What question did this study set out to answer?

The study aims to characterize the signaling behavior of serotonergic psychedelics at different serotonin receptors to understand their psychoactivity and safety.

April 12, 2026European NeuropsychopharmacologyOpen Access

Pathway-selective signaling of serotonergic psychedelics at 5-HT receptors: Implications for psychoactivity, safety, and therapeutic potential

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Authors

DRDeborah Rudin JVJan Valenta HRHelene Rolli

Discussion

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Overview

Research characterizes receptor signaling of psychedelics in cell lines, suggesting safety and therapeutic implications in treatments.

Key Points

The study aims to characterize the signaling behavior of serotonergic psychedelics at different serotonin receptors to understand their psychoactivity and safety.
Used stable cell lines for bioassays targeting phospholipase C activation and other signaling pathways.
Investigated the activation of 5-HT 2A, 5-HT 2B, 5-HT 2C, and 5-HT 1A receptors.
Analyzed inositol monophosphate formation and recruitment of β-arrestin2.
Correlated findings with known human dosing data.
IP1 formation was identified as the most reliable measure of 5-HT 2 receptor activation.
5-HT 2A receptor activation showed strong correlation with psychoactive doses.
Psychedelics demonstrated signaling bias toward specific pathways, notably PLC-IP1 and PLA2-AA at the 5-HT 2A receptor.
Findings suggest reduced cardiac risk with intermittent use of psychedelics.

Cite This Study

Rudin et al. (2026) studied this question.

synapsesocial.com/papers/69db36a04fe01fead37c4ade https://doi.org/10.1016/j.euroneuro.2026.112835

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April 12, 2026European NeuropsychopharmacologyOpen Access

Pathway-selective signaling of serotonergic psychedelics at 5-HT receptors: Implications for psychoactivity, safety, and therapeutic potential

View Full Paper

Ask AI

Bookmark

Authors

DRDeborah Rudin JVJan Valenta HRHelene Rolli

Discussion

Member takes

Overview

Research characterizes receptor signaling of psychedelics in cell lines, suggesting safety and therapeutic implications in treatments.

Key Points

The study aims to characterize the signaling behavior of serotonergic psychedelics at different serotonin receptors to understand their psychoactivity and safety.
Used stable cell lines for bioassays targeting phospholipase C activation and other signaling pathways.
Investigated the activation of 5-HT 2A, 5-HT 2B, 5-HT 2C, and 5-HT 1A receptors.
Analyzed inositol monophosphate formation and recruitment of β-arrestin2.
Correlated findings with known human dosing data.
IP1 formation was identified as the most reliable measure of 5-HT 2 receptor activation.
5-HT 2A receptor activation showed strong correlation with psychoactive doses.
Psychedelics demonstrated signaling bias toward specific pathways, notably PLC-IP1 and PLA2-AA at the 5-HT 2A receptor.
Findings suggest reduced cardiac risk with intermittent use of psychedelics.

Cite This Study

Rudin et al. (2026) studied this question.

synapsesocial.com/papers/69db36a04fe01fead37c4ade https://doi.org/10.1016/j.euroneuro.2026.112835

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