WO2022231310A1 - 3차원 세포 응집체를 배양하기 위한 세포 배양 장치 및 이를 이용한 세포 배양 방법 - Google Patents
3차원 세포 응집체를 배양하기 위한 세포 배양 장치 및 이를 이용한 세포 배양 방법 Download PDFInfo
- Publication number
- WO2022231310A1 WO2022231310A1 PCT/KR2022/006037 KR2022006037W WO2022231310A1 WO 2022231310 A1 WO2022231310 A1 WO 2022231310A1 KR 2022006037 W KR2022006037 W KR 2022006037W WO 2022231310 A1 WO2022231310 A1 WO 2022231310A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cell culture
- cells
- lower chamber
- porous
- fluid
- Prior art date
Links
- 238000012258 culturing Methods 0.000 title claims abstract description 20
- 238000004113 cell culture Methods 0.000 title claims description 179
- 230000002776 aggregation Effects 0.000 title abstract description 7
- 238000004220 aggregation Methods 0.000 title abstract description 7
- 239000012528 membrane Substances 0.000 claims abstract description 161
- 238000000034 method Methods 0.000 claims abstract description 79
- 210000004027 cell Anatomy 0.000 claims description 150
- 239000012530 fluid Substances 0.000 claims description 108
- 238000012604 3D cell culture Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 210000003098 myoblast Anatomy 0.000 claims description 5
- 210000002889 endothelial cell Anatomy 0.000 claims description 4
- 210000001339 epidermal cell Anatomy 0.000 claims description 4
- 210000002950 fibroblast Anatomy 0.000 claims description 4
- 210000003606 umbilical vein Anatomy 0.000 claims description 4
- 210000004263 induced pluripotent stem cell Anatomy 0.000 claims description 3
- 210000000130 stem cell Anatomy 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 210000004185 liver Anatomy 0.000 claims description 2
- 210000001161 mammalian embryo Anatomy 0.000 claims description 2
- 210000002901 mesenchymal stem cell Anatomy 0.000 claims description 2
- 210000000496 pancreas Anatomy 0.000 claims description 2
- 210000000813 small intestine Anatomy 0.000 claims description 2
- 206010073071 hepatocellular carcinoma Diseases 0.000 claims 1
- 231100000844 hepatocellular carcinoma Toxicity 0.000 claims 1
- 238000012136 culture method Methods 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 210000004379 membrane Anatomy 0.000 description 158
- 239000000243 solution Substances 0.000 description 82
- 125000006850 spacer group Chemical group 0.000 description 61
- 229920000642 polymer Polymers 0.000 description 53
- 238000001523 electrospinning Methods 0.000 description 44
- 239000002121 nanofiber Substances 0.000 description 43
- 239000008151 electrolyte solution Substances 0.000 description 33
- 238000004519 manufacturing process Methods 0.000 description 28
- 239000010410 layer Substances 0.000 description 26
- 239000011148 porous material Substances 0.000 description 25
- 230000008569 process Effects 0.000 description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- QNILTEGFHQSKFF-UHFFFAOYSA-N n-propan-2-ylprop-2-enamide Chemical compound CC(C)NC(=O)C=C QNILTEGFHQSKFF-UHFFFAOYSA-N 0.000 description 23
- 239000001963 growth medium Substances 0.000 description 20
- 235000015097 nutrients Nutrition 0.000 description 19
- 239000000203 mixture Substances 0.000 description 17
- 230000035699 permeability Effects 0.000 description 17
- 230000008859 change Effects 0.000 description 16
- 239000002699 waste material Substances 0.000 description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 239000006143 cell culture medium Substances 0.000 description 15
- 239000003792 electrolyte Substances 0.000 description 15
- 230000000149 penetrating effect Effects 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- 239000000178 monomer Substances 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 12
- 239000003431 cross linking reagent Substances 0.000 description 12
- 238000004049 embossing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 10
- 239000004926 polymethyl methacrylate Substances 0.000 description 10
- 230000003746 surface roughness Effects 0.000 description 10
- 229920002307 Dextran Polymers 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229920001610 polycaprolactone Polymers 0.000 description 9
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 8
- 239000011247 coating layer Substances 0.000 description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 description 7
- 230000001939 inductive effect Effects 0.000 description 7
- 239000012466 permeate Substances 0.000 description 7
- -1 poly(N-isopropylacrylamide) Polymers 0.000 description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 7
- 102000009027 Albumins Human genes 0.000 description 6
- 108010088751 Albumins Proteins 0.000 description 6
- 230000002411 adverse Effects 0.000 description 6
- 238000001727 in vivo Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000024245 cell differentiation Effects 0.000 description 5
- 230000004663 cell proliferation Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 201000007270 liver cancer Diseases 0.000 description 5
- 208000014018 liver neoplasm Diseases 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 239000004632 polycaprolactone Substances 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000003306 harvesting Methods 0.000 description 3
- 239000000017 hydrogel Substances 0.000 description 3
- 210000005229 liver cell Anatomy 0.000 description 3
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000002062 proliferating effect Effects 0.000 description 3
- 230000035755 proliferation Effects 0.000 description 3
- AVSXGQJYEFAQNK-UHFFFAOYSA-N prop-2-enamide;hydrate Chemical compound O.NC(=O)C=C AVSXGQJYEFAQNK-UHFFFAOYSA-N 0.000 description 3
- 229920001661 Chitosan Polymers 0.000 description 2
- 102000008186 Collagen Human genes 0.000 description 2
- 108010035532 Collagen Proteins 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920001436 collagen Polymers 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 210000004748 cultured cell Anatomy 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 230000001605 fetal effect Effects 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002572 peristaltic effect Effects 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229920003213 poly(N-isopropyl acrylamide) Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920005594 polymer fiber Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000035899 viability Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 210000002469 basement membrane Anatomy 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 238000001574 biopsy Methods 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000021164 cell adhesion Effects 0.000 description 1
- 230000006727 cell loss Effects 0.000 description 1
- 238000002659 cell therapy Methods 0.000 description 1
- 230000003833 cell viability Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000011557 critical solution Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000007877 drug screening Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005206 flow analysis Methods 0.000 description 1
- MHMNJMPURVTYEJ-UHFFFAOYSA-N fluorescein-5-isothiocyanate Chemical compound O1C(=O)C2=CC(N=C=S)=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 MHMNJMPURVTYEJ-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003102 growth factor Substances 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- PQLXHQMOHUQAKB-UHFFFAOYSA-N miltefosine Chemical compound CCCCCCCCCCCCCCCCOP([O-])(=O)OCC[N+](C)(C)C PQLXHQMOHUQAKB-UHFFFAOYSA-N 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 210000002220 organoid Anatomy 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000007785 strong electrolyte Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Images
Classifications
-
- 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
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/08—Bioreactors or fermenters specially adapted for specific uses for producing artificial tissue or for ex-vivo cultivation of tissue
-
- 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
- C12M23/12—Well or multiwell plates
-
- 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
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/02—Membranes; Filters
-
- 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
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/02—Membranes; Filters
- C12M25/04—Membranes; Filters in combination with well or multiwell plates, i.e. culture inserts
-
- 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
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/14—Scaffolds; Matrices
-
- 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
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/04—Filters; Permeable or porous membranes or plates, e.g. dialysis
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/44—Means for regulation, monitoring, measurement or control, e.g. flow regulation of volume or liquid level
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0693—Tumour cells; Cancer cells
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2513/00—3D culture
Definitions
- the present invention relates to a culture apparatus and a culturing method for culturing a three-dimensional cell aggregate, and more specifically, to a culture apparatus including a porous microwell and a membrane, and other additional components to effectively cultivate the three-dimensional cell aggregate It's all about cultivating technology.
- the cells in the actual body are three-dimensional, and these cells interact with the microenvironment of the cells in three dimensions.
- the similarity to cells in the body in terms of morphology is greatly lacking, and in the case of three-dimensional culture
- a phenomenon more similar to the actual in vivo phenomenon can be confirmed.
- microwells have limitations in forming 3D cell aggregation because they do not have a porous structure or use plastics, etc., and even if 3D cell aggregates are formed, the process of detachment from the microwell platform is not easy.
- the culture environment that has been previously proposed has a problem of limiting the growth and maturation of three-dimensional cell aggregates because they depend only on passive diffusion for the discharge of waste products and the supply of nutrients generated during culture.
- the present invention has been proposed in view of the above limitations and problems, and relates to a culture apparatus capable of culturing three-dimensional cell aggregates more effectively than before and a culture method using the same.
- the present invention was invented to provide additional technical elements that cannot be easily invented by a person skilled in the art in addition to solving the above technical problems.
- An object of the present invention is to provide an environment capable of forming a three-dimensional cell aggregate, more precisely, a three-dimensional cell spheroid.
- Another object of the present invention is to induce the formation of three-dimensional cell aggregates at the cell culture temperature and maintain the characteristics of easy culture, but at room temperature, a large amount of three-dimensional cell aggregates can be simultaneously detached from the microwell plate.
- Another object of the present invention is to enable the flow control at the lower end of the porous microwell so as to efficiently discharge wastes during stable three-dimensional cell culture and cell culture and smoothly supply nutrients to the lower part of the cells.
- the present invention minimizes the loss of cells and three-dimensional cell aggregates caused by pipetting on the cell culture surface, which is the upper surface of the microwell, for repeated cell culture replacement, which is widely used in the past, and at the same time continuously uniform cells. It aims to provide an environment that can provide an agglomerate surrounding environment.
- the three-dimensional cell culture apparatus includes: an upper chamber including an opening, a porous thin film, and a porous microwell having a cell culture space accommodating a culture medium; and a lower chamber having a space in which the upper chamber is disposed, wherein the fluid flowing into the upper chamber passes through the porous microwell in the upper chamber and flows into the lower chamber, and the fluid in the lower chamber is discharged and may be characterized in that the fluid flows.
- the three-dimensional cell aggregate culture method using the three-dimensional cell culture apparatus, inoculating the cells on the porous membrane of the upper chamber; introducing the cell culture solution into the upper chamber; and discharging the cell culture solution introduced into the lower chamber through the porous microwell in the upper chamber from the lower chamber.
- cells settled in a certain region can more smoothly three-dimensionally proliferate and differentiate.
- microwell plate having a surface structure having a surface roughness that is easy for cell culture and harvesting through temperature change, thereby enabling mass production and harvesting of three-dimensional cell aggregates.
- the height of the culture medium reservoir may be set to correspond to the level of the culture medium in the lower chamber, thereby maintaining a constant height of the culture medium during the culturing process.
- FIG. 1 shows a cell culture vessel according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of one side of a cell culture vessel according to an embodiment of the present invention.
- FIG 3 shows a plate 30 according to an embodiment of the present invention.
- FIG. 4 is an enlarged view of the periphery of one opening 31 in FIG. 2 .
- FIG 5 shows a state in which cells proliferate in a cell culture vessel according to another embodiment of the present invention.
- FIG 6 shows the body 10 and the fastening portion 40 of the cell culture vessel according to another embodiment of the present invention.
- FIG. 7 shows a sequence of a method for manufacturing a cell culture vessel according to another embodiment of the present invention.
- FIG. 8 shows an example of S10 or S100 of a method for manufacturing a cell culture vessel according to another embodiment of the present invention.
- FIG 9 shows an example of S20 or S200 of the method for manufacturing a cell culture vessel according to another embodiment of the present invention.
- FIG 10 shows a photograph of the membrane 20 formed by the method of manufacturing a cell culture vessel according to an embodiment of the present invention.
- 11 shows an image observed from above of the upper chamber of the cell culture vessel manufactured according to another embodiment of the present invention.
- 11B is an enlarged view of one of the plurality of porous microwells of FIG. 11A.
- 12 is a graph showing the change in surface roughness of the cell culture layer according to temperature and time.
- FIG. 13A is an enlarged view of the porous microwell, and FIG. 13B shows that a cell culture layer including polyisopropyl acrylamide is formed on the upper surface of the porous microwell.
- 14A shows an image taken in the process of culturing a three-dimensional cell aggregate.
- 14B shows cell aggregates detached from the well plate.
- 14C shows a photograph of a well plate after cell aggregates are detached.
- Figure 15 (a) is an exemplary view of a three-dimensional cell culture apparatus according to an embodiment of the present invention
- Figure 15 (b) is a portion adjacent to the porous microwell in the upper chamber of the three-dimensional cell culture apparatus of the present invention. It is an exemplary view when a penetration part is formed
- FIG. 15( c ) shows an actual image of the three-dimensional cell culture apparatus.
- Figure 16 (a) is a comparison of the expression level of albumin measured in ⁇ Example 2> and ⁇ Comparative Example 2> of the present invention
- Figure 16 (b) is ⁇ Example 3> and ⁇ Comparative Example> of the present invention
- the concentration of FITC-Dextran measured in 4> is compared.
- FIG. 18 is a schematic diagram illustrating that wastes on an upper surface of a porous microwell are removed by fluid flow and a porous microwell in the lower chamber of the present invention, and a schematic diagram in which a culture solution is diffused into the porous microwell.
- Figure 19 shows a cell culture apparatus according to another embodiment of the present invention
- Figure 19 (a) shows the overall shape of the cell culture apparatus
- Figure 19 (b) is a combination of one upper chamber and lower chamber It is an enlarged view
- FIG. 19( c ) is a cross-sectional view of a cell culture apparatus including a culture medium reservoir connected to an outlet.
- FIG. 21 shows a photomicrograph of a porous microwell in which the porous membrane has a concave portion.
- Fig. 21 (a) is an enlarged image at a magnification of 4 times
- Fig. 21 (b) is a magnification of 220 times.
- Figure 21 (c) shows a photograph of another type of porous microwell in which the porous membrane has a concave portion
- Figure 21 (c) a) is a DSLR camera
- Figures 21 (c) b) and (c) c) are microscope images magnified at 4x and 20x magnifications, respectively.
- 22 shows the structure and property changes of the nanofiber network of the porous membrane according to the electrospinning time.
- Transwellinsert Corning, USA
- 22 (a) is a microscopic image of a commercial membrane and each nanofiber network structure according to a change in electrospinning time at a magnification of 20 times.
- 22(b), (c) and (d) show the porosity (FIG. 22(b)), the hydraulic conductivity of each nanofiber network structure according to the commercial membrane and the electrospinning time (FIG. 22( c)), and the induced pressure.
- Figure 24 is a numerical simulation of the nutrient concentration around the cell aggregate when using the cell culture apparatus according to the present invention and the nutrient concentration around the cell aggregate when the cells are cultured through the cell culture medium replacement method by conventional pipetting. shows the results of comparison.
- 25 is a diagram illustrating a state in which the fluid existing in the cell culture apparatus is smoothly replaced with the newly injected fluid, and the level of the culture medium in the lower chamber is maintained constant in this process.
- 26 shows a method for fabricating a porous microwell.
- FIG. 27 shows a lower chamber (a) used in the cell culture apparatus according to the present invention and an upper chamber (b) inserted into the lower chamber.
- a cell culture vessel which is a basic configuration of the cell culture apparatus according to the present invention, and a method for manufacturing the same will be described.
- FIG. 1 shows a cell culture vessel according to an embodiment of the present invention
- FIG. 2 shows a cross-sectional view of one side.
- FIG. 2 shows a cross-section taken along lines A and A' in FIG. 1 .
- 3 shows a plate 30 according to an embodiment of the present invention.
- the cell culture vessel may include a body 10 and a membrane 20 as shown in FIGS. 1 and 2 , and may further include a plate 30 in addition.
- the plate 30 will be first described, and then the body 10 and the membrane 20 will be described in turn.
- the plate 30 is provided with one or more openings 31 having an opening shape, and the body 10 may be inserted and mounted in the upper opening 31 .
- the opening 31 may be of an open type with the lower part closed and the upper part open as shown in FIG.
- the cell culture vessel may have a receiving space with an open top, and the receiving space may further include a cover vessel for mounting the plate 30 .
- each of the openings 31 may be arranged to be spaced apart from each other, and thus, the influence between samples of each opening 31 may be blocked during cell culture. As a result, a plurality of independent experimental data can be derived using one plate 30 .
- the body 10 includes a spacer SP, an inlet 11 formed at the other end, and a penetrating portion penetrating the spacer and the inlet 11 , respectively.
- the spacer refers to a portion corresponding to the side or sidewall of the body 10, and is denoted by the reference numeral SP in the drawing.
- the outer surface of the spacer faces the inner surface of the opening 31, and it can be seen that a predetermined interval or space exists between the spacer and the inner surface of the opening.
- the spacer SP of the body 10 may be inserted into the opening 31 of the plate 30 .
- the body 10 may include one insertion part or a plurality of insertion parts. That is, when including one insertion part, the body 10 may be inserted into the corresponding insertion part into one opening 31 .
- the body 10 when including a plurality of inserts, the body 10 may be inserted into each insert corresponding to the plurality of openings (31).
- the body 10 when including a plurality of inserts, has a structure in which each insert is connected to each other, and each insert can be inserted corresponding to each opening 31 .
- 1 to 6 show the body 10 including one insertion part, but the present invention is not limited thereto. Of course it can be applied.
- the spacer of the body 10 When the spacer of the body 10 is inserted into the opening 31 , the spacer of the body 10 is located at the lower part, and the inlet part 11 of the body 10 is located at the upper part.
- the spacer of the body 10 may have a vertical shape having a constant width from one end to the other end, a funnel shape gradually increasing in width from one end to the other end, or a combination of a vertical shape and a funnel shape.
- the penetrating portion of the body 10 may be formed in various shapes, such as circular, polygonal, and the like in cross section, and may be formed in various sizes.
- the inlet of the body 10 is positioned to be spaced apart from the bottom surface of the cell culture vessel by a predetermined distance, the inlet of the body 10
- the portion 11, as shown in FIG. 4, preferably has a cross section wider than the inlet of the spacer and the opening 31 of the body 10. Accordingly, in the space between the spacer of the body 10 and the bottom surface of the cell culture vessel, a passage of a fluid having nutrients for supplying the cells may be formed.
- the bottom surface of the cell culture vessel may be the bottom surface of the open portion in the case of an open plate, and may be the bottom surface of the cover vessel in the case of a through-type plate.
- the membrane 20 is a layer that provides a cell culture surface in which cells are cultured, and is employed in the penetrating portion of the spacer side of the body 10 .
- the membrane 20 may be formed through an electrospinning method to cover one end of the spacer of the body 10 .
- the membrane 20 may be formed by randomly intertwining a plurality of polymer nanofibers or by molding a polymer synthetic resin.
- each polymer nanofiber may have a diameter of 1 nm or more to less than 1000 nm.
- the membrane 20 has a structure similar to the basement membrane in vivo, thereby providing an in vivo blood flow environment.
- the polymer nanofibers or the synthetic polymer resin may include at least one of a thermoplastic resin, a thermosetting resin, an elastomer, and a biopolymer.
- polymer nanofibers or polymer synthetic resins are polycaprolactone, polyurethane, polyvinylidene fluoride (PVDF), polystyrene, collagen, gelatin. ), may include at least one or more of chitosan (chitosan).
- the membrane 20 may include a porous microwell 21 , a connection part 22 , and a fixing part 23 .
- the microwell 21 , the connection part 22 , and the fixing part 23 have a structure connected to each other by entanglement of a plurality of polymer nanofibers.
- the microwell 21 is a region serving as a cell culture surface and is concave in the downward direction. Due to this concave shape, cells are easily seated in the microwell 21 , and can stably proliferate in the microwell 21 irrespective of the movement of the fluid. At this time, at least one of the microwells 21 is located in a region formed by the penetrating portion of the body 10 . That is, when viewed from the top or bottom, the microwell 21 is smaller in size than the penetration portion of the body 10 and is included in the region formed by the penetration portion.
- the membrane 20 allows the cells to be more intensively and stably attached to the cell culture surface and increases the area of the cell culture surface, can improve the adhesion efficiency of
- the body 10 of the cell culture vessel according to the present invention is provided with a cell culture surface of a three-dimensional shape, through which the in vivo Cells can be cultured in a three-dimensional structural environment, such as a three-dimensional cell spheroid.
- the spacer of the body 10 has a plurality of cell culture surfaces to further improve cell adhesion efficiency.
- connection part 22 is a region formed around an arbitrary microwell 21 to connect between the microwells 21 and may have a flat shape.
- the connecting portion 22 may have a thickness greater than that of the microwell 21 . This corresponds to a region in which the microwell 21 extends in a lower concave shape among the membrane 20 and becomes thinner than the original by an embossing process to be described later, whereas the connection part 22 corresponds to an area in which the original thickness is not increased. because it keeps
- the fixing part 23 is a region fixed to the edge of one end of the spacer of the body 10 .
- the fixing part 23 may have a thinner thickness and a lower density than the connection part 22 .
- the membrane 20 can be formed through an electrospinning method using an electrolyte solution. That is, since the microwell 21 and the connection part 22 correspond to a region generated at a position containing the electrolyte solution during electrospinning, a greater number of polymer nanofibers than the fixing part 23 are formed to form the fixing part 23 ) and may be formed to have a higher density and a thicker thickness.
- 5 shows a state in which cells proliferate in the cell culture vessel according to the present invention.
- 5(a), 5(b), and 5(c) sequentially show cell proliferation over time under the fluid concentration phenomenon.
- the membrane 20 includes a plurality of holes formed in the region between the polymer nanofibers.
- the pores may have a size of several ⁇ m to several tens of ⁇ m. Due to the pores, the membrane 20 may act as a selective permeation membrane that does not permeate single cells but selectively permeates other materials, thus serving as a material transfer barrier and passage.
- the first porosity formed by the first voids formed in the microwell 21 and the second porosity formed by the second voids formed in the connection part 22 may be different from each other.
- the porosity may be a ratio of the pore area existing in the unit area.
- the first porosity may be greater than the second porosity. This is because the region corresponding to the microwell 21 in the membrane 20 is stretched into a lower concave shape by the embossing process, and a plurality of parts blocked by the entangled polymer nanofibers are opened or already opened in the corresponding region.
- the present invention is not limited to having only these two porosity. That is, the present invention may have various porosity in addition to the first porosity and the second porosity.
- cell proliferation in the microwell 21 may be more actively performed while a fluid concentration phenomenon occurs in the area around the microwell 21 . This is because the higher the porosity region, the higher the material permeability according to Darcy's equation.
- the opening 31 of the plate 30 is filled with a fluid (eg, a cell culture solution, a mixture of distilled water, PBS solution, etc.), and this fluid is periodically replaced using a dropper or the like. have to do it
- the fluid may be replaced, for example, by a method in which a new fluid is supplied to the inside of the body 10 while the fluid is sucked out from the outside of the body 10 . This is because, when the fluid is sucked and discharged from the inside of the body 10 , there is a risk of adversely affecting cells that are seated in the microwell 21 and proliferating and differentiated or that the cells are discharged together.
- the fluid filled in the accommodating space accommodating the microwell 21 passes from the upper side to the lower side of the microwell 21 and the connection part 22 .
- the microwell 21 has a greater porosity than the connection part 22 , as shown in FIG. 5 , more fluid permeates than the connection part 22 . Accordingly, a phenomenon in which the fluid moves more intensively in the periphery of the microwell 21 than in the periphery of the connection part 22 , that is, a fluid concentration phenomenon occurs.
- the cell culture vessel according to the present invention uses a single plate 30 for a plurality of independent experimental data tested in a three-dimensional structure environment such as in vivo. can be derived by
- FIG 6 shows the body 10 and the fastening portion 40 of the cell culture vessel according to another embodiment of the present invention.
- the cell culture vessel according to another embodiment of the present invention may further include a fastening part 40 having one end and the other end penetrated therethrough and fastened to one end of the spacer of the body 10 as shown in FIG. 6 . .
- the fastening part 40 may include one through-portion or a plurality of through-portions. That is, when including one through-portion, the fastening part 40 may be fastened to each spacer of the body 10 and may be formed in a ring shape. In addition, when including a plurality of through portions, the fastening portion 40 may be fastened with each through portion corresponding to each spacer of the body 10 . 6 illustrates a case in which the fastening part 40 includes one through-portion, but the present invention is not limited thereto. Of course it can be applied.
- the membrane 20 is not provided at one end of the spacer of the body 10 but the membrane 20 is provided at one end of the fastening unit 40 , or the spacer end of the body 10 is provided with the membrane 20 . And the membrane 20 may be provided together at one end of the fastening part 40 .
- the fastening part 40 is fastened to the spacer of the body 10 , the through part of the fastening part 40 and the through part of the body 10 are connected to each other.
- the fastening part 40 may be provided in a form that is detachable (mounted and separated) from one end of the spacer of the body 10 .
- a screw thread is formed inside or outside the fastening part 40
- a thread corresponding to the screw thread of the fastening part 40 may be formed on the outside or inside of one end of the body.
- the fastening portion 40 as shown in Fig. 6 (b), is fitted to the inner circumferential surface of the penetrating portion of one end of the spacer of the body 10, or, as shown in Fig. 6 (c), the body 10 ) can be fitted to the outer circumferential surface of one end of the spacer.
- the membrane 20 provided at one end of the fastening unit 40 is the same except for replacing the spacer of the body 10 with the fastening unit 40 in the membrane 20 provided at one end of the spacer of the body 10 described above. do. That is, the position of the membrane 20 provided at one end of the fastening part 40 is changed from one end of the spacer of the body 10 to one end of the fastening part 40 . Therefore, the detailed description of the membrane 20 provided at one end of the fastening part 40 will be omitted below and will be replaced with the description of the membrane 20 provided at one end of the spacer of the body 10 described above.
- a method for manufacturing such a cell culture vessel includes a method of manufacturing the microwell 21 or the membrane 20 .
- FIG. 7 shows a sequence of a method for manufacturing a cell culture vessel according to the present invention.
- the method of manufacturing a cell culture vessel according to an embodiment of the present invention includes preparation steps (S10, S100) and forming steps (S20, S200).
- S10 and S20 are methods of manufacturing the above-described body 10 and membrane 20
- S100 and S200 are methods of manufacturing the above-described body 10 , membrane 20 and fastening part 40 .
- S10 is a step of preparing the body 10 and the membrane 20 .
- S100 is a step of preparing the body 10 , the membrane 20 and the fastening part 40 .
- the membrane 20 may be formed through an electrospinning method using an electrolyte solution, and the electrospinning method using an electrolyte solution will be described below.
- FIG. 8 shows an example of S10 or S100 of a method for manufacturing a cell culture vessel according to another embodiment of the present invention.
- the electrospinning method using an electrolyte solution forms the membrane 20 to cover one end of the spacer or the fastening part 40 of the body 10, and may be performed inside the chamber.
- the chamber is a space in which work is performed, and when the membrane 20 is formed, external leakage of the polymer solution can be prevented.
- an electrospinning method using an electrolyte solution for forming the membrane 20 on one end of the spacer of the body 10 is referred to as a “first electrospinning method”, and an electrolyte for forming the membrane 20 at one end of the fastening part 40 .
- the electrospinning method using a solution is referred to as a “second electrospinning method”. First, the first electrospinning method will be described.
- the first electrospinning method may sequentially include an electrolyte filling step, a voltage application step, and a membrane formation step.
- the electrolyte filling step is a step of filling the electrolyte solution 50 in the spacer of the body 10 formed so that one end and the other end pass through, as shown in FIG. 8( a ).
- the body 10 is disposed so that one end of the spacer faces upward and the other end is blocked.
- the electrolyte solution 50 is filled with one end of the spacer of the body 10 .
- a stopper is provided to block the inlet 11 of the body 10 , and an electrode for applying a voltage to the electrolyte solution 50 may be provided in the stopper. That is, the electrode is formed to pass through the stopper and may be connected to the electrolyte solution 50 filled in the spacer of the body 10 .
- the spacer of the body 10 is disposed in the electrolyte container 60 filled with the electrolyte solution 50, but one end of the spacer of the body 10 is upper It is also possible to fill the electrolyte solution 50 in the penetrating portion of the body 10 by disposing to face.
- the spacer of the body 10 is disposed as the receiving space of the electrolyte container 60
- the spacer of the body 10 comes into contact with the surface of the electrolyte solution 50 and a pressure is generated to press the surface of the electrolyte solution 50 , and the The electrolyte solution 50 is filled with the spacer of the body 10 by the pressure.
- the receiving space of the electrolyte container 60 may be formed to match the spacer shape of the body 10 so that the pressure on the surface of the electrolyte solution 50 can be better generated.
- the electrolyte solution 50 Since the electrolyte solution 50 has conductivity, when a voltage is applied in the voltage application step, it takes on a (-) charge and attracts particles having a (+) charge by electrical attraction, and thus, particles having a (+) charge may be integrated on top of the electrolyte.
- the electrolyte solution 50 is classified into a strong electrolyte and a weak electrolyte according to the degree of dissociation. The degree of dissociation depends on the solvent.
- the electrolyte solution 50 a solution in which potassium chloride and distilled water are mixed in a 3% mol ratio may be used.
- any material and concentration having an electrical conductivity higher than 1 mS/cm dissolved in water or an organic solvent (ethanol, methanol) may be used as the electrolyte solution 50 .
- any material and concentration having a relative permittivity higher than 80 F/m dissolved in water may be used as the electrolyte solution 50 .
- the voltage application step is a step of applying a voltage between the electrolyte solution 50 and the metal needle 71 of the electrospinning machine 70, as shown in FIG. 8(c). At this time, the voltage is supplied through the power supply, and the structure of the membrane 20 formed in the membrane forming step may be changed according to the change in the intensity of the applied voltage.
- An electric field is formed between the electrolyte solution 50 and the metal needle 71 of the electrospinning machine 70, and when the strength of the electric field formed at this time is too low, the polymer solution is not continuously discharged and a polymer having a uniform thickness It may be difficult to manufacture the nanofibers, and it may be difficult for the prepared polymer nanofibers to be smoothly focused on the electrolyte solution 50 . Conversely, when the strength of the electric field is too high, it may be difficult to have a normal shape because the polymer fibers are not accurately seated on the upper surface of the electrolyte solution 50 . In consideration of this content, the strength of the voltage applied to the electrolyte solution 50 and the metal needle 71 of the electrospinning machine 70 may be 5 kV to 30 kV.
- a negative (-) voltage may be applied to the electrolyte solution 50
- a positive (+) voltage may be applied to the metal needle 71 . Accordingly, the electrolyte solution 50 has a negative (-) charge, and the polymer solution radiated in the membrane formation step has a positive (+) charge.
- the membrane forming step is a step of forming the membrane 20 by radiating a polymer solution to the spacer of the body 10 through the electrospinning machine 70 in a state in which a voltage is applied, as shown in FIG. 8(c). .
- the membrane 20 is formed in a network shape in which a plurality of polymer nanofibers are randomly entangled due to the high degree of freedom of the electrolyte solution 50 .
- the electrospinning machine 70 is a device for supplying a polymer solution. That is, the electrospinning machine 70 may discharge the polymer solution through the metal needle 71 after storing the polymer solution to have an appropriate viscosity for electrospinning. At this time, the discharged polymer solution may be cured simultaneously with scattering to form polymer nanofibers.
- the metal needle 71 is configured to discharge the polymer solution. As it is made of a metal material, the metal needle 71 is easy to connect to the power supply, and the charge charging efficiency of the polymer solution discharged when a voltage is applied from the power supply can be improved. In particular, the metal needle 71 is located in the upper portion spaced apart from the spacer of the body 10, but the discharge end is disposed to face the spacer of the body 10 can radiate the polymer solution.
- the electrospinning machine 70 may be composed of a syringe, a syringe pump, and a metal needle 71 . That is, the polymer solution can be put into the syringe and the polymer solution can be discharged into the air with the metal needle 71 through the power of the syringe pump. At this time, the metal needle 71 may use a 23 gauge needle, but the size may vary depending on the polymer solution.
- the polymer solution may be spun at a discharge rate of 0.01 ml/h to 3 ml/h so that the polymer fibers can be placed on the surface of the electrolyte solution 50 while maintaining the surface shape of the electrolyte solution 50 .
- the polymer nanofibers may have a diameter of 10 nm to 900 nm.
- polymer solution a solution having a concentration of 5% to 25% in which chloroform and methanol are mixed in a mass ratio of 1: 1 and polycaprolactone can be used.
- a solution of 25% to 30% concentration in which polyvinylidenefluoride (PVDF) is mixed is used as a polymer solution.
- PVDF polyvinylidenefluoride
- a polymer solution may be prepared using polystyrene, polycarbonate, collagen/polycarbonate blending solution, gelatin, or the like.
- the electrical attraction generated between the through-portion on the spacer side of the body 10 filled with the electrolyte solution 50 and the polymer solution is constant, but between the edge of the spacer of the body 10 and the polymer solution. It may be larger than the generated electrical attraction. Accordingly, the region of the membrane 20 (hereinafter referred to as “through-portion region”) that is integrated into the through-portion on the spacer side of the body 10 filled with the electrolyte solution 50 has a constant but relatively large density and thickness. .
- the magnitude of the electrical attraction generated between the edge of the spacer of the body 10 and the polymer solution is small compared to the magnitude of the electrical attraction generated between the penetrating portion of the spacer of the body 10 and the polymer solution, and the body ( 10), it becomes smaller as it goes away from the penetrating part of the spacer. Accordingly, the fixing part 23 , which is the membrane 20 integrated on the rim of the spacer of the body 10 , is not constant but has a relatively small density and thickness.
- the membrane forming step may further include adjusting any one or more of the thickness, porosity, and transparency of the membrane 20 formed on one end of the spacer of the body 10 by adjusting the radiation time of the electrospinning machine 70 . That is, as the spinning time of the electrospinning machine 70 increases, the amount of polymer nanofibers to be integrated increases. Accordingly, as the thickness of the membrane 20 formed on one end of the spacer of the body 10 increases, the porosity and transparency thereof decrease.
- the membrane forming step may further include adjusting the diameter of the polymer nanofibers of the membrane 20 formed by adjusting the concentration of the polymer solution. That is, as the concentration of the polymer solution increases, the viscosity increases, so that the diameter of the polymer nanofibers of the membrane 20 formed at one end of the spacer of the body 10 increases.
- the second electrospinning method includes an electrolyte filling step, a voltage application step, and a membrane forming step in the same manner as the first electrospinning method, and may further include a fastening part fastening step.
- the electrolyte filling step, the voltage application step, and the membrane forming step are the same except for replacing the spacer of the body 10 with the fastening part 40 in the first electrospinning method described above. Therefore, detailed descriptions of the electrolyte filling step, voltage application step, and membrane formation step of the second electrospinning method are omitted below and the description of the electrolyte filling step, voltage application step and membrane formation step of the first electrolyte electrospinning method described above will be replaced. let it do
- the membrane 20 may be formed on one end of the fastening part 40 through the electrolyte filling step, the voltage application step, and the membrane forming step.
- the fastening step is a step of fastening the fastening part 40 in which the membrane 20 is formed to one end of the spacer of the body 10 formed so that one end and the other end pass therethrough.
- the fastening step of the fastening part may be performed by a transfer device that transports the spacer or the fastening part 40 of the body 10 to fasten the spacer and the fastening part 40 of the body 10 .
- the first electrospinning method and the second electrospinning method may further include cutting the membrane 20 formed according to the shape of the spacer or the fastening part 40 of the body 10 after forming the membrane 20 .
- FIG 9 shows an example of S20 or S200 of the method for manufacturing a cell culture vessel according to another embodiment of the present invention.
- S20 is a step of performing an embossing process on the membrane 20 formed on the spacer of the body 10 .
- S200 is a step of performing an embossing process on the membrane 20 formed on the fastening part 40 .
- an embossing process is performed on the membrane 20 prepared in S10 or S100 using the mold M in which the pattern of the microwell 21 is formed.
- the embossing process is a process of forming a pattern on the membrane 20 corresponding to the pattern of the mold M by pressing the membrane 20 with the mold M. That is, as a result of the embossing process, the microwell 21 and the connection part 22 may be formed in the membrane 20 .
- the embossing process may be a hot embossing process of pressing the membrane 20 with the heated mold M, but is not limited thereto. In the case of using the hot embossing process, the result of S20 can be derived more quickly.
- the mold M may include a first mold M1 having a lower portion protruding according to the pattern of the microwell 21 and a second mold M2 having a concave upper portion according to the pattern of the microwell 21 . That is, the membrane 20 is placed between the first mold M1 and the second mold M2, and the first mold M1 and the second mold M2 are pressed to combine and separate to form the membrane 20. A microwell 21 and a connection part 22 may be formed. When combined, the protruding portion of the first mold M1 is in contact with one surface of the membrane 20 , and the concave portion of the second mold M2 is in contact with the other surface of the membrane 20 .
- either one of the first mold M1 and the second mold M2 may be heated, or both the first mold M1 and the second mold M2 may be heated before merging.
- the protruding shape of the first mold M1 has a greater influence on the formation of the microwell 21 , it may be preferable to heat and use only the first mold M1 .
- the temperature of the heated first mold M1 or the second mold M2 is lower than the melting point of the polymer nanofibers constituting the membrane 20 .
- FIG. 10 shows a photograph of the membrane 20 formed by the method of manufacturing a cell culture vessel according to an embodiment of the present invention.
- FIG. 10(c) shows a plan view of the membrane 20
- FIG. 10(d) shows a plan view of the microwell 21 and the connection part 22, which are enlarged views of FIG. 10(c).
- FIG. 10(a) shows an enlarged photograph of the microwell 21, and
- FIG. 10(b) shows the first void formed in the microwell 21 of FIG. 10(a).
- FIG. 10(e) shows an enlarged photograph of the connection part 22, and
- FIG. 10(f) shows the second void formed in the connection part 22 of FIG. 10(e).
- the membrane 20 formed by the method for manufacturing a cell culture vessel according to an embodiment of the present invention as shown in FIGS. it can be confirmed that
- the first pores formed in the microwell 21 in the membrane 20 formed by the method for manufacturing a cell culture vessel according to an embodiment of the present invention, the first pores formed in the microwell 21 . It can be seen that the number of the second voids formed in the silver connection part 22 is larger than that of the second voids. At this time, it can be seen that the first porosity is increased by about 10 times or more compared to the second porosity.
- a cell culture vessel and a manufacturing method thereof were examined with reference to FIGS. 1 to 10 .
- some conditions were mentioned about what condition the porosity of parts constituting the membrane, such as a microwell or a connection part, should have, but the cell culture vessel according to the present invention is a fluid Alternatively, it is sufficient if only enough pores are formed through which the material can pass, and the porosity may have any numerical value without any restrictions. That is, in all the examples mentioned in the present detailed description, the existence of pores is naturally recognized, but it is understood that the difference in porosity is not an essential limitation in implementing a cell culture vessel.
- FIGS. 11 to 14 Another embodiment of the microwell and plate will be described with reference to FIGS. 11 to 14 .
- porous microwell 21 and the plate 30 were described.
- a coating composition having a surface structure change according to temperature is coated on the porous microwell 21 to , it is possible to implement a cell culture vessel including a cell culture layer whose surface structure changes according to temperature.
- the cell culture layer having a surface structure change according to temperature has a surface structure suitable for culturing cells due to high adhesion to cells at a temperature of more than 32° C. to 40° C. or less on the upper surface of the porous microwell 21, and is 0° C. or higher At a temperature of less than 32° C., it has a surface structure suitable for detachment of cells and may be formed in a form suitable for recovering cells.
- the cell culture layer may include poly(N-isopropylacrylamide), PNIPAAm), and the surface roughness may be 4 to 37 nm, preferably 20 to 32 nm, at more than 32 ° C. to 40 ° C. or less. and a surface roughness of 4 ⁇ m or more at 0° C. or higher to less than 32° C. may have a surface roughness change characteristic according to temperature.
- the surface roughness was measured with a non-contact atomic force microscope (Park Systems, Korea) using a PPP-NCHR cantilever using a frequency of 300 kHz or a BL-AC40TS cantilever using a frequency of 25 kHz. it means.
- the cell culture layer may include 1 to 5% by weight of the crosslinking agent based on the total weight of the cell culture layer, preferably more than 1% to less than 3% by weight. If the content of the crosslinking agent is less than 1% by weight, there may be a problem that cells do not adhere well to the cell culture layer, and if it exceeds 5% by weight, the temperature below the LCST (lower critical solution temperature) There may be a problem that the detachment of cell spheroids does not occur well.
- the LCST lower critical solution temperature
- the porous microwell 21 has permeability to the fluid, portions other than the porous microwell 21 have no permeability to the fluid.
- the pores of the porous microwell 21 may have a pore size of 100 nm to 20 ⁇ m in average diameter, and preferably, a pore size of 100 nm to 5 ⁇ m. Due to such a pore size, the porous microwell can act as a selective permeation membrane that selectively permeates other materials while not permeating single cells, thereby serving as a material transfer barrier and passage.
- a fluid concentration phenomenon may occur in the porous microwell 21 as described above. have.
- oxygen and nutrients contained in the fluid can be smoothly supplied to cells that are proliferating and differentiated in the porous microwell, thereby further promoting cell proliferation and differentiation.
- a phenomenon in which cells are gathered into the porous microwell due to such a fluid concentration phenomenon also occurs, thereby facilitating the formation of cell aggregates or spheroids.
- the cell culture vessel of the present invention may include an upper chamber 100 and a lower chamber 200 as shown in FIG. 1 .
- the lower chamber 200 may be a chamber in which the upper chamber 100 is disposed or mounted so that a cell culture solution or the like can flow.
- the present invention can use a lower chamber in which a plurality of upper chambers can be disposed so that several cells can be simultaneously cultured, and the number of the upper chambers can be used without limitation as long as it is a number commonly used in the art. .
- the method includes an N-isopropylacrylamide monomer, a crosslinking agent and the remainder of water, and the crosslinking agent is 1 part by weight or more to 5 parts by weight based on 100 parts by weight of a mixture of N-isopropylacrylamide monomer and water providing an aqueous coating solution that is less than; forming a coating layer using the aqueous coating solution on the upper surface of the porous microwell of a well plate chamber including the porous microwell at the lower portion; and irradiating UV to the coating layer to form a cell culture layer.
- the rate of cell detachment can be adjusted according to the temperature change of the support for cell culture, and as described above, the cross-linking agent is based on 100 parts by weight of a mixture of N-isopropyl acrylamide monomer and water. As 1 part by weight or more to less than 5 parts by weight, preferably more than 1 part by weight to less than 3 parts by weight may be.
- the content of the crosslinking agent is less than 1 part by weight based on 100 parts by weight of the mixture of N-isopropylacrylamide monomer and water, there may be a problem that cells do not adhere well to the cell culture support, and if it is 5 parts by weight or more, LCST At a temperature lower than the temperature, there may be a problem that the detachment of cells does not occur well.
- the crosslinking agent serves to polymerize the N-isopropyl acrylamide monomer into polyisopropyl acrylamide, and a conventional method used for preparing polyisopropyl acrylamide, that is, homopolymerization, copolymerization And if it is a crosslinking agent that can be used for terpolymerization, cross-linked polymerization, etc., it can be used without limitation, preferably N,N'-methylenebisacrylamide (N,N-Methylenebisacrylamide; MBAAm) and tetra Methylethylenediamine (tetramethylethylenediamine, TEMED) or a mixture thereof may be used as the crosslinking agent.
- N,N'-methylenebisacrylamide N,N-Methylenebisacrylamide; MBAAm
- tetra Methylethylenediamine tetramethylethylenediamine
- the aqueous coating solution may further include a photoinitiator so that the monomers in the coating aqueous solution can cross-link by UV.
- the photoinitiator may be 0.01 to 0.1 parts by weight, preferably 0.01 to 0.05 parts by weight, based on 100 parts by weight of the mixture of N-isopropyl acrylamide monomer and water. If the content of the photoinitiator is less than 0.01 parts by weight, there may be a problem that cross-linking by UV is not performed. Death can be a problem.
- the photoinitiator may be used without limitation as long as it can initiate crosslinking through UV, for example, 2-hydroxy-1-1[4-(hydroxyethoxy)phenyl]-2-methyl-1 Propanone may be used.
- the step of forming the coating layer is not limited as long as the coating layer by the aqueous coating solution is formed to the extent that the fluid permeates into the porous microwell, for example, the step of forming the coating layer may include spin coating or bar coating. can form. Furthermore, since the cell culture layer formed by the coating layer is formed in the same form as a hydrogel, the solution moves smoothly, so that the fluid can flow through the porous microwell and the hydrogel.
- the step of forming a cell culture layer by irradiating UV to the coating layer is a step of polymerizing monomers, and if irradiating UV is performed so as to form a polymer of N-isopropyl acrylamide (polyisopropyl acrylamide).
- irradiating UV is performed so as to form a polymer of N-isopropyl acrylamide (polyisopropyl acrylamide).
- it may be performed by irradiating UV with 1800w for 10 minutes.
- the three-dimensional cell aggregate culture method is cultured by attaching the three-dimensional cell aggregate to the cell culture layer at a temperature of more than 32 ° C. to less than 40 ° C., and a temperature of 0 ° C. or more to less than 32 ° C. may include detaching the three-dimensional cell aggregate from the cell culture layer, wherein the cells are myoblasts, fetal fibroblasts, human umbilical vein endothelial cells, or It may be human epidermal cells, but is not limited thereto.
- Example 1 an upper chamber including a porous microwell at the bottom was prepared. Specifically, a porous microwell was prepared by drilling a hole of a certain size in poly methyl methacrylate (PMMA) and bonding polymer nanofibers with the hole-perforated PMMA together with an adhesive.
- PMMA poly methyl methacrylate
- an aqueous solution of N-isopropyl acrylamide having a high content ratio and an aqueous solution of N-isopropyl acrylamide having a low content ratio were prepared by using the phase separation phenomenon that occurs in a solution containing a high concentration of N-isopropyl acrylamide monomer. .
- cells are attached to the upper surface of the porous microwell at a temperature of more than 32°C to less than 40°C, and at 0°C to less than 32°C, the cells are A cell culture vessel in which a detachable cell culture layer was formed was prepared.
- the N-isopropyl acrylamide monomer and distilled water were mixed in a 1:1 mass ratio, and the mixture was stirred for 5 minutes so that the N-isopropyl acrylamide monomer was sufficiently dissolved in the distilled water.
- the low concentration of N-isopropyl acrylamide aqueous solution and the high concentration of N-isopropyl acrylamide aqueous solution were stably divided, and finally, when the N-isopropyl acrylamide aqueous solution was stably separated, pi
- Each solution was transferred to a vial using a pet, to obtain 5 ml of an aqueous solution of N-isopropylacrylamide having a high content ratio of N-isopropylacrylamide:water with a mass ratio of 87:13.
- N,N'-methylenebisacrylamide a crosslinking agent to make it react to UV when UV irradiation treatment
- N-isopropyl acrylamide monomer and water 100 weight 0.005 g of 2-hydroxy-1-1[4-(hydroxyethoxy)phenyl]-2-methyl-1-propanone as a photoinitiator a mixture of N-isopropylacrylamide monomer and water 0.01 parts by weight relative to 100 parts by weight
- a composition prepared by adding a crosslinking agent and a photoinitiator to an aqueous solution of N-isopropylacrylamide is applied thinly on the polymer nanofibers using a bar coating, and then irradiated with a UV light source for 10 minutes to irradiate the upper surface of the porous microwell at 32°C to 40°C
- a cell culture vessel was prepared in which a cell culture layer to which cells are attached and from which cells are detached at 0° C. or higher to less than 32° C. is formed.
- 11A and 11B show a cell culture vessel in which a cell culture layer is formed on the top surface of the prepared porous microwell, in which cells are attached at a temperature of more than 32° C. to 40° C. or less, and from which cells are detached at a temperature of 0° C. or more to less than 32° C.
- FIG. 13A shows a composition containing N-isopropyl acrylamide before coating the polymer nanofibers
- FIG. 13B shows a cell culture layer after the composition containing N-isopropyl acrylamide is coated on the polymer nanofibers.
- the cell culture layer is a combination of polymer nanofibers and hydrogel.
- the human liver cancer cell line (HepG2) was seeded in the cell culture vessel of ⁇ Example 1> at 36° C., and three-dimensional cell aggregates were cultured after 3 days.
- the upper chamber containing the three-dimensional human liver cancer cell line aggregate was moved to an environment of 20°C.
- FIG. 14A is an image of a cell culture vessel in which cells are being cultured
- FIG. 14B shows an image of the cultured cells
- 14C shows an image of a cell culture vessel in which cultured cells are detached. As shown in Figure 5C, it was confirmed that the cells cultured in the cell culture vessel of the present invention are easily detached.
- a cell culture apparatus according to an embodiment of the present invention, more precisely, a cell culture apparatus for enhancing the cell culture effect using bottom flow, and a cell culture method using the same. do it with
- This embodiment relates to a three-dimensional cell culture apparatus capable of easily removing waste products generated during cell culture and smoothly supplying nutrients to the lower part of the three-dimensional cell.
- the present invention provides an upper chamber 100 including an opening and a porous microwell; and a lower chamber 200 in which the upper chamber is disposed and a fluid can flow at the lower end of the porous microwell.
- the upper chamber 100 may refer to a shape in which a well-shaped chamber including an opening 11 and a porous microwell 21 is inserted through a plate. Furthermore, the lower end of the porous microwell 21 refers to a lower region of the porous microwell, and refers to a region within the lower chamber 200 .
- a through portion may be formed in the upper chamber 100 so that the fluid of the lower chamber 200 can contact the outside, and in this case, the through portion is formed in an adjacent portion of the porous microwell 21 of the upper chamber 100 .
- a through portion may be formed at any position of the upper chamber 100 .
- the position of the penetrating portion is not particularly limited as long as the shape of the porous membrane can be prevented from being deformed by the physical force formed by the flow of the fluid.
- the lower chamber 200 may further include a fluid inlet 310 and a fluid outlet 330 through which a fluid may flow, through which the fluid of the lower chamber 200 may flow.
- the fluid inlet 310 and the fluid outlet 330 may be additionally connected to a device capable of causing a flow, for example, the lower chamber 200 may be configured to allow the fluid to flow in the horizontal direction of the porous microwell 21 . It may be connected to a device for directing a flow of fluid that causes it to flow. In this case, a pump or the like may be used as a device for inducing the flow of the fluid, but is not limited as long as it can cause the flow of the fluid.
- the fluid in the lower chamber 200 can flow stably through a fluid flow inducing device that allows the fluid flowing through the lower chamber 200 to flow at the bottom of the porous microwell 21. and, due to the permeability of the pores of the porous microwell 21, the fluid having the flow as described above can discharge waste products formed during 3D cell culture from the upper surface of the porous membrane to the lower chamber 200 3 Nutrients can be smoothly supplied to the lower part of the dimensional cells. Furthermore, wastes may be discharged from the lower chamber 200 to the outside of the three-dimensional cell culture apparatus.
- the fluid flow inducing device may use a syringe pump, a peristaltic pump, or an agitator.
- the 3D cell culture apparatus distributes the pressure applied to the porous microwell during 3D cell culture and efficiently removes and supplies the formed wastes and nutrients, the upper chamber 100 and the lower chamber 200 ), the penetrating portion 400 may be formed so that the surface of the fluid is in contact with the outside.
- the penetrating portion 400 provides a structure in which the surface of the fluid of the lower chamber 200 can be in contact with the outside. Due to the structure as described above, pressure is applied to the upper chamber 100 when the fluid flows through the porous microwell. (21) is modified, thereby solving the problem of adversely affecting the seating, proliferation and differentiation of cells in three-dimensional cell culture.
- the present invention provides a three-dimensional cell culture method comprising the step of culturing cells by introducing a cell culture medium and cells into a porous microwell using the three-dimensional cell culture apparatus of the present invention, wherein the cells are myoblasts ( myoblasts), fetal fibroblasts, human umbilical vein endothelial cells, human liver cancer cells (HepG2 cells) or human epidermal cells, but is not limited thereto.
- myoblasts myoblasts
- fetal fibroblasts human umbilical vein endothelial cells
- HepG2 cells human liver cancer cells
- epidermal cells but is not limited thereto.
- a three-dimensional cell culture apparatus including an upper chamber 100 and a lower chamber 200 including a porous microwell having the form as shown in FIG. 15(a)
- HepG2 cells and DMEM Dulbeco's Modified
- FBS 10% Eagle's Media
- a three-dimensional HepG2 spheroid was cultured in the same manner as in ⁇ Example 2>, except that the flow at the bottom was not given in ⁇ Example 2>.
- albumin expression levels of Hep G2 spheroids were measured on the 6th and 9th days during the culture period.
- the measured albumin expression level is shown in FIG. 16(a), and as shown in FIG. 16(a), the albumin expression level of Hep G2 spheroids cultured in ⁇ Comparative Example 2> was 1182.64mg/ml on the 6th day, the 9th day
- the albumin expression amount of Hep G2 spheroids cultured in ⁇ Example 2> was 4813.99 mg/ml on the 6th day and 6644.55 mg/ml on the 9th day.
- FITC-Dextran 20kDa was added to the porous microwell of the three-dimensional cell culture apparatus of the form as shown in Fig. 15(a). 200ug/ml was added, and the concentration of FITC Dextran remaining in the porous microwell was measured after the bottom flow was performed for 3 hours.
- FITC-Dextran was added in the same manner as in ⁇ Example 3>, and the concentration of FITC-Dextran remaining in the porous microwell was measured after 3 hours.
- FIG. 17 The result of visually examining the degree of waste accumulation in ⁇ Example 3> is shown in FIG. 17, and the concentration of FITC-Dextran measured in ⁇ Example 3> and ⁇ Comparative Example 3> is shown in FIG. 16(b). indicated.
- FIG. 16(b) in the case of ⁇ Example 4> with bottom flow, the concentration of FITC-Dextran remaining in the porous microwell was 55.6199 ⁇ 3.3429 mg/ml, whereas in the case of ⁇ Comparative Example 3>, the porosity It was confirmed that the concentration of FITC-Dextran remaining in the microwell was 131.435 ⁇ 7.80245 mg/ml.
- FIG. 18(a) is a view showing that wastes existing in the porous microwell are removed through the pores when there is a bottom flow of the culture medium, that is, the wastes are removed from the inside of the microwell as they pass through the pores along the flow of the fluid will show On the other hand, FIG.
- FIGS. 19 to 29 a cell culture apparatus and a cell culture method according to another embodiment of the present invention will be described with reference to FIGS. 19 to 29 .
- the culture medium flow by pipetting It can solve the problem that the loss of cells and cell aggregates may occur.
- the present invention it is possible to minimize the loss of cells as described above during the culturing process, and at the same time, it continuously induces a uniform microenvironment around cell aggregates, which exhibits a phenomenon more similar to the in vivo phenomenon compared to the two-dimensional culture. It becomes possible to culture dimensional cell aggregates.
- the cell culture apparatus includes an upper chamber 110 including an opening, a porous membrane, and a porous microwell 21 having a cell culture space accommodating a culture solution.
- the upper chamber 110 includes a lower chamber 210 having a space disposed therein, the fluid flowing into the upper chamber 110 is a porous microwell ( 21) and is introduced into the lower chamber 210, and the fluid in the lower chamber 210 is discharged so that the fluid flows.
- the three-dimensional cell aggregate culture method the cell culture solution flows by the cell culture solution discharged from the lower chamber 210, further comprising the step of introducing the cell culture solution into the lower chamber 210; may be
- the fluid introduced into the upper chamber 110 passes through the porous microwell 21 in the upper chamber 110 and flows into the lower chamber 210 . Further, the fluid in the lower chamber 210 is discharged to allow the fluid to flow, and in this case, the fluid in the lower chamber 210 is discharged through a fluid outlet provided in the lower chamber 210 or the upper chamber 110 ) and the lower chamber 210 may be discharged through a gap region, for example, may be discharged through an upper portion of the gap region.
- the fluid outlet may be formed at any position of the lower chamber 210, for example, may be provided at the lower end of the lower chamber 210 as shown in FIG. 1(c), but is not limited thereto.
- the fluid is discharged through the gap region between the upper chamber 110 and the lower chamber 210 as shown in FIGS. 29 (a) to (c). It is possible to form a flow of fluid as possible.
- the size of each chamber can be adjusted so that a gap exists between the walls of each side of the upper chamber 110 and the lower chamber 210 in order to have a gap region between the upper chamber 110 and the lower chamber 210. And it is possible to discharge the fluid from the upper portion of the interface in contact with the air in the gap region between them.
- the three-dimensional cell culture apparatus may have a discharge structure to discharge the fluid from the lower chamber 210 , and the discharge structure includes a fluid outlet 331 in the lower chamber 210 .
- a structure for flowing a fluid through a structure, or a structure for flowing a fluid by discharging it through a gap region between the upper chamber 110 and the lower chamber 210 , that is, a gap existing between the upper chamber 110 and the lower chamber 210 . can be made with
- the porous membrane is made of a nanofiber network, and may be a porous membrane having a porosity of 20% to 60%, for example, a porous membrane having a porosity of 30% to 50%.
- the porosity is less than 20%, the permeability coefficient is lowered, and accordingly, the water pressure applied to the porous membrane increases, thereby causing a problem in that the viability of the cell aggregates being cultured on the porous membrane is reduced.
- the porous membrane may have an average pore size of 10 nm to 10 ⁇ m. That is, since the porous membrane includes the average pore size in the above range, it can act as a selective permeation membrane that selectively permeates other substances such as nutrients and growth factors in the cell culture medium without permeating single cells. This induces the aggregation of single cells on the porous membrane to enable the formation of three-dimensional aggregates, and after the formation of aggregates, it can serve as a material transfer barrier and passage.
- the porous membrane may have characteristics of high permeability within the porosity and average pore size range of the present invention.
- the porous membrane may have a hydraulic conductivity of 1 to 20 ⁇ m s ⁇ 1 .
- the permeability coefficient is less than 1 ⁇ m s -1 , high water pressure is caused in the porous membrane, and when a water pressure of 1000 Pa or more is applied to the porous membrane and the cell aggregate in culture, there may be adverse effects such as lowering the viability of cells. .
- the porous membrane is a nanofiber network for cell culture, and its manufacturing method is not particularly limited, but may be made of, for example, polymer nanofibers formed by electrospinning.
- the method for preparing the nanofiber network may include, for example, electrospinning a solution in which polycaprolactone is dissolved in a solvent of a chloroform/methanol (3/1 vol/vol) mixture to a concentration of 4 to 10 wt %. .
- the electrospinning is preferably performed at a discharge rate of a polymer solution of 0.1 to 2.0 ml hr -1 under a voltage of 10 to 30 kV, and when the voltage is less than the above range, there is a problem in uniform nanofiber production, If it exceeds, there may be a problem in the manufacture of stable nanofibers such as non-uniform stacking of nanofibers.
- the porous microwell may be a porous membrane in which all or a part of the depression formed concave in the downward direction is preferably a porous microwell, that is, when the opening of the upper chamber is disposed to face upward, the surface forming the bottom is porous formed into a membrane.
- the porous membrane constituting the lower surface of the upper chamber 110 of the present invention may be formed to have a protrusion and/or a concave portion.
- a concave portion may be formed by using a porous membrane as shown in FIG. 28, or a concave portion may be formed by additionally adding a sidewall or protrusion capable of forming a compartment corresponding to the concave portion on the porous membrane as shown in FIG.
- the material of the side wall or the protrusion is not particularly limited to that which may or may not be porous.
- the underside of the recess is a porous membrane, and the sidewall or protrusion may or may not be porous.
- FIG. 21 (a) and 21 (b) are examples showing the shape when the sidewall of the concave portion is not a porous material by laminating an additional layer in which a through hole is formed
- FIG. 21 (c) is the porous membrane itself This is a case in which the concave portion is formed in the , and the concave portion and the non-concave portion are made of a porous material as a whole.
- the porous microwell may be prepared, for example, by combining a porous membrane fabricated by electrospinning with an arrangement of through-holes as shown in FIG. 26, but is not limited thereto.
- the formation of the concave part and the protrusion part of the porous material may be performed using a compression process using a mold as shown in FIG. 28 , for example.
- the upper surface of the porous membrane of the porous microwell is a region acting as a cell culture layer.
- the porous membrane has protrusions and concave portions, cells are more easily seated in the formed concave portion, and the porous microwell By inducing aggregation of single cells in the well, three-dimensional cell aggregates can be stably formed and then cultured.
- a more preferred porous membrane of the present invention has protrusions and recesses, and all surfaces are made of the porous membrane.
- the lower chamber 210 has a space in which the upper chamber 110 is disposed, and when a fluid outlet is provided in the lower chamber 210, a fluid outlet 331 through which the fluid can be discharged as described above is provided.
- the culture solution may flow while the fluid of the lower chamber 210 containing the culture solution is discharged to the outside of the lower chamber in a state in which it is disposed therein.
- a device capable of generating a flow may be additionally connected to the upper and/or lower chamber 210 , and for example, a device for injecting a cell culture solution into the upper chamber 110 at a constant flow rate may be added.
- the lower chamber 210 allows the fluid introduced into the upper chamber 110 to pass through the porous membrane of the upper chamber 110 and flow into the lower chamber 210 and discharged at a constant flow rate. It can be connected to a device that controls the At this time, as long as it can cause the flow of the fluid, the device for inducing the flow of fluid is not limited, for example, the device for inducing the flow of fluid is a syringe pump, a peristaltic pump, or an agitator. can be used
- the three-dimensional cell culture apparatus is disposed on the same plane as the lower chamber 210, and in fluid communication with the lower chamber 210, may further include a culture solution reservoir 65, the culture solution reservoir (65) The height of the culture solution may be set to correspond to the level of the culture solution in the lower chamber (210).
- the water level of the culture medium in the lower chamber 210 may be a height of 1 to 20 mm in the upper direction based on the porous membrane at the bottom of the upper chamber 110, for example, 1 to 19 mm, preferably 1 to 18 mm, for example 1 to 8 mm. If the water level of the culture medium is less than the preferred range, it may be impossible to supply nutrients to the cell aggregates in culture, and if it exceeds the preferred range, overflow and overuse of the culture may occur.
- the distance between the porous membrane at the bottom of the upper chamber 110 and the bottom of the lower chamber 210 may be 0.1 to 8 mm, for example, 0.2 to 7 mm, preferably 1 to 5 mm. .
- the interval is less than the above preferred range, the flow of the cell culture medium is restricted, and discharge through the outlet may be impossible. In addition, when it exceeds the above preferred range, it may lead to overuse of the culture medium.
- the fluid that is, the cell culture solution may flow while maintaining a constant speed.
- the inflow and discharge of the fluid may be controlled at a constant speed.
- the fluid may flow at a rate of 0.0001 to 1 ml hr -1 , for example, 0.001 to 1 ml hr -1 , preferably at a rate of 0.01 to 1 ml hr -1 .
- the flow rate of the fluid is less than 0.0001 ml hr -1 , there may be a problem in that the required amount of cell culture solution for the cell aggregates is not supplied . Stress can act and adversely affect cell aggregates.
- a shear stress that does not adversely affect cells for example, a shear stress of 0.001 to 10 dyne cm -2 may have a positive effect on cell differentiation and proliferation.
- the cell culture medium is preferably applied to the porous membrane at a water pressure of less than 1000 Pa, more preferably as the pressure is less, for example, may be 1 Pa to 100 Pa. On the other hand, when it exceeds 1000 Pa, there is a problem that the cell viability is reduced.
- cell lines such as Myoblasts, Embryo fibroblasts, Umbilical vein endothelial cells ), liver cancer cells (HepG2 cells), epidermal cells, or a mixture of at least one or more thereof.
- cell lines such as Myoblasts, Embryo fibroblasts, Umbilical vein endothelial cells ), liver cancer cells (HepG2 cells), epidermal cells, or a mixture of at least one or more thereof.
- primary cells such as liver, pancreas, and small intestine may be used.
- stem cells for example, induced pluripotent stem cells (Induced pluripotent stem cells), mesenchymal-derived stem cells (Mesenchymal stem cells) or cells such as a mixture of at least one or more thereof may be cultured, but is limited thereto No, it is possible to culture spheroids or organoids, which are three-dimensional cell aggregates.
- induced pluripotent stem cells Induced pluripotent stem cells
- mesenchymal-derived stem cells mesenchymal stem cells
- organoids which are three-dimensional cell aggregates.
- the three-dimensional cell aggregate culture method using the three-dimensional cell culture apparatus of the present invention, the steps of inoculating the cells on the porous membrane of the upper chamber (110); and introducing the cell culture solution to the upper part of the upper chamber 110 through the inlet 311 or the opening.
- the cells may be inoculated and cultured on the porous membrane, and the inoculation may be performed by inoculating cells to be cultured on the porous membrane prior to introducing a fluid into the upper chamber 110 .
- the cells may be applied to the above three-dimensional cell culture apparatus, and the method of inoculating the cells may be performed by a method used in the art, for example, may be inoculated using a micropipette.
- Cells seeded with this method form three-dimensional cell aggregates within hours to days. After the formation of cell aggregates, the flow of the cell culture solution can be applied by the developed device.
- PCL Polycaprolactone
- Mn 80,000 g mol -1
- chloroform and methanol purchased from Sigma-Aldrich (USA).
- a PCL solution for electrospinning was prepared by dissolving PCL in a mixture of chloroform/methanol (3/1 vol/vol) at a concentration of 7.5 wt%. Put the prepared PCL solution into a 5 ml precision syringe (Gastight syringe; Hamilton) and use a commercial electrospinning machine (ES-robot, NanoNC) through a 23 gauge metal needle placed at a distance of 10 cm on an annular electrode with a diameter of 5 cm. It was discharged at a flow rate of 1ml h -1 .
- ES-robot, NanoNC commercial electrospinning machine
- Electrospinning was performed by applying a high voltage of 15 kV between the metal needle and the annular electrode using the commercial electrospinning machine. As-electrospun PCL nanofibers were deposited between annular electrodes to create gas- and mass-permeable nanofiber membranes. Electrospinning was performed at a relative humidity of 50 to 60% and a temperature of 20 to 25 °C. The photomicrograph according to the spinning time when manufacturing the nanofiber network is shown in FIG. 22, and it was confirmed that the nanofiber diameter was about 800-1000 nm, and as the spinning time increased, the average pore size and porosity (Porositiy) decreased. Conversely, the average thickness increased.
- FIG. 22(a) Structural change (Fig. 22(a)), porosity change (Fig. 22(b)) of the nanofiber network according to the spinning time during the manufacture of the nanofiber network, and the hydraulic conductivity of the porous membrane (Fig. 22(c)) , and induced pressure (FIG. 22(d)) are shown in FIG. 22, respectively.
- the calculation method of the porosity was to convert the enlarged microscope image into a binary image, and then use Image J software (NIH, USA) to calculate the area fraction of the pores generated by the nanofiber network compared to the area of the nanofiber network. calculated and shown.
- FIG. 26 A series of processes were performed to prepare an upper chamber including the porous membrane obtained in 1. above and a porous microwell having a cell culture space for accommodating the culture solution, and this is shown in FIG. 26 .
- the porous membrane area at the bottom of the upper chamber is coated with an adhesive on a 500 ⁇ m thick polymethyl methacrylate plate (PMMA, Acryl Choika, South Korea) and then a laser cutter (ML-7050A, Machineshop, South Korea) is used.
- An array of through-holes was drilled in the PMMA plate coated with an adhesive, and the through-hole and the porous membrane were combined using the applied adhesive to finally form a concave part with a porous membrane as shown in FIG. 21 .
- FIG. 28 A series of processes for fabricating the porous membrane area at the bottom of the upper chamber of another type is shown in FIG. 28 . More specifically, the flat porous membrane obtained in step 1. was subjected to a compression process using a protruding mold and a concave mold to complete the lower end of the upper chamber having a porous membrane with protrusions and concavities formed on all surfaces of the porous membrane. .
- the concave mold was manufactured by drilling on a 10 mm thick polymethyl methacrylate plate (PMMA, Acryl Choika, South Korea) using a machining facility (EGX-350, Roland, USA), and polydimethylsiloxane (Polydimethylsiloxane) was used. ; PDMS), a mixture of PDMS and curing agent (Sylgard 184, Dow Corning, USA) in a weight ratio of 10:1 was poured into a depression mold and cured at 55° C. for 12 hours to complete.
- PMMA polymethyl meth
- the remaining side parts having an opening shape were manufactured using an injection molding machine (SE50D, Sumitomo, Japan).
- SE50D injection molding machine
- the side portion thus obtained and the lower end of the upper chamber obtained above were combined using an adhesive to complete the upper chamber including the porous microwell.
- a lower chamber composed of polydimethylsiloxane (PDMS) and its cover a mixture of PDMS and curing agent (Sylgard 184, Dow Corning, USA) in a weight ratio of 10:1 was poured into a mold and cured at 55°C for 12 hours. did.
- the mold of the lower chamber and cover was manufactured using a 20 mm thick PMMA plate using machining equipment (EGX-350, Roland, USA).
- the lower chamber was manufactured to have a size of 30 mm ⁇ 30 mm ⁇ 30 mm, and at this time, a 2 mm deep groove was designed on the upper surface (Fig. 27(a)) of the porous microwell manufactured in 2.
- the distance interval to the porous membrane was set to 8 mm (Fig. 27(b)).
- a biopsy punch (Miltex, USA) was used to form a hole in the bottom of the lower chamber and the center of the cover by drilling a hole in the size of 1 mm.
- a tube (Biokonvision, South Korea) was connected through the perforation of the opening cover, and a syringe pump (KDS200, KD Scientific, USA) was injected with the cell culture medium at a flow rate of 0.062 ml h -1 through the tube.
- the perforation on the bottom surface of the lower chamber was also connected to the tube so that the cell culture solution could be transferred to the culture solution reservoir.
- the height of the reservoir is set to correspond to the level of the culture solution in the lower chamber, and the culture solution is continuously introduced from the syringe pump during the culture process. It was designed to maintain a constant level of the chamber culture medium.
- a three-dimensional cell culture apparatus including an upper chamber and a lower chamber including the porous microwell prepared in 1 above and a culture medium reservoir capable of storing the discharged culture medium was prepared as shown in FIG. 19 .
- the height of the culture medium reservoir was set to correspond to the water level of the lower chamber by 12 mm from the bottom of the lower chamber.
- HepG2 liver cells
- DMEM Dulbeco's Modified Eagle's Media, FBS 10%
- Cell culture medium replacement using pipetting was performed without using an impermeable microwell composed of the bottom surface of an impermeable PMMA plate rather than a porous membrane and a device that applies the flow of the cell culture medium, such as a syringe pump or a culture medium reservoir.
- HepG2 spheroids were cultured in the same manner as in Example 4, except that.
- the flow velocity in the three-dimensional cell culture apparatus of Example 4 through COMSOL Multiphysics software (Version 5.0, USA) ( Surface velocity: 0 ms -1 ⁇ 8.11 e -6 ms -1 ), flow direction (black cone shape), and streamline (white line) were analyzed and calculated.
- Example 4 the degree of loss of liver cell spheroids was compared at 2-day intervals, and the results are shown in FIG. 23 .
- Example 23 there was no loss of liver cell spheroids in Example 4, but in Comparative Example 4, spheroids were continuously lost, and on the 8th day, about 15% of HepG2 cell spheroids were lost. could be seen to occur.
- Example 4 In Example 4 and Comparative Example 4, COMSOL Multiphysics software (Version 5.0, USA) was used to measure and analyze the concentration of nutrients (glucose) around the HepG2 spheroids over time. The numerical values used in this process are shown in Table 1 below.
- K is the permeability coefficient of the porous membrane
- L is the thickness of the porous membrane
- t is the time from h i to h f
- hi and h f of 100 mm and 10 mm were utilized in this experiment, respectively.
- the permeability of the porous membrane was calculated using the following formula.
- k is the current permeability of the porous membrane
- ⁇ is the viscosity of the cell culture
- ⁇ is the density of the cell culture
- g is the acceleration of gravity
- the water pressure applied to the porous membrane was calculated using the following equation (Kozeny-Carman equation) based on the cell culture medium that permeates the porous membrane at a flow rate of 0.062 ml hr -1 , the measured permeability coefficient, and the calculated permeability.
- the current flow rate k of the fluid passing through the porous membrane is the current permeability of the porous membrane
- ⁇ is the viscosity of the cell culture medium
- L is the thickness of the porous membrane
- p is the water pressure applied to the porous membrane.
- the hydraulic pressure applied to the porous membrane is lower as the network of nanofibers constituting the porous membrane is coarse, that is, the electrospinning time is short, that is, the porosity and permeability coefficient are high. Confirmed. When this was compared with a commercial porous membrane, not the porous membrane of the present invention, it was confirmed that a much lower hydraulic repulsion force was applied to the porous membrane of the present invention, and the porous membrane composed of a nanofiber network is more suitable for the device of the present invention was able to confirm
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Biomedical Technology (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Sustainable Development (AREA)
- Immunology (AREA)
- Clinical Laboratory Science (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Oncology (AREA)
- Cell Biology (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
Description
분자 (Molecules) |
MW [kDA] |
확산 계수 [μm2s-1] |
배양액 내 초기 농도 [mol m-3] |
소비율 [mol m-3s-1] |
글루코스 | 0.18 | 580 | 11.1 | 5.2E-3 |
Claims (6)
- 개구부, 다공성 멤브레인 및 배양액을 수용하는 세포 배양 공간을 구비하는 다공성 마이크로웰을 포함하는 상부챔버; 및상기 상부챔버가 내부에 배치되는 공간을 구비하는 하부챔버를 포함하며,상기 상부챔버의 상부로 유입된 유체는 상기 상부챔버에서 다공성 마이크로웰을 투과해 상기 하부챔버로 유입되고,하부챔버의 유체는 배출되어 유체가 유동되는,3차원 세포 배양 장치.
- 제1항에 있어서,상기 하부챔버의 유체는, 하부챔버에 구비된 유체 배출구를 통해 배출되거나 또는 상부챔버와 하부챔버의 사이의 간극 영역을 통해 배출되는,3차원 세포 배양 장치.
- 제2항에 있어서,상기 하부챔버와 동일한 평면 상에 배치되며, 하부챔버의 배출구와 유체 연통된, 배양액 저장소를 추가로 포함하며, 상기 배양액 저장소 내 배양액의 수위는 하부챔버 내 배양액의 수위에 상응하도록 설정되는,3차원 세포 배양 장치.
- 제1항 내지 제3항 중 어느 한 항의 3차원 세포 배양 장치를 이용하여,상부챔버의 다공성 멤브레인 상에 세포를 접종하는 단계;세포 배양액을 상부챔버의 상부로 개구부를 통해 투입하는 단계; 및상부챔버에서 다공성 마이크로웰을 투과해 하부챔버로 유입된 세포 배양액을 하부챔버로부터 배출하는 단계를 포함하는,3차원 세포 응집체 배양 방법.
- 제4항에 있어서,상기 세포는 유도만능 줄기세포(Induced pluripotent stem cell) 및 중간엽유래 줄기세포(Mesenchymal stem cell)를 포함하는 줄기세포; 근아세포(Myoblasts), 태아 섬유아세포(Embryo fibroblasts), 제정맥 내피세포(Umbilical vein endothelial cells), 간암 세포(HepG2 세포), 및 표피 세포(Epidermal cells)를 포함하는 세포주; 및 간, 췌장 또는 소장으로부터 획득된 1차 세포로 이루어진 그룹으로부터 선택되는 적어도 하나 이상인,3차원 세포 응집체 배양 방법.
- 제4항에 있어서,상기 세포 배양액을 하부챔버로 투입하는 단계를 추가로 포함하는,3차원 세포 응집체 배양 방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22796142.2A EP4328298A1 (en) | 2021-04-27 | 2022-04-27 | Cell culture device for culturing 3d cell aggregation and cell culture method using same |
JP2023566416A JP2024516408A (ja) | 2021-04-27 | 2022-04-27 | 3次元細胞凝集体を培養するための細胞培養装置及びこれを用いた細胞培養方法 |
US18/496,292 US20240101942A1 (en) | 2021-04-27 | 2023-10-27 | Cell culture device for culturing 3d cell aggregation and cell culture method using same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20210054529 | 2021-04-27 | ||
KR10-2021-0054529 | 2021-04-27 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/496,292 Continuation US20240101942A1 (en) | 2021-04-27 | 2023-10-27 | Cell culture device for culturing 3d cell aggregation and cell culture method using same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022231310A1 true WO2022231310A1 (ko) | 2022-11-03 |
Family
ID=83847077
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2021/010026 WO2022231068A1 (ko) | 2021-04-27 | 2021-08-02 | 3차원 세포 응집체 배양 장치 및 이를 이용한 3차원 세포 응집체 배양 방법 |
PCT/KR2022/006037 WO2022231310A1 (ko) | 2021-04-27 | 2022-04-27 | 3차원 세포 응집체를 배양하기 위한 세포 배양 장치 및 이를 이용한 세포 배양 방법 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2021/010026 WO2022231068A1 (ko) | 2021-04-27 | 2021-08-02 | 3차원 세포 응집체 배양 장치 및 이를 이용한 3차원 세포 응집체 배양 방법 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240101942A1 (ko) |
EP (1) | EP4328298A1 (ko) |
JP (1) | JP2024516408A (ko) |
KR (1) | KR20220147522A (ko) |
WO (2) | WO2022231068A1 (ko) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180091763A (ko) * | 2017-02-06 | 2018-08-16 | 포항공과대학교 산학협력단 | 세포 배양 인서트와 세포 배양 용기 및 그 제조 방법 |
KR20190115604A (ko) * | 2018-04-03 | 2019-10-14 | 한국생산기술연구원 | 다공성 필름과 미세인공혈관 채널이 구비된 세포배양 플레이트, 이를 포함하는 세포배양 장치 및 세포배양 장치를 이용한 세포배양방법 |
KR20190121544A (ko) * | 2018-04-18 | 2019-10-28 | 주식회사 포스코 | 세포 배양 구조체, 이의 제조방법 및 세포 배양 구조체를 포함하는 세포 배양 장치 |
KR20200071966A (ko) * | 2018-12-12 | 2020-06-22 | 주식회사 티앤알바이오팹 | 이중 구조를 갖는 기능성 세포배양체 |
KR20200081853A (ko) * | 2018-12-28 | 2020-07-08 | 포항공과대학교 산학협력단 | 다공성 마이크로웰 및 이를 구비한 멤브레인과 그 제조 방법 |
KR20210098266A (ko) * | 2020-01-31 | 2021-08-10 | 포항공과대학교 산학협력단 | 하단유동을 포함하는 3차원 세포의 배양 장치 및 이를 이용한 3차원 세포의 배양 방법 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4601746B2 (ja) * | 1999-10-25 | 2010-12-22 | エイブル株式会社 | 三次元動物細胞培養装置及び培養方法 |
KR101131303B1 (ko) * | 2009-06-08 | 2012-03-30 | 한국과학기술원 | 세포 배양 장치 및 시스템과 이를 이용한 세포 배양 방법 |
KR101075032B1 (ko) * | 2010-02-26 | 2011-10-21 | 한국과학기술원 | 세포 배양기 및 이를 포함하는 세포 배양장치 |
KR101403536B1 (ko) * | 2011-12-23 | 2014-06-03 | 주식회사 넥스비보 | 세포 배양기, 이를 갖는 세포 배양 시스템 및 이를 이용한 세포 배양 방법 |
JP6326827B2 (ja) * | 2014-01-22 | 2018-05-23 | 株式会社Ihi | 細胞培養装置および細胞培養方法 |
-
2021
- 2021-08-02 WO PCT/KR2021/010026 patent/WO2022231068A1/ko active Application Filing
-
2022
- 2022-04-25 KR KR1020220050737A patent/KR20220147522A/ko not_active Application Discontinuation
- 2022-04-27 JP JP2023566416A patent/JP2024516408A/ja active Pending
- 2022-04-27 EP EP22796142.2A patent/EP4328298A1/en active Pending
- 2022-04-27 WO PCT/KR2022/006037 patent/WO2022231310A1/ko active Application Filing
-
2023
- 2023-10-27 US US18/496,292 patent/US20240101942A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180091763A (ko) * | 2017-02-06 | 2018-08-16 | 포항공과대학교 산학협력단 | 세포 배양 인서트와 세포 배양 용기 및 그 제조 방법 |
KR20190115604A (ko) * | 2018-04-03 | 2019-10-14 | 한국생산기술연구원 | 다공성 필름과 미세인공혈관 채널이 구비된 세포배양 플레이트, 이를 포함하는 세포배양 장치 및 세포배양 장치를 이용한 세포배양방법 |
KR20190121544A (ko) * | 2018-04-18 | 2019-10-28 | 주식회사 포스코 | 세포 배양 구조체, 이의 제조방법 및 세포 배양 구조체를 포함하는 세포 배양 장치 |
KR20200071966A (ko) * | 2018-12-12 | 2020-06-22 | 주식회사 티앤알바이오팹 | 이중 구조를 갖는 기능성 세포배양체 |
KR20200081853A (ko) * | 2018-12-28 | 2020-07-08 | 포항공과대학교 산학협력단 | 다공성 마이크로웰 및 이를 구비한 멤브레인과 그 제조 방법 |
KR20210098266A (ko) * | 2020-01-31 | 2021-08-10 | 포항공과대학교 산학협력단 | 하단유동을 포함하는 3차원 세포의 배양 장치 및 이를 이용한 3차원 세포의 배양 방법 |
Also Published As
Publication number | Publication date |
---|---|
EP4328298A1 (en) | 2024-02-28 |
KR20220147522A (ko) | 2022-11-03 |
JP2024516408A (ja) | 2024-04-15 |
WO2022231068A1 (ko) | 2022-11-03 |
US20240101942A1 (en) | 2024-03-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Kajtez et al. | 3D‐Printed soft lithography for complex compartmentalized microfluidic neural devices | |
WO2018088856A2 (ko) | 마이크로유체칩, 삼차원 채널 구조물, 이를 이용한 세포 배양 방법 및 이를 이용한 생리활성 물질의 활성평가 방법 | |
Lv et al. | Micro/nanofabrication of brittle hydrogels using 3D printed soft ultrafine fiber molds for damage-free demolding | |
WO2021101313A1 (ko) | 심근주막 수준 생체모방 심장칩 및 이의 용도 | |
WO2016143956A1 (ko) | 하이드로젤 기반의 세포 공동-배양용 미세유체칩 | |
Cho et al. | Development of a novel hanging drop platform for engineering controllable 3D microenvironments | |
WO2020204230A1 (ko) | 나노섬유 및 하이드로젤의 복합체 및 이를 포함하는 조직 재생용 스캐폴드 | |
Gallego-Perez et al. | High throughput assembly of spatially controlled 3D cell clusters on a micro/nanoplatform | |
WO2022231310A1 (ko) | 3차원 세포 응집체를 배양하기 위한 세포 배양 장치 및 이를 이용한 세포 배양 방법 | |
WO2020022870A1 (ko) | 말뼈 나노세라믹 및 pcl을 포함하는 치주조직 재생용 지지체 및 이의 제조방법 | |
WO2021034107A1 (ko) | 약물의 심장 효능 및 독성 시험을 위한 심근내막 수준 생체모방 심장칩 | |
WO2013154381A1 (ko) | 근적외선에 의한 세포의 선택적 탈착, 패턴 및 수확 방법 | |
WO2021132809A1 (ko) | 균일한 크기의 스페로이드의 제작 방법 | |
WO2020138581A1 (ko) | 다공성 마이크로웰 및 이를 구비한 멤브레인과 그 제조 방법 | |
WO2017005927A1 (en) | Cell culture device | |
KR20170122231A (ko) | 의료 기구, 불소 함유 환상 올레핀 폴리머, 불소 함유 환상 올레핀 폴리머 조성물, 및 세포 배양 방법 | |
EP3922431A1 (en) | Method of manufacturing microdevices for lab-on-chip applications | |
WO2021040169A1 (ko) | 메타크릴화된 저분자 콜라겐을 포함하는 바이오 잉크 조성물 및 이를 이용한 조직 유사 구조체의 제조방법 | |
WO2016052769A1 (ko) | 마이크로 반구체 어레이 플레이트의 제조방법, 마이크로 반구체 어레이 플레이트를 포함하는 미세유체소자 및 이를 이용한 세포 집합체의 배양방법 | |
Zhang et al. | Recent progresses in novel in vitro models of primary neurons: A biomaterial perspective | |
WO2022255841A1 (ko) | 줄기세포 유래 스페로이드형 초자연골세포 분화방법 및 이의 용도 | |
JP2016170090A (ja) | 生体観察用プレートおよびその製造方法 | |
Wang et al. | Fabrication of spaced monolayers of electrospun nanofibers for three-dimensional cell infiltration and proliferation | |
WO2016108529A1 (en) | Modified cell prepared by putting material into the cell without using delivery vehicle | |
US20130280747A1 (en) | Cell culture apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22796142 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023566416 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022796142 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022796142 Country of ref document: EP Effective date: 20231124 |