EP2376063A1 - Nouvelle forme d'administration de complexes de protéines ostéogéniques - Google Patents
Nouvelle forme d'administration de complexes de protéines ostéogéniquesInfo
- Publication number
- EP2376063A1 EP2376063A1 EP09809027A EP09809027A EP2376063A1 EP 2376063 A1 EP2376063 A1 EP 2376063A1 EP 09809027 A EP09809027 A EP 09809027A EP 09809027 A EP09809027 A EP 09809027A EP 2376063 A1 EP2376063 A1 EP 2376063A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polysaccharide
- solution
- group
- calcium
- bmp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- A61K31/716—Glucans
- A61K31/721—Dextrans
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- A—HUMAN NECESSITIES
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/06—Aluminium, calcium or magnesium; Compounds thereof, e.g. clay
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- A—HUMAN NECESSITIES
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- A61K33/42—Phosphorus; Compounds thereof
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- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- A61K38/18—Growth factors; Growth regulators
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- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- A61K38/18—Growth factors; Growth regulators
- A61K38/1858—Platelet-derived growth factor [PDGF]
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- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- A61K38/18—Growth factors; Growth regulators
- A61K38/1875—Bone morphogenic factor; Osteogenins; Osteogenic factor; Bone-inducing factor
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- A61K47/02—Inorganic compounds
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- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
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- A61K9/141—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers
- A61K9/143—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers with inorganic compounds
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- A61K9/141—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers
- A61K9/146—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers with organic macromolecular compounds
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- A61K9/19—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles lyophilised, i.e. freeze-dried, solutions or dispersions
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- A—HUMAN NECESSITIES
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/22—Polypeptides or derivatives thereof, e.g. degradation products
- A61L27/227—Other specific proteins or polypeptides not covered by A61L27/222, A61L27/225 or A61L27/24
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/54—Biologically active materials, e.g. therapeutic substances
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0021—Dextran, i.e. (alpha-1,4)-D-glucan; Derivatives thereof, e.g. Sephadex, i.e. crosslinked dextran
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/20—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
- A61L2300/252—Polypeptides, proteins, e.g. glycoproteins, lipoproteins, cytokines
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- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/412—Tissue-regenerating or healing or proliferative agents
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- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
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- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/80—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special chemical form
- A61L2300/802—Additives, excipients, e.g. cyclodextrins, fatty acids, surfactants
Definitions
- the present invention relates to the field of osteogenic formulations and more particularly formulations of osteogenic proteins belonging to the family of Bone Morphogenetic Proteins, BMPs.
- BMPs Bone Morphogenetic Proteins
- OPs Osteogenic Proteins
- BMPs are expressed as propeptides which, after post-translational processing, have a length of between 104 and 139 residues. They have a great homology of sequences between them and have similar three-dimensional structures. In particular, they have 6 cysteine residues involved in intramolecular disulfide bonds forming a "cysteine knot" (Scheufler C. 2004 J. Mol Biol 1999, 287, 103, Schlunegger MP, J. Mol Biol 1993, 231, 445). Some of them have a 7th cysteine also involved in an intermolecular disulfide bridge at the origin of dimer formation (Scheufler C. 2004 J. Mol Biol 1999: 287: 103).
- the BMPs In their active form, the BMPs assemble into homodimers or heterodimers as described by Israel et al. (Israel DI, Growth Factors, 1996, 13 (3-4), 291). Dimeric BMPs interact with BMPR transmembrane receptors (Mundy et al., Growth Factors, 2004, 22 (4), 233). This recognition is at the origin of a cascade of intracellular signaling involving Smad proteins in particular resulting in the activation or repression of target genes.
- BMPs with the exception of BMPs 1 and 3, play a direct and indirect role on the differentiation of mesenchymal cells causing their differentiation into osteoblasts (Cheng H., J. Bone and Joint Surgery, 2003, 85A 1544-). 1552). They further possess chemotactic properties and induce proliferation, differentiation and angiogenesis.
- recombinant human BMPs and in particular rhBMP-2 and rhBMP-7 have clearly shown an ability to induce bone formation in vivo in humans and have been approved for certain medical applications.
- recombinant human BMP-2 dibotermin alfa according to the international nonproprietary name, is formulated in the products marketed under the name InFUSE® in the United States and InductOs® in Europe. This product is prescribed in the fusion of the lumbar vertebrae and bone regeneration of the tibia for so-called non-union fractures.
- the surgical procedure consists first of all, to soak a collagen sponge with a solution of rhBMP-2, then to place the sponge in a hollow cage, LT Cage, previously implanted between the vertebrae.
- the recombinant human BMP-7 has the same therapeutic indications as BMP-2 and is the basis of two products: OP-I Implant for open fractures of the tibia and OP-I Putty for fusion of lumbar vertebrae.
- OP-1 Implant consists of a powder containing rhBMP-7 and collagen to be taken up in 0.9% saline solution. The paste obtained is then applied to the fracture during a surgical procedure.
- OP-I Putty comes in the form of two powders: one containing rhBMP-7 and collagen, the other carboxymethylcellulose (CMC). During surgery, CMC is reconstituted with 0.9% saline and mixed with rhBMP-7 and collagen. The paste thus obtained is applied to the site to be treated.
- osteogenic proteins are a major problem because of their instability and the need to obtain osteogenic formulations containing a minimal amount of osteogenic protein. This is to avoid the side effects generated by high concentrations of these proteins and also because of the price of these proteins.
- Many formulations have been and are developed as for example those mentioned in the review of Seeherman (Seeherman, H. et al., Spine 2002, 27 (16 Suppl 1), S16-S23.), Wherein the importance of the nature of the delivery system is emphasized.
- the delivery systems used must make it possible to increase the retention time of the proteins at the site of administration, to obtain a total release of the quantity of protein used and to avoid a too sudden release which may lead to broadcast outside the administration site.
- the delivery system used must also be able to serve as a matrix for bone growth on the site to be treated while allowing to limit this bone growth on the site to be treated.
- materials are employed in delivery systems to date, natural polymers, synthetic polymers, inorganic materials and mixtures of these materials. None of the systems developed has nevertheless significantly reduced the dose of BMP. This is related to, among other things, the instability of the protein in the formulation, or the poor bioavailability of the latter due to the structure of the support.
- natural polymers collagen, hyaluronans, fibrin, chitosans, alginates and other natural polysaccharides are used.
- the other natural polysaccharides in the form of hydrogels essentially have the defect of being resorbed too quickly, except to be previously crosslinked in the form of gels, which leads to the same disadvantages as those mentioned above for collagen sponges.
- the most commonly used polymers are poly ( ⁇ -hydroxy acids) such as polylactide (PLA), polyglycolide (PLG) and their copolymers (PLGA).
- Ceramics based on calcium phosphate such as hydroxyapatite (PAH) and tricalcium phosphate (TCP) and "non-ceramic" calcium phosphates, such as calcium-based cements.
- PHA hydroxyapatite
- TCP tricalcium phosphate
- non-ceramic calcium phosphates such as calcium-based cements.
- CPCs calcium phosphates
- BMP-2 is greater in a ceramic than in a collagen sponge.
- a clinical study of posterolateral fusion in humans (Boden, SD et al., Spine 2002, 27 (23), 2662-2673.) Reports that the dose of BMP-2 (40 mg) is greater with granules of BCP (60% PAH and 40% TCP) product developed by the company
- MEDTRONIC SOFAMOR only in a collagen sponge that does not contain calcium phosphate (12 mg).
- a very large number of systems have been developed based on non-ceramic calcium phosphate and among these are calcium phosphate cements.
- the cements were discovered in the 1980s by Brown and Chow and meet the following definition: "Calcium phosphate cements consist of an aqueous solution and one or more calcium phosphates. When mixing is done, the calcium phosphate (s) dissolve and precipitate into a less soluble calcium phosphate salt. During precipitation, the calcium phosphate crystals grow and become entangled, leading to the mechanical rigidity of the cement. (Bohner, M., Injury 2000, 31 Suppl 4, 37-47.).
- cement in general, is obtained by reacting a salt of soluble calcium phosphate with a solid calcium phosphate salt treated at more than 400 0 C to make it reagent.
- the reaction between these two compounds is uncontrolled, mostly exothermic and leads to a monolithic structure cement which sequesters the protein in its mass.
- the Applicant has developed new osteogenic compositions composed of a coprecipitate which contains at least one insoluble calcium salt and at least one complex between an osteogenic protein and a polysaccharide, said coprecipitate being in divided form.
- the conjunction of these two events makes it possible to obtain highly osteogenic formulations containing much smaller amounts of protein.
- osteogenic compositions comprising at least one osteogenic protein, a soluble salt of divalent cation and a matrix.
- osteogenic compositions comprising at least one osteogenic protein, at least one protein angiogenic, a soluble salt of divalent cation, optionally an anionic polysaccharide and optionally a matrix.
- osteogenic compositions comprising at least one osteogenic protein complex / anionic polysaccharide a soluble salt of at least divalent cation and a matrix.
- the invention also relates to formulations, pharmaceuticals and medical devices comprising said coprecipitate.
- the compositions and kits for implementing this method and obtaining the coprecipitate are also inventions described below.
- the coprecipitate results from simultaneous precipitation.
- the coprecipitate results from sequential precipitation.
- the complex between the anionic polymer and the osteogenic protein is obtained by adding the anionic polysaccharide solution to the osteogenic protein solution.
- the precipitation of the calcium salt is carried out in the form of calcium phosphate, by addition of a soluble phosphate solution.
- coprecipitate may vary according to the pH of the solutions used because the calcium phosphate salts have different solid phases depending on the pH and as a function of the anionic polysaccharide and the protein constituting the complex.
- the invention relates to a coprecipitate comprising at least one complex between an osteogenic protein and a polysaccharide in its insolubilized form and at least one insoluble calcium salt, said coprecipitate being in divided form.
- it further comprises at least one growth factor having a chemo-attractant and angiogenic potency.
- the insoluble calcium salt is selected from the group consisting of calcium orthophosphates in anhydrous or hydrated form alone or in admixture.
- the coprecipitate further comprises at least one insoluble calcium salt selected from the group consisting of calcium oxalate, calcium ascorbate, calcium carbonate or calcium sulfate.
- Said insoluble calcium salts may be mixed salts formed between cationic calcium ions and anionic ions such as phosphates, mono, di or tribasic, carboxylates polysaccharides, carbonates, hydroxides and any anions carried by the basics.
- Calcium orthophosphates are salts that result from the neutralization of different acidities of phosphoric acid by calcium salts and according to the literature the pKa range from 2.12 to 12.67 at 25 ° C.
- the main insoluble calcium orthophosphates are dicalcium phosphates, DCP, anhydrous or dihydrate, octacalcic phosphates,
- OCP tricalcium phosphates
- TCP tricalcium phosphates
- phosphacalcic hydroxyapatites PAHs or PCAs
- tetracalcium phosphate TTCP
- the anionic polymer / osteogenic protein complexes consist of the complexes described in application PCT / EP2008 / 059832 in the name of the Applicant.
- This coprecipitation according to the desired effect is optionally carried out in the presence of a base for adjusting the pH to a predetermined value.
- This solid chemical composition in the divided state, is obtained spontaneously under ambient temperature conditions, and its divided state is stable under in vitro physiological conditions.
- the invention consists of a kit for the preparation of an osteogenic implant comprising at least: a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one polysaccharide, a composition comprising at least one soluble calcium salt, a composition comprising at least one soluble salt of an anion capable of forming an insoluble salt of calcium,
- the kit further comprises an additional composition comprising at least one base.
- a second base can be added to compositions b, c or d.
- compositions comprising the osteogenic protein may also comprise the polysaccharide to form the complex.
- the composition comprising the osteogenic protein or the composition comprising the complex may also comprise the soluble salt of an anion capable of forming an insoluble salt of calcium and / or a base.
- the composition comprising the polysaccharide may also comprise the soluble salt of an anion capable of forming an insoluble calcium salt and / or a base.
- the composition comprising the soluble calcium salt may also comprise a base.
- the kit comprises: a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one anionic polysaccharide and at least one soluble salt of an anion capable of forming an insoluble salt calcium, c - a composition comprising at least one soluble calcium salt, d - a composition comprising at least one base.
- a second identical or different base base of the composition d can be added to the compositions b and c.
- the kit comprises a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one anionic polysaccharide, c - a composition comprising at least one soluble calcium salt and at least one base d - a composition comprising at least one soluble salt of an anion capable of forming an insoluble salt of calcium.
- a second identical or different base base of the composition c can be added to the compositions b and d.
- the kit comprises a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one anionic polysaccharide and at least one base, c - a composition comprising at least one calcium salt soluble, d - a composition comprising at least one soluble salt of an anion capable of forming an insoluble salt of calcium.
- the kit comprises a - a composition comprising at least one osteogenic protein and at least one soluble salt of an anion capable of forming an insoluble salt of calcium, b - a composition comprising at least one polysaccharide anionic compound, - a composition comprising at least one soluble calcium salt, d - a composition comprising at least one base.
- a second identical or different base base of the composition d can be added to the compositions b and c.
- the kit comprises a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one anionic polysaccharide, c - a composition comprising at least one soluble calcium salt, d - a composition comprising at least one soluble salt of an anion capable of forming an insoluble salt of calcium and at least one base.
- the kit comprises a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one anionic polysaccharide and at least one soluble salt of an anion capable of forming an insoluble salt of calcium, c - a composition comprising at least one soluble calcium salt, d - a composition comprising at least one base.
- the kit comprises a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one anionic polysaccharide, at least one base and at least one soluble salt of an anion capable of forming an insoluble salt of calcium, c - a composition comprising at least one soluble calcium salt.
- the kit comprises a - a composition comprising at least one anionic polysaccharide osteogenic protein complex and at least one soluble salt of an anion capable of forming an insoluble salt of calcium, b - a composition comprising at least one soluble calcium salt, c - a composition comprising at least one base.
- a second identical or different base base of the composition c can be added to the other compositions.
- the kit comprises: a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one anionic polysaccharide and at least one soluble salt of an anion capable of forming an insoluble salt calcium, c - a composition comprising at least one soluble calcium salt and at least one base.
- the kit comprises: a - a composition comprising at least one osteogenic protein, b - a composition comprising at least one anionic polysaccharide and at least one soluble salt of an anion capable of forming an insoluble salt calcium, c - a composition comprising at least one soluble calcium salt.
- the kit comprises: a - a composition comprising at least one anionic polysaccharide osteogenic protein complex, b - a composition comprising at least one soluble calcium salt and at least one base, c - a composition comprising at least one soluble salt of an anion capable of forming an insoluble salt of calcium.
- a second identical or different base base of the composition b can be added to the other compositions.
- the kit comprises: a - a composition comprising at least one anionic polysaccharide osteogenic protein complex, b - a composition comprising at least one soluble calcium salt, c - a composition comprising at least one soluble salt of an anion capable of forming an insoluble salt of calcium.
- the kit comprises: a - a composition comprising at least one anionic polysaccharide osteogenic protein complex, b - a composition comprising at least one soluble calcium salt, c - a composition comprising at least one soluble salt an anion capable of forming an insoluble salt of calcium and at least one base.
- a second identical or different base base of the composition c can be added to the other compositions.
- the kit comprises: a - a composition comprising at least one anionic polysaccharide osteogenic protein complex and at least one soluble salt of an anion capable of forming an insoluble salt of calcium, b - a composition comprising at least one soluble calcium salt. In one embodiment, the kit comprises: a - a composition comprising at least one anionic polysaccharide osteogenic protein complex and at least one soluble salt of an anion capable of forming an insoluble salt of calcium, b - a composition comprising at least one soluble calcium salt and at least one base.
- the kit comprises: a - a composition comprising at least one anionic polysaccharide osteogenic protein complex and at least one soluble salt of an anion capable of forming an insoluble calcium salt and at least one base, b - a composition comprising at least one soluble calcium salt.
- the kit comprises: a - a composition comprising at least one anionic polysaccharide osteogenic protein complex and at least one soluble salt of an anion capable of forming an insoluble salt of calcium and at least one base, b - a composition comprising at least one soluble calcium salt and at least one base.
- the composition comprising at least one osteogenic protein further comprises at least one growth factor having a chemo-attractant and angiogenic power
- the kit further comprises at least one organic matrix or a mineral matrix or a mixed matrix.
- the compositions constituting the kit are aqueous solutions.
- the compositions constituting the kit are lyophilizates.
- compositions constituting the kit are lyophilizates.
- the lyophilizates are rehydrated before reaction, with water or one of the other compositions in solution.
- composition comprising the osteogenic protein in the form of a lyophilizate can be rehydrated with the solution comprising an anionic polysaccharide, or with the solution comprising an anionic polysaccharide and a soluble salt of an anion capable of forming an insoluble salt. of calcium and / or a base.
- the formulations, medical devices and pharmaceuticals comprising said precipitate are aqueous suspensions.
- the formulations and pharmaceuticals comprising said precipitate are lyophilizates.
- the lyophilizates are rehydrated before use, by means of saline or blood.
- Osteogenic protein is understood to mean an osteogenic growth factor or BMP alone or in combination with a BMP chosen from the group of therapeutically active BMPs (Bone Morphogenetic Proteins).
- the osteogenic proteins are chosen from the group consisting of BMP-2 (Dibotermin-alpha), BMP-4, BMP-7 (Eptotermin-alpha), BMP-14 and GDF-5 alone. or in combination.
- BMPs used are human recombinant BMPs, obtained according to the techniques known to those skilled in the art or purchased from suppliers such as the company Research Diagnostic Inc. (USA).
- growth factor having a chemo-attractant and angiogenic power is meant proteins such as PDGFs, in particular PDGF-BB, VEGFs or FGFs, in particular FGF-2.
- the osteogenic protein is selected from the group consisting of BMP-2 (Dibotermin-alpha), BMP-4, BMP-7 (Eptotermin-alpha), BMP-14 and BMP-14.
- GDF-5 alone or in combination and at Less growth factor with chemoattractant and angiogenic potency is PDGF.
- the composition comprises at least one of the
- composition comprises at least one of the
- the composition comprises at least one
- GDF-5 and PDGF-BB are GDF-5 and PDGF-BB.
- the osteogenic protein is selected from the group consisting of BMP-2 (Dibotermin-alpha), BMP-4, BMP-7
- VEGF vascular endothelial growth factor
- the osteogenic protein is selected from the group consisting of BMP-2 (Dibotermin-alpha), BMP-4, BMP-7
- the soluble calcium salt is a calcium salt whose anion is selected from the group consisting of chloride, D-gluconate, formate,
- D-saccharate acetate, L-lactate, glutamate or aspartate.
- the soluble calcium salt is calcium chloride.
- soluble salt of an anion capable of forming a precipitate with the calcium ion a soluble salt whose anion is selected from the group consisting of phosphate anions comprising the phosphate ion PO 4 3 " the ion hydrogenphosphate HPO 4 2 " and dihydrogen phosphate ion H 2 PO 4" .
- a second anion selected from the group consisting of oxalate anions, ascorbate, carbonate or sulfate is further added to the composition comprising a phosphate anion.
- the soluble salts of an anion capable of forming a precipitate with the calcium ion are chosen from the group consisting of sodium phosphates, sodium oxalate, sodium ascorbate, sodium carbonate, sodium sulphate and sodium hydrogencarbonate.
- anionic polysaccharide is meant a polysaccharide selected from the group of polysaccharides functionalized with hydrophobic derivatives.
- the polysaccharides are chosen from the group of polysaccharide derivatives, predominantly having linkages glycosidic agents of (1,4) and / or (1,3) and / or (1,2) type, functionalized with at least one tryptophan derivative as described in application FR08 / 55567.
- These polysaccharides consist mainly of glycoside bonds of (1,4) and / or (1,3) and / or (1,2) type. They can be neutral, that is to say they can not carry acidic or anionic functions and carry acid functions.
- Trp tryptophan derivative
- said tryptophan derivative being grafted or bound to the polysaccharides by coupling with an acid function, said acid function possibly being an acid function of an anionic polysaccharide and / or an acid function carried by a linker R bonded to the polysaccharide by a function F, said function F resulting from the coupling between the linker R and a function -OH of the neutral or anionic polysaccharide, - F being either an ester function, thioester amide, carbonate, carbamate, ether, thioether or amine,
- R being a chain comprising between 1 and 18 carbons, optionally branched and / or unsaturated comprising one or more heteroatoms, such as O, N and / or S, and having at least one acid function
- Trp being a residue of a tryptophan derivative, L or D, produces a coupling between the tryptophan amine and the at least one acid carried by the R group and / or an acid carried by the anionic polysaccharide.
- the polysaccharide predominantly comprising glycoside bonds of (1,4), (1,3) and / or (1,2) type, functionalized by at least one derivative of tryptophan may correspond to the formula following general I:
- Formula I the polysaccharide predominantly consisting of glycoside bonds of (1,4) and / or (1,3) and / or (1,2) type, F resulting from the coupling between the linker R and an OH function of the neutral or anionic polysaccharide, being either an ester, thioester, amide, carbonate, carbamate, ether, thioether or amine function,
- R being a chain comprising between 1 and 18 carbons, optionally branched and / or unsaturated comprising one or more heteroatoms, such as O, N or / and S, and having at least one acidic function
- Trp being a residue of a tryptophan derivative, L or D, produces coupling between the amine of the tryptophan derivative and the at least one acid carried by the R group and / or an acid carried by the anionic polysaccharide.
- n represents the molar fraction of the Rs substituted by Trp and is between 0.05 and 0.7.
- i represents the mole fraction of acid functions carried by the group R per saccharide unit and is between 0 and 2
- j represents the mole fraction of acid functional groups carried by the anionic polysaccharide per saccharide unit and is between 0 and
- 1, - (i + j) represents the mole fraction of acid functions per saccharide unit and is between 0.1 and 2, when R is not substituted by Trp, then the acid or acids of the R group are carboxylates of cation, alkali preferably as Na or K.
- the polysaccharide is an anionic polysaccharide, when one or more acid functions of the polysaccharide are not substituted by Trp, then they are salified by a cation, alkali preferably as Na + or K + , said polysaccharides being amphiphilic at neutral pH.
- F is either an ester, a carbonate, a carbamate or an ether.
- the polysaccharide consists predominantly of glycoside bonds of (1,4) type.
- the polysaccharide consisting predominantly of glycoside bonds of (1,4) type is selected from the group consisting of pullulan, alginate, hyaluronan, xylan, galacturonan or a soluble cellulose. in water. In one embodiment, the polysaccharide is a pullulan.
- the polysaccharide is an alginate.
- the polysaccharide is a hyaluronan.
- the polysaccharide is a xylan. [000141] In one embodiment, the polysaccharide is a galacturonan.
- the polysaccharide is a water-soluble cellulose.
- the polysaccharide consists predominantly of glycoside bonds of (1,3) type. In one embodiment, the polysaccharide consisting predominantly of glycoside bonds of (1,3) type is a curdlane.
- the polysaccharide consists predominantly of glycoside bonds of (1,2) type.
- the polysaccharide consisting predominantly of glycoside bonds of (1,2) type is an inulin.
- the polysaccharide consists predominantly of glycoside bonds of (1,4) and (1,3) type.
- the polysaccharide consisting predominantly of glycoside bonds of (1,4) and (1,3) type is a glucan. In one embodiment, the polysaccharide consists predominantly of glycoside bonds of (1,4), and (1,3) and (1,2) type.
- the polysaccharide consists predominantly of glycoside bonds of (1,4) type, and (1,3) and (1,2) is mannan.
- the polysaccharide according to the invention is characterized in that the group R is chosen from the following groups:
- the polysaccharide according to the invention is characterized in that the tryptophan derivative is chosen from the group consisting of tryptophan, tryptophanol, tryptophanamide, 2-indole ethylamine and their cation salts. alkaline.
- the polysaccharide according to the invention is characterized in that the tryptophan derivative is chosen from the tryptophan esters of formula II.
- the polysaccharide may have a degree of polymerization m of between 10 and 10,000.
- it has a degree of polymerization m of between 10 and 1000.
- it has a degree of polymerization m of between 10 and 500.
- the polysaccharides are chosen from the group of dextrans functionalized with hydrophobic amino acids such as tryptophan and tryptophan derivatives as described in application FR 07/02316.
- the functionalized dextran can satisfy the following general formula III:
- R being a chain comprising between 1 and 18 carbons, optionally branched and / or unsaturated comprising one or more heteroatoms, such as O, N or / and S, and having at least one acid function
- R.sub.t group represents the mole fraction of FR- [AA] n substituent by glycoside unit and is between 0.1 and 2
- p represents the mole fraction of the R substituted by AA and is between 0.05 and 1
- the acid or acids of R group are cation carboxylates, alkali preferably as Na +, K +, said dextran being amphiphilic at neutral pH.
- the alkaline cation is Na +.
- F is either an ester, a carbonate, a carbamate or an ether.
- the polysaccharide according to the invention is a carboxymethyl dextran of formula IV.
- the polysaccharide according to the invention is a dextran monosuccinic ester of formula V:
- the polysaccharide according to the invention is characterized in that the group R is chosen from the following groups:
- the dextran according to the invention is characterized in that the hydrophobic amino acid is chosen from the derivatives of tryptophan, such as tryptophan, tryptophanol, tryptophanamide, 2-indole ethylamine and their alkaline cation salts.
- the dextran according to the invention is characterized in that the tryptophan derivatives are chosen from the tryptophan esters of formula II as defined above. In one embodiment, the dextran according to the invention is a ca:
- the dextran according to the invention is a tryptophan-modified dextran monosuccinic ester of formula VII:
- the dextran according to the invention is characterized in that the hydrophobic amino acid is chosen from phenylalanine, leucine, isoleucine and valine and their alcohol, amide or decarboxylated derivatives. In one embodiment, the dextran according to the invention is characterized in that the derivatives of phenylalanine, leucine, isoleucine and valine are chosen from the esters of these amino acids of formula VIII .
- the dextran according to the invention is characterized in that the hydrophobic amino acid is phenylalanine, and its alcohol, amide or decarboxylated derivatives.
- the dextran may have a degree of polymerization m of between 10 and 10,000.
- it has a degree of polymerization m of between 10 and 1000.
- the polysaccharides are chosen from the group of polysaccharides comprising carboxyl functional groups such as those described. in the application FR 08/05506 at least one of which is substituted by a hydrophobic alcohol derivative, denoted Ah: said hydrophobic alcohol (Ah) being grafted or bonded to the anionic polysaccharide by a coupling arm R, said coupling arm being bonded to the anionic polysaccharide by a function F 'said function F' resulting from the coupling between the amine function of the linker R and a carboxyl function of the anionic polysaccharide, and said coupling arm being linked to the hydrophobic alcohol by a function G resulting from the coupling between a carboxyl, isocyanate, thioacid or alcohol function of the coupling arm and a function of the hydrophobic alcohol, the carboxyl functions of the anionic polys
- F ' being an amide function
- G being either an ester, thioester, carbonate or carbamate function
- R being a chain comprising between 1 and 18 carbons, optionally branched and / or unsaturated, optionally comprising one or more heteroatoms, such as O, N or / and S, and having at least one acid function,
- Ah being a residue of a hydrophobic alcohol, produces coupling between the hydroxyl function of the hydrophobic alcohol and at least one electrophilic function carried by the R group, said polysaccharide comprising carboxyl functional groups being amphiphilic at neutral pH.
- the polysaccharide comprising carboxyl functional groups partially substituted by hydrophobic alcohols is chosen from polysaccharides comprising carboxyl functional groups of general formula IX:
- q represents the mole fraction of the carboxyl functions of the polysaccharide substituted with F-R-G-Ah and is between 0.01 and 0.7
- the carboxyl functional group (s) of the polysaccharide are carboxylates of cation, alkali preferably as Na + or K + .
- the polysaccharides comprising carboxyl functional groups are polysaccharides naturally carrying carboxyl functional groups and are chosen from the group consisting of alginate, hyaluronan and galacturonan.
- the polysaccharides comprising carboxyl functional groups are synthetic polysaccharides obtained from polysaccharides naturally comprising carboxyl functional groups or from neutral polysaccharides on which at least 15 carboxyl functional groups per 100 saccharide units have been used. have been grafted with the general formula X.
- the natural polysaccharides being chosen from the group of polysaccharides consisting mainly of glycoside bonds of (1,6) and / or (1,4) and / or (1,3) and / or (1,2) type, L being a bond resulting from the coupling between the linker Q and an OH function of the polysaccharide and being either an ester, thioester, carbonate, carbamate or ether function,
- r represents the mole fraction of the L-Q substitutions per saccharide unit of the polysaccharide
- the polysaccharide being a chain comprising between 1 and 18 carbons, optionally branched and / or unsaturated comprising one or more heteroatoms, such as O, N and / or S, and comprising at least one carboxyl functional group, - CO 2 H [000179]
- the polysaccharide consists predominantly of glycoside bonds of (1,6) type.
- the polysaccharide consisting predominantly of glycoside bonds of (1,6) type is dextran.
- the polysaccharide consists predominantly of glycoside bonds of (1,4) type.
- the polysaccharide consisting predominantly of glycoside bonds of (1,4) type is selected from the group consisting of pullulan, alginate, hyaluronan, xylan, galacturonan or a soluble cellulose. in water. [000183] In one embodiment, the polysaccharide is a pullulan.
- the polysaccharide is an alginate.
- the polysaccharide is a hyaluronan.
- the polysaccharide is a xylan.
- the polysaccharide is a galacturonan. [000188] In one embodiment, the polysaccharide is a water-soluble cellulose.
- the polysaccharide consists predominantly of glycoside bonds of (1,3) type.
- the polysaccharide consisting predominantly of glycoside bonds of (1,3) type is a curdlane.
- the polysaccharide consists predominantly of glycoside bonds of (1,2) type.
- the polysaccharide consisting predominantly of glycoside bonds of (1,2) type is an inulin. In one embodiment, the polysaccharide consists predominantly of glycoside bonds of (1,4) and (1,3) type.
- the polysaccharide consisting predominantly of glycoside bonds of (1,4) and (1,3) type is a glucan. In one embodiment, the polysaccharide consists predominantly of glycoside bonds of (1,4) and (1,3) and (1,2) type. In one embodiment, the polysaccharide consisting predominantly of glycoside bonds of (1,4) and (1,3) and (1,2) type is mannan. [000197] In one embodiment, the polysaccharide according to the invention is characterized in ts:
- r is between 0.1 and 2.
- r is between 0.2 and 1.5.
- the group R according to the invention is characterized in that it is chosen from amino acids.
- the amino acids are selected from alpha amino acids.
- the alpha amino acids are chosen from alpha natural amino acids.
- the natural alpha amino acids are chosen from leucine, alanine, iso-leucine, glycine, phenylalanine, thryptophan and valine.
- the hydrophobic alcohol is chosen from fatty alcohols.
- the hydrophobic alcohol is chosen from alcohols consisting of an unsaturated or saturated alkyl chain comprising from 4 to 18 carbons.
- the fatty alcohol is selected from meristyl, cetyl, stearyl, cetearyl, butyl, oleyl and lanolin.
- the hydrophobic alcohol is chosen from cholesterol derivatives.
- the cholesterol derivative is cholesterol
- the hydrophobic alcohol Ah is chosen from tocopherols.
- the tocopherol is alpha tocopherol.
- alpha tocopherol is the racemic alpha tocopherol.
- the hydrophobic alcohol is chosen from alcohols bearing an aryl group.
- the aryl group-bearing alcohol is chosen from benzyl alcohol and phenethyl alcohol.
- the polysaccharide may have a degree of polymerization m of between 10 and 10,000.
- it has a degree of polymerization m of between 10 and 1000.
- it has a degree of polymerization m of between 10 and 500.
- the polysaccharide is selected from the group consisting of dextran functionalized with tryptophan, dextran functionalized with octanol phenylalaninate, dextran functionalized with octanol glycinate, dextran functionalized with glycinate. of dodecanol or dextran functionalized with the ethyl ester of tryptophan.
- the bases are chosen from inorganic or organic bases.
- mineral bases mention may be made of sodium hydroxide, sodium hydrogencarbonate or sodium carbonate.
- imidazole and its derivatives include histidine, proline, ethanolamine or serine.
- an organic matrix may be used to promote repair, it is chosen from matrices based on purified natural collagen, sterilized and crosslinked.
- Natural polymers such as collagen are components of the extracellular matrix that promote attachment, migration and cell differentiation. They have the advantage of being extremely biocompatible and are degraded by enzymatic digestion mechanisms.
- Collagen-based matrices are obtained from fibrillar type I or IV collagen extracted from tendon or beef or pork bone. These collagens are first purified before being crosslinked and then sterilized. They can also be obtained by acid resorption of autologous bone, leading to the loss of the majority of the mineralized components but the preservation of collagen or non-collagenic proteins, including growth factors. These demineralized matrices can also be prepared in inactive form after extraction with chaotropic agents. These matrices are essentially composed of insoluble and crosslinked Type I collagen.
- Mixed materials may also be used, for example a matrix that combines collagen and inorganic particles.
- These materials can be in the form of a composite material with enhanced mechanical properties or in the form of a "putty" or collagen plays a role of binder.
- the inorganic materials that can be used essentially comprise calcium phosphate-based ceramics such as hydroxyapatite (HA), tricalcium calcium phosphate (TCP), biphasic calcium phosphate (BCP) or amorphous calcium phosphate ( ACP) which have as their main interest a chemical composition very close to that of bone. These materials have good mechanical properties and are immunologically inert. These materials can be in various forms such as powders, aggregates or blocks. These materials have very different degradation rates depending on their compositions.
- hydroxyapatite degrades very slowly (several months) while the tricalcium calcium phosphate degrades more quickly (several weeks). It is for this purpose that biphasic calcium phosphates have been developed because they have intermediate resorption rates. These inorganic materials are known to be primarily osteoconductive.
- the organic matrix is a crosslinked hydrogel.
- a crosslinked hydrogel is obtained by crosslinking polymer chains. Interchain covalent bonds defining an organic matrix. Polymers which can be used for the constitution of an organic matrix are described in Hoffman's review Hydrogels for Biomedical Applications (Adv Drug Deliv Rev, 2002, 43, 3-12).
- the implant may comprise an uncrosslinked hydrogel.
- uncrosslinked hydrogel a three-dimensional hydrophilic polymer network capable of adsorbing a large quantity of water or biological fluids (Peppas et al., Eur J Pharm Biopharm 2000, 50, 27 -46). This hydrogel consists of physical interactions and is therefore not obtained by chemical crosslinking of the polymer chains.
- hydrogels The list of polymers forming hydrogels is very broad and an important but not exhaustive list is given in Hoffman's review titled Hydrogels for Biomedical Applications (Adv Drug Deliv Rev., 2002, 43, 3-12). Among these polymers, synthetic polymers can be found as well as natural polymers. Another review covering hydrogel-forming polysaccharides allows selection of a polymer useful for the invention (Alhaic et al J. Control Release, 2007, 119, 5-24).
- the hydrogel-forming polymer is chosen from the group of synthetic polymers, among which the copolymers of ethylene glycol and lactic acid, the copolymers of ethylene glycol and of the acid.
- glycolic poly (N-vinyl pyrrolidone), polyvinyl acids, polyacrylamides, polyacrylic acids.
- the hydrogel-forming polymer is chosen from the group of natural polymers, among which hyaluronic acid, keratane, pullulan, pectin, dextran, cellulose and cellulose derivatives. alginic acid, xanthan, carrageenan, chitosan, chondroitin, collagen, gelatin, polylysine, fibrin and their biologically acceptable salts.
- the natural polymer is chosen from the group of polysaccharides forming hydrogels, among which hyaluronic acid, alginic acid, dextran, pectin, cellulose and its derivatives, pullulan, xanthan, carrageenan, chitosan, chondroitin and their biologically acceptable salts.
- the natural polymer is chosen from the group of polysaccharides forming hydrogels, among which hyaluronic acid, alginic acid and their biologically acceptable salts.
- the hydrogel can be prepared just before implantation or injection.
- the hydrogel can be prepared and stored in a pre-filled syringe in order to then be implanted or injected.
- the hydrogel may be prepared by rehydrating a lyophilisate just prior to implantation or injection, or implanted in dehydrated form.
- collagen sponges As Helistat ® (Integra LifeSciences, Plainsboro, New Jersey), the DBM (Demineralized Bone Matrix) alone or mixed with other organic materials such as polysaccharides, glycerol or gelatins such as Osteofil ® (Medtronic), Allomatrix ® (WRIGHT), Grafton ® (Osteotech), DBX ® (MTF / Synthes), Bioset ® (Regeneration Technologies), matrices made up of mineral phases like Vitoss ® (Orthivista), Osteoset ® (Wright) or the matrices like MasterGraft ® (Medtronic), Healos ® (Depuy Spine) CopiOs ®
- the system after formation of the coprecipitate consists of two phases, a liquid phase and a solid phase. [000241] In the following description when the concept of volume is used, it is the total volume comprising the two phases.
- the total amounts of the various proteins per unit volume are between 0.01 mg and 2 mg, preferably between 0.05 mg and 1.5 mg, and more preferably between 0, 1 mg and 1.5 mg per ml of suspension obtained.
- the total amounts of phosphates per unit volume are between 0.02 mmol and 0.5 mmol, preferably between 0.05 and 0.25 mmol per ml of suspension obtained.
- the total amounts of calcium per unit volume are between 0.01 mmol and 1 mmol, preferably between 0.05 and 1 mmol and more preferably between 0.1 mmol and 0.5 mmol, per unit of volume.
- the percentage of calcium ions in the solid phase is between
- the total amounts of polysaccharides per unit volume are between 1 and 100 mg, preferably between 2 and 40 mg per ml of suspension obtained.
- the percentage of polysaccharides in the solid phase is greater than 80% of the introduced polysaccharide.
- the basic amounts used correspond to about 0.1 to 2 equivalents relative to the protons provided by the phosphate ions.
- the quantities used in the starting compositions can be determined by calculation. This can be done for the various embodiments of the kits.
- the osteogenic growth factor doses will be between 0.01 mg and 20 mg, preferably between 0.05 mg and 8 mg, preferably between 0.1 mg and 4 mg, more preferably between 0.1 mg and 2 mg, while the commonly accepted doses in the literature are between 8 and 12 mg.
- the doses of angiogenic growth factor will be between 0.05 mg and 8 mg, preferably between 0.1 mg and 4 mg, more preferably between 0.1. mg and 2 mg.
- a kit comprising three flasks is produced, said flasks containing:
- the second bottle further contains a solution of sodium bicarbonate at a concentration between 0.05 and 0.8 M.
- the second and third vials additionally contain a solution of histidine at a concentration between 0.02 and 0.2 M.
- the third bottle further contains a proline solution at a concentration of between 0.05 and 0.3M.
- the solutions are added simultaneously or successively before implantation on a collagen sponge with a volume of between 15 and 30 ml.
- a solution of sodium bicarbonate at a concentration between 0.20 and 0.4 M is added to the mixture obtained.
- a histidine solution at a concentration of between 0.02 and 0.15 M is added to the mixture obtained.
- a solution of proline at a concentration of between 0.05 and 0.3M is added to the mixture obtained.
- the mixture comprising the coprecipitate according to the invention is then freeze-dried. At the time of implementation, it is rehydrated with injectable water and / or blood at about 35% of the initial volume.
- the invention also relates to the use of the compositions of the invention by implantation, for example, to fill bone defects, to perform vertebral fusions or maxillofacial repairs or for the treatment of bone fractures, in particular non-union type.
- the invention also relates to the use of the compositions of the invention by injection for the treatment of bone defects, in particular those caused by osteoporosis and for any other pathology that can be treated percutaneously.
- the invention also relates to the use of the compositions according to the invention as bone implants.
- the compositions may be used in combination with a prosthetic device of the type of vertebral prosthesis or vertebral fusion cage.
- the invention also relates to therapeutic and surgical methods using the compositions in bone reconstruction.
- the size of the matrix and the amount of osteogenic growth factor are a function of the volume of the site to be treated. [000275] Examples of the various embodiments of the invention are given below.
- kits are given for information only and are not limiting.
- Kit 1 A kit of 5 vials comprises a vial containing the lyophilized or in solution osteogenic protein, a vial containing a freeze-dried polymer or in solution, a vial containing a sodium salt, freeze-dried soluble calcium or in solution, a vial containing a soluble phosphate salt freeze-dried or in solution and a vial containing a freeze-dried or dissolved base.
- Kit 2 A kit of 4 vials comprises a vial containing the freeze-dried or solution-containing osteogenic protein, a vial containing a freeze-dried or dissolved polymer, a vial containing a freeze-dried soluble calcium salt or in solution and a vial containing a soluble phosphate salt freeze-dried or in solution.
- Kit 3 A kit of 4 vials comprises a vial containing the lyophilized or in solution osteogenic protein, a vial containing a polymer, a soluble phosphate salt which is freeze-dried or in solution, a vial containing a lyophilized or dissolved soluble calcium salt and a vial containing a lyophilized or solution base.
- a kit of 4 vials comprises a vial containing the lyophilized or in solution osteogenic protein, a vial containing a polymer, a soluble phosphate salt which is freeze-dried or in solution, a vial containing a lyophilized or dissolved soluble calcium salt and a vial containing a lyophilized or solution base.
- Kit 4 A kit of 4 vials comprises a vial containing lyophilized or in solution osteogenic protein, a vial containing a freeze-dried or dissolved polymer, a vial containing a soluble calcium salt and a lyophilized or in solution base and a vial containing a soluble phosphate salt freeze-dried or in solution.
- Kit 5 A kit of 4 vials comprises a vial containing the complex between the osteogenic protein and a lyophilized polymer or in solution, a vial containing a freeze-dried soluble calcium salt or in solution, a vial containing a soluble phosphate salt lyophilized or in solution and a vial containing a freeze-dried or dissolved base.
- Kit 6 A kit of 3 vials comprises a vial containing the lyophilized or in solution osteogenic protein, a vial containing a polymer and a soluble phosphate salt lyophilized or in solution, a vial containing a soluble calcium salt and a base freeze-dried or in solution.
- Kit 7 A kit of 3 vials comprises a vial containing the lyophilized or in solution osteogenic protein, a vial containing a polymer and a soluble phosphate salt lyophilized or in solution, a vial containing a freeze-dried soluble calcium salt or in solution.
- Example 8 Preparation of a kit containing 3 flasks
- Kit 8 A kit of 3 vials comprises a vial containing the complex between the osteogenic protein and a freeze-dried polymer or in solution, a vial containing a soluble phosphate salt lyophilized or in solution, a vial containing a soluble calcium salt and a lyophilized or in solution base.
- Kit 9 A kit of 3 vials comprises a vial containing the complex between the osteogenic protein and a freeze-dried polymer or in solution, a vial containing a soluble phosphate salt freeze-dried or in solution, a vial containing a soluble calcium salt freeze-dried or in solution.
- Kit 10 A kit of 2 vials comprises a vial containing the complex between the osteogenic protein and a freeze-dried polymer and a soluble phosphate salt which is lyophilized or in solution, a vial containing a freeze-dried soluble calcium salt or solution.
- Kit 11 A kit of 2 vials comprises a vial containing the complex between the osteogenic protein and a freeze-dried polymer and a soluble phosphate salt which is lyophilized or in solution, a vial containing a soluble calcium salt and a lyophilized or in solution base.
- the polymer 1 is a sodium dextranmethylcarboxylate modified with the sodium salt of L-tryptophan obtained from a dextran of average molar mass by weight of 40 kg / mol (Pharmacosmos) according to the process described in the application for FR07.02316 patent.
- the mole fraction of sodium methylcarboxylate, whether or not modified with tryptophan, is in formula III of the present application is 1.03.
- the molar fraction of tryptophan-modified sodium methylcarboxylates, p in formula III of the present application, is 0.36.
- the polymer 2 is a sodium dextranemethylcarboxylate modified with the octanoic ester of L-phenylalanine obtained from a dextran of average molar mass by weight of 40 kg / mol (Pharmacosmos) according to the process. described in patent application PCT / IB2009007054.
- the mole fraction of sodium methylcarboxylate, modified or not with the octanoic ester of L-phenylalanine, in the formula X of the present application is 1.11.
- the molar fraction of octanoic ester-modified sodium methylcarboxylates of L-phenylalanine, q in formula IX of the present application is 0.09.
- the polymer solution 2 at the end of production is 30.45 mg / ml.
- EXAMPLE 14 Preparation of an Octanol Glycinate Functionalized Dextran Polymer 3 is a L-glycine octanoic ester modified sodium dextranemethylcarboxylate obtained from a dextran of average molar mass by weight of 40 kg / mol (Pharmacosmos) according to the process described in the patent application FR08.05506.
- the mole fraction of sodium methylcarboxylate, whether or not modified by the octanoic ester of L-glycine, is in formula X of the present application is 1.09.
- the molar fraction of octanoic ester-modified sodium methylcarboxylates of L-glycine, q in formula IX of the present application is 0.22.
- Example IS Preparation of a Tryptophan Functional Dextran
- Polymer 4 is sodium dextranmethylcarboxylate modified with the sodium salt of L-tryptophan obtained from a weight average molar mass dextran of 70 kg / mol (Pharmacosmos) according to the process described in the patent application FR07.02316.
- the mole fraction of sodium methylcarboxylate, whether or not modified with tryptophan, is in formula III of the present application is 1.14.
- the mole fraction of tryptophan-modified sodium methylcarboxylates p in Formula III of the present application is 0.41.
- Example 16 Preparation of a Dextran Functionalized with Octanol Phenylalaninate
- Polymer 5 is an octanoic ester modified sodium dextranemethylcarboxylate of L-phenylalanine obtained from a dextran of average molar mass by weight of 40 kg / mol (Pharmacosmos) according to the process described in the patent application FR08.05506.
- the polymer 6 is a sodium dextranemethylcarboxylate modified with the dodecanoic ester of L-glycine obtained from a dextran of average molar mass by weight of 40 kg / mol (Pharmacosmos) according to the process described in the application FR08.05506.
- the molar fraction of sodium methylcarboxylate, whether or not modified with the L-glycine dodecanoic ester, in the formula X of the present application is 1.04.
- the molar fraction of sodium methylcarboxylate modified with the L-glycine dodecanoic ester in formula IX of the present application is 0.13.
- Example 18 Preparation of a Dextran Functionalized by the Tryptophan Ethyl Ester
- the polymer 7 is a sodium dextranemethylcarboxylate modified with the ethyl ester of L-tryptophan obtained from a dextran of average molar mass by weight 40 kg / mol (Pharmacosmos) according to the process described in the patent application FR07.02316.
- the mole fraction of sodium methylcarboxylate, whether or not modified with the ethyl ester of tryptophan, is in formula III of the present application is 1.09.
- the molar fraction of sodium methylcarboxylate modified with tryptophan ethyl ester, p in formula III of the present application is 0.47.
- Example 19 Preparation of a solution of a dextran functionalized with tryptophan [000297]
- a concentrated solution of polymer 1 is prepared by solubilizing 9.13 g of lyophilizate of polymer 1 (water content of about 25%) in 35.24 g of water. The solution is stirred for 30 minutes. The concentration of polymer 1 is 162.9 mg / g determined by dry extract. The density is 1.08. The concentration of polymer 1 is therefore 175.9 mg / ml.
- a solution of polymer 2 at 40 mg / g is prepared by solubilizing 3.12 g of polymer lyophilizate 2 (water content of 14%) in 64 g of water.
- Example 22 rhBMP-2 solution in 1 mM HCI buffer
- 1L of InFUSE buffer is prepared by solubilizing in a 1L volumetric flask filled with 800 ml of water 5 g of sucrose, 25 g of glycine, 3.72 g of glutamic acid, 0.11 g of sodium chloride and 0.11 g of polysorbate 80. The pH of this solution is then adjusted to 4.5 by adding 16.8 ml of 1N sodium hydroxide. The volumetric flask is finally filled to the line to obtain the InFUSE buffer. 1 ml of a solution of rhBMP-2 at 1.5 mg / ml in InFUSE buffer is prepared by adding 1 ml of 1.5 mg lyophilized rhBMP-2 buffer. This solution is incubated for two hours at 4 ° C. and sterile filtered through 0.22 ⁇ m. [000303] This solution can also be freeze-dried.
- Example 24 rhBMP-7 solution in 10 mM HCI buffer
- a solution of rhBMP-7 at 3.8 mg / ml is prepared by adding 1 ml of a 1 mM HCl solution to 3.8 mg lyophilized rhBMP-7. The pH of this solution is 2.2. This solution is incubated for 15 minutes at room temperature and is sterile filtered through 0.22 ⁇ m.
- Example 25 RhBMP-7 solution in 5% lactose buffer pH 3.5
- a solution of rhBMP-7 at 3.8 mg / ml is prepared by adding 7.8 ml of a 5% lactose solution whose pH has been fixed at 3.5 by addition of HCl 1. M at 30.3 mg lyophilized rhBMP-7. The pH of this solution is 3.5. This solution is incubated for 15 minutes at room temperature and is sterile filtered through 0.22 ⁇ m.
- Example 26 rhGDF-5 solution in 10 mM HCl buffer
- 1 ml of a solution of rhGDF-5 at 1.5 mg / ml is prepared by adding 1 ml of a 10 mM HCl solution to 1.5 mg lyophilized rhGDF-5. This solution is incubated for two hours at 4 ° C. and sterile filtered through 0.22 ⁇ m.
- Examples of the preparation of soluble phosphate salt solutions are given for information only and are not limiting.
- a 1M sodium phosphate solution is prepared in a volumetric flask from an equimolar mixture of anhydrous sodium hydrogenphosphate and sodium dihydrogenphosphate (Sigma). This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m. More dilute solutions of sodium phosphate are prepared from the stock solution described above.
- Solution 1 A 2M solution of calcium chloride is prepared in a volumetric flask from anhydrous calcium chloride or dihydrate (Sigma). This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 29 0.75M Calcium Chloride Solution
- Solution 2 A solution of 0.75M calcium chloride is prepared by dilution from the 2M calcium chloride solution described in the example previous. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Solution 3 A solution of 0.75 M calcium acetate is prepared in a volumetric flask from calcium acetate (Sigma). This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 31 0.75M Calcium Gluconate Solution
- Solution 4 A solution of calcium gluconate 0.75 M is prepared in a volumetric flask from calcium gluconate (Sigma). This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 32 Histidine solution at 1M [000316]
- Solution 5 A solution of histidine at 1M is prepared in a 1L volumetric flask by solubilizing 155.2 g of L-histidine (Sigma) in the volume of deionized water needed to reach the mark. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 33 2 M Proline Solution [000317]
- Solution 6 A 2 M solution of proline is prepared in a 1 L volumetric flask by adding 230.2 g of L-proline (Sigma), 200 ml of 10 N sodium hydroxide. and the volume of deionized water required to reach the mark. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 34 2 M serine solution
- Solution 7 A 2 M serine solution is prepared in a 1 L volumetric flask by adding 210.2 g of L-serine (Sigma), 200 ml of 10 N sodium hydroxide and the volume of deionized water required for to reach the mark of gauge. This solution is incubated for 30 minutes at room temperature and sterile filtered through
- Solution 8 A 2 M glycine solution is prepared in a 1 L volumetric flask by adding 150.1 g of L-glycine (Sigma), 200 ml of 10 N sodium hydroxide and the volume of deionized water required for to reach the mark of gauge. This solution is incubated for 30 minutes at room temperature and sterile filtered through
- Solution 9 A solution of alanine at 2M is prepared in a 1L volumetric flask by adding 178.2 g of L-alanine (Sigma), 200 mL of 10N sodium hydroxide and the volume of deionized water required for to reach the mark of gauge. This solution is incubated for 30 minutes at room temperature and sterile filtered through
- Example 37 2M Lysine Solution [000321]
- Solution 10 A solution of 2M lysine is prepared in a 1L volumetric flask by adding 292.4 g of L-lysine (Sigma), 200 mL of 10N sodium hydroxide. and the volume of deionized water required to reach the mark. This solution is incubated for 30 minutes at room temperature and sterile filtered through
- Example 38 Sodium hydrogen carbonate solution
- a solution of 1.2 M sodium hydrogen carbonate is prepared in a volumetric flask from anhydrous sodium hydrogen carbonate (Sigma). This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- a solution of 0.5 M tris (hydroxymethyl) aminomethane is prepared in a volumetric flask from ultrapure tris (hydroxymethyl) aminomethane.
- Example 40 Solution Comprising Polymer 1 and Sodium Phosphate at pH 6.5
- Solution 11 A solution comprising polymer 1 at 40 mg / mL and 0.45 M phosphate is prepared by mixing 8.6 mL of the polymer solution 1 at 175.9 mg / mL described in FIG. Example 15, 17 mL of the solution
- Example 27 1 M sodium phosphate described in Example 27 and 11.9 mL water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 41 Solution Comprising Polymer 1 and Sodium Phosphate
- Solution 12 A solution comprising polymer 1 at 40 mg / mL and 0.23M sodium phosphate is prepared by mixing 5.5 mL of polymer solution 1 at 175.9 mg / g described. in Example 15, 5.5 mL of the 1M sodium phosphate solution described in Example 27 and 13.0 mL of sterile water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 42 Solution Comprising Polymer 2 and Sodium Phosphate at pH 6.5
- Solution 13 A solution comprising Polymer 2 at 20 mg / mL and 0.45M phosphate is prepared by mixing 10 mL of the Polymer solution 2 at 40 mg / g described in Example 20, 9 ml of the 1 M sodium phosphate solution described in Example 27 and 1 ml of water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 43 Solution comprising polymer 1, sodium phosphate and hydrogen carbonate
- Solution 14 A solution comprising polymer 1 at 40 mg / mL, 0.23M sodium phosphate and 0.31M sodium hydrogen carbonate is prepared by mixing 5.5 mL of the polymer solution 1 to 175.9 mg / g described in Example 15, 5.5 mL of the 1 M sodium phosphate solution described in Example 27, 12.4 mL of a solution of 0.6 M sodium hydrogen carbonate obtained by diluting the stock solution described in Example 38 and 0.6 ml of sterile water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 44 Solution Comprising Polymer 1, Sodium Phosphate and Histidine Solution 15: A solution comprising Polymer 1 at 40 mg / ml, 0.23 M sodium phosphate and histidine to 0.09 M is prepared by mixing 5.5 ml of the 175.9 mg / g polymer solution 1 described in Example 15 with 5.5 ml of the 1 M sodium phosphate solution described in Example 27, 10.8 mL of a 0.2 M histidine solution obtained by diluting the stock solution described in Example 32 and 2.2 mL of sterile water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 45 Solution Comprising Polymer 2, Sodium Phosphate and Hydrogen Carbonate Solution 16: A solution comprising Polymer 2 at 10 mg / ml, 0.23 M sodium phosphate and hydrogencarbonate 0.31 M sodium is prepared by mixing 3.45 mL of the 30.45 mg / mL polymer solution 2 described in Example 13 with 2.0 mL of the 1.2 M phosphate solution. sodium salt obtained according to Example 27, 2.7 ml of a 1.2 M sodium hydrogen carbonate solution described in Example 38 and 2.4 ml of sterile water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 46 Solution Comprising Polymer S, Sodium Phosphate and Bicarbonate
- Solution 17 A solution comprising Polymer 5 at 20 mg / mL, 0.23M sodium phosphate and hydrogencarbonate 0.31 M sodium is prepared by mixing 1.3 mL of the 36.87 mg / mL polymer solution described in Example 16 with 0.45 mL of the 1.2 M phosphate solution. of sodium obtained according to Example 27 and 0.6 ml of a solution of 1.2 M sodium hydrogen carbonate described in Example 38. This solution is incubated for 30 minutes at room temperature and sterile filtered on 0.22 ⁇ m.
- Example 47 Solution Comprising Polymer 6, Sodium Phosphate and Hydrogen Carbonate Solution 18: A solution comprising Polymer 6 at 20 mg / ml, 0.23 M sodium phosphate and hydrogencarbonate 0.31 M sodium is prepared by mixing 1.0 mL of the 46.7 mg / mL polymer solution 6 described in Example 17 with 0.45 mL of the 1.2 M phosphate solution. of sodium obtained according to Example 27, 0.6 ml of a 1.2 M sodium hydrogen carbonate solution described in Example 38 and 0.3 ml of sterile water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 48 Solution comprising polymer 7, sodium phosphate and hydrogen carbonate
- Solution 19 A solution comprising Polymer 7 at 40 mg / ml, 0.23 M sodium phosphate and 0.31 M sodium hydrogen carbonate is prepared by mixing 1.26 ml of the 7 to 75.9 mg / ml polymer solution described in Example 18, 0.45 ml of the 1.2 M sodium phosphate solution obtained according to Example 27, 0.6 ml of a solution 1.2 M sodium hydrogen carbonate described in Example 38 and 0.06 mL of sterile water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Solution 20 22 ⁇ l of a solution of rhBMP-2 at 1.46 mg / ml are added to 267 ⁇ l of a solution of polymer 1 at 60.0 mg / ml and at 351 ⁇ l of sterile water .
- This solution of rhBMP-2 and polymer 1 is at pH 7.4. This solution is incubated for two hours at 4 ° C. and sterile filtered through 0.22 ⁇ m.
- Solution 21 50 ⁇ l of a solution of rhBMP-7 at 1.5 mg / ml is mixed with 100 ⁇ l of a polymer solution 1 at 60.6 mg / ml. This solution of rhBMP-7 and polymer 1 is at pH 7.4. This solution is incubated for two hours at 4 ° C. and sterile filtered through 0.22 ⁇ m.
- Solution 22 50 ⁇ l of a rhBMP-7 solution at 0.15 mg / ml is mixed with 100 ⁇ l of a polymer solution 2 at 22.7 mg / ml. This solution of rhBMP-7 and polymer 2 is at pH 7.4. This solution is incubated for two hours at 4 ° C. and sterile filtered through 0.22 ⁇ m.
- Solution 23 50 ⁇ l of a solution of rhGDF-5 at 1.5 mg / ml is mixed with 100 ⁇ l of a polymer solution 2 at 22.7 mg / ml. This solution of rhGDF-5 and polymer 2 is at pH 7.4. This solution is incubated for two hours at 4 ° C. and sterile filtered through 0.22 ⁇ m.
- Example 53 Preparation of a RhBMP-2 / Polymer 1 Complex in the Presence of Sodium Phosphate
- Solution 24 184.0 mg of freeze-dried rhBMP-2 in InFUSE buffer containing only 7.85 mg of rhBMP-2 are taken up in 19 ml of the solution described in Example 41. The solution is left to incubate two hours at 4 ° C. The solution obtained is clear and is sterile filtered through 0.22 ⁇ m.
- Example 54 Preparation of rhBMP-2 / Polymer 1 Complex in the Presence of Sodium Phosphate and Sodium Bicarbonate Solution 25: 165.5 mg of rhBMP-2 lyophilizate in InFUSE buffer containing only 6, 95 mg of rhBMP-2 are taken up in 17.1 ml of the solution described in Example 43. The solution is incubated for two hours at 4 ° C. The solution obtained is clear and is sterile filtered through 0.22 ⁇ m.
- Example 55 Preparation of a rhBMP-2 / Polymer 1 Complex in the Presence of Sodium Phosphate and Histidine [000343] Solution 26: 165.5 mg of lyophilisate of rhBMP-2 in the Buffer
- InFUSE containing only 6.95 mg rhBMP-2 are taken up in 17.1 mL of the solution described in Example 44. The solution is incubated for two hours at 4 ° C. The solution obtained is clear and is sterile filtered through 0.22 ⁇ m.
- Example 56 Preparation of rhBMP-2 / Polymer 1 Complex in the Presence of Sodium Phosphate and Sodium Bicarbonate Solution 27: 1.98 mL of a solution of rhBMP-2 at 1.55 mg / ml mL in InFuse buffer is added to 3.5 mL of Polymer Solution 1 at 174.7 mg / g. Then, 9.6 mL of a solution containing 0.74 M sodium phosphate and 1.2 M sodium hydrogen carbonate and 0.28 mL of sterile water are also added. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m. The composition of the mixture is 0.2 mg / ml rhBMP-2, 40 mg / ml polymer 1, 0.45 M sodium phosphate and 0.75 M sodium hydrogen carbonate.
- Example 57 Preparation of rhBMP-7 / Polymer 1 Complex in the Presence of Sodium Phosphate and Sodium Bicarbonate Solution 28: 1.71 mL of a solution of rhBMP-7 at 3.69 mg / ml mL in 10 mM HCl buffer are added to 3.4 mL of the polymer solution 1 at 175.9 mg / g described in Example 15. Then, 3.3 mL of the 1 M sodium phosphate solution described in Example 27 and 7.5 mL of a 0.6M sodium hydrogen carbonate solution obtained by diluting the stock solution described in Example 38 and 14.1 mL of sterile water are added.
- composition of the mixture is 0.2 mg / mL in rhBMP-7, 20 mg / mL in polymer 1, 0.11 M sodium phosphate and 0.15 M sodium hydrogen carbonate.
- Example 58 Preparation of a rhBMP-2 / Polymer 2 Complex in the Presence of Sodium Phosphate and Sodium Bicarbonate Solution 29: 65.2 mg of a lyophilizate of rhBMP-2 in the InFuse buffer are taken up with 10.5 ml of Solution 16. This solution is incubated for 1 hour at room temperature and is sterile filtered through 0.22 ⁇ m. The composition of the mixture is 0.4 mg / ml rhBMP-2, 10 mg / ml polymer 2, 0.23 M sodium phosphate and 0.31 M sodium hydrogen carbonate.
- Example 59 Preparation of a rhBMP-2 / Polymer 5 Complex in the Presence of Sodium Phosphate and Sodium Bicarbonate Solution 30: 25.7 mg of a lyophilizate of rhBMP-2 in the InFuse buffer are taken up with 2.4 ml of Solution 17. This solution is incubated for 1 hour at room temperature and is sterile filtered through 0.22 ⁇ m. The composition of the mixture is 1.5 mg / ml rhBMP-2, 20 mg / ml polymer 5, 0.23 M sodium phosphate and 0.31 M sodium hydrogen carbonate.
- Example 60 Preparation of a rhBMP-2 / Polymer 6 Complex in the Presence of Sodium Phosphate and Sodium Bicarbonate Solution 31: 24.8 mg of a lyophilizate of rhBMP-2 in the InFuse buffer are taken up with 2.4 ml of Solution 18. This solution is incubated for 1 hour at room temperature and is sterile filtered through 0.22 ⁇ m. The composition of the mixture is 1.5 mg / ml rhBMP-2, 20 mg / ml polymer 6, 0.23 M sodium phosphate and 0.31 M sodium hydrogen carbonate.
- Example 61 Preparation of a rhBMP-2 / Polymer 7 Complex in the Presence of Sodium Phosphate and Sodium Bicarbonate Solution 32: 25.6 mg of a lyophilizate of rhBMP-2 in the InFuse buffer are taken up with 2.4 ml of Solution 19. This solution is incubated for 1 hour at room temperature and is sterile filtered through 0.22 ⁇ m. The composition of the mixture is 1.5 mg / ml rhBMP-2, 40 mg / ml polymer 7, 0.23 M sodium phosphate and 0.31 M sodium hydrogen carbonate. [000350] Examples of preparation of solutions comprising a soluble calcium salt and a base are given for information only and not limiting.
- Example 62 Calcium chloride and histidine solution
- Solution 33 A solution containing 0.75 M calcium chloride and 0.4 M histidine is prepared by adding 112.5 ml of a 2M solution of calcium chloride, 120 mL of 1M histidine solution and 67.5 mL of deionized water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 63 Solution of calcium chloride and proline Solution 34: A solution containing 0.75 M calcium chloride and 0.75 M proline is prepared by adding 112.5 ml of a solution of calcium chloride to 2M, 112.5 mL of a 2M proline solution and 75 mL of deionized water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 64 Solution of calcium chloride and glycine
- Solution 35 A solution containing 0.75M calcium chloride and 0.75M glycine is prepared by adding 112.5 mL of a 2M calcium chloride solution, 112.5 mL of a 2 M glycine solution and 75 ml of deionized water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 65 Solution of calcium chloride and alanine Solution 36: A solution containing 0.75 M calcium chloride and 0.75 M alanine is prepared by adding 112.5 ml of a 2M calcium chloride solution, 112.5 mL of a 2M alanine solution and 75 mL of deionized water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 66 Solution of Calcium Chloride and Lysine [000355]
- Solution 37 A solution containing 0.75 M calcium chloride and 0.75 M lysine is prepared by adding 112.5 ml of a solution of 2 M calcium chloride, 112.5 mL of a 2M lysine solution and 75 mL of deionized water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m.
- Example 67 Solution of Calcium Chloride and Serine Solution 38: A solution containing 0.75 M calcium chloride and 0.75 M serine is prepared by adding 112.5 ml of a solution of 2 M calcium chloride, 112.5 mL of a 2M serine solution and 75 mL of deionized water. This solution is incubated for 30 minutes at room temperature and sterile filtered through 0.22 ⁇ m. [000357] Examples of preparation of injectable suspensions comprising a BMP, a polymer, a soluble calcium salt, a soluble phosphate salt and / or a base are given for information and not limitation.
- Example 68 Preparation of an injectable suspension of a rhBMP-2 / Polymer 2 complex in the presence of calcium chloride, sodium phosphate and hydrogencarbonate
- An osteogenic suspension based on a coprecipitation of rhBMP-2 / Polymer 2 complex and calcium phosphate particles was obtained by mixing 400 ⁇ l of Solution 29 containing rhBMP-2 at 0.4 mg / ml. or 160 ⁇ g of rhBMP-2, Polymer 2 at 10 mg / ml, ie 4 mg of polymer 2, sodium phosphate at 0.23 M, ie 92 ⁇ mol, and sodium hydrogencarbonate at 0.31. M, ie 124 .mu.mol, and 400 .mu.l of a solution of calcium chloride at 0.38 M, ie 153 .mu.mol. The suspension obtained is stored for 15 minutes at room temperature before injection. This suspension is injectable with 27-gauge needles.
- Example 69 Preparation of an injectable suspension of a rhBMP-2 / Polymer 1 complex in the presence of calcium chloride, sodium phosphate and hydrogencarbonate [000359]
- An osteogenic suspension based on a coprecipitation of the BMP-2 complex Polymer 1 and calcium phosphate particles were obtained by mixing 1250 ⁇ l of a solution containing BMP-2 at 0.52 mg / ml, ie 650 ⁇ g of BMP-2, and Polymer 1 at 20 mg / ml.
- Implant 1 40 ⁇ l of Solution 20 are introduced into a sterile 200 mm3 crosslinked collagen sponge. The solution is allowed to incubate for 30 minutes in the collagen sponge before adding 10 .mu.l of a solution of calcium chloride at a concentration of 1.64 M. Finally, 90 .mu.l of a neutralized sodium phosphate solution at a concentration of 0.053 M obtained by mixing 80 .mu.l of sodium phosphate (22.5 mg / ml) and 10 .mu.l of 1N hydrochloric acid are added to the sponge. The sponge is then frozen and sterilized lyophilized. The dose of rhBMP-2 in the sponge is 2 ⁇ g.
- EXAMPLE 71 Preparation of Collagen Sponge Implants / RhBMP-2 Complex / Polymer 1 in the Presence of Lyophilized Calcium Chloride and Sodium Phosphate Implant 2: 40 ⁇ l of Solution 20 are introduced into a cross-linked collagen sponge of 200 mm3 sterile. The solution is incubated for 30 minutes in the collagen sponge before adding 10 ⁇ l of a solution of calcium chloride at a concentration of 6.85 M. Finally, 90 ⁇ l of a neutralized sodium phosphate solution at a concentration of 0.22 M obtained by mixing 80 ⁇ l of sodium phosphate (93.8 mg / ml) and 10 ⁇ l of 1 N hydrochloric acid are added to the sponge. The sponge is then frozen and sterilized lyophilized. The dose of rhBMP-2 is 2 ⁇ g.
- Example 72 Preparation of collagen sponge / BMP-2 complex / Polymer 1 implants in the presence of freeze-dried calcium chloride and sodium ascorbate
- Implant 3 40 ⁇ l of the Solution 20 are introduced into a crosslinked collagen sponge 200 mm3 sterile. The solution is incubated for 30 minutes in the collagen sponge before adding 10 .mu.l of a solution of calcium chloride at a concentration of 1.64 mg / ml. Finally, 80 ⁇ l of sodium ascorbate solution at a concentration of 0.41 M are added to the sponge. The sponge is then frozen and sterilized lyophilized. The dose of rhBMP-2 is 2 ⁇ g.
- Example 73 Preparation of collagen sponge implants / rhBMP-2 complex / Polymer 1 in the presence of freeze-dried calcium chloride and sodium phosphate
- Implant 4 Osteogenic implants based on a coprecipitation of rhBMP-2 / Polymer 1 complex and calcium phosphate particles were obtained from a cross-linked collagen sponge of dimensions 5.02 ⁇ 2.54 x 0.35 cm, a sponge volume of 4.52 ml_.
- Implant 5 Osteogenic implants based on a coprecipitation of rhBMP-2 / Polymer 1 complex and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, a sponge volume of 4.52 mL.
- Implant 6 Osteogenic implants based on a coprecipitation of rhBMP-2 / Polymer 1 complex and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, a sponge volume of 4.52 mL.
- Implant 7 Osteogenic implants based on a coprecipitation of rhBMP-2 / Polymer 4 complex and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, ie a sponge volume of 4.52 ml_. On this sponge are added 2 ml of a 0.040 mg / ml solution of rhBMP-2, ie 80 ⁇ g of rhBMP-2, at 8 mg / ml of Polymer 4, or 16 mg, and at 0.18 M of sodium phosphate at pH 7.4, ie 360 ⁇ mol, then 500 ⁇ L of a solution of calcium chloride at 1.2 M, ie
- Implant 8 Osteogenic implants based on coprecipitation of rhBMP-2 / Polymer 4 complex and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, a sponge volume of 4.52 mL.
- Example 78 Preparation of Collagen Sponge Implants / rhBMP-2 Complex / Polymer 4 in the Presence of Calcium Chloride and Sodium Phosphate
- Implant 9 Osteogenic Implants Based on Coprecipitation of rhBMP-2 / Polymer 4 Complex and Particles Calcium phosphate was obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, ie a volume of sponge of 4.52 ml.
- Implant 10 Osteogenic implants based on a coprecipitation of rhBMP-2 / Polymer 4 complex and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, ie a sponge volume of 4.52 ml_. On this sponge are added 1060 ⁇ l of a 0.311 mg / ml solution of rhBMP-2, ie 330 ⁇ g of rhBMP-2, at 62.3 mg / ml of Polymer 4, ie 66 mg and 0.34 M sodium phosphate pH 7.4 is 360 ⁇ mol, and finally 540 .mu.l of a solution of 1.7 M calcium chloride, or 920 micromol.
- Example 80 Preparation of collagen sponge / rhBMP-2 complex / Polymer 1 implants in the presence of lyophilized calcium chloride and sodium phosphate
- Implant 11 An osteogenic implant based on a precipitation of the rhBMP-2 / Polymer complex 1 and calcium phosphate particles was obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, ie a sponge volume of 4.52 ml. 1500 ⁇ l of a 0.107 mg / ml solution of rhBMP-2, ie 160 ⁇ g of rhBMP-2, at 21.3 mg / ml of Polymer 1, or 32 mg, are added to this sponge, followed by 500 ⁇ l of a solution.
- the implant is then frozen at -80 ° C. and freeze-dried.
- the lyophilized sponge is soaked with 1 ml of autologous blood 30 min before implantation.
- Example 81 Preparation of collagen sponge / rhBMP-2 complex / Polymer 4 implants in the presence of calcium chloride, sodium phosphate and histidine [000373]
- Implant 12 Osteogenic implants based on coprecipitation of the rhBMP-complex 2 / Polymer 4 and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, ie a sponge volume of 4.52 ml.
- Implant 13 Osteogenic implants based on a coprecipitation of rhBMP-2 / Polymer 4 complex and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, a sponge volume of 4.52 mL.
- 800 ⁇ l of a 0.413 mg / ml solution of rhBMP-2, ie 330 ⁇ g of rhBMP-2, 20.65 mg / ml of Polymer 4 or 16.5 mg and 0, are added to this sponge; 24 M of sodium phosphate at pH 7.4, ie 192 ⁇ mol, and finally 800 ⁇ l of a 0.4 M solution of calcium chloride, ie 320 ⁇ mol and 0.4 M of histidine or 320 ⁇ mol.
- Example 83 Preparation of collagen sponge / rhBMP-2 complex / Polymer 1 implants in the presence of calcium chloride, sodium phosphate and hydrogencarbonate
- Implant 14 Osteogenic implants based on coprecipitation of the rhBMP-complex 2 / Polymer 1 and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, ie a sponge volume of 4.52 ml. On this sponge are added 800 ⁇ L of a 0.2 mg / mL solution of rhBMP-2, ie 160 ⁇ g of rhBMP-2, at 40 mg / mL of Polymer 1, or 32 mg, at 0.45M.
- sodium phosphate pH 7.4 is 360 ⁇ mol, and 0.75 M sodium hydrogen carbonate, 600 micromol, and finally 800 .mu.l of a 0.75 M solution of calcium chloride or 600 micromol.
- Example 84 Preparation of collagen sponge / rhBMP-2 / Polymer 1 complex implants in the presence of calcium chloride, sodium phosphate and hydrogencarbonate
- Implant 15 Osteogenic implants based on a coprecipitation of rhBMP-2 / Polymer 1 complex and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, a sponge volume of 4.52 mL. 800 ⁇ L of a solution containing BMP-2 at 0.2 mg / mL, ie 160 ⁇ g of rhBMP-2, Polymer 1 at 8 mg / mL or 6.4 mg, of the sodium phosphate at 0.45 M, ie 360 ⁇ mol, and 0.75 M sodium hydrogen carbonate, ie 600 ⁇ mol, and finally 800 ⁇ L of a solution of calcium chloride at 0.75 M, ie 600 ⁇ mol.
- Example 85 Preparation of collagen sponge / rhBMP-2 / Polymer 1 complex implants in the presence of calcium chloride, sodium phosphate and hydrogencarbonate
- Implant 16 Osteogenic implants based on coprecipitation of rhBMP-2 / Polymer 1 complex and calcium phosphate particles were obtained from a crosslinked collagen sponge of dimensions 5.02 x 2.54 x 0.35 cm, ie a sponge volume of 4.52 ml. On this sponge are added 800 ⁇ l of a solution containing BMP-2 at 0.2 mg / ml, ie 160 ⁇ g of rhBMP-2, Polymer 1 at 20.6 mg / ml or 16.5 mg. sodium phosphate at 0.24 M, ie 192 ⁇ mol, and sodium hydrogencarbonate at 0.75 M, ie 600 ⁇ mol, and finally 800 ⁇ l of a 0.4 M calcium chloride solution, that is 320 ⁇ mol.
- Example 86 Preparation of collagen sponge / rhBMP-7 / Polymer 1 complex implants in the presence of calcium chloride, sodium phosphate and hydrogencarbonate
- Implant 17 Osteogenic implants based on a coprecipitation of the BMP-7 / Polymer 1 complex and calcium phosphate particles were obtained after successive impregnations of a cylindrical cross-linked type I collagen sponge of 198 ⁇ l per 70 ⁇ l of a 0.071 mg / ml solution of BMP-7, ie 5 ⁇ g of BMP-7, at 31.3 mg / ml of Polymer 1, ie 1.5 mg of Polymer 1,
- Example 87 Preparation of collagen sponge / rhBMP-2 complex / Polymer 2 implants in the presence of calcium chloride, sodium phosphate and hydrogencarbonate Implant 18: Osteogenic implants based on coprecipitation of the rhBMP-complex 2 / Polymer 2 and calcium phosphate particles were obtained from a cross-linked collagen sponge with sponge volume of 2.25 mL.
- Example 88 Preparation of collagen sponge / rhBMP-7 complex / Polymer 3 implants in the presence of calcium chloride, sodium phosphate and hydrogencarbonate
- Implant 19 Osteogenic implants based on coprecipitation of the BMP-7 / Polymer 3 complex and calcium phosphate particles were obtained after successive impregnations of a cross-linked type-I collagen sponge with a volume of 4520 ⁇ l per 800 ⁇ l of a solution containing BMP-7 at 0.41 mg / ml, ie 330 ⁇ g of BMP-7 Polymer 3 at 17.5 mg / mL, ie 14 mg of Polymer 3, 0.45 M sodium phosphate, ie 360 ⁇ mol, then with 800 ⁇ L of a solution containing 0.4% calcium chloride. M, ie 648 ⁇ mol and proline at 0.61 M, ie 488 ⁇ mol. Each solution is left for 15 minutes in contact with the sponge after addition. After these times of impregnation, the sponge is ready for implantation.
- Example 89 Preparation of collagen sponge implants / rhGDF-5 complex / Polymer 2 in the presence of freeze-dried calcium chloride, sodium phosphate and histidine
- Implant 20 Osteogenic implants based on a coprecipitation of the complex GDF-5 / Polymer 2 and calcium phosphate particles were obtained after successive impregnations of a type-I collagen sponge crosslinked with a volume of 4520 ⁇ L per 1500 ⁇ L of a solution containing GDF-5 at 0.5 mg / mL, ie 750 ⁇ g of GDF-5, Polymer 2 at 20 mg / mL, ie 30 mg of Polymer 2, then 750 ⁇ L of a solution containing calcium chloride at 0.8 M, ie 600 ⁇ mol and histidine at 0.38 M, ie 285 ⁇ mol and finally with a solution containing sodium phosphate at 0.48 M, ie 360 ⁇ mol.
- CRM Compressive Resistant Matrix
- This material is a mixed matrix composed of bovine collagen type I and a calcium phosphate mineral phase composed of 15% hydroxyapatite and 85% beta-tricalcium phosphate marketed by Medtronic under the name MasterGraft Matrix.
- the volume of this matrix varies according to the application, 140 ⁇ L for an ectopic site application in the rat, 5 mL for a spinal fusion application in the rabbit.
- Example 90 Preparation of collagen sponge implants surrounding a CRM containing rhBMP-2 / Polymer 2 complex in the presence of calcium chloride, sodium phosphate and hydrogencarbonate Implant 21: Implant 16 is wrapped around a dry CRM volume
- Example 91 Preparation of CRM implants / rhBMP-2 complex / Polymer 2 in the presence of calcium chloride, sodium phosphate and hydrogencarbonate Implant 22: Osteogenic implants based on coprecipitation of the BMP-2 complex Polymer 2 and calcium phosphate particles were obtained after successive impregnations of a CRM of a volume of 140 ⁇ l per 35 ⁇ l of a 0.14 mg / ml solution of BMP-2, ie 5 ⁇ g of BMP-2. 2, at 14 mg / ml of Polymer 2, ie 0.5 mg of Polymer 2, at 0.23 M of sodium phosphate or 8 ⁇ mol, and at 0.31 M of sodium hydrogencarbonate or 11 ⁇ mol for 15 minutes. then with 35 ⁇ l of a 0.38 M solution of calcium chloride, ie 13 ⁇ mol for 15 minutes. CRMs are ready for implementation.
- Example 92 Preparation of CRM implants / rhG DF-S / Polymer 2 complex in the presence of freeze-dried calcium chloride, sodium phosphate and histidine
- Implant 23 Osteogenic implants based on a coprecipitation of the complex GDF-5 / Polymer 2 and calcium phosphate particles were obtained after successive impregnations of a CRM with a volume of 140 ⁇ L per 35 ⁇ L of a solution containing 0.86 mg / ml of GDF-5, ie 30 ⁇ g of GDF-5, at 14 mg / ml of Polymer 2, ie 0.5 mg of Polymer 2, at 0.23 M of sodium phosphate or 8 ⁇ mol for 15 minutes, then with 17.5 ⁇ l of a 0.34 M histidine solution, ie 6 ⁇ mol for 15 minutes and finally with 17.5 ⁇ l of a 0.74 M calcium chloride solution. or 13 ⁇ mol.
- the CRMs are then frozen at -80 ° C. and lyophilized. Freeze-dried CRMs are soaked with 45 ⁇ L of autologous blood 30 min before implantation.
- Example 93 Preparation of CRM implants / rhBMP-2 complex / Polymer 1 in the presence of calcium chloride, sodium phosphate and hydrogencarbonate Implant 24: Osteogenic implants based on coprecipitation of the BMP-2 complex Polymer 1 and calcium phosphate particles were obtained after successive impregnations of a CRM with a volume of 5.0 ml per 1250 ⁇ l of a 0.52 mg / ml solution of BMP-2 or 650 ⁇ g of BMP-2.
- Implant 25 40 .mu.l of a solution of rhBMP-2 at 0.5 mg / ml in a INFUSE-type buffer are sterilized in a sterile cross-linked collagen sponge of 200 mm.sup.3. The solution is left for 30 minutes in the collagen sponge before implantation. [000388] The dose of rhBMP-2 in implant 25 is 20 ⁇ g.
- Implant 26 40 ⁇ l of a solution of rhBMP-2 at 0.05 mg / ml in a INFUSE-type buffer are introduced sterile in a Helistat-type, 200 mm3, sterile collagen sponge (Integra LifeSciences, Plainsboro, New Jersey). The solution is left for 30 minutes in the collagen sponge before implantation. [000390] The dose of rhBMP-2 in implant 26 is 2 ⁇ g.
- Implant 27 Freeze-dried osteogenic implants based on BMP-7 were obtained after impregnation of a crosslinked type-I collagen sponge of 198 .mu.l per 140 .mu.l of a 0.036 mg / ml solution of BMP. -7 is 5 ⁇ g. The implants are then frozen at -80 ° C. and lyophilized. The lyophilized sponges are impregnated with 45 ⁇ L of autologous blood 30 min before implantation.
- Implant 28 Osteogenic implants were obtained by impregnation of a cross-linked type I collagen sponge of dimensions 5.02 ⁇ 2.54 ⁇ 0.35 cm, ie a volume of sponge of 4.52 mL per 1600 ⁇ L of a 1.45 mg / mL solution of rhBMP-2, ie 2.3 mg. The solution is left for 30 minutes in the collagen sponge before implantation.
- Counterexample S Preparation of collagen sponge implants containing 1.3 mg of rhBMP-2
- Implant 29 Osteogenic implants were obtained by impregnating a cross-linked type I collagen sponge of dimensions 5.02 ⁇ 2.54 ⁇ 0.35 cm, ie a sponge volume of 4.52 mL per 1600 ⁇ l_ of a solution to
- the objective of this study is to demonstrate the osteoinductive power of the different formulations in a model of ectopic bone formation in rats.
- Male rats of 150 to 250 g Male rats of 150 to 250 g (Sprague Dawley OFA - SD, Charles River Laboratories France, B.P. 109, 69592 ArbresIe) are used for this study.
- An analgesic treatment (buprenorphine, Temgesic®, Pfizer, France) is administered before the surgical procedure. Rats are anesthetized by inhalation of a 02 isoflurane (1-4%) mixture. The fur is removed by shaving over a wide dorsal area.
- the rats are then returned to their respective cages and kept under observation during their recovery. At 21 days, the animals are anesthetized by an injection of tiletamine-zolazepam (ZOLETIL®25-50 mg / kg, IM, VIRBAC, France).
- each of the explants is removed from its implantation site and macroscopic photographs are taken. The size and weight of the explants are then determined. Each explant is then stored in 10% buffered formalin solution.
- a dose of 20 ⁇ g of rhBMP-2 in a collagen sponge leads to obtaining ossified explants of 38 mg of average mass after 21 days.
- the objective of this study is to demonstrate the osteoinductive power of the various formulations in a posterolateral fusion model in rabbits.
- This study is conducted according to the experimental protocol described in the publication of JP Lawrence (Lawrence, JP et al., Spine 2007, 32 (11), 1206-1213) with the exception of nicotine treatment since the induction of a pseudarthrosis is not desired.
- Fusion of the vertebrae is evaluated by manual palpation of the explanted vertebral column.
- the lack of mobility between the vertebrae is synonymous with fusion.
- the spine is also analyzed by micro-CT at 12 weeks to assess the presence of bones in the vertebrae. The results obtained for the various implants are summarized in the following table.
- the implants containing the BMP-7 polymer complex co-precipitated with the calcium phosphate salt also lead to the fusion of the vertebrae for low doses of BMP-7, 0.33 mg of BMP-7 per implant.
- the results of the literature show that a 100% rabbit spinal fusion is not even at a dose of 3.5 mg of BMP-7, a dose much higher than that studied (Yao, G. et al., Spine 2008, 33 (18), 1935-1942).
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US11614408P | 2008-11-19 | 2008-11-19 | |
US21393909P | 2009-07-31 | 2009-07-31 | |
FR0903803A FR2948573B1 (fr) | 2009-07-31 | 2009-07-31 | Nouvelle forme d'administration de complexes de proteines osteogeniques |
PCT/FR2009/001332 WO2010058106A1 (fr) | 2008-11-19 | 2009-11-19 | Nouvelle forme d'administration de complexes de protéines ostéogéniques |
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CA (1) | CA2744150A1 (fr) |
FR (1) | FR2948573B1 (fr) |
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Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150079145A1 (en) * | 2006-12-14 | 2015-03-19 | DePuy Synthes Products, LLC | Protein stabilization formulations |
FR2948573B1 (fr) | 2009-07-31 | 2011-11-18 | Adocia | Nouvelle forme d'administration de complexes de proteines osteogeniques |
US9018190B2 (en) | 2009-03-27 | 2015-04-28 | Adocia | Functionalized oligosaccharides |
FR2943538B1 (fr) | 2009-03-27 | 2011-05-20 | Adocia | Formulation a action rapide d'insuline recombinante humaine |
FR2980796B1 (fr) * | 2011-09-30 | 2014-07-04 | Adocia | Oligosaccharides fonctionnalises |
FR2956116A1 (fr) | 2010-02-09 | 2011-08-12 | Adocia | Complexes polysaccharide/bmp-7 solubles a ph physiologique |
FR2958647B1 (fr) | 2010-04-08 | 2013-08-23 | Adocia | Polysaccharides comportant des groupes fonctionnels carboxyles substitues par un derive hydrophobe porte par un spacer au moins trivalent. |
WO2011098962A2 (fr) * | 2010-02-09 | 2011-08-18 | Adocia | Polysaccharides anioniques fonctionnalisés par au moins deux groupements hydrophobes portés par un spacer au moins trivalent |
WO2012029148A1 (fr) * | 2010-09-01 | 2012-03-08 | 株式会社オステオファーマ | Préparation cryodesséchée de protéine morphogénétique osseuse humaine recombinante 2 |
EP2828297A1 (fr) * | 2011-05-10 | 2015-01-28 | Adocia | Oligosaccharides fonctionnalisés |
US9089476B2 (en) * | 2011-08-10 | 2015-07-28 | Adocia | Injectable solution at pH 7 comprising at least one basal insulin whose PI is between 5.8 and 8.5 |
US20130231281A1 (en) | 2011-11-02 | 2013-09-05 | Adocia | Rapid acting insulin formulation comprising an oligosaccharide |
ES2670969T3 (es) | 2012-11-13 | 2018-06-04 | Adocia | Formulación de acción rápida de insulina que comprende un compuesto aniónico sustituido |
US8945872B2 (en) | 2013-01-25 | 2015-02-03 | Warsaw Orthopedic, Inc. | Methods of purifying human recombinant growth and differentiation factor-5 (rhGDF-5) protein |
US8956829B2 (en) | 2013-01-25 | 2015-02-17 | Warsaw Orthopedic, Inc. | Human recombinant growth and differentiaton factor-5 (rhGDF-5) |
US9051389B2 (en) | 2013-01-25 | 2015-06-09 | Warsaw Orthopedic, Inc. | Expression conditions and methods of human recombinant growth and differentiation factor-5 (rhGDF-5) |
US9169308B2 (en) | 2013-01-25 | 2015-10-27 | Warsaw Orthopedic, Inc. | Methods and compositions of human recombinant growth and differentiation factor-5 (rhGDF-5) isolated from inclusion bodies |
US9359417B2 (en) | 2013-01-25 | 2016-06-07 | Warsaw Orthopedic, Inc. | Cell cultures and methods of human recombinant growth and differentiaton factor-5 (rhGDF-5) |
KR102016745B1 (ko) * | 2013-02-01 | 2019-09-02 | 아이진 주식회사 | Bmp―7 및 부형제를 포함하는 흉터 형성의 감소 또는 억제용 조성물 |
CN103919733A (zh) * | 2014-04-11 | 2014-07-16 | 聂和民 | 一种包裹双生长因子的核壳结构微球及其用途 |
FR3020947B1 (fr) | 2014-05-14 | 2018-08-31 | Adocia | Composition aqueuse comprenant au moins une proteine et un agent solubilisant, sa preparation et ses utilisations |
US9795678B2 (en) | 2014-05-14 | 2017-10-24 | Adocia | Fast-acting insulin composition comprising a substituted anionic compound and a polyanionic compound |
WO2016035751A1 (fr) * | 2014-09-01 | 2016-03-10 | 国立大学法人九州大学 | Procédé de fabrication d'un composé inorganique et composé inorganique produit |
FR3025428A1 (fr) * | 2014-09-08 | 2016-03-11 | Adocia | Composition pharmaceutique stable comprenant du pdgf |
EP3040118A1 (fr) * | 2014-12-29 | 2016-07-06 | Galderma S.A. | Hydrogels de chondroïtine réticulée d'éther et leur utilisation pour des applications de tissu mou |
FR3043557B1 (fr) | 2015-11-16 | 2019-05-31 | Adocia | Composition a action rapide d'insuline comprenant un citrate substitue |
CA3015400A1 (fr) | 2016-02-23 | 2017-08-31 | Matripharm International Inc. | Composition a double vitesse de liberation et a forte charge medicamenteuse |
CN107596451B (zh) * | 2017-08-22 | 2020-11-20 | 东南大学 | 一种基于HA/CS/P(MVE-alt-MA)复合骨修复材料及其制备方法 |
CN113069591A (zh) * | 2021-03-29 | 2021-07-06 | 黄河三角洲京博化工研究院有限公司 | 一种壳聚糖-聚谷氨酸钙生物敷料及其制备方法 |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US563461A (en) | 1896-07-07 | Water elevator and carrier | ||
FR702316A (fr) | 1929-10-04 | 1931-04-04 | Bosch Robert | Cercle de commande destiné à être fixé sur le volant de direction de voitures |
FR805506A (fr) | 1936-04-27 | 1936-11-21 | Est Aciers Fins | Procédé de fabrication d'aciers fins |
FR854621A (fr) | 1938-09-29 | 1940-04-19 | Perfectionnements aux procédés de construction et aux briques employées avec ces procédés | |
US2387201A (en) | 1942-01-12 | 1945-10-16 | Bonneville Ltd | Mono-acyl ethylene diamines |
US4455256A (en) * | 1981-05-05 | 1984-06-19 | The Regents Of The University Of California | Bone morphogenetic protein |
WO1985001890A1 (fr) | 1983-10-26 | 1985-05-09 | Kanebo, Ltd. | Agent emulsifiant proteique, son procede de preparation et preparation cosmetique emulsifiee le contenant |
US5676976A (en) | 1995-05-19 | 1997-10-14 | Etex Corporation | Synthesis of reactive amorphous calcium phosphates |
US6656922B2 (en) | 1998-05-28 | 2003-12-02 | Mediplex Corporation, Korea | Oral delivery of macromolecules |
FR2794649B1 (fr) * | 1999-06-11 | 2003-04-11 | Solutions | Biomateriau a base d'un derive de dextrane insolubilise et d'un facteur de croissance, son procede de preparation et ses applications |
AU2002327007B2 (en) * | 2001-09-21 | 2005-10-20 | Stryker Corporation | Pore-forming agents for orthopedic cements |
PL1675608T3 (pl) * | 2003-09-12 | 2007-11-30 | Wyeth Corp | Stałe fosforanowo wapniowe pałeczki do wstrzyknięć dla dostarczania białek osteogennych |
FR2861396B1 (fr) | 2003-10-24 | 2005-12-16 | Commissariat Energie Atomique | Derives amphiphiles de cyclodextrines,leur procede de preparation et leurs utilisations |
US8895540B2 (en) * | 2003-11-26 | 2014-11-25 | DePuy Synthes Products, LLC | Local intraosseous administration of bone forming agents and anti-resorptive agents, and devices therefor |
US20070015701A1 (en) | 2005-06-01 | 2007-01-18 | Samuel Zalipsky | Macromolecular conjugates of bone morphogenetic protein-7 |
WO2007009477A1 (fr) * | 2005-07-21 | 2007-01-25 | Lisopharm Ag | Procede de production de particules d'hydroxyapatite, notamment de particules d'hydroxyapatite sous-nanodispersees dans une matrice |
FR2914305B1 (fr) | 2007-03-29 | 2009-07-03 | Proteins & Peptides Man | Dextran fonctionnalise par des amino-acides hydrophobes. |
CN100336825C (zh) * | 2005-12-20 | 2007-09-12 | 山东省医药生物技术研究中心 | 重组人成骨蛋白-1的制剂制备方法 |
RU2008144129A (ru) * | 2006-04-07 | 2010-05-20 | Адосиа (Fr) | Бифункционализованные полисахариды |
EP1891984A1 (fr) | 2006-08-24 | 2008-02-27 | Graftys | Ciment phosphocalcique apatitique macroporeux et résorbable |
FR2919188B1 (fr) * | 2007-07-27 | 2010-02-26 | Proteins & Peptides Man | Complexes entre un polymere amphiphile et une proteine osteogenique appartenant a la famille des bmps |
JP2011519292A (ja) * | 2008-04-14 | 2011-07-07 | アドシア | 成長因子/両親媒性ポリマー複合体、可溶性のカチオン塩及び有機支持体を含有する骨形成組成物 |
FR2933306B1 (fr) | 2008-07-07 | 2010-09-10 | Adocia | Composition osteogenique comprenant un complexe facteur de croissance polysaccharide anionique, un sel soluble de cation et une matrice organique |
FR2933304A1 (fr) * | 2008-07-07 | 2010-01-08 | Adocia | Composition synergique osteogenique |
FR2934999B1 (fr) | 2008-08-13 | 2011-07-29 | Adocia | Polysaccharides fonctionnalises par des derives du tryptophane |
FR2936800B1 (fr) | 2008-10-06 | 2010-12-31 | Adocia | Polysaccharide comportant des groupes fonctionnels carboxyles substitues par un derive d'alcool hydrophobe |
FR2948573B1 (fr) | 2009-07-31 | 2011-11-18 | Adocia | Nouvelle forme d'administration de complexes de proteines osteogeniques |
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- 2009-11-19 WO PCT/FR2009/001332 patent/WO2010058106A1/fr active Application Filing
- 2009-11-19 SG SG2011037108A patent/SG171388A1/en unknown
- 2009-11-19 KR KR1020117014109A patent/KR20110086752A/ko not_active Application Discontinuation
- 2009-11-19 AU AU2009317083A patent/AU2009317083A1/en not_active Abandoned
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- 2009-11-19 CN CN2009801546015A patent/CN102281868A/zh active Pending
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CA2744150A1 (fr) | 2010-05-27 |
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US20100166867A1 (en) | 2010-07-01 |
WO2010058106A1 (fr) | 2010-05-27 |
MX2011005275A (es) | 2011-06-24 |
RU2011124917A (ru) | 2012-12-27 |
FR2948573B1 (fr) | 2011-11-18 |
CN102281868A (zh) | 2011-12-14 |
AU2009317083A1 (en) | 2010-05-27 |
IL213001A0 (en) | 2011-07-31 |
FR2948573A1 (fr) | 2011-02-04 |
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