PMID- 24161275 OWN - NLM STAT- MEDLINE DCOM- 20140827 LR - 20161125 IS - 1873-7544 (Electronic) IS - 0306-4522 (Linking) VI - 256 DP - 2014 Jan 3 TI - Human apolipoprotein E4 modulates the expression of Pin1, Sirtuin 1, and Presenilin 1 in brain regions of targeted replacement apoE mice. PG - 360-9 LID - S0306-4522(13)00861-0 [pii] LID - 10.1016/j.neuroscience.2013.10.017 [doi] AB - The apolipoprotein E4 (apoE4) allele is consistently associated with increased risk for Alzheimer's disease (AD). We investigated the molecular mechanism of this susceptibility by analyzing the levels of genes involved in AD pathogenesis in transgenic mice expressing human apoE3 or apoE4 isoforms. mRNA and protein levels of Pin1, Sirtuin 1 (Sirt1), Presenilin 1 (PS1), and pro-Brain-derived Neurotrophic Factor (BDNF) were analyzed in brain regions affected by neuropathological changes in AD. Pin1 mRNA was significantly higher in the hippocampus of apoE4 mice than in apoE3 controls, whereas lower expression was detected in the entorhinal and parietal cortices. Reduced Pin1 levels may increase neurofibrillary degeneration and amyloidogenic processes, while compensatory mechanisms may take place in the hippocampus to balance spatial memory deficits. Sirt1 levels were significantly reduced in the frontal cortex of apoE4 mice. Sirt1 reduction may hinder its protective role against the formation of plaques and tangles and diminish its anti-inflammatory actions. Sirt1 decrease may also play a role in apoE4-associated memory impairments. Moreover, in apoE4 mice PS1 mRNA levels were lower in the frontal cortex. Lower PS1 expression may hamper gamma-secretase function, thus affecting amyloid precursor protein processing. Pro-BDNF mRNA levels did not differ between apoE3 and apoE4 mice in any region analyzed. This study showed dysregulated expression of Pin1, Sirt1, and PS1 genes in different cerebral areas of apoE4 mice, suggesting that these changes may play a role in the mechanism of AD vulnerability. CI - Copyright (c) 2013 IBRO. Published by Elsevier Ltd. All rights reserved. FAU - Lattanzio, F AU - Lattanzio F AD - Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, via Irnerio 48, 40126 Bologna, Italy. FAU - Carboni, L AU - Carboni L AD - Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, via Irnerio 48, 40126 Bologna, Italy. Electronic address: lucia.carboni4@unibo.it. FAU - Carretta, D AU - Carretta D AD - Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, via Irnerio 48, 40126 Bologna, Italy. FAU - Rimondini, R AU - Rimondini R AD - Department of Medical and Clinical Science, Alma Mater Studiorum University of Bologna, via Irnerio 48, 40126 Bologna, Italy. FAU - Candeletti, S AU - Candeletti S AD - Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, via Irnerio 48, 40126 Bologna, Italy. FAU - Romualdi, P AU - Romualdi P AD - Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, via Irnerio 48, 40126 Bologna, Italy. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131023 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Apolipoprotein E4) RN - 0 (NIMA-Interacting Peptidylprolyl Isomerase) RN - 0 (Presenilin-1) RN - 0 (RNA, Messenger) RN - EC 3.5.1.- (Sirtuin 1) RN - EC 5.2.1.8 (PIN1 protein, human) RN - EC 5.2.1.8 (Peptidylprolyl Isomerase) RN - EC 5.2.1.8 (Pin1 protein, mouse) SB - IM MH - Analysis of Variance MH - Animals MH - Apolipoprotein E4/genetics/*metabolism MH - Brain/*metabolism MH - Gene Expression Regulation/*genetics MH - Humans MH - Mice MH - Mice, Transgenic MH - NIMA-Interacting Peptidylprolyl Isomerase MH - Peptidylprolyl Isomerase/genetics/*metabolism MH - Presenilin-1/genetics/*metabolism MH - RNA, Messenger/metabolism MH - Sirtuin 1/genetics/*metabolism OTO - NOTNLM OT - AD OT - APP OT - Alzheimer's disease OT - Abeta OT - BDNF OT - Brain-derived Neurotrophic Factor OT - DDCt OT - Delta-Delta Ct OT - EDTA OT - Forkhead box protein O OT - FoxO OT - LDL OT - NF-kappaB OT - NT OT - Nuclear factor kappa B OT - PS1 OT - Pin1 OT - Presenilin 1 OT - RT-qPCR OT - S.E.M. OT - Sirt1 OT - Sirtuin 1 OT - amyloid beta peptide OT - amyloid precursor protein OT - apoE OT - apoE TR mice OT - apolipoprotein E OT - apoliporpotein E OT - ethylenediaminetetraacetic acid OT - human apoE3- and apoE4-targeted replacement mice OT - low-density lipoprotein OT - neurofibrillary tangles OT - reverse transcription quantitative real-time polymerase chain reaction OT - standard error of the mean EDAT- 2013/10/29 06:00 MHDA- 2014/08/29 06:00 CRDT- 2013/10/29 06:00 PHST- 2013/09/11 00:00 [received] PHST- 2013/10/09 00:00 [accepted] PHST- 2013/10/29 06:00 [entrez] PHST- 2013/10/29 06:00 [pubmed] PHST- 2014/08/29 06:00 [medline] AID - S0306-4522(13)00861-0 [pii] AID - 10.1016/j.neuroscience.2013.10.017 [doi] PST - ppublish SO - Neuroscience. 2014 Jan 3;256:360-9. doi: 10.1016/j.neuroscience.2013.10.017. Epub 2013 Oct 23.