Abstract
Aims:
Astrocytes have been revealed as a controller of synaptic plasticity and memory via releasing gliotransmitters. Our recent findings showed that reactive sulfur species (RSS), including hydrogen sulfide (H2S) and polysulfide (H2Sn), regulated the availability of
Results:
We found that hippocampal RSS level increased significantly in response to learning. We further demonstrated that the activity-triggered RSS signal controlled memory formation by using pharmacological and genetic approaches. The RSS-supporting memory was primarily conferred by enzymes that were mainly located in astrocytes, including cystathionine β-synthase (CBS) and mercaptopyruvate sulfurtransferase (3-MST), and the memory-promoting effects were mostly dependent on sulfration of the NR2A subunit of N-methyl-
Innovation and Conclusion:
These results suggest that glial-derived RSS signals can serve as direct gliotransmitters that regulate memory formation through the redox modulation of postsynaptic receptors; this conclusion will enrich the gliotransmission hypothesis.
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