Mark A. Sheridan

Mark A. Sheridan is a Professor and Dean of the Graduate School at Texas Tech University's Department of Biological Sciences. His research focuses on endocrinology, particularly the regulation of growth, development, and metabolism in vertebrate animals by hormones and environmental factors.

• Education:
• Ph.D. in Zoology, University of California-Berkeley (1985)
• M.A. in Biology, Humboldt State University (1982)
• A.B. in Zoology, Humboldt State University (1980)

His work explores molecular mechanisms of hormone multifunctionality, environmental contaminant effects on growth, and genetic regulation through duplicated genes. Research utilizes rainbow trout (Oncorhynchus mykiss) as a model organism, examining signaling pathways like ERK, PI3K-AKT, JAK-STAT, and PKC in lipid metabolism and growth regulation.

Recent publications emphasize environmental endocrinology, GH-IGF system interactions, and signal transduction networks in fish physiology. He investigates how estrogenic compounds disrupt growth regulation and how nutritional states modulate hormone receptor expressions.

His laboratory employs molecular biology techniques to study gene expression, receptor dynamics, and metabolic pathway interactions. Current projects examine hormone signaling complexity and its implications for aquatic organism adaptation to environmental stressors.