The present invention relates to engineered neuregulin-1 variants that selectively activate ErbB4 receptors but do not activate ErbB3 receptors. The invention also provides methods for using such variants to treat heart failure.

Disclosed is a use of recombinant human neuregulin derivatives in preparing a medicine for preventing, treating, or reducing the progression of cardiovascular diseases in mammals. In particular, the present invention relates to a novel recombinant human NRG-FC protein and a use thereof in the treatment of cardiovascular diseases. The protein has a prolonged half-life and enhanced biological activity.

Described herein is fatty acid-binding protein 3 (FABP3) and/or FABP4 for diagnosing or staging peripheral artery disease (PAD) or for assessing revascularization in PAD afflicted subjects. Also described is FABP3 and/or FABP4 for distinguishing PAD patients from non-PAD patients regardless of the presence PAD symptoms, for distinguishing PAD patients with a non-compressible ABI from non-PAD patients, or for determining prognosis in PAD. Also described herein are various methods and biomarker panels for use in PAD.

Disclosed herein are methods of treating cancer in a patient, the method comprising identifying a patient who is resistant to treatment with an anti-HER2 therapy; and administering to the patient a drug delivery molecule, comprising a polypeptide molecule adapted to target and/or penetrate a type of cell; a nucleic acid molecule bound to the polypeptide sequence via electrostatic interactions; and a chemical agent non-covalently linked to the nucleic acid sequence. Also disclosed are methods of inducing apoptosis in an anti-HER2 therapy resistant HER2+ breast cancer cell, the method comprising contacting the anti-HER2 therapy resistant HER2+ breast cancer cell with the drug delivery molecule. Further disclosed herein are methods of treating cancer in a patient, the method comprising identifying a patient who is resistant to anti-HER2 therapy; and administering to the patient a therapeutically effective amount of a drug delivery molecule, comprising a polypeptide molecule adapted to target and/or penetrate a type of cell; and a sulfonated corrole molecule bound to the polypeptide sequence. Finally disclosed herein are methods of inducing apoptosis in an anti-HER2 therapy resistant HER2+ breast cancer cell, the method comprising contacting the anti-HER2 therapy resistant HER2+ breast cancer cell with a drug delivery molecule, comprising a polypeptide molecule adapted to target and/or penetrate a type of cell; and a sulfonated corrole molecule bound to the polypeptide sequence.

The present invention provides methods for treating chronic heart failure patients using the medication comprising neuregulin. The methods comprise first performing a companion diagnostic test of each patient before treatment; and then providing a suitable treatment to the patient according to the results of the companion diagnostic test. When the result of the test is within a favorite treatment zone, the patient is suitable for heart failure treatment by administering an effective amount of neuregulin.

A chimeric protein is disclosed for promoting repair and regeneration of neurons damaged by disease or physical injury wherein the chimeric protein is a combination of a first polypeptide possessing matrix modification activity and a second polypeptide possessing regenerating activity for neural cells.

The present invention provides methods for treating chronic heart failure patients using the medication comprising neureplin. The methods comprise first performing a companion diagnostic test of each patient before treatment; and then providing a suitable treatment to the patient according to the results of the companion diagnostic test. When the result of the test is within a favorite treatment zone, the patient is suitable for heart failure treatment by administering an effective amount of neuregulin.

The present invention provides methods for treating chronic heart failure patients using the medication comprising neuregulin. The methods comprise first performing a companion diagnostic test of each patient before treatment; and then providing a suitable treatment to the patient according to the results of the companion diagnostic test. When the result of the test is within a favorite treatment zone, the patient is suitable for heart failure treatment by administering an effective amount of neuregulin.

The present invention relates to a complex that can be injected into the body to hone in on target cells to deliver molecules. In one embodiment, the invention provides a drug delivery system that includes components that self-assemble into one targeted conjugate. In another embodiment, the invention includes a targeted carrier protein and a nucleic acid sequence non-covalently linked to one or more drugs.

The present invention relates to neuregulin (NRG) 4 compounds and methods of treatment with NRG4 compounds.