834 results about "Neural stem cell" patented technology

Novel products comprising conditioned cell culture medium compositions and methods of use are described. The conditioned cell medium compositions of the invention may be comprised of any known defined or undefined medium and may be conditioned using any eukaryotic cell type. The medium may be conditioned by stromal cells, parenchymal cells, mesenchymal stem cells, liver reserve cells, neural stem cells, pancreatic stem cells and/or embryonic stem cells. Additionally, the cells may be genetically modified. A three-dimensional tissue construct is preferred. Once the cell medium of the invention is conditioned, it may be used in any state. Physical embodiments of the conditioned medium include, but are not limited to, liquid or solid, frozen, lyophilized or dried into a powder. Additionally, the medium is formulated with a pharmaceutically acceptable carrier as a vehicle for internal administration, applied directly to a food item or product, formulated with a salve or ointment for topical applications, or, for example, made into or added to surgical glue to accelerate healing of sutures following invasive procedures. Also, the medium may be further processed to concentrate or reduce one or more factors or components contained within the medium.

A therapeutic agent for spinal cord injury, a modulator of differentiation of neural stem cells and an inhibitor of differentiation into glia cells comprising an interleukin-6 antagonist as an active ingredient.

The invention is directed to a purified population of mammalian endothelial, muscle, or neural stem cells. The invention further provides methods for isolating such populations of cells; methods for using such populations of cells for treating mammals; methods for making vectors for gene therapy; and methods for carrying out gene therapy with such vectors.

Neural stem cells which can be provided stably and which are free from the problem of compatibility in transplantation are disclosed. The stem cells are separated from human amniotic mesenchymal cell layer and express vimentin, nestin and BrdU which are markers of neural stem cells. The stem cells can also be differentiated to cells expressing alkaline phosphatase, that is, osteocytes, and to cells expressing collagen type II, that is, chondrocytes.

This invention relates to a method for amplifying neural stem cells in vitro by 3-dimensional culture. The method comprises: selecting microcarrier with 3-dimensional environment, pre-treating, coating the microcarrier with 40-60 ng/mL alkaline fibroblast growth factor, 40-60 ng/mL epidermal growth factor, and B27 DMEM/F12 neural stem cell serum-free culture medium, adding 1X105-1X106 neural stem cells into the culture bottle, taking out the microcarrier grown with neural stem cells, removing the microcarrier, and rinsing cells to obtain neural stem cells. The porous microcarrier can enlarge the culture area. The alkaline fibroblast growth factor and epidermal growth factor can promote cell multiple fission and improve cell microenvironment, which is advantageous for multiple fission of neural stem cells.

A method for differentiating mesenchymal stem cells of bone marrow into neural cells comprises culturing the mesenchymal stem cells in a medium containing epidermal growth factor(EGF), basic fibroblast growth factor(bFGF) and hepatocyte growth factor(HGF), and the neural cells produced thereby can be employed for the treatment of a neural disease.

Methods for modulating neurogenesis in vitro and in vivo have been disclosed. The methods comprise contacting neural stem cells with an effective amount of a FTY720 compound. The neurogenesis may involve the modulation of proliferation, differentiation, migration or survival of a non-embryonic neural stem cells or progenitor cells. Also disclosed are methods for the prevention or treatment of neurological disorders comprising administering to a subject a therapeutically effective amount of a FTY720 compound. The disorders that can be treated include various nervous system disorders.

Methods and tools for identifying agents and conditions that modulate neurogenesis are disclosed. The disclosure also relates to methods and tools for identifying populations of neural stem cells suitable for transplantation.

Use of a substance that upon administration will lead to increased concentrations of growth hormone, such as growth hormone, a functionally equivalent analogue thereof or a substance that will increase the release of endogenous growth hormone, for the production of a medicinal product for treatment of abnormal conditions affecting neural stem cells, progenitor cells and/or cells derived from neural stem cells or progenitor cells, especially conditions affecting the oligodendroglia, astroglia, and/or neuronal cells. In vitro and in vivo methods for inducing lineage determination, propagating and/or inducing or maintaining the genesis of neurons, oligodendrocytes, astroglial cells from progenitor cells, stem cells and/or cells derived from said cells by administrating to the cells a substance that increases the concentration of growth hormone. Also a method of reducing the genesis of oligodendrocytes, neurons, astroglial cells from progenitor cells or stem cells, wherein a pharmaceutically effective amount of a substance that will lead to a decreased concentration of growth hormone or a functionally equivalent analogue thereof is administered to said patient.

The present invention is directed to a combination of therapeutic compounds and treatment methods and kits using the combination. In particular, one of the combination affects the NCca-ATP channel of neural tissue, including neurons, glia and blood vessels within the nervous system. Exemplary SUR1 and/or TRPM4 antagonists that inhibit the NCca-ATP channel may be employed in the combination. The combination therapy also employs one or more of a non-selective cation channel blocker and/or an antagonist of VEFG, NOS, MMP, or thrombin. Exemplary indications for the combination therapy includes the prevention, diminution, and/or treatment of injured or diseased neural tissue, including astrocytes, neurons and capillary endothelial cells, that is due to ischemia, tissue trauma, brain swelling and increased tissue pressure, or other forms of brain or spinal cord disease or injury, for example. In other embodiments, there are methods and compositions directed to antagonists of TRPM4, including at least for therapeutic treatment of traumatic brain injury, cerebral ischemia, central nervous system (CNS) damage, peripheral nervous system (PNS) damage, cerebral hypoxia, or edema, for example.

The present invention proposes formative agent of protein complex, in which a polyphenol is useful component, and the agent is useful as gene complex, cell adhesion inhibitor or immune tolerogen. The polyphenol of forming the agent is selected from catechin group consisting of epigallocatechin-gallate, tannic acids, or proanto-dianisidine, a protein of the protein complex is selected from proteins consisting of animal proteins composed of polypeptide chain of peptide-combined amino acids, vegetative proteins, nucleus proteins, glycogen proteins, lipo-proteins and metal proteins, the gene complex comprises by compositing genes by polyphenol catechins in order to introduce genes to cells of animals or human bodies, a cell composed of the cell adhesion inhibitor is selected from cells consisting of an animal cell including a stem cell, skin cell, mucosa cell, hepatocyte, islet cell, neural cell, cartilage cell, endothelial cell, epidermal cell, osteocyte or muscle cell isolated from human or animal organism, or sperm, ovum or fertilized egg of domestic animals or fishes and a tissue or an organ for transplantation of the immune tolerogen is selected from the tissue or the organ consisting of skin, blood vessel, cornea, kidney, heart, liver, umbilical cord, bowels, nerve, lung, placenta or pancreas.

The invention provides a cryopreservation method and a resuscitation method of neural stem cells (NSCs), and provides a cryopreserved NSC solution and a resuscitated NSC solution with cell survival rates higher than 90%. The solutions are prepared with the methods provided by the invention. Also, the invention provides a cryopreservation medium and a resuscitation medium used in the NSC cryopreservation method and resuscitation method.

The invention relates to a method for constructing a three-dimensional neural stem cell model in two steps by adopting the micro-fluidic technology. The method is characterized in that a rat tail collagen I is used as a three-dimensional support, a micro-pillar array type micro-fluidic chip is used as a culture platform, and a neural stem cell is cultured in two steps, wherein in the early culture stage, a culture medium for promoting the amplification of the neural stem cell is injected into a cell culture chamber, and in the later culture stage, a conditioned medium suitable for the growth of the neural stem cell and the daughter cells thereof is used, and a three-dimensional composite structure which is similar to a nerve tissue is formed by simulating the microenvironment of different neurogenesis stages in the body. The method provided by the invention is good in repeatability and can be used for construction a plurality of groups of samples. The adopted microfluidic culture system is in a microliter volume and can be regulated accurately, thus the amount of various high-cost cell growth factors, immunologic fluorescent antibodies and cell hormones used in the process of culturing the cell can be reduced greatly, and the cell culture cost can be lowered. The three-dimensional neural stem cell model is expected to be a nerve tissue substitute for screening a novel medicament or monitoring an environmental toxin.

The invention relates to a culture medium for preparing neural stem cells and an application of the culture medium. The culture medium for preparing the neural stem cells comprises a culture medium suitable for the growth of stem cells, and a cell signal pathway inhibitor which is selected from at least one of the following agents: a GSK (Glaxo Smith Klein) inhibitor, an MEK (Methyl Ethyl Ketone) inhibitor, a TGF (Transforming Growth Factor)-beta inhibitor, a ROCK inhibitor and a BMP inhibitor. The somatic cells are cultured by using the culture medium, especially the somatic cells for expressing the transcription regulator are cultured, so as to effectively transdifferentiate the somatic cells into neutral stem cells and the transdifferentiation time is greatly shortened.

The invention discloses methods of proliferation and differentiation of multipotent neural stem cells. Also provided are methods of making cDNA libraries and methods of screening biological agents which affect proliferation differentiation survival phenotype or function of CNS cells.

Three novel low molecular weight (LMW) polypeptide fragments of a proteolipid protein human PLP/DM20 are designated PIRP-M, PIRP-L and PIRP-J, and are growth factors for oligodendrocytes with anti-apoptotic activity. They are encoded by mRNA from an IRES. Fusion polypeptides of such a LMW polypeptide, DNA encoding the LMW polypeptide and fusion polypeptide, expression vectors comprising such DNA, and cells expressing such polypeptides, or pharmaceutical compositions thereof, are useful for stimulating neural stem cell differentiation, maturation along the oligodendrocytic pathway and proliferation of oligodendrocytes or precursors. These compositions can protect oligodendrocytes (and nonneural cells) from apoptotic death. Thus, the present composition is used to treat a disease or condition in which such differentiation, maturation and proliferation or inhibition of cell death, including remyelination or stimulation of oligodendroglia or Schwann cells, is desirable. Disorders include multiple sclerosis, trauma with Parkinson's-like symptoms, hypoxic ischerriia and spinal cord trauma.

The invention provides a method for treating CNS disorders by administering a neural stem cell composition and a mesenchymal stem cell composition on opposing sides of the blood brain barrier. The neural stem cell composition is administered to the central nervous system, while the mesenchymal stem cell composition is administered to the circulatory system, such as by intravenous injection. The method finds use in the treatment of degenerative GNS disorders, as well as traumatic CNS disorders such as stroke and spinal cord injury.

This invention relates to a method of selectively producing neural cells, including neurons or glial cells, in vitro or in vivo. Also provided are methods of treating or ameliorating neurodegenerative disease or medical conditions by producing neural cells. Thus, a combination of factors is used to achieve two steps: increasing the number of neural stem cells and instructing the neural stem cells to selectively become neurons or glial cells.

The present invention relates to VEGF-C or VEGF-D materials and methods for promoting growth and differentiation of neural stem cells, neuronal and neuronal precursor cells, oligodendrocytes and oligodendrocyte precursor cells and materials and methods for administering said cells to inhibit neuropathology.

The present invention relates to compounds and methods for inducing neuronal differentiation in normal neural stem cells and brain cancer stem cells. The methods may take place in vitro, such as in isolates from the adult mammalian brain, or in vivo. Compounds and methods described herein may find use in the treatment of neurodegenerative and psychiatric diseases, the repair and regeneration of the nervous system, and in treatment of neurologic malignancy.

Methods and agents are disclosed for modulating the interaction of β-catenin or γ-catenin with CBP or p300. Agents that increase the binding of CBP to β-catenin are associated with enhancing the β-catenin-related proliferation of adult stem cells, including hematopoietic stem cells, neural stem cells, skin stem cells, and pancreatic stem cells.