74results about "Endocrine organ cells" patented technology

Disclosed herein are reagent-cell complexes comprising one or more definitive endoderm cells. Also described herein are compositions for detecting definitive endoderm. Method of enriching, isolating and / or purifying definitive endoderm cells are also disclosed.

Disclosed herein are reagent-cell complexes comprising one or more definitive endoderm cells. Also described herein are compositions for detecting definitive endoderm. Method of enriching, isolating and / or purifying definitive endoderm cells are also disclosed.

Compositions and methods are provided for culturing in vitro potentially regenerative cells (PRCs) from which functional tissue-organs are regenerated. In one aspect of the invention, a tissue culture medium is provided which comprises at least 50% of water and a sterol compound that is dissolved in a fatty acid-containing oil at a concentration at least 0.1% by weight based on the weight of the oil and added to the water. The culture medium can be used to culture PRCs that are isolated from the body of a mammal to generate functional tissue-organs in vitro with substantially the same physiological structure and function as the corresponding ones existing in vivo and in situ. The cultured PRCs, tissues, and tissue-organs can serve as valuable models for scientific investigation in life sciences, nutraceutical discovery, drug screening, pharmacokinetic studies, medical devices and tissue / organ transplantation.

The invention provides a method for separating and culturing pituitary gland cells of a rat. The method comprises steps as follows: (1), an 8d male SD rat is selected and subjected to anesthesia execution; (2), the anesthetized rat is fixed on a board with the ventral side facing upwards, the pituitary gland of the rat is taken out under the sterile condition, put in a pre-cooled PBS (poly(butylene succinate)) liquid and washed repeatedly, bloodstain is removed, and pituitary gland envelope is removed; (3), the pituitary gland is cut into 1 mm*1 mm fragments by ophthalmic scissors in the pre-cooled PBS liquid under the sterile condition; (4), pre-heated III type collagenase is combined with neutral enzyme for mixed digestion; (5), the digestion is stopped, filtering is performed, a filtrate is collected and centrifuged, a supernatant is abandoned, a culture medium is added for resuspension, and the operation is repeated three times; (6), a 24-hole culture plate is inoculated with cells for culture; (7), the cells cultured for 7d are subjected to trypsin digestion and then are purified by a screen again, a supernatant is abandoned after centrifugation, the cells are resuspended, and the treated culture plate is inoculated with the cells; (8), the cells are subjected to cell immunofluorescence identification. The method for separating and culturing the pituitary gland cells of the rat is simple to operate, the obtained pituitary gland cells are high in survival rate and good in activity, can be used for establishing a cell experimental model in vitro and meet the requirement of pituitary gland cell experiments.

Embodiments herein relate in vitro methods of stem cell differentiation into thyroid hormone producing cells and tissues, and methods of use of these cells.

The invention provides for efficient methods for generating populations of endoderm cells and / or differentiated cells derived from endoderm cells (e.g., hepatic cells, pancreatic precursor cells, pancreatic cells, intestinal progenitor cells, intestinal cells, lung progenitor cells, lung cells, etc.). Also provided are compositions of endoderm cells and differentiated cells derived from endoderm cells (e.g., hepatic cells, pancreatic precursor cells, pancreatic cells, intestinal progenitor cells, intestinal cells, lung progenitor cells, lung cells, etc.) and methods of using such cells.

The invention is directed to immunologically privileged cells, e.g., autologous, allogeneic, and xenogeneic intermediate lobe pituitary cells, for delivering polypeptides, e.g., insulin, to a subject, and to methods of using the same.

Disclosed herein are methods for generating SC-β cells, and isolated populations of SC-β cells for use in various applications, such as cell therapy.

A population of enteroendocrine cells (EEC) is obtained from a mammalian post-natal cell population, such as a population including post-natal stem cells, by treating the population with a plurality of small molecules that upregulate ChgA and promote differentiation of the cells to form the enteroendocrine cells. The upregulation of ChgA is such that the fraction of cells expressing CGA in the obtained cell population, as measured by a ChgA Immunostaining Assay, is at least about 1.5%. Small molecules that can be used to differentiate the post-natal cells into the enteroendocrine cells can include at least one of a Wnt activator, a Notch inhibitor, a Wnt inhibitor, a MEK / ERK inhibitor, a growth factor, a HDAC inhibitor, a Histone Methylation Inhibitor, a Tgf-β inhibitor, and a NeuroD1 activator. Also, the insulin expression of a population of mammalian cells is increased by treating the population with a plurality of small molecules that increase the insulin expression.

The invention involves generating a T cell response to subdominant antigens and using the cells to therapeutically change the cellular homeostasis and nature of the immune response. In a preferred embodiment, the cells are generated outside of the patient avoiding the influence of the patient's immunologic milieu. By stimulating and growing the T cells from a patient in a tissue culture to one or more subdominant antigens and the transplanting them into the patient, if enough cells are expanded and transplanted, the transplanted cells overwhelm the endogenous dominant T cells in the response to either break or induce immune tolerance or otherwise modify the immune response to the cells or organism expressing that antigen. When the memory cells are established they are then reflective of this new immunodominance hierarchy so that the desired therapeutic effect is long lasting. In effect, the transplantation exogenously generated T cells reactive to the subdominant antigens is recapitulating priming and rebalancing the patient's immune response to target previously subdominant antigens in the cells or organism to produce a therapeutic benefit.

The present invention provides a method for inducing adenohypophysis or precursor tissue thereof in vitro from human pluripotent stem cells. The method includes culturing an aggregate of human pluripotent stem cells in suspension in a medium containing a bone morphogenetic protein signal transduction pathway activating substance and a substance acting on the Shh signal pathway to obtain a human cell aggregate containing a hypothalamus neuroepithelial tissue and a surface ectoderm, and further culturing the obtained human cell aggregate containing the hypothalamus neuroepithelial tissue and the surface ectoderm in suspension in a medium containing a bone morphogenetic protein signal transduction pathway activating substance and a substance acting on the Shh signal pathway to induce formation of hypophysial placode and / or Rathke's pouch in the surface ectoderm, thus obtaining a human cell aggregate containing 1) hypothalamus neuroepithelial tissue, and 2) hypophysial placode and / or Rathke's pouch.

Provided is a method for efficiently inducing differentiation from human pluripotent stem cells into hypothalamic neurons. Also provided is a method for constructing a cellular structure that integrates pituitary tissue and hypothalamic tissue from human pluripotent stem cells. A cellular structure including hypothalamic tissue is obtained by a method including a step for suspension culturing human pluripotent stem cell spheroids in a medium including a low concentration of an osteogenic factor signaling pathway activator and a low concentration of a substance capable of acting on the Shh signaling pathway, and a step for also suspension culturing the cell spheroids obtained in that step in a medium including a low concentration of a substance capable of acting on the Shh signaling pathway. A cellular structure including hypothalamic tissue and pituitary tissue is also obtained by a method including a step for suspension culturing human pluripotent stem cell spheroids in a medium including an osteogenic factor signaling pathway activator and a substance capable of acting on the Shh signaling pathway, a step for also suspension culturing the cell spheroids formed in that step in a medium including an osteogenic factor signaling pathway activator and a substance capable of acting on the Shh signaling pathway, and a step for suspension culturing the cell spheroids obtained in thatstep in a medium suitable for simultaneous pituitary and hypothalamic induction.