Darlene Dixon, D.V.M., Ph.D.
National Toxicology Program/Molecular Pathogenesis Group
B341 David P Rall Building
111 Tw Alexander Dr
Research Triangle Park, NC 27709
Dixon’s group focuses on defining the pathogenesis/carcinogenesis of tumors affecting the reproductive tract of rodents and humans and assessing the role of environmental and endogenous hormonal factors in the growth of these tumors.
The group has used cell lines, 3D cultures, archival mouse tissue, and human clinical samples to study the influence of membrane-associated estrogen receptors and growth factors/receptors and their signaling pathways on uterine leiomyoma (fibroid) growth. Group members use leiomyoma and patient-matched myometrial samples, clinical tissues taken from cycle-staged, premenopausal women participating in the NIEHS George Washington University Fibroid Study. The rodent tissue samples are either from in-house studies or National Toxicology Program archives.
Dixon and her group seek to understand the basic molecular mechanisms of disease, which may lead to therapeutic interventions that generate alternative non-invasive treatments for clinical fibroids and other diseases affecting the female reproductive tract.
Dixon earned her Doctor of Veterinary Medicine (D.V.M.) degree in 1982 at Tuskegee University School of Veterinary Medicine and her Ph.D. in 1985 at Michigan State University. She also completed a postdoctoral fellowship at The Rockefeller University, Laboratory Animal Research Center. Dixon received her board certification from the American College of Veterinary Pathologists (ACVP) in 1987 and joined NIEHS the same year.
Yan Y, Liu J, Lawrence A, Dykstra MJ, Fannin R, Gerrish K, Tucker CJ, Scappini E, Dixon D. Prolonged cadmium exposure alters benign uterine fibroid cell behavior, extracellular matrix components, and TGFB signaling. FASEB J. 2021;35(8):e21738.
Yu L, Liu J, Yan Y, Burwell A, Castro L, Shi M, Dixon D. "Metalloestrogenic" effects of cadmium downstream of G protein-coupled estrogen receptor and mitogen-activated protein kinase pathways in human uterine fibroid cells. Arch Toxicol. 2021;95(6):1995-2006.
Liu J, Yu L, Castro L, Yan Y, Sifre MI, Bortner CD, Dixon D. A nongenomic mechanism for "metalloestrogenic" effects of cadmium in human uterine leiomyoma cells through G protein-coupled estrogen receptor. Arch Toxicol. 2019;93(10):2773-2785.
Yu L, Das P, Vall AJ, Yan Y, Gao X, Sifre MI, Bortner CD, Castro L, Kissling GE, Moore AB, Dixon D. Bisphenol A induces human uterine leiomyoma cell proliferation through membrane-associated ERα36 via nongenomic signaling pathways. Mol Cell Endocrinol. 2019;484:59-68.
Flake GP, Moore AB, Sutton D, Flagler N, Clayton N, Kissling GE, Hall BW, Horton J, Walmer D, Robboy SJ, Dixon D. The Life Cycle of the Uterine Fibroid Myocyte. Curr Obstet Gynecol Rep. 2018;7(2):97-105.
Related Scientific Focus Areas
Molecular Biology and Biochemistry
This page was last updated on September 4th, 2019