All experiments involving animals were approved by the Animal Care and Use Committee of Renmin Hospital, Wuhan University, China. An expanded Methods section is available in the online-only Data Supplement, which includes Reagents, Mice Used in This Study,17 (link) Aortic Banding,1 (link),8 (link),9 (link),15 (link) Echocardiography and Hemodynamic Measurements,1 (link),8 (link),9 (link) Histological Analysis, Cultured Neonatal Rat Cardiac Myocytes and Recombinant Adenoviral Vectors,1 (link) Measurement of the Protein/DNA Ratio, Atrial Natriuretic Peptide (ANP) Quantification Assays, Immunofluorescence Analysis, Quantitative Real-Time PCR and Western Blotting,1 (link),8 (link),9 (link) IKKβ Activity Assays, Luciferase Reporter Assays,23 (link),24 (link) Hydroxyproline Assay,25 (link) Immunoprecipitation, Glutathione S-transferase (GST) Pull-down Assay, Confocal Microscopy, and Statistical Analysis.