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56results about How to "Inhibit tumor metastasis" patented technology

Preparation and application of novel targeting peptide for specifically inhibiting tumor cell metastasis

InactiveCN103656666AImprove targeting propertiesReach the lethal effectPeptide/protein ingredientsPharmaceutical non-active ingredientsSide effectLymphatic Spread
The invention relates to preparation and application of a novel targeting peptide for specifically inhibiting tumor cell metastasis. The preparation method disclosed by the invention is technically characterized in that a polypeptide TMTP1-GG-D(KLAKLAK)2 which can simultaneously identify high metastasis potential tumor cells and inhibit tumor cell growth and metastasis is prepared, and antimicrobial peptides can be specifically transported into malignant tumor tissues and local metastasis through the polypeptide, so that the high metastasis potential tumor cells can be selectively killed, an obvious toxic or side effect is avoided, the tumor growth and metastasis are effectively inhibited, the polypeptide is expected to become a novel antitumor medicine, and the key defects in the conventional tumor molecule targeted therapy technology and practice can be overcome. The invention aims to provide the polypeptide which can simultaneously and specifically identify and restrict tumor cells with high metastasis potential tendency, so that the problems of large side effects, low specificity and the like existing in existing targeting medicines are solved, highly-efficient and specific tumor inhibiting and killing effects are expected to be achieved in clinical treatment, and the treatment aim of greatly killing the tumor cells in a targeted mode can be furthest achieved due to the novel polypeptide. In addition, the invention also can provide a novel design mode for subsequent other molecular therapy.
Owner:武汉市奥尼克斯基因技术有限公司

Beta-1,3/1,6-glucan, preparation method therefor, and application thereof in preparing immune enhancement and anti-tumor medicine and functional food

The present invention provide a beta-1,3/1,6-glucan, a preparation method therefor, and application thereof in preparing immune enhancement and anti-tumor medicine and functional food. The preparation method comprises: drying and milling antarctic brown algae; after degreasing, water extracting, calcium chloride precipitating and anion exchanging resin purification, obtaining glucan with a beta-1,3-glucose main chain and a beta-1,6-glucose branched chain, wherein a molecular weight thereof is between 5-50 kDa. The beta-glucan prepared by the present invention has an immune enhancement activity, which is indicated by swallow of neutral red by in vitro macrophages and an NO release promoting experiment, and has a tumor growth inhibiting effect and a tumor metastasis inhibiting effect which are indicated by an in vivo animal experiment. According to the present invention, beta-1,3/1,6-glucan is prepared by using the antarctic brown algae; is characterized in richness and readily availability of raw material sources, simple preparation process, high product purity, strong bioactivity and easiness for industrialization; and has a prospect of being developed into immune enhancement and anti-tumor medicine.
Owner:MARINE BIOMEDICAL RES INST OF QINGDAO CO LTD

Cassia twig and poria cocos pill formula for inhibiting tumor metastasis and preparation process

The invention relates to the technical field of cassia twig and poria cocos pills, and particularly discloses a cassia twig and poria cocos pill formula for inhibiting tumor metastasis and a preparation process. The formula of the cassia twig and poria cocos pill for inhibiting tumor metastasis comprises 70-100 parts of cassia twig powder, 85-105 parts of poria cocos powder, 18-25 parts of astragalus membranaceus powder, 22-28 parts of sculellaria barbata powder and 55-70 parts of refined honey. The preparation device comprises a machine base, a raw material mixing device, an extrusion pelleting device and a rolling dryer. According to the cassia twig and poria cocos pill disclosed by the invention, the cassia twig powder and the poria cocos powder are taken as main components, a proper amount of astragalus membranaceus powder and a proper amount of sculellaria barbata powder are added as auxiliary materials, and the prepared cassia twig and poria cocos pill has a certain effect of inhibiting tumor metastasis through the mutual compatibility effect of the main materials and the auxiliary materials; and meanwhile, the disclosed device can sequentially achieve the effects of quantitative feeding, material mixing, pelleting, drying and the like, the functions are diversified, and the whole device is compact in structure, small in occupied area and excellent in use effect in the aspect of preparation of the cassia twig and poria cocos pills.
Owner:NANYANG INST OF TECH

Method for preparing chitosan oligosaccharide by enzymolysis of supercritical carbon dioxide fluid

The invention provides a method for preparing chitosan oligosaccharide by enzymolysis of supercritical carbon dioxide fluid. The method comprises the following steps: grinding and spray-drying a chitosan solution to obtain pretreated chitosan powder; adding a sodium alginate solution in a glutaraldehyde solution, stirring at a room temperature, adding a chitosanase solution, stirring and crosslinking at a low temperature to obtain a sodium alginate hydrosol for immobilizing chitosanase, and carrying out ultrasonic activating treatment to obtain activated immobilized chitosanase; and adding pretreated chitosan in an ultra-high-pressure reaction kettle, adding the activated immobilized chitosanase, feeding carbon dioxide gas, pressurizing and heating to enable carbon dioxide to be in a supercritical state, keeping heating to an enzymolysis temperature, and carrying out enzymolysis to obtain the chitosan oligosaccharide. Micron chitosan powder and the chitosanase which is crosslinked andimmobilized to a sodium alginate hydrosol system are taken as raw materials, and with the aid of the supersolubility of the supercritical carbon dioxide fluid, the chitosan oligosaccharide which is simple and convenient to operate, high in efficiency and narrow in molecular weight is prepared.
Owner:ZHEJIANG OCEAN UNIV

Chinese herbal medicine for treating tumor

A Chinese herbal medicine for treating tumor comprises frankincense, myrrh, asarum, porcellio, azalea, strychnos alkaloids, scandent schefflera root, paniculate swallowwort, glabrous sarcandra herb, wooly datchmanspipe herb, unprocessed Radix Aconiti Kusnezoffii and unprocessed Semen Strychni which are added in the following proportion by weight part: 5-10 parts of frankincense, 5-10 parts of myrrh, 10 parts of asarum, 8-12 parts of porcellio, 1-3 pars of azalea, 1-2 parts of strychnos alkaloids, 50 parts of scandent schefflera root, 50 parts of paniculate swallowwort, 50 parts of glabrous sarcandra herb, 50 parts of wooly datchmanspipe herb, 10 parts of unprocessed Radix Aconiti Kusnezoffii and 8 parts of unprocessed Semen Strychni. The method for preparing the Chinese herbal medicine comprises the following steps: grinding frankincense, myrrh, asarum, porcellio, azalea, and strychnos alkaloids into powder; stewing scandent schefflera root, paniculate swallowwort, glabrous sarcandra herb, wooly datchmanspipe herb, unprocessed Radix Aconiti Kusnezoffii and unprocessed Semen Strychni into extract; and adding the medicinal powder into the stewed extract, stirring until uniformity appears, drying by using a heatable brick bed, grinding into 300 meshes of fine powder, and packaging with a capsule. The invention has the advantages that the medicine has no side effects, is not addictive, has no stimulative effects on digestive tract, and has the function of limiting tumor metastasis with low cost and easy production in large scale.
Owner:郑二虎

Nanoparticles of calcium carbonate-polydopamine coated drug-loaded bacterial outer membrane vesicles as well as preparation method and application of nanoparticles of calcium carbonate-polydopamine coated drug-loaded bacterial outer membrane vesicles

ActiveCN114288270AShield body toxicityLower immune resistanceMaterial nanotechnologyEnergy modified materialsEscherichia coliFreeze-drying
The invention discloses a preparation method of nanoparticles of calcium carbonate-polydopamine coated drug-loaded bacterial outer membrane vesicles, which comprises the following steps: (1) preparation of OMVs: carrying out continuous subculture on escherichia coli strains until the escherichia coli strains grow stably, then inducing activated escherichia coli in logarithmic phase by using an IPTG inducer to generate OMVs, and carrying out freeze drying on the OMVs to obtain the nanoparticles of the drug-loaded bacterial outer membrane vesicles; (2) preparing OMVs (Ti): forming the OMVs (Ti) from the OMVs separated in the step (1) and a fat-soluble TGF-beta inhibitor through a membrane fusion method under an ice-water bath ultrasonic condition; and (3) preparing CaCO3-PDA-OMVs (Ti): adding the OMVs (Ti), CaCl22H2O, Na2CO3 and dopamine into a Tris-HCl (0.25 mM)-HEPES (25mM) buffer solution, and preparing by a one-pot method. The drug-loaded nanoparticles prepared by the invention have the advantages of no toxicity, high-efficiency delivery of inhibitors, activation of autoimmunity and the like.
Owner:SUN YAT SEN UNIV SHENZHEN
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