Abstract: Described herein are methods for the production of extracellular vesicles comprising culturing a population of producer cells in single-cell suspension, wherein the cells are cultured in chemically-defined culture medium, wherein the culture medium lacks animal-derived serum and animal-derived components; and obtaining from the cell culture an extracellular vesicle preparation comprising extracellular vesicles. In certain embodiments, the methods comprise perfusion culturing methods, including single-cell perfusion culturing methods and batch-refeed culturing methods. The methods described herein are a significant improvement over the state of the art and fulfills an unmet need in the field of extracellular vesicle manufacturing and quality control.

Abstract: The invention relates to isolation of novel ?-actin and ribosomal protein S21 (rpS21) promoters and uses thereof. In particular, this invention features nucleotide sequences for rodent ?-actin promoters including, hamster, rat, and mouse, and hamster rpS21 promoter.

Abstract: The invention relates to isolation of novel ?-actin promoters and uses thereof. In particular, this invention features nucleotide sequences for rodent ?-actin promoters, including rat ?-actin promoter.

Abstract: Described herein are methods for the production of extracellular vesicles comprising culturing a population of producer cells in single-cell suspension, wherein the cells are cultured in chemically-defined culture medium, wherein the culture medium lacks animal-derived serum and animal-derived components; and obtaining from the cell culture an extracellular vesicle preparation comprising extracellular vesicles. In certain embodiments, the methods comprise perfusion culturing methods, including single-cell perfusion culturing methods and batch-refeed culturing methods. The methods described herein are a significant improvement over the state of the art and fulfills an unmet need in the field of extracellular vesicle manufacturing and quality control.

Abstract: The invention relates to isolation of novel ?-actin promoters and uses thereof. In particular, this invention features nucleotide sequences for rodent ?-actin promoters including ?-actin promoter.

Abstract: The invention relates to isolation of novel ?-actin and ribosomal protein S21 (rpS21) promoters and uses thereof. In particular, this invention features nucleotide sequences for rodent ?-actin promoters including, hamster, rat, and mouse, and hamster rpS21 promoter.

Abstract: The invention relates to isolation of novel ?-actin and ribosomal protein S21 (rpS21) promoters and uses thereof. In particular, this invention features nucleotide sequences for rodent ?-actin promoters including, hamster, rat, and mouse, and hamster rpS21 promoter.

Abstract: The invention relates to isolation of novel ?-actin and ribosomal protein S21 (rpS21) promoters and uses thereof. In particular, this invention features nucleotide sequences for rodent ?-actin promoters including, hamster, rat, and mouse, and hamster rpS21 promoter.

Abstract: The invention relates to isolation of novel ?-actin and ribosomal protein S21 (rpS21) promoters and uses thereof. In particular, this invention features nucleotide sequences for rodent ?-actin promoters including, hamster, rat, and mouse, and hamster rpS21 promoter.

Abstract: The invention relates to isolation of novel ?-actin and ribosomal protein S21 (rpS21) promoters and uses thereof. In particular, this invention features nucleotide sequences for rodent ?-actin promoters including, hamster, rat, and mouse, and hamster rpS21 promoter.

Abstract: Genetic regulatory elements which effect anoxic induction of a DNA molecule in mammalian cells exposed to anoxia are identified. The genetic regulatory elements, designated mammalian anoxia-responsive elements, when operably linked to a DNA molecule and basal promoter regulate the transcription of the DNA molecule in response to anoxia. The invention relates to recombinant vectors useful for introduction into mammalian cells, and the selective expression in mammalian cells exposed to anoxic conditions. Also provided are methods of using such vectors.