Princeton, New Jersey, United States
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One of my Material Change Institute Fellows Aman Merchant shared this with our Class today and it resonated so well as we were talking about startup…
One of my Material Change Institute Fellows Aman Merchant shared this with our Class today and it resonated so well as we were talking about startup…
Liked by Scott Alpizar
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This #FellowshipFriday we are highlighting Mahum Jamal ⭐ Mahum is an award winning film maker who is interested in the intersection of art🎨and…
This #FellowshipFriday we are highlighting Mahum Jamal ⭐ Mahum is an award winning film maker who is interested in the intersection of art🎨and…
Liked by Scott Alpizar
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CDL is thrilled to present the complete list of the 250+ Graduating Ventures from the 2023/24 CDL Program year! Over the past year, high-potential…
CDL is thrilled to present the complete list of the 250+ Graduating Ventures from the 2023/24 CDL Program year! Over the past year, high-potential…
Liked by Scott Alpizar
Experience & Education
Licenses & Certifications
Publications
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The potassium channel subunit Kvβ1 serves as a major control point for synaptic facilitation
Proceedings of the National Academy of Sciences
Nerve terminals generally engage in two opposite and essential forms of synaptic plasticity (facilitation or depression) that play critical roles in learning and memory. While the molecular components of both types of terminals are similar with regards to vesicle fusion, much less is known about their molecular control of electrical signaling. Measurements of the electrical impulses (action potentials) underlying these two forms of plasticity have been difficult in small nerve terminals due to…
Nerve terminals generally engage in two opposite and essential forms of synaptic plasticity (facilitation or depression) that play critical roles in learning and memory. While the molecular components of both types of terminals are similar with regards to vesicle fusion, much less is known about their molecular control of electrical signaling. Measurements of the electrical impulses (action potentials) underlying these two forms of plasticity have been difficult in small nerve terminals due to their size. In this study we deployed optical physiology measurements to overcome this size barrier. Here, we identify a unique mechanism (Kvβ1 subunit) that enables broadening of the presynaptic action potentials that selectively supports synaptic facilitation, but does not alter any other aspects of nerve terminal function.
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Subcellular control of membrane excitability in the axon
Current Opinion in Neurobiology
Ion channels are microscopic pore proteins in the membrane that open and close in response to chemical and electrical stimuli. This simple concept underlies rapid electrical signaling in the brain as well as several important aspects of neural plasticity. Although the soma accounts for less than 1% of many neurons by membrane area, it has been the major site of measuring ion channel function. However, the axon is one of the longest processes found in cellular biology and hosts a multitude of…
Ion channels are microscopic pore proteins in the membrane that open and close in response to chemical and electrical stimuli. This simple concept underlies rapid electrical signaling in the brain as well as several important aspects of neural plasticity. Although the soma accounts for less than 1% of many neurons by membrane area, it has been the major site of measuring ion channel function. However, the axon is one of the longest processes found in cellular biology and hosts a multitude of critical signaling functions in the brain. Not only does the axon initiate and rapidly propagate action potentials (APs) across the brain but it also forms the presynaptic terminals that convert these electrical inputs into chemical outputs. Here, we review recent advances in the physiological role of ion channels within the diverse landscape of the axon and presynaptic terminals.
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Loss of Neurofascin-186 Disrupts Alignment of AnkyrinG Relative to its Binding Partners in the Axon Initial Segment
Frontiers in Cellular Neuroscience
The axon initial segment (AIS) is a specialized region within the proximal portion of the axon that initiates action potentials thanks in large part to an enrichment of sodium channels. The scaffolding protein ankyrinG (AnkG) is essential for the recruitment of sodium channels as well as several other intracellular and extracellular proteins to the AIS. In the present study, we explore the role of the cell adhesion molecule (CAM) neurofascin-186 (NF-186) in arranging the individual molecular…
The axon initial segment (AIS) is a specialized region within the proximal portion of the axon that initiates action potentials thanks in large part to an enrichment of sodium channels. The scaffolding protein ankyrinG (AnkG) is essential for the recruitment of sodium channels as well as several other intracellular and extracellular proteins to the AIS. In the present study, we explore the role of the cell adhesion molecule (CAM) neurofascin-186 (NF-186) in arranging the individual molecular components of the AIS in cultured rat hippocampal neurons. Using a CRISPR depletion strategy to ablate NF expression, we found that the loss of NF selectively perturbed AnkG accumulation and its relative proximal distribution within the AIS. We found that the overexpression of sodium channels could restore AnkG accumulation, but not its altered distribution within the AIS without NF present. We go on to show that although the loss of NF altered AnkG distribution, sodium channel function within the AIS remained normal. Taken together, these results demonstrate that the regulation of AnkG and sodium channel accumulation within the AIS can occur independently of one another, potentially mediated by other binding partners such as NF.
Honors & Awards
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Trainee Professional Development Award
Society for Neuroscience
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GAANN Fellowship
Dartmouth College Department of Biological Sciences
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Forensic Science Outstanding Undergraduate Research
University of New Haven Forensic Science Department
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Outstanding Undergraduate Tutor
University of New Haven
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Who's Who Among American Colleges and Universities
University of New Haven
Languages
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English
Native or bilingual proficiency
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Spanish
Elementary proficiency
Organizations
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Society for Neuroscience
Member
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American Association for the Advancement of Science
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American Academy of Forensic Sciences
Member
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American Chemical Society
Member
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American Institute of Biological Sciences
Member
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Health Occupation Students of America
Member
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More activity by Scott
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Many of you have asked me what MatchPlay is after my recent posts from our conference so here it is: After thinking about how to best explain what…
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Teva BD is growing! We are looking for a BD Financial Analyst to join our team! If you or someone you know have had at least 2 years of experience…
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While there are many exciting updates and plans ahead, WIN's founder and CEO, Philip Loew often reflects on the 3 main reasons he started this new…
While there are many exciting updates and plans ahead, WIN's founder and CEO, Philip Loew often reflects on the 3 main reasons he started this new…
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4/5 of the top early-stage VC firms by number of unicorns invest based on large-portfolio theory (which many investors derogatorily refer to as…
4/5 of the top early-stage VC firms by number of unicorns invest based on large-portfolio theory (which many investors derogatorily refer to as…
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I am excited to share that the Venture Deals Summer 2024 course by Techstars is now open for enrollment! Having taken this course before, I can…
I am excited to share that the Venture Deals Summer 2024 course by Techstars is now open for enrollment! Having taken this course before, I can…
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I am excited to announce that BrainStorm Therapeutics has been awarded a Phase 1 SBIR grant from the National Science Foundation. This funding will…
I am excited to announce that BrainStorm Therapeutics has been awarded a Phase 1 SBIR grant from the National Science Foundation. This funding will…
Liked by Scott Alpizar
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I’m happy to share that I started a new position as a Venture Fellow in Cohort IV at the Material Change Institute! This program is training new…
I’m happy to share that I started a new position as a Venture Fellow in Cohort IV at the Material Change Institute! This program is training new…
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This year, #NJSTEMMonth impacted over 71,000! Our STEM Showcase booklet highlights organizations from all across the state that have worked…
This year, #NJSTEMMonth impacted over 71,000! Our STEM Showcase booklet highlights organizations from all across the state that have worked…
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