The described invention provides a method for treating myocardial infarction (MI) in a subject comprising administering to the subject a therapeutic amount of a pharmaceutical composition comprising a polypeptide of amino sequence YARAAARQARAKALARQLGVAA (SEQ ID NO: 1) or a functional equivalent thereof made from a fusion between a first polypeptide that is a cell permeable protein (CPP) selected from the group consisting of a polypeptide of amino acid sequence YARAAARQARA (SEQ ID NO: 2), WLRRIKAWLRRIKA (SEQ ID NO: 21), WLRRIKA (SEQ ID NO: 22), YGRKKRRQRRR (SEQ ID NO: 23), FAKLAARLYR (SEQ ID NO: 25), and KAFAKLAARLYR (SEQ ID NO: 26), and a second polypeptide that is a therapeutic domain (TD), and a pharmaceutically acceptable carrier. The described invention also provides a kit comprising a composition comprising at least one MK2 inhibitor peptide； a means for administering the composition； and a packaging material.
