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Preparation method and drug carrying method of escherichia coli outer membrane vesicle, and application of outer membrane vesicle in anti-tumor

The invention discloses a preparation method and a drug carrying method of an escherichia coli outer membrane vesicle, and application of the outer membrane vesicle in anti-tumor. The preparation method of the escherichia coli outer membrane vesicle comprises the following steps of culturing a culture medium using LB in vitro, culturing an escherichia coli BL21 strain, performing centrifugation, filtration and ultrafiltration treatment to obtain an upper layer culture solution free of escherichia coli, and finally centrifuging the upper layer culture solution by a supercentrifuge to prepare the escherichia coli outer membrane vesicle. The particle size of the prepared escherichia coli outer membrane vesicle is uniform, and is about 50nm. Usually, a bacterium outer membrane vesicle is low in yield and difficult in drug carrying. The invention excogitates a novel drug carrying method for the bacterium outer membrane vesicle, so that the carrying efficiency of an anti-tumor drug can be significantly improved; an inhibition effect on multiplication and invasion of a tumor cell is increased; and a good application prospect of the bacterium outer membrane vesicle serving as a novel non-virus drug carrier is presented.
Owner:ZHEJIANG UNIV

Preparation and application of triple artificial miRNA in restraining of VEGFRs

The invention discloses a triple artificial miRNA carrier in restraining of VEGFRs and a construction method and application thereof. According to the triple artificial miRNA carrier in restraining of VEGFRs, artificial miRNAs are constructed in a pcDNATM6.2-GW / miR carrier and targeted to three target genes, namely VEGFR1, VEGFR2 and VEGFR3, the three artificial miRNAs are connected in series to be connected to a skeleton carrier of psliencer4.1 to form the triple amiRNA carrier, and the triple amiRNA carrier exerts the effect of silencing the three genes, namely VEGFR1, VEGFR2 and VEGFR3 at the same time. The triple amiRNA reduces proliferation of pancreatic cancer cells, accelerates apoptosis, and reduces the capacity of cell migration and invasion; in a nude mouse pancreatic cancer transplanting model, the triple amiRNA-VEGFRs obviously reduces the growth speed of a tumor, achieves a synergistic effect with chemotherapy drugs, and is related to restraining of epithelium-mesenchyme conversion; the pancreas shape and the insulin and blood glucose level of peripheral blood are not influenced. In this way, the triple artificial miRNA in restraining of VEGFRs can be well applied to preparation of medicine for treating a pancreatic cancer and other malignant tumors with high expression VEGFRs.
Owner:AFFILIATED HOSPITAL OF NANTONG UNIV

Antiallergic gel nose-protecting medical supply and making method thereof

The invention relates to an antiallergic gel nose-protecting medical supply and a making method thereof. The nose-protecting medical supply consists of a nose-shading sheet, antiallergic gel and a natural antipathogenic microorganism biomaterial. The nose-shading sheet consists of a film and a filtering sheet. One surface of the film is sticky. The left side and the right side of the film are provided with a left wing part and a right wing part. One side of the film is provided with a plurality of incision lines. A protruding part is arranged in the center of the film. The filtering sheet is arranged at the position of the protruding part in the center of the film and is tilted upwardly. The film surface of the filtering sheet is smeared with antiallergic gel, while the nose surface of the filtering sheet is smeared with natural antipathogenic microorganism biomaterial. The antiallergic gel nose-protecting medical supply is disposable and decomposable and mist on glasses of a user is prevented. Medical biomaterial in the invention has no toxic or side effect, so the antiallergic gel nose-protecting medical supply is safe for children, pregnant women and drivers and is convenient to use. The antiallergic gel nose-protecting medical supply is made by a simple process, is appropriate in cost, and is environmentally-friendly during production.
Owner:武汉耦合医学科技有限责任公司

Application of total glucosides of paeonia in preparation of medicament for treating thyroid cancer and improving tumor radiotherapy synergy

ActiveCN110327389ASignificantly against thyroid cancerEnhance iodine uptakeAntineoplastic agentsPlant ingredientsCancer cellBULK ACTIVE INGREDIENT
The invention relates to new application of a traditional Chinese medicine, in particular to application of total glycoside of paeonia in preparation of a medicament for treating thyroid cancer and improving tumor radiotherapy synergy, and belongs to the technical field of traditional Chinese medicines. The invention relates to the application of total glycoside of paeonia in preparation of a medicament for treating thyroid cancer and improving tumor radiotherapy synergy. The total glucosides of paeonia can be used as an active ingredient, are added with pharmaceutically-acceptable pharmaceutical excipients or carriers, and are prepared into a preparation according to a method recorded in pharmacy. The total glycosides of paeonia of the invention can also be used as one of the active ingredients, also contain other medicines, are added with pharmaceutically-acceptable pharmaceutical excipients or carriers, and are prepared into a preparation according to the method recorded in pharmacy. Through research, the inventor discovers that: the total glucosides of paeonia have obvious functions of resisting thyroid cancer and enhancing iodine uptake of cancer cells, and can improve the sensitivity of radiotherapy, can be prepared into a medicament for treating thyroid cancer, and can be prepared into a medicament for improving tumor radiotherapy synergy.
Owner:ZHEJIANG CANCER HOSPITAL
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