Medium Spiny GABAergic Neurons

Origin: Human iPSC line

Size: Various sizes available; see table below

Cryopreserved

Calcium Influx Assays:

Changes in calcium concentration are closely tied to neuronal activity as action potentials are associated with large pre-synaptic calcium influx and a notable rise in postsynaptic calcium at excitatory synapses. This can be observed experimentally by stimulating the neurons or culturing the neurons under suitable conditions to form mature networks that exhibit spontaneous oscillations.  The influx of calcium can be measured using a variety of calcium-sensitive fluorescent dyes, which are commercially available.

Medium Spiny Neurons (BX-0700) were cultured in 96-well plates for three weeks and then loaded with Calbryte-520. Spontaneous oscillations were recorded in all wells simultaneously using an FDSS/µCell Functional Drug Screening System (Hamamatsu).

MEA Assays:

Multi-electrode arrays (MEA) measure extracellular voltage changes that occur as neurons fire action potentials. These measurements reveal the firing patterns of individual neurons as well as the patterns of neuronal networks that exist in the cell culture. Such measurements are non-invasive and allow for repeated recordings.

Medium Spiny Neurons (BX-0700) were cultured on Axion Biosystems MEA plates for several weeks and recorded regularly.

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