WO2015156367A1 - 8角柱の細胞培養用容器 - Google Patents
8角柱の細胞培養用容器 Download PDFInfo
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- WO2015156367A1 WO2015156367A1 PCT/JP2015/061152 JP2015061152W WO2015156367A1 WO 2015156367 A1 WO2015156367 A1 WO 2015156367A1 JP 2015061152 W JP2015061152 W JP 2015061152W WO 2015156367 A1 WO2015156367 A1 WO 2015156367A1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/08—Flask, bottle or test tube
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/20—Material Coatings
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/22—Transparent or translucent parts
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- the present invention relates to a container for cell culture, and more specifically, a closed bottom end used for culturing and proliferating various cells including adherent cells such as mesenchymal cells and mesenchymal stem cells homogeneously and inexpensively.
- the present invention relates to an octagonal cell culture vessel having a liquid opening at the upper end portion and the opposite end portion.
- Various types of cells isolated from the living body are cultured in an artificial environment that mimics the living environment, and gene transfer is performed as necessary, and a large amount of these cells and various factors produced from the cells are introduced. And used for the treatment of various diseases.
- adherence of fibroblasts, mesenchymal cells, mesenchymal stem cells, etc. that have the property of attaching and proliferating by the interaction of various molecules between the cells and the scaffolds
- adherent cells can be proliferated by using a cell culture culture dish having a culture surface made adherent and a container for adherent cell culture such as a culture flask.
- the cell culture vessel is usually composed of one flat plate-shaped culture surface, the area of the culture surface required for growing cells is limited.
- the size of the cell culture vessel can be increased, and the number of cell culture vessels can be increased, the number of steps required for a series of cultures can be reduced. , Increase dramatically in proportion to the increase in container size and number of containers. For this reason, it takes a lot of time and effort to prepare a large amount of homogeneous cells, and the risk of contamination has increased, and there has been a need for ingenuity and proficiency in the work process.
- the device has a substantially cylindrical shape, and the substantially cylindrical portion is
- a roller bottle that is used by continuously rotating around an axis and using the entire inner surface of the substantially cylindrical portion as a culture surface.
- a roller bottle having a structure having axial folds in a substantially cylindrical portion of the roller bottle has also been proposed (Patent Document 1). ).
- the shape of the cross section of the roller bottle is a substantially circular shape, assuring both the maximum culture area and minimizing the difference in surface area between the culture surface and the culture liquid surface. From the shape of the Reuleaux polygon, i.e., the cylindrical part of the bottle was molded so as to be a structure with an odd number of rounded corners and curved sides. A cell culture bottle has also been proposed (Patent Document 2).
- each of the roller bottles described above requires a curved culture surface in order to have a structure capable of culturing cells in large quantities
- detailed information such as the number of cells and the shape of cells being cultured can be examined by microscopy.
- the cell state during culture cannot be managed because it cannot be obtained by means of the above. Therefore, it is necessary to repeat the process of collecting the adherent cells that proliferated by stopping the culture halfway and confirming the number of cells and the cell quality many times before determining the optimal culture conditions. Because of this, many cells are wasted. This is a big problem especially when using cells with an extremely small number of initial cells or difficult to obtain, and it is extremely difficult to complete the condition setting for mass culture. Therefore, improvement of the technique was requested because it was not possible to enter the treatment which was the original purpose.
- mesenchymal stem cells which are adherent cells used for disease treatment, must strictly maintain an undifferentiated state as stem cells. Therefore, in obtaining the necessary number of cells required for treatment, the mesenchymal system is strictly controlled and confirmed so that the number of cells, cell density, culture medium state, etc. are kept constant. Stem cells need to be cultured and expanded. In particular, in order to strictly maintain the undifferentiated state as stem cells, it is important to strictly control so that the number of cells attached to the culture surface and the cell density are constant at the start of culture.
- roller bottles for mass culture are designed to have a cylindrical shape, a cylindrical shape with axial folds, or a polygonal shape of Roule as an essential structure. Therefore, since each bottle has a structure in which the culture surface is curved, a difference in water depth occurs from the culture solution surface of the culture solution to the culture surface inside the bottle. Therefore, at the start of culture, the cell concentration in the center of the bottle where the water depth from the culture surface of the culture medium to the culture surface inside the bottle becomes deeper, and the cells before adhesion gather at the lower part of the curved culture surface and become a cell mass It becomes easy to form.
- cultivation start may become constant, and is not suitable for culture
- Forming a cell mass is not preferable not only in mesenchymal stem cells but also in other adherent cells in order to obtain homogeneous cells.
- the culture surface is curved, the state of cells during culture cannot be confirmed by microscopic examination. Until the cells are detached from the bottle and collected, the presence or absence of cell clumps, Neither the cell density nor the degree of uniformity can be confirmed.
- the problem to be solved by the present invention is to strictly maintain and manage mesenchymal stem cells used for disease treatment while confirming the undifferentiated state as stem cells during culture, and the amount necessary for disease treatment can be obtained
- the cells are cultured in a large amount until the cells are collected uniformly, inexpensively and efficiently.
- the problem to be solved by the present invention is that the amount necessary for disease treatment is obtained while confirming the cell state during culture in order to obtain adherent cells used for disease treatment or factors produced by adherent cells. It is to culture in large quantities until it is obtained, and to recover the cells or the factors homogeneously, inexpensively and efficiently.
- a further problem to be solved by the present invention is to eliminate the drastic increase in cost due to an increase in the amount of pipette and centrifuge tube used to collect cultured cells, which increases the required amount as the culture scale increases, and is inexpensive. It is to provide a mass culture means. In addition, it is possible to provide a container for mass culture that can meet a wide range of culture condition setting requirements, such as coating treatment of the culture surface during mass culture, and various combinations of cell types attached to the culture surface. It is a problem to be solved by the present invention.
- the first means of the present invention for solving the above-mentioned problem is an octagonal cell culture vessel having a liquid opening at a closed lower end and an opposite upper end, and forms the octagonal column.
- Each of the surfaces is a flat shape, and two opposing surfaces among the surfaces forming the octagonal column are horizontal.
- the second means of the present invention for solving the above-mentioned problem is that a neck portion further extends from the liquid opening that opens at the upper end portion, and the neck portion receives a lid with an inner peripheral thread.
- the cell culture vessel according to the first means having an outer peripheral thread.
- the third means of the present invention for solving the above-mentioned problem is that a handle member or a perforated member for holding the cell culture vessel is fixed to the outer periphery of the base portion of the neck on the liquid opening side. It is a container for cell culture of the above-mentioned 1st or 2nd means which has a convex part for carrying out.
- a fourth means of the present invention for solving the above problem is the cell culture vessel according to any one of the first to third means, wherein the closed lower end portion exhibits a conical shape or an octagonal pyramid. .
- the fifth means of the present invention for solving the above problem is that the cell culture container according to any one of the first to fourth means, wherein the outer surface of the cell culture container is graduated. It is.
- the sixth means of the present invention for solving the above-mentioned problems is the above-mentioned first to second aspects, in which each surface forming the octagonal column of the cell culture vessel is marked on the outer side of any surface. 5.
- the seventh means of the present invention for solving the above problem is that the culture surface inside each surface forming the octagonal column of the cell culture container is modified with gelatin, an extracellular matrix or polycations.
- An octagonal cell culture vessel having a liquid opening at the closed lower end and the opposite upper end of the means of the present invention, and each surface forming the octagonal column is planar,
- a cell culture vessel in which two opposing surfaces are horizontal among the surfaces to be formed, it becomes possible to confirm the state of the cells while culturing, and the initial number of cells is extremely small or obtained.
- mass culture conditions can be set, and the culture surface is flat, so that the cell density is uniform and mesenchymal stem cells used for disease treatment
- Adherent cells that need to maintain specific cell properties such as maintaining such an undifferentiated state can be cultured and proliferated uniformly, in large quantities and at low cost.
- the closed lower end has a conical shape or an octagonal pyramid, it becomes a cell culture container having the function of a centrifuge tube, and further cost reduction can be achieved.
- FIG. 2 shows a photograph of a container in which gelatin coating is performed every other surface on the culture surface of the octagonal column cell culture container of the present invention.
- the material used for forming the cell culture container and the lid member of the present invention is not particularly limited, and materials generally used in cell culture can be used.
- the material may be, for example, a resin material and an inorganic material such as glass or quartz, or a metal, but considering the ease of production, cost reduction, and ease of grasping the cell culture state, preferably, Resin material is used.
- a resin material such as an epoxy resin or a vinyl chloride resin, or a resin material containing at least one of the above-described surface hydrophilized treatments can be used.
- polyethylene terephthalate resin or polystyrene resin is preferably used as the resin material.
- the octagonal cell culture container 1 of the present invention has an octagonal cell culture container structure having a closed lower end 2 and a liquid opening 3 at the opposite upper end.
- Each surface forming the octagonal prism is planar, and two opposing surfaces of the surfaces forming the octagonal prism have a substantially horizontal structure.
- closed lower end 2 can have a conical or octagonal structure so that it can be used as a culture centrifuge container as a centrifuge tube in addition to cell culture. . (FIGS. 1 and 2).
- the neck 4 further extends from the liquid opening 2 opened at the upper end, and the neck has an outer thread 6 for receiving a cover 5 with an inner thread.
- the outer periphery of the base portion on the liquid opening side of the neck 4 holds the octagonal column cell culture container upward and horizontally.
- the outer surface of the cell culture vessel 1 may be arbitrarily scaled so that the volume of the culture solution and the amount of cells in the culture vessel can be visually estimated using the scale. Can do. Further, a structure can be provided in which the culture surfaces can be distinguished from each other by marking the outside of any surface of each surface forming the octagonal prism of the cell culture vessel.
- the cell culture vessel 1 must have a thickness that exhibits a wall pressure of sufficient strength when the culture medium is filled and cultured. Furthermore, when the lower end portion has a conical or octagonal pyramid structure and is used not only as a culture vessel but also as a centrifuge tube for cell recovery, it is necessary for the centrifugation required for cell recovery. It should be a cell culture vessel and centrifuge tube with a thickness that is strong enough to withstand.
- the cell culture container of the present invention was manufactured using a mold prepared so as to be molded into the shape of the octagonal column cell culture container 1, and when using the resin material, it was integrally formed by blow molding. Can be.
- the cells of the octagonal column of the present invention are subjected to mirror treatment on the culture surface forming portion of the mold.
- the container can be manufactured after the culture surface of the culture container is in a state of less distortion suitable for spectroscopic examination using various microscopes such as an optical microscope, a fluorescence microscope, and a phase contrast microscope.
- gelatin, extracellular matrix or polycations are added to the culture surface as a component for modifying the culture surface in order to enhance the adhesion of the cells to the culture surface of the octagonal column cell culture container 1 of the present invention. It may be applied to the surface.
- the type of gelatin, extracellular matrix or polycation is not particularly limited as long as it is used for cell culture.
- the extracellular matrix collagen, laminin, fibronectin and the like can be used, and as the polycation, polylysine, polyethyleneimine, polyortinin and the like can be used.
- each of the above components can be applied to a site where it is desired to exhibit higher adhesion to the culture surface, and applied to all eight culture surfaces in the octagonal column cell culture container 1 of the present invention.
- four surfaces may be applied every other surface, only the desired surface may be applied, or different components may be applied depending on the surface.
- the octagonal column cell culture container 1 of the present invention has eight culture surfaces, so that each culture surface can be visually recognized from the outside or recognized by a device and can be distinguished.
- a mark for distinguishing each surface may be attached to the outside of the container.
- the mark can be selected and used, such as characters, symbols, barcodes, patterns, etc., and can be attached by printing with ink or engraving with laser or etching.
- the container mold may be preliminarily marked with a desired mark, and the cell culture container surface may be marked.
- the octagonal column cell culture container 1 of the present invention is marked with a necessary part outside the octagonal column cell culture container 1 and used in combination with a device for identifying the mark.
- the processing apparatus that controls the rotation can accurately identify the culture container and the position of the culture surface in the container, thereby increasing the degree of freedom of the rotation control. Also, when the operator himself / herself controls the rotation of the octagonal column cell culture container of the present invention, the position of the culture surface in the container can be identified, and the accuracy of the work is improved.
- the octagonal column cell culture container 1 of the present invention has a structure in which the lower part 2 of the container has a conical shape or an octagonal pyramid, and is peeled off from the surface of the container culture with a centrifuge.
- a structure having a function as a centrifuge tube that can centrifuge cells can also be used. Therefore, in order to make it possible to visually discriminate the amount of cells and culture solution collected as pellets in the conical or octagonal pyramidal region at the bottom of the container after centrifugation, a scale is added to the outside of the conical or octagonal pyramidal region.
- the scale can be marked by printing with ink or by engraving with laser or etching.
- a scale mark may be attached to the container mold in advance, and the container surface may be manufactured as a scale.
- the turbidity of the culture solution in which the cells are suspended from the outside of the cell culture container is measured before centrifugation. Therefore, by extrapolating the measured value of turbidity, the number of cells in the culture medium in which the cells are suspended can be digitized. It becomes possible to roughly quantify the number of cells in the pellets measured and collected using an instrument.
- the octagonal column cell culture vessel 1 of the present invention can be provided as sterilized.
- a method for sterilizing the cell culture container is not particularly limited, and a method generally used as a method for sterilizing the cell culture container can be used.
- the sterilization method include ⁇ -ray irradiation sterilization, electron beam sterilization, radiation sterilization, ethylene oxide gas sterilization, ultraviolet irradiation sterilization, hydrogen peroxide sterilization, and ethanol sterilization.
- electron beam sterilization or ⁇ -ray irradiation sterilization is preferably used as the sterilization method.
- Electron beam sterilization is performed to such an extent that the cell culture container is not deteriorated, and the irradiation energy of ⁇ rays in the ⁇ -ray irradiation sterilization is about 5 kGy to 30 kGy so that the cell culture container can be sterilized without deterioration.
- the range is preferably within the range, but a suitable sterilization method can be selected and used according to the cells to be used.
- Example 1 The octagonal column cell culture container 1 of the present invention was produced.
- a mold for molding the octagonal column cell culture container 1 and the lid 5 used in accordance therewith was produced.
- the mold is mirror-finished so that the culture surface is smooth, and a scale is attached to the outside of the octagonal pyramid portion at the bottom of the octagonal column cell culture container 1 after molding. I made it.
- the octagonal column cell culture vessel 1 was integrally molded by blow molding using the above mold using polyethylene terephthalate resin. In order to identify each culture surface, the outside of the culture circle of the container was marked with ink. The lid 5 was molded in the same manner. The manufactured octagonal column cell culture container 1 and a part of the lid 5 were sterilized by electron beam sterilization.
- Example 2 A pigmented 2% gelatin solution was prepared.
- the octagonal column cell culture container 1 was laid down so that one of the culture surfaces forming the octagonal column (the surface indicated by No. 1 in FIG. 4) was the bottom surface, and was placed on the upper end of the container. A 2% gelatin solution containing a dye is injected from the liquid opening 3 so as to cover the bottom surface, and left for a certain period of time. 1 was established on the culture surface. The coloring matter is added to easily determine from the outside that the coating treatment with gelatin has been uniformly performed.
- the container With the octagonal column cell culture container 1 lying down sideways, the container is rotated clockwise around the axis of the octagonal column of the container, and the second clockwise from the culture surface that is first the bottom surface.
- the culture surface (No. 3 surface in FIG. 4) was a new bottom surface.
- a 2% gelatin solution containing a dye is injected from the liquid opening 3 provided at the upper end of the container so as to cover the bottom surface, and left for a certain period of time. 1 was established on the culture surface. The above operation was repeated until No. 1 in FIG. 5 and no.
- the gelatin solution was also fixed on the 7th surface.
- each culture surface forming an octagonal column is planar, and two opposing surfaces of the surfaces forming the octagonal column are substantially horizontal. It was revealed that the culture surface can be coated easily and arbitrarily. Further, as described above, since every other surface can be easily treated, the octagonal column cell culture container 1 of the present invention can be used to attach cells desired to be cultured only to a desired surface. It can be easily done.
- Example 3 Adipose-derived mesenchymal stem cells were isolated and cultured from dog subcutaneous adipose tissue. All experiments and procedures were performed according to guidelines established by the institutional committee.
- the dog was anesthetized to obtain subcutaneous adipose tissue.
- the subcutaneous adipose tissue was treated with an enzyme, washed with 1 ⁇ PBS buffer (dilution ratio, 1: 1; v / v), redispersed in 1 ⁇ PBS buffer, and then passed through a syringe multiple times.
- adipose-derived mesenchymal stem cells adhering to the inner wall of the syringe or the needle cavity were collected in the presence of 1 ⁇ PBS buffer containing new EDTA.
- the collected adipose-derived mesenchymal stem cells were washed with 1 ⁇ PBS buffer, and then resuspended in a culture solution supplemented with FBS for culturing at a predetermined number of cells.
- the culture solution 8 in which the fat-derived mesenchymal stem cells are suspended is gently injected into the container through the liquid opening 3 disposed at the upper end of the container.
- a lid 5 was placed on the neck 4 of the head. The lid 5 was not too tightly closed so that the air permeability was sufficiently maintained when the octagonal column cell culture container 1 was allowed to stand in a cell culture incubator.
- the octagonal column cell culture vessel 1 is tilted sideways so that one of the culture surfaces forming the octagonal column (the surface indicated by No. 1 in FIG. 4) is the bottom surface, and the fat-derived mesenchymal stem cells The cells were placed in an incubator for cell culture that had already been set to the temperature, humidity, oxygen, and carbon dioxide concentration.
- the culture surface adjacent to the culture surface that previously became the bottom surface is the new bottom surface.
- the work of rotating clockwise around the axis of the octagonal column of the container was performed. This is repeated at regular time intervals. 3 to No. It was rotated once to the 8th surface.
- the fat-derived mesenchymal stem cells were uniformly attached to the culture surface for every eight culture surfaces in the octagonal cell culture container 1 of the present invention. And when rotating clockwise around the axis of the octagonal column, if the time for standing still is lengthened, the culture surface No. 1 is set. 1 to No. A trend of decreasing cell density over 8 was observed. However, when the standing time was shortened, although the number of cells adhering to each culture surface was small, no difference in cell density was confirmed.
- the octagonal column cell culture container of the present invention optimizes the time during which the culture surface is allowed to stand in the clockwise direction around the axis of the octagonal column. It was found that the adhesion density of stem cells can be made almost constant.
- the octagonal column cell culture vessel 1 having the above-mentioned fat-derived mesenchymal stem cells attached to each surface is allowed to stand in a cell culture incubator, and is further rotated around the axis of the octagonal column of the vessel at regular intervals. The culture was continued while rotating around, followed by microscopic examination. And after opening the lid
- the container is tilted obliquely to leave a pellet of fat-derived mesenchymal stem cells, and unnecessary culture supernatant is decanted from the liquid opening 3 disposed at the upper end of the container. Threw away. Thereafter, a pellet of adipose-derived mesenchymal stem cells was collected.
- Comparative example As a comparative example, a culture solution in which the fat-derived mesenchymal stem cells were suspended was added to a conventional roller bottle, and rotational culture was performed. Since the culture surface of the roller bottle has a curved surface, observation of the entire culture surface with a microscope was not successful. Therefore, after detaching the cells, the number of cells was counted, the cell suspension was transferred to a centrifuge tube and subjected to a centrifugal separation treatment, and the fat-derived mesenchymal stem cells were collected as a pellet. As a result, the cell number increase rate was lower than that of the octagonal column cell culture container of the present invention.
- An octagonal cell culture vessel having a liquid opening at the closed lower end and the opposite upper end of the means of the present invention, and each surface forming the octagonal column is planar,
- the cell culture container in which two opposing surfaces are horizontal among the surfaces to be formed, and the cell culture container having a structure in which the closed lower end portion exhibits a conical shape or an octagonal pyramid, are attached cells. It is possible to confirm the state of cells while culturing, and even when using cells with a very small initial number of cells or difficult to obtain, You can set conditions.
- the culture surface of the culture vessel is flat, it maintains specific cell properties such as maintaining uniformity of cell density and maintaining an undifferentiated state like mesenchymal stem cells used for disease treatment.
- the necessary adherent cells can be cultured and propagated in a homogeneous, large-scale and inexpensive manner. Furthermore, it becomes possible to change the coating process and the cells to be attached for each culture surface, and it is possible to provide a large-scale culture container capable of meeting a wide range of culture condition setting requirements.
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Abstract
Description
また、本発明が解決しようとする課題は、疾患治療に用いる付着性細胞又は付着性細胞により産生される因子を得るために、細胞状態を培養中に確認しながら、疾患治療に必要な量が得られるまで大量培養し、該細胞又は該因子を均質、安価、かつ効率よく回収することである。
本発明が解決しようとするさらなる課題は、培養規模の拡大に伴い必要量が増大する、培養細胞を回収するためのピペットや遠心チューブの使用量増大によるコストの飛躍的増大を解消し、安価な大量培養手段を提供することである。
また、大量培養時の培養面のコーティング処理や、培養面に付着させる細胞の種類を様々に組み合わせるなどの、幅広い培養条件の設定要求に応えることが可能な大量培養用容器を提供することも、本発明が解決しようとする課題である。
本発明の細胞培養容器及び蓋の部材を形成するために用いる材料は特に限定されないが、細胞培養において一般的に用いられる材料を使用することができる。
本発明の8角柱の細胞培養用容器1は、閉塞した下端部2および相対向する上端部に液体用開口3を有する8角柱の細胞培養用容器の構造を有している。そして、上記8角柱を形成する各面が平面状であり、8角柱を形成する各面のうち相対向する2面は、ほぼ水平となっている構造を有している。
本発明の細胞培養容器は、上記8角柱の細胞培養用容器1の形状に成型できるように調製した金型を用いて製造し、上記樹脂材料を用いる場合には、吹き込み成形により一体成形されたものとすることができる。
さらに、本発明の8角柱の細胞培養用容器1の培養面への細胞の付着性を高めるために培養面を修飾するための成分として、ゼラチン、細胞外基質又はポリカチオン類を、培養面の表面に塗布されたものとしても良い。ゼラチン、細胞外基質又はポリカチオン類は、細胞培養に用いられているものであればその種類を特に限定しない。細胞外基質としては、コラーゲン、ラミニン、フィブロネクチンなど、ポリカチオン類としては、ポリリジン、ポリエチレンイミン、ポリオルチニンなどを用いることができる。
また、上記の各成分は、培養面へのより高い付着性を発揮させることを望む部位に塗布することができ、本発明の8角柱の細胞培養用容器1に8面ある培養面全てに塗布しても良く、1面おきに4面塗布しても良く、所望の面のみに塗布しても良く、また、面によって異なる成分を塗布したものとしても良い。
本発明の8角柱の細胞培養用容器1は、培養面が8面存在することから、各々の培養面を外部から視認もしくは機器にて認識し、区別することが可能となるようにするため、容器の外側に、各面を区別するための印を付したものとすることができる。印は、文字、記号、バーコード、模様などの任意のものを選択して用いることができ、インクを用いて印刷するか、レーザーやエッチングで刻入することで付すことができる。また、該容器金型に予め所望の印をつけ、細胞培養用容器表面に印が付されたものとして製造されるようにしても良い。
本発明の8角柱の細胞培養容器1は、滅菌されたものとして提供され得る。細胞培養容器を滅菌する方法は特に限定されないが、細胞培養容器を滅菌する方法として一般に用いられる方法を用いることができる。該滅菌方法としては、例えば、γ線照射滅菌、電子線滅菌、放射線滅菌、エチレンオキサイドガス滅菌、紫外線照射滅菌、過酸化水素滅菌、エタノール滅菌の方法を用いることができる。そして、製造の容易性やコスト低減を考慮し、細胞培養容器を大量かつ簡便に製造するため、該滅菌方法として、好ましくは、電子線滅菌又はγ線照射滅菌を用いる。電子線滅菌は細胞培養容器を劣化させない程度にて行い、また、γ線照射滅菌におけるγ線の照射エネルギーは、細胞培養容器を劣化させない程度にて滅菌することができるよう、5kGy~30kGy程度の範囲までとすることが好ましいが、使用する細胞に合わせて、好適な滅菌方法を選択し用いることができる。
本発明の8角柱の細胞培養用容器1を製造した。8角柱の細胞培養用容器1及びそれに合わせて用いる蓋5を成形するための金型を作製した。該金型には、培養面が平滑となるよう、鏡面処理を施し、また、成形後の8角柱の細胞培養用容器1の下部の8角錐部位の外側に目盛りが付されたものとなるようにした。
色素入りの2%ゼラチン溶液を調製した。
さらに、上記のように、1面おきに容易に処理できたことから、本発明の8角柱の細胞培養用容器1は、所望の面のみに、培養させることを希望する細胞を付着させる作業も、容易になし得ることが明らかとなった。
イヌ皮下脂肪組織から脂肪由来間葉系幹細胞を分離培養した。全ての実験及び術式は、研究施設内委員会が定めた指針に基づき実施された。
そして、更に遠心分離処理を行い、該容器を斜めに傾けて、脂肪由来間葉系幹細胞のペレットを残し、不要な培養上清を、該容器上端部に配した液体用開口3よりデカンテーションにより捨てた。その後、脂肪由来間葉系幹細胞のペレットを回収した。
比較例として、従来のローラーボトルに上記脂肪由来間葉系幹細胞を懸濁した培養液を加え、回転培養を行った。ローラーボトルは培養面が曲面状となっているため、顕微鏡による培養面全体の観察は上手くできなかった。そこで、細胞を剥離させた後、細胞数を計測し、細胞懸濁液を遠心チューブに移して遠心分離処理を行い、脂肪由来間葉系幹細胞をペレットとして回収した。その結果、本発明の8角柱の細胞培養用容器より、細胞数増加率は低かった。
また、培養容器の培養面が平面状であることから、細胞密度の均一性を保ち、疾患治療に用いられる間葉系幹細胞のような未分化状態を維持するなど、特定の細胞性状を維持する必要がある付着性細胞を、均質、大量かつ安価に培養し増殖できるものとなった。
さらに、各培養面毎に、コーティング処理や、付着させる細胞を換えることが可能となり、幅広い培養条件の設定要求に応えることが可能な大量培養用容器を提供することができるようになった。
2 下端部
3 液体用開口
4 首部
5 内周ねじ付きの蓋
6 外周ねじ山
7 凸状部
8 細胞を懸濁した培養液
Claims (8)
- 閉塞した下端部および相対向する上端部に液体用開口を有する8角柱の細胞培養用容器であって、該8角柱を形成する各面が平面状であり、該8角柱を形成する各面のうち相対向する2面が水平である、細胞培養用容器。
- 上記上端部に開口する液体用開口からはさらに首部が延在し、該首部には、内周ねじ付きの蓋を受けるための外周ねじ山を有する、請求項1に記載の細胞培養用容器。
- 上記首部の液体用開口側の根元部の外周には、上記細胞培養用容器を保持するための把手部材もしくは穴空き部材を固定するための凸状部を有している、請求項1又は請求項2のいずれか1項に記載の細胞培養用容器。
- 上記閉塞した下端部が円錐状又は8角錐を呈する、請求項1~請求項3のいずれか1項に記載の細胞培養用容器。
- 上記細胞培養用容器の外側面に目盛りが付されている、請求項1~請求項4のいずれか1項に記載の細胞培養用容器。
- 上記細胞培養用容器の8角柱を形成する各面の、任意の面の外側に印が付されている、請求項1~請求項5のいずれか1項に記載の細胞培養用容器。
- 上記細胞培養用容器の8角柱を形成する各面が、透明性を有する、樹脂材料、ガラス又は石英からなる、請求項1~請求項6のいずれか1項に記載の細胞培養用容器。
- 上記細胞培養用容器の該8角柱を形成する各面の内側の培養面が、ゼラチン、細胞外基質又はポリカチオン類で修飾され、細胞接着性が高められているものである、請求項1~請求項7のいずれか1項に記載の細胞培養用容器。
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EP15776072.9A EP3130659A4 (en) | 2014-04-10 | 2015-04-09 | Octagonal pillar-shaped cell culture container |
JP2016512778A JP6859102B2 (ja) | 2014-04-10 | 2015-04-09 | 8角柱の細胞培養用容器 |
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JP2018000020A (ja) * | 2016-06-28 | 2018-01-11 | 株式会社デンソーウェーブ | 細胞培養容器,自動細胞培養装置,液体収容器,ロボットハンド及びロボットシステム |
WO2018066287A1 (ja) * | 2016-10-05 | 2018-04-12 | 東洋製罐グループホールディングス株式会社 | 細胞培養容器、細胞培養システム、細胞培養方法、及び細胞培養容器の製造方法 |
WO2018135289A1 (ja) * | 2017-01-23 | 2018-07-26 | 東洋製罐グループホールディングス株式会社 | 培養容器、及び細胞培養方法 |
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ES2695798B2 (es) * | 2017-07-04 | 2019-12-04 | Univ Madrid Carlos Iii | Dispositivo rotativo de cambio de objetivo para microscopio de haz láser plano |
TWI661044B (zh) * | 2018-10-19 | 2019-06-01 | 薩摩亞商Scl生物科技有限公司 | 培養瓶及培養瓶組件 |
ES2963127T3 (es) * | 2019-06-21 | 2024-03-25 | Mitsui Chemicals Inc | Material de cultivo y uso del mismo |
EP3978116A1 (de) | 2020-10-01 | 2022-04-06 | Eppendorf AG | Deckelgefäss aus kunststoff und verfahren zum markieren eines deckelgefässes aus kunststoff |
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CN106459859A (zh) | 2017-02-22 |
EP3130659A1 (en) | 2017-02-15 |
CN106459859B (zh) | 2020-05-22 |
JPWO2015156367A1 (ja) | 2017-04-13 |
EP3130659A4 (en) | 2017-12-06 |
US20170029756A1 (en) | 2017-02-02 |
JP6859102B2 (ja) | 2021-04-14 |
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