WO2007132873A1 - 核酸、オリゴ核酸、又はその誘導体導入用の凍結乾燥体 - Google Patents
核酸、オリゴ核酸、又はその誘導体導入用の凍結乾燥体 Download PDFInfo
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- WO2007132873A1 WO2007132873A1 PCT/JP2007/060002 JP2007060002W WO2007132873A1 WO 2007132873 A1 WO2007132873 A1 WO 2007132873A1 JP 2007060002 W JP2007060002 W JP 2007060002W WO 2007132873 A1 WO2007132873 A1 WO 2007132873A1
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- 230000004962 physiological condition Effects 0.000 description 1
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- C12N15/1003—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor
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Definitions
- the present invention aims at introducing a nucleic acid, oligonucleic acid, or derivative thereof into a cell.
- Non-viral vectors that are one of such vectors, have high efficiency with no safety concerns, and have low immunogenicity and are easy to prepare include cationic polymers, cationic ribosomes Cationic substances such as cationic lipids have been studied
- Non-patent Document 3 Biochim Biophys Acta. 2000 Sep 29; 1468 (1-2 ): 127-138.
- the amount of sugar required here is 500 to 1000 times that of DNA by weight, and the solution after rehydration will have a much higher osmotic pressure than physiological conditions. And not practical.
- monosaccharides and disaccharides themselves have no beneficial effect on gene expression.
- dextran a neutral polysaccharide
- Patent Document 1 JP-A-2005-176830
- Patent Document 2 JP 2003-231748 A
- Non-Patent Document 1 J. Biomater. Sci. Polymer Edn., Vol. 14, No. 6, pp.515-531 (2003)
- Non-Patent Document 2 J. Pharm. Sci., Vol 90, ppl445-1455 ( 2001)
- Non-Patent Document 3 Biochim Biophys Acta. 2000 Sep 29; 1468 (1-2): 127-138
- Non-Patent Document 4 J. Pharm. Sci., Vol 94, ppl226-1236 (2005)
- nucleic acids, oligonucleic acids, or derivatives thereof As a result of intensive studies to eliminate the above-mentioned drawbacks, the inventors of the present application have found that nucleic acids, oligonucleic acids, or derivatives thereof; cationic polymers or cationic lipids or aggregates containing them; and When the lyophilized product of a complex containing an on-state polymer is introduced into cells, the introduced gene, oligonucleic acid, or derivative thereof can be expressed well and the present invention is completed. It came to.
- the present invention relates to a freeze-dried product of a nucleic acid, an oligonucleic acid, or a derivative thereof; a cationic polymer or a cationic lipid or an aggregate containing the same;
- the present invention relates to a preparation, a reagent, and a kit for introducing a nucleic acid, oligonucleic acid, or derivative thereof including the lyophilized product.
- a method for preparing the lyophilized product comprising a nucleic acid, an oligonucleic acid, or a derivative thereof; a cationic polymer or a cationic
- the present invention relates to a preparation method including a step of forming a complex by mixing a lipid or an aggregate containing the lipid; and a key-on polymer;
- the present invention further relates to a method for introducing a gene, oligonucleic acid, or a derivative thereof into a cell, wherein the lyophilized product is used.
- the freeze-dried product of the present invention can be easily adjusted in concentration, easy to handle, and excellent in storage stability.
- the lyophilized product of the present invention contains a eron polymer, a complex of extremely small size can be obtained even when it is rehydrated in a solvent and used as a suspension or dilution.
- a stable dispersion containing the body can be obtained at any concentration.
- nucleic acid, oligonucleic acid, or derivatives thereof can be efficiently introduced into cells without causing aggregation, and good by various administration methods such as local administration and intravenous administration. It shows the ability to express various functions.
- the lyophilized product of the present invention is a lyophilized product of a nucleic acid, an oligonucleic acid, or a derivative thereof; a cationic polymer or a cationic lipid or an assembly containing the same; .
- the nucleic acid, oligonucleic acid, or derivative thereof forms a complex due to ionic bonds with the force thione polymer or the cationic lipid or the aggregate containing it, and the cationic polymer or cationic lipid further It is ion-bonded to the polymer.
- these can form a composite mainly covered with a cationic polymer.
- nucleic acid, oligonucleic acid, or derivative thereof that can be used in the lyophilized product of the present invention
- any nucleic acid, oligonucleic acid or the like introduced by gene therapy or antisense therapy can be used.
- Various DNA and RNA (-and double-stranded) (plasmid DNA, double-stranded oligo RNA, mRNA, tRNA, rRNA, cDNA, etc.); sense or antisense oligonucleotides (including recombinants) ) And derivatives thereof; various nucleic acids such as ribozymes or mixtures thereof, oligonucleic acids, or derivatives thereof.
- nucleic acids may be modified or substituted if necessary.
- plasmid DNA for antisense nucleic acids, oligo DNA; S-oligo, double-stranded RNA for RNA interference, ribozyme RNA and the like can be preferably used, and plasmid DNA can be particularly preferably used.
- the cationic polymer that can be used in the lyophilized product of the present invention is a naturally-derived or synthetic polymer having a positively charged molecular weight of about 1000 to 3 million, and is complexed with DNA in water. It is possible to use a polymer having a plurality of functional groups, preferably 5 or more, in one molecule, such as an optionally substituted amino group or ammonia. Or a salt thereof (these groups may be mono- or polysubstituted by, for example, an alkyl group having 1 to 6 carbon atoms, a phenol group, etc.), an imino group, an imidazolyl group, a gua-dino group, etc. The organic amino group can be mentioned.
- Such cationic polymers include, for example, positively charged proteins and polypeptides; positively charged dendrimers; positively charged synthetic polymers; and positively charged polysaccharide derivatives, or their derivatives Salts, as well as combinations thereof.
- the molecular weight of a positively charged protein or positively charged polypeptide that can be used as a cationic polymer in the lyophilized product of the present invention is preferably about 1,000 to 500,000.
- proteins and polypeptides include proteins and polypeptides such as protamine, histone, HelA1, and gelatin, and polyamino acids containing positively charged amino acid residues. Can also be illustrated.
- polyamino acid containing a positively charged amino acid residue include poly-L-lysine, polyarginine, polyorthine and the like.
- salts of these proteins and polypeptides include hydrochlorides, sulfates, phosphates, borates and the like.
- a positively charged dendrimer having a functional group as described above that can be used as a cationic polymer is an amino group or an ammo- group that may be substituted at the end or inside of a branched molecular chain.
- a dendrimer having a sulfur group or a salt thereof (these groups may be mono- or polysubstituted by, for example, an alkyl group having 1 to 6 carbon atoms, a phenol group, etc.), and the molecular weight thereof is Preferably it is about 1,000 to 500,000.
- Specific examples of dendrimers include polyamidoamine dendrimers and polylysine dendrimers.
- Dendrimer salts include hydrochloride, sulfate, phosphate, borate, etc. ⁇ column can be shown.
- a positively charged synthetic polymer that can be used as a cationic polymer has a plurality of functional groups, preferably 5 or more, in one molecule that can form a complex with DNA in water as described above.
- Specific examples of synthetic polymers include polyethyleneimine (including linear polyethyleneimine or polybranched ethyleneimine), 2-dimethylaminoethyl methacrylate polymer or copolymer, 2-trimethylaminoethyl. Examples include a polymer or copolymer of metatalylate.
- the molecular weight of polyethyleneimine which is an example of a synthetic polymer, is preferably about 1,000 to 500,000, more preferably about 5,000 to 200,000, and most preferably about 10,000 to 100,000.
- Examples of the polyethyleneimine salt include hydrochloride, sulfate, phosphate and borate.
- a positively charged polysaccharide derivative that can be used as a cationic polymer has a plurality of functional groups that can form a complex with DNA in water, preferably 5 or more in one molecule. Preferable is ⁇ 10 to 3 million, more preferable ⁇ is 5000 to 500000 polysaccharide derivatives.
- Specific examples of such polysaccharides include chitosan and dextran derivatives having a functional group introduced as described above. Of these, the molecular weight of chitosan is preferably about 1,000 to 500,000, more preferably about 5,000 to 200,000, and most preferably about 10,000 to 100,000. Examples of the chitosan salt include hydrochloride and acetate. The molecular weight of the dextran derivative is preferably 3,000 to 1,000,000. Specific examples of such dextran derivatives include ethylaminoethyl-dextran.
- the above cationic polymer can be used as long as it is positively charged by introduction of a functional group such as an amino group even though it is not normally positively charged. May be further modified with a sugar chain, oligopeptide, antibody or the like.
- Cationic lipids that can be used in the lyophilized product of the present invention include DC— Choi (3 j8-( ⁇ - ( ⁇ ', ⁇ '-dimethylaminoethane)).
- DDAB N-distearyl-N, N-dimethylammum-umbromide
- DMRI N- (1,2-dimyristyloxyproper 3-yl) ) -N, N Dimethyl-N hydroxyethylammo-umbromide
- DODAC N, N —Geoleulu N, N dimethylammo-um chloride
- DOGS DOGS (diheptadecylamide glycylspermidine)
- DOSPA N— (1— ( 2, 3 dioleyloxy) propyl) N (2- (sperminecarboxamido) ethyl) —N, N dimethylammo-umtrifluoroacetate
- DOTAP N— (1— (2,3 dioleoyloxy) propyl) N, N, N trimethylammonium chloride
- DOTMA N— (1— (2,3 dioleyloxy) propyl) —N, N, N, N trimethylammonium
- the aggregate containing the cationic lipid for example, DOS PA
- DOPE dioleoylphosphatidylethanolamine
- cholesterol a neutral substance
- DOPE dioleoylphosphatidylethanolamine
- Things can be used.
- lipofuctamine 3: lw / w mixture liposome of DOSPA and DOPE above
- lipofectin 1: lwZw mixture ribosome of DOTMA and DOPE above
- a mixture thereof etc.
- Preferable examples can be given.
- the cationic polymer includes polyethyleneimine; protamine; Hel A 1; dendrimers such as polyamidoamine dendrimer and polylysine dendrimer; chitosan; 2-dimethylaminoethyl methacrylate.
- Polymer or copolymer; 2-trimethylaminoethyl methacrylate polymer or copolymer can be preferably used, and polyethyleneimine, polyamidoamine dendrimer, polylysine dendrimer, chitosan is particularly preferably used.
- lipofucamine the above-mentioned DOSPA and DOPE 3: lwZw mixed ribosome
- the ionic polymer used in the lyophilized product of the present invention is a negatively charged naturally-occurring or synthetic polymer having a molecular weight of about 5 to 4 million and containing a ionic group in the molecule.
- a polymer having a plurality of, preferably 5 or more, functional groups capable of forming a complex with a polycation in water can be used. Examples of such functional groups include carboxyl groups. , OSO H group, SO H group, phosphate group, and salts thereof
- ion-on polymers include zwitterionic polymers. included.
- the eron polymer includes a carboxyl group
- Synthetic polymers having functional groups selected from 3 groups, phosphate groups, and salts thereof; functional groups selected from carboxyl groups, -OSO H groups, SO H groups, phosphate groups, and salts thereof Base
- a polymer having an amino group or an ammonium group or a salt thereof (these groups may be mono- or polysubstituted by, for example, an alkyl group having 1 to 6 carbon atoms, a phenol group, etc.); As well as combinations thereof.
- darcosaminoglycan can be preferably used as the polysaccharide having a functional group as described above that can be used as a ionic polymer or a derivative thereof in the lyophilized product of the present invention.
- the molecular weight of such darcosaminodarlicans is preferably 1,000 to 4,000,000, more preferably 4,000 to 3,000,000.
- Specific examples of such darcosaminodarlicans include hyaluronic acid, chondroitin, chondroitin sulfate, keratan sulfate, heparin, dermatan sulfate, and the like. Of these, hyaluronic acid can be preferably used.
- Hyaluronic acid can also be used as its salt or a negatively charged derivative.
- the molecular weight may be 5,000 or more, but preferably 10,000 or more, more preferably 100,000 to 3 million.
- hyaluronic acid salts include sodium salts, potassium salts, and ammonium salts.
- examples of the derivatives of hyaluronic acid include those obtained by introducing polyethylene glycol, peptides, sugars, proteins, iodine acids, antibodies, or a part thereof into hyaluronic acid, such as spermine and supermidine. Zwitterionic derivatives with positively charged moieties are also included
- the polyamino acid containing an amino acid residue having a negatively charged side chain that can be used as a ionic polymer in the lyophilized product of the present invention includes a carboxyl group, -O-SOH group, SO Amino having side groups such as H groups, phosphate groups, and salts thereof
- a polyamino acid containing an acid residue preferably having a molecular weight of 500 to 1,000,000.
- This Specific examples of such polyamino acids include polyglutamic acid and polyaspartic acid.
- the PEG derivative having a carboxyl side chain that can be used as a ionic polymer in the lyophilized product of the present invention has a plurality of carboxyl side chains per PEG molecule, preferably 5 or more. Above, preferably 2,000 or more, more preferably PEG derivative having a molecular weight of 4,000 to 40,000.
- the PEG derivative having a carboxyl side chain can also be used as a salt or a negatively charged derivative thereof. Examples of these salts include sodium salts, potassium salts, and ammonium salts. Specific examples of such PEG derivatives include the PEG derivatives described in Non-Patent Document 1 (J. Biomater. Sci. Polymer Edn. Vol. 14, pp 515-531 (2003)). it can.
- the synthetic polymer having a group is a functional group selected from a plurality of, preferably 5 or more, carboxyl groups, O—SOH groups, SOH groups, phosphate groups, and salts thereof per molecule.
- polymer or copolymer having a molecular weight of 5 to 4 million, preferably a polymer or copolymer.
- a polymer or copolymer include a polymer or copolymer of acrylic acid or methacrylic acid having a molecular weight of 1,000 to 3,000,000!
- succi-midylated poly-L-lysine examples include succi-midylated poly-L-lysine.
- a group, or an amino group or an ammonium group or a salt thereof (these groups may be mono- or poly-substituted with, for example, an alkyl group having 1 to 6 carbon atoms, a phenyl group, or the like). May be a carboxyl group, OSO H group, SO
- a plurality of functional groups selected from H groups, phosphate groups, and salts thereof, preferably 5 or more, and substituted as described above may be an amino group or an ammonium group or a salt thereof.
- the ionic polymer that can be used in the lyophilized product of the present invention is usually negatively charged, and even if it is negatively charged by the introduction of a functional group such as a carboxyl group. Any of these can be used, and if necessary, can be further modified with sugar chains, oligopeptides, antibodies, etc.
- an ionic polymer such as hyaluronic acid, a PEG derivative having a carboxyl side chain, polyacrylic acid, or a salt thereof is preferably used.
- Hyaluronic acid, a PEG derivative having a carboxyl side chain, or a salt thereof can be particularly preferably used.
- a polymer having a specific adhesion ability to a target cell for nucleic acid introduction as a eron polymer, it is possible to introduce nucleic acid specifically to the target cell.
- a polymer having a specific adhesion ability to a target cell for nucleic acid introduction as a eron polymer, it is possible to introduce nucleic acid specifically to the target cell.
- hyaluronic acid when used as a key polymer, cells having cell surface molecules such as CD44 that specifically bind to hyaluronic acid can be targeted.
- a Ron peptide-introduced polymer it is possible to target many types of tumor cells, and by using a Ron-introduced polymer in which a galactose side chain is introduced, hepatocytes can be targeted. Alternatively, liver-derived cells can be targeted.
- a combination of a cationic polymer or a cationic lipid or an assembly containing the cationic polymer and a cationic polymer includes polyethyleneimine and hyaluronic acid; polyethyleneimine and carboxyl side chain.
- PEG derivatives with DOSPA eg lipofuectamine (DOSPA and DOPE 3: lwZw mixture liposomal)
- DOSPA containing aggregates eg lipofuectamine
- PEG derivatives with carboxyl side chains can be preferably mentioned.
- the molar ratio of the charged group of the nucleic acid, oligonucleic acid, or derivative thereof used in the lyophilized product of the present invention to the cationic polymer or cationic lipid or assembly containing the same (negative charge: positive charge ratio)
- the ratio of 1: 0.8 to 1: 100 is preferably 1: 1 to 1:50, more preferably 1: 1.2 to 1:30.
- the compounding ratio of the nucleic acid, oligonucleic acid or derivative thereof and the cationic polymer or cationic lipid or aggregate containing the same is the molar ratio of each charged group, specifically, the nucleic acid, oligonucleic acid.
- a negative charge of a derivative thereof as a phosphate ion a positive charge of a cationic polymer or a cationic lipid or an assembly containing the same or a molar ratio of functional groups capable of being positively charged.
- the molar ratio (negative charge: negative charge ratio) of each charged group of the nucleic acid, oligonucleic acid or derivative thereof and the anionic polymer used in the lyophilized product of the present invention is the target cell 'nucleic acid etc.'
- the force varies depending on the type of the on-polymer, but is preferably 1: 0.2 to 1: 1000, more preferably 1: 0.2 to 1: 100, and more preferably 1: 1 to 1:60.
- the compounding ratio of the nucleic acid, oligonucleic acid or derivative acid thereof to the ionic polymer is a molar ratio of each charged group. Specifically, the phosphate anion of the nucleic acid, oligonucleic acid or derivative thereof.
- Negative charge by: Refers to the molar ratio of the negatively charged or negatively chargeable functional group of the anionic polymer.
- the self-combination it between nucleic acid and hyaluronic acid may be 1: 0.2 to 1: 1000, preferably 1: 0.2 to 1: 100. Yes, more preferably 1: 1 to 1:60.
- the compounding ratio of the nucleic acid and the PEG derivative having a carboxyl side chain may be 1: 0.2 to 1: 1000, preferably Is 1: 0.2 to 1: 100, more preferably 1: 1 to 1:60.
- the mixing ratio of nucleic acid: polyethyleneimine: hyaluronic acid is 1: 2 to 60: 1 to 240, preferably It is 1: 4 to 24: 1 to 160, more preferably 1: 7 to 20: 2 to 60, and particularly preferably 1: 8 to 14: 2 to 32.
- the compounding ratio of PEG derivative having nucleic acid: polyethyleneimine: carboxyl side chain is 1 : 2 to 60: 1 to 240, preferably 1: 4 to 24: 2 to 160, more preferably 1: 7 to 20: 2 to 60, particularly preferably 1: 8 to 14: 4 to 32 is there.
- the mixing ratio of nucleic acid: lipofectamine: hyaluronic acid is: 1: 1-50: 0.2-240, preferably 1: 1.2-48: 0.2-160, more preferably 1: 1.5-30: 0.5-60, particularly preferably 1: 1.8-16: 1- 32.
- the ratio of the PEG derivative having a nucleic acid: ribofactoramine: carboxyl side chain is 1: 1-50: 0.1-160, preferably 1: 1.2-48: 0.2-160, more preferably 1: 1.5-30: 0.5-60, particularly preferably 1: 1.8-16: 2 to 32.
- the preferred mixing ratio of the nucleic acid, oligonucleic acid, or derivative thereof contained in the lyophilized product of the present invention the cationic polymer or cationic lipid or aggregate containing it;
- the mixing ratio should be determined appropriately by those skilled in the art depending on the type of cells, nucleic acids, etc. used. Can do.
- the freeze-dried product of the present invention comprises the above-described nucleic acid, oligonucleic acid, or derivative thereof; a cationic polymer or a cationic lipid or an aggregate containing the same; It can be prepared by a step of forming a complex by mixing and then a step of freezing and drying it.
- the order of mixing is as follows: [1] nucleic acid, oligonucleic acid, or derivative thereof; [2] cationic polymer or cationic lipid or aggregate containing it, [3] order of cationic polymer, or [1] Nucleic acids, oligonucleic acids, or derivatives thereof; [2] cation polymers, [3] cationic polymers or cationic lipids or aggregates containing them are preferred.
- the nucleic acid, oligonucleic acid, or derivative thereof is bound to the cationic polymer or the cationic lipid or an aggregate containing the ionic bond, and the cationic polymer or the cationic lipid or the aggregate containing the cationic polymer is an ion.
- a complex which is ion-bonded to the functional polymer is also formed.
- the outer shell of such a complex structure is mainly covered with a cation polymer to form an embodiment having a negative surface potential.
- the complex obtained in the above is freeze-dried. Freeze-drying can be carried out under normal freeze-drying conditions, for example, under reduced pressure (preferably 5 to: LOOmmHg, more preferably lOmmHg), outside temperature—78 ° C. to 60 ° C., preferably —30 ° It can be performed by drying at C to 40 ° C. The time required for drying varies depending on the degree of vacuum and the amount of solvent, and is usually completed in 1 hour to 2 days.
- the lyophilized product of the present invention thus prepared can be used for experimental animals or various kinds of gene therapy, antisense therapy, or experimental animals into which a specific gene has been introduced, controlled, knocked down or knocked out. Can be used to create cells.
- the lyophilized product of the present invention may be used as a rehydrate by suspending or dissolving the lyophilized product of the present invention in a solvent such as water, physiological saline, buffer solution, glucose solution, or medium solution immediately before use. it can.
- a solvent such as water, physiological saline, buffer solution, glucose solution, or medium solution immediately before use. it can.
- the lyophilized product is suspended or diluted using, for example, a solvent 100 to 1000 times (weight ratio) of the nucleic acid, oligonucleic acid, or derivative thereof. Since different amounts of solvents and different types of solvents can be used before lyophilization, it is easy to prepare relatively high concentration suspensions and solutions (for example, solutions containing 1 mg of DNA in
- the lyophilized product of the present invention rehydrated in this manner is specifically hydrated with the target cells taken out of the body, for example, during the introduction of nucleic acid or the like into the cells.
- the gene or antisense nucleic acid is introduced by treatment with the lyophilized product of the present invention, and then the cells are returned to the living body to express the target gene, or in vivo, in situ Any method commonly used for introduction of nucleic acids, oligonucleic acids, or derivatives thereof into living cells, such as direct gene introduction methods or antisense nucleic acid introduction methods, can be used.
- the lyophilized product of the present invention is a target for introduction of nucleic acid or the like that is brought into contact with a cell to which nucleic acid or the like is introduced as it is without being rehydrated or subcutaneously transferred to an animal to which nucleic acid or the like is introduced. It can be administered by means such as by transplanting within, on or near a tissue.
- the amount of the lyophilized product of the present invention applied to cells varies depending on the introduction method, the type of disease, etc. described above.
- the amount of nucleic acid, oligonucleic acid, or derivative thereof can be used as an ex vivo method, in situ.
- Method 0.2 to 0.2 cm in diameter per well of 1 to 2 cm: LO ⁇ gZl ⁇ 4 to 7 'cells, in viv
- the force varies greatly depending on the administration site.
- local administration within the tumor for example, 5 to 100 ⁇ g Zcm 3 ′, for example, for administration to an organ such as a tumor or bladder, for example, 0.1 ⁇ g to 100 mg Z organ, 0. lng ⁇ : LOmgZKg 'can be body weight.
- a hydrated lyophilized hydrate of the present invention is injected into a vein, subcutaneous or muscle, abdominal cavity, intratumoral, in the vicinity of a tumor, etc .; nasal cavity, oral cavity Inhaled from lungs, etc .; injected directly into the urinary bladder or rectum; administered directly into the affected tissue or nearby blood vessels; or supported on porous materials such as gels and sponges, non-woven fabrics, etc. Any method of gene therapy techniques can be used, such as placement in
- the above amount of the lyophilized product is obtained by the ex vivo method, the in situ method, or the in vivo method as described above. It can be used.
- the positive charge possessed by a complex of a normal nucleic acid, oligonucleic acid, or a derivative thereof, and a force thione polymer, a cationic lipid, or an aggregate containing the same is added.
- -Neutralization of ON polymer and its neutralization effect is maintained even after administration to living body and cells, so that it is aggregated by complex and serum protein, blood cell, extracellular matrix, etc.
- the like, and the enzymatic degradation of the nucleic acid, oligonucleic acid, or derivative thereof is blocked, so that the nucleic acid is efficiently taken up by the cell and its expression efficiency is high.
- the lyophilized hydrate of the present invention can be used as a preparation or reagent for introducing a nucleic acid, oligonucleic acid, or a derivative thereof, or as a kit for introducing a nucleic acid, oligonucleic acid, or a derivative thereof. it can.
- Plasmid Polyethyleneimine (PEI) Hyaluronic acid (HA) complex by freeze-dried product
- the lyophilized gene / PEI / HA ternary complex was incubated with B16 derived from mouse melanoma cells to confirm the expression of the luciferase gene.
- the same luciferase plasmid described in Non-Patent Document 6 (Biomacromolecules Vol. 7, pp 1274-1279) was used.
- HA hyaluronic acid “derived from microorganisms” of Nacalai Testa Co., Ltd. was used.
- PBS was prepared by dissolving Phosphate Buffered Salts (Tablet) manufactured by Roman Industries in distilled ion-exchanged water. The same applies to the following embodiments.
- B16 cells Two days before gene introduction, B16 cells were seeded in a 24-well multiplate and incubated for 2 days using EMEM medium.
- the cell lysate was used as it was for protein assembly. Protein assay was performed using a protein assay kit from Bio-Rad. [0054] For comparison, gene expression was examined for those that were not supplemented with HA, including those that were lyophilized and those that were lyophilized.
- the value in () in the figure is the ratio of the PEI cation, the HA cation to the plasmid cation, specifically, the molar ratio of the charge of PEI HA to the DNA. is there.
- Example 1 in [2], the luciferase plasmid was first prepared by adding HA, adding PEI to the force, mixing, and freeze-drying.
- the value in () in the figure is the ratio of the PEI cation, the HA cation to the plasmid cation, specifically, the molar ratio of the charge of PEI HA to the DNA. is there.
- PRG-C Plasmid / PRT / carboxyl side chain-containing rod
- Example 3 PEG-C having a molecular weight of about 10,000 and containing about 18 carboxyl groups in one molecule was used as a ionic polymer.
- Non-patent document 1 J. Biomater. Sci. Polymer Edn. Vol. 14, pp 515-531 (2003)).
- the lyophilized gene ⁇ PEI ⁇ PEG-C ternary complex was also incubated with B16 derived from mouse melanoma cells to confirm the expression of the luciferase gene.
- B16 cells Two days before gene introduction, B16 cells were seeded in a 24-well multiplate and incubated for 2 days using EMEM medium.
- PBS 50 1 was mixed with the lyophilized product prepared in [2] and incubated for 1 hour.
- the cell lysate was used as it was for protein assembly.
- Protein assay was performed using a protein assay kit from Bio-Rad.
- the value in parentheses in the figure is the ratio of PEI cation, PEG-C cation to plasmid cation, specifically to PEI, PEG-C DNA.
- the molar ratio of charge is the ratio of PEI cation, PEG-C cation to plasmid cation, specifically to PEI, PEG-C DNA.
- lipofuectamine manufactured by Invitrogen was used.
- B16 cells Two days before gene introduction, B16 cells were seeded in a 24-well multiplate and incubated for 2 days using EMEM medium.
- this cell lysate was used as it was.
- Protein assay was performed using a protein assay kit from Bio-Rad.
- Example 4 The same experiment as in Example 4 was performed using PEG-C having a charge ratio of 16 times that of plasmid DNA instead of HA. Specifically, instead of preparing the HA solution 251 in Example 4, as shown in the graph below, an amount of PEG-C having a charge ratio 16 times that of plasmid DNA was dissolved in water. Added as 25 ⁇ l.
- the value in () in the figure is the weight ratio of Lipofectamine and PEG-C to DNA.
- Example 5 in [2], a solution was prepared at a low concentration using 10 times the amount of the solvent, mixed and freeze-dried. In [4], PBS501 was added and rehydrated as in 5. Evaluate things in the same way.
- the value in () in the figure is the weight ratio of Lipofectamine and PEG-C to DNA.
- the expression was less than 1/1000 of that before lyophilization, and almost no expression was observed. Is highly expressed in lyophilized concentrate, and in the presence of 80% serum, the plasmid / Lipofectamine / PEG-C ternary lyophilizate is the original plasmid / Lipofectamine binary complex that has not been lyophilized. It was nearly 30% higher than that of the body!
- any gene that can be easily introduced by lyophilization can be selected. It was confirmed that a complex suspension solution having a concentration can be prepared.
- B16 derived from 4.72 x 10 6 mouse melanoma cells suspended in 100 1 medium "was transplanted subcutaneously into 5-week-old male ddY mice. A cut was made in the tumor, and the solid DNA / PEI / HA complex was embedded in the tumor and sutured.
- the solid DNA complex showed very high expression in the tumor (results shown in the table below)
- the total protein amount was quantified by measuring 20 ⁇ l of the sample supernatant diluted to 1/5 in 1 ml of BioRad protein quantification reagent and measuring the absorbance at 595 nm after 20 minutes.
- the lyophilized DNA complex was resolvated with 250 ⁇ l of 5% glucose.
- the total protein amount was obtained by diluting the supernatant of each sample to 1/80. In addition to lml of Park quantification reagent, 20 minutes later, the absorbance at a wavelength of 595 nm was measured and quantified.
- Medium EMEM medium (containing 10% FBS penicillin G sodium (100 units / m) and streptmycin sul fate (0.1 mg / mL))
- the results are shown in the table below.
- the concentrations in the table represent the final DNA concentration at the time of complex preparation in terms of nucleobase concentration.
- HA hyaluronic acid
- aqueous solution of anti-luciferase siRNA (Invitrogen) (21.28 ⁇ g / ml) in 25 ⁇ 1 is supplemented with 25 ⁇ l of protamine in water (78 g / ml), then hyaluronic acid solution (53.7 g / ml, or 1 07.5 g / ml) 50 1 was added. Mix the three components and put them into the wells of the culture plate. After 30 minutes, freeze at -30 ° C and then freeze-dry.
- B16 derived from 1.2 x 10 5 mouse melanoma cells suspended in medium "100 1" was plated on a culture plate, and after 4 hours, medium lml was added, followed by pDNA solution (50 g / ml) 25 1 and PEI solution (78 ⁇ g / ml) A mixture of 25 ⁇ 1 was prepared, and after another 20 hours, it was replaced with fresh lml medium.
- the total protein amount was quantified by measuring 20 ⁇ l of the sample supernatant diluted to 1/5 in 1 ml of BioRad protein quantification reagent and measuring the absorbance at 595 nm after 20 minutes.
- "Medium; EMEM medium contains 10% FBS ⁇ penicillin G sodium (100unit / mL), streptmycin sul fate (0.1mg / mL))
- Protamine was also lyophilized in the same way, but without hyaluronic acid.
- Luciferase expression was significantly suppressed in cells cultured on freeze-dried plates containing protamine (PRT) and hyaluronic acid (HA) (see table below).
- PRT protamine
- HA hyaluronic acid
- Example 2 The same solution of luciferase plasmid (0.8 mg / ml) used in Example 1 (0.8 mg / ml) 1.5 1 was diluted with 0, 1 2.5, or 200 1 water, and then an aqueous solution of hyaluronic acid (5.8 mg / ml) 3 1 was added thereto. Finally, 1.5 l (1.25 mg / ml) of PEI solution was added. 30 minutes after mixing the three components, it was frozen at -30 ° C and then freeze-dried. The lyophilized DNA complex was rehydrated with 6 ⁇ l of water, and 30 minutes later, 800 ⁇ l of water was added and the size was measured with a Malvern zeta analyzer.
- the ratio of 0 LOOnm particles and 100 200 nm among the generated composite particles is shown in the table below.
- the number after the component is the final DNA concentration at the time of complex preparation expressed as the nucleic acid base concentration.
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Abstract
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Priority Applications (5)
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EP07743437A EP2022853A4 (en) | 2006-05-17 | 2007-05-16 | FREEZERED PRODUCT FOR THE TRANSFER OF NUCLEIC ACID, OLIGONUCLEIC ACID OR DERIVATIVES THEREOF |
US12/227,394 US20090130761A1 (en) | 2006-05-17 | 2007-05-16 | Freeze-Dried Product for Introducing Nucleic Acid, Oligonucleic Acid or Derivative Thereof |
CN2007800179999A CN101448939B (zh) | 2006-05-17 | 2007-05-16 | 用于导入核酸、寡核酸或其衍生物的冷冻干燥体 |
JP2008515578A JPWO2007132873A1 (ja) | 2006-05-17 | 2007-05-16 | 核酸、オリゴ核酸、又はその誘導体導入用の凍結乾燥体 |
US13/396,875 US8492142B2 (en) | 2006-05-17 | 2012-02-15 | Freeze-dried product for introducing nucleic acid, oligonucleic acid or derivative thereof |
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US13/396,875 Division US8492142B2 (en) | 2006-05-17 | 2012-02-15 | Freeze-dried product for introducing nucleic acid, oligonucleic acid or derivative thereof |
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JP2010059064A (ja) * | 2008-09-01 | 2010-03-18 | Nagasaki Univ | 薬物送達複合体 |
JP2011516545A (ja) * | 2008-04-09 | 2011-05-26 | ビロメッド カンパニー, リミテッド | プラスミドdnaの発現増強用凍結乾燥dna製剤 |
JP2013039098A (ja) * | 2011-08-19 | 2013-02-28 | National Institute For Materials Science | 被覆hvj−e及び被覆hvj−eの製造方法 |
WO2013032028A1 (ja) * | 2011-08-29 | 2013-03-07 | 株式会社アルファ・ナノ・メディカ | 新規な複合体、それを含有する医薬及び癌の治療方法 |
JP2016500515A (ja) * | 2012-10-08 | 2016-01-14 | リポカリクス・ゲーエムベーハー | 形質導入試薬としてのカルボキシル化ポリアミン誘導体 |
JP2017014229A (ja) * | 2009-07-31 | 2017-01-19 | ラモット アット テル アビブ ユニバーシティ, リミテッド | ポリヌクレオチド剤を含む細胞標的化ナノ粒子およびその使用 |
US10639351B2 (en) | 2013-10-22 | 2020-05-05 | Helixmith Co., Ltd. | Method for treating amyotrophic lateral sclerosis with a polynucleotide encoding two or more isoforms of hepatocyte growth factor |
EP3799858A1 (en) | 2016-10-17 | 2021-04-07 | Pola Chemical Industries Inc. | Method for producing composite particles |
US11554179B2 (en) | 2018-07-19 | 2023-01-17 | Helixmith Co., Ltd | Lyophilized pharmaceutical compositions for naked DNA gene therapy |
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WO2016011203A1 (en) * | 2014-07-15 | 2016-01-21 | Life Technologies Corporation | Compositions with lipid aggregates and methods for efficient delivery of molecules to cells |
WO2016127251A1 (en) * | 2015-02-09 | 2016-08-18 | Polyvalor, Société En Commandite (S.E.C.) | Coated chitosan-based polyplex for delivery of nucleic acids |
CN106540273A (zh) * | 2016-11-21 | 2017-03-29 | 湖北工业大学 | Lpeis/dna/ha纳米载体及其制备方法和应用 |
US11559477B2 (en) * | 2019-03-01 | 2023-01-24 | Shanghai Cheermore Biological Technology Co., Ltd. | Preparation method and use of artificial exosome complex |
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CN115449534B (zh) * | 2022-10-09 | 2023-05-16 | 浙江大学舟山海洋研究中心 | 一种马尾藻和鱼糜废水的混合酶解方法 |
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Also Published As
Publication number | Publication date |
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US20090130761A1 (en) | 2009-05-21 |
US20120202283A1 (en) | 2012-08-09 |
EP2022853A1 (en) | 2009-02-11 |
US8492142B2 (en) | 2013-07-23 |
EP2022853A4 (en) | 2010-03-10 |
EP2022853A8 (en) | 2009-06-17 |
CN101448939A (zh) | 2009-06-03 |
CN101448939B (zh) | 2011-12-14 |
JPWO2007132873A1 (ja) | 2009-09-24 |
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