodoptera Sf9; yeast, Aspergillus, etc. Fungal cells; bacterial cells such as Escherichia coli and Bacillus subtilis; plant cells and callus; These cells may be cells into which a protein expression vector has been introduced for the purpose of mass expression of proteins.
- Cells of primary culture or subculture cultured in a culture vessel for small-scale culture such as dishes and flasks are collected from the culture vessel, suspended in the culture medium, and suspended in a cell so that a predetermined cell density is obtained. Prepare a suspension. A predetermined amount of this cell suspension is injected into the cell culture bag 10 of the present invention to culture cells.
- the cell culture bag 10 is supported at the time of cell culture so that, for example, the tube axis direction of the tubular portion 11 is along the vertical direction. That is, in the culture method according to the present embodiment, the cell culture bag 10 is used in a so-called “vertically placed” state. At this time, for example, the port 16A and the end region 17A are arranged on the upper side in the vertical direction, and the port 16B and the end region 17B are arranged on the lower side in the vertical direction. For example, as shown in FIG. 2, the cell culture bag 10 is suspended from the support column by inserting a hook 32 provided on a support column (not shown) through a through-hole 15 provided in the seal portion 13. Supported.
- the method for supporting the cell culture bag 10 is not limited to the above-described method. When the through-hole 15 is not provided in the cell culture bag 10, the cell culture bag 10 is supported using another support member or the like. The bag 10 may be supported.
- the cell culture bag 10 is supported so as to be placed vertically, for example, at a temperature of 30 ° C. to 40 ° C. (preferably 37 ° C.) and a CO 2 concentration of 2%. Controlled to ⁇ 10% (preferably 5%) and contained in a sealed incubator 40.
- cells are cultured while adding a culture solution stepwise. During the culture period, for example, every 12 hours or every 24 hours, a predetermined amount of the culture solution is added to the cell culture bag 10. During the culture period, the cell culture bag 10 is maintained in a stationary state.
- the cell suspension is injected through the port 16B arranged on the lower side in the vertical direction.
- the wall surface of the tubular portion 11 or the communication portion 12 is located above the liquid level after the cell suspension is injected.
- the culture efficiency is reduced.
- the tubular portion 11 or the communication portion 12 is located above the liquid level after the cell suspension is injected. The culture solution components and cells do not adhere to the wall surface, and a decrease in culture efficiency can be prevented.
- the cell suspension when injecting the cell suspension through the port 16B arranged on the lower side in the vertical direction, it is assumed that the cell suspension is pressurized using a pump or the like. In the case where damage to the cell becomes a problem, the cell suspension may be injected through the port 16A arranged on the upper side in the vertical direction. In this case, the cell suspension can be introduced into the cell culture bag 10 without applying pressure by a pump or the like.
- the culture solution when the culture solution is added to the cell culture bag 10 stepwise, the culture solution is injected through the port 16B arranged on the lower side in the vertical direction.
- the culture medium By adding the culture medium via the port 16B, it is possible to prevent the culture medium component from adhering to the wall surface in the upper part of the liquid level after the addition of the culture liquid.
- the specific gravity of the cells if the specific gravity of the cells is larger than the specific gravity of the culture solution, the cells are mixed with the culture solution by injecting additional culture solution from the lower side in the vertical direction. Can be promoted.
- the cell culture method when the cell suspension is first injected into the cell culture bag 10 and when the culture solution is added stepwise, the liquid level reaches the upper communication portion 12. A cell suspension or culture fluid is injected.
- the communication portion is disposed at a position Y 3 in the Y-axis direction 12 Inject the cell suspension to reach
- the cell suspension contained in the respective tubular section 11 it is possible to flow with each other via a respective communication unit 12 disposed at a position Y 3.
- the cell suspension or culture is so arranged that the liquid level reaches the upper communication portion 12.
- the cell suspension and the culture liquid can be circulated through each communication portion 12. Thereby, localization of the cell density and culture solution component in the cell culture bag 10 can be suppressed.
- the cell culture bag 10 has a plurality of tubular portions 11 having gas permeability separated from each other by a partition wall. As described above, by dividing the storage space inside the cell culture bag 10 into a plurality of tubular spaces, when the cell suspension or culture solution is stored inside the cell culture bag 10, the bottom of the cell culture bag 10 is expanded. Can be prevented. Thereby, gas can be supplied uniformly over the entire area inside the cell culture bag 10.
- the pressure applied to the seal portions 13 and 14 is dispersed by dividing the accommodation space inside the cell culture bag 10 into a plurality of tubular spaces. Moreover, when expanding a culture scale, it can respond by increasing the number of the tubular parts 11. FIG. That is, according to the cell culture bag 10 according to the present embodiment, when the culture scale is expanded, the lack of pressure resistance of the cell culture bag does not become a problem, and can be suitably used for mass culture of cells.
- a communicating portion 12 is provided in an intermediate region R between the two adjacent tubular portions 11. It has been. Thereby, it becomes possible for a cell suspension and a culture solution to mutually distribute between the some tubular parts 11, and the localization of the cell density in a cell culture bag 10 and a culture solution component can be suppressed. That is, according to the cell culture bag 10 which concerns on embodiment of this invention, the fall of the uniformity of a culture environment at the time of dividing
- the number of the communication portions 12 provided along the tube axis direction of the tubular portion 11 is set to 2 or more, so that the culture solution is added stepwise.
- mutual circulation between the tubular portions 11 of the added culture solution can be promoted.
- the uniform quality of the cells cultured using the cell culture bag 10 is ensured, These cells can be considered the same lot. That is, cells that can be regarded as the same lot can be cultured, for example, on the order of 1 ⁇ 10 10 cells. Therefore, it is possible to contribute to the realization of treatment by, for example, cell transplantation, which requires a large amount of the same lot cells guaranteed to have uniform quality.
- each diameter D 1 of the plurality of tubular portions 11 is the same, further, the diameter D 2 of the communicating portion 12, the diameter D 1 of the tubular portion 11 It is the same.
- the culture environment between the plurality of tubular portions 11 can be made uniform.
- the gas supply amounts at the radial center of the tubular portion 11 and the communication portion 12 can be made equal. It is assumed that the cells cultured in the cell culture bag 10 are distributed not only in the tubular portion 11 but also in the communication portion 12.
- the diameter of the tubular part 11 and the communication part 12 By making the diameter of the tubular part 11 and the communication part 12 the same, the difference in the culture environment between the tubular part 11 and the communication part 12 can be eliminated. Thereby, the effect which obtains a homogeneous cell over the cell culture bag 10 whole is accelerated
- the communication part 12 passes through the plurality of tubular parts 11 in a straight line in the X axis direction at the positions Y 1 , Y 2 and Y 3 in the Y axis direction. Has been placed. According to such a configuration, when applying the cell culture method in which the culture solution is added step by step, the effect of suppressing the cell density and the localization of the culture solution components in the cell culture bag 10 is promoted.
- the cell culture bag 10 is used in “vertical placement” at the time of cell culture.
- the contact area between the outer surface of the cell culture bag 10 and the gas introduced into the cell culture bag 10 can be maximized. Introduction of gas inside is promoted.
- the cell suspension and the culture solution are injected through the port 16B arranged on the lower side in the vertical direction.
- the port 16B arranged on the lower side in the vertical direction.
- FIG. 4 is a plan view showing a configuration of a cell culture bag 10A according to another embodiment of the present invention.
- the same or corresponding components as those in the cell culture bag 10 are given the same reference numerals, and duplicate descriptions are omitted.
- each of the seal portions 14 is provided with a through hole 18.
- the shape of the through hole 18 may be a rectangular shape along the wall surfaces of the tubular portion 11 and the communication portion 12 as shown in FIG. 4, for example, but is not limited thereto, and is, for example, a circular shape. May be.
- Each of the through holes 18 can be used to support the cell culture bag 10A as described later.
- FIG. 5 is a perspective view showing an example of a support state of the cell culture bag 10A during cell culture.
- FIG. 6 is a perspective view showing an example of the configuration of the support column 30 that supports the cell culture bag 10A during cell culture.
- the column 30 includes a columnar column 31 and a plurality of hooks 32 provided along the circumferential direction and the axial direction (longitudinal direction) of the column 31.
- the support column 30 is arranged so that the axial direction of the column part 31 is along the vertical direction.
- the cell culture bag 10A is arranged so as to surround the outer periphery of the support column 30 in a state where the tube axis direction of the tubular portion 11 is directed in the vertical direction.
- the plurality of hooks 32 are inserted through all or part of the through holes 18 formed in the seal portion 14 of the cell culture bag 10A.
- the cell culture bag 10 ⁇ / b> A is fixed to the support column 30 by being hooked on the hook 32 in the formation portion of the through hole 18.
- the cell culture bag 10 ⁇ / b> A is supported in a state in which the plurality of tubular portions 11 are curved in a direction intersecting the tube axis direction of the plurality of tubular portions 11 such that the plurality of tubular portions 11 are arranged in a ring shape around the support column 30.
- FIG. 7 is a horizontal sectional view of the cell culture bag 10A supported by the support column 30.
- the load per hook insertion portion can be reduced by providing a plurality of portions through which the hook 32 is inserted. Further, in order to make the load in the insertion portion of the hook 32 uniform, the insertion portion of the hook 32 is biased in the tube axis direction of the tubular portion 11 and in the direction intersecting with this (that is, the direction in which the plurality of tubular portions 11 are arranged). It is preferable that they are arranged without any problem.
- FIG. 8 to 14 are plan views showing the configuration of a cell culture bag according to another embodiment of the present invention.
- the same or corresponding components as those in the cell culture bag 10 (see FIG. 1) are given the same reference numerals, and duplicate descriptions are omitted.
- the communication portion 12 is disposed so as to penetrate the plurality of tubular portions 11 in a straight line in the X-axis direction at the positions Y 1 , Y 2 and Y 3 in the Y-axis direction.
- the positions in the Y-axis direction of the communication portion 12 do not have to be aligned between pairs of two tubular portions 11 adjacent to each other. Also in this case, the cell suspension and the culture solution can be circulated between the plurality of tubular portions 11, and the uniformity of the culture environment can be ensured. Further, as a cell culture bag 10C shown in FIG. 9, the diameter D 2 of each of the communicating portion 12 is made larger than the diameter D 1 of the respective tubular portion 11, the cell suspension and culture, The mutual circulation between the plurality of tubular portions 11 is promoted, and the capacity of the cell culture bag can be made larger than that of the cell culture bag 10.
- the above-mentioned cell culture bag 10 (refer FIG. 1) has the ports 16A and 16B in both the one end side and the other end side of the tubular-axis direction of the tubular part 11, it is not limited to this aspect. .
- the port 16B may be provided only on one end side in the tube axis direction of the tubular portion 11.
- the cell culture bag 10D is installed so that the port 16B is on the lower side in the vertical direction, and the cell suspension and culture solution are injected and discharged through the port 16B.
- the configuration can be simplified as compared with the cell culture bag 10 described above.
- the cell suspension and the culture solution can be injected and discharged through the ports 16A and 16B on the upper and lower sides in the vertical direction.
- the degree of freedom in designing the route for injecting and discharging the culture solution can be increased.
- the port 16B may be disposed in an intermediate region between one end and the other end of the tubular portion 11.
- the ports 16A and 16B are inserted into the bag body from one end side in the X-axis direction, but the present invention is not limited to this mode.
- the ports 16D, 16E, and 16F are inserted into the bag body from one end side in the Y-axis direction, and the ports 16G, 16H, and 16I are connected to the other end in the Y-axis direction. It may be inserted into the bag body from the side.
- ⁇ 16L may be inserted into the bag body.
- the ports 16A to 16L can be appropriately used for applications such as injection and discharge of a cell suspension and a culture solution, air bleeding from the cell culture bag 10, and extraction of cells during culture.
- a plurality of ports 16A to 16L are provided, and a specific use is assigned to each port, thereby reducing the risk of contamination.
- the width of the through hole 18 (length in the X-axis direction) is changed along the tube axis direction (Y-axis direction) of the tubular portion 11. You may let them.
- the width in the X-axis direction of the seal portion 14 located on the lower side in the vertical direction may be wider than the width in the X-axis direction of the seal portion 14 located on the upper side in the vertical direction.
- the width of the seal portion 14 located at the lowermost portion is lowered in the vertical direction. You may enlarge it. Further, as shown in FIG.
- the width of the through hole 18 formed in the seal portion 14 located at the lowermost portion may be smaller than the width of the through hole 18 formed in the seal portion 14 located above. Good. Since the pressure applied to the seal portion 14 during cell culture increases downward in the vertical direction, the seal positioned on the lower side in the vertical direction is increased by increasing the width of the seal portion 14 positioned on the lower side in the vertical direction. The breakdown voltage of the portion 14 can be increased. In FIGS. 13 and 14, the width is expanded only for the seal portion 14 located at the lowermost portion, but the width may be increased similarly for the seal portion 14 above the lowermost portion.
- the cell culture bag 10, 10A to 10H is an example of the cell culture bag in the present invention.
- the tubular portion 11 is an example of a tubular portion in the present invention.
- the communication part 12 is an example of the communication part in the present invention.
- the seal portions 13 and 14 are examples of the seal portion in the present invention.
- the through holes 15 and 18 are examples of the through holes in the present invention.
- the ports 16A and 16B are examples of ports in the present invention.
- the incubator 40 is an example of a sealed container in the present invention.
- the column 30 is an example of a column in the present invention.
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Abstract
Description
なお、管状部11の断面の形状は円形であることが好ましいが、楕円形であってもよく、また完全な円形でなくてもよい。
なお、連通部12の断面の形状は円形であることが好ましいが、楕円形であってもよく、また完全な円形でなくてもよい。
なお、管状部および連通部の径とは、管状部および連通部が円形である場合はその円の直径であり、楕円形である場合には、その楕円の長径(最も大きい径)と短径(最も小さい径)の平均値とする。また、管状部および連通部が完全な円形でない場合にはその全周方向での径の平均値とする。さらに、管状部および連通部の径が軸方向で変化する場合はその全長における平均値とする。
多能性幹細胞は、自己複製能と、外胚葉、中胚葉および内胚葉のいずれにも分化し得る多分化能とを有する細胞である。多能性幹細胞としては、胚性幹細胞(embryonic stem cell;ES細胞)、人工多能性幹細胞(induced pluripotent stem cell;iPS細胞)、胚性生殖細胞(embryonic germ cell;EG細胞)、胚性癌細胞(embryonal carcinoma cell;EC細胞)、多能性成体前駆細胞(multipotent adult progenitor cell;MAP細胞)、成体多能性幹細胞(adult pluripotent stem cell;APS細胞)、Muse細胞(multi-lineage differentiating stress enduring cell)などが挙げられる。
体性幹細胞としては、例えば、間葉系幹細胞、造血幹細胞、神経幹細胞などが挙げられる。
Claims (23)
- 管軸方向が第1の方向に向けられるとともに前記第1の方向と交差する第2の方向に並置され且つ互いに隔壁で隔てられたガス透過性を有する複数の管状部と、
前記複数の管状部のうち、互いに隣接する2つの管状部の各々を、前記管状部の一端と他端との間の中間領域において連通させるガス透過性を有する連通部と、
を備える細胞培養バッグ。 - 前記複数の管状部のうちの互いに隣接する2つの管状部の各々において、前記第1の方向に沿って前記連通部が2以上設けられている
請求項1に記載の細胞培養バッグ。 - 前記連通部の前記第1の方向における位置が、前記複数の管状部のうちの互いに隣接する2つの管状部の各々の間で揃えられている
請求項2に記載の細胞培養バッグ。 - 前記管状部の径は各々同じである
請求項1から請求項3のいずれか1項に記載の細胞培養バッグ。 - 前記複数の管状部の径と、前記連通部の径が同じである
請求項1から請求項4のいずれか1項に記載の細胞培養バッグ。 - ガス透過性を有するプラスチックフィルムを貼り合わせて形成された
請求項1から請求項5のいずれか1項に記載の細胞培養バッグ。 - 前記プラスチックフィルムに形成された複数のシール部によって前記隔壁が形成されている
請求項6に記載の細胞培養バッグ。 - 前記複数のシール部のうちの少なくとも1つに貫通孔を有する
請求項7に記載の細胞培養バッグ。 - 前記貫通孔の幅は、前記第1の方向に沿って変化している
請求項8に記載の細胞培養バッグ。 - 前記プラスチックフィルムの製膜時の製膜流れ方向が前記第2の方向と一致している
請求項6から請求項9のいずれか1項に記載の細胞培養バッグ。 - 前記プラスチックフィルムは、可視光を透過する
請求項6から請求項10のいずれか1項に記載の細胞培養バッグ。 - 前記複数の管状部のうちの互いに隣接する2つの管状部の各々において、前記第1の方向に沿って前記連通部が3以上設けられている
請求項1から請求項11のいずれか1項に記載の細胞培養バッグ。 - 前記複数の管状部の各々の径は、5mm以上50mm以下である
請求項1から12のいずれか1項に記載の細胞培養バッグ。 - 前記複数の管状部の各々の管軸方向の長さは、1000mm以下である
請求項1から請求項13のいずれか1項に記載の細胞培養バッグ。 - 前記複数の管状部の各々の前記第1の方向における少なくとも一端側において、前記複数の管状部の各々と連通するポートを更に含む
請求項1から請求項14のいずれか1項に記載の細胞培養バッグ。 - 前記複数の管状部の各々の前記第1の方向における一端側および他端側のそれぞれにおいて、前記複数の管状部の各々と連通する複数のポートを更に含む
請求項1から請求項14のいずれか1項に記載の細胞培養バッグ。 - 請求項15または請求項16に記載の細胞培養バッグを用いた細胞培養方法であって、
前記複数の管状部の管軸方向が鉛直方向に沿い且つ少なくとも1つの前記ポートが鉛直方向下側に位置するように前記細胞培養バッグを支持し、
細胞懸濁液または培養液を鉛直方向下側に位置する前記ポートから注入して細胞の培養を行う
細胞培養方法。 - 培養液を鉛直方向下側に位置する前記ポートから注入して培養液の追加を行う
請求項17に記載の細胞培養方法。 - 追加後の培養液の液面が、前記連通部の高さ位置に達するように培養液の追加を行う
請求項18に記載の細胞培養方法。 - 前記複数の管状部が環状に連なるように前記複数の管状部の管軸方向と交差する方向に前記細胞培養バッグを湾曲させた状態で前記細胞培養バッグを支持して細胞の培養を行う
請求項17から請求項19のいずれか1項に記載の細胞培養方法。 - 請求項8に記載の細胞培養バッグを用いた細胞培養方法であって、
周方向および軸方向の複数箇所にフックを備え且つ軸方向が鉛直方向に向けられた支柱の外周を、前記複数の管状部の管軸方向が鉛直方向に向けられた前記細胞培養バッグで囲み、前記貫通孔に前記フックを挿通させることにより、前記細胞培養バッグを前記支柱で支持して細胞の培養を行う
細胞培養方法。 - 前記細胞培養バッグを密閉容器内に収容して細胞の培養を行う
請求項17から請求項21のいずれか1項に記載の細胞培養方法。 - 培養期間中、前記細胞培養バッグを静置状態に維持して細胞の培養を行う
請求項17から請求項21のいずれか1項に記載の細胞培養方法。
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