University of Southern California
Keck School of Medicine of USC
Berislav Zlokovic, MD, PhD is the director of the Zilkha Neurogenetic Institute, Professor and Chair of the Department of Physiology & Neuroscience at the Keck School of Medicine, and Professor of Biology at Dornsife College of Letters, Arts and Sciences. Zlokovic studies the role of brain microcirculation, particularly the blood-brain barrier (BBB) in health and disease in the adult brain and during aging. Using animal models and studying human brain he has pioneered the neurovascular concept of Alzheimer’s disease, and showed that BBB breakdown can accumulate before neuronal and synaptic loss, and is an early biomarker of human cognitive dysfunction. He demonstrated that disrupted cross-talk between BBB-associated pericytes and brain capillary endothelial cells, and astrocytes and pericytes, within the neurovascular unit leads to neuronal dysfunction and loss, and that targeting these BBB pathways can reverse neurodegenerative process. He has identified genes and receptors at the BBB regulating levels of Alzheimer’s amyloid-beta toxin in the brain, which accumulates with aging and dementia. He has developed new techniques for studying neurovascular functions in animal models and the living human brain that have opened up new areas of research previously untouched. His findings contributed to Phase 2/3 trials for Alzheimer’s disease based on clearance, and stroke based on activated protein C pathway in the brain. Thomson Reuters and Clarivate Analytics listed Zlokovic as one of “The World’s Most Influential Scientific Minds” for ranking in top one percent of the most-cited authors in the field of neurosciences and behavioral sciences for 18 consecutive years (2002-2020). He received the MetLife Award for Medical Research, the Potamkin Prize from the American Academy of Neurology, the MERIT Award from NIA, the Javits Award from NINDS, and recently the 2019 USC Associates Award for Creativity in Research and Scholarship, “the highest honor the university faculty bestows on its members for distinguished intellectual achievements”. Zlokovic is a member of the AAAS and the European Academy of Sciences. He co-founded ZZ Biotech, a biotechnology company dedicated to developing new treatments for stroke and other CNS disorders.

Presenter of 1 Presentation

PRE-RECORDED: APOE4 blood-brain barrier dysfunction, cognitive dysfunction and therapeutic opportunities

Session Type
SYMPOSIUM
Date
Thu, 17.03.2022
Session Time
05:15 PM - 07:15 PM
Room
ONSITE: 112
Lecture Time
07:00 PM - 07:15 PM

Abstract

Abstract Body

Apolipoprotein E4 (APOE4), the main susceptibility gene for Alzheimer’s disease (AD), exerts cerebrovascular toxicity and accelerates vascular dysfunction, amyloid-b and tau pathology, neurodegenerative disorder and dementia in AD. How these different pathologies relate to each other to confer APOE4-associated cognitive impairment remains still unclear and challenging to dissect. Here, I will briefly review 1) our recent findings in human APOE4 carriers and non-carriers (APOE3 homozygotes) suggesting the role of blood-brain barrier (BBB) breakdown in development of early human cognitive dysfunction and APOE4-associated cognitive decline both in individuals with positive and negative AD amyloid-b and tau biomarkers abnormalities; and 2) our recent cellular and molecular studies in humanized APOE knock-in mice including comprehensive large-scale analysis of cell-specific BBB mechanisms by single-nucleus RNA-sequencing, phosphoproteome and proteome analysis suggesting that changes in APOE4 disrupts multiple BBB signaling mechanisms that precedes loss of neurites, post-synaptic PSD95 interactome dysregulation, and behavioral deficits. Finally, I will briefly discuss potential therapeutic opportunities to control neurodegenerative and cognitive disorders by targeting BBB signaling mechanisms that regulate cerebrovascular integrity.

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