350results about How to "High proliferation rate" patented technology

The invention provides methods for predicting an increased risk or probability of developing endometriosis in a patient based upon the patient's KRAS variant status.

The invention relates to a ginseng adventitious root induced proliferation method, which comprises the following steps: cutting ginseng tissue culture seedlings into small tissue blocks and then inoculating into a solid induced culture medium for inducing to form adventitious roots, cutting the adventitious roots into small adventitious root blocks and then inoculating into a liquid proliferation culture medium for performing proliferation culture of the adventitious roots, wherein the solid induced culture medium and the liquid proliferation culture medium take 1/2 MS(-N) culture medium as basic culture mediums and contain 1-10mg/L indolebutyric acid. By utilizing the method provided by the invention, the quantity of the adventitious roots obtained through induction can be obviously increased, the adventitious roots obtained through induction are subjected to proliferation culture, and compared with the method for performing adventitious root induction by utilizing callus tissues, the proliferation rate of the adventitious roots is higher, and the proliferation effect is better.

The current invention provides monocytic cells transfected with chimeric antigen receptor (CAR) to selectively home to tumors and upon homing differentiate into dendritic cells capable of activating immunity which is inhibitory to said tumor. In one embodiment of the invention, monocytic cells are transfected with a construct encoding an antigen binding domain, a transcellular or structural domain, and an intracellular signaling domain. In one specific aspect of the invention, the antigen binding domain interacts with sufficient affinity to a tumor antigen, capable of triggering said intracellular domain to induce an activation signal to induce monocyte differentiation into DC.

The invention discloses a tissue culture propagation method for anoectochilus roxburghii, and relates to a tissue culture method for plants. The invention provides a tissue culture propagation method for anoectochilus roxburghii, through which the rapid propagation and growth of stem sections of anoectochilus roxburghii can be promoted quickly. The method comprises the following steps of: taking a stem section of anoectochilus roxburghii as an explant material, and carrying out disinfection on the explant; carrying out induction on adventitious buds of the stem section; cultivating tissue culture seedlings; and transplanting the tissue culture seedlings. Through selecting a middle stem section without containing terminal buds and nasociliary roots as a cultivating object, the survival rate is high, and the rate of adventitious bud multiplication is high. An operation of adding bananas into a culture medium is highly beneficial to promoting the growth of seedlings, and the net increase of leaves, the rooting number and the net increase of fresh weight are high. Through tissue culture experiments, the proliferation rate can be up to5.7 times.

The present invention relates to nucleic acid molecules and in particular to vectors, comprising at least one gene of interest, at least one scaffold/matrix attached region (S/MAR), at least one origin of replication, and at least one replication initiation factor, cells comprising these, processes for their propagation, and their use, in particular for the high level expression of proteins which can be used as medicaments.

The invention disclose a technique for the tissue culturing and breeding of the red-welcome cuckoo as well as the technique for domestication and replanting, which comprises the first generation culture of inducing the clump sprout by applying the germ-free seedling as explant, subculture for enrichment-culture, root-growing inducing for the clump sprout, water-planting for domestication before replanting the tissue culture sprout, the final replanting to flowerpot and getting the red-welcome cuckoo. The invention is suitable for the red-welcome cuckoo from different places, the k-factor of the clump sprout is high, the root is uniform, and the survival rate after the water-culture domestication is high and is suitable for the red-welcome cuckoo commercial production.

The present invention relates to isolated protein sequences that correspond to cell binding peptides, fragments, neo-structures and/or neo-epitopes of a normally occurring serum protein present in human tissue, wherein the peptide, fragment, neo-structure and/or neo-epitope has an immunoregulatory activity and is the result of either an enhanced proteolytic activity and/or conformational changes in a tissue, or a malignant tumour. In the present patent application, a common structure of several of these peptides, fragments, neo-structures and/or neo-epitopes, having immunoregulatory activity by binding to receptors on immune cells, has been identified. The present invention further also relates to monoclonal and/or polyclonal antibodies directed to a cell binding fragment of a normally occurring serum protein present in human tissue, as described above.

This invention relates to composition and methods of employing said composition for treating or preventing microbial associated infections and diseases. More particularly the present invention relates to bacterial proteins, peptides and amino acids which are by-products of bacteria, in particular Lactobacillus and more specifically Lactobacillus strains GR-1 and RC-14, in compositions that can treat and prevent microbial-associated infections and diseases, by altering, for example, down-regulating, virulence properties of pathogenic organisms.

The invention provides a high active induction culture method for lily bulbil which is characterized in that: through an induction culture of embryoid and tissue enrichment culture of embryoid tissue, a relative high rapid propagation velocity is obtained; then through an differentiation culture of bulb-lets and an intumescence culture of bulb-lets, transplanting bulb-lets of a circumferential diameter bigger than 3cm are obtained. The growth rate of the bulb-lets of the invention can reach more than one million grains per years which is ten times that of conventional methods. With a large number of small bulb-lets obtained, the ratio of bulb-lets with large specification and large grain size is increased. The invention optimizes the culture procedures of preferential lily seedball, shortens the propagation time of preferential lily seedball; furthermore, the field planting survival rate of bulb-lets is high and the production cost is low; the invention is suitable for the scale rapid propagation production of cut lily elite.

The invention discloses a growth promotion cultivation method of fritillary bulbs. The growth promotion cultivation method mainly comprises the steps of selection and disinfection of explants, material treatment, primary culture, subculture, proliferation of bulblets, rooting culture, and management of soil for acclimatization and transplanting. Different hormones are used for adjusting at different culture phases; a formula of a culture medium is sieved accurately to realize the good effect of vigorous growth of test-tube seedlings; an effective sterilization technology is combined to achieve the aims of improving the proliferation rate, reducing variation, increasing soil fertility and reducing plant diseases and insect pests. The culture medium is replaced properly in the proliferation process of the bulblets which are subjected to subculture so as to facilitate the rapid growth of the bulblets. By comparing different parts of flakes, a best flake reproduction material is the lower part of inner-layer flakes.

The invention relates to the technical field of medical artificial bone transplantation materials. At present, bone transplantation is widely distributed in multiple fields such as orthomorphia, oral cavity, craniofacial region and the like. But all preparation methods of artificial bone transplantation materials have the problems that the manufacture period is long, the yield is low, and prepared artificial bone transplantation materials do not have precise anatomical morphology same to that of natural bone, and the like. The invention aims at providing a nanometer artificial bone scaffold possessing good bioactivity and excellent mechanical properties and a structure similar to that of natural bone. A selective laser sintering technology is employed, poly-epsilon-caprolactone and hydroxylapatite are taken as raw materials, and layer-by-layer sintering is performed according to a designed model and set parameters, and finally the artificial bone scaffold with the structure similar to that of natural bone is obtained. The artificial bone scaffold has outstanding biocompatibility, cells have relatively high propagation rate on the artificial bone scaffold, and the scaffold keeps good biomechanical properties.

The invention provides a method for rapidly breeding seedlings by using bletilla striata tubers. According to the method, rapid breeding is realized by using bletilla striata tubers, and the technical route of synchronization of bud increase and rooting is adopted, complete plants can be formed after about 50 days, and a large number of complete plants can be obtained within 4-6 months, so that large-scale industrial seedling breeding of bletilla striata is realized. The method for rapidly breeding seedlings by using bletilla striata tubers is simple, and the seedling breeding cost is reduced greatly. By adopting the method, quick budding and high reproduction rate are realized, the method is simple, tissue culture equipment is not required to be added, the production cost is low, batch production is realized and the application value is high.

The invention provides a tissue engineering meniscus scaffold and a preparation method thereof. The preparation method comprises the following steps: placing a polycaprolactone material into a nozzle of a fused deposition modeling three-dimensional printer to be heated to 120-140 DEG C, and preparing for printing at the air pressure of 600-1000 kPa; setting the printing speed of the fused deposition modeling three-dimensional printer to be 0.6-0.75 mm/s, the fiber diameter to be 300-320 [mu]m and the fiber interval to be 200-300 [mu]m and printing a tissue engineering meniscus scaffold; using cobalt-60 for irradiation and sterilization treatment. As the fused deposition modeling method is adopted to print the tissue engineering meniscus scaffold with an appropriate pore structure, an appropriate fiber diameter and appropriate biomechanical strength, the survival rate and the reproduction rate of inoculated cells and autologous in-growth cells of implanted regions are favorably increased, the fibrous cartilage differentiation rate can be increased, and newly generated meniscus tissues have favorable functions.

The invention relates to a selenium-rich microbial preparation prepared by fermentation of animal serum. The selenium-rich microbial preparation comprises the following raw materials in parts by weight: 8-15 parts of sodium selenite, 50-65 parts of animal blood hydrolysate, 5-15 parts of composite trace elements, 8-20 parts of potassium dihydrogen phosphate, 10-25 parts of urea, 8-20 parts of peptone, 4-10 parts of yeast powder, 8-20 parts of NaCl, 8-15 parts of NaOH, 4-10 parts of NaNO3, 10-25 parts of NaCl, 4-10 parts of NH4Cl, 8-20 parts of K2HPO4, 4-10 parts of beef extract, 10-25 parts of glucose, 10-25 parts of starch, 8-20 parts of calcium carbonate, 10-25 parts of amino acid, 2-6 parts of potassium nitrate, 2-6 parts of ferrous sulfate, 10-25 parts of magnesium sulfate, 25-40 parts of trisodium citrate, 10-25 parts of an biochemical enzyme and 800-848 parts of a mixed bacterial solution. According to the preparation method of the selenium-rich microbial preparation provided by the invention, the fermentation time is short, and the preservation period of the microbial agent can be prolonged to 2 years by increasing the proliferation speed of microbes in the fermentation process.

Problems to be Solved Methods for enhancing survival and/or proliferation of neural stem cells and pharmaceutical compositions containing neural stem cells prepared by such methods, together with methods for assaying factors enhancing survival and/or proliferation of neural stem cells and methods for screening for such factors. Means for Solving the Problem Either Galectin-1 is overexpressed in neural stem cells or neural stem cells are cultured in a liquid medium containing Galectin-1. Pharmaceutical compositions containing Galectin-1-overexpressing neural stem cells and pharmaceutical composition containing Galectin-1, prepared by the aforementioned methods, improve higher cerebral functions damaged by cerebral ischemia. Further, by seeding neural stem cells at clonal concentrations and determining whether the seeded neural stem cells are capable of proliferating in an assay medium to be assayed, whether the factor enhances survival and/or proliferation of neural stem cells is assayed and a factor enhancing survival and/or proliferation of neural stem cells are identified using this assay method.