Article (Scientific journals)
Modulation of Cytosolic Phospholipase A2 as a Potential Therapeutic Strategy for Alzheimer's Disease.
André, Séverine; Verteneuil, Sébastien; Ris, Laurence et al.
2023In Journal of Alzheimer's Disease Reports, 7 (1), p. 1395 - 1426
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Keywords :
Alzheimer’s disease; amyloid plaques; amyloid-β protein precursor; cytosolic phospholipase A2; peptides; phage display; tau protein; Neuroscience (all); General Neuroscience
Abstract :
[en] BACKGROUND: Alzheimer's disease (AD) is a neurodegenerative disorder lacking any curative treatment up to now. Indeed, actual medication given to the patients alleviates only symptoms. The cytosolic phospholipase A2 (cPLA2-IVA) appears as a pivotal player situated at the center of pathological pathways leading to AD and its inhibition could be a promising therapeutic approach. OBJECTIVE: A cPLA2-IVA inhibiting peptide was identified in the present work, aiming to develop an original therapeutic strategy. METHODS: We targeted the cPLA2-IVA using the phage display technology. The hit peptide PLP25 was first validated in vitro (arachidonic acid dosage [AA], cPLA2-IVA cellular translocation) before being tested in vivo. We evaluated spatial memory using the Barnes maze, amyloid deposits by MRI and immunohistochemistry (IHC), and other important biomarkers such as the cPLA2-IVA itself, the NMDA receptor, AβPP and tau by IHC after i.v. injection in APP/PS1 mice. RESULTS: Showing a high affinity for the C2 domain of this enzyme, the peptide PLP25 exhibited an inhibitory effect on cPLA2-IVA activity by blocking its binding to its substrate, resulting in a decreased release of AA. Coupled to a vector peptide (LRPep2) in order to optimize brain access, we showed an improvement of cognitive abilities of APP/PS1 mice, which also exhibited a decreased number of amyloid plaques, a restored expression of cPLA2-IVA, and a favorable effect on NMDA receptor expression and tau protein phosphorylation. CONCLUSION: cPLA2-IVA inhibition through PLP25 peptide could be a promising therapeutic strategy for AD.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
André, Séverine;  General, Organic and Biomedical Chemistry Unit, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium
Verteneuil, Sébastien ;  Université de Liège - ULiège > GIGA ; General, Organic and Biomedical Chemistry Unit, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium
Ris, Laurence;  Department of Neurosciences, University of Mons, Research Institute for Health Science and Technologies, Mons, Belgium
Kahvecioglu, Zehra-Cagla;  General, Organic and Biomedical Chemistry Unit, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium
Nonclercq, Denis;  Department of Histology, University of Mons, Mons, Belgium
De Winter, Julien;  Organic Synthesis and Mass Spectrometry Laboratory (SMOs), University of Mons-UMONS, Mons, Belgium
Vander Elst, Luce;  General, Organic and Biomedical Chemistry Unit, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium
Laurent, Sophie;  General, Organic and Biomedical Chemistry Unit, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium ; Center for Microscopy and Molecular Imaging, Gosselies, Belgium
Muller, Robert N;  General, Organic and Biomedical Chemistry Unit, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium ; Center for Microscopy and Molecular Imaging, Gosselies, Belgium
Burtea, Carmen;  General, Organic and Biomedical Chemistry Unit, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium
Language :
English
Title :
Modulation of Cytosolic Phospholipase A2 as a Potential Therapeutic Strategy for Alzheimer's Disease.
Publication date :
29 December 2023
Journal title :
Journal of Alzheimer's Disease Reports
eISSN :
2542-4823
Publisher :
IOS Press BV, Netherlands
Volume :
7
Issue :
1
Pages :
1395 - 1426
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This work was supported by the ARC (Actions de Recherche Concertée) of the French Community of Belgium, the FRMH (Fond pour la Recherche Médicale en Hainaut) and the Rotary Club.
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since 05 February 2024

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