Our lab is interested in the effects of oxygen on cell metabolism, and in the molecular mechanisms underlying cellular oxygen sensing. The signaling pathways activated by hypoxia, and their regulation of transcriptional and post-translational responses in diverse cell types are also of major interest. Current studies focus on the role of mitochondrial redox signaling in the development of pulmonary hypertension. Other current studies focus on cardiomyocyte regeneration in the heart and molecular factors that regulate hypertrophic and hyperplastic remodeling responses.