Sean Limesand

Sean Limesand, PhD is a Professor at the University of Arizona's School of Animal Sciences & Comparative Biomedical Sciences. His research focuses on fetal development, endocrine adaptations, and metabolic programming in animal models, particularly sheep and goats. Key areas include fetal growth restriction (FGR), placental insufficiency, and the long-term impacts of in utero stressors like hypoxia, heat, and maternal infections.

His work integrates molecular biology (e.g., transcriptomics), cellular physiology (e.g., β-cell function), and whole-animal studies. Notable contributions include identifying dysregulated pathways in growth-restricted fetal tissues, characterizing mitochondrial adaptations in FGR, and exploring therapeutic interventions (e.g., oxygen/glucose therapy in ovine models).

Research also addresses environmental challenges like maternal heat stress and its effects on lactation/placental function, as well as SARS-CoV-2's impact on maternal-neonatal outcomes. His studies often involve interdisciplinary approaches, combining omics technologies with physiological measurements to understand developmental origins of health and disease.

Current studies investigate single-cell transcriptomics of SS-cells in FGR, epigenetic modifications in thermotolerant ewes, and molecular mechanisms linking fetal programming to adult metabolic disorders. These efforts aim to translate findings into clinical strategies for managing growth-restricted infants and improving livestock resilience.