Our laboratory is interested in understanding the redox signaling, mechanism of proinflammatory gene expression by studying the chromatin remodeling-epigenetic changes (histone acetylation/deacetylation) on pro-inflammatory genes, involvement of anti-inflammatory and anti-aging proteins sirtuins, and steroid resistance in chronic inflammatory diseases/COPD. Recent research includes in understanding the role of sirtuins in aging and accelerated decline in lung function and regulation of circadian genes. Our long-term goal is to understand the cellular and molecular mechanisms involved in pathogenesis of COPD, and the potential benefit of therapeutic interventions in this debilitating disease.