211results about How to "Improve anti-tumor efficacy" patented technology

The present invention concerns methods and compositions for the treatment of cancer and cancer cells using altered poxviruses, including a vaccinia virus that has been altered to generate a more effective therapeutic agent. Such poxviruses are engineered to be attenuated or weakened in their ability to affect normal cells. In some embodiments, methods and compositions involve poxviruses that possess mutations that result in poxviruses with diminished or eliminated capability to implement an antiviral response in a host. Poxviruses with these mutations in combination with other mutations can be employed for more effective treatment of cancer.

The invention discloses a method for simultaneous and efficient amplification of CD<3+>CD<56+>CIK cells and CD<3->CD<56+>NK cells. The method comprises the steps as follows: the concentration of separated PBMC (peripheral blood mononuclear cells) is adjusted by a serum-free medium containing autologous plasma, an Anti-CD16 antibody, IL-2 and IL-15 are added, and then the mixture is transferred into a T175 culture flask for culture; an Anti-CD3 antibody and an Anti-CD137 antibody are added; a serum-free medium containing the autologous plasma, IL-2 and IL-15 is supplemented every two days according to the cell growth condition; the cell concentration is controlled to be about 1.5*10<6>/ml; and after culture is performed for 14-21 days, large quantities of high-purity CD<3+>CD<56+>CIK cells and CD<3->CD<56+>NK cells can be obtained simultaneously, and the total cell quantity can reach an effective value of the cell quantity required for adoptive cellular immunotherapy clinically for tumor. The method for simultaneous and efficient amplification of the CD<3+>CD<56+>CIK cells and the CD<3->CD<56+>NK cells is simple, convenient, effective and high in cell killing activity.

Provided herein are peptidomimetic macrocycles and methods of using such macrocycles for the treatment of disease.

A compound Cu(DDC)2 with relatively high tumor-inhibiting activity can be used for treating cancers such as melanoma, breast cancer, lung cancer, liver cancer, and the like. The treatment effect is broad, and the compound has certain selective killing effect against tumor cells. The invention relates to an Cu(DDC)2 injection protein nano-particle preparation used for treating tumor, and a preparation method thereof. Therefore, problems of poor water-solubility and difficulty in intravenous administration of Cu(DDC)2 are solved. According to the invention, with an ultrasonic method, a high-pressure homogenization method, and a micro-jet method, the Cu(DDC)2 injection protein nano-particles are prepared. The Cu(DDC)2 protein nano-particles are prepared from the components that (Cu(DDC)2 + organic solvent) :(protein + water) = 1:2-1:30, wherein the specification of Cu(DDC)2 is 0.01-5mg/mL, the specification of protein is 0.05-25% (w/v), and a ratio of organic solvent to water is 1:2-1:30. Proteins such as human serum albumin (HSA), bovine serum albumin (BSA), hydrophobic protein, glycoprotein, and lipoprotein or polypeptide is adopted as a carrier and a stabilizer for coating medicine particles, such that the particles have good biocompatibility and high security. Cu(DDC)2 tumor-inhibiting treatment effect is improved, and adverse reaction is reduced.

The invention belongs to the technical field of biological pharmacy, and relates to a tumor targeting polypeptide-medicine coupling derivative, and a preparation method and application thereof. The tumor targeting polypeptide-medicine coupling derivative comprises targeting polypeptides, long effect polypeptides and medicine molecules, wherein the targeting polypeptides are connected onto the endC of the long effect polypeptides through flexible connecting peptides; fusion peptides are used as carriers of the medicine molecules; the medicine carriers and the long effect polypeptides in the fusion peptides are connected through chemical bonds; and the long effect polypeptides are polypeptide or protein structural domains having the affine mutual effects with human serum albumin. The tumortargeting polypeptide-medicine coupling derivative can be combined with the human serum albumin; the remaining half-life period in the blood circulation system can be obviously prolonged; the long-term effectiveness in the body is realized; the targeting and seepage into the tumor tissues or cells can be realized; then, free effect molecules are released in tumor tissue micro acid environments orin cells in through an acid hydrolysis mechanism; and a better anti-tumor efficiency is achieved.

The preparation provides a nano drug loading system, which is simple is a preparation method, mature in process, stable in property and good in biocompatibility. According to the nano drug loading system, nano particles are coupled to the surfaces of macrophages through maleic amide bonds; the tumor is jointly treated through the immune regulation function of macrophages and the functions of the nanoparticles, so that the anti-tumor curative effect is improved; the problem that in the prior art, drug micromolecules cannot be effectively enriched and targeted at tumor sites is solved, and the nano drug loading system has important application prospects in the nano medical field and the tumor treatment field.

The invention discloses a bionic nano-carrier as well as a preparation method and application thereof, and belongs to the technical field of pharmaceutical preparations. According to the bionic nano-carrier, cationic nanoparticles entrapping a chemotherapeutic drug serve as an inner core, and surfaces of the cationic nanoparticles are coated with a hybrid cell membrane composed of an immune cell membrane and a tumor cell membrane to serve as a shell. The bionic nano-carrier is high in targeting property and strong in uptake capacity, can enhance anti-tumor curative effect, provides a new thought for individualized and accurate treatment, and has relatively high clinical practical significance.

The invention provides a triphenylphosphine-stearic acid grafted chitosan drug-loading micelle. The triphenylphosphine-stearic acid grafted chitosan drug-loading micelle is prepared through a two-stepamide method as follows: grafting tetracarboxybutyl triphenylphosphine to stearic acid grafted chitosan to obtain triphenylphosphine-stearic acid grafted chitosan having a mitochondrion targeting function; and performing coating of an antitumor drug amycin through a dialysis method to obtain the mitochondrion-targeting triphenylphosphine-stearic acid grafted chitosan drug-loading micelle. The drug-loading micelle provided by the invention has an efficient mitochondrion targeting function, and the coated drug amycin can maximally reduce the leakage of the amycin in normal tissues and non-target parts, thereby reducing the toxic or side effect; and meanwhile, a large amount of amycin can be accurately delivered to tumor cell mitochondria in a targeting manner, so that the concentration of the amycin in the tumor cell mitochondria is increased, apoptosis of the tumor cells is induced, and the antitumor curative effect is greatly improved.

The invention discloses application of cyclic dinucleotide cGAMP to prevention and treatment of tumors through drug combination, belonging to the technical field of biological medicine. The invention also discloses a plurality of drug compositions for prevention and treatment of tumors. The drug compositions for prevention and treatment of tumors are composed of cyclic dinucleotide and one selected from a group consisting of fluorouracil, cyclophosphamide, methotrexate, cisplatin, carboplatin, paclitaxel, vincristine, mitomycin, gemcitabine and actinomycin. Results of in-vivo research show that the drug compositions composed of cyclic dinucleotide and one selected from a group consisting of fluorouracil, cyclophosphamide, methotrexate, cisplatin, carboplatin, paclitaxel, vincristine, mitomycin, gemcitabine and actinomycin have obviously improved curative effect and obviously decreased toxicity.

The invention discloses a docetaxel nanometer micelle, a preparation method and application of the micelle to prepare medicines for treating tumor or drug-resistant tumor. The docetaxel nanometer micelle comprises 1 part by weight of docetaxel, 10-100 parts by weight of a carrier material and 0-10 parts of oil, wherein the average particle size of the docetaxel nanometer micelle is 10-200 nm. According to the preparation, the water solubility of docetaxel is substantially improved, the stability of the preparation is improved, the cycling time of docetaxel in blood is prolonged, the toxic and side effects of conventional preparations are reduced, docetaxel nanometer micelle can be driven to be targeted to tumor tissue through EPR effect, so that the anti-tumor curative effect of docetaxel is improved, and the docetaxel nanometer micelle overcomes the multidrug resistance of tumor.

The present invention discloses a preparation method and uses of an anti-cancer drug estrogen targeting PEG-modified liposome. The liposome preparation method comprises: synthesizing estrone-pegylated phospholipid from activated estrone, taking 40-80 parts by weight of phospholipid, 5-45 parts by weight of cholesterol, and 5-40 parts by weight of pegylated phospholipid, dissolving in methanol, carrying out rotary evaporation, adding an ammonium sulfate aqueous solution, carrying out dialysis, adding 0.5-10 parts by weight of mitoxantrone, carrying out incubation, carrying out dialysis, adding 0.1-20 parts by weight of the estrone-pegylated phospholipid, carrying out incubation, and filtering with a membrane to obtain the liposome preparation. Compared with the liposome in the prior art, the obtained estrogen targeting PEG-modified liposome has characteristics of high encapsulation efficiency, uniform particle size, pharmacokinetics improving, anti-tumor efficacy enhancing, toxicity reducing, simple preparation process and easy scale-up production, and is expected to become the novel pharmaceutical preparation for cancer therapy. The uses are targeted treatments of breast cancer, leukemia and other cancers.

The present invention relates to Chinese medicine, and is especially one kind of tongue dropping medicine pill for diminishing inflammation and detoxicating. The tongue dropping medicine pill for diminishing inflammation and detoxicating is prepared with saffron, safflower, realgar, toad cake, frankincense and other 16 kinds of Chinese medicinal materials. The medicine of the present invention has the functions of clearing away heat, diminishing inflammation, cooling blood, detoxicating, eliminating swelling, etc. and has high clinical effective rate and low toxicity.

The invention discloses a multifunctional targeting drug delivery system with combined action of chemotherapy and phototherapy and a preparation method thereof. The method comprises the following steps: preparation of drug-loaded nanoparticles; synthesis of HA-NH2; synthesis of DOX-ss-HA-NH2; and preparation of a targeting drug delivery system Ce6@PDA-HA-ss-DOX. The multifunctional targeting drugdelivery system disclosed by the invention has good biocompatibility, biodegradability and low toxicity, and can respond to the biological characteristics of low pH environment, high glutathione concentration and high CD44 receptor expression of tumor cells to release drugs. The chemotherapy is carried out together with photothermal therapy and photodynamic therapy so as to obviously improve the killing effect on the tumor cells, and to provide a better treatment method for tumor.