110 results about "Imiquimod" patented technology

Novel compositions containing imiquimod which are suitable for use in the treatment of skin disorders are disclosed. The compositions comprise micronized imiquimod and pharmaceutically acceptable excipients.

Solutions of members of the imidazoquinoline family of drugs, such as imiquimod or an analog thereof, are made by combining the drug in a solvent system containing one or more non-aqueous solvents and a hydrogen bond forming compound, wherein the solvent system contains a low level of water.

The invention relates to a cationic phospholipid-polymer hybridized nanoparticle vaccine adjuvant of a common-carrier antigen, MPLA (Monophosphoryl Lipid A) and IMQ (Imiquimod) as well as a preparation method and application thereof. The vaccine adjuvant is characterized in that the IMQ as a TLR7 agonist is loaded on a hydrophobic core; the MPLA as a TLR4 agonist is loaded in a phopholipid layer;cationic phospholipid DOTAP (1,2-dioleoy-3-trimethylammonium-propane) in the phopholipid layer is used for adsorbing an antigen; the antigen is protected through hybridized nanoparticles, and the ingestion of the antigen by dendritic cells is improved; immune response after antigen stimulation is improved remarkably through the TLR agonist, and cross-presentation of the antigen is improved remarkably. The hybridized nanoparticles as the vaccine adjuvant can load the antigen and different types of TLR agonists simultaneously, can deliver the antigen through a plurality of immune paths, and promotes the DC activation and maturation. The cross-presentation level is raised, a strong and powerful T-cell killing effect is achieved, cell factor secretion is induced, a long-term memory T-cell reaction is generated, and higher prevention capability for tumors is achieved.

The invention relates to a preparation method of an ointment for treating infantile hemangioma. The preparation method comprises the following steps: adding timolol hydrogenmaleate, propranolole hydrochloride, tacrolimus, pingyangmycin, vitamin C, vitamin E and vitamin B12 to water according to certain mass ratio, heating to 30-85 DEG C of the temperature, adding a thickener, imiquimod and a wetting agent according to certain mass ratio after stirring and dissolving, and uniformly stirring, and preparing the ointment for treating the infantile hemangioma after cooling. The ointment for treating the infantile hemangioma is an external used medicine, particularly suitable for the infants inconvenient for taking medicines and injection.

Pharmaceutical formulations and methods for the topical or transdermal delivery of 1isobutyl-1H-imidazo[4,5-c]-quinolin-4-amine or 1-(2-methylpropyl)-1H-imidazo[4,5 c]quinolin-4-amine, i.e., imiquimod, to treat genital/perianal warts with shorter durations of therapy than currently prescribed for the commercially available Aldara® 5% imiquimod cream, as now approved by the U.S. Food & Drug Administration (“FDA”), are disclosed and described. More specifically, lower dosage strength imiquimod formulations to deliver an efficacious dose of imiquimod for treating genital/perianal warts with an acceptable safety profile and dosing regimens that are shorter and more convenient for patient use than the dosing regimen currently approved by the U.S. Food & Drug Administration (“FDA”) for Aldara® 5% imiquimod cream to treat genital/perianal warts are also disclosed and described.

The present invention relates to a method for preparing mature dendritic cells, having a significantly improved capacity for inducing a cancer-specific immune response; a pharmaceutical composition for preventing or treating a cancer or inhibiting cancer metastasis, containing the mature dendritic cells prepared by using the above method; and a pharmaceutical kit incorporating the mature dendritic cells and an imiquimod prepared by the above method. Accordingly, it is possible to prepare safe mature dendritic cells which significantly improves the induction capacity of the cancer-specific immune response and lowers toxicity. The mature dendritic cells are effective in preventing and treating cancer, and inhibiting metastasis. In parallel with administering the cancer-specific mature dendritic cells, the imiquimod used for preparing the pharmaceutical kit improves cancer immunotherapy and prevents or treats a cancer and inhibits cancer metastasis.

The invention relates to a compound immunological adjuvant comprising a water phase solution and an oil phase solution which are respectively prepared, wherein the water phase solution is a CpG water solution the concentration of which is 0.5 to 2.0mg/mL; the oil phase solution is an imiquimod white oil solution the concentration of which is 0.25 to 1.0mg/mL; and the volume ratio of the water phase solution to the oil phase solution is 1:6. The invention also relates to a vaccine prepared from one or more antigens selected from attenuated live full microorganisms, inactivated microorganisms, recombinant peptide and proteins, synthetic peptide and cracked microorganisms and the water phase solution and the oil phase solution in the compound immunological adjuvant according to the volume ratio of 1:1:6. By the compounding of imiquimod, CpG and a white oil component, the compound immunological adjuvant has an obvious synergistic effect and enhances the immunological activity reactions of Th1 and Th2, so that the activity of stimulated immunological cells is obviously enhanced.

The invention relates to imiquimod micro emulsion gels for local skin, at least comprising the following ingredients by mass percent: 0.1-2.5 percent of imiquimod, 1-24 percent of solvent, 1-16 percent of surface active agent, 1-12 percent of cosurfactant, 1-20 percent of gelatinizing agent and the remaining water; wherein the imiquimod is 1-isobutyl-1H-imidazole(4,5-C) quinoline-4-amine; the preparation method comprises the following steps: the imiquimod is dissolved in the solvent, the surface active agent and the cosurfactant are added in the solvent dissolved with the imiquimod, and the mixture is dispersed uniformly; water with [roper amount is added in the mixture to form micro emulsion; the gelatinizing agent is swelled by water, so as to prepare the solution with a certain concentration, the gelatinizing agent solution is dropped in the imiquimod micro emulsion dropwise, the stirring is carried out while the gelatinizing agent solution is dropped, the pH value is adjusted by adding triethanolamine, so as to prepare the imiquimod micro emulsion gels; the invention has the advantages that: the thorough dispersity of the micro emulsion to medicines, adhesiveness of gels to the skin and deformation flowability thereof under external force are concentrated, so as to lead the medicine to be applied to the affected part and cause the medicine to pass into internal body and reach target spot through the skin; the medicine effect can act on continuously.

The invention discloses application of a glutaminase inhibitor in preparation of a medicine for treating psoriasis. In-vitro cell experiments prove that the glutaminase inhibitor can inhibit keratinocyte metabolism glutamine, inhibit miR-31 induced up-regulated keratinocyte mitochondrial respiration, inhibit miR-31 induced mTOR pathway, reduce cell activity and promote cell apoptosis, and has an anti-inflammatory effect; animal experiments prove that the glutaminase inhibitor can be used for effectively treating imiquimod-induced mouse psoriasis-like pathology change, including remarkably reducing the Baker score of skin lesion, effectively reducing the epidermal hypertrophy degree, remarkably reducing the number of subepidermal capillaries, remarkably reducing the number of epidermal Ki67positive cells and reducing the expression of epidermal GLS. Therefore, the glutaminase inhibitor can be used for preparing the medicine for treating psoriasis.

The invention belongs to the technical field of pharmacy. According to the application of a protein tyrosine phosphatase SHP2 inhibitor SHP099 in preparation of the medicine for treating psoriasis, aiming at an imiquimod-induced mouse psoriasis-like disease model, the SHP099 can effectively improve epidermal thickening of mouse skin lesion tissues, inflammatory cell infiltration and the level of inflammatory factors in mouse serum. At the cellular level, the SHP099 can significantly reduce the release of inflammatory factors related to psoriasis.

The present invention describes pharmaceutical formulations and methods suitable for iontophoretic delivery of the formulations to a subject. The formulations comprise an immunomodulator, such as imiquimod, and optionally include various agents and excipients. The formulations can be used as a treatment for skin diseases and conditions such as actinic keratosis, basal cell carcinoma and genital warts. The short term iontophoretic delivery of the formulations results in the creation of a depot effect in the skin of the subject, allowing for a sustained delivery. The shortened delivery time minimizes local side effects at the application site.

This invention discloses an immunosuppressive cell-capturing material comprising a molded body that includes: a readily hydrolyzable condensation polymer having an amino group; a poorly hydrolyzable polymer coating the readily hydrolyzable condensation polymer; and a ligand-conjugated poorly hydrolyzable polymer coating the poorly hydrolyzable polymer, wherein the ligand is at least one selected from the group consisting of a NH₂ group, a secondary amino group, a tertiary amino group, a polyamine residue, a basic cyclic polypeptide residue, an aminoglycosidic compound residue, chloroquine, primaquine, mefloquine, imiquimod, and nystatin, and wherein the content of the amino group in the molded body is 150 μmol/g or less. The invention also discloses an immunosuppressive cell-capturing column filled with the capturing material.

The invention relates to a preparation method of an antiviral drug imiquimod, wherein the preparation method comprises the steps: (1) with 4-hydroxyquinoline as a starting material, nitrifying to obtain 3-nitro-4-hydroxyquinoline; (2) carrying out chlorination and amination on 3-nitro-4-hydroxyquinoline to obtain 3-nitro-4-isobutyl amine quinoline; (3) carrying out hydrogenation on 3-nitro-4-isobutyl amine quinoline to obtain 3-amino-4-isobutyl amine quinoline, and separating in a formate mode; (4) carrying out cyclization, oxidation and ammoniation on 3-amino-4-isobutyl amine quinoline, carrying out a reaction in a same reactor, and thus obtaining an imiquimod crude product; and (5) preparing a hydrochloride of imiquimod from the imiquimod crude product, purifying, and carrying out alkaline hydrolysis to obtain the high-purity imiquimod. In the method, the imiquimod is prepared from 4-hydroxyquinoline as the starting material, and the total yield can reach 55%; the method has the advantages of high yield, less reaction steps, less discharge of three wastes, mild and more complete reaction conditions, and simple and convenient operation, is suitable for industrialized production, and has relatively high practical value. The obtained product is more stable in quality, and the purity can reach more than 99.7%.

The present invention provides a process for preparing 4-amino-1-isobutyl-1H-imidazo[4,5-c]quinoline (Imiquimod) of formula (I). The process comprises heating 4-chloro-1-isobutyl-1H-imidazo[4,5-c]quinoline of formula (II) with formamide, and optionally with bubbling of gaseous ammonia to afford Imiquimod of formula (I). According to the present invention, by using this process and novel purification methods, essentially as described herein, highly pure Imiquimod is obtained.

The invention relates to an imiquimod vesicle gel and a preparation method for the same. The vesicle gel is obtained by preparing a vesicle suspension by using imiquimod and the nonionic surfactants of Brij, Span, Poloxamer and the like via self-assembly, then reacting with the mixed gel matrix of carbomer and povidone, and used for treating the diseases of exophytic genital warts, actinic keratosis, skin basal cancer, melanoma and the like via local application on the skin; and by adding povidone in the carbomer gel matrix, the in-vitro medicine release amount can be increased by 42.1%, thus being beneficial to promote the entrance of medicines in the skin to exert the functions. According to the imiquimod vesicle gel and the preparation method for the same disclosed by the invention, the intradermal retention volume of the medicines in 24 hours can be remarkably increased and is 2.1 times that of the commercially available emulsifiable pastes, and the dose of the medicines penetrating through the skin is reduced by 48.7%; and the equivalent intradermal retention volume can be achieved only by a half of the dose of the commercially available emulsifiable pastes, so that the effectiveness of the medicine effect of the medicated parts can be remarkably enhanced, the dose of the medicines entering in the body can be greatly reduced, and the toxic and side effects of the whole body can be reduced.

The invention relates to a climiqualine suspension and relative production, and relative medicine, as climiqualine gel. Wherein, it uses the mixture solvent of glycerin, alcohol and boracic acid solutions, to obtain stable and uniform climiqualine suspension, to make gel agent, etc.