WO2022144515A1 - Disaccharides destinés au traitement des maladies de l'os - Google Patents
Disaccharides destinés au traitement des maladies de l'os Download PDFInfo
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- WO2022144515A1 WO2022144515A1 PCT/FR2021/052408 FR2021052408W WO2022144515A1 WO 2022144515 A1 WO2022144515 A1 WO 2022144515A1 FR 2021052408 W FR2021052408 W FR 2021052408W WO 2022144515 A1 WO2022144515 A1 WO 2022144515A1
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- bone
- coch3
- compound
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- compounds
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H5/00—Compounds containing saccharide radicals in which the hetero bonds to oxygen have been replaced by the same number of hetero bonds to halogen, nitrogen, sulfur, selenium, or tellurium
- C07H5/04—Compounds containing saccharide radicals in which the hetero bonds to oxygen have been replaced by the same number of hetero bonds to halogen, nitrogen, sulfur, selenium, or tellurium to nitrogen
- C07H5/06—Aminosugars
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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
- A61K31/7016—Disaccharides, e.g. lactose, lactulose
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
- A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/02—Inorganic compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
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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
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
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- A—HUMAN NECESSITIES
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- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
- A61K9/0024—Solid, semi-solid or solidifying implants, which are implanted or injected in body tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
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- A—HUMAN NECESSITIES
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- A61P19/00—Drugs for skeletal disorders
- A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
- A61P19/10—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease for osteoporosis
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- A61P35/00—Antineoplastic agents
Definitions
- the present invention relates to disaccharide-like compounds which are capable of increasing the calcium production of pre-osteoblastic cells and which are therefore useful for the treatment of certain bone diseases.
- Bone fractures are frequent traumas and complications of bone consolidation, despite the operation performed by an orthopedist, constitute a medical problem. Indeed, bone union is not a constant phenomenon, there are indeed 10% of cases of fracture that will lead to bone non-union, and this in the absence of any particular risk factor. Conversely, in the event of a technical error (inadequate fixation, approximate control of rotation, particularly in diaphyseal fractures of the long bones), the risk of non-union is estimated at 50%. Between these two extremes, the risk of non-union depends on the presence of local and general factors and can reach 30%. Among these factors, osteoporosis, type I diabetes, alcohol... Fractures linked to osteoporosis affect 50% of women and 20% of men over 50. It is characterized by a deterioration in the quality and quantity of the bone, which markedly increases the risk of having fractures.
- the current reference treatment for bone defects is autograft.
- the bone piece is removed either from the spongy zone, or from the cortical or even cortical-cancellous zone. It allows the contribution of the mineral fraction, the protein fraction with its collagen and non-collagen matrix proteins. This cell pool is sufficient for the smooth running of the osteogenesis process in the filling site.
- the revascularization of a cancellous autograft in the cortical zone takes about fifteen days. Then, depending on the species, a period of one to six months is necessary for its complete integration.
- This graft has the advantage of being osteogenic, osteoinductive, osteoconductive.
- this technique has significant limitations, including painful and limited access to the graft site, large volumes to be harvested by the surgeon, and harvest site morbidity. It can result in transient lameness of intensity and duration variables. Since the quantity of autologous graft is limited, the surgeon can then graft either allogeneic tissue or bone substitute materials. These materials are osteoconductive and serve only as a passive support for bone repair.
- BMPs bone morphogenic proteins
- autologous concentrated bone marrow consists of introducing mesenchymal stem cells which are at the origin of osteocompetent cells. This technique is associated with minor morbidity while retaining a number of the properties of osteoinduction which are dependent on stem cell concentration. This solution remains restrictive due to the sampling step.
- BMPs As for the BMPs, they are introduced on biocompatible implantable supports. These are endogenous osteoinductive glycoproteins generally released by acidification of the bone matrix (resorption), or during a fracture. They will induce the local recruitment of mesenchymal cells and allow the triggering of the biological cascade leading to bone formation. They are also synthesized by synthetic biology and marketed as an active ingredient in the field of bone consolidation, under the names of Osigraft® (BMP7), Inductos® and Infuse® Bone Graft (BMP2) in combination with a treatment surgical. These medicinal products come in the form of a solution to be reconstituted (active ingredient + solvent), then to be introduced on a collagen support (type I bovine collagen).
- BMP7 Osigraft®
- BMP2 Inductos®
- BMP2 Infuse® Bone Graft
- This “soaked” matrix is positioned, during a fracture consolidation operation, by a surgeon on the fractured bone before wound closure.
- Marketing authorizations have been obtained thanks to randomized multicenter studies in humans, the analysis of which makes it possible to better assess the real effectiveness and indications of this type of product.
- the main studies have focused on open fractures of nailed legs, pseudarthroses of the long bones, spinal arthrodesis. Studies have also been carried out on osteonecrosis of the femoral head and thickening of the maxillary sinuses without obtaining official authorisations. Due to their adverse effects and the lack of good support manufacturing practice, the production of BMP2 and BMP7 was stopped in 2016 in Europe.
- a problem which the present invention proposes to solve is to provide compounds of the disaccharide type which can be used in the treatment of diseases related to a decrease in bone density and/or in surgical methods of treatment of bone defects or bone fractures.
- Another problem which the present invention proposes to solve is to provide compounds of the disaccharide type which are osteoinductive, that is to say they are capable of inducing the cascade of biological mechanisms resulting in the formation bone.
- Another object of the present invention is to provide compounds as mentioned above which allow faster regeneration of the bone.
- Another object of the present invention is to provide compounds as mentioned above which avoid the heterotopic formation of bone, that is to say the formation of bone in place of another tissue.
- Another object of the invention is to provide a kit allowing the treatment of a bone defect.
- the aforementioned compound is used as an insecticide.
- This document also indicates that the aforementioned compound can be used as a medicament due to its activity of inhibiting chitinases, which are known to be involved in the mechanisms of allergy and asthma.
- the pharmaceutically acceptable salts may be sodium, lithium or potassium salts, for example, of the aforementioned compounds.
- the pharmaceutical composition of the invention may thus contain at least one pharmaceutically acceptable salt, the said salt or salts being chosen independently of each other from sodium salts, potassium salts and lithium salts.
- the composition contains a sodium salt or several sodium salts.
- the composition of the invention comprises, as active ingredient, only one or more sodium salts.
- composition of the invention is in liquid form. It can thus be injected or used to impregnate a support.
- the excipient is not limited according to the invention, it can be chosen from distilled water, injectable aqueous solutions of sodium chloride, in particular aqueous solutions containing 9 g/L of sodium chloride.
- the pharmaceutical composition that the invention can be administered by injection, subcutaneously, intravenously, by injection into the bones, orally, by mucosal in particular sublingual or nasal. In particular, it can be used by injection directly into a bone defect.
- the inventors have demonstrated the appearance of the aforementioned first compound due to a rearrangement during the solvation of the second compound.
- the mixture contains 2/3 by mass of the aforementioned compound of formula
- the pharmaceutical composition of the invention may also, whatever its embodiment, comprise a calcium phosphate cement capable of being injected and of solidifying in the body of the patient, in particular in a bone or a bone defect of the patient or in a area of less dense bone.
- the present invention also relates to a kit comprising a biocompatible support, implantable in the body of a subject and at least one compound of formula (I) below: wherein R1 is selected from H, SOs', R2 is selected from H and COCH3 and R3 is selected from H, COCH3, benzyl, SOs' and the pharmaceutically acceptable salts of these compounds.
- a kit comprising a biocompatible support, implantable in the body of a subject and at least one compound of formula (I) below: wherein R1 is selected from H, SOs', R2 is selected from H and COCH3 and R3 is selected from H, COCH3, benzyl, SOs' and the pharmaceutically acceptable salts of these compounds.
- the inventors have indeed demonstrated that the compounds of the invention are capable of inducing the production of a bone mass on a support.
- the biocompatible support is advantageously a support capable of replacing bone material and/or osteoconductive (that is to say capable of being covered with bone material (bone)).
- said biocompatible support is advantageously chosen from porous biocompatible supports, in particular supports comprising or consisting of biodegradable polymer(s), in particular PLA, polyglycolic acid, poly(lactic acid-co -glycolic), collagen, polyglicolide, chitosan, polycaprolactone, supports comprising or consisting of ceramic(s), supports comprising or consisting of calcium phosphate, supports comprising or consisting of the mineral part of a bone.
- the biocompatible support comprises or consists of collagen.
- the support may be coated with at least one compound according to the invention or impregnated or coated with a pharmaceutical composition containing the compound defined above with reference to the kit of the invention.
- the compounds defined in a) and e) above are used in combination for the treatment of the pathologies mentioned above or in a surgical method as mentioned above.
- the propoxy substituent of the compound of formula (I) is in position a or B, as indicated by the wavy line in formula (I).
- the propoxy substituent of the compound of formula (I) is in position a, as illustrated below.
- a disease or pathology linked to a decrease in bone density designates, within the meaning of the present invention, a pathological condition generating as a symptom at least locally a decrease in bone density and a pathological condition resulting from the decrease in bone density, for example example a broken bone.
- Bone tumors and in particular cancerous bone tumors give rise to bone fragility, which can be treated by the compounds of the invention.
- a pathological fracture is defined as a fracture caused by a decrease in bone density.
- a bone defect is according to the present invention a zone of a bone which presents a deficit in bone matter; it may be a hole in the bone material or an area where the bone material is less dense.
- the bone material covers, within the meaning of the present invention, a connective tissue which has solidified or is in the process of solidifying.
- treatment includes preventive treatment and curative treatment.
- active principles indicate that the active compound or compounds concerned are present in an amount sufficient to obtain a pharmaceutical effect.
- Fig. 5 represents the quantity of calcium (in pg) produced by smooth muscle cells in the presence of DP2, the cells were treated under mineralizing conditions in the presence of DP2 5, 7.5, 10, 15, 30 and 50 pM;
- Fig. 6 represents the percentage of mineralization of the HOb cells obtained after 14 days of treatment under the mineralizing conditions in the presence of DP2R0 at 30 ⁇ M and BMP-2 100 ng/ml or their mixture
- Fig. 7 represents the percentage of mineralization obtained on HOb cells treated for 14 days under mineralizing conditions in the presence of: (7A) DP2R2 at 30 pM and (7B) DP2R2 or DP2' at 30 pM and (7C) DP2R2 labeled at 95% purity (DP2M95 30pM);
- the DP2' compound was extracted from the DP2-DP2' mixture that forms when the DP2 compound is dissolved in water.
- the DP2' compound was separated by preparative HPLC chromatography with water as the eluting solvent.
- the inventors have found that the kinetics of the DP2 ⁇ DP2' reaction is such that it is also possible to test the biological activity of the DP2 compound alone. After extraction of the compound DP2′ formed.
- the two compounds DP2 and DP2' may or may not coexist in water for a given duration.
- DP2, DP2R0, DP2R2, DP2K correspond to the compound n-propyl, 2-0-acetyl-aD-Glucopyranoside, 4-O-(2-acetamido-2-deoxy-[3-D-glucopyranosyl) of formula 1 next:
- RO, R2 and K nomenclatures refer to production batches of the DP2 molecule.
- the reference DP2' corresponds to the compound n-propyl, 3-0-acetyl-aD-Glucopyranoside, 4-O-(2-acetamido-2-deoxy-[3-D-glucopyranosyl) of formula 1' following:
- the reference DP2NA corresponds to the compound n-propyl, aD-Glucopyranoside, 4-0- (2-acetamido-2-deoxy-pD-glucopyranosyl) of formula 3 below:
- the reference DP2SNA corresponds to the compound n-propyl, 6-O-sulfo-a-D-
- Glucopyranoside 4-O-(2-acetamido-2-deoxy-[3-D-glucopyranosyl), monosodium salt and of the following formula 4:
- mouse pre-osteoblastic cell line (MC3T3-E1, ATCC) and human primary osteoblastic cells (HOb, Promocell) were used.
- Mouse pre-osteoblastic cells were cultured in 75 cm 2 flasks, containing 15 mL of a-MEM medium (M4526, SIGMA) and 10% fetal calf serum (FCS), containing 1% Penicilin/ Streptomycin and 1% glutamine.
- human HOb cells were cultured in 75 cm 2 flasks containing 15 mL of proliferation medium (Human Osteoblast Proliferation Medium, PromoCell). The cells are maintained in the oven at 37° C., with 5% CO2 and 90% humidity. The medium was changed every three days.
- the MC3T3-E1 cells were seeded in 6-well plates at 63,700 cells/well to be treated in order to extract the RNA or for the assay of the enzymatic activity of alkaline phosphatase and in 48-well plates for the calcium assay at 5250 cells/well.
- the HOb cells were seeded at 182,000 cells/well in 6-well plates for the extraction of RNA or for the assay of the enzymatic activity of alkaline phosphatase; at 15,000 cells/well in 48-well plates for calcium assay; at 10,000 cells/well in plates 48 wells for the MTT test or the WST-1 test and at 100,000 cells/well in 6-well plates for protein extraction or for fluorescence.
- MC3T3-E1 cells were treated with a-MEM medium containing 5% FCS to which 10 mM of p-glycerophosphate and 50 pg/mL of ascorbic acid were added.
- the HOb cells were treated with the "Osteoblast mineralization medium" (Promocell).
- DP2NA, DP2R0, DP2R2, DP2', BMP-2 or BMP-7 were added at different concentrations.
- the cells were treated with the respective media (500 ⁇ L per well of the 48-well plate and 2 mL per well of the 6-well plate).
- Calcification was also studied on human osteoblastic cells (HOb, PromoCell, Heidelberg, Germany). They are isolated from trabecular bone tissue of the femur. Following a 14-day treatment in mineralizing medium (PromoCell), on primary HOb cells, a significant increase in calcification was observed (see Fig.3), compared to the mineralizing condition, in the presence of DP2 at 15 pM ( 26 ⁇ 10%), at 30pM (40 ⁇ 15%) and DP2NA at 30pM (44 ⁇ 7%) and at 50pM (35 ⁇ 8%). An increase observed in the presence of DP2 at 50pM (8 ⁇ 17%) and DP2NA at 15pM (45 ⁇ 42%) but which is not significant because of the standard deviation.
- the service provider Roowin supplied a DP2 molecule named DP2R2 ( 2nd batch produced), hence the name DP2R0 used above to designate the DP2 produced by the LG2A laboratory (UPJV, Amiens).
- the pro-calcifying activity of this molecule was studied and the results are shown in FIG. 7A below (DP2R2: 159.03 ⁇ 18.719%).
- ALP is an enzyme synthesized by osteoblasts. It hydrolyses phosphoric esters that inhibit mineralization by releasing a hydroxyl group and a phosphate. Osteoblasts produce matrix vesicles, reservoirs of alkaline phosphatase and ions, which, when released into the extracellular environment, would initiate the mineralization of osteoid tissue by promoting local concentrations of calcium and phosphate ions.
- the cells were seeded in 6-well plates at 63700 cells/well for the MC3T3-E1 and at 182000 cells/well for the HOb.
- the assay was performed on a 48-well plate after 13 days of treatment for MC3T3-E1 cells and 7 days of treatment for HOb cells using the BioVision Alkaline Phosphatase activity colorimetric assay Kit (ALP Assay Buffer, pNPP tablets , Alkaline phosphatase enzyme, Stop Solution).
- a protein assay was performed to normalize the results of the ALP assay based on protein number.
- the colorimetric method with the PierceTM BCA Protein Assay Kit from thermofisher was used.
- 5mL tubes a standard range from a 2mg/mL albumin solution was prepared.
- 5 ⁇ l of the standard range and samples to be tested were distributed.
- 200 ⁇ l of the kit reagent was added to the wells. The reaction was incubated for 15 minutes at 56°C. The optical density was measured at 565nm to determine the amount of proteins.
- Alkaline phosphatase is an enzyme that plays an essential role in bone formation. During osteoblast differentiation, the expression of alkaline phosphatase by osteoblasts increases gradually with time. For this, the alkaline phosphatase enzymatic activity on MC3T3-E1 and HOb cells was studied.
- the ALP enzymatic activity was also confirmed in the presence of DP2R2 30pM (149.749%) compared to the mineralized medium alone (100%) (Fig.SC).
- cell viability was determined using the MTT (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide) assay.
- MTT 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide
- the HOb cells were seeded in 48-well plates (10,000 cells per well), two days after the cells were treated with 30 ⁇ M DP2 and the MTT test was carried out on D2, D4, D7 and D14 post-treatment.
- DMEM Dulbecco's Modified Eagle Medium
- 250 ⁇ l of the diluted MTT solution were added to each well and the plate was incubated at 37° C. with 5% CO2 for 1 hour.
- the amount of MTT reduced in formazan is proportional to living cells.
- the purple formazan crystals were dissolved in 220 ⁇ l of DMSO and after shaking to homogenize the coloration, the absorbance was measured at 560 nm (Envision, PerkinElmer). Cytotoxicity was assessed by comparing cell viability between the control group and the experimental group.
- DP2 The toxicity of DP2 was also studied by another cell viability test: WST-1 (a tetrazolium salt). HOb cells were seeded in 48-well plates (10,000 cells per well), two days later, the cells were treated with DP2 30
- WST-1 a tetrazolium salt
- Sprague-Dawley rats are provided by Janvier Labs (Le Genest-Saint-Isle, France) and housed in the PLATAN animal facility at UPJV. The rats were kept under a 12-hour day-night cycle, at a temperature of 22 ⁇ 2°C and 50% humidity. All rats had free access to water and food pellets, and rat weight changes were monitored.
- DP2 and BMP-2 were diluted in sterile saline and then mixed with the medium and placed in the cranial defect. For the support-only condition, the latter is mixed with sterile physiological saline.
- the rat was anesthetized by using IsoVet (isoflurane) in the mask (5% at induction and 2 to 3% at maintenance dose). After 5 min, a nociception test was performed by pinching the paw or tail of the animal to check the effectiveness of the anesthesia. At the workstation, shaving and disinfection with vetedine were then performed next to the incision. Local anesthesia was also performed with 7mg/kg of 2% lidocaine (20mg/mL) diluted to 5mg/ml.
- IsoVet isoflurane
- the incision of the skin with a 15 blade cold scalpel along the midline was performed followed by the detachment of the subcutaneous tissues. Then, the incision along the midline and the lifting and lateral displacement of the periosteum were made.
- two cranial lesions were made with a diameter of 5 mm on each side of the sagittal suture, spacing them as far apart as possible and without touching the superior sagittal sinus. Saline was used during the milling steps.
- the implantation of the support, depending on the batch, on the left side has been made; the right side, without support, served as a control to assess the effect of the lesion and the natural repair processes without the presence of support.
- the periosteum was put back in place and sutured with 7/0 skin suture.
- the skin was also put back in place and closed with 4/0 skin suture.
- the rat was injected with buprenorphine at a dose of 0.05mg/kg subcutaneously as an analgesic. After waking up, the rat was returned to its standard housing conditions, with 1 rat per cage. The animals were monitored daily and animal welfare monitoring was carried out.
- the MBCP+BMP-2 batch was observed to form heterotopic bone over time, this appears to be similar to what is observed as adverse effect of BMP-2. Additionally, the collagen+BMP-2 bundle does not form continuous bone repair between old bone and newly formed bone, which is not the case with the DP2 compound.
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Abstract
Description
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JP2023539766A JP2024509346A (ja) | 2020-12-30 | 2021-12-20 | 骨疾患を治療するための二糖類 |
US18/259,368 US20240083933A1 (en) | 2020-12-30 | 2021-12-20 | Disaccharides for treating bone diseases |
EP21852039.3A EP4271388A1 (fr) | 2020-12-30 | 2021-12-20 | Disaccharides destinés au traitement des maladies de l'os |
CA3203230A CA3203230A1 (fr) | 2020-12-30 | 2021-12-20 | Disaccharides destines au traitement des maladies de l'os |
CN202180088531.9A CN116744972A (zh) | 2020-12-30 | 2021-12-20 | 用于治疗骨疾病的二糖 |
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FR2014257A FR3118415A1 (fr) | 2020-12-30 | 2020-12-30 | Composition pharmaceutique contenant en tant qu’ingrédient actif au moins un composé de type disaccharide capable d’augmenter la production de calcium des cellules pré-ostéoblastiques –kit et composés associés |
FRFR2014257 | 2020-12-30 |
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WO2009098400A1 (fr) | 2007-11-28 | 2009-08-13 | Universite De Picardie Jules Verne | Composé du type disaccharide, composition contenant un tel composé et procédé de fabrication d'un tel composé |
EP2818172A1 (fr) * | 2012-02-22 | 2014-12-31 | Hyaluronan Research Institute, Inc. | Agent tlr4, agent d'homéostasie tissulaire, activateur du facteur de croissance des hépatocytes, agent de réparation tissulaire, et activateur de sirtuine ayant des fragments d'acide hyaluronique en tant que principes actifs associés |
WO2019118525A1 (fr) * | 2017-12-12 | 2019-06-20 | Academia Sinica | Octasaccharides et leurs utilisations |
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2020
- 2020-12-30 FR FR2014257A patent/FR3118415A1/fr active Pending
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- 2021-12-20 US US18/259,368 patent/US20240083933A1/en active Pending
- 2021-12-20 CN CN202180088531.9A patent/CN116744972A/zh active Pending
- 2021-12-20 WO PCT/FR2021/052408 patent/WO2022144515A1/fr active Application Filing
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WO2009098400A1 (fr) | 2007-11-28 | 2009-08-13 | Universite De Picardie Jules Verne | Composé du type disaccharide, composition contenant un tel composé et procédé de fabrication d'un tel composé |
EP2818172A1 (fr) * | 2012-02-22 | 2014-12-31 | Hyaluronan Research Institute, Inc. | Agent tlr4, agent d'homéostasie tissulaire, activateur du facteur de croissance des hépatocytes, agent de réparation tissulaire, et activateur de sirtuine ayant des fragments d'acide hyaluronique en tant que principes actifs associés |
WO2019118525A1 (fr) * | 2017-12-12 | 2019-06-20 | Academia Sinica | Octasaccharides et leurs utilisations |
Non-Patent Citations (1)
Title |
---|
DUSSOUY CHRISTOPHE ET AL: "Strong Aphicidal Activity of GlcNAc([beta]1->4)Glc Disaccharides: Synthesis, Physiological Effects, and Chitinase Inhibition", CHEMISTRY - A EUROPEAN JOURNAL, vol. 18, no. 32, 6 August 2012 (2012-08-06), pages 10021 - 10028, XP055832143, ISSN: 0947-6539, DOI: 10.1002/chem.201200887 * |
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CA3203230A1 (fr) | 2022-07-07 |
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