Clinical Profile Clinical Profile Clinical Profile ul
UCSF home page UCSF home page About UCSF UCSF Medical Center
UCSF navigation bar

Neuroscience Graduate Program at UCSF

Faculty - Holly Ingraham, Ph.D.

Neural Basis for Sex-Differences in Metabolism


Research Description

In women, the loss of estrogen correlates with increased risk for obesity, diabetes and bone fractures. Hence, the precipitous drop in hormone replacement therapy in the last decade, coupled with longer lifespans suggests that the risk for metabolic diseases will continue to rise for the large number of post-menopausal women in the U.S. Nearly all studies on estrogen signaling in females have focused on peripheral systems. In our lab, we are taking a different approach and asking how central estrogen signaling in the hypothalamus contributes to physiological endpoints in females. 

We use a discovery-based approach to define the physiological and genomic consequences of hypothalamic ERa signaling in the mediobasal hypothalamus (MBH). We are currently focused on two regions, the ventrolateral ventromedial hypothalamus (VMHvl) and the arcuate (ARC); both of these regions express much higher levels of the primary estrogen receptor (ERa) in the female brain. Our published and unpublished work shows that these two well-defined MBH regions integrate estrogen signaling to coordinate metabolic, bone physiology and reproductive physiology. Estrogen signaling in the VMHvl controls both locomotion and adaptive thermogenesis in female mice. Estrogen signaling in the ARC has a surprising role - it does not control food intake but does appear to be critical for bone physiology. We are using a variety of techniques to pinpoint which subset of neurons control these functions using transcriptional, translational, and metabolic profiling. We also want to understand the underlying basis for the large sex-differences and functions mediated by MBH neurons. 

Back to Top


Current Projects

To date, assessing the role of central estrogen signaling has generally been limited to standard endpoints, such as fertility, food intake, weight gain on HFD, oxygen consumption, locomotion, etc. We believe there is a compelling need to go beyond these assays to better understand the role of central estrogen signaling in metabolism and reproduction. As such we now use viral delivery of Cre to acutely knock-out ERa as well as activating and inhibitory DREADDs to manipulate ERa neurons in different regions of the MBH. Our assays include the use of a new female Thermo Mouse for real in vivo imaging of BAT activity as well as micro-CT for imaging of bone density. Eventually we want to understand how estrogen modulates neuronal activity.

Back to Top


Lab Members

William Krause, Ph.D.
Candice Herber, Ph.D.
Diego Miranda, Ph.D.
Hazel Escusa, B.A.
James Bayrer, M.D., Ph.D.
Mayra Pastore, Ph.D.
Yuxi Lin, Ph.D. (coming Sept 2016)
Anne Sufka, B.A. (Admin Assistant/Lab Manager)

Back to Top


Selected Publications

Kurrasch, D.M., Cheung, C., Tran, P.V., Lee, H.A. Ingraham, The neonatal ventromedial hypothalamus transcriptome reveals novel developmental markers with spatially distinct patterning. Journal of Neuroscience 27(50):13624-34 (2007).  PMID: 18077674

Cheung, C., Kurrasch, D.M., Liang, J. and H.A. Ingraham, Genetic Labeling Of SF-1 Neurons Reveals VMH Circuitry Beginning At Neurogenesis And The Emergence Of A Separate Non-SF-1 Neuronal Cluster In The Ventrolateral VMH, Journal of Comparative Neurology (2013) Apr 15;521(6):1268-88. PMID: 22987798.

Correa, SM, Newstrom, DW., Warne, JP., Cheung, C.C., Flandin, P., Pierce, AA., Xu, AW, Rubenstein, J.R. and H.A. Ingraham. A Sexually Dimorphic Neuronal Cluster In The Ventromedial Hypothalamus Maintains Energy Balance In Females By Promoting Physical Activity, Cell Reports Jan 6;10(1):62-74. doi: 10.1016/j.celrep.2014.12.011. Epub 2014 Dec 24. (2015) PMID: 25543145

Krause, W., Cheung, C.,H.A. Ingraham, Reduced anxiety and sex-dependent changes in metabolism and behavior after eliminating VMH glutamatergic signaling, Molecular Metabolism, (2015) doi: 10.1016/j.molmet.2015.09.001 PMID: 26629409.

Back to Top

Holly Ingraham, Ph.D.



Email

holly.ingraham@ucsf.edu

Phone 415-502-7342

Office Address

1550 4th Street
Room RH-284F, Box 2611
San Francisco, CA 94158

Other Websites

Lab Website