The present invention relates to host cells expressing monomeric streptavidin. The host cells according to the present invention may express streptavidin in vivo, making it possible to visualize and monitor in real time the biodistribution of cancer tissue, pre-targeted by the host cell, with a biotinylated diagnostic agent, as well as to increase the cancer-targeting efficiency of biotinylated anticancer drugs.

The present invention relates to a vaccine composition for use in in vivo administration, comprising a (attenuated) pathogen or commensal modified to be a pre-targeting vector, the pre-targeting vector comprising one or more pendent reactive moieties able to form a high affinity interaction with a complementary moiety residing on an immunogenic conjugate component.

A pepino mosaic virus (PepMV) carrier comprising a PepMV particle that has been modified to carry an imaging agent or anticancer agent is described. The PepMV carrier can be used in a method of targeting cancer cells and tissue by administering it to a subject. Cancer tissue targeted by the PepMV carrier can be imaged using an imaging agent, or treated using an anticancer agent.

Provided herein, in some embodiments, are hydrogel-elastomer and hydrogel-alginate devices, compositions and associated methods to encapsulate living cells.

Provided herein are devices and methods used to produce tattoo biosensors that are based on spatially controlled intracutaneous gene delivery of optical reporters driven by specific transcription factor pathways for a given cytokine or other analyte. The biosensors can be specific to a given analyte, or more generically represent the convergence of several cytokines into commonly shared intracellular transcription factor pathways. These biosensors can be delivered as an array in order to monitor multiple cytokines. Biosensor redeployment can enable chronic monitoring from months to years. The tattooed biosensor array of the present invention includes endogenous reporter cells, naturally tuned to each patient's own biology and can be used to reliably measure the state of a patient in real-time.

Disclosed herein are methods of detecting tumors, monitoring cancer therapy, and selectively inhibiting the proliferation and/or killing of cancer cells utilizing a papilloma pseudovirus or a papilloma virus-like particle (VLP).

Nanoassembly (1) for inducing apoptosis in cancer cells comprising: a core (2) comprising at least a nanoparticle of a nano structured and semiconductor metal oxide, said nanoparticle being monocrystalline or polycrystalline; a shell (3) formed by a double phospholipid layer and proteins derived from an extracellular biovesicole chosen between an exosome, an ectosome, a connectosome, an oncosome and an apoptotic body, and an oncosome, said core (2) being enclosed inside said shell (3); and a plurality of targeting molecules (4, 4, 4) of said cancer cells, preferably monoclonal antibodies (4, 4, 4), said molecules (4, 4, 4) being anchored to the external surface of said biovesicole.

A method for internal imaging of biological tissue in a subject by positron emission tomography (PET) or single photon emission computer tomography (SPECT), the method comprising: (i) administering to a subject an imaging agent that includes, at minimum, at least one fluorine-18 radionuclide bound directly or indirectly to a fluorophore, and (ii) imaging internal biological tissue of the subject by PET or SPECT. In further embodiments, the method includes (i) administering to a subject an imaging agent that includes at least one fluorine-18 radionuclide bound directly or indirectly to a fluorophore, and at least one biological entity (e.g., blood cell, peptide, nucleotide, aptamer, targeting agent, antibody, or antibody fragment) bound directly or indirectly to the fluorophore; and (ii) imaging internal biological tissue of the subject by PET or SPECT. In some embodiments, the method further includes simultaneously imaging the internal biological tissue by fluorescence imaging.

Living cells, such as red blood cells (RBCs) modified with functional micromotors with the aid of ultrasound propulsion and magnetic guidance. Iron oxide nanoparticles are loaded into the RBCs, where their asymmetric distribution within the cells results in a net magnetization, thus enabling magnetic alignment and guidance under acoustic propulsion. The RBC motors display efficient guided and prolonged propulsion in various biological fluids, including undiluted whole blood.

The present invention relates to a composition for material delivery, including exosome mimetics derived from red blood cells, and a use thereof and the composition for material delivery according to an exemplary embodiment of the present invention includes exosome mimetics derived from red blood cells, which are capable of being loaded with a drug, a radioactive material, or a fluorescent material, and thus may be usefully utilized for a drug delivery use, a cell labeling use, a contrast medium, or the like, and when the composition for material delivery according to an exemplary embodiment of the present invention is used, treatment and diagnosis may be simultaneously performed.