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199 results about "Camptotheca" patented technology

Camptotheca (happy tree, cancer tree, or tree of life) is a genus of medium-sized deciduous trees growing to 20 metres (66 ft) tall, native to southern China and Tibet. The genus is usually included in the tupelo family Nyssaceae, but sometimes included (with the tupelos) in the dogwood family Cornaceae.

Preparation method of enzymatic cross-linking medicine carrying nano micelle

ActiveCN103705460AOvercome issues such as potential toxicity during cross-linkingSimple and fast operationOrganic active ingredientsPharmaceutical non-active ingredientsCross-linkPeroxidase
The invention relates to a preparation method of an enzymatic cross-linking medicine carrying nano micelle. The preparation method comprises the following steps: carrying out self-assembling to prepare a polymer micelle system by using a thermosensitive amphiphilic block copolymer, introducing a phenol group capable of generating cross-linking reaction into a thermosensitive block, catalyzing peroxidized hydroxide phenol group by Peroxidase to generate cross-linking reaction to obtain a nuclear crosslinking polymeric micelle, wherein the lowest critical micelle concentration is remarkably lower than that of nano micelle which is not cross-linked; when the micelle is prepared, adding adriamycin, taxol or camptotheca acuminate to prepare the enzymatic cross-linking medicine carrying nano micelle. The preparation method provided by the invention has the advantages that compared with conventional cross-linking methods, the preparation method has the advantages of safety, no toxicity, quick cross linking and the like, and is simple and convenient to operate, and has a good application prospect; the enzymatic cross-linking medicine carrying nano micelle has lower critical micelle concentration, so that the stability is improved, the circulating time of the micelle in blood can be prolonged and the efficiency that the micelle is endocytosed by tumor cells is increased, thereby further improving the bioavailability and the therapeutic effect of the medicine.
Owner:NANKAI UNIV

Method for increasing content of camptothecin through co-transformation of double genes of transcription factor ORCA3 (Octadecanoie-responsive Cantharanthus AP2-doman protein 3) and key enzyme G10H (Geraniol 10-hydroxylase)

InactiveCN102212550ASolve the problem of drug shortageIncrease the content of camptothecinVector-based foreign material introductionAngiosperms/flowering plantsFrame sequenceRhizobium rhizogenes
The invention discloses a method for increasing content of camptothecin in camptotheca hairy root in the technical field of biology. The method comprises the following steps of: cloning coding frame sequences of CrORCA3 and CrG10H genes from catharanthus roseus; constructing a plant bivalent high-efficiency expression vector including the genes; and genetically transforming the camptotheca into camptotheca hairy root genetically modified by CrORCA3 and CrG10H genes, by using the hair root agrobacterium-mediated technique. The camptothecin content in the obtained genetically-modified camptotheca hairy root is increased obviously. The content of the camptothecin is 5.4 times of the contrast. The content of hydroxycamptothecin is 2.3 times of the contract. The content of the hairy root camptothecin independently genetically-modified by CrORCA3 is increased by 1.5 times of the contract. The content of the hairy root camptothecin independently genetically-modified by CrG10H gene is not increased obviously. The invention provides a method for increasing content of the camptothecin in the camptotheca hairy root, thereby providing a novel method for producing the camptothecin and the hydroxycamptothecin as anti-cancer drugs of important clinical requirements.
Owner:SHANGHAI NORMAL UNIVERSITY

Pest-repelling and bacterium-inhibiting fertilizer prepared from Chinese herbal medicine extract

The invention provides a pest-repelling and bacterium-inhibiting fertilizer prepared from Chinese herbal medicine extract. The fertilizer is characterized in that the fertilizer comprises, by weight,50-230 parts of urea, 50-130 parts of monoammonium phosphate, 50-400 parts of potassium nitrate, 10-200 parts of mineral source potassium fulvate and 10-100 parts of the Chinese herbal medicine extract, the Chinese herbal medicine extract is prepared by mixing Chinese herbal medicines according to a certain ratio and extracting the obtained mixture, and the Chinese herbal medicines comprise tartary buckwheat, licorice root, Chinese Gall, kelp, Tamarix chinensis, seaweed, Figwortflower Picrorhiza Rhizome, Rhizoma Cibotii, fructus cnidii, neem seeds, anise, Areca catechu, pomegranate rind, RadixAucklandiae, Radix Asparagi, Sophora flavescens, Vietnamese Sophora Root, Chinese prickly ash, Kaempferia galanga L., Camptotheca acuminate, Radix Euphorbiae Ebractealatae, Rhizoma curcumae longae, Rhizoma Arisaematis, Cynanchum paniculatum, oysters, seashells, crab shells, shrimp shells, oyster shells, tangerine peel, orange peel and Herba Houttuyniae. The provided pest-repelling and bacterium-inhibiting fertilizer prepared from Chinese herbal medicine extract has no damages to crops, can supplement nutrients required for plant growth and efficiently repel pests and inhibit bacteria, and caneffectively solve the problems in the background art.
Owner:山东国正农业发展有限公司

External application traditional Chinese drug for treating psoriasis vulgaris

The invention provides an external application traditional Chinese drug for treating psoriasis vulgaris. The external application traditional Chinese drug is a agent prepared from the following raw materials, by weight, 5-9 parts of densefruit pittany root bark, 5-9 parts of japanese ampelopsis root tuber, 5-9 parts of lightyellow sophora root, 9-15 parts of fructus kochiae, 5-9 parts of pinellia, 2-5 parts of amur corktree bark, 3-9 parts of common cnidium fruit, 1-5 parts of alum, 6-9 parts of stiff silkworm, 2-4 parts of chaulmoogratree seed, 9-15 parts of dried alum, 6-12 parts of mirabilite, 10-30 parts of wild buckwheat rhizome, 1-4 parts of glaber herba sarcandrae inj, 3-9 parts of japanese pogodatree flower, 2-6 parts of kansu euphorbia root, 9-15 parts of sulphur, 6-9 parts of kaempferia galanga, 3-9 parts of pomegranata rind, 6-15 parts of common bletilla tuber, 3-9 parts of podophyllum, 3-9 parts of siberian cocklebur fruit, 6-12 parts of smoked plum, 9-15 parts of flatspine pricklyash, 6-9 parts of psoralea corylifolia, 3-9 parts of common camptotheca fruit, 9-15 parts of Chinese soapberry fruit, and 1-30 parts of Chinese azalea flower. According to the traditional Chinese drug preparation of the present invention, the traditional Chinese drug five element theory is adopted, the medicine is applied aiming at the symptoms according to the psoriasis vulgaris etiopathogenisis, and the external application traditional Chinese drug has effects of heat clearing, detoxification, blood activating, and collateral dredging, and is suitable for more than 99% psoriasis vulgaris patients.
Owner:党光永

Screening of new strain capable of producing camptothecin and method for preparing camptothecin

The invention discloses a new strain capable of producing camptothecin and a method for preparing camptothecin by using the same. The new strain capable of producing the camptothecin-Phomopsis sp. B29 is conserved in China General Microbiological Culture Collection Center (CGMCC) on July 14, 2010, and has a conservation number of CGMCC No. 3988. The camptothecin is indole alkaloid with antitumor activity and is extracted from Camptotheca acuminate-nyssaceae plant of China, and the camptothecin has good curative effect on malignant tumors such as colon cancer, ovarian cancer and the like. Direct extraction of the camptothecin from the Camptotheca acuminate causes vegetation deterioration, ecological unbalance and other problems, and a chemical synthesis method has the disadvantages of long route, low yield and high cost; and aiming at the problems, endophytic fungi are separated and purified from the bark and fruit of the Camptotheca acuminate, and the strain capable of producing the camptothecin is screened from the endophytic fungi and then is used for preparing the camptothecin through fermentation. The new strain provided by the invention can be taken as a new medicine source for producing the camptothecin; and the method for preparing the camptothecin by fermenting the new strain is convenient to operate and has the advantage of low cost.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Anticancer fragrance-increasing cigarette holder

The invention discloses an anticancer fragrance-increasing cigarette holder. A cigarette holder tube (2) and a suction nozzle (3) are of an integrated structure; one end of a cigarette insertion opening (1) is inserted into the outer end of the cigarette holder tube (2); both ends of the cigarette holder tube (2) are separated by a filtration net (4) to form a filtration region; and an anticancer fragrance-increasing composition for cigarettes is filled in the filtration region and contains the following components: 2 to 3 parts of taxus chinensis, 0.5 to 1 part of curcuma zedoary, 0.5 to 1 part of tears, 0.5 to 1 part of catharanthus roseus, 0.5 to 1 part of cephalotaxus fortunei, 0.5 to 1 part of disporum leschenaultianum, 0.5 to 1 part of rabdosia rubescens, 0.5 to 1 part of meadow saffron, 0.5 to 1 part of camptotheca acuminate, and 0.5 to 1 part of Java brucea. The anticancer fragrance-increasing cigarette holder facilitates the filling and exchange of the anticancer fragrance-increasing composition for cigarettes, so the harm from carcinogenic substances to human organs can be greatly reduced and the harm from smokes to the human bodies is reduced to the minimum; moreover, instead of damaging the original taste of the cigarette by simply absorbing a large amount of smoke, the anticancer fragrance-increasing cigarette holder makes the taste of the cigarettes more purer and easily accepted by adding a large quantity of plant spices.
Owner:吴中政

Pharmaceutical composite for curing colon cancer and preparing method thereof

The invention belongs to the medicine field, particularly relates to a pharmaceutical composite for curing colon cancer and a preparing method thereof. The technical problem solved by the invention is to provide a brand-new pharmaceutical composite for curing colon cancer and a preparation method thereof. The pharmaceutical composition comprises the following components: 5-11 parts of rucea javanica, 5-11 parts of common camptotheca fruit, 8-16 parts of semen coicis and/or sargentgloryvinestem, 8-16 parts of curcumaaromaticaSalisb, and 5-16 parts of gingseng and/or campanumaea pilosula. The pharmaceutical composition has efficacies of clearing away heat and toxic material, activating blood circulation, removing masses, benefiting vital energy and strengthening healthy energy and the like.Long-term clinic observation and series of experimental researches show that the pharmaceutical composition has good anti-cancer effect, especially has obvious curative effect. The parasitical composition mainly cures patients of colon cancer suffering from toxin and phlegm internal resistance and qi deficiency, has the symptoms of abdominal pain, fixed pain spot, unpalpable pain, abdominalmass, abdominal distention, acratia, anorexia, dark-purple tongue or tongue with blockage points or ecchymosises, white and greasy tongue coat, and pulse fine tart, and is used by patients of colon cancer or colon cancer postoperation dialectical species suffering from toxin and phlegm internal resistance and qi deficiency.
Owner:CHENGDU UNIV OF TRADITIONAL CHINESE MEDICINE

Separation and extraction method for camptothecine

InactiveCN101348488AEasy to harvestSolve the problem of seasonally limited supplyOrganic chemistryAntineoplastic agentsFiltrationDesorption
The invention relates to the natural active ingredient extraction field from plants, in particular to a method for separating and extracting camptothecin. The technological line of the invention is as follows: common camptotheca fruits and common camptotheca leaves are taken as materials, and the technological steps are as follows: crushing, leaching of dilute sodium hydroxide solution, acid precipitation and impurity removal of the leaching solution, micro-filtration, ultrafiltration, nanofiltration, column chromatography by macropore adsorbent resins, desorption by ethanol and condensation of a stripping liquid to an extractive, extraction by ethyl acetate and crystallization of a extraction liquid to obtain a coarse product of camptothecin,recrystallization of a mixing liquid of the ethyl acetate and the acetone to obtain refined products of camptothecin. The method for separating and extracting camptothecin of the invention can fully leach out active ingredients of materials by multiple leaching, and after the processes of micro-filtration, ultrafiltration, nanofiltration concentration, column chromatography by macropore adsorbent resins and multiple crystallization, the extraction rate of the invention is 70 to 80 percent against the content of active ingredient camptothecin of the materials, and the purity of products extracted is more than 98 percent.
Owner:桂林普兰德生物科技有限公司

Japan snakeroot strictosidine synthase gene and its coding protein and application

The invention discloses a Japan snakeroot strictosidine synthase gene, protein which is encoded by the Japan snakeroot strictosidine synthase gene and the use thereof. The Japan snakeroot strictosidine synthase gene which is provided by the invention has a nucleotide sequence or a homologous sequence which adds, replaces, inserts or losses one or a plurality of nucleotides or allele thereof and the nucleotide sequence which is derived from the Japan snakeroot strictosidine synthase gene, which are displayed in the SED ID No.1. The protein which is encoded by the gene has an amino acid sequence or the homologous sequence which adds, replaces, inserts or losses one or a plurality of amino acids, which is displayed in the SEQ ID No.2. The Japan snakeroot strictosidine synthase gene which is provided by the invention can increase the content of camptothecin which is an anticancer component in resource plants such as Japan snakeroot or camptotheca and the like through the genetic engineering technology and can be used in research and industrialization for increasing the content of the camptothecin through utilizing the transgenic technology, which is helpful for accelerating to solve the problem that the drug resources of the camptothecin are seriously scarce and has very good application prospect.
Owner:SHANGHAI NORMAL UNIVERSITY
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