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Laxio Arenas J, Lesma J, Ha-Duong T, Ranjan Sahoo B, Ramamoorthy A, Tonali N, Soulier JL, Halgand F, Giraud F, Crousse B, Kaffy J, Ongeri S. Composition and Conformation of Hetero- versus Homo-Fluorinated Triazolamers Influence their Activity on Islet Amyloid Polypeptide Aggregation. Chemistry 2024; 30:e202303887. [PMID: 38478740 DOI: 10.1002/chem.202303887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Indexed: 04/11/2024]
Abstract
Novel fluorinated foldamers based on aminomethyl-1,4-triazolyl-difluoroacetic acid (1,4-Tz-CF2) units were synthesized and their conformational behaviour was studied by NMR and molecular dynamics. Their activity on the aggregation of the human islet amyloid polypeptide (hIAPP) amyloid protein was evaluated by fluorescence spectroscopy and mass spectrometry. The fluorine labelling of these foldamers allowed the analysis of their interaction with the target protein. We demonstrated that the preferred extended conformation of homotriazolamers of 1,4-Tz-CF2 unit increases the aggregation of hIAPP, while the hairpin-like conformation of more flexible heterotriazolamers containing two 1,4-Tz-CF2 units mixed with natural amino acids from the hIAPP sequence reduces it, and more efficiently than the parent natural peptide. The longer heterotriazolamers having three 1,4-Tz-CF2 units adopting more folded hairpin-like and ladder-like structures similar to short multi-stranded β-sheets have no effect. This work demonstrates that a good balance between the structuring and flexibility of these foldamers is necessary to allow efficient interaction with the target protein.
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Affiliation(s)
- José Laxio Arenas
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Jacopo Lesma
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Tap Ha-Duong
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Bikash Ranjan Sahoo
- Biophysics, Department of Chemistry, Biomedical Engineering, Michigan Neuroscience Institute, Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Ayyalusamy Ramamoorthy
- Biophysics, Department of Chemistry, Biomedical Engineering, Michigan Neuroscience Institute, Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Nicolo Tonali
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Jean-Louis Soulier
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Frédéric Halgand
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, 91405, Orsay, France
| | - François Giraud
- Equipe Biologie et Chimie Structurales, Dept Chimie et Biologie Structurales et Analytiques, ICSN, CNRS, Université Paris Saclay, 1 avenue de la terrasse, 91190, Gif sur Yvette, France
| | - Benoît Crousse
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Julia Kaffy
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
| | - Sandrine Ongeri
- Université Paris-Saclay, CNRS, BioCIS, Bat. Henri Moissan, 17 av. des Sciences, 91400, Orsay, France
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Lin R, Tang G, Gao Z, Lei J, Ma B, Mo Y. Molecular Insights into the Self-Assembly of a Full-Length hIAPP Trimer: β-Protofibril Formed by β-Hairpin Lateral or Longitudinal Association. J Phys Chem B 2023. [PMID: 37262327 DOI: 10.1021/acs.jpcb.3c02633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The fibrillar protein deposits of the human islet amyloid polypeptide (hIAPP) in the pancreatic islet of Langerhans are pathological hallmark of type II diabetes. Extensive experimental studies have revealed that the oligomeric formations of the hIAPP are more toxic than the mature fibrils. Exploring the oligomeric conformations in the early aggregation state is valuable for effective therapeutics. In this work, using the all-atom explicit-solvent replica exchange molecular dynamic (REMD) simulations, we investigated the structural features and the assembly mechanisms of the full-length hIAPP trimer in solution. The hIAPP trimer adopted more β-sheets than a-helix conformations, and three types of ordered conformations including open β-barrel, single-layer, and double-layer U-shaped β-sheet structures with five β-strands were captured in our simulations. A representative single-layer β-sheet conformation with a CCS value of 1400 Å2 in our simulations matches exactly the experimentally ESI-IMS-MS-derived hIAPP trimer sample. These five β-strand conformations formed via the β-hairpin lateral and longitudinal association, respectively, showing two β-protofibril formation models. To the best of our knowledge, it is the first time to reveal two routes to β-sheet formation in the hIAPP trimers on the atomic level. The contact probabilities between pairs of the β-stranded residue show that the hydrophobic interactions between the residues F15 ∼ V17 and A25 ∼ L27 are responsible for the inter- and intra-peptide β-hairpin formations. All of these results indicate that the β-sheet formation is the first step in the conformational changes toward pathological aggregation and provides evidence of the β-sheet assembly mechanism into hIAPP aggregation.
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Affiliation(s)
- Rongmei Lin
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, People's Republic of China
| | - Guoning Tang
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, People's Republic of China
| | - Zhonggui Gao
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, People's Republic of China
| | - Jiangtao Lei
- Institute of Space Science and Technology, Nanchang University, Nanchang, Jiangxi 330031, People's Republic of China
| | - Buyong Ma
- Engineering Research Center of Cell & Therapeutic Antibody, School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China
| | - Yuxiang Mo
- College of Physical Science and Technology, Guangxi Normal University, Guilin, Guangxi 541004, People's Republic of China
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Linking hIAPP misfolding and aggregation with type 2 diabetes mellitus: a structural perspective. Biosci Rep 2022; 42:231205. [PMID: 35475576 PMCID: PMC9118370 DOI: 10.1042/bsr20211297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/12/2022] [Accepted: 04/26/2022] [Indexed: 11/17/2022] Open
Abstract
There are over 40 identified human disorders that involve certain proteins folding incorrectly, accumulating in the body causing damage to cells and organs and causing disease. Type 2 Diabetes Mellitus (T2DM) is one of these protein misfolding disorders (PMDs) and involves human islet amyloid polypeptide (hIAPP) misfolding and accumulating in parts of the body, primarily in the pancreas, causing damage to islet cells and affecting glucose regulation. In this review, we have summarised our current understanding of what causes hIAPP to misfold, what conformations are found in different parts of the body with a particular focus on what is known about the structure of hIAPP and how this links to T2DM. Understanding the molecular basis behind these misfolding events is essential for understanding the role of hIAPP to develop better therapeutics since type 2 diabetes currently affects over 4.9 million people in the United Kingdom alone and is predicted to increase as our population ages.
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Lesma J, Bizet F, Berardet C, Tonali N, Pellegrino S, Taverna M, Khemtemourian L, Soulier JL, van Heijenoort C, Halgand F, Ha-Duong T, Kaffy J, Ongeri S. β-Hairpin Peptide Mimics Decrease Human Islet Amyloid Polypeptide (hIAPP) Aggregation. Front Cell Dev Biol 2021; 9:729001. [PMID: 34604227 PMCID: PMC8481668 DOI: 10.3389/fcell.2021.729001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/23/2021] [Indexed: 11/17/2022] Open
Abstract
Amyloid diseases are degenerative pathologies, highly prevalent today because they are closely related to aging, that have in common the erroneous folding of intrinsically disordered proteins (IDPs) which aggregate and lead to cell death. Type 2 Diabetes involves a peptide called human islet amyloid polypeptide (hIAPP), which undergoes a conformational change, triggering the aggregation process leading to amyloid aggregates and fibers rich in β-sheets mainly found in the pancreas of all diabetic patients. Inhibiting the aggregation of amyloid proteins has emerged as a relevant therapeutic approach and we have recently developed the design of acyclic flexible hairpins based on peptidic recognition sequences of the amyloid β peptide (Aβ1–42) as a successful strategy to inhibit its aggregation involved in Alzheimer’s disease. The present work reports the extension of our strategy to hIAPP aggregation inhibitors. The design, synthesis, conformational analyses, and biophysical evaluations of dynamic β-hairpin like structures built on a piperidine-pyrrolidine β-turn inducer are described. By linking to this β-turn inducer three different arms (i) pentapeptide, (ii) tripeptide, and (iii) α/aza/aza/pseudotripeptide, we demonstrate that the careful selection of the peptide-based arms from the sequence of hIAPP allowed to selectively modulate its aggregation, while the peptide character can be decreased. Biophysical assays combining, Thioflavin-T fluorescence, transmission electronic microscopy, capillary electrophoresis, and mass spectrometry showed that the designed compounds inhibit both the oligomerization and the fibrillization of hIAPP. They are also capable to decrease the aggregation process in the presence of membrane models and to strongly delay the membrane-leakage induced by hIAPP. More generally, this work provides the proof of concept that our rational design is a versatile and relevant strategy for developing efficient and selective inhibitors of aggregation of amyloidogenic proteins.
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Affiliation(s)
- Jacopo Lesma
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Faustine Bizet
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Corentin Berardet
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France.,Institute Galien Paris-Saclay, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Nicolo Tonali
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Sara Pellegrino
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini," Università degli Studi di Milano, Milan, Italy
| | - Myriam Taverna
- Institute Galien Paris-Saclay, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Lucie Khemtemourian
- Institute of Chemistry and Biology of Membranes and Nanoobjects, Institut Polytechnique Bordeaux, CNRS UMR 5248, Université de Bordeaux, Pessac, France
| | | | - Carine van Heijenoort
- ICSN, Equipe Biologie et Chimie Structurales, Département de Chimie et Biologie Structurales et Analytiques, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Frédéric Halgand
- Institut de Chimie Physique, Equipe Chimie Analytique Physicochimie Réactivité des Ions, CNRS, Université Paris-Saclay, Orsay, France
| | - Tâp Ha-Duong
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Julia Kaffy
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Sandrine Ongeri
- BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
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Kaffy J, Berardet C, Mathieu L, Legrand B, Taverna M, Halgand F, Van Der Rest G, Maillard LT, Ongeri S. Helical γ‐Peptide Foldamers as Dual Inhibitors of Amyloid‐β Peptide and Islet Amyloid Polypeptide Oligomerization and Fibrillization. Chemistry 2020; 26:14612-14622. [DOI: 10.1002/chem.202001716] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/28/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Julia Kaffy
- Université Paris-Saclay CNRS BioCIS 92290 Châtenay-Malabry France
| | - Corentin Berardet
- Université Paris-Saclay CNRS BioCIS 92290 Châtenay-Malabry France
- Université Paris Saclay CNRS Institut Galien de Paris Sud 92290 Châtenay-Malabry France
| | - Loïc Mathieu
- Institut des Biomolécules Max Mousseron UMR 5247 CNRS Université de Montpellier-CNRS-ENSCM, UMR 5247 UFR des Sciences Pharmaceutiques et Biologiques 15 Avenue Charles Flahault 34093 Montpellier Cedex 5 France
| | - Baptiste Legrand
- Institut des Biomolécules Max Mousseron UMR 5247 CNRS Université de Montpellier-CNRS-ENSCM, UMR 5247 UFR des Sciences Pharmaceutiques et Biologiques 15 Avenue Charles Flahault 34093 Montpellier Cedex 5 France
| | - Myriam Taverna
- Université Paris Saclay CNRS Institut Galien de Paris Sud 92290 Châtenay-Malabry France
- Institut Universitaire de France 1, rue Descartes 75231 Paris Cedex 05 France
| | - Frédéric Halgand
- Université Paris-Saclay CNRS Institut de Chimie Physique 91405 Orsay France
| | | | - Ludovic T. Maillard
- Institut des Biomolécules Max Mousseron UMR 5247 CNRS Université de Montpellier-CNRS-ENSCM, UMR 5247 UFR des Sciences Pharmaceutiques et Biologiques 15 Avenue Charles Flahault 34093 Montpellier Cedex 5 France
| | - Sandrine Ongeri
- Université Paris-Saclay CNRS BioCIS 92290 Châtenay-Malabry France
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