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Wei Y, Zhang Y, Wang Z, Yang Z, Wang Z, Hao Y, Li G, Gao F, Ye G, Wang J, Liu J. New insight into molecular mechanisms of different polyphenols affecting Sirtuin 3 deacetylation activity. Int J Biol Macromol 2024; 270:132026. [PMID: 38704074 DOI: 10.1016/j.ijbiomac.2024.132026] [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: 02/21/2024] [Revised: 04/27/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024]
Abstract
Multiple phenolic substances have been shown to promote SIRT3 expression, however, few studies have focused on the effects of these phenolics on SIRT3 enzyme activity. This study constructed a variety of reaction systems to elucidate the mechanisms by which different polyphenols affect SIRT3 enzyme activity. The results showed that acP53317-320 was the most suitable substrate among the five acetylated peptide substrates (Kcat/Km = 74.85 ± 1.86 M-1•s-1). All the phenolic compounds involved in the experiment inhibited the enzymatic activity of SIRT3, and the lowest IC50 among them was quercetin (0.12 ± 0.01 mM) and the highest was piceatannol (1.29 ± 0.08 mM). Their inhibition types were mainly competitive and mixed. In addition, piceatannol was found to be a natural SIRT3 agonist by enzyme kinetic analysis and validation of deacetylation efficiency. This study will provide a useful reference for polyphenol modulation of SIRT3 dosage, as well as the development and application of polyphenol-based SIRT3 activators and agonists.
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Affiliation(s)
- Yulong Wei
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Yiman Zhang
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Ziyuan Wang
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Zihui Yang
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Zongwei Wang
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Yiming Hao
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Genying Li
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Fei Gao
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Gaoqi Ye
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China
| | - Jing Wang
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China.
| | - Jie Liu
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; National Center of Technology Innovation for Grain Industry (Comprehensive Utilization of Edible by-products), Beijing Technology and Business University, Beijing 100048, China.
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Klein MA, Denu JM. Biological and catalytic functions of sirtuin 6 as targets for small-molecule modulators. J Biol Chem 2020; 295:11021-11041. [PMID: 32518153 DOI: 10.1074/jbc.rev120.011438] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/08/2020] [Indexed: 12/14/2022] Open
Abstract
Sirtuin 6 (SIRT6) is a nuclear NAD+-dependent deacetylase of histone H3 that regulates genome stability and gene expression. However, nonhistone substrates and additional catalytic activities of SIRT6, including long-chain deacylation and mono-ADP-ribosylation of other proteins, have also been reported, but many of these noncanonical roles remain enigmatic. Genetic studies have revealed critical homeostatic cellular functions of SIRT6, underscoring the need to better understand which catalytic functions and molecular pathways are driving SIRT6-associated phenotypes. At the physiological level, SIRT6 activity promotes increased longevity by regulating metabolism and DNA repair. Recent work has identified natural products and synthetic small molecules capable of activating the inefficient in vitro deacetylase activity of SIRT6. Here, we discuss the cellular functions of SIRT6 with a focus on attributing its catalytic activity to its proposed biological functions. We cover the molecular architecture and catalytic mechanisms that distinguish SIRT6 from other NAD+-dependent deacylases. We propose that combining specific SIRT6 amino acid substitutions identified in enzymology studies and activity-selective compounds could help delineate SIRT6 functions in specific biological contexts and resolve the apparently conflicting roles of SIRT6 in processes such as tumor development. We further highlight the recent development of small-molecule modulators that provide additional biological insight into SIRT6 functions and offer therapeutic approaches to manage metabolic and age-associated diseases.
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Affiliation(s)
- Mark A Klein
- Wisconsin Institute for Discovery, University of Wisconsin, Madison, Wisconsin, USA.,Department of Biomolecular Chemistry, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, USA
| | - John M Denu
- Wisconsin Institute for Discovery, University of Wisconsin, Madison, Wisconsin, USA .,Department of Biomolecular Chemistry, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, USA
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Cuyàs E, Verdura S, Llorach-Parés L, Fernández-Arroyo S, Joven J, Martin-Castillo B, Bosch-Barrera J, Brunet J, Nonell-Canals A, Sanchez-Martinez M, Menendez JA. Metformin Is a Direct SIRT1-Activating Compound: Computational Modeling and Experimental Validation. Front Endocrinol (Lausanne) 2018; 9:657. [PMID: 30459716 PMCID: PMC6232372 DOI: 10.3389/fendo.2018.00657] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 10/19/2018] [Indexed: 01/28/2023] Open
Abstract
Metformin has been proposed to operate as an agonist of SIRT1, a nicotinamide adenine dinucleotide (NAD+)-dependent deacetylase that mimics most of the metabolic responses to calorie restriction. Herein, we present an in silico analysis focusing on the molecular docking and dynamic simulation of the putative interactions between metformin and SIRT1. Using eight different crystal structures of human SIRT1 protein, our computational approach was able to delineate the putative binding modes of metformin to several pockets inside and outside the central deacetylase catalytic domain. First, metformin was predicted to interact with the very same allosteric site occupied by resveratrol and other sirtuin-activating compounds (STATCs) at the amino-terminal activation domain of SIRT1. Second, metformin was predicted to interact with the NAD+ binding site in a manner slightly different to that of SIRT1 inhibitors containing an indole ring. Third, metformin was predicted to interact with the C-terminal regulatory segment of SIRT1 bound to the NAD+ hydrolysis product ADP-ribose, a "C-pocket"-related mechanism that appears to be essential for mechanism-based activation of SIRT1. Enzymatic assays confirmed that the net biochemical effect of metformin and other biguanides such as a phenformin was to improve the catalytic efficiency of SIRT1 operating in conditions of low NAD+ in vitro. Forthcoming studies should confirm the mechanistic relevance of our computational insights into how the putative binding modes of metformin to SIRT1 could explain its ability to operate as a direct SIRT1-activating compound. These findings might have important implications for understanding how metformin might confer health benefits via maintenance of SIRT1 activity during the aging process when NAD+ levels decline.
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Affiliation(s)
- Elisabet Cuyàs
- ProCURE (Program Against Cancer Therapeutic Resistance), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | - Sara Verdura
- ProCURE (Program Against Cancer Therapeutic Resistance), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | | | - Salvador Fernández-Arroyo
- Unitat de Recerca Biomèdica, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili (IISPV), Rovira i Virgili University, Reus, Spain
| | - Jorge Joven
- Unitat de Recerca Biomèdica, Hospital Universitari de Sant Joan, Institut d'Investigació Sanitària Pere Virgili (IISPV), Rovira i Virgili University, Reus, Spain
| | - Begoña Martin-Castillo
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
- Unit of Clinical Research, Catalan Institute of Oncology (ICO), Girona, Spain
| | - Joaquim Bosch-Barrera
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
- Department of Medical Sciences, Medical SchoolUniversity of Girona, Girona, Spain
- Medical Oncology, Catalan Institute of Oncology (ICO)Dr. Josep Trueta University Hospital, Girona, Spain
| | - Joan Brunet
- Medical Oncology, Catalan Institute of Oncology (ICO)Dr. Josep Trueta University Hospital, Girona, Spain
- Hereditary Cancer Programme, Catalan Institute of Oncology (ICO), Bellvitge Institute for Biomedical Research (IDIBELL)L'Hospitalet del Llobregat, Barcelona, Spain
- Hereditary Cancer Programme, Catalan Institute of Oncology (ICO)Girona Biomedical Research Institute (IDIBGI), Girona, Spain
| | | | | | - Javier A. Menendez
- ProCURE (Program Against Cancer Therapeutic Resistance), Metabolism and Cancer Group, Catalan Institute of Oncology, Girona, Spain
- Girona Biomedical Research Institute (IDIBGI), Girona, Spain
- *Correspondence: Javier A. Menendez ;
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