Provided are an animal cell capable of producing a target protein with high productivity, a method for producing the animal cell, and a method for producing a target protein using the animal cell. According to an aspect of the present invention, there are provided an animal cell that has a gene encoding a target protein and a foreign gene encoding SNAT2 and linked to a promoter and overexpresses SNAT2; a method for producing the animal cell; and a method for producing a target protein using the animal cell.

Genetically modified non-human animals and methods and compositions for making and using the same are provided, wherein the genetic modification comprises a humanization of an endogenous signal-regulatory protein gene, in particular a humanization of a SIRPα gene. Genetically modified mice are described, including mice that express a human or humanized SIRPα protein from an endogenous SIRPα locus.

Genetically modified non-human animals and methods and compositions for making and using the same are provided, wherein the genetic modification comprises a humanization of an endogenous signal-regulatory protein gene, in particular a humanization of a SIRPα gene. Genetically modified mice are described, including mice that express a human or humanized SIRPα protein from an endogenous SIRPα locus.

The present invention enables fabrication and mass production of a bubble-jetting chip that includes a desired number of bubble jetting portions of the same size having bubble-jetting outlets of the same size. Mass production is enabled by fabricating a bubble-jetting chip comprising a substrate and a bubble-jetting portion formed on the substrate, the bubble-jetting portion comprising: an electrode that is formed of a conductive material; an insulating portion that is formed of an insulating photosensitive resin, is provided so as to sandwich the electrode, and includes an extended section that extends beyond the tip of the electrode; and a space that is formed between the extended section of the insulating portion and the tip of the electrode.

The present invention enables fabrication and mass production of a bubble-jetting chip that includes a desired number of bubble jetting portions of the same size having bubble-jetting outlets of the same size. Mass production is enabled by fabricating a bubble-jetting chip comprising a substrate and a bubble-jetting portion formed on the substrate, the bubble-jetting portion comprising: an electrode that is formed of a conductive material; an insulating portion that is formed of an insulating photosensitive resin, is provided so as to sandwich the electrode, and includes an extended section that extends beyond the tip of the electrode; and a space that is formed between the extended section of the insulating portion and the tip of the electrode.

Active loading of extracellular vesicles (EVs) with an exogenous molecule without damaging the extracellular vesicles is provided. A composition comprising a population of extracellular vesicles loaded with an exogenous molecule, which have maintained their integrity, original endogenous cargo and functionality, compared to unloaded controls is also provided. Extracellular vesicles are derived from a stem cell, preferably an adult stem cell, or from a biological fluid, a conditioned cell medium or a tissue culture medium.

A method of providing therapeutic treatment by delivering therapeutic aptamers locally to a target site using microneedles includes providing complementary sequence modified microneedles by reacting a complementary sequence (CS) with a polymer thereby forming a covalent bond between the polymer and the CS, forming microneedle patches using an initial casting solution consisting of the polymer, the therapeutic aptamer, and a covalent bond between a complementary sequence (CS) and the polymer, thereby loading the therapeutic aptamer into the microneedles, each microneedle having a base, shaft and tip, physically binding the therapeutic aptamer to the CS, inserting the microneedles into the tissue such that the tips and shafts are embedded into the target site and the bases are on a surface of the target site, and sustained release of the aptamer to the target site due to dissociation of the aptamer from the CS over time.

An apparatus for delivering a target substance according to the present invention comprises: a tube through which a solution including cells or extracellular vesicles and a target substance passes; and a shock-wave generator which is arranged on one side of the tube and applies extracorporeal shock-waves to the solution, thereby inserting the target substance into the cells or the extracellular vesicles. In such an apparatus for delivering a target substance, by introducing a target substance into cells or extracellular vesicles in a tube by applying extracorporeal shock-waves, delivering a target substance into a large amount of cells or extracellular vesicles is rapidly performed, and thus it is industrially easy to mass-produce a therapeutic agent.

An apparatus for delivering a target substance according to the present invention comprises: a tube through which a solution including cells or extracellular vesicles and a target substance passes; and a shock-wave generator which is arranged on one side of the tube and applies extracorporeal shock-waves to the solution, thereby inserting the target substance into the cells or the extracellular vesicles. In such an apparatus for delivering a target substance, by introducing a target substance into cells or extracellular vesicles in a tube by applying extracorporeal shock-waves, delivering a target substance into a large amount of cells or extracellular vesicles is rapidly performed, and thus it is industrially easy to mass-produce a therapeutic agent.

The present invention relates to methods for transfecting cells. In particular, the present invention relates to methods of transfecting primordial germ cells in avians, and to methods of breeding avians with modified traits.