Research

Research Program

Our research focuses on the problem of selective vulnerability. Recently, we have used frontotemporal dementia (FTD) and Alzheimer's disease (AD), the most common causes of dementia among patients under 65 years of age, as model disorders for understanding selective vulnerability at the network and cellular levels. Ongoing studies explore selective vulnerability in FTD, AD, corticobasal degeneration (CBD), progressive supranuclear palsy (PSP), and amyotrophic lateral sclerosis (ALS).

Our laboratory blends a variety of methods and provides a rich training environment for diverse aspiring researchers interested in studying neurodegenerative disease in humans. Dr. Seeley is a new member of the UCSF Neurosciences Program and is glad to receive inquiries from prospective UCSF graduate students, postdoctoral fellows, and visiting scholars about research opportunities.


Participate in Research

Visit the Research page at the Memory and Aging Center website below.
 

Von Economo Neurons and Fork Cells

Recent experiments in our lab have focused on the von Economo neurons (VENs) and fork cells, large layer 5 projection neurons which may represent the key early neuronal targets in behavioral variant FTD. VENs are found exclusively in anterior cingulate (ACC) and frontoinsular (FI) cortex, and their numbers have expanded greatly in humans, apes, cetaceans, and elephants. Fork cells are a related neuron subtype found primarily in the FI. We propose that some aspect of VEN and fork cell biology confers FTD-related selective vulnerability to the ACC and FI, and that understanding this phenomenon may provide clues toward finding new FTD treatments. Longer term, we hope to use VEN and fork cell degeneration in FTD as a model for the broader study of selective vulnerability.
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A healthy fork cell stained with Golgi impregnation
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Degenerating von Economo neurons containing TDP-43 inclusions
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A healthy human VEN filled with DiOlistic labeling
 

 


Ongoing Projects

Neuroimaging

Modern neuroimaging studies of patients living with degenerative disease provide the critical anatomical roadmaps for all neurodegenerative disease research. We use network-sensitive structural and functional MRI techniques to chart the brain regions affected early in each disease. Asymptomatic mutation carriers provide an important window into these early stages. We also use imaging to study disease progression. To date, our findings suggest that disease progression may represent physical spread of disease along network connections. Additional ongoing studies seek additional more direct support for this hypothesis.
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Neuroanatomy and Pathology

Because quantitative neuropathological experiments require meticulous, labor-intensive experiments that yield rich information about few, restricted brain regions, we use the neuroimaging division of the lab to pinpoint networks and provide a “roadmap” for our quantitative pathology studies. Neurohistological methods then enable us to delve deeper, into the microstructure of the brain as it undergoes progressive degeneration. The overall goal of these studies is to understand how selective vulnerability works, paving the way for discovery of novel therapeutics that protect, restore, or even replace susceptible neurons.
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Clinicopathological Correlation

Dr. Seeley founded the UCSF Neurodegenerative Disease Brain Bank (NDBB) in 2008. The NDBB, housed within the Seeley Lab, contains brain tissue specimens from over 300 patients with neurodegenerative disease, and UCSF research conducted on this cohort has helped contribute to our understanding of clinicopathological correlations in FTD (image at left available for download). The NDBB also serves as a valuable tissue resource for the neurodegeneration research community.

The combination of imaging and pathology expertise and resources in our lab also provides a fertile environment for studies that relate imaging measures obtained during life to pathological observations made at autopsy.