WO2015037468A1 - 培養システム、及び培養方法 - Google Patents
培養システム、及び培養方法 Download PDFInfo
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- WO2015037468A1 WO2015037468A1 PCT/JP2014/072975 JP2014072975W WO2015037468A1 WO 2015037468 A1 WO2015037468 A1 WO 2015037468A1 JP 2014072975 W JP2014072975 W JP 2014072975W WO 2015037468 A1 WO2015037468 A1 WO 2015037468A1
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
- C12M47/02—Separating microorganisms from the culture medium; Concentration of biomass
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- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/08—Bioreactors or fermenters specially adapted for specific uses for producing artificial tissue or for ex-vivo cultivation of tissue
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/28—Constructional details, e.g. recesses, hinges disposable or single use
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/34—Internal compartments or partitions
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- 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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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
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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
- C12M35/06—Magnetic means
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/48—Automatic or computerized control
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
Definitions
- the present invention relates to a culture system and a culture method for performing cell culture using dropping of a solution.
- Adherent cells such as somatic cells adhere to the bottom surface of the culture vessel, form a scaffold, and then repeat cell division and cell elongation to increase the number of cells. At that time, since the cells remain attached to the bottom surface of the culture container, when the number of cells continues to increase, the cells compete for the adhesive surface on the bottom surface of the container. Therefore, if the number of cells continues to increase, there will be no gaps between cells, eventually cells will be stratified, cells will suffocate, and nutrients will not spread sufficiently (confluent state), resulting in dead cells .
- the cell adhesion protein is degraded with an enzyme solution such as trypsin to float the adherent cells, or the adherent cells are physically removed from the culture container with a scraper. It is necessary to peel off.
- trypsin is known to be toxic to cells, and it is known that trypsin treatment changes the properties of cells and generates dead cells. Therefore, it is required to reduce the number of processes for applying stress to these cells as much as possible.
- the culture solution becomes a large volume (several hundred ml), it is required to automatically and efficiently perform cell culture without manually moving the solution.
- An object of the present invention is to provide a culture system and method capable of automating cell culture by dispersing cells such as adherent cells in a solution and controlling movement of the solution in which the cells are dispersed. .
- the present inventor uses adherent cell masses when attaching adherent cells, or attaches adherent cells to magnetic particles or a carrier that adsorbs particles. From the seeding to collection of cells without stressing the cells more by making the solution dispersible in the solution and moving the solution into the culture vessel by drop transfer or moving the solution out of the culture vessel Has been successfully performed in a sterile state and automatically, and the present invention has been completed. That is, the present invention is as follows.
- a plurality of storage containers for storing cells and solutions, pipe lines connecting the plurality of storage containers, an opening / closing mechanism for opening and closing the pipe lines, and dropping cells and solutions between the plurality of storage containers
- a culture system provided with a head giving mechanism which gives a head among a plurality of above-mentioned storage containers.
- the culture system according to (1) further including a first holding unit that holds the plurality of storage containers.
- the drop providing mechanism provides a drop to at least one of the plurality of storage containers by moving the first holding unit.
- the plurality of storage containers include one or a plurality of culture containers.
- the drop providing mechanism provides a drop between the storage container and the cylinder or bellows container in order to drop and transfer cells and solutions between the storage container and the cylinder or bellows container.
- System. (12) The culture system according to (11), wherein the first holding unit and the second holding unit are detachable. (13) The culture system according to any one of (1) to (12), wherein the storage container includes a temperature control unit. (14) The culture system according to any one of (1) to (13), wherein the storage container includes a carbon dioxide supply unit. (15) The culture system according to any one of (1) to (14), wherein the storage container includes a vent. (16) The culture system according to any one of (1) to (15), wherein the container is disposable.
- a control unit for controlling the opening / closing mechanism and the drop applying mechanism is provided, and the control unit controls the opening / closing mechanism and the drop applying mechanism according to a predetermined procedure to automatically perform cell culture and solution movement.
- the culture system according to any one of (1) to (19), wherein:
- the method according to (22), wherein the step of treating the solution is a step of discarding the solution or supplying a solution.
- cell culture can be performed while automatically controlling the position of the cells so that the cells can absorb nutrients without applying stress to the cells.
- the cells cultured by the culture system and culture method of the present invention are not limited to adherent cells, and may be floating cells.
- adherent cells can be dispersed in a solution by using adherent cell masses, or adherent cells are adsorbed to magnetic particles or magnetic particles (fiber aggregate or porous solid material). ) Is allowed to disperse in the solution. This allows adherent cells to move with the solution and to automate culture control using drop transfer.
- the culture system 1000 includes a main stage 100 (first holding unit) that performs cell culture, a drop applying mechanism 200 that tilts the main stage 100, and a substage 300 (second holding unit) that can be connected to the main stage 100. Composed.
- the main stage 100 can be moved between a horizontal state and a vertical state by the drop applying mechanism 200.
- the main stage 100 is provided with a pre-culture vessel 110 made of resin and having a flat culture space, and a main culture vessel 120 made of resin and having a flat culture space.
- the capacity of the preculture container 110 is smaller than the capacity of the main culture container 120.
- the capacity of the preculture container 110 can be 10 to 30 ml, and the capacity of the preculture container 110 can be 100 to 300 ml.
- Each culture vessel can be disposable.
- the shape of each culture container was made into the flat cube, it is not limited to this, It can also be set as arbitrary shapes, such as a column shape and the shape where the cone was connected to the plane of the column.
- the inner surface of each culture vessel is preferably subjected to a surface treatment so that adherent cells do not adhere.
- the pre-culture container 110 includes a gas supply unit 111 that supplies CO 2 gas to the inside of the container, an aeration filter 112 for appropriately managing the pressure inside the container, and a temperature adjustment unit 113 that adjusts the solution temperature inside the container. And an introduction port 114 for introducing a solution, a cell, or the like into the container.
- the gas supply unit 111 and the aeration filter 112 are connected to the preculture vessel 110 by a flexible resin connection tube (pipe). Further, the preliminary culture vessel 110 and the main culture vessel 120 are also connected by a connection tube made of flexible resin. Each connecting tube is provided with valves 171 and 172.
- the valve 173 provided in the tube between the pre-culture vessel 110 and the main culture vessel 120 can be a check valve.
- the inlet 114 is closed with a cap.
- the main culture container 120 includes a gas supply unit 121 for supplying CO 2 gas to the inside of the container, a ventilation filter 122 for appropriately managing the pressure inside the container, and the solution temperature inside the container to a temperature suitable for culture.
- a temperature adjustment unit 123 for adjustment and an introduction port 124 for introducing a solution, a cell, or the like into the container are provided.
- the gas supply unit 121 and the main culture vessel 120 are connected by a connection tube made of a flexible resin having a valve 174.
- the aeration filter 122 and the main culture vessel 120 are connected by a connection tube made of a flexible resin having a valve 175.
- the inlet 124 is closed with a cap.
- the gas supply units 111 and 121 supply carbon dioxide and humidity gas at concentrations necessary for cell culture provided from a CO 2 gas cylinder (not shown) to the culture container.
- gas conditions with a carbon dioxide concentration of 5%, a humidity of 95%, and a temperature of 37% can be used for cell culture.
- the temperature control units 113 and 123 are preferably temperature management devices such as a thermal cycler, film heaters (planar heating elements), or Peltier elements that can be cooled and heated, but are not limited thereto.
- the temperature control unit 113 or 123 may be provided on both the upper and lower surfaces of the preliminary culture vessel 110 or the main culture vessel 120, or may be provided on the upper surface.
- the main culture container 120 is connected to a sorting container 130 for sorting cells cultured in the main culture container 120 and a cell capture unit 150.
- the sorting container 130 is a bottle-shaped container.
- the sorting container 130 is connected to a ventilation filter 132 for appropriately managing the pressure inside the container.
- a valve 177 is provided in the connection tube between the sorting container 130 and the ventilation filter 132.
- the cell capturing unit 150 includes a filter block 151.
- the filter block 151 captures cells in the solution sent from the main culture vessel 120, and the solution from which the cells are removed is sent to the substage 300.
- the main stage 100 is formed with a plurality of recesses, and the plurality of recesses include a pre-culture vessel 110, a main culture vessel 120, a sorting vessel 130, a cell capture unit 150, a connection tube, and valves 171 to 179. These can be accommodated and held in the respective recesses.
- the valves 171 to 179 may be solenoid valves that are automatically opened and closed by the control unit, or pinch cocks that can be manually or automatically opened and closed.
- the head giving mechanism 200 includes a rotating shaft 210 that rotates integrally with the main stage 100, a motor 220, and a transmission mechanism 230 that transmits the rotation of the motor to the rotating shaft.
- the transmission mechanism can be a belt or a gear.
- the sub-stage 300 is provided with a liquid supply bellows container 310 and a waste liquid bellows container 320.
- the liquid supply bellows container 310 is provided with an inlet 314 for introducing a solution into the container 310.
- the liquid supply bellows container 310 and the waste liquid bellows container 320 are connected to expansion / contraction mechanisms 311 and 321 for expanding and contracting the bellows containers, respectively.
- the liquid supply bellows container 310 and the waste liquid bellows container 320 are made of a flexible resin and can be made disposable.
- the liquid supply bellows container 310 and the waste liquid bellows container 320 are connected to the cell capture unit 150 via a connection tube including a three-way switching valve (switching mechanism) 301.
- connection between the cell capture unit 150 and the liquid supply bellows container 310 and the connection between the cell capture unit 150 and the waste liquid bellows container 320 can be switched.
- the connection state of the three-way switching valve 301 can be switched by the control unit.
- the inlet 314 is closed with a cap.
- the substage 300 is also formed with a plurality of recesses.
- a liquid supply bellows container 310 In the plurality of recesses, a liquid supply bellows container 310, an expansion / contraction mechanism 311, a waste liquid bellows container 320, an expansion / contraction mechanism 321, a connection tube, and a three-way switching valve 301 are provided. Each is accommodated and can be held in each recess.
- the main stage 100 is provided with a plurality of arm portions 170 that are expanded and contracted by the control unit, and the substage 300 is provided with a plurality of arm coupling portions 330 that receive the plurality of arm portions 170.
- the subunit 300 is integrated with the main unit 100, and the subunit 300 can be rotated together with the main unit. Next, operation
- the pre-culture step executed in the pre-culture container 110 will be described.
- the main stage 100 and the sub stage 300 are arranged at a substantially horizontal culture position.
- cells and culture solution are injected from the introduction port 114 into the preculture vessel 110 using a dispensing mechanism, and CO 2 gas having an appropriate concentration is supplied from the gas supply unit 111.
- the temperature control unit 113 controls the temperature in the preculture container 110 to an appropriate temperature, and the motor 220 sets the rotation shaft 200 to a predetermined value.
- the main stage 100 as a whole tilts (oscillates or swings) periodically by rotating within the angular range. By this tilting, the cells, the culture solution, and CO 2 inside the preliminary culture vessel 110 on the main stage 100 are agitated, and the culture is executed.
- the drop providing mechanism 200 rotates the main stage 100 to stop the pre-culture vessel 110 at the drop transfer position.
- the drop transfer position is preferably such that the main stage 100 can be in a vertical state, but is not limited to be vertical, and there is an inclination that allows the liquid in the pre-culture vessel 110 to fall through the connection tube due to gravity. That's fine.
- the solution containing the cells in the pre-culture vessel 110 is automatically transferred to the main culture vessel 120 by gravity.
- the transfer of the solution can also be facilitated by closing the valve 172 and opening the valve 171 and injecting gas from the gas supply unit 111 into the pre-culture vessel 110. Note that the valves 176 and 179 are closed at the drop transfer position.
- the main culture step performed in the main culture container 120 will be described.
- the valve 173 is closed and the main stage 100 moves to a horizontal culture position.
- the culture solution is injected from the inlet 124 into the main culture vessel 120 using a dispensing mechanism, and CO 2 gas having an appropriate concentration is supplied from the gas supply unit 121.
- the temperature control unit 123 controls the temperature in the main culture container 120 to an appropriate temperature, and the motor 220 sets the rotation shaft 200 to a predetermined value.
- the main stage 100 as a whole tilts periodically by rotating within this angular range. By this tilting, the cells, the culture solution, and CO 2 inside the main culture vessel 120 on the main stage 100 are agitated, and the culture is performed.
- the culture medium exchange step when the culture medium in the main culture vessel 120 needs to be exchanged after a predetermined time has elapsed since the start of culture will be described.
- the main stage 100 and the substage 300 are integrated by connecting the arm part 170 and the arm coupling part 330 at the culture position.
- the main stage 100 and the substage 300 are rotated by the head giving mechanism 200 to move the main culture container 120 upward with respect to the substage 300 and stop at the head transfer position.
- the valves 175 and 179 are opened while the valve 176 is closed, and the cell capture unit 150 and the waste bellows container 320 are connected by the three-way switching valve 310 of the substage 300.
- the solution containing the cells in the main culture vessel 123 is transferred to the cell capture unit 150 according to gravity.
- the cells are captured by the upper surface of the filter block 151 (the surface on the valve 179 side), and the solution from which the cells have been removed further falls according to gravity and enters the waste liquid bellows container 320 that has been contracted in advance. Transported and discarded. Since the waste liquid bellows container 320 is contracted in advance as shown in FIG. 1, when the waste liquid bellows container 320 is extended using the expansion / contraction mechanism 321, the transfer of the solution from the main culture container 123 through the cell capture unit 150 is promoted. be able to.
- the waste liquid bellows container 320 and the cell capture unit 150 are separated by the three-way switching valve 301, and the main stage 100 and the sub stage 300 are moved to the liquid supply position by the drop applying mechanism 200.
- the liquid supply position is such that the main stage 100 and the substage 300 are substantially vertical, and the liquid supply bellows container 310 is positioned above the main culture container 120.
- the main stage 100 and the substage 300 do not necessarily have to be vertical, and the main culture vessel 120 side of the main stage 100 is inclined downward, and the liquid supply bellows vessel 310 of the main stage 100 and substage 300 is inclined upward. That's fine.
- the filter block 151 of the cell capture unit 150 is turned upside down.
- the cells captured on the upper surface side of the filter block 151 at the drop transfer position are captured on the lower surface side of the filter block 151 at the liquid supply position.
- the three-way switching valve 301 connects the liquid supply bellows container 310 and the cell capture unit 150, and the valves 179 and 175 are opened.
- the new culture solution is transferred to the cell capture unit 150 according to gravity from the supply bellows container 310 into which the new culture solution has been previously injected, and the culture solution is transferred to the lower surface of the filter block 151 of the cell capture unit 150 ( Together with the cells captured on the valve 179 side surface), the cells are transferred to the main culture vessel 120 to complete the liquid supply.
- the cell capturing unit 150 can be automatically separated by the cell capturing unit 150 by inverting the top and bottom of the cell capturing unit 150 using the head 200, and dispersing the cells into the culture solution. It becomes possible.
- the transfer of a new culture solution is accelerated
- the main stage 100 and the substage 300 are moved to the culture position by the drop applying mechanism 200, and the cell culture is repeated.
- the head giving mechanism 200 rotates the main stage 100 and stops the main culture container 120 at the head transfer position.
- the valves 175, 176, and 177 are opened and the valve 179 is closed, the solution containing the cells is dropped and transferred from the main culture container 120 to the sorting container 130 according to the gravity. Sorted by the sorting container 130.
- the valve 175 is closed, the valve 174 is opened, and gas is injected from the gas supply unit 121 into the main culture container 120, thereby promoting the transfer of the solution from the main culture container 120 to the sorting container 130. You can also.
- a slide mechanism 414 is connected to the culture vessel 110 (120), and the slide mechanism 414 periodically slides (vibrates) the culture vessel in the horizontal direction indicated by an arrow 414a in the drawing.
- the slide mechanism 414 is realized by converting the rotation of the motor into a linear motion using a rack or a cam. Since the position of the culture vessel 110 (120) is changed by the slide mechanism 414, the connection of the connection tube connected to the culture vessel 110 (120) is maintained even if the position of the culture vessel 110 (120) is changed. Thus, it is arranged with a margin in its length.
- the magnetic force adjusting unit 407 can be moved toward and away from the culture vessel 110 (120) along the guide 407b by the magnetic force adjusting unit moving mechanism 407c.
- the magnetic force adjusting unit 407 approaches the lower surface of the culture vessel 110 (120)
- the magnetic particles and cells contained in the culture solution in the culture vessel 110 (120) are removed from the lower surface of the culture vessel 110 (120) by the magnetic force of the magnet 407a. It can be concentrated and fixed (adsorbed).
- the magnetic force adjusting unit 407 is separated from the lower surface of the culture vessel 110 (120), the magnetic force of the magnet 407a does not reach the inside of the culture vessel 110 (120), and magnetic particles and cells move from the upper lower surface of the culture vessel 110 (120). To disperse.
- the magnetic force adjusting unit 407 has a plurality of permanent magnets 407a arranged in a matrix, that is, vertically and horizontally at equal intervals.
- the permanent magnets 407a included in this array can concentrate and fix the magnetic particles and cells contained in the culture solution in the culture vessel 110 (120), respectively, on the inner surface of the culture vessel 110 (120).
- Adjacent magnets 407a are arranged so that the polarities are always reversed. As a result, the polarities of the magnetic particles adsorbed on the adjacent magnets 407a become different, and as a result of the repulsive force acting between them, the population of magnetic particles and cells adsorbed on the magnets 407a are likely to concentrate.
- the magnetic particles can be separated from the cells by providing a magnetic particle adsorption magnet in the sorting container 130.
- the conventional culture system uses cylinders and pumps, so the cylinder must be cleaned, and there is a high risk of contamination.
- the culture container, the sorting container, and the bellows container to be used can be greatly reduced in the risk of contamination by making them completely disposable products based on plastic. It becomes.
- the danger of contamination increases, it can replace with each bellows container and can also use a cylinder.
- the solution movement between each culture vessel or between the culture vessel and the bellows vessel is performed by dropping by a drop, but the solution movement may be promoted by performing suction by a vacuum pump.
- the number of culture containers is two, but the present invention is not limited to this, and the number of culture containers may be one or three or more.
- An operation panel is connected to the control unit of the present embodiment, and culture can be performed by changing various settings of the program.
Abstract
Description
すなわち、本発明は以下の通りである。
(11)前記少なくとも一つの収容容器を保持する第1保持部と、前記シリンダ又はベローズ容器を保持する第2保持部とを備える、(5)~(10)のいずれか一項に記載の培養システムである。(12)前記第1保持部と前記第2保持部とは脱着可能である、(11)に記載の培養システムである。(13)前記収容容器は、温度調節部を備える、(1)~(12)のいずれか一項に記載の培養システムである。(14)前記収容容器は、二酸化炭素供給部を備える、(1)~(13)のいずれか一項に記載の培養システムである。(15)前記収容容器は、通気部を備える、(1)~(14)のいずれか一項に記載の培養システムである。(16)前記収容容器は、ディスポーザブルである、(1)~(15)のいずれか一項に記載の培養システムである。
(19)前記細胞を付着する磁性粒子を前記溶液に含み、前記培養容器の外部に設けられる磁石と、磁石の磁力を調節する磁力調節ユニットを備え、前記磁力調節ユニットが前記磁石の磁力を調節して、磁性粒子及び細胞を前記培養容器内で振盪又は振動する、(1)~(18)のいずれか一項に記載の培養システムである。(20)前記開閉機構及び前記落差付与機構を制御する制御部を備え、前記制御部は予め定めた手順にしたがって前記開閉機構及び前記落差付与機構を制御して、自動的に細胞培養及び溶液移動を実行する、(1)~(19)のいずれか一項に記載の培養システムである。
次に本実施形態の細胞培養システム1000の動作を説明する。
初めに、予備培養容器110で実行される予備培養ステップを説明する。メインステージ100とサブステージ300とが分離された状態で、メインステージ100とサブステージ300とは略水平な培養位置に配置されている。この培養位置で、導入口114から細胞及び培養液が、分注機構を用いて予備培養容器110に注入され、ガス供給部111から適切な濃度のCO2ガスが供給される。予備培養容器110内に細胞、培養液、CO2ガスが供給された状態で、温度調節ユニット113が予備培養容器110内の温度を適切な温度に制御すると共に、モータ220が回転軸200を所定の角度範囲で回転することにより、メインステージ100全体が周期的に傾動(揺動、スイング)する。この傾動によりメインステージ100上の予備培養容器110内部の細胞、培養液、CO2が攪拌され、培養が実行される。
次に、主培養容器120で実行される主培養ステップを説明する。予備培養容器110から主培養容器120への溶液移送が完了すると、弁173は閉鎖され、メインステージ100は水平な培養位置に移動する。この培養位置で、導入口124から培養液が、分注機構を用いて主培養容器120に注入され、ガス供給部121から適切な濃度のCO2ガスが供給される。主培養容器120内に細胞、培養液、CO2ガスが供給された状態で、温度調節ユニット123が主培養容器120内の温度を適切な温度に制御すると共に、モータ220が回転軸200を所定の角度範囲で回転することにより、メインステージ100全体が周期的に傾動する。この傾動によりメインステージ100上の主培養容器120内部の細胞、培養液、CO2が攪拌され、培養が実行される。
続いて、培養開始から所定時間経過して、主培養容器120内の培養液の交換が必要となった際の培養液交換ステップを説明する。初めに、培養位置において、アーム部170とアーム結合部330とが接続されることにより、メインステージ100とサブステージ300とが一体化される。落差付与機構200によりメインステージ100及びサブステージ300が回転して、主培養容器120をサブステージ300に対して上方に移動し、落差移送位置で停止する。
最後に、細胞分取ステップを説明する。培養開始から所定時間経過して主培養容器120内の細胞が十分に増殖すると、落差付与機構200がメインステージ100を回転して、が主培養容器120を落差移送位置で停止する。落差移送位置では、弁175、176、177が開放され、弁179は閉鎖されているため、細胞を含む溶液は、主培養容器120から分取容器130へ、重力にしたがって落下移送され、細胞が分取容器130で分取される。また、弁175を閉鎖し、弁174を開放してガス供給部121から主培養容器120内にガスを注入することにより、主培養容器120から分取容器130への溶液の移送を促進することもできる。
本実施形態の変形例を図2及び3を用いて説明する。本変形例は、予備培養容器110及び/又は主培養容器120をスライド機構414や、予備培養容器110及び/又は主培養容器120内の溶液を磁力により振盪をさせる磁力調節ユニット(振盪機構)407を備える。
100 メインステージ
110 予備培養容器
113 温度調節ユニット
120 主培養容器
123 温度調節ユニット
130 分取容器
150 細胞捕獲ユニット
200 落差付与機構
210 回転軸
220 モータ
300 サブステージ
301 三方切換弁
310 給液ベローズ容器
311 伸縮機構
320 廃液ベローズ容器
321 伸縮機構
Claims (23)
- 細胞及び溶液を収容する複数の収容容器と、前記複数の収容容器間を接続する管路と、前記管路を開閉する開閉機構と、前記複数の収容容器間で細胞及び溶液を落下移送するために、前記複数の収容容器の間に落差を付与する落差付与機構とを備える、培養システム。
- 前記複数の収容容器を保持する第1保持部を備える、請求項1に記載の培養システム。
- 前記落差付与機構が、前記第1保持部を移動することにより、前記複数の収容容器の少なくとも一つに落差を付与する、請求項1に記載の培養システム。
- 前記複数の収容容器は、1つ又は複数の培養容器を含む、請求項1~3のいずれか一項に記載の培養システム。
- 前記複数の収容容器の少なくとも一つには、少なくとも一つのシリンダ又はベローズ容器が接続される、請求項1~4のいずれか一項に記載の培養システム。
- 前記落差付与機構は、前記収容容器と、前記シリンダ又はベローズ容器との間で細胞及び溶液を落下移送するために、前記収容容器と、前記シリンダ又はベローズ容器との間に落差を付与する、請求項1~5のいずれか一項に記載の培養システム。
- 前記シリンダ又はベローズ容器は、廃液用容器であり、前記廃液用容器及び前記収容容器の間を接続する管路に、細胞捕獲ユニットが設けられる、請求項6に記載の培養システム。
- 前記シリンダ又はベローズ容器は給液用容器であり、前記給液用容器は前記細胞捕獲ユニットに接続される、請求項7に記載の培養システム。
- 前記細胞捕獲ユニット及び前記廃液用容器の接続と、前記細胞捕獲ユニット及び前記給液用容器の接続とを切換える切換機構を備える、請求項8に記載の培養システム。
- 前記シリンダ又はベローズ容器を伸縮する伸縮機構を備える、請求項5~9のいずれか一項に記載の培養システム。
- 前記少なくとも一つの収容容器を保持する第1保持部と、前記シリンダ又はベローズ容器を保持する第2保持部とを備える、請求項5~10のいずれか一項に記載の培養システム。
- 前記第1保持部と前記第2保持部とは脱着可能である、請求項11に記載の培養システム。
- 前記収容容器は、温度調節部を備える、請求項1~12のいずれか一項に記載の培養システム。
- 前記収容容器は、二酸化炭素供給部を備える、請求項1~13のいずれか一項に記載の培養システム。
- 前記収容容器は、通気部を備える、請求項1~14のいずれか一項に記載の培養システム。
- 前記収容容器は、ディスポーザブルである、請求項1~15のいずれか一項に記載の培養システム。
- 前記ベローズ容器は、ディスポーザブルである、請求項5~12のいずれか一項に記載の培養システム。
- 前記収容容器をスイングするスイング機構を備える、請求項1~17のいずれか一項に記載の培養システム。
- 前記細胞を付着する磁性粒子を前記溶液に含み、前記培養容器の外部に設けられる磁石と、磁石の磁力を調節する磁力調節ユニットを備え、前記磁力調節ユニットが前記磁石の磁力を調節して、磁性粒子及び細胞を前記培養容器内で振盪又は振動する、請求項1~18のいずれか一項に記載の培養システム。
- 前記開閉機構及び前記落差付与機構を制御する制御部を備え、前記制御部は予め定めた手順にしたがって前記開閉機構及び前記落差付与機構を制御して、自動的に細胞培養及び溶液移動を実行する、請求項1~19のいずれか一項に記載の培養システム。
- 請求項1~20のいずれか一項に記載の培養システムを用いて細胞培養を行う方法。
- 前記落差付与機構が前記複数の収容容器間の落差を小さくした培養位置で培養を行うステップと、
前記落差付与機構が前記複数の収容容器間の落差を大きくした落下位置で細胞及び溶液を移送するステップと、
前記複数の収容容器の少なくとも一つに接続された少なくとも一つのベローズ容器を用いて、溶液の処理を行うステップとを備える、請求項21に記載の方法。 - 前記溶液の処理を行うステップは、溶液を廃棄するステップ又は溶液を供給するステップである、請求項22に記載の方法。
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