PMID- 32601776 OWN - NLM STAT- MEDLINE DCOM- 20220113 LR - 20240226 IS - 1573-6830 (Electronic) IS - 0272-4340 (Linking) VI - 41 IP - 7 DP - 2021 Oct TI - Roles and Interaction of the MAPK Signaling Cascade in Abeta25-35-Induced Neurotoxicity Using an Isolated Primary Hippocampal Cell Culture System. PG - 1497-1507 LID - 10.1007/s10571-020-00912-4 [doi] AB - Alzheimer's disease (AD) is characterized with increased formation of amyloid-beta (Abeta) in the brain. Abeta peptide toxicity is associated with disturbances of several intracellular signaling pathways such as mitogen activated protein kinases (MAPKs). The aim of this study was to investigate the role of MAPKs and their interactions in Abeta-induced neurotoxicity using isolated hippocampal neurons from the rat. Primary hippocampal cells were cultured in neurobasal medium for 4 days. Cells were treated with Abeta25-35 and/or MAPKs inhibitors for 24 h. Cell viability was determined by an MTT assay and phosphorylated levels of P38, JNK, and ERK were measured by Western blots. Abeta treatment (10-40 microM) significantly decreased hippocampal cell viability in a dose-dependent manner. Inhibition of P38 and ERK did not restore cell viability, while JNK inhibition potentiated the Abeta-induced neurotoxicity. Compared to the controls, Abeta treatment increased levels of phosphorylated JNK, ERK, and c-Jun, while it had no effect on levels of phosphorylated P38. In addition, P38 inhibition led to decreased expression levels of phosphorylated ERK; inhibition of JNK resulted in decreased expression of c-Jun; and inhibition of ERK, decreased phosphorylated levels of JNK. These results strongly suggest that P38, ERK, and JNK are not independently involved in Abeta-induced toxicity in the hippocampal cells. In AD, which is a multifactorial disease, inhibiting a single member of the MAPK signaling pathway, does not seem to be sufficient to mitigate Abeta-induced toxicity and thus their interactions with each other or potentially with different signaling pathways should be taken into account. CI - (c) 2020. Springer Science+Business Media, LLC, part of Springer Nature. FAU - Iloun, Parisa AU - Iloun P AD - Physiology Department, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. AD - Neurophysiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. FAU - Hooshmandi, Etrat AU - Hooshmandi E AD - Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. AD - Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Velenjak, Chamran Exp. Way, P.O. Box 19615-1178, Tehran, Iran. FAU - Gheibi, Sevda AU - Gheibi S AD - Neurophysiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. FAU - Kashfi, Khosrow AU - Kashfi K AD - Department of Molecular, Cellular and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, New York, USA. FAU - Ghasemi, Rasoul AU - Ghasemi R AUID- ORCID: 0000-0002-1394-6853 AD - Physiology Department, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. rghasemi60@sbmu.ac.ir. AD - Neurophysiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. rghasemi60@sbmu.ac.ir. FAU - Ahmadiani, Abolhassan AU - Ahmadiani A AD - Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Velenjak, Chamran Exp. Way, P.O. Box 19615-1178, Tehran, Iran. aahmadiani@yahoo.com. LA - eng GR - 958343/National Institute for Medical Research Development/ PT - Journal Article DEP - 20200629 PL - United States TA - Cell Mol Neurobiol JT - Cellular and molecular neurobiology JID - 8200709 RN - 0 (Amyloid beta-Peptides) RN - 0 (Neuroprotective Agents) RN - 0 (Peptide Fragments) RN - 0 (amyloid beta-protein (25-35)) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Alzheimer Disease/*metabolism MH - Amyloid beta-Peptides/*metabolism MH - Animals MH - Female MH - Hippocampus/*metabolism MH - JNK Mitogen-Activated Protein Kinases/metabolism MH - MAP Kinase Signaling System/*physiology MH - Mitogen-Activated Protein Kinases/metabolism MH - Neurons/metabolism MH - Neuroprotective Agents/pharmacology MH - Peptide Fragments/*metabolism MH - Rats, Wistar MH - Signal Transduction/drug effects/physiology MH - Rats OTO - NOTNLM OT - Alzheimer disease OT - Amyloid-beta OT - ERK OT - JNK OT - MAPK signaling pathway OT - P38 EDAT- 2020/07/01 06:00 MHDA- 2022/01/14 06:00 CRDT- 2020/07/01 06:00 PHST- 2020/01/29 00:00 [received] PHST- 2020/06/22 00:00 [accepted] PHST- 2020/07/01 06:00 [pubmed] PHST- 2022/01/14 06:00 [medline] PHST- 2020/07/01 06:00 [entrez] AID - 10.1007/s10571-020-00912-4 [pii] AID - 10.1007/s10571-020-00912-4 [doi] PST - ppublish SO - Cell Mol Neurobiol. 2021 Oct;41(7):1497-1507. doi: 10.1007/s10571-020-00912-4. Epub 2020 Jun 29.