WO2016208526A1 - 細胞培養方法、細胞培養用治具および細胞培養装置 - Google Patents
細胞培養方法、細胞培養用治具および細胞培養装置 Download PDFInfo
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- WO2016208526A1 WO2016208526A1 PCT/JP2016/068212 JP2016068212W WO2016208526A1 WO 2016208526 A1 WO2016208526 A1 WO 2016208526A1 JP 2016068212 W JP2016068212 W JP 2016068212W WO 2016208526 A1 WO2016208526 A1 WO 2016208526A1
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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
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
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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
- C12M35/00—Means for application of stress for stimulating the growth of microorganisms or the generation of fermentation or metabolic products; Means for electroporation or cell fusion
- C12M35/04—Mechanical means, e.g. sonic waves, stretching forces, pressure or shear stimuli
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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
- C12M23/26—Constructional details, e.g. recesses, hinges flexible
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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
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/16—Vibrating; Shaking; Tilting
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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
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/36—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of biomass, e.g. colony counters or by turbidity measurements
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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
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
Definitions
- the present invention relates to cell culture using a culture vessel having flexibility, and more specifically, a cell culture method and cell capable of stably forming an aggregate of cells on the cell culture surface in the flexible culture vessel
- the present invention relates to a culture jig and a cell culture apparatus.
- a culture technique using a well plate suitably used in a laboratory or the like can be mentioned.
- a cell in which one or a plurality of wells (recesses) are formed is used, and cells and a culture solution are introduced into each well to perform cell culture.
- the wells are open to the atmosphere, there is a high risk that foreign matter will be mixed in, and there is a problem that the injection and recovery operations for each well are complicated.
- Patent Document 3 for example, in the culture of regenerative medical stem cells such as neural stem cells, it is disclosed that cells can be efficiently cultured in large quantities by forming aggregates of cells at the initial stage of the culture. Yes.
- a U-shaped cross-section container having a U-shaped concave section formed on one side where a cell aggregate is easily formed is used.
- a technique is disclosed in which cell culture is continued in the flat section on the other side by rotating the.
- Patent No. 5098471 Japanese Patent No. 5344094 Patent No. 4543212
- the present invention is intended to use a culture vessel having flexibility, a cell culture method and a cell culture capable of culturing various cells at high quality and in large quantities at low cost.
- An object is to realize a jig and a cell culture apparatus.
- the cell culture method of the present invention applies pressure to the flexible culture vessel while placing the flexible culture vessel filled with cells and culture medium on the placement surface.
- the cells in the flexible culture container are cultured in a state in which the outer surface of the flexible culture container in contact with the placement surface is deformed by application of the pressure.
- the cell culture jig of the present invention has a mounting surface that deforms the outer surface of a flexible culture container filled with cells and a culture solution, and a facing surface.
- a pressing lid capable of moving between a second position farther than the first position.
- the cell culture device of the present invention includes a mounting surface that deforms an outer surface of a flexible culture container filled with cells and a culture solution, and a flexible mounting surface. And a control device that controls the deformation of the outer surface of the flexible culture container in contact with the placement surface by applying pressure to the flexible culture container after the culture container is placed.
- the method for stirring a culture solution of the present invention includes placing a flexible culture vessel filled with cells and culture solution on the placement surface while placing the flexible culture vessel on the placement surface.
- the pressure member is pressed with the pressing member, and the outer surface of the flexible culture container that is in contact with the placement surface is deformed by the pressing of the pressing member, and stirring is performed between the pressing member and the flexible culture container. It is characterized by inserting a member.
- the culture medium agitation apparatus of the present invention is mounted on the mounting surface for deforming the outer surface of the flexible culture container filled with cells and the culture solution, and on the mounting surface described above.
- a pressing member that applies pressure to the placed flexible culture vessel, a stirring member that can be inserted between the pressing member and the flexible culture vessel, and a stirring member driving device that drives the stirring member It is characterized by including these.
- the method for stirring a culture solution of the present invention includes placing a flexible culture vessel filled with cells and culture solution on the placement surface while placing the flexible culture vessel on the placement surface.
- the pressing member is further swung to stir the culture medium. It is characterized by performing.
- mass culture of high-quality cells with reduced contamination risk can be achieved using a flexible culture vessel while allowing cell clumps to be formed as needed.
- FIG. 1 shows a front view of the cell culture device 1 according to the first embodiment of the present invention
- FIG. 2 shows a side view of the cell culture device 1.
- the cell culture apparatus 1 includes a gantry 2 having a placement surface 2a in which one or a plurality of depressions 2b are formed, and the flexible culture vessel FP after the flexible culture vessel FP is placed on the placement surface 2a.
- the control device 13 includes at least a control device 13 that performs control to apply a pressure to the outer surface FPs to form an uneven portion that follows the depression 2b.
- the cell culture apparatus 1 is a flexible culture in a frame 11 adjusted to an appropriate temperature (for example, 37 ° C.), carbon dioxide concentration (for example, 5 to 10% CO 2 concentration), and humidity (for example, about 95%).
- the cells C in the container FP are cultured.
- the flexible culture container FP is a flexible culture container formed into a bag shape using a film-based soft packaging material as a material.
- This flexible culture vessel FP preferably has gas permeability suitable for culturing cells C, and part or all of it is transparent so that the contents can be confirmed.
- the flexible culture vessel FP is composed of a multilayer film having a three-layer structure of a base layer f 1 , an inner layer f 2 and an outer layer f 3 as exemplified in FIGS. 3 (a) to 3 (c), for example.
- One or more ports FP 1 for taking in and out the culture solution and the cells C are provided.
- Base f 1 and the inner layer f 2 is high gas permeability, and using a material having heat sealing properties, and transparency.
- the inner layer 2 is made of a material having low cytotoxicity in addition to the above characteristics.
- materials include linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE, Very Low Density Polyethylene / ULDPE, Ultra Low Density Polyethylene), and low density polyethylene (LDPE, Low Density Polyethylene) or a polyethylene resin such as a blend thereof can be used.
- LLDPE linear low density polyethylene
- VLDPE very low density polyethylene
- LDPE Very Low Density Polyethylene / ULDPE
- LDPE Low Density Polyethylene
- LDPE Low Density Polyethylene
- the outer layer f 3 polyethylene resin density of 0.886g / cm 3 ⁇ 0.93g / cm 3 are preferred.
- the outer layer f 3 may be omitted as appropriate.
- Japanese Patent No. 5344094 may be referred to.
- the cells C cultured in the flexible culture vessel FP there is no particular limitation on the cells C cultured in the flexible culture vessel FP, but cells that are effective in forming cell aggregates (artificial pluripotent stem cells (iPS cells), embryonic stem cells (ES cells)) Neural stem cells, hepatocytes, corneal stem cells, islet cells, etc.) are particularly suitable.
- the culture solution as a medium supplied to the flexible culture vessel FP is also appropriately selected according to the cells C to be cultured.
- the details of each of the components attached to the cell culture apparatus 1 that performs cell culture using the flexible culture container FP filled with such cells C and culture medium will be described.
- the gantry 2 is a plate material on which a flexible culture vessel FP, which will be described later, is placed, and is made of, for example, metal or hard resin.
- the gantry 2 is shown in cross section for easy understanding of the structure, but actually has a plate-like outer shape.
- the gantry 2 has a mounting surface 2a on which the flexible culture vessel FP is mounted, and a recess 2b formed in the mounting surface 2a by only one or more. ing.
- a fixture for fixing the flexible culture vessel FP to the gantry 2 may be provided on the gantry 2.
- a temperature control device such as a coil wire, a thermocouple, or a Peltier element may be provided on the gantry 2, and the temperature of the flexible culture vessel FP may be controlled by the temperature control device mounted on the gantry 2.
- a vibration motor or a vibrator may be attached to the gantry 2 as a mechanism for promoting the collection of the cells C in the depression 2b and stirring the culture solution. Examples of such a vibrator include an ultrasonic vibrator, a piezo drive vibrator, and a crystal vibrator.
- the installation location of the vibrator is not particularly limited, and examples thereof include the placement surface 2a, the recess 2b, and the back surface of the gantry 2 opposite to the placement surface 2a.
- the mounting surface 2a has a function of deforming the outer surface of the flexible culture vessel FP.
- the mounting surface 2a is a flat surface on the pedestal 2 on which the flexible culture vessel FP is mounted.
- One or a plurality of depressions 2b are formed in the first and second recesses 2b.
- the recess 2b refers to a portion that is recessed from the mounting surface 2a.
- the recess 2b has a through-hole shape penetrating from the mounting surface 2a of the gantry 2 to the back surface on the opposite side.
- one or a plurality of depressions 2b on the mounting surface 2a by providing one or a plurality of depressions 2b on the mounting surface 2a, one or a plurality of irregularities are formed on the mounting surface 2a.
- the “dent” in the present invention may be any shape that has an uneven shape when an outer surface FPs (described later) of the flexible culture vessel FP protrudes from the placement surface 2 a toward the recess 2 b, and is not necessarily penetrated. Instead, it may be a recess.
- the gantry support column 3 is a metal or a resin material that supports the gantry 2, and can accommodate the observation device 7, the stage device 12, and the like in a space inside thereof. In the present embodiment, a total of four gantry support pillars 3 support the four corners of the gantry 2.
- the pressing member 4 is a three-dimensional member that is disposed to face the flexible culture vessel FP and has a flat bottom surface that presses the flexible culture vessel FP, for example.
- a transparent resin such as acrylic is used in the present embodiment. It is desirable that the planar shape of the pressing member 4 is at least larger than the flexible culture vessel FP.
- the size of the pressing member 4 is increased if a desired pressure is applied to the flexible culture vessel FP.
- the material of the press member 4 may not be transparent resin, for example, may be comprised with the metal.
- the above-described bottom surface of the pressing member 4 does not necessarily have to be flat.
- a three-dimensional shape having a curved bottom surface (a convex surface protruding in the ⁇ Z direction (downward)) can be used.
- one or a plurality of holes or the like may be provided on the bottom surface (the surface on the side facing the mounting surface 2a) of the pressing member 4.
- the pressurizing device 5 is connected to the pressing member 4 via the piston rod 5a and the connection link 5b, and moves the pressing member 4 forward and backward with respect to the gantry 2 under the control of the control device 13 described later.
- a known piston pump or the like can be applied as the pressurizing device 5 and the piston rod 5a.
- the piston rod 5a is connected to the pressing member 4 through connection links 5b, one at each of the four corners of the pressing member 4, and the bottom surface of the pressing member 4 (the surface on the side facing the gantry 2). ) Can be lowered (moved in the ⁇ Z direction) while the horizontal state is maintained.
- each piston rod 5a can be controlled independently, and its posture can be appropriately adjusted while the piston rod 5a is being lowered.
- the number of piston rods 5a and connection links 5b for one pressing member 4 is not limited to the above-described four, and may be one set or more.
- the pressurization apparatus 5 was described separately in the figure, the pressurization apparatus 5 may be combined as long as each piston rod 5a can be controlled independently.
- the container connection port 6 is installed so as to be connectable to the port FP 1 of the flexible culture container FP.
- the controller 13 controls the opening and closing of the container connection port 6, and a new culture medium is supplied to the flexible culture container FP placed on the placement surface 2 a through the tube T by this control.
- the spent medium is collected from the flexible culture container FP via the tube T.
- a medium supply tank 9 and a medium collection tank 10 described later are installed independently of the flexible culture container FP will be described, but the present invention is not limited thereto. That is, the culture medium supply tank and the culture medium recovery tank may be attached to the flexible culture container FP as dedicated bags, respectively, so that the dedicated bag can be replaced for each culture of the cells C.
- the container connection port 6 is provided with an identification tag reading unit (not shown) so that the contents of the flexible culture container FP connected to the container connection port 6 can be identified.
- an identification tag is attached to a part of the flexible culture container FP (eg, near the port FP 1 ), and the type of the cell C filled in the container and the composition of the culture solution are associated with the identification tag. It has been.
- the control device 13 can execute an appropriate culture process such as start or stop of the culture operation based on the information read by the identification tag reading unit.
- the culture operation referred to in this embodiment includes temperature control / humidity control around the flexible culture container FP, operation control of the pressing member 4 (adjustment of pressing force, etc.), supply and recovery of the culture medium, and the like.
- the identification tag used in the present embodiment is not particularly limited, and a known member may be used, but a bar code, a QR code, an RF tag, an IC tag, and the like are preferable examples.
- the observation device 7 is a device that observes the state of the cells C in the flexible culture vessel FP via an objective lens or the like, and examples thereof include an optical microscope and a fluorescence microscope equipped with a CCD or CMOS image sensor. .
- the observation device 7 is disposed below the gantry 2 so as to be movable in a horizontal direction on a stage device 12 described later.
- one observation device 7 is provided for one gantry 2, but the present invention is not limited to this, and a plurality of observing devices 7 may be arranged according to the position of the recess 2 b.
- the observation device 7 may be installed.
- the observation device 7 can also be displaced around the X-axis direction ( ⁇ X direction) and around the Y-axis direction ( ⁇ Y direction). It is adjustable. Note that the observation device 7 can capture an image of the observed region as necessary, and store the captured data in a memory (not shown) or the like.
- the illumination device 8 is a device that emits light necessary for the observation device 7 to observe the state of the cells C in the flexible culture vessel FP.
- the illumination device 8 is provided in a pair with the observation device 7. Yes.
- Various known light sources may be used as the illuminating device 8.
- the observation device 7 is a fluorescent microscope, a mercury lamp that generates excitation light is exemplified.
- the illumination device 8 is arranged on the opposite side of the imaging device 7 with respect to the gantry 2 (mounting surface 2a).
- the lighting device 8 may be arranged on the same side as the device 7.
- the illumination device 8 may be movable in the horizontal direction while matching the optical axis with the imaging device 7 by a driving mechanism such as an XY stage 12 a, or the optical axis with the imaging device 7. You may provide the adjustment mechanism which adjusts.
- the lighting device 8 may be fixedly disposed on the frame 11 or the like without moving the lighting device 8.
- the medium supply tank 9 is a container in which a medium (such as a culture solution) necessary for culturing the cells C is stored. And the control apparatus 13 performs control which supplies the culture medium stored by this culture medium supply tank 9 to the flexible culture container FP via the tube T by controlling the valve Va and the pump P.
- the medium supply tank 9 is equipped with a temperature control device (not shown), and the temperature inside the container is maintained at a temperature at which the freshness and quality of the medium can be maintained.
- the medium recovery tank 10 is a container for recovering a medium that has been used for culturing cells C in the flexible culture container FP and has finished its effect.
- the control device 13 controls the valve Va and the pump P so as to collect an unnecessary medium (culture solution) from the flexible culture vessel FP via the tube T.
- the medium collected in the medium collection tank 10 may be discarded or supplied to the medium supply tank 9 after being subjected to appropriate processing and reused.
- a pinch valve is used as the valve Va and a pump P is used so that the culture solution does not contact the valve Va or the pump P.
- a peristaltic pump is preferred.
- the frame 11 is a frame that forms an accommodation space in which the above-described members necessary for culturing the cell C such as the gantry 2 and the pressing member 4 are arranged.
- the frame 11 of the present embodiment is formed of a metal such as stainless steel or aluminum, for example, and further includes a partition wall 11a, a side wall 11b, a front door 11c, and a back plate 11d as shown in FIGS. .
- the partition wall 11a partitions a space in which the gantry 2 and the pressing member 4 are disposed and a space in which the culture medium supply tank 9 and the culture medium recovery tank 10 are disposed.
- the space in which the flexible culture container FP is accommodated can be air-conditioned independently of the space in which the medium supply tank 9 and the like are disposed.
- the front door 11c is provided with a handle OP, and an operator can open and close the front door 11c through the handle OP at an arbitrary timing.
- the stage device 12 includes an XY stage 12a that drives the observation device 7 biaxially in a direction parallel to the placement surface 2a under the control of the control device 13.
- a known biaxial drive mechanism such as a feed screw mechanism, a linear ball guide, a cross roller guide, or a planar motor system can be applied.
- the stage device 12 further includes a Z stage 12 b for adjusting the focus of the observation device 7.
- the focus may change depending on the film thickness of the flexible culture vessel FP and the degree of swelling of the concave portion described above. Therefore, the Z stage 12b for focus adjustment is particularly useful for realizing high-precision observation. It is valid.
- a specific focus adjustment method is not particularly limited, but for example, a contrast method using image processing can be cited as a non-limiting method.
- the Z stage 12b is disposed below the observation device 7, and moves the observation device 7 in a direction (Z direction) perpendicular to the placement surface 2a.
- Various mechanisms such as a known screw type or air cylinder type can be applied as the Z stage 12b, and the Z stage 12b may be arranged on the XY stage 12a, or may be moved up and down in the Z direction together with the XY stage 12a.
- the XY stage 12a and the Z stage 12b may be integrated to have a stage configuration capable of driving at least three axes.
- the illuminating device 8 when the illuminating device 8 is also disposed below the gantry 2, the illuminating device 8 may also be driven biaxially by the stage device 12.
- the air conditioning equipment U is a device that is installed on the back plate 11 d side and adjusts the temperature or humidity of the space in which the flexible culture vessel FP and the gantry 2 are accommodated. Therefore, in this embodiment, the air conditioning equipment U performs the air conditioning operation under the control of the control device 13 so that the optimum temperature and humidity for culturing the cells C are maintained.
- the control device 13 is, for example, a computer including a memory in which a predetermined program is stored and a CPU having a calculation function, and has a function of controlling the above-described members to control cell C culture.
- the control device 13 is arranged on the frame 11 for convenience, but is not limited to this example.
- the control device 13 may be incorporated in the side plate 11b with a display, or may be in the form of a personal computer or laptop computer connected to the above-described members to be controlled via a wired or wireless connection.
- the cell culture method of this embodiment is demonstrated using FIG.
- the cell culture method of the present embodiment is applied to the culture vessel while placing a flexible culture vessel filled with cells and a predetermined culture solution on a placement surface having one or a plurality of depressions. This is mainly characterized by culturing the cells in the flexible culture container in a state where the pressure is applied and the outer surface of the flexible culture container in contact with the mounting surface is deformed by the application of this pressure.
- a flexible culture vessel FP as a culture vessel is placed on the placement surface 2a of the gantry 2 (step 1).
- the gantry 2 is formed with a recess 2b that is recessed with respect to the mounting surface 2a.
- the outer surface FPs of the flexible culture vessel FP does not have an uneven portion that follows the recess 2b.
- the temperature of the gantry 2 may be adjusted by adjusting the temperature of the gantry 2 in step 1 and subsequent steps.
- the cells C in the flexible culture vessel FP are stirred (suspended) (step 2).
- the stirring (suspension) treatment is preferably performed at the same time as the flexible culture vessel FP is placed on the placement surface 2 a or immediately before the pressurization by the pressing member 4.
- the timing of the stirring (suspension) treatment is not limited to the above, and it is performed one or more times after the flexible culture container FP is placed on the placement surface 2a until the pressurization is started. Also good. Further, when the cell C has already been stirred (suspended) when the flexible culture vessel FP is placed on the placement surface 2a, this step 2 may be omitted.
- the flexible culture vessel FP is pressed by using the pressing member 4 as shown in FIG. Concave and convex portions are formed on the outer surface FPs of the culture vessel FP along the depression 2b (step 3).
- the control device 13 of the cell culture device 1 controls the pressurizing device 5 to move the pressing member 4 downward, and by this movement, the upper surface of the flexible culture container FP (opposing the pressing member 4).
- the pressing member 4 is pressed against the surface on the side to be pressed.
- the outer surface FPs of the flexible culture vessel FP is deformed into a shape that follows one or more irregularities by application of pressure by the pressing member 4.
- the cells C that have diffused or floated in the flexible culture vessel FP are in the depressions (regions that have entered the recess 2b). Begins to aggregate.
- the cells C are cultured in a state in which the concavo-convex portion following the depression 2b of the placement surface 2a is formed on the outer surface of the flexible culture vessel FP.
- the pressurizing state of the flexible culture container FP by the pressing member 4 is allowed to stand so as to continue for a time required for all the cells to settle, for example, for several minutes to several tens of minutes. Thereby, all the cells C which have floated in the culture solution after standing are precipitated.
- step 4 the culture of the cells C is continued while the pressurization to the flexible culture container FP by the pressing member 4 is maintained (step 4).
- the aggregate C ′ is formed by the aggregation of the cells C in the above-described recess. Note that the size of the aggregate C ′ varies depending on the type of the cell C to be cultured, and may be appropriately determined by experiment or simulation.
- step 3 or step 4 the pressing force by the pressing member 4 is varied based on the state of the outer surface FPs of the flexible culture container FP obtained from the observation device 7 and the degree of aggregation of the cells C. May be adjusted.
- the observation device 7 of the present embodiment can observe the inside and the outer surface of the flexible culture container FP in a state where the pressing by the pressing member 4 is applied to the flexible culture container FP. Moreover, the observation apparatus 7 of this embodiment can observe the inside of the flexible culture container FP through the recess 2b.
- step 5 the control device 13 of the cell culture device 1 controls the pressure device 5 to move the pressing member 4 upward, and is pressed against the upper surface of the flexible culture container FP by this movement.
- the pressing member 4 is retracted upward.
- the outer surface FPs in contact with the mounting surface 2a in the flexible culture vessel FP released from the pressing force is substantially parallel to the mounting surface 2a and is in a flat state.
- the cell culture further proceeds by allowing to stand for a predetermined time in the state of step 5, and the cell culture is terminated after the predetermined time has elapsed. After the cell culture is completed, the operator completes the operation by releasing the front door 11c and taking out the flexible culture container FP from the mounting table 2a.
- the reason for releasing the pressure (pressing force) applied during the cultivation of the cells C is as follows. That is, depending on the type of cell C to be cultured, the culture efficiency is greatly improved by forming an agglomerate, but on the other hand, there is a possibility that inconvenience may occur during the culture while the recess is maintained. More specifically, during the cultivation of cells C, a part of the medium in the container is replaced to increase freshness, or gas (carbon dioxide, oxygen, etc.) that permeates into the container is efficiently diffused in the container. It must be assumed that there is a need to make it happen.
- the concavo-convex portions are maintained on the outer surface FPs of the flexible culture container FP, particularly when the amount of the culture medium (culture solution, etc.) is small, there is a gap between the convex portion and the surface facing the bottom surface of the container. There is a possibility that the culture medium circulation or gas diffusion may be interrupted due to the insufficiency. Therefore, in this embodiment, after the aggregate C ′ having a predetermined size is formed as shown in FIG. 5 (e), the unevenness portion of the flexible culture vessel FP is flattened to thereby improve the efficiency of the medium and gas. Circulation and diffusion were realized.
- a new medium may be appropriately supplied from the medium supply tank 9 into the container during the above-described step 1 to step 5 or in parallel therewith, and the used medium may be supplied from the container to the medium recovery tank 10. May be recovered.
- the observation of the cells C and their aggregates by the observation device 7 may be performed continuously between Step 1 to Step 5, or may be performed intermittently.
- the observation device 7 may be appropriately driven by the stage device 12 to sequentially observe aggregates at a plurality of different locations in the concavo-convex portion of the flexible culture vessel FP.
- the flexible culture container FP has a reduced risk of contamination and is easy to handle. Therefore, in this embodiment, the portable cell culture jig holding the flexible culture container FP is used. It was adopted.
- One of the purposes of using this cell culture jig is that it can be carried by hand like conventional flasks, petri dishes, well plates, etc., but is more efficient and has less contamination risk.
- the culture is realized. That is, the cell culture jig of this embodiment is provided with a mounting surface that deforms the outer surface of a flexible culture container filled with cells and a culture solution, and the mounting surface.
- a first position capable of holding the flexible culture vessel between the placement surface while pressurizing the flexible culture vessel placed on the placement surface, and at least a part of the first position relative to the placement surface And a pressing lid that can move to a second position that is further away from the first position.
- a CO 2 incubator generally used in cell culture
- a clean bench for adding or exchanging a culture solution
- a culture vessel It is possible to move to and from a microscope that observes the cells inside.
- the cell culture jig 20 is opposed to the base 21, a mounting surface 22 provided on the base 21 and having one or a plurality of depressions, and the mounting surface 22.
- the pressure lid 26 is provided.
- the pressing lid 26 is connected to the upper lid 24 via the support column 25, and can approach or be separated from the upper lid 24 while maintaining the posture by the support column 25.
- the upper lid 24 is connected to the base 21 via a hinge 23, and the upper lid 24 is configured to be rotatable about the hinge 23 as an axis.
- the placement surface is first opened with the upper lid 24 opened via the hinge 23 (the pressing lid 26 is in the second position).
- the flexible culture container FP is placed on the base plate 22 and then the upper lid 24 is closed until the upper lid 24 is locked with respect to the base 21 by a lock mechanism (not shown) (at least a part of the pressing lid 26 approaches the placement surface).
- the first position At this time, as the upper lid 24 moves, the pressing lid 26 moves to the upper lid 24 side via the support column 25, whereby a pressing force is applied to the flexible culture vessel FP by the pressing lid 26.
- the pressing force at this time can be generated by the mass of the pressing lid 26, or can be locked in a state where the pressing lid 26 is pressed against the flexible culture vessel FP using an unillustrated lock. Can also be generated. Then, the operator carries the cell culture jig 20 in a state where the pressing force by the pressing lid 26 is applied to the flexible culture vessel FP by hand in the CO 2 incubator, etc., in the flexible culture vessel FP. Work to cultivate cells.
- the cell culture jig 20 of this embodiment in addition to embodiments for use in a CO 2 incubator may be used, for example, cell culture apparatus 1.
- the gantry 2 may be omitted. In that case, the base 21 and the tip of the gantry support column 3 are connected and fixed. It is preferable that
- the cell culture jig 30 is provided so as to face the placement surface of the lower lid 31 having a placement surface having one or a plurality of depressions, and the lower lid 31.
- the pressing lid 33 is configured to include a parallel link 32 that connects the lower lid 31 and the pressing lid 33.
- FIG. 2 shows an example in which only one gantry is arranged in the X direction
- the present invention is not limited to this, and two or more may be arranged side by side.
- a plurality of frames 11 that accommodate the gantry 2 may be arranged side by side in the height direction (Z direction).
- the inside of the frame 11 may be divided into a plurality of sections in the height direction, and the gantry 2 and the pressing member 4 may be disposed in the separated sections.
- Second Embodiment a second embodiment of the present invention will be described with reference to FIG.
- the difference between the second embodiment and the first embodiment is that the pressure applied to the flexible culture vessel FP is generated by the negative pressure source 14 via the gantry 2 ′, and the imaging device 7 ′.
- the gantry 2 ′ of the cell culture device 1 of the present embodiment includes a mounting surface 2 ′ a and a recess 2 ′ b that is recessed downward ( ⁇ Z direction) from the mounting surface 2 ′ a. It has.
- the dent 2′b of the present embodiment is not a through hole penetrating the mount 2 ′ in the Z direction, and is a bottomed recess with respect to the mounting surface 2′a.
- a channel 14b is formed at the bottom of 2'b.
- the cell culture device 1 of the present embodiment is a negative electrode that generates a suction force through the recess 2'b with respect to the flexible culture container FP placed on the placement surface 2'a of the gantry 2 '.
- a pressure generator is provided.
- the negative pressure generator includes a negative pressure source 14, and a pipe 14a that connects the negative pressure source 14 and the flow path 14b of the gantry 2 '.
- the imaging device 7 ′ of the present embodiment is disposed above the gantry 2 ′ and can move in the X direction or the Y direction. It has become.
- the illumination device 8 ′ is also arranged side by side with the imaging device 7 ′.
- the outer surface FPs of the flexible culture container FP is sucked by using the negative pressure generator without using the pressing member, so that the outer surface FPs of the flexible culture container FP is negative pressure.
- the negative pressure source 14 is used to make the inside of the depression 2'b a negative pressure.
- a positive pressure source is used and the depression 2'b is passed through the flexible culture container FP. A positive pressure may be applied.
- the third embodiment differs from the first embodiment in that the gantry 2 ′′ is made of a transparent member such as acrylic resin, and the recess 2 ′′ b of the gantry 2 ′′ is not a through hole but a bottomed recess. There are some points.
- the observation device 7 of the present embodiment is capable of observing the medium on the mounting surface 2 ′′ a and the like. It is possible to observe floating cells C as necessary. In other words, in this embodiment, the observation apparatus 7 can observe and image all the locations of the flexible culture container FP.
- the recess 2 ′′ b is not a through hole but a bottomed recess.
- the present invention is not limited to this, and the shape of the recess 2 ′′ b may be a through hole. According to the third embodiment described above, it is possible to confirm whether the cells C are unevenly distributed in addition to the concave portions of the flexible culture container FP, thereby efficiently collecting the cells C in the concave portions and aggregating the aggregates. Can be formed.
- a fourth embodiment of the present invention will be described with reference to FIG.
- the difference of the fourth embodiment from the first embodiment is that the gantry 2 ′′ is made of a transparent member such as acrylic resin, and the depression 2 ′′ b of the gantry 2 ′′ is not a through hole but a bottomed recess.
- the pressing member 4 is further deleted and the pressure adjusting device 15 is provided.
- the pressure (atmospheric pressure) of the space SP in which the flexible culture vessel FP is disposed is increased by the pressure adjusting device 15.
- the gantry 2 ′′ b of the present embodiment is a recess
- the recess is a closed space when the flexible culture vessel FP is placed on the placement surface 2 ′′ a. Therefore, when the pressure of the pressure regulator 15 increases the pressure in the space SP higher than that in the closed space, an uneven portion that follows the depression 2 ′′ b is formed on the outer surface FPs of the flexible culture vessel FP. Become.
- the flexible culture vessel FP is pressurized in a non-contact state rather than physically pressurized by the pressing member 4 or the like, so that damage to the flexible culture vessel FP is suppressed as much as possible.
- a desired uneven part can be formed.
- the fifth embodiment is different from the first embodiment in that this embodiment includes a culture liquid stirring device and a stirring method, and further, the flexible culture container FP pressed by the pressing member 4 and the pressing member. 4 and the like, and a stirring member driving device 17 that drives the stirring member 16 and the like.
- the cells C in the culture solution in the flexible culture vessel FP can exist as an aggregate C ′.
- the aggregate C ′ is formed in the flexible culture vessel FP, it is desirable to stir only the culture solution without moving the aggregate C ′ as much as possible. Therefore, in the present embodiment, the culture solution stirring apparatus and stirring method described below are employed.
- the culture medium agitation apparatus of the present embodiment is mounted on the mounting surface that deforms the outer surface of the flexible culture container FP filled with the cells C and the culture solution, and on the mounting surface.
- the pressing member 4 that applies pressure to the placed flexible culture vessel FP, the stirring member 16 that can be inserted between the pressing member 4 and the flexible culture vessel FP, and the stirring member 16 are driven.
- a stirring member driving device 17 As the mounting surface, a mounting surface corresponding to the gantry (the gantry 2, the gantry 2 ′, and the gantry 2 ′′) disclosed in any of the first to fourth embodiments described above may be applied. Good.
- the agitating member 16 has a function of being inserted between the pressing member 4 and the flexible culture vessel FP while maintaining the pressurized state of the flexible culture vessel FP by the pressing member 4.
- a material of this stirring member 16 For example, resin materials, such as metal materials, such as stainless steel, and a plastic are applicable.
- at least the surface of the stirring member 16 that comes into contact with the flexible culture vessel FP may be subjected to various surface treatments such as coating with a fluorine-based material or polishing treatment to reduce friction. From the viewpoint of suppressing wear due to contact between the pressing member 4 and the stirring member 16, the surface of the stirring member 16 that faces the pressing member 4 may also be subjected to the surface treatment described above. More specifically, as shown in FIG.
- the stirring member 16 of the present embodiment a rectangular parallelepiped having a rectangular cross section and chamfered corners at four corners can be exemplified.
- the thickness of the stirring member 16 in the Z direction is appropriately set according to the thickness of the flexible culture vessel FP, etc., but when it is excessively thick relative to the thickness of the flexible culture vessel FP, The flexible culture container FP is bitten and the aggregate C ′ is moved. Therefore, the thickness (a non-limiting example) of the stirring member 16 is preferably 3 mm or less.
- the width in the Y direction of the stirring member 16 (a non-limiting example) is appropriately set according to the width in the Y direction of the flexible culture vessel FP, and is preferably about 5 to 10 mm, for example.
- the length (one non-limiting example) of the stirring member 16 in the X direction is appropriately set according to the width of the flexible culture vessel FP in the X direction, and the like, for example, the X direction of the flexible culture vessel FP.
- the width is preferably larger than
- the stirring member driving device 17 supports the stirring member 16 and has a function of moving the stirring member 16 in the insertion direction (Y direction) between the flexible culture vessel FP and the pressing member 4.
- Various known power mechanisms can be applied as the stirring member driving device 17, and examples thereof include a gas cylinder, a rack and pinion mechanism, a ball screw linear motion mechanism, and a linear motion mechanism using a magnet.
- the stirring member driving device 17 of the present embodiment is mounted on one side (upper surface side) of the pressing member 4 and is installed on the other side (bottom surface side) of the pressing member 4. It is connected to the member 16. Thereby, even when the pressing member 4 moves forward and backward with respect to the gantry 2 by the pressurizing device 5, it is possible to follow the movement of the pressing member 4.
- the stirring member drive device 17 does not necessarily need to be mounted on the pressing member 4, and may be provided, for example, on the mounting surface side.
- an elastic member such as a spring mechanism
- the stirring member driving device 17 may support the stirring member 16 through a known lifting mechanism such as a piston so that the stirring member 16 can be moved up and down (moved in the Z direction). Accordingly, for example, the position of the stirring member 16 in the Z direction can be adjusted independently of the movement of the pressing member 4 under the control of the control device 13.
- the culture liquid stirring method of the present embodiment places the flexible culture container FP filled with the cells C and the culture liquid on the placement surface, and presses against the flexible culture container FP.
- the stirring member 16 is inserted between the pressing member 4 and the flexible culture container FP in a state where the outer surface of the flexible culture container FP that is pressed by the pressure member 4 and further pressed by the pressing member 4 is deformed.
- FIG. 11A shows the initial position of the stirring member 16.
- the stirring member 16 4 or at an initial position corresponding to the end of the mounting surface.
- the standby position described above is not limited to the pressing member 4 or the end portion of the placement surface, and may be, for example, the end portion of the flexible culture vessel FP as long as the internal pressure of the flexible culture vessel FP does not change. Other positions may be used.
- the control device 13 controls the stirring member driving device 17 after a predetermined time has elapsed since the aggregate C ′ is formed in the flexible culture vessel FP. Then, control is performed to move the stirring member 16 in the insertion direction (Y direction). Thereby, the stirring member 16 is slid and inserted between the pressing member 4 and the flexible culture vessel FP in a state where the pressing to the flexible culture vessel FP by the pressing member 4 is maintained.
- the moving speed of the stirring member 16 in the insertion direction is appropriately set according to the thickness of the flexible culture container FP, but is preferably relatively low (for example, 1 to 5 mm / sec). Further, the moving speed may be changed intermittently, for example, between 1 mm / sec and 2 mm / sec without making the moving speed of the stirring member 16 in the insertion direction constant.
- the stirring member 16 As the stirring member 16 is inserted (moved) as described above, in the flexible culture vessel FP, the local movement of the culture solution occurs only in the vicinity of the region in contact with the stirring member 16.
- the local movement of the culture solution transitions in the insertion direction (Y direction) as the stirring member 16 moves.
- the movement of this culture solution is local, there is no influence on the aggregate C ′ sinking to the bottom in the flexible culture vessel FP.
- the existing culture solution can be efficiently stirred. In other words, it is possible to gently agitate the culture solution while the aggregate C ′ is submerged in the flexible culture vessel FP.
- the control device 13 presses the pressing member 4 so that the pressure applied to the flexible culture vessel FP is substantially constant. May be adjusted.
- the control device 13 controls the pressing member 4 so that the internal pressure of the flexible culture vessel FP does not change before and after the stirring member 16 is inserted between the pressing member 4 and the flexible culture vessel FP.
- the stirring member 16 a shape having a rectangular cross section and chamfering R processing at four corners is used.
- the present invention is not limited to this.
- a cylindrical shape extending in the X direction with a circular or elliptical cross section may be used.
- a shape having a semicircular or semi-elliptical cross section and a flat upper surface in contact with the pressing member 4 may be used.
- the stirring member 16 of this embodiment was arrange
- the stirring member 16 may be disposed so as to be inclined with respect to the insertion direction of the stirring member 16. More specifically, as shown in FIG. 13A, the stirring member 16 has a shape in which the center in the X direction protrudes to the Y direction side (also referred to as a “boomerang shape” or a “bow shape”). It may be. As a result, it is possible to reduce the friction generated between the stirring member 16 and the flexible culture vessel FP. Furthermore, as shown in FIG.
- the stirring member 16 may be inclined with respect to the X direction even if the stirring member drive devices 17 disposed on both sides of the pressing member 4 are displaced in the Y direction. Good. Also with this configuration, it is possible to reduce the friction generated with the flexible culture vessel FP as the stirring member 16 is inserted.
- the culture medium agitation apparatus in the present embodiment described above may be incorporated in the above-described cell culture apparatus, for example.
- the stirring method of the culture solution in this embodiment may be incorporated into the above-described cell culture method, for example.
- the stirring member 16 is placed between the pressing member 4 and the flexible culture vessel FP in a state where the outer surface of the flexible culture vessel FP that contacts the placement surface is deformed by the pressing of the pressing member 4.
- the present invention is not limited to this embodiment. That is, for example, in the state where the outer surface of the flexible culture vessel FP on the placement surface side is deformed without using the pressing member 4 as in the second embodiment or the fourth embodiment, the upper surface of the flexible culture vessel FP is formed.
- the stirring member 16 may be slid and moved. In other words, the stirring member 16 is moved to slide at least on the upper surface of the flexible culture vessel FP in a state where the outer surface on the mounting surface side of the flexible culture vessel FP is deformed by applying an external force. May be.
- FIG. 14 is a front view showing a modification of the cell culture device 1 applicable to each of the above embodiments.
- the control device 13 of the cell culture device 1 according to this modification has a function of controlling the pressurizing device 5 to rotate the pressing member 4 around the X axis. More specifically, the control device 13 of the present modification displaces the posture of the pressing member 4 by shifting the period of the advance / retreat operation by the pressurizing devices 5 a and 5 b connected to the pressing member 4. And the control apparatus 13 controls the pressurization apparatus 5 and maintains a press after giving a pressing force using the pressing member 4 with respect to the flexible culture container FP mounted in the mounting surface of the mount frame 2. However, control is performed to rotate (swing) the pressing member 4 around the X axis within a minute range.
- the culture medium in the flexible culture container FP is agitated by swinging the pressing member 4 around the X axis, so that the culture medium and permeate gas in the flexible culture container are effective.
- the pressing member 4 is swung around the X axis.
- the pressing member 4 may be swung around the Y axis, or around any axis other than the X axis and the Y axis. May be swung.
- the first modification it is possible to cause a large movement of the culture solution in the flexible culture vessel FP even with a relatively small inclination by the pressing member 4. Therefore, it can be said that this modified example 1 is suitable when stirring (suspension) strong enough to wind up the cells C in the flexible culture vessel FP is performed. That is, the first modification is not limited to the cell culture device, but is effective as a culture solution stirring method and stirring device. Such a stirring method of the culture solution is such that the flexible culture vessel FP filled with the cells C and the culture solution is placed on the placement surface, and the flexible culture vessel FP is pressed with the pressing member 4.
- the culture medium agitating device includes a mounting surface that deforms the outer surface of the flexible culture container FP filled with the cells C and the culture liquid, and a flexible culture container that is mounted on the mounting surface.
- FIG. 15 is a perspective view and a cross-sectional view showing a gantry of the cell culture device in Modification 2.
- the gantry 2? Of this modification has a mounting surface 2? A and a depression 2? B formed by a tapered surface 2? C.
- the tapered surface 2? C is provided such that the diameter gradually increases toward the placement surface 2? A.
- the boundary between the mounting surface 2? A and the depression 2? B becomes obtuse due to the tapered surface 2? C, so that the flexible culture vessel FP is placed on the gantry 2 ?. Inadvertent damage or the like is suppressed.
- the mounting surface that deforms the outer surface of the flexible culture vessel is configured by providing one or a plurality of depressions (through holes or recesses) on the mounting surface, but the present invention is not limited thereto.
- a form in which a plurality of protrusions such as short pins
- a mesh pattern member such as a wire mesh
- the present invention can be suitably used particularly in the case of mass culture while forming a condensed mass of cells in the process of cell culture.
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Abstract
Description
しかしながら第2の手法であっても、培養液の出し入れの際には空気の出し入れを伴うため依然としてコンタミネーションリスクは高いと言える。さらに凹部を備えた培養容器として立体形状となるため、かさばってしまい取扱いが容易とは言えない。
かような要求に応える大量培養の手法として、例えば特許文献2に例示される如きガス透過性のある可撓性培養容器を用いて閉鎖系で自動的に細胞の大量培養を行う手法が開発されている。この可撓性培養容器は比較的大きなサイズで製造することが可能であるので細胞の大量培養が可能であり、さらには閉鎖系であるために培養期間中における異物(菌やウイルスなど)のコンタミネーションリスクを低減できるというメリットもあり好ましい。
そしてこの特許文献3の手法では、細胞の凝集塊が形成されやすい断面U字型の凹部が一側に形成された断面U字型容器を用い、この凹部で細胞の凝集塊を形成した後に容器を回転させることで他側の断面平型部で細胞培養を継続する技術が開示されている。
本発明は上記した課題を一例として解決することを鑑み、その趣意は可撓性を有する培養容器を用いて、種々の細胞を安価に高品質で且つ大量に培養可能な細胞培養方法、細胞培養用治具及び細胞培養装置を実現することを目的とする。
まず本発明の第一実施形態について、図1~6を参照しつつ説明する。
[細胞培養装置]
図1は本発明の第一実施形態にかかる細胞培養装置1の正面図を示し、図2は同細胞培養装置1の側面図を示している。
細胞培養装置1は、1又は複数の窪み2bが形成された載置面2aを有する架台2と、この載置面2aに可撓性培養容器FPが載置された後に可撓性培養容器FPに圧力を印加してその外面FPsに窪み2bに倣った凹凸部を形成する制御を行う制御装置13を少なくとも含んで構成される。この細胞培養装置1は、適切な温度(例えば37℃)、炭酸ガス濃度(例えば5~10%CO2濃度)、及び湿度(例えば約95%)に調整されたフレーム11内において可撓性培養容器FP内の細胞Cを培養するものである。
可撓性培養容器FPは、例えば図3(a)~(c)に例示されるとおり、基層f1、内層f2および外層f3の3層構造の多層フィルムで構成されるとともに、公知の培養液及び細胞Cの出し入れなどを行うためのポートFP1が1又は2以上備えられている。
基材f1及び内層f2は、高ガス透過性、ヒートシール性、及び透明性を備えた材料を用いて構成される。また、内層2は上記特性に加え、低細胞毒性を備える材料で構成される。このような材料としては、例えば直鎖状低密度ポリエチレン(LLDPE,Linear Low Density Polyethylene)や、超低密度ポリエチレン(VLDPE,Very Low Density Polyethylene/ULDPE,Ultra Low Density Polyethylene)、低密度ポリエチレン(LDPE, Low Density Polyethylene)、あるいはこれらのブレンドなどのポリエチレン系樹脂を用いることができる。
また、外層f3としては密度0.886g/cm3~0.93g/cm3のポリエチレン系樹脂が好適である。なお、外層f3は適宜省略してもよい。
なお、本実施形態に好適な可撓性培養容器FPのより詳細な構造は、例えば特許第5344094号などを参照してもよい。
また可撓性培養容器FPに供給される培地としての培養液も、培養する細胞Cに応じて適宜選択される。
以下、かような細胞C及び培養液が充填された可撓性培養容器FPを用いて細胞培養を行う細胞培養装置1につき、更に付属する各構成の詳細を説明する。
載置面2aは、可撓性培養容器FPの外面に変形を与える機能を有し、架台2のうち可撓性培養容器FPが載置される平坦な面であるとともに、この平坦な面内に1または複数の窪み2bが形成されている。
窪み2bは、載置面2aから窪んだ部位をいい、本実施形態においては架台2の載置面2aから反対側の背面にかけて貫通した貫通孔の形状を備えている。このように載置面2aにおいて窪み2bが1又は複数設けられることで、この載置面2aには1又は複数の凹凸が形成されることになる。なお、本発明でいう「窪み」は、可撓性培養容器FPの外面FPs(後述)が載置面2aから窪み2b側に突出することで凹凸状になる形状であればよく、必ずしも貫通させずに凹部となっていてもよい。
押圧部材4は、可撓性培養容器FPに対向して配置され、可撓性培養容器FPを押圧する底面が例えば平面である立体形状の部材である。この押圧部材4の材質としては、本実施形態ではアクリルなどの透明な樹脂が用いられている。押圧部材4の平面形状は、少なくとも可撓性培養容器FPより大きいことが望ましいが、可撓性培養容器FPより小さくても可撓性培養容器FPに所望の圧力がかけられれば大きさなどに特に制限はない。なお、後述する照明装置8が不要であれば、押圧部材4の材質は透明な樹脂でなくともよく、例えば金属で構成されていてもよい。
なお、押圧部材4の上述した底面は平らである必要は必ずしもなく、例えば底面が曲面(-Z方向(下方)に出っ張った凸面)である立体形状のものを用いることもできる。また、可撓性培養容器FP内のガス交換を促進するため、押圧部材4の底面(載置面2aと対向する側の面)には1又は複数の穴などが設けられていてもよい。
なお、本実施形態では、押圧部材4の概ね四隅に1本ずつピストンロッド5aが接続リンク5bを介して押圧部材4と接続されており、押圧部材4の底面(架台2と対向する側の面)が水平状態を維持したまま当該押圧部材4を下降(-Z方向へ移動)させることが可能となっている。また、後述するとおり、各々のピストンロッド5aは独立して制御させることが可能となっており、ピストンロッド5aの下降中に適宜その姿勢を調整することが可能となっている。
なお、1つの押圧部材4に対するピストンロッド5aおよび接続リンク5bの数は上記した4つに限られず、1セット以上あればよい。また、図示では加圧装置5は別個に記載したが、各ピストンロッド5aを独立して制御可能であれば加圧装置5は兼用されていてもよい。
なお、以下では、後述する培地供給タンク9や培地回収タンク10が可撓性培養容器FPとは独立して設置される例を説明するが、これに限られない。すなわち、培地供給タンクおよび培地回収タンクはそれぞれ専用バッグとして可撓性培養容器FPに付属させて、細胞Cの一回の培養毎に専用バッグごと交換可能とされていてもよい。
なお、本実施形態では、容器接続口6には識別タグ読取部(不図示)が設けられており、容器接続口6と接続される可撓性培養容器FPの内容が識別可能となっている。すなわち可撓性培養容器FPの一部(ポートFP1付近など)には識別タグが添付されており、容器内に充填された細胞Cの種別や培養液の組成などが当該識別タグに紐づけられている。これにより、例えば制御装置13は識別タグ読取部で読み取られた情報に基づいて培養動作の開始や停止など適切な培養処理を実行することが可能となる。なお本実施形態でいう培養動作とは、可撓性培養容器FP周りの調温・調湿、押圧部材4の動作制御(押圧力の調整など)、培地の供給や回収などが含まれる。また、本実施形態で用いる識別タグに特に制限はなく公知の部材を用いてもよいが、バーコードやQRコードさらにはRFタグやICタグなどが好適な例である。
培地回収タンク10は、可撓性培養容器FPで細胞Cの培養に用いられて効用を終えた培地を回収するための容器である。制御装置13は、バルブVaおよびポンプPを制御することでチューブTを介して可撓性培養容器FPから不要な培地(培養液)を回収する制御を行う。なお、培地回収タンク10に回収された培地は、廃棄されるか、又は適切な処理を経た後に培地供給タンク9に供給され再利用が為されてもよい。
また、培地供給タンク9および培地回収タンク10が上述した専用バッグの形態である場合には、バルブVaやポンプPに培養液が接触しないように、バルブVaとしてはピンチバルブが、ポンプPとしてはペリスタポンプがそれぞれ好適となる。
また、ステージ装置12は、観察装置7の焦点を調整するためのZステージ12bをさらに含んで構成されている。本実施形態では可撓性培養容器FPのフィルム厚や上述した凹部の膨らみ度合いによって焦点が変化する可能性もあるので、焦点調整用のZステージ12bは高精度な観察を実現するためには特に有効である。なお、具体的な焦点の調整手法に特に制限はないが、例えば画像処理を用いたコントラスト方式が非制限的な手法として挙げられる。このZステージ12bは、観察装置7の下方に配置され、観察装置7を載置面2aと垂直な方向(Z方向)に移動させる。Zステージ12bとしては、公知のネジ式やエアシリンダ式など種々の機構が適用可能であり、XYステージ12a上に配置されてもよいし、XYステージ12aごとZ方向に上下動させてもよい。また、XYステージ12aとZステージ12bとを一体化して少なくとも3軸駆動が可能なステージ構成としてもよい。
なお、上記したとおり、照明装置8も架台2の下方に配置する場合には、この照明装置8もステージ装置12で二軸駆動してもよい。
空調設備Uは、図2に示すとおり、背面板11d側に設置されており、可撓性培養容器FPや架台2が収容される空間の温度または湿度の調整を行う装置である。したがって本実施形態では、空調設備Uは、制御装置13の制御の下で、細胞Cの培養に最適な温度および湿度が維持されるように空調動作を実行する。
なお、図示では制御装置13はフレーム11上に便宜的に配置したが、この例に限られない。例えばディスプレイを伴って側面板11bに制御装置13が組み込まれた形態でもよいし、制御対象の上記各部材と有線又は無線を介して接続されたパーソナルコンピュータやラップトップコンピュータの形態でもよい。
次に図5を用いて本実施形態の細胞培養方法について説明する。
ここで、本実施形態の細胞培養方法は、1又は複数の窪みを有する載置面に細胞と所定の培養液とが充填された可撓性を有する培養容器を載置しながら培養容器に対して圧力を印加し、この圧力の印加によって載置面と接する可撓性培養容器の外面を変形させた状態で、可撓性培養容器内の細胞を培養することなどに主として特徴がある。
なお、架台2に温調装置が搭載されている場合には、このステップ1以降において架台2を温調することで可撓性培養容器FP内の培地温度などを調整することとしてもよい。
続いて図5(b)に示されるように、可撓性培養容器FP内の細胞Cを撹拌(懸濁)させる(ステップ2)。このように可撓性培養容器FP内の細胞Cを攪拌(懸濁)することで、後の工程において各凹部に入る細胞Cの数がおおよそ均一化することが可能となる。撹拌(懸濁)処理は、可撓性培養容器FPが載置面2aに載置されるのと同時か、あるいは押圧部材4による加圧の直前に行うことが好ましい。しかしながら撹拌(懸濁)処理のタイミングは上記に限定されず、可撓性培養容器FPが載置面2aに載置されてから加圧が開始されるまでの間で1又は複数回実施されてもよい。また、可撓性培養容器FPが載置面2aに載置された時点で既に細胞Cが撹拌(懸濁)されている場合には、このステップ2は省略してもよい。
そして押圧部材4によって可撓性培養容器FPの外面FPsに凹凸部が形成されると、可撓性培養容器FP内に拡散又は浮遊していた細胞Cは凹部(窪み2bに入り込んだ領域)内で凝集し始める。このように本実施形態では、載置面2aの窪み2bに倣った凹凸部を可撓性培養容器FPの外面に形成した状態で細胞Cが培養されることになる。押圧部材4による可撓性培養容器FPへの加圧状態は、細胞が全て沈殿するのに要する時間、例えば数分~数十分間だけ継続されるようにして静置される。これにより、静置後には培養液中を浮遊していた細胞Cはすべて沈殿される。
なお、このステップ3又はステップ4においては、観察装置7から得られる可撓性培養容器FPの外面FPsの状態や細胞Cの凝集度合などに基づいて、押圧部材4による押圧力を可変するなどして調整されるようにしてもよい。このように、本実施形態の観察装置7は、押圧部材4による押圧が可撓性培養容器FPに印加された状態でこの可撓性培養容器FPの内部や外面を観察可能となっている。また、本実施形態の観察装置7は、窪み2bを介して可撓性培養容器FPの内部を観察することが可能となっている。
なお、このステップ5の状態で所定時間だけ静置することで細胞の培養が更に進行し、所定時間経過後に細胞の培養が終了する。細胞の培養が終了した後で、作業者は、正面扉11cを解放して載置台2aから可撓性培養容器FPを取り出すことで作業を完結させる。
すなわち、培養する細胞Cの種類によっては凝集塊を形成したほうが培養効率は大きく向上するものの、一方で凹部を維持したままでは培養中に不都合が生じてしまう可能性も想定できる。
より具体的には、細胞Cの培養中には、容器内の一部の培地を交換して鮮度を高めたり、容器内へ透過するガス(二酸化炭素や酸素など)を効率よく容器内で拡散させる必要も生ずることを想定せねばならない。しかしながら可撓性培養容器FPの外面FPsに凹凸部が維持されたままであると、特に培地(培養液など)の量が少ない場合には、凸部において容器の底面と対向する面との間隙が充分に確保できず、培地の循環やガスの拡散などが途絶えてしまう恐れも考えられる。
よって本実施形態では、図5(e)のごとく所定の大きさの凝集塊C´が形成された後は、可撓性培養容器FPの上記凹凸部を平坦化することで培地やガスの効率的な循環や拡散が実現されるようにした。
しかしながら本実施形態のごとき方法を用いれば、押圧部材4による加圧を除荷するだけで、上記で述べたリスクは伴わずに実質的に大きな容器へ凝集塊C´を移し替えたに匹敵する効果を享受することが可能となる。
また、観察装置7による細胞Cやその凝集塊などの観察は、ステップ1~ステップ5の間で連続して行われてもよいし、断続的に行われてもよい。また、観察装置7をステージ装置12で適宜駆動させることにより、可撓性培養容器FPの凹凸部のうち異なる複数の箇所の凝集塊などを順次観察してもよい。
上記したとおり、可撓性培養容器FPはコンタミネーションのリスクが抑制されておりその取扱いが容易であるので、本実施形態ではこの可撓性培養容器FPを保持する可搬性の細胞培養用治具を採用した。この細胞培養用治具を用いる目的の1つは、従来のフラスコやシャーレあるいはウェルプレートなどと同様に手で持ち運びが可能な利点は踏襲しつつ、更に効率的でコンタミリスクの少ない態様で細胞の培養を行うことを実現するものである。
すなわち、本実施形態の細胞培養用治具は、細胞と培養液とが充填された可撓性培養容器の外面に変形を与える載置面と、この載置面に対向して設けられ、載置面に載置される可撓性培養容器を加圧しながら載置面との間で当該可撓性培養容器を保持可能な第1の位置と、少なくともその一部がこの載置面に対して第1の位置よりも離れた第2の位置とを移動可能な押圧蓋と、を含むことを主な特徴としている。
この細胞培養用治具によれば、可撓性培養容器FPを保持した状態で、例えば一般的に細胞培養で用いられるCO2インキュベータと、培養液の追加や交換を行うクリーンベンチと、培養容器内の細胞の観察を行う顕微鏡との間の移動を行うことなどが可能となる。
細胞培養用治具20は、図6(a)に示されるとおり、ベース21と、ベース21上に設けられて1又は複数の窪みを有する載置面22と、この載置面22に対向して設けられた押圧蓋26を含んで構成されている。
押圧蓋26は、上蓋24と支柱25を介して接続されており、支柱25によって姿勢を維持されたままで上蓋24に対して接近又は離隔可能となっている。また、上蓋24はヒンジ23を介してベース21と接続されており、上蓋24がヒンジ23を軸に回転できるように構成されている。
このとき、上蓋24の移動に伴って押圧蓋26が支柱25を介して上蓋24側に移動し、これにより可撓性培養容器FPに押圧蓋26によって押圧力が付与される。なお、このときの押圧力は、押圧蓋26の質量によって発生させることもできるし、不図示の開き止めロックを用いて押圧蓋26を可撓性培養容器FPに押付けた状態でロックをかけることによっても発生させることができる。
そして作業者は、押圧蓋26による押圧力が可撓性培養容器FPに付与された状態の細胞培養用治具20を、CO2インキュベータ内に手などで持ち運んで可撓性培養容器FP内の細胞を培養する作業を行う。
なお、本実施形態の細胞培養用治具20は、CO2インキュベータ内で使用する態様以外にも、例えば細胞培養装置1内で使用してもよい。細胞培養用治具20を細胞培養装置1で使用する場合には架台2を省略してもよく、その場合にはベース21と架台支持柱3の先端とが接続して固定が可能な構造となっていることが好ましい。
可撓性培養容器FPを下蓋31の載置面に載置する際には、図6(b)の左側に示されるように、押圧蓋33は第2の位置に移動される。
そして載置面に可撓性培養容器FPが載置された後は、図6(b)の右側に示されるように、平行リンク32を駆動させて押圧蓋33を可撓性培養容器FPに押し当てる。
次いで、押圧蓋33による可撓性培養容器FPへの押圧力を維持しつつ不図示のロック機構で下蓋31と押圧蓋33とをロックする(押圧蓋33は載置面に近づいて第1の位置となる)。
なお、この細胞培養用治具30をCO2インキュベータ内又は細胞培養装置1内で用いる態様は、上述した細胞培養用治具20の場合と同様なのでその説明は省略する。
さらに、架台2を収容するフレーム11を高さ方向(Z方向)に複数並べて配置してもよい。または、フレーム11内を高さ方向に複数の区画に分離し、この分離した区画内にそれぞれ架台2や押圧部材4を配置してもよい。
次に本発明の第2実施形態について、図7を参照して説明する。
第2実施形態における第1実施形態との相違点は、可撓性培養容器FPに付与される圧力を、架台2´を介して負圧源14によって発生させている点、撮像装置7´が架台2´の上方に配置される点などが挙げられる。
よって以下では第1実施形態との相違点を主として説明し、第1実施形態と同じ構成あるいは機能を有する要素については第1実施形態と同一の符号を付してその説明を適宜省略する(後述する第3~第5実施形態、および変形例1、2についても同じ)。
また、本実施形態の細胞培養装置1は、架台2´の載置面2´a上に載置された可撓性培養容器FPに対して窪み2´bを介して吸引力を発生させる負圧発生装置を備えている。この負圧発生装置は、負圧源14、この負圧源14と架台2´の流路14bとを結ぶ配管14aを含んで構成されている。
以上説明した第2実施形態によっても、押圧部材を用いずに負圧発生装置を用いて可撓性培養容器FPの外面FPsを吸引することで、可撓性培養容器FPの外面FPsは負圧の印加によって窪み2´b(1又は複数の凹凸)に倣った形状に変形し、これにより架台2´の窪み2´bに倣った凹凸部を外面FPsに形成することができる。
なお本実施形態では負圧源14を用いて窪み2´b内を負圧にしたが、負圧源に代えて陽圧源を用いて窪み2´bを介して可撓性培養容器FPに陽圧を印加してもよい。
次に本発明の第3実施形態について、図8を参照して説明する。
第3実施形態における第1実施形態との相違点は、架台2″がアクリル樹脂などの透明部材で構成されている点、架台2″の窪み2″bが貫通孔ではなく有底の凹部である点などが挙げられる。
換言すれば、本実施形態では、観察装置7は可撓性培養容器FPのすべての箇所について観察や撮像することが可能となっている。
なお、本実施形態では、窪み2″bが貫通孔ではなく有底の凹部であるとしたが、これに限られずに窪み2″bの形状を貫通孔としてもよい。
以上説明した第3実施形態によれば、可撓性培養容器FPの凹部以外に細胞Cが偏在していないか確認することができ、これにより効率的に凹部内に細胞Cを集めて凝集塊を形成することが可能となる。
次に本発明の第4実施形態について、図9を参照して説明する。
第4実施形態における第1実施形態との相違点は、架台2″がアクリル樹脂などの透明部材で構成されている点、架台2″の窪み2″bが貫通孔ではなく有底の凹部である点、さらに押圧部材4が削除されて調圧装置15が具備される点などが挙げられる。
一方で本実施形態の架台2″bは凹部であるため、載置面2″aに可撓性培養容器FPが載置されたとき上記凹部が閉空間となっている。
したがって、調圧装置15による圧力の印加で空間SPの圧力が上記閉空間よりも高まることで、窪み2″bに倣った凹凸部が可撓性培養容器FPの外面FPsに形成されることとなる。
以上説明した第4実施形態によれば、押圧部材4などによって物理的に加圧するのではなく非接触状態で可撓性培養容器FPを加圧するので、可撓性培養容器FPの損傷を極力抑制しつつ所望の凹凸部を形成することができる。
次に本発明の第5実施形態について、図10~13を参照して説明する。
第5実施形態における第1実施形態との相違点は、本実施形態は培養液の撹拌装置と撹拌方法を含む点、さらには押圧部材4によって押圧された可撓性培養容器FPと当該押圧部材4との間に挿通可能な撹拌部材16とこの撹拌部材16を駆動する撹拌部材駆動装置17を有する点などが挙げられる。
上記各実施形態で説明したとおり、可撓性培養容器FP内における培養液中の細胞Cは、凝集塊C´として存在することができる。ここで、細胞Cに養分を効果的に供給することなどを目的として、所定時間ごとに可撓性培養容器FP内の培養液を撹拌する作業が必要となる。このとき、可撓性培養容器FP内には凝集塊C´が形成されているので、この凝集塊C´は可能な限り移動させずに培養液だけ撹拌することが望ましい。
そこで本実施形態では、以下で説明する培養液の撹拌装置および撹拌方法を採用した。
図10に示すとおり、本実施形態の培養液の撹拌装置は、細胞Cと培養液とが充填された可撓性培養容器FPの外面に変形を与える載置面と、この載置面に載置された可撓性培養容器FPに対して圧力を印加する押圧部材4と、この押圧部材4と可撓性培養容器FPの間を挿通可能な撹拌部材16と、この撹拌部材16を駆動する撹拌部材駆動装置17と、を含んで構成されている。
なお、載置面については、上記した第1実施形態~第4実施形態のいずれかに開示された架台(架台2、架台2´および架台2″)に対応する載置面を適用してもよい。
より具体的には図11にも示されるとおり、本実施形態の撹拌部材16としては、その断面が矩形状で四隅の角がR状に面取り加工された直方体が例示できる。ここで、撹拌部材16のZ方向における厚みは、可撓性培養容器FPの厚みなどに応じて適宜設定されるが、可撓性培養容器FPの厚みに対して過度に厚い場合には撹拌時に可撓性培養容器FPの噛み込みや凝集塊C´の移動を誘発してしまう。従って、撹拌部材16の厚み(非限定的な一例)としては、3mm以下とすることが好ましい。また、撹拌部材16のY方向における幅(非限定的な一例)は、可撓性培養容器FPのY方向における幅に応じて適宜設定されるが、例えば5~10mm程度が好ましい。さらに撹拌部材16のX向における長さ(非限定的な一例)は、可撓性培養容器FPのX方向における幅などに応じて適宜設定されるが、例えば可撓性培養容器FPのX方向における幅よりも大きいことが好ましい。
図10に示すとおり、本実施形態の撹拌部材駆動装置17は、押圧部材4の一方の側(上面側)に搭載されており、押圧部材4の他方の側(底面側)に設置された撹拌部材16と接続されている。これにより、加圧装置5によって押圧部材4が架台2に対して進退する際にも、この押圧部材4の移動に追従することが可能となる。
なお、撹拌部材駆動装置17は、必ずしも押圧部材4に搭載される必要はなく、例えば載置面側に設けられていてもよい。また、押圧部材4以外に撹拌部材駆動装置17が設置される場合には、押圧部材4におけるZ方向の変位に追従可能とするため、Z方向に対して変位可能な弾性部材(バネ機構など)を介して撹拌部材16と撹拌部材駆動装置17が設置されることが好ましい。
また、撹拌部材駆動装置17は、ピストンなど公知の昇降機構を介して撹拌部材16を昇降(Z方向に関して移動)可能なように支持していてもよい。これにより、例えば制御装置13の制御の下で、押圧部材4の移動とは独立して撹拌部材16のZ方向における位置を調整することが可能となる。
次に、図11をさらに用いて本実施形態における培養液の撹拌方法について説明する。
すなわち、本実施形態の培養液の撹拌方法は、細胞Cと培養液とが充填された可撓性培養容器FPを載置面に載置し、この可撓性培養容器FPに対して押圧部材4で押圧し、さらに押圧部材4の押圧によって載置面と接する可撓性培養容器FPの外面を変形させた状態で押圧部材4と可撓性培養容器FPとの間に撹拌部材16を挿通させることを主とした特徴としている。
なお、上記した待機位置としては、押圧部材4あるいは載置面の端部に限られず、可撓性培養容器FPの内圧が変化しない位置であれば、例えば可撓性培養容器FPの端部など他の位置でもよい。
そして図11(b)および(c)に示すとおり、可撓性培養容器FP内で凝集塊C´が形成されて所定の時間が経過した後、制御装置13は、撹拌部材駆動装置17を制御して撹拌部材16を挿通方向(Y方向)に移動させる制御を行う。これにより、押圧部材4による可撓性培養容器FPへの押圧が維持された状態で、押圧部材4と可撓性培養容器FPとの間に撹拌部材16が滑り込んで挿通される。なお、撹拌部材16の挿通方向への移動速度は、可撓性培養容器FPの厚みなどに応じて適宜設定されるが、比較的低速(例えば1~5mm/sec)であることが好ましい。また、撹拌部材16の挿通方向への移動速度を一定とせずに、例えば1mm/sec~2mm/secの間で断続的に移動速度を変化させてもよい。
これにより、可撓性培養容器FPに形成された凹部(ウェル)に存在する凝集塊C´が分散して不均一になってしまうのを抑制しつつ、可撓性培養容器FP内の上方に存在する培養液を効率的に撹拌することが可能となる。換言すれば、可撓性培養容器FP内で凝集塊C´が沈んだ状態のままで培養液を緩やかに撹拌することが可能となる。
すなわち、撹拌部材16の挿通によって可撓性培養容器FP内における内圧が変化することになるが、例えば制御装置13によって押圧部材4をやや上昇させる(載置面に対して離間させる)ことで、撹拌部材16による上記した内圧の上昇を相殺することが可能となる。
これにより可撓性培養容器FP内の凝集塊C´に余計な刺激を与えずに、撹拌部材16による上記した撹拌動作を実行することが可能となる。
例えば図12(a)に示すとおり、断面が矩形状で可撓性培養容器FPと接触する底面側の角のみ面取りR加工が施された形状を用いてもよい。
さらには、図12(b)に示すとおり、断面が円または楕円形状でX方向に延びる円柱状の形状を用いてもよい。
さらには、図12(c)に示すとおり、断面が半円または半楕円形状であって、押圧部材4と接する上面が平面となった形状を用いてもよい。
例えば図13に示すとおり、撹拌部材16は、当該撹拌部材16の挿通方向に対して斜めに傾斜するよう配置されていてもよい。
より具体的には、図13(a)のとおり、撹拌部材16は、X方向における中心がY方向側に飛び出た形状(「ブーメラン形状」、あるいは「くの字形状」とも称される)となっていてもよい。これにより、撹拌部材16の挿通に伴って可撓性培養容器FPとの間で生じる摩擦を減少させることが可能となる。さらには、図13(b)のとおり、撹拌部材16は、X方向に対して傾斜するように、押圧部材4の両側に配置される撹拌部材駆動装置17のY方向における位置をズラしてもよい。この形態によっても、撹拌部材16の挿通に伴って可撓性培養容器FPとの間で生じる摩擦を減少させることが可能となる。
以上説明した本実施形態における培養液の撹拌装置は、例えば上記した細胞培養装置に組み込まれていてもよい。また、本実施形態における培養液の撹拌方法は、例えば上記した細胞培養方法に組み込まれていてもよい。
また、本実施形態では、押圧部材4の押圧によって載置面と接する可撓性培養容器FPの外面を変形させた状態で押圧部材4と可撓性培養容器FPとの間に撹拌部材16を挿通させたが、本発明はこの態様に限られるものではない。すなわち、例えば第2実施形態や第4実施形態のごとく押圧部材4を用いずに載置面側における可撓性培養容器FPの外面を変形させた状態で、可撓性培養容器FPの上面に撹拌部材16を滑らせて移動してもよい。換言すれば、外力を付与することで可撓性培養容器FPにおける載置面側の外面を変形させた状態で、少なくとも可撓性培養容器FPの上面に撹拌部材16を滑らせるように移動させてもよい。
図14は、上記各実施形態に適用が可能な細胞培養装置1の変形例を示す正面図である。この変形例に係る細胞培養装置1の制御装置13は、加圧装置5を制御して押圧部材4をX軸周りに回転させる機能を備えている。より具体的には、本変形例の制御装置13は、押圧部材4に接続された加圧装置5aと5bによる進退動作の周期をずらすことで、押圧部材4の姿勢を変位させる。
そして制御装置13は、架台2の載置面に載置された可撓性培養容器FPに対して押圧部材4を用いて押圧力を付与した後に、加圧装置5を制御して押圧を維持しつつ押圧部材4をX軸周りに微小な範囲で回転(揺動)させる制御を行う。
なお、本変形例では押圧部材4をX軸周りに揺動させる例を説明したが、Y軸周りに押圧部材4を揺動させてもよいし、X軸およびY軸以外の任意の軸周りに揺動させてもよい。
すなわち本変形例1は、細胞培養装置に限られず培養液の撹拌方法や撹拌装置としても有効である。かような培養液の撹拌方法は、細胞Cと培養液とが充填された可撓性培養容器FPを載置面に載置しつつ、この可撓性培養容器FPに対して押圧部材4で押圧し、この押圧部材4の押圧によって載置面と接する可撓性培養容器FPの外面を変形させた状態で、さらに押圧部材4を揺動させて培養液の撹拌を行うことを特徴する。また、培養液の撹拌装置は、細胞Cと培養液とが充填された可撓性培養容器FPの外面に変形を与える載置面と、この載置面に載置された可撓性培養容器FPに対して圧力を印加する押圧部材4と、この押圧部材4によって可撓性培養容器FPに対して圧力が印加された状態で押圧部材を揺動させる制御を行う制御装置13を含むことを特徴とする。
図15は、変形例2における細胞培養装置の架台を示す斜視図及び断面図である。
図15(a)に示されるとおり、本変形例の架台2?は、載置面2?aと、テーパー面2?cによって形成された窪み2?bを有している。なお、本変形例では窪み2?bは5つ存在するが、5つ以外の任意の数でもよい。
そして図15(b)に示されるとおり、テーパー面2?cは、載置面2?aに向かうにつれて径が漸次広くなるように設けられている。
本発明は、以上で説明した各実施形態や各変形例に限定されるものではなく、本発明の趣旨を逸脱しない範囲内において種々の組み合わせや変更が可能であることを付言する。
例えば上記では、1又は複数の窪み(貫通孔や凹部)が載置面に設けられることで可撓性培養容器の外面に変形を与える載置面が構成されていたが、これに限られずに例えば複数の突起(短いピンなど)が載置面から立った形態や、金網のごとき網目状パターン部材の表面を載置面として構成してもよい。
2、2´、2″、2? 架台
3 架台支持柱
4 押圧部材
5 加圧装置
6 容器接続口
7 観察装置
8 照明装置
9 培地供給タンク
10 培地回収タンク
11 フレーム
12 ステージ装置
12a XYステージ
12b Zステージ
13 制御装置
14 負圧源
15 調圧装置
16 撹拌部材
17 撹拌部材駆動装置
U 空調設備
FP 可撓性培養容器
C 細胞
Claims (19)
- 細胞と培養液とが充填された可撓性培養容器を載置面に載置しつつ、前記可撓性培養容器に対して圧力を印加し、
前記圧力の印加によって前記載置面と接する前記可撓性培養容器の外面を変形させた状態で、前記可撓性培養容器内の細胞を培養することを特徴とする細胞培養方法。 - 前記載置面には1又は複数の凹凸が形成されてなり、
前記可撓性培養容器の外面は、前記圧力の印加によって前記1又は複数の凹凸に倣った形状に変形する請求項1に記載の細胞培養方法。 - 押圧部材を用いて前記載置面上の前記可撓性培養容器を押圧することで、前記可撓性培養容器の外面を前記1又は複数の凹凸に倣った形状に変形させる請求項2記載の細胞培養方法。
- 前記細胞の培養中に前記圧力の印加を解除することにより、前記載置面と接する前記可撓性培養容器の外面を平坦化させる請求項1~3のいずれか一項に記載の細胞培養方法。
- 細胞と培養液とが充填された可撓性培養容器の外面に変形を与える載置面と、
前記載置面に対向して設けられ、前記可撓性培養容器を加圧しながら前記載置面との間で当該可撓性培養容器を保持可能な第1の位置と、少なくともその一部が前記載置面に対して前記第1の位置よりも離れた第2の位置とを移動可能な押圧蓋と、
を含むことを特徴とする細胞培養用治具。 - 細胞と培養液とが充填された可撓性培養容器の外面に変形を与える載置面と、
前記載置面に可撓性培養容器が載置された後に、前記可撓性培養容器に圧力を印加して前記載置面と接する前記可撓性培養容器の外面を変形させる制御を行う制御装置と、
を含むことを特徴とする細胞培養装置。 - 前記載置面には1又は複数の凹凸が形成されてなり、
前記可撓性培養容器の外面は、前記圧力の印加によって前記1又は複数の凹凸に倣った形状に変形する請求項6に記載の細胞培養装置。 - 前記載置面に対向して配置される押圧部材を更に具備し、
前記制御装置は、前記載置面に載置された前記可撓性培養容器に対して前記押圧部材を押し当てる制御を行う請求項6又は7に記載の細胞培養装置。 - 前記圧力が印加された状態における前記可撓性培養容器の内部を観察する観察装置をさらに具備する請求項6~8のいずれか一項に記載の細胞培養装置。
- 前記観察装置は、前記載置面を介して前記可撓性培養容器の内部を観察する請求項9に記載の細胞培養装置。
- 前記観察装置を、少なくとも前記載置面と平行な方向に移動させるステージ装置を更に具備する請求項9又は10に記載の細胞培養装置。
- 前記観察装置は、前記載置面に対して複数設置されてなる請求項9~11のいずれか一項に記載の細胞培養装置。
- 細胞と培養液とが充填された可撓性培養容器を載置面に載置しつつ、前記可撓性培養容器に対して押圧部材で押圧し、
前記押圧部材の押圧によって前記載置面と接する前記可撓性培養容器の外面を変形させた状態で、前記押圧部材と前記可撓性培養容器との間に撹拌部材を挿通させることを特徴とする培養液の撹拌方法。 - 前記撹拌部材の挿通方向に対して当該撹拌部材を斜めに傾斜させて前記押圧部材と前記可撓性培養容器との間を挿通させる請求項13に記載の培養液の撹拌方法。
- 前記撹拌部材が前記押圧部材と前記可撓性培養容器との間を挿通する前後で、前記可撓性培養容器にかかる圧力が変化しないように前記押圧部材の押圧を調整する請求項13又は14に記載の培養液の撹拌方法。
- 細胞と培養液とが充填された可撓性培養容器の外面に変形を与える載置面と、
前記載置面に載置された前記可撓性培養容器に対して圧力を印加する押圧部材と、
前記押圧部材と前記可撓性培養容器の間を挿通可能な撹拌部材と、
前記撹拌部材を駆動する撹拌部材駆動装置と、
を含むことを特徴とする培養液の撹拌装置。 - 前記撹拌部材は、当該撹拌部材の挿通方向に対して斜めに傾斜するよう配置されてなる請求項16に記載の培養液の撹拌装置。
- 前記撹拌部材が前記押圧部材と前記可撓性培養容器との間を挿通する前後で、前記可撓性培養容器にかかる圧力が変化しないように前記押圧部材の押圧を調整する制御装置と、をさらに含む請求項16又は17に記載の培養液の撹拌装置。
- 細胞と培養液とが充填された可撓性培養容器を載置面に載置しつつ、前記可撓性培養容器に対して押圧部材で押圧し、
前記押圧部材の押圧によって前記載置面と接する前記可撓性培養容器の外面を変形させた状態で、さらに前記押圧部材を揺動させて前記培養液の撹拌を行うことを特徴とする培養液の撹拌方法。
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WO2018025743A1 (ja) * | 2016-08-03 | 2018-02-08 | 東洋製罐グループホールディングス株式会社 | 容器の製造方法およびその製造装置、並びに、細胞培養容器、細胞培養方法、細胞培養容器の製造方法及び細胞培養容器の製造装置 |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012239401A (ja) * | 2011-05-17 | 2012-12-10 | Toyo Seikan Kaisha Ltd | 細胞培養方法、及び細胞培養システム |
WO2014045532A1 (ja) * | 2012-09-24 | 2014-03-27 | 東洋製罐グループホールディングス株式会社 | 気泡除去方法、及び気泡除去装置 |
WO2014208004A1 (ja) * | 2013-06-28 | 2014-12-31 | 東洋製罐グループホールディングス株式会社 | 細胞剥離方法 |
WO2015004862A1 (ja) * | 2013-07-09 | 2015-01-15 | 東洋製罐グループホールディングス株式会社 | 計数用装置 |
JP2015116150A (ja) * | 2013-12-18 | 2015-06-25 | 東洋製罐グループホールディングス株式会社 | 細胞培養方法、及び細胞培養装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5344094U (ja) | 1976-09-20 | 1978-04-15 | ||
JP4543212B2 (ja) | 2004-08-20 | 2010-09-15 | 独立行政法人産業技術総合研究所 | 細胞培養容器及び培養方法 |
JP4780462B2 (ja) * | 2006-08-23 | 2011-09-28 | 株式会社フコク | 細胞培養用トレイ状容器 |
JP5098471B2 (ja) | 2007-07-06 | 2012-12-12 | 株式会社フコク | 細胞培養用トレイ状容器並びに同容器への収容物の充填方法 |
-
2016
- 2016-06-20 CN CN201680036867.XA patent/CN107735491B/zh active Active
- 2016-06-20 US US15/739,324 patent/US20190300835A1/en not_active Abandoned
- 2016-06-20 EP EP16814296.6A patent/EP3312268B1/en active Active
- 2016-06-20 JP JP2017524888A patent/JP6806055B2/ja active Active
- 2016-06-20 KR KR1020177037306A patent/KR102545538B1/ko active IP Right Grant
- 2016-06-20 WO PCT/JP2016/068212 patent/WO2016208526A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012239401A (ja) * | 2011-05-17 | 2012-12-10 | Toyo Seikan Kaisha Ltd | 細胞培養方法、及び細胞培養システム |
WO2014045532A1 (ja) * | 2012-09-24 | 2014-03-27 | 東洋製罐グループホールディングス株式会社 | 気泡除去方法、及び気泡除去装置 |
WO2014208004A1 (ja) * | 2013-06-28 | 2014-12-31 | 東洋製罐グループホールディングス株式会社 | 細胞剥離方法 |
WO2015004862A1 (ja) * | 2013-07-09 | 2015-01-15 | 東洋製罐グループホールディングス株式会社 | 計数用装置 |
JP2015116150A (ja) * | 2013-12-18 | 2015-06-25 | 東洋製罐グループホールディングス株式会社 | 細胞培養方法、及び細胞培養装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3312268A4 * |
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WO2018025743A1 (ja) * | 2016-08-03 | 2018-02-08 | 東洋製罐グループホールディングス株式会社 | 容器の製造方法およびその製造装置、並びに、細胞培養容器、細胞培養方法、細胞培養容器の製造方法及び細胞培養容器の製造装置 |
WO2018230544A1 (ja) * | 2017-06-15 | 2018-12-20 | 東洋製罐グループホールディングス株式会社 | 細胞培養方法及び装置 |
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JP7035343B2 (ja) | 2017-06-15 | 2022-03-15 | 東洋製罐グループホールディングス株式会社 | 細胞培養方法及び装置 |
EP3640322A4 (en) * | 2017-06-15 | 2021-03-03 | Toyo Seikan Group Holdings, Ltd. | CELL CULTURE PROCESS AND DEVICE |
WO2019138956A1 (ja) * | 2018-01-09 | 2019-07-18 | 東洋製罐グループホールディングス株式会社 | 細胞培養方法及び装置 |
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Publication number | Publication date |
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EP3312268B1 (en) | 2021-08-18 |
JPWO2016208526A1 (ja) | 2018-05-10 |
US20190300835A1 (en) | 2019-10-03 |
JP6806055B2 (ja) | 2021-01-06 |
CN107735491B (zh) | 2022-01-04 |
EP3312268A1 (en) | 2018-04-25 |
KR102545538B1 (ko) | 2023-06-19 |
KR20180042166A (ko) | 2018-04-25 |
EP3312268A4 (en) | 2019-03-20 |
CN107735491A (zh) | 2018-02-23 |
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