179 results about "Lymphocyte proliferation" patented technology

Chimeric T cell receptors (TCR) are provided that combine, in a single chimeric species, the intracellular domain of CD3 ζ-chain, a signaling region from a costimulatory protein such as CD28, and a binding element that specifically interacts with a selected target. When expressed, for example in T-lymphocytes from the individual to be treated for a condition associated with the selected target, a T cell immune response is stimulated in the individual to the target cells. The chimeric TCR's are able to provide both the activation and the co-stimulation signals from a single molecule to more effectively direct T-lymphocyte cytotoxicity against the selected target and T-lymphocyte proliferation.

Chimeric T cell receptors (TCR) are provided that combine, in a single chimeric species, the intracellular domain of CD3 zeta-chain, a signaling region from a costimulatory protein such as CD28, and a binding element that specifically interacts with a selected target. When expressed, for example in T-lymphocytes from the individual to be treated for a condition associated with the selected target, a T cell immune response is stimulated in the individual to the target cells. The chimeric TCR's are able to provide both the activation and the co-stimulation signals from a single molecule to more effectively direct T-lymphocyte cytotoxicity against the selected target and T-lymphocyte proliferation.

The present invention relates to a compound of the formula wherein R1 is substituted aryl, heteroaryl and the like, R2 and R3 are hydrogen, alkyl, halogen, hydroxyl group and the like, Q is N, CH and the like, W is hydrogen, alkyl, hydroxycarbonylalkyl and the like, X is halogen, cyano, nitro, amino and the like, X′ is hydrogen, halogen, cyano, nitro, and Y is alkyl, hydroxyl group, alkoxy, mercapto and the like and a salt thereof, and a medicine containing the said compound. The compound of the present invention shows a superior inhibitory effect on activated lymphocytes proliferation and is useful as an agent for the prophylaxis or treatment of various autoimmune diseases.

The invention relates to a method for preparing an immunocompetent soybean peptide by enzymolysis and membrane separation, belonging to the technical field of soybean protein deep processing. The method comprises the following steps of: by taking defatted soybean protein powder as a raw material, firstly, carrying out acid cleaning on the defatted soybean protein powder to obtain acid washed soybean protein; then carrying out enzyme hydrolysis by using an Alcalase protease under certain conditions to obtain coarse soybean peptide liquid; clarifying the prepared coarse soybean peptide liquid by adopting microfiltration; then carrying out enrichment and desalination treatment by adopting ultrafiltration and nanofiltration; and finally, drying to obtain the powdery immunocompetent soybean peptide. The activity of the soybean peptide is determined by adopting a neutral red phagocytosis test and a lymphopoiesis method, which proves that the prepared soybean peptide has high immunocompetence.

The invention relates to the technical field of mesenchymal stem cells for cell therapy, in particular to a method for strengthening an immune-suppression function of the mesenchymal stem cells. Separated mesenchymal stem cells are sub-cultured and then cultured in a culture medium containing IFN-gamma, IL-1beta and progesterone. After subjected to co-cultivation and activation of the IFN-gamma, theIL-1beta and the progesterone, the suppression ratio of the MSC cells to lymphocyte proliferation is improved by 2-7 times, the expression of immune-suppression protein in the MSC cells is improved by 2-12 times, the capacity of cell secretion anti-inflammatory cytokines is improved by 5-20 times, and the capacity of secretion proinflammatory cytokines is reduced by 10%-30%, and the immune-suppression activity of the MSC cells is increased greatly.

The present invention relates to a method and composition for inducing lymphocyte proliferation and migration, and for reducing the risks of microbial infections in patients immuno-supressed. The present invention particularly relates to the use of S100 protein, such as MRP, to induce the proliferation, differentiation and release of immune cells from bone marrow. More particularly, S100A8, S100A9, S100A12 and S100A8 / A9 are administered to patients with lowered neutrophil blood concentrations.

The invention provides a novel herbal composition containing the extracts of the leaves and / or stem of <italic>Argemone mexicana < / highlight>plant, optionally containing the extracts of the fruits of <italic>Cuminum cyminum< / highlight>, which exhibits useful in vitro, in vivo and interesting immunological and pharmacological activities; a process for preparation thereof; and a method of treatment of psoriasis and related immunological and biological disorders by administration of the said novel herbal composition. The useful in vitro, in vivo and interesting immunological and pharmacological activities exhibited by the extracts and fractions of the leaves and / or stem of <italic>Argemone mexicana < / highlight>plant include immunosuppression, lymphoproliferation inhibition, cytokine modulation such as IL-2 inhibition, IFNgamma inhibition, IL-10 induction, keratinocyte proliferation inhibition, keratolytic activity, endothelial cell proliferation inhibition, inhibition of cell adhesion molecule expression such as ICAM-1, MEST inhibition, and enzymes inhibition such as p60src Tyrosine kinase, which are known to be involved in anti-psoriatic activity. The novel herbal composition(s) is useful in the treatment of various disorders, such as psoriasis including plaque psoriasis, gutatte psoriasis, pustular psoriasis and psoriasis of the nails; dermatitis and scleroderma; eczema; inflammatory disorders and other autoimmune diseases like psoriatic arthritis, rheumatoid arthritis, Crohn's disease, multiple sclerosis, irritable bowel disease, ankylosing spondilitis, systemic lupus erythremetosus and Sjogren's syndrome; allergies like asthma and chronic obstructive pulmonary disease and is safe, well-tolerated, non-toxic, with minimal and reversible adverse reactions or side effects, and most importantly, with minimal relapse or recurrence of the disease following completion of a treatment regimen. The invention also describes the presence of phosphodiesterase (III, IV and V) inhibition and 5-Lipoxygenase inhibition in the aqueous, ethanolic or aqueous-ethanolic extracts of fruits of <italic>Cuminum cyminum < / highlight>plant.

The present invention relates to the field of biotechnology, and in particular to a method for detecting the immunomodulatory ability of mesenchymal stem cells. The method for detecting the immunomodulatory ability of the mesenchymal stem cells conducts co-culture on an original sample and the mesenchymal stem cells to be evaluated to obtain a sample to be tested; and in comparison with the original sample, an amount of proportion change of a lymphocyte subpopulation, an amount of change in lymphocyte secretion of TNF-alpha, and an amount of change in lymphocyte proliferation ability in the sample to be tested are detected to evaluate the immunomodulatory ability of the mesenchymal stem cells. The method can evaluate the immunomodulatory ability of a certain mesenchymal stem cell. If the proportion of lymphocyte subpopulation, the amount of change in lymphocyte secretion of TNF-alpha and the amount of change lymphocyte proliferation are greater, the immunomodulatory ability and qualityof the mesenchymal stem cells are better. The detection method provided by the present invention is also suitable for differential administration.

The invention discloses a preparing method for clinic level cells for enhancing the immune modulating function of MSCs. The preparing method is suitable for culturing the mesenchymal stem cells from bone marrow, fat and the umbilical cord. A serum-free complete medium is adopted to culture the mesenchymal stem cells from umbilical cord tissue, a traditional method is improved by applying a secondary inoculation method, and the obtaining rate of primary cells is increased. Imidazoquinoline R848 with the concentration of 1-5 micrograms / milliliters and recombinant human interferon I FN-alpha-2b with the concentration of 100-200 units / milliliters are applied as pretreatment factors and obviously induce high expression of the MSCs and secretory cell factors VEGF, HGF and PGE-2, the capacity for modulating immune and promoting tissue regeneration of the MSCs is brought into play better, the multiplication capacity and the capacity for resisting NK cell killing of the MSCs can be improved obviously, and the pretreated MSCs have the enhanced capacity for suppressing lymphocyte proliferation and can be applied to treatment on the GVHD with T cells as the principal and other autoimmune diseases better.

The invention provides a recombinant baculovirus with the surface displaying a porcine epidemic diarrhea virus S protein, and a preparation method thereof. The virus adopts PEDV spike protein S1 gene as antigen gene, the recombinant virus is constructed by using an insect baculovirus vector expression system, and an S1 protein is successfully expressed and displayed on the surface of the virus. The recombinant virus is used to immunize and inoculate mice as a PEDV pseudo-virus vaccine, and serum neutralization test and lymphocyte propagation experiment analysis shows that the recombinant virus can arouse an effective immune protection effect.

The invention discloses a ginsenoside-containing medicine composition. The ginsenoside-containing medicine composition comprises the following active ingredients by weight percent: 20-70 percent of ginsenoside Rg, 10-40 percent of ginsenoside Rh2 and 20-50 percent of notoginsenoside ft1. The invention also provides application of the composition to drugs for preventing and treating cancers, auxiliary anti-cancer drugs and medicines or health products used for strengthening the organic immunity. The ginsenoside-containing medicine composition can effectively inhibit tumor cells and stimulate lymphocyte proliferation, has excellent pharmacological effects, and has better security on the basis of saving resources and taking better drug effects.

The invention provides an application of lactobacillus rhamnosus in regulating immunity. The lactobacillus rhamnosus is preserved in China General Microbiological Culture Collection Center on August 10, 2017, has the preservation number of CGMCC No.14511, and is classified and named as lactobacillus rhamnosus. The lactobacillus rhamnosus has good immunoregulatory effect on a body, has the inhibiting effect on the expression of inflammatory factors, the promotion effect on the anti-inflammatory factors and the promotion effect on lymphocyte proliferation significantly better than those of conventional commercial lactobacillus rhamnosus strains, and has immunoregulatory function on the body significantly better than that of the conventional lactobacillus rhamnosus strains.

The invention belongs to the field of cellular immunology, and discloses a methodological study for inducing mass generation of dendritic cells (DCs) from cord blood CD34+ hematopoietic stem cells. The method comprises the following main steps: separating mononuclear cells from cord blood, separating CD34+ hematopoietic stem cells through an immunomagnetic bead positive screening method, continuously amplifying the CD34+ cells for 30 days by using an amplification culture medium (IMDM, FBS, GM-CFS, SCF), periodically collecting mass CD34-DC precursor cells during the amplification process, and inducing the precursor cells to be differentiated into immaturate DCs through a GM-CFS / IL-4 culture medium. The method disclosed by the invention is capable of obtaining the DCs with 109 orders of magnitudes; compared with the traditional DCs induced by peripheral blood mononuclear cells, the CD34-DCs have high antigen phagocytic capacity and the capacity of inducing T lymphocyte proliferation.

The invention relates to a traditional Chinese medicine immunopotentiator (an astragalus polysaccharide immunopotentiator for short) prepared from astragalus extracts and sulfated epimedium polysaccharides, which belongs to the field of immunological adjuvants of livestock and poultry. 1,000ml of the liquid medicine is prepared from 40g of astragalus and 120g of epimedium herb. The preparation method of the immunopotentiator comprises the following steps of: decocting the astragalus with water for three times, then merging the obtained filter liquor and condensing the filter liquor into 500ml of astragalus solution; extracting the epimedium polysaccharides by using the epimedium herb water decoction and ethanol precipitate method, then decorating the polysaccharides by using the chlorosulfonic acid-pyridine method, and preparing the polysaccharides into 500ml of sulfated epimedium polysaccharide solution after carrying out distilled water dialysis on the polysaccharides; and mixing the astragalus solution and the sulfated epimedium polysaccharide solution, and then filtering, sub-packaging and sterilizing to obtain the traditional Chinese medicine astragalus polysaccharide immunopotentiator. The immune experiment shows that the astragalus polysaccharide immunopotentiator has the advantage of obviously improving the proliferation of peripheral blood lymphocyte of chicken and enhancing the cellular immunity, obviously improving the potency of a serum antibody, promoting the lymphocyte proliferation, enhancing the cellular immunity and humoral immunity, and improving the immune response of a vaccine by coordinately immunizing chickling by using the Newcastle disease vaccine.

The present invention relates to novel semisynthetic macrolides with anti-inflammatory activity. More specifically, the present invention relates to 14- and 15-membered macrolides substituted at the 4" position, their pharmaceutically acceptable derivatives, their preparation methods and intermediates, pharmaceutical compositions containing them and Their activity and use in the treatment of inflammatory diseases and conditions in humans and animals, especially those associated with excessive secretion of TNF-alpha, IL-1, IL-8, IL-2 or IL-5; and / or for use as Activity and uses of inhibitors of lymphocyte hyperproliferation and / or granulocyte degranulation.

A health-care food for treating hypoimmunity and early senility is prepared from sheep fetus powder, sheep placenta powder, VE and VC. Its preparing process is also disclosed.

The invention discloses ten specific proteins of novel authentic cordyceps sinensis and also discloses a detection method of authentic cordyceps sinensis, namely a method for detecting whether a to-be-detected sample contains one or more of the ten proteins or not. The detection method of authentic cordyceps sinensis is high in accuracy, convenient in operation and low in cost; meanwhile, the novel proteins have a function of promoting the proliferation of lymphocyte and can be made into a drug for promoting the proliferation of lymphocyte, thus having good application prospects.

The invention discloses a new application of a Chinese traditional medicine compound. The weight proportion of the raw materials of the effective ingredients during the preparation is: 308 parts of holly root, 43 parts of helicteres angustifolia, 59 parts of citrus medica, 18 parts of lophatherum gracile, 1 part of oroxylum seed, 18 parts of buzhaye, 46 parts of Chinese knotweed, 104 parts of japonicum, 27 parts of herba desmodii styracifolii and 106 parts of cherokee rose root. The invention is applicable for the preparation of the medicine, healthy food or food additive which can improve the anti-stress effect and treatment or improve the immunity weakness caused by stress and / or the sugar and fat metabolization weakness. The Chinese traditional medicine compound effectively adjusts the immunity organ atrophy resulted from the stress, the reduction of the quantity of the spleen cells, the reduction of proliferation ability of the lymph cells, the proportional disorder of the T cell sub-group in the lymph cells, and increases the activation of the NK cells in killing bacteria.

The invention provides a production method of a selenium-enriched camellia oil. Selenium-enriched camellia fruits are obtained through applying a selenium-enriched feed to camellia trees, the obtained selenium-enriched camellia fruits are subjected to drying, shelling, sorting, steaming and stir frying, squeezing and deodorization, and thus the selenium-enriched camellia oil is obtained; the production method of the selenium-enriched camellia oil is simple in operation, not only retains original nutritional ingredients of a camellia oil, but also increases the content of selenium; selenium can enhance human body immunity and promote lymphocyte proliferation and antibody and immunoglobulin synthesis, so that the selenium-enriched camellia oil has the effects of lowering lipid, reducing weight, resisting cancer and the like; and any pollution does not exist during the operation, and real energy saving and environmental protection are achieved.

The invention discloses a livestock compound medicine with anti-virus and immune regulation functions. The livestock compound medicine is prepared from astragalus root, codonopsis pilosula, angelica, hedyotis diffusa, honeysuckle, radix bupleuri, liquorice and Isoprinosine. The livestock compound medicine has the functions of invigorating spleen-stomach and replenishing qi, replenishing blood, invigorating the circulation of blood, strengthening spleen and tonifying lung, clearing away heat and toxic materials, protecting liver, anti-inflammatory and reinforcing the organism immunity and has excellent treatment effect on various immune suppression diseases of livestock. The livestock compound medicine can improve the organism immunity of livestock, reinforce the cell immunity of livestock, promote the antibody generation, eliminate the organism immunity inhibition and effectively prevent and treat the livestock virosis. After use, the livestock compound medicine can promote the lymphocyte proliferation, increase the phagocytotic ability of phagocyte, reinforce the organism immunity of livestock, eliminate the organism immunity inhibition and greatly reduce the injury of immunosuppressive diseases to the livestock organism. The livestock compound medicine has no medicine residue, meets the safety and health requirements of livestock foods and is convenient to use; the livestock compound medicine can be taken together with drinking water or can be mixed with feed without affecting the export of such animal products as livestock products.

The invention relates to protein peptide powder for enhancing immunity and a preparation method and application thereof. The protein peptide powder is prepared from the following raw materials by weight: 30%-45% of marine fish skin collagen oligopeptide powder, 30%-50% of soybean oligopeptide powder, 10%-20% of Isomaltooligosaccharide, 8%-13% of polydextrose and 0%-0.5% of a sweetener. The protein peptide powder can increase macrophage phagocytic rate and phagocytic index and serum hemolysin content, enhances lymphocyte proliferation and NK cell activity, promotes antibody formation cell number increase, improves the body's immunity, and enhances body immunity.

The present invention discloses a CTL epitope polypeptide of porcine reproductive and respiratory syndrome virus (PRRSV) and application thereof. The amino acid sequence of the CTL epitope polypeptide of PRRSV provided by the present invention is as shown in sequence 1 in a sequence table. The invention also protects a nucleic acid molecule encoding the polypeptide. The CTL epitope polypeptide of PRRSV provided by the present invention can combine with a swine SLA-I molecule, can be used for preparing a vaccine for PRRSV and preparing a chicken CD8 + T lymphocyte proliferation agent.

The invention discloses a culture medium for indoor cultivation for selenium enrichment stropharia rugoso-annulata and a cultivating method. The culture medium for indoor cultivation for selenium enrichment stropharia rugoso-annulata comprises a mother strain culture medium, an original strain culture medium and stropharia rugoso-annulata cultivating materials, selenium (Se) and a fertilizer containing selenium (Se) are added into the culture medium, the selenium is guided into the stropharia rugoso-annulata body, therefore the stropharia rugoso-annulata with higher organic selenium content isgenerated, and the organic selenium content in the fresh stropharia rugoso-annulata reaches 0.08 mg / kg-1 mg / kg. The selenium can improve the human immunity and promote the lymphocyte proliferation and the synthesis of antibodies and immune globulin. According to the method, the stropharia rugoso-annulata can be produced indoors or in a temperature control greenhouse, the full-year market supply of the stropharia rugoso-annulata is ensured, and organic selenium is provided for consumers; according to the method, the processes are convenient, the pollution rate is low, the strains are pure, theoperations are simple, the cultivating period is short, the biological efficiency reaches 70%, and the method is worthy of application and popularization of factorization and industrialization.

The invention relates to a cyclic peptide which is provided with a residue fragment of -Ile-Sta-Pro- and is used as immunosuppressive agents, and the synthesis process of the cyclic peptide (Ile-Ile-Sta-Pro-Tyr-Val-Pro-Leu) consists of 1) removing amino-protecting groups, 2) transpeptidase reaction, 3) the cutting of peptide chain, 4) cyclization of peptide chain. The cyclic peptide compounds which are provided with the residue fragment of -Ile-Sta-Pro- and used as immunosuppressive agents and have a high yield and a high purity can be obtained, and the immunosuppressive activity of the cyclic peptide compounds is higher. Through the experiments of the retarding effect of A1HS1 towards the delayed hypersensitivity of mice, the influence of phagocytic function of macrophages, and the retarding effect of the proliferation of lymphocytes, the A1HS1 shows a stronger immunosuppressive effect than HS-1, which reaches or surpasses the immunosuppressive of the positive contrast (cyclosporine).

The compound ginseng-astragalus immunopotentiator for enhancing immunological function of animal is injection, each 1000 ml of which contains ginsenoside 0.75 g and astragalus polysaccharide 3.0 g except water for injection. The compound ginseng-astragalus immunopotentiator may be used alone to enhance the cellular immunity and humoral immunity or as immunological adjuvant to result in excellent immunopotentiating effect. Pharmacological test shows that the immunopotentiator can raise the expression of chicken's peripheral blood T lymphocyte IL-2mRNA and IFN-gamma-mRNA. Safety test shows that the immunopotentiator has no irritation and no toxicity.

The invention relates to a calreticulin-soluble programmed death receptor 1 fusion protein, and a preparation method and a purpose thereof. The invention provides a fusion protein CRTdelta-sPD1 of a mice C-zone-partially-amputated calreticulin and soluble programmed death receptor 1 extracellular domain; the fusion protein is subjected to eukaryotic expression, such that a cell line stably expressing CRTdelta-sPD1 is established; and the CRTdelta-sPD1 is secreted out of the cells by using secretory peptide. The CRTdelta-sPD1 fusion protein provided by the invention has activities of combining cell surface PD-L1 and promoting lymphocyte proliferation and killing. Also, the CRTdelta-sPD1 fusion protein can be activated in vivo, and can induce an immune system to perform specific killing against tumors. Therefore, tumor growth is inhibited, and tumor mice survival time is prolonged. The CRTdelta-sPD1 fusion protein can be adopted as a tumor immunotherapy medicine candidate, and can be used for treating diseases such as tumors.

The invention discloses a screening method of immunologic function evaluation indexes of an anthropopathic nose-only rat. The screening method comprises the following steps: taking serum, splenic lymphocyte, splenic lymphocyte culture supernate, peritoneal macrophage and blood of an air breathing rat as a normal contrast group, and taking serum, splenic lymphocyte, splenic lymphocyte culture supernate, peritoneal macrophage and blood of a rat continuously smoking cigarettes through the nose as a smoking group; detecting the multiplication capacities of the lymphocyte, the swallowing conditions of the peritoneal macrophage, the contents of IL-6, TNF-alpha, Ig, IgG and IgE and the differential counting of leukocyte of each group; and finally, screening out five indexes of lymphopoiesis stimulation indexes, the contents of the IL-6, the IgG and the IgE and the differential counting of leukocyte as sensitive and stable evaluation indexes for reflecting the changes of the immunologic functions of the smoking rat. The method is scientific and comprehensive, and the screened evaluation indexes have good sensitive stability.

Through the experiments and researches on calycosin, it has been found for the first time that calycosin can prominently inhibit the T lymphocyte proliferation induced by concanavalin A (Con A), has an immunity inhibiting effect, and is advantageously used to prepare immunity inhibitors.