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Roles of astrocytes in the brain. Astrocytes are a type of brain glial cell. In 1899 Cajal showed the close spatial relationships between astrocytes and neurons in the brain. Subsequent anatomical work a century later showed that a single hippocampal astrocyte can form connections with ~100,000 synapses and that individual astrocytes are tiled in non-overlapping domains. Moreover, astrocytes are known to release signaling molecules through a variety of mechanisms. These studies raise the possibility that astrocytes may regulate neuronal function. A major project in the lab seeks to investigate this possibility in the context of neuronal networks in the healthy brain as well as for models of Huntington's disease.
Neuromodulation by P2X receptors in the brain. In the past we devoted considerable effort to exploring structure-function relationships in P2X receptors. One major new direction that we have decided to take is to explore the role of P2X receptors in neuronal networks. By understanding how P2X receptors are trafficked, activated and regulated in hippocampal neurons and microglia we are exploring how ATP shapes excitability and signaling. As part of this effort we are developing non-invasive in vivo FRET and single molecule imaging approaches (with designer engineered receptors) to image receptor mobility, activation and trafficking in neurons and microglia over broad spatial and temporal scales within intact neuronal networks.
Roles of astrocytes in the brain. Astrocytes are a type of brain glial cell. In 1899 Cajal showed the close spatial relationships between astrocytes and neurons in the brain. Subsequent anatomical work a century later showed that a single hippocampal astrocyte can form connections with ~100,000 synapses and that individual astrocytes are tiled in non-overlapping domains. Moreover, astrocytes are known to release signaling molecules through a variety of mechanisms. These studies raise the possibility that astrocytes may regulate neuronal function. A major project in the lab seeks to investigate this possibility in the context of neuronal networks in the healthy brain as well as for models of Huntington's disease.
Neuromodulation by P2X receptors in the brain. In the past we devoted considerable effort to exploring structure-function relationships in P2X receptors. One major new direction that we have decided to take is to explore the role of P2X receptors in neuronal networks. By understanding how P2X receptors are trafficked, activated and regulated in hippocampal neurons and microglia we are exploring how ATP shapes excitability and signaling. As part of this effort we are developing non-invasive in vivo FRET and single molecule imaging approaches (with designer engineered receptors) to image receptor mobility, activation and trafficking in neurons and microglia over broad spatial and temporal scales within intact neuronal networks.
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Manasi Iyer, Husniye Kantarci,Madeline H Cooper, Nicholas Ambiel,Sammy Weiser Novak,Leonardo R Andrade, Mable Lam, Graham Jones,Alexandra E Münch, Xinzhu Yu,Baljit S Khakh, Uri Manor,
Nature communicationsno. 1 (2024): 265-265
Matthias Ollivier,Joselyn S. Soto, Kay E. Linker, Stefanie L. Moye,Yasaman Jami-Alahmadi,Anthony E. Jones,Ajit S. Divakaruni,Riki Kawaguchi,James A. Wohlschlegel,Baljit S. Khakh
Fernando M. C. V. Reis,Sandra Maesta-Pereira, Matthias Ollivier,Peter J. Schuette,Ekayana Sethi, Blake A. Miranda, Emily Iniguez,Meghmik Chakerian,Eric Vaughn,Megha Sehgal, Darren C. T. Nguyen, Faith T. H. Yuan,
Nature Communicationsno. 1 (2024): 1-20
S Zipursky, John Lee,Alina Sergeeva,Goran Ahlsen,Seetha Mannepalli,Fabiana Bahna,Kerry Goodman,Baljit Khakh, Joshua Weiner,Lawrence Shapiro,Barry Honig
Research square (2024)
Current biology : CBno. 5 (2023): R200-R202
Annals of the New York Academy of Sciencesno. 1 (2023): 42-59
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