摘要:
The invention provides in vitro cell culture compositions consisting of neurospheres and culture medium, wherein the neurospheres consist of undifferentiated cells that are nestin+, glial fibrillary acid protein (GFAP)−, neurofilament (NF)−, and myelin basic protein (MBP)− and are not nestin−.
摘要:
cDNA libraries may be obtained from neural cell cultures produced by using growth factors to induce the proliferation of multipotent neural stem cells. The libraries may be obtained from both cultured normal and dysfunctional neural cells and from neural cell cultures at various stages of development. This information allows for the identification of the sequence of gene expression during neural development and can be used to reveal the effects of biological agents on gene expression in neural cells. Additionally, nucleic acids derived from dysfunctional tissue can be compared with that of normal tissue to identify genetic material which may be the cause of the dysfunction. This information could then be used in the design of therapies to treat the neurological disorder. A further use of the technology would be in the diagnosis of genetic disorders or for use in identifying neural cells at a particular stage in development.
摘要:
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.
摘要:
Multipotent neural stem cell (MNSC) progeny are induced to generate cells of the hematopoietic system by placing the MNSC progeny in a hematopoietic-inducing environment. The hematopoietic-inducing environment can be either ex vivo or in vivo. A mammal's circulatory system provides an in vivo environment that can induce xenogeneic, allogeneic, or autologous MNSC progeny to generate a full complement of hematopoietic cells. Transplantation of MNSC progeny provides an alternative to bone marrow and hematopoietic stem cell transplantation to treat blood-related disorders.
摘要:
A method is described for inducing in vivo proliferation of precursor cells located in mammalian neural tissue by administering to the mammal a fibroblast growth factor and at least one additional growth factor selected from the group consisting of epidermal growth factor, transforming growth factor alpha, and amphiregulin. The method can be used to replace damaged or missing neurons and/or glia. Another method is described for transplanting multipotent neural stem cell progeny into a mammal. The method comprises the steps of administering growth factors to a mammal to induce in vivo proliferation of neural precursor cells, removing the precursor cell progeny from the mammal, culturing the removed cells in vitro in the presence of one or more growth factors that induces multipotent neural stem cell proliferation, and implanting the multipotent neural stem cell progeny into the mammal.
摘要:
A method for producing genetically modified neural cells comprises culturing cells derived from embryonic, juvenile, or adult mammalian neural tissue with one or more growth factors that induce multipotent neural stem cells to proliferate and produce multipotent neural stem cell progeny which include more daughter multipotent neural stem cells and undifferentiated progeny that are capable of differentiating into neurons, astrocytes, and oligodendrocytes. The proliferating neural cells can be transfected with exogenous DNA to produce genetically modified neural stem cell progeny. The genetic modification can be for the production of biologically useful proteins such as growth factor products, growth factor receptors, neurotransmitters, neurotransmitter receptors, neuropeptides and neurotransmitter synthesizing genes. The multipotent neural stem cell progeny can be continuously passaged and proliferation reinitiated in the presence of growth factors to result in an unlimited supply of neural cells for transplantation and other purposes. Culture conditions can be provided that induce the genetically modified multipotent neural stem cell progeny to differentiate into neurons, astrocytes, and oligodendrocytes in vitro.
摘要:
Multipotent neural stem cell (MNSC) progeny are induced to generate cells of the hematopoietic system by placing the MNSC progeny in a hematopoietic-inducing environment. The hematopoietic-inducing environment can be either ex vivo or in vivo. A mammal's circulatory system provides an in vivo environment that can induce xenogeneic, allogeneic, or autologous MNSC progeny to generate a full complement of hematopoietic cells. Transplantation of MNSC progeny provides an alternative to bone marrow and hematopoietic stem cell transplantation to treat blood-related disorders.
摘要:
The invention provides methods for producing myelin forming cells from multipotent self-renewing central nervous system neural stem cells as well as methods of using one or more cells from a multipotent self-renewing central nervous system neural stem cell population to form patches of myelin. Also provided are cell culture systems for forming patches of myelin and methods of treating demyelination diseases in a mammal.
摘要:
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.