PMID- 37216506 OWN - NLM STAT- MEDLINE DCOM- 20230530 LR - 20230605 IS - 1091-6490 (Electronic) IS - 0027-8424 (Print) IS - 0027-8424 (Linking) VI - 120 IP - 22 DP - 2023 May 30 TI - ARL6IP1 mediates small-molecule-induced alleviation of Alzheimer pathology through FXR1-dependent BACE1 translation initiation. PG - e2220148120 LID - 10.1073/pnas.2220148120 [doi] LID - e2220148120 AB - Exploring the potential lead compounds for Alzheimer's disease (AD) remains one of the challenging tasks. Here, we report that the plant extract conophylline (CNP) impeded amyloidogenesis by preferentially inhibiting BACE1 translation via the 5' untranslated region (5'UTR) and rescued cognitive decline in an animal model of APP/PS1 mice. ADP-ribosylation factor-like protein 6-interacting protein 1 (ARL6IP1) was then found to mediate the effect of CNP on BACE1 translation, amyloidogenesis, glial activation, and cognitive function. Through analysis of the 5'UTR-targetd RNA-binding proteins by RNA pulldown combined with LC-MS/MS, we found that FMR1 autosomal homolog 1 (FXR1) interacted with ARL6IP1 and mediated CNP-induced reduction of BACE1 by regulating the 5'UTR activity. Without altering the protein levels of ARL6IP1 and FXR1, CNP treatment promoted ARL6IP1 interaction with FXR1 and inhibited FXR1 binding to the 5'UTR both in vitro and in vivo. Collectively, CNP exhibited a therapeutic potential for AD via ARL6IP1. Through pharmacological manipulation, we uncovered a dynamic interaction between FXR1 and the 5'UTR in translational control of BACE1, adding to the understanding of the pathophysiology of AD. FAU - Zhou, Gui-Feng AU - Zhou GF AUID- ORCID: 0000-0002-5427-3632 AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Tang, Jing AU - Tang J AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Ma, Yuan-Lin AU - Ma YL AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Fu, Xian AU - Fu X AD - Center for Novel Target & Therapeutic Intervention, Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China. FAU - Liu, Jun-Yan AU - Liu JY AUID- ORCID: 0000-0002-3018-0335 AD - Center for Novel Target & Therapeutic Intervention, Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China. FAU - Yang, Ren-Zhi AU - Yang RZ AUID- ORCID: 0009-0003-3113-882X AD - Institute for Brain Science and Disease, Chongqing Medical University, Chongqing 400016, China. FAU - Zhang, Hong-Sheng AU - Zhang HS AD - Institute for Brain Science and Disease, Chongqing Medical University, Chongqing 400016, China. FAU - Cai, Xiang-Hai AU - Cai XH AD - State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China. FAU - Wang, Jing-Wen AU - Wang JW AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Xie, Xiao-Yong AU - Xie XY AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Song, Li AU - Song L AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Luo, Biao AU - Luo B AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Chen, Jian AU - Chen J AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Chen, Long AU - Chen L AUID- ORCID: 0009-0008-2655-5617 AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Deng, Xiao-Juan AU - Deng XJ AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. FAU - Chen, Guo-Jun AU - Chen GJ AD - Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Major Neurological and Mental Disorders, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230522 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (5' Untranslated Regions) RN - EC 3.4.- (Amyloid Precursor Protein Secretases) RN - EC 3.4.23.- (Aspartic Acid Endopeptidases) RN - EC 3.4.23.46 (Bace1 protein, mouse) RN - 0 (Fmr1 protein, mouse) RN - 139135-51-6 (Fragile X Mental Retardation Protein) RN - 0 (Arl6ip1 protein, mouse) SB - IM MH - Animals MH - Mice MH - 5' Untranslated Regions MH - *Alzheimer Disease/drug therapy/genetics/metabolism MH - Amyloid Precursor Protein Secretases/genetics/metabolism MH - Aspartic Acid Endopeptidases/genetics/metabolism MH - Chromatography, Liquid MH - Fragile X Mental Retardation Protein/genetics MH - Protein Biosynthesis MH - Tandem Mass Spectrometry PMC - PMC10235968 OTO - NOTNLM OT - 5'UTR OT - ARL6IP1 OT - BACE1 translation OT - FXR1 OT - conophylline COIS- Conophylline has been patented by China National Intellectual Property Administration. EDAT- 2023/05/22 19:11 MHDA- 2023/05/24 06:42 PMCR- 2023/05/22 CRDT- 2023/05/22 15:13 PHST- 2023/05/24 06:42 [medline] PHST- 2023/05/22 19:11 [pubmed] PHST- 2023/05/22 15:13 [entrez] PHST- 2023/05/22 00:00 [pmc-release] AID - 202220148 [pii] AID - 10.1073/pnas.2220148120 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2023 May 30;120(22):e2220148120. doi: 10.1073/pnas.2220148120. Epub 2023 May 22.