230 results about "Vasculogenesis" patented technology

Disclosed are cell preparations comprising multipotent adult stem cells and methods for using multipotent adult stem cells to treat autoimmune diseases, treat allergic responses, treat cancer, treat inflammatory diseases, treat fibrotic disorders, reduce inflammation and/or fibrosis, promote would healing, repair epithelial damage, and/or promote angiogenesis.

Disclosed are methods, compositions, and cells useful for increasing insulin sensitivity, as well as lack of insulin production in a host in need thereof. One aspect of the invention discloses methods of increasing skeletal muscle perfusion through administration of cells capable of directly and/or indirectly stimulatory of angiogenesis and/or vascular responsiveness. Another aspect provides means of increasing sensitivity to insulin through administration of a cell composition capable of integrating into host insulin responsive tissue and upregulating responsiveness either through mobilization of host cells capable of responding to insulin, mobilization of host cells capable of endowing insulin responsiveness on other host cells, exogenously administered cells taking the role of insulin responsiveness, or exogenously administered cells endowing insulin responsiveness on other host cells. Another aspect comprises modifying said host to allow for concurrent insulin sensitization and upregulated production of insulin.

The invention provides novel methods for treating disease based upon the medicinal use of lipids and phospholipids covalently bound to physiologically acceptable monomers or polymers. Phosphatidylethanolamine moieties conjugated to physiologically acceptable monomers and polymers (PE conjugates) manifest an unexpectedly wide range of pharmacological effects, including stabilizing cell membranes; limiting oxidative damage to cell and blood components; limiting cell proliferation, cell extravasation and (tumor) cell migratory behavior; suppressing immune responses; and attenuating physiological reactions to stress, as expressed in elevated chemokine levels. The surprisingly manifold pharmacological properties of the PL-conjugates allow for the invention, disclosed herein, of novel methods for the treatment of a diverse range of disease states, including obstructive respiratory disease, including asthma; colitis and Crohn's disease; central nervous system insult, including blood brain barrier compromise, ischemic stroke, and multiple sclerosis; contact dermatitis; psoriasis; cardiovascular disease, including ischemic conditions and prophylaxis for invasive vascular procedures; cellular proliferative disorders, including anti-tumor vasculogenesis, invasiveness, and metastases; anti-oxidant therapy; hemolytic syndromes; sepsis; acute respiratory distress syndrome; tissue transplant rejection syndromes; autoimmune disease; viral infection; and hypersensitivity conjunctivitis. The therapeutic methods of the invention include administration of phosphatidylethanolamine bound to carboxymethylcellulose, heparin, hyaluronic acid, polyethylene glycol, and Polygeline (haemaccel). Disclosed herein are also new compounds comprised of phospholipid moieties bound to low molecular weight monomers and dimers, including mono- and disaccharides, carboxylated disaccharides, mono- and dicarboxylic acids, salicylates, bile acids, and fatty acids.

The present invention encompasses an adipose-derived adult stromal (ADAS) cell exhibiting at least one characteristic of a pre-endothelial cell and/or an endothelial cell. The present invention also encompasses compositions and methods for generating an adipose-derived adult stromal to exhibit at least one characteristic of a pre-endothelial cell and/or an endothelial cell. Methods for using the cells in vascular transplantation, tissue engineering, regulation of angiogenesis, vasculogenesis, and the treatment of numerous disorders including heart disease are also included.

Applicants have defined the pro-inflammatory domain of the Vascular Endothelial Growth Factor VEGF164(165) protein molecule using VEGF164 protein mutants in which the heparin binding domain is inactivated through alanine scanning, site directed mutagenesis. The invention provides novel VEGF variants having a modified heparin binding domain. The VEGF variants modified heparin binding function compared to native VEGF while maintaining receptor binding function. The invention provides compositions and methods for treating disorders relating to angiogenesis and inflammation.

The present invention relates to a method of diagnosis or prognosis of cardiovascular disease in a subject, said method comprising the steps of detecting the presence of activated endothelial progenitor cells (EPCs) in a sample of a circulation fluid of said subject. The invention further relates to biomarkers for diagnosis or prognosis of cardiovascular disease in a patient, said biomarker comprising the expression product of a gene the expression of which is regulated during vasculogenesis.

Methods of treating chronic post-traumatic encephalopathy (PTE) using regenerative approaches is described. In one embodiment, molecules with capability of stimulating endogenous neural stem cells is provided. In another embodiment, cell therapeutics are provided capable of addressing angiogenic deficits in patients suffering from PTE. In another embodiment, cells are utilized to induce activation of endogenous progenitor cells in the central nervous system of PTE patients. Furthermore, low level laser irradiation is disclosed as a means of treatment of PTE either through direct administration to CNS tissue for stimulation of endogenous progenitor cells and reparative processes, or together with administration of exogenous stem cells, whether autologous or allogeneic. In a further embodiment exogenous stem cells are pretreated with laser prior to administration.

It is intended to provide a novel polypeptide having an activity of growing vascular endothelial cells, an activity of promoting transcription form c-fos promoter, an activity of promoting transciption from VEGF promoter and/or an angiogenic activity; a polynucleotide encoding this polypeptide; the above polypeptide and/or a pharmaceutical composition containing the polypeptide for treating a disease selected from the group consisting of obstructive arteriosclerosis, Buerger's disease, peripheral vascular disorder, angina, myocardial infraction, brain infarction, ischemic heart disease and ischemic brain disease; a method of treating these diseases; and an antibacterial composition. The above problems can be solved by isolating a novel peptide having the above-described activities and a nucleotide encoding this peptide.

The present invention relates to a composition for skin regeneration, using a culture medium or a secretion in the culture of an embryonic stem cell-derived endothelial progenitor cell, and to the use thereof. As the present invention uses the secretion in the culture as a medicine and not the embryonic stem cell-derived endothelial progenitor cell itself, the risk of teratoma formation is prevented, and angiogenic activity is promoted to achieve improved effectiveness in healing wounds and burn wounds. The composition of the present invention, when used as a material in cosmetics, increases collagen synthesis and thus prevents skin aging. Particularly, the composition of the present invention in which the secretion in the culture is concentrated into a high concentration provides superior wound-healing effects as compared to a conventional human growth hormone (hGH).

An efficient angiogenesis depressant HM-3 for treating the solid tumors including stomach cancer, lung cancer and liver cancer is prepared through expressing in colibacillus by genetic engineering method, separating the protein of inclusion body, dissolving, re-naturalizing, and separating-purifying by ion change and chromatography.

The invention discloses a pyrimidine compound of a structural formula A. The structural formula A is shown below. The pyrimidine compound can be used for preparing medicaments for treating diseases associated with vasculogenesis, in particular medicaments for treating tumor, age-related macular degeneration or autoimmune diseases.

CD44, the receptor for hyaluronic acid, has complex functions in cellular physiology, cell migration and tumour metastasis. The inventors have previously found that human CD44 receptor overexpression in mouse fibrosarcoma cells inhibits subcutaneous tumour growth in mice [Kogerman et al., Oncogene 1997; 15:1407-16; Kogerman et al., Clin Exp Metastasis 1998; 16:83-93]. Here it is demonstrated that a tumour growth inhibitory effect of CD44 is caused by block of angiogenesis. Furthermore, the inventors have found that soluble recombinant CD44 hyaluronic acid binding domain (CD44HABD) inhibits angiogenesis in vivo in cLick and mouse and thereby inhibits human tumour growth of various origins. The anti-angiogenic effect of CD44-HABD is independent of hyaluronic acid (HA) binding, since non-HA-binding mutants of CD44HABD still maintain anti-angiogenic properties. The invention discloses soluble CD44 recombinant proteins as a novel class of angiogenesis inhibitors based on targeting of vascular cell surface receptor. A method of block of angiogenesis and treatment of human tumours using recombinant CD44 proteins as well as their analogues is disclosed. As a further embodiment of the invention, methods for screening for new drug targets using CD44 recombinant proteins and their analogues is presented.

Methods of identifying specific target molecules for design of anti-angiogenic and vascular targeting approaches are disclosed. Transcriptional profiles of tumor endothelial cells were compared with that of normal resting endothelial cells, normal but angiogenically activated placental endothelial cells, and cultured endothelial cells. Although the majority of transcripts were classified as general angiogenesis markers, 17 genes were identified that show specific overexpression in tumor endothelium. Antibody targeting of four cell-surface expressed or secreted products (vimentin, CD59, HMGB1 and IGFBP7) inhibited angiogenesis in vitro and in vivo. Finally, targeting endothelial vimentin in a mouse tumor model significantly inhibited tumor growth and reduced microvessel density. The results demonstrate the utility of the identification and subsequent targeting of specific tumor endothelial markers for anticancer therapy.

An acellular dermal graft is provided. The acellular dermal graft may be useful in minimizing side effects caused after transplantation since an environment favorable for formation of new blood vessels and proliferation of autologous tissues is provided by forming a multi-penetration structure in an acellular dermal tissue, removing a basement membrane layer and/or subjecting corners to slope cutting, and transplantation is stably performed within a short transplantation time due to improved extensibility and flexibility of tissues. The acellular dermal graft may be useful in reducing a time required to recover tissues after transplantation since the transplantation is stably performed due to improved grafting reaction with a host tissue by enhancing uptake of fibroblasts and promoting angiogenic activities. Also, the acellular dermal graft may be useful in maintaining smooth external appearance since hypodermic implantation is easily performed upon transplantation, and the skin at a graft site does not protrude after transplantation.

A CS/β‐TCP porous composite material for promoting osteogenesis and its preparation method, by mixing calcium silicate (CS) and tricalcium phosphate (β‐TCP) powders according to the mass ratio, adding polyvinyl alcohol ( PVA) is uniformly mixed into a paste, and then 3D printed, and the printed three-dimensional model is dried at room temperature and then sintered at high temperature to obtain a CS/β-TCP porous composite material with a pore cross-section of a square of 350 μm×350 μm; the process of the present invention is simple , with better biocompatibility and uniform through-hole structure, which is beneficial to osteoinduction and angiogenesis.

The invention discloses a fibrin hydrogel stent loaded with human umbilical cord mesenchymal stem cells and application of the fibrin hydrogel stent, and belongs to the technical field of hydrogel. The human umbilical cord mesenchymal stem cells are cultured until the density reaches 70 percent to 80 percent; treatment is performed by using a cell digestion solution, and the human umbilical cord mesenchymal stem cells are resuspended by using a fibrin raw solution to obtain a human umbilical cord mesenchymal stem cell-fibrin raw solution mixed solution; and a thrombin solution is added into the mixed solution to obtain the fibrin hydrogel stent loaded with the human umbilical cord mesenchymal stem cells. Through combined application of the fibrin hydrogel stent and the human umbilical cordmesenchymal stem cells, the healing speed of a wound is obviously accelerated; the re-epithelialization is promoted; the inflammatory response is inhibited; the angiogenesis is promoted; the scar formation is reduced; the wound is healed to be close to normal skin tissues to a greater extent; and the treatment requirement is met.

The invention discloses a nerve regeneration gel as well as a preparation method and application thereof. The matrix of the nerve regeneration gel is formed by fibrinogen, thrombin, laminin and fibronectin; the nerve regeneration gel contains procyanidine, sonic hedgehog, an epidermal growth factor, neurenergen-3 and a vascular endothelial growth factor. In-vitro test and animal test show that thegel is capable of accelerating neuron regeneration and neurite extension and repairing the injured nerve tissue. The matrix of the gel comprises fibrin, laminin and fibronectin and is capable of reducing formation of cavities and accelerating adhesion and proliferation of endogenous neural stem cells; the procyanidine in the gel is capable of resisting oxidation and inhibiting inflammation; the sonic hedgehog, the epidermal growth factor and the neurenergen-3 are capable of accelerating proliferation of the stem cells and differentiation to neurons of the stem cells; the vascular endothelialgrowth factor is capable of accelerating generation of blood vessels. The gel can be formed in situ on injured parts and can be used for treating nervous system injury.

The invention discloses an immunologic tolerance dendritic cell, a preparation method thereof and a special culture medium. The culture medium is formed by the way that mesenchyma stem cells are added into a dendritic cell culture medium. The preparation method comprises: the precursors and the inducible factors of dendritic cells are added into the culture medium. The co-culture proportion of the mesenchyma stem cells to the dendritic cells is (1-2) to (1-10), preferably 1 to 1; the precursors of the dendritic cells are CD34 cells; and the inducible factors comprise GM-CSF, TNF- alpha, IL-4 and LPS. The invention provides the application of the immunologic tolerance dendritic cell during preparing immunologic tolerance medicine for organisms. The immunologic tolerance dendritic cell can lowly express co-stimulatory molecule, reduce inflammatory factors, increase the secretion of suppressor cytokines, have vasculogenesis activity, and inhibit the multiplication of variant T cells. The invention has the advantages of simple operation, convenience and practicality, and establishes a stable culture technical system for selective activation dendritic cells.

The invention relates to platycodon grandiflorum polysaccharide extracted from rhizome of platycodon grandiflorum, a degradation product of the polysaccharide, a method for extracting the platycodon grandiflorum polysaccharide from the rhizome of the platycodon grandiflorum, a method for preparing the degradation product of the platycodon grandiflorum polysaccharide, and application of the platycodon grandiflorum polysaccharide and the degradation product thereof to preparing a medicine for treating anti-tumour cell angiogenesis diseases. The structure of the platycodon grandiflorum polysaccharide disclosed by the invention is (1->4)-alpha-D- pyranose homogalacturonan, has the polymerization degree of 15-100, the corresponding molecular weight of 2.0-18.0 kD, and the specific rotation of [alpha]D19+125 DEG (c0.05, H2O), and is represented by the following structural formula described in the specification. The molecular weight range of a degradation product obtained by partial acid hydrolysis of the platycodon grandiflorum pectin polysaccharide is 1.4-3.0 kDa. Vivo experiments prove that the platycodon grandiflorum polysaccharide can obviously inhibit lumen generation function of a human microvascular endothelial cell (HMEC-1) and is hopefully used as a novel anti-tumour medicine for inhibiting the growth of a solid tumour by inhibiting angiogenesis.