Abstract: The present invention relates to a method of treating a chemical injury of the eye, in particular alkali burn of the cornea, as well as ocular GVHD and similar inflammatory ocular conditions, with extracellular vesicles, in particular exosomes obtained from human cardiospheres or cardiosphere-derived cells. The present invention also provides a formulation comprising extracellular vesicles, in particular exosomes obtained from human cardiospheres or cardiosphere-derived cells, for subconjunctival or topical administration to the eye in the treatment of a chemical injury of the eye, in particular alkali burn of the cornea, as well as ocular GVHD and similar inflammatory ocular conditions.

Abstract: The present invention relates to a method of treating acute or chronic systemic graft-versus-host disease (GVHD) with extracellular vesicles, e.g., exosomes obtained from human cardiospheres or cardiosphere-derived cells (CDCs), wherein systemic GVHD involves, e.g., at least two organs selected from the group consisting of the skin, mucosa, gastrointestinal tract, liver, lungs, joints and fascia, genitalia, and eyes. The present invention also provides a pharmaceutical formulation comprising extracellular vesicles, e.g., exosomes obtained from human cardiospheres or CDCs, for systemic administration, e.g., intravenous infusion, to a human subject in need of treatment of systemic GVHD.

Abstract: The present invention relates to engineered selectable marker proteins for recombinant protein expression, as well as novel expression vector designs for achieving high-level recombinant protein expression, and cells transfected therewith as a platform technology for producing extracellular vesicle-based therapeutic or prophylactic compositions, wherein one or more recombinant proteins of interest are displayed on the surface of the extracellular vesicles. As an example, the present invention relates to a virus-like article composition comprising such extracellular vesicles displaying one or more antigens configured to induce immune responses against SARS-CoV-2.

Abstract: The present invention relates to modular systems for vaccination against infectious agents that involves the delivery of, e.g., exosome-loaded, antigen-encoding mRNAs to and into cells and tissues of the immunized subject. The present invention also relates to compositions and methods for the design, preparation, manufacture, formulation, and/or use of vaccines, e.g., nucleic acid vaccines, loaded into extracellular vesicles, e.g., exosomes loaded with synthetic mRNAs encoding multiple surface and cytoplasmic antigens of interest, e.g., antigenic polypeptides derived from an infectious virus, e.g., SARS-CoV-2, designed to elicit strong humoral and cellular immune responses due to the simultaneous expression of antigens in their native state and as exosome-associated antigens.

Abstract: Several embodiments of the methods and compositions disclosed herein relate to methods of treating viral infections, such as those caused by coronaviruses. In some embodiments, CDCs are administered to a patient, to treat the viral infection. In some embodiments, CDC-derived exosomes are administered to a patient. In some embodiments combinations of CDCs and CDC-derived exosomes are used. In still additional embodiments, combination therapies, such as CDCs or CDC-derived exosomes in combination with another therapeutic, such as an anti-inflammotry or other immune modulator are used to treat viral infections. In some embodiments, the viral infection is COVID-19, which is caused by SARS-CoV-2.

Abstract: The present invention relates to a method of treating acute or chronic systemic graft-versus-host disease (GVHD) with extracellular vesicles, e.g., exosomes obtained from human cardiospheres or cardiosphere-derived cells (CDCs), wherein systemic GVHD involves, e.g., at least two organs selected from the group consisting of the skin, mucosa, gastrointestinal tract, liver, lungs, joints and fascia, genitalia, and eyes. The present invention also provides a pharmaceutical formulation comprising extracellular vesicles, e.g., exosomes obtained from human cardiospheres or CDCs, for systemic administration, e.g., intravenous infusion, to a human subject in need of treatment of systemic GVHD.

Abstract: The present invention relates to a method of treating a chemical injury of the eye, in particular alkali burn of the cornea, as well as ocular GVHD and similar inflammatory ocular conditions, with extracellular vesicles, in particular exosomes obtained from human cardiospheres or cardiosphere-derived cells. The present invention also provides a formulation comprising extracellular vesicles, in particular exosomes obtained from human cardiospheres or cardiosphere-derived cells, for subconjunctival or topical administration to the eye in the treatment of a chemical injury of the eye, in particular alkali burn of the cornea, as well as ocular GVHD and similar inflammatory ocular conditions.

Abstract: The present invention relates to a method of treating dermatitis, in particular radiation-induced dermatitis, with extracellular vesicles, in particular exosomes obtained from human cardiospheres or cardiosphere-derived cells. The present invention also provides a formulation comprising extracellular vesicles, in particular exosomes obtained from human cardiospheres or cardiosphere-derived cells, for use in the treatment of dermatitis, in particular radiation-induced dermatitis.

Abstract: The present invention relates to a method of treating acute or chronic systemic graft-versus-host disease (GVHD) with extracellular vesicles, e.g., exosomes obtained from human cardiospheres or cardiosphere-derived cells (CDCs), wherein systemic GVHD involves, e.g., at least two organs selected from the group consisting of the skin, mucosa, gastrointestinal tract, liver, lungs, joints and fascia, genitalia, and eyes. The present invention also provides a pharmaceutical formulation comprising extracellular vesicles, e.g., exosomes obtained from human cardiospheres or CDCs, for systemic administration, e.g., intravenous infusion, to a human subject in need of treatment of systemic GVHD.

Abstract: The present invention relates to a method of treating dermatitis, in particular radiation-induced dermatitis, with extracellular vesicles, in particular exosomes obtained from human cardiospheres or cardiosphere-derived cells. The present invention also provides a formulation comprising extracellular vesicles, in particular exosomes obtained from human cardiospheres or cardiosphere-derived cells, for use in the treatment of dermatitis, in particular radiation-induced dermatitis.

Abstract: The present application relates to cardiac stem cells and a method of using cardiac stem cells to repair damaged heart tissue. In one embodiment, cardiac stem cells, such as cardiosphere-derived cells and/or cardiospheres, can be seeded, embedded and/or cultured in a biomaterial or matrix made from, for example, a hydrogel, that is subsequently administered to a subject to repair damaged heart tissue.