🧠 Want to see how a pair of single neurons can meet and form a synapse inside a heart-shaped microstructure?
In a new iScience paper, Amos et al. present an integrated in vitro platform to study synaptic transmission in simplified, human-relevant circuits. By combining PDMS microstructures with hiPSC-derived neurons, they isolated hundreds of parallel neuronal pairs on a single chip and kept them viable and electrically active for more than 100 days, creating a controlled system for studying human synapses.
Synaptic staining revealed pre- and postsynaptic marker colocalization right at the neuronal pair interface — but were these connections functional? Well... Yes! Using the MaxOne system with MaxOne chips, the team showed that functional coupling was reversibly reduced upon application of the glutamatergic blockers NBQX and AP5, together with a drop in postsynaptic spike probability.
They further showed that synaptic transmission could be modulated by extracellular stimulation: the team observed increased postsynaptic spike probability after a 5 Hz electrical stimulation paradigm. Together, these results highlight isolated neuronal pairs on MaxWell HD-MEAs as a promising framework to follow synaptic transmission over time and to model human-relevant synaptic dysfunction in a controlled setting.
👉 Read the full publication here:
mxwbio.com/resources/iscienc…
👏 Congratulations to Giulia Amos (
@amos_giulia) , Dr. Vaiva Vasiliauskaite, Dr. Jens Duru, Maria Leonor Saramago, Tim Schmid, Alexandre Suter, Ferran Cid, Joël Küchler, Dr. Tobias Ruff, Dr. János Vörös, and Dr. Katarina Vulić from the Laboratory of Biosensors and Bioelectronics (LBB), Institute for Biomedical Engineering, Center for Project-Based Learning D-ITET,
@ETH Zürich, Zurich, Switzerland.
#MaxOne #MicrophysiologicalSystems #Electrophyiology #HDMEA @iScience_CP