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Updated: Jun 8, 2026

Rapid In Situ Hybridization using Oligonucleotide Probes on Paraformaldehyde-prefixed Brain of Rats with Serotonin Syndrome
Published on: September 23, 2015
No link of serotonin 2C receptor editing to serotonin transporter genotype
Rebecca Lyddon1, Edwin Cuppen, Vahram Haroutunian
1James J. Peters Veterans Affairs Medical Center, Bronx, New York, USA
Abstract:
RNA editing is a post-transcriptional process, which has the potential to alter the function of encoded proteins. In particular, serotonin 2C receptor (5-HT2cR) mRNA editing can produce 24 protein isoforms of varying functionality. Rodent studies have shown that 5-HT2cR editing is dynamically modulated in response to environmental challenges. Basal extracellular serotonin, which is strongly influenced by serotonin transporter (SERT), was proposed as a potential trigger for this modulation; however, the data remain inconclusive. Here, 5-HT2cR editing is evaluated in SERT mutant versus wild-type rats, and in humans with different SERT genotypes. Our findings argue against the hypothesis that 5-HT2cR editing efficiency is regulated by extracellular serotonin levels.
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