PMID- 31924235 OWN - NLM STAT- MEDLINE DCOM- 20210212 LR - 20210212 IS - 1756-6606 (Electronic) IS - 1756-6606 (Linking) VI - 13 IP - 1 DP - 2020 Jan 10 TI - A microRNA signature of toxic extrasynaptic N-methyl-D-aspartate (NMDA) receptor signaling. PG - 3 LID - 10.1186/s13041-020-0546-0 [doi] LID - 3 AB - The cellular consequences of N-Methyl-D-Aspartate receptor (NMDAR) stimulation depend on the receptors' subcellular localization. Synaptic NMDARs promote plasticity and survival whereas extrasynaptic NMDARs mediate excitotoxicity and contribute to cell death in neurodegenerative diseases. The mechanisms that couple activation of extrasynaptic NMDARs to cell death remain incompletely understood. We here show that activation of extrasynaptic NMDARs by bath application of NMDA or L-glutamate leads to the upregulation of a group of 19 microRNAs in cultured mouse hippocampal neurons. In contrast, none of these microRNAs is induced upon stimulation of synaptic activity. Increased microRNA expression depends on the pri-miRNA processing enzyme Drosha, but not on de novo gene transcription. These findings suggest that toxic NMDAR signaling involves changes in the expression levels of particular microRNAs. FAU - Bas-Orth, Carlos AU - Bas-Orth C AUID- ORCID: 0000-0002-6037-8350 AD - Department of Neurobiology, Interdisciplinary Center for Neurosciences, Heidelberg University, 69120, Heidelberg, Germany. bas-orth@ana.uni-heidelberg.de. AD - Department of Medical Cell Biology, Institute for Anatomy and Cell Biology, Heidelberg University, Im Neuenheimer Feld 307, 69120, Heidelberg, Germany. bas-orth@ana.uni-heidelberg.de. FAU - Koch, Mirja AU - Koch M AD - Department of Neurobiology, Interdisciplinary Center for Neurosciences, Heidelberg University, 69120, Heidelberg, Germany. FAU - Lau, David AU - Lau D AD - Department of Neurobiology, Interdisciplinary Center for Neurosciences, Heidelberg University, 69120, Heidelberg, Germany. FAU - Buchthal, Bettina AU - Buchthal B AD - Department of Neurobiology, Interdisciplinary Center for Neurosciences, Heidelberg University, 69120, Heidelberg, Germany. FAU - Bading, Hilmar AU - Bading H AD - Department of Neurobiology, Interdisciplinary Center for Neurosciences, Heidelberg University, 69120, Heidelberg, Germany. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200110 PL - England TA - Mol Brain JT - Molecular brain JID - 101468876 RN - 0 (GABA-A Receptor Antagonists) RN - 0 (MicroRNAs) RN - 0 (Neurotoxins) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 3KX376GY7L (Glutamic Acid) RN - 6384-92-5 (N-Methylaspartate) RN - EC 3.1.26.3 (Drosha protein, mouse) RN - EC 3.1.26.3 (Ribonuclease III) RN - SIV03811UC (Kainic Acid) RN - TE7660XO1C (Glycine) RN - Y37615DVKC (Bicuculline) SB - IM MH - Animals MH - Bicuculline/pharmacology MH - Cells, Cultured MH - GABA-A Receptor Antagonists/pharmacology MH - Glutamic Acid/pharmacology MH - Glycine/pharmacology/toxicity MH - Hippocampus/cytology MH - Kainic Acid/toxicity MH - Mice MH - Mice, Inbred C57BL MH - MicroRNAs/biosynthesis/*genetics MH - N-Methylaspartate/pharmacology/*toxicity MH - Neurotoxins/pharmacology/*toxicity MH - Rats, Sprague-Dawley MH - Receptors, N-Methyl-D-Aspartate/*physiology MH - Ribonuclease III/physiology MH - Seizures/chemically induced MH - Signal Transduction/*genetics MH - Specific Pathogen-Free Organisms MH - Subcellular Fractions/metabolism MH - *Transcriptome MH - Up-Regulation/drug effects PMC - PMC6954508 OTO - NOTNLM OT - Biomarkers OT - Cell death OT - Kainate OT - MicroRNA OT - NMDA receptor OT - Neurodegeneration OT - Neurotransmitter receptors OT - Seizures COIS- The authors declare that they have no competing interests. EDAT- 2020/01/12 06:00 MHDA- 2021/02/13 06:00 PMCR- 2020/01/10 CRDT- 2020/01/12 06:00 PHST- 2019/10/15 00:00 [received] PHST- 2020/01/05 00:00 [accepted] PHST- 2020/01/12 06:00 [entrez] PHST- 2020/01/12 06:00 [pubmed] PHST- 2021/02/13 06:00 [medline] PHST- 2020/01/10 00:00 [pmc-release] AID - 10.1186/s13041-020-0546-0 [pii] AID - 546 [pii] AID - 10.1186/s13041-020-0546-0 [doi] PST - epublish SO - Mol Brain. 2020 Jan 10;13(1):3. doi: 10.1186/s13041-020-0546-0.