Abstract: A method of producing plant virus-like particles includes freeze drying an aqueous solution of plant virus particles to produce a substantially RNA-free plant virus-like particles.

Abstract: Provided herein is a synthetic viral particle that positive control for COVID assays, along with methods for making and using the viral particle.

Abstract: A method of producing plant virus-like particles includes freeze drying an aqueous solution of plant virus particles to produce a substantially RNA-free plant virus-like particles.

Abstract: A rod-shaped plant virus having an interior surface and an exterior surface, and at least one imaging agent that is linked to the interior and/or exterior surface is described. The rod-shaped viruses can be combined into larger spherical nanoparticles. A rod-shaped plant virus or spherical nanoparticles including an imaging agent can be used in a method of generating an image of a tissue region of a subject such as a tumor or atherosclerotic tissue by administering the virus particle to the subject and generating an image of the tissue region of the subject to which the virus particle has been distributed.

Abstract: Disclosed herein, in certain embodiments, are engineered virus-like particles and compositions that comprise an oligodeoxynucleotide (ODN) for the treatment of a disease or condition. In some embodiments, also disclosed herein are methods of inducing phagocytosis of a target cell and methods of immune modulation.

Abstract: A method of non-covalently loading a plant picornavirus is described. The method includes contacting a plant picornavirus in solution with a molar excess of a cargo molecule to load the plant picornavirus with the cargo molecule, and then purifying the loaded plant picornavirus. Examples of cargo molecules include imaging agents, antitumor agents, and antiviral agents. Loaded plant picornaviruses prepared in this manner can be used to delivering cargo molecule to cells.

Abstract: Disclosed are devices, systems and methods for in situ payload delivery via a degradable microneedle. In some aspects, a microneedle therapeutic payload delivery device includes a substrate; an activation particle; and one or more degradable microneedle structures coupled to the substrate and including a polymeric matrix structured to embed the activation microparticle and one or more therapeutic payloads, the one or more degradable microneedle structures each including an exterior wall spanning outward from a base surface and forming an apex at a terminus point of the exterior wall, wherein the polymeric matrix of a microneedle structure of the one or more degradable microneedle structures is degradable under an environmental parameter of a biofluid surrounding the microneedle structure to dissolve and allow the one or more therapeutic payloads and the activation particle to the surrounding biofluid.

Abstract: The present disclosure provides a method of DDCE-MRF. The method can include: a) introducing two or more contrast agents to a region of interest (ROI) of a subject, the two or more contrast agents having different relaxivities; b) measuring a T1 relaxation time and a T2 relaxation time for locations within the ROI using magnetic resonance fingerprinting (MRF); c) determining, using equations that relate the different relaxivities, the T1 relaxation time, the T2 relaxation time, and concentrations of the two or more contrast agents, the concentrations of the two or more contrast agents for each of the locations within the ROI; and d) producing an image depicting the ROI based, at least in part, on the concentrations of the two or more contrast agents.

Abstract: A method of producing plant virus-like particles includes freeze drying an aqueous solution of plant virus particles to produce a substantially RNA-free plant virus-like particles.

Abstract: A method of non-covalently loading a plant picornavirus is described. The method includes contacting a plant picornavirus in solution with a molar excess of a cargo molecule to load the plant picornavirus with the cargo molecule, and then purifying the loaded plant picornavirus. Examples of cargo molecules include imaging agents, antitumor agents, and antiviral agents. Loaded plant picornaviruses prepared in this manner can be used to delivering cargo molecule to cells.

Abstract: Provided herein is a chimeric Potato virus X (PVX) filament conjugated to a therapeutic agent, a fusogenic peptide or a nucleolin-specific peptide ligand. In one aspect, they additionally comprise encapsulating a nucleic acid. Also provided are methods for use of the compositions diagnostically and therapeutically.

Abstract: A rod-shaped plant virus having an interior surface and an exterior surface, and at least one imaging agent that is linked to the interior and/or exterior surface is described. The rod-shaped viruses can be combined into larger spherical nanoparticles. A rod-shaped plant virus or spherical nanoparticles including an imaging agent can be used in a method of generating an image of a tissue region of a subject such as a tumor or atherosclerotic tissue by administering the virus particle to the subject and generating an image of the tissue region of the subject to which the virus particle has been distributed.

Abstract: A rod-shaped plant virus having an interior surface and an exterior surface, and at least one imaging agent that is linked to the interior and/or exterior surface is described. The rod-shaped viruses can be combined into larger spherical nanoparticles. A rod-shaped plant virus or spherical nanoparticles including an imaging agent can be used in a method of generating an image of a tissue region of a subject such as a tumor or atherosclerotic tissue by administering the virus particle to the subject and generating an image of the tissue region of the subject to which the virus particle has been distributed.

Abstract: A method of non-covalently loading a plant picornavirus is described. The method includes contacting a plant picornavirus in solution with a molar excess of a cargo molecule to load the plant picornavirus with the cargo molecule, and then purifying the loaded plant picornavirus. Examples of cargo molecules include imaging agents, antitumor agents, and antiviral agents. Loaded plant picornaviruses prepared in this manner can be used to delivering cargo molecule to cells.

Abstract: A method of producing plant virus-like particles includes freeze drying an aqueous solution of plant virus particles to produce a substantially RNA-free plant virus-like particles.

Abstract: A method of non-covalently loading a plant picornavirus is described. The method includes contacting a plant picornavirus in solution with a molar excess of a cargo molecule to load the plant picornavirus with the cargo molecule, and then purifying the loaded plant picornavirus. Examples of cargo molecules include imaging agents, antitumor agents, and antiviral agents. Loaded plant picornaviruses prepared in this manner can be used to delivering cargo molecule to cells.

Abstract: The present disclosure provides a method of DDCE-MRF. The method can include: a) introducing two or more contrast agents to a region of interest (ROI) of a subject, the two or more contrast agents having different relaxivities; b) measuring a T1 relaxation time and a T2 relaxation time for locations within the ROI using magnetic resonance fingerprinting (MRF); c) determining, using equations that relate the different relaxivities, the T1 relaxation time, the T2 relaxation time, and concentrations of the two or more contrast agents, the concentrations of the two or more contrast agents for each of the locations within the ROI; and d) producing an image depicting the ROI based, at least in part, on the concentrations of the two or more contrast agents.

Abstract: A rod-shaped plant virus having an interior surface and an exterior surface, and at least one imaging agent that is linked to the interior and/or exterior surface is described. The rod-shaped viruses can be combined into larger spherical nanoparticles. A rod-shaped plant virus or spherical nanoparticles including an imaging agent can be used in a method of generating an image of a tissue region of a subject such as a tumor or atherosclerotic tissue by administering the virus particle to the subject and generating an image of the tissue region of the subject to which the virus particle has been distributed.

Abstract: A rod-shaped plant virus having an interior surface and an exterior surface, and at least one imaging agent that is linked to the interior and/or exterior surface is described. The rod-shaped viruses can be combined into larger spherical nanoparticles. A rod-shaped plant virus or spherical nanoparticles including an imaging agent can be used in a method of generating an image of a tissue region of a subject such as a tumor or atherosclerotic tissue by administering the virus particle to the subject and generating an image of the tissue region of the subject to which the virus particle has been distributed.

Abstract: A method of non-covalently loading a plant picornavirus is described. The method includes contacting a plant picornavirus in solution with a molar excess of a cargo molecule to load the plant picornavirus with the cargo molecule, and then purifying the loaded plant picornavirus. Examples of cargo molecules include imaging agents, antitumor agents, and antiviral agents. Loaded plant picornaviruses prepared in this manner can be used to delivering cargo molecule to cells.