WO2022149606A1 - 細胞培養器及び並列フィルター接続器 - Google Patents
細胞培養器及び並列フィルター接続器 Download PDFInfo
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- WO2022149606A1 WO2022149606A1 PCT/JP2022/000286 JP2022000286W WO2022149606A1 WO 2022149606 A1 WO2022149606 A1 WO 2022149606A1 JP 2022000286 W JP2022000286 W JP 2022000286W WO 2022149606 A1 WO2022149606 A1 WO 2022149606A1
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- incubator
- opening
- cell incubator
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M37/00—Means for sterilizing, maintaining sterile conditions or avoiding chemical or biological contamination
- C12M37/02—Filters
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
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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
- C12M23/46—Means for fastening
Definitions
- the present invention relates to a cell incubator (hereinafter, also simply referred to as "incubator”) which is a container for injecting cells and a liquid medium for cell culture, and in particular, an inner gas phase and an outer gas phase.
- the present invention relates to a cell incubator in which two different types of filters are attached in parallel to the boundary of the cell incubator, and a parallel filter connector for attaching these filters in parallel to the main body of the cell incubator.
- Mass culture of cells is generally performed for the production of biopharmaceuticals such as vaccines, recombinant protein preparations, and cell medicines.
- the cells to be cultured include cells that can be cultured in a floating state in a liquid medium (hereinafter, also referred to as “floating cells”) and cells that can be cultured in a state of being adhered to the surface of some support that serves as a scaffold.
- floating cells a liquid medium
- adhered to the surface of some support that serves as a scaffold There are two types of cells that are practically needed (hereinafter also referred to as “adhesive cells”).
- mass culture can be performed in a relatively small occupied area by shaking culture using a flask or by stirring culture using a stirring blade installed inside the incubator.
- the medium cannot be agitated.
- a medium is used to promote gas exchange between the gas phase and the liquid phase. It is necessary to increase the surface area per volume of the medium and make the liquid depth of the medium shallow.
- the incubator for adhesive cells is provided with an opening for taking in and out of cells, exchanging medium, and the like. This opening is closed with a cap during the culture period so that the inside of the incubator is not contaminated.
- the components of the gas phase in the incubator will gradually change as the cells metabolize.
- Sufficient gas exchange needs to be ensured between the inside and outside of the incubator to prevent such changes.
- the incubator is fitted with a cap equipped with a filter (membrane filter) that allows the gas phase to pass through to some extent, and through this filter, the inner gas phase and the outer gas phase of the incubator are attached. Gas exchange takes place.
- a multi-layer incubator which is a cell incubator in which a plurality of trays having a support surface to which cells adhere are laminated and integrated, has been developed (Patent Document 1).
- This type of incubator takes the form of a laminate of those chambers, with a common opening with a cap that is removed during cell loading and unloading into each tray and medium replacement, as well as internal and external gas phases.
- a common opening (to which a cap with a membrane filter is attached) for phase exchange is provided at the top of each laminate.
- the medium is added to the incubator so that the gas phase is secured and the upper surface of the flat support provided on each tray is immersed in the liquid medium. In this way, cells can adhere to the surface of the support of each tray and survive and proliferate.
- the present inventors make the incubator dented and fresh when the medium is discharged (natural flow due to height difference through a tube or suction by a pump).
- the incubator deforms to swell, and those deformations often cause damage such as cracks in the incubator. I found a new one. If such damage occurs, the culture cannot be continued and all the various preparations and operations up to that point are wasted. In addition, even if it is not damaged, careful work with the utmost care to avoid damage is required for medium replacement. These have a non-negligible adverse effect on the efficiency of the entire process of mass culture of adhesive cells.
- the problems are that the pressure inside the incubator is reduced due to the expansion of the gas phase capacity in the incubator when the medium is discharged from the incubator, and the gas phase capacity in the incubator is reduced when the fresh medium is injected. Due to the compression of the gas phase. It seems that the membrane filter installed for exchanging the gas phase inside the incubator and the gas phase outside does not have sufficient air permeability to eliminate the change in air pressure inside the incubator that occurs during the medium exchange. Is done.
- the present inventors tried to solve this problem, and when a depth filter capable of rapidly allowing gas to permeate in the presence of a pressure difference was adopted instead of the membrane filter, the incubator was deformed when the medium was replaced. We have newly found that it can be avoided and there is no concern about damage.
- the present invention has an advantage that it is possible to prevent deformation of the incubator in the operation of moving cells in and out and exchanging the medium, and to prevent an increase in carbon dioxide concentration and a decrease in the pH of the medium during cell culture.
- the purpose is to provide.
- the present invention has been completed by further studying based on the results obtained above, and includes the following.
- a cell incubator which is provided with two different types of filters in parallel so as to demarcate between the inner gas phase and the outer gas phase of the cell incubator.
- At least one of the two types of filters is provided in the form of a filter unit that has a penetrating flow path and holds the filter so as to divide the flow path back and forth, and the filter unit is provided on one side of the flow path.
- the cell incubator according to 1 above which is connected to a corresponding opening provided in the gas phase region of the main body of the cell incubator at the opening of the cell incubator.
- Each of the two types of filters is provided in the form of a filter unit having a penetrating flow path and holding the filter so as to separate the flow path back and forth, and each of the filter units is provided in the flow path.
- Each of the two filters so as to separate each of the parallel channels through two of the three openings of the parallel filter connector having an internal space having three openings communicating with each other back and forth.
- the parallel filter connector is connected to the corresponding opening provided in the gas phase region of the main body of the cell incubator at the remaining opening.
- the cell incubator according to.
- At least one of the two types of filters is provided in the form of a filter unit having a penetrating flow path and holding the filter so as to divide the flow path back and forth, and the filter unit is provided in the form of the flow path.
- the cell incubator according to 4 above which is connected to the corresponding opening provided in the parallel filter connector at the opening on one side of the above.
- Each of the two types of filters is provided in the form of a filter unit having a penetrating flow path and holding the filter so as to divide the flow path back and forth, and each of the filter units is provided with the flow. 4.
- the cell incubator according to 4 above which is connected to a corresponding opening provided in the parallel filter connector at an opening on one side of the path.
- the filter unit and the main body of the cell incubator are provided with a corresponding male-threaded portion and a female-threaded portion or corresponding male-type and female-type tapered fitting surfaces in a pair of openings connected to each other.
- the cell incubator according to 2 or 3 above.
- the body of the cell incubator and the parallel filter connector are provided with corresponding male and female threads or corresponding male and female tapered fitting surfaces at the paired openings that are interconnected.
- the filter unit, the main body of the cell incubator, and the parallel filter connector are connected to each other in a pair of openings, and the corresponding male and female threads or the corresponding male and female tapered fittings.
- the cell incubator according to any one of 5 or 6 above, which comprises a mating surface, respectively.
- a parallel filter connector for connecting to the main body of the cell incubator, which has an internal space having three openings communicating with each other, and one of the three openings is the main body of the cell incubator. It is configured to be connected to the corresponding opening provided in the, and the other two openings are (1) Whether one or the other of two different filters is provided so as to separate the internal space from the outside. (2) One opening is provided with one of two different filters so that the internal space is separated from the outside, and the other opening is provided with a penetrating flow path to separate the flow path back and forth. Two types are configured to be connected to the corresponding opening of the filter unit holding the other of the two different filters, or (3) provided with a penetrating flow path to separate the flow path back and forth. It is configured to be connected to the corresponding openings of two filter units, each holding one or the other of different filters. Parallel filter connector.
- the opening joined to the opening of the main body of the cell incubator is provided with a male or female thread corresponding to the opening of the main body of the cell incubator or a male or female tapered fitting surface.
- kit (1) or (2) for assembling the parallel filter connector according to 23 (1) A kit including a parallel filter connector having one of the two different filters and a filter unit having the other of the two different filters; (2) A kit including a parallel filter connector, a filter unit having one of the two different filters, and a filter unit having the other of the two different filters.
- the present invention it is possible to prevent deformation such as swelling and denting of the cell incubator that occurs during the medium exchange operation in the cell incubator and damage to the cell incubator due to them, and accumulation of carbon dioxide gas in the cell incubator. It is possible to provide a cell incubator capable of preventing the above-mentioned problems and maintaining the pH of the medium in an appropriate range during the culture period.
- FIG. 2 is a graph showing the measurement results of the pH of the medium during the culture period performed in the incubator using only one of the depth filter and the membrane filter obtained in Example 1 and Example 2 as an average value. ..
- FIG. 3 shows the tests obtained in Example 5 in which only the depth filter, only the membrane filter, or both the depth filter and the membrane filter via the parallel filter connector were used in the incubator. , It is a graph which shows the measurement result of pCO 2 (%) of each medium.
- the vertical axis shows the pCO 2 (%) of the medium, and the horizontal axis shows the elapsed time (time) from the start of the test.
- FIG. 4 shows the test obtained in Example 5 in which only the depth filter, only the membrane filter, or both the depth filter and the membrane filter via the parallel filter connector were used in the incubator. , It is a graph which shows the measurement result of the pH of each medium. The vertical axis shows the pH of the medium, and the horizontal axis shows the elapsed time (time) from the start of the test. ⁇ indicates the result with only the depth filter, ⁇ indicates the result with only the membrane filter, and ⁇ indicates the result with both filters used together.
- a schematic cross-sectional view of a parallel filter connector in one embodiment of the present invention is shown.
- a schematic cross-sectional view of an incubator main body in which the parallel filter connector of FIG. 5 is attached to the first main body opening and a cap with a tube is attached to the second main body opening is shown.
- a membrane filter unit is attached to the second opening of the parallel filter connector, and a depth filter unit is attached to the third opening.
- a schematic cross-sectional view of an incubator body having an opening is shown.
- a membrane filter unit is connected to the first main body opening, a depth filter unit is connected to the second main body opening, and a cap with a tube is connected to the third main body opening.
- a schematic cross-sectional view of an incubator comprising a membrane filter and a depth filter as an embodiment of the present invention and having an opening to which a cap with a tube is attached is shown.
- cell incubator refers to a container capable of culturing animal cells, plant cells, etc. while maintaining a state in which foreign substances such as microorganisms do not invade from the outside. That means.
- cell incubator body or “incubator body” refers to a container in which the medium and cells are held during the culture period, and the “filter” is excluded from the “cell incubator” or “incubator”. Means a part.
- a multi-layer incubator is included as an embodiment of the cell incubator of the present invention.
- the multi-layer incubator is for enabling mass culture in shallow liquid depth while ensuring a large adhesion area for cells, and the adhesion surface of cells and multiple trays formed in a shallow tray are vertical. It is a multi-layered incubator that is stacked in the direction and fixed integrally.
- the support surface (upper surface) of each tray has a space for accommodating the medium and the gas phase in contact with the medium directly above the lower surface of the tray, and provides an adhesive surface for the cells, so that it corresponds to the number of trays.
- a large cell adhesion area can be secured.
- the multi-layer incubator has, for example, a multi-layer structure consisting of trays of 2 to 40 layers, 10 to 40 layers, 10 to 20 layers, 2 layers, 10 layers, 20 layers, 30 layers, and 40 layers.
- the adhesion surface of cells inside the incubator may be referred to as the culture surface of the incubator or simply the culture surface.
- the embodiment of the incubator of the present invention includes not only the above-mentioned multi-layer incubator but also an incubator for single-layer culture having a large area, for example, an adhesion area of 500 cm 2 or more, and can be suitably carried out.
- the bonding area may be, for example, 500 to 2000 cm 2 , 1000 to 2000 cm 2 , and the like.
- the term "incubator” includes both a multi-layer incubator and a single-layer incubator.
- the material of the incubator is not particularly limited, but for example, all or at least a part thereof is formed of a polycarbonate resin, a polyester resin, a polystyrene resin, or an acrylic resin.
- the incubator has a strength that does not damage the incubator due to the strain of the incubator that occurs when the inside of the incubator is depressurized or pressurized. Operations such as medium exchange can be performed without pressurizing. That is, according to the present invention, since the strength required for the incubator can be reduced, the outer wall of the incubator can be thinned to reduce the material required for manufacturing the incubator.
- the incubator body of the present invention has two or more openings, for example, two openings (first and second body openings) and three openings (first to third body openings). ).
- One of these openings functions as (1) below and the rest as (2) below.
- (2) A vent that allows gas to be exchanged between the internal gas phase and the outside air without contaminating the inside of the incubator.
- the openings used for injecting and discharging cells and medium should be covered so that they are airtight during culture, and when injecting or discharging cells or medium, the openings should be covered.
- This lid is removed.
- a cap with a flexible tube that penetrates hereinafter referred to as "cap with tube”
- the tube of the cap with the tube is closed by clipping or the like during cell culture.
- the medium and the cell injection port and the opening used for the discharge may be a cap with a tube fixed integrally to the container body.
- the membrane filter is a film-like filter in which circular holes (“holes”) having an inner diameter of substantially submicron order, which penetrates substantially perpendicular to the surface thereof, are formed over the entire surface. ..
- the pore size of the membrane filter is not particularly limited as long as it can prevent the passage of microorganisms and allow oxygen molecules and carbon dioxide molecules to pass through, but for example, 0.15 to 1.0 ⁇ m, 0.15 to 0.8 ⁇ m, 0.2 to It is 0.8 ⁇ m, 0.2 to 0.5 ⁇ m, 0.15 to 0.22 ⁇ m, 0.2 ⁇ m, 0.22 ⁇ m.
- the thickness of the membrane filter is not particularly limited, but is, for example, 120 to 180 ⁇ m and 100 to 200 ⁇ m.
- the material of the membrane filter is not particularly limited, but hydrophobic materials such as polytetrafluoroethylene (PTFE), polyvinylidene fluoride resin (PVDF), and polyester, and hydrophilic materials such as nylon and cellulose can be preferably used.
- a hydrophilic material obtained by subjecting a hydrophobic material to a hydrophilic treatment can also be suitably used as a material for a membrane filter.
- Hydrophobic materials are particularly suitable as materials for membrane filters.
- a membrane filter whose material is hydrophobic is called a hydrophobic membrane filter, and a membrane filter whose material is hydrophilic is called a hydrophilic membrane filter.
- the partial pressure of carbon dioxide (pCO 2 (%)) in the culture medium be maintained at about 5%.
- the “gas phase region” of the incubator refers to the region of the incubator that is in contact with the gas phase above the medium liquid surface during cell culture.
- the partial pressure of carbon dioxide in a culture solution is a measurement of the amount of dissolved carbon dioxide in the culture solution, and the amount of the dissolved carbon dioxide in the environment (temperature, pressure, etc.) in which the culture solution is placed. It is the concentration of carbon dioxide in the gas phase in contact with the culture solution, which is obtained from the value.
- the exchange of carbon dioxide between the culture solution and the gas phase is in equilibrium.
- the depth filter is a filter in which the internal filter medium is made of a porous material, or a filter having a three-dimensional network structure inside.
- the material of the depth filter is not particularly limited, and examples thereof include filter cloth, filter paper, porous synthetic resin, porous metal, and asbestos.
- As an example of the depth filter there is a filter manufactured by compacting glass fiber, cellulose fiber, or the like.
- a hydrophobic glass fiber laminate having a three-layer structure of polyester, glass fiber, and polyester can be suitably used as a depth filter.
- a filter with a smaller ventilation resistance per membrane area than the membrane filter is used as the depth filter.
- the minimum diameter of the pores in the porous material of the depth filter or the minimum dimension of the gap in the three-dimensional network structure is not particularly limited as long as the ventilation resistance per membrane area of the depth filter is smaller than that of the membrane filter.
- those having a pore size equal to or larger than the pore size of the membrane filter attached directly in parallel with the incubator or simultaneously with the parallel filter connector can be preferably used.
- Depth filters in which the minimum diameter in the porous material of the depth filter or the minimum dimension of the gap in the three-dimensional network structure is larger than the pore size of the membrane filter can be particularly preferably used.
- the minimum diameter of the hole of the depth filter or the minimum dimension of the gap is, for example, 0.5 to 1.5 ⁇ m, 0.8 to 1.2 ⁇ m, 0.8 to 1.0 ⁇ m, and 1.0 ⁇ m.
- the minimum diameter of the pores of the depth filter or the minimum size of the gap is, for example, 0.8 to 1.2 ⁇ m or 0.5 to 1.5 ⁇ m.
- the thickness of the depth filter in the gas permeation direction is not particularly limited as long as the ventilation resistance per membrane area of the depth filter is smaller than that of the membrane filter, but is equal to or less than the thickness of the membrane filter. Thick ones can be preferably used. Depth filters that are thicker than membrane filters can be used particularly favorably.
- the thickness of the depth filter is, for example, 210 to 800 ⁇ m and 230 to 770 ⁇ m. For example, when the thickness of the membrane filter is 120 to 180 ⁇ m, the thickness of the depth filter is 210 to 800 ⁇ m.
- Some depth filters are configured so that the pore diameter becomes smaller toward one side along the gas passage direction.
- a depth filter having such a structure is referred to as a directional depth filter.
- the filter surface on the side where the gas of the depth filter flows in at this time is called the inflow surface, and the filter surface on the side where the gas flows out is called the outflow surface.
- a directional depth filter when a directional depth filter is adopted, it is usually arranged so that the inflow surface is on the outside air side, but there is no problem even if the inflow surface is on the gas phase side of the incubator. .. Further, in the present invention, a depth filter having no directionality can also be preferably used.
- the present invention for example, when the incubator body has three openings, as shown in FIGS. 7 and 8, of two openings other than the openings used for injecting and discharging the medium or cells.
- a membrane filter can be attached to one side and a depth filter can be attached to the other side in an appropriate manner.
- the membrane filter and the depth filter can be directly attached to their openings by appropriate means such as fixing the peripheral edge portion with a heat seal, adhesive, or a ring-shaped member (FIG. 8).
- one or both of these two types of filters can be airtightly connected to the main body of the incubator in the form of a filter unit, which is a component having a filter inside (FIG. 7).
- the filter unit is a component that has a penetrating flow path and holds a filter arranged so as to divide the flow path back and forth.
- the filter unit has an opening in at least one opening of the flow path that can be airtightly connected to a corresponding opening that is a connection partner such as an incubator main body. That is, the openings forming the pair each have a corresponding form (eg, male and female threaded portions, male or female tapered fitting surfaces) that achieves an airtight connection.
- a connection partner such as an incubator main body.
- the openings forming the pair each have a corresponding form (eg, male and female threaded portions, male or female tapered fitting surfaces) that achieves an airtight connection.
- the connection partner that can be attached to the opening provided on the top surface or the side surface of the incubator body.
- the non-filter portion of the filter unit may be made of polyvinyl chloride or any other suitable synthetic resin and / or metal.
- a parallel filter connector can be used by connecting to one of the openings.
- the incubator body has only two openings, use the opening (ventilation opening) that is not for injecting / discharging the medium or cells, and use the membrane filter in the incubator body. And a depth filter can be attached.
- the incubator of the present invention is provided with a "parallel filter connector" that is airtightly connected to the ventilation opening, to which the membrane filter and depth filter are directly connected or in the form of each of these filter units. It is attached so as to be parallel to the gas phase in the incubator.
- a "parallel filter connector” is a component with an internal space having three openings, one of which is airtightly connected to the corresponding form of opening provided in the incubator body. It is configured to be.
- the other two openings of the parallel filter connector (which communicate with the opening connected to the incubator body) are directly (independent of each other) with the membrane filter on one side and the depth filter on the other side. It is attached by an airtight connection in the form of a heat seal, adhesive, etc.) or a filter unit.
- the opening of the parallel filter connector connected to the filter unit has a form corresponding to an airtight connection with the opening of the filter unit (for example, a male-threaded portion and a female-threaded portion, a male-type or female-type taper). With fitting surface).
- the overall shape of the parallel filter connector is, for example, the shape of a branch tube having two openings at the ends other than the opening connected to the incubator body, and two openings other than the opening connected to the incubator. It can be formed arbitrarily, such as a box shape or a dome shape.
- FIGS. 6 to 7 show a cap type filter unit equipped with a membrane filter and a coma type filter unit provided with a depth filter.
- these overall shapes and the shapes of the connection portions are merely those corresponding to the shapes of the openings of the connection partners shown as examples in FIGS. 6 to 7, and as long as they can correspond to the shapes of the openings of the connection partners.
- Each can be either a coma type or a cap type independently.
- the filter unit holding the membrane filter and the filter unit holding the depth filter are referred to as "membrane filter unit” and "depth filter unit", respectively.
- a parallel filter connector can be connected to one of the openings for use.
- a plurality of parallel filter connectors can be used by connecting a plurality of parallel filter connectors to a plurality of openings in the main body of the incubator.
- the parallel filter connector is a branched tubular portion as a whole, and has a main body portion and a branched portion extending from the side surface thereof.
- the main body portion has a first opening portion and a second opening portion, and the branch portion communicates with the main body portion at one end and has a third opening portion at the other end portion.
- the first opening is for connecting to the main body opening (other than the cell and medium loading / unloading) provided in the incubator, and the second opening is for connecting to the first filter unit.
- the opening and the third opening are openings for connection with the second filter unit.
- the angle between the main body and the origin of the branch is sufficient for the first filter unit and the second filter unit to perform their respective functions physically or in their functions without causing interference with each other. It is arbitrary as long as it can be exerted, and may be, for example, a right angle or another angle. Further, the inner diameters of the two flow paths of the main body portion and the branch portion may be the same or different.
- the first opening of the parallel filter connector When the first opening of the parallel filter connector is connected to the incubator body, it is horizontally oriented in the gas phase region of the incubator, depending on the arrangement of the corresponding openings (side surface, top surface) in the incubator body.
- the opening may be downward, and the second opening and the third opening may be formed in an overall shape so as to open horizontally or upward.
- the membrane filter unit is connected to one of the second opening and the third opening of the parallel filter connector, and the depth filter unit is connected to the other.
- the second opening and the first opening of the parallel filter connector are preferably provided at both ends of the main body in opposite directions.
- a membrane filter unit is preferably attached to the second opening for ventilation inside and outside the incubator in a stationary state, but the present invention is not limited to this, and a depth filter unit may be attached.
- the first to third openings of the parallel filter connector correspond to the shape of the opening of each filter unit so that they can be connected to the incubator or the filter unit, for example, female threaded portion, male threaded portion, male type or female. Has a tapered fitting surface for the mold.
- the shape of the opening for mutual connection may be a shape other than these as long as the airtight connection with each other is achieved.
- the opening at the end of the parallel filter connector and filter unit can be pushed into a flexible and elastic tube-shaped connector made of synthetic resin such as soft polyvinyl chloride, or made of other synthetic resin or metal. It may be connected via a connector such as. The same applies to the connection between the parallel filter connector and the incubator body.
- each filter unit and the incubator body or them When connecting a parallel filter connector to a membrane filter unit and / or a depth filter unit via such a connector, when the parallel filter connector is connected to the incubator body, each filter unit and the incubator body or them
- the shape of the connector can be adjusted to a linear shape, a curved shape, an L shape, or any other appropriate shape so that the filter units of the above do not physically interfere with each other.
- connection between the parallel filter connector and each filter unit via the connector may be performed by forming male and female screws that screw together at the connection site between the connector and the parallel filter connector and each filter unit. , Or welding or other appropriate fixing means may be used.
- the parallel filter connector that can be connected to the incubator body is supposed to be used in a sterile environment. Therefore, it is necessary to sterilize it before use.
- the material of all the parts is gamma ray sterilization, dry heat sterilization, high pressure steam sterilization, EOG (methylene oxide) sterilization, or low temperature gas. It must be durable against at least one such as plasma sterilization.
- Synthetic resins such as heat-resistant synthetic resins, rubber, stainless steel, etc., as long as they do not cause deformation, melting, expansion, shrinkage, alteration, deterioration, tearing, decomposition, disintegration, corrosion, ignition, explosion, etc. before and after sterilization.
- the material may be made of metal, glass, ceramics, or the like. However, the material must be able to guarantee the airtightness of each connection so that the sterility is maintained as a whole when the parallel filter connector to which the filter unit is connected is connected to the incubator.
- Parallel filter connectors can be supplied as individually packaged.
- the parallel filter connector has an internal space with three openings communicating with each other, one of which is connected to the corresponding opening provided in the body of the cell incubator. In the other two openings, one opening comprises one of two different filters such that the internal space is separated from the outside, and the other opening is a penetrating flow.
- a parallel filter connector is configured to provide a path and connect to the corresponding opening of the filter unit holding the other of the two different filters so as to separate the flow path back and forth.
- Packaged with the filter unit i.e. can be supplied as a kit. In this case, if the parallel filter connector is equipped with a membrane filter, the filter unit included in the kit holds the depth filter.
- the filter unit included in the kit holds the membrane filter.
- a lid that separates the inside and the outside of the parallel filter connector from the side of the parallel filter connector that is not equipped with one of the filter units, that is, the opening for mounting the other filter unit. It may be attached. The lid is removed when attaching the other filter unit.
- the parallel filter connector has an internal space with three openings communicating with each other, one of which is connected to the corresponding opening provided in the body of the cell incubator.
- the parallel filter connector can be packaged with the two filter units, i.e. supplied as a kit.
- a lid that separates the inside and the outside of the parallel filter connector may be attached to the opening for attaching the filter unit of the parallel filter connector. The lid is removed when the filter unit is attached.
- a membrane filter having a sufficiently large effective filtration area can be used instead of the depth filter.
- the membrane filter having a sufficiently large effective filtration area means that the aeration resistance generated in the membrane when the culture solution is discharged from the cell incubator is equal to or less than the aeration resistance generated in the depth filter. .. That is, in one embodiment of the present invention, the second opening and the third opening of the parallel filter connector have a membrane filter unit on one of them and a membrane filter having a sufficiently large effective filtration area on the other. The membrane filter unit is connected.
- a suitable example of a membrane filter having a sufficiently large effective filtration area is the LABODISC (registered trademark) disposable membrane filter unit (pore diameter 0.2 ⁇ m, effective filtration area 19.6 cm 2 , Advantech Toyo Co., Ltd.).
- Example 1 Cell culture using an incubator equipped with a depth filter CellSTACK (registered trademark) (10 chambers, Corning), which is a multi-layer incubator having two openings, has a screw cap with a tube in one opening. And a cap with a depth filter (Bacterial Air Vent 37 mm, nominal pore size 1 ⁇ m, effective filtration area 7.5 cm 2 , PALL) was attached to the other opening (incubator with depth filter).
- Bacterial Air Vent 37 mm is a depth filter with a polyester / glass fiber / polyester three-layered hydrophobic glass fiber laminated film, and the flow rate when air is passed through it at a differential pressure of 40 kPa is 40 L. / Minutes.
- CellSTACK (10 chambers) is an incubator with a 6360 cm 2 adhesive surface on which cells can adhere and proliferate.
- a suspension of dental pulp-derived cells suspended in a medium was added to this adhesive surface so that the number of cells per unit area was about 1.6 ⁇ 10 4 cells / cm 2 .
- the amount of medium at this time was 1500 mL.
- the medium used was DMEM Low Glucose (glucose concentration 5.56 mM, GE healthcare) supplemented with FBS (fetal bovine serum, GE healthcare) so that the final concentration was 10%.
- the incubator was placed in a CO 2 incubator in which the CO 2 concentration in the chamber was set to 5%, and culturing was started at 37 ° C. under moist conditions. During the culture period, the tube opening of the cap with tube was closed tightly with a clip. The experiment was performed using two incubators.
- CellSTACK (Corning) was used as the multi-layer incubator, but the same applies to other commercially available multi-layer incubators such as Cell Factory TM (Thermo Fisher SCIENTIFIC) and BioFactory TM (Wuxi NEST Biotechnology). Experiments can be performed.
- Cell Factory TM Thermo Fisher SCIENTIFIC
- BioFactory TM Wang NEST Biotechnology
- Example 2 Cell culture using an incubator equipped with a membrane filter A cap with a tube is attached to one opening of CellSTACK (10 chambers, Corning), which is a multi-layer incubator having two openings, and the other. A membrane filter (33 mm vent cap for cell stack, pore diameter 0.2 ⁇ m, Corning) was attached to the opening of the cell (incubator with membrane filter). The 33 mm vent cap for cell stack is a membrane filter made of high density polyethylene.
- the same dental pulp-derived cells used in Example 1 suspended in a medium so that the number of cells per unit area was about 1.6 ⁇ 10 4 cells / cm 2 with respect to the adhesive surface of CellSTACK (10 chambers). Suspension was added. The amount of medium at this time was 1500 mL.
- the medium used was DMEM Low Glucose (glucose concentration 5.56 mM, GE healthcare) supplemented with FBS (fetal bovine serum) (GE healthcare) to a final concentration of 10%.
- the incubator was placed in a CO 2 incubator in which the CO 2 concentration in the chamber was set to 5%, and culturing was started at 37 ° C. under moist conditions. During the culture period, the tube opening of the cap with tube was closed tightly with a clip. The experiment was performed using 4 incubators.
- Example 3 Measurement of carbon dioxide partial pressure and pH of the medium
- the start of the culture was set to Day 0, and 2 days after the start of the culture (Day 2), 4 days after the start of the culture (Day 4), and 5 of the same.
- the measurement was performed according to the instruction manual of Bioprofile Fox. Since the measured values of carbon dioxide partial pressure (pCO 2 (%)) and pH change greatly depending on the temperature of the measured sample, the measured sample is constant depending on the heat source in the pH / PCO 2 / PO 2 analyzer Bioprofile Fox. The temperature was maintained at the above temperature for measurement, and the set temperature was set to 37 ° C. The measurement was performed on all the incubators used in the experiment, and the average of the measured values was calculated.
- the carbon dioxide partial pressure measures the amount of dissolved carbon dioxide in the culture solution, and is obtained from the measured value of the amount of dissolved carbon dioxide in the environment (temperature, pressure, etc.) where the culture solution is placed. It is the concentration of carbon dioxide in the gas phase that comes into contact with.
- the pH of the measurement results of pCO 2 (%) of the medium in the cell culture of Example 1 (using an incubator with a depth filter) and the cell culture of Example 2 (using an incubator with a membrane filter) is shown in FIG.
- the measurement results of are shown in FIG. 2, respectively.
- the pCO 2 (%) of the medium cultured using the incubator with the depth filter and the medium cultured using the incubator with the membrane filter was about 5%, which are almost the same. rice field.
- the pCO 2 (%) of the medium continued to rise, reaching about 9% on Day 6.
- the pCO 2 (%) of the medium increased slightly, but it was about 6% even on Day 6.
- the pH of the medium cultivated using the incubator with a depth filter and the medium cultivated using the incubator with a membrane filter were about 7.6, which were almost the same.
- the pH of the medium cultivated using the incubator with a depth filter was lower than that of the medium cultivated using the incubator with a membrane filter, and on Day 6, the former The pH was about 7.23, and the pH of the latter was about 7.40.
- a correlation was found between the pCO 2 (%) and pH values of the medium, and the pH decreased as the pCO 2 (%) of the medium increased. This is because some of CO 2 forms carbonate ions and the like in an aqueous solution.
- the CO 2 concentration in the gas phase in the incubator should be about 5%. Need to be maintained.
- the gas phase in the incubator is between the gas phase in the CO 2 incubator and the gas phase in the CO 2 incubator because the oxygen contained in the gas phase is consumed by the cells and the CO 2 produced by the cells is released from the liquid surface of the medium. If gas exchange (static gas exchange) is not sufficiently performed, the CO 2 concentration in the gas phase will increase, and the increase in pCO 2 (%) of the medium in equilibrium with this will not be prevented.
- the pCO 2 (%) in the medium during the culturing period is maintained at 5 to 6%.
- pCO 2 (%) in the medium increased to about 9% during the culturing period. It is considered that this is because the gas exchange between the gas phase in the CO 2 incubator and the gas phase in the incubator, at least the carbon dioxide gas exchange, was not sufficiently performed by the depth filter.
- the depth filter is suitable as a filter that can ensure sufficient gas exchange between the space inside the incubator and the space inside the CO 2 incubator. It shows that it is necessary to use a membrane filter.
- Example 4 Medium recovery operation In the cell culture of Examples 1 and 2, 6 days after the start of culture, the incubator was taken out from the CO 2 incubator chamber, the tube clip was removed, and the end of the tube was used for medium recovery. Connected to the container.
- the incubator with a depth filter of Example 1 was tilted and lifted, and the medium was discharged into a container for collecting the medium by natural flow and collected. It was possible to drain the medium from the incubator at a rate of approximately 290 mL / min (calculated by dividing the total amount of the medium by the time spent on the solution).
- the incubator with a membrane filter of Example 2 when the medium was discharged from the incubator in the same manner, the incubator cracked, so that it was practically impossible to discharge the medium by natural flow. It was possible.
- the gas phase volume in the incubator increases by the amount of the discharged liquid. Therefore, if the same volume of outside air does not flow into the incubator, the inside of the incubator is in a depressurized state, and pressure from the outside acts on the outer wall of the incubator.
- the cause of the damage in the incubator with the membrane filter is that it is not possible to inflow the outside air at the above-mentioned natural flow medium discharge rate through the membrane filter, so the inside of the incubator becomes excessively negative pressure and the outside It is considered that a large load due to the pressure was applied to the incubator and the incubator was distorted beyond the limit.
- the membrane filter is not suitable as a filter to be attached to the incubator, and the depth filter is suitable from the viewpoint of aseptic and smooth recovery of the medium and prevention of damage to the incubator.
- Example 5 Evaluation of an incubator equipped with both a depth filter and a membrane filter Based on the above results, a parallel filter having both of them attached to the opening of the incubator main body to which the depth filter or the membrane filter was attached.
- a parallel filter having both of them attached to the opening of the incubator main body to which the depth filter or the membrane filter was attached.
- the evaluation of the incubator equipped with both the depth filter and the membrane filter was different from Examples 1 and 2, and the incubator to which only the medium was added without using cells was used with these filters attached. gone.
- CellSTACK (10 chambers, Corning), which is a multi-layer incubator with two openings, has DMEM Low Glucose (glucose concentration 5.56 mM, GE healthcare) and FBS (fetal bovine serum) (GE healthcare), respectively. The medium was added so that the final concentration was 10%, and 1500 mL each was added. Next, a cap with a tube was attached to one of the openings of each CellSTACK and connected to another container. In the other opening, (i) Depth filter (Bacterial Air Vent 37 mm, nominal hole diameter 1 ⁇ m, cap with PALL), (ii) Membrane filter (33 mm vent cap for cell stack, hole diameter 0.2), respectively. ⁇ m, Corning), or (iii) A parallel filter connector in which both the depth filter and the membrane filter are connected was attached.
- the incubator to which the depth filter is attached, the incubator to which the membrane filter is attached, and the incubator to which the parallel filter connector to which both the depth filter and the membrane filter are attached are connected are the first incubator and the first incubator, respectively. It is called a second incubator and a third incubator.
- CellSTACK was stored in a wet CO 2 incubator with the CO 2 concentration in the refrigerator set to 5%.
- a 30 mL syringe (with lock, Terumo) that was sterile-bonded to the tube of the cap with tube at 0 hours, 1 hour, 3 hours, 18 hours, 21 hours, and 42 hours after storage. ) was used to sample 5 mL of the medium, and the pH / PCO 2 / PO 2 analyzer Bioprofile Fox (Nova Biomedical) was used to measure the carbon dioxide partial pressure (pCO 2 ) and pH of the medium. The measurements were generally performed according to the Bioprofile Fox instruction manual.
- the measured sample is constant depending on the heat source in the pH / PCO 2 / PO 2 analyzer Bioprofile Fox.
- the temperature was maintained at the above temperature for measurement, and the set temperature was set to 37 ° C.
- the measurement results of pCO 2 (%) of the medium added to the first to third incubators are shown in FIG. 3, and the measurement results of pH are shown in FIG. 4, respectively.
- pCO 2 (%) decreased and pH increased by 2 hours. It is considered that this is because the CO 2 contained in the medium was degassed after the incubator was allowed to stand in the incubator.
- pCO 2 (%) increased and the pH decreased, which was caused by CO 2 from the outside air (gas phase in the incubator) through the membrane filter. It is probable that was supplied.
- the CellSTACK was taken out from the incubator, a container for collecting the medium was connected to the cap with a tube attached to the CellSTACK, and the medium was discharged by natural flow.
- the first incubator at a rate of about 290 mL / min (calculated by dividing the total amount of medium by the time spent on the solution), and in the third incubator, at a rate of about 280 mL / min, respectively. While it was possible to drain the medium, in the second incubator equipped with only the membrane filter, the inside of the incubator was decompressed when the medium was drained, and it can be visually confirmed on the incubator body. Distortion and breakage occurred, and it was impossible to discharge the medium normally.
- FIG. 5 shows a schematic cross-sectional view of the parallel filter connector used in the fifth embodiment.
- the parallel filter connector (1) is a branched tubular as a whole and has a first opening (3), a second opening (4), and a third opening (5).
- the parallel filter connector (1) includes a main body portion (1a) and a branch portion (2) provided in the middle of the side wall of the main body portion.
- the branch portion (2) communicates with the inside of the main body portion (1a).
- the main body portion (1a) has a first opening portion (3) for connecting the main body portion (1a) to the opening portion of the incubator main body, and a second opening portion (4) for attaching a membrane filter.
- the first opening (3) is provided with a female thread (6) for hermetically screwing the parallel filter connector to the opening of the incubator body.
- the second opening (4) is provided with a male screw portion (7) for hermetically screwing the membrane filter unit.
- the third opening (5) at the branch (2) is female so that it can be airtightly fitted to the depth filter unit (which has a male tapered fitting surface for connection). It has a tapered fitting surface.
- FIG. 6 shows a schematic cross-sectional view of the parallel filter connector (1) attached to the incubator main body (10) used in Example 5.
- the parallel filter connector (1) is provided in the first main body opening (8) in which the female screw portion (6) provided in the first opening (3) is provided in the incubator main body (10). It is airtightly connected to the incubator body (10) by being screwed into the male screw part (29).
- the structure of the incubator body (10) as a multi-layer incubator is omitted.
- the membrane filter unit (9) is airtightly connected to the second opening (4) of the parallel filter connector (1).
- the membrane filter unit (9) is a flat cylindrical lid, and the membrane filter (9a) is attached to the opening provided on the top surface thereof, through which the outside air and the parallel filter connector are connected.
- the gas phase in (1) and then the gas phase in the incubator body (10) can be distributed.
- the airtight connection between the parallel filter connector (1) and the membrane filter unit (9) is the female screw portion (11) provided in the lower opening of the membrane filter unit (9) and the parallel filter connector (1). It is made by screwing with a male screw portion (7) provided in the second opening (4) of the above.
- the depth filter unit (12) is airtightly connected to the third opening (5) of the parallel filter connector (1).
- the depth filter unit (12) is a coma type, has a depth filter (12a) in the flow path, has one opening (13a and 13b) at the top and bottom, and an opening at the lower end. Complementary fitting surface whose outer shape is tapered toward the portion (13b) and narrows downward toward the inside of the third opening (5) of the parallel filter connector (1). It is tightly fitted with a good fitting surface. Through this depth filter (12a), the outside air, the gas phase in the parallel filter connector (1), and then the gas phase in the incubator body (10) can be distributed.
- a cap with a tube (16) is airtightly connected to the opening (14) of the second main body of the incubator.
- the tube (17) of the cap (16) with a tube extends through the top surface of the cap and communicates the inside and the outside of the incubator body (10).
- the connection between the second main body opening (14) and the cap with tube (16) of the incubator is made to the male screw part (15) and the cap with tube (16) provided in the second main body opening (14). It is made by screwing with the provided female threaded portion (18).
- the opening at the outer end of the tube (17) is closed by clipping during cell culture.
- the medium can also be drained by hanging the tube (17).
- FIG. 7 shows another embodiment of the incubator.
- the incubator body (19) comprises a first body opening (20), a second body opening (21), and a third body opening (22), the first opening (20). ),
- the membrane filter unit (9) is attached, and the depth filter unit (12) is attached to the second opening (21).
- the first opening (20) is provided with a male thread for connecting the membrane filter unit (9)
- the second opening (21) is a female type for connecting the depth filter unit (12).
- the one provided with the tapered fitting surface is shown as an example.
- the form of these connecting portions can be selected according to various forms that the connecting portion of each filter unit can take.
- the incubator (19) shown in FIG. 7 has a third body opening (22), which is similar to that shown as the second body opening (14) in FIG. It is an opening for injection and discharge, and similarly, a cap (16) with a tube (17) is airtightly connected.
- the form of the connecting portion of the third opening (22) can also be selected according to various forms that the connecting portion of the cap with a tube can take.
- FIG. 8 shows a further embodiment of the present invention.
- the membrane filter and the depth filter are integrally attached to the incubator (24) as a part thereof.
- both the membrane filter (27) and the depth filter (28) are in parallel so that gas can be exchanged between the internal gas phase and the outside air. It is attached to (24).
- the opening (25) of the incubator (24) is an opening for injecting and draining cells and medium similar to that shown as the second opening (14) in FIG. 26) is provided, and the cap (16) with the tube (17) is airtightly connected in the same manner.
- the form of the connection portion of the opening (25) can also be selected according to various forms that the connection portion of the cap with a tube can take.
- the present invention it is possible to prevent deformation such as swelling and denting of the incubator and damage to the incubator due to the deformation caused during the work of exchanging the medium in the incubator, and to prevent the accumulation of carbon dioxide gas in the incubator. It is possible to provide a cell incubator having the advantage of being able to prevent and maintain the pH of the medium in an appropriate range during the culture period. Further, the parallel filter connector of the present invention is used as a means for updating the incubator having the same advantages as described above even if the incubator body has only one gas exchange opening. be able to.
Abstract
Description
従って本発明は,細胞の出し入れや培地交換の操作における培養器の変形を防止し且つ細胞培養中における経時的な炭酸ガス濃度上昇や培地のpH低下を防止できる,という利点を備えた細胞培養器の提供を目的とする。
(1)該内部空間を外部と区切るように,2種の異なるフィルターの一方又は他方をそれぞれ備えるか,
(2)一方の開口部が,該内部空間が外部と区切られるように2種の異なるフィルターの一方を備え,他方の開口部が,貫通した流路を備え該流路を前後に区切るように該2種の異なるフィルターの他方を保持したフィルターユニットの対応する開口部と接続されるように構成されているか,又は
(3)貫通した流路を備え該流路を前後に区切るように2種の異なるフィルターの一方又は他方をそれぞれ保持した2つのフィルターユニットの対応する開口部とそれぞれ接続されるように構成されているものである,
並列フィルター接続器。
(1)該2種の異なるフィルターの一方を備えた並列フィルター接続器,及び該2種の異なるフィルターの他方を備えたフィルターユニットを含むキット;
(2)並列フィルター接続器,該2種の異なるフィルターの一方を備えたフィルターユニット,及び該2種の異なるフィルターの他方を備えたフィルターユニットを含むキット。
(1)培養器に培地及び細胞を添加するための注入口,並びに培養器から培地及び細胞等を排出させるための排出口。
(2)培養器内部を汚染することなく内部の気相と外気との間での気体の交換を行わせる通気口。
2つの開口部を有する多層培養器であるCellSTACK(登録商標)(10チャンバー,Corning社)の一方の開口部にチューブ付きねじキャップを取り付け,もう一方の開口部にデプスフィルター(Bacterial Air Vent 37 mm,公称孔径1 μm,有効ろ過面積7.5 cm2,PALL社)を備えたキャップを取り付けた(デプスフィルター付き培養器)。Bacterial Air Vent 37 mmは,ポリエステル/グラスファイバー/ポリエステルの三層構造の疎水性のグラスファイバーラミネート膜を有するデプスフィルターであり,これに差圧40 kPaで空気を通過させたときの流量は40 L/分である。CellSTACK(10チャンバー) は,細胞が接着,増殖することのできる6360 cm2の接着面を有する培養器である。この接着面に対し単位面積当たりの細胞数が約1.6×104 個/cm2となるように,培地に懸濁させた歯髄由来細胞の懸濁液を加えた。このときの培地の量は1500 mLとした。培地には,DMEM Low Glucose(グルコース濃度5.56 mM,GE healthcare社)にFBS (ウシ胎児血清,GE healthcare社) を終濃度が10%となるように添加したものを用いた。培養器を庫内のCO2濃度を5%に設定したCO2インキュベーター内に静置し,湿潤条件下,37℃で培養を開始した。培養期間中,チューブ付きキャップのチューブの開口部はクリップで気密に閉じた。実験は2個の培養器を用いて行った。
2つの開口部を有する多層培養器であるCellSTACK(10チャンバー,Corning社)の一方の開口部にチューブ付きキャップを取り付け,もう一方の開口部にメンブレンフィルター(セルスタック用33 mmベントキャップ,孔径0.2 μm,Corning社)を取り付けた(メンブレンフィルター付き培養器)。セルスタック用33 mmベントキャップは,材質が高密度ポリエチレンであるメンブレンフィルターである。CellSTACK(10チャンバー)の接着面に対し単位面積当たりの細胞数が約1.6×104 個/cm2となるように,培地に懸濁させた実施例1で用いたのと同じ歯髄由来細胞の懸濁液を加えた。このときの培地の量は1500 mLとした。培地には,DMEM Low Glucose(グルコース濃度5.56 mM,GE healthcare社)にFBS(ウシ胎児血清)(GE healthcare社) を終濃度が10%となるように添加したものを用いた。培養器を庫内のCO2濃度を5%に設定したCO2インキュベーター内に静置し,湿潤条件下,37℃で培養を開始した。培養期間中,チューブ付きキャップのチューブの開口部はクリップで気密に閉じた。実験は4個の培養器を用いて行った。
実施例1及び2の細胞培養において,培養開始時をDay0とし,そして培養開始2日後(Day2),同4日後(Day4),同5日後(Day 5),及び同6日後(Day6)として,Day2,及びDay4~Day6のそれぞれの時点で,チューブ付きキャップのチューブに無菌接合した30 mLシリンジ(ロック付,テルモ社)を用いて培地を5 mLサンプリングし,pH/PCO2/PO2分析装置バイオプロファイル フォックス(登録商標)(ノバ・バイオメディカル社) を用いて培地の二酸化炭素分圧(pCO2(%))及びpHを測定し,これらの値の経時変化を観察した。測定はバイオプロファイル フォックス の取扱説明書に準じて実施した。二酸化炭素分圧(pCO2(%))及びpHの測定値は,測定サンプルの温度に依存して大きく変化するため,pH/PCO2/PO2分析装置バイオプロファイル フォックス では測定サンプルが熱源により一定の温度に保持されて測定が行われるが,その設定温度は37℃に設定した。測定は,実験に供した全ての培養器について行い,測定値の平均を求めた。なお,二酸化炭素分圧は,培養液の溶存二酸化炭素量を測定し,その培養液が置かれた環境(温度,気圧等)において,その溶存二酸化炭素量の測定値から求められる,その培養液と接する気相の二酸化炭素の濃度のことである。
実施例1及び2の細胞培養において,培養開始6日後に,CO2インキュベーター庫内から培養器を取り出し,チューブのクリップを取り外してチューブの末端を培地回収用の容器に接続した。
以上の結果は,培地の無菌的かつ円滑な回収と培養器破損防止の観点から,培養器に取り付けるフィルターとして,メンブレンフィルターは不適当であり,デプスフィルターが好適であることを示している。
上記の結果に基づき,デプスフィルター又はメンブレンフィルターを取り付けていた培養器本体の開口部に,それらの両方を取り付けた並列フィルター接続器を接続した培養器を準備し,メンブレンフィルターとデプスフィルターの欠点を互いに補完することができるかを検証した。この培養器については実施例6において詳説する。なお,デプスフィルター及びメンブレンフィルターの両方を取り付けた培養器の評価は,実施例1及び2と異なり,細胞を用いずに培地のみを加えた多層培養器に,これらフィルターを取り付けたものを用いて行った。
図5に,実施例5で用いた並列フィルター接続器の模式的断面図を示す。並列フィルター接続器(1)は全体として分岐管状であり,第1の開口部(3),第2の開口部(4),及び第3の開口部(5)を有する。並列フィルター接続器(1)は,本体部(1a)と本体部の側壁の途中に設けられた分岐部(2)を含んでなる。分岐部(2)は本体部(1a)の内部と連通している。本体部(1a)は,これを培養器本体の開口部に接続するための第一の開口部(3)と,メンブレンフィルターを取り付けるための第二の開口部(4)とを有する。第一の開口部(3)には,並列フィルター接続器を培養器本体の開口部に気密に螺着するための雌ねじ部 (6)が設けられている。第二の開口部(4)には,メンブレンフィルターユニットを気密に螺着するための雄ねじ部 (7)が設けられている。分岐部(2)にある第3の開口部(5)は,デプスフィルターユニット(接続のための雄型のテーパ状嵌合面を備える)に気密に嵌合させることができるよう,雌型のテーパ状嵌合面を備えている。
図6に,実施例5で用いた培養器本体(10)に取り付けられた状態の並列フィルター接続器(1)の模式的断面図を示す。並列フィルター接続器(1)は,その第一の開口部(3) に設けられた雌ねじ部 (6)が培養器本体(10)に備えられた第一の本体開口部(8)に備えられた雄ねじ部 (29)と螺合されることにより,培養器本体(10)と気密に接続されている。なお,図において,培養器本体(10)の内部の多層培養器としての構造は省略されている。
図7に,培養器の別の実施例を示す。培養器本体(19) は,第一の本体開口部(20),第二の本体開口部(21),及び第三の本体開口部(22)を備えており,第一の開口部(20)にメンブレンフィルターユニット(9)が,第二の開口部(21)にデプスフィルターユニット(12)が取り付けられている。図では第一の開口部(20)はメンブレンフィルターユニット(9)を接続させるための雄ねじ部を備え,第二の開口部(21)はデプスフィルターユニット(12)を接続させるための雌型のテーパ状嵌合面を備えたものが例として示されている。但し,これらの接続部の形態は,各フィルターユニットの接続部がとり得る種々の形態に対応して選択することができる。
図8に本発明の更なる実施例を示す。本実施例において,メンブレンフィルター及びデプスフィルターは,培養器(24)にその一部として一体に取り付けられている。培養器(24)には,内部の気相と外気との間でのガス交換がそれぞれで可能なように,メンブレンフィルター(27)とデプスフィルター(28)の両方が並列の関係で培養器本体(24)に取り付けられている。培養器(24)の開口部(25)は,図6において第二の開口部(14)として示したのと同様の,細胞及び培地の注入及び排出のための開口部であり,雄ねじ部(26)を備え,同様にしてチューブ(17)付きキャプ(16)が気密に接続されている。この開口部(25)は接続部の形態も,チューブ付きキャップの接続部がとり得る種々の形態に応じて選択することができる。
1a 本体部
2 分岐部
3 第一の開口部
4 第二の開口部
5 第三の開口部
6 雌ねじ部
7 雄ねじ部
8 第一の本体開口部
9 メンブレンフィルターユニット
9a メンブレンフィルター
10 培養器本体
11 雌ねじ部
12 デプスフィルターユニット
12a デプスフィルター
13a 開口部
13b 開口部
14 第二の本体開口部
15 雄ねじ部
16 チューブ付きキャップ
17 チューブ
18 雌ねじ部
19 培養器本体
20 第一の本体開口部
21 第二の本体開口部
22 第三の本体開口部
23 係止ネジ
24 培養器
25 開口部
26 雄ねじ部
27 メンブレンフィルター
28 デプスフィルター
29 雄ねじ部
Claims (24)
- 細胞培養器であって,該細胞培養器の内側の気相と外側の気相との間をそれぞれが画するよう並列に,異なる2種のフィルターを備えるものである,細胞培養器。
- 該2種のフィルターの少なくとも一方が,貫通した流路を備え該流路を前後に区切るように該フィルターを保持したものであるフィルターユニットの形で備えられ,該フィルターユニットは該流路の片側の開口部において,該細胞培養器の本体の気相領域に設けられた対応する開口部と接続されているものである,請求項1に記載の細胞培養器。
- 該2種のフィルターの各々が,貫通した流路を備え該流路を前後に区切るように該フィルターを保持したものであるフィルターユニットの形で備えられ,該フィルターユニットの各々は該流路の片側の開口部において,該細胞培養器の本体の気相領域に設けられた対応する開口部と接続されているものである,請求項1に記載の細胞培養器。
- 該2種のフィルターの各々が,互いに連通する3つの開口部を有する内部空間を備えた並列フィルター接続器の該3つの開口部のうち2つを通る並列な流路の各々を前後に区切るように,それぞれ備えられており,該並列フィルター接続器が,残りの開口部において,該細胞培養器の本体の気相領域に設けられた対応する開口部と接続されているものである,請求項1に記載の細胞培養器。
- 該2種のフィルターの少なくとも一方が,貫通した流路を備え該流路を前後に区切るように該フィルターを保持したものであるフィルターユニットの形で備えられており,該フィルターユニットは該流路の片側の開口部において,該並列フィルター接続器に設けられた対応する開口部と接続されているものである,請求項4に記載の細胞培養器。
- 該2種のフィルターの各々が,貫通した流路を備え該流路を前後に区切るように該フィルターを保持したものであるフィルターユニットの形で備えられており,該フィルターユニット各々は,該流路の片側の開口部において,該並列フィルター接続器に設けられた対応する開口部と接続されているものである,請求項4に記載の細胞培養器。
- 該フィルターユニットと該細胞培養器の本体が,相互に接続される対となる開口部に,対応する雄ねじ部と雌ねじ部又は対応する雄型及び雌型のテーパ付き嵌合面をそれぞれ備えるものである,請求項2又は3に記載の細胞培養器。
- 該細胞培養器の本体と該並列フィルター接続器が,相互に接続される対となる開口部に,対応する雄ねじ部と雌ねじ部又は対応する雄型及び雌型のテーパ付き嵌合面をそれぞれ備えるものである,請求項4に記載の細胞培養器。
- 該フィルターユニットと該細胞培養器の本体,及び該並列フィルター接続器が,相互に接続される対となる開口部に,対応する雄ねじ部と雌ねじ部又は対応する雄型及び雌型のテーパ付き嵌合面をそれぞれ備えるものである,請求項5又は6に記載の細胞培養器。
- チューブ付きキャップが取り付けられた開口部が本体に更に設けられているものである,請求項1~9の何れかに記載の細胞培養器。
- 該並列フィルター接続器が,該3つの開口部を各末端に備えた全体として分岐管状の形態である,請求項4~6,8,及び9の何れかに記載の細胞培養器。
- 該2種のフィルターの一方がメンブレンフィルターであり他方がデプスフィルターである,請求項1~11の何れかに記載の細胞培養器。
- 該メンブレンフィルターの厚さが100~200μmであり,該デプスフィルターの厚さが210~800μmである,請求項12に記載の細胞培養器。
- 該メンブレンフィルターの厚さが120~180μmであり,該デプスフィルターの厚さが,230~770μmである,請求項12に記載の細胞培養器。
- 該細胞培養器の素材が合成樹脂である,請求項1~14の何れかの細胞培養器。
- 該細胞培養器の素材が,ポリカーボネート樹脂,ポリエステル樹脂,ポリスチレン樹脂,及びアクリル樹脂からなる群から選択されるものである,請求項1~14の何れかの細胞培養器。
- 細胞培養器の本体に接続されるための並列フィルター接続器であって,互いに連通する3つの開口部を有する内部空間を備え且つ該3つの開口部のうちの1つが,該細胞培養器の本体に設けられた対応する開口部と接続されるように構成されており,他の2つの開口部が,
(1)該内部空間を外部と区切るように,2種の異なるフィルターの一方又は他方をそれぞれ備えるか,
(2)一方の開口部が,該内部空間が外部と区切られるように2種の異なるフィルターの一方を備え,他方の開口部が,貫通した流路を備え該流路を前後に区切るように該2種の異なるフィルターの他方を保持したフィルターユニットの対応する開口部と接続されるように構成されているか,又は
(3)貫通した流路を備え該流路を前後に区切るように2種の異なるフィルターの一方又は他方をそれぞれ保持した2つのフィルターユニットの対応する開口部とそれぞれ接続されるように構成されているものである,
並列フィルター接続器。 - 該細胞培養器の本体の開口部と接合される開口部に,該細胞培養器の本体の開口部に対応する雄ねじ部若しくは雌ねじ部又は雄型若しくは雌型のテーパ付き嵌合面を備えるものである,請求項17に記載の並列フィルター接続器。
- 該並列フィルター接続器が,該3つの開口部を各末端に備えた全体として分岐管状の形態である,請求項17又は18に記載の並列フィルター接続器。
- 該2種のフィルターの一方がメンブレンフィルターであり他方がデプスフィルターである,請求項17~19の何れかに記載の並列フィルター接続器。
- 該メンブレンフィルターの厚さが100~200μmであり,該デプスフィルターの厚さが210~800μmである,請求項20に記載の並列フィルター接続器。
- 該メンブレンフィルターの厚さが120~180μmであり,該デプスフィルターの厚さが,230~770μmである,請求項21に記載の並列フィルター接続器。
- 該3つの開口部のうちの1つ又は2つに該フィルターユニットが接続されているものである,請求項17~22の何れかに記載の並列フィルター接続器。
- 請求項23に記載の並列フィルター接続器を組み立てるための,以下の(1)又は(2)のキット:
(1)該2種の異なるフィルターの一方を備えた並列フィルター接続器,及び該2種の異なるフィルターの他方を備えたフィルターユニットを含むキット;
(2)並列フィルター接続器,該2種の異なるフィルターの一方を備えたフィルターユニット,及び該2種の異なるフィルターの他方を備えたフィルターユニットを含むキット。
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JP2008541763A (ja) * | 2005-06-01 | 2008-11-27 | アイアールエム・リミテッド・ライアビリティ・カンパニー | 自動処理のための細胞培養フラスコ、システム及び方法 |
US20090298164A1 (en) | 2008-05-30 | 2009-12-03 | Cattadoris Henry J | Assembly of cell culture vessels |
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US20240076600A1 (en) | 2024-03-07 |
JPWO2022149606A1 (ja) | 2022-07-14 |
EP4276166A1 (en) | 2023-11-15 |
CN117203316A (zh) | 2023-12-08 |
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