1
|
Anwar F, Al-Abbasi FA, Naqvi S, Sheikh RA, Alhayyani S, Asseri AH, Asar TO, Kumar V. Therapeutic Potential of Nanomedicine in Management of Alzheimer's Disease and Glioma. Int J Nanomedicine 2023; 18:2737-2756. [PMID: 37250469 PMCID: PMC10211371 DOI: 10.2147/ijn.s405454] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023] Open
Abstract
Neoplasm (Glioblastoma) and Alzheimer's disease (AD) comprise two of the most chronic psychological ailments. Glioblastoma is one of the aggressive and prevalent malignant diseases characterized by rapid growth and invasion resulting from cell migration and degradation of extracellular matrix. While the latter is characterized by extracellular plaques of amyloid and intracellular tangles of tau proteins. Both possess a high degree of resistance to treatment owing to the restricted transport of corresponding drugs to the brain protected by the blood-brain barrier (BBB). Development of optimized therapies using advanced technologies is a great need of today. One such approach is the designing of nanoparticles (NPs) to facilitate the drug delivery at the target site. The present article elaborates the advances in nanomedicines in treatment of both AD as well as Gliomas. The intention of this review is to provide an overview of different types of NPs with their physical properties emphasizing their importance in traversing the BBB and hitting the target site. Further, we discuss the therapeutic applications of these NPs along with their specific targets. Multiple overlapping factors with a common pathway in development of AD and Glioblastoma are discussed in details that will assist the readers in developing the conceptual approach to target the NP for an aging population in the given circumstances with limitations of currently designed NPs, and the challenges to meet and the future perspectives.
Collapse
Affiliation(s)
- Firoz Anwar
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Fahad A Al-Abbasi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Salma Naqvi
- Department of Biomedical Sciences, College of Medicine, Gulf Medical University, Ajman, United Arab Emirates
| | - Ryan Adnan Sheikh
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sultan Alhayyani
- Department of Chemistry, College of Sciences & Arts, Rabigh King Abdulaziz University, Jeddah, Saudi Arabia
| | - Amer H Asseri
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Turky Omar Asar
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Vikas Kumar
- Natural Product Discovery Laboratory, Department of Pharmaceutical Sciences, Shalom Institute of Health and Allied Sciences, SHUATS, Prayagraj, India
| |
Collapse
|
2
|
Simon M, Milbeo P, Liu H, André C, Wenger E, Martinez J, Amblard M, Aubert E, Legrand B, Calmès M. 12/10‐Helix in Mixed β‐Peptides Alternating Bicyclic and Acyclic β‐Amino Acids: Probing the Relationship between Bicyclic Side Chain and Helix Stability. Chemistry 2018; 24:18795-18800. [DOI: 10.1002/chem.201804404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Matthieu Simon
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247CNRS-Université Montpellier-ENSCM 34093 Montpellier cedex 5 France
| | - Pierre Milbeo
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247CNRS-Université Montpellier-ENSCM 34093 Montpellier cedex 5 France
| | - Hongtao Liu
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247CNRS-Université Montpellier-ENSCM 34093 Montpellier cedex 5 France
| | - Christophe André
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247CNRS-Université Montpellier-ENSCM 34093 Montpellier cedex 5 France
| | - Emmanuel Wenger
- CRM2UMR 7063 CNRS Université de Lorraine Boulevard des Aiguilletes 54506 Vandoeuvre-lès-Nancy Cedex France
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247CNRS-Université Montpellier-ENSCM 34093 Montpellier cedex 5 France
| | - Muriel Amblard
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247CNRS-Université Montpellier-ENSCM 34093 Montpellier cedex 5 France
| | - Emmanuel Aubert
- CRM2UMR 7063 CNRS Université de Lorraine Boulevard des Aiguilletes 54506 Vandoeuvre-lès-Nancy Cedex France
| | - Baptiste Legrand
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247CNRS-Université Montpellier-ENSCM 34093 Montpellier cedex 5 France
| | - Monique Calmès
- Institut des Biomolécules Max Mousseron (IBMM) UMR 5247CNRS-Université Montpellier-ENSCM 34093 Montpellier cedex 5 France
| |
Collapse
|
3
|
Enhancing Aromatic Foldamer Helix Dynamics to Probe Interactions with Protein Surfaces. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800855] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
4
|
Fisher BF, Hong SH, Gellman SH. Thermodynamic Scale of β-Amino Acid Residue Propensities for an α-Helix-like Conformation. J Am Chem Soc 2018; 140:9396-9399. [PMID: 30022665 PMCID: PMC6095142 DOI: 10.1021/jacs.8b05162] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A thiol-thioester exchange system has been used to measure the propensities of diverse β-amino acid residues to participate in an α-helix-like conformation. These measurements depend on formation of a parallel coiled-coil tertiary structure when two peptide segments become linked by thioester formation. One peptide segment contains a "guest" site that accommodates diverse β residues and is distal to the coiled-coil interface. We find that helix propensity is influenced by side chain placement within the β residue [β3 (side chain adjacent to nitrogen) slightly favored relative to β2 (side chain adjacent to carbonyl)]. The previously recognized helix stabilization resulting from five-membered ring incorporation is quantified. These results are significant because so few quantitative thermodynamic measurements have been reported for α/β-peptide folding.
Collapse
Affiliation(s)
| | | | - Samuel H. Gellman
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| |
Collapse
|
5
|
Misawa T, Kanda Y, Demizu Y. Rational Design and Synthesis of Post-Functionalizable Peptide Foldamers as Helical Templates. Bioconjug Chem 2017; 28:3029-3035. [DOI: 10.1021/acs.bioconjchem.7b00621] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Takashi Misawa
- Division of Organic Chemistry and ‡Division of Pharmacology, National Institute of Health Sciences, Tokyo 158-8501, Japan
| | - Yasunari Kanda
- Division of Organic Chemistry and ‡Division of Pharmacology, National Institute of Health Sciences, Tokyo 158-8501, Japan
| | - Yosuke Demizu
- Division of Organic Chemistry and ‡Division of Pharmacology, National Institute of Health Sciences, Tokyo 158-8501, Japan
| |
Collapse
|
6
|
Misawa T, Imamura M, Ozawa Y, Haishima K, Kurihara M, Kikuchi Y, Demizu Y. Development of helix-stabilized antimicrobial peptides composed of lysine and hydrophobic α,α-disubstituted α-amino acid residues. Bioorg Med Chem Lett 2017; 27:3950-3953. [PMID: 28789896 DOI: 10.1016/j.bmcl.2017.07.074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 07/25/2017] [Accepted: 07/28/2017] [Indexed: 01/14/2023]
Abstract
Lysine-based amphipathic nonapeptides, including homochiral peptides [Ac-(l-Lys-l-Lys-Xaa)3-NH2 (Xaa=Gly, Ala, Aib, Ac5c, or Ac6c) and Ac-(d-Lys-d-Lys-Aib)3-NH2], a heterochiral peptide [Ac-(l-Lys-d-Lys-Aib)3-NH2], and a racemic mixture of diastereomeric peptides [Ac-(rac-Lys-rac-Lys-Aib)3-NH2] were designed and synthesized to investigate the relationship between their preferred secondary structures and their antimicrobial activity. Peptide 5, [Ac-(l-Lys-l-Lys-Ac6c)3-NH2] formed a stable α-helical structure and exhibited strong activity against Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa).
Collapse
Affiliation(s)
- Takashi Misawa
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya, Tokyo 158-8501, Japan
| | - Mitsuyoshi Imamura
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya, Tokyo 158-8501, Japan
| | - Yuto Ozawa
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya, Tokyo 158-8501, Japan
| | - Kazuchika Haishima
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya, Tokyo 158-8501, Japan
| | - Masaaki Kurihara
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya, Tokyo 158-8501, Japan
| | - Yutaka Kikuchi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya, Tokyo 158-8501, Japan.
| | - Yosuke Demizu
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya, Tokyo 158-8501, Japan.
| |
Collapse
|
7
|
Probing the Structure and Function Relationships of Presenilin by Substituted-Cysteine Accessibility Method. Methods Enzymol 2017; 584:185-205. [DOI: 10.1016/bs.mie.2016.10.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
|
8
|
Dormán G, Nakamura H, Pulsipher A, Prestwich GD. The Life of Pi Star: Exploring the Exciting and Forbidden Worlds of the Benzophenone Photophore. Chem Rev 2016; 116:15284-15398. [PMID: 27983805 DOI: 10.1021/acs.chemrev.6b00342] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The widespread applications of benzophenone (BP) photochemistry in biological chemistry, bioorganic chemistry, and material science have been prominent in both academic and industrial research. BP photophores have unique photochemical properties: upon n-π* excitation at 365 nm, a biradicaloid triplet state is formed reversibly, which can abstract a hydrogen atom from accessible C-H bonds; the radicals subsequently recombine, creating a stable covalent C-C bond. This light-directed covalent attachment process is exploited in many different ways: (i) binding/contact site mapping of ligand (or protein)-protein interactions; (ii) identification of molecular targets and interactome mapping; (iii) proteome profiling; (iv) bioconjugation and site-directed modification of biopolymers; (v) surface grafting and immobilization. BP photochemistry also has many practical advantages, including low reactivity toward water, stability in ambient light, and the convenient excitation at 365 nm. In addition, several BP-containing building blocks and reagents are commercially available. In this review, we explore the "forbidden" (transitions) and excitation-activated world of photoinduced covalent attachment of BP photophores by touring a colorful palette of recent examples. In this exploration, we will see the pros and cons of using BP photophores, and we hope that both novice and expert photolabelers will enjoy and be inspired by the breadth and depth of possibilities.
Collapse
Affiliation(s)
- György Dormán
- Targetex llc , Dunakeszi H-2120, Hungary.,Faculty of Pharmacy, University of Szeged , Szeged H-6720, Hungary
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , Yokohama 226-8503, Japan
| | - Abigail Pulsipher
- GlycoMira Therapeutics, Inc. , Salt Lake City, Utah 84108, United States.,Division of Head and Neck Surgery, Rhinology - Sinus and Skull Base Surgery, Department of Surgery, University of Utah School of Medicine , Salt Lake City, Utah 84108, United States
| | - Glenn D Prestwich
- Division of Head and Neck Surgery, Rhinology - Sinus and Skull Base Surgery, Department of Surgery, University of Utah School of Medicine , Salt Lake City, Utah 84108, United States
| |
Collapse
|
9
|
Mándity IM, Fülöp F. An overview of peptide and peptoid foldamers in medicinal chemistry. Expert Opin Drug Discov 2015; 10:1163-77. [PMID: 26289578 DOI: 10.1517/17460441.2015.1076790] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Foldamers are artificial self-organizing systems with various critical properties: i) a stable and designable secondary structure; ii) a larger molecular surface as compared with ordinary organic drug molecules; iii) appropriate control of the orientation of the side-chain functional groups; iv) resistance against proteolytic degradation, which leads to potentially increased oral bioavailability and a longer serum half-life relative to ordinary α-peptides; and v) the lower conformational freedom may result in increased receptor binding in comparison with the natural analogs. AREAS COVERED This article covers the general properties and types of foldamers. This includes highlighted examples of medicinal chemical applications, including antibacterial and cargo molecules, anti-Alzheimer compounds and protein-protein interaction modifiers. EXPERT OPINION Various new foldamers have been created with a range of structures and biological applications. Membrane-acting antibacterial foldamers have been introduced. A general property of these structures is their amphiphilic nature. The amphiphilicity can be stationary or induced by the membrane binding. Cell-penetrating foldamers have been described which serve as cargo molecules, and foldamers have been used as autophagy inducers. Anti-Alzheimer compounds too have been created and the greatest breakthrough was attained via the modification of protein-protein interactions. This can serve as the chemical and pharmaceutical basis for the relevance of foldamers in the future.
Collapse
Affiliation(s)
| | - Ferenc Fülöp
- a University of Szeged Institute of Pharmaceutical Chemistry , H-6720 Szeged, Eötvös u. 6, Hungary +36 62 545 768 ; +36 62 545 564 ; +36 62 545 705 ; ;
| |
Collapse
|
10
|
Yamashita H, Demizu Y, Misawa T, Shoda T, Kurihara M. Synthesis of a bis-cationic α,α-disubstituted amino acid (9-amino-bispidine-9-carboxylic acid) and its effects on the conformational properties of peptides. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.076] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
11
|
Derrick JS, Lim MH. Tools of the Trade: Investigations into Design Strategies of Small Molecules to Target Components in Alzheimer's Disease. Chembiochem 2015; 16:887-98. [DOI: 10.1002/cbic.201402718] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Indexed: 12/21/2022]
|
12
|
Structural development of stapled short helical peptides as vitamin D receptor (VDR)–coactivator interaction inhibitors. Bioorg Med Chem 2015; 23:1055-61. [DOI: 10.1016/j.bmc.2015.01.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 01/05/2015] [Accepted: 01/05/2015] [Indexed: 11/23/2022]
|
13
|
Demizu Y, Yamashita H, Misawa T, Doi M, Tanaka M, Kurihara M. Effects of D-Leu Residues on the Helical Secondary Structures of L-Leu-Based Nonapeptides. Chem Pharm Bull (Tokyo) 2015; 63:218-24. [DOI: 10.1248/cpb.c14-00760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yosuke Demizu
- Division of Organic Chemistry, National Institute of Health Sciences
| | - Hiroko Yamashita
- Division of Organic Chemistry, National Institute of Health Sciences
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
| | - Takashi Misawa
- Division of Organic Chemistry, National Institute of Health Sciences
| | | | | | - Masaaki Kurihara
- Division of Organic Chemistry, National Institute of Health Sciences
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology
| |
Collapse
|
14
|
Schubert F, Pagel K, Rossi M, Warnke S, Salwiczek M, Koksch B, von Helden G, Blum V, Baldauf C, Scheffler M. Native like helices in a specially designed β peptide in the gas phase. Phys Chem Chem Phys 2015; 17:5376-85. [DOI: 10.1039/c4cp05216a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
First principles simulations and gas phase spectroscopy suggest equilibrium of helices for an oligomer of open chain β amino acids.
Collapse
Affiliation(s)
| | - Kevin Pagel
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- D-14195 Berlin
- Germany
- Institut für Chemie und Biochemie
- Freie Universität Berlin
| | - Mariana Rossi
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- D-14195 Berlin
- Germany
- Physical and Theoretical Chemistry Laboratory
- University of Oxford
| | - Stephan Warnke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- D-14195 Berlin
- Germany
| | - Mario Salwiczek
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
| | - Beate Koksch
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
| | - Gert von Helden
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- D-14195 Berlin
- Germany
| | - Volker Blum
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- D-14195 Berlin
- Germany
- Mechanical Engineering and Material Science Department and Center for Materials Genomics
- Duke University
| | - Carsten Baldauf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- D-14195 Berlin
- Germany
| | | |
Collapse
|
15
|
Mándity IM, Olasz B, Ötvös SB, Fülöp F. Continuous-flow solid-phase peptide synthesis: a revolutionary reduction of the amino acid excess. CHEMSUSCHEM 2014; 7:3172-3176. [PMID: 25196512 DOI: 10.1002/cssc.201402436] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Indexed: 06/03/2023]
Abstract
A highly efficient continuous-flow technique for the synthesis of peptides was developed. The method allows the application of only 1.5 equivalents of amino acids during coupling, while yielding virtually quantitative conversions. A mesoscale reactor was constructed which permits the use of high temperature and pressure during the synthesis. A complete reaction parameter optimization was carried out. Under the optimum conditions, the couplings of all 20 proteinogenic amino acids were achieved with 1.5 amino acid equivalents with quantitative conversions. As a demonstration of the efficiency of the methodology, difficult sequences and β-peptide foldamers with alicyclic side-chains were synthetized in excellent yields and with lower costs thanks to the lower amounts of amino acid and solvent used. By this the synthesis is highly economic and sustainable. Importantly, exotic and expensive artificial amino acids were incorporated into peptidic sequences by the utilization of a reasonable number of amino acid equivalents. The synthesis can be performed in quantities of microgram to gram in an automated way.
Collapse
Affiliation(s)
- István M Mándity
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720 Szeged (Hungary)
| | | | | | | |
Collapse
|
16
|
Cabrele C, Martinek TA, Reiser O, Berlicki Ł. Peptides Containing β-Amino Acid Patterns: Challenges and Successes in Medicinal Chemistry. J Med Chem 2014; 57:9718-39. [DOI: 10.1021/jm5010896] [Citation(s) in RCA: 182] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chiara Cabrele
- Department
of Molecular Biology, University of Salzburg, Billrothstrasse 11, 5020 Salzburg, Austria
| | - Tamás A. Martinek
- SZTE-MTA
Lendulet Foldamer Research Group, Institute of Pharmaceutical Analysis, University of Szeged, Somogyi u. 6., H-6720 Szeged, Hungary
| | - Oliver Reiser
- Institute
of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Łukasz Berlicki
- Department
of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| |
Collapse
|
17
|
Abstract
Presenilin is a membrane-embedded intramembrane-cleaving protease with a conserved catalytic G×GD motif. It is the catalytic subunit of γ-secretase, which plays critical roles in developmental biology and the molecular etiology of Alzheimer disease, together with three membrane protein cofactors, nicastrin, Aph-1 and Pen-2. Biochemical and enzymatic analyses have revealed that γ-secretase executes two types of proteolytic activities on a single substrate; an endopeptidase-like cleavage followed by carboxypeptidase-like processive cleavage. Utilizing small molecule inhibitors/modulators together with the substituted cysteine accessibility method, we identified certain residues and regions of presenilin that contribute to the formation of a catalytic pore structure within the lipid bilayer required for its intramembrane-cleaving activity. Recently, determination of the crystal structure of the archaeal presenilin homologue has confirmed the intramembranous location of the two conserved and essential aspartates. In this review, I will introduce the recent progresses in the understanding of the molecular mechanisms of action of this atypical protease.
Collapse
Affiliation(s)
- Taisuke Tomita
- Department of Neuropathology and Neuroscience, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| |
Collapse
|
18
|
Mándity IM, Monsignori A, Fülöp L, Forró E, Fülöp F. Exploiting aromatic interactions for β-peptide foldamer helix stabilization: a significant design element. Chemistry 2014; 20:4591-7. [PMID: 24664416 DOI: 10.1002/chem.201304448] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Indexed: 11/09/2022]
Abstract
Tetrameric H10/12 helix stabilization was achieved by the application of aromatic side-chains in β-peptide oligomers by intramolecular backbone-side chain CH-π interactions. Because of the enlarged hydrophobic surface of the oligomers, a further aim was the investigation of the self-assembly in a polar medium for the β-peptide H10/12 helices. NMR, ECD, and molecular modeling results indicated that the oligomers formed by cis-[1S,2S]- or cis-[1R,2R]-1-amino-1,2,3,4-tetrahydronaphthalene-2-carboxylic acid (ATENAC) and cis-[1R,2S]- or cis-[1S,2R]-2-aminocyclohex-3-enecarboxylic acid (ACHEC) residues promote stable H10/12 helix formation with an alternating backbone configuration even at the tetrameric chain length. These results support the view that aromatic side-chains can be applied for helical structure stabilization. Importantly, this is the first observation of a stable H10/12 helix with tetrameric chain-length. The hydrophobically driven self-assembly was achieved for the helix-forming oligomers, seen as vesicles in transmission electron microscopy images. The self-association phenomenon, which supports the helical secondary structure of these oligomers, depends on the hydrophobic surface area, because a higher number of aromatic side-chains yielded larger vesicles. These results serve as an essential element for the design of helices relating to the H10/12 helix. Moreover, they open up a novel area for bioactive foldamer construction, while the hydrophobic area gained through the aromatic side-chains may yield important receptor-ligand interaction surfaces, which can provide amplified binding strength.
Collapse
Affiliation(s)
- István M Mándity
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, 6720 Szeged (Hungary), Fax: (+36) 62-545705
| | | | | | | | | |
Collapse
|
19
|
Demizu Y, Misawa T, Kurihara M. Development of Stabilized Short Helical Peptides and Their Functionalization. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.1336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yosuke Demizu
- Division of Organic Chemistry, National Institute of Health Sciences
| | | | - Masaaki Kurihara
- Division of Organic Chemistry, National Institute of Health Sciences
| |
Collapse
|
20
|
Song Y, Hustedt EJ, Brandon S, Sanders CR. Competition between homodimerization and cholesterol binding to the C99 domain of the amyloid precursor protein. Biochemistry 2013; 52:5051-64. [PMID: 23865807 DOI: 10.1021/bi400735x] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The 99-residue transmembrane C-terminal domain (C99, also known as β-CTF) of the amyloid precursor protein (APP) is the product of the β-secretase cleavage of the full-length APP and is the substrate for γ-secretase cleavage. The latter cleavage releases the amyloid-β polypeptides that are closely associated with Alzheimer's disease. C99 is thought to form homodimers; however, the free energy in favor of dimerization has not previously been quantitated. It was also recently documented that cholesterol forms a 1:1 complex with monomeric C99 in bicelles. Here, the affinities for both homodimerization and cholesterol binding to C99 were measured in bilayered lipid vesicles using both electron paramagnetic resonance (EPR) and Förster resonance energy transfer (FRET) methods. Homodimerization and cholesterol binding were seen to be competitive processes that center on the transmembrane G₇₀₀XXXG₇₀₄XXXG₇₀₈ glycine-zipper motif and adjacent Gly709. On one hand, the observed Kd for cholesterol binding (Kd = 2.7 ± 0.3 mol %) is on the low end of the physiological cholesterol concentration range in mammalian cell membranes. On the other hand, the observed K(d) for homodimerization (K(d) = 0.47 ± 0.15 mol %) likely exceeds the physiological concentration range for C99. These results suggest that the 1:1 cholesterol/C99 complex will be more highly populated than C99 homodimers under most physiological conditions. These observations are of relevance for understanding the γ-secretase cleavage of C99.
Collapse
Affiliation(s)
- Yuanli Song
- Department of Biochemistry and Center for Structural Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | | | | | | |
Collapse
|
21
|
Tomita T, Iwatsubo T. Structural biology of presenilins and signal peptide peptidases. J Biol Chem 2013; 288:14673-80. [PMID: 23585568 DOI: 10.1074/jbc.r113.463281] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Presenilin and signal peptide peptidase are multispanning intramembrane-cleaving proteases with a conserved catalytic GxGD motif. Presenilin comprises the catalytic subunit of γ-secretase, a protease responsible for the generation of amyloid-β peptides causative of Alzheimer disease. Signal peptide peptidase proteins are implicated in the regulation of the immune system. Both protease family proteins have been recognized as druggable targets for several human diseases, but their detailed structure still remains unknown. Recently, the x-ray structures of some archaeal GxGD proteases have been determined. We review the recent progress in biochemical and biophysical probing of the structure of these atypical proteases.
Collapse
Affiliation(s)
- Taisuke Tomita
- Department of Neuropathology and Neuroscience, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan.
| | | |
Collapse
|