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Shoji Y, Terashima Y, Ohkubo K, Ito H, Maruyama K, Fukuzumi S, Nakanishi I. Scandium Ion-Promoted Electron-Transfer Disproportionation of 2-Phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-Oxide (PTIO •) in Acetonitrile and Its Regeneration Induced by Water. Int J Mol Sci 2024; 25:4417. [PMID: 38674002 PMCID: PMC11050215 DOI: 10.3390/ijms25084417] [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: 03/20/2024] [Revised: 04/09/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
2-Phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide (PTIO•), a persistent nitronyl nitroxide radical, has been used for the detection and trapping of nitric oxide, as a redox mediator for batteries, for the activity estimation of antioxidants, and so on. However, there is no report on the reactivity of PTIO• in the presence of redox-inactive metal ions. In this study, it is demonstrated that the addition of scandium triflate, Sc(OTf)3 (OTf = OSO2CF3), to an acetonitrile (MeCN) solution of PTIO• resulted in an electron-transfer disproportionation to generate the corresponding cation (PTIO+) and anion (PTIO-), the latter of which is suggested to be stabilized by Sc3+ to form [(PTIO)Sc]2+. The decay of the absorption band at 361 nm due to PTIO•, monitored using a stopped-flow technique, obeyed second-order kinetics. The second-order rate constant for the disproportionation, thus determined, increased with increasing the Sc(OTf)3 concentration to reach a constant value. A drastic change in the cyclic voltammogram recorded for PTIO• in deaerated MeCN containing 0.10 M Bu4NClO4 was also observed upon addition of Sc(OTf)3, suggesting that the large positive shift of the one-electron reduction potential of PTIO• (equivalent to the one-electron oxidation potential of PTIO-) in the presence of Sc(OTf)3 may result in the disproportionation. When H2O was added to the PTIO•-Sc(OTf)3 system in deaerated MeCN, PTIO• was completely regenerated. It is suggested that the complex formation of Sc3+ with H2O may weaken the interaction between PTIO- and Sc3+, leading to electron-transfer comproportionation to regenerate PTIO•. The reversible disproportionation of PTIO• was also confirmed by electron paramagnetic resonance (EPR) spectroscopy.
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Grants
- JP18K06620 Ministry of Education, Culture, Sports, Science and Technology
- JP20H02779 Ministry of Education, Culture, Sports, Science and Technology
- JP20H04819 Ministry of Education, Culture, Sports, Science and Technology
- JP18H04650 Ministry of Education, Culture, Sports, Science and Technology
- JP17H03010 Ministry of Education, Culture, Sports, Science and Technology
- JP16H02268 Ministry of Education, Culture, Sports, Science and Technology
- JP23K04686 Ministry of Education, Culture, Sports, Science and Technology
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Affiliation(s)
- Yoshimi Shoji
- Quantum RedOx Chemistry Team, Institute for Quantum Life Science (iQLS), Quantum Life and Medical Science Directorate (QLMS), National Institutes for Quantum Science and Technology (QST), Chiba-shi 263-8555, Chiba, Japan; (Y.S.); (H.I.)
| | - Yuri Terashima
- Environmental Radiation Effects Research Group, Department of Radiation Measurement and Dose Assessment, Institute for Radiological Science (NIRS), Quantum Life and Medical Science Directorate (QLMS), National Institutes for Quantum Science and Technology (QST), Chiba-shi 263-8555, Chiba, Japan; (Y.T.); (K.M.)
| | - Kei Ohkubo
- Institute for Advanced Co-Creation Studies, Open and Transdisciplinary Research Initiatives, Osaka University, Suita 565-0871, Osaka, Japan;
| | - Hiromu Ito
- Quantum RedOx Chemistry Team, Institute for Quantum Life Science (iQLS), Quantum Life and Medical Science Directorate (QLMS), National Institutes for Quantum Science and Technology (QST), Chiba-shi 263-8555, Chiba, Japan; (Y.S.); (H.I.)
| | - Kouichi Maruyama
- Environmental Radiation Effects Research Group, Department of Radiation Measurement and Dose Assessment, Institute for Radiological Science (NIRS), Quantum Life and Medical Science Directorate (QLMS), National Institutes for Quantum Science and Technology (QST), Chiba-shi 263-8555, Chiba, Japan; (Y.T.); (K.M.)
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Republic of Korea;
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Ibaraki, Japan
| | - Ikuo Nakanishi
- Quantum RedOx Chemistry Team, Institute for Quantum Life Science (iQLS), Quantum Life and Medical Science Directorate (QLMS), National Institutes for Quantum Science and Technology (QST), Chiba-shi 263-8555, Chiba, Japan; (Y.S.); (H.I.)
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Li S, Li X, Yang X, Lei Y, He M, Xiang X, Wu Q, Liu H, Wang J, Wang Q. Corilagin enhances the anti-tumor activity of 5-FU by downregulating the expression of GRP 78. Sci Rep 2023; 13:22661. [PMID: 38114593 PMCID: PMC10730900 DOI: 10.1038/s41598-023-49604-1] [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: 06/28/2023] [Accepted: 12/10/2023] [Indexed: 12/21/2023] Open
Abstract
Colorectal cancer is one of the most common malignancies worldwide. Although initially effective, patients who receive chemotherapy ultimately experience various complications and develop chemo-resistance, leading to cancer recurrence. Therefore, we aimed to find a drug with good efficacy and low toxicity that could enhance the treatment with 5-Fluorouracil (a commonly used clinical drug) and reduce its dosing. Corilagin, an anti-tumor natural product, has received widespread attention. Glucose regulated protein 78 (GRP78) is overexpressed in colorectal cancer cells and plays a key role in the proliferation, migration and drug resistance of cancer cells. Importantly, GRP78 can affect the apoptosis induced by 5-fluorouracil in CRC cells. In the present study, we determined the synergistic anti-tumor activity of the combination treatment by cell proliferation assay, apoptosis assay, fluorescent staining, cell cycle analysis, WB and PCR assays. This synergistic effect was associated with S-phase blockade, intracellular reactive oxygen species production and downregulation of GRP78. Taken together, our results indicate that Corilagin acts as a potentiator of 5-fluorouracil and may have therapeutic potential for patients with CRC.
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Grants
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
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Affiliation(s)
- Simin Li
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Xinquan Li
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Xiliang Yang
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Yumeng Lei
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Mingxin He
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Xiaochen Xiang
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Qingming Wu
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Hongyun Liu
- School of Basic Medicine, Hubei University of Science and Technology, Wuhan, 437100, China.
| | - Jiadun Wang
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China.
| | - Qiang Wang
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China.
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Wang Y, Li B, Liu G, Han Q, Diao Y, Liu J. Corilagin attenuates intestinal ischemia/reperfusion injury in mice by inhibiting ferritinophagy-mediated ferroptosis through disrupting NCOA4-ferritin interaction. Life Sci 2023; 334:122176. [PMID: 37858718 DOI: 10.1016/j.lfs.2023.122176] [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: 08/24/2023] [Revised: 10/03/2023] [Accepted: 10/11/2023] [Indexed: 10/21/2023]
Abstract
AIMS Intestinal ischemia reperfusion (II/R) is a common clinical emergency. Ferroptosis is reported to play a role in II/R injury. Our previous studies revealed that corilagin significantly attenuates intestinal ischemia/reperfusion injuries. However, the underlying molecular mechanism is unclear and requires further study. MATERIALS AND METHODS DAO, GSSG/T-GSH, MDA, and Fe2+ were measured by assay kits, 4-HNE was assessed by IHC, and 15-LOX was measured by ELISA. Mitochondrial damage was observed by TEM and cellular oxidation levels were detected by C11-BODIPY 581/591 and DHE probes. LC3, p62, Beclin1, ACSL4, GPX4, NCOA4, and ferritin expression were examined by WB in vivo and in vitro. IF, co-IF, q-PCR, and constructed NCOA4-knock-down IEC-6 cells were used to evaluate the role of NCOA4 in the effect of corilagin against II/R injury. Temporal and nucleoplasmic variations with or without corilagin were observed by WB. Co-IP and molecular docking were used to investigate the NCOA4-ferritin interaction. KEY FINDINGS Corilagin attenuated II/R-induced ferroptosis both in vitro and in vivo. Further study revealed that the anti-ferroptosis bioactivity of corilagin might be due to the modulation of iron homeostasis via inhibition of ferritinophagy in an NCOA4-dependent manner. SIGNIFICANCE Corilagin might be a potential therapeutic agent for II/R-induced tissue injury.
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Affiliation(s)
- Yunxiang Wang
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Bin Li
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Dalian Anti-Infective Traditional Chinese Medicine Development Engineering Technology Research Center, Dalian 116044, China
| | - Guanting Liu
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Qipeng Han
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Yunpeng Diao
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Dalian Anti-Infective Traditional Chinese Medicine Development Engineering Technology Research Center, Dalian 116044, China.
| | - Jing Liu
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Dalian Anti-Infective Traditional Chinese Medicine Development Engineering Technology Research Center, Dalian 116044, China.
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Li X, Ouyang X, Chen B, Liu S, Zeng J. Linkage and Stereochemistry Characters of Phenolic Antioxidant Product Formation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:5382-5390. [PMID: 36693163 DOI: 10.1021/acs.jafc.2c06563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The present study developed a smart and novel strategy to elucidate the linkage and stereochemistry characters during phenolic antioxidant product formation. A series of phenolic isomers or analogues were treated with 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide radical, to create 16 antioxidant dimerization reactions in aqueous solution. The products were rapidly identified by ultraperformance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass-spectrometry. Through a systematic function-structure relationship analysis of these reactions and theoretical calculations, it is concluded that the phenolic antioxidant product is formed via linear linkage or furanocyclic linkage. The linear linkage is fulfilled via a radical coupling and controlled by the O-O linkage exclusion, meta-linkage exclusion, and catechol-activated principles. However, when an exocyclic π-bond conjugates with the phenolic core and is affixed at the -OH para-position, the furanocyclic linkage may occur via a subsequent intramolecular Michael addition. The intramolecular addition always lacks Re-attack to show "α,β diastereoselectivity." The α,β diastereoselectivity is the stereochemistry character of furanocyclic linkage during phenolic antioxidant product formation. All these novel findings can benefit not only the field food science but also other fields as well.
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Affiliation(s)
- Xican Li
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou Higher Education Mega Center, Waihuang East Road No. 232, Guangzhou510006, People's Republic of China
| | - Xiaojian Ouyang
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou Higher Education Mega Center, Waihuang East Road No. 232, Guangzhou510006, People's Republic of China
| | - Ban Chen
- School of Biological Engineering and Food, Hubei University of Technology, Wuhan430068, People's Republic of China
| | - Shuqin Liu
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou Higher Education Mega Center, Waihuang East Road No. 232, Guangzhou510006, People's Republic of China
| | - Jingyuan Zeng
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou Higher Education Mega Center, Waihuang East Road No. 232, Guangzhou510006, People's Republic of China
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Khalifa J, Bourgault S, Gaudreault R. Interactions of Polyphenolic Gallotannins with Amyloidogenic Polypeptides Associated with Alzheimer's Disease: From Molecular Insights to Physiological Significance. Curr Alzheimer Res 2023; 20:603-617. [PMID: 38270140 DOI: 10.2174/0115672050277001231213073043] [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: 08/31/2023] [Revised: 10/30/2023] [Accepted: 11/10/2023] [Indexed: 01/26/2024]
Abstract
Polyphenols are natural compounds abundantly found in plants. They are known for their numerous benefits to human health, including antioxidant properties and anti-inflammatory activities. Interestingly, many studies have revealed that polyphenols can also modulate the formation of amyloid fibrils associated with disease states and can prevent the formation of cytotoxic oligomer species. In this review, we underline the numerous effects of four hydrolysable gallotannins (HGTs) with high conformational flexibility, low toxicity, and multi-targeticity, e.g., tannic acid, pentagalloyl glucose, corilagin, and 1,3,6-tri-O-galloyl-β-D-glucose, on the aggregation of amyloidogenic proteins associated with the Alzheimer's Disease (AD). These HGTs have demonstrated interesting abilities to reduce, at different levels, the formation of amyloid fibrils involved in AD, including those assembled from the amyloid β-peptide, the tubulin-associated unit, and the islet amyloid polypeptide. HGTs were also shown to disassemble pre-formed fibrils and to diminish cognitive decline in mice. Finally, this manuscript highlights the importance of further investigating these naturally occurring HGTs as promising scaffolds to design molecules that can interfere with the formation of proteotoxic oligomers and aggregates associated with AD pathogenesis.
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Affiliation(s)
- Jihane Khalifa
- Département de Chimie, Université du Québec à Montréal, 2101 Rue Jeanne-Mance, Montréal, QC, H2X 2J6, Canada
- Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montréal, QC, H2X 3Y7, Canada
| | - Steve Bourgault
- Département de Chimie, Université du Québec à Montréal, 2101 Rue Jeanne-Mance, Montréal, QC, H2X 2J6, Canada
- Quebec Network for Research on Protein Function, Engineering and Applications, PROTEO, Canada
| | - Roger Gaudreault
- Département de Chimie, Université du Québec à Montréal, 2101 Rue Jeanne-Mance, Montréal, QC, H2X 2J6, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montréal, QC, H2X 3Y7, Canada
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Molecular docking studies of phytochemicals from Terminalia chebula for identification of potential multi-target inhibitors of SARS-CoV-2 proteins. J Ayurveda Integr Med 2022; 13:100557. [PMID: 35185301 PMCID: PMC8847108 DOI: 10.1016/j.jaim.2022.100557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 12/14/2021] [Accepted: 01/31/2022] [Indexed: 12/23/2022] Open
Abstract
Background The COVID-19 caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has emerged as a global pandemic claiming more than 6 million lives worldwide as of 16 March 2022. Till date, no medicine has been developed which is proved to have 100% efficiency in combating against this deadly disease. We focussed on ayurvedic medicines to identify drug-like candidates for treatment and management of COVID-19. Among all ayurvedic medicines, we were interested in Terminalia chebula (T. chebula), as it is known to have antibacterial, antifungal, antiviral, antioxidant and anti-inflammatory properties. Objectives In this study, we evaluated potential inhibitory effects of phytochemicals from T. chebula against eight structural and functional proteins of SARS-CoV-2. Material and methods We performed blind molecular docking studies using fifteen phytochemicals from T. chebula against the proteins of SARS-CoV-2. The three-dimensional proteins structures were analysed and potential drug-binding sites were identified. The drug-likeness properties of the ligands were assessed as well. Results Analysing the docking results by comparing Atomic Contact Energy (ACE) and intermolecular interactions along with assessment of ADME/T properties identified 1,3,6-Trigalloyl glucose (−332.14 ± 55.74 kcal/mol), Beta-Sitosterol (−324.75 ± 36.98 kcal/mol) and Daucosterol (−335.67 ± 104.79 kcal/mol) as most promising candidates which exhibit significantly high inhibition efficiency against all eight protein targets. Conclusions We believe that our study has the potential to help the scientific communities to develop multi-target drugs from T. chebula to combat against the deadly pathogen of COVID-19, with the support of extensive wet lab analysis.
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Gaudreault R, Hervé V, van de Ven TGM, Mousseau N, Ramassamy C. Polyphenol-Peptide Interactions in Mitigation of Alzheimer's Disease: Role of Biosurface-Induced Aggregation. J Alzheimers Dis 2021; 81:33-55. [PMID: 33749653 DOI: 10.3233/jad-201549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Alzheimer's disease (AD) is the most common age-related neurodegenerative disorder, responsible for nearly two-thirds of all dementia cases. In this review, we report the potential AD treatment strategies focusing on natural polyphenol molecules (green chemistry) and more specifically on the inhibition of polyphenol-induced amyloid aggregation/disaggregation pathways: in bulk and on biosurfaces. We discuss how these pathways can potentially alter the structure at the early stages of AD, hence delaying the aggregation of amyloid-β (Aβ) and tau. We also discuss multidisciplinary approaches, combining experimental and modelling methods, that can better characterize the biochemical and biophysical interactions between proteins and phenolic ligands. In addition to the surface-induced aggregation, which can occur on surfaces where protein can interact with other proteins and polyphenols, we suggest a new concept referred as "confinement stability". Here, on the contrary, the adsorption of Aβ and tau on biosurfaces other than Aβ- and tau-fibrils, e.g., red blood cells, can lead to confinement stability that minimizes the aggregation of Aβ and tau. Overall, these mechanisms may participate directly or indirectly in mitigating neurodegenerative diseases, by preventing protein self-association, slowing down the aggregation processes, and delaying the progression of AD.
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Affiliation(s)
- Roger Gaudreault
- Department of Physics, Université de Montréal, Montreal, QC, Canada
| | - Vincent Hervé
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, QC, Canada
| | | | - Normand Mousseau
- Department of Physics, Université de Montréal, Montreal, QC, Canada
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Chen B, Li X, Ouyang X, Liu J, Liu Y, Chen D. Comparison of Ferroptosis-Inhibitory Mechanisms between Ferrostatin-1 and Dietary Stilbenes (Piceatannol and Astringin). Molecules 2021; 26:1092. [PMID: 33669598 PMCID: PMC7922211 DOI: 10.3390/molecules26041092] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/10/2021] [Accepted: 02/10/2021] [Indexed: 12/17/2022] Open
Abstract
Synthetic arylamines and dietary phytophenolics could inhibit ferroptosis, a recently discovered regulated cell death process. However, no study indicates whether their inhibitory mechanisms are inherently different. Herein, the ferroptosis-inhibitory mechanisms of selected ferrostatin-1 (Fer-1) and two dietary stilbenes (piceatannol and astringin) were compared. Cellular assays suggested that the ferroptosis-inhibitory and electron-transfer potential levels decreased as follows: Fer-1 >> piceatannol > astringin; however, the hydrogen-donating potential had an order different from that observed by the antioxidant experiments and quantum chemistry calculations. Quantum calculations suggested that Fer-1 has a much lower ionization potential than the two stilbenes, and the aromatic N-atoms were surrounded by the largest electron clouds. By comparison, the C4'O-H groups in the two stilbenes exhibited the lowest bond disassociation enthalpies. Finally, the three were found to produce corresponding dimer peaks through ultra-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry analysis. In conclusion, Fer-1 mainly depends on the electron transfer of aromatic N-atoms to construct a redox recycle. However, piceatannol and astringin preferentially donate hydrogen atoms at the 4'-OH position to mediate the conventional antioxidant mechanism that inhibits ferroptosis, and to ultimately form dimers. These results suggest that dietary phytophenols may be safer ferroptosis inhibitors for balancing normal and ferroptotic cells than arylamines with high electron-transfer potential.
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Affiliation(s)
- Ban Chen
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China; (B.C.); (X.O.)
| | - Xican Li
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China; (B.C.); (X.O.)
| | - Xiaojian Ouyang
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China; (B.C.); (X.O.)
| | - Jie Liu
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China;
- The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yangping Liu
- The Fourth Clinical Medical College, Guangzhou University of Chinese Medicine, Waihuan East Road No. 232, Guangzhou Higher Education Mega Center, Guangzhou 510006, China;
| | - Dongfeng Chen
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China;
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9
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Liu Y, Li X, Hua Y, Zhang W, Zhou X, He J, Chen D. Tannic Acid as a Natural Ferroptosis Inhibitor: Mechanisms and Beneficial Role of 3’‐
O
‐Galloylation. ChemistrySelect 2021. [DOI: 10.1002/slct.202004392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yangping Liu
- The Fourth Clinical Medical College Guangzhou University of Chinese Medicine Waihuan East Road No. 232, Guangzhou Higher Education Mega Center Guangzhou China 510006
| | - Xican Li
- School of Chinese Herbal Medicine Guangzhou University of Chinese Medicine Waihuan East Road No. 232, Guangzhou Higher Education Mega Center Guangzhou China 510006
| | - Yujie Hua
- School of Chinese Herbal Medicine Guangzhou University of Chinese Medicine Waihuan East Road No. 232, Guangzhou Higher Education Mega Center Guangzhou China 510006
| | - Wenhui Zhang
- School of Chinese Herbal Medicine Guangzhou University of Chinese Medicine Waihuan East Road No. 232, Guangzhou Higher Education Mega Center Guangzhou China 510006
| | - Xianxi Zhou
- School of Basic Medical Science Guangzhou University of Chinese Medicine Guangzhou China 510006
| | - Jianfeng He
- School of Chinese Herbal Medicine Guangzhou University of Chinese Medicine Waihuan East Road No. 232, Guangzhou Higher Education Mega Center Guangzhou China 510006
| | - Dongfeng Chen
- School of Basic Medical Science Guangzhou University of Chinese Medicine Guangzhou China 510006
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10
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Zhang W, Li X, Hua Y, Li Z, Chen B, Liu A, Lu W, Zhao X, Diao Y, Chen D. Antioxidant product analysis of Hulu Tea ( Tadehagi triquetrum). NEW J CHEM 2021. [DOI: 10.1039/d1nj02639a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phytophenols from Hulu Tea can produce not only homodimers but also a heterodimer through the antioxidant activity.
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Affiliation(s)
- Wenhui Zhang
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Xican Li
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yujie Hua
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Zhen Li
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Ban Chen
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Aijun Liu
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Wenbiao Lu
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Xiaojun Zhao
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yuanming Diao
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Dongfeng Chen
- School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
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11
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Pinto IC, Seibert JB, Pinto LS, Santos VR, de Sousa RF, Sousa LRD, Amparo TR, Dos Santos VMR, do Nascimento AM, de Souza GHB, Vasconcellos WA, Vieira PMA, Andrade ÂL. Preparation of glass-ionomer cement containing ethanolic Brazilian pepper extract (Schinus terebinthifolius Raddi) fruits: chemical and biological assays. Sci Rep 2020; 10:22312. [PMID: 33339861 PMCID: PMC7749175 DOI: 10.1038/s41598-020-79257-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 12/03/2020] [Indexed: 12/11/2022] Open
Abstract
Plants may contain beneficial or potentially dangerous substances to humans. This study aimed to prepare and evaluate a new drug delivery system based on a glass-ionomer-Brazilian pepper extract composite, to check for its activity against pathogenic microorganisms of the oral cavity, along with its in vitro biocompatibility. The ethanolic Brazilian pepper extract (BPE), the glass-ionomer cement (GIC) and the composite GIC-BPE were characterized by scanning electron microscopy, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), and thermal analysis. The BPE compounds were identified by UPLC–QTOF–MS/MS. The release profile of flavonoids and the mechanical properties of the GIC-BPE composite were assessed. The flavonoids were released through a linear mechanism governing the diffusion for the first 48 h, as evidenced by the Mt/M∞ relatively to \documentclass[12pt]{minimal}
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\begin{document}$$\sqrt t$$\end{document}t, at a diffusion coefficient of 1.406 × 10–6 cm2 s−1. The ATR-FTIR analysis indicated that a chemical bond between the GIC and BPE components may have occurred, but the compressive strength of GIC-BPE does not differ significantly from that of this glass-ionomer. The GIC-BPE sample revealed an ample bacterial activity at non-cytotoxic concentrations for the human fibroblast MRC-5 cells. These results suggest that the prepared composite may represent an alternative agent for endodontic treatment.
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Affiliation(s)
- Isabelle C Pinto
- Departamento de Química, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil
| | - Janaína B Seibert
- Departamento de Química, Universidade Federal de São Carlos, UFSCar, São Carlos, 13565-905, Brazil
| | - Luciano S Pinto
- Departamento de Química, Universidade Federal de São Carlos, UFSCar, São Carlos, 13565-905, Brazil
| | - Vagner R Santos
- Departamento de Clínica, Patologia e Cirurgias Odontológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, 31270-901, Brazil
| | - Rafaela F de Sousa
- Departamento de Química, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil
| | - Lucas R D Sousa
- Departamento de Química, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil.,Departamento de Ciências Biológicas, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil
| | - Tatiane R Amparo
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil
| | - Viviane M R Dos Santos
- Departamento de Química, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil
| | - Andrea M do Nascimento
- Departamento de Química, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil
| | | | - Walisson A Vasconcellos
- Departamento de Odontologia Restauradora, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, 31270-901, Brazil
| | - Paula M A Vieira
- Departamento de Ciências Biológicas, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil
| | - Ângela L Andrade
- Departamento de Química, Universidade Federal de Ouro Preto, UFOP, Ouro Preto, 35400-000, Brazil.
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