PMID- 38195548 OWN - NLM STAT- MEDLINE DCOM- 20240111 LR - 20240116 IS - 2158-3188 (Electronic) IS - 2158-3188 (Linking) VI - 14 IP - 1 DP - 2024 Jan 9 TI - D-Cycloserine enhances the bidirectional range of NMDAR-dependent hippocampal synaptic plasticity. PG - 18 LID - 10.1038/s41398-023-02725-7 [doi] LID - 18 AB - The partial N-methyl-D-aspartate receptor (NMDAR) agonist D-Cycloserine (DCS) has been evaluated for the treatment of a wide variety of psychiatric disorders, including dementia, schizophrenia, depression and for the augmentation of exposure-based psychotherapy. Most if not all of the potential psychiatric applications of DCS target an enhancement or restitution of cognitive functions, learning and memory. Their molecular correlate is long-term synaptic plasticity; and many forms of synaptic plasticity depend on the activation of NMDA receptors. Here, we comprehensively examined the modulation of different forms of synaptic plasticity in the hippocampus by DCS and its mechanism. We found that DCS positively modulates NMDAR-dependent forms of long-term synaptic plasticity (long-term synaptic potentiation, LTP, and long-term synaptic depression, LTD) in hippocampal brain slices of juvenile rats without affecting basal synaptic transmission. DCS binds to the D-serine/glycine binding site of the NMDAR. Pharmacological inhibition of this site prevented the induction of LTP, whereas agonism at the D-serine/glycine binding site augmented LTP and could functionally substitute for weak LTP induction paradigms. The most probable origin of endogenous D-serine are astrocytes, and its exocytosis is regulated by astrocytic metabotropic glutamate receptors (mGluR1). Functional eradication of astrocytes, inhibition of mGluR1 receptors and G-protein signaling in astrocytes adjacent to postsynaptic neurons prevented the induction of NMDAR-dependent forms of LTP and LTD. Our results support the enhancement of a bidirectional range of NMDAR-dependent hippocampal synaptic plasticity by DCS and D-serine-mediated gliotransmission. Therefore, the D-serine/glycine-binding site in NMDAR is a major target for psychopharmacological interventions targeting plasticity-related disorders. CI - (c) 2024. The Author(s). FAU - Vestring, Stefan AU - Vestring S AUID- ORCID: 0000-0001-9150-8712 AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. stefan.vestring@uniklinik-freiburg.de. AD - Berta-Ottenstein-Programme for Clinician Scientists, Faculty of Medicine, University of Freiburg, D-79110, Freiburg, Germany. stefan.vestring@uniklinik-freiburg.de. FAU - Dorner, Alexandra AU - Dorner A AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Scholliers, Jonas AU - Scholliers J AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Ehrenberger, Konstantin AU - Ehrenberger K AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Kiss, Andrea AU - Kiss A AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Arenz, Luis AU - Arenz L AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Theiss, Alice AU - Theiss A AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Rossner, Paul AU - Rossner P AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Frase, Sibylle AU - Frase S AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Du Vinage, Catherine AU - Du Vinage C AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Wendler, Elisabeth AU - Wendler E AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. FAU - Serchov, Tsvetan AU - Serchov T AUID- ORCID: 0000-0002-2234-2875 AD - Centre National de la Recherche Scientifique (CNRS) UPR3212, Universite de Strasbourg, Institut des Neurosciences Cellulaires et Integratives (INCI), Strasbourg, France. AD - University of Strasbourg, Institute for Advanced Study (USIAS), Strasbourg, France. FAU - Domschke, Katharina AU - Domschke K AUID- ORCID: 0000-0002-2550-9132 AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. AD - Center for Basics in Neuromodulation (NeuoModulBasics), Faculty of Medicine, University of Freiburg, D-79106, Freiburg, Germany. FAU - Bischofberger, Josef AU - Bischofberger J AD - Department of Biomedicine, University of Basel, CH-4056, Basel, Switzerland. FAU - Normann, Claus AU - Normann C AUID- ORCID: 0000-0001-5693-8936 AD - Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, D-79104, Freiburg, Germany. AD - Center for Basics in Neuromodulation (NeuoModulBasics), Faculty of Medicine, University of Freiburg, D-79106, Freiburg, Germany. LA - eng PT - Journal Article DEP - 20240109 PL - United States TA - Transl Psychiatry JT - Translational psychiatry JID - 101562664 RN - 95IK5KI84Z (Cycloserine) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 452VLY9402 (Serine) RN - TE7660XO1C (Glycine) SB - IM MH - Humans MH - Animals MH - Rats MH - *Cycloserine/pharmacology MH - *Receptors, N-Methyl-D-Aspartate MH - Neuronal Plasticity MH - Serine MH - Glycine MH - Hippocampus PMC - PMC10776623 COIS- The authors declare no competing interests. EDAT- 2024/01/10 00:42 MHDA- 2024/01/11 07:42 PMCR- 2024/01/09 CRDT- 2024/01/09 23:40 PHST- 2022/09/26 00:00 [received] PHST- 2023/12/21 00:00 [accepted] PHST- 2023/11/24 00:00 [revised] PHST- 2024/01/11 07:42 [medline] PHST- 2024/01/10 00:42 [pubmed] PHST- 2024/01/09 23:40 [entrez] PHST- 2024/01/09 00:00 [pmc-release] AID - 10.1038/s41398-023-02725-7 [pii] AID - 2725 [pii] AID - 10.1038/s41398-023-02725-7 [doi] PST - epublish SO - Transl Psychiatry. 2024 Jan 9;14(1):18. doi: 10.1038/s41398-023-02725-7.