1
|
Moraca F, Vespoli I, Mastroianni D, Piscopo V, Gaglione R, Arciello A, De Nisco M, Pacifico S, Catalanotti B, Pedatella S. Synthesis, biological evaluation and metadynamics simulations of novel N-methyl β-sheet breaker peptides as inhibitors of Alzheimer's β-amyloid fibrillogenesis. RSC Med Chem 2024; 15:2286-2299. [PMID: 39026638 PMCID: PMC11253850 DOI: 10.1039/d4md00057a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/07/2024] [Indexed: 07/20/2024] Open
Abstract
Several scientific evidences report that a central role in the pathogenesis of Alzheimer's disease is played by the deposition of insoluble aggregates of β-amyloid proteins in the brain. Because Aβ is self-assembling, one possible design strategy is to inhibit the aggregation of Aβ peptides using short peptide fragments homologous to the full-length wild-type Aβ protein. In the past years, several studies have reported on the synthesis of some short synthetic peptides called β-sheet breaker peptides (BSBPs). Herein, we present the synthesis of novel (cell-permeable) N-methyl BSBPs, designed based on literature information on the structural key features of BSBPs. Three-dimensional GRID-based pharmacophore peptide screening combined with PT-WTE metadynamics was performed to support the results of the design and microwave-assisted synthesis of peptides 2 and 3 prepared and analyzed for their fibrillogenesis inhibition activity and cytotoxicity. An HR-MS-based cell metabolomic approach highlighted their cell permeability properties.
Collapse
Affiliation(s)
- Federica Moraca
- Department of Pharmacy, University of Napoli Federico II Via Domenico Montesano 49 I-80131 Napoli Italy
- Net4Science Academic Spin-Off, University "Magna Græcia" of Catanzaro Viale Europa 88100 Catanzaro Italy
| | - Ilaria Vespoli
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo náměstí 542/2 CZ-16610 Prague Czech Republic
| | - Domenico Mastroianni
- Department of Chemical Sciences, University of Napoli Federico II Via Cintia 4 I-80126 Napoli Italy
| | - Vincenzo Piscopo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli" Viale Abramo Lincoln 5 I-81100 Caserta Italy
| | - Rosa Gaglione
- Department of Chemical Sciences, University of Napoli Federico II Via Cintia 4 I-80126 Napoli Italy
- Istituto Nazionale di Biostrutture e Biosistemi (INBB) Viale delle Medaglie d'Oro 305 I-80145 Roma Italy
| | - Angela Arciello
- Department of Chemical Sciences, University of Napoli Federico II Via Cintia 4 I-80126 Napoli Italy
- Istituto Nazionale di Biostrutture e Biosistemi (INBB) Viale delle Medaglie d'Oro 305 I-80145 Roma Italy
| | - Mauro De Nisco
- Department of Sciences, University of Basilicata Viale dell'Ateneo Lucano I-85100 Potenza Italy
| | - Severina Pacifico
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli" Viale Abramo Lincoln 5 I-81100 Caserta Italy
| | - Bruno Catalanotti
- Department of Pharmacy, University of Napoli Federico II Via Domenico Montesano 49 I-80131 Napoli Italy
| | - Silvana Pedatella
- Department of Chemical Sciences, University of Napoli Federico II Via Cintia 4 I-80126 Napoli Italy
| |
Collapse
|
2
|
Waugh ML, Wolf LM, Moore KA, Servoss SL, Moss MA. Rationally Designed Peptoid Inhibitors of Amyloid-β Oligomerization. Chembiochem 2024; 25:e202400060. [PMID: 38715149 PMCID: PMC11219258 DOI: 10.1002/cbic.202400060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024]
Abstract
While plaques comprised of fibrillar Aβ aggregates are hallmarks of Alzheimer's disease, soluble Aβ oligomers present higher neurotoxicity. Thus, one therapeutic approach is to prevent the formation of Aβ oligomers and reduce their associated harmful effects. We have proposed a peptoid mimic of the Aβ hydrophobic KLVFF core as an ideal candidate aggregation inhibitor due to its ability to evade proteolytic degradation via repositioning of the side chain from the α-carbon to the amide nitrogen. This peptoid, JPT1, utilizes chiral sidechains to achieve a helical structure, while C-terminal addition of two phenylalanine residues places aromatic groups on two sides of the helix with spacing designed to facilitate interaction with amyloid β-sheet structure. We have previously shown that JPT1 modulates Aβ fibril formation. Here, we demonstrate that JPT1 also modulates Aβ oligomerization, and we explore the role of the charge on the linker between the KLVFF mimic and the extended aromatic residues. Additionally, we demonstrate that peptoid-induced changes in Aβ oligomerization correlate with attenuation of oligomer-induced nuclear factor-κB activation in SH-SY5Y human neuroblastoma cells. These findings support the therapeutic potential of peptoids to target early stages of Aβ aggregation and impact the associated Aβ-induced cellular response.
Collapse
Affiliation(s)
- Mihyun Lim Waugh
- Department of Biomedical Engineering, University of South Carolina, 3A46 Swearingen Engineering Center, Columbia, SC 29208, USA
| | - Lauren M Wolf
- Department of Biomedical Engineering, University of South Carolina, 3A46 Swearingen Engineering Center, Columbia, SC 29208, USA
| | - Kelly A Moore
- Department of Biomedical Engineering, University of South Carolina, 3A46 Swearingen Engineering Center, Columbia, SC 29208, USA
| | - Shannon L Servoss
- Ralph E. Martin Department of Chemical Engineering, University of Arkansas, 3202 Bell Engineering Center, Fayetteville, AR 72701, USA
| | - Melissa A Moss
- Department of Biomedical Engineering, University of South Carolina, 3A46 Swearingen Engineering Center, Columbia, SC 29208, USA
- Department of Chemical Engineering, University of South Carolina, 2C02 Swearingen Engineering Center, Columbia, SC 29208, USA
| |
Collapse
|
3
|
Chaki S, Santra S, Dasgupta S. Fibrillation of Human Serum Albumin Differentially Affected by Asp-, Arg-, and Tyr-Capped Gold Nanoparticles. J Phys Chem B 2024; 128:3538-3553. [PMID: 38507578 DOI: 10.1021/acs.jpcb.3c06932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Fibrillation of proteins is associated with a number of debilitating diseases, including various neurodegenerative disorders. Prevention of the protein fibrillation process is therefore of immense importance. We investigated the effect of amino acid-capped AuNPs on the prevention of the fibrillation process of human serum albumin (HSA), a model protein. Amino acid-capped AuNPs of varying sizes and agglomeration extents were synthesized under physiological conditions. The AuNPs were characterized by their characteristic surface plasmon resonance (SPR), and their interactions with HSA were investigated through emission spectroscopy in addition to circular dichroism (CD) spectral analyses. Fluorescence lifetime imaging (FLIM) as well as transmission electron microscopy (TEM) were used to observe the fibrillar network. Thermodynamic and kinetic analyses from CD and fluorescence emission spectra provided insights into the fibrillation pathway adopted by HSA in the presence of capped AuNPs. Kinetics of the fibrillation pathway followed by ThT fluorescence emission confirmed the sigmoidal nature of the process. The highest cooperativity was observed in the case of Asp-AuNPs with HSA. This was in accordance with the ΔG value obtained from the CD spectral analyses, where Arg-AuNPs with HSA showed the highest positive ΔG value and Asp-AuNPs with HSA showed the most negative ΔG value. The study provides information about the potential use of conjugate AuNPs to monitor the fibrillation process in proteins.
Collapse
Affiliation(s)
- Sreshtha Chaki
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sujan Santra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| |
Collapse
|
4
|
Zhang D, Zhang J, Ma Z, Wu Q, Liu M, Fan T, Ding L, Ren D, Wen A, Wang J. Luteoloside inhibits Aβ1-42 fibrillogenesis, disintegrates preformed fibrils, and alleviates amyloid-induced cytotoxicity. Biophys Chem 2024; 306:107171. [PMID: 38194817 DOI: 10.1016/j.bpc.2023.107171] [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: 10/25/2023] [Revised: 12/17/2023] [Accepted: 12/30/2023] [Indexed: 01/11/2024]
Abstract
Abnormal aggregation and fibrillogenesis of amyloid-β protein (Aβ) can cause Alzheimer's disease (AD). Thus, the discovery of effective drugs that inhibit Aβ fibrillogenesis in the brain is crucial for the treatment of AD. Luteoloside, as one of the polyphenolic compounds, is found to have a certain therapeutic effect on nervous system diseases. However, it remains unknown whether luteoloside is a potential drug for treating AD by modulating Aβ aggregation pathway. In this study, we performed diverse biophysical and biochemical methods to explore the inhibition of luteoloside on Aβ1-42 which is linked to AD. The results demonstrated that luteoloside efficiently prevented amyloid oligomerization and cross-β-sheet formation, reduced the rate of amyloid growth and the length of amyloid fibrils in a dose-dependent manner. Moreover, luteoloside was able to influence aggregation and conformation of Aβ1-42 during different fiber-forming phases, and it could disintegrate already preformed fibrils of Aβ1-42 and convert them into nontoxic aggregates. Furthermore, luteoloside protected cells from amyloid-induced cytotoxicity and hemolysis, and attenuated the level of reactive oxygen species (ROS). The molecular docking study showed that luteoloside interacted with Aβ1-42 mainly via Conventional Hydrogen Bond, Carbon Hydrogen Bond, Pi-Pi T-shaped, Pi-Alkyl and Pi-Anion, thereby possibly preventing it from forming the aggregates. These observations indicate that luteoloside, a natural anti-oxidant molecule, may be applicable as an effective inhibitor of Aβ, and promote further exploration of the therapeutic strategy against AD.
Collapse
Affiliation(s)
- Di Zhang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Juanli Zhang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Zhongying Ma
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Qianwen Wu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Meiyou Liu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Tingting Fan
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Likun Ding
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Danjun Ren
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Jingwen Wang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| |
Collapse
|
5
|
Puneeth Kumar DRGKR, Nalawade SA, Pahan S, Singh M, Senapati DK, Roy S, Dey S, Toraskar SU, Raghothama S, Gopi HN. Proteolytically Stable ααγ-Hybrid Peptides Inhibit the Aggregation and Cytotoxicity of Aβ 42. ACS Chem Neurosci 2023; 14:3398-3408. [PMID: 37656905 DOI: 10.1021/acschemneuro.3c00302] [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] [Indexed: 09/03/2023] Open
Abstract
The recent approval of antibody-based therapy for targeting the clearance of amyloid plaques fuels the research in designing small molecules and peptide inhibitors to target the aggregation of Aβ-peptides. Here, we report that the 15-residue ααγ-hybrid peptide not only inhibits the aggregation of soluble Aβ42 into fibrils but also disintegrates the aggregated Aβ42 fibrils into smaller assemblies. Further, the hybrid peptide completely rescues neuronal cells from the toxicity of Aβ42 at equimolar concentrations. The shorter 10- and 12-mer peptides showed weak aggregation inhibition activity, while the fully hydrophobic 15-mer ααγ-hybrid peptide analogue showed no aggregation inhibition activity. Further, the 15-mer ααγ-hybrid peptide showed resistance against trypsin digestion and also nontoxic to the neuronal cells. The CD revealed that the peptide upon interaction induces a helix-type conformation in the Aβ42. This is in sharp contrast to the β-sheet conformation of Aβ42 upon incubation. The two-dimensional-NMR (2D-NMR) analysis revealed a large perturbation in the chemical shifts of residues at the N-terminus. The presence of 15-mer peptide at an equimolar concentration of Aβ42 showed less tendency for aggregation and also exhibited nontoxicity to the neuronal cells. The results reported here may be useful in designing new therapeutics for Alzheimer's disease.
Collapse
Affiliation(s)
- DRGKoppalu R Puneeth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Sachin A Nalawade
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Saikat Pahan
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Manjeet Singh
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Dillip K Senapati
- NMR Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Souvik Roy
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Sanjit Dey
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Sandip U Toraskar
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | | | - Hosahudya N Gopi
- Department of Chemistry, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| |
Collapse
|
6
|
Gastelum S, Michael AF, Bolger TA. Saccharomyces cerevisiae as a research tool for RNA-mediated human disease. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 15:e1814. [PMID: 37671427 DOI: 10.1002/wrna.1814] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 09/07/2023]
Abstract
The budding yeast, Saccharomyces cerevisiae, has been used for decades as a powerful genetic tool to study a broad spectrum of biological topics. With its ease of use, economic utility, well-studied genome, and a highly conserved proteome across eukaryotes, it has become one of the most used model organisms. Due to these advantages, it has been used to study an array of complex human diseases. From broad, complex pathological conditions such as aging and neurodegenerative disease to newer uses such as SARS-CoV-2, yeast continues to offer new insights into how cellular processes are affected by disease and how affected pathways might be targeted in therapeutic settings. At the same time, the roles of RNA and RNA-based processes have become increasingly prominent in the pathology of many of these same human diseases, and yeast has been utilized to investigate these mechanisms, from aberrant RNA-binding proteins in amyotrophic lateral sclerosis to translation regulation in cancer. Here we review some of the important insights that yeast models have yielded into the molecular pathology of complex, RNA-based human diseases. This article is categorized under: RNA in Disease and Development > RNA in Disease.
Collapse
Affiliation(s)
- Stephanie Gastelum
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona, USA
| | - Allison F Michael
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA
| | - Timothy A Bolger
- Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA
| |
Collapse
|
7
|
Gupta SM, Behera A, Jain NK, Tripathi A, Rishipathak D, Singh S, Ahemad N, Erol M, Kumar D. Development of substituted benzylidene derivatives as novel dual cholinesterase inhibitors for Alzheimer's treatment. RSC Adv 2023; 13:26344-26356. [PMID: 37671344 PMCID: PMC10476022 DOI: 10.1039/d3ra03224h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 08/26/2023] [Indexed: 09/07/2023] Open
Abstract
Leading pathological markers of Alzheimer's disease (AD) include Acetylcholinesterase (AChE), Butyrylcholinesterase (BuChE), Amyloid beta (Aβ) and reactive oxygen species (ROS). Indole derivatives were identified and optimized to improve the potency against AChE, BuChE, Aβ and ROS. The lead molecule IND-30 was found to be selective for AChE (selectivity ratio: 22.92) in comparison to BuChE and showed maximum inhibition potential for human AChE (IC50: 4.16 ± 0.063 μM). IND-30 was found to be safe on the SH-SY5Y cell line until the dose of 30 mM. Further, molecule IND-30 was evaluated for its ability to inhibit AChE-induced Aβ aggregation at 0.5, 10 and 20 μM doses. Approximately, 50% of AChE-induced Aβ aggregation was inhibited by IND-30. Thus, IND-30 was found to be multitargeting for AD.
Collapse
Affiliation(s)
- Shraddha Manish Gupta
- Faculty of Pharmacy, Oriental University Indore 453555 Madhya Pradesh India
- Department of Pharmaceutical Sciences, School of Health Sciences and Technology, University of Petroleum and Energy Studies (UPES) Dehradun 48007 India
| | - Ashok Behera
- Faculty of Pharmacy, School of Pharmacy and Population Health Informatics, DIT University Makkawala Dehradun Uttarakhand India
| | - Neetesh K Jain
- Faculty of Pharmacy, Oriental University Indore 453555 Madhya Pradesh India
| | - Avanish Tripathi
- Institute of Pharmaceutical Research, GLA University Mathura 281 406 U.P. India
| | - Dinesh Rishipathak
- Department of Pharmaceutical Chemistry, MET's Institute of Pharmacy Nasik Maharashtra India
| | - Siddharth Singh
- Department of Pharmaceutical Sciences, School of Health Sciences and Technology, University of Petroleum and Energy Studies (UPES) Dehradun 48007 India
| | - Nafees Ahemad
- School of Pharmacy, Monash University Jalan Lagoon Selatan, Bandar Sunway Petaling Jaya 47500 Selangor DE Malaysia
| | - Meryem Erol
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erciyes University Kayseri Turkey
| | - Devendra Kumar
- School of Pharmacy & Technology Management, SVKM's NMIMS (Deemed-to-be) University Mukesh Patel Technology Park Shirpur 425405 India +91 542 368428 +91 9455714362
| |
Collapse
|
8
|
Epremyan KK, Mamaev DV, Zvyagilskaya RA. Alzheimer's Disease: Significant Benefit from the Yeast-Based Models. Int J Mol Sci 2023; 24:9791. [PMID: 37372938 DOI: 10.3390/ijms24129791] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/02/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Alzheimer's disease (AD) is an age-related, multifaceted neurological disorder associated with accumulation of aggregated proteins (amyloid Aβ and hyperphosphorylated tau), loss of synapses and neurons, and alterations in microglia. AD was recognized by the World Health Organization as a global public health priority. The pursuit of a better understanding of AD forced researchers to pay attention to well-defined single-celled yeasts. Yeasts, despite obvious limitations in application to neuroscience, show high preservation of basic biological processes with all eukaryotic organisms and offer great advantages over other disease models due to the simplicity, high growth rates on low-cost substrates, relatively simple genetic manipulations, the large knowledge base and data collections, and availability of an unprecedented amount of genomic and proteomic toolboxes and high-throughput screening techniques, inaccessible to higher organisms. Research reviewed above clearly indicates that yeast models, together with other, more simple eukaryotic models including animal models, C. elegans and Drosophila, significantly contributed to understanding Aβ and tau biology. These models allowed high throughput screening of factors and drugs that interfere with Aβ oligomerization, aggregation and toxicity, and tau hyperphosphorylation. In the future, yeast models will remain relevant, with a focus on creating novel high throughput systems to facilitate the identification of the earliest AD biomarkers among different cellular networks in order to achieve the main goal-to develop new promising therapeutic strategies to treat or prevent the disease.
Collapse
Affiliation(s)
- Khoren K Epremyan
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33/2, 119071 Moscow, Russia
| | - Dmitry V Mamaev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33/2, 119071 Moscow, Russia
| | - Renata A Zvyagilskaya
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33/2, 119071 Moscow, Russia
| |
Collapse
|
9
|
Catania M, Colombo L, Sorrentino S, Cagnotto A, Lucchetti J, Barbagallo MC, Vannetiello I, Vecchi ER, Favagrossa M, Costanza M, Giaccone G, Salmona M, Tagliavini F, Di Fede G. A novel bio-inspired strategy to prevent amyloidogenesis and synaptic damage in Alzheimer's disease. Mol Psychiatry 2022; 27:5227-5234. [PMID: 36028569 PMCID: PMC9763104 DOI: 10.1038/s41380-022-01745-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/01/2022] [Accepted: 08/11/2022] [Indexed: 01/19/2023]
Abstract
Alzheimer's disease (AD) is an irreversible neurodegenerative disorder that affects millions of people worldwide. AD pathogenesis is intricate. It primarily involves two main molecular players-amyloid-β (Aβ) and tau-which actually have an intrinsic trend to generate molecular assemblies that are toxic to neurons. Incomplete knowledge of the molecular mechanisms inducing the onset and sustaining the progression of the disease, as well as the lack of valid models to fully recapitulate the pathogenesis of human disease, have until now hampered the development of a successful therapy for AD. The overall experience with clinical trials with a number of potential drugs-including the recent outcomes of studies with monoclonal antibodies against Aβ-seems to indicate that Aβ-targeting is not effective if it is not accompanied by an efficient challenge of Aβ neurotoxic properties. We took advantage from the discovery of a naturally-occurring variant of Aβ (AβA2V) that has anti-amyloidogenic properties, and designed a novel bio-inspired strategy for AD based on the intranasal delivery of a six-mer peptide (Aβ1-6A2V) retaining the anti-amyloidogenic abilities of the full-length AβA2V variant. This approach turned out to be effective in preventing the aggregation of wild type Aβ and averting the synaptic damage associated with amyloidogenesis in a mouse model of AD. The results of our preclinical studies inspired by a protective model already existing in nature, that is the human heterozygous AβA2V carriers which seem to be protected from AD, open the way to an unprecedented and promising approach for the prevention of the disease in humans.
Collapse
Affiliation(s)
- Marcella Catania
- Neurology V - Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy
| | - Laura Colombo
- Department of Molecular Biochemistry and Pharmacology, IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Stefano Sorrentino
- Neurology V - Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy
| | - Alfredo Cagnotto
- Department of Molecular Biochemistry and Pharmacology, IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Jacopo Lucchetti
- Department of Molecular Biochemistry and Pharmacology, IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Maria Chiara Barbagallo
- Neurology V - Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy
| | - Ilaria Vannetiello
- Neurology V - Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy
| | - Elena Rita Vecchi
- Neurology V - Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy
| | - Monica Favagrossa
- Department of Molecular Biochemistry and Pharmacology, IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Massimo Costanza
- Molecular Neuro-Oncology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy
| | - Giorgio Giaccone
- Neurology V - Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy
| | - Mario Salmona
- Department of Molecular Biochemistry and Pharmacology, IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Fabrizio Tagliavini
- Neurology V - Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy
| | - Giuseppe Di Fede
- Neurology V - Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milan, Italy.
| |
Collapse
|
10
|
Ramesh M, Govindaraju T. Multipronged diagnostic and therapeutic strategies for Alzheimer's disease. Chem Sci 2022; 13:13657-13689. [PMID: 36544728 PMCID: PMC9710308 DOI: 10.1039/d2sc03932j] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 10/13/2022] [Indexed: 12/24/2022] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder and a major contributor to dementia cases worldwide. AD is clinically characterized by learning, memory, and cognitive deficits. The accumulation of extracellular amyloid β (Aβ) plaques and neurofibrillary tangles (NFTs) of tau are the pathological hallmarks of AD and are explored as targets for clinical diagnosis and therapy. AD pathology is poorly understood and there are no fully approved diagnosis and treatments. Notwithstanding the gap, decades of research in understanding disease mechanisms have revealed the multifactorial nature of AD. As a result, multipronged and holistic approaches are pertinent to targeting multiple biomarkers and targets for developing effective diagnosis and therapeutics. In this perspective, recent developments in Aβ and tau targeted diagnostic and therapeutic tools are discussed. Novel indirect, combination, and circulating biomarkers as potential diagnostic targets are highlighted. We underline the importance of multiplexing and multimodal detection of multiple biomarkers to generate biomarker fingerprints as a reliable diagnostic strategy. The classical therapeutics targeting Aβ and tau aggregation pathways are described with bottlenecks in the strategy. Drug discovery efforts targeting multifaceted toxicity involving protein aggregation, metal toxicity, oxidative stress, mitochondrial damage, and neuroinflammation are highlighted. Recent efforts focused on multipronged strategies to rationally design multifunctional modulators targeting multiple pathological factors are presented as future drug development strategies to discover potential therapeutics for AD.
Collapse
Affiliation(s)
- Madhu Ramesh
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru Karnataka 560064 India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru Karnataka 560064 India
| |
Collapse
|
11
|
Callis TB, Garrett TR, Montgomery AP, Danon JJ, Kassiou M. Recent Scaffold Hopping Applications in Central Nervous System Drug Discovery. J Med Chem 2022; 65:13483-13504. [PMID: 36206553 DOI: 10.1021/acs.jmedchem.2c00969] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The concept of bioisosterism and the implementation of bioisosteric replacement is fundamental to medicinal chemistry. The exploration of bioisosteres is often used to probe key structural features of candidate pharmacophores and enhance pharmacokinetic properties. As the understanding of bioisosterism has evolved, capabilities to undertake more ambitious bioisosteric replacements have emerged. Scaffold hopping is a broadly used term in the literature referring to a variety of different bioisosteric replacement strategies, ranging from simple heterocyclic replacements to topological structural overhauls. In this work, we have highlighted recent applications of scaffold hopping in the central nervous system drug discovery space. While we have highlighted the benefits of using scaffold hopping approaches in central nervous system drug discovery, these are also widely applicable to other medicinal chemistry fields. We also recommend a shift toward the use of more refined and meaningful terminology within the realm of scaffold hopping.
Collapse
Affiliation(s)
- Timothy B Callis
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Taylor R Garrett
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | | | - Jonathan J Danon
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Michael Kassiou
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| |
Collapse
|
12
|
The current state of amyloidosis therapeutics and the potential role of fluorine in their treatment. Biochimie 2022; 202:123-135. [PMID: 35963462 DOI: 10.1016/j.biochi.2022.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 07/22/2022] [Accepted: 08/04/2022] [Indexed: 11/22/2022]
Abstract
Amyloidosis, commonly known as amyloid-associated diseases, is characterized by improperly folded proteins accumulating in tissues and eventually causing organ damage, which is linked to several disorders ranging from neurodegenerative to peripheral diseases. It has an enormous societal and financial impact on the global health sector. Due to the complexity of protein misfolding and intertwined aggregation, there are no effective disease-modifying medications at present, and the condition is likely mis/non-diagnosed half of the time. Nonetheless, over the last two decades, substantial research into aggregation processes has revealed the possibilities of new intervention approaches. On the other hand, fluorine has been a rising star in therapeutic development for numerous neurodegenerative illnesses and other peripheral diseases. In this study, we revised and emphasized the possible significance of fluorine-modified therapeutic molecules and fluorine-modified nanoparticles (NPs) in the modulation of amyloidogenic proteins, including insulin, amyloid beta peptide (Aβ), prion protein (PrP), transthyretin (TTR) and Huntingtin (htt).
Collapse
|
13
|
Ramesh M, Balachandra C, Andhare P, Govindaraju T. Rationally Designed Molecules Synergistically Modulate Multifaceted Aβ Toxicity, Microglial Activation, and Neuroinflammation. ACS Chem Neurosci 2022; 13:2209-2221. [PMID: 35759686 DOI: 10.1021/acschemneuro.2c00276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Synergistic modulation of multifaceted toxicity is the key to tackle multifactorial Alzheimer's disease (AD). The etiology of AD includes amyloid β (Aβ) amyloidosis, metal ion dyshomeostasis, reactive oxygen species (ROS), oxidative stress, mitochondrial damage, and neuroinflammation. We rationally designed multifunctional modulators by integrating pharmacophores for metal chelation, antioxidant and anti-inflammatory properties, and modulation of Aβ42 aggregation on the naphthalene monoimide (NMI) scaffold. The in vitro and cellular studies of NMIs revealed that M3 synergistically modulates metal-independent and -dependent amyloid toxicity, scavenges ROS, alleviates oxidative stress, and emulates Nrf2-mediated stress response in neuronal cells. M3 effectively reduced structural and functional damage of mitochondria, reduced Cyt c levels, and rescued cells from apoptosis. The biological atomic force microscopy and Western blot analysis revealed the ability of M3 to suppress microglial activation and neuroinflammation through inhibition of the NF-κβ pathway. The synergistic action of M3 is in agreement with our design strategy to develop a multifunctional therapeutic candidate by integrating multiple pharmacophores with distinct structural and functional elements to ameliorate the multifaceted toxicity of AD.
Collapse
Affiliation(s)
- Madhu Ramesh
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, Karnataka 560064, India
| | - Chenikkayala Balachandra
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, Karnataka 560064, India
| | - Pradhnesh Andhare
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, Karnataka 560064, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, Karnataka 560064, India
| |
Collapse
|
14
|
Padhi D, Govindaraju T. Mechanistic Insights for Drug Repurposing and the Design of Hybrid Drugs for Alzheimer's Disease. J Med Chem 2022; 65:7088-7105. [PMID: 35559617 DOI: 10.1021/acs.jmedchem.2c00335] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The heterogeneity and complex nature of Alzheimer's disease (AD) is attributed to several genetic risk factors and molecular culprits. The slow pace and increasing failure rate of conventional drug discovery has led to the exploration of complementary strategies based on repurposing approved drugs to treat AD. Drug repurposing (DR) is a cost-effective, low-risk, and efficient approach for identifying novel therapeutic candidates for AD treatment. Similarly, hybrid drug design through the integration of distinct pharmacophores from known or failed drugs and natural products is an interesting strategy to target the multifactorial nature of AD. In this Perspective, we discuss the potential of DR and highlight promising drug candidates that can be advanced for clinical trials, backed by a detailed discussion on their plausible mechanisms of action. Our article fosters research on the hidden potential of DR and hybrid drug design with the goal of unravelling new drugs and targets to tackle AD.
Collapse
Affiliation(s)
- Dikshaa Padhi
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, Karnataka 560064, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, Karnataka 560064, India
| |
Collapse
|
15
|
Chen T, Sun T, Bian Y, Pei Y, Feng F, Chi H, Li Y, Tang X, Sang S, Du C, Chen Y, Chen Y, Sun H. The Design and Optimization of Monomeric Multitarget Peptides for the Treatment of Multifactorial Diseases. J Med Chem 2022; 65:3685-3705. [DOI: 10.1021/acs.jmedchem.1c01456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tingkai Chen
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Tianyu Sun
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Yaoyao Bian
- College of Acupuncture and Massage, College of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Yuqiong Pei
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Feng Feng
- Food and Pharmaceutical Research Institute, Jiangsu Food and Pharmaceuticals Science College, Huaian 223003, People’s Republic of China
| | - Heng Chi
- Food and Pharmaceutical Research Institute, Jiangsu Food and Pharmaceuticals Science College, Huaian 223003, People’s Republic of China
| | - Yuan Li
- Department of Pharmaceutical Engineering, Jiangsu Food and Pharmaceuticals Science College, Huaian 223005, People’s Republic of China
| | - Xu Tang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Shenghu Sang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Chenxi Du
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Ying Chen
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Yao Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
| | - Haopeng Sun
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| |
Collapse
|
16
|
Ramesh M, Acharya A, Murugan NA, Ila H, Govindaraju T. Thiophene-Based Dual Modulators of Aβ and Tau Aggregation. Chembiochem 2021; 22:3348-3357. [PMID: 34546619 DOI: 10.1002/cbic.202100383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/21/2021] [Indexed: 01/29/2023]
Abstract
Alzheimer's disease is characterized by the accumulation of amyloid beta (Aβ) and Tau aggregates in the brain, which induces various pathological events resulting in neurodegeneration. There have been continuous efforts to develop modulators of the Aβ and Tau aggregation process to halt or modify disease progression. A few small-molecule-based inhibitors that target both Aβ and Tau pathology have been reported. Here, we report the screening of a targeted library of small molecules to modulate Aβ and Tau aggregation together with their in vitro, in silico and cellular studies. In vitro ThT fluorescence assay, dot blot assay, gel electrophoresis and transmission electron microscopy (TEM) results have shown that thiophene-based lead molecules effectively modulate Aβ aggregation and inhibit Tau aggregation. In silico studies performed by employing molecular docking, molecular dynamics and binding-free energy calculations have helped in understanding the mechanism of interaction of the lead thiophene compounds with Aβ and Tau fibril targets. In cellulo studies revealed that the lead candidate is biocompatible and effectively ameliorates neuronal cells from Aβ and Tau-mediated amyloid toxicity.
Collapse
Affiliation(s)
- Madhu Ramesh
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064, Karnataka, India
| | - Anand Acharya
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064, Karnataka, India
| | - N Arul Murugan
- Department of Computer Science, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
| | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064, Karnataka, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064, Karnataka, India
| |
Collapse
|
17
|
Breaker peptides against amyloid-β aggregation: a potential therapeutic strategy for Alzheimer's disease. Future Med Chem 2021; 13:1767-1794. [PMID: 34498978 DOI: 10.4155/fmc-2021-0184] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder, for which blocking the early steps of extracellular misfolded amyloid-β (Aβ) aggregation is a promising therapeutic approach. However, the pathological features of AD progression include the accumulation of intracellular tau protein, membrane-catalyzed cell death and the abnormal deposition of Aβ. Here, we focus on anti-amyloid breaker peptides derived from the Aβ sequence and non-Aβ-based peptides containing both natural and modified amino acids. Critical aspects of the breaker peptides include N-methylation, conformational restriction through cyclization, incorporation of unnatural amino acid, fluorinated molecules, polymeric nanoparticles and PEGylation. This review confers a general idea of such breaker peptides with in vitro and in vivo studies, which may advance our understanding of AD pathology and develop an effective treatment strategy against AD.
Collapse
|
18
|
Chaudhary H, Iashchishyn IA, Romanova NV, Rambaran MA, Musteikyte G, Smirnovas V, Holmboe M, Ohlin CA, Svedružić ŽM, Morozova-Roche LA. Polyoxometalates as Effective Nano-inhibitors of Amyloid Aggregation of Pro-inflammatory S100A9 Protein Involved in Neurodegenerative Diseases. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26721-26734. [PMID: 34080430 PMCID: PMC8289188 DOI: 10.1021/acsami.1c04163] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Pro-inflammatory and amyloidogenic S100A9 protein is central to the amyloid-neuroinflammatory cascade in neurodegenerative diseases. Polyoxometalates (POMs) constitute a diverse group of nanomaterials, which showed potency in amyloid inhibition. Here, we have demonstrated that two selected nanosized niobium POMs, Nb10 and TiNb9, can act as potent inhibitors of S100A9 amyloid assembly. Kinetics analysis based on ThT fluorescence experiments showed that addition of either Nb10 or TiNb9 reduces the S100A9 amyloid formation rate and amyloid quantity. Atomic force microscopy imaging demonstrated the complete absence of long S100A9 amyloid fibrils at increasing concentrations of either POM and the presence of only round-shaped and slightly elongated aggregates. Molecular dynamics simulation revealed that both Nb10 and TiNb9 bind to native S100A9 homo-dimer by forming ionic interactions with the positively charged Lys residue-rich patches on the protein surface. The acrylamide quenching of intrinsic fluorescence showed that POM binding does not perturb the Trp 88 environment. The far and near UV circular dichroism revealed no large-scale perturbation of S100A9 secondary and tertiary structures upon POM binding. These indicate that POM binding involves only local conformational changes in the binding sites. By using intrinsic and 8-anilino-1-naphthalene sulfonate fluorescence titration experiments, we found that POMs bind to S100A9 with a Kd of ca. 2.5 μM. We suggest that the region, including Lys 50 to Lys 54 and characterized by high amyloid propensity, could be the key sequences involved in S1009 amyloid self-assembly. The inhibition and complete hindering of S100A9 amyloid pathways may be used in the therapeutic applications targeting the amyloid-neuroinflammatory cascade in neurodegenerative diseases.
Collapse
Affiliation(s)
- Himanshu Chaudhary
- Department
of Medical Biochemistry and Biophysics, Umeå University, Umeå 90187, Sweden
| | - Igor A. Iashchishyn
- Department
of Medical Biochemistry and Biophysics, Umeå University, Umeå 90187, Sweden
| | - Nina V. Romanova
- Department
of Medical Biochemistry and Biophysics, Umeå University, Umeå 90187, Sweden
| | | | - Greta Musteikyte
- Institute
of Biotechnology, Life Sciences Center, Vilnius University, Vilnius LT-10257, Lithuania
| | - Vytautas Smirnovas
- Institute
of Biotechnology, Life Sciences Center, Vilnius University, Vilnius LT-10257, Lithuania
| | - Michael Holmboe
- Department
of Chemistry, Umeå University, 90187 Umeå, Sweden
| | - C. André Ohlin
- Department
of Chemistry, Umeå University, 90187 Umeå, Sweden
| | | | - Ludmilla A. Morozova-Roche
- Department
of Medical Biochemistry and Biophysics, Umeå University, Umeå 90187, Sweden
- . Tel.: +46736205283. Fax: +46907865283
| |
Collapse
|
19
|
Anand BG, Wu Q, Karthivashan G, Shejale KP, Amidian S, Wille H, Kar S. Mimosine functionalized gold nanoparticles (Mimo-AuNPs) suppress β-amyloid aggregation and neuronal toxicity. Bioact Mater 2021; 6:4491-4505. [PMID: 34027236 PMCID: PMC8131740 DOI: 10.1016/j.bioactmat.2021.04.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/18/2021] [Accepted: 04/19/2021] [Indexed: 12/27/2022] Open
Abstract
Evidence suggests that increased level/aggregation of beta-amyloid (Aβ) peptides initiate neurodegeneration and subsequent development of Alzheimer's disease (AD). At present, there is no effective treatment for AD. In this study, we reported the effects of gold nanoparticles surface-functionalized with a plant-based amino acid mimosine (Mimo-AuNPs), which is found to cross the blood-brain barrier, on the Aβ fibrillization process and toxicity. Thioflavin T kinetic assays, fluorescence imaging and electron microscopy data showed that Mimo-AuNPs were able to suppress the spontaneous and seed-induced Aβ1-42 aggregation. Spectroscopic studies, molecular docking and biochemical analyses further revealed that Mimo-AuNPs stabilize Aβ1-42 to remain in its monomeric state by interacting with the hydrophobic domain of Aβ1-42 (i.e., Lys16 to Ala21) there by preventing a conformational shift towards the β-sheet structure. Additionally, Mimo-AuNPs were found to trigger the disassembly of matured Aβ1-42 fibers and increased neuronal viability by reducing phosphorylation of tau protein and the production of oxyradicals. Collectively, these results reveal that the surface-functionalization of gold nanoparticles with mimosine can attenuate Aβ fibrillization and neuronal toxicity. Thus, we propose Mimo-AuNPs may be used as a potential treatment strategy towards AD-related pathologies. Mimosine functionalized with gold nanoparticles (Mimo-AuNPs) can cross blood-brain barrier. Mimo-AuNPs inhibit aggregation of Aβ peptides by interacting with its hydrophobic domain. Mimo-AuNPs can trigger disassembly of pre-aggregated Aβ fibers. Mimo-AuNPs can protect neurons against Aβ toxicity by attenuating intracellular signaling.
Collapse
Affiliation(s)
- Bibin G Anand
- Departments of Medicine and University of Alberta, Edmonton, Alberta, T6G 2M8, Canada.,Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada
| | - Qi Wu
- Departments of Medicine and University of Alberta, Edmonton, Alberta, T6G 2M8, Canada.,Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada
| | - Govindarajan Karthivashan
- Departments of Medicine and University of Alberta, Edmonton, Alberta, T6G 2M8, Canada.,Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada
| | - Kiran P Shejale
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, India
| | - Sara Amidian
- Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada.,Departments of Biochemistry, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada
| | - Holger Wille
- Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada.,Departments of Biochemistry, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada
| | - Satyabrata Kar
- Departments of Medicine and University of Alberta, Edmonton, Alberta, T6G 2M8, Canada.,Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, Alberta, T6G 2M8, Canada
| |
Collapse
|
20
|
Gorantla N, Sunny LP, Rajasekhar K, Nagaraju PG, CG PP, Govindaraju T, Chinnathambi S. Amyloid-β-Derived Peptidomimetics Inhibits Tau Aggregation. ACS OMEGA 2021; 6:11131-11138. [PMID: 34056268 PMCID: PMC8153954 DOI: 10.1021/acsomega.9b03497] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 03/18/2020] [Indexed: 05/08/2023]
Abstract
The aggregation of tau protein is one of the hallmarks for Alzheimer's disease, resulting in neurodegeneration. The peptidomimetics strategy to prevent tau aggregation is more specific over other small molecules. In the present study, we analyzed the effect of amyloid-β-derived peptidomimetics for inhibiting heparin-induced tau aggregation in vitro. These peptides and their derivatives were known to prevent aggregation of amyloid-β. KLVFF is a hydrophobic sequence of the pentapeptide that prevented tau aggregation as observed by thioflavin S fluorescence, transmission electron microscopy, and circular dichroism spectroscopy. P4 and P5 also prevented assembly of tau into aggregates and formed short fibrils. The β-sheet breaker LPFFD was however ineffective in preventing tau aggregation. The peptides further demonstrated reversal of tau-induced cytotoxicity in a dose-dependent manner. Our results suggested that these peptides can also be used to inhibit tau aggregation and also, toxicity induced by tau could be considered as potential molecules that have an effect on tau as well as amyloid-β.
Collapse
Affiliation(s)
- Nalini
V. Gorantla
- Neurobiology
Group, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, 411008 Pune, India
- Academy
of Scientific and Innovative Research (AcSIR), 411008 Pune, India
| | - Lisni P. Sunny
- Neurobiology
Group, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, 411008 Pune, India
- Academy
of Scientific and Innovative Research (AcSIR), 411008 Pune, India
| | - Kolla Rajasekhar
- Bioorganic
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru 560064, Karnataka, India
| | - Pramod G. Nagaraju
- Department
of Molecular Nutrition, CSIR-CFTRI, 570020 Mysore, India
- Bioorganic
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru 560064, Karnataka, India
| | - Poornima Priyadarshini CG
- Department
of Molecular Nutrition, CSIR-CFTRI, 570020 Mysore, India
- Bioorganic
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru 560064, Karnataka, India
| | - Thimmaiah Govindaraju
- Bioorganic
Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru 560064, Karnataka, India
| | - Subashchandrabose Chinnathambi
- Neurobiology
Group, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, 411008 Pune, India
- Academy
of Scientific and Innovative Research (AcSIR), 411008 Pune, India
- . Phone: +91-20-25902232. Fax: +91-20-25902648
| |
Collapse
|
21
|
In-situ side-chain peptide cyclization as a breaker strategy against the amyloid aggregating peptide. Bioorg Med Chem 2021; 33:116017. [PMID: 33486160 DOI: 10.1016/j.bmc.2021.116017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 02/07/2023]
Abstract
Accumulation and deposition of misfolded amyloid β (Aβ) peptide outside the nerve cells are one of the major causes of Alzheimer's disease (AD). To date, one of the promising therapeutic strategies for AD is to block the early steps associated with the aggregation of Aβ peptide. We have developed synthetic breaker peptides derived from the original Aβ sequences that undergo self-cyclization in situ. We have focussed and replaced Val-18 (of Aβ) by side-chain modified glutamic acid (Glu-OBn) to generate adequate turn through in-situ peptide cyclization to disrupt the β-sheet structure of Aβ. The disruption of amyloid fibril formation and the mechanism of the 'inhibition of aggregation' were studied by various biophysical methods, such as ThT-assay, TEM, Congo-red birefringence study. CD and FTIR spectroscopy were used to characterize the conformational change during the aggregation process. Results suggest that designed breaker peptides may be useful to inhibit and disrupt not only Aβ peptide but related peptides that undergo aggregation.
Collapse
|
22
|
Moorthy H, Govindaraju T. Dendrimer Architectonics to Treat Cancer and Neurodegenerative Diseases with Implications in Theranostics and Personalized Medicine. ACS APPLIED BIO MATERIALS 2021; 4:1115-1139. [PMID: 35014470 DOI: 10.1021/acsabm.0c01319] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Integration of diagnostic and therapeutic functions in a single platform namely theranostics has become a cornerstone for personalized medicine. Theranostics platform facilitates noninvasive detection and treatment while allowing the monitoring of disease progression and therapeutic efficacy in case of chronic conditions of cancer and Alzheimer's disease (AD). Theranostic tools function by themselves or with the aid of carrier, viz. liposomes, micelles, polymers, or dendrimers. The dendrimer architectures (DA) are well-characterized molecular nanoobjects with a large number of terminal functional groups to enhance solubility and offer multivalency and multifunctional properties. Various noninvasive diagnostic tools like magnetic resonance imaging (MRI), computed tomography (CT), gamma scintigraphy, and optical techniques have been accomplished utilizing DAs for simultaneous imaging and drug delivery. Obstacles in the formulation design, drug loading, payload delivery, biocompatibility, overcoming cellular membrane and blood-brain barrier (BBB), and systemic circulation remain a bottleneck in translational efforts. This review focuses on the diagnostic, therapeutic and theranostic potential of DA-based nanocarriers in treating cancer and neurodegenerative disorders like AD and Parkinson's disease (PD), among others. In view of the inverse relationship between cancer and AD, designing suitable DA-based theranostic nanodrug with high selectivity has tremendous implications in personalized medicine to treat cancer and neurodegenerative disorders.
Collapse
Affiliation(s)
- Hariharan Moorthy
- Bioorganic Chemistry Laboratory, New Chemistry Unit and The School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P. O., Bengaluru, Karnataka 560064, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit and The School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P. O., Bengaluru, Karnataka 560064, India
| |
Collapse
|
23
|
Samanta S, Rajasekhar K, Ramesh M, Murugan NA, Alam S, Shah D, Clement JP, Govindaraju T. Naphthalene Monoimide Derivative Ameliorates Amyloid Burden and Cognitive Decline in a Transgenic Mouse Model of Alzheimer's Disease. ADVANCED THERAPEUTICS 2021. [DOI: 10.1002/adtp.202000225] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Sourav Samanta
- Bioorganic Chemistry Laboratory New Chemistry Unit Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru 560064 India
| | - Kolla Rajasekhar
- Bioorganic Chemistry Laboratory New Chemistry Unit Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru 560064 India
| | - Madhu Ramesh
- Bioorganic Chemistry Laboratory New Chemistry Unit Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru 560064 India
| | - Natarajan Arul Murugan
- Department of Theoretical Chemistry and Biology School of Chemistry Biotechnology and Health KTH Royal Institute of Technology S‐106 91 Stockholm Sweden
| | - Shadab Alam
- Bioorganic Chemistry Laboratory New Chemistry Unit Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru 560064 India
| | - Devanshi Shah
- Neuroscience Unit Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru 560064 India
| | - James Premdas Clement
- Neuroscience Unit Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru 560064 India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory New Chemistry Unit Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur P.O. Bengaluru 560064 India
| |
Collapse
|
24
|
Suresh SN, Jayaprakash Rao M, Manjithaya R. XCT 790 is a pharmacological aggrephagy inducer in a yeast model of proteotoxicity. Cell Biol Int 2021; 45:654-661. [PMID: 33415815 DOI: 10.1002/cbin.11518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/10/2020] [Accepted: 11/28/2020] [Indexed: 11/11/2022]
Abstract
Aggrephagy is a selective autophagic degradation intracellular mechanism that clears toxic misfolded protein aggregates such as α-synuclein. Here, we identify and demonstrate that the small molecule, XCT 790 alleviates α-synuclein-mediated adverse effects in a yeast model of proteotoxicity. XCT 790 induced general autophagy and also enhanced starvation-induced autophagy. Mechanistically, we showed that XCT 790 clears toxic α-synuclein aggregates in an autophagy-dependent manner. Interestingly, XCT 790 did not demonstrate a synergistic effect on autophagy induction in the presence of another autophagy inducer such as 6-Bio.
Collapse
Affiliation(s)
- S N Suresh
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India.,Centre for Brain Research, Indian Institute of Science, Bangalore, India
| | - Monala Jayaprakash Rao
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Ravi Manjithaya
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India.,Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| |
Collapse
|
25
|
Ramesh M, Rajasekhar K, Gupta K, Babagond V, Saini DK, Govindaraju T. A matrix targeted fluorescent probe to monitor mitochondrial dynamics. Org Biomol Chem 2021; 19:801-808. [PMID: 33410855 DOI: 10.1039/d0ob02128h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Mitochondria are an indispensable organelle for energy production and regulation of cellular metabolism. The structural and functional alterations to mitochondria instigate pathological conditions of cancer, and aging-associated and neurodegenerative disorders. The normal functioning of mitochondria is maintained by quality control mechanisms involving dynamic fission, fusion, biogenesis and mitophagy. Under conditions of mitophagy and neurodegenerative diseases, mitochondria are exposed to different acidic environments and high levels of reactive oxygen species (ROS). Therefore stable molecular tools and methods are required to monitor the pathways linked to mitochondrial dysfunction and disease conditions. Herein, we report a far-red fluorescent probe (Mito-TG) with excellent biocompatibility, biostability, photostability, chemical stability and turn on emission for selective targeting of the mitochondrial matrix in different live cells. The probe was successfully employed for monitoring dynamic processes of mitophagy and amyloid beta (Aβ) induced mitochondrial structural changes.
Collapse
Affiliation(s)
- Madhu Ramesh
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064 Karnataka, India.
| | - Kolla Rajasekhar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064 Karnataka, India.
| | - Kavya Gupta
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bengaluru 560012, India
| | - Vardhaman Babagond
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064 Karnataka, India.
| | - Deepak Kumar Saini
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bengaluru 560012, India
| | - Thimmaiah Govindaraju
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064 Karnataka, India. and VNIR Biotechnologies Pvt. Ltd, Bangalore Bioinnovation Center, Helix Biotech Park, Electronic City Phase I, Bengaluru 560100, Karnataka, India
| |
Collapse
|
26
|
Rationally designed peptide-based inhibitor of Aβ42 fibril formation and toxicity: a potential therapeutic strategy for Alzheimer's disease. Biochem J 2020; 477:2039-2054. [PMID: 32427336 PMCID: PMC7293109 DOI: 10.1042/bcj20200290] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/12/2020] [Accepted: 05/18/2020] [Indexed: 12/22/2022]
Abstract
Amyloid beta peptide (Aβ42) aggregation in the brain is thought to be responsible for the onset of Alzheimer's disease, an insidious condition without an effective treatment or cure. Hence, a strategy to prevent aggregation and subsequent toxicity is crucial. Bio-inspired peptide-based molecules are ideal candidates for the inhibition of Aβ42 aggregation, and are currently deemed to be a promising option for drug design. In this study, a hexapeptide containing a self-recognition component unique to Aβ42 was designed to mimic the β-strand hydrophobic core region of the Aβ peptide. The peptide is comprised exclusively of D-amino acids to enhance specificity towards Aβ42, in conjunction with a C-terminal disruption element to block the recruitment of Aβ42 monomers on to fibrils. The peptide was rationally designed to exploit the synergy between the recognition and disruption components, and incorporates features such as hydrophobicity, β-sheet propensity, and charge, that all play a critical role in the aggregation process. Fluorescence assays, native ion-mobility mass spectrometry (IM-MS) and cell viability assays were used to demonstrate that the peptide interacts with Aβ42 monomers and oligomers with high specificity, leading to almost complete inhibition of fibril formation, with essentially no cytotoxic effects. These data define the peptide-based inhibitor as a potentially potent anti-amyloid drug candidate for this hitherto incurable disease.
Collapse
|
27
|
Mitra A, Sarkar N. Sequence and structure-based peptides as potent amyloid inhibitors: A review. Arch Biochem Biophys 2020; 695:108614. [PMID: 33010227 DOI: 10.1016/j.abb.2020.108614] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/27/2020] [Accepted: 09/28/2020] [Indexed: 02/07/2023]
Abstract
Misfolded and natively disordered globular proteins tend to aggregate together in an interwoven fashion to form fibrous, proteinaceous deposits referred to as amyloid fibrils. Formation and deposition of such insoluble fibrils are the characteristic features of a broad group of diseases, known as amyloidosis. Some of these proteins are known to cause several degenerative disorders in humans, such as Amyloid-Beta (Aβ) in Alzheimer's disease (AD), human Islet Amyloid Polypeptide (hIAPP, amylin) in type 2 diabetes, α-synuclein (α-syn) in Parkinson's disease (PD) and so on. The fact that these proteins do not share any significant sequence or structural homology in their native states make therapy quite challenging. However, it is observed that aggregation-prone proteins and peptides tend to adopt a similar type of secondary structure during the formation of fibrils. Rationally designed peptides can be a potent inhibitor that has been shown to disrupt the fibril structure by binding specifically to the amyloidogenic region(s) within a protein. The following review will analyze the inhibitory potency of both sequence-based and structure-based small peptides that have been shown to inhibit amyloidogenesis of proteins such as Aβ, human amylin, and α-synuclein.
Collapse
Affiliation(s)
- Amit Mitra
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, 769008, Odisha, India
| | - Nandini Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, 769008, Odisha, India.
| |
Collapse
|
28
|
Roy R, Pradhan K, Khan J, Das G, Mukherjee N, Das D, Ghosh S. Human Serum Albumin-Inspired Glycopeptide-Based Multifunctional Inhibitor of Amyloid-β Toxicity. ACS OMEGA 2020; 5:18628-18641. [PMID: 32775865 PMCID: PMC7407538 DOI: 10.1021/acsomega.0c01028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/19/2020] [Indexed: 05/07/2023]
Abstract
In Alzheimer's disease (AD), insoluble Aβ42 peptide fragments self-aggregate and form oligomers and fibrils in the brain, causing neurotoxicity. Further, the presence of redox-active metal ions such as Cu2+ enhances the aggregation process through chelation with these Aβ42 aggregates as well as generation of Aβ42-mediated reactive oxygen species (ROS). Herein, we have adopted a bioinspired strategy to design and develop a multifunctional glycopeptide hybrid molecule (Glupep), which can serve as a potential AD therapeutic. This molecule consists of a natural metal-chelating tetrapeptide motif of human serum albumin (HSA), a β-sheet breaker peptide, and a sugar moiety for better bioavailability. We performed different biophysical and docking experiments, which revealed that Glupep not only associates with Aβ42 but also prevents its self-aggregation to form toxic oligomers and fibrils. Moreover, Glupep was also shown to sequester out Cu2+ from the Aβ-Cu2+ complex, reducing the ROS formation and toxicity. Besides, this study also revealed that Glupep could protect PC12-derived neurons from Aβ-Cu2+-mediated toxicity by reducing intracellular ROS generation and stabilizing the mitochondrial membrane potential. All these exciting features show Glupep to be a potent inhibitor of Aβ42-mediated multifaceted toxicity and a prospective therapeutic lead for AD.
Collapse
Affiliation(s)
- Rajsekhar Roy
- Department
of Bioscience & Bioengineering, Indian
Institute of Technology Jodhpur, NH 65, Surpura Bypass Road, Karwar, Rajasthan 342037, India
| | - Krishnangsu Pradhan
- Organic
and Medicinal Chemistry and Structural Biology and Bioinformatics
Division, CSIR-Indian Institute of Chemical
Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, WB, India
| | - Juhee Khan
- Organic
and Medicinal Chemistry and Structural Biology and Bioinformatics
Division, CSIR-Indian Institute of Chemical
Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, WB, India
| | - Gaurav Das
- Organic
and Medicinal Chemistry and Structural Biology and Bioinformatics
Division, CSIR-Indian Institute of Chemical
Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, WB, India
| | - Nabanita Mukherjee
- Department
of Bioscience & Bioengineering, Indian
Institute of Technology Jodhpur, NH 65, Surpura Bypass Road, Karwar, Rajasthan 342037, India
| | - Durba Das
- Department
of Bioscience & Bioengineering, Indian
Institute of Technology Jodhpur, NH 65, Surpura Bypass Road, Karwar, Rajasthan 342037, India
| | - Surajit Ghosh
- Organic
and Medicinal Chemistry and Structural Biology and Bioinformatics
Division, CSIR-Indian Institute of Chemical
Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, WB, India
- Department
of Bioscience & Bioengineering, Indian
Institute of Technology Jodhpur, NH 65, Surpura Bypass Road, Karwar, Rajasthan 342037, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
29
|
Balavigneswaran CK, Kumar G, Vignesh Kumar C, Sellamuthu S, Kasiviswanathan U, Ray B, Muthuvijayan V, Mahto SK, Misra N. Gelatin grafted poly(D,L-lactide) as an inhibitor of protein aggregation: An in vitro case study. Biopolymers 2020; 111:e23383. [PMID: 32604473 DOI: 10.1002/bip.23383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 05/15/2020] [Accepted: 05/21/2020] [Indexed: 11/10/2022]
Abstract
Amyloids are a group of proteins that are capable of forming aggregated amyloid fibrils, which is responsible for many neurodegenerative diseases including Alzheimer's disease (AD). In our previous study, synthesis and characterization of star-shaped poly(D,L-lactide)-b-gelatin (ss-pLG) have been reported. In the present work, we have extended our work to study ss-pLG against protein aggregation. To the best of our knowledge, this is the first report on the inhibition of amyloid fibrillation by protein grafted poly(D,L-lactide). Bovine serum albumin (BSA) was chosen as the model protein, which readily forms fibril under high temperature. We found that ss-pLG efficiently suppressed the fibril formation of BSA compared with gelatin (Gel), which was supported by Thioflavin T assay, circular dichroism (CD) spectroscopy and atomic force microscopy (AFM). In addition, ss-pLG significantly curtailed amyloid-induced hemolysis. We also found that incubation of ss-pLG with neuroblastoma cells (MC65) protected the cells from fibril-induced toxicity. The rescuing efficiency of ss-pLG was better than Gel, which could be attributed to the reduced lamella thickness in branched ss-pLG. These results suggest the significance of gelatin grafting, which probably allows gelatin to interact with the key residues of the amyloidogenic core of BSA effectively.
Collapse
Affiliation(s)
- Chelladurai Karthikeyan Balavigneswaran
- Polymer Engineering Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India.,Tissue Engineering and Biomaterials Laboratory, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Gaurav Kumar
- Electrophysiology Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India.,Department of Clinical Research, School of Biosciences and Biomedical Engineering, Galgotias University, Greater Noida, Uttar Pradesh, India
| | | | - Satheeshkumar Sellamuthu
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Uvanesh Kasiviswanathan
- Bioelectronics and Instrumentation Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Biswajit Ray
- Department of Chemistry, Institute of Science, Banaras Hindu University (BHU), Varanasi, Uttar Pradesh, India
| | - Vignesh Muthuvijayan
- Tissue Engineering and Biomaterials Laboratory, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - Sanjeev Kumar Mahto
- Tissue Engineering and Biomicrofluidics Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Nira Misra
- Polymer Engineering Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| |
Collapse
|
30
|
Chernoff YO, Grizel AV, Rubel AA, Zelinsky AA, Chandramowlishwaran P, Chernova TA. Application of yeast to studying amyloid and prion diseases. ADVANCES IN GENETICS 2020; 105:293-380. [PMID: 32560789 PMCID: PMC7527210 DOI: 10.1016/bs.adgen.2020.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Amyloids are fibrous cross-β protein aggregates that are capable of proliferation via nucleated polymerization. Amyloid conformation likely represents an ancient protein fold and is linked to various biological or pathological manifestations. Self-perpetuating amyloid-based protein conformers provide a molecular basis for transmissible (infectious or heritable) protein isoforms, termed prions. Amyloids and prions, as well as other types of misfolded aggregated proteins are associated with a variety of devastating mammalian and human diseases, such as Alzheimer's, Parkinson's and Huntington's diseases, transmissible spongiform encephalopathies (TSEs), amyotrophic lateral sclerosis (ALS) and transthyretinopathies. In yeast and fungi, amyloid-based prions control phenotypically detectable heritable traits. Simplicity of cultivation requirements and availability of powerful genetic approaches makes yeast Saccharomyces cerevisiae an excellent model system for studying molecular and cellular mechanisms governing amyloid formation and propagation. Genetic techniques allowing for the expression of mammalian or human amyloidogenic and prionogenic proteins in yeast enable researchers to capitalize on yeast advantages for characterization of the properties of disease-related proteins. Chimeric constructs employing mammalian and human aggregation-prone proteins or domains, fused to fluorophores or to endogenous yeast proteins allow for cytological or phenotypic detection of disease-related protein aggregation in yeast cells. Yeast systems are amenable to high-throughput screening for antagonists of amyloid formation, propagation and/or toxicity. This review summarizes up to date achievements of yeast assays in application to studying mammalian and human disease-related aggregating proteins, and discusses both limitations and further perspectives of yeast-based strategies.
Collapse
Affiliation(s)
- Yury O Chernoff
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, United States; Laboratory of Amyloid Biology, St. Petersburg State University, St. Petersburg, Russia.
| | - Anastasia V Grizel
- Laboratory of Amyloid Biology, St. Petersburg State University, St. Petersburg, Russia
| | - Aleksandr A Rubel
- Laboratory of Amyloid Biology, St. Petersburg State University, St. Petersburg, Russia; Department of Genetics and Biotechnology, St. Petersburg State University, St. Petersburg, Russia; Sirius University of Science and Technology, Sochi, Russia
| | - Andrew A Zelinsky
- Laboratory of Amyloid Biology, St. Petersburg State University, St. Petersburg, Russia
| | | | - Tatiana A Chernova
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, United States
| |
Collapse
|
31
|
Rajasekhar K, Samanta S, Bagoband V, Murugan NA, Govindaraju T. Antioxidant Berberine-Derivative Inhibits Multifaceted Amyloid Toxicity. iScience 2020; 23:101005. [PMID: 32272441 PMCID: PMC7138924 DOI: 10.1016/j.isci.2020.101005] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/22/2020] [Accepted: 03/18/2020] [Indexed: 12/21/2022] Open
Abstract
Multiple lines of evidence indicate that amyloid beta (Aβ) peptide is responsible for the pathological devastation caused in Alzheimer's disease (AD). Aβ aggregation species predominantly contribute to multifaceted toxicity observed in neuronal cells including generation of reactive oxygen species (ROS), mitochondrial dysfunction, interfering with synaptic signaling, and activation of premature apoptosis. Herein, we report a natural product berberine-derived (Ber-D) multifunctional inhibitor to ameliorate in cellulo multifaceted toxicity of AD. The structural attributes of polyphenolic Ber-D have contributed to its efficient Cu chelation and arresting the redox cycle to prevent the generation of ROS and rescue biomacromolecules from oxidative damage. Ber-D inhibits metal-dependent and -independent Aβ aggregation, which is supported by in silico studies. Ber-D treatment averts mitochondrial dysfunction and corresponding neuronal toxicity contributing to premature apoptosis. These key multifunctional attributes make Ber-D a potential therapeutic candidate to ameliorate multifaceted Aβ toxicity in AD.
Collapse
Affiliation(s)
- Kolla Rajasekhar
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, 560064 Karnataka, India
| | - Sourav Samanta
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, 560064 Karnataka, India
| | - Vardhaman Bagoband
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, 560064 Karnataka, India
| | - N Arul Murugan
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru, 560064 Karnataka, India.
| |
Collapse
|
32
|
Liu F, Zhao F, Wang W, Sang J, Jia L, Li L, Lu F. Cyanidin-3-O-glucoside inhibits Aβ40 fibrillogenesis, disintegrates preformed fibrils, and reduces amyloid cytotoxicity. Food Funct 2020; 11:2573-2587. [PMID: 32154523 DOI: 10.1039/c9fo00316a] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Alzheimer's disease (AD) is mainly caused by the fibrillogenesis of amyloid-β protein (Aβ). Therefore, the development of effective inhibitors against Aβ fibrillogenesis offers great hope for the treatment of AD. Cyanidin-3-O-glucoside (Cy-3G) is a commonly found anthocyanin that is mainly present in fruits, with established neuroprotective effects in situ. However, it remains unknown if Cy-3G can prevent Aβ fibrillogenesis and alleviate the corresponding cytotoxicity. In this study, extensive biochemical, biophysical, biological and computational experiments were combined to address this issue. It was found that Cy-3G significantly inhibits Aβ40 fibrillogenesis and disintegrates mature Aβ fibrils, and its inhibitory capacity is dependent on the Cy-3G concentration. The circular dichroism results showed that Cy-3G and Aβ40 at a molar ratio of 3 : 1 slightly prevents the structural transformation of Aβ40 from its initial random coil to the β-sheet-rich structure. Co-incubation of Aβ40 with Cy-3G significantly reduced the production of intracellular reactive oxygen species induced by Aβ40 fibrillogenesis and thus reduced Aβ40-induced cytotoxicity. Molecular dynamics simulations revealed that Cy-3G disrupted the β-sheet structure of the Aβ40 trimer. Cy-3G was found to mainly interact with the N-terminal region, the central hydrophobic cluster and the β-sheet region II via hydrophobic and electrostatic interactions. The ten hot spot residues D7, Y10, E11, F19, F20, E22, I31, I32, M35 and V40 were also identified. These findings not only enable a comprehensive understanding of the inhibitory effect of Cy-3G on Aβ40 fibrillogenesis, but also allow the identification of a valuable dietary ingredient that possesses great potential to be developed into functional foods to alleviate AD.
Collapse
Affiliation(s)
- Fufeng Liu
- Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, Tianjin, 300457, P. R. China.
| | | | | | | | | | | | | |
Collapse
|
33
|
Ammanathan V, Vats S, Abraham IM, Manjithaya R. Xenophagy in cancer. Semin Cancer Biol 2020; 66:163-170. [PMID: 32126260 DOI: 10.1016/j.semcancer.2020.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 02/17/2020] [Indexed: 12/24/2022]
Abstract
Macroautophagy (herein autophagy) is an intracellular pathway in which cytoplasmic components are captured by double-membrane vesicles (autophagosomes) that eventually fuse with lysosomes to degrade the cargo. Basal levels of autophagy in all eukaryotic cells maintain cellular homeostasis and under conditions of stress, organelles and proteins not essential for survival are degraded. Apart from these functions, cargoes like aggregated proteins, damaged organelles and intracellular pathogens, which are otherwise harmful to cells, are also selectively captured by autophagy and are destined for degradation. In terms of infectious diseases, pathogens are cleared by a specific form of autophagy known as xenophagy. This lysosomal mediated degradation of pathogens also increases the antigen presentation of cells thereby inducing a further immune response. The process of xenophagy provides a broad spectrum of defense mechanism to capture bacterial, viral and protozoan pathogens. However, pathogens have developed ingenious mechanisms to modulate xenophagy to enhance their intracellular survival. Meanwhile, certain pathogens also induce deleterious effects such as chronic inflammation and overexpression of oncogenes in the host system. This over time can increase the susceptibility of the host for tumorigenesis. Hence targeting tumor through anti-microbial mechanisms like xenophagy could be a novel strategy for combinatorial anti-cancer therapy. The recent developments in understanding the role of xenophagy in combating cancer causing pathogens will be discussed in this review.
Collapse
Affiliation(s)
- Veena Ammanathan
- Jawaharlal Nehru Centre for Advanced Scientific Research, 560064, Bangalore, India
| | - Somya Vats
- Jawaharlal Nehru Centre for Advanced Scientific Research, 560064, Bangalore, India
| | - Irine Maria Abraham
- Jawaharlal Nehru Centre for Advanced Scientific Research, 560064, Bangalore, India
| | - Ravi Manjithaya
- Jawaharlal Nehru Centre for Advanced Scientific Research, 560064, Bangalore, India
| |
Collapse
|
34
|
Datta LP, Manchineella S, Govindaraju T. Biomolecules-derived biomaterials. Biomaterials 2020; 230:119633. [DOI: 10.1016/j.biomaterials.2019.119633] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 11/12/2019] [Accepted: 11/14/2019] [Indexed: 12/22/2022]
|
35
|
Prajapati KP, Singh AP, Dubey K, Ansari M, Temgire M, Anand BG, Kar K. Myricetin inhibits amyloid fibril formation of globular proteins by stabilizing the native structures. Colloids Surf B Biointerfaces 2020; 186:110640. [DOI: 10.1016/j.colsurfb.2019.110640] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 09/19/2019] [Accepted: 11/10/2019] [Indexed: 02/06/2023]
|
36
|
Kuang H, Tan C, Tian H, Liu L, Yang M, Hong F, Yang S. Exploring the bi-directional relationship between autophagy and Alzheimer's disease. CNS Neurosci Ther 2020; 26:155-166. [PMID: 31503421 PMCID: PMC6978262 DOI: 10.1111/cns.13216] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/11/2019] [Accepted: 08/15/2019] [Indexed: 02/06/2023] Open
Abstract
Alzheimer's disease (AD) is characterized by β-amyloid (Aβ) deposition and Tau phosphorylation, in which its pathogenesis has not been cleared so far. The metabolism of Aβ and Tau is critically affected by the autophagy. Abnormal autophagy is thought to be involved in the pathogenesis of AD, regulating autophagy may become a new strategy for AD treatment. In the early stage of AD, the presence of Aβ and Tau can induce autophagy to promote their clearance by means of mTOR-dependent and independent manners. As AD progress, the autophagy goes aberrant. As a result, Aβ and Tau generate continually, which aggravates both autophagy dysfunction and AD. Besides, several related genes and proteins of AD can also adapt autophagy to make an effect on the AD development. There seems to be a bi-directional relationship between AD pathology and autophagy. At present, this article reviews this relationship from these aspects: (a) the signaling pathways of regulating autophagy; (b) the relationships between the autophagy and the processing of Aβ; (c) Aβ and Tau cause autophagy dysfunction; (d) normal autophagy promotes the clearance of Aβ and Tau; (e) the relationships between the autophagy and both genes and proteins related to AD: TFEB, miRNAs, Beclin-1, Presenilin, and Nrf2; and (f) the small molecules regulating autophagy on AD therapy. All of the above may help to further elucidate the pathogenesis of AD and provide a theoretical basis for clinical treatment of AD.
Collapse
Affiliation(s)
- Huang Kuang
- Department of Physiology, College of MedicineNanchang UniversityNanchangChina
| | - Cheng‐Yong Tan
- Department of Physiology, College of MedicineNanchang UniversityNanchangChina
| | - Hui‐Zhen Tian
- Department of Physiology, College of MedicineNanchang UniversityNanchangChina
| | - Li‐Hua Liu
- Department of Physiology, College of MedicineNanchang UniversityNanchangChina
| | - Mei‐Wen Yang
- Department of NurseNanchang University HospitalNanchangChina
| | - Fen‐Fang Hong
- Department of Experimental Teaching CenterNanchang UniversityNanchangChina
| | - Shu‐Long Yang
- Department of Physiology, College of MedicineNanchang UniversityNanchangChina
| |
Collapse
|
37
|
Ramesh M, Gopinath P, Govindaraju T. Role of Post-translational Modifications in Alzheimer's Disease. Chembiochem 2020; 21:1052-1079. [PMID: 31863723 DOI: 10.1002/cbic.201900573] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/19/2019] [Indexed: 12/22/2022]
Abstract
The global burden of Alzheimer's disease (AD) is growing. Valiant efforts to develop clinical candidates for treatment have continuously met with failure. Currently available palliative treatments are temporary and there is a constant need to search for reliable disease pathways, biomarkers and drug targets for developing diagnostic and therapeutic tools to address the unmet medical needs of AD. Challenges in drug-discovery efforts raise further questions about the strategies of current conventional diagnosis; drug design; and understanding of disease pathways, biomarkers and targets. In this context, post-translational modifications (PTMs) regulate protein trafficking, function and degradation, and their in-depth study plays a significant role in the identification of novel biomarkers and drug targets. Aberrant PTMs of disease-relevant proteins could trigger pathological pathways, leading to disease progression. Advancements in proteomics enable the generation of patterns or signatures of such modifications, and thus, provide a versatile platform to develop biomarkers based on PTMs. In addition, understanding and targeting the aberrant PTMs of various proteins provide viable avenues for addressing AD drug-discovery challenges. This review highlights numerous PTMs of proteins relevant to AD and provides an overview of their adverse effects on the protein structure, function and aggregation propensity that contribute to the disease pathology. A critical discussion offers suggestions of methods to develop PTM signatures and interfere with aberrant PTMs to develop viable diagnostic and therapeutic interventions in AD.
Collapse
Affiliation(s)
- Madhu Ramesh
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, 560064, Karnataka, India
| | - Pushparathinam Gopinath
- Department of Chemistry, SRM-Institute of Science and Technology, Kattankulathur, 603203, Chennai, Tamilnadu, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bengaluru, 560064, Karnataka, India
| |
Collapse
|
38
|
Khalili Samani E, Mofid MR, Malakoutikhah M. The effect of terminal groups and halogenation of KLVFF peptide on its activity as an inhibitor of β-amyloid aggregation. J Pept Sci 2019; 26:e3227. [PMID: 31845472 DOI: 10.1002/psc.3227] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 09/29/2019] [Accepted: 10/07/2019] [Indexed: 01/24/2023]
Abstract
The aggregation of Aβ peptide into amyloid fibrils in the brain is associated with Alzheimer's disease (AD). Inhibition of Aβ aggregation seemed a potential treatment for AD. It was previously shown that a short fragment of Aβ peptide (KLVFF, 16-20) bound Aβ inhibited its aggregation. In this work, using KLVFF peptide, we synthesized two peptide families and then evaluated their inhibitory capacities by conventional assays such as thioflavin T (ThT) fluorescence spectroscopy, turbidity measurement, and the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS). The effect of peptide terminal groups on its inhibitory activity was first studied. Subsequently, the influence of halogenated amino acids on peptide anti-aggregation properties was investigated. We found that iodinated peptide with amine in the N and amide in the C termini, respectively, was the best inhibitor of Aβ fibers formation. Halogenated peptides seemed to decrease the number of Aβ fibrils; however, they did not reduce Aβ cytotoxicity. The data obtained in this work seemed promising in developing potential peptide drugs for treatment of AD.
Collapse
Affiliation(s)
| | - Mohammad Reza Mofid
- Department of Clinical Biochemistry School of Pharmacy and Pharmaceutical Sciences, and Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | | |
Collapse
|
39
|
Jia L, Zhao W, Sang J, Wang W, Wei W, Wang Y, Zhao F, Lu F, Liu F. Inhibitory Effect of a Flavonoid Dihydromyricetin against Aβ40 Amyloidogenesis and Its Associated Cytotoxicity. ACS Chem Neurosci 2019; 10:4696-4703. [PMID: 31596069 DOI: 10.1021/acschemneuro.9b00480] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Misfolding and fibrillogenesis of amyloid-β protein (Aβ) play a key role in the onset and progression of Alzheimer's disease (AD). Screening for inhibitors against Aβ amyloidogenesis is helpful for rational designing and developing new anti-AD drugs and therapeutic strategies. Dihydromyricetin, a natural flavonoid extracted from a Chinese herb, Ampelopsis grossedentata, has been proven with antioxidative, anti-inflammatory, and neuroprotective effects against neurodegenerative disease. Herein, we found that dihydromyricetin could inhibit Aβ40 aggregation, impede the protofibril formation, disassemble preformed Aβ40 fibrils, and protect PC12 cells from the Aβ40-induced cytotoxicity using a series of biochemical and biophysical assays, including thioflavin T fluorescence, atomic force microscopy, and cell toxicity assays. Circular dichroism spectroscopy data proved that dihydromyricetin delayed the Aβ40 conformational conversion. In addition, the results of molecular dynamics simulations indicated that the interaction between dihydromyricetin and Aβ40 trimer is mainly nonpolar interactions. Key residues (i.e., V18, A21, and D23) of the Aβ40 interacting with dihydromyricetin were also identified. This study suggested that dihydromyricetin shows great potential to be developed as a novel Aβ40 inhibitor.
Collapse
Affiliation(s)
- Longgang Jia
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, P. R. China
- Tianjin Key Laboratory of Industrial Microbiology, Tianjin 300457, P. R. China
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
- College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Wenping Zhao
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Jingcheng Sang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Wenjuan Wang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Wei Wei
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Ying Wang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Fang Zhao
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, P. R. China
- Tianjin Key Laboratory of Industrial Microbiology, Tianjin 300457, P. R. China
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Fufeng Liu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, P. R. China
- Tianjin Key Laboratory of Industrial Microbiology, Tianjin 300457, P. R. China
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| |
Collapse
|
40
|
Sn S, Pandurangi J, Murumalla R, Dj V, Garimella L, Acharya A, Rai S, Paul A, Yarreiphang H, Pillai MS, Giridharan M, Clement JP, Alladi PA, Saiyed T, Manjithaya R. Small molecule modulator of aggrephagy regulates neuroinflammation to curb pathogenesis of neurodegeneration. EBioMedicine 2019; 50:260-273. [PMID: 31727601 PMCID: PMC6921191 DOI: 10.1016/j.ebiom.2019.10.036] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 10/13/2019] [Accepted: 10/20/2019] [Indexed: 12/16/2022] Open
Abstract
Background Plethora of efforts fails to yield a single drug to reverse the pathogenesis of Parkinson's disease (PD) and related α-synucleopathies. Methods Using chemical biology, we identified a small molecule inhibitor of c-abl kinase, PD180970 that could potentially clear the toxic protein aggregates. Genetic, molecular, cell biological and immunological assays were performed to understand the mechanism of action. In vivo preclinical disease model of PD was used to assess its neuroprotection efficacy. Findings In this report, we show the ability of a small molecule inhibitor of tyrosine kinases, PD180970, to induce autophagy (cell lines and mice midbrain) in an mTOR-independent manner and ameliorate the α-synuclein mediated toxicity. PD180970 also exerts anti-neuroinflammatory potential by inhibiting the release of proinflammatory cytokines such as IL-6 (interleukin-6) and MCP-1 (monocyte chemoattractant protein-1) through reduction of TLR-4 (toll like receptor-4) mediated NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) activation. In vivo studies show that PD180970 is neuroprotective by degrading the toxic protein oligomers through induction of autophagy and subsiding the microglial activation. Interpretation These protective mechanisms ensure the negation of Parkinson's disease related motor impairments. Fund This work was supported by Wellcome Trust/DBT India Alliance Intermediate Fellowship (500159-Z-09-Z), DST-SERB grant (EMR/2015/001946), DBT (BT/INF/22/SP27679/2018) and JNCASR intramural funds to RM, and SERB, DST (SR/SO/HS/0121/2012) to PAA, and DST-SERB (SB/YS/LS-215/2013) to JPC and BIRAC funding to ETA C-CAMP.
Collapse
Affiliation(s)
- Suresh Sn
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India; Centre for Brain Research (CBR), IISc, Bangalore, India
| | - Janhavi Pandurangi
- Centre for Cellular and Molecular Platforms (C-CAMP), Bangalore Life Sciences Cluster (BLiSC), Tata Institute of Fundamental Research, Bangalore, India
| | - Ravi Murumalla
- Centre for Cellular and Molecular Platforms (C-CAMP), Bangalore Life Sciences Cluster (BLiSC), Tata Institute of Fundamental Research, Bangalore, India
| | - Vidyadhara Dj
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India; Yale University, USA
| | - Lakshmi Garimella
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Achyuth Acharya
- Centre for Cellular and Molecular Platforms (C-CAMP), Bangalore Life Sciences Cluster (BLiSC), Tata Institute of Fundamental Research, Bangalore, India
| | - Shashank Rai
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India; MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Abhik Paul
- Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Haorei Yarreiphang
- Department of Neurophysiology, National Institute of Mental Health and Neuro Sciences, Bangalore, India
| | - Malini S Pillai
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Mridhula Giridharan
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - James P Clement
- Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
| | - Phalguni Anand Alladi
- Department of Neurophysiology, National Institute of Mental Health and Neuro Sciences, Bangalore, India
| | - Taslimarif Saiyed
- Centre for Cellular and Molecular Platforms (C-CAMP), Bangalore Life Sciences Cluster (BLiSC), Tata Institute of Fundamental Research, Bangalore, India
| | - Ravi Manjithaya
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India; Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India.
| |
Collapse
|
41
|
Suresh SN, Manjithaya R. A small molecule autophagy inducer exerts cytoprotection against α-synuclein toxicity. Eur J Pharmacol 2019; 862:172635. [PMID: 31491404 DOI: 10.1016/j.ejphar.2019.172635] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 08/25/2019] [Accepted: 09/02/2019] [Indexed: 11/26/2022]
Abstract
α-synucleopathies are protein-misfolding disorders occur primarily due to aggregation and toxicity of α-synuclein. This study characterized the small molecule AGK2 as a modifier of α-synuclein mediated toxicity in an autophagy dependent manner in both yeast and mammalian cell line models. In yeast system, AGK2 enhances autophagy to clear toxic α-synuclein aggregates in an autophagy dependent manner. Autophagy flux analyses revealed that AGK2 induces autophagy especially autolysosomes. Importantly, AGK2 induces autophagy in an mTOR independent manner. These features enable AGK2 to exert cytoprotective potential against α-synuclein mediated toxicity in different model systems.
Collapse
Affiliation(s)
- S N Suresh
- Molecular Biology and Genetics Unit (MBGU), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India
| | - Ravi Manjithaya
- Molecular Biology and Genetics Unit (MBGU), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India; Neuroscience Unit (NSU), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bangalore, India.
| |
Collapse
|
42
|
Jiang X, Halmes AJ, Licari G, Smith JW, Song Y, Moore EG, Chen Q, Tajkhorshid E, Rienstra CM, Moore JS. Multivalent Polymer-Peptide Conjugates-A General Platform for Inhibiting Amyloid Beta Peptide Aggregation. ACS Macro Lett 2019; 8:1365-1371. [PMID: 32149017 PMCID: PMC7059649 DOI: 10.1021/acsmacrolett.9b00559] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Protein aggregation is implicated in multiple deposition diseases including Alzheimer's Disease, which features the formation of toxic aggregates of amyloid beta (Aβ) peptides. Many inhibitors have been developed to impede or reverse Aβ aggregation. Multivalent inhibitors, however, have been largely overlooked despite the promise of high inhibition efficiency endowed by the multivalent nature of Aβ aggregates. In this work, we report the success of multivalent polymer-peptide conjugates (mPPCs) as a general class of inhibitors of the aggregation of Aβ40. Significantly delayed onset of fibril formation was realized using mPPCs prepared from three peptide/peptoid ligands covering a range of polymer molecular weights (MWs) and ligand loadings. Dose dependence studies showed that the nature of the ligands is a key factor in mPPC inhibition potency. The negatively charged ligand LPFFD (LD) leads to more efficient mPPCs compared to the neutral ligands, and is most effective at 7% ligand loading across different MWs. Molecular dynamics simulations along with dynamic light scattering experiments suggest that mPPCs form globular structures in solution due to ligand-ligand interactions. Such interactions are key to the spatial proximity of ligands and thus to the multivalency effect of mPPC inhibition. Excess ligand-ligand interactions, however, reduce the accessibility of mPPC ligands to Aβ peptides, and impair the overall inhibition potency.
Collapse
Affiliation(s)
- Xing Jiang
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
| | - Abigail J Halmes
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Giuseppe Licari
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
| | - John W Smith
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Yang Song
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Edwin G Moore
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Qian Chen
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Emad Tajkhorshid
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Chad M Rienstra
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jeffrey S Moore
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| |
Collapse
|
43
|
Yeast Models for Amyloids and Prions: Environmental Modulation and Drug Discovery. Molecules 2019; 24:molecules24183388. [PMID: 31540362 PMCID: PMC6767215 DOI: 10.3390/molecules24183388] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/10/2019] [Accepted: 09/16/2019] [Indexed: 12/11/2022] Open
Abstract
Amyloids are self-perpetuating protein aggregates causing neurodegenerative diseases in mammals. Prions are transmissible protein isoforms (usually of amyloid nature). Prion features were recently reported for various proteins involved in amyloid and neural inclusion disorders. Heritable yeast prions share molecular properties (and in the case of polyglutamines, amino acid composition) with human disease-related amyloids. Fundamental protein quality control pathways, including chaperones, the ubiquitin proteasome system and autophagy are highly conserved between yeast and human cells. Crucial cellular proteins and conditions influencing amyloids and prions were uncovered in the yeast model. The treatments available for neurodegenerative amyloid-associated diseases are few and their efficiency is limited. Yeast models of amyloid-related neurodegenerative diseases have become powerful tools for high-throughput screening for chemical compounds and FDA-approved drugs that reduce aggregation and toxicity of amyloids. Although some environmental agents have been linked to certain amyloid diseases, the molecular basis of their action remains unclear. Environmental stresses trigger amyloid formation and loss, acting either via influencing intracellular concentrations of the amyloidogenic proteins or via heterologous inducers of prions. Studies of environmental and physiological regulation of yeast prions open new possibilities for pharmacological intervention and/or prophylactic procedures aiming on common cellular systems rather than the properties of specific amyloids.
Collapse
|
44
|
Samanta S, Rajasekhar K, Babagond V, Govindaraju T. Small Molecule Inhibits Metal-Dependent and -Independent Multifaceted Toxicity of Alzheimer's Disease. ACS Chem Neurosci 2019; 10:3611-3621. [PMID: 31140779 DOI: 10.1021/acschemneuro.9b00216] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Alzheimer's disease (AD) is one of the most devastating forms of dementia, without reliable treatments to cure, delay the onset, or prevent the disease progression. The proposed toxic mechanisms of AD include amyloidogenesis of amyloid β (Aβ), metal ion dyshomeostasis, redox active metal-Aβ inclusion complex formation, and generation of excessive reactive oxygen and nitrogen species (ROS and RNS). The imbalance in redox homeostasis causes oxidative stress, DNA damage, mitochondrial dysfunction, and inflammation, which collectively become a major hurdle in the development of effective therapeutic agents for multifactorial AD. This necessitates a multifunctional strategy to develop effective therapeutic agents to inhibit multifaceted toxicity. In this context, we report a rational design, synthesis, and detailed study to identify a small molecule multifunctional modulator (MFM) inspired by the human origin tripeptide. The lead, MFM 4, chelates and sequesters metal ions, disrupts their redox cycles, prevents excessive ROS production and oxidative stress, ameliorates oxidative DNA damage and mitochondrial dysfunction, and modulates Nrf2 protein signaling under oxidative stress conditions by eliminating the toxic stress elements. The MFM 4 was found to inhibit metal-dependent and -independent Aβ aggregation and qualified as a suitable candidate to inhibit Aβ-induced neuronal toxicity. The NMR spectroscopy study revealed molecular-level interactions of 4 with Aβ42, which explain the mechanism of aggregation inhibition. Furthermore, 4 effectively inhibited inflammation as revealed by reduction in nitric oxide (NO) production in LPS-activated glial cells. These key features make 4 a potential MFM platform to develop therapeutic agents for metal (Cu, Zn and Fe)-dependent and -independent multifaceted Aβ toxicity of AD.
Collapse
Affiliation(s)
- Sourav Samanta
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064 Karnataka, India
| | - Kolla Rajasekhar
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064 Karnataka, India
| | - Vardhaman Babagond
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064 Karnataka, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064 Karnataka, India
| |
Collapse
|
45
|
Pradhan K, Das G, Gupta V, Mondal P, Barman S, Khan J, Ghosh S. Discovery of Neuroregenerative Peptoid from Amphibian Neuropeptide That Inhibits Amyloid-β Toxicity and Crosses Blood-Brain Barrier. ACS Chem Neurosci 2019; 10:1355-1368. [PMID: 30408415 DOI: 10.1021/acschemneuro.8b00427] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Development of potential therapeutics for Alzheimer's disease (AD) requires a multifaceted strategy considering the high levels of complexity of the human brain and its mode of function. Here, we adopted an advanced strategy targeting two key pathological hallmarks of AD: senile plaques and neurofibrillary tangles. We derived a lead short tetrapeptide, Ser-Leu-Lys-Pro (SLKP), from a dodeca-neuropeptide of amphibian (frog) brain. Results suggested that the SLKP peptide had a superior effect compared to the dodecapeptide in neuroprotection. This result encouraged us to adopt peptidomimetic approach to synthesize an SLKP peptoid. Remarkably, we found that the SLKP peptoid is more potent than its peptide analogue, which significantly inhibits Aβ fibrillization, moderately binds with tubulin, and promotes tubulin polymerization as well as stabilization of microtubule networks. Further, we found that SLKP peptoid is stable in serum, shows significant neuroprotection against Aβ mediated toxicity, promotes significant neurite outgrowth, maintains healthy morphology of rat primary cortical neurons and crosses the blood-brain barrier (BBB). To the best of our knowledge, our SLKP peptoid is the first and shortest peptoid to show significant neuroprotection and neuroregeneration against Aβ toxicity, as well as to cross the BBB offering a potential lead for AD therapeutics.
Collapse
Affiliation(s)
- Krishnangsu Pradhan
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
| | - Gaurav Das
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Varsha Gupta
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
| | - Prasenjit Mondal
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Surajit Barman
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
| | - Juhee Khan
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Surajit Ghosh
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700032 West Bengal, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700032, India
| |
Collapse
|
46
|
Liu F, Wang W, Sang J, Jia L, Lu F. Hydroxylated Single-Walled Carbon Nanotubes Inhibit Aβ 42 Fibrillogenesis, Disaggregate Mature Fibrils, and Protect against Aβ 42-Induced Cytotoxicity. ACS Chem Neurosci 2019; 10:588-598. [PMID: 30335950 DOI: 10.1021/acschemneuro.8b00441] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The fibrillogenesis of amyloid-β protein (Aβ) is considered a crucial factor in the pathogenesis of Alzheimer's disease (AD). Hence, inhibiting Aβ fibrillogenesis is regarded as the primary therapeutic strategy for the prevention and treatment of AD. However, the development of effective inhibitors against Aβ fibrillogenesis has faced significant challenges. Previous studies have shown that pristine single-walled carbon nanotubes (SWNTs) can inhibit fibrillogenesis of some amyloid proteins. However, the poor dispersibility of SWNTs in an aqueous environment greatly hinders their inhibitory efficacy. Here, we examined the inhibitory activity of hydroxylated SWNTs (SWNT-OH) on the aggregation and cytotoxicity of Aβ42 using thioflavin T (ThT) fluorescence, atomic force microscopy (AFM), cellular viability assays, and molecular dynamics (MD) simulations. ThT and AFM results showed that SWNT-OH inhibits Aβ42 fibrillogenesis and disaggregates preformed amyloid fibrils in a dose-dependent manner. Furthermore, the ratio of hydroxyl groups in SWNT-OH is crucial for their effect against Aβ42 aggregation. SWNT-OH exerted cytoprotective effects against Aβ42 fibrillation-induced cytotoxicity. The results of free-energy decomposition studies based on MD simulations revealed that nonpolar interactions, and especially van der Waals forces, contributed most of the free energy of binding in the SWNT-OH-Aβ complex. Two regions of the Aβ pentamer were identified to interact with SWNT-OH, spanning H13-Q15 and V36-G38. The findings presented here will contribute to a comprehensive understanding of the inhibitory effect of hydroxylated nanoparticles against Aβ fibrillogenesis, which is critical for the search for more effective agents that can counteract amyloid-mediated pathologies.
Collapse
Affiliation(s)
- Fufeng Liu
- Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry
of Education, Tianjin, 300457, P. R. China
- Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China
- National Engineering Laboratory for Industrial Enzymes, Tianjin, 300457, P. R. China
| | - Wenjuan Wang
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China
| | - Jingcheng Sang
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China
| | - Longgang Jia
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China
| | - Fuping Lu
- Key Laboratory of Industrial Fermentation Microbiology, Tianjin University of Science & Technology, Ministry
of Education, Tianjin, 300457, P. R. China
- Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, P. R. China
- National Engineering Laboratory for Industrial Enzymes, Tianjin, 300457, P. R. China
| |
Collapse
|
47
|
Yang Y, Li S, Zhang Q, Kuang Y, Qin A, Gao M, Li F, Tang BZ. An AIE-active theranostic probe for light-up detection of Aβ aggregates and protection of neuronal cells. J Mater Chem B 2019; 7:2434-2441. [DOI: 10.1039/c9tb00121b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An AIE-active probe of Cur-N-BF2 is developed for light-up detection of Aβ fibrils and plaques, inhibition of Aβ fibrillation, disassembly of preformed Aβ fibrils, and protection of neuronal cells.
Collapse
Affiliation(s)
- Yaqi Yang
- Guangdong Provincial Key Laboratory of Brain Function and Disease
- Department of Neurobiology and Anatomy
- Zhongshan School of Medicine
- Sun Yat-sen University
- Guangzhou 510080
| | - Shiwu Li
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-Induced Emission
- Guangzhou International Campus
- South China University of Technology
- Guangzhou
| | - Qin Zhang
- Guangdong Provincial Key Laboratory of Brain Function and Disease
- Department of Neurobiology and Anatomy
- Zhongshan School of Medicine
- Sun Yat-sen University
- Guangzhou 510080
| | - Ying Kuang
- Guangdong Provincial Key Laboratory of Brain Function and Disease
- Department of Neurobiology and Anatomy
- Zhongshan School of Medicine
- Sun Yat-sen University
- Guangzhou 510080
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-Induced Emission
- Guangzhou International Campus
- South China University of Technology
- Guangzhou
| | - Meng Gao
- National Engineering Research Center for Tissue Restoration and Reconstruction
- South China University of Technology
- Guangzhou
- China
| | - Feng Li
- Guangdong Provincial Key Laboratory of Brain Function and Disease
- Department of Neurobiology and Anatomy
- Zhongshan School of Medicine
- Sun Yat-sen University
- Guangzhou 510080
| | - Ben Zhong Tang
- State Key Laboratory of Luminescent Materials and Devices
- Center for Aggregation-Induced Emission
- Guangzhou International Campus
- South China University of Technology
- Guangzhou
| |
Collapse
|
48
|
Savelieff MG, Nam G, Kang J, Lee HJ, Lee M, Lim MH. Development of Multifunctional Molecules as Potential Therapeutic Candidates for Alzheimer’s Disease, Parkinson’s Disease, and Amyotrophic Lateral Sclerosis in the Last Decade. Chem Rev 2018; 119:1221-1322. [DOI: 10.1021/acs.chemrev.8b00138] [Citation(s) in RCA: 270] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Masha G. Savelieff
- SciGency Science Communications, Ann Arbor, Michigan 48104, United States
| | - Geewoo Nam
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Juhye Kang
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hyuck Jin Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Misun Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| |
Collapse
|
49
|
|
50
|
Seynnaeve D, Vecchio MD, Fruhmann G, Verelst J, Cools M, Beckers J, Mulvihill DP, Winderickx J, Franssens V. Recent Insights on Alzheimer's Disease Originating from Yeast Models. Int J Mol Sci 2018; 19:E1947. [PMID: 29970827 PMCID: PMC6073265 DOI: 10.3390/ijms19071947] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 06/29/2018] [Accepted: 06/30/2018] [Indexed: 01/28/2023] Open
Abstract
In this review article, yeast model-based research advances regarding the role of Amyloid-β (Aβ), Tau and frameshift Ubiquitin UBB+1 in Alzheimer’s disease (AD) are discussed. Despite having limitations with regard to intercellular and cognitive AD aspects, these models have clearly shown their added value as complementary models for the study of the molecular aspects of these proteins, including their interplay with AD-related cellular processes such as mitochondrial dysfunction and altered proteostasis. Moreover, these yeast models have also shown their importance in translational research, e.g., in compound screenings and for AD diagnostics development. In addition to well-established Saccharomyces cerevisiae models, new upcoming Schizosaccharomyces pombe, Candida glabrata and Kluyveromyces lactis yeast models for Aβ and Tau are briefly described. Finally, traditional and more innovative research methodologies, e.g., for studying protein oligomerization/aggregation, are highlighted.
Collapse
Affiliation(s)
- David Seynnaeve
- Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3000 Leuven, Belgium.
| | - Mara Del Vecchio
- Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3000 Leuven, Belgium.
| | - Gernot Fruhmann
- Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3000 Leuven, Belgium.
| | - Joke Verelst
- Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3000 Leuven, Belgium.
| | - Melody Cools
- Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3000 Leuven, Belgium.
| | - Jimmy Beckers
- Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3000 Leuven, Belgium.
| | - Daniel P Mulvihill
- School of Biosciences, University of Kent, Canterbury CT2 7NJ, Kent, UK.
| | - Joris Winderickx
- Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3000 Leuven, Belgium.
| | - Vanessa Franssens
- Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3000 Leuven, Belgium.
| |
Collapse
|