About Us

Lab Members

Sherri Osborne-Lawrence, M.S.

Senior Research Scientist and Lab Manager

Sherri Osborne-Lawrence, MS
Sherri Osborne-Lawrence, M.S.

Sherri was born in Texas and has lived here all of her life. She received her B.A. degree in Biology from Austin College in Sherman, TX, and an M.S. degree in Molecular & Cell Biology from UT Dallas. She has worked in five laboratories at UT Southwestern Medical Center. Sherri's initial research projects involved positional cloning of genes involved in rheumatoid arthritis and early-onset familial breast cancer. After a few years assisting with the final stages of sequencing for the Human Genome Project, she focused on discovering how endothelial cell dysfunction leads to cardiovascular disease, with particular interests in estrogen modulation as well as the effects of C-reactive protein. Sherri joined the Zigman Lab in 2006 as Senior Research Scientist and Lab Manager, and has now expanded her interests to include ghrelin and its effects on metabolic pathways. Among many other contributions, Sherri has designed and generated several new mouse lines currently in use in the lab and by our collaborators.

Bharath Mani, Ph.D.

Instructor

Bharath Mani, Ph.D.

Bharath was born and raised in Namakkal, a small town in the southern state of Tamil Nadu, India. Bharath’s initial training was at Tamil Nadu Veterinary and Animal Sciences University in Chennai, India, where he earned a B.VS.c. in Veterinary Sciences and an M.S. in Pharmacology. Afterwards, Bharath worked as a research scientist in India, where he was involved in conducting pre-clinical efficacy and toxicity studies of new chemical entities to treat cardiovascular diseases. In July of 2006, Bharath moved to Chicago and enrolled in the pharmacology graduate program at Loyola University Chicago. Bharath worked in the laboratory of Dr. Kenneth Byron to understand the regulation of vascular tone by ion channels in smooth muscle cells to receive his Ph.D. in 2012. To complement his training in cardiovascular pharmacology, Bharath wanted a broad-based training in metabolic syndrome, an important contributor to cardiovascular risk. So, he joined the Zigman Lab in May 2012 and has been working to understand mechanisms regulating ghrelin secretion and action. Bharath spends a lot of time with his family and is interested in exploring different cultures and food. Bharath is a profound follower of cricket, the most revered sport in India.

Sun-Hyun Park, Ph.D.

Postdoctoral Research Fellow

Photo: Sun-Hyun Park, Ph.D.
Sun-Hyun Park, Ph.D.

Sun-Hyun was raised in Kyeong San, a small town in the southern province of Korea. He received his B.A. degree in Electrical Engineering from Kyung Il University, and an M.S. degree in Biological Sciences from Yeung Nam University. He moved to Seoul, the capital city of Korea, to attend graduate school in the department of physiology at the College of Medicine, Seoul National University. He studied in the laboratory of Dr. Won-Kyeong Ho to understand the regulation of KATP channel traffickin g on pancreatic β-cells and received his Ph.D. in Biomedical Sciences in 2013. He worked as a Postdoctoral Fellow for 1 year at Harvard Medical School. His research projects involved Botulinum toxin effects on the synaptic vesicle release of the CNS. His hobbies are boxing, basketball and cooking. Sun-Hyun joined the Zigman lab in October 2015.

Emily C. Bruggeman, M.S., Ph.D.

Postdoctoral Research Fellow

Emily C. Bruggeman, M.S., Ph.D.

Emily grew up in the Blue Ridge mountains of Western North Carolina, and earned her B.A. in Psychology from the University of North Carolina at Asheville. She began her graduate studies in Dr. Marise Parent’s lab at Georgia State University in Atlanta, where she studied the memory-impairing effects of high-energy diets. Her projects were aimed at understanding the effects of a high fructose diet, as well as fish oil supplementation, on brain biochemistry and cognition. She earned her M.S. degree in Neuroscience in 2011, and then joined Dr. Bingzhong Xue’s lab to acquire more advanced molecular techniques with an emphasis on epigenetics. For her dissertation, Emily investigated the role of neuronal DNA methyltransferase 1 in energy homeostasis using transgenic mouse models, and she received her Ph.D. in Neuroscience in 2016. Emily joined the Zigman lab in July 2016 to continue studying energy regulation, targeting the role of ghrelin in central and peripheral tissues. When she is not in the lab, Emily enjoys cooking, trying new wines, and being outdoors.

Nathan Metzger, M.S.

Research Assistant I

Nathan Metzger, M.S.

Nathan was born and raised in Apple Valley, MN. He obtained his BS in Community Health (2012) and Biomedical Science (2012) and his MS in Cell and Molecular Biology (2014) from Saint Cloud State University in Saint Cloud, MN. His research background includes having studied the post-translational modifications of a family of proteins collectively known as PGC-1. Specifically, identifying modifiers, locating binding sites, and exploring their effects on PGC-1 expression and activity. He relocated to Fort Worth, TX in the summer of 2016, after which he joined Dr. Zigman's lab. When he is not in the lab exploring the mysteries of life, he enjoys playing League of Legends and spending time with his wife.