Abstract:
The present invention relates to a method for preparing commercial scale quantities of human functional Betacells and to the establishmentofcell lines. It also relates to a method of diagnosis using Beta cell tumorsor cells derived thereof. The method comprisessub-transplantation procedure to enrich the graft in proliferating Betacells, allowingtogenerate human Betacell lines. Such lines express little amount of insulin and have a gene expression profile that resembles to adult Betacells. In addition, the human Betacell lines are able to normalize glycemia of diabetic mice when transplanted,demonstrating their insulin secretion capabilities.
Abstract:
Solutions and suspensions comprising polymerized hemoglobin derived from human blood are disclosed. The solutions and suspensions may comprise cell culture medium, an enzyme (such as a protease), and/or a buffer. Processes of preparing the solutions and suspensions are also disclosed. The solutions and suspensions may be employed in methods of isolating mammalian cells, such as pancreatic islets, methods of preserving mammalian tissue and organs, methods of aiding the recovery of mammalian cells following their isolation, methods of maintaining mammalian cells, methods of propagating mammalian cells, and methods of treating a mammal with diabetes.
Abstract:
Disclosed herein are methods of producing pancreatic hormone-expressing cells by first differentiating pluripotent cells in cell culture so as to produce endodermal cells, the endodermal cells being competent to further differentiate into hormone-expressing cells capable of secreting at least one pancreatic hormone in response to a physiological signal, and then, transplanting the cultured endodermal cells into an organism, such as an organism in need of an endocrine cell therapy.
Abstract:
The invention relates to methods that allow for the efficient differentiation to form pancreatic endoderm cells from pluripotent stem cells such as human embryonic stem cells and definitive endoderm cells. The invention is directly applicable to the ultimate generation of pancreatic beta cells that could be used as part of a therapy to treat or even cure diabetes. Additionally, the present invention may be used to generate liver endoderm cells from human embryonic stem cells and definite endoderm cells as well. This invention relates to a method for generating definitive endoderm and pancreatic endoderm cells from stem cells, preferably human embryonic stem cells using defined media in the absence of feeder cells. A simply two step procedure to provide pancreatic endoderm cells from embryonic stem cells represents further embodiments of the present invention.
Abstract:
The present invention relates to a method of diagnosis of neonatal diabetes, congenital hypothyroidism and congenital glaucoma, comprising detecting the presence of a mutation in the GLIS3 gene and to a method for preparing functional pancreatic beta-cells by culturing human multipotent or pluripotent cells, such as embryonic stem cells (ES-cells) or human somatic stem cells in a culture medium comprising a effective amount of GLIS3 to induce said cells differenciation into functional pancreatic beta-cells producing insulin. It also relates to a pharmaceutical composition comprising GLIS3 as active ingredient.
Abstract:
The generation of pancreatic islet-like cells from isolated monocyte-derived stem cells (MDSCs) is provided. MDSCs may be differentiated into pancreatic islet cells by contacting the MDSCs with a differentiation factor or factors. Compositions comprising pancreatic islet cells and methods of using them are also provided.
Abstract:
The invention relates to methods for generating insulin secreting cells from precursor stem cells or from adult pancreatic exocrine cells by exposing them to a nucleic acid molecule encoding neurogenin3 (ngn3) or NeuroD/ ß2. The methods of the invention are useful, for example, for generation of glucose sensitive insulin-secreting ß-cells suitable for transplantation, as well as for in situ development of insulin-secreting cells in a patient in need thereof. Further, the method of the invention relates to methods for preventing premature differentiation of precursor stem cells into insulin-secreting ß-cells. Still further, the invention relates to assay methods for identification of compounds that prevent or activate ß-cell differentiation.
Abstract:
Disclosed herein are methods of identifying one or more differentiation factors that are useful for differentiating cells in a cell population comprising definitive endoderm cells into cells which are capable of forming tissues and/or organs that are derived from the gut tube.
Abstract:
The present invention is directed to the use of Bridge-1 polynucleotides and Bridge-1 polypeptides, as well as activators and inhibitors of Bridge-1 activity, in the diagnosis and treatment of Bridge-1 mediated disorders, including diabetes.