Nature
November 5, 2025
Chenyu Yue, Nan Wang, Haojiang Zhai et al.
22 citations
Adenosine signaling is identified as the central mechanism underlying the rapid antidepressant effects of ketamine and electroconvulsive therapy (ECT). Experiments in mice using genetically encoded adenosine sensors and real-time optical recordings show that both therapies cause strong adenosine surges in mood-regulatory brain regions such as the medial prefrontal cortex and hippocampus. Disrupting A1 and A2A adenosine receptors genetically or pharmacologically abolishes the therapeutic effects, establishing adenosine's essential role. Ketamine increases adenosine by modulating cellular metabolism without causing neuronal hyperactivity. Newly developed ketamine derivatives that enhance adenosine signaling show improved antidepressant efficacy with fewer side effects. Acute intermittent hypoxia, a non-pharmacological intervention, also increases brain adenosine and produces antidepressant effects, paralleling ketamine and ECT.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
April 2, 2025
Cong Lin, Xiaoxuan Zhou, Mingqi Li et al.
14 citations
In a mouse model of inflammation-induced depression, S-ketamine (S-KET) reduced depressive-like behaviors and lowered pro-inflammatory factors in the medial prefrontal cortex, while R-ketamine (R-KET) did not. S-KET bound directly to the protein SIRT2 at the Q167 residue, enhancing its interaction with NF-κB subunit p65, which reduced acetylation and suppressed pro-inflammatory gene expression. Experiments using RNA interference, a SIRT2 inhibitor (AK-7), and pharmacological blockade confirmed that SIRT2 is essential for these effects. The findings indicate that SIRT2 mediates the therapeutic actions of S-KET, suggesting a target for treating inflammation-associated depression.
ACS Pharmacology & Translational Science
May 15, 2025
Haojiang Zhai, Hongshuang Wang, Haohong Li et al.
3 citations
Psychedelics like psilocybin, LSD, and DMT may alter sleep architecture, particularly by influencing rapid eye movement (REM) sleep and vivid dreaming. This viewpoint suggests these substances could have therapeutic potential for sleep disorders, though their impact on sleep remains underexplored. The authors provide a perspective on how psychedelics might affect sleep phases and dreaming, opening an emerging area for sleep therapy.