Abstract: The present invention is based on the surprising finding that Wnt7a, and other Wnt family members, are trafficked to extracellular vesicles (EVs) via interactions with coatomer proteins. Extracellular vesicle signal peptides (ESPs), each comprising at least one key Coatomer binding motif (CBM), are described, and these mediate EV trafficking of Wnt family members. The ESPs may be used to target other proteins for display on EVs. Herein is described an EV comprising: COPI, and a recombinant EV-directed polypeptide comprising: a cargo polypeptide, and an ESP comprising a CBM, wherein the cargo polypeptide is tethered to an external surface of the EV via the coatomer binding motif. Also described are recombinant EV-directed polypeptides comprising an ESP and a cargo. Additionally described are recombinant skeletal muscle-targeted EVs comprising a pay load polypeptide; and recombinant Wnts having mutated CBM or ESPs, which are less trafficked to EVs for production/recovery of free Wnts.

Abstract: The present disclosure provides a method for stimulating asymmetric division of at least some satellite stem cells in a patient suffering from a disease or disorder characterized by satellite cells having an inability, or a reduced ability, to assemble a functional dystrophin-associated glycoprotein complex (DGC) that results in an inability, or reduced ability, to establish cell polarity. The method includes administering to the patient a sufficient amount of an epidermal growth factor receptor (EGFR) pathway activator to stimulate asymmetric division of at least some satellite stem cells.

Abstract: There are provided compositions and methods for modulating stem cell division decisions, in particular, division symmetry. It has been demonstrated that wnt7a acts through frizzled-7 receptor expressed on the surface of adult stem cells, e.g. satellite stem cells, to activate the planar cell polarity (PCP) pathway, thereby promoting symmetrical expansion of stem cells. The compositions and methods of the invention are useful, for example, in modulating stem cell division symmetry in vitro and in vivo, in replenishing and expanding the stem cell pool, and in promoting the formation, maintenance, repair and regeneration of tissue.

Abstract: The present disclosure provides a method for stimulating asymmetric division of at least some satellite stem cells in a patient suffering from a disease or disorder characterized by satellite cells having an inability, or a reduced ability, to assemble a functional dystrophin-associated glycoprotein complex (DGC) that results in an inability, or reduced ability, to establish cell polarity. The method includes administering to the patient a sufficient amount of an epidermal growth factor receptor (EGFR) pathway activator to stimulate asymmetric division of at least some satellite stem cells.

Abstract: There are provided compositions and methods for modulating stem cell division decisions, in particular, division symmetry. It has been demonstrated that wnt7a acts through frizzled-7 receptor expressed on the surface of adult stem cells, e.g. satellite stem cells, to activate the planar cell polarity (PCP) pathway, thereby promoting symmetrical expansion of stem cells. The compositions and methods of the invention are useful, for example, in modulating stem cell division symmetry in vitro and in vivo, in replenishing and expanding the stem cell pool, and in promoting the formation, maintenance, repair and regeneration of tissue.

Abstract: There are provided compositions and methods for modulating stem cell division decisions, in particular, division symmetry. It has been demonstrated that wnt7a acts through frizzled-7 receptor expressed on the surface of adult stem cells, e.g. satellite stem cells, to activate the planar cell polarity (PCP) pathway, thereby promoting symmetrical expansion of stem cells. The compositions and methods of the invention are useful, for example, in modulating stem cell division symmetry in vitro and in vivo, in replenishing and expanding the stem cell pool, and in promoting the formation, maintenance, repair and regeneration of tissue.

Abstract: There are provided compositions and methods for modulating stem cell division, in particular, division symmetry. It has been demonstrated that Wnt7a polypeptide fragments promoting symmetrical expansion of stem cells. The compositions and methods of the invention are useful, for example, in modulating stem cell division symmetry in vitro, ex vivo, and in vivo, in replenishing and expanding the stem cell pool, and in promoting the formation, maintenance, repair and regeneration of tissue.

Abstract: The invention provides cell therapy compositions and associated methods. In particular embodiments, improved therapeutic cells and improved cell-based gene therapies for promoting cell or tissue formation, regeneration, repair or maintenance in a subject in need thereof are provided.

Abstract: There are provided compositions and methods for modulating stem cell division decisions, in particular, division symmetry. It has been demonstrated that wnt7a acts through frizzled-7 receptor expressed on the surface of adult stem cells, e.g. satellite stem cells, to activate the planar cell polarity (PCP) pathway, thereby promoting symmetrical expansion of stem cells. The compositions and methods of the invention are useful, for example, in modulating stem cell division symmetry in vitro and in vivo, in replenishing and expanding the stem cell pool, and in promoting the formation, maintenance, repair and regeneration of tissue.

Abstract: The present invention provides novel stem cells, nucleotide sequences and proteins therefrom. More specifically, the present invention provides Pax7+/Myf5? stem cells and methods for identifying and isolating them. Also provided is a MEGF10 nucleotide sequence and protein.

Abstract: The present invention relates to microRNAs (miRNAs) that are associated with obesity. The present invention is directed to methods, compounds, and compositions for preventing and treating obesity, as well as related diseases, using a microRNA inhibitor.

Abstract: There are provided compositions and methods for modulating stem cell division, in particular, division symmetry. It has been demonstrated that Wnt7a polypeptide fragments promoting symmetrical expansion of stem cells. The compositions and methods of the invention are useful, for example, in modulating stem cell division symmetry in vitro, ex vivo, and in vivo, in replenishing and expanding the stem cell pool, and in promoting the formation, maintenance, repair and regeneration of tissue.

Abstract: The present invention relates to microRNAs (miRNAs) that are associated with obesity. The present invention is directed to methods, compounds, and compositions for preventing and treating obesity, as well as related diseases, using a microRNA inhibitor.

Abstract: The present invention provides novel stem cells, nucleotide sequences and proteins therefrom. More specifically, the present invention provides Pax7+/Myf5? stem cells and methods for identifying and isolating them. Also provided is a MEGF10 nucleotide sequence and protein.

Abstract: There are provided compositions and methods for modulating stem cell division decisions, in particular, division symmetry. It has been demonstrated that wnt7a acts through frizzled-7 receptor expressed on the surface of adult stem cells, e.g. satellite stem cells, to activate the planar cell polarity (PCP) pathway, thereby promoting symmetrical expansion of stem cells. The compositions and methods of the invention are useful, for example, in modulating stem cell division symmetry in vitro and in vivo, in replenishing and expanding the stem cell pool, and in promoting the formation, maintenance, repair and regeneration of tissue.

Abstract: The present invention provides novel stem cells, nucleotide sequences and proteins therefrom. More specifically, the present invention provides Pax7+/Myf5? stem cells and methods for identifying and isolating them. Also provided is a MEGF10 nucleotide sequence and protein.

Abstract: The present invention provides novel stem cells, nucleotide sequences and proteins therefrom. More specifically, the present invention provides Pax7+/Myf5? stem cells and methods for identifying and isolating them. Also provided is a MEGF10 nucleotide sequence and protein.

Abstract: The present invention provides novel stem cells, nucleotide sequences and proteins therefrom. More specifically, the present invention provides Pax7+/Myf5? stem cells and methods for identifying and isolating them. Also provided is a MEGF10 nucleotide sequence and protein.

Abstract: The present invention provides cells transformed with a nucleotide sequence encoding Pax7, Pax3 or both. The present invention also pertains to Pax-encoding vector that comprises a sequence encoding Pax7, Pax3 or an active variant or fragment thereof, which can be used to induce myogenic differentiation of stem cells. The present invention further pertains to methods of preparing the Pax-encoding vector. Also provided is a method of inducing myogenic differentiation in stem cells and treating a subject with the cells.

Abstract: This invention provides helper-dependent adenovirus cloning vectors and helper adenoviruses, and methods for making and Using such preparations, wherein the helper adenoviruses contain recombinase target sites that are useful in reducing the level of contamination of helper virus in helper-dependent adenovirus vector preparations.