1
|
Gonçalves PB, Sodero ACR, Cordeiro Y. Natural products targeting amyloid-β oligomer neurotoxicity in Alzheimer's disease. Eur J Med Chem 2024; 276:116684. [PMID: 39032401 DOI: 10.1016/j.ejmech.2024.116684] [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: 06/06/2024] [Revised: 07/07/2024] [Accepted: 07/12/2024] [Indexed: 07/23/2024]
Abstract
Alzheimer's disease (AD) constitutes a major global health issue, characterized by progressive neurodegeneration and cognitive impairment, for which no curative treatment is currently available. Current therapeutic approaches are focused on symptom management, highlighting the critical need for disease-modifying therapy. The hallmark pathology of AD involves the aggregation and accumulation of amyloid-β (Aβ) peptides in the brain. Consequently, drug discovery efforts in recent decades have centered on the Aβ aggregation cascade, which includes the transition of monomeric Aβ peptides into toxic oligomers and, ultimately, mature fibrils. Historically, anti-Aβ strategies focused on the clearance of amyloid fibrils using monoclonal antibodies. However, substantial evidence has highlighted the critical role of Aβ oligomers (AβOs) in AD pathogenesis. Soluble AβOs are now recognized as more toxic than fibrils, directly contributing to synaptic impairment, neuronal damage, and the onset of AD. Targeting AβOs has emerged as a promising therapeutic approach to mitigate cognitive decline in AD. Natural products (NPs) have demonstrated promise against AβO neurotoxicity through various mechanisms, including preventing AβO formation, enhancing clearance mechanisms, or converting AβOs into non-toxic species. Understanding the mechanisms by which anti-AβO NPs operate is useful for developing disease-modifying treatments for AD. In this review, we explore the role of NPs in mitigating AβO neurotoxicity for AD drug discovery, summarizing key evidence from biophysical methods, cellular assays, and animal models. By discussing how NPs modulate AβO neurotoxicity across various experimental systems, we aim to provide valuable insights into novel therapeutic strategies targeting AβOs in AD.
Collapse
Affiliation(s)
| | | | - Yraima Cordeiro
- Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, 21949-900, Brazil
| |
Collapse
|
2
|
Xie S, Liang Y, Song Y, Li T, Jia J. Repurposing Anidulafungin for Alzheimer's Disease via Fragment-Based Drug Discovery. ACS Chem Neurosci 2024; 15:2995-3008. [PMID: 39096284 PMCID: PMC11342299 DOI: 10.1021/acschemneuro.4c00150] [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: 03/15/2024] [Revised: 06/19/2024] [Accepted: 07/29/2024] [Indexed: 08/05/2024] Open
Abstract
The misfolding and aggregation of beta-amyloid (Aβ) peptides have been implicated as key pathogenic events in the early stages of Alzheimer's disease (AD). Inhibiting Aβ aggregation represents a potential disease-modifying therapeutic approach to AD treatment. Previous studies have identified various molecules that inhibit Aβ aggregation, some of which share common chemical substructures (fragments) that may be key to their inhibitory activity. Employing fragment-based drug discovery (FBDD) methods may facilitate the identification of these fragments, which can subsequently be used to screen new inhibitors and provide leads for further drug development. In this study, we used an in silico FBDD approach to identify 17 fragment clusters that are significantly enriched among Aβ aggregation inhibitors. These fragments were then used to screen anti-infective agents, a promising drug class for repurposing against amyloid aggregation. This screening process identified 16 anti-infective drugs, 5 of which were chosen for further investigation. Among the 5 candidates, anidulafungin, an antifungal compound, showed high efficacy in inhibiting Aβ aggregation in vitro. Kinetic analysis revealed that anidulafungin selectively blocks the primary nucleation step of Aβ aggregation, substantially delaying Aβ fibril formation. Cell viability assays demonstrated that anidulafungin can reduce the toxicity of oligomeric Aβ on BV2 microglia cells. Molecular docking simulations predicted that anidulafungin interacted with various Aβ species, including monomers, oligomers, and fibrils, potentially explaining its activity against Aβ aggregation and toxicity. This study suggests that anidulafungin is a potential drug to be repurposed for AD, and FBDD is a promising approach for discovering drugs to combat Aβ aggregation.
Collapse
Affiliation(s)
- Siqi Xie
- Innovation
Center for Neurological Disorders and Department of Neurology, Xuanwu
Hospital, Capital Medical University, National
Clinical Research Center for Geriatric Diseases, Beijing 100053, P. R. China
| | - Yumei Liang
- Innovation
Center for Neurological Disorders and Department of Neurology, Xuanwu
Hospital, Capital Medical University, National
Clinical Research Center for Geriatric Diseases, Beijing 100053, P. R. China
| | - Yang Song
- Innovation
Center for Neurological Disorders and Department of Neurology, Xuanwu
Hospital, Capital Medical University, National
Clinical Research Center for Geriatric Diseases, Beijing 100053, P. R. China
| | - Tingting Li
- Innovation
Center for Neurological Disorders and Department of Neurology, Xuanwu
Hospital, Capital Medical University, National
Clinical Research Center for Geriatric Diseases, Beijing 100053, P. R. China
| | - Jianping Jia
- Innovation
Center for Neurological Disorders and Department of Neurology, Xuanwu
Hospital, Capital Medical University, National
Clinical Research Center for Geriatric Diseases, Beijing 100053, P. R. China
- Beijing
Key Laboratory of Geriatric Cognitive Disorders, Beijing 100053, P. R. China
- Clinical
Center for Neurodegenerative Disease and Memory Impairment, Capital Medical University, Beijing 100053, P. R. China
- Center
of Alzheimer’s Disease, Beijing Institute of Brain Disorders,
Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing 100053, P. R. China
- Key
Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing 100053, P. R. China
| |
Collapse
|
3
|
Long T, Chen X, Qin DL, Zhu YF, Zhou YJ, He YN, Fu HJ, Tang Y, Yu L, Huang FH, Wang L, Yu CL, Law BYK, Wu JM, Wu AG, Zhou XG. Ameliorative effect of Luffa cylindrica fruits on Caenorhabditis elegans and cellular models of Alzheimer's disease-related pathology via autophagy induction. Phytother Res 2023; 37:4639-4654. [PMID: 37394882 DOI: 10.1002/ptr.7931] [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: 02/27/2023] [Revised: 06/03/2023] [Accepted: 06/16/2023] [Indexed: 07/04/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) is a prevalent neurodegenerative disorder without an effective cure. Natural products, while showing promise as potential therapeutics for AD, remain underexplored. AIMS This study was conducted with the goal of identifying potential anti-AD candidates from natural sources using Caenorhabditis elegans (C. elegans) AD-like models and exploring their mechanisms of action. MATERIALS & METHODS Our laboratory's in-house herbal extract library was utilized to screen for potential anti-AD candidates using the C. elegans AD-like model CL4176. The neuroprotective effects of the candidates were evaluated in multiple C. elegans AD-like models, specifically targeting Aβ- and Tau-induced pathology. In vitro validation was conducted using PC-12 cells. To investigate the role of autophagy in mediating the anti-AD effects of the candidates, RNAi bacteria and autophagy inhibitors were employed. RESULTS The ethanol extract of air-dried fruits of Luffa cylindrica (LCE), a medicine-food homology species, was found to inhibit Aβ- and Tau-induced pathology (paralysis, ROS production, neurotoxicity, and Aβ and pTau deposition) in C. elegans AD-like models. LCE was non-toxic and enhanced C. elegans' health. It was shown that LCE activates autophagy and its anti-AD efficacy is weakened with the RNAi knockdown of autophagy-related genes. Additionally, LCE induced mTOR-mediated autophagy, reduced the expression of AD-associated proteins, and decreased cell death in PC-12 cells, which was reversed by autophagy inhibitors (bafilomycin A1 and 3-methyladenine). DISCUSSION LCE, identified from our natural product library, emerged as a valuable autophagy enhancer that effectively protects against neurodegeneration in multiple AD-like models. RNAi knockdown of autophagy-related genes and cotreatment with autophagy inhibitors weakened its anti-AD efficacy, implying a critical role of autophagy in mediating the neuroprotective effects of LCE. CONCLUSION Our findings highlight the potential of LCE as a functional food or drug for targeting AD pathology and promoting human health.
Collapse
Grants
- 81903829 National Natural Science Foundation of China
- 81801398 National Natural Science Foundation of China
- 2022YFS0620 The Science and Technology Planning Project of Sichuan Province, China
- 2020YJ0494 The Science and Technology Planning Project of Sichuan Province, China
- 2021YJ0180 The Science and Technology Planning Project of Sichuan Province, China
- 2020LZXNYDJ37 The Joint Project of Luzhou Municipal People's Government and Southwest Medical University, China
- 20YKDYYJC0067 The Joint Project of Luzhou Municipal People's Government and Southwest Medical University, China
- 2019ZQN174 The project of Southwest Medical University, China
- 2021ZKZD018 The project of Southwest Medical University, China
- 2021ZKMS046 The project of Southwest Medical University, China
- 2020ZRZD015 The project of Southwest Medical University, China
- 2021ZKZD015 The project of Southwest Medical University, China
- MUST-SKL-2021-005 The Macao Science and Technology Development Fund of Macao SAR
- SKL-QRCM (MUST)-2020-2022 The Macao Science and Technology Development Fund of Macao SAR
- 81903829 the National Natural Science Foundation of China
- 81801398 the National Natural Science Foundation of China
Collapse
Affiliation(s)
- Tao Long
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, China
| | - Xue Chen
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, China
| | - Da-Lian Qin
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Yun-Fei Zhu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, China
| | - Yu-Jia Zhou
- College of Integrated Traditional Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Yan-Ni He
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, China
| | - Hai-Jun Fu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, China
| | - Yong Tang
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Lu Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Fei-Hong Huang
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Long Wang
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Chong-Lin Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Betty Yuen-Kwan Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Jian-Ming Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - An-Guo Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Xiao-Gang Zhou
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan, China
| |
Collapse
|
4
|
Kleawyothatis W, Jattujan P, Chumphoochai K, Chalorak P, Sobhon P, Meemon K. Holothuria scabra extracts confer neuroprotective effect in C. elegans model of Alzheimer's disease by attenuating amyloid-β aggregation and toxicity. J Tradit Complement Med 2023; 13:93-104. [PMID: 36685078 PMCID: PMC9845652 DOI: 10.1016/j.jtcme.2022.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 10/08/2022] [Accepted: 10/31/2022] [Indexed: 11/15/2022] Open
Abstract
Background and aim Alzheimer's disease (AD) is the most common aged-related neurodegenerative disorder that is associated with the toxic amyloid-β (Aβ) aggregation in the brain. While the efficacies of available drugs against AD are still limited, natural products have been shown to possess neuroprotective potential for prevention and therapy of AD. This study aimed to investigate the neuroprotective effects of H. scabra extracts against Aβ aggregation and proteotoxicity in C. elegans model of Alzheimer's diseases. Experimental procedure Whole bodies (WB) and body wall (BW) of H. scabra were extracted and fractionated into ethyl acetate (WBEA, BWEA), butanol (WBBU, BWBU), and ethanol (BWET). Then C. elegans AD models were treated with these fractions and investigated for Aβ aggregation and polymerization, biochemical and behavioral changes, and level of oxidative stress, as well as lifespan extension. Results and conclusion C. elegans AD model treated with H. scabra extracts, especially triterpene glycoside-rich ethyl acetate and butanol fractions, exhibited significant reduction of Aβ deposition. These H. scabra extracts also attenuated the paralysis behavior and improved the neurological defects in chemotaxis caused by Aβ aggregation. Immunoblot analysis revealed decreased level of Aβ oligomeric forms and the increased level of Aβ monomers after treatments with H. scabra extracts. In addition, H. scabra extracts reduced reactive oxygen species and increased the mean lifespan of the treated AD worms. In conclusion, this study demonstrated strong evidence of anti-Alzheimer effects by H. scabra extracts, implying that these extracts can potentially be applied as natural preventive and therapeutic agents for AD. Taxonomy classification by EVISE Alzheimer's disease, Neurodegenerative disorder, Traditional medicine, Experimental model systems, Molecular biology.
Collapse
Affiliation(s)
- Warannida Kleawyothatis
- Department of Anatomy, Faculty of Science, Mahidol University, Ratchathewi, Bangkok, 10400, Thailand
| | - Prapaporn Jattujan
- Department of Anatomy, Faculty of Science, Mahidol University, Ratchathewi, Bangkok, 10400, Thailand
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Kawita Chumphoochai
- Department of Anatomy, Faculty of Science, Mahidol University, Ratchathewi, Bangkok, 10400, Thailand
| | - Pawanrat Chalorak
- Department of Anatomy, Faculty of Science, Mahidol University, Ratchathewi, Bangkok, 10400, Thailand
- Department of Radiological Technology and Medical Physics, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Prasert Sobhon
- Department of Anatomy, Faculty of Science, Mahidol University, Ratchathewi, Bangkok, 10400, Thailand
| | - Krai Meemon
- Department of Anatomy, Faculty of Science, Mahidol University, Ratchathewi, Bangkok, 10400, Thailand
- Center for Neuroscience, Faculty of Science, Mahidol University, Ratchathewi, Bangkok, 10400, Thailand
| |
Collapse
|
5
|
Kabir ER, Chowdhury NM, Yasmin H, Kabir MT, Akter R, Perveen A, Ashraf GM, Akter S, Rahman MH, Sweilam SH. Unveiling the Potential of Polyphenols as Anti-Amyloid Molecules in Alzheimer's Disease. Curr Neuropharmacol 2023; 21:787-807. [PMID: 36221865 PMCID: PMC10227919 DOI: 10.2174/1570159x20666221010113812] [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: 02/23/2022] [Revised: 08/03/2022] [Accepted: 08/15/2022] [Indexed: 11/22/2022] Open
Abstract
Alzheimer's disease (AD) is a devastating neurodegenerative disease that mostly affects the elderly population. Mechanisms underlying AD pathogenesis are yet to be fully revealed, but there are several hypotheses regarding AD. Even though free radicals and inflammation are likely to be linked with AD pathogenesis, still amyloid-beta (Aβ) cascade is the dominant hypothesis. According to the Aβ hypothesis, a progressive buildup of extracellular and intracellular Aβ aggregates has a significant contribution to the AD-linked neurodegeneration process. Since Aβ plays an important role in the etiology of AD, therefore Aβ-linked pathways are mainly targeted in order to develop potential AD therapies. Accumulation of Aβ plaques in the brains of AD individuals is an important hallmark of AD. These plaques are mainly composed of Aβ (a peptide of 39-42 amino acids) aggregates produced via the proteolytic cleavage of the amyloid precursor protein. Numerous studies have demonstrated that various polyphenols (PPHs), including cyanidins, anthocyanins, curcumin, catechins and their gallate esters were found to markedly suppress Aβ aggregation and prevent the formation of Aβ oligomers and toxicity, which is further suggesting that these PPHs might be regarded as effective therapeutic agents for the AD treatment. This review summarizes the roles of Aβ in AD pathogenesis, the Aβ aggregation pathway, types of PPHs, and distribution of PPHs in dietary sources. Furthermore, we have predominantly focused on the potential of food-derived PPHs as putative anti-amyloid drugs.
Collapse
Affiliation(s)
- Eva Rahman Kabir
- School of Pharmacy, BRAC University, 66 Mohakhali, Dhaka 1212, Bangladesh
| | | | - Hasina Yasmin
- School of Pharmacy, BRAC University, 66 Mohakhali, Dhaka 1212, Bangladesh
| | - Md. Tanvir Kabir
- School of Pharmacy, BRAC University, 66 Mohakhali, Dhaka 1212, Bangladesh
| | - Rokeya Akter
- Department of Pharmacy, Jagannath University, Dhaka, Bangladesh
| | - Asma Perveen
- Glocal School of Life Sciences, Glocal University, Mirzapur Pole, Saharanpur, Uttar Pradesh, India
| | - Ghulam Md. Ashraf
- Department of Medical Laboratory Sciences, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Shamima Akter
- Department of Bioinformatics and Computational Biology, George Mason University, Fairfax, Virginia 22030, USA
| | | | - Sherouk Hussein Sweilam
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Egyptian Russian University, Cairo-Suez Road, Badr City 11829, Egypt
| |
Collapse
|
6
|
Cryptotanshinone Alleviates Oxidative Stress and Reduces the Level of Abnormally Aggregated Protein in Caenorhabditis elegans AD Models. Int J Mol Sci 2022; 23:ijms231710030. [PMID: 36077432 PMCID: PMC9456502 DOI: 10.3390/ijms231710030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
Alzheimer's disease (AD) is one of the leading causes of dementia. As the first common neurodegenerative disease, there are no effective drugs that can reverse the progression. The present study is to report the anti-AD effect of cryptotanshinone (CTS), a natural product isolated from Salvia castanea. It is found that it can alleviate AD-like features associated with Aβ1-42 toxicity in muscle cells as well as neuronal cells of Caenorhabditis elegans (C. elegans). Further studies showed that CTS reduced the level of reactive oxygen species (ROS) in nematodes, up-regulated the expression of sod-3, and enhanced superoxide dismutase activity. Cryptotanshinone reduced the level of Aβ monomers and highly toxic oligomers in C. elegans while inhibiting the abnormal aggregation of polyglutamine protein. In addition, CTS upregulated the expression of hsp-16.2 and downregulated the expression of ace-2. These results suggested that CTS could alleviate oxidative stress and reduce the level of abnormally aggregated proteins and has the potential to be developed as an anti-AD drug candidate.
Collapse
|
7
|
Moreira P, Matos P, Figueirinha A, Salgueiro L, Batista MT, Branco PC, Cruz MT, Pereira CF. Forest Biomass as a Promising Source of Bioactive Essential Oil and Phenolic Compounds for Alzheimer's Disease Therapy. Int J Mol Sci 2022; 23:ijms23158812. [PMID: 35955963 PMCID: PMC9369093 DOI: 10.3390/ijms23158812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/04/2022] [Accepted: 08/06/2022] [Indexed: 11/24/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disorder affecting elderly people worldwide. Currently, there are no effective treatments for AD able to prevent disease progression, highlighting the urgency of finding new therapeutic strategies to stop or delay this pathology. Several plants exhibit potential as source of safe and multi-target new therapeutic molecules for AD treatment. Meanwhile, Eucalyptus globulus extracts revealed important pharmacological activities, namely antioxidant and anti-inflammatory properties, which can contribute to the reported neuroprotective effects. This review summarizes the chemical composition of essential oil (EO) and phenolic extracts obtained from Eucalyptus globulus leaves, disclosing major compounds and their effects on AD-relevant pathological features, including deposition of amyloid-β (Aβ) in senile plaques and hyperphosphorylated tau in neurofibrillary tangles (NFTs), abnormalities in GABAergic, cholinergic and glutamatergic neurotransmission, inflammation, and oxidative stress. In general, 1,8-cineole is the major compound identified in EO, and ellagic acid, quercetin, and rutin were described as main compounds in phenolic extracts from Eucalyptus globulus leaves. EO and phenolic extracts, and especially their major compounds, were found to prevent several pathological cellular processes and to improve cognitive function in AD animal models. Therefore, Eucalyptus globulus leaves are a relevant source of biological active and safe molecules that could be used as raw material for nutraceuticals and plant-based medicinal products useful for AD prevention and treatment.
Collapse
Affiliation(s)
- Patrícia Moreira
- CNC—Center for Neuroscience and Cell Biology, CIBB—Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3004-504 Coimbra, Portugal
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Patrícia Matos
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
- LAQV, REQUIMTE, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
- CIEPQPF, Research Center for Chemical Processes Engineering and Forest Products, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Artur Figueirinha
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
- LAQV, REQUIMTE, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
- CIEPQPF, Research Center for Chemical Processes Engineering and Forest Products, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Lígia Salgueiro
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
- CIEPQPF, Research Center for Chemical Processes Engineering and Forest Products, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Maria Teresa Batista
- CIEPQPF, Research Center for Chemical Processes Engineering and Forest Products, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | | | - Maria Teresa Cruz
- CNC—Center for Neuroscience and Cell Biology, CIBB—Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3004-504 Coimbra, Portugal
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Cláudia Fragão Pereira
- CNC—Center for Neuroscience and Cell Biology, CIBB—Center for Innovative Biomedicine and Biotechnology, University of Coimbra, 3004-504 Coimbra, Portugal
- Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
- Correspondence:
| |
Collapse
|
8
|
Navarro-Hortal MD, Romero-Márquez JM, Osta S, Jiménez-Trigo V, Muñoz-Ollero P, Varela-López A. Natural Bioactive Products and Alzheimer’s Disease Pathology: Lessons from Caenorhabditis elegans Transgenic Models. Diseases 2022; 10:diseases10020028. [PMID: 35645249 PMCID: PMC9149938 DOI: 10.3390/diseases10020028] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/28/2022] [Accepted: 05/04/2022] [Indexed: 02/04/2023] Open
Abstract
Alzheimer’s disease (AD) is an age-dependent, progressive disorder affecting millions of people. Currently, the therapeutics for AD only treat the symptoms. Although they have been used to discover new products of interest for this disease, mammalian models used to investigate the molecular determinants of this disease are often prohibitively expensive, time-consuming and very complex. On the other hand, cell cultures lack the organism complexity involved in AD. Given the highly conserved neurological pathways between mammals and invertebrates, Caenorhabditis elegans has emerged as a powerful tool for the investigation of the pathophysiology of human AD. Numerous models of both Tau- and Aβ-induced toxicity, the two prime components observed to correlate with AD pathology and the ease of performing RNA interference for any gene in the C. elegans genome, allow for the identification of multiple therapeutic targets. The effects of many natural products in main AD hallmarks using these models suggest promising health-promoting effects. However, the way in which they exert such effects is not entirely clear. One of the reasons is that various possible therapeutic targets have not been evaluated in many studies. The present review aims to explore shared therapeutical targets and the potential of each of them for AD treatment or prevention.
Collapse
|
9
|
Imamura T, Isozumi N, Higashimura Y, Koga H, Segawa T, Desaka N, Takagi H, Matsumoto K, Ohki S, Mori M. Red-Beet Betalain Pigments Inhibit Amyloid-β Aggregation and Toxicity in Amyloid-β Expressing Caenorhabditis elegans. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2022; 77:90-97. [PMID: 35088214 DOI: 10.1007/s11130-022-00951-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/16/2022] [Indexed: 06/14/2023]
Abstract
Betalain pigments are mainly produced by plants belonging to the order of Caryophyllales. Betalains exhibit strong antioxidant activity and responds to environmental stimuli and stress in plants. Recent reports of antioxidant, anti-inflammatory and anti-cancer properties of betalain pigments have piqued interest in understanding their biological functions. We investigated the effects of betalain pigments (betanin and isobetanin) derived from red-beet on amyloid-β (Aβ) aggregation, which causes Alzheimer's disease. Non-specific inhibition of Aβ aggregation against Aβ40 and Aβ42 by red-beet betalain pigments, in vitro was demonstrated using the thioflavin t fluorescence assay, circular dichroism spectroscopy analysis, transmission electron microscopy and nuclear magnetic resonance (NMR) analysis. Furthermore, we examined the ability of red-beet betalain pigments to interfere with Aβ toxicity by using the transgenic Caenorhabditis elegans model, which expresses the human Aβ42 protein intracellularly within the body wall muscle. It responds to Aβ-toxicity with paralysis and treatment with 50 μM red-beet betalain pigments significantly delayed the paralysis of C. elegans. These results suggest that betalain pigments reduce Aβ-induced toxicity.
Collapse
Affiliation(s)
- Tomohiro Imamura
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 308-1 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan.
| | - Noriyoshi Isozumi
- Center for Nano Materials and Technology (CNMT), Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Yasuki Higashimura
- Department of Food Science, Ishikawa Prefectural University, 308-1 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Hironori Koga
- Department of Bioproduction Science, Ishikawa Prefectural University, 308-1 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Tenta Segawa
- Department of Bioproduction Science, Ishikawa Prefectural University, 308-1 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Natsumi Desaka
- Department of Food Science, Ishikawa Prefectural University, 308-1 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Hiroki Takagi
- Department of Bioproduction Science, Ishikawa Prefectural University, 308-1 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Kenji Matsumoto
- Department of Food Science, Ishikawa Prefectural University, 308-1 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Shinya Ohki
- Center for Nano Materials and Technology (CNMT), Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Masashi Mori
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 308-1 Suematsu, Nonoichi, Ishikawa, 921-8836, Japan.
| |
Collapse
|
10
|
Turkez H, Arslan ME, Barboza JN, Kahraman CY, de Sousa DP, Mardinoğlu A. Therapeutic Potential of Ferulic Acid in Alzheimer's Disease. Curr Drug Deliv 2021; 19:860-873. [PMID: 34963433 DOI: 10.2174/1567201819666211228153801] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 08/16/2021] [Accepted: 10/27/2021] [Indexed: 11/22/2022]
Abstract
Alzheimer's Disease (AD) is one of the most important neurodegenerative diseases and it covers 60% of whole dementia cases. AD is a constantly progressing neurodegenerative disease as a result of the production of β-amyloid (Aβ) protein and the accumulation of hyper-phosphorylated Tau protein; it causes breakages in the synaptic bonds and neuronal deaths to a large extent. Millions of people worldwide suffer from AD because there is no definitive drug for disease prevention, treatment or slowdown. Over the last decade, multiple target applications have been developed for AD treatments. These targets include Aβ accumulations, hyper-phosphorylated Tau proteins, mitochondrial dysfunction, and oxidative stress resulting in toxicity. Various natural or semisynthetic antioxidant formulations have been shown to protect brain cells from Aβ induced toxicity and provide promising potentials for AD treatment. Ferulic acid (FA), a high-capacity antioxidant molecule, is naturally synthesized from certain plants. FA has been shown to have different substantial biological properties, such as anticancer, antidiabetic, antimicrobial, anti-inflammatory, hepatoprotective, and cardioprotective actions, etc. Furthermore, FA exerted neuroprotection via preventing Aβ-fibril formation, acting as an anti-inflammatory agent, and inhibiting free radical generation and acetylcholinesterase (AChE) enzyme activity. In this review, we present key biological roles of FA and several FA derivatives in Aβ-induced neurotoxicity, protection against free radical attacks, and enzyme inhibitions and describe them as possible therapeutic agents for the treatment of AD.
Collapse
Affiliation(s)
- Hasan Turkez
- Department of Medical Biology, Faculty of Medicine, Atatürk University, 25240, Erzurum, Turkey
- Department of Pharmacy, University G. d'Annunzio Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
| | - Mehmet Enes Arslan
- Department of Molecular Biology and Genetics, Erzurum Technical University, 25200, Erzurum, Turkey
| | - Joice Nascimento Barboza
- Department of Pharmaceutical Sciences, Federal University of Paraíba, 58051-970, João Pessoa, PB, Brazil
| | - Cigdem Yuce Kahraman
- Department of Medical Genetics, Faculty of Medicine, Atatürk University, 25240, Erzurum, Turkey
| | - Damiao Pergentino de Sousa
- Department of Pharmaceutical Sciences, Federal University of Paraíba, 58051-970, João Pessoa, PB, Brazil
| | - Adil Mardinoğlu
- Science for Life Laboratory, KTH-Royal Institute of Technology, Stockholm, SE-17121, Sweden
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, SE1 9RT, United Kingdom
| |
Collapse
|
11
|
Wang EJ, Wu MY, Lu JH. Ferulic Acid in Animal Models of Alzheimer's Disease: A Systematic Review of Preclinical Studies. Cells 2021; 10:2653. [PMID: 34685633 PMCID: PMC8534433 DOI: 10.3390/cells10102653] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 02/03/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease with a high incidence in the elderly. Many preclinical studies show that a natural product, ferulic acid (FA), displays neuroprotective effects in AD models. This review aims to systematically review and meta-analyze published pre-clinical researches about the effects, mechanism, and clinical prospects of FA in the treatment of AD. According to the pre-determined search strategy and inclusion criteria, a total of 344 animals in 12 papers were included in the meta-analysis. We used the fixed effects model to analyze data and I2 and p values to indicate heterogeneity. Results show that FA treatment can effectively improve rodents' spatial memory ability in MWM and Y maze experiments (I2 ≥ 70, p < 0.005), and reduce the deposition of Aβ in the brains of various model animals (I2 ≥ 50, p < 0.005). The potential mechanisms include anti-amyloidogenesis, anti-inflammation, anti-oxidation, mitochondrial protection, and inhibition of apoptosis. In conclusion, we systematically review and meta-analyze the literature reporting the effects of FA treatment on AD rodent models and solidify the benefits of FA in reducing Aβ deposition and improving memory in preclinical experiments. We also point out the limitations in the current research design and provide a strategy for the production research of FA in the future.
Collapse
Affiliation(s)
| | | | - Jia-Hong Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China; (E.-J.W.); (M.-Y.W.)
| |
Collapse
|
12
|
Carregosa D, Mota S, Ferreira S, Alves-Dias B, Loncarevic-Vasiljkovic N, Crespo CL, Menezes R, Teodoro R, dos Santos CN. Overview of Beneficial Effects of (Poly)phenol Metabolites in the Context of Neurodegenerative Diseases on Model Organisms. Nutrients 2021; 13:2940. [PMID: 34578818 PMCID: PMC8464690 DOI: 10.3390/nu13092940] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/22/2021] [Accepted: 08/23/2021] [Indexed: 12/18/2022] Open
Abstract
The rise of neurodegenerative diseases in an aging population is an increasing problem of health, social and economic consequences. Epidemiological and intervention studies have demonstrated that diets rich in (poly)phenols can have potent health benefits on cognitive decline and neurodegenerative diseases. Meanwhile, the role of gut microbiota is ever more evident in modulating the catabolism of (poly)phenols to dozens of low molecular weight (poly)phenol metabolites that have been identified in plasma and urine. These metabolites can reach circulation in higher concentrations than parent (poly)phenols and persist for longer periods of time. However, studies addressing their potential brain effects are still lacking. In this review, we will discuss different model organisms that have been used to study how low molecular weight (poly)phenol metabolites affect neuronal related mechanisms gathering critical insight on their potential to tackle the major hallmarks of neurodegeneration.
Collapse
Affiliation(s)
- Diogo Carregosa
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
| | - Sara Mota
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
- iBET, Institute of Experimental and Technological Biology, Apartado 12, 2781-901 Oeiras, Portugal
| | - Sofia Ferreira
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
- CBIOS, University Lusófona’s Research Center for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Beatriz Alves-Dias
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
| | - Natasa Loncarevic-Vasiljkovic
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
- Department of Neurobiology, Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Carolina Lage Crespo
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
| | - Regina Menezes
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
- iBET, Institute of Experimental and Technological Biology, Apartado 12, 2781-901 Oeiras, Portugal
- CBIOS, University Lusófona’s Research Center for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Rita Teodoro
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
| | - Cláudia Nunes dos Santos
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 1169-056 Lisboa, Portugal; (D.C.); (S.M.); (S.F.); (B.A.-D.); (N.L.-V.); (C.L.C.); (R.M.); (R.T.)
- iBET, Institute of Experimental and Technological Biology, Apartado 12, 2781-901 Oeiras, Portugal
| |
Collapse
|
13
|
Giunti S, Andersen N, Rayes D, De Rosa MJ. Drug discovery: Insights from the invertebrate Caenorhabditis elegans. Pharmacol Res Perspect 2021; 9:e00721. [PMID: 33641258 PMCID: PMC7916527 DOI: 10.1002/prp2.721] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/06/2021] [Indexed: 12/18/2022] Open
Abstract
Therapeutic drug development is a long, expensive, and complex process that usually takes 12-15 years. In the early phases of drug discovery, in particular, there is a growing need for animal models that ensure the reduction in both cost and time. Caenorhabditis elegans has been traditionally used to address fundamental aspects of key biological processes, such as apoptosis, aging, and gene expression regulation. During the last decade, with the advent of large-scale platforms for screenings, this invertebrate has also emerged as an essential tool in the pharmaceutical research industry to identify novel drugs and drug targets. In this review, we discuss the reasons why C. elegans has been positioned as an outstanding cost-effective option for drug discovery, highlighting both the advantages and drawbacks of this model. Particular attention is paid to the suitability of this nematode in large-scale genetic and pharmacological screenings. High-throughput screenings in C. elegans have indeed contributed to the breakthrough of a wide variety of candidate compounds involved in extensive fields including neurodegeneration, pathogen infections and metabolic disorders. The versatility of this nematode, which enables its instrumentation as a model of human diseases, is another attribute also herein underscored. As illustrative examples, we discuss the utility of C. elegans models of both human neurodegenerative diseases and parasitic nematodes in the drug discovery industry. Summing up, this review aims to demonstrate the impact of C. elegans models on the drug discovery pipeline.
Collapse
Affiliation(s)
- Sebastián Giunti
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB) CCT UNS‐CONICETBahía BlancaArgentina
- Dpto de Biología, Bioquímica y FarmaciaUniversidad Nacional del SurBahía BlancaArgentina
| | - Natalia Andersen
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB) CCT UNS‐CONICETBahía BlancaArgentina
- Dpto de Biología, Bioquímica y FarmaciaUniversidad Nacional del SurBahía BlancaArgentina
| | - Diego Rayes
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB) CCT UNS‐CONICETBahía BlancaArgentina
- Dpto de Biología, Bioquímica y FarmaciaUniversidad Nacional del SurBahía BlancaArgentina
| | - María José De Rosa
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB) CCT UNS‐CONICETBahía BlancaArgentina
- Dpto de Biología, Bioquímica y FarmaciaUniversidad Nacional del SurBahía BlancaArgentina
| |
Collapse
|
14
|
Henríquez G, Gomez A, Guerrero E, Narayan M. Potential Role of Natural Polyphenols against Protein Aggregation Toxicity: In Vitro, In Vivo, and Clinical Studies. ACS Chem Neurosci 2020; 11:2915-2934. [PMID: 32822152 DOI: 10.1021/acschemneuro.0c00381] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
One of the main features of neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease is the amyloidogenic behavior of disease-specific proteins including amyloid β, tau, α-synuclein, and mutant Huntingtin which participate in the formation, accumulation, and deposition of toxic misfolded aggregates. Consequently, these proteins not only associated with the progress of their respective neurodegenerative pathologies but also qualify as disease-specific biomarkers. The aim of using natural polyphenols is to target amyloid-dependent proteopathies by decreasing free radical damage and inhibiting and dissolving amyloid fibrils. We explore the effectiveness of the polyphenols epigallocatechin-3-gallate, oleuropein aglycone, and quercetin on their ability to inhibit aggregation of amyloid β, tau, and α-synuclein and mitigate other pathological features for Alzheimer's disease and Parkinson's disease. The analysis was carried from in vitro and cell line studies to animal models and clinical trials. This Review describes the use of phytochemical compounds as prophylactic agents for Alzheimer's disease, Parkinson's disease, and other proteopathies.
Collapse
Affiliation(s)
- Gabriela Henríquez
- Department of Environmental Science and Engineering, the University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
| | - Alejandra Gomez
- Department of Chemistry and Biochemistry, the University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
| | - Erick Guerrero
- Department of Chemistry and Biochemistry, the University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
| | - Mahesh Narayan
- Department of Chemistry and Biochemistry, the University of Texas at El Paso (UTEP), El Paso, Texas 79968, United States
| |
Collapse
|
15
|
Keowkase R, Kijmankongkul N, Sangtian W, Poomborplab S, Santa-ardharnpreecha C, Weerapreeyakul N, Sitthithaworn W. Protective Effect and Mechanism of Fruit Extract of Aegle marmelos Against Amyloid-β Toxicity in a Transgenic Caenorhabditis elegans. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20933511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common form of dementia found in the elderly. AD is caused by the accumulation of toxic proteins including amyloid-β (Aβ). The purpose of this study was to investigate the effect of fruit extract of Aegle marmelos against Aβ toxicity in Caenorhabditis elegans. The fruit of A. marmelos has been used in a traditional Thai herb formula in fatigue patients recovering from illnesses such as fever and diarrhea. We used a transgenic C. elegans strain CL4176, which expresses the human Aβ42, to investigate the effects and the mechanisms of action of the extracts against Aβ toxicity. The extract of A. marmelos significantly delayed Aβ-induced paralysis. Aegle marmelos lost the ability to delay Aβ-induced paralysis in worms fed with daf-16 ribonucleic acid interference (RNAi) bacteria, but not in worms fed with hsf-1 and skin-1 RNAi bacteria. These results indicated that daf-16 transcription factor was required for A. marmelos-mediated delayed paralysis. Aegle marmelos enhanced the level of daf-16 gene. Taken together, these results indicated that A. marmelos reduced Aβ toxicity via the DAF-16-mediated cell signaling pathway. In addition, A. marmelos reduced toxic Aβ oligomers. Aegle marmelos also displayed antioxidative effect in in vivo as it enhanced resistance to paraquat-induced oxidative stress in wild type worms. All of the results suggested that A. marmelos can protect against Aβ-induced toxicity and can be a potential candidate for the prevention or treatment of AD.
Collapse
Affiliation(s)
- Roongpetch Keowkase
- Department of Biopharmacy, Faculty of Pharmacy, Srinakharinwirot University, Nakhonnayok, Thailand
| | - Nattanon Kijmankongkul
- Department of Biopharmacy, Faculty of Pharmacy, Srinakharinwirot University, Nakhonnayok, Thailand
| | - Wanapong Sangtian
- Department of Biopharmacy, Faculty of Pharmacy, Srinakharinwirot University, Nakhonnayok, Thailand
| | - Sireethorn Poomborplab
- Department of Biopharmacy, Faculty of Pharmacy, Srinakharinwirot University, Nakhonnayok, Thailand
| | | | - Natthida Weerapreeyakul
- Division of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
- Human High Performance and Health Promotion (HHP&HP) Research Institute, Khon Kaen University, Thailand
| | - Worapan Sitthithaworn
- Department of Pharmacognosy, Faculty of Pharmacy, Srinakharinwirot University, Nakhonnayok, Thailand
| |
Collapse
|
16
|
Romero-Márquez JM, Navarro-Hortal MD, Varela-López A, Osta S, Zabaleta ME, Rivas-García L, Orantes-Bermejo FJ, Fernández-Píñar CT, Quiles JL. Usefulness of beeswax recycling by-products in the treatment of β-amyloid toxicity in a C. elegans model of Alzheimer. MEDITERRANEAN JOURNAL OF NUTRITION AND METABOLISM 2020. [DOI: 10.3233/mnm-200404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jose M. Romero-Márquez
- Department of Physiology, Institute of Nutrition and Food Technology “José Mataix Verdú”, Biomedical Research Center, University of Granada, Avda del Conocimiento sn., Armilla, Granada, Spain
| | - M. Dolores Navarro-Hortal
- Department of Physiology, Institute of Nutrition and Food Technology “José Mataix Verdú”, Biomedical Research Center, University of Granada, Avda del Conocimiento sn., Armilla, Granada, Spain
| | - Alfonso Varela-López
- Department of Physiology, Institute of Nutrition and Food Technology “José Mataix Verdú”, Biomedical Research Center, University of Granada, Avda del Conocimiento sn., Armilla, Granada, Spain
| | - Safa Osta
- Department of Physiology, Institute of Nutrition and Food Technology “José Mataix Verdú”, Biomedical Research Center, University of Granada, Avda del Conocimiento sn., Armilla, Granada, Spain
| | - María Eléxpuru Zabaleta
- Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Torrette di Ancona, Ancona, Italy
| | - Lorenzo Rivas-García
- Department of Physiology, Institute of Nutrition and Food Technology “José Mataix Verdú”, Biomedical Research Center, University of Granada, Avda del Conocimiento sn., Armilla, Granada, Spain
| | | | | | - José L. Quiles
- Department of Physiology, Institute of Nutrition and Food Technology “José Mataix Verdú”, Biomedical Research Center, University of Granada, Avda del Conocimiento sn., Armilla, Granada, Spain
- College of Food Science and Technology, Northwest University, Xi’an, China
| |
Collapse
|
17
|
Machado ML, Arantes LP, da Silveira TL, Zamberlan DC, Cordeiro LM, Obetine FBB, da Silva AF, da Cruz IBM, Soares FAA, Oliveira RDP. Ilex paraguariensis extract provides increased resistance against oxidative stress and protection against Amyloid beta-induced toxicity compared to caffeine in Caenorhabditis elegans. Nutr Neurosci 2019; 24:697-709. [PMID: 31595831 DOI: 10.1080/1028415x.2019.1671694] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ilex paraguariensis is a plant from South America, used to prepare a tea-like beverage rich in caffeine and polyphenols with antioxidant proprieties. Caffeine consumption is associated with a lower risk of age-associated neuropathologies, besides several extracts that have antioxidant proprieties are known to be neuroprotective, and oxidative stress strongly correlates with Aβ-toxicity. This study aims to investigate the neuroprotective effects of the Ilex paraguariensis hydroalcoholic extract (IPHE) and to evaluate if caffeine agent present in IPHE exerts neuroprotective effects in an amyloid beta-peptide (Aβ)-induced toxicity in Caenorhabditis elegans. The wild-type and CL2006 worms were treated with IPHE (2 and 4 mg/mL) or caffeine (200 and 400 μM) since larval stage 1 (L1) until they achieved the required age for each assay. IPHE and caffeine increased the lifespan and appeared to act directly by reactive oxygen species (ROS) scavenger in both wild-type and CL2006 worms, also conferred resistance against oxidative stress in wild-type animals. Furthermore, both treatments delayed Aβ-induced paralysis and decreased AChE activity in CL2006. The protective effect of IPHE against Aβ-induced paralysis was found to be dependent on heat shock factor hsf-1 and FOXO-family transcription factor daf-16, which are respectively involved in aging-related processes and chaperone synthesis, while that of caffeine was dependent only on daf-16. Mechanistically, IPHE and caffeine decreased the levels of Aβ mRNA in the CL2006 worms; however, only IPHE induced expression of the heat shock chaperonin hsp-16.2, involved in protein homeostasis. The results were overall better when treated with IPHE than with caffeine.
Collapse
Affiliation(s)
- Marina Lopes Machado
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Leticia Priscilla Arantes
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Tássia Limana da Silveira
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Daniele Coradini Zamberlan
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Larissa Marafiga Cordeiro
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Fabiane Baptista Bicca Obetine
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Aline Franzen da Silva
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | | | - Felix Alexandre Antunes Soares
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Riva de Paula Oliveira
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| |
Collapse
|
18
|
Colombo R, Papetti A. An outlook on the role of decaffeinated coffee in neurodegenerative diseases. Crit Rev Food Sci Nutr 2019; 60:760-779. [DOI: 10.1080/10408398.2018.1550384] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Adele Papetti
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| |
Collapse
|
19
|
Novel multi-target compounds in the quest for new chemotherapies against Alzheimer’s disease: An experimental and theoretical study. Bioorg Med Chem 2018; 26:4823-4840. [DOI: 10.1016/j.bmc.2018.08.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 08/14/2018] [Indexed: 01/05/2023]
|
20
|
Wong SQ, Pontifex MG, Phelan MM, Pidathala C, Kraemer BC, Barclay JW, Berry NG, O'Neill PM, Burgoyne RD, Morgan A. α-Methyl-α-phenylsuccinimide ameliorates neurodegeneration in a C. elegans model of TDP-43 proteinopathy. Neurobiol Dis 2018; 118:40-54. [PMID: 29940336 PMCID: PMC6097874 DOI: 10.1016/j.nbd.2018.06.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/06/2018] [Accepted: 06/15/2018] [Indexed: 12/12/2022] Open
Abstract
The antiepileptic drug ethosuximide has recently been shown to be neuroprotective in various Caenorhabditis elegans and rodent neurodegeneration models. It is therefore a promising repurposing candidate for the treatment of multiple neurodegenerative diseases. However, high concentrations of the drug are required for its protective effects in animal models, which may impact on its translational potential and impede the identification of its molecular mechanism of action. Therefore, we set out to develop more potent neuroprotective lead compounds based on ethosuximide as a starting scaffold. Chemoinformatic approaches were used to identify compounds with structural similarity to ethosuximide and to prioritise these based on good predicated blood-brain barrier permeability and C. elegans bioaccumulation properties. Selected compounds were initially screened for anti-convulsant activity in a C. elegans pentylenetetrazol-induced seizure assay, as a rapid primary readout of bioactivity; and then assessed for neuroprotective properties in a C. elegans TDP-43 proteinopathy model based on pan-neuronal expression of human A315T mutant TDP-43. The most potent compound screened, α-methyl-α-phenylsuccinimide (MPS), ameliorated the locomotion defects and extended the shortened lifespan of TDP-43 mutant worms. MPS also directly protected against neurodegeneration by reducing the number of neuronal breaks and cell body losses in GFP-labelled GABAergic motor neurons. Importantly, optimal neuroprotection was exhibited by external application of 50 μM MPS, compared to 8 mM for ethosuximide. This greater potency of MPS was not due to bioaccumulation to higher internal levels within the worm, based on 1H-nuclear magnetic resonance analysis. Like ethosuximide, the activity of MPS was abolished by mutation of the evolutionarily conserved FOXO transcription factor, daf-16, suggesting that both compounds act via the same neuroprotective pathway(s). In conclusion, we have revealed a novel neuroprotective activity of MPS that is >100-fold more potent than ethosuximide. This increased potency will facilitate future biochemical studies to identify the direct molecular target(s) of both compounds, as we have shown here that they share a common downstream DAF-16-dependent mechanism of action. Furthermore, MPS is the active metabolite of another approved antiepileptic drug, methsuximide. Therefore, methsuximide may have repurposing potential for treatment of TDP-43 proteinopathies and possibly other human neurodegenerative diseases.
Collapse
Affiliation(s)
- Shi Quan Wong
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.
| | - Matthew G Pontifex
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.
| | - Marie M Phelan
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, UK.
| | | | - Brian C Kraemer
- Geriatrics Research Education and Clinical Center, Seattle Veterans Affairs Puget Sound Health Care System, University of Washington Department of Medicine, Seattle, WA 98108, USA.
| | - Jeff W Barclay
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.
| | - Neil G Berry
- Department of Chemistry, University of Liverpool, Liverpool, UK.
| | - Paul M O'Neill
- Department of Chemistry, University of Liverpool, Liverpool, UK.
| | - Robert D Burgoyne
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.
| | - Alan Morgan
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.
| |
Collapse
|
21
|
Colonnello A, Kotlar I, de Lima ME, Ortíz-Plata A, García-Contreras R, Soares FAA, Aschner M, Santamaría A. Comparing the Effects of Ferulic Acid and Sugarcane Aqueous Extract in In Vitro and In Vivo Neurotoxic Models. Neurotox Res 2018; 34:640-648. [DOI: 10.1007/s12640-018-9926-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/06/2018] [Accepted: 06/07/2018] [Indexed: 02/07/2023]
|
22
|
Agrawal M, Saraf S, Saraf S, Antimisiaris SG, Hamano N, Li SD, Chougule M, Shoyele SA, Gupta U, Ajazuddin, Alexander A. Recent advancements in the field of nanotechnology for the delivery of anti-Alzheimer drug in the brain region. Expert Opin Drug Deliv 2018; 15:589-617. [DOI: 10.1080/17425247.2018.1471058] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Mukta Agrawal
- Department of Pharmaceutics, Rungta College of Pharmaceutical Sciences and Research, Bhilai, Chhattisgarh, India
| | - Swarnlata Saraf
- Department of Pharmaceutics, University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
| | - Shailendra Saraf
- Department of Pharmaceutics, University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, India
- Durg University, Govt. Vasudev Vaman Patankar Girls’ P.G. College Campus, Raipur Naka, Durg, Chhattisgarh, India
| | - Sophia G. Antimisiaris
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, University of Patras, Rio, 26510, Greece
- Department of Pharmacy, FORTH/ICE-HT, Institute of Chemical Engineering, Rio, Patras, 25104, Greece
| | - Nobuhito Hamano
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British columbia V6T 1Z3, Canada
| | - Shyh-Dar Li
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British columbia V6T 1Z3, Canada
| | - Mahavir Chougule
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, University of Mississippi, Oxford, MS, 38677, USA
- Research Institute of Pharmaceutical Sciences, University of Mississippi, University, MS, USA
| | - Sunday A. Shoyele
- Department of Pharmaceutical Sciences, College of Pharmacy, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Umesh Gupta
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Kishangarh, Ajmer – 305817, India
| | - Ajazuddin
- Department of Pharmaceutics, Rungta College of Pharmaceutical Sciences and Research, Bhilai, Chhattisgarh, India
| | - Amit Alexander
- Department of Pharmaceutics, Rungta College of Pharmaceutical Sciences and Research, Bhilai, Chhattisgarh, India
| |
Collapse
|
23
|
Momtaz S, Hassani S, Khan F, Ziaee M, Abdollahi M. Cinnamon, a promising prospect towards Alzheimer's disease. Pharmacol Res 2017; 130:241-258. [PMID: 29258915 DOI: 10.1016/j.phrs.2017.12.011] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 12/10/2017] [Accepted: 12/10/2017] [Indexed: 12/25/2022]
Abstract
Over the last decades, an exponential increase of efforts concerning the treatment of Alzheimer's disease (AD) has been practiced. Phytochemicals preparations have a millenary background to combat various pathological conditions. Various cinnamon species and their biologically active ingredients have renewed the interest towards the treatment of patients with mild-to-moderate AD through the inhibition of tau protein aggregation and prevention of the formation and accumulation of amyloid-β peptides into the neurotoxic oligomeric inclusions, both of which are considered to be the AD trademarks. In this review, we presented comprehensive data on the interactions of a number of cinnamon polyphenols (PPs) with oxidative stress and pro-inflammatory signaling pathways in the brain. In addition, we discussed the potential association between AD and diabetes mellitus (DM), vis-à-vis the effluence of cinnamon PPs. Further, an upcoming prospect of AD epigenetic pathophysiological conditions and cinnamon has been sighted. Data was retrieved from the scientific databases such as PubMed database of the National Library of Medicine, Scopus and Google Scholar without any time limitation. The extract of cinnamon efficiently inhibits tau accumulations, Aβ aggregation and toxicity in vivo and in vitro models. Indeed, cinnamon possesses neuroprotective effects interfering multiple oxidative stress and pro-inflammatory pathways. Besides, cinnamon modulates endothelial functions and attenuates the vascular cell adhesion molecules. Cinnamon PPs may induce AD epigenetic modifications. Cinnamon and in particular, cinnamaldehyde seem to be effective and safe approaches for treatment and prevention of AD onset and/or progression. However, further molecular and translational research studies as well as prolonged clinical trials are required to establish the therapeutic safety and efficacy in different cinnamon spp.
Collapse
Affiliation(s)
- Saeideh Momtaz
- Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran; Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Shokoufeh Hassani
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fazlullah Khan
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; International Campus, Tehran University of Medical Sciences (IC-TUMS), Tehran Iran
| | - Mojtaba Ziaee
- Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran; Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; International Campus, Tehran University of Medical Sciences (IC-TUMS), Tehran Iran.
| |
Collapse
|
24
|
Ma L, Zhao Y, Chen Y, Cheng B, Peng A, Huang K. Caenorhabditis elegans as a model system for target identification and drug screening against neurodegenerative diseases. Eur J Pharmacol 2017; 819:169-180. [PMID: 29208474 DOI: 10.1016/j.ejphar.2017.11.051] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 11/30/2017] [Indexed: 12/12/2022]
Abstract
Over the past decades, Caenorhabditis elegans (C. elegans) has been widely used as a model system because of its small size, transparent body, short generation time and lifespan (~3 days and 3 weeks, respectively), completely sequenced genome and tractability to genetic manipulation. Protein misfolding and aggregation are key pathological features in neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, Huntington's disease and Amyotrophic lateral sclerosis. Animal models, including C. elegans, have been extensively used to discover and validate new drugs against neurodegenerative diseases. The well-defined and genetically tractable nervous system of C. elegans offers an effective model to explore basic mechanistic pathways of neurodegenerative diseases. Recent progress in high-throughput drug screening also provides a powerful approach for identifying chemical modulators of biological processes. Here, we summarize the latest progress of using C. elegans as a model system for target identification and drug screening in neurodegenerative diseases.
Collapse
Affiliation(s)
- Liang Ma
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yudan Zhao
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yuchen Chen
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Biao Cheng
- Department of Pharmacy, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - Anlin Peng
- Department of Pharmacy, The Third Hospital of Wuhan, Wuhan 430060, China
| | - Kun Huang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China; Center for Biomedicine Research, Wuhan Institute of Biotechnology, Wuhan 430075, China.
| |
Collapse
|
25
|
Meng LS, Li B, Li DN, Wang YH, Lin Y, Meng XJ, Sun XY, Liu N. Cyanidin-3-O-glucoside attenuates amyloid-beta (1–40)-induced oxidative stress and apoptosis in SH-SY5Y cells through a Nrf2 mechanism. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.09.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
|
26
|
Omar SH, Scott CJ, Hamlin AS, Obied HK. The protective role of plant biophenols in mechanisms of Alzheimer's disease. J Nutr Biochem 2017; 47:1-20. [PMID: 28301805 DOI: 10.1016/j.jnutbio.2017.02.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 01/03/2017] [Accepted: 02/16/2017] [Indexed: 12/31/2022]
Abstract
Self-assembly of amyloid beta peptide (Aβ) into the neurotoxic oligomers followed by fibrillar aggregates is a defining characteristic of Alzheimer's disease (AD). Several lines of proposed hypotheses have suggested the mechanism of AD pathology, though the exact pathophysiological mechanism is not yet elucidated. The poor understanding of AD and multitude of adverse responses reported from the current synthetic drugs are the leading cause of failure in the drug development to treat or halt the progression of AD and mandate the search for safer and more efficient alternatives. A number of natural compounds have shown the ability to prevent the formation of the toxic oligomers and disrupt the aggregates, thus attracted much attention. Referable to the abundancy and multitude of pharmacological activities of the plant active constituents, biophenols that distinguish them from the other phytochemicals as a natural weapon against the neurodegenerative disorders. This review provides a critical assessment of the current literature on in vitro and in vivo mechanistic activities of biophenols associated with the prevention and treatment of AD. We have contended the need for more comprehensive approaches to evaluate the anti-AD activity of biophenols at various pathologic levels and to assess the current evidences. Consequently, we highlighted the various problems and challenges confronting the AD research, and offer recommendations for future research.
Collapse
Affiliation(s)
- Syed H Omar
- School of Biomedical Sciences, Faculty of Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia; Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW 2678, Australia.
| | - Christopher J Scott
- School of Biomedical Sciences, Faculty of Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia; Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW 2678, Australia
| | - Adam S Hamlin
- School of Science & Technology, University of New England, Armidale, NSW 2351, Australia
| | - Hassan K Obied
- School of Biomedical Sciences, Faculty of Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia; Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW 2678, Australia
| |
Collapse
|
27
|
New insights into the ameliorative effects of ferulic acid in pathophysiological conditions. Food Chem Toxicol 2017; 103:41-55. [PMID: 28237775 DOI: 10.1016/j.fct.2017.02.028] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/16/2017] [Accepted: 02/20/2017] [Indexed: 12/21/2022]
Abstract
Ferulic acid, a natural phytochemical has gained importance as a potential therapeutic agent by virtue of its easy commercial availability, low cost and minimal side-effects. It is a derivative of curcumin and possesses the necessary pharmacokinetic properties to be retained in the general circulation for several hours. The therapeutic effects of ferulic acid are mediated through its antioxidant and anti-inflammatory properties. It exhibits different biological activities such as anti-inflammatory, anti-apoptotic, anti-carcinogenic, anti-diabetic, hepatoprotective, cardioprotective, neuroprotective actions, etc. The current review addresses its therapeutic effects under different pathophysiological conditions (eg. cancer, cardiomyopathy, skin disorders, brain disorders, viral infections, diabetes etc.).
Collapse
|
28
|
Sun D, Li N, Zhang W, Zhao Z, Mou Z, Huang D, Liu J, Wang W. Design of PLGA-functionalized quercetin nanoparticles for potential use in Alzheimer’s disease. Colloids Surf B Biointerfaces 2016; 148:116-129. [DOI: 10.1016/j.colsurfb.2016.08.052] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 08/26/2016] [Accepted: 08/29/2016] [Indexed: 12/14/2022]
|
29
|
Caruana M, Cauchi R, Vassallo N. Putative Role of Red Wine Polyphenols against Brain Pathology in Alzheimer's and Parkinson's Disease. Front Nutr 2016; 3:31. [PMID: 27570766 PMCID: PMC4981604 DOI: 10.3389/fnut.2016.00031] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Accepted: 07/29/2016] [Indexed: 01/07/2023] Open
Abstract
Alzheimer's disease (AD) and Parkinson's disease (PD) are the most common age-related neurodegenerative disorders and hence pose remarkable socio-economical burdens to both families and state. Although AD and PD have different clinical and neuropathological features, they share common molecular mechanisms that appear to be triggered by multi-factorial events, such as protein aggregation, mitochondrial dysfunction, oxidative stress (OS), and neuroinflammation, ultimately leading to neuronal cell death. Currently, there are no established and validated disease-modifying strategies for either AD or PD. Among the various lifestyle factors that may prevent or slow age-related neurodegenerative diseases, epidemiological studies on moderate consumption of red wine, especially as part of a holistic Mediterranean diet, have attracted increasing interest. Red wine is particularly rich in specific polyphenolic compounds that appear to affect the biological processes of AD and PD, such as quercetin, myricetin, catechins, tannins, anthocyanidins, resveratrol, and ferulic acid. Indeed, there is now a consistent body of in vitro and in vivo data on the neuroprotective effects of red wine polyphenols (RWP) showing that they do not merely possess antioxidant properties, but may additionally act upon, in a multi-target manner, the underlying key mechanisms featuring in both AD and PD. Furthermore, it is important that bioavailability issues are addressed in order for neuroprotection to be relevant in a clinical study scenario. This review summarizes the current knowledge about the major classes of RWP and places into perspective their potential to be considered as nutraceuticals to target neuropathology in AD and PD.
Collapse
Affiliation(s)
- Mario Caruana
- Centre for Molecular Medicine and Biobanking, University of Malta , Msida , Malta
| | - Ruben Cauchi
- Centre for Molecular Medicine and Biobanking, University of Malta, Msida, Malta; Department of Physiology and Biochemistry, University of Malta, Msida, Malta
| | - Neville Vassallo
- Centre for Molecular Medicine and Biobanking, University of Malta, Msida, Malta; Department of Physiology and Biochemistry, University of Malta, Msida, Malta
| |
Collapse
|
30
|
Ionophoric polyphenols selectively bind Cu2+, display potent antioxidant and anti-amyloidogenic properties, and are non-toxic toward Tetrahymena thermophila. Bioorg Med Chem 2016; 24:3657-70. [DOI: 10.1016/j.bmc.2016.06.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 05/30/2016] [Accepted: 06/03/2016] [Indexed: 01/07/2023]
|
31
|
Ghobeh M, Ahmadian S, Meratan AA, Ebrahim-Habibi A, Ghasemi A, Shafizadeh M, Nemat-Gorgani M. Interaction of Aβ(25-35) fibrillation products with mitochondria: Effect of small-molecule natural products. Biopolymers 2016; 102:473-86. [PMID: 25297917 DOI: 10.1002/bip.22572] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 09/18/2014] [Accepted: 10/06/2014] [Indexed: 12/25/2022]
Abstract
The 25-35 fragment of the amyloid β (Aβ) peptide is a naturally occurring proteolytic by-product that retains the pathophysiology of its larger parent molecule, whose deposition has been shown to involve mitochondrial dysfunction. Hence, disruption of Aβ(25-35) aggregates could afford an effective remedial strategy for Alzheimer's disease (AD). In the present study, the effect of a number of selected small-molecule natural products (polyphenols: resveratrol, quercetin, biochanin A, and indoles: indole-3-acetic acid, indole-3-carbinol (I3C)) on Aβ(25-35) fibrillogenesis was explored under physiological conditions, and interaction of the resulting structures with rat brain mitochondria was investigated. Several techniques, including fluorescence, circular dichroism, and transmission electron microscopy were utilized to characterize the aggregation products, and possible mitochondrial membrane permeabilization was determined following release of marker enzymes. Results demonstrate the capacity of Aβ(25-35) fibrils to damage mitochondria and suggest how small molecules may afford protection. While I3C appeared more effective in inhibiting the fibrillation process, all natural products behaved similarly in destabilizing preformed aggregates. It is concluded that elucidation of such protection may provide important insights into the development of preventive and therapeutic agents for AD.
Collapse
Affiliation(s)
- Maryam Ghobeh
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | | | | | | | | | | | | |
Collapse
|
32
|
Chen X, Barclay JW, Burgoyne RD, Morgan A. Using C. elegans to discover therapeutic compounds for ageing-associated neurodegenerative diseases. Chem Cent J 2015; 9:65. [PMID: 26617668 PMCID: PMC4661952 DOI: 10.1186/s13065-015-0143-y] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/15/2015] [Indexed: 12/24/2022] Open
Abstract
Age-associated neurodegenerative disorders such as Alzheimer's disease are a major public health challenge, due to the demographic increase in the proportion of older individuals in society. However, the relatively few currently approved drugs for these conditions provide only symptomatic relief. A major goal of neurodegeneration research is therefore to identify potential new therapeutic compounds that can slow or even reverse disease progression, either by impacting directly on the neurodegenerative process or by activating endogenous physiological neuroprotective mechanisms that decline with ageing. This requires model systems that can recapitulate key features of human neurodegenerative diseases that are also amenable to compound screening approaches. Mammalian models are very powerful, but are prohibitively expensive for high-throughput drug screens. Given the highly conserved neurological pathways between mammals and invertebrates, Caenorhabditis elegans has emerged as a powerful tool for neuroprotective compound screening. Here we describe how C. elegans has been used to model various human ageing-associated neurodegenerative diseases and provide an extensive list of compounds that have therapeutic activity in these worm models and so may have translational potential.
Collapse
Affiliation(s)
- Xi Chen
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown St, Liverpool, L69 3BX UK ; Centre for Neurodegenerative Science, Van Andel Research Institute, 333 Bostwick Avenue NE, Grand Rapids, Michigan, MI 49503 USA
| | - Jeff W Barclay
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown St, Liverpool, L69 3BX UK
| | - Robert D Burgoyne
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown St, Liverpool, L69 3BX UK
| | - Alan Morgan
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown St, Liverpool, L69 3BX UK
| |
Collapse
|
33
|
Ferulic Acid: A Hope for Alzheimer's Disease Therapy from Plants. Nutrients 2015; 7:5764-82. [PMID: 26184304 PMCID: PMC4517023 DOI: 10.3390/nu7075246] [Citation(s) in RCA: 172] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 06/26/2015] [Accepted: 07/06/2015] [Indexed: 12/31/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by the deposition of extracellular amyloid-beta peptide (Aβ) and intracellular neurofibrillar tangles, associated with loss of neurons in the brain and consequent learning and memory deficits. Aβ is the major component of the senile plaques and is believed to play a central role in the development and progress of AD both in oligomer and fibril forms. Inhibition of the formation of Aβ fibrils as well as the destabilization of preformed Aβ in the Central Nervous System (CNS) would be an attractive therapeutic target for the treatment of AD. Moreover, a large number of studies indicate that oxidative stress and mitochondrial dysfunction may play an important role in AD and their suppression or reduction via antioxidant use could be a promising preventive or therapeutic intervention for AD patients. Many antioxidant compounds have been demonstrated to protect the brain from Aβ neurotoxicity. Ferulic acid (FA) is an antioxidant naturally present in plant cell walls with anti-inflammatory activities and it is able to act as a free radical scavenger. Here we present the role of FA as inhibitor or disaggregating agent of amyloid structures as well as its effects on biological models.
Collapse
|
34
|
The role of dietary coconut for the prevention and treatment of Alzheimer's disease: potential mechanisms of action. Br J Nutr 2015; 114:1-14. [PMID: 25997382 DOI: 10.1017/s0007114515001452] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Coconut, Cocos nucifera L., is a tree that is cultivated to provide a large number of products, although it is mainly grown for its nutritional and medicinal values. Coconut oil, derived from the coconut fruit, has been recognised historically as containing high levels of saturated fat; however, closer scrutiny suggests that coconut should be regarded more favourably. Unlike most other dietary fats that are high in long-chain fatty acids, coconut oil comprises medium-chain fatty acids (MCFA). MCFA are unique in that they are easily absorbed and metabolised by the liver, and can be converted to ketones. Ketone bodies are an important alternative energy source in the brain, and may be beneficial to people developing or already with memory impairment, as in Alzheimer's disease (AD). Coconut is classified as a highly nutritious 'functional food'. It is rich in dietary fibre, vitamins and minerals; however, notably, evidence is mounting to support the concept that coconut may be beneficial in the treatment of obesity, dyslipidaemia, elevated LDL, insulin resistance and hypertension - these are the risk factors for CVD and type 2 diabetes, and also for AD. In addition, phenolic compounds and hormones (cytokinins) found in coconut may assist in preventing the aggregation of amyloid-β peptide, potentially inhibiting a key step in the pathogenesis of AD. The purpose of the present review was to explore the literature related to coconut, outlining the known mechanistic physiology, and to discuss the potential role of coconut supplementation as a therapeutic option in the prevention and management of AD.
Collapse
|
35
|
Stefani M, Rigacci S. Beneficial properties of natural phenols: highlight on protection against pathological conditions associated with amyloid aggregation. Biofactors 2014; 40:482-93. [PMID: 24890399 DOI: 10.1002/biof.1171] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 11/05/2022]
Abstract
Mediterranean and Asian diets are currently considered as the most healthy traditional feeding habits effective against risk of age-associated, particularly cardiovascular and neurodegenerative, diseases. A common feature of these two regimens is the abundance of foods and beverages of plant origin (green tea, extra virgin olive oil, red wine, spices, berries, and aromatic herbs) that are considered responsible for the observed beneficial effects. Epidemiological data suggest that the phenolic component remarkably enriched in these foods plays an important role in reducing the incidence of amyloid diseases, pathological conditions associated to tissue deposition of toxic protein aggregates responsible for progressive functional deterioration. Great effort is being spent to provide knowledge on the effects of several natural phenols in this context, moving from the test tube to animal models and, more slowly, to the patient's bed. An emerging feature that makes these molecules increasingly attractive for amyloid disease prevention and therapy is their wide spectrum of activity: recent pieces of evidence suggest that they can inhibit the production of amyloidogenic peptides from precursors, increase antioxidant enzyme activity, activate autophagy and reduce inflammation. Our concept should than shift from considering natural phenols simply as antioxidants or, at the best, as amyloid aggregation inhibitors, to describing them as potentially multitargeting drugs. A main concern is the low bioavailability of such compounds and efforts aimed at improving it are underway, with encapsulation strategies being the most promising ones.
Collapse
Affiliation(s)
- Massimo Stefani
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio,", University of Florence, Florence, Italy; Research Centre on the Molecular Basis of Neurodegeneration, University of Florence, Florence, Italy
| | | |
Collapse
|
36
|
Stefani M, Rigacci S. Protein folding and aggregation into amyloid: the interference by natural phenolic compounds. Int J Mol Sci 2013; 14:12411-57. [PMID: 23765219 PMCID: PMC3709793 DOI: 10.3390/ijms140612411] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 05/29/2013] [Accepted: 06/04/2013] [Indexed: 01/17/2023] Open
Abstract
Amyloid aggregation is a hallmark of several degenerative diseases affecting the brain or peripheral tissues, whose intermediates (oligomers, protofibrils) and final mature fibrils display different toxicity. Consequently, compounds counteracting amyloid aggregation have been investigated for their ability (i) to stabilize toxic amyloid precursors; (ii) to prevent the growth of toxic oligomers or speed that of fibrils; (iii) to inhibit fibril growth and deposition; (iv) to disassemble preformed fibrils; and (v) to favor amyloid clearance. Natural phenols, a wide panel of plant molecules, are one of the most actively investigated categories of potential amyloid inhibitors. They are considered responsible for the beneficial effects of several traditional diets being present in green tea, extra virgin olive oil, red wine, spices, berries and aromatic herbs. Accordingly, it has been proposed that some natural phenols could be exploited to prevent and to treat amyloid diseases, and recent studies have provided significant information on their ability to inhibit peptide/protein aggregation in various ways and to stimulate cell defenses, leading to identify shared or specific mechanisms. In the first part of this review, we will overview the significance and mechanisms of amyloid aggregation and aggregate toxicity; then, we will summarize the recent achievements on protection against amyloid diseases by many natural phenols.
Collapse
Affiliation(s)
- Massimo Stefani
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, Florence 50134, Italy; E-Mail:
- Research Centre on the Molecular Basis of Neurodegeneration, Viale Morgagni 50, Florence 50134, Italy
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +39-55-275-8307; Fax: +39-55-275-8905
| | - Stefania Rigacci
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, Florence 50134, Italy; E-Mail:
| |
Collapse
|
37
|
Bhullar KS, Rupasinghe HPV. Polyphenols: multipotent therapeutic agents in neurodegenerative diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:891748. [PMID: 23840922 PMCID: PMC3690243 DOI: 10.1155/2013/891748] [Citation(s) in RCA: 218] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Accepted: 04/29/2013] [Indexed: 12/19/2022]
Abstract
Aging leads to numerous transitions in brain physiology including synaptic dysfunction and disturbances in cognition and memory. With a few clinically relevant drugs, a substantial portion of aging population at risk for age-related neurodegenerative disorders require nutritional intervention. Dietary intake of polyphenols is known to attenuate oxidative stress and reduce the risk for related neurodegenerative diseases such as Alzheimer's disease (AD), stroke, multiple sclerosis (MS), Parkinson's disease (PD), and Huntington's disease (HD). Polyphenols exhibit strong potential to address the etiology of neurological disorders as they attenuate their complex physiology by modulating several therapeutic targets at once. Firstly, we review the advances in the therapeutic role of polyphenols in cell and animal models of AD, PD, MS, and HD and activation of drug targets for controlling pathological manifestations. Secondly, we present principle pathways in which polyphenol intake translates into therapeutic outcomes. In particular, signaling pathways like PPAR, Nrf2, STAT, HIF, and MAPK along with modulation of immune response by polyphenols are discussed. Although current polyphenol researches have limited impact on clinical practice, they have strong evidence and testable hypothesis to contribute clinical advances and drug discovery towards age-related neurological disorders.
Collapse
Affiliation(s)
- Khushwant S. Bhullar
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada B2N 5E3
| | - H. P. Vasantha Rupasinghe
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada B2N 5E3
| |
Collapse
|
38
|
Sgarbossa A, Lenci F. A Study for the Cause of Ferulic Acid-Induced Quenching of Tyrosine Fluorescence and Whether it is a Reliable Marker of Intermolecular Interactions or Not. J Fluoresc 2013; 23:561-7. [DOI: 10.1007/s10895-013-1180-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 02/24/2013] [Indexed: 12/30/2022]
|
39
|
Jameson LP, Smith NW, Dzyuba SV. Dye-binding assays for evaluation of the effects of small molecule inhibitors on amyloid (aβ) self-assembly. ACS Chem Neurosci 2012; 3:807-19. [PMID: 23173064 DOI: 10.1021/cn300076x] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 08/06/2012] [Indexed: 01/07/2023] Open
Abstract
Dye-binding assays, such as those utilizing Congo red and thioflavin T, are among the most widely used tools to probe the aggregation of amyloidogenic biomolecules and for the evaluation of small molecule inhibitors of amyloid aggregation and fibrillization. A number of recent reports have indicated that these dye-binding assays could be prone to false positive effects when assessing inhibitors' potential toward Aβ peptides, species involved in Alzheimer's disease. Specifically, this review focuses on the application of thioflavin T for determining the efficiency of small molecule inhibitors of Aβ aggregation and addresses potential reasons that might be associated with the false positive effects in an effort to increase reliability of dye-binding assays.
Collapse
Affiliation(s)
- Laramie P. Jameson
- Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Nicholas W. Smith
- Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| | - Sergei V. Dzyuba
- Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129, United States
| |
Collapse
|
40
|
Verma M, Sharma A, Naidu S, Bhadra AK, Kukreti R, Taneja V. Curcumin prevents formation of polyglutamine aggregates by inhibiting Vps36, a component of the ESCRT-II complex. PLoS One 2012; 7:e42923. [PMID: 22880132 PMCID: PMC3413662 DOI: 10.1371/journal.pone.0042923] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 07/13/2012] [Indexed: 01/07/2023] Open
Abstract
Small molecules with antioxidative properties have been implicated in amyloid disorders. Curcumin is the active ingredient present in turmeric and known for several biological and medicinal effects. Adequate evidence substantiates the importance of curcumin in Alzheimer's disease and recent evidence suggests its role in Prion and Parkinson's disease. However, contradictory effects have been suggested for Huntington's disease. This difference provided a compelling reason to investigate the effect of curcumin on glutamine-rich (Q-rich) and non-glutamine-rich (non Q-rich) amyloid aggregates in the well established yeast model system. Curcumin significantly inhibited the formation of htt72Q-GFP (a Q-rich) and Het-s-GFP (a non Q-rich) aggregates in yeast. We show that curcumin prevents htt72Q-GFP aggregation by down regulating Vps36, a component of the ESCRT-II (Endosomal sorting complex required for transport). Moreover, curcumin disrupted the htt72Q-GFP aggregates that were pre-formed in yeast and cured the yeast prion, [PSI(+)].
Collapse
Affiliation(s)
- Meenakshi Verma
- Genomics and Molecular Medicine, Institute of Genomics and Integrative Biology (CSIR), Mall Road, Delhi, India
| | - Abhishek Sharma
- Faculty of Chemistry and Biochemistry, Ruhr Universitat, Bochum, Germany
| | - Swarna Naidu
- Department of Research, Sir Ganga Ram Hospital, Delhi, India
| | - Ankan Kumar Bhadra
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Punjab, India
| | - Ritushree Kukreti
- Genomics and Molecular Medicine, Institute of Genomics and Integrative Biology (CSIR), Mall Road, Delhi, India
| | - Vibha Taneja
- Department of Research, Sir Ganga Ram Hospital, Delhi, India
| |
Collapse
|
41
|
Villar-Piqué A, Espargaró A, Sabaté R, de Groot NS, Ventura S. Using bacterial inclusion bodies to screen for amyloid aggregation inhibitors. Microb Cell Fact 2012; 11:55. [PMID: 22553999 PMCID: PMC3495732 DOI: 10.1186/1475-2859-11-55] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Accepted: 05/03/2012] [Indexed: 12/28/2022] Open
Abstract
Background The amyloid-β peptide (Aβ42) is the main component of the inter-neuronal amyloid plaques characteristic of Alzheimer's disease (AD). The mechanism by which Aβ42 and other amyloid peptides assemble into insoluble neurotoxic deposits is still not completely understood and multiple factors have been reported to trigger their formation. In particular, the presence of endogenous metal ions has been linked to the pathogenesis of AD and other neurodegenerative disorders. Results Here we describe a rapid and high-throughput screening method to identify molecules able to modulate amyloid aggregation. The approach exploits the inclusion bodies (IBs) formed by Aβ42 when expressed in bacteria. We have shown previously that these aggregates retain amyloid structural and functional properties. In the present work, we demonstrate that their in vitro refolding is selectively sensitive to the presence of aggregation-promoting metal ions, allowing the detection of inhibitors of metal-promoted amyloid aggregation with potential therapeutic interest. Conclusions Because IBs can be produced at high levels and easily purified, the method overcomes one of the main limitations in screens to detect amyloid modulators: the use of expensive and usually highly insoluble synthetic peptides.
Collapse
Affiliation(s)
- Anna Villar-Piqué
- Departament de Bioquímica i Biologia Molecular, Facultat de Biociències, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Spain
| | | | | | | | | |
Collapse
|