Abstract: present invention relates to: a composition for promoting neurogenesis, containing extracellular vesicles prepared by a novel preparation method and derived from three-dimensional spheroid-type cell aggregate; and a neurogenesis promotion method. Extracellular vesicles prepared by a novel preparation method, of the present invention, can improve neuroplasticity by inducing neurogenesis, neuronal differentiation or neural circuit restoration, and thus can be effectively used in the treatment of various diseases requiring neurogenesis.

Abstract: The present invention relates to a composition, for freeze-dry protecting extracellular vesicles, capable of preserving the function and characteristics of extracellular vesicles, and an extracellular vesicle freeze-drying method using same. Trehalose and sucrose of the present invention are added to an extracellular vesicle freeze-drying process to solve the problems of crystal growth and redissolution capacity degradation, which are problems in an existing freeze-dry protective agent, and also maintain the unique marker, functional factor expressions and therapeutic effects of the extracellular vesicles, and thus may be variously utilized for producing various therapeutic agents using extracellular vesicles.

Abstract: The present invention relates to: a method in which extracellular vesicles with improved therapeutic efficacy are produced from a three-dimensional spheroid-type cell aggregate produced using a microwell having a particular structure; and extracellular vesicles produced by the production method. When the method for producing extracellular vesicles, according to the present invention, is used, extracellular vesicles having enhanced efficacy can be mass-produced, and the produced extracellular vesicles include higher levels of various efficiency factors than existing extracellular vesicles and exhibit uniform characteristics without difference between donors, and thus can be used for various purposes in the medical industry.

Abstract: Provided are a method for producing stem cell-derived extracellular vesicles by using a three-dimensional cell culture process, use of three-dimensional cell aggregates of stem cells in producing extracellular vesicles, a culture of three-dimensional cell aggregates of stem cells comprising a high concentration of extracellular vesicles, and a pharmaceutical composition comprising the culture.

Abstract: Provided are a method for producing stem cell-derived extracellular vesicles by using a three-dimensional cell culture process, use of three-dimensional cell aggregates of stem cells in producing extracellular vesicles, a culture of three-dimensional cell aggregates of stem cells comprising a high concentration of extracellular vesicles, and a pharmaceutical composition comprising the culture.

Abstract: The present invention provides a novel use of N1-cyclic amine-N5-substituted biguanide derivatives for preparing a medicine for preventing or treating fibrosis. The N1-cyclic amine-N5-substituted biguanide derivatives according to the present invention are capable of effectively inhibiting fibrosis by effectively suppressing the EMT.

Abstract: The present invention provides a novel use of N1-cyclic amine-N5-substituted biguanide derivatives for preparing a medicine for preventing or treating fibrosis. The N1-cyclic amine-N5-substituted biguanide derivatives according to the present invention are capable of effectively inhibiting fibrosis by effectively suppressing the EMT.