Syn-GCaMP6m AAV (Serotype 9)

Syn-GCaMP6m AAV (serotype 9) is a highly efficient viral vector system specifically designed for neuronal calcium imaging. This recombinant adeno-associated virus (AAV) offers several key advantages, making it an ideal tool for neuroscience research. The serotype 9 capsid exhibits excellent neuronal tropism, enabling widespread transduction throughout the central nervous system with low immunogenicity. The vector carries the Syn-GCaMP6m construct, which combines a neuron-specific synapsin promoter with the GCaMP6m calcium indicator—one of the most sensitive genetically encoded calcium indicators currently available. This allows for robust and cell-type-specific expression of the calcium sensor in neurons without significant expression in glial cells.

Syn-GCaMP6m AAV (serotype 9) is widely used for monitoring neuronal activity in acute or chronic preparations under various experimental paradigms. Its primary application is in vivo calcium imaging, allowing researchers to record population-level neuronal dynamics at single-cell resolution. The high sensitivity and fast kinetics of GCaMP6m make it particularly suitable for detecting sparse action potentials and tracking rapid neural circuit dynamics. Common uses include studying sensory processing, motor control, decision-making, learning, and memory in awake, behaving animals. When combined with miniature microscopes or fiber photometry systems, this vector allows for long-term longitudinal imaging of the same neuronal population. The neuron-specific expression pattern avoids confounding signals from glial cells, providing clearer functional readouts. Furthermore, this tool can be combined with optogenetic techniques for all-optical manipulation of neural circuits or with other viral tracers for comprehensive circuit mapping.