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Prof.
Washington University in St Louis, Missouri
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Schedule
Monday, October 5, 2020
4:00 PM Europe/Lisbon
Domain
NeuroscienceHost
Brain-Body Interactions
Duration
70 minutes
Immune cells and their derived molecules have major impact on brain function. Mice deficient in adaptive immunity have impaired cognitive and social function compared to that of wild-type mice. Importantly, replenishment of the T cell compartment in immune deficient mice restored proper brain function. Despite the robust influence on brain function, T cells are not found within the brain parenchyma, a fact that only adds more mystery into these enigmatic interactions between T cells and the brain. Our results suggest that meningeal space, surrounding the brain, is the site where CNS-associated immune activity takes place. We have recently discovered a presence of meningeal lymphatic vessels that drain CNS molecules and immune cells to the deep cervical lymph nodes. This communication between the CNS and the peripheral immunity is playing a key role in neurophysiology and in several CNS disorders. Interestingly, meningeal lymphatics are impaired in aging and their dysfunction may be related to age-related cognitive decline as well as to Alzheimer’s pathology. In addition to providing new insights into age-related disorders, meningeal lymphatics may also serve as a novel therapeutic target for these diseases and are worth of in-depth mechanistic exploration.
Jonathan Kipnis
Prof.
Washington University in St Louis, Missouri
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