WO2023054902A1 - 마이크로 캐리어, 세포 복합체 및 이를 포함하는 의료용 조성물, 미용 조성물, 의료 용품 및 미용 용품 - Google Patents
마이크로 캐리어, 세포 복합체 및 이를 포함하는 의료용 조성물, 미용 조성물, 의료 용품 및 미용 용품 Download PDFInfo
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- WO2023054902A1 WO2023054902A1 PCT/KR2022/012636 KR2022012636W WO2023054902A1 WO 2023054902 A1 WO2023054902 A1 WO 2023054902A1 KR 2022012636 W KR2022012636 W KR 2022012636W WO 2023054902 A1 WO2023054902 A1 WO 2023054902A1
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Images
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Definitions
- the present invention can implement excellent mechanical strength and stability, can be directly injected into the body after 3-dimensional culture without a cell detachment process, and provides a stable environment for adherent cells, thereby increasing cell viability and contributing to a high transplantation rate in the body. It relates to a microcarrier, and a cell composite including the same, a medical composition, a cosmetic composition, a medical product, and a cosmetic product.
- Adherent cells are cultured using microcarriers in a 3D bioreactor.
- Cells, culture medium, and microcarriers are placed in a bioreactor, and the culture medium is agitated to contact the cells and microcarriers, thereby attaching the cells to the surface of the microcarriers and culturing them.
- the microcarrier used at this time provides a high surface area ratio (surface area/volume) on which cells can attach and proliferate, it is suitable for mass culture of cells.
- a process of recovering the cells through a cell detachment process is necessarily accompanied after the culture is terminated.
- the cell detachment process induces cell detachment by using a proteolytic enzyme or by changing the temperature. When such a detachment process is added, the manufacturing cost increases, resulting in poor economic feasibility and cell damage. .
- a polymer suitable for application to the living body must be used for the microcarrier, and the stratum corneum of the skin It must have sufficient strength so that the deformation of the particles does not occur in the process of passing through the layer).
- the microcarrier stably penetrating the transdermally can deliver the loaded drug locally or systemic and act on the necessary lesion.
- Hyaluronic acid which is mainly used as a biocompatible material, is a biopolymer material composed of N-acetyl-D-glucosamine and D-glucuronic acid, and the repeating units are linearly connected. It is abundant in the vitreous humor of the eyeball, synovial fluid of the joint, and chicken comb. Hyaluronic acid is commonly used as a bioinjectable material due to its excellent biocompatibility and viscoelasticity, but its use is limited by itself because it is easily decomposed in vivo or under conditions such as acids and alkalis. In addition, when applied to a microcarrier, hyaluronic acid exhibits a negative charge in the biological pH range, and as a result, there is a problem in that cell adhesion is significantly lowered.
- gelatin is a polymer hydrolyzed from collagen, a biological connective tissue, and is used as a scaffold for cell culture.
- Cells can be collected or cultured, but the strength is weak and sensitive to temperature, so there is an effort to improve the strength by introducing a functional group using a chemical method.
- microcarriers or polymeric microparticles that are suitable for living organisms and have excellent physical properties such as physical strength, stability against heat and enzymes, and excellent stability.
- microcarrier that can be directly injected into the body after 3D culture without a cell detachment process, and can contribute to a high transplantation rate in the body while increasing cell survival rate by providing a stable environment for adherent cells.
- the present invention can implement excellent mechanical strength and stability, can be directly injected into the body after 3-dimensional culture without a cell detachment process, and provides a stable environment for adherent cells, thereby increasing cell viability and contributing to a high transplantation rate in the body. This is to provide a microcarrier.
- the present invention is to provide a cell complex comprising the microcarrier.
- the present invention is to provide a medical composition comprising the above microcarrier or cell complex.
- the present invention is to provide a cosmetic composition comprising the above microcarrier or cell complex.
- the present invention is to provide a medical product comprising the above medical composition.
- the present invention is to provide a cosmetic product comprising the above cosmetic composition.
- a core including a first biocompatible polymer, a metal ion, and an organic crosslinking agent including one or more reactive functional groups; And a shell surrounding all or part of the core and including a second biocompatible polymer, a metal ion, and an organic crosslinking agent containing at least one reactive functional group; polymeric microparticles having a core-shell structure, and A microcarrier including a cell adhesion inducing layer formed on the surface of the polymeric microparticles is provided.
- the micro carrier And cells attached to the surface of the microcarrier; containing, a cell complex is provided.
- a medical composition comprising the above microcarrier or cell complex is also provided.
- a cosmetic composition comprising the above microcarrier or cell complex is also provided.
- a medical product containing the above medical composition is also provided.
- a cosmetic product containing the above cosmetic composition is also provided.
- microcarrier according to a specific embodiment of the present invention, and a cell composite including the microcarrier, a medical composition, a cosmetic composition, a medical product, and a cosmetic product will be described in more detail.
- first element may also be termed a second element, and similarly, a second element may be termed a first element.
- a (co)polymer refers to a polymer or a copolymer, and the polymer refers to a homopolymer composed of a single repeating unit, and the copolymer refers to a multipolymer containing two or more types of repeating units.
- microparticles mean that the cross section of the particle is circular or elliptical, and the ratio (sphericity) of the short axis/major axis of the particle is in the range of 0.7 to 1.0.
- the lengths of the short axis and the major axis of the particle can be derived by taking an optical picture of the particle and calculating an average value of 30 to 100 arbitrary particles in the optical picture.
- the diameter (Dn) means the diameter at the n volume% point of the cumulative distribution of the number of particles according to the diameter. That is, D50 is the diameter at the 50% point of the particle number cumulative distribution when the particle diameters are accumulated in ascending order, D90 is the diameter at the 90% point of the particle number cumulative distribution according to the diameter, and D10 is the diameter at the 90% point of the particle number cumulative distribution according to the diameter. It is the diameter at the 10% point of the particle number cumulative distribution.
- the Dn can be measured using a laser diffraction method. Specifically, after dispersing the powder to be measured in a dispersion medium, it is introduced into a commercially available laser diffraction particle size measuring device (Horiba LA-960) to measure the difference in diffraction pattern according to the particle size when the particles pass through the laser beam to determine the particle size distribution.
- yield D10, D50 and D90 can be measured by calculating the particle diameters at the points that become 10%, 50% and 90% of the particle number cumulative distribution according to the diameter in the measuring device. More specifically, in the present specification, the diameter may mean D50.
- an emulsion means a mixed phase in which at least one of oil phase or aqueous phase immiscible liquids is dispersed in another liquid (dispersion medium) in a fine particle state (dispersion medium).
- Emulsions can be generally divided into macroemulsions, microemulsions, and nanoemulsions according to the particle size of the dispersed phase.
- a core comprising a first biocompatible polymer, a metal ion, and an organic crosslinking agent including at least one reactive functional group; And a shell surrounding all or part of the core and including a second biocompatible polymer, a metal ion, and an organic crosslinking agent containing at least one reactive functional group; polymeric microparticles having a core-shell structure, and A microcarrier including a cell adhesion inducing layer formed on the surface of the polymeric microparticles may be provided.
- the present inventors conducted research on polymeric microparticles, and, as described above, after crosslinking with metal ions, process efficiency was maximized as additional crosslinking reactions proceeded, and at the same time, mechanical strength and cell adhesion of microparticles were improved. This remarkable improvement was confirmed through experiments and the invention was completed.
- the microcarrier of one embodiment includes a cell adhesion inducing layer formed on the surface of the polymeric microparticles, it is possible to directly inject into the body after 3-dimensional culture without a cell detachment process, and the microcarrier stably adheres to the cells. By forming a complex in an attached state, it was confirmed through experiments that a high cell survival rate and a high transplantation rate can be implemented, and the invention was completed.
- the core includes a polymer matrix in which the first biocompatible polymer is crosslinked with a metal ion and an organic crosslinking agent containing at least one reactive functional group
- the shell includes a second biocompatible polymer with a metal ion. It may include a polymer matrix crosslinked by an organic crosslinking agent containing one or more ionic and reactive functional groups.
- the polymer matrix includes a first cross-linked region in which a biocompatible polymer is cross-linked through metal ions; and a second cross-linking region in which the biocompatible polymer is cross-linked with an organic cross-linking agent containing at least one reactive functional group.
- the first crosslinking region refers to a crosslinking region formed by a crosslinking reaction between a biocompatible polymer and metal ions
- the second crosslinking region contains one or more reactive functional groups instead of a crosslinking reaction between a biocompatible polymer and metal ions. It may refer to a crosslinking region formed through a crosslinking reaction with an organic crosslinking agent and a crosslinking region formed through an additional crosslinking reaction of an organic crosslinking agent containing at least one reactive functional group with the first crosslinking region. That is, the polymeric microparticles of the above embodiment may be prepared through a crosslinking reaction using a metal ion and an organic crosslinking agent containing at least one reactive functional group.
- the biocompatible polymer refers to a polymer that can be directly injected into the human body in order to deliver active substances applied to the human body.
- the biocompatible polymer is hyaluronic acid (HA), carboxymethyl cellulose (CMC), alginic acid, pectin, carrageenan, chondroitin (sulfate), dextran (sulfate), chitosan, polylysine, collagen, gelatin, carboxymethyl chitin, fibrin, agarose, pullulan, polylactide, polyglycolide (PGA), polylactide-glycolide copolymer (PLGA), poly polyanhydride, polyorthoester, polyetherester, polycaprolactone, polyesteramide, poly(butyric acid), poly(valeric acid), Polyurethane, polyacrylate, ethylene-vinyl acetate polymer, acrylic substituted cellulose acetate, non-degradable polyurethane, polystyrene, polyvin
- the biocompatible polymer may be a mixture of hyaluronic acid (HA) and gelatin.
- Polymer microparticles prepared using only hyaluronic acid are easily degraded in vivo or under conditions such as acids and alkalis, and their use is limited, and their cell adhesion is significantly reduced. Polymer microparticles have significantly reduced mechanical properties.
- HA hyaluronic acid
- gelatin a biocompatible polymer
- the first biocompatible polymer may include hyaluronic acid
- the second biocompatible polymer may include gelatin.
- hyaluronic acid may mean including both hyaluronic acid itself and hyaluronic acid salts.
- the hyaluronic acid aqueous solution may be a concept including all of a hyaluronic acid aqueous solution, a hyaluronic acid salt aqueous solution, and a mixed aqueous solution of hyaluronic acid and a hyaluronic acid salt.
- the hyaluronic acid salt may be an inorganic salt such as sodium hyaluronate, potassium hyaluronate, calcium hyaluronate, magnesium hyaluronate, zinc hyaluronate, or cobalt hyaluronate, an organic salt such as tetrabutylammonium hyaluronate, or a mixture thereof.
- the molecular weight of hyaluronic acid is not particularly limited, but is preferably 10,000 g/mol or more and 5,000,000 g/mol or less in order to realize various physical properties and biocompatibility.
- gelatin may refer to a protein obtained by treating animal-derived collagen with acid or alkali and subsequently extracting it.
- the molecular weight of gelatin is not particularly limited, but is preferably 10,000 g/mol or more and 5,000,000 g/mol or less in order to realize various physical properties and biocompatibility.
- the polymeric microparticles may have a core-shell structure.
- the core-shell structure is realized by the difference in reactivity between the biocompatible polymer and the organic crosslinking agent containing one or more metal ions and reactive functional groups, as the polymer matrix included in the polymer microparticles includes two or more biocompatible polymers. It can be.
- the core contains more than 50% by volume of a polymer matrix in which hyaluronic acid is crosslinked through an organic crosslinking agent containing at least one metal ion and a reactive functional group, based on the total volume of the polymer matrix included in the core. 60 vol% or more, 70 vol% or more, or 75 vol% or more. In addition, it may contain 100 vol% or less, 100 vol% or less, 95 vol% or less, or 90 vol% or less.
- the core may contain an excess of hyaluronic acid relative to gelatin.
- the hyaluronic acid containing a polymer matrix crosslinked through an organic crosslinking agent containing one or more metal ions and one or more reactive functional groups in an amount of more than 50% by volume means that the area is equal to the total area of the core. Distribution exceeding 50% can be confirmed by visual or measuring equipment.
- the calculation of the volume ratio of the polymer matrix in which hyaluronic acid is crosslinked with the organic crosslinker containing one or more metal ions and one or more reactive functional groups with respect to the total volume of the polymer matrix included in the core is not greatly limited, and the normal measurement method can be calculated.
- the characteristic peak (1650 cm -1 ) of gelatin of the prepared polymeric microparticles It can be confirmed by taking an IR picture for the hyaluronic acid characteristic peak (1080 cm ⁇ 1 ) relative to each other.
- the shell contains more than 50% by volume of the polymer matrix in which gelatin is crosslinked via an organic crosslinking agent containing one or more metal ions and one or more reactive functional groups, based on the total volume of the polymer matrix included in the shell. It may contain more than 70% by volume, more than 70% by volume, or more than 75% by volume. In addition, it may contain 100 vol% or less, 100 vol% or less, 95 vol% or less, or 90 vol% or less.
- the shell may contain an excess of gelatin relative to hyaluronic acid.
- gelatin containing more than 50% by volume of the polymer matrix crosslinked through an organic crosslinking agent containing one or more metal ions and one reactive functional group means that the area is less than 50% of the total area The distribution exceeding % can be confirmed by checking visually or through measuring equipment.
- Calculation of the volume ratio of the polymer matrix in which gelatin is cross-linked through an organic cross-linking agent containing one or more metal ions and one or more reactive functional groups to the total volume of the polymer matrix included in the shell is not particularly limited and can be calculated by a conventional measurement method.
- Hyaluronic acid is mediated by an organic cross-linking agent containing a metal ion and one or more reactive functional groups, and a core containing a polymer matrix at least 50% by volume
- gelatin is mediated by an organic cross-linking agent containing a metal ion and one or more reactive functional groups.
- a core-shell structure including a shell containing 50 vol% or more of a crosslinked polymer matrix may be implemented according to physical and chemical factors such as solubility, temperature reactivity, and ionic bonding. More specifically, in the process of manufacturing polymeric microparticles, gelatin, which has low solubility in polar solvents such as ethanol and high temperature responsiveness, has low fluidity and is fixed on the particle surface to form a shell. More hyaluronic acid can be distributed inside the particle to form a core.
- a mixture containing a biocompatible polymer and metal ions is reacted to crosslink the polymer.
- the core-shell structure can be further clarified due to the ionic bond between the metal ion and the carboxyl group included in the hyaluronic acid.
- the polymer microparticles may have an average diameter of 1 ⁇ m or more, 1 ⁇ m or more and 450 ⁇ m or less, 100 ⁇ m or more and 450 ⁇ m or less, or 200 ⁇ m or more and 400 ⁇ m or less, or 300 ⁇ m or more and 400 ⁇ m or less in distilled water.
- the average diameter of the microparticles satisfies the above range, cell attachment and culture performance are excellent.
- the average diameter may refer to a diameter at a point of 50% by volume of the cumulative distribution of the number of particles according to the diameter.
- the thickness of the shell is 95% or less, 90% or less, 80% or less, 75% or less, 50% or less of the longest diameter of the polymeric microparticles based on the cross section having the longest diameter of the polymeric microparticles. or less, 30% or less, 25% or less, or 20% or less. Also, based on the cross section having the longest diameter of the polymeric microparticles, the thickness of the shell may be 0.01% or more, 1% or more, or 5% or more of the longest diameter of the polymeric microparticles.
- the thickness of the core is 5% or more, 10% or more, 20% or more, 25% or more of the longest diameter of the polymeric microparticles, It may be 50% or more, 70% or more, 75% or more, or 80% or more. Further, based on the cross section having the longest diameter of the polymeric microparticles, the thickness of the core may be 99.99% or less, 99% or less, or 95% or less of the longest diameter of the polymeric microparticles.
- the polymeric microparticles may have a sphericity of 0.9 or more and 1.0 or less, 0.93 or more and 1.0 or less, 0.94 or more and 0.99 or less, or 0.94 or more and 0.98 or less.
- the degree of sphericity can be obtained by taking an optical photograph of the polymer microparticles and calculating an average value of 30 to 100 arbitrary particles in the optical photograph.
- the polymeric microparticles have an average compressive strength of 0.1 mN or more, 0.1 mN or more and 100 mN or less, 0.3 mN or more and 100 mN or less, 0.35 mN or more and 100 mN or less, 0.35 mN or more and 30 mN or less, 0.35 mN or more and 10 mN or less, or 0.35 mN or more and 3 mN or less.
- the average compressive strength may be a value obtained by dividing the compressive strength when the n polymeric microparticles are deformed by 25% of their average diameter by n.
- the average compressive strength may be a value obtained by dividing the compressive strength of 30 polymeric microparticles by 30 when they are deformed at a level of 25% of the average diameter.
- an example of a method for preparing polymeric microparticles included in the microcarrier of the embodiment is not particularly limited, but includes, for example, reacting a mixture including a biocompatible polymer and metal ions to form crosslinked polymeric particles; and further cross-linking the polymeric cross-linked particles in a polar solvent containing an organic cross-linking agent containing at least one reactive functional group.
- the inventors of the present invention as in the method for producing the polymeric microparticles, maximized process efficiency by proceeding with an additional crosslinking reaction using an organic crosslinking agent containing at least one reactive functional group after crosslinking by metal ions, and at the same time, micro It was confirmed through experiments that the mechanical strength and stability of the particles were remarkably improved, and the invention was completed.
- the biocompatible polymer refers to a polymer that can be directly injected into the human body in order to deliver active substances applied to the human body.
- the biocompatible polymer is hyaluronic acid (HA), carboxymethyl cellulose (CMC), alginic acid, pectin, carrageenan, chondroitin (sulfate), dextran (sulfate), chitosan, polylysine, collagen, gelatin, carboxymethyl chitin, fibrin, agarose, pullulan, polylactide, polyglycolide (PGA), polylactide-glycolide copolymer (PLGA), poly polyanhydride, polyorthoester, polyetherester, polycaprolactone, polyesteramide, poly(butyric acid), poly(valeric acid), Polyurethane, polyacrylate, ethylene-vinyl acetate polymer, acrylic substituted cellulose acetate, non-degradable polyurethane, polystyrene, polyvin
- the biocompatible polymer may be a mixture of hyaluronic acid (HA) and gelatin.
- Polymer microparticles prepared using only hyaluronic acid are easily degraded in vivo or under conditions such as acids and alkalis, and their use is limited, and their cell adhesion is significantly reduced. Polymer microparticles have significantly reduced mechanical properties.
- HA hyaluronic acid
- gelatin a biocompatible polymer
- hyaluronic acid may mean including both hyaluronic acid itself and hyaluronic acid salts.
- the hyaluronic acid aqueous solution may be a concept including all of a hyaluronic acid aqueous solution, a hyaluronic acid salt aqueous solution, and a mixed aqueous solution of hyaluronic acid and a hyaluronic acid salt.
- the hyaluronic acid salt may be an inorganic salt such as sodium hyaluronate, potassium hyaluronate, calcium hyaluronate, magnesium hyaluronate, zinc hyaluronate, or cobalt hyaluronate, an organic salt such as tetrabutylammonium hyaluronate, or a mixture thereof.
- the molecular weight of hyaluronic acid is not particularly limited, but is preferably 10,000 g/mol or more and 5,000,000 g/mol or less in order to realize various physical properties and biocompatibility.
- gelatin may refer to a protein obtained by treating animal-derived collagen with acid or alkali and subsequently extracting it.
- the molecular weight of gelatin is not particularly limited, but is preferably 10,000 g/mol or more and 5,000,000 g/mol or less in order to realize various physical properties and biocompatibility.
- the mixture of hyaluronic acid (HA) and gelatin is 50 parts by weight or more and 500 parts by weight or less, 100 parts by weight of gelatin based on 100 parts by weight of hyaluronic acid (HA). 500 parts by weight or less, or 100 parts by weight or more and 300 parts by weight or less.
- hyaluronic acid hyaluronic acid
- HA hyaluronic acid
- the mixture of hyaluronic acid (HA) and gelatin contains 50 parts by weight or more and 500 parts by weight or less of gelatin with respect to 100 parts by weight of hyaluronic acid (HA), thereby exhibiting excellent cell adhesion and mechanical mechanical properties.
- Polymer microparticles capable of realizing physical properties can be prepared.
- the metal ions include iron ions (Fe 3+ ), aluminum ions (Al 3+ ), copper ions (Cu 2+ ), iron ions (Fe 2+ ), and magnesium ions (Mg 2+ ). , barium ions (Ba 2+ ), calcium ions (Ca 2+ ), and the like. More specifically, the metal ion may be an iron ion, an aluminum ion, or a mixture thereof.
- the step of reacting the mixture containing the biocompatible polymer and metal ions to form crosslinked polymeric particles may include forming an aqueous solution in which the biocompatible polymer is dissolved; forming a solution containing the metal ion by adding the compound containing the metal ion to a polar solvent; and forming a mixed solution by mixing droplets of an aqueous solution in which the biocompatible polymer is dissolved and a solution containing the metal ion.
- the aqueous solution in which the biocompatible polymer is dissolved is 0.01% by weight or more and 10% by weight or less, 0.01% by weight or more of the biocompatible polymer based on the weight of the aqueous solution in which the entire biocompatible polymer is dissolved. 5 wt% or less, 1 wt% or more and 5 wt% or less, 1 wt% or more and 3 wt% or less, 2 wt% or more and 3 wt% or less, 2 wt% or more and 2.5 wt% or less.
- the step of adding the metal ion-containing compound to a polar solvent to form a metal ion-containing solution is not particularly limited, but may be formed, for example, by dispersing a metal ion-containing compound in a polar solvent such as ethanol. there is.
- the size of the particles can be appropriately controlled using an encapsulator (BUCHI, B-390) device.
- Forming a mixed solution by mixing droplets of the aqueous solution in which the biocompatible polymer is dissolved and a solution containing the metal ion, the metal ion is chelated to the biocompatible polymer and the biocompatible polymer is crosslinked via the metal ion structure can be formed.
- the crosslinking reaction is performed using only an organic crosslinking agent containing at least one reactive functional group as it includes the step of forming polymeric crosslinked particles by reacting a mixture containing a biocompatible polymer and metal ions.
- microparticles can be prepared in a polar solvent without using oil, so the oil washing process is omitted, so the effect of improving process efficiency can be realized.
- the metal ion is chelated to the biocompatible polymer and the biocompatible polymer forms a crosslinking structure through the metal ion
- oil is used compared to the case where the crosslinking reaction is carried out using only an organic crosslinking agent containing one or more reactive functional groups. Since the microparticles can be prepared in a polar solvent without the oil washing process being omitted, the effect of improving process efficiency can be realized.
- the compound containing the metal ion may be included in an amount of 200 parts by weight or more and 1000 parts by weight or less, 300 parts by weight or more and 1000 parts by weight or less, or 500 parts by weight or more and 1000 parts by weight or less, based on 100 parts by weight of the biocompatible polymer. .
- the method for producing the polymeric microparticles includes metal ions in an amount of 200 parts by weight or more and 1000 parts by weight or less with respect to 100 parts by weight of the biocompatible polymer as additional crosslinking reaction proceeds after the crosslinking reaction by metal ions as described above. Even a small amount of the mixture can be used to prepare polymeric microparticles having sufficient mechanical strength and sphericity.
- the content of the metal ion-containing compound exceeds 1000 parts by weight based on 100 parts by weight of the biocompatible polymer, a technical problem may occur in that a residual amount of the metal ion remains in the crosslinked particles.
- the organic crosslinking agent containing one or more reactive functional groups may include a crosslinking agent having 1 to 30 carbon atoms and containing one or more reactive functional groups.
- the type of the reactive functional group is not particularly limited, but examples thereof include a hydroxy group, an epoxy group, a carboxy group, an amino group, a (meth)acrylate group, a nitrile group, a thiol group, an aldehyde group, or a vinyl group.
- the organic crosslinking agent including one or more reactive functional groups may include one or more or two or more formyl groups or epoxy groups.
- the formyl group or epoxy group may be a cross-linkable functional group that reacts with the aforementioned biocompatible polymer to form cross-linked particles.
- examples of the organic crosslinking agent containing one or more reactive functional groups are not particularly limited.
- the crosslinking agent is glutaraldehyde, butanediol diglycidyl ether (1,4-butandiol diglycidyl ether: BDDE), ethylene glycol diglycidyl ether (EGDGE), hexanediol diglycidyl Cidyl ether (1,6-hexanediol diglycidyl ether), propylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, polytetramethylene glycol diglycidyl Ether (polytetramethylene glycol diglycidyl ether), neopentyl glycol diglycidyl ether, polyglycerol polyglycidyl ether, diglycerol polyglycidyl ether, glycerol Polyglycerol Polyglycerol Polyglycerol Polyg
- the organic crosslinking agent containing one or more reactive functional groups may be glutaraldehyde or butanediol diglycidyl ether (BDDE).
- BDDE butanediol diglycidyl ether
- the organic crosslinking agent containing one or more reactive functional groups is based on 100 parts by weight of the biocompatible polymer. 150 parts by weight or more and 1000 parts by weight or less, 200 parts by weight or more and 1000 parts by weight or less, 300 parts by weight or more and 800 parts by weight or less, 400 parts by weight or more and 500 parts by weight or less.
- the method for producing the polymeric microparticles includes at least one reactive functional group in an amount of 150 parts by weight or more and 1000 parts by weight or less based on 100 parts by weight of the biocompatible polymer, as an additional crosslinking reaction is performed after the crosslinking reaction.
- Polymer microparticles having sufficient mechanical strength and sphericity can be prepared even by adding a small amount of an organic crosslinking agent.
- the content of the organic crosslinking agent containing one or more reactive functional groups exceeds 1000 parts by weight based on 100 parts by weight of the biocompatible polymer, a technical problem may arise in that a residual amount of unreacted crosslinking agent remains in the crosslinked particles.
- the polar solvent is not particularly limited, but, for example, ethanol, N,N-dimethylformamide , N,N-dimethylacetamide, N-methyl-2-pyrrolidone, N-methylcaprolactam, 2-pyrrolidone, N-ethylpyrrolidone, N-vinylpyrrolidone, dimethylsulfoxide, tetra Methylurea, pyridine, dimethylsulfone, hexamethylsulfoxide, gamma-butyrolactone, 3-methoxy-N,N-dimethylpropanamide, 3-ethoxy-N,N-dimethylpropanamide, 3-butoxy- N,N-dimethylpropanamide, 1,3-dimethyl-imidazolidinone, ethyl amyl ketone, methyl
- the polar solvent containing an organic crosslinking agent containing one or more reactive functional groups may be an alkaline mixed solvent.
- the additional crosslinking reaction of the present invention may proceed on an alkaline mixed solvent in which an aqueous alkali solution is mixed with a polar solvent.
- aqueous alkali solution are not particularly limited, but may be, for example, aqueous sodium hydroxide solution.
- the polar solvent including the organic crosslinking agent containing one or more reactive functional groups is an alkaline mixed solvent, it is possible to increase the efficiency of the crosslinking reaction by creating a favorable environment for the nucleophilic substitution reaction ( SN reaction).
- the microcarrier of one embodiment may include a cell adhesion inducing layer formed on the surface of the polymeric microparticles.
- the cell adhesion inducing layer is composed of cell adhesion materials, and allows adherent cells to be stably attached, spread, and cultured.
- the cell adhesion inducer layer is gelatin, collagen, fibronectin, chitosan, polydopamine, poly-L-lysine, vitronectin, peptides including RGD, acrylic polymers including RGD, lignin, cationic dextran and at least one cell adhesion substance selected from the group consisting of derivatives thereof.
- the cell adhesion inducer layer is gelatin, collagen, fibronectin, chitosan, polydopamine, poly-L-lysine, vitronectin, peptides including RGD, acrylic polymers including RGD, lignin, cationic It may include a cell adhesion substance including one selected from the group consisting of dextran and derivatives thereof, or a mixture of two or more kinds thereof.
- the cell adhesion inducing layer may be formed on the surface of the polymeric microparticles. That is, the cell adhesion inducing layer may directly contact the surface of the polymeric microparticles, or the cell adhesion inducing layer may contact the surface of another layer contacting the surface of the polymeric microparticles.
- the microcarriers include a cell adhesion induction layer formed to directly contact the surface of the polymeric microparticles, and the floating degree of the microcarriers in the culture medium can be controlled by introducing a cell adhesion induction layer on the surface of the microcarriers. and can have the effect of stably attaching and culturing cells.
- the cell adhesion inducing layer may have a layer thickness of 1 nm to 10,000 nm, or 10 nm to 1000 nm, or 50 nm to 500 nm, or 80 nm to 200 nm, and the layer thickness of the cell adhesion inducing layer is It can be obtained through the value obtained by subtracting the radius of the polymeric microparticles inside from the radius of the entire microcarrier.
- the radius means 1/2 of the diameter. Examples of methods for measuring the diameter are not particularly limited, but may be measured through, for example, confocal fluorescence microscopy, electron transmission microscopy (TEM), cross-sectional IR, or cross-sectional SEM images.
- the microcarriers may have an average diameter of 1 ⁇ m to 1,000 ⁇ m, or 10 ⁇ m to 1000 ⁇ m, or 100 ⁇ m to 1,000 ⁇ m, or 100 ⁇ m to 800 ⁇ m.
- An example of a method for measuring the diameter is not particularly limited, but can be measured through an optical microscope, for example.
- the ratio of the radius of the polymeric microparticles to the thickness of the cell adhesion inducing layer may be 1:0.00001 to 1:0.1, or 1:0.0001 to 1:0.01.
- the ratio of the radius of the polymeric microparticles to the thickness of the cell adhesion inducing layer is less than 1:0.00001, the cell adhesion inducing layer is too thin compared to the polymeric microparticles, and there is a concern that the degree of adhesion between cells and microcarriers may be reduced during cell culture , When the ratio exceeds 1:0.1, the cell adhesion inducer layer is thicker than the polymeric microparticles, and the physical properties such as hydrophilicity of the polymeric microparticles are changed, thereby reducing dispersibility.
- the microcarrier has a cell adhesion calculated by the following formula of 2000% or more, or 2500% or more, or 2900% or more, or 4000% or less, or 2000% to 4000%, or 2500% to 4000%, or 2900% to 4000%.
- the cell culture medium, cells, and culture conditions are not particularly limited, and various previously known cell culture solutions, cells, and culture conditions can be applied without limitation.
- the method of measuring the number of cells is not particularly limited, and various methods of measuring the number of cells known in the art can be applied without limitation.
- the microcarrier has a cell adhesion calculated by the following formula of 2000% or more, or 2500% or more, or 2900% or more, or 4000% or less, or 2000% to 4000%, or 2500% to 4000%, or 2900% to 4000%, the cell adhesion of the microcarrier is improved, and through this, there is an advantage in that mass expansion of adherent cells is possible by increasing the surface efficiency through three-dimensional expansion culture.
- the cell adhesiveness calculated by the following formula does not reach the above range, the cell adhesiveness of the surface of the microcarrier is weak, making it difficult for the three-dimensional expansion culture to proceed sufficiently.
- the microcarrier may further include a polymer primer layer formed on the surface of the polymeric microparticles.
- a mixed layer of one type of primer polymer layer and one type of cell adhesion inducing layer may be further included on the surface of the polymer microparticle.
- the stacking order is not particularly limited. are all applicable.
- the primer polymer layer serves as an adhesive layer capable of introducing functional polymers to the surface of the polymeric microparticles, thereby effectively introducing a polymer layer for cell attachment to the surface of the microcarrier and stably maintaining it during culture.
- primer polymer layer examples include L-dihydroxyphenylalanine (L-DOPA), dopamine, polydopamine, and norepinephrine. , epinephrine, epigallocatechin, and any one or more selected from the group consisting of derivatives thereof.
- L-DOPA L-dihydroxyphenylalanine
- dopamine dopamine
- polydopamine polydopamine
- norepinephrine norepinephrine
- epinephrine epigallocatechin
- epigallocatechin any one or more selected from the group consisting of derivatives thereof.
- the microcarrier may be a microcarrier for cell culture.
- the micro carrier of one embodiment; And cells attached to the surface of the microcarrier; including, a cell complex may be provided.
- the contents of the microcarrier may include all of the above-described contents in the embodiment.
- the cell complex according to another embodiment can realize a high transplantation rate in the body while increasing cell viability by forming the complex in a state in which the cells are stably attached to the microcarrier.
- Examples of the cells are not particularly limited to adherent animal cells, but examples include fibroblasts, epithelial cells, osteoblasts, chondrocytes, hepatocytes, and human-derived cord blood cells. , human bone marrow-derived mesenchymal stem cells, Chinese hamster ovary (CHO) cells, renal cells (HEK293, BHK21, MDCK, vero cells, etc.), or a mixture of two or more thereof.
- the density of the cells may be greater than or equal to 1.02 g/cm 3 and less than 1.1 g/cm 3 .
- the cells may be attached to the surface of the microcarrier. That is, cells may directly contact the surface of the microcarrier, or cells may contact the surface of another layer contacting the surface of the microcarrier.
- a medical composition comprising the microcarrier of one embodiment or the cell complex of another embodiment may be provided.
- the contents of the microcarrier may include all of the above-described contents in the embodiment.
- Information about the cell complex may include all of the information described above in the other embodiments.
- the pharmaceutically effective substance may exist in a state contained in the polymeric microparticles.
- Examples of the pharmaceutically effective substance are not particularly limited, and depending on the application purpose of the polymeric microparticles of the embodiment, an active substance suitable for the purpose may be applied without limitation. That is, specific examples of the pharmaceutically effective substance are not limited, and include ampetaminol, arecolin, atropine, bupranolol, buprenorphine, and capsaicin.
- carisoprodol chlorpromazine, ciclopirox olamine, cocaine, desipramine, dyclonine, epinephrine , ethosuximide, floxetine, hydromorphine, imipramine, lidocaine, methamphetamine, melproic acid, methylphenidate ( methylpenidate, morphine, oxybutynin, nadolol, nicotine, nitroglycerin, pindolol, prilocaine, procaine ), propanolol, rivastigmine, scopolamine, selegiline, tulobuterol, valproic acid, donepezil, etc.
- EPO Erythropoietin
- human growth hormone hGH
- Exenatide GLP-1 (Glucagon-like peptide-1)
- insulin CSF (Granulocyte colony-stimulating factor)
- PTH progesterone parathyroid hormone
- the addition amount of the pharmaceutically effective substance is also not significantly limited, and the content can be used without limitation depending on the application purpose and subject.
- the active material may be included in an amount of 0.0001 parts by weight or more and 1000000 parts by weight or less based on 100 parts by weight of the polymeric microparticles, without limitation in a small amount or excessive amount relative to the polymeric microparticles.
- a cosmetic composition comprising the microcarrier of one embodiment or the cell complex of another embodiment.
- the contents of the microcarrier may include all of the above-described contents in the embodiment.
- Information about the cell complex may include all of the information described above in the other embodiments.
- the cosmetically effective substance may exist in a state contained in the polymeric microparticles.
- Examples of the effective cosmetic substance are not particularly limited, and depending on the application purpose of the polymeric microparticles of the embodiment, an effective substance suitable for the corresponding purpose may be applied without limitation. That is, specific examples of the cosmetically effective substance are not limited, and there are natural extracts, proteins, vitamins, enzymes, antioxidants, etc., and all substances with proven cosmetic effects are applicable without limitation.
- the addition amount of the cosmetically effective substance is also not significantly limited, and the content can be used without limitation depending on the application purpose and subject.
- the cosmetically effective substance may be included in an amount of 0.0001 parts by weight or more and 1000000 parts by weight or less based on 100 parts by weight of the polymeric microparticles, in a small amount or excessive amount relative to the polymeric microparticles.
- a medical product comprising the medical composition of the other embodiment.
- Information about the medical composition may include all of the information described above in the other embodiment.
- the examples of the above medical supplies are not greatly limited, they are suitable for cases where the properties of the present invention are to be inserted into the body or to be maintained for a long period of time. , wound healing agents, and the like.
- the present invention may provide a cosmetic product comprising the cosmetic composition of the other embodiment.
- Information about the cosmetic composition may include all of the information described above in the other embodiment.
- Examples of the cosmetic products are not greatly limited, but in order to implement the characteristics of the present invention, for example, cosmetic creams, lotions, hair gels, packs, and the like.
- the structure of the cosmetic pack is not greatly limited, for example, it may include a support and a cosmetically effective substance delivery layer formed on the support and including the polymeric microparticles of the other embodiments.
- the support include woven fabric, nonwoven fabric, silicone, polyethylene terephthalate, polyethylene, polypropylene, polyurethane, metal mesh, and polyester.
- a microcarrier that may be used, a cell composite including the same, a medical composition, a cosmetic composition, a medical product, and a cosmetic product may be provided.
- Figure 1 is an optical microscope (OM) picture of the polymer microparticles of Example 1.
- Example 2 is an IR photograph of the gelatin characteristic peak (1650 cm -1 ) of the polymeric microparticles of Example 1.
- Figure 3 shows the characteristic peak (1650 cm -1 ) of gelatin of the polymeric microparticles of Example 1. This is an IR photograph of the hyaluronic acid characteristic peak (1080 cm -1 ) relativized for
- hyaluronate weight average molecular weight: 500 kDa
- gelatin gel strength: 300 g Bloom
- the formed droplet was added to 80 mL of an ethanol solution to which 4 g of FeCl 3 , a compound containing iron ions (Fe 3+ ), was added using an encapsulator device, and at 4 ° C.
- the cross-linked particles were prepared by washing with ethanol.
- FIG. 1 An optical microscope (OM) photograph of the prepared polymeric microparticles is shown in FIG. 1 .
- FIG. 2 An IR photograph of the gelatin characteristic peak (1650 cm ⁇ 1 ) of the prepared polymeric microparticles is shown in FIG. 2 .
- the gelatin-containing portion was brightly displayed, confirming that gelatin was distributed in the shell of the prepared polymer microparticles.
- FIG. 3 An IR photograph of the hyaluronic acid characteristic peak (1080 cm ⁇ 1 ) relative to each other is shown in FIG. 3 .
- the recovered particles were immersed in tris buffer (pH 8.0) in which dopamine was dissolved at 1 mg/mL, and coated for 2 hours at room temperature under stirring. After washing the excess coating material with ethanol, the particles were filtered through a 45 ⁇ m sieve and used as a microcarrier for cell culture.
- tris buffer pH 8.0
- the polymer was prepared in the same manner as in Example 1, except that 2.2 g of 50% glutaraldehyde was added instead of 2.2 g of 1,4-butandiol diglycidyl ether (BDDE). Microparticles and microcarriers for cell culture were prepared.
- BDDE 1,4-butandiol diglycidyl ether
- Hyaluronate weight average molecular weight: 500 kDa
- gelatin gel strength: 300 g Bloom
- a mixed solution containing a microemulsion was prepared by mixing with a paraffin solution.
- BDDE 1,4-butandiol diglycidyl ether
- the prepared cross-linked particles were recovered using a sieve having an opening size of 45 ⁇ m.
- the recovered cross-linked particles were filtered through a sieve having an opening size of 500 ⁇ m, and the remaining cross-linked particles were analyzed.
- Hyaluronate (weight average molecular weight: 500 kDa) was dissolved in 0.1N NaOH aqueous solution at 2 wt.%, and gelatin (gel strength: 300 g Bloom) was dissolved at 2.5 wt.% in distilled water, mixing 10 mL of each solution. After preparing 20 mL, the formed droplets were added to 80 mL of an ethanol solution in which 4 g of FeCl 3 , a compound containing iron ions (Fe 3+ ), was added using an encapsulator device, and crosslinked at 4 ° C for 2 hours. After the reaction, crosslinked particles were prepared by washing with ethanol and distilled water. The prepared cross-linked particles were recovered by using a mesh sieve having an opening size of 45 ⁇ m. The recovered cross-linked particles were filtered through a sieve having an opening size of 500 ⁇ m, and the remaining cross-linked particles were analyzed.
- the prepared crosslinked particles were recovered using a sieve having an opening size of 45 ⁇ m.
- the recovered cross-linked particles were filtered through a sieve having an opening size of 500 ⁇ m, and the remaining cross-linked particles were analyzed.
- Hyaluronate (weight average molecular weight: 500 kDa) was dissolved in 0.1 N NaOH aqueous solution at a concentration of 2 wt.% and gelatin (gel strength: 300 g Bloom) was dissolved in distilled water at a concentration of 2.5 wt.% to prepare 5 ml each, A mixture of these two solutions was mixed with a liquid paraffin solution to prepare a mixed solution including a microemulsion. Thereafter, 2.2 g of 1,4-butandiol diglycidyl ether (BDDE) was added as a cross-linking agent to the mixed solution, followed by a cross-linking reaction at room temperature for 5 days.
- BDDE 1,4-butandiol diglycidyl ether
- the prepared crosslinked particles were recovered using a sieve having an opening size of 45 ⁇ m.
- the recovered cross-linked particles were filtered through a sieve having an opening size of 500 ⁇ m, and the remaining cross-linked particles were analyzed.
- Hyaluronate (weight average molecular weight: 500 kDa) and gelatin (gel strength: 300 g Bloom) were dissolved in distilled water at 2 wt.% and 2.5 wt.%, respectively, to prepare 5 ml each.
- a mixed solution containing a microemulsion was prepared by mixing with a paraffin solution. Thereafter, 2.2 g of 1,4-butandiol diglycidyl ether (BDDE) was added as a cross-linking agent to the mixed solution, followed by a cross-linking reaction at room temperature for 5 days. After washing with acetone, dichloromethane, and distilled water in that order, the prepared crosslinked particles were recovered using a sieve having an opening size of 45 ⁇ m. The recovered cross-linked particles were filtered through a sieve having an opening size of 500 ⁇ m, and the remaining cross-linked particles were analyzed.
- BDDE 1,4-butandiol diglycidyl ether
- 20 mL was prepared by mixing 10 mL of each solution in which alginate and cellulose were dissolved at 2.5 wt.% in distilled water, and then an ethanol solution to which 4 g of CaCl 2 , a compound containing calcium ions (Ca 2+ ), was added.
- a droplet formed using an encapsulator was added to 80 mL, followed by a cross-linking reaction at room temperature for 2 hours, and then washed with ethanol to prepare cross-linked particles.
- the cross-linked particles were added to 80 mL of an ethanol solution containing 4 g of CaCl 2 , a compound containing calcium ions (Ca 2+ ), and cross-linked at 4° C. for 2 hours to prepare polymeric micro-particles. After washing the prepared particles in the order of ethanol and distilled water, the prepared cross-linked particles were recovered using a sieve having an opening size of 45 ⁇ m. The recovered cross-linked particles were filtered through a sieve having an opening size of 500 ⁇ m, and the remaining cross-linked particles were analyzed.
- the polymeric microparticles obtained in (1) of Example 1 were used as microcarriers for cell culture.
- the average diameter, sphericity, strength, cell culture suitability, and stability of the polymeric microparticles prepared in Examples and Comparative Examples were evaluated in the following manner.
- the average diameter of the polymeric microparticles of Examples and Comparative Examples in distilled water was measured using a laser particle size analyzer (Horiba, Partica LA-960).
- the degree of sphericity according to the present invention was calculated as the average value of the ratio of the longest diameter to the shortest diameter (long axis ratio) of 30 random particles in the optical photograph.
- the strength of the polymer microparticles of Examples and Comparative Examples was measured using a texture analyzer. Thirty microparticles swollen with distilled water for 24 hours were placed in a single layer under the flat cylindrical probe of the equipment equipped with a 5 N load cell. The initial trigger force was set to 1 mN, and the particles were compressed at a speed of 1 mm/s. The force when deformed to 25% of the average particle diameter was determined as the compressive force.
- the average compressive strength was calculated by dividing the compressive force by 30, which is the number of microparticles to be measured.
- the cell culture medium was filled in a 6-well plate, and the cells were cultured by plate-rocking method by adding polymeric microparticles and cells. At this time, the temperature of the culture solution was maintained at 37 ° C, and the number of cells cultured in the polymer microparticles was confirmed by culturing for 3 days.
- cell culture suitability was evaluated according to the following criteria.
- the polymer microparticles of the examples are not only suitable for cell culture as the number of cultured cells is 100% or more compared to the number of cells introduced first, but the weight reduction rate of the dried polymer microparticles before and after autoclave treatment is 20% Appearing below, it was confirmed that it was suitable for sterilization treatment and long-term culture.
- the polymer microparticles of Example had an average compressive strength of 0.37 mN or more, realizing excellent mechanical properties, and a high ratio of particles exhibiting a high crosslinking density. That is, it was confirmed that the polymeric microparticles of Example implement excellent crosslinking density and mechanical properties while being suitable for cell culture, sterilization treatment, and long-term culture.
- the polymeric microparticles of Comparative Example 1 showed a weight reduction rate of more than 20% of the dried polymeric microparticles before and after autoclave treatment, making them unsuitable for sterilization and long-term culture, and having an average compressive strength of 0.23 mN, showing inferior mechanical properties. It was confirmed that the ratio of particles showing a low cross-linking density was high.
- the polymeric microparticles of Comparative Examples 3 to 5 did not form polymeric microparticles by adjusting the concentration of the aqueous solution in which the biocompatible polymer was dissolved to the same level as in Example 1, unlike Comparative Example 1. It was confirmed that the formation of polymeric microparticles was possible even at the biocompatible polymer concentration.
- the polymeric microparticles of Comparative Example 6 showed an average compressive strength of 0.29 mN in the distilled water state due to chemical crosslinking by a crosslinking agent, but were not suitable for cell culture due to the use of alginate and cellulose having no cell adhesion as biocompatible polymers. I was able to confirm.
- metal ions are cross-linked using calcium ions (Ca 2+ ), they can react reversibly with calcium ions present in the cell culture medium, and thus the particle strength during cell culture can be lowered.
- Example 1 The physical properties of the microcarriers for cell culture prepared in Example 1 and Comparative Example 8 were measured in the following manner and are listed in Table 2.
- the thickness of the coating layer formed on the surface of the polymeric microparticles in the microcarrier for cell culture was measured through cross-sectional TEM images.
- a culture solution containing mesenchymal stem cells (density: 1.05 g/cm 3 ) was filled in a 100 mL vertical wheel bioreactor (PBS), and the cell culture microcarrier was injected into the culture solution and stirred. After culturing at 37° C. for 7 days, the number of cells cultured in the microcarrier for cell culture was confirmed. And, as shown in the following equation, the cell adhesion of the microcarrier was evaluated by comparing the initially introduced cell number.
- the microcarrier for cell culture of Example 1 included a 0.1 ⁇ m cell adhesion material coating layer on the surface of the polymer microparticles, so it was confirmed that cell adhesion was significantly improved compared to Comparative Example 8. .
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Abstract
Description
구분 | 평균직경 (㎛) | 구형화도 | 평균 압축강도 (mN) | 세포 배양 적합성 | 안정성 |
실시예 1 | 317±21 | 0.95±0.08 | 2.10 | 적합 | 적합 |
실시예 2 | 346±26 | 0.96±0.13 | 1.37 | 적합 | 적합 |
실시예 3 | 319±32 | 0.95±0.05 | 0.37 | 적합 | 적합 |
비교예 1 | 385±13 | 0.98±0.09 | 0.23 | 적합 | 부적합 |
비교예 2 | 193±21 | 0.96±0.03 | 0.10 | 부적합 | 부적합 |
비교예 3 | 입자 제조 불가능 | ||||
비교예 4 | 입자 제조 불가능 | ||||
비교예 5 | 입자 제조 불가능 | ||||
비교예 6 | 301±48 | 0.94±0.11 | 0.29 | 부적합 | 적합 |
비교예 7 | 194±17 | 0.95±0.04 | 0.12 | 부적합 | 부적합 |
구분 | 코팅층 두께(㎛) | 세포부착성(%) |
실시예 1 | 0.1 | 2900 |
비교예 8 | 코팅층 없음 | 1900 |
Claims (20)
- 제1 생체 적합성 고분자, 금속이온 및 반응성 작용기를 1 개 이상 포함하는 유기 가교제를 포함하는 코어; 및 상기 코어의 전부 또는 일부를 둘러싸며, 제2 생체 적합성 고분자, 금속이온 및 반응성 작용기를 1 개 이상 포함하는 유기 가교제를 포함하는 쉘;을 포함하는, 코어-쉘 구조를 가지는 고분자 마이크로 입자, 및상기 고분자 마이크로 입자의 표면 상에 형성된 세포 부착 유도층;을 포함하는, 마이크로 캐리어.
- 제1항에 있어서,상기 코어는 제1 생체 적합성 고분자가 금속이온 및 반응성 작용기를 1 개 이상 포함하는 유기 가교제를 매개로 가교된 고분자 매트릭스를 포함하고,상기 쉘은 제2 생체 적합성 고분자가 금속이온 및 반응성 작용기를 1 개 이상 포함하는 유기 가교제를 매개로 가교된 고분자 매트릭스를 포함하는, 마이크로 캐리어.
- 제1항에 있어서,상기 제1 생체 적합성 고분자는 히알루론산을 포함하고,상기 제2 생체 적합성 고분자는 젤라틴을 포함하는, 마이크로 캐리어.
- 제2항에 있어서,상기 코어는, 코어에 포함되는 고분자 매트릭스 전체 부피에 대하여,히알루론산이 금속이온 및 반응성 작용기를 1 개 이상 포함하는 유기 가교제를 매개로 가교된 고분자 매트릭스를 50 부피% 초과로 포함하는, 마이크로 캐리어.
- 제2항에 있어서,상기 쉘은, 쉘에 포함되는 고분자 매트릭스 전체 부피에 대하여,젤라틴이 금속이온 및 반응성 작용기를 1 개 이상 포함하는 유기 가교제를 매개로 가교된 고분자 매트릭스를 50 부피% 초과로 포함하는, 마이크로 캐리어.
- 제1항에 있어서,상기 고분자 마이크로 입자는 증류수에서의 평균 직경이 1 ㎛ 이상인, 마이크로 캐리어.
- 제1항에 있어서,상기 고분자 마이크로 입자의 최장 직경을 갖는 단면을 기준으로,상기 쉘의 두께가 상기 고분자 마이크로 입자의 최장 직경의 95 % 이하인, 마이크로 캐리어.
- 제1항에 있어서,상기 반응성 작용기를 1 개 이상 포함하는 유기 가교제는,반응성 작용기를 1개 이상 포함하는 탄소수 1 내지 30의 가교제를 포함하는, 마이크로 캐리어.
- 제1항에 있어서,상기 고분자 마이크로 입자는입자 평균직경의 25% 수준으로 변형되었을 때의 평균 압축강도가 0.1 mN 이상인, 마이크로 캐리어.
- 제1항에 있어서,상기 고분자 마이크로 입자는광학 사진에서의 임의의 입자의 가장 긴 직경 대 가장 짧은 직경의 비율(장경비)인 구형화도가 0.9 이상 1.0 이하인, 마이크로 캐리어.
- 제1항에 있어서,상기 세포 부착 유도층은 젤라틴, 콜라겐, 피브로넥틴 키토산, 폴리도파민, 폴리 L-라이신, 비트로넥틴, RGD를 포함한 펩타이드, RGD를 포함한 아크릴계 고분자, 리그닌, 양이온성 덱스트란 및 이들의 유도체로 이루어진 군에서 선택되는 1종 이상의 세포 부착성 물질을 포함하는, 마이크로 캐리어.
- 제1항에 있어서,상기 세포 부착 유도층은 1 nm 내지 10,000 nm의 층 두께를 갖는, 마이크로 캐리어.
- 제1항에 있어서,상기 마이크로 캐리어는 1 ㎛ 내지 1000 ㎛의 평균직경을 갖는, 마이크로 캐리어.
- 제1항에 있어서,상기 마이크로 캐리어는 하기 수학식으로 계산되는 세포 부착성이 2000 % 이상인, 마이크로 캐리어:[수학식]세포부착성 = (마이크로 캐리어를 세포배양액에 투입하여 37 ℃에서 7일간 배양한 후 세포수 / 세포배양액에 최초 포함된 세포수) X 100.
- 제1항에 있어서,상기 마이크로 캐리어는 세포 배양용 마이크로 캐리어인, 마이크로 캐리어.
- 제1항의 마이크로 캐리어; 및상기 마이크로 캐리어 표면 상에 부착된 세포;를 포함하는, 세포 복합체.
- 제1항의 마이크로 캐리어 또는 제16항의 세포 복합체 중 어느 하나를 포함하는, 의료용 조성물.
- 제1항의 마이크로 캐리어 또는 제16항의 세포 복합체 중 어느 하나를 포함하는, 미용 조성물.
- 제17항의 의료용 조성물을 포함하는, 의료 용품.
- 제18항의 미용 조성물을 포함하는, 미용 용품.
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KR20110118859A (ko) * | 2010-04-26 | 2011-11-02 | 한국과학기술연구원 | 코어-쉘 구조의 성장인자 전달체, 그의 제조방법 및 세포 분화 또는 증식을 위한 그의 용도 |
KR102201482B1 (ko) * | 2019-07-29 | 2021-01-13 | 주식회사 피움바이오 | 주입력이 우수한 가교된 히알루론산 기반 기능성 생체 적합성 고분자 복합체의 제조 방법 |
KR20210011340A (ko) * | 2019-07-22 | 2021-02-01 | 주식회사 엘지화학 | 세포 배양용 마이크로 캐리어, 이의 제조방법 및 이를 이용하는 세포 배양 방법 |
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KR19990037094A (ko) * | 1997-10-27 | 1999-05-25 | 타이도 나오카타 | 약물 방출 속도가 제어된 의약 조성물 |
KR20040021615A (ko) * | 2001-06-27 | 2004-03-10 | 히사미쯔 제약 주식회사 | 시트 타입 팩제 |
KR20110118859A (ko) * | 2010-04-26 | 2011-11-02 | 한국과학기술연구원 | 코어-쉘 구조의 성장인자 전달체, 그의 제조방법 및 세포 분화 또는 증식을 위한 그의 용도 |
KR20210011340A (ko) * | 2019-07-22 | 2021-02-01 | 주식회사 엘지화학 | 세포 배양용 마이크로 캐리어, 이의 제조방법 및 이를 이용하는 세포 배양 방법 |
KR102201482B1 (ko) * | 2019-07-29 | 2021-01-13 | 주식회사 피움바이오 | 주입력이 우수한 가교된 히알루론산 기반 기능성 생체 적합성 고분자 복합체의 제조 방법 |
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AU2022355346A1 (en) | 2023-12-07 |
CN117460817A (zh) | 2024-01-26 |
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