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Department of Biology

Department of Cell Biology

Department of Neuroscience

Biomedical Sciences Graduate Studies at UVa

College of Arts & Science

School of Medicine

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   Research in our laboratory is now focused primarily on Alzheimer’s disease (AD), the most common form of a group of neurodegenerative disorders known collectively as tauopathies. The histopathological hallmark of AD is the presence in brain of extracellular plaques of β-amyloid peptide fibrils, and intraneuronal neurofibrillary tangles, which are filaments composed of the protein, tau, and are found in all tauopathies. Despite the conspicuous appearance of plaques and tangles, a growing body of evidence points to their building blocks, β-amyloid and tau oligomers, as being the toxic molecular species that cause AD. For example, we have found that tau expression is required for several adverse effects of β-amyloid oligomers on neurons, including microtubules loss, ectopic re-rentry into the cell cycle and cytotoxicity. The goals of our work are to decipher the metabolic links that connect β-amyloid and tau to damage neurons, to define the structures and pathological properties of various types of β-amyloid and tau oligomers, and to develop effective therapeutic and diagnostic tools for AD.


     

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