Abstract: The present disclosure provides methods for the detection of target specific antibodies in samples. The methods include the detection of pathogen-specific antibodies, such as SARS-CoV-2 specific antibodies. Also included is a kit for use for the detection of pathogen specific antibodies in a sample. In one aspect, the disclosure provides a method of detecting the presence of a target specific antibody in a sample by (i) contacting the sample with a test cell comprising one or more exogenous nucleic acid sequences encoding one or more target proteins; and (ii) detecting the presence of the target specific antibody in the sample by contacting the immune complex of (i) with an anti-immunoglobulin (Ig) antibody, and detecting the anti-immunoglobulin (Ig) antibody, thereby detecting the presence of a target specific antibody.

Abstract: The present invention relates to the field of extracellular vesicles. More specifically, the present invention provides methods and compositions for using extracellular vesicles as a vector for nucleic acid treatment in vivo of various diseases. In a specific embodiment, the present invention provides an extracellular vesicle isolated from a cell comprising one or more microRNAs (miRNAs) that have been loaded ex vivo into the vesicle so that the miRNAs are present in a higher concentration than when measured in the same extracellular vesicle isolated directly from the cell. In another embodiment, the present invention provides a method for treating cholangiocarcinoma in a subject comprising the step of administering to the subject a plurality of exosomes comprising miR-195.

Abstract: The present invention relates to the field of extracellular vesicles. More specifically, the present invention provides methods and compositions for using extracellular vesicles as a vector for nucleic acid treatment in vivo of various diseases. In a specific embodiment, the present invention provides an extracellular vesicle isolated from a cell comprising one or more microRNAs (miRNAs) that have been loaded ex vivo into the vesicle so that the miRNAs are present in a higher concentration than when measured in the same extracellular vesicle isolated directly from the cell. In another embodiment, the present invention provides a method for treating cholangiocarcinoma in a subject comprising the step of administering to the subject a plurality of exosomes comprising miR-195.

Abstract: The present invention relates to the field of extracellular vesicles. More specifically, the present invention provides methods and compositions for using extracellular vesicles as a vector for nucleic acid treatment in vivo of various diseases. In a specific embodiment, the present invention provides an extracellular vesicle isolated from a cell comprising one or more microRNAs (miRNAs) that have been loaded ex vivo into the vesicle so that the miRNAs are present in a higher concentration than when measured in the same extracellular vesicle isolated directly from the cell. In another embodiment, the present invention provides a method for treating cholangiocarcinoma in a subject comprising the step of administering to the subject a plurality of exosomes comprising miR-195.