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Michael T. Sellix, Ph.D.

Contact Information

Phone Numbers

Administrative: (585) 276-4994

Office: (585) 276-6004

Fax: (585) 273-1288

Research Labs

The Sellix Lab studies Clock-Controlled Gene Expression in the Ovary

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Faculty Appointments


Professional Background

Dr. Michael T. Sellix received his B.S. in Psychology with a minor in Biology from Florida State University in 1998. During his undergraduate career Dr. Sellix focused on the neurobiology of learning and memory and auditory neurophysiology. In 1998 Dr. Sellix entered the Ph.D. program in Neuroscience at Florida State University. As a graduate student Dr. Sellix worked with renowned neuroendocrinologist Dr. Marc E. Freeman, focusing on the neuroendocrine control of Prolactin secretion by dopaminergic neurons in the hypothalamus.

After receiving his Ph.D. in Neuroscience from Florida State University in 2005, Michael joined the laboratory of Dr. Gene D. Block in the Department of Biology at the University of Virginia. As a post-doctoral fellow of neuroendocrinology and reproductive medicine at UVA, Dr. Sellix had the rare opportunity to interact with several high profile chronobiologists including Dr. Ignacio Provencio, Dr. Carla Green and Dr. Herman Wijnen to name but a few. Dr. Sellix left the Block lab in 2007 and joined Prof. Michael Menaker's group wherein he focused on the role of the circadian clock in ovarian physiology.

Following four productive and exciting years in the Menaker Lab Dr. Sellix accepted a position as an Assistant Professor in the Division of Endocrinology and Metabolism at the School of Medicine.


Circadian clocks are all but ubiquitous in nature. Circadian rhythms, those biological rhythms with a period at or near 24h, are found in most, if not all, physiological systems ranging from cellular physiology and biochemistry to whole animal physiology. The mechanism controlling these oscillations is a now well-understood molecular oscillator composed of an autoregulatory transcriptional-translational feedback loop. This loop consists of interacting "clock gene" transcriptional regulators that facilitate precision through an elegant temporal scheme of positive and negative gene expression.

Our lab and others have recently determined that the circadian clock mechanism is present in the cells of the ovarian follicle. Further, we have determined that the ovary maintains an "endogenous" pattern of sensitivity to gonadotrophins that does not appear to be dependent on the timing of the LH surge or a fully developed endocrine and neuroendocrine system. These data, together with the data from other labs, suggests that the ovarian clock may play a substantial role in the timing of events in the ovary, related to both the ovulatory response to gonadotrophins and the timing of steroidogenesis.

The Sellix laboratory is currently focused on two distinct but interrelated facets of this research by asking two fundamental questions:

1) Does "clock-controlled" gene expression in the ovary, more specifically the various ovarian cell types, play a substantial role in the timing of ovarian physiology and more specifically the timing of ovulation and/or steroid hormone biosynthesis

2) Do disease states that negatively impact reproductive function (e.g. PCOS, etc.) do so by altering the timing of clock gene or clock-controlled genes in the tissues of the hypothalamo-pituitary-ovarian axis? Further, is phase-synchrony among these oscillators (or lack thereof) a contributing factor to the onset and progression of disease?



BS | Florida State University

PhD | Florida State University


Endocrine Society Early Career Investigator Award
Sponsor: The Endocrine Society and Amgen Inc.

Presidential Poster Award for Outstanding Research
Sponsor: 91st Annual Endocrine Society Meeting

Endocrine Society Travel Grant Awards
Sponsor: Endocrine Society

Bryan Robinson Foundation for Neuroscience

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Journal Articles

Sundar IK, Rashid K, Sellix MT, Rahman I. "The nuclear receptor and clock gene REV-ERB? regulates cigarette smoke-induced lung inflammation." Biochemical and biophysical research communications.. 2017 Dec 2; 493(4):1390-1395. Epub 2017 Sep 30.

Sundar IK, Sellix MT, Rahman I. "Redox regulation of circadian molecular clock in chronic airway diseases." Free radical biology & medicine.. 2017 Oct 31; Epub 2017 Oct 31.

Sellix MT, Sen A. "Finding the Right Balance: Androgens at the Tipping Point of Fertility and Metabolism in Women." Endocrinology.. 2017 158(3):467-469.