Synaptic Plasticity

Arnold, Don

Professor of Biological Sciences

The Arnold lab develops molecular tools for studying and manipulating neural circuits. We have developed novel recombinant probes known as FingRs, which label synaptic proteins such as PSD95, Gephyrin, and CamKii with high fidelity without causing off-target effects. We have used FingRs to visualize the formation of memories in larval zebrafish. These probes can also be used to ablate synapses, leading to functional disruption of neural circuits in a fast, efficient, and reversible manner. More recently, we developed ATLAS, a protein that mediates anterograde tracing of neural circuits from genetically determined neurons. We believe that ATLAS and its variants for tracing neuromodulatory circuits will be powerful tools for observing and manipulating neural circuits in the context of living organisms.

Chang, Karen T.

Associate Professor of Physiology and Neuroscience

Our lab is interested in understanding how neurons communicate with high fidelity to support complex brain functions. We aim to uncover the molecular and cellular mechanisms that enable precise synaptic signaling and to explore how disruptions in these processes contribute to neurodevelopmental and neurodegenerative disorders. Using Drosophila melanogaster as a genetically tractable model system, we integrate electrophysiology, molecular biology, confocal imaging, proteomics, and behavioral analysis to investigate synaptic function and plasticity.

Chen, Jeannie

Professor of Physiology and Neuroscience

The major focus of my laboratory is to study sensory neuron signaling and mechanisms of retinal degeneration and neurodegeneration using cell culture and rodent models. Through interdisciplinary collaboration, we deciphered basic mechanisms of sensory neuron signal transduction and disease pathogenesis in retinal degeneration and neurodegeneration where protein mis-folding and aggregation is an underlying cause of disease.

Cortes, Constanza

Assistant Professor of Gerontology

We investigate the mechanisms of exercise-associated neuroprotection in the context of aging and Alzheimer's disease. We utilize transgenic exercice-mimetic transgenic mice in combination with running interventions to isolate and prioritize novel 'exerkines' to move into pre-clinical trials. We are also building an 'exercise atlas' of the brain across the lifespan, with the ultimate goal of developing exercise in a pill as a novel intervention for Alzheimer's disease