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Full-Text Articles in Medicine and Health Sciences

Synaptic Development In Diverse Olfactory Neuron Classes Uses Distinct Temporal And Activity-Related Programs, Michael A. Aimino, Alison T. Depew, Lucas Restrepo, Timothy J. Mosca Nov 2022

Synaptic Development In Diverse Olfactory Neuron Classes Uses Distinct Temporal And Activity-Related Programs, Michael A. Aimino, Alison T. Depew, Lucas Restrepo, Timothy J. Mosca

Farber Institute for Neuroscience Faculty Papers

Developing neurons must meet core molecular, cellular, and temporal requirements to ensure the correct formation of synapses, resulting in functional circuits. However, because of the vast diversity in neuronal class and function, it is unclear whether or not all neurons use the same organizational mechanisms to form synaptic connections and achieve functional and morphologic maturation. Moreover, it remains unknown whether neurons united in a common goal and comprising the same sensory circuit develop on similar timescales and use identical molecular approaches to ensure the formation of the correct number of synapses. To begin to answer these questions, we took advantage …


Editorial: Glia-Mediated Neurotoxicity: Uncovering The Molecular Mechanisms, Amit K Srivastava, Barbara Lukomska, Lorraine Iacovitti Jul 2022

Editorial: Glia-Mediated Neurotoxicity: Uncovering The Molecular Mechanisms, Amit K Srivastava, Barbara Lukomska, Lorraine Iacovitti

Farber Institute for Neuroscience Faculty Papers

No abstract provided.


Γ-Secretase Promotes Drosophila Postsynaptic Development Through The Cleavage Of A Wnt Receptor, Lucas J Restrepo, Alison T Depew, Elizabeth R Moese, Stephen R Tymanskyj, Michael J Parisi, Michael A Aimino, Juan Carlos Duhart, Hong Fei, Timothy J Mosca Jul 2022

Γ-Secretase Promotes Drosophila Postsynaptic Development Through The Cleavage Of A Wnt Receptor, Lucas J Restrepo, Alison T Depew, Elizabeth R Moese, Stephen R Tymanskyj, Michael J Parisi, Michael A Aimino, Juan Carlos Duhart, Hong Fei, Timothy J Mosca

Farber Institute for Neuroscience Faculty Papers

Developing synapses mature through the recruitment of specific proteins that stabilize presynaptic and postsynaptic structure and function. Wnt ligands signaling via Frizzled (Fz) receptors play many crucial roles in neuronal and synaptic development, but whether and how Wnt and Fz influence synaptic maturation is incompletely understood. Here, we show that Fz2 receptor cleavage via the γ-secretase complex is required for postsynaptic development and maturation. In the absence of γ-secretase, Drosophila neuromuscular synapses fail to recruit postsynaptic scaffolding and cytoskeletal proteins, leading to behavioral deficits. Introducing presenilin mutations linked to familial early-onset Alzheimer's disease into flies leads to synaptic maturation phenotypes …


Response Of Astrocyte Subpopulations Following Spinal Cord Injury., R Vivian Allahyari, Nicolette M Heinsinger, Daniel Hwang, David A Jaffe, Javad Rasouli, Stephanie Shiers, Samantha J Thomas, Theodore J Price, Abdolmohamad Rostami, Angelo C Lepore Feb 2022

Response Of Astrocyte Subpopulations Following Spinal Cord Injury., R Vivian Allahyari, Nicolette M Heinsinger, Daniel Hwang, David A Jaffe, Javad Rasouli, Stephanie Shiers, Samantha J Thomas, Theodore J Price, Abdolmohamad Rostami, Angelo C Lepore

Farber Institute for Neuroscience Faculty Papers

There is growing appreciation for astrocyte heterogeneity both across and within central nervous system (CNS) regions, as well as between intact and diseased states. Recent work identified multiple astrocyte subpopulations in mature brain. Interestingly, one subpopulation (Population C) was shown to possess significantly enhanced synaptogenic properties in vitro, as compared with other astrocyte subpopulations of adult cortex and spinal cord. Following spinal cord injury (SCI), damaged neurons lose synaptic connections with neuronal partners, resulting in persistent functional loss. We determined whether SCI induces an enhanced synaptomodulatory astrocyte phenotype by shifting toward a greater proportion of Population C cells and/or increasing …