Could deep brain stimulation change not only brain circuits, but also the genes that help those circuits communicate?
This may be an important next chapter in deep brain stimulation (DBS). Gene expression refers to how brain cells turn specific genes on or off to influence their function. Neuron al assemblies are groups of brain cells that fire together to process information.
Haley Moore and colleagues describe in a new paper in Nature how electrical stimulation of human brain tissue can strengthen coordinated neuronal activity and activate specific genetic programs involved in synaptic plasticity. The implications for the future of DBS are exciting.
Key points:
- Electrical stimulation strengthened neuronal assemblies, increasing coordinated firing and changing how neurons participated in functional brain networks.
- Stimulation produced cell-type-specific changes in gene expression, particularly in excitatory neurons, involving genes such as FOS, EGR1, BDNF and HOMER1 that are linked to neuronal activity and synaptic function.
- By combining electrical recordings and single-cell genomic analyses, the researchers connected stimulation-induced changes in brain activity to molecular pathways and identified related signatures following stimulation in living human brains.
What they discovered was fascinating: the electrical stimulation does more than just spark activity; it actually strengthens the teamwork and connections between specific groups of brain cells.
Even more importantly, the researchers found that this physical boost is directly tied to changes in how certain genes are turned “on” or “off” within those specific cells. They also confirmed that these same genetic patterns appear in living human brains after stimulation, proving that their lab findings reflect real-world biology.
This research provides a crucial missing link between brain activity and genetics. By understanding exactly which genes and cell types respond to electrical stimulation, scientists can now design smarter, more targeted brain therapies. This paves the way for future treatments that can precisely harness the brain’s own genetic and electrical networks to heal, adapt, and restore cognitive health.
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Stimulation of human cortex reorganizes neural assemblies and induces cell-type-specific gene regulatory programs, establishing an ex vivo framework that links stimulation parameters to circuit and transcriptional responses for designing targeted neuromodulatory therapies.