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Zhang D, Zhang J, Ma Z, Wu Q, Liu M, Fan T, Ding L, Ren D, Wen A, Wang J. Luteoloside inhibits Aβ1-42 fibrillogenesis, disintegrates preformed fibrils, and alleviates amyloid-induced cytotoxicity. Biophys Chem 2024; 306:107171. [PMID: 38194817 DOI: 10.1016/j.bpc.2023.107171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/17/2023] [Accepted: 12/30/2023] [Indexed: 01/11/2024]
Abstract
Abnormal aggregation and fibrillogenesis of amyloid-β protein (Aβ) can cause Alzheimer's disease (AD). Thus, the discovery of effective drugs that inhibit Aβ fibrillogenesis in the brain is crucial for the treatment of AD. Luteoloside, as one of the polyphenolic compounds, is found to have a certain therapeutic effect on nervous system diseases. However, it remains unknown whether luteoloside is a potential drug for treating AD by modulating Aβ aggregation pathway. In this study, we performed diverse biophysical and biochemical methods to explore the inhibition of luteoloside on Aβ1-42 which is linked to AD. The results demonstrated that luteoloside efficiently prevented amyloid oligomerization and cross-β-sheet formation, reduced the rate of amyloid growth and the length of amyloid fibrils in a dose-dependent manner. Moreover, luteoloside was able to influence aggregation and conformation of Aβ1-42 during different fiber-forming phases, and it could disintegrate already preformed fibrils of Aβ1-42 and convert them into nontoxic aggregates. Furthermore, luteoloside protected cells from amyloid-induced cytotoxicity and hemolysis, and attenuated the level of reactive oxygen species (ROS). The molecular docking study showed that luteoloside interacted with Aβ1-42 mainly via Conventional Hydrogen Bond, Carbon Hydrogen Bond, Pi-Pi T-shaped, Pi-Alkyl and Pi-Anion, thereby possibly preventing it from forming the aggregates. These observations indicate that luteoloside, a natural anti-oxidant molecule, may be applicable as an effective inhibitor of Aβ, and promote further exploration of the therapeutic strategy against AD.
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Affiliation(s)
- Di Zhang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Juanli Zhang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Zhongying Ma
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Qianwen Wu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Meiyou Liu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Tingting Fan
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Likun Ding
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Danjun Ren
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Jingwen Wang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
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Huo Y, Zhao C, Wang Y, Wang S, Mu T, Du W. Roles of Apigenin and Nepetin in the Assembly Behavior and Cytotoxicity of Prion Neuropeptide PrP106-126. ACS Chem Neurosci 2024; 15:245-257. [PMID: 38133816 DOI: 10.1021/acschemneuro.3c00417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Development of potential inhibitors to prevent prion protein (PrP) fibrillation is a therapeutic strategy for prion diseases. The prion neuropeptide PrP106-126, a research model of abnormal PrP (PrPSc), presents similar physicochemical and biochemical characters to PrPSc, which is also a target of potential inhibitors against prion deposition. Many flavones have antioxidant, anti-inflammatory, and antibacterial properties, and they are applied in treating prion disorder and other amyloidosis as well. However, the inhibition mechanism of flavones on PrP106-126 fibrillation is still unclear. In the current work, apigenin and nepetin were used to suppress the aggregation of PrP106-126 and to alleviate the peptide-induced cytotoxicity. The results showed that apigenin and nepetin impeded the fibril formation of PrP106-126 and depolymerized the preformed fibrils. They were bound to PrP106-126 predominantly by hydrophobic and hydrogen bonding interactions. In addition, both flavones upregulated cell viability and decreased membrane leakage through reducing peptide oligomerization. The differences in inhibition and cell protection between the two small molecules were presumably attributed to the substitution of hydroxyl and methoxy groups in nepetin, which demonstrated the significant structure-function relationship of flavones with prion neuropeptide and the prospect of flavonoids as drug candidates against prion diseases.
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Affiliation(s)
- Yan Huo
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Cong Zhao
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yanan Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Shao Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Tiancheng Mu
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Weihong Du
- Department of Chemistry, Renmin University of China, Beijing 100872, China
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Huang J, Huang N, Mao Q, Shi J, Qiu Y. Natural bioactive compounds in Alzheimer's disease: From the perspective of type 3 diabetes mellitus. Front Aging Neurosci 2023; 15:1130253. [PMID: 37009462 PMCID: PMC10062602 DOI: 10.3389/fnagi.2023.1130253] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/20/2023] [Indexed: 03/18/2023] Open
Abstract
There is a close relationship between Alzheimer's disease (AD) and diabetes mellitus (DM), and the link between the two is often referred to as type 3 diabetes mellitus (T3DM). Many natural bioactive compounds have shown the potential to treat AD and diabetes. We mainly review the polyphenols represented by resveratrol (RES) and proanthocyanidins (PCs) and alkaloids represented by berberine (BBR) and Dendrobium nobile Lindl. alkaloids (DNLA) from the perspective of T3DM to review the neuroprotective effects and molecular mechanisms of natural compounds in AD.
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Affiliation(s)
- Juan Huang
- Department of Pharmacology and Chemical Biology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Lab of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, China
| | - Nanqu Huang
- National Drug Clinical Trial Institution, Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, Guizhou, China
| | - Qianhua Mao
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Lab of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
| | - Jingshan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Lab of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
- Jingshan Shi
| | - Yu Qiu
- Department of Pharmacology and Chemical Biology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Yu Qiu
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Gao Q, Ma R, Shi L, Wang S, Liang Y, Zhang Z. Anti-glycation and anti-inflammatory activities of anthocyanins from purple vegetables. Food Funct 2023; 14:2034-2044. [PMID: 36723267 DOI: 10.1039/d2fo03645b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Anthocyanins may be effective bioactive constituents to reduce the potential risk of chronic diseases induced by glycation and inflammation. In the present study, the anti-glycation and anti-inflammatory activities of anthocyanins derived from purple cabbage (PCA), purple sweet potato (PSP), purple corn (PCO) and gynura bicolor (GB) were evaluated. According to the results from the bovine serum albumin (BSA)-fructose and BSA-methylglyoxal (MGO) model, the inhibition effects of anthocyanins on non-enzymatic glycosylation not only acted on the intermediate stage, but also played a certain role in the entire non-enzymatic glycosylation process, among which anthocyanins from PCA exhibited the best inhibitory effect. The anthocyanins from all four purple vegetables could trap MGO effectively (p > 0.05). The anthocyanins also presented a good inhibitory effect on amyloid beta peptide (Aβ)1-42 fibrillation, even better than that of aminoguanidine (AG), in a thermal induction assay. Furthermore, anthocyanins from PCA, PSP, PCO and GB showed significant anti-inflammatory effects, inhibiting pro-inflammatory factor (i.e., NO and TNF-α) production, among which the anthocyanins from PCA and PSP exhibited a higher inhibition effect than the others. This is probably due to the suppression of the TLR4-mediated MyD88 signaling pathway in the lipopolysaccharide (LPS)-induced BV2 cells based on the western blot analysis. Anthocyanins from purple vegetables could be used as a value-added food ingredient for the food industry. Food fortification with anthocyanins might be a promising way to protect humans against various chronic diseases caused by glycation and inflammation.
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Affiliation(s)
- Qingchao Gao
- Jiangsu Key Laboratory for Food Quality and Safety, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Science, Nanjing, 210014, China.
| | - Rong Ma
- College of agriculture and animal husbandry, Qinghai University, Xining, 810016, China
| | - Lu Shi
- Jiangsu Key Laboratory for Food Quality and Safety, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Science, Nanjing, 210014, China.
| | - Shulin Wang
- College of agriculture and animal husbandry, Qinghai University, Xining, 810016, China
| | - Ying Liang
- Jiangsu Key Laboratory for Food Quality and Safety, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Science, Nanjing, 210014, China.
| | - Zhiyong Zhang
- Jiangsu Key Laboratory for Food Quality and Safety, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Science, Nanjing, 210014, China.
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5
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Sun H, Wang J. Novel perspective for protein-drug interaction analysis: atomic force microscope. Analyst 2023; 148:454-474. [PMID: 36398684 DOI: 10.1039/d2an01591a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Proteins are major drug targets, and drug-target interaction identification and analysis are important factors for drug discovery. Atomic force microscopy (AFM) is a powerful tool making it possible to image proteins with nanometric resolution and probe intermolecular forces under physiological conditions. We review recent studies conducted in the field of target protein drug discovery using AFM-based analysis technology, including drug-driven changes in nanomechanical properties of protein morphology and interactions. Underlying mechanisms (including thermodynamic and kinetic parameters) of the drug-target interaction and drug-modulating protein-protein interaction (PPI) on the surfaces of models or living cells are discussed. Furthermore, challenges and the outlook for the field are likewise discussed. Overall, this insight into the mechanical properties of protein-drug interactions provides an unprecedented information framework for rational drug discovery in the pharmaceutical field.
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Affiliation(s)
- Heng Sun
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Jianhua Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
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Recent Progress in Research on Mechanisms of Action of Natural Products against Alzheimer's Disease: Dietary Plant Polyphenols. Int J Mol Sci 2022; 23:ijms232213886. [PMID: 36430365 PMCID: PMC9695301 DOI: 10.3390/ijms232213886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022] Open
Abstract
Alzheimer's disease (AD) is an incurable degenerative disease of the central nervous system and the most common type of dementia in the elderly. Despite years of extensive research efforts, our understanding of the etiology and pathogenesis of AD is still highly limited. Nevertheless, several hypotheses related to risk factors for AD have been proposed. Moreover, plant-derived dietary polyphenols were also shown to exert protective effects against neurodegenerative diseases such as AD. In this review, we summarize the regulatory effects of the most well-known plant-derived dietary polyphenols on several AD-related molecular mechanisms, such as amelioration of oxidative stress injury, inhibition of aberrant glial cell activation to alleviate neuroinflammation, inhibition of the generation and promotion of the clearance of toxic amyloid-β (Aβ) plaques, inhibition of cholinesterase enzyme activity, and increase in acetylcholine levels in the brain. We also discuss the issue of bioavailability and the potential for improvement in this regard. This review is expected to encourage further research on the role of natural dietary plant polyphenols in the treatment of AD.
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Wang Y, Zheng T, Huo Y, Du W. Exploration of Isoquinoline Alkaloids as Potential Inhibitors against Human Islet Amyloid Polypeptide. ACS Chem Neurosci 2022; 13:2164-2175. [PMID: 35797238 DOI: 10.1021/acschemneuro.2c00206] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Type-2 diabetes mellitus (T2DM) is one of the most concerning public health problems because of its high incidence, multiple complications, and difficult treatment. Human islet amyloid polypeptide (hIAPP) is closely linked to T2DM because its abnormal self-assembly causes membrane damage and cell dysfunction. The development of potential inhibitors to prevent hIAPP fibrillation is a promising strategy for the intervention and treatment of diabetes. Natural isoquinoline alkaloids are used as effective medication that targets different biomolecules. Although studies explored the efficacy of berberine, jatrorrhizine, and chelerythrine in diabetes, the underlying mechanism remains unclear. Herein, three isoquinoline alkaloids are selected to reveal their roles in hIAPP aggregation, disaggregation, and cell protection. All three compounds displayed good inhibitory effects on peptide fibrillation, scattered the preformed fibrils into small oligomers and most monomers, and upregulated cell viability by reducing hIAPP oligomerization. Moreover, combined biophysical analyses indicated that the compounds affected the β-sheet structure and hydrophobicity of polypeptides significantly, and the benzo[c]phenanthridine structure of chelerythrine was beneficial to the inhibition of hIAPP aggregation and their hydrophobic interaction, compared with that of berberine and jatrorrhizine. Our work elaborated the effects of these alkaloids on hIAPP fibrillation and reveals a possible mechanism for these compounds against T2DM.
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Affiliation(s)
- Yanan Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Ting Zheng
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yan Huo
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Weihong Du
- Department of Chemistry, Renmin University of China, Beijing 100872, China
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Roham PH, Save SN, Sharma S. Human islet amyloid polypeptide: A therapeutic target for the management of type 2 diabetes mellitus. J Pharm Anal 2022; 12:556-569. [PMID: 36105173 PMCID: PMC9463490 DOI: 10.1016/j.jpha.2022.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 03/21/2022] [Accepted: 04/01/2022] [Indexed: 12/22/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) and other metabolic disorders are often silent and go unnoticed in patients because of the lack of suitable prognostic and diagnostic markers. The current therapeutic regimens available for managing T2DM do not reverse diabetes; instead, they delay the progression of diabetes. Their efficacy (in principle) may be significantly improved if implemented at earlier stages. The misfolding and aggregation of human islet amyloid polypeptide (hIAPP) or amylin has been associated with a gradual decrease in pancreatic β-cell function and mass in patients with T2DM. Hence, hIAPP has been recognized as a therapeutic target for managing T2DM. This review summarizes hIAPP's role in mediating dysfunction and apoptosis in pancreatic β-cells via induction of endoplasmic reticulum stress, oxidative stress, mitochondrial dysfunction, inflammatory cytokine secretion, autophagy blockade, etc. Furthermore, it explores the possibility of using intermediates of the hIAPP aggregation pathway as potential drug targets for T2DM management. Finally, the effects of common antidiabetic molecules and repurposed drugs; other hIAPP mimetics and peptides; small organic molecules and natural compounds; nanoparticles, nanobodies, and quantum dots; metals and metal complexes; and chaperones that have demonstrated potential to inhibit and/or reverse hIAPP aggregation and can, therefore, be further developed for managing T2DM have been discussed. Misfolded species of hIAPP form toxic oligomers in pancreatic β-cells. hIAPP amyloids has been detected in the pancreas of about 90% subjects with T2DM. Inhibitors of hIAPP aggregation can help manage T2DM.
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Triterpenoids impede the fibrillation and cytotoxicity of human islet amyloid polypeptide. Int J Biol Macromol 2022; 199:189-200. [PMID: 34973981 DOI: 10.1016/j.ijbiomac.2021.12.127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/13/2021] [Accepted: 12/19/2021] [Indexed: 01/05/2023]
Abstract
The inhibition of human islet amyloid polypeptide (hIAPP) deposition to block its toxicity is an important strategy for the prevention and treatment of type II diabetes mellitus (T2DM).Natural compounds with pharmacological properties and low toxicity can serve as a good point to discover potential inhibitors of protein misfolding, which may be useful for the treatment of various amyloidosis-related diseases. Previous studies have reported that triterpenoids, such as maslinic acid (MA) and momordicin I (MI), can modulate glucose metabolism partially by reducing insulin resistance. However, the internal antidiabetic mechanism of these triterpenoids remains unclear. In this study, we examined the inhibition and disaggregation of MAandits isomer MI on the fibrillation of hIAPP using various experimental and computational approaches. The assembly behaviors and peptide-induced cytotoxicity of hIAPP could be effectively resisted by MA and MI. Moreover, the interaction of the two triterpenoids with hIAPP displayed a spontaneous and exothermic process. Moreover, molecular dynamics simulation results of different peptides revealed that MA and MI could bind to Asn and other non-polar residues near the core C-terminal region and reduce the oligomerization of hIAPP. The binding affinity was predominantly contributed by hydrophobic, electrostatic and hydrogen bonding interactions. The present work provides valuable data for MA and MI to treat T2DM and amyloidosis-related diseases.
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Xu J, Wang Y, Zheng T, Huo Y, Du W. Biflavones inhibit the fibrillation and cytotoxicity of human islet amyloid polypeptide. J Mater Chem B 2022; 10:4650-4661. [DOI: 10.1039/d2tb00230b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biflavones are a kind of natural compounds with a variety of biological activities, which have the effects of reversing diabetes and neurodegenerative diseases. Human islet amyloid polypeptide (hIAPP) is closely...
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Chen S, Yin H, Zhang L, Liu R, Qi W, He Z, Su R. Oligomeric procyanidins inhibit insulin fibrillation by forming unstructured and off-pathway aggregates. RSC Adv 2021; 11:37290-37298. [PMID: 35496438 PMCID: PMC9043779 DOI: 10.1039/d1ra05397c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 10/27/2021] [Indexed: 01/08/2023] Open
Abstract
Effects of natural polyphenols on insulin fibrillation were compared. OPCs show potent inhibitory effects at all stages of insulin fibrillation and redirect the insulin aggregation pathway via the formation of unstructured, off-pathway aggregates.
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Affiliation(s)
- Shaohuang Chen
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Huiting Yin
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Lei Zhang
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Rui Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhimin He
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- School of Marine Science and Technology, Tianjin University, Tianjin 300072, China
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