WO2017038887A1 - 多能性幹細胞製造システム - Google Patents
多能性幹細胞製造システム Download PDFInfo
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- WO2017038887A1 WO2017038887A1 PCT/JP2016/075540 JP2016075540W WO2017038887A1 WO 2017038887 A1 WO2017038887 A1 WO 2017038887A1 JP 2016075540 W JP2016075540 W JP 2016075540W WO 2017038887 A1 WO2017038887 A1 WO 2017038887A1
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- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
- C12M47/04—Cell isolation or sorting
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0634—Cells from the blood or the immune system
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- 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
- C12N5/0696—Artificially induced pluripotent stem cells, e.g. iPS
Definitions
- the present invention relates to a cell storage technique, and particularly to a pluripotent stem cell production system.
- Embryonic stem cells are stem cells established from early embryos of humans and mice. ES cells have pluripotency capable of differentiating into all cells present in a living body. Currently, human ES cells are available for cell transplantation therapy for many diseases such as Parkinson's disease, juvenile diabetes, and leukemia. However, there are obstacles to transplantation of ES cells. In particular, transplantation of ES cells can elicit immune rejection similar to the rejection that occurs following unsuccessful organ transplantation. In addition, there are many criticisms and objections from the ethical point of view regarding the use of ES cells established by destroying human embryos.
- iPS pluripotent stem cells
- Induced stem cells such as iPS cells are established by introducing an inducer such as a gene into the cells, and are expanded and cryopreserved.
- an inducer such as a gene
- the cells are expanded and cryopreserved.
- Cost Clinical iPS cells need to be prepared and stored in a clean room that is kept very clean. However, the cost of maintaining the required level of cleanliness is very high. For this reason, it is expensive to produce iPS cells, which is a major obstacle to industrialization.
- iPS cells derived from only one person are produced in the clean room over a predetermined time. In addition, it takes a long time to establish iPS cells and evaluate their quality. However, since iPS cells are produced only for one person at a time in a clean room, it takes a very long time to produce iPS cells for many applicants.
- an object of the present invention is to provide a stem cell production system capable of producing stem cells.
- a cell feeding path before introduction through which a solution containing cells passes, and a cell feeding path before introduction are introduced, and a pluripotency inducer is introduced into the cell to produce an inducer introduced cell Factor introduction device, cell mass production device for culturing inducer-introduced cells to produce a plurality of cell souls, cell introduction path before introduction, induction factor delivery mechanism, factor introduction device, and cell mass
- a plurality of cells comprising an initialization culture device for culturing induced factor-introduced cells produced by the factor introduction device, and a stem cell established by the initialization culture device.
- An expansion culture apparatus that expands and cultures the cell mass of the cell
- the initialization culture apparatus includes a first medium supply device that supplies the induction factor-introduced cell with a medium
- the expansion culture apparatus includes a culture medium with a plurality of cell masses.
- a second medium replenishing device for replenishing Cell production system is provided.
- the first medium replenishing device may continuously replenish the inducer-introduced cells with the medium.
- the first medium supply device may supply the induction factor-introduced cell with a medium at a predetermined timing.
- the second medium supply device may continuously supply a medium to a plurality of cell masses.
- the second medium supply device may supply a plurality of cell masses with a medium at a predetermined timing.
- the factor introduction device is pluripotent from the factor introduction unit connected to the pre-introduction cell fluid path, the factor storage unit for storing the pluripotency inducer, and the factor storage unit to the factor introduction unit
- a factor feeding path for flowing the sex induction factor and a pump for flowing the liquid in the factor feeding path may be provided.
- a pluripotency inducer may be introduced into cells by RNA lipofection in the factor introduction part.
- the pluripotency inducer may be DNA, RNA, or protein.
- a pluripotency inducer may be incorporated into the vector.
- the vector may be a Sendai virus vector.
- the pump may be a diaphragm pump, a tubing pump, or a perista pump (registered trademark).
- the initialization culture apparatus includes a dialysis tube in which the inducer-introduced cells and the gel medium are placed, and a container in which the dialysis tube is placed and the gel medium is placed around the dialysis tube.
- An incubator may be provided.
- the fractional molecular weight of the dialysis tube may be 0.1 KDa or more.
- the dialysis tube may be composed of at least one selected from cellulose esters, cellulose esters, regenerated cellulose, and cellulose acetate.
- the first medium supply device may supply gel medium around the dialysis tube in the container.
- the first medium supply device may supply the gel medium in the dialysis tube.
- the above stem cell production system may further include a medium feeding path through which the gel medium to be supplied flows.
- the medium feeding path may be carbon dioxide permeable.
- the above stem cell production system may further include a pump for flowing the liquid in the medium feeding path.
- the pump may be a diaphragm pump, a tubing pump, or a perista pump (registered trademark).
- the above stem cell production system may further include a refrigerated storage unit that refrigerates and stores the gel medium to be replenished.
- the above-described stem cell production system may be further provided with a waste liquid feeding path connected to the container and for allowing the gel medium in the container to flow out.
- the above stem cell production system may further include an introduced cell liquid supply path for sending induced factor-introduced cells from the factor introduction apparatus to the initialization culture apparatus.
- the introduced cell feeding path may be carbon dioxide permeable.
- the above stem cell production system may further include a pump for flowing the liquid in the introduced cell feeding path.
- the pump may be a diaphragm pump, a tubing pump, or a perista pump (registered trademark).
- the suspension culture apparatus includes a dialysis tube in which a plurality of cell masses and a gel medium are placed, and a container in which the dialysis tube is placed and the gel medium is placed around the dialysis tube.
- a vessel may be provided.
- the fractional molecular weight of the dialysis tube may be 0.1 KDa or more.
- the dialysis tube may be composed of at least one selected from cellulose esters, cellulose esters, regenerated cellulose, and cellulose acetate.
- the second medium supply device may supply the gel medium around the dialysis tube in the container.
- the second medium supply device may supply the gel medium in the dialysis tube.
- the above stem cell production system may further include a medium feeding path through which the gel medium to be supplied flows.
- the medium feeding path may be carbon dioxide permeable.
- the above stem cell production system may further include a pump for flowing the liquid in the medium feeding path.
- the pump may be a diaphragm pump, a tubing pump, or a perista pump (registered trademark).
- the above stem cell production system may further include a refrigerated storage unit that refrigerates and stores the gel medium to be replenished.
- the above-described stem cell production system may be further provided with a waste liquid feeding path connected to the container and for allowing the gel medium in the container to flow out.
- the above stem cell production system may further include an introduction cell feeding path for sending the inducer-introduced cells from the initialization culture apparatus to the expansion culture apparatus.
- the above stem cell production system may further include an introduction cell feeding path that connects the inside of the dialysis tube of the suspension culture apparatus of the initialization culture apparatus and the inside of the dialysis tube of the suspension culture apparatus of the expansion culture apparatus.
- the introduced cell feeding path may be carbon dioxide permeable.
- the above stem cell production system may further include a pump for flowing the liquid in the introduced cell feeding path.
- the pump may be a diaphragm pump, a tubing pump, or a perista pump (registered trademark).
- At least one of the initialization culture device and the expansion culture device may include a carbon dioxide permeable bag in which a medium is placed.
- the cell mass production device has a first division mechanism that divides a cell mass composed of stem cells established by the initialization culture device into a plurality of cell masses, and a stem cell that is expanded and cultured by the expansion culture device A second dividing mechanism that divides the cell mass composed of the cell mass into a plurality of cell masses.
- the first dividing mechanism may be provided in the introduction cell liquid supply path for sending the induction factor-introduced cell from the initialization culture apparatus to the expansion culture apparatus.
- At least one of the first and second dividing mechanisms may divide the cell cluster into single cells.
- At least one of the first and second dividing mechanisms includes a divider having a through hole therein, and the through hole communicates with the large hole diameter portion and the large hole diameter portion.
- a medium having a small pore diameter portion having a smaller pore diameter alternately and containing a cell mass may flow through the through-hole.
- the central axis of the large pore diameter portion and the central axis of the small pore diameter portion may be offset.
- At least one of the first and second dividing mechanisms each includes a connection block having a through hole therein, and a recess is formed at the first end of the connection block.
- a convex portion is provided at the second end of the block, and when there are a plurality of connecting blocks, the convex portion engages with the concave portion of the adjacent connecting block, and the through hole communicates with the concave portion.
- the hole diameter portion communicates with the first large hole diameter portion, communicates with the small hole diameter portion having a smaller hole diameter than the first large hole diameter portion, and the small hole diameter portion, has a larger hole diameter than the small hole diameter portion, and opens at the tip of the convex portion.
- a medium containing a cell mass may flow through the through-hole.
- the second large pore diameter portion can communicate smoothly with the first large pore diameter portion of the adjacent connection block. Good.
- the central axis of the first and second large pore diameter portions and the central axis of the small pore diameter portion may be offset.
- each of the first and second dividing mechanisms further includes a tip block having a through-hole provided therein, and a recess is formed at the first end of the tip block.
- a nozzle is provided at the second end, the concave portion of the tip block engages with the convex portion of the connecting block, the through hole communicates with the large hole diameter portion communicating with the concave portion, the large hole diameter portion, And a small hole diameter portion having a smaller hole diameter than the hole diameter portion and having an opening at the tip of the nozzle.
- the second large hole diameter portion of the connecting block and the large hole diameter portion of the tip block may communicate smoothly.
- each of the first and second dividing mechanisms further includes a terminal block having a through-hole provided therein, a recess at the first end of the terminal block, and a first block of the terminal block.
- Convex portions may be provided at the end portions of the two, and the convex portions of the end blocks may be fitted into the concave portions of the connection block.
- each of the first and second dividing mechanisms includes an insertion nozzle that is inserted into the recessed portion of the terminal block, and a suction / discharger that suctions and discharges the medium containing the cell mass that communicates with the insertion nozzle. , May be further provided.
- the above stem cell manufacturing system may further include a packaging device that sequentially packages each of the plurality of cell clusters, and the housing may store the packaging device.
- the cell mass production apparatus may further include a cell soul transport mechanism that sequentially sends a plurality of cell souls to the package device.
- the package device may freeze the cell mass using a Peltier element or liquid nitrogen.
- the package device may freeze the cell mass by vaporization compression or vaporization absorption.
- the above stem cell production system is a solution replacer comprising a cylindrical member and a liquid permeation filter disposed inside the cylindrical member, wherein the cell member has a plurality of cell masses on the liquid permeation filter.
- a cell mass introduction hole for introducing a solution containing a solution, a substitution solution introduction hole for introducing a substitution solution on the liquid permeation filter, and a substitution solution containing a plurality of cell masses flow out on the liquid permeation filter
- the stem cell manufacturing system further includes a waste liquid feeding path connected to the waste liquid outflow hole, and the solution flow in the waste liquid feeding path is allowed when the solution of the solution containing a plurality of cell masses is discarded. When a plurality of cell masses are dispersed therein, the solution flow in the waste liquid feeding path may not be allowed.
- the replacement solution may be a culture medium, a cryopreservation solution, or a cell mass splitting enzyme solution.
- the above stem cell production system may further include an introduction cell feeding path for sending a plurality of cell masses from the expansion culture apparatus to the solution replacement device.
- the above stem cell production system may further include an introduction cell liquid supply path that connects the inside of the dialysis tube of the suspension culture device of the expansion culture apparatus and the cell mass introduction hole of the solution replacement device.
- the introduced cell feeding path may be carbon dioxide permeable.
- the above stem cell production system may further include a pump for flowing the liquid in the introduced cell feeding path.
- the pump may be a diaphragm pump, a tubing pump, or a perista pump (registered trademark).
- the stem cell production system may further include a separation device that separates cells from blood, and a solution containing cells separated by the separation device may pass through the cell feeding path before introduction.
- the separation device may separate mononuclear cells from blood by a magnetic cell separation method or a method using an erythrocyte coagulant.
- the separation device may further include a mononuclear cell purification filter for purifying mononuclear cells.
- the above stem cell production system may further include a pump for flowing the liquid in the cell feeding path before introduction.
- the pump may be a diaphragm pump, a tubing pump, or a perista pump (registered trademark).
- the above-described stem cell manufacturing system is a case that stores at least one of a factor introduction unit, a suspension culture device of an initialization culture device, and a suspension culture device of an expansion culture device, and is disposed in a housing May be further provided.
- the suspension culture device of the initialization culture device, the suspension culture device of the expansion culture device, and the case may be disposable.
- the above stem cell production system is a case that stores at least one of a separation device, a factor introduction unit, a suspension culture device of an initialization culture device, a suspension culture device of an expansion culture device, and a solution replacement device.
- a case disposed in the housing may be further provided.
- the separation device, the factor introduction unit, the suspension culture device of the initialization culture device, the suspension culture device of the expansion culture device, the solution replacement device, and the case are disposable. Good.
- the stem cell production system further includes a plurality of cases arranged in a housing, and in each of the plurality of cases, a factor introduction unit, a suspension culture device of an initialization culture device, a suspension culture device of an expansion culture device, , At least one of them may be stored.
- the suspension culture device of the initialization culture device, the suspension culture device of the expansion culture device, and a plurality of cases may be disposable.
- the stem cell production system further includes a plurality of cases arranged in a housing, and each of the plurality of cases includes a separation device, a factor introduction unit, a suspension culture device of an initialization culture device, and an expansion culture device. At least one of the suspension incubator and the solution replacer may be stored.
- the separation device, the factor introduction unit, the suspension culture device of the initialization culture device, the suspension culture device of the expansion culture device, the solution replacement device, and a plurality of cases are disposable. May be.
- the case and the housing may be provided with a fitting portion that engages with each other, and the case may be disposed at a predetermined position in the housing.
- the liquid feeding path in the case and the pump outside the case may be connected.
- the factor introduction unit in the case and the factor storage unit outside the case may be connected.
- the suspension culture device of the initialization culture device and the suspension culture device of the expansion culture device in the case the medium storage unit for storing the medium outside the case, May be connected.
- the suspension culture device of the initialization culture device and the suspension culture device of the expansion culture device in the case the waste liquid storage unit for storing the waste liquid outside the case, May be connected.
- the separation device in the case may be connected to the blood storage unit for storing the blood outside the case.
- the separation device in the case may be connected to the separation agent storage unit for storing the blood separation agent outside the case.
- the solution replacement unit in the case and the cryopreservation liquid storage unit for storing the cryopreservation liquid outside the case may be connected.
- the stem cell manufacturing system may further include an initialization culture imaging apparatus that images cells cultured in the initialization culture apparatus and an expansion culture imaging apparatus that images cells cultured in the expansion culture apparatus. .
- the initialization culture imaging device and the expansion culture imaging device may each image a cell via a telecentric lens.
- the above stem cell manufacturing system may further include an image processing unit that applies a high-pass filter to an image obtained by at least one of the initialization culture imaging apparatus and the expansion culture imaging apparatus.
- the image processing unit may extract a cell mass in the image by applying a watershed algorithm to the image to which the high-pass filter is applied.
- the image processing unit may apply the distance transform method to the image before applying the watershed algorithm to the image.
- the image processing unit may calculate the size of the extracted cell soul.
- the size of the cell mass calculated from the image photographed by the initialization culture imaging device is equal to or larger than the threshold value, a plurality of cell masses composed of stem cells established by the initialization culture device are expanded. It may be transferred to a culture apparatus.
- the supply rate of the medium may be changed in the initialization culture apparatus according to the size of the cell mass calculated from the image taken by the initialization culture imaging apparatus.
- the supply rate of the medium may be changed in the expansion culture apparatus according to the size of the cell mass calculated from the image captured by the expansion culture imaging apparatus.
- the image processing unit may calculate the number of extracted cell souls.
- the supply rate of the medium may be changed in the initialization culture apparatus according to the number of cell masses calculated from the image taken by the initialization culture imaging apparatus.
- the supply rate of the medium may be changed in the expansion culture device according to the number of cell masses calculated from the images taken by the expansion culture imaging device.
- the above stem cell production system further comprises a relation storage device for storing the relationship between the turbidity of the medium and the density of cell souls in the medium, and obtained by at least one of the initialization culture photographing apparatus and the expansion culture photographing apparatus. Based on the obtained image, the turbidity value of the medium in which the cells are cultured is calculated, and based on the calculated turbidity value and the relationship, the image of calculating the density value of the photographed cell soul A processing unit may be further provided.
- the density of the cell mass calculated from the image photographed by the initialization culture imaging device is equal to or higher than the threshold, a plurality of cell masses composed of stem cells established by the initialization culture device are expanded and cultured. It may be transferred to a device.
- the supply rate of the medium may be changed in the initialization culture apparatus according to the density of the cell mass calculated from the image taken by the initialization culture imaging apparatus.
- the supply rate of the medium may be changed in the expansion culture device according to the density of the cell mass calculated from the image taken by the expansion culture imaging device.
- the above stem cell production system further comprises a relation storage device for storing the relation between the color of the medium and the hydrogen ion index of the medium, and an image obtained by at least one of the initialization culture imaging apparatus and the enlarged culture imaging apparatus
- An image processing unit that calculates the color value of the culture medium and calculates the value of the hydrogen ion exponent of the photographed culture medium based on the calculated color value and the relationship may be further provided.
- the culture medium when the hydrogen ion index calculated from the image taken by the initialization culture imaging apparatus is outside the predetermined range, the culture medium may be replaced in the initialization culture apparatus.
- the medium when the hydrogen ion index calculated from the image photographed by the enlargement culture photographing apparatus is outside the predetermined range, the medium may be exchanged in the enlargement culture apparatus.
- the color of the medium may be the hue of the medium.
- the medium when the hydrogen ion index measured by the initialization culture apparatus is outside the predetermined range, the medium may be exchanged in the initialization culture apparatus.
- the medium when the hydrogen ion index measured with the expansion culture apparatus is outside the predetermined range, the medium may be exchanged with the expansion culture apparatus.
- the inner wall of the cell feeding path before introduction may be non-cell-adhesive.
- the pre-introduction cell liquid supply path and the induction factor liquid supply mechanism may be provided on the substrate.
- the stem cell production system may further include an air cleaning device that cleans the gas in the housing.
- the stem cell production system may further include a temperature management device that manages the temperature of the gas in the housing.
- the above stem cell production system may further include a temperature management device for managing the temperature of the medium in the initialization culture device and the expansion culture device.
- the temperature management device increases the temperature of the medium when the temperature of the medium is lower than the predetermined range, and decreases the temperature of the medium when the temperature of the medium is higher than the predetermined range. Also good.
- the stem cell manufacturing system may further include a carbon dioxide concentration management device that manages the carbon dioxide concentration of the gas in the housing.
- the above stem cell production system may further include a sterilizer for dry heat sterilization or gas sterilization inside the housing.
- the induction factor liquid feeding mechanism, the factor introduction apparatus, and the cell mass production apparatus are controlled by the server based on the work procedure, and the server is the induction factor liquid delivery mechanism, the factor introduction apparatus, and the cell mass. It may be monitored whether the production apparatus is operating based on the work procedure, and an operation record may be created.
- connection block provided with a through-hole through which a culture medium containing a cell mass flows, and a recess is formed at the first end of the connection block.
- the convex portion is fitted with a concave portion of the adjacent connecting block, and the first large hole diameter portion where the through hole communicates with the concave portion, A second small hole diameter portion communicating with the first large hole diameter portion, a small hole diameter portion communicating with the small hole diameter portion, a hole diameter larger than the small hole diameter portion, and having an opening at the tip of the convex portion.
- a cell mass divider having a large pore diameter portion.
- the second large pore diameter portion smoothly communicates with the first large pore diameter portion of the adjacent connection block. Also good.
- the central axis of the first and second large pore diameter portions and the central axis of the small pore diameter portion may be offset.
- the cell clumping device further includes a tip block having a through hole therein, a recess at the first end of the tip block, and a nozzle at the second end of the tip block.
- the concave portion of the tip block is engaged with the convex portion of the connecting block, the through hole communicates with the large hole diameter portion communicating with the concave portion, and the large hole diameter portion. And a small hole diameter portion having an opening.
- the connecting block and the tip block when the connecting block and the tip block are connected, the second large pore diameter portion of the connecting block and the large pore diameter portion of the tip block may communicate smoothly.
- the cell clumping device further includes a terminal block having a through-hole provided therein, a concave portion at the first end of the terminal block, and a convex portion at the second end of the terminal block.
- the convex portion of the terminal block may be fitted with the concave portion of the connecting block.
- the cell clump divider may further include an insertion nozzle that is inserted into the concave portion of the end block, and a suction / discharger that communicates with the insertion nozzle and sucks and discharges the medium containing the cell clumps.
- a stem cell manufacturing system including an imaging device that images a cultured cell and an image processing unit that applies a high-pass filter to an image obtained by the imaging device.
- the imaging device may image cells via a telecentric lens.
- the image processing unit may extract a cell mass in the image by applying a watershed algorithm to the image to which the high-pass filter is applied.
- the image processing unit may apply the distance transform method to the image before applying the watershed algorithm to the image.
- the image processing unit may calculate the size of the extracted cell soul.
- a plurality of cell masses may be passaged in the expansion culture.
- the supply rate of the medium in the incubator may be changed according to the size of the cell mass calculated from the image photographed by the photographing device.
- the image processing unit may calculate the number of extracted cell souls.
- the supply rate of the medium in the incubator may be changed according to the number of cell masses calculated from the images photographed by the photographing device.
- the image capturing device that captures the cultured cells
- the relation storage device that stores the relationship between the turbidity of the medium and the density of the cell soul in the medium
- the image capturing device are obtained.
- An image processing unit that calculates a turbidity value of a medium in which cells are cultured based on an image, and calculates a density value of a photographed cell soul based on the calculated turbidity value and relationship
- a stem cell manufacturing system is provided.
- the imaging device may image cells via a telecentric lens.
- the supply rate of the medium in the incubator may be changed according to the density of the cell mass calculated from the image photographed by the photographing device.
- a photographing device that photographs a cultured cell
- a relationship storage device that memorizes a relationship between a color of a medium and a hydrogen ion index of the medium, and a medium in an image obtained by the photographing device
- an image processing unit that calculates a value of a hydrogen ion index of a photographed culture medium based on the calculated color value and the relationship, and a stem cell manufacturing system is provided.
- the medium when the hydrogen ion index calculated from the image photographed by the photographing device is outside the predetermined range, the medium may be exchanged in the incubator.
- the color of the medium may be the hue of the medium.
- a stem cell production system capable of producing stem cells can be provided.
- FIG. 2 is a fluorescence micrograph according to Example 1.
- FIG. 2 is a graph showing the analysis results by a fluorescence activated flow cytometer according to Example 1.
- FIG. 2 is a photograph of an iPS cell colony according to Example 2.
- FIG. 2 is a photograph of an iPS cell colony according to Example 2.
- FIG. 2 is a photograph of an iPS cell colony according to Example 2.
- FIG. 2 is a photograph of an iPS cell colony according to Example 2.
- FIG. 6 is a graph showing the state of differentiation of colonies of iPS cells according to Example 2.
- 4 is a photograph of an iPS cell colony according to Example 3. It is a graph which shows the result of Example 4.
- 6 is a photograph of an iPS cell cluster according to Example 5.
- 10 is a graph showing the results of Example 5.
- a stem cell manufacturing system includes a separation device 10 for separating cells from blood, and a pre-introduction cell liquid solution through which a solution containing cells separated by the separation device 10 passes.
- the inducing factor feeding mechanism 21 for sending the pluripotency inducing factor into the pre-introduction cell feeding path 20, and the pre-introduction cell feeding path 20 to introduce the pluripotency inducing factor into the cell
- a factor introduction device 30 for producing an inducer-introduced cell
- a cell mass production device 40 for culturing the inducer-introduced cell to produce a plurality of cell souls composed of stem cells
- a packaging device for sequentially packaging each of the plurality of cell masses 100.
- the stem cell production system further includes a small casing 200 that houses the separation device 10, the pre-introduction cell liquid supply path 20, the induction factor liquid supply mechanism 21, the factor introduction apparatus 30, the cell mass production apparatus 40, and the package apparatus 100. Prepare.
- the stem cell production system further includes an air cleaning device that cleans the gas in the housing 200, a temperature management device that manages the temperature of the gas in the housing 200, and carbon dioxide (CO 2 ) in the gas in the housing 200.
- You may provide the carbon dioxide concentration management apparatus which manages a density
- the air cleaning device may include a cleanliness sensor that monitors the cleanliness of the gas in the housing 200.
- the air cleaning device cleans the air in the housing 200 using, for example, a HEPA (High Efficiency Particulate Air) filter.
- the air cleaning device sets the cleanliness of the air in the housing 200 to a class of ISO1 to ISO6 according to ISO standard 14644-1.
- the temperature management device may include a temperature sensor that monitors the temperature of the gas in the housing 200.
- CO 2 concentration control device may be provided with a CO 2 concentration sensor for monitoring the CO 2 concentration of the gas within the enclosure 200.
- the housing 200 is provided with a door, for example, but when the door is closed, the inside is completely closed, and the cleanliness, temperature, and CO 2 concentration of the air inside can be kept constant. Is possible.
- the housing 200 is preferably transparent so that the state of the internal device can be observed from the outside.
- the housing 200 may be a glove box in which a glove such as a rubber glove is integrated.
- the separation device 10 receives, for example, a vial containing human blood.
- the separation device 10 includes an anticoagulant tank for storing an anticoagulant such as ethylenediaminetetraacetic acid (EDTA), heparin, and biological preparation reference blood preservation solution A (ACD-A solution, Terumo Corporation). I have.
- the separation device 10 adds an anticoagulant to human blood from an anticoagulant tank using a pump or the like.
- the separation apparatus 10 includes a separation reagent tank that stores a mononuclear cell separation reagent such as Ficoll-Paque PREMIUM (registered trademark, GE Healthcare Japan Co., Ltd.).
- the separation apparatus 10 dispenses 5 mL of the mononuclear cell separation reagent from the separation reagent tank into, for example, two 15 mL tubes using a pump or the like.
- a resin bag may be used instead of the tube.
- the separation apparatus 10 includes a buffer solution tank for storing a buffer solution such as phosphate buffered saline (PBS).
- the separation device 10 is diluted by adding 5 mL of buffer solution from a buffer solution tank to, for example, 5 mL of human blood using a pump or the like.
- the separating apparatus 10 adds 5 mL of diluted human blood on a mononuclear cell separation reagent in a tube using a pump or the like.
- the separation device 10 further includes a centrifuge capable of setting the temperature.
- the centrifuge is set at 18 ° C., for example.
- the separation device 10 uses a moving device or the like to place a tube containing a mononuclear cell separation reagent and human blood into a centrifuge holder.
- the centrifuge centrifuges the solution in the tube at, for example, 400 ⁇ g for 30 minutes. Instead of the tube, the resin bag may be centrifuged.
- the separation device 10 collects a white turbid intermediate layer of the mononuclear solution in the tube with a pump or the like.
- the separation device 10 sends the recovered mononuclear cell suspension to the pre-introduction cell liquid supply path 20 using a pump or the like.
- the separation device 10 further adds, for example, 12 mL of PBS to 2 mL of the recovered mononuclear cell solution, and puts the tube into a centrifuge holder. The centrifuge centrifuges the solution in the tube at, for example, 200 ⁇ g for 10 minutes.
- the separation device 10 uses a pump or the like to aspirate and remove the supernatant of the solution in the tube, and 3 mL of a mononuclear cell medium such as X-VIVO 10 (registered trademark, Lonza Japan Co., Ltd.) Suspend in addition to the mononuclear cell solution.
- the separation device 10 sends the mononuclear cell suspension to the pre-introduction cell liquid supply path 20 using a pump or the like.
- the separation device 10 may separate mononuclear cells from blood using a dialysis membrane. Further, when using somatic cells such as fibroblasts previously separated from the skin or the like, the separating device 10 is not necessary.
- Separation device 10 may separate cells suitable for induction by a method other than centrifugation.
- the cells to be separated are T cells, cells that are positive for CD3, CD4, or CD8 may be separated by panning.
- cells to be separated are vascular endothelial progenitor cells, cells that are positive for CD34 may be separated by panning.
- cells to be separated are B cells, cells that are positive for any of CD10, CD19, and CD20 may be separated by panning.
- cells suitable for induction are not limited to blood-derived cells.
- the induction factor feeding mechanism 21 includes an induction factor introduction reagent tank for storing an induction factor introduction reagent solution and the like.
- the induction factor introduction reagent solution such as a gene introduction reagent solution includes, for example, an electroporation solution such as a Human T Cell Nucleofector (registered trademark, Lonza Japan Co., Ltd.) solution, a supplement solution, and a plasmid set.
- the plasmid set includes, for example, 0.83 ⁇ g of pCXLE-hOCT3 / 4-shp53-F, 0.83 ⁇ g of pCXLE-hSK, 0.83 ⁇ g of pCE-hUL, and 0.5 ⁇ g of pCXWB-EBNA1.
- the induction factor feeding mechanism 21 uses a micropump or the like to transfer the induction factor introduction reagent solution to the cell feeding channel 20 before introduction so that the mononuclear cell suspension is suspended in the induction factor introduction reagent solution. Send
- a poly-HEMA poly 2-hydroxyethyl methacrylate
- a material in which cells are difficult to adhere may be used as the material of the cell feeding path 20 before introduction.
- a material having good temperature conductivity and CO 2 permeability as the material of the cell feeding path 20 before introduction, the conditions in the cell feeding path 20 before introduction are managed in the housing 200. Equivalent to temperature and CO 2 concentration.
- the pre-introduction cell liquid supply path 20 may be provided with a backflow prevention valve from the viewpoint of preventing contamination.
- the factor introduction device 30 connected to the cell feeding path 20 before introduction is, for example, an electroporator, receives a mixed solution of an induction factor introduction reagent solution and a mononuclear cell suspension, and transmits a plasmid to the mononuclear cell. Perform electroporation. After the electroporation is performed, the factor introduction apparatus 30 adds a mononuclear cell culture medium to a solution containing the mononuclear cells electroporated with the plasmid.
- the factor introduction device 30 uses a pump or the like to send a solution containing a mononuclear cell electroporated with a plasmid (hereinafter referred to as “induction factor-introduced cell”) to the introduction cell feeding path 31.
- the factor introduction device 30 is not limited to an electroporator.
- the factor introduction device 30 may introduce RNA encoding the reprogramming factor into cells by the lipofection method.
- the lipofection method is a method in which a complex of a negatively charged nucleic acid and a positively charged lipid is formed by electrical interaction, and the complex is taken into the cell by endocytosis or membrane fusion. .
- the lipofection method has advantages such as little damage to cells, excellent introduction efficiency, simple operation, and less time.
- Reprogramming factor RNA as a pluripotency inducer includes, for example, Oct3 / 4 mRNA, Sox2 mRNA, Klf4 mRNA, and c-Myc mRNA.
- RNA lipofection reagent for example, a small interfering RNA (siRNA) or a lipofection reagent is used.
- siRNA lipofection reagents siRNA lipofection reagents and mRNA lipofection reagents can be used.
- Lipofectamine registered trademark
- RNAiMAX Thermo Fisher Scientific
- Lipofectamine registered trademark
- MessengerMAX ThermoFisher Scientific 3 registered trademark, Lipofect3 registered trademark, Lipofect3 registered trademark
- NeonTransfection System Thermo Fisher scientific
- Stemfect RNA transfection reagent Stemfect
- NextFect registered trademark
- RNA Transfection Reagent BiooScientific
- the factor introduction apparatus 30 introduces the reprogramming factor into the cell by the lipofection method, the reprogramming factor RNA, the reagent, and the like are sent out to the pre-introduction cell liquid feeding path 20 by the induction factor liquid feeding mechanism 21.
- Poly-HEMA may be coated on the inner wall of the introduced cell liquid supply path 31 to prevent the cells from adhering to be non-adhesive.
- a material in which cells are difficult to adhere may be used as the material of the introduced cell liquid supply path 31.
- the conditions in the introduced cell liquid supply path 31 can be controlled by the controlled temperature in the casing 200 and Equivalent to CO 2 concentration.
- the introduction cell liquid supply path 31 may be provided with a backflow prevention valve from the viewpoint of preventing contamination.
- many cells may die and a cell mass of dead cells may be formed.
- a filter for removing dead cell mass may be provided in the introduced cell liquid supply path 31.
- one or a plurality of wrinkles that change the inner diameter intermittently may be provided inside the introduced cell liquid supply path 31.
- the inner diameter of the introduced cell liquid supply path 31 may be changed intermittently.
- the cell mass production apparatus 40 connected to the introduction cell liquid supply path 31 includes an initialization culture apparatus 50 that cultures the induced factor introduction cells produced by the factor introduction apparatus 30, and an initialization culture apparatus.
- a first dividing mechanism 60 that divides a cell mass (cell colony) composed of stem cells established in 50 into a plurality of cell masses, and an expansion culture that expands and cultures the plurality of cell masses divided by the first dividing mechanism 60
- a device 70, a second dividing mechanism 80 that divides a cell mass composed of stem cells expanded and cultured in the expansion culture device 70 into a plurality of cell masses, and a cell soul transport mechanism 90 that sequentially sends a plurality of cell souls to the package device 100. And comprising.
- the initialization culture apparatus 50 can store a well plate therein.
- the initialization culture apparatus 50 includes a pipetting machine.
- the initialization culture apparatus 50 receives the solution containing the inducer-introduced cells from the introduced cell liquid supply path 31, and distributes the solution to the wells with a pipetting machine.
- the initialization culture apparatus 50 adds stem cell medium such as StemFit (registered trademark, Ajinomoto Co., Inc.) on the third, fifth, and seventh days after distributing the inducer-introduced cells to the wells.
- StemFit registered trademark, Ajinomoto Co., Inc.
- Basic fibroblast growth factor (basic FGF) may be added to the medium as a supplement.
- sustained-release beads that continue to supply FGF-2 (basic FGF, bFGF, FGF-b), such as StemBeads FGF2 (Funakoshi), may be added to the medium.
- FGF basic FGF, bFGF, FGF-b
- a heparin mimetic polymer may be conjugated to FGF to stabilize FGF.
- TGF- ⁇ transforming growth factor beta
- Activin activin
- the initialization culture apparatus 50 changes the medium on the 9th day after distributing the inducer-introduced cells to the wells, and thereafter, every 2 days until the cell mass (colony) of iPS cells exceeds 1 mm. Exchange. It should be noted that exchanging the medium includes partially replacing the medium and supplying the medium.
- the initialization culture apparatus 50 collects the cell mass with a pipetting machine, and adds a trypsin alternative recombinant enzyme such as TrypLE Select (registered trademark, Life Technologies) to the collected cell mass. Furthermore, the initialization culture apparatus 50 puts the container containing the collected cell mass into an incubator, and reacts the cell mass with the trypsin alternative recombinant enzyme for 10 minutes at 37 ° C. and 5% CO 2 . In the case where the cell mass is physically broken, there is no need to use a trypsin alternative recombinant enzyme. For example, the initialization culture apparatus 50 crushes the cell mass by pipetting with a pipetting machine.
- a trypsin alternative recombinant enzyme such as TrypLE Select (registered trademark, Life Technologies)
- the initialization culture apparatus 50 may pass the cell mass through a pipe provided with a filter or a pipe whose inner diameter is intermittently changed, like the introduced cell feeding path 31 shown in FIG. The lump may be crushed. Thereafter, the initialization culture apparatus 50 adds a pluripotent stem cell medium such as StemFit (registered trademark, Ajinomoto Co., Inc.) to the solution containing the crushed cell mass.
- a pluripotent stem cell medium such as StemFit (registered trademark, Ajinomoto Co., Inc.)
- the culture in the initialization culture apparatus 50 may be performed in a CO 2 permeable bag instead of the well plate. Further, the culture may be an adhesion culture or a suspension culture. In the case of suspension culture, stirring culture may be performed. Further, the medium may be agar-like. Examples of the agar-like medium include gellan gum polymer. When an agar-like medium is used, cells do not sink or adhere, so there is no need to stir while floating culture, and a single cell mass derived from one cell can be produced. The culture in the initialization culture apparatus 50 may be hanging drop culture.
- the initialization culture apparatus 50 may include a first culture medium supply apparatus that supplies a culture medium containing a culture solution to a well plate or a CO 2 permeable bag.
- the first medium supply device collects the culture solution in the well plate or the CO 2 permeable bag, filters the culture solution using a filter or a dialysis membrane, and reuses the purified culture solution. Good. At that time, a growth factor or the like may be added to the culture medium to be reused.
- the initialization culture device 50 may further include a temperature management device that manages the temperature of the culture medium, a humidity management device that manages the humidity in the vicinity of the culture medium, and the like.
- the initialization culture apparatus 50 for example, cells are placed in a culture medium-permeable bag 301 such as a dialysis membrane as shown in FIG. 4, and the culture solution-permeable bag 301 is inserted into the culture medium-impermeable CO 2 permeation medium.
- the culture solution may be put in the bags 301 and 302 in the sex bag 302.
- the initialization culture apparatus 50 prepares a plurality of bags 302 containing fresh culture solutions, and changes the bag 302 containing cells 301 containing cells into a bag containing fresh culture solutions every predetermined period. It may be replaced with 302.
- the culture method in the initialization culture apparatus 50 is not limited to the above method, and a floating culture device as shown in FIG. 5 may be used.
- the suspension incubator shown in FIG. 5 includes a dialysis tube 75 in which inducer-introduced cells and a gel medium are placed, and a container 76 in which the dialysis tube 75 is placed and the gel medium is placed around the dialysis tube 75.
- the suspension incubator may include a pH sensor that measures the hydrogen ion index (pH) of the gel medium around the dialysis tube 75.
- the dialysis tube 75 is made of a semipermeable membrane, and allows, for example, a ROCK inhibitor to pass therethrough.
- the fractional molecular weight of the dialysis tube 75 is 0.1 KDa or more, 10 KDa or more, or 50 KDa or more.
- the dialysis tube 75 includes, for example, cellulose ester, ethyl cellulose, cellulose esters, regenerated cellulose, polysulfone, polyacrylonitrile, polymethyl methacrylate, ethylene vinyl alcohol copolymer, polyester polymer alloy, polycarbonate, polyamide, cellulose acetate, cellulose diester. It consists of acetate, cellulose triacetate, copper ammonium rayon, saponified cellulose, hemophane film, phosphatidylcholine film, and vitamin E coating film.
- a conical tube such as a centrifuge tube can be used.
- the container 76 is made of polypropylene, for example.
- the container 76 may be CO 2 permeable.
- G-Rex registered trademark, Wilson Wolf
- the inducer-introduced cells are placed in the dialysis tube 75.
- the gel medium is not agitated.
- the gel medium does not contain feeder cells.
- the dialysis tube 75 may be connected to a liquid supply path for supplying a medium containing cells into the dialysis tube 75.
- the dialysis tube 75 may be connected to a liquid supply path for supplying a medium containing cells in the dialysis tube 75 to the outside of the container.
- the gel medium may be, for example, a blood cell medium or a medium for stem cells, and a deacylated gellan gum having a final concentration of 0.5 wt% to 0.001 wt%, 0.1 wt% to 0.005 wt%, or 0.05 It is prepared by adding to 0.01 to 0.01% by weight. For example, at the beginning of initialization culture, a gel medium prepared from a blood cell medium is used, and thereafter, a gel medium prepared from a stem cell medium is used.
- stem cell medium for example, human ES / iPS medium such as Primate ES Cell Medium (ReproCELL) can be used.
- the medium for stem cells is not limited to this, and various stem cell culture media can be used.
- Primate ES Cell Medium Reprostem, ReproFF, ReproFF2, ReproXF (Reprocell), mTeSR1, TeSR2, TeSRE8, ReproTeSR (STEMCELL Technologies), and PruriSTM (registered trademark).
- Gel medium is gellan gum, hyaluronic acid, rhamzan gum, diyutan gum, xanthan gum, carrageenan, fucoidan, pectin, pectic acid, pectinic acid, heparan sulfate, heparin, heparitin sulfate, keratosulfate, chondroitin sulfate, deltaman sulfate, rhamnan sulfate, and You may contain the at least 1 sort (s) of high molecular compound selected from the group which consists of those salts. Moreover, the gel culture medium may contain methylcellulose. By containing methylcellulose, aggregation between cells is further suppressed.
- the gel medium can be poly (glycerol monomethacrylate) (PGMA), poly (2-hydroxypropyl methacrylate) (PHPMA), Poly (N-isopropylacrylamide) (PNIPAM), amine terminated, carboxylic acid terminated, maleimide terminated, N-hydroxysuccinimide ( NHS) ester terminated, triethoxysilane terminated, Poly (N-isopropylacrylamide-co-acrylamide), Poly (N-isopropylacrylamide-co-acrylic acid), Poly (N-isopropylacrylamide-co-butylacrylate), Poly (N-isopropylacrylamide-co- It may contain a small number of temperature sensitive gels selected from methacrylic acid, Poly (N-isopropylacrylamide-co-methacrylic acid-co-octadecyl acrylate), and N-isopropylacrylamide.
- PGMA poly (glycerol monomethacrylate)
- the gel medium put in the dialysis tube 75 may not contain the ROCK inhibitor.
- the gel medium placed around the dialysis tube 75 in the container 76 includes, for example, a ROCK inhibitor having a final concentration of 1000 ⁇ mol / L to 0.1 ⁇ mol / L, 100 ⁇ mol / L to 1 ⁇ mol / L, or 5 ⁇ mol / L. It is added every day so that it becomes 20 ⁇ mol / L or less.
- the gel medium may or may not contain a growth factor such as basic fibroblast growth factor (bFGF) or TGF- ⁇ .
- a growth factor such as basic fibroblast growth factor (bFGF) or TGF- ⁇ .
- the gel medium around the dialysis tube 75 in the container 76 is replaced. It should be noted that exchanging the medium includes partially replacing the medium and supplementing the medium. In this case, the gel medium need not be replenished in the dialysis tube 75. Alternatively, the gel medium is supplied into the dialysis tube 75 while the cells are suspended in the dialysis tube 75. In this case, it is not necessary to replenish the gel medium around the dialysis tube 75 in the container 76.
- the stem cell production system replaces or replenishes the gel medium around the dialysis tube 75 in the container 76 using a supplement medium feeding pump 77 as a medium supplement device.
- a supplement medium feeding pump 77 As the replenishing medium feeding pump 77, a pump used for infusion can be used.
- the supplemental medium feeding pump 77 and the container 76 of the floating incubator are connected by a feeding tube 78.
- the replenishing medium feeding pump 77 feeds the gel medium into the container 76 of the floating incubator via the feeding tube 78.
- a waste liquid tube 79 is connected to the container 76 of the floating incubator.
- the gel medium in the container 76 of the suspension incubator is discharged through the waste liquid tube 79.
- the gel medium in the container 76 of the floating incubator may be discharged, for example, by the pressure of the fresh gel medium supplied by the supplement medium feeding pump 77, or may be discharged using gravity, It may be discharged by a discharge pump.
- the temperature of the gel medium fed from the supplemented medium feeding pump 77 to the incubator is set so that the temperature of the gel medium in the incubator does not change abruptly, for example.
- the temperature of the gel medium in the incubator is 37 ° C
- the temperature of the gel medium fed to the incubator is also set to 37 ° C.
- the medium before being fed to the incubator may be refrigerated at a low temperature such as 4 ° C. in the refrigerated storage unit.
- replenishment is performed so that the amount of gel medium fed into the container 76 of the suspension incubator by the supplement medium feeding pump 77 is the same as the amount of gel medium discharged from the container 76 of the suspension incubator.
- the medium feeding pump 77 is controlled.
- the replenishing medium feeding pump 77 may always feed the gel medium into the container 76 of the floating incubator, or may feed the gel medium at an appropriate interval.
- the flow rate of the gel medium to be fed may or may not be constant.
- the culture medium and the cell mass in the culture medium are monitored by the imaging device, and the flow rate of the fed gel medium is increased or decreased depending on the state of the culture medium and the cell mass in the medium. May be.
- the gel medium feeding may be started and ended according to the state of the medium and the cell mass in the medium without always feeding the gel medium.
- the flow rate of the gel medium to be fed may be increased or decreased depending on the state of the medium and the cell mass in the medium.
- the flow rate of the gel medium fed to the incubator is set so that the cells are not damaged.
- a fresh medium is fed into the incubator with the supplemental medium feeding pump 77, and the old medium is discharged from the incubator, thereby removing waste from the incubator and adjusting the pH in the medium appropriately. It is possible to supply components necessary for culturing the cells while keeping within the range. Thereby, it is possible to keep the state of a culture medium in a state near constant.
- FIG. 6 shows an example in which the supplemental medium feeding pump 77 and the suspension culture vessel container 76 are connected by a feeding tube 78.
- the replenishing medium feeding pump 77 and the inside of the dialysis tube 75 in the container 76 of the floating incubator may be connected by a feeding tube 78.
- the stem cell production system shown in FIG. 1 may further include an initialization culture imaging apparatus such as a photographic camera or a video camera for imaging culture in the initialization culture apparatus 50.
- an initialization culture imaging apparatus such as a photographic camera or a video camera for imaging culture in the initialization culture apparatus 50.
- a colorless medium is used as the medium used in the initialization culture apparatus 50
- a pH indicator such as phenol red may be included.
- the stem cell manufacturing system captures the cells in the initialization culture apparatus 50 to capture the induced cells. You may further provide the guidance state monitoring apparatus which calculates a ratio.
- the induced state monitoring device may specify the ratio of induced cells by antibody immunostaining or RNA extraction.
- the stem cell production system may include an uninduced cell removal device that removes uninduced cells by a magnetic cell separation method, flow cytometry, or the like.
- the existence range of the cells spreads in a plane. Therefore, if the imaging device and the petri dish are arranged so that the optical axis of the lens of the imaging device is orthogonal to the dish surface, it is possible to focus on almost all cells on the petri dish.
- suspension culture is performed by suspending cells in a culture medium
- the range of cells is expanded three-dimensionally, resulting in variations in the distance in the optical axis direction from the imaging device to each cell. This can make it difficult to focus on all cells without using a lens.
- the depth of field is increased by using a bright lens (a lens having a small F value) or by illuminating the object to be measured with the illumination of the lens being as narrow as possible. It is possible.
- a plurality of images may be picked up while the focal position of the lens is changed little by little, and the picked up images may be combined to obtain a pseudo deeply focused image.
- each of the plurality of images is an image in which a focused cell and a blurred cell that is not in focus are mixed. For this reason, a single partial image may be generated by collecting focused partial images from a plurality of images.
- a telecentric lens 172 may be disposed between the initialization culture imaging apparatus 171 and a subject such as a cell in the suspension culture apparatus.
- the telecentric lens 172 has a distance from the initialization culture imaging apparatus 171 to each of a plurality of cells in the suspension incubator in order to make the principal ray passing through the center of the lens aperture from a subject such as a cell parallel to the lens optical axis. Even if it is not, the size of the imaged cell does not change according to the distance.
- FIG. 9 is a schematic view of the suspension incubator shown in FIG. 8 as viewed from above.
- the container 76 shown in FIG. 8 is omitted.
- the cell observation illumination light source 173 is arranged in a direction perpendicular to the optical axis of the initialization culture imaging apparatus 171 or in a direction close to the imaging apparatus from the perpendicular direction. It is preferable to use a scattered light illumination method in which illumination light is irradiated to the cell from the illumination light source 173 for cell observation. Thereby, the scattered light by the illumination light hitting the cell reaches the initialization culture imaging apparatus 171, but the illumination light that did not hit the cell does not pass through the culture medium and reach the initialization culture imaging apparatus 171.
- FIG. 10 is an example of a cell image captured by the scattered light illumination method.
- the medium portion is relatively dark and the cell portion is relatively bright.
- the stem cell manufacturing system may include a central processing unit (CPU) 500 including an image processing unit 501 that processes an image captured by the initialization culture imaging apparatus 171. Good.
- An input device 401 such as a keyboard and a mouse and an output device 402 such as a monitor may be connected to the CPU 500.
- the CPU 500 receives an image from the initialization culture imaging apparatus 171 via a bus, an image interface, and the like.
- the image processing unit 501 may include a contour defining unit 511 that defines a contour of a cell or a cell mass in a cell image.
- FIG. 12 is an example of an iPS cell cluster image magnified and captured through a macro zoom lens or the like. In the image shown in FIG. 12, the portion that appears as a white lump is the iPS cell lump, and the dark portion in the background is the medium.
- the luminance value of a pixel having a luminance value equal to or higher than a predetermined threshold value is set to a maximum luminance value such as 255, and is less than the predetermined threshold value.
- a binarization process for replacing the luminance value of a pixel having a luminance value with a minimum luminance value such as 0 is added to the image, as shown in FIG.
- the inside also becomes black with the lowest luminance, and a portion where the inside of the cell mass and the portion of the medium are connected can be formed. Therefore, the binarization process may not be able to extract cells or cell masses.
- the contour defining unit 511 of the stem cell manufacturing system allows a high-frequency component equal to or higher than a predetermined frequency included in the spatial frequency to pass through the cell image, and reduces the low frequency lower than the predetermined frequency.
- a high-pass filter that blocks frequency components and sets the luminance value to a minimum value such as 0 is applied.
- the cell or cell mass portion contains a lot of high frequency components contained in the spatial frequency, and the medium portion contains few high frequency components contained in the spatial frequency. Therefore, as shown in FIG. 14, in the cell image to which the high-pass filter is applied, the luminance value of the medium portion is the lowest value, for example, 0, and the luminance value of the cell or cell mass portion is low. The value remains as it is. Therefore, it is possible to regard a portion where the luminance is not the lowest value as a cell or a cell mass.
- the contour defining unit 511 of the stem cell manufacturing system applies the watershed algorithm to the image to which the high-pass filter is applied.
- the watershed algorithm regards the luminance gradient of the image as a mountain undulation, and considers the area where water flows from a high position (position with a high luminance value) to a low position (position with a low luminance value) as one area. Then, the image is divided.
- the contour defining unit 511 of the stem cell manufacturing system converts the image into the image by the distance transform method before applying the watershed algorithm.
- the distance transform method is an image conversion method in which the luminance value of each pixel of an image is replaced according to the distance to the nearest background pixel. For example, as shown in FIG. 15A, in the image to which the high-pass filter is applied, the luminance value of the medium region is collectively converted to 255 which is the maximum luminance value, and as shown in FIG. On a white background. Further, the luminance value of each pixel inside the cell region is converted to 0 or more and less than 255 according to the distance to the nearest background pixel. For example, the brightness value is lowered as the distance from the nearest background pixel increases.
- the contour defining unit 511 of the stem cell manufacturing system applies a watershed algorithm to the image converted by the distance transform method.
- the image shown in FIG. 15 (b) when the dark part with low brightness is regarded as a mountain foot and water is dropped from above in the direction perpendicular to the image, as shown by the arrow in FIG.
- the broken line in FIG. 15 (c) the area where water flowing from various directions collides is regarded as a valley, and the cell region is divided at the bottom of the valley. To do.
- the image shown in FIG. 16 is obtained.
- the image shown in FIG. 17 is obtained.
- the image shown in FIG. 18 is obtained.
- the cell mass existing in each region divided by the dividing line can be regarded as a single cell mass, not a mass in contact with a plurality of cell masses. Therefore, in each region, as shown in FIG. 19, it is possible to accurately extract one cell mass by extracting the outline of the cell mass.
- the image processing unit 501 of the stem cell manufacturing system may further include a cell evaluation unit 512.
- the cell evaluation unit 512 may issue a warning when the size of each cell mass is outside the appropriate range. Moreover, the cell evaluation part 512 may output that it is a timing which transfers to expansion culture, when the magnitude
- the image processing unit 501 of the stem cell manufacturing system may further include a statistical processing unit 513 that statistically processes information obtained from the image processed image.
- FIG. 20 is an example in which image processing is performed on the image shown in FIG.
- FIG. 21 is an example of a cell cluster size histogram created based on the image shown in FIG. In this way, by acquiring cell information continuously and regularly, it is possible to quantitatively grasp the growth degree, number, density, etc. of the cell mass, and stabilize the culture results. It is possible.
- the supply rate of the medium in the initialization culture apparatus 50 may be changed according to the calculated number of cell clusters. For example, the supply rate of the medium may be increased as the number of cell clusters increases.
- the image processing unit 501 of the stem cell manufacturing system calculates the turbidity of the medium from the image of the medium, and calculates the density of the cell mass in the medium based on the turbidity of the medium.
- a part 514 may be further provided.
- the CPU 500 is connected to a relational storage device 403 including a volatile memory or a nonvolatile memory.
- the relationship storage device 403 stores, for example, the relationship between the turbidity of the culture medium and the density of the cell mass in the culture medium that is acquired in advance.
- the density calculation unit 514 reads the relationship between turbidity and density from the relationship storage device 403. Further, the density calculation unit 514 calculates the density of the cell mass value in the medium based on the turbidity value of the medium calculated from the image of the medium and the relationship between the turbidity and the density. Thereby, it is possible to measure the density of the cell mass non-destructively without collecting the cell mass from the medium.
- the density calculation unit 514 may output that it is time to shift to expansion culture when the density of the cell mass becomes a predetermined threshold value or more. Furthermore, the density calculation unit 514 may calculate the density of the cell mass in the medium over time and calculate the growth rate of the cell mass. An abnormal growth rate may indicate that the cell is abnormal. For example, the density calculation unit 514 issues a warning when an abnormal growth rate is calculated. In this case, cell culture may be stopped.
- the density of cell mass in the medium becomes high and the distance between the cell masses becomes too close, a plurality of cell masses may adhere to each other to form one large cell mass.
- nutrients and hormones contained in the medium may not reach the inside, and the cells inside may differentiate.
- the density of the cell mass in the medium is lower than the preferred range, the growth rate of the cell mass and the ability to form the cell mass may be significantly reduced.
- the density calculation unit 514 since the density of the cell mass can be calculated, it is possible to easily determine whether the density of the cell mass is within a suitable range. . When the density of the cell mass is lower than a suitable range, for example, it may be determined to stop the culture. Further, the medium supply rate in the initialization culture apparatus 50 may be changed according to the calculated cell mass density. For example, the supply rate of the medium may be increased as the density of the cell mass increases.
- the medium observation illumination light source 174 is placed at a position facing the initialization culture photographing apparatus 171 with the floating incubator interposed therebetween. May be arranged.
- the culture medium observation illumination light source 174 for example, a surface light source can be used, and the culture medium observation illumination light source 174 emits, for example, white parallel light.
- the illumination light emitted from the culture medium observation illumination light source 174 passes through the culture medium and enters the initialization culture imaging apparatus 171, so that the culture culture imaging apparatus 171 can image the color of the culture medium.
- the pH of the medium is set to a constant value in the vicinity of 6.8 to 7.2.
- a pH reagent such as phenol red is added to the medium. Phenol red changes depending on the pH of the medium. If the concentration of carbon dioxide in the gas in contact with the medium is not sufficient, the carbon dioxide derived from bicarbonate contained in the medium and the carbon dioxide in the gas will not equilibrate, so the medium becomes alkaline and the color of the medium becomes reddish purple. Become.
- wastes mainly composed of lactic acid discharged by cells accumulate, the medium becomes acidic and the color of the medium becomes yellow.
- the acidity of the medium also means that nutrients in the medium are depleted.
- the image processing unit 501 of the stem cell manufacturing system may further include a medium evaluation unit 515 that evaluates the medium based on the image of the medium illuminated with the medium observation illumination light source.
- the medium evaluation unit 515 performs image processing on an image of the medium, and expresses the color of the medium with three parameters of hue (Hue), saturation (Saturation), and lightness (Value) by HSV.
- hue is a parameter corresponding to a concept generally called “hue” or “color”.
- Hue is generally expressed in units of angle.
- FIG. 23 is an example of a graph showing the relationship between the change in the hue of the medium and the change in the pH of the medium when cells are cultured for a long time without changing the medium.
- the pH of the medium was close to 7.7, but with the passage of time, the pH of the medium decreased to close to 7.1.
- the hue of the medium was close to 40 immediately after the start of the culture, but increased to nearly 60 over time.
- the hue of the medium correlates with the culture time and the pH of the medium. Therefore, the medium evaluation unit 515 shown in FIG. 11 determines the state of the medium by monitoring the hue of the medium.
- the relationship storage device 403 stores the relationship between the color of the culture medium and the pH of the culture medium acquired in advance.
- the culture medium evaluation unit 515 reads the relationship between hue and pH from the relationship storage device 403. Further, the medium evaluation unit 515 calculates the pH value of the photographed medium based on the hue value of the medium calculated from the image of the medium and the relationship between the hue and the pH. For example, the medium evaluation unit 515 may acquire an image of the medium over time and calculate the pH value of the medium.
- the pH of the medium may be measured by a pH sensor 271 as shown in FIG. Further, the temperature of the culture medium may be measured with a thermometer 272. In this case, the medium evaluation unit 515 may receive the value of the medium pH from the pH sensor 271 and may receive the value of the medium temperature from the thermometer 272.
- the medium evaluation unit 515 may determine that the replacement of the medium is promoted when the color of the medium or the pH of the medium is outside a predetermined range, or may determine that the medium is contaminated. It should be noted that exchanging the medium includes partially replacing the medium and supplementing the medium.
- the medium evaluation unit 515 determines that the medium color or the medium pH is outside the predetermined range
- the medium around the dialysis tube 75 of the floating incubator is replaced by, for example, the supplement medium feeding pump 77 shown in FIG. Is done.
- the replacement speed of the medium around the dialysis tube 75 of the floating culture device by the supplemented medium feeding pump 77 is increased, and the flow rate of the medium to be replaced is increased.
- the medium evaluation unit 515 may calculate the cell growth rate from the change rate of the hue of the medium.
- the relationship storage device 403 stores the relationship between the change rate of the hue of the medium and the growth rate of the cells, which is acquired in advance.
- the culture medium evaluation unit 515 reads the relationship between the hue change rate and the growth rate from the relationship storage device 403. Further, the medium evaluation unit 515 calculates a value of the cell growth rate based on the calculated hue change rate value and the relationship between the hue change rate and the growth rate.
- the medium evaluation unit 515 may control the temperature management device to change the temperature around the incubator or the temperature of the supplied medium. Good. For example, when the temperature of the culture medium is lower than a predetermined range, the culture medium evaluation unit 515 controls the temperature management device so that the temperature of the culture medium increases. Further, when the temperature of the culture medium is higher than the predetermined range, the culture medium evaluation unit 515 controls the temperature management device so that the temperature of the culture medium is lowered.
- a first cell mass feeding channel 51 is connected to the initialization culture apparatus 50 shown in FIG.
- the initialization culture apparatus 50 sends the trypsin alternative recombinant enzyme and the cell mass-containing liquid to the first cell mass feeding channel 51 using a pump or the like.
- the first cell mass feeding channel 51 has an inner diameter through which only induced cells having a size smaller than a predetermined size are passed, and is connected to a branch flow path for removing uninduced cells having a size larger than a predetermined size. It may be.
- the cell mass can be recovered by sucking up the gel medium.
- the pump that sends the solution containing the cell mass to the first cell mass feeding channel 51 has a value of the cell mass size calculated by the cell evaluation unit 512 shown in FIG. Alternatively, it may be driven.
- the pump that sends the solution containing the cell mass to the first cell mass feeding channel 51 shown in FIG. 1 has, for example, the density value of the cell mass calculated by the density calculation unit 514 shown in FIG. When it becomes above, it may be driven.
- the inner wall of the first cell mass feeding channel 51 shown in FIG. 1 may be coated with poly-HEMA so that cells do not adhere to make it non-adhesive.
- a material in which cells are difficult to adhere may be used as the material of the first cell mass feeding channel 51.
- the conditions in the first cell mass feeding channel 51 can be controlled in the housing 200. Equal to the measured temperature and CO 2 concentration.
- the back flow prevention valve may be provided in the 1st cell mass liquid supply path 51 from a viewpoint of contamination prevention.
- the first cell mass feeding channel 51 is connected to the first dividing mechanism 60.
- the first dividing mechanism 60 includes, for example, a mesh. When the cell mass contained in the solution passes through the mesh by water pressure, it is divided into a plurality of cell masses having the size of each hole of the mesh. For example, if the size of each hole of the mesh is uniform, the size of the plurality of cell clusters after the division is also substantially uniform.
- the first dividing mechanism 60 may include a nozzle. For example, by finely processing the inside of a substantially conical nozzle in a stepped manner, the cell mass contained in the solution is divided into a plurality of cell masses when passing through the nozzle.
- the first dividing mechanism 60 may include a cell clump divider including a terminal block 61, a connecting block 62, and a tip block 63, as shown in FIG.
- a cell clump divider including a terminal block 61, a connecting block 62, and a tip block 63, as shown in FIG.
- Each of the end block 61, the connecting block 62, and the tip block 63 is provided with a through-hole through which a medium containing a cell mass flows.
- the cell clump divider may include one connection block 62 or a plurality of connection blocks 62.
- a recess 62a is provided at the first end of the connection block 62
- a protrusion 62b is provided at the second end opposite to the first end of the connection block 62.
- the convex part 62b is cylindrical, for example. As shown in FIGS. 25 and 26, when there are a plurality of connection blocks 62, the protrusions 62 b are engaged with the recesses 62 a of the adjacent connection blocks 62.
- the side wall of the convex portion 62b shown in FIG. 24 may be smooth, or may be provided with a male screw.
- the inner wall of the recess 62a may be smooth or provided with a female screw.
- the through holes provided in the connecting block 62 communicate with the first large hole diameter portion 62c communicating with the recess 62a and the small hole diameter portion communicating with the first large hole diameter portion 62c and having a smaller hole diameter than the first large hole diameter portion 62c.
- 62d and a second large hole diameter part 62e that communicates with the small hole diameter part 62d has a larger hole diameter than the small hole diameter part 62d, and has an opening at the tip of the convex part 62b.
- the cross-sectional shapes of the first large hole diameter portion 62c, the small hole diameter portion 62d, and the second large hole diameter portion 62e are, for example, a circle.
- the hole diameter of the first large hole diameter part 62c and the hole diameter of the second large hole diameter part 62e are, for example, the same. Accordingly, as shown in FIGS. 25 and 26, when there are a plurality of connection blocks 62, and the plurality of connection blocks 62 are connected, the second large hole diameter portion 62 e becomes the first large hole diameter of the adjacent connection block 62.
- the portion 62c communicates smoothly.
- the hole diameters of the first and second large hole diameter portions 62c and 62e shown in FIG. 24 are, for example, not less than 2.0 mm and not more than 4.0 mm, but are not particularly limited.
- the hole diameter of the small hole diameter part 62d is, for example, not less than 0.4 mm and not more than 1.2 mm, but is not particularly limited.
- a step is formed in a portion continuing from the first large hole diameter portion 62c to the small hole diameter portion 62d. Further, a step is also formed in a portion continuing from the small hole diameter portion 62d to the second large hole diameter portion 62e.
- the side wall of the step may be perpendicular to the central axis of the through hole, or may be inclined to less than 90 °.
- the central axis of the first and second large hole diameter portions 62c and 62e of the connection block 62 may coincide with the central axis of the small hole diameter portion 62d.
- the central axis of the first and second large hole diameter portions 62c and 62e of the connection block 62 and the central axis of the small hole diameter portion 62d may be offset.
- a recess 63a is provided at the first end of the tip block 63 shown in FIG. 24, and a nozzle 63b is provided at the second end of the tip block 63 opposite to the first end.
- the concave portion 63 a of the leading end block 63 is engaged with the convex portion 62 b of the connecting block 62.
- the inner wall of the recess 63a may be smooth or provided with a female screw.
- the through hole provided in the tip block 63 communicates with the large hole diameter portion 63c that communicates with the recess 63a, the large hole diameter portion 63c, has a smaller hole diameter than the large hole diameter portion 63c, and has a small hole diameter that has an opening at the tip of the nozzle portion 63b. 63d.
- Each cross-sectional shape of the large hole diameter part 63c and the small hole diameter part 63d is, for example, a circle.
- the hole diameter of the large hole diameter part 63c of the tip block 63 and the hole diameter of the second large hole diameter part 62e of the connecting block 62 are, for example, the same. Accordingly, as shown in FIGS. 25 and 26, when the connecting block 62 and the tip block 63 are connected, the second large hole diameter portion 62 e of the connecting block 62 has a large hole diameter of the adjacent tip block 63.
- the portion 63c communicates smoothly.
- the hole diameter of the large hole diameter portion 63c shown in FIG. 24 is, for example, not less than 2.0 mm and not more than 4.0 mm, but is not particularly limited.
- the hole diameter of the small hole diameter portion 63d is, for example, not less than 0.4 mm and not more than 1.2 mm, but is not particularly limited.
- a step is formed in a portion continuing from the large hole diameter portion 63c to the small hole diameter portion 63d.
- the side wall of the step may be perpendicular to the central axis of the through hole, or may be inclined to less than 90 °.
- a concave portion 61 a is provided at the first end of the terminal block 61, and a convex portion 61 b is provided at the second end facing the first end of the terminal block 61.
- the protruding portion 61 b of the end block is engaged with the recessed portion 62 a of the connecting block 62.
- the side wall of the convex portion 61b of the end block may be smooth or provided with a male screw.
- the through hole provided in the terminal block 61 has at least a large hole diameter portion 61c that communicates with the concave portion 61a and has an opening at the tip of the convex portion 61b.
- Each cross-sectional shape of the recess 61a and the large hole diameter portion 61c is, for example, a circle.
- the hole diameter of the large hole diameter portion 61c of the end block 61 and the hole diameter of the second large hole diameter portion 62e of the connection block 62 are, for example, the same.
- the large hole diameter portion 61c of the end block 61 is replaced with the large hole diameter portion 62c of the adjacent connecting block 62. It communicates smoothly.
- the hole diameter of the large hole diameter portion 61c shown in FIG. 24 is, for example, not less than 2.0 mm and not more than 4.0 mm, but is not particularly limited.
- Examples of the material of the end block 61, the connecting block 62, and the tip block 63 include, but are not limited to, resins such as polypropylene.
- an insertion nozzle 64 is inserted into the recess 61a of the end block 61.
- the insertion nozzle 64 is connected to a suction / discharger for sucking and discharging the medium containing the cell mass directly or via a tube or the like.
- the end block 61, the connecting block 62, and the tip block 63 are connected, and the nozzle portion 63b of the tip block 63 is stabbed into the medium containing the cell mass, and the medium is aspirated and discharged once by the suction / discharger, or the medium
- the medium containing the cell mass reciprocates in the through holes in the connection block 62 and the tip block 63. Since the through holes in the connection block 62 and the tip block 63 are provided with steps, the cell mass in the medium is efficiently divided into small cell masses.
- the cell mass has been divided by a technician using a pipetman or the like.
- the size of the divided cell mass was non-uniform.
- the size of the cell mass obtained varied. If the cell mass after division is too large, nutrients and hormones contained in the medium may not reach the inside, and the cells may differentiate. If the cell mass is too small, cell death or karyotypic abnormalities may occur when a ROCK inhibitor is not used.
- the cell clump divider as shown in FIGS. 25, 26 and 27 is used, the cell clump is divided into cell clumps of uniform size as shown in FIG. 32 (b). It is possible.
- the medium When dividing the cell mass using the cell mass divider, the medium may be trypsin, TrypLE Express (registered trademark, ThermoFisher SCIENTIFIC), TrypLE Select (registered trademark, ThermoFisher SCIENTIFIC), or TrypLE registered trademark.
- An enzyme such as ThermoFisher SCIENTIFIC may be included. It is also possible to break down the cell mass into single cells by increasing the number of connecting blocks 62 or increasing the pressure when the medium is sucked and discharged.
- the cell clump divider may not be configured by a plurality of blocks.
- the cell mass divider has an integrated columnar shape having a through hole inside as shown in FIG. 28, and the through hole through which the medium containing the cell mass flows has large pore diameter portions 65a, 65c, 65e, 65 g may communicate with the large hole diameter portions 65 a, 65 c, 65 e, 65 g, and may alternately have small hole diameter portions 65 b, 65 d, 65 f having a smaller hole diameter than the large hole diameter portions 65 a, 65 c, 65 e, 65 g. .
- the central axes of the large hole diameter portions 65a, 65c, 65e, and 65g and the central axes of at least some of the small hole diameter portions 65b, 65d, and 65f may be offset. .
- the cell mass in the medium may be divided into small cell masses by passing the medium only once through the cell mass divider.
- the culture medium is discharged from the insertion portion 66b through the insertion portion 66a through the through hole, and the cell mass contained in the culture medium is divided therebetween.
- the central axes of the large hole diameter portions 65a, 65c, 65e, and 65g and the central axes of at least some of the small hole diameter portions 65b, 65d, and 65f may be offset. .
- An expansion culture device 70 is connected to the first dividing mechanism 60 shown in FIG.
- the solution containing the cell mass divided by the first division mechanism 60 is sent to the expansion culture device 70.
- the expansion culture apparatus 70 can store a well plate therein.
- the expansion culture apparatus 70 includes a pipetting machine.
- the expansion culture apparatus 70 receives a solution containing a plurality of cell clusters from the first dividing mechanism 60, and distributes the solution to the wells with a pipetting machine. After the cell mass is distributed to the well, the expansion culture apparatus 70 cultivates the cell mass at 37 ° C. and 5% CO 2 for about 8 days, for example. Further, the expansion culture apparatus 70 performs medium exchange as appropriate.
- the expansion culture apparatus 70 adds a trypsin alternative recombinant enzyme such as TrypLE Select (registered trademark, Life Technologies) to the cell mass. Furthermore, the expansion culture apparatus 70 puts the container containing the cell mass in an incubator and reacts the cell mass with the trypsin alternative recombinant enzyme for 1 minute at 37 ° C. and 5% CO 2 . In the case where the cell mass is physically broken, there is no need to use a trypsin alternative recombinant enzyme. For example, the expansion culture apparatus 70 crushes the cell mass by pipetting with a pipetting machine.
- a trypsin alternative recombinant enzyme such as TrypLE Select (registered trademark, Life Technologies)
- the expansion culture device 70 may pass the cell mass through a pipe provided with a filter, or a pipe whose inner diameter is intermittently changed, like the introduced cell liquid supply path 31 shown in FIG. 2 or FIG. May be crushed. Thereafter, the expansion culture device 70 adds a medium such as a maintenance culture medium to the solution in which the cell mass is placed. Further, in the case of adhesion culture, the expansion culture apparatus 70 peels off the cell mass from the container with an automatic cell scraper or the like, and the solution containing the cell mass is transferred to the first dividing mechanism 60 via the expansion culture liquid supply path 71. Send to.
- a medium such as a maintenance culture medium
- the culture in the expansion culture apparatus 70 may be performed in a CO 2 permeable bag instead of the well plate.
- the culture may be adhesion culture, suspension culture, or hanging drop culture.
- stirring culture may be performed.
- the medium may be agar-like. Examples of the agar-like medium include gellan gum polymer. When an agar-like medium is used, cells do not sink or adhere to each other, so that it is not necessary to stir while being a suspension culture.
- the expansion culture device 70 may include a second medium supply device for supplying a culture solution to a well plate or a CO 2 permeable bag.
- the second medium supply device collects the culture solution in the well plate or the CO 2 permeable bag, filters the culture solution using a filter or a dialysis membrane, and reuses the purified culture solution. Good. At that time, a growth factor or the like may be added to the culture medium to be reused.
- the expansion culture device 70 may further include a temperature management device that manages the temperature of the culture medium, a humidity management device that manages the humidity in the vicinity of the culture medium, and the like.
- the expansion device 70 for example, cells were placed in culture permeable bag 301 of the dialysis membrane such as shown in FIG. 4, the culture liquid permeable bag 301, the culture liquid impermeable CO 2 permeability
- the culture solution may be put in the bags 301 and 302 in the sex bag 302.
- the initialization culture apparatus 50 prepares a plurality of bags 302 containing fresh culture solutions, and changes the bag 302 containing cells 301 containing cells into a bag containing fresh culture solutions every predetermined period. It may be replaced with 302.
- the culture method in the expansion culture apparatus 70 is not limited to the above-described method, and a suspension culture apparatus as shown in FIG. 5 may be used similarly to the culture method in the initialization culture apparatus 50.
- a suspension culture apparatus as shown in FIG. 5 may be used similarly to the culture method in the initialization culture apparatus 50.
- the expansion culture apparatus 70 a plurality of cell masses are put in the dialysis tube 75 of the suspension culture device shown in FIG. The details of the suspension incubator are as described above.
- the gel medium around the dialysis tube 75 in the container 76 is exchanged or replenished using a supplement medium feeding pump 77.
- FIG. 6 the gel medium around the dialysis tube 75 in the container 76 is exchanged or replenished using a supplement medium feeding pump 77.
- a replenishment medium feeding pump 77 and a dialysis tube 75 in a container 76 of a floating incubator are connected by a liquid feeding tube 78, and the medium in the dialysis tube 75 is connected to the medium. Ingredients necessary for culture may be supplemented.
- the stem cell manufacturing system shown in FIG. 1 may further include an expansion culture imaging apparatus that images culture in the expansion culture apparatus 70.
- an expansion culture imaging apparatus that images culture in the expansion culture apparatus 70.
- a colorless culture medium is used as the culture medium used in the expansion culture apparatus 70, it is possible to suppress irregular reflection and autofluorescence that may occur when a colored culture medium is used.
- a pH indicator such as phenol red may be included.
- the stem cell manufacturing system captures the cells in the expansion culture device 70 to obtain the ratio of induced cells.
- a guidance state monitoring device for calculating.
- the induced state monitoring device may specify the ratio of induced cells by antibody immunostaining or RNA extraction.
- the stem cell production system may include an uninduced cell removal device that removes uninduced cells by a magnetic cell separation method, flow cytometry, or the like.
- the enlargement culture imaging apparatus is the same as the initialization culture imaging apparatus 171 shown in FIG. 8, and the culture in the expansion culture apparatus 70 may be taken via the telecentric lens 172.
- the illumination method used when the enlarged culture imaging apparatus performs imaging is the same as the illumination method used when the initialization culture imaging apparatus 171 performs imaging, as described above.
- the enlarged culture photographing apparatus is also connected to a CPU 500 including an image processing unit 501 shown in FIG.
- the image processing unit 501 including the contour definition unit 511, the cell evaluation unit 512, the statistical processing unit 513, the density calculation unit 514, and the culture medium evaluation unit 515 is similar to the image captured by the initialization culture imaging apparatus 171 and is expanded culture imaging. Image processing is performed on an image captured by the apparatus. The details of the image processing unit 501 are as described above.
- the cell evaluation unit 512 may issue a warning when the size of each cell mass is outside the appropriate range.
- the cell evaluation part 512 may output that it is a subculture timing, when the magnitude
- the supply rate of the medium in the expansion culture device 70 may be changed according to the calculated cell mass size. For example, the medium supply rate may be increased as the size of the cell mass increases.
- the supply rate of the medium in the expansion culture device 70 may be changed according to the number of cell clusters calculated by the statistical processing unit 513. For example, the supply rate of the medium may be increased as the number of cell clusters increases.
- the density calculation unit 514 may output that it is a subculture timing when the density of the cell mass becomes a predetermined threshold value or more.
- the density of the cell mass can be adjusted within the preferred range, for example, by passage.
- the supply rate of the medium in the expansion culture device 70 may be changed according to the calculated density of the cell mass. For example, the supply rate of the medium may be increased as the density of the cell mass increases.
- the dialysis tube of the floating culture device is also used in the expansion culture apparatus 70 by, for example, the supplemental culture medium pump 77 shown in FIG. 75 ambient media are changed.
- the replacement speed of the medium around the dialysis tube 75 of the floating culture device by the supplemented medium feeding pump 77 is increased, and the flow rate of the medium to be replaced is increased.
- the cell mass divided by the first division mechanism 60 shown in FIG. 1 is again cultured in the expansion culture apparatus 70.
- the division of the cell mass in the first division mechanism 60 and the culture of the cell mass in the expansion culture device 70 are repeated until the necessary amount of cells is obtained.
- the pump that sends the solution containing the cell mass in the expansion culture apparatus 70 to the first dividing mechanism 60 via the expansion culture liquid supply path 71 is, for example, the cell mass calculated by the cell evaluation unit 512 shown in FIG. It may be driven when the magnitude value of becomes equal to or greater than a predetermined threshold.
- the pump that sends the solution containing the cell mass to the first cell mass feeding channel 51 shown in FIG. 1 has, for example, the density value of the cell mass calculated by the density calculation unit 514 shown in FIG. When it becomes above, it may be driven.
- a second cell mass feeding path 72 is connected to the expansion culture device 70.
- the expansion culture device 70 sends out the cell mass-containing liquid that has been expanded and separated from the container to the second cell mass feeding path 72 using a pump or the like. However, exfoliation is not necessary for suspension culture.
- the second cell mass feeding path 72 has an inner diameter through which only induced cells having a size less than a predetermined size are passed, and is connected to a branch flow path for removing uninduced cells having a size greater than or equal to a predetermined size. Also good.
- the inner wall of the second cell mass feeding path 72 may be coated with poly-HEMA so that cells do not adhere to make it non-adhesive.
- a material in which cells are difficult to adhere may be used as the material of the second cell mass feeding path 72.
- the conditions in the second cell mass feeding channel 72 can be controlled in the housing 200. Equal to the measured temperature and CO 2 concentration.
- a backflow prevention valve may be provided in the second cell mass feeding path 72 from the viewpoint of preventing contamination.
- the second cell mass feeding path 72 is connected to the second dividing mechanism 80.
- the second dividing mechanism 80 includes, for example, a mesh. When the cell mass contained in the solution passes through the mesh by water pressure, it is divided into a plurality of cell masses having the size of each hole of the mesh. For example, if the size of each hole of the mesh is uniform, the size of the plurality of cell clusters after the division is also substantially uniform.
- the second dividing mechanism 80 may include a nozzle. For example, by finely processing the inside of a substantially conical nozzle in a stepped manner, the cell mass contained in the solution is divided into a plurality of cell masses when passing through the nozzle.
- the second dividing mechanism 80 is similar to the first dividing mechanism 60, and is a cell clump divider including the end block 61, the connecting block 62, and the tip block 63 shown in FIGS. 24 to 27, or from FIG.
- the integrated cell divider shown in FIG. 31 may be provided. The details of the cell mass divider are as described above.
- a cell soul transport mechanism 90 for sequentially sending a plurality of cell souls to the package device 100 is connected to the second dividing mechanism 80 shown in FIG.
- a pre-package cell flow path 91 is connected between the cell soul transport mechanism 90 and the package apparatus 100.
- the cell soul transport mechanism 90 sequentially sends each of the cell masses divided by the second division mechanism 80 to the package apparatus 100 via the pre-package cell flow path 91 using a pump or the like.
- the pre-package cell channel 91 may be coated with poly-HEMA so that cells do not adhere. Or you may use the material which a cell does not adhere easily to the material of the cell flow path 91 before a package. In addition, by using a material having good temperature conductivity and CO 2 permeability as the material of the pre-package cell flow path 91, the conditions in the pre-package cell flow path 91 can be controlled by the controlled temperature and Equivalent to CO 2 concentration.
- the pre-package cell flow path 91 may be provided with a backflow prevention valve from the viewpoint of preventing contamination.
- the cryopreservation liquid feeding mechanism 110 is connected to the pre-package cell flow path 91.
- the cryopreservation solution feeding mechanism 110 sends the cell cryopreservation solution into the pre-package cell flow path 91.
- the cell mass is suspended in the cell cryopreservation solution in the pre-package cell flow path 91.
- the packaging apparatus 100 sequentially freezes each of the plurality of cell masses sent via the pre-package cell flow path 91. For example, each time the cell mass is received, the packaging apparatus 100 puts the cell mass in a cryopreservation container such as a cryotube and instantaneously freezes the cell mass solution at, for example, ⁇ 80 ° C. or lower.
- a cryopreservation container having a small surface area per volume tends to be frozen
- the shape of the cryopreservation container includes, but is not limited to, a capillary shape and a spherical shape. Further, depending on the required survival rate of the cells after thawing, it is not always necessary to freeze them instantly.
- a vitrification method for example, a vitrification method is used.
- DAP213 Cosmo Bio Inc.
- Freezing Medium Reprocell Corp.
- Freezing may be performed by a normal method other than the vitrification method.
- CryoDefend-Stem Cell R & D System
- STEM-CELLBANKER registered trademark, Nippon Zenyaku Kogyo Co., Ltd.
- Freezing may be performed with liquid nitrogen or with a Peltier element. When a Peltier element is used, it is possible to control temperature changes and suppress temperature unevenness.
- the package device 100 carries the cryopreservation container out of the housing 200. When frozen cells are for clinical use, the cryopreservation container is preferably a fully closed system. However, the packaging device 100 may package the stem cells in a storage container without freezing them.
- the cell mass solution may be replaced with a cryopreservation solution using a solution replacement device 101 as shown in FIG.
- a filter 102 is provided on the bottom surface, which is provided with pores through which cell masses do not permeate.
- the solution replacement device 101 has a cell mass introduction hole connected to the first liquid supply flow path 103 for feeding a medium containing cell mass on the internal filter 102, and the cell mass on the internal filter 102.
- a replacement solution introduction hole to which a second liquid supply flow path 104 for supplying a freezing liquid not included is connected, and a first discharge flow path 105 for discharging the frozen liquid containing cell clumps from above the internal filter 102 are connected.
- a cell mass outflow hole is provided.
- the solution displacement device 101 is provided with a waste liquid outflow hole to which a second discharge channel 106 for discharging the solution that has passed through the filter 102 is connected.
- a tube or the like can be used for each of the first liquid supply flow path 103, the second liquid supply flow path 104, the first discharge flow path 105, and the second discharge flow path 106.
- FIGS. 33 (a) and 33 (b) in the state in which the flow of the solution in the second discharge channel 106 is stopped, the inside of the solution replacer 101 is transferred from the first liquid supply channel 103. Into this, a medium containing a cell mass is added.
- FIG. 33 (c) the flow of the solution in the second discharge channel 106 is allowed, and the medium is discharged from the solution replacer 101. At this time, the cell mass remains on the filter 102 as shown in FIG.
- FIGS. 33 (e) and 33 (f) in the state where the flow of the solution in the second discharge channel 106 is stopped, the solution replacement device 101 is moved from the second liquid supply channel 104 to the inside.
- cryopreservation solution is added, and the cell mass is dispersed in the cryopreservation solution. Thereafter, as shown in FIG. 33 (g), the cryopreservation liquid containing the cell mass is discharged from the first discharge channel 105.
- the cryopreservation solution containing the cell mass is sent to the cryopreservation container or the like via the first discharge channel 105.
- the solution replacement device 101 shown in FIG. 33 can be used not only for replacement of a medium with a cryopreservation solution but also for replacement of an old medium with a new medium.
- the second liquid supply channel 104 supplies a new medium.
- the solution replacement device 101 can also be used to replace the medium with a solution containing a cell mass dividing enzyme when dividing the cell mass.
- cell clustering enzymes include trypsin and trypsin alternative recombinant enzymes such as TrypLE Select (registered trademark, Life Technologies).
- the second liquid feeding channel 104 feeds a solution containing the cell mass dividing enzyme.
- the stem cell manufacturing system shown in FIG. 1 may further include a package process imaging apparatus that images the package process in the package apparatus 100.
- the stem cell production system may further include a sterilization device for sterilizing the inside of the housing 200.
- the sterilizer may be a dry heat sterilizer.
- the wiring of devices using electricity such as the separation device 10, the pre-introduction cell liquid supply path 20, the induction factor liquid supply mechanism 21, the factor introduction apparatus 30, the cell mass production apparatus 40, and the package apparatus 100 is heat resistant It is preferable that the wiring has.
- the sterilization apparatus may sterilize the inside of the housing 200 by releasing a sterilizing gas such as ozone gas, hydrogen peroxide gas, or formalin gas into the housing 200.
- the stem cell production system was recorded by the separation apparatus 10, the pre-introduction cell liquid supply path 20, the induction factor liquid supply mechanism 21, the factor introduction apparatus 30, the cell mass production apparatus 40, the package apparatus 100, etc., and the imaging apparatus.
- the image may be transmitted to an external server by wire or wireless.
- an external server for example, conditions such as induction factor introduction conditions, culture conditions, and freezing conditions, incomplete initialization of stem cells, failure of differentiation and proliferation of stem cells, and chromosomal abnormalities, etc. You may analyze the relationship with a result, extract the conditions which lead a result, or predict a result.
- the external server controls the separation device 10 of the stem cell production system, the induction factor liquid feeding mechanism 21, the factor introduction device 30, the cell mass production device 40, the packaging device 100, and the like based on the standard operation procedure (SOP). Depending on the SOP, whether or not each device is operating may be monitored, and an operation record of each device may be automatically generated.
- SOP standard operation procedure
- stem cell production system induction, establishment, expansion culture, and cryopreservation of stem cells such as iPS cells can be performed all at once in a fully automatic manner.
- the stem cell manufacturing system according to the embodiment is not limited to the configuration shown in FIG.
- blood is fed from the blood storage unit 201 to the mononuclear cell separation unit 203 via the blood feeding channel 202.
- a tube can be used as the blood storage unit 201 and the mononuclear cell separation unit 203.
- the blood liquid supply path 202 is, for example, a resin tube or a silicon tube. The same applies to other liquid feeding paths described later.
- Blood information may be managed by attaching an identifier such as a barcode to the blood storage unit 201.
- a pump 204 is used for liquid feeding. As the pump 204, a positive displacement pump can be used.
- Examples of positive displacement pumps include reciprocating pumps including piston pumps, plunger pumps, and diaphragm pumps, or rotary pumps including gear pumps, vane pumps, and screw pumps.
- Examples of the diaphragm pump include a tubing pump and a piezoelectric (piezo) pump.
- Examples of the tubing pump include a peristaltic pump (registered trademark, Ato Corporation), and RP-Q1 and RP-TX (Takasago Electric Co., Ltd.).
- Examples of piezoelectric pumps include SDMP304, SDP306, SDM320, and APP-20KG (Takasago Electric Co., Ltd.).
- liquid can be fed without directly contacting the blood inside the blood feeding path 202.
- a hermetic pump such as a peristaltic pump (registered trademark), a tubing pump, or a diaphragm pump
- liquid can be fed without directly contacting the blood inside the blood feeding path 202.
- a syringe pump may be used as the pump 204 and the pump 207, the pump 216, the pump 222, the pump 225, the pump 234, the pump 242, and the pump 252 described later.
- Even pumps other than the hermetic pump can be reused by heat sterilization treatment or the like.
- the red blood cell coagulant is sent to the mononuclear cell separation unit 203 from the separation agent storage unit 205 via the liquid feeding path 206 and the pump 207.
- the separating agent storage unit 205 for example, a tube can be used.
- the separating agent storage unit 205 may be managed by attaching an identifier such as a barcode to manage the separating agent information.
- the erythrocyte coagulant for example, HetaSep (registered trademark, STEMCELL Technologies) or erythrocyte coagulant (Nipro) can be used.
- erythrocytes are precipitated by the erythrocyte coagulant, and mononuclear cells are separated.
- the supernatant containing the mononuclear cells in the mononuclear cell separation unit 203 is sent to the mononuclear cell purification filter 210 via the mononuclear cell feeding path 208 and the pump 209.
- the mononuclear cell purification filter 210 components other than mononuclear cells are removed, and a solution containing mononuclear cells is obtained.
- Purecell registered trademark, PALL
- CellSorba E As the mononuclear cell purification filter 210, Purecell (registered trademark, PALL), CellSorba E (Asahi Kasei Corporation), Sepacel PL (Asahi Kasei Corporation), Adacolumn (registered trademark, JIMRO), and separation bag (Nipro Corporation) Etc.
- the mononuclear cell separation unit 203 the separation agent storage unit 205, the mononuclear cell purification filter 210, the pumps 204, 207, 209, and the like constitute a separation device.
- the solution containing mononuclear cells is sent to the factor introduction part 213 via the pre-introduction cell liquid supply path 211 and the pump 212.
- a tube can be used as the factor introduction unit 213.
- a pluripotency inducing factor is sent to the factor introduction unit 213 from the factor storage unit 214 including the pluripotency inducing factor via the factor feeding path 215 and the pump 216.
- a tube can be used as the factor storage unit 214.
- the factor storage unit 214 may be managed with information on pluripotency inducers by attaching an identifier such as a barcode.
- the factor storage unit 214, the pump 216, and the like constitute an induction factor liquid feeding mechanism.
- a pluripotency inducer is introduced into a cell by, for example, RNA lipofection, and an inducer introduced cell is produced.
- the transfection method of the inducer is not limited to the RNA lipofection method.
- a Sendai virus vector containing a pluripotency inducer may be used.
- the pluripotency inducer may be a protein.
- the inducer-introduced cells are sent to an initialization culture device 219 as a part of the cell mass production apparatus via the introduced cell liquid supply path 217 and the pump 218.
- the introduced cell liquid supply path 217 is, for example, temperature permeable and CO 2 permeable.
- a suspension incubator shown in FIG. 5 may be used as the initialization incubator 219.
- the inducer-introduced cells are placed in a dialysis tube.
- the medium feeding path 221 and the pump 222 are transferred.
- the blood cell culture medium is supplied via The medium feeding path 221 is, for example, temperature permeable and CO 2 permeable.
- the blood cell culture medium storage unit 220 may be managed with information on the blood cell culture medium by attaching an identifier such as a barcode.
- the blood cell culture medium storage unit 220, the culture medium supply path 221 and the pump 222 constitute a culture medium supply device.
- the pump 222 may continuously supply the blood cell culture medium according to the instruction of the CPU 500 shown in FIG. 11, or may supply the blood cell culture medium at a predetermined timing.
- the initialization cell incubator 219 shown in FIG. 34 is supplied with the stem cell medium from the stem cell medium storage unit 223 including the stem cell medium via the medium feeding path 224 and the pump 225.
- the stem cell culture medium storage unit 223 may be managed with information on the stem cell culture medium by attaching an identifier such as a barcode.
- the medium feeding path 224 is, for example, temperature permeable and CO 2 permeable.
- the stem cell culture medium storage unit 223, the culture medium supply path 224, and the pump 225 constitute a culture medium supply device.
- the pump 225 may continuously supply the stem cell culture medium according to the instruction of the CPU 500 shown in FIG. 11, or may supply the stem cell culture medium at a predetermined timing.
- the blood cell medium storage unit 220 and the stem cell medium storage unit 223 may be stored refrigerated at a low temperature such as 4 ° C. in the refrigeration storage unit 259, for example.
- the culture medium sent from the blood cell culture medium storage unit 220 and the stem cell culture medium storage unit 223 may be sent to the incubator after being heated to 37 ° C. by a heater outside the refrigeration storage unit 259, for example. Or you may set the temperature around a liquid feeding path so that it may heat up to 37 degreeC while the culture medium preserve
- the old medium in the initialization incubator 219 is sent to the waste liquid storage unit 228 via the waste liquid feed path 226 and the pump 227.
- the waste liquid storage unit 228 may be managed by attaching an identifier such as a barcode to manage the information on the waste liquid.
- the cell mass cultured in the initialization culture device 219 is sent to the first expansion culture device 232 as a part of the cell mass production device via the introduction cell liquid supply channel 229, the pump 230, and the cell mass divider 231. Sent.
- the cell mass divider 231 may have, for example, the configuration shown in FIG. 30 or FIG. By passing through the cell mass divider 231, the cell mass is divided into smaller cell masses.
- the first expansion incubator 232 shown in FIG. 34 the floating incubator shown in FIG. 5 may be used. In this case, the cell mass is placed in a dialysis tube.
- the first expansion incubator 232 shown in FIG. 34 is supplied with the stem cell medium from the stem cell medium storage unit 223 including the stem cell medium via the medium feeding path 233 and the pump 234.
- the introduced cell feeding path 229 and the medium feeding path 233 are, for example, temperature permeable and CO 2 permeable.
- the stem cell culture medium storage unit 223, the culture medium supply path 233, and the pump 234 constitute a culture medium supply device.
- the pump 234 may continuously supply the stem cell culture medium according to the instruction of the CPU 500 shown in FIG. 11, or may supply the stem cell culture medium at a predetermined timing.
- the old medium in the first expansion incubator 232 shown in FIG. 34 is sent to the waste liquid storage unit 228 via the waste liquid feed path 235 and the pump 236.
- the cell mass cultured in the first expansion incubator 232 passes through the introduction cell feeding channel 237, the pump 238, and the cell mass divider 239, and then to the second expansion incubator 240 as a part of the cell mass production apparatus. Sent.
- the cell mass divider 239 may have, for example, the configuration shown in FIG. 30 or FIG. By passing through the cell clump divider 239, the cell clump is divided into smaller cell clumps.
- the second expansion incubator 240 shown in FIG. 34 the floating incubator shown in FIG. 5 may be used. In this case, the cell mass is placed in a dialysis tube.
- the stem cell culture medium 240 is supplied to the second expansion incubator 240 shown in FIG.
- the introduced cell feeding path 237 and the medium feeding path 241 are, for example, temperature permeable and CO 2 permeable.
- the stem cell culture medium storage unit 223, the culture medium supply path 241 and the pump 242 constitute a culture medium supply device.
- the pump 242 may continuously supply the stem cell culture medium according to the instruction of the CPU 500 shown in FIG. 11, or may supply the stem cell culture medium at a predetermined timing.
- the old medium in the second expansion incubator 240 shown in FIG. 34 is sent to the waste liquid storage unit 228 via the waste liquid supply path 243 and the pump 244.
- the cell mass cultured in the second expansion incubator 240 is sent to the solution replacement device 247 via the introduced cell liquid supply path 245 and the pump 246.
- the solution replacer 247 may have a configuration shown in FIG. 33, for example.
- the cell mass is held by a filter, and the culture medium is sent to the waste liquid storage unit 228 via the waste liquid supply path 248 and the pump 249.
- the solution replacement unit 247 After stopping the flow of the solution in the waste liquid feeding path 248 by stopping the driving of the pump 249 or closing the waste liquid feeding path 248 with a valve or the like, the solution replacement unit 247 includes a cryopreservation liquid containing a cryopreservation liquid.
- the cryopreservation solution is put from the storage unit 250 through the liquid supply path 251 and the pump 252. As a result, the cell mass is dispersed in the cryopreservation solution.
- the cryopreservation liquid in which the cell mass is dispersed is sent into the cryopreservation container 255 via the liquid supply path 253 and the pump 254 as a part of the package device.
- the cryopreservation container 255 is placed in a low temperature storage 256.
- a low temperature storage 256 For example, -80 ° C. liquid nitrogen is sent from the liquid nitrogen storage 257 to the low temperature storage 256 through the liquid supply path 258.
- the cell mass in the cryopreservation container 255 is frozen.
- the freezing of the cell mass may not depend on liquid nitrogen.
- the low temperature storage 256 may be a freezer such as a compression freezer, an absorption freezer, or a Peltier freezer.
- the container 247 and the like are stored in, for example, a cassette-shaped case 259 made of resin or the like.
- the case 259 is made of a heat-resistant material that can be sterilized, for example.
- the inside of the case 259 is set to an environment suitable for cell culture, for example, at 37 ° C. and a CO 2 concentration of 5%.
- the liquid supply path through which the medium flows is made of, for example, a CO 2 permeable material.
- the case 259 is not limited to a cassette shape.
- a flexible bag may be used.
- the above-described liquid supply path, mononuclear cell separation unit 203, mononuclear cell purification filter 210, factor introduction unit 213, initialization incubator 219, first expansion incubator 232, second expansion incubator 240, and The solution replacer 247 and the like may be divided and stored in a plurality of cases.
- the case 259 is disposed in the housing 200. Pump, blood storage unit 201, separation agent storage unit 205, factor storage unit 214, blood cell culture medium storage unit 220, stem cell culture medium storage unit 223, waste liquid storage unit 228, cryopreservation container 255, low temperature storage unit 256, and liquid nitrogen storage
- the cabinet 257 is disposed inside the housing 200 and outside the case 259.
- the case 259 and the housing 200 include, for example, fitting portions that fit each other. Therefore, the case 259 is disposed at a predetermined position in the housing 200.
- a pump In the housing 200, a pump, a blood storage unit 201, a separating agent storage unit 205, a factor storage unit 214, a blood cell culture medium storage unit 220, a stem cell culture medium storage unit 223, a waste liquid storage unit 228, a cryopreservation container 255, a low temperature
- the storage 256 and the liquid nitrogen storage 257 are disposed at predetermined positions.
- the liquid supply path in the case 259 includes a pump, a blood storage unit 201, a separation agent storage unit 205, a factor storage unit 214, and a blood cell culture medium storage unit 220.
- the stem cell culture medium storage unit 223, the waste liquid storage unit 228, the cryopreservation container 255, the low temperature storage unit 256, and the liquid nitrogen storage unit 257 are in contact with each other.
- the case 259 and its inclusions are disposable, and after the cell mass has been frozen, it may be discarded and replaced with a new one.
- an identifier such as a barcode may be attached to the case 259 to manage the number of uses.
- stem cell production system it is possible to automatically produce a frozen preservation product of stem cells such as iPS cells from blood automatically without human intervention.
- the factor introduction apparatus 30 may induce cells by transfection using a viral vector such as a retrovirus, a lentivirus, or a Sendai virus, a plasmid, or a protein transfection rather than electroporation or RNA lipofection. Good.
- a viral vector such as a retrovirus, a lentivirus, or a Sendai virus, a plasmid, or a protein transfection rather than electroporation or RNA lipofection. Good.
- the pre-introduction cell liquid supply path 20, the introduced cell liquid supply path 31, the cell mass liquid supply path 51, the expanded culture liquid supply path 71, the cell mass liquid supply path 72, and the pre-package cell flow path 91 are microfluidic technologies. May be provided on the substrate.
- the present invention includes various embodiments and the like not described herein.
- Example 1 Human blood cells were obtained from healthy adult men. Modified mRNA (TriLink), non-adhesive dish, 15 mL tube, 50 mL tube, Ficoll, cytoflow meter (BD), antibody against CD34 (Miltenyi Biotec), antibody against CD3 (Miltenyi Biotec), MACS (registered trademark) Buffer (Miltenyi Biotec), T cell medium, low serum medium (Opti-MEM (registered trademark), Gibco), siRNA transfer reagent (Lipofectamine (registered trademark) RNAiMAX, ThermoFisherScience), and antibody to TRA-1-60 (BD) Prepared.
- TriLink Modified mRNA
- Non-adhesive dish 15 mL tube, 50 mL tube, Ficoll, cytoflow meter (BD), antibody against CD34 (Miltenyi Biotec), antibody against CD3 (Miltenyi Biotec), MACS (registered trademark) Buffer (Miltenyi Biotec
- the T cell (CD3 positive cell) medium was a mixture of A medium and B medium below.
- the medium A was a mixed solution of 15 mL of X vivo-10 (Lonza, 04-743Q) and IL-2 (10 ⁇ g / mL).
- B medium was mixed with 50 ⁇ L of X vivo-10 and Dynabeads CD3 / CD28 (Life Technologies, 111-31D) in a 1.5 mL tube, vortexed for 5 seconds, spun down, and placed in DynaMag-2 (Thermo Fisher Science). Then, after standing for 1 minute, the supernatant was removed.
- IL-6 100 ⁇ g / mL
- 10 ⁇ L of SCF 300 ⁇ g / mL
- 10 ⁇ L of TPO 300 ⁇ g / mL
- 10 ⁇ L of Flt3 ligand 300 ⁇ g
- an OCT3 / 4 mRNA-containing solution, a SOX2 mRNA-containing solution, a KLF4 mRNA-containing solution, a c-MYC mRNA-containing solution, a LIN28A mRNA-containing solution, and a green fluorescent protein (GFP) each having a concentration of 100 ng / ⁇ L.
- An mRNA-containing solution was prepared.
- the centrifuge was set at 18 ° C. 5 to 50 mL of blood was collected, and EDTA was added to the blood and mixed gently. Further, 5 mL of a medium for separating human lymphocytes (Ficoll-Paque PREMIUM, GE Healthcare Japan) was dispensed into two 15 mL tubes. 5 mL of PBS was added to the blood for dilution, and 5 mL was overlaid on the medium for separating human lymphocytes in the tube. At this time, diluted blood was slowly added onto the medium along the tube wall of the tube so as not to disturb the interface.
- a medium for separating human lymphocytes (Ficoll-Paque PREMIUM, GE Healthcare Japan) was dispensed into two 15 mL tubes. 5 mL of PBS was added to the blood for dilution, and 5 mL was overlaid on the medium for separating human lymphocytes in the tube. At this time, diluted blood was slowly added onto the medium along the tube wall of the
- the solution in the tube was centrifuged at 400 ⁇ g and 18 ° C. for 30 minutes. At this time, both acceleration and deceleration went slowly. After centrifuging, a white turbid intermediate layer appeared in the tube. This white, cloudy intermediate layer contains mononuclear spheres. The white, turbid intermediate layer in the tube was slowly collected with a pipetman and transferred to a new 15 mL tube. At this time, the lower layer was not sucked up. About 1 mL of the intermediate layer, which was cloudy in white, could be recovered from one tube. Two intermediate layers were transferred together into one tube.
- the separated 5 ⁇ 10 6 mononuclear cells were suspended in 1 mL of T cell medium or blood stem / progenitor cell medium, seeded in a 12-well plate, and cultured.
- the culture conditions were a CO 2 concentration of 5%, an oxygen concentration of 19%, and a temperature of 37 ° C.
- the obtained lipofection reaction solution was gently added to a 12-well plate in which mononuclear cells were cultured, and then the mononuclear cells were cultured at 37 ° C. for 18 hours in a feeder-free manner.
- the culture conditions were a CO 2 concentration of 5%, an oxygen concentration of 19%, and a temperature of 37 ° C.
- the density of mononuclear cells when the lipofection reaction solution was added was 3 ⁇ 10 6 . After 18 hours, the mononuclear cells were collected in a 15 mL tube, centrifuged at 300 g, and the supernatant was removed.
- CD34 blood cell medium 1.25 mL of CD34 blood cell medium was added to the 15 mL tube, the mononuclear cell suspension was returned to the same 12-well plate, and the mononuclear cells were cultured at 37 degrees overnight in a feeder-free manner.
- the culture conditions were a CO 2 concentration of 5% and an oxygen concentration of 19%. The above process was repeated once every two days for 7 days.
- TRA-1-60 (Confirmation of expression of TRA-1-60) Seven days after the start of lipofection, part of the cells are removed from the 12-well plate, and the removed cells are directed against TRA-1-60, a surface antigen that is specifically expressed on iPS cells that have begun to be initialized. The antibody was stained with an antibody labeled with Allophycocynin (APC) fluorescent dye. Subsequently, reprogramming is initiated in the cells by confirming the proportion of TRA-1-60 positive cells with a fluorescence activated cell sorter (FACS®, BD), iPS cell genes are expressed, and iPS cells are I confirmed that it could be done.
- FACS® fluorescence activated cell sorter
- a dot plot was prepared with the autofluorescence intensity on the x-axis and the fluorescence intensity of the fluorescence-labeled anti-TRA-1-60 antibody on the y-axis.
- TRA-1-60 positive cells were not detected.
- TRA-1-60 positive cells were detected.
- the result was derived from the whole mononuclear cells that were not separated by the marker
- Experiment 2 was the result derived from cells separated by CD3 positive
- Experiment 3 was separated by CD34 positive. It is the result induced
- Example 2 500 mL of Primate ES Cell Medium (ReproCELL) and 0.2 mL of bFGF (Gibco PHG0266) having a concentration of 10 ⁇ g / mL were mixed to prepare a bFGF-containing human iPS medium.
- deacylated gellan gum (Nissan Chemical) was added to the bFGF-containing human iPS medium to a concentration of 0.02% by weight to prepare a bFGF-containing human iPS gel medium. Furthermore, 5 mL of trypsin with a concentration of 2.5% by weight, 5 mL of collagenase IV with a concentration of 1 mg / mL, 0.5 mL with 0.1 mol / L of CaCl2, 10 mL of KnockOut serum replacement (registered trademark, Invitrogen 10828) -028) and 30 mL of purified water were mixed to prepare a stripping solution generally called CTK solution.
- CTK solution a stripping solution generally called CTK solution.
- CTK solution 300 ⁇ L was added to a 6-well dish (Thermochemical 12-556-004) in which iPS cells were cultured on feeder cells, and incubated for 3 minutes in a CO 2 incubator. After 3 minutes, the dish was taken out from the incubator, it was confirmed that only feeder cells were peeled off, and the CTK solution was removed using an aspirator.
- a stripping solution (Accutase, registered trademark) was added to a 6-well dish, placed in a CO 2 incubator and incubated for 5 minutes. Then, 0.7 mL of bFGF-containing iPS medium was added to the 6-well dish, and iPS cells were suspended until they became a single cell.
- bFGF-containing human iPS medium After suspending iPS cells, 4 mL of bFGF-containing human iPS medium was added to a 15 mL centrifuge tube, and the iPS cell suspension was centrifuged at 270 g using a centrifuge. After centrifugation, the supernatant was removed, 1 mL of bFGF-containing human iPS medium was added to a 15 mL centrifuge tube, and the number of cells was calculated using a hemocytometer. After cell calculation, 5 ⁇ 10 5 iPS cells were seeded in a 15 mL falcon tube (registered trademark, Corning 3202096) or a non-adhesive dish, and then suspended in suspension without stirring.
- 15 mL falcon tube registered trademark, Corning 3202096
- FIG. 37 (b) when iPS cells were cultured using a bFGF-containing human iPS medium that was not gelled in a non-adhesive dish, aggregation of colonies of iPS cells was remarkably observed.
- FIG. 37 (a) when iPS cells were cultured using a bFGF-containing human iPS gel medium in a 15 mL tube, no noticeable aggregation was observed.
- FIG. 38 (a) is a photograph of the first day when iPS cells were cultured in a 15 mL tube using bFGF-containing human iPS gel medium, and FIG.
- FIGS. 38 (a) and 38 (b) are a bFGF-containing human iPS in the 15 mL tube. It is the photograph of the 9th day when iPS cell is cultured using a gel culture medium. From the photographs in FIGS. 38 (a) and 38 (b), it was confirmed that iPS cells of different strains did not aggregate and formed colonies.
- FIG. 39 (a) is a photograph immediately before re-seeding a colony of iPS cells suspended in a gel medium for 7 days on feeder cells.
- FIG. 39 (b) is a photograph when the form of the colony was confirmed three days later. As a result, as shown in FIG. 40, it was confirmed that 95% or more of the colonies were undifferentiated. Therefore, it was shown that iPS cells can be cultured in a gel medium while maintaining an undifferentiated state.
- Example 3 The same bFGF-containing human iPS medium and bFGF-containing human iPS gel medium as in Example 2 were prepared. 300 ⁇ L of CTK solution was added to a 6-well dish in which iPS cells were cultured on feeder cells, and incubated in a CO 2 incubator for 3 minutes. After 3 minutes, the dish was taken out from the incubator, it was confirmed that only feeder cells were peeled off, and the CTK solution was removed using an aspirator. After removing the CTK solution, 500 ⁇ L of PBS was added to the dish. After washing the iPS cells, PBS was removed from the dish, 0.3 mL of Accumax was added to the dish, and the dish was placed in a CO 2 incubator and incubated for 5 minutes. . Then, 0.7 mL of bFGF-containing iPS medium was added to the dish, and iPS cells were suspended until they became a single cell.
- bFGF-containing human iPS medium After suspending iPS cells, 4 mL of bFGF-containing human iPS medium was added to a 15 mL centrifuge tube, and the iPS cell suspension was centrifuged at 270 g using a centrifuge. After centrifugation, the supernatant was removed, 1 mL of bFGF-containing human iPS medium was added to a 15 mL centrifuge tube, and the number of cells was calculated using a hemocytometer. After the cell calculation, 5 ⁇ 10 5 iPS cells were seeded in a 15 mL tube, and then suspended and cultured without stirring.
- bFGF-containing human iPS gel medium In a 15 mL tube, 2 mL of bFGF-containing human iPS gel medium was used. A ROCK inhibitor was added to each medium so that it might become 10 micromol / L. Thereafter, 500 ⁇ L of bFGF-containing human iPS gel medium was added to a 15 mL tube every day. Note that 500 ⁇ L of the gel medium contained 0.5 ⁇ L of ROCK inhibitor. As a control, iPS cells were cultured in suspension for 7 days under the same conditions except that no ROCK inhibitor was added.
- FIG. 41 (a) when no ROCK inhibitor was added to the bFGF-containing human iPS medium, iPS cells did not form colonies.
- FIG. 41 (b) when a ROCK inhibitor was added to the bFGF-containing human iPS medium, iPS cells formed colonies. From this result, it was shown that a ROCK inhibitor is effective when iPS cells are cultured in suspension from a single cell.
- Example 4 As a container for storing the dialysis tubing using a Falcon conical tubes 50 mL (registered trademark) is a container not CO 2 permeability, G-Rex (registered trademark, Wilson Wolf) is a container of CO 2 permeability, Cells were cultured in suspension under the same conditions except for the container. As a result, as shown in FIG. 42, the cell viability was higher when cultured using a CO 2 permeable container.
- Example 5 Gel medium containing iPS cells was placed in each of two dialysis modules (Spectrum G235035) equipped with a dialysis tube with a molecular weight cut off of 100 kDa. Furthermore, each dialysis module was put into a 50 mL centrifuge tube, and a gel medium was put around the dialysis tube in the centrifuge tube. In addition, the gel medium containing iPS cells was directly put into another 50 mL centrifuge tube.
- a pump was connected to one of the two centrifuge tubes with a dialysis tube inside, as shown in FIG. 6, and the gel medium in the centrifuge tube was continuously replaced.
- the gel medium was stored at 4 ° C and set to 37 ° C when reaching the centrifuge tube.
- a pump was not connected to the other of the two centrifuge tubes in which a dialysis tube was placed, and the gel medium in the centrifuge tube was not changed. In addition, the gel medium in the centrifuge tube in which no dialysis tube was placed was not changed.
- the cells cultured in each container were observed. As shown in FIGS. 43 and 44, the cell mass was cultured in a dialysis tube, and the gel medium around the dialysis tube was pumped. When continuously exchanged, a large number of cell clusters were formed. In addition, very few cells were differentiated. However, when the cell mass was cultured in a dialysis tube and the gel medium around the dialysis tube was not continuously replaced with a pump, the cell mass decreased and the number of differentiated cells increased. In addition, when the cell mass was cultured without using a dialysis tube and the gel medium was not continuously exchanged with a pump, the cell mass was hardly formed.
Abstract
Description
臨床用iPS細胞は非常に綺麗に保たれたクリーンルームで作製、保存される必要がある。しかし、要求されるレベルの清潔度を維持するコストは非常に高額である。そのため、iPS細胞を作るのにコストがかかり、産業化への大きな障害となっている。
幹細胞の樹立から保存までの一連の作業が複雑であり、手作業によるところが多い。また、幹細胞の作製は、個人の技量に負っているところがある。その為、作製者や実験バッチによって、iPS細胞の品質のばらつきが生じうる。
クリーンルームの中で特定のドナー以外の他人のiPS細胞とのクロスコンタミネーションを防ぐために、一人の人間のみに由来するiPS細胞が所定の時間をかけてクリーンルーム内で作製される。またiPS細胞の樹立、品質評価には長時間を要する。しかし、iPS細胞は、クリーンルームで一度に一人の人間のためだけに作製されるので、多くの希望者のiPS細胞を作製するのに非常に長い時間を要する。
上述したように、現状、iPS細胞の作製は手作業によるところが大きい。しかし、臨床用iPS細胞を作製することができるのに必要な技術を有する技術者は少ない。
D=2(s/π)1/2 (1)
ここで、Dは直径、Sは面積を表す。
上記のように、本発明を実施の形態によって記載したが、この開示の一部をなす記述及び図面はこの発明を限定するものであると理解するべきではない。この開示から当業者には様々な代替実施の形態、実施の形態及び運用技術が明らかになるはずである。例えば、因子導入装置30は、エレクトロポレーションやRNAリポフェクションではなく、レトロウイルス、レンチウイルス、及びセンダイウイルス等のウイルスベクターや、プラスミドを用いるトランスフェクション、あるいはタンパク質トランスフェクションにより、細胞を誘導してもよい。また、導入前細胞送液路20、導入細胞送液路31、細胞塊送液路51、拡大培養送液路71、細胞塊送液路72、及びパッケージ前細胞流路91はマイクロフルイディクス技術により基板上に設けられていてもよい。この様に、本発明はここでは記載していない様々な実施の形態等を包含するということを理解すべきである。
(準備)
ヒト血液細胞は健康な成人男性から入手した。また、修飾化mRNA(TriLink社)、非接着ディッシュ、15mLチューブ、50mLチューブ、フィコール、サイトフローメータ(BD)、CD34に対する抗体(Miltenyi Biotec)、CD3に対する抗体(Miltenyi Biotec)、MACS(登録商標)バッファ(Miltenyi Biotec)、T細胞培地、低血清培地(Opti-MEM(登録商標)、Gibco)、siRNA導入試薬(Lipofectamine(登録商標)RNAiMAX、ThermoFisherScience)、及びTRA-1-60に対する抗体(BD)を用意した。
遠心機を18℃に設定した。5mLから50mLの血液を採血し、血液にEDTAを加えて優しく混ぜた。また、ヒトリンパ球分離用の媒体(Ficoll-Paque PREMIUM、GEヘルスケア・ジャパン)を5mLずつ2本の15mLチューブに分注した。5mLのPBSを血液に加えて希釈し、チューブ中のヒトリンパ球分離用の媒体の上に5mLずつ重層した。この時、界面を乱さないように、希釈血液をチューブの管壁を伝わらせてゆっくりと媒体上に加えた。
1×107個の単核球と、CD34抗体又はCD3抗体と、を、4℃の溶液100μL中で15分反応させた。反応後、溶液に5mLのMACS(登録商標)バッファ(Miltenyi Biotec)を加え、270gで遠心した。遠心後、上清を除去し、1mLのMACSバッファを添加した。その後、自動磁気細胞分離装置(autoMACS、Miltenyi Biotec)の分離プログラムを利用して、単核球のうち、CD34陽性細胞又はCD3陽性細胞を分離した。
分離した5×106個の単核球を1mLのT細胞培地、又は血液幹・前駆細胞培地に懸濁し、12ウェルプレートに播種し、培養した。培養条件は、CO2濃度が5%、酸素濃度が19%、及び温度が37℃であった。
100μLの低血清培地(Opti-MEM(登録商標)、Gibco)と25μLの初期化因子混合液を混合し、第1の混合液とした。また、112.5μLの低血清培地(Opti-MEM(登録商標)、Gibco)と12.5μLのsiRNA導入試薬(Lipofectamine(登録商標)RNAiMAX、ThermoFisherScience)を混合し、第2の混合液とした。その後、第1の混合液と、第2の混合液と、を混合し、15分室温で静置してリポフェクション反応液とした。
リポフェクションを開始してから7日目に、リポフェクションを合計4回した細胞の密度は、3×106であった。細胞の一部を12ウェルプレートから取り出し、蛍光顕微鏡でGFPの発現を確認したところ、図35に示すように、GFPの発現が確認された。これにより、単核球にmRNAがトランスフェクションし、トランスフェクトされたmRNAからタンパク質が合成されていることが確認された。
リポフェクションを開始してから7日目に、細胞の一部を12ウェルプレートから取り出し、取り出した細胞を、初期化され始めたiPS細胞で特異的に発現する表面抗原であるTRA-1-60に対する抗体であって、Allophycocyanin(APC)蛍光色素で標識された抗体で染色した。その後、蛍光活性化セルソータ(FACS(登録商標)、BD)で、TRA-1-60陽性細胞の割合を確認することによって、細胞においてリプログラミングが開始され、iPS細胞遺伝子が発現し、iPS細胞ができてくる事を確認した。
500mLのPrimate ES Cell Medium(ReproCELL)、及び0.2mLの濃度が10μg/mLのbFGF(Gibco PHG0266)を混合し、bFGF含有ヒトiPS培地を調製した。
実施例2と同じbFGF含有ヒトiPS培地、及びbFGF含有ヒトiPSゲル培地を調製した。フィーダー細胞上でiPS細胞を培養している6ウェルディッシュにCTK溶液を300μL添加し、CO2インキュベーター中で3分間インキュベートした。3分後、インキュベーターからディッシュを取り出し、フィーダー細胞のみがはがれていることを確認し、アスピレータを用いてCTK溶液を取り除いた。CTK溶液を取り除いた後、ディッシュにPBSを500μL添加し、iPS細胞を洗浄後、ディッシュからPBSを取り除き、0.3mLのAccumaxをディッシュに添加し、ディッシュをCO2インキュベーターに入れ、5分間インキュベートした。その後、0.7mLのbFGF含有iPS培地をディッシュに添加し、iPS細胞をシングルセルになるまで懸濁した。
透析チューブを格納する容器として、CO2透過性ではない容器であるFalcon コニカルチューブ 50 mL(登録商標)と、CO2透過性の容器であるG-Rex(登録商標、Wilson Wolf)を用いて、容器以外は同条件で細胞を浮遊培養した。その結果、図42に示すように、CO2透過性の容器を用いて培養したほうが、細胞の生存率は高かった。
iPS細胞を含有するゲル培地を分画分子量が100kDaの透析チューブを備える2つの透析モジュール(Spectrum G235035)のそれぞれに入れた。さらに、透析モジュールを50mL遠心チューブにそれぞれ入れ、遠心チューブ内の透析チューブの周囲にゲル培地を入れた。また、iPS細胞を含有するゲル培地を別の50mL遠心チューブに直接入れた。
20 導入前細胞送液路
21 誘導因子送液機構
30 因子導入装置
31 導入細胞送液路
40 細胞塊作製装置
50 初期化培養装置
51 細胞塊送液路
60 分割機構
61 末端ブロック
61a 凹部
61b 凸部
61c 大孔径部
62 連結ブロック
62a 凹部
62b 凸部
62c 大孔径部
62d 小孔径部
62e 大孔径部
63 先端ブロック
63a 凹部
63b ノズル部
63c 大孔径部
63d 小孔径部
64 挿入ノズル
65a 大孔径部
65b 小孔径部
66a 挿入部
66b 挿入部
70 拡大培養装置
71 拡大培養送液路
72 細胞塊送液路
75 透析チューブ
76 容器
77 補給培地送液ポンプ
78 送液チューブ
79 廃液チューブ
80 分割機構
90 細胞魂搬送機構
91 パッケージ前細胞流路
100 パッケージ装置
101 溶液置換器
102 フィルター
103 送液流路
104 送液流路
105 排出流路
106 排出流路
110 凍結保存液送液機構
171 初期化培養撮影装置
172 テレセントリックレンズ
173 細胞観察用照明光源
174 培地観察用照明光源
200 筐体
201 血液保存部
202 血液送液路
203 単核球分離部
204 ポンプ
205 分離剤保存部
206 送液路
207 ポンプ
208 単核球送液路
209 ポンプ
210 単核球精製フィルター
212 ポンプ
213 因子導入部
214 因子保存部
215 因子送液路
216 ポンプ
217 導入細胞送液路
218 ポンプ
219 初期化培養器
220 血液細胞培地保存部
221 培地送液路
222 ポンプ
223 幹細胞培地保存部
224 培地送液路
224 ポンプ
225 ポンプ
226 廃液送液路
227 ポンプ
228 廃液保管部
229 導入細胞送液路
230 ポンプ
231 細胞塊分割器
232 拡大培養器
233 培地送液路
234 ポンプ
235 廃液送液路
236 ポンプ
237 導入細胞送液路
238 ポンプ
239 細胞塊分割器
240 拡大培養器
241 培地送液路
242 ポンプ
243 廃液送液路
244 ポンプ
245 導入細胞送液路
246 ポンプ
247 溶液置換器
248 廃液送液路
249 ポンプ
250 凍結保存液保存部
251 送液路
252 ポンプ
253 送液路
254 ポンプ
255 凍結保存容器
256 低温保管庫
257 液体窒素保管庫
258 送液路
259 冷蔵保存部
259 ケース
271 センサー
272 温度計
301 バッグ
302 バッグ
401 入力装置
402 出力装置
403 関係記憶装置
500 CPU
501 画像処理部
511 輪郭定義部
512 細胞評価部
513 統計処理部
514 密度算出部
515 培地評価部
Claims (146)
- 細胞を含む溶液が通過する導入前細胞送液路と、
前記導入前細胞送液路に接続され、前記細胞に多能性誘導因子を導入して誘導因子導入細胞を作製する因子導入装置と、
前記誘導因子導入細胞を培養して幹細胞からなる複数の細胞魂を作製する細胞塊作製装置と、
前記導入前細胞送液路、前記誘導因子送液機構、前記因子導入装置、及び前記細胞塊作製装置を格納する筐体と、
を備え、
前記細胞塊作製装置が、
前記因子導入装置で作製された誘導因子導入細胞を培養する初期化培養装置と、
前記初期化培養装置で樹立された幹細胞からなる複数の細胞塊を拡大培養する拡大培養装置と、
を備え、
前記初期化培養装置が、前記誘導因子導入細胞に培地を補給する第1の培地補給装置を備え、
前記拡大培養装置が、前記複数の細胞塊に培地を補給する第2の培地補給装置を備える、
幹細胞製造システム。 - 前記第1の培地補給装置が、前記誘導因子導入細胞に前記培地を連続的に補給する、請求項1に記載の幹細胞製造システム。
- 前記第1の培地補給装置が、前記誘導因子導入細胞に前記培地を所定のタイミングで補給する、請求項1に記載の幹細胞製造システム。
- 前記第2の培地補給装置が、前記複数の細胞塊に前記培地を連続的に補給する、請求項1に記載の幹細胞製造システム。
- 前記第2の培地補給装置が、前記複数の細胞塊に前記培地を所定のタイミングで補給する、請求項1に記載の幹細胞製造システム。
- 前記因子導入装置が、
前記導入前細胞送液路に接続された因子導入部と、
前記多能性誘導因子を保存する因子保存部と、
前記因子保存部から前記因子導入部に前記多能性誘導因子を流すための因子送液路と、
前記因子送液路内の液体を流すためのポンプと、
を備える、請求項1に記載の幹細胞製造システム。 - 前記因子導入部において、RNAリポフェクションにより、前記細胞に前記多能性誘導因子が導入される、請求項6に記載の幹細胞製造システム。
- 前記多能性誘導因子がDNA、RNA、又はタンパク質である、請求項6に記載の幹細胞製造システム。
- 前記多能性誘導因子がベクターに組み込まれている、請求項6に記載の幹細胞製造システム。
- 前記ベクターがセンダイウイルスベクターである、請求項9に記載の幹細胞製造システム。
- 前記ポンプがダイヤフラムポンプ、チュービングポンプ、又はペリスタポンプ(登録商標)である、請求項6に記載の幹細胞製造システム。
- 前記初期化培養装置が、
前記誘導因子導入細胞とゲル培地が入れられる透析チューブと、
前記透析チューブが入れられ、前記透析チューブの周囲にゲル培地が入れられる容器と、
を備える、浮遊培養器
を備える、
請求項1又は6に記載の幹細胞製造システム。 - 前記透析チューブの分画分子量が0.1KDa以上である、請求項12に記載の幹細胞製造システム。
- 前記透析チューブがセルロースエステル、セルロースエステル類、再生セルロース、及びセルロースアセテートから選択される少なくとも一つからなる、請求項12又は13に記載の幹細胞製造システム。
- 前記第1の培地補給装置が、前記容器内の前記透析チューブの周囲に前記ゲル培地を補給する、請求項12から14のいずれか1項に記載の幹細胞製造システム。
- 前記第1の培地補給装置が、前記透析チューブ内に前記ゲル培地を補給する、請求項12から14のいずれか1項に記載の幹細胞製造システム。
- 前記補給されるゲル培地が流れる培地送液路を更に備える、請求項15又は16に記載の幹細胞製造システム。
- 前記培地送液路が二酸化炭素透過性である、請求項17に記載の幹細胞製造システム。
- 前記培地送液路内の液体を流すためのポンプを更に備える、請求項17又は18に記載の幹細胞製造システム。
- 前記ポンプがダイヤフラムポンプ、チュービングポンプ、又はペリスタポンプ(登録商標)である、請求項19に記載の幹細胞製造システム。
- 前記補給されるゲル培地を冷蔵保存する冷蔵保存部を更に備える、請求項17から20のいずれか1項に記載の幹細胞製造システム。
- 前記容器に接続された廃液送液路であって、前記容器内のゲル培地を外部に流出させるための廃液送液路を更に備える、請求項12から21のいずれか1項に記載の幹細胞製造システム。
- 前記因子導入装置から前記初期化培養装置に前記誘導因子導入細胞を送るための導入細胞送液路を更に備える、請求項1に記載の幹細胞製造システム。
- 前記導入細胞送液路が二酸化炭素透過性である、請求項23に記載の幹細胞製造システム。
- 前記導入細胞送液路内の液体を流すためのポンプを更に備える、請求項23又は24に記載の幹細胞製造システム。
- 前記ポンプがダイヤフラムポンプ、チュービングポンプ、又はペリスタポンプ(登録商標)である、請求項25に記載の幹細胞製造システム。
- 前記拡大培養装置が、
前記複数の細胞塊とゲル培地が入れられる透析チューブと、
前記透析チューブが入れられ、前記透析チューブの周囲にゲル培地が入れられる容器と、
を備える、浮遊培養器
を備える、
請求項1又は12に記載の幹細胞製造システム。 - 前記透析チューブの分画分子量が0.1KDa以上である、請求項27に記載の幹細胞製造システム。
- 前記透析チューブがセルロースエステル、セルロースエステル類、再生セルロース、及びセルロースアセテートから選択される少なくとも一つからなる、請求項27又は28に記載の幹細胞製造システム。
- 前記第2の培地補給装置が、前記容器内の前記透析チューブの周囲に前記ゲル培地を補給する、請求項27から29のいずれか1項に記載の幹細胞製造システム。
- 前記第2の培地補給装置が、前記透析チューブ内に前記ゲル培地を補給する、請求項27から29のいずれか1項に記載の幹細胞製造システム。
- 前記補給されるゲル培地が流れる培地送液路を更に備える、請求項30又は31に記載の幹細胞製造システム。
- 前記培地送液路が二酸化炭素透過性である、請求項32に記載の幹細胞製造システム。
- 前記培地送液路内の液体を流すためのポンプを更に備える、請求項32又は33に記載の幹細胞製造システム。
- 前記ポンプがダイヤフラムポンプ、チュービングポンプ、又はペリスタポンプ(登録商標)である、請求項34に記載の幹細胞製造システム。
- 前記補給されるゲル培地を冷蔵保存する冷蔵保存部を更に備える、請求項32から35のいずれか1項に記載の幹細胞製造システム。
- 前記容器に接続された廃液送液路であって、前記容器内のゲル培地を外部に流出させるための廃液送液路を更に備える、請求項27から36のいずれか1項に記載の幹細胞製造システム。
- 前記初期化培養装置から前記拡大培養装置に前記誘導因子導入細胞を送るための導入細胞送液路を更に備える、請求項1に記載の幹細胞製造システム。
- 前記初期化培養装置の前記浮遊培養器の前記透析チューブ内と、前記拡大培養装置の前記浮遊培養器の前記透析チューブ内と、を接続する導入細胞送液路を更に備える、請求項27に記載の幹細胞製造システム。
- 前記導入細胞送液路が二酸化炭素透過性である、請求項38又は39に記載の幹細胞製造システム。
- 前記導入細胞送液路内の液体を流すためのポンプを更に備える、請求項38から40のいずれか1項に記載の幹細胞製造システム。
- 前記ポンプがダイヤフラムポンプ、チュービングポンプ、又はペリスタポンプ(登録商標)である、請求項41に記載の幹細胞製造システム。
- 前記初期化培養装置及び前記拡大培養装置の少なくとも一方が、内部に培地が入れられる二酸化炭素透過性バッグを備える、請求項1に記載の幹細胞製造システム。
- 前記細胞塊作製装置が、
前記初期化培養装置で樹立された幹細胞からなる細胞塊を複数の細胞塊に分割する第1の分割機構と、
前記拡大培養装置で拡大培養された幹細胞からなる細胞塊を複数の細胞塊に分割する第2の分割機構と、
を更に備える、請求項1に記載の幹細胞製造システム。 - 前記第1の分割機構が、前記初期化培養装置から前記拡大培養装置に前記誘導因子導入細胞を送るための導入細胞送液路に設けられている、請求項44に記載の幹細胞培養システム。
- 前記第1及び第2の分割機構の少なくとも一方が、前記細胞塊をシングルセルに分割する、請求項44又は45に記載の幹細胞培養システム。
- 前記第1及び第2の分割機構の少なくとも一方が、内部に貫通孔を有する分割器を備え、前記貫通孔が、大孔径部と、前記大孔径部と連通し、前記大孔径部より孔径が小さい小孔径部と、を交互に有し、前記細胞塊を含む培地が、前記貫通孔を流れる、請求項44又は45に記載の幹細胞製造システム。
- 前記大孔径部の中心軸と、前記小孔径部の中心軸と、がオフセットしている、請求項47に記載の幹細胞製造システム。
- 前記第1及び第2の分割機構の少なくとも一方が、それぞれ、内部に貫通孔が設けられた連結ブロックを備え、
当該連結ブロックの第1の端部に凹部が、当該連結ブロックの第2の端部に凸部が設けられており、
当該連結ブロックが複数ある場合に、前記凸部が隣接する連結ブロックの凹部と勘合し、
前記貫通孔が、前記凹部と連通する第1の大孔径部と、前記第1の大孔径部と連通し、前記第1の大孔径部より孔径が小さい小孔径部と、前記小孔径部と連通し、前記小孔径部より孔径が大きく、前記凸部の先端に開口を有する第2の大孔径部と、を有し、
前記細胞塊を含む培地が、前記貫通孔を流れる、
請求項44に記載の幹細胞製造システム。 - 前記連結ブロックが複数あり、当該複数の連結ブロックを連結した場合に、第2の大孔径部が、隣接する連結ブロックの第1の大孔径部と平滑に連通する、請求項49に記載の幹細胞製造システム。
- 前記第1及び第2の大孔径部の中心軸と、前記小孔径部の中心軸と、がオフセットしている、請求項49又は50に記載の幹細胞製造システム。
- 前記第1及び第2の分割機構が、それぞれ、内部に貫通孔が設けられた先端ブロックを更に備え、
当該先端ブロックの第1の端部に凹部が、当該先端ブロックの第2の端部にノズルが設けられており、
当該先端ブロックの凹部が、前記連結ブロックの凸部と勘合し、
前記貫通孔が、前記凹部と連通する大孔径部と、前記大孔径部と連通し、前記大孔径部より孔径が小さく、前記ノズルの先端に開口を有する小孔径部と、を有する、
請求項49から51のいずれか1項に記載の幹細胞製造システム。 - 前記連結ブロックと前記先端ブロックとを連結した際、前記連結ブロックの第2の大孔径部と、前記先端ブロックの大孔径部と、が、平滑に連通する、請求項52に記載の幹細胞製造システム。
- 前記第1及び第2の分割機構が、それぞれ、内部に貫通孔が設けられた末端ブロックを更に備え、
当該末端ブロックの第1の端部に凹部が、前記末端ブロックの第2の端部に凸部が設けられており、
当該末端ブロックの凸部が、前記連結ブロックの凹部と勘合する、
請求項49から53のいずれか1項に記載の幹細胞製造システム。 - 前記第1及び第2の分割機構が、それぞれ、前記末端ブロックの凹部に挿入される挿入ノズルと、
前記挿入ノズルに連通する、前記細胞塊を含む培地を吸引排出する吸引排出器と、
を更に備える、請求項54に記載の幹細胞製造システム。 - 前記複数の細胞塊のそれぞれを順次パッケージするパッケージ装置を更に備え、
前記筐体が前記パッケージ装置を格納する、
請求項1に記載の幹細胞製造システム。 - 前記細胞塊作製装置が、前記複数の細胞魂を前記パッケージ装置に順次送る細胞魂搬送機構を更に備える、請求項56に記載の幹細胞製造システム。
- 前記パッケージ装置が、ペルチェ素子又は液体窒素を用いて前記細胞塊を凍結する、請求項56又は57に記載の幹細胞製造システム。
- 前記パッケージ装置が、気化圧縮又は気化吸収により前記細胞塊を凍結する、請求項56又は57に記載の幹細胞製造システム。
- 筒状部材と、
前記筒状部材の内部に配置された液体透過フィルターと、
を備える溶液置換器であって、
前記筒状部材に、
前記液体透過フィルター上に、前記複数の細胞塊を含む溶液を導入するための細胞塊導入孔と、
前記液体透過フィルター上に、置換溶液を導入するための置換溶液導入孔と、
前記液体透過フィルター上に、前記複数の細胞塊を含む置換溶液を流出するための細胞塊流出孔と、
前記液体透過フィルターを透過した溶液が流出する廃液流出孔と、
が設けられている溶液置換器を更に備える、請求項1又は27に記載の幹細胞製造システム。 - 前記廃液流出孔に接続された廃液送液路を更に備え、
前記複数の細胞塊を含む溶液の溶液を廃棄する際に前記廃液送液路における溶液の流動が許容され、
前記置換溶液中に前記複数の細胞塊を分散させる際に前記廃液送液路における溶液の流動が許容されない、
請求項60に記載の溶液置換器。 - 前記置換溶液が培地、凍結保存液、又は細胞塊分割酵素溶液である、請求項60又は61に記載の溶液置換器。
- 前記拡大培養装置から前記溶液置換器に前記複数の細胞塊を送るための導入細胞送液路を更に備える、請求項60から62のいずれか1項に記載の幹細胞製造システム。
- 前記拡大培養装置の前記浮遊培養器の前記透析チューブ内と、前記溶液置換器の前記細胞塊導入孔と、を接続する導入細胞送液路を更に備える、請求項60から62のいずれか1項に記載の幹細胞製造システム。
- 前記導入細胞送液路が二酸化炭素透過性である、請求項63又は64に記載の幹細胞製造システム。
- 前記導入細胞送液路内の液体を流すためのポンプを更に備える、請求項63から65のいずれか1項に記載の幹細胞製造システム。
- 前記ポンプがダイヤフラムポンプ、チュービングポンプ、又はペリスタポンプ(登録商標)である、請求項66に記載の幹細胞製造システム。
- 血液から細胞を分離する分離装置を更に備え、
前記分離装置で分離された細胞を含む溶液が前記導入前細胞送液路を通過する、
請求項1又は60に記載の幹細胞製造システム。 - 前記分離装置が、磁気細胞分離方法又は赤血球凝固剤を用いる方法によって前記血液から単核球を分離する、請求項68に記載の幹細胞製造システム。
- 前記分離装置が、前記単核球を精製する単核球精製フィルターを更に備える、請求項69に記載の幹細胞製造システム。
- 前記導入前細胞送液路内の液体を流すためのポンプを更に備える、請求項68から70のいずれか1項に記載の幹細胞製造システム。
- 前記ポンプがダイヤフラムポンプ、チュービングポンプ、又はペリスタポンプ(登録商標)である、請求項71に記載の幹細胞製造システム。
- 前記因子導入部と、前記初期化培養装置の浮遊培養器と、前記拡大培養装置の浮遊培養器と、の少なくともいずれかを格納するケースであって、前記筐体内に配置されるケースを更に備える、請求項27に記載の幹細胞製造システム。
- 前記初期化培養装置の浮遊培養器と、前記拡大培養装置の浮遊培養器と、前記ケースと、が使い捨て可能である、請求項73に記載の幹細胞製造システム。
- 前記分離装置と、前記因子導入部と、前記初期化培養装置の浮遊培養器と、前記拡大培養装置の浮遊培養器と、前記溶液置換器と、の少なくともいずれかを格納するケースであって、前記筐体内に配置されるケースを更に備える、請求項68に記載の幹細胞製造システム。
- 前記分離装置と、前記因子導入部と、前記初期化培養装置の浮遊培養器と、前記拡大培養装置の浮遊培養器と、前記溶液置換器と、前記ケースと、が使い捨て可能である、請求項75に記載の幹細胞製造システム。
- 前記筐体内に配置される複数のケースを更に備え、
前記複数のケースのそれぞれに、前記因子導入部と、前記初期化培養装置の浮遊培養器と、前記拡大培養装置の浮遊培養器と、の少なくともいずれかが格納される、請求項27に記載の幹細胞製造システム。 - 前記初期化培養装置の浮遊培養器と、前記拡大培養装置の浮遊培養器と、前記複数のケースと、が使い捨て可能である、請求項77に記載の幹細胞製造システム。
- 前記筐体内に配置される複数のケースを更に備え、
前記複数のケースのそれぞれに、前記分離装置と、前記因子導入部と、前記初期化培養装置の浮遊培養器と、前記拡大培養装置の浮遊培養器と、前記溶液置換器と、の少なくともいずれかが格納される、請求項27に記載の幹細胞製造システム。 - 前記分離装置と、前記因子導入部と、前記初期化培養装置の浮遊培養器と、前記拡大培養装置の浮遊培養器と、前記溶液置換器と、前記複数のケースと、が使い捨て可能である、請求項79に記載の幹細胞製造システム。
- 前記ケースと前記筐体が、互いに勘合する勘合部を備え、前記ケースが前記筐体内の所定の位置に配置される、請求項73から80のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内に前記ケースが配置されると、前記ケース内の送液路と、前記ケース外のポンプと、が接続される、請求項73から81のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内に前記ケースが配置されると、前記ケース内の前記因子導入部と、前記ケース外の前記因子保存部と、が接続される、請求項73から82のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内に前記ケースが配置されると、前記ケース内の前記初期化培養装置の浮遊培養器及び前記拡大培養装置の浮遊培養器と、前記ケース外の培地を保存する培地保存部と、が接続される、請求項73から83のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内に前記ケースが配置されると、前記ケース内の前記初期化培養装置の浮遊培養器及び前記拡大培養装置の浮遊培養器と、前記ケース外の廃液を保管する廃液保管部と、が接続される、請求項73から84のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内に前記ケースが配置されると、前記ケース内の前記分離装置と、前記ケース外の血液を保存する血液保存部と、が接続される、請求項75又は80に記載の幹細胞製造システム。
- 前記筐体内に前記ケースが配置されると、前記ケース内の前記分離装置と、前記ケース外の血液分離剤を保存する分離剤保存部と、が接続される、請求項75、76、及び86のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内に前記ケースが配置されると、前記ケース内の前記溶液置換器と、前記ケース外の凍結保存液を保存する凍結保存液保存部と、が接続される、請求項75又は76に記載の幹細胞製造システム。
- 前記初期化培養装置で培養される細胞を撮影する初期化培養撮影装置と、
前記拡大培養装置で培養される細胞を撮影する拡大培養撮影装置と、
を更に備える、請求項1から88のいずれか1項に記載の幹細胞製造システム。 - 前記初期化培養撮影装置及び前記拡大培養撮影装置は、それぞれ、テレセントリックレンズを介して前記細胞を撮影する、請求項89に記載の幹細胞製造システム。
- 前記初期化培養撮影装置及び前記拡大培養撮影装置の少なくともいずれかで得られた画像にハイパスフィルタを適用する画像処理部を更に備える、請求項89又は90に記載の幹細胞製造システム。
- 前記画像処理部が、前記ハイパスフィルタを適用した画像に分水嶺アルゴリズムを適用して、前記画像中の細胞塊を抽出する、請求項91に記載の幹細胞製造システム。
- 前記画像処理部が、前記画像に分水嶺アルゴリズムを適用する前に、前記画像にDistance Transform法を適用する、請求項92に記載の幹細胞製造システム。
- 前記画像処理部が、前記抽出した細胞魂の大きさを算出する、請求項92又は93に記載の幹細胞製造システム。
- 前記初期化培養撮影装置で撮影された画像から算出された細胞塊の大きさが閾値以上である場合、前記初期化培養装置で樹立された幹細胞からなる複数の細胞塊が前記拡大培養装置に移行される、請求項94に記載の幹細胞製造システム。
- 前記拡大培養撮影装置で撮影された画像から算出された細胞塊の大きさが閾値以上である場合、前記拡大培養装置において、前記複数の細胞塊が継代される、請求項94に記載の幹細胞製造システム。
- 前記初期化培養撮影装置で撮影された画像から算出された細胞塊の大きさに応じて、前記初期化培養装置において培地の供給速度が変化する、請求項94に記載の幹細胞製造システム。
- 前記拡大培養撮影装置で撮影された画像から算出された細胞塊の大きさに応じて、前記拡大培養装置において培地の供給速度が変化する、請求項94に記載の幹細胞製造システム。
- 前記画像処理部が、前記抽出した細胞魂の数を算出する、請求項92又は93に記載の幹細胞製造システム。
- 前記初期化培養撮影装置で撮影された画像から算出された細胞塊の数に応じて、前記初期化培養装置において培地の供給速度が変化する、請求項99に記載の幹細胞製造システム。
- 前記拡大培養撮影装置で撮影された画像から算出された細胞塊の数に応じて、前記拡大培養装置において培地の供給速度が変化する、請求項99に記載の幹細胞製造システム。
- 培地の濁度と、培地中の細胞魂の密度と、の関係を記憶する関係記憶装置を更に備え、
前記初期化培養撮影装置及び前記拡大培養撮影装置の少なくともいずれかで得られた画像に基づき、前記細胞が培養されている培地の濁度の値を算出し、前記算出された濁度の値と、前記関係と、に基づき、撮影された細胞魂の密度の値を算出する画像処理部を更に備える、請求項89又は90に記載の幹細胞製造システム。 - 前記初期化培養撮影装置で撮影された画像から算出された細胞塊の密度が閾値以上である場合、前記初期化培養装置で樹立された幹細胞からなる複数の細胞塊が前記拡大培養装置に移行される、請求項102に記載の幹細胞製造システム。
- 前記拡大培養撮影装置で撮影された画像から算出された細胞塊の密度が閾値以上である場合、前記拡大培養撮影装置において、前記複数の細胞塊が継代される、請求項102に記載の幹細胞製造システム。
- 前記初期化培養撮影装置で撮影された画像から算出された細胞塊の密度に応じて、前記初期化培養装置において培地の供給速度が変化する、請求項102に記載の幹細胞製造システム。
- 前記拡大培養撮影装置で撮影された画像から算出された細胞塊の密度に応じて、前記拡大培養装置において培地の供給速度が変化する、請求項102に記載の幹細胞製造システム。
- 培地の色と、培地の水素イオン指数と、の関係を記憶する関係記憶装置を更に備え、
前記初期化培養撮影装置及び前記拡大培養撮影装置の少なくともいずれかで得られた画像における培地の色の値を算出し、前記算出された色の値と、前記関係と、に基づき、撮影された培地の水素イオン指数の値を算出する画像処理部を更に備える、請求項89又は90に記載の幹細胞製造システム。 - 前記初期化培養撮影装置で撮影された画像から算出された水素イオン指数が所定の範囲外である場合、前記初期化培養装置において培地が交換される、請求項107に記載の幹細胞製造システム。
- 前記拡大培養撮影装置で撮影された画像から算出された水素イオン指数が所定の範囲外である場合、前記拡大培養装置において培地が交換される、請求項107に記載の幹細胞製造システム。
- 前記培地の色が、前記培地の色相である、請求項107から109のいずれか1項に記載の幹細胞製造システム。
- 前記初期化培養装置で測定された水素イオン指数が所定の範囲外である場合、前記初期化培養装置において培地が交換される、請求項1から110のいずれか1項に記載の幹細胞製造システム。
- 前記拡大培養装置で測定された水素イオン指数が所定の範囲外である場合、前記拡大培養装置において培地が交換される、請求項1から110のいずれか1項に記載の幹細胞製造システム。
- 前記導入前細胞送液路の内壁が、細胞非接着性である、請求項1から112のいずれか1項に記載の幹細胞製造システム。
- 前記導入前細胞送液路と、前記誘導因子送液機構と、が、基板上に設けられている、請求項1から113のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内の気体を清浄にする空気清浄装置を更に備える、請求項1から114のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内の気体の温度を管理する温度管理装置を更に備える、請求項1から115のいずれか1項に記載の幹細胞製造システム。
- 前記初期化培養装置及び前記拡大培養装置における培地の温度を管理する温度管理装置を更に備える、請求項1から115のいずれか1項に記載の幹細胞製造システム。
- 前記温度管理装置が、前記培地の温度が所定の範囲より低い場合は、培地の温度を上昇させ、前記培地の温度が所定の範囲より高い場合は、前記培地の温度を低下させる、請求項117に記載の幹細胞製造システム。
- 前記筐体内の気体の二酸化炭素濃度を管理する二酸化炭素濃度管理装置を更に備える、請求項1から118のいずれか1項に記載の幹細胞製造システム。
- 前記筐体内を乾熱滅菌又はガス滅菌する滅菌装置を更に備える、請求項1から119のいずれか1項に記載の幹細胞製造システム。
- 前記誘導因子送液機構、前記因子導入装置、及び前記細胞塊作製装置が、サーバーによって作業手順に基づいて制御され、前記サーバーが、前記誘導因子送液機構、前記因子導入装置、及び前記細胞塊作製装置が前記作業手順に基づいて稼働しているか否か監視し、稼働記録を作成する、請求項1から120のいずれか1項に記載の幹細胞製造システム。
- 内部に細胞塊を含む培地が流れる貫通孔が設けられた連結ブロックを備え、
当該連結ブロックの第1の端部に凹部が、当該連結ブロックの第2の端部に凸部が設けられており、
当該連結ブロックが複数ある場合に、前記凸部が隣接する連結ブロックの凹部と勘合し、
前記貫通孔が、前記凹部と連通する第1の大孔径部と、前記第1の大孔径部と連通し、前記第1の大孔径部より孔径が小さい小孔径部と、前記小孔径部と連通し、前記小孔径部より孔径が大きく、前記凸部の先端に開口を有する第2の大孔径部と、を有する、
細胞塊分割器。 - 前記連結ブロックが複数あり、当該複数の連結ブロックを連結した場合に、第2の大孔径部が、隣接する連結ブロックの第1の大孔径部と平滑に連通する、請求項122に記載の細胞塊分割器。
- 前記第1及び第2の大孔径部の中心軸と、前記小孔径部の中心軸と、がオフセットしている、請求項122又は123に記載の細胞塊分割器。
- 内部に貫通孔が設けられた先端ブロックを更に備え、
当該先端ブロックの第1の端部に凹部が、当該先端ブロックの第2の端部にノズルが設けられており、
当該先端ブロックの凹部が、前記連結ブロックの凸部と勘合し、
前記貫通孔が、前記凹部と連通する大孔径部と、前記大孔径部と連通し、前記大孔径部より孔径が小さく、前記ノズルの先端に開口を有する小孔径部と、を有する、
請求項122から124のいずれか1項に記載の細胞塊分割器。 - 前記連結ブロックと前記先端ブロックとを連結した際、前記連結ブロックの第2の大孔径部と、前記先端ブロックの大孔径部と、が、平滑に連通する、請求項125に記載の細胞塊分割器。
- 内部に貫通孔が設けられた末端ブロックを更に備え、
前記末端ブロックの第1の端部に凹部が、前記末端ブロックの第2の端部に凸部が設けられており、
当該末端ブロックの凸部が、前記連結ブロックの凹部と勘合する、
請求項122から126のいずれか1項に記載の細胞塊分割器。 - 前記末端ブロックの凹部に挿入される挿入ノズルと、
前記挿入ノズルに連通する、前記細胞塊を含む培地を吸引排出する吸引排出器と、
を更に備える、請求項127に記載の細胞塊分割器。 - 培養細胞を撮影する撮影装置と、
前記撮影装置で得られた画像にハイパスフィルタを適用する画像処理部と、
を備える、幹細胞製造システム。 - 前記撮影装置は、テレセントリックレンズを介して前記細胞を撮影する、請求項129に記載の幹細胞製造システム。
- 前記画像処理部が、前記ハイパスフィルタを適用した画像に分水嶺アルゴリズムを適用して、前記画像中の細胞塊を抽出する、請求項129又は130に記載の幹細胞製造システム。
- 前記画像処理部が、前記画像に分水嶺アルゴリズムを適用する前に、前記画像にDistance Transform法を適用する、請求項131に記載の幹細胞製造システム。
- 前記画像処理部が、前記抽出した細胞魂の大きさを算出する、請求項131又は132に記載の幹細胞製造システム。
- 前記撮影装置で撮影された画像から算出された細胞塊の大きさが閾値以上である場合、初期化培養で樹立された幹細胞からなる複数の細胞塊が拡大培養に移行される、請求項133に記載の幹細胞製造システム。
- 前記撮影装置で撮影された画像から算出された細胞塊の大きさが閾値以上である場合、拡大培養において、前記複数の細胞塊が継代される、請求項133に記載の幹細胞製造システム。
- 前記撮影装置で撮影された画像から算出された細胞塊の大きさに応じて、培養器における培地の供給速度が変化する、請求項133に記載の幹細胞製造システム。
- 前記画像処理部が、前記抽出した細胞魂の数を算出する、請求項131又は132に記載の幹細胞製造システム。
- 前記撮影装置で撮影された画像から算出された細胞塊の数に応じて、培養器における培地の供給速度が変化する、請求項137に記載の幹細胞製造システム。
- 培養細胞を撮影する撮影装置と、
培地の濁度と、培地中の細胞魂の密度と、の関係を記憶する関係記憶装置と、
前記撮影装置で得られた画像に基づき、前記細胞が培養されている培地の濁度の値を算出し、前記算出された濁度の値と、前記関係と、に基づき、撮影された細胞魂の密度の値を算出する画像処理部と、
を備える、幹細胞製造システム。 - 前記撮影装置は、テレセントリックレンズを介して前記細胞を撮影する、請求項139に記載の幹細胞製造システム。
- 前記撮影装置で撮影された画像から算出された細胞塊の密度が閾値以上である場合、初期化培養で樹立された幹細胞からなる複数の細胞塊が拡大培養に移行される、請求項139又は140に記載の幹細胞製造システム。
- 前記撮影装置で撮影された画像から算出された細胞塊の密度が閾値以上である場合、拡大培養において、前記複数の細胞塊が継代される、請求項139又は140に記載の幹細胞製造システム。
- 前記撮影装置で撮影された画像から算出された細胞塊の密度に応じて、培養器において培地の供給速度が変化する、請求項139に記載の幹細胞製造システム。
- 培養細胞を撮影する撮影装置と、
培地の色と、培地の水素イオン指数と、の関係を記憶する関係記憶装置と、
前記撮影装置で得られた画像における培地の色の値を算出し、前記算出された色の値と、前記関係と、に基づき、撮影された培地の水素イオン指数の値を算出する画像処理部と、
を備える、幹細胞製造システム。 - 前記撮影装置で撮影された画像から算出された水素イオン指数が所定の範囲外である場合、培養器において培地が交換される、請求項144に記載の幹細胞製造システム。
- 前記培地の色が、前記培地の色相である、請求項144又は145に記載の幹細胞製造システム。
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