The present disclosure relates to pharmaceutical compositions comprising a non-naturally occurring fusion molecule and one or more pharmaceutically acceptable carriers, formulated for oral delivery to a subject, and designed to provide for improved, effective therapies for treatment of, e.g., inflammatory diseases, autoimmune diseases, cancer, metabolic disorders, and growth deficiency disorders.

This invention provides methods of preventing or treating cardiac ischemia-reperfusion injury in a mammalian subject. The methods comprise administering to the subject an effective amount of an aromatic-cationic peptide to a subject in need thereof, wherein the peptide is D-Arg-2 6-Dmt-Lys-Phe-NH2 (SS-31).

This invention provides methods of preventing or treating cardiac ischemia-reperfusion injury in a mammalian subject. The methods comprise administering to the subject an effective amount of an aromatic-cationic peptide to a subject in need thereof, wherein the peptide is D-Arg-2 6-Dmt-Lys-Phe-NH2 (SS-31).

The present disclosure relates to pharmaceutical compositions comprising a non-naturally occurring fusion molecule and one or more pharmaceutically acceptable carriers, formulated for oral delivery to a subject, and designed to provide for improved, effective therapies for treatment of, e.g., inflammatory diseases, autoimmune diseases, cancer, metabolic disorders, and growth deficiency disorders. The present disclosure relates to a non-toxic mutant form of the Vibrio cholera Cholix gene (ntCholix), a variant of Cholix truncated at amino acid A.sup.386 (Cholix.sup.386) and the use of other various Cholix-derived polypeptide sequences to enhance intestinal delivery of biologically-active therapeutics. The systems and methods described herein provide for: the ability to deliver macromolecule doses without injections; the ability to deliver cargo such as siRNA or antisense molecules into intracellular compartments where their activity is required; and the delivery of nanoparticles and dendrimer-based carriers across biological membranes.