1
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Hao W, Jialong Z, Jiuzhi Y, Yang Y, Chongning L, Jincai L. ADP-ribosylation, a multifaceted modification: Functions and mechanisms in aging and aging-related diseases. Ageing Res Rev 2024; 98:102347. [PMID: 38815933 DOI: 10.1016/j.arr.2024.102347] [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: 02/02/2024] [Revised: 05/18/2024] [Accepted: 05/23/2024] [Indexed: 06/01/2024]
Abstract
Aging, a complex biological process, plays key roles the development of multiple disorders referred as aging-related diseases involving cardiovascular diseases, stroke, neurodegenerative diseases, cancers, lipid metabolism-related diseases. ADP-ribosylation is a reversible modification onto proteins and nucleic acids to alter their structures and/or functions. Growing evidence support the importance of ADP-ribosylation and ADP-ribosylation-associated enzymes in aging and age-related diseases. In this review, we summarized ADP-ribosylation-associated proteins including ADP-ribosyl transferases, the ADP-ribosyl hydrolyses and ADP-ribose binding domains. Furthermore, we outlined the latest knowledge about regulation of ADP-ribosylation in the pathogenesis and progression of main aging-related diseases, organism aging and cellular senescence, and we also speculated the underlying mechanisms to better disclose this novel molecular network. Moreover, we discussed current issues and provided an outlook for future research, aiming to revealing the unknown bio-properties of ADP-ribosylation, and establishing a novel therapeutic perspective in aging-related diseases and health aging via targeting ADP-ribosylation.
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Affiliation(s)
- Wu Hao
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
| | - Zhao Jialong
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
| | - Yuan Jiuzhi
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
| | - Yu Yang
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
| | - Lv Chongning
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China; Liaoning Provincial Key Laboratory of TCM Resources Conservation and Development, Shenyang Pharmaceutical University, Shenyang, China
| | - Lu Jincai
- College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China; Liaoning Provincial Key Laboratory of TCM Resources Conservation and Development, Shenyang Pharmaceutical University, Shenyang, China.
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2
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Divya KP, Kanwar N, Anuranjana PV, Kumar G, Beegum F, George KT, Kumar N, Nandakumar K, Kanwal A. SIRT6 in Regulation of Mitochondrial Damage and Associated Cardiac Dysfunctions: A Possible Therapeutic Target for CVDs. Cardiovasc Toxicol 2024; 24:598-621. [PMID: 38689163 DOI: 10.1007/s12012-024-09858-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 04/05/2024] [Indexed: 05/02/2024]
Abstract
Cardiovascular diseases (CVDs) can be described as a global health emergency imploring possible prevention strategies. Although the pathogenesis of CVDs has been extensively studied, the role of mitochondrial dysfunction in CVD development has yet to be investigated. Diabetic cardiomyopathy, ischemic-reperfusion injury, and heart failure are some of the CVDs resulting from mitochondrial dysfunction Recent evidence from the research states that any dysfunction of mitochondria has an impact on metabolic alteration, eventually causes the death of a healthy cell and therefore, progressively directing to the predisposition of disease. Cardiovascular research investigating the targets that both protect and treat mitochondrial damage will help reduce the risk and increase the quality of life of patients suffering from various CVDs. One such target, i.e., nuclear sirtuin SIRT6 is strongly associated with cardiac function. However, the link between mitochondrial dysfunction and SIRT6 concerning cardiovascular pathologies remains poorly understood. Although the Role of SIRT6 in skeletal muscles and cardiomyocytes through mitochondrial regulation has been well understood, its specific role in mitochondrial maintenance in cardiomyocytes is poorly determined. The review aims to explore the domain-specific function of SIRT6 in cardiomyocytes and is an effort to know how SIRT6, mitochondria, and CVDs are related.
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Affiliation(s)
- K P Divya
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Navjot Kanwar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab, Technical University, Bathinda, Punjab, 151005, India
| | - P V Anuranjana
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Gautam Kumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
- School of Pharmacy, Sharda University, Greater Noida, Uttar Pradesh, 201310, India
| | - Fathima Beegum
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Krupa Thankam George
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India
| | - Nitesh Kumar
- Department of Pharmacology, National Institute of Pharmaceutical Educations and Research, Hajipur, Bihar, 844102, India
| | - K Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, 576104, India.
| | - Abhinav Kanwal
- Department of Pharmacology, All India Institute of Medical Sciences, Bathinda, Punjab, 151005, India.
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3
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Li L, Zeng J, Zhang X, Feng Y, Lei JH, Xu X, Chen Q, Deng CX. Sirt6 ablation in the liver causes fatty liver that increases cancer risky by upregulating Serpina12. EMBO Rep 2024; 25:1361-1386. [PMID: 38332150 PMCID: PMC10933290 DOI: 10.1038/s44319-024-00071-3] [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: 07/20/2023] [Revised: 12/11/2023] [Accepted: 01/09/2024] [Indexed: 02/10/2024] Open
Abstract
Non-alcoholic fatty liver disease is a chronic liver abnormality that exhibits high variability and can lead to liver cancer in advanced stages. Hepatic ablation of SIRT6 results in fatty liver disease, yet the potential mechanism of SIRT6 deficiency, particularly in relation to downstream mediators for NAFLD, remains elusive. Here we identify Serpina12 as a key gene regulated by Sirt6 that plays a crucial function in energy homeostasis. Specifically, Sirt6 suppresses Serpina12 expression through histone deacetylation at its promoter region, after which the transcription factor, Cebpα, binds to and regulates its expression. Sirt6 deficiency results in an increased expression of Serpina12 in hepatocytes, which enhances insulin signaling and promotes lipid accumulation. Importantly, CRISPR-Cas9 mediated Serpina12 knockout in the liver ameliorated fatty liver disease caused by Sirt6 ablation. Finally, we demonstrate that Sirt6 functions as a tumor suppressor in the liver, and consequently, deletion of Sirt6 in the liver leads to not only the spontaneous development of tumors but also enhanced tumorigenesis in response to DEN treatment or under conditions of obesity.
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Affiliation(s)
- Licen Li
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Jianming Zeng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Xin Zhang
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Yangyang Feng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Josh Haipeng Lei
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Xiaoling Xu
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
- MOE Frontier Science Centre for Precision Oncology, University of Macau, Taipa, Macau SAR, 999078, China
| | - Qiang Chen
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China.
- MOE Frontier Science Centre for Precision Oncology, University of Macau, Taipa, Macau SAR, 999078, China.
| | - Chu-Xia Deng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China.
- MOE Frontier Science Centre for Precision Oncology, University of Macau, Taipa, Macau SAR, 999078, China.
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4
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Ghanem MS, Caffa I, Monacelli F, Nencioni A. Inhibitors of NAD + Production in Cancer Treatment: State of the Art and Perspectives. Int J Mol Sci 2024; 25:2092. [PMID: 38396769 PMCID: PMC10889166 DOI: 10.3390/ijms25042092] [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: 12/31/2023] [Revised: 01/29/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
The addiction of tumors to elevated nicotinamide adenine dinucleotide (NAD+) levels is a hallmark of cancer metabolism. Obstructing NAD+ biosynthesis in tumors is a new and promising antineoplastic strategy. Inhibitors developed against nicotinamide phosphoribosyltransferase (NAMPT), the main enzyme in NAD+ production from nicotinamide, elicited robust anticancer activity in preclinical models but not in patients, implying that other NAD+-biosynthetic pathways are also active in tumors and provide sufficient NAD+ amounts despite NAMPT obstruction. Recent studies show that NAD+ biosynthesis through the so-called "Preiss-Handler (PH) pathway", which utilizes nicotinate as a precursor, actively operates in many tumors and accounts for tumor resistance to NAMPT inhibitors. The PH pathway consists of three sequential enzymatic steps that are catalyzed by nicotinate phosphoribosyltransferase (NAPRT), nicotinamide mononucleotide adenylyltransferases (NMNATs), and NAD+ synthetase (NADSYN1). Here, we focus on these enzymes as emerging targets in cancer drug discovery, summarizing their reported inhibitors and describing their current or potential exploitation as anticancer agents. Finally, we also focus on additional NAD+-producing enzymes acting in alternative NAD+-producing routes that could also be relevant in tumors and thus become viable targets for drug discovery.
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Affiliation(s)
- Moustafa S. Ghanem
- Department of Internal Medicine and Medical Specialties (DIMI), University of Genoa, Viale Benedetto XV 6, 16132 Genoa, Italy; (I.C.); (F.M.)
| | - Irene Caffa
- Department of Internal Medicine and Medical Specialties (DIMI), University of Genoa, Viale Benedetto XV 6, 16132 Genoa, Italy; (I.C.); (F.M.)
- Ospedale Policlinico San Martino IRCCS, Largo Rosanna Benzi 10, 16132 Genova, Italy
| | - Fiammetta Monacelli
- Department of Internal Medicine and Medical Specialties (DIMI), University of Genoa, Viale Benedetto XV 6, 16132 Genoa, Italy; (I.C.); (F.M.)
- Ospedale Policlinico San Martino IRCCS, Largo Rosanna Benzi 10, 16132 Genova, Italy
| | - Alessio Nencioni
- Department of Internal Medicine and Medical Specialties (DIMI), University of Genoa, Viale Benedetto XV 6, 16132 Genoa, Italy; (I.C.); (F.M.)
- Ospedale Policlinico San Martino IRCCS, Largo Rosanna Benzi 10, 16132 Genova, Italy
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5
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Gu M, Ren B, Fang Y, Ren J, Liu X, Wang X, Zhou F, Xiao R, Luo X, You L, Zhao Y. Epigenetic regulation in cancer. MedComm (Beijing) 2024; 5:e495. [PMID: 38374872 PMCID: PMC10876210 DOI: 10.1002/mco2.495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 01/26/2024] [Accepted: 01/30/2024] [Indexed: 02/21/2024] Open
Abstract
Epigenetic modifications are defined as heritable changes in gene activity that do not involve changes in the underlying DNA sequence. The oncogenic process is driven by the accumulation of alterations that impact genome's structure and function. Genetic mutations, which directly disrupt the DNA sequence, are complemented by epigenetic modifications that modulate gene expression, thereby facilitating the acquisition of malignant characteristics. Principals among these epigenetic changes are shifts in DNA methylation and histone mark patterns, which promote tumor development and metastasis. Notably, the reversible nature of epigenetic alterations, as opposed to the permanence of genetic changes, positions the epigenetic machinery as a prime target in the discovery of novel therapeutics. Our review delves into the complexities of epigenetic regulation, exploring its profound effects on tumor initiation, metastatic behavior, metabolic pathways, and the tumor microenvironment. We place a particular emphasis on the dysregulation at each level of epigenetic modulation, including but not limited to, the aberrations in enzymes responsible for DNA methylation and histone modification, subunit loss or fusions in chromatin remodeling complexes, and the disturbances in higher-order chromatin structure. Finally, we also evaluate therapeutic approaches that leverage the growing understanding of chromatin dysregulation, offering new avenues for cancer treatment.
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Affiliation(s)
- Minzhi Gu
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Bo Ren
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Yuan Fang
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Jie Ren
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Xiaohong Liu
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Xing Wang
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Feihan Zhou
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Ruiling Xiao
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Xiyuan Luo
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Lei You
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
| | - Yupei Zhao
- Department of General SurgeryPeking Union Medical College HospitalPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingP. R. China
- Key Laboratory of Research in Pancreatic TumorChinese Academy of Medical SciencesBeijingP. R. China
- National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College HospitalBeijingP. R. China
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6
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Yamagata K, Mizumoto T, Yoshizawa T. The Emerging Role of SIRT7 in Glucose and Lipid Metabolism. Cells 2023; 13:48. [PMID: 38201252 PMCID: PMC10778536 DOI: 10.3390/cells13010048] [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: 11/21/2023] [Revised: 12/13/2023] [Accepted: 12/24/2023] [Indexed: 01/12/2024] Open
Abstract
Sirtuins (SIRT1-7 in mammals) are a family of NAD+-dependent lysine deacetylases and deacylases that regulate diverse biological processes, including metabolism, stress responses, and aging. SIRT7 is the least well-studied member of the sirtuins, but accumulating evidence has shown that SIRT7 plays critical roles in the regulation of glucose and lipid metabolism by modulating many target proteins in white adipose tissue, brown adipose tissue, and liver tissue. This review focuses on the emerging roles of SIRT7 in glucose and lipid metabolism in comparison with SIRT1 and SIRT6. We also discuss the possible implications of SIRT7 inhibition in the treatment of metabolic diseases such as type 2 diabetes and obesity.
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Affiliation(s)
- Kazuya Yamagata
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan; (T.M.); (T.Y.)
- Center for Metabolic Regulation of Healthy Aging, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Tomoya Mizumoto
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan; (T.M.); (T.Y.)
| | - Tatsuya Yoshizawa
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan; (T.M.); (T.Y.)
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7
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Kang W, Hamza A, Curry AM, Korade E, Donu D, Cen Y. Activation of SIRT6 Deacetylation by DNA Strand Breaks. ACS OMEGA 2023; 8:41310-41320. [PMID: 37970049 PMCID: PMC10633859 DOI: 10.1021/acsomega.3c04859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/05/2023] [Indexed: 11/17/2023]
Abstract
SIRT6 is an emerging regulator of longevity. Overexpression of SIRT6 extends the lifespan of mice. Conversely, SIRT6 knockout mice demonstrate severe metabolic defects and a shortened lifespan. The discrepancy between SIRT6's weak in vitro activity and robust in vivo activity has led to the hypothesis that this enzyme can be activated in response to DNA damage in cells. Here, we demonstrate that the deacetylase activity of SIRT6 can be stimulated by DNA strand breaks for synthetic peptide and histone substrates. The mechanism of activation is further explored by using an integrative chemical biology approach. SIRT6 can be preferentially activated by DNA lesions harboring a 5'-phosphate. The N- and C-termini of SIRT6 are strictly required for DNA break-induced activation. Additionally, the defatty-acylase activity of SIRT6 is also sensitive to DNA breaks, although the physiological significance needs further investigation. Collectively, our study sheds important light on the cellular regulation of diverse SIRT6 activities and suggests possible strategies for effective SIRT6 activation.
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Affiliation(s)
- Wenjia Kang
- Department
of Medicinal Chemistry, Virginia Commonwealth
University, Richmond, Virginia 23298-0540, United States
| | - Abu Hamza
- Department
of Medicinal Chemistry, Virginia Commonwealth
University, Richmond, Virginia 23298-0540, United States
| | - Alyson M. Curry
- Department
of Medicinal Chemistry, Virginia Commonwealth
University, Richmond, Virginia 23298-0540, United States
| | - Evan Korade
- Department
of Medicinal Chemistry, Virginia Commonwealth
University, Richmond, Virginia 23298-0540, United States
| | - Dickson Donu
- Department
of Medicinal Chemistry, Virginia Commonwealth
University, Richmond, Virginia 23298-0540, United States
| | - Yana Cen
- Department
of Medicinal Chemistry, Virginia Commonwealth
University, Richmond, Virginia 23298-0540, United States
- Institute
for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23298-0133, United States
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8
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Wang Y, Liu T, Cai Y, Liu W, Guo J. SIRT6's function in controlling the metabolism of lipids and glucose in diabetic nephropathy. Front Endocrinol (Lausanne) 2023; 14:1244705. [PMID: 37876546 PMCID: PMC10591331 DOI: 10.3389/fendo.2023.1244705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/21/2023] [Indexed: 10/26/2023] Open
Abstract
Diabetic nephropathy (DN) is a complication of diabetes mellitus (DM) and the main cause of excess mortality in patients with type 2 DM. The pathogenesis and progression of DN are closely associated with disorders of glucose and lipid metabolism. As a member of the sirtuin family, SIRT6 has deacetylation, defatty-acylation, and adenosine diphosphate-ribosylation enzyme activities as well as anti-aging and anticancer activities. SIRT6 plays an important role in glucose and lipid metabolism and signaling, especially in DN. SIRT6 improves glucose and lipid metabolism by controlling glycolysis and gluconeogenesis, affecting insulin secretion and transmission and regulating lipid decomposition, transport, and synthesis. Targeting SIRT6 may provide a new therapeutic strategy for DN by improving glucose and lipid metabolism. This review elaborates on the important role of SIRT6 in glucose and lipid metabolism, discusses the potential of SIRT6 as a therapeutic target to improve glucose and lipid metabolism and alleviate DN occurrence and progression of DN, and describes the prospects for future research.
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Affiliation(s)
- Ying Wang
- Country Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Tongtong Liu
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuzi Cai
- Country Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Weijing Liu
- Country Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Jing Guo
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
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Chen X, Li M, Wang D, Wang Q, Wei X, Liu X, Yang J, Kalvakolanu DV, Guo B, Zhang L. Histone chaperone SSRP1 is required for apoptosis inhibition and mitochondrial function in HCC via transcriptional promotion of TRAP1. Biochem Cell Biol 2023; 101:361-376. [PMID: 37084412 DOI: 10.1139/bcb-2023-0006] [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: 04/23/2023] Open
Abstract
Epigenetic regulation contributes to human health and disease, especially cancer, but the mechanisms of many epigenetic regulators remain obscure. Most research is focused on gene regulatory processes, such as mRNA translation and DNA damage repair, rather than the effects on biological functions like mitochondrial activity and oxidative phosphorylation. Here, we identified an essential role for the histone chaperone structure-specific recognition protein 1 (SSRP1) in mitochondrial oxidative respiration in hepatocellular carcinoma, and found that SSRP1 suppression led to mitochondrial damage and decreased oxidative respiration. Further, we focused on TNF receptor-associated protein 1 (TRAP1), the only member of the heat shock protein 90 (HSP90) family, which directly interacts with selected respiratory complexes and affects their stability and activity. We confirmed that SSRP1 downregulation caused a decrease in TRAP1 expression at both the mRNA and protein levels. A chromatin immunoprecipitation assay also showed that SSRP1 could deposit in the TRAP1 promoter region, indicating that SSRP1 maintains mitochondrial function and reactive oxygen species levels through TRAP1. Additionally, rescue experiments and animal experiments confirmed the mechanism of SSRP1 and TRAP1 interaction. In summary, we identified a new mechanism that connects mitochondrial respiration and apoptosis, via SSRP1.
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Affiliation(s)
- Xuyang Chen
- Key Laboratory of Pathobiology, Ministry of Education, and Department of pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Mengxin Li
- Key Laboratory of Pathobiology, Ministry of Education, and Department of pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Ding Wang
- Key Laboratory of Pathobiology, Ministry of Education, and Department of pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Qian Wang
- Key Laboratory of Pathobiology, Ministry of Education, and Department of pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Xiaodong Wei
- Key Laboratory of Pathobiology, Ministry of Education, and Department of pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Xiaorui Liu
- Key Laboratory of Pathobiology, Ministry of Education, and Department of pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Jiaying Yang
- Key Laboratory of Pathobiology, Ministry of Education, and Department of pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Dhan V Kalvakolanu
- Greenebaum NCI Comprehensive Cancer Center, Department of Microbiology and Immunology University of Maryland School Medicine, Baltimore, MD, USA
| | - Baofeng Guo
- Department of Plastic Surgery, China-Japan Union Hospital, Jilin University, Changchun 130033, China
| | - Ling Zhang
- Key Laboratory of Pathobiology, Ministry of Education, and Department of pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
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10
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Quan X, Xin Y, Wang HL, Sun Y, Chen C, Zhang J. Implications of altered sirtuins in metabolic regulation and oral cancer. PeerJ 2023; 11:e14752. [PMID: 36815979 PMCID: PMC9936870 DOI: 10.7717/peerj.14752] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 12/27/2022] [Indexed: 02/16/2023] Open
Abstract
Sirtuins (SIRTs 1-7) are a group of histone deacetylase enzymes with a wide range of enzyme activities that target a range of cellular proteins in the nucleus, cytoplasm, and mitochondria for posttranslational modifications by acetylation (SIRT1, 2, 3, and 5) or ADP ribosylation (SIRT4, 6, and 7). A variety of cellular functions, including mitochondrial functions and functions in energy homeostasis, metabolism, cancer, longevity and ageing, are regulated by sirtuins. Compromised sirtuin functions and/or alterations in the expression levels of sirtuins may lead to several pathological conditions and contribute significantly to alterations in metabolic phenotypes as well as oral carcinogenesis. Here, we describe the basic characteristics of seven mammalian sirtuins. This review also emphasizes the key molecular mechanisms of sirtuins in metabolic regulation and discusses the possible relationships of sirtuins with oral cancers. This review will provide novel insight into new therapeutic approaches targeting sirtuins that may potentially lead to effective strategies for combating oral malignancies.
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Affiliation(s)
- Xu Quan
- Department of Stomatology, Shanghai General Hospital, Shanghai, China
| | - Ying Xin
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an, Shaanxi, China,Department of Pathology, College of Stomatology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - He-Ling Wang
- Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog, Norway
| | - Yingjie Sun
- Xiangya School of Stomatology, Central South University, Changsha, Hunan, China
| | - Chanchan Chen
- Department of Stomatology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, China
| | - Jiangying Zhang
- Xiangya School of Stomatology, Central South University, Changsha, Hunan, China
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11
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Gaul DS, Calatayud N, Pahla J, Bonetti NR, Wang YJ, Weber J, Ambrosini S, Liberale L, Costantino S, Mohammed SA, Kraler S, Van Tits LJ, Pasterk L, Vdovenko D, Akhmedov A, Ruschitzka F, Paneni F, Lüscher TF, Camici GG, Matter CM. Endothelial SIRT6 deficiency promotes arterial thrombosis in mice. J Mol Cell Cardiol 2023; 174:56-62. [PMID: 36414111 DOI: 10.1016/j.yjmcc.2022.11.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 10/27/2022] [Accepted: 11/17/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Arterial thrombosis may be initiated by endothelial inflammation or denudation, activation of blood-borne elements or the coagulation system. Tissue factor (TF), a central trigger of the coagulation cascade, is regulated by the pro-inflammatory NF-κB-dependent pathways. Sirtuin 6 (SIRT6) is a nuclear member of the sirtuin family of NAD+-dependent deacetylases and is known to inhibit NF-κB signaling. Its constitutive deletion in mice shows early lethality with hypoglycemia and accelerated aging. Of note, the role of SIRT6 in arterial thrombosis remains unknown. Thus, we hypothesized that endothelial SIRT6 protects from arterial thrombosis by modulating inhibition of NF-κB-associated pathways. APPROACH AND RESULTS Using a laser-induced carotid thrombosis model, in vivo arterial occlusion occurred 45% faster in 12-week-old male endothelial-specific Sirt6-/- mice as compared to Sirt6fl/fl controls (n ≥ 9 per group; p = 0.0012). Levels of procoagulant TF were increased in animals lacking endothelial SIRT6 as compared to control littermates. Similarly, in cultured human aortic endothelial cells, SIRT6 knockdown increased TF mRNA, protein and activity. Moreover, SIRT6 knockdown increased mRNA levels of NF-κB-associated genes tumor necrosis factor alpha (TNF-α), poly [ADP-ribose] polymerase 1 (PARP-1), vascular cell adhesion molecule 1 (VCAM-1), and cyclooxygenase-2 (COX-2); at the protein level, COX-2, VCAM-1, TNF-α, and cleaved PARP-1 remained increased after Sirt6 knockdown. CONCLUSIONS Endothelium-specific Sirt6 deletion promotes arterial thrombosis in mice. In cultured human aortic endothelial cells, SIRT6 silencing enhances TF expression and activates pro-inflammatory pathways including TNF-α, cleaved PARP-1, VCAM-1 and COX-2. Hence, endogenous endothelial SIRT6 exerts a protective role in experimental arterial thrombosis.
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Affiliation(s)
- Daniel S Gaul
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Natacha Calatayud
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Jürgen Pahla
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Nicole R Bonetti
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Yu-Jen Wang
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Julien Weber
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Samuele Ambrosini
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Luca Liberale
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland; Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Sarah Costantino
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Shafeeq A Mohammed
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Simon Kraler
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Lambertus J Van Tits
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland
| | - Lisa Pasterk
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Daria Vdovenko
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Alexander Akhmedov
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Frank Ruschitzka
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland; Department of Cardiology, University Hospital Zurich, Switzerland
| | - Francesco Paneni
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland; Department of Cardiology, University Hospital Zurich, Switzerland; Department of Research and Education, University Hospital Zurich, Zurich, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Giovanni G Camici
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Christian M Matter
- Center for Translational and Experimental Cardiology, Department of Cardiology, University Hospital Zurich, University of Zurich, Switzerland; Department of Cardiology, University Hospital Zurich, Switzerland.
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12
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Xu K, Guo Y, Wang Y, Ren Y, Low V, Cho S, Ping L, Peng K, Li X, Qiu Y, Liu Q, Li Z, Wang Z. Decreased Enterobacteriaceae translocation due to gut microbiota remodeling mediates the alleviation of premature aging by a high-fat diet. Aging Cell 2022; 22:e13760. [PMID: 36567449 PMCID: PMC9924944 DOI: 10.1111/acel.13760] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 10/24/2022] [Accepted: 12/05/2022] [Indexed: 12/27/2022] Open
Abstract
Aging-associated microbial dysbiosis exacerbates various disorders and dysfunctions, and is a major contributor to morbidity and mortality in the elderly, but the underlying cause of this aging-related syndrome is confusing. SIRT6 knockout (SIRT6 KO) mice undergo premature aging and succumb to death by 4 weeks, and are therefore useful as a premature aging research model. Here, fecal microbiota transplantation from SIRT6 KO mice into wild-type (WT) mice phenocopies the gut dysbiosis and premature aging observed in SIRT6 KO mice. Conversely, an expanded lifespan was observed in SIRT6 KO mice when transplanted with microbiota from WT mice. Antibiotic cocktail treatment attenuated inflammation and cell senescence in KO mice, directly suggesting that gut dysbiosis contributes to the premature aging of SIRT6 KO mice. Increased Enterobacteriaceae translocation, driven by the overgrowth of Escherichia coli, is the likely mechanism for the premature aging effects of microbiome dysregulation, which could be reversed by a high-fat diet. Our results provide a mechanism for the causal link between gut dysbiosis and aging, and support a beneficial effect of a high-fat diet for correcting gut dysbiosis and alleviating premature aging. This study provides a rationale for the integration of microbiome-based high-fat diets into therapeutic interventions against aging-associated diseases.
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Affiliation(s)
- Kang Xu
- Protein Science Key Laboratory of the Ministry of EducationSchool of Pharmaceutical SciencesTsinghua UniversityBeijingChina,School of Basic Medical SciencesCapital Medical UniversityBeijingChina
| | - Yannan Guo
- Protein Science Key Laboratory of the Ministry of EducationSchool of Pharmaceutical SciencesTsinghua UniversityBeijingChina
| | - Yida Wang
- Protein Science Key Laboratory of the Ministry of EducationSchool of Pharmaceutical SciencesTsinghua UniversityBeijingChina
| | - Yu Ren
- Protein Science Key Laboratory of the Ministry of EducationSchool of Pharmaceutical SciencesTsinghua UniversityBeijingChina
| | - Vivien Low
- Department of PharmacologyWeill Cornell MedicineNew YorkNew YorkUSA
| | - Sungyun Cho
- Department of PharmacologyWeill Cornell MedicineNew YorkNew YorkUSA
| | - Lu Ping
- Peking Union Medical CollegeBeijingChina
| | - Kezheng Peng
- Protein Science Key Laboratory of the Ministry of EducationSchool of Pharmaceutical SciencesTsinghua UniversityBeijingChina
| | - Xue Li
- School of MedicineTsinghua UniversityBeijingChina
| | - Ying Qiu
- School of MedicineTsinghua UniversityBeijingChina
| | - Qingfei Liu
- Protein Science Key Laboratory of the Ministry of EducationSchool of Pharmaceutical SciencesTsinghua UniversityBeijingChina
| | - Zhongchi Li
- Protein Science Key Laboratory of the Ministry of EducationSchool of Pharmaceutical SciencesTsinghua UniversityBeijingChina,Department of PharmacologyWeill Cornell MedicineNew YorkNew YorkUSA
| | - Zhao Wang
- Protein Science Key Laboratory of the Ministry of EducationSchool of Pharmaceutical SciencesTsinghua UniversityBeijingChina,Lead Contract
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13
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Guo Z, Li P, Ge J, Li H. SIRT6 in Aging, Metabolism, Inflammation and Cardiovascular Diseases. Aging Dis 2022; 13:1787-1822. [PMID: 36465178 PMCID: PMC9662279 DOI: 10.14336/ad.2022.0413] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 04/13/2022] [Indexed: 07/28/2023] Open
Abstract
As an important NAD+-dependent enzyme, SIRT6 has received significant attention since its discovery. In view of observations that SIRT6-deficient animals exhibit genomic instability and metabolic disorders and undergo early death, SIRT6 has long been considered a protein of longevity. Recently, growing evidence has demonstrated that SIRT6 functions as a deacetylase, mono-ADP-ribosyltransferase and long fatty deacylase and participates in a variety of cellular signaling pathways from DNA damage repair in the early stage to disease progression. In this review, we elaborate on the specific substrates and molecular mechanisms of SIRT6 in various physiological and pathological processes in detail, emphasizing its links to aging (genomic damage, telomere integrity, DNA repair), metabolism (glycolysis, gluconeogenesis, insulin secretion and lipid synthesis, lipolysis, thermogenesis), inflammation and cardiovascular diseases (atherosclerosis, cardiac hypertrophy, heart failure, ischemia-reperfusion injury). In addition, the most recent advances regarding SIRT6 modulators (agonists and inhibitors) as potential therapeutic agents for SIRT6-mediated diseases are reviewed.
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Affiliation(s)
- Zhenyang Guo
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Fudan University, Shanghai, China.
| | - Peng Li
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Fudan University, Shanghai, China.
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Fudan University, Shanghai, China.
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Hua Li
- Department of Cardiology, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Fudan University, Shanghai, China.
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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14
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Metformin alleviates HFD-induced oxidative stress in hepatocyte via activating SIRT6/PGC-1α/ENDOG signaling. Clin Sci (Lond) 2022; 136:1711-1730. [DOI: 10.1042/cs20220242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 10/13/2022] [Accepted: 10/31/2022] [Indexed: 12/05/2022]
Abstract
Abstract
Metformin is accepted as a first-line drug for the therapy of Type 2 diabetes (T2D), while its mechanism is still controversial. In the present study, by taking advantage of mouse model of high-fat-diet (HFD)-induced obesity and primary mouse hepatocytes (PMHCs) as well as human hepatocyte L02 cell line, we aimed to investigate the involvement of SIRTs during the application of metformin for the therapy of T2D. Our data evidenced that during HFD-induced obesity, there was elevation of nucleus protein acetylation. Analysis of liver tissue showed that among all SIRT members, SIRT6 expression was significantly down-regulated during HFD feeding, which was sustained to regular level with metformin administration. Our result also showed that SIRT6 suppressed intracellular oxidative stress upon FAs stimulation in PMHCs and L02 cells. Mechanistically, SIRT6, but not SIRT1 promoted PGC-1α expression. We further prove that ENDOG is downstream of PGC-1α. In addition, we evidenced that ENDOG protects hepatocytes from lipid-induced oxidative stress, and down-regulation of Endog blunted the protective role of metformin in defending against FAs-induced oxidative stress. Our study established a novel mechanism of metformin in counteracting lipid-induced hepatic injury via activating SIRT6/PGC-1α/ENDOG signaling, thus providing novel targets of metformin in the therapy of T2D.
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15
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Sirtuin 6 maintains epithelial STAT6 activity to support intestinal tuft cell development and type 2 immunity. Nat Commun 2022; 13:5192. [PMID: 36057627 PMCID: PMC9440928 DOI: 10.1038/s41467-022-32846-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 08/19/2022] [Indexed: 02/08/2023] Open
Abstract
Dynamic regulation of intestinal epithelial cell (IEC) differentiation is crucial for both homeostasis and the response to helminth infection. SIRT6 belongs to the NAD+-dependent deacetylases and has established diverse roles in aging, metabolism and disease. Here, we report that IEC Sirt6 deletion leads to impaired tuft cell development and type 2 immunity in response to helminth infection, thereby resulting in compromised worm expulsion. Conversely, after helminth infection, IEC SIRT6 transgenic mice exhibit enhanced epithelial remodeling process and more efficient worm clearance. Mechanistically, Sirt6 ablation causes elevated Socs3 expression, and subsequently attenuated tyrosine 641 phosphorylation of STAT6 in IECs. Notably, intestinal epithelial overexpression of constitutively activated STAT6 (STAT6vt) in mice is sufficient to induce the expansion of tuft and goblet cell linage. Furthermore, epithelial STAT6vt overexpression remarkedly reverses the defects in intestinal epithelial remodeling caused by Sirt6 ablation. Our results reveal a novel function of SIRT6 in regulating intestinal epithelial remodeling and mucosal type 2 immunity in response to helminth infection. Host defense against helminth infection is mediated by mucosal type 2 immunity. Using gain- and loss-of-function mouse models, and mouse intestinal organoids, Xiong et al. show that SIRT6 modulates tuft and goblet cell expansion in intestinal epithelium by activating STAT6 to maintain type 2 mucosal immunity in response to helminth infection.
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16
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Chen C, Wang Z, Qin Y. Connections between metabolism and epigenetics: mechanisms and novel anti-cancer strategy. Front Pharmacol 2022; 13:935536. [PMID: 35935878 PMCID: PMC9354823 DOI: 10.3389/fphar.2022.935536] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/29/2022] [Indexed: 12/26/2022] Open
Abstract
Cancer cells undergo metabolic adaptations to sustain their growth and proliferation under several stress conditions thereby displaying metabolic plasticity. Epigenetic modification is known to occur at the DNA, histone, and RNA level, which can alter chromatin state. For almost a century, our focus in cancer biology is dominated by oncogenic mutations. Until recently, the connection between metabolism and epigenetics in a reciprocal manner was spotlighted. Explicitly, several metabolites serve as substrates and co-factors of epigenetic enzymes to carry out post-translational modifications of DNA and histone. Genetic mutations in metabolic enzymes facilitate the production of oncometabolites that ultimately impact epigenetics. Numerous evidences also indicate epigenome is sensitive to cancer metabolism. Conversely, epigenetic dysfunction is certified to alter metabolic enzymes leading to tumorigenesis. Further, the bidirectional relationship between epigenetics and metabolism can impact directly and indirectly on immune microenvironment, which might create a new avenue for drug discovery. Here we summarize the effects of metabolism reprogramming on epigenetic modification, and vice versa; and the latest advances in targeting metabolism-epigenetic crosstalk. We also discuss the principles linking cancer metabolism, epigenetics and immunity, and seek optimal immunotherapy-based combinations.
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17
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Beegum F, P V A, George KT, K P D, Begum F, Krishnadas N, Shenoy RR. Sirtuins as therapeutic targets for improving delayed wound healing in diabetes. J Drug Target 2022; 30:911-926. [PMID: 35787722 DOI: 10.1080/1061186x.2022.2085729] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Sirtuins are a vast family of histone deacetylases, which are NAD+ dependent enzymes, consisting of seven members, namely SIRT 1, SIRT 6 and SIRT 7 located within the nucleus, SIRT 2 in the cytoplasm and SIRT 3, SIRT 4, and SIRT 5 in the mitochondria. They have vital roles in regulating various biological functions such as age-related metabolic disorders, inflammation, stress response, cardiovascular and neuronal functions. Delayed wound healing is one of the complication of diabetes, which can lead to lower limb amputation if not treated timely. SIRT 1, 3 and 6 are potent targets for diabetic wound healing. SIRT 1 deficiency reduces recruitment of fibroblasts, macrophages, mast cells, neutrophils to wound site and delays wound healing; negatively expressing MMP-9. The SIRT 1 mediated signalling pathway in diabetic wound healing is the SIRT 1-foxo-C-Myc pathway. On the contrary SIRT 3 deficiency, impairs proliferation and migration of fibroblasts and SIRT 6 deficiency impairs wound closure rate and interrupts the vascular remodelling. This review focuses on the role of sirtuins in improving delayed wound healing in diabetes and its natural modulators with their specific functions towards healing diabetic wounds.
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Affiliation(s)
- Fathima Beegum
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Anuranjana P V
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Krupa Thankam George
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Divya K P
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Farmiza Begum
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Nandakumar Krishnadas
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Rekha R Shenoy
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
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18
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Yuan Z, Zeng Y, Tian Y, Wang S, Hong B, Yang M. SIRT6 serves as a polyhedron in glycolytic metabolism and ageing-related diseases. Exp Gerontol 2022; 162:111765. [DOI: 10.1016/j.exger.2022.111765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/24/2022] [Accepted: 03/07/2022] [Indexed: 11/04/2022]
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19
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Yang Y, Zhu M, Liang J, Wang H, Sun D, Li H, Chen L. SIRT6 mediates multidimensional modulation to maintain organism homeostasis. J Cell Physiol 2022; 237:3205-3221. [PMID: 35621134 DOI: 10.1002/jcp.30791] [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: 03/16/2022] [Revised: 05/05/2022] [Accepted: 05/16/2022] [Indexed: 12/20/2022]
Abstract
As a member of the silent information regulators (sirtuins) family, SIRT6 can regulate a variety of biological processes, including DNA repair, glucose and lipid metabolism, oxidative stress and lifespan, and so forth. SIRT6 maintains organism homeostasis in a variety of phenotypes by mediating epigenetic regulation and posttranslational modification of functional proteins. In this review, we outline the structural basis of SIRT6 enzyme activity and its mechanism of maintaining organism homeostasis in a variety of phenotypes, with an emphasis on the upstream that regulates SIRT6 expression and the downstream substrates. And how SIRT6 achieves multidimensional coordination to maintain organism homeostasis and even extend lifespan. We try to understand the regulatory mechanism of SIRT6 in different phenotypes from the perspective of protein interaction.
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Affiliation(s)
- Yueying Yang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Man Zhu
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Jing Liang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Hui Wang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Dejuan Sun
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Hua Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China.,School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lixia Chen
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
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Drug Discovery of Plausible Lead Natural Compounds That Target the Insulin Signaling Pathway: Bioinformatics Approaches. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:2832889. [PMID: 35356248 PMCID: PMC8958086 DOI: 10.1155/2022/2832889] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/16/2022] [Accepted: 02/09/2022] [Indexed: 12/11/2022]
Abstract
The growing smooth talk in the field of natural compounds is due to the ancient and current interest in herbal medicine and their potentially positive effects on health. Dozens of antidiabetic natural compounds were reported and tested in vivo, in silico, and in vitro. The role of these natural compounds, their actions on the insulin signaling pathway, and the stimulation of the glucose transporter-4 (GLUT4) insulin-responsive translocation to the plasma membrane (PM) are all crucial in the treatment of diabetes and insulin resistance. In this review, we collected and summarized a group of available in vivo and in vitro studies which targeted isolated phytochemicals with possible antidiabetic activity. Moreover, the in silico docking of natural compounds with some of the insulin signaling cascade key proteins is also summarized based on the current literature. In this review, hundreds of recent studies on pure natural compounds that alleviate type II diabetes mellitus (type II DM) were revised. We focused on natural compounds that could potentially regulate blood glucose and stimulate GLUT4 translocation through the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) pathway. On attempt to point out potential new natural antidiabetic compounds, this review also focuses on natural ingredients that were shown to interact with proteins in the insulin signaling pathway in silico, regardless of their in vitro/in vivo antidiabetic activity. We invite interested researchers to test these compounds as potential novel type II DM drugs and explore their therapeutic mechanisms.
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21
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Raghu S, Prabhashankar AB, Shivanaiah B, Tripathi E, Sundaresan NR. Sirtuin 6 Is a Critical Epigenetic Regulator of Cancer. Subcell Biochem 2022; 100:337-360. [PMID: 36301499 DOI: 10.1007/978-3-031-07634-3_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Sirtuin 6 (SIRT6) is a member of the mammalian sirtuin family with deacetylase, deacylase, and mono-ADP-ribosyl-transferase activities. It is a multitasking chromatin-associated protein regulating different cellular and physiological functions in cells. Specifically, SIRT6 dysfunction is implicated in several aging-related human diseases, including cancer. Studies indicate that SIRT6 has a tumor-specific role, and it is considered a tumor suppressor as well as a tumor growth inducer, depending on the type of cancer. In this chapter, we review the role of SIRT6 in metabolism, genomic stability, and cancer. Further, we provide an insight into the interplay of the tumor-suppressing and oncogenic roles of SIRT6 in cancer. Additionally, we discuss the use of small-molecule SIRT6 modulators as potential therapeutics.
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Affiliation(s)
- Sukanya Raghu
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science (IISc), Bengaluru, Karnataka, India
| | - Arathi Bangalore Prabhashankar
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science (IISc), Bengaluru, Karnataka, India
| | - Bhoomika Shivanaiah
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science (IISc), Bengaluru, Karnataka, India
| | - Ekta Tripathi
- Department of Biotechnology, Faculty of Life and Allied Health Sciences, Ramaiah University of Applied Sciences, Bengaluru, India.
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science (IISc), Bengaluru, Karnataka, India.
| | - Nagalingam Ravi Sundaresan
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science (IISc), Bengaluru, Karnataka, India.
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22
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Yang X, Feng J, Liang W, Zhu Z, Chen Z, Hu J, Yang D, Ding G. Roles of SIRT6 in kidney disease: a novel therapeutic target. Cell Mol Life Sci 2021; 79:53. [PMID: 34950960 PMCID: PMC11072764 DOI: 10.1007/s00018-021-04061-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 12/13/2022]
Abstract
SIRT6 is an NAD+ dependent deacetylase that belongs to the mammalian sirtuin family. SIRT6 is mainly located in the nucleus and regulates chromatin remodeling, genome stability, and gene transcription. SIRT6 extensively participates in various physiological activities such as DNA repair, energy metabolism, oxidative stress, inflammation, and fibrosis. In recent years, the role of epigenetics such as acetylation modification in renal disease has gradually received widespread attention. SIRT6 reduces oxidative stress, inflammation, and renal fibrosis, which is of great importance in maintaining cellular homeostasis and delaying the chronic progression of kidney disease. Here, we review the structure and biological function of SIRT6 and summarize the regulatory mechanisms of SIRT6 in kidney disease. Moreover, the role of SIRT6 as a potential therapeutic target for the progression of kidney disease will be discussed. SIRT6 plays an important role in kidney disease. SIRT6 regulates mitochondrial dynamics and mitochondrial biogenesis, induces G2/M cycle arrest, and plays an antioxidant role in nephrotoxicity, IR, obstructive nephropathy, and sepsis-induced AKI. SIRT6 prevents and delays progressive CKD induced by hyperglycemia, kidney senescence, hypertension, and lipid accumulation by regulating mitochondrial biogenesis, and has antioxidant, anti-inflammatory, and antifibrosis effects. Additionally, hypoxia, inflammation, and fibrosis are the main mechanisms of the AKI-to-CKD transition. SIRT6 plays a critical role in the AKI-to-CKD transition and kidney repair through anti-inflammatory, antifibrotic, and mitochondrial quality control mechanisms. AKI Acute kidney injury, CKD Chronic kidney disease.
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Affiliation(s)
- Xueyan Yang
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Jun Feng
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Wei Liang
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Zijing Zhu
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Zhaowei Chen
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Jijia Hu
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Dingping Yang
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Guohua Ding
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China.
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China.
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Watroba M, Szukiewicz D. Sirtuins at the Service of Healthy Longevity. Front Physiol 2021; 12:724506. [PMID: 34899370 PMCID: PMC8656451 DOI: 10.3389/fphys.2021.724506] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 10/20/2021] [Indexed: 12/12/2022] Open
Abstract
Sirtuins may counteract at least six hallmarks of organismal aging: neurodegeneration, chronic but ineffective inflammatory response, metabolic syndrome, DNA damage, genome instability, and cancer incidence. Moreover, caloric restriction is believed to slow down aging by boosting the activity of some sirtuins through activating adenosine monophosphate-activated protein kinase (AMPK), thus raising the level of intracellular nicotinamide adenine dinucleotide (NAD+) by stimulating NAD+ biosynthesis. Sirtuins and their downstream effectors induce intracellular signaling pathways related to a moderate caloric restriction within cells, mitigating reactive oxygen species (ROS) production, cell senescence phenotype (CSP) induction, and apoptosis as forms of the cellular stress response. Instead, it can promote DNA damage repair and survival of cells with normal, completely functional phenotypes. In this review, we discuss mechanisms of sirtuins action toward cell-conserving phenotype associated with intracellular signaling pathways related to moderate caloric restriction, as well as some tissue-specific functions of sirtuins, especially in the central nervous system, heart muscle, skeletal muscles, liver, kidneys, white adipose tissue, hematopoietic system, and immune system. In this context, we discuss the possibility of new therapeutic approaches.
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Affiliation(s)
- Mateusz Watroba
- Department of Biophysics, Physiology and Pathophysiology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
| | - Dariusz Szukiewicz
- Department of Biophysics, Physiology and Pathophysiology, Faculty of Health Sciences, Medical University of Warsaw, Warsaw, Poland
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24
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Korotkov A, Seluanov A, Gorbunova V. Sirtuin 6: linking longevity with genome and epigenome stability. Trends Cell Biol 2021; 31:994-1006. [PMID: 34281779 PMCID: PMC8903056 DOI: 10.1016/j.tcb.2021.06.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 01/13/2023]
Abstract
Sirtuin 6 (SIRT6) has been in the spotlight of aging research because progeroid phenotypes are associated with SIRT6 deficiency. SIRT6 has multiple molecular functions, including DNA repair and heterochromatin regulation, which position SIRT6 as a hub that regulates genome and epigenome stability. Genomic instability caused by persistent DNA damage and accumulating mutations, together with alterations in the epigenetic landscape and derepression of repetitive genetic elements, have emerged as mechanisms driving organismal aging. Enhanced levels of SIRT6 expression or activity provide avenues for rejuvenation strategies. This review focuses on the role of SIRT6 in the maintenance of genome and epigenome stability and its link to longevity. We propose a model where SIRT6 together with lamins control aging and rejuvenation by maintaining epigenetic silencing of repetitive elements.
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Affiliation(s)
- Anatoly Korotkov
- Departments of Biology and Medicine, University of Rochester, Rochester, NY 14627, USA
| | - Andrei Seluanov
- Departments of Biology and Medicine, University of Rochester, Rochester, NY 14627, USA,Correspondence: or
| | - Vera Gorbunova
- Departments of Biology and Medicine, University of Rochester, Rochester, NY 14627, USA,Correspondence: or
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25
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Hypoglycemia, Vascular Disease and Cognitive Dysfunction in Diabetes: Insights from Text Mining-Based Reconstruction and Bioinformatics Analysis of the Gene Networks. Int J Mol Sci 2021; 22:ijms222212419. [PMID: 34830301 PMCID: PMC8620086 DOI: 10.3390/ijms222212419] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/14/2021] [Accepted: 11/16/2021] [Indexed: 12/16/2022] Open
Abstract
Hypoglycemia has been recognized as a risk factor for diabetic vascular complications and cognitive decline, but the molecular mechanisms of the effect of hypoglycemia on target organs are not fully understood. In this work, gene networks of hypoglycemia and cardiovascular disease, diabetic retinopathy, diabetic nephropathy, diabetic neuropathy, cognitive decline, and Alzheimer's disease were reconstructed using ANDSystem, a text-mining-based tool. The gene network of hypoglycemia included 141 genes and 2467 interactions. Enrichment analysis of Gene Ontology (GO) biological processes showed that the regulation of insulin secretion, glucose homeostasis, apoptosis, nitric oxide biosynthesis, and cell signaling are significantly enriched for hypoglycemia. Among the network hubs, INS, IL6, LEP, TNF, IL1B, EGFR, and FOS had the highest betweenness centrality, while GPR142, MBOAT4, SLC5A4, IGFBP6, PPY, G6PC1, SLC2A2, GYS2, GCGR, and AQP7 demonstrated the highest cross-talk specificity. Hypoglycemia-related genes were overrepresented in the gene networks of diabetic complications and comorbidity; moreover, 14 genes were mutual for all studied disorders. Eleven GO biological processes (glucose homeostasis, nitric oxide biosynthesis, smooth muscle cell proliferation, ERK1 and ERK2 cascade, etc.) were overrepresented in all reconstructed networks. The obtained results expand our understanding of the molecular mechanisms underlying the deteriorating effects of hypoglycemia in diabetes-associated vascular disease and cognitive dysfunction.
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26
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Udrea AM, Gradisteanu Pircalabioru G, Boboc AA, Mares C, Dinache A, Mernea M, Avram S. Advanced Bioinformatics Tools in the Pharmacokinetic Profiles of Natural and Synthetic Compounds with Anti-Diabetic Activity. Biomolecules 2021; 11:1692. [PMID: 34827690 PMCID: PMC8615418 DOI: 10.3390/biom11111692] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 12/12/2022] Open
Abstract
Diabetes represents a major health problem, involving a severe imbalance of blood sugar levels, which can disturb the nerves, eyes, kidneys, and other organs. Diabes management involves several synthetic drugs focused on improving insulin sensitivity, increasing insulin production, and decreasing blood glucose levels, but with unclear molecular mechanisms and severe side effects. Natural chemicals extracted from several plants such as Gymnema sylvestre, Momordica charantia or Ophiopogon planiscapus Niger have aroused great interest for their anti-diabetes activity, but also their hypolipidemic and anti-obesity activity. Here, we focused on the anti-diabetic activity of a few natural and synthetic compounds, in correlation with their pharmacokinetic/pharmacodynamic profiles, especially with their blood-brain barrier (BBB) permeability. We reviewed studies that used bioinformatics methods such as predicted BBB, molecular docking, molecular dynamics and quantitative structure-activity relationship (QSAR) to elucidate the proper action mechanisms of antidiabetic compounds. Currently, it is evident that BBB damage plays a significant role in diabetes disorders, but the molecular mechanisms are not clear. Here, we presented the efficacy of natural (gymnemic acids, quercetin, resveratrol) and synthetic (TAK-242, propofol, or APX3330) compounds in reducing diabetes symptoms and improving BBB dysfunctions. Bioinformatics tools can be helpful in the quest for chemical compounds with effective anti-diabetic activity that can enhance the druggability of molecular targets and provide a deeper understanding of diabetes mechanisms.
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Affiliation(s)
- Ana Maria Udrea
- Laser Department, National Institute for Laser, Plasma and Radiation Physics, 077125 Maurele, Romania; (A.M.U.); (A.D.)
- Earth, Environmental and Life Sciences Section, Research Institute of the University of Bucharest, University of Bucharest, 1 B. P. Hașdeu St., 50567 Bucharest, Romania;
| | - Gratiela Gradisteanu Pircalabioru
- Earth, Environmental and Life Sciences Section, Research Institute of the University of Bucharest, University of Bucharest, 1 B. P. Hașdeu St., 50567 Bucharest, Romania;
| | - Anca Andreea Boboc
- “Maria Sklodowska Curie” Emergency Children’s Hospital, 20, Constantin Brancoveanu Bd., 077120 Bucharest, Romania;
- Department of Pediatrics 8, “Carol Davila” University of Medicine and Pharmacy, Eroii Sanitari Bd., 020021 Bucharest, Romania
| | - Catalina Mares
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania; (C.M.); (S.A.)
| | - Andra Dinache
- Laser Department, National Institute for Laser, Plasma and Radiation Physics, 077125 Maurele, Romania; (A.M.U.); (A.D.)
| | - Maria Mernea
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania; (C.M.); (S.A.)
| | - Speranta Avram
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independentei, 050095 Bucharest, Romania; (C.M.); (S.A.)
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27
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Słowińska M, Paukszto Ł, Pardyak L, Jastrzębski JP, Liszewska E, Wiśniewska J, Kozłowski K, Jankowski J, Bilińska B, Ciereszko A. Transcriptome and Proteome Analysis Revealed Key Pathways Regulating Final Stage of Oocyte Maturation of the Turkey ( Meleagris gallopavo). Int J Mol Sci 2021; 22:ijms221910589. [PMID: 34638931 PMCID: PMC8508634 DOI: 10.3390/ijms221910589] [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: 09/03/2021] [Revised: 09/22/2021] [Accepted: 09/27/2021] [Indexed: 11/18/2022] Open
Abstract
In birds, the zona pellucida (ZP) matrix that surrounds the ovulated oocyte—called the inner perivitelline layer—is involved in sperm–zona interaction and successful fertilization. To identify the important genes and proteins connected with the final step of egg development, next-generation sequencing and two-dimensional electrophoresis, combined with mass spectrometry, were used for the analysis of mature oocytes at the F1 developmental stage. A total of 8161 genes and 228 proteins were annotated. Six subfamilies of genes, with codes ZP, ZP1–4, ZPD, and ZPAX, were identified, with the dominant expression of ZPD. The main expression site for ZP1 was the liver; however, granulosa cells may also participate in local ZP1 secretion. A ubiquitination system was identified in mature oocytes, where ZP1 was found to be the main ubiquitinated protein. Analysis of transcripts classified in estrogen receptor (ESR) signaling indicated the presence of ESR1 and ESR2, as well as a set of estrogen-dependent genes involved in both genomic and nongenomic mechanisms for the regulation of gene expression by estrogen. Oxidative phosphorylation was found to be a possible source of adenosine triphosphate, and the nuclear factor erythroid 2-related factor 2 signaling pathway could be involved in the response against oxidative stress. Oocyte–granulosa cell communication by tight, adherens, and gap junctions seems to be essential for the final step of oocyte maturation.
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Affiliation(s)
- Mariola Słowińska
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences in Olsztyn, 10-748 Olsztyn, Poland; (E.L.); (A.C.)
- Correspondence: ; Tel.: +48-89-539-3173
| | - Łukasz Paukszto
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (Ł.P.); (J.P.J.)
| | - Laura Pardyak
- Center of Experimental and Innovative Medicine, University of Agriculture in Krakow, 30-248 Kraków, Poland;
| | - Jan P. Jastrzębski
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (Ł.P.); (J.P.J.)
| | - Ewa Liszewska
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences in Olsztyn, 10-748 Olsztyn, Poland; (E.L.); (A.C.)
| | - Joanna Wiśniewska
- Department of Biological Function of Food, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences in Olsztyn, 10-748 Olsztyn, Poland;
| | - Krzysztof Kozłowski
- Department of Poultry Science, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (K.K.); (J.J.)
| | - Jan Jankowski
- Department of Poultry Science, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland; (K.K.); (J.J.)
| | - Barbara Bilińska
- Department of Endocrinology, Institute of Zoology, Jagiellonian University, 30-387 Kraków, Poland;
| | - Andrzej Ciereszko
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences in Olsztyn, 10-748 Olsztyn, Poland; (E.L.); (A.C.)
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Abstract
![]()
Sirtuin 6 (SIRT6)
is an NAD+-dependent protein deacylase
and mono-ADP-ribosyltransferase of the sirtuin family with a wide
substrate specificity. In vitro and in vivo studies have indicated that SIRT6 overexpression or activation has
beneficial effects for cellular processes such as DNA repair, metabolic
regulation, and aging. On the other hand, SIRT6 has contrasting roles
in cancer, acting either as a tumor suppressor or promoter in a context-specific
manner. Given its central role in cellular homeostasis, SIRT6 has
emerged as a promising target for the development of small-molecule
activators and inhibitors possessing a therapeutic potential in diseases
ranging from cancer to age-related disorders. Moreover, specific modulators
allow the molecular details of SIRT6 activity to be scrutinized and
further validate the enzyme as a pharmacological target. In this Perspective,
we summarize the current knowledge about SIRT6 pharmacology and medicinal
chemistry and describe the features of the activators and inhibitors
identified so far.
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Affiliation(s)
- Francesco Fiorentino
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Antonello Mai
- Department of Drug Chemistry & Technologies, Sapienza University of Rome, P.le A Moro 5, 00185 Rome, Italy
| | - Dante Rotili
- Department of Drug Chemistry & Technologies, Sapienza University of Rome, P.le A Moro 5, 00185 Rome, Italy
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29
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Killoy KM, Pehar M, Harlan BA, Vargas MR. Altered expression of clock and clock-controlled genes in a hSOD1-linked amyotrophic lateral sclerosis mouse model. FASEB J 2021; 35:e21343. [PMID: 33508151 DOI: 10.1096/fj.202000386rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 12/12/2020] [Accepted: 12/20/2020] [Indexed: 11/11/2022]
Abstract
Most physiological processes in mammals are subjected to daily oscillations that are governed by a circadian system. The circadian rhythm orchestrates metabolic pathways in a time-dependent manner and loss of circadian timekeeping has been associated with cellular and system-wide alterations in metabolism, redox homeostasis, and inflammation. Here, we investigated the expression of clock and clock-controlled genes in multiple tissues (suprachiasmatic nucleus, spinal cord, gastrocnemius muscle, and liver) from mutant hSOD1-linked amyotrophic lateral sclerosis (ALS) mouse models. We identified tissue-specific changes in the relative expression, as well as altered daily expression patterns, of clock genes, sirtuins (Sirt1, Sirt3, and Sirt6), metabolic enzymes (Pfkfb3, Cpt1, and Nampt), and redox regulators (Nrf2, G6pd, and Pgd). In addition, astrocytes transdifferentiated from induced pluripotent stem cells from SOD1-linked and FUS RNA binding protein-linked ALS patients also displayed altered expression of clock genes. Overall, our results raise the possibility of disrupted cross-talk between the suprachiasmatic nucleus and peripheral tissues in hSOD1G93A mice, preventing proper peripheral clock regulation and synchronization. Since these changes were observed in symptomatic mice, it remains unclear whether this dysregulation directly drives or it is a consequence of the degenerative process. However, because metabolism and redox homeostasis are intimately entangled with circadian rhythms, our data suggest that altered expression of clock genes may contribute to metabolic and redox impairment in ALS. Since circadian dyssynchrony can be rescued, these results provide the groundwork for potential disease-modifying interventions.
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Affiliation(s)
- Kelby M Killoy
- Biomedical Sciences Training Program, Medical University of South Carolina, Charleston, SC, USA
| | - Mariana Pehar
- Division of Geriatrics and Gerontology, Department of Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - Benjamin A Harlan
- Biomedical Sciences Training Program, Medical University of South Carolina, Charleston, SC, USA
| | - Marcelo R Vargas
- Department of Neurology, University of Wisconsin-Madison, Madison, WI, USA
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30
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Li L, Chen B, An T, Zhang H, Xia B, Li R, Zhu R, Tian Y, Wang L, Zhao D, Mo F, Li Y, Yang G, Orekhov AN, Prentki M, Zhang D, Jiang G, Zhu X. BaZiBuShen alleviates altered testicular morphology and spermatogenesis and modulates Sirt6/P53 and Sirt6/NF-κB pathways in aging mice induced by D-galactose and NaNO 2. JOURNAL OF ETHNOPHARMACOLOGY 2021; 271:113810. [PMID: 33508368 DOI: 10.1016/j.jep.2021.113810] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 12/12/2020] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sperm infertility and testicular atrophy are symptoms associated with aging. BaZiBuShen formula (BZBS), a patented Chinese herbal prescription composed of Semen Cuscutae, Fructus Lycii, Epimedii Folium, Fructus Schisandrae Sphenantherae, Fructus Cnidii, Fructus Rosae Laevigatae, Semen Allii Tuberosi., Radix Morindae Officinalis, Herba Cistanches, Fructus Rubi, Radix Rehmanniae Recens, Radix Cyathulae, Radix Ginseng, Cervi Cornu Pantotrichum, Hippocampus, and Fuctus Toosendan, has been used as a kidney-tonifying and anti-aging drug as well as for the treatment of impotence and male infertility in traditional Chinese medicine. AIM OF THE STUDY We aimed at investigating whether BZBS preserves sperm and testes morphology in aging mice, and to explore the underlying mechanisms. MATERIALS AND METHODS BZBS was orally administered to aging mice induced by D-galactose (D-gal) and NaNO2 for 65 days. Sperm quality and testes pathophysiological alterations were examined by a Semen Analysis System, hematoxylin-eosin staining, transmission electron microscopy, and mitochondrial complex IV activity. In addition, serum levels of total antioxidant capacity (TAC), malondialdehyde (MDA), 8-hydroxy-desoxyguanosine (8-OH-dG), reduced glutathione (GSH), oxidized glutathione disulfide (GSSG), testosterone (T), follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2) and tumor necrosis factor-α (TNF-α) were determined by ELISA. The expressions of P450 aromatase (CYP19), sirtuin 6 (Sirt6), P53, inducible nitric oxide synthase (iNOS), nuclear factor-kappa B (NF-κB)-p65, and phospho-NF-κB-p65 (NF-κB-pp65) in the testes were examined by western blot and/or immunohistochemical staining. RESULTS Sustained exposure to D-gal/NaNO2 caused a deterioration of sperm quality and testes morphology in this rapid aging mouse model. BZBS treatment curtailed these alterations. These beneficial effects were associated with increased serum levels of TAC, GSH/GSSG, T, E2, and FSH, and decreased levels of MDA, TNF-α, and 8-OH-dG. BZBS treatment also downregulated the expressions of P53, iNOS, and NF-κB-pp65, as well as upregulated the expressions of Sirt6 and CYP19 in aging testes. CONCLUSIONS BZBS preserves testicular morphology and spermatogenesis possibly via inhibition of oxidative stress and the modulation of the Sirt6/P53 and Sirt6/NF-κB signaling pathways. The results shed light on the beneficial effect of BZBS on sperm quality and fertility in aging males.
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Affiliation(s)
- Lin Li
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Beibei Chen
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Tian An
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Hao Zhang
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Bingke Xia
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Rui Li
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Ruyuan Zhu
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Yimiao Tian
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Lili Wang
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Dandan Zhao
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Fangfang Mo
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Yu Li
- Department of Histo-embryology, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Ge Yang
- The Geriatric Department, Guang'an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China, Beijing, 100053, China.
| | - Alexander N Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical Sciences, Moscow, 125315, Russia.
| | - Marc Prentki
- Departments of Nutrition and Biochemistry and Montreal Diabetes Research Center, CRCHUM and Université de Montréal, Montréal, QC, Canada.
| | - Dongwei Zhang
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Guangjian Jiang
- Diabetes Research Centre, Traditional Chinese Medicine School, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Xiaofeng Zhu
- Department of Chinese Medicine, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China.
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31
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Wang M, Lin H. Understanding the Function of Mammalian Sirtuins and Protein Lysine Acylation. Annu Rev Biochem 2021; 90:245-285. [PMID: 33848425 DOI: 10.1146/annurev-biochem-082520-125411] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Protein lysine acetylation is an important posttranslational modification that regulates numerous biological processes. Targeting lysine acetylation regulatory factors, such as acetyltransferases, deacetylases, and acetyl-lysine recognition domains, has been shown to have potential for treating human diseases, including cancer and neurological diseases. Over the past decade, many other acyl-lysine modifications, such as succinylation, crotonylation, and long-chain fatty acylation, have also been investigated and shown to have interesting biological functions. Here, we provide an overview of the functions of different acyl-lysine modifications in mammals. We focus on lysine acetylation as it is well characterized, and principles learned from acetylation are useful for understanding the functions of other lysine acylations. We pay special attention to the sirtuins, given that the study of sirtuins has provided a great deal of information about the functions of lysine acylation. We emphasize the regulation of sirtuins to illustrate that their regulation enables cells to respond to various signals and stresses.
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Affiliation(s)
- Miao Wang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA;
| | - Hening Lin
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA; .,Howard Hughes Medical Institute, Cornell University, Ithaca, New York 14853, USA
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32
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Maissan P, Mooij EJ, Barberis M. Sirtuins-Mediated System-Level Regulation of Mammalian Tissues at the Interface between Metabolism and Cell Cycle: A Systematic Review. BIOLOGY 2021; 10:biology10030194. [PMID: 33806509 PMCID: PMC7999230 DOI: 10.3390/biology10030194] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/20/2021] [Accepted: 02/25/2021] [Indexed: 02/06/2023]
Abstract
Sirtuins are a family of highly conserved NAD+-dependent proteins and this dependency links Sirtuins directly to metabolism. Sirtuins' activity has been shown to extend the lifespan of several organisms and mainly through the post-translational modification of their many target proteins, with deacetylation being the most common modification. The seven mammalian Sirtuins, SIRT1 through SIRT7, have been implicated in regulating physiological responses to metabolism and stress by acting as nutrient sensors, linking environmental and nutrient signals to mammalian metabolic homeostasis. Furthermore, mammalian Sirtuins have been implicated in playing major roles in mammalian pathophysiological conditions such as inflammation, obesity and cancer. Mammalian Sirtuins are expressed heterogeneously among different organs and tissues, and the same holds true for their substrates. Thus, the function of mammalian Sirtuins together with their substrates is expected to vary among tissues. Any therapy depending on Sirtuins could therefore have different local as well as systemic effects. Here, an introduction to processes relevant for the actions of Sirtuins, such as metabolism and cell cycle, will be followed by reasoning on the system-level function of Sirtuins and their substrates in different mammalian tissues. Their involvement in the healthy metabolism and metabolic disorders will be reviewed and critically discussed.
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Affiliation(s)
- Parcival Maissan
- Synthetic Systems Biology and Nuclear Organization, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands;
| | - Eva J. Mooij
- Systems Biology, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, Surrey, UK;
- Centre for Mathematical and Computational Biology, CMCB, University of Surrey, Guildford GU2 7XH, Surrey, UK
| | - Matteo Barberis
- Synthetic Systems Biology and Nuclear Organization, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands;
- Systems Biology, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, Surrey, UK;
- Centre for Mathematical and Computational Biology, CMCB, University of Surrey, Guildford GU2 7XH, Surrey, UK
- Correspondence: or ; Tel.: +44-1483-684-610
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33
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Liu G, Chen H, Liu H, Zhang W, Zhou J. Emerging roles of SIRT6 in human diseases and its modulators. Med Res Rev 2021; 41:1089-1137. [PMID: 33325563 PMCID: PMC7906922 DOI: 10.1002/med.21753] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/27/2020] [Accepted: 11/01/2020] [Indexed: 12/13/2022]
Abstract
The biological functions of sirtuin 6 (SIRT6; e.g., deacetylation, defatty-acylation, and mono-ADP-ribosylation) play a pivotal role in regulating lifespan and several fundamental processes controlling aging such as DNA repair, gene expression, and telomeric maintenance. Over the past decades, the aberration of SIRT6 has been extensively observed in diverse life-threatening human diseases. In this comprehensive review, we summarize the critical roles of SIRT6 in the onset and progression of human diseases including cancer, inflammation, diabetes, steatohepatitis, arthritis, cardiovascular diseases, neurodegenerative diseases, viral infections, renal and corneal injuries, as well as the elucidation of the related signaling pathways. Moreover, we discuss the advances in the development of small molecule SIRT6 modulators including activators and inhibitors as well as their pharmacological profiles toward potential therapeutics for SIRT6-mediated diseases.
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Affiliation(s)
- Gang Liu
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555, USA
| | - Haiying Chen
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555, USA
| | - Hua Liu
- Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Wenbo Zhang
- Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Jia Zhou
- Chemical Biology Program, Department of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555, USA
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Maude H, Sanchez-Cabanillas C, Cebola I. Epigenetics of Hepatic Insulin Resistance. Front Endocrinol (Lausanne) 2021; 12:681356. [PMID: 34046015 PMCID: PMC8147868 DOI: 10.3389/fendo.2021.681356] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 04/20/2021] [Indexed: 01/14/2023] Open
Abstract
Insulin resistance (IR) is largely recognized as a unifying feature that underlies metabolic dysfunction. Both lifestyle and genetic factors contribute to IR. Work from recent years has demonstrated that the epigenome may constitute an interface where different signals may converge to promote IR gene expression programs. Here, we review the current knowledge of the role of epigenetics in hepatic IR, focusing on the roles of DNA methylation and histone post-translational modifications. We discuss the broad epigenetic changes observed in the insulin resistant liver and its associated pathophysiological states and leverage on the wealth of 'omics' studies performed to discuss efforts in pinpointing specific loci that are disrupted by these changes. We envision that future studies, with increased genomic resolution and larger cohorts, will further the identification of biomarkers of early onset hepatic IR and assist the development of targeted interventions. Furthermore, there is growing evidence to suggest that persistent epigenetic marks may be acquired over prolonged exposure to disease or deleterious exposures, highlighting the need for preventative medicine and long-term lifestyle adjustments to avoid irreversible or long-term alterations in gene expression.
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Affiliation(s)
| | | | - Inês Cebola
- *Correspondence: Hannah Maude, ; Inês Cebola,
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Asif S, Morrow NM, Mulvihill EE, Kim KH. Understanding Dietary Intervention-Mediated Epigenetic Modifications in Metabolic Diseases. Front Genet 2020; 11:590369. [PMID: 33193730 PMCID: PMC7593700 DOI: 10.3389/fgene.2020.590369] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 09/21/2020] [Indexed: 12/12/2022] Open
Abstract
The global prevalence of metabolic disorders, such as obesity, diabetes and fatty liver disease, is dramatically increasing. Both genetic and environmental factors are well-known contributors to the development of these diseases and therefore, the study of epigenetics can provide additional mechanistic insight. Dietary interventions, including caloric restriction, intermittent fasting or time-restricted feeding, have shown promising improvements in patients' overall metabolic profiles (i.e., reduced body weight, improved glucose homeostasis), and an increasing number of studies have associated these beneficial effects with epigenetic alterations. In this article, we review epigenetic changes involved in both metabolic diseases and dietary interventions in primary metabolic tissues (i.e., adipose, liver, and pancreas) in hopes of elucidating potential biomarkers and therapeutic targets for disease prevention and treatment.
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Affiliation(s)
- Shaza Asif
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Nadya M. Morrow
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Erin E. Mulvihill
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Kyoung-Han Kim
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
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Tian H, Liu S, Ren J, Lee JKW, Wang R, Chen P. Role of Histone Deacetylases in Skeletal Muscle Physiology and Systemic Energy Homeostasis: Implications for Metabolic Diseases and Therapy. Front Physiol 2020; 11:949. [PMID: 32848876 PMCID: PMC7431662 DOI: 10.3389/fphys.2020.00949] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/14/2020] [Indexed: 12/11/2022] Open
Abstract
Skeletal muscle is the largest metabolic organ in the human body and is able to rapidly adapt to drastic changes during exercise. Histone acetyltransferases (HATs) and histone deacetylases (HDACs), which target histone and non-histone proteins, are two major enzyme families that control the biological process of histone acetylation and deacetylation. Balance between these two enzymes serves as an essential element for gene expression and metabolic and physiological function. Genetic KO/TG murine models reveal that HDACs possess pivotal roles in maintaining skeletal muscles' metabolic homeostasis, regulating skeletal muscles motor adaptation and exercise capacity. HDACs may be involved in mitochondrial remodeling, insulin sensitivity regulation, turn on/off of metabolic fuel switching and orchestrating physiological homeostasis of skeletal muscles from the process of myogenesis. Moreover, many myogenic factors and metabolic factors are modulated by HDACs. HDACs are considered as therapeutic targets in clinical research for treatment of cancer, inflammation, and neurological and metabolic-related diseases. This review will focus on physiological function of HDACs in skeletal muscles and provide new ideas for the treatment of metabolic diseases.
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Affiliation(s)
- Haili Tian
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Sujuan Liu
- Department of Anatomy and Histology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Jun Ren
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai, China
| | - Jason Kai Wei Lee
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Global Asia Institute, National University of Singapore, Singapore, Singapore
- N.1 Institute for Health, National University of Singapore, Singapore, Singapore
| | - Ru Wang
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Peijie Chen
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
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BxPC-3-Derived Small Extracellular Vesicles Induce FOXP3+ Treg through ATM-AMPK-Sirtuins-Mediated FOXOs Nuclear Translocations. iScience 2020; 23:101431. [PMID: 32798974 PMCID: PMC7452591 DOI: 10.1016/j.isci.2020.101431] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 06/27/2020] [Accepted: 07/30/2020] [Indexed: 12/13/2022] Open
Abstract
Immunotherapy in pancreatic ductal adenocarcinoma (PDAC) treatment faces serious challenges, due particularly to the poor immunogenicity. Cancer cell-derived small extracellular vesicles (sEVs) play important roles in damaging the immune system. However, the effects of pancreatic cancer-derived sEVs on T lymphocytes are unknown. Here we investigated changes in phenotypes and signal transduction pathways in sEVs-treated T lymphocytes. We identified the overexpression of immune checkpoint proteins PD-1, PD-L1, CTLA4, and Tim-3 and the enrichment of FOXP3+ Treg cluster in sEVs-treated T lymphocytes by CyTOF. Gene set enrichment analysis revealed that DNA damage response and metabolic pathways might be involved in sEVs-induced Tregs. ATM, AMPK, SIRT1, SIRT2, and SIRT6 were activated sequentially in sEVs-treated T lymphocytes and essential for sEVs-upregulated expressions of FOXO1A, FOXO3A, and FOXP3. Our study reveals the impact and mechanism of pancreatic cancer cell-derived sEVs on T lymphocytes and may provide insights into developing immunotherapy strategies for PDAC treatment. Human pancreatic cancer cells-derived sEVs induce Treg promotion DNA damage responses and metabolism are altered in sEVs-stimulated T lymphocytes ATM-AMPK-SIRT1/2/6-FOXO1A/3A axis plays a role in sEVs-induced Treg FOXO1A, FOXO3A, and FOXP3 are highly expressed in pancreatic cancer-involved lymph nodes
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Ferrara G, Benzi A, Sturla L, Marubbi D, Frumento D, Spinelli S, Abbotto E, Ivaldi F, von Holtey M, Murone M, Nencioni A, Uccelli A, Bruzzone S. Sirt6 inhibition delays the onset of experimental autoimmune encephalomyelitis by reducing dendritic cell migration. J Neuroinflammation 2020; 17:228. [PMID: 32736564 PMCID: PMC7393881 DOI: 10.1186/s12974-020-01906-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/20/2020] [Indexed: 01/14/2023] Open
Abstract
Background Experimental autoimmune encephalomyelitis (EAE) is the most common animal model of multiple sclerosis (MS), a neuroinflammatory and demyelinating disease characterized by multifocal perivascular infiltrates of immune cells. Although EAE is predominantly considered a T helper 1-driven autoimmune disease, mounting evidence suggests that activated dendritic cells (DC), which are the bridge between innate and adaptive immunity, also contribute to its pathogenesis. Sirtuin 6 (SIRT6), a NAD+-dependent deacetylase involved in genome maintenance and in metabolic homeostasis, regulates DC activation, and its pharmacological inhibition could, therefore, play a role in EAE development. Methods EAE was induced in female C57bl/6 mice by MOG35-55 injection. The effect of treatment with a small compound SIRT6 inhibitor, administered according to therapeutic and preventive protocols, was assessed by evaluating the clinical EAE score. SIRT6 inhibition was confirmed by Western blot analysis by assessing the acetylation of histone 3 lysine 9, a known SIRT6 substrate. The expression of DC activation and migration markers was evaluated by FACS in mouse lymph nodes. In addition, the expression of inflammatory and anti-inflammatory cytokines in the spinal cord were assessed by qPCR. T cell infiltration in spinal cords was evaluated by immunofluorescence imaging. The effect of Sirt6 inhibition on the migration of resting and activated bone marrow-derived dendritic cells was investigated in in vitro chemotaxis assays. Results Preventive pharmacological Sirt6 inhibition effectively delayed EAE disease onset through a novel regulatory mechanism, i.e., by reducing the representation of CXCR4-positive and of CXCR4/CCR7-double-positive DC in lymph nodes. The delay in EAE onset correlated with the early downregulation in the expression of CD40 on activated lymph node DC, with increased level of the anti-inflammatory cytokine IL-10, and with a reduced encephalitogenic T cell infiltration in the central nervous system. Consistent with the in vivo data, in vitro pharmacological Sirt6 inhibition in LPS-stimulated, bone marrow-derived DC reduced CCL19/CCL21- and SDF-1-induced DC migration. Conclusions Our findings indicate the ability of Sirt6 inhibition to impair DC migration, to downregulate pathogenic T cell inflammatory responses and to delay EAE onset. Therefore, Sirt6 might represent a valuable target for developing novel therapeutic agents for the treatment of early stages of MS, or of other autoimmune disorders.
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Affiliation(s)
- Giovanni Ferrara
- Ospedale Policlinico San Martino, IRCCS, Largo R. Benzi, 10, 16132, Genova, Italy.
| | - Andrea Benzi
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
| | - Laura Sturla
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
| | - Daniela Marubbi
- Ospedale Policlinico San Martino, IRCCS, Largo R. Benzi, 10, 16132, Genova, Italy.,Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
| | - Davide Frumento
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
| | - Sonia Spinelli
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
| | - Elena Abbotto
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
| | - Federico Ivaldi
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genova, Genova, Italy
| | | | | | - Alessio Nencioni
- Ospedale Policlinico San Martino, IRCCS, Largo R. Benzi, 10, 16132, Genova, Italy.,Department of Internal Medicine and Medical Specialties (DIMI), University of Genova, Genova, Italy
| | - Antonio Uccelli
- Ospedale Policlinico San Martino, IRCCS, Largo R. Benzi, 10, 16132, Genova, Italy.,Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genova, Genova, Italy
| | - Santina Bruzzone
- Department of Experimental Medicine (DIMES), University of Genova, Genova, Italy
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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: 36] [Impact Index Per Article: 9.0] [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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40
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Wang T, Wang Y, Liu L, Jiang Z, Li X, Tong R, He J, Shi J. Research progress on sirtuins family members and cell senescence. Eur J Med Chem 2020; 193:112207. [PMID: 32222662 DOI: 10.1016/j.ejmech.2020.112207] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 02/13/2020] [Accepted: 03/04/2020] [Indexed: 02/05/2023]
Abstract
Human aging is a phenomenon of gradual decline and loss of cell, tissue, organ and other functions under the action of external environment and internal factors. It is mainly related to genomic instability, telomere wear, mitochondrial dysfunction, protein balance disorder, antioxidant damage, microRNA expression disorder and so on. Sirtuins protein is a kind of deacetylase which can regulate cell metabolism and participate in a variety of cell physiological functions. It has been found that sirtuins family can prolong the lifespan of yeast. Sirtuins can inhibit human aging through many signaling pathways, including apoptosis signaling pathway, mTOR signaling pathway, sirtuins signaling pathway, AMPK signaling pathway, phosphatidylinositol 3 kinase (PI3K) signaling pathway and so on. Based on this, this paper reviews the action principle of anti-aging star members of sirtuins family Sirt1, Sirt3 and Sirt6 on anti-aging related signaling pathways and typical compounds, in order to provide ideas for the screening of anti-aging compounds of sirtuins family members.
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Affiliation(s)
- Ting Wang
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Yujue Wang
- Department of Obstetrics and Gynecology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, 610072, China
| | - Li Liu
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Zhongliang Jiang
- Miller School of Medicine, University of Miami, Miami, FL, 33136, USA
| | - Xingxing Li
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Rongsheng Tong
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Jun He
- State Key Laboratory of Biotherapy, Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital of Sichuan University, Chengdu, 610041, China.
| | - Jianyou Shi
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
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41
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Li Z, Xu K, Guo Y, Ping L, Gao Y, Qiu Y, Ni J, Liu Q, Wang Z. A high-fat diet reverses metabolic disorders and premature aging by modulating insulin and IGF1 signaling in SIRT6 knockout mice. Aging Cell 2020; 19:e13104. [PMID: 31967391 PMCID: PMC7059164 DOI: 10.1111/acel.13104] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 12/04/2019] [Accepted: 12/30/2019] [Indexed: 12/26/2022] Open
Abstract
Mammalian sirtuin 6 (SIRT6) is involved in the regulation of many essential processes, especially metabolic homeostasis. SIRT6 knockout mice undergo premature aging and die at age ~4 weeks. Severe glycometabolic disorders have been found in SIRT6 knockout mice, and whether a dietary intervention can rescue SIRT6 knockout mice remains unknown. In our study, we found that at the same calorie intake, a high‐fat diet dramatically increased the lifespan of SIRT6 knockout mice to 26 weeks (males) and 37 weeks (females), reversed multi‐organ atrophy, and reduced body weight, hypoglycemia, and premature aging. Furthermore, the high‐fat diet partially but significantly normalized the global gene expression profile in SIRT6 knockout mice. Regarding the mechanism, excessive glucose uptake and glycolysis induced by the SIRT6 deficiency were attenuated in skeletal muscle through inhibition of insulin and IGF1 signaling by the high‐fat diet. Similarly, fatty acids but not ketone bodies inhibited glucose uptake, glycolysis, and senescence in SIRT6 knockout fibroblasts, whereas PI3K inhibition antagonized the effects of a high‐fatty‐acid medium in vitro. Overall, the high‐fat diet dramatically reverses numerous consequences of SIRT6 deficiency through modulation of insulin and IGF1 signaling, providing a new basis for elucidation of SIRT6 and fatty‐acid functions and supporting novel therapeutic approaches against metabolic disorders and aging‐related diseases.
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Affiliation(s)
- Zhongchi Li
- Protein Science Key Laboratory of the Ministry of Education School of Pharmaceutical Sciences Tsinghua University Beijing China
| | - Kang Xu
- Protein Science Key Laboratory of the Ministry of Education School of Pharmaceutical Sciences Tsinghua University Beijing China
| | - Yannan Guo
- Protein Science Key Laboratory of the Ministry of Education School of Pharmaceutical Sciences Tsinghua University Beijing China
| | - Lu Ping
- 8‐year MD Program Peking Union Medical College Beijing China
| | - Yuqi Gao
- Protein Science Key Laboratory of the Ministry of Education School of Pharmaceutical Sciences Tsinghua University Beijing China
| | - Ying Qiu
- School of Medicine Tsinghua University Beijing China
| | - Jianquan Ni
- School of Medicine Tsinghua University Beijing China
| | - Qingfei Liu
- Protein Science Key Laboratory of the Ministry of Education School of Pharmaceutical Sciences Tsinghua University Beijing China
| | - Zhao Wang
- Protein Science Key Laboratory of the Ministry of Education School of Pharmaceutical Sciences Tsinghua University Beijing China
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Hong J, Mei C, Abbas Raza SH, Khan R, Cheng G, Zan L. SIRT6 cooperates with SIRT5 to regulate bovine preadipocyte differentiation and lipid metabolism via the AMPKα signaling pathway. Arch Biochem Biophys 2020; 681:108260. [PMID: 31926163 DOI: 10.1016/j.abb.2020.108260] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 12/10/2019] [Accepted: 01/04/2020] [Indexed: 12/29/2022]
Abstract
Preadipocyte differentiation and lipid synthesis are critical steps for intramuscular fat (IMF) deposition and lipid metabolism homeostasis. IMF content of beef not only determines the ratio of muscle to adipose, but also determines the beef quality, flavor, and sensory characteristics. Maintaining lipid metabolism homeostasis is the key means of preventing and treating diabetes, obesity, and other metabolic diseases. SIRT6, which is an ADP-ribosyltransferase and NAD+-dependent deacetylase of acetyl and long-chain fatty acyl groups, playing central roles in lipid and glucose metabolism, is closely related to the occurrence of diabetes and obesity caused by overnutrition and aging. This study was based on bovine preadipocyte differentiation and an obese mice model, and comprehensively used transcriptome sequencing (RNA-seq) and morphological identification methods to explore the effects of inhibition of SIRT6 on differentiation and lipid synthesis, and related molecular mechanisms. Additionally, the feedback synergistic regulation of SIRT5 and SIRT6 on differentiation and lipid deposition was analyzed. The results showed that in the differentiation process of bovine preadipocytes, inhibition of SIRT5 significantly promoted SIRT6 expression. In addition, SIRT6 inhibited bovine preadipocyte differentiation and lipid synthesis, cooperating with SIRT5 to decrease lipid deposition, and repressed cell cycle arrest of preadipocytes. Moreover, in vivo verification experiments also obtained consistent results. Furthermore, SIRT6 inhibited preadipocyte differentiation and lipid deposition by activating the adenosine monophosphate activated protein kinase alpha (AMPKα) pathway. The above results provided a novel approach for understanding the functions of SIRT6 in regulating bovine adipocyte differentiation and lipid metabolism, as well as a new target for the treatment of diabetes and obesity in a clinical setting.
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Affiliation(s)
- Jieyun Hong
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Chugang Mei
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China; National Beef Cattle Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Sayed Haidar Abbas Raza
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Rajwali Khan
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Gong Cheng
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China; National Beef Cattle Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, Shaanxi, China; National Beef Cattle Improvement Center, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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43
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Gilani N, Haghshenas R, Esmaeili M. Application of multivariate longitudinal models in SIRT6, FBS, and BMI analysis of the elderly. Aging Male 2019; 22:260-265. [PMID: 29901417 DOI: 10.1080/13685538.2018.1477933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Objective: SIRT6 is a main regulator of metabolism and lifespan and its importance has been implicated in the prevention against aging-related diseases. The objective of this study was to examine the application of multivariate longitudinal models in SIRT6, FBS, and BMI analysis in the elderly men after eight weeks concurrent training with supplementation of l-arginine (l-Arg). Methods: Thirty two elderly men with mean age of 63.09 ± 3.71 years were randomly divided into four equal-sized groups (each n = 8); Exercise + supplement (ES) group; exercise + placebo (EP) group; supplement (S) group and control (C) group. The ES and EP groups performed the eight weeks of concurrent training, three sessions per week. Group ES and group S consumed 1000 mg of l-Arg per day at 8:00 pm. Measurements of biochemical variables were done by ELISA Reader method. For analytical purposes, we used the paired sample t-test and multivariate longitudinal modeling with generalized estimating equation (GEE) methodology. All analyses have been implemented in R-3.4.1. p Values less than .05 were considered statistically significant. Results: With respect to significant association between sirt6, FBS, and BMI, this study showed that synergy effect of training and supplementation was greater than the sum of their individual effects on SIRT6 (β = 0.79, p < .001), FBS (β = -5.56, p = .022), and BMI (β = -3.89; p = .041). Also exercise alone had a significantly larger effect than supplementation alone on responses. Conclusions: It can be concluded that the joint usage of concurrent training and supplement of l-Arg for elderly men could improve the metabolism and body composition.
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Affiliation(s)
- Neda Gilani
- Department of Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Rouhollah Haghshenas
- Department of Sport Sciences, Faculty of Humanities, Semnan University , Semnan , Iran
| | - Mahmoud Esmaeili
- Department of Sport Sciences, Faculty of Humanities, Semnan University , Semnan , Iran
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44
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Kim HG, Huang M, Xin Y, Zhang Y, Zhang X, Wang G, Liu S, Wan J, Ahmadi AR, Sun Z, Liangpunsakul S, Xiong X, Dong XC. The epigenetic regulator SIRT6 protects the liver from alcohol-induced tissue injury by reducing oxidative stress in mice. J Hepatol 2019; 71:960-969. [PMID: 31295533 PMCID: PMC6801027 DOI: 10.1016/j.jhep.2019.06.019] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 05/29/2019] [Accepted: 06/24/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND & AIMS As a nicotinamide adenine dinucleotide-dependent deacetylase and a key epigenetic regulator, sirtuin 6 (SIRT6) has been implicated in the regulation of metabolism, DNA repair, and inflammation. However, the role of SIRT6 in alcohol-related liver disease (ALD) remains unclear. The aim of this study was to investigate the function and mechanism of SIRT6 in ALD pathogenesis. METHODS We developed and characterized Sirt6 knockout (KO) and transgenic mouse models that were treated with either control or ethanol diet. Hepatic steatosis, inflammation, and oxidative stress were analyzed using biochemical and histological methods. Gene regulation was analyzed by luciferase reporter and chromatin immunoprecipitation assays. RESULTS The Sirt6 KO mice developed severe liver injury characterized by a remarkable increase of oxidative stress and inflammation, whereas the Sirt6 transgenic mice were protected from ALD via normalization of hepatic lipids, inflammatory response, and oxidative stress. Our molecular analysis has identified a number of novel Sirt6-regulated genes that are involved in antioxidative stress, including metallothionein 1 and 2 (Mt1 and Mt2). Mt1/2 genes were downregulated in the livers of Sirt6 KO mice and patients with alcoholic hepatitis. Overexpression of Mt1 in the liver of Sirt6 KO mice improved ALD by reducing hepatic oxidative stress and inflammation. We also identified a critical link between SIRT6 and metal regulatory transcription factor 1 (Mtf1) via a physical interaction and functional coactivation. Mt1/2 promoter reporter assays showed a strong synergistic effect of SIRT6 on the transcriptional activity of Mtf1. CONCLUSIONS Our data suggest that SIRT6 plays a critical protective role against ALD and it may serve as a potential therapeutic target for ALD. LAY SUMMARY The liver, the primary organ for ethanol metabolism, can be damaged by the byproducts of ethanol metabolism, including reactive oxygen species. In this study, we have identified a key epigenetic regulator SIRT6 that plays a critical role in protecting the liver from oxidative stress-induced liver injury. Thus, our data suggest that SIRT6 may be a potential therapeutic target for alcohol-related liver disease.
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Affiliation(s)
- Hyeong Geug Kim
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
| | - Menghao Huang
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.,Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
| | - Yue Xin
- School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan, 453003, P.R. China,Xinxiang Key Laboratory of Metabolism and Integrative Physiology, Xinxiang Medical University, Xinxiang, Henan, 453003, P.R. China
| | - Yang Zhang
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
| | - Xinge Zhang
- School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan, 453003, P.R. China,Xinxiang Key Laboratory of Metabolism and Integrative Physiology, Xinxiang Medical University, Xinxiang, Henan, 453003, P.R. China
| | - Gaihong Wang
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
| | - Sheng Liu
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
| | - Jun Wan
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.,Center of Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
| | - Ali Reza Ahmadi
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Zhaoli Sun
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Suthat Liangpunsakul
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.,Roudebush Veterans Administration Medical Center, Indianapolis, Indiana 46202, USA
| | - Xiwen Xiong
- School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China; Xinxiang Key Laboratory of Metabolism and Integrative Physiology, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
| | - Xiaocheng Charlie Dong
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
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Abstract
The sirtuin family of nicotinamide adenine dinucleotide-dependent deacylases (SIRT1-7) are thought to be responsible, in large part, for the cardiometabolic benefits of lean diets and exercise and when upregulated can delay key aspects of aging. SIRT1, for example, protects against a decline in vascular endothelial function, metabolic syndrome, ischemia-reperfusion injury, obesity, and cardiomyopathy, and SIRT3 is protective against dyslipidemia and ischemia-reperfusion injury. With increasing age, however, nicotinamide adenine dinucleotide levels and sirtuin activity steadily decrease, and the decline is further exacerbated by obesity and sedentary lifestyles. Activation of sirtuins or nicotinamide adenine dinucleotide repletion induces angiogenesis, insulin sensitivity, and other health benefits in a wide range of age-related cardiovascular and metabolic disease models. Human clinical trials testing agents that activate SIRT1 or boost nicotinamide adenine dinucleotide levels are in progress and show promise in their ability to improve the health of cardiovascular and metabolic disease patients.
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Affiliation(s)
- Alice E Kane
- From the Department of Genetics, Harvard Medical School, Boston, MA (A.E.K., D.A.S.)
| | - David A Sinclair
- From the Department of Genetics, Harvard Medical School, Boston, MA (A.E.K., D.A.S.).,Department of Pharmacology, The University of New South Wales, Sydney, Australia (D.A.S.)
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Chang AR, Ferrer CM, Mostoslavsky R. SIRT6, a Mammalian Deacylase with Multitasking Abilities. Physiol Rev 2019; 100:145-169. [PMID: 31437090 DOI: 10.1152/physrev.00030.2018] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mammalian sirtuins have emerged in recent years as critical modulators of multiple biological processes, regulating cellular metabolism, DNA repair, gene expression, and mitochondrial biology. As such, they evolved to play key roles in organismal homeostasis, and defects in these proteins have been linked to a plethora of diseases, including cancer, neurodegeneration, and aging. In this review, we describe the multiple roles of SIRT6, a chromatin deacylase with unique and important functions in maintaining cellular homeostasis. We attempt to provide a framework for such different functions, for the ability of SIRT6 to interconnect chromatin dynamics with metabolism and DNA repair, and the open questions the field will face in the future, particularly in the context of putative therapeutic opportunities.
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Affiliation(s)
- Andrew R Chang
- The Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, Massachusetts; and The Broad Institute of Harvard and MIT, Cambridge, Massachusetts
| | - Christina M Ferrer
- The Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, Massachusetts; and The Broad Institute of Harvard and MIT, Cambridge, Massachusetts
| | - Raul Mostoslavsky
- The Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, Massachusetts; and The Broad Institute of Harvard and MIT, Cambridge, Massachusetts
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47
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Xu D, Jiang X, He H, Liu D, Yang L, Chen H, Wu L, Geng G, Li Q. SIRT2 functions in aging, autophagy, and apoptosis in post-maturation bovine oocytes. Life Sci 2019; 232:116639. [PMID: 31295472 DOI: 10.1016/j.lfs.2019.116639] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/01/2019] [Accepted: 07/06/2019] [Indexed: 02/07/2023]
Abstract
AIMS Sirtuins have been implicated in the aging process, however, the functions of SIRT2 in post-maturation aging of oocytes are not fully understood. The purpose of the present investigation was to assess the roles of SIRT2 in aged oocytes and mechanisms involved. MAIN METHODS The fresh MII oocytes were aging in vitro, and treated with SIRT2 inhibitor (SirReal2), autophagy activator (Rapamycin), and autophagy inhibitor (3-Ma) for 24 h, respectively. Oocyte activation, cytoplasmic fragmentation, and spindle defects, mitochondrial distribution, ROS levels, ATP production, mitochondrial membrane potential, and early apoptosis were investigated. Western blotting was performed to determine LC3-II accumulation, SQSTM1 degradation, and caspase-3 activity. KEY FINDINGS SIRT2 expression gradually decreased in a time-dependent manner during oocyte aging. Treatment with SirReal2 significantly increased the rates of oocyte activation, cytoplasmic fragmentation, and spindle defects. In particular, the high ROS levels, abnormal mitochondrial distribution, low ATP production, and lost ΔΨm were observed in SirReal2-exposed oocytes. Further analysis revealed that LC3-II accumulation and SQSTM1 degradation were induced by SIRT2 inhibition. By performing early apoptosis analysis showed that oocyte aging was accompanied with cellular apoptosis, and SIRT2 inhibition increased apoptosis rates of aged oocytes. Importantly, upregulating autophagy with Rapamycin could mimic the effects of SIRT2 inhibition on apoptosis by increasing caspase-3 activation, whereas downregulating autophagy with 3-MA could abolish those effects by blocking caspase-3 activation. SIGNIFICANCE Our results suggest that SIRT2 inactivation is a key mechanism underlying of cellular aging, and SIRT2 inhibition contributes to autophagy-dependent cellular apoptosis in post-maturation oocytes.
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Affiliation(s)
- Dejun Xu
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
| | - Xiaohan Jiang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Huanshan He
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Dingbang Liu
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Li Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Huali Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Lin Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Guoxia Geng
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
| | - Qingwang Li
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
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48
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Foolad F, Khodagholi F, Javan M. Sirtuins in Multiple Sclerosis: The crossroad of neurodegeneration, autoimmunity and metabolism. Mult Scler Relat Disord 2019; 34:47-58. [PMID: 31228716 DOI: 10.1016/j.msard.2019.06.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/26/2019] [Accepted: 06/07/2019] [Indexed: 12/17/2022]
Abstract
Multiple Sclerosis (MS) is a challenging and disabling condition particularly in the secondary progressive (SP) phase of this disease. The available treatments cannot ameliorate or stop disease progression in this phase, and there is an urgent need to focus on effective therapies and the molecular pathways involved SPMS. Given the significant impact of neurodegeneration, autoimmunity and metabolic alterations in MS, focusing on the molecules that target these different pathways could help in finding new treatments. Sirtuins (SIRTs) are NAD+ dependent epigenetic and metabolic regulators, which have critical roles in the physiology of central nervous system, immune system and metabolism. Based on these facts, SIRTs are crucial candidates of therapeutic targets in MS and collecting the information related to MS disease for each SIRT individually is noteworthy and highlights the lack of investigation in each part. In this review we summarized the role of different sirtuins as key regulator in neurodegeneration, autoimmunity and metabolism pathways. We also clarify the rationale behind selecting SIRTs as therapeutic targets in MS disease by collecting the researches showing alteration of these proteins in human samples of MS patients and animal model of MS, and also the improvement of modeled animals after SIRT-directed treatments.
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Affiliation(s)
- Forough Foolad
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fariba Khodagholi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Javan
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran; Department of Brain and Cognitive Sciences, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
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49
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Yuan EF, Yang Y, Cheng L, Deng X, Chen SM, Zhou X, Liu SM. Hyperglycemia affects global 5-methylcytosine and 5-hydroxymethylcytosine in blood genomic DNA through upregulation of SIRT6 and TETs. Clin Epigenetics 2019; 11:63. [PMID: 30987683 PMCID: PMC6466651 DOI: 10.1186/s13148-019-0660-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Accepted: 03/31/2019] [Indexed: 01/20/2023] Open
Abstract
Background Accumulating evidence suggests that epigenetic changes play key roles in the pathogenesis of type 2 diabetes mellitus (T2DM). However, the dynamic regulation of 5-methylcytosine (5mC) and 5-hydroxymethylcytosine (5hmC) in diabetic peripheral blood DNA remains to be elucidated. Results We collected fasting blood samples (104 patients and 108 healthy controls) and glucose-stimulated blood samples at different time points (11 patients and 5 healthy controls underwent oral glucose tolerance test (OGTT)), as well as blood samples from six couples of diabetic and control rats. A HPLC-MS/MS system was used for quantifying global 5mC and 5hmC in genomic DNA from white blood cells (WBCs), and qPCR was performed for detecting mRNA expression of SIRT6 and TETs. We found that global 5mC decreased, while global 5hmC increased in both patients and diabetic rats, with lower 5mC being a risk factor of T2DM (OR = 0.524, 95%CI 0.402–0.683, p = 1.64 × 10−6). The OGTT data from patients showed that 5mC declined within 1 h and then returned to the fasting status at 2 h, while 5hmC rose from 0.5 h to 3 h with increasing glucose. However, the similar patterns were not found in the controls. The mRNA expression of TET2, TET3, and SIRT6 was upregulated in patients (p = 0.012, p = 0.026, and p = 0.035, respectively). The similar results were observed in diabetic OGTT and rats. Correlation analysis indicated that SIRT6 was positively correlated with TET2 in humans (r = 0.277, p < 0.001) and rats (r = 0.942, p < 0.001), in addition to a correlation between glucose and SIRT6 (r = 0.162, p = 0.045) and TET2 (r = 0.174, p = 0.036). Conclusions Hyperglycemia appeared to promote the mRNA expression of SIRT6 and TETs, which in turn might cause the dynamic changes of 5mC and 5hmC in WBCs from T2DM patients. Electronic supplementary material The online version of this article (10.1186/s13148-019-0660-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Er-Feng Yuan
- Department of Clinical Laboratory, Center for Gene Diagnosis & Program of Clinical Laboratory, Zhongnan Hospital of Wuhan University, 169# Donghu Road, Wuhan, 430071, Hubei Province, China.,Department of Clinical Laboratory, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan Province, China
| | - Ying Yang
- Department of Clinical Laboratory, Center for Gene Diagnosis & Program of Clinical Laboratory, Zhongnan Hospital of Wuhan University, 169# Donghu Road, Wuhan, 430071, Hubei Province, China
| | - Lin Cheng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, Hubei Province, China
| | - Xujing Deng
- Department of Clinical Laboratory, Center for Gene Diagnosis & Program of Clinical Laboratory, Zhongnan Hospital of Wuhan University, 169# Donghu Road, Wuhan, 430071, Hubei Province, China
| | - Shao-Min Chen
- Department of Clinical Laboratory, Center for Gene Diagnosis & Program of Clinical Laboratory, Zhongnan Hospital of Wuhan University, 169# Donghu Road, Wuhan, 430071, Hubei Province, China
| | - Xin Zhou
- Department of Clinical Laboratory, Center for Gene Diagnosis & Program of Clinical Laboratory, Zhongnan Hospital of Wuhan University, 169# Donghu Road, Wuhan, 430071, Hubei Province, China
| | - Song-Mei Liu
- Department of Clinical Laboratory, Center for Gene Diagnosis & Program of Clinical Laboratory, Zhongnan Hospital of Wuhan University, 169# Donghu Road, Wuhan, 430071, Hubei Province, China.
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50
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Simon M, Van Meter M, Ablaeva J, Ke Z, Gonzalez RS, Taguchi T, De Cecco M, Leonova KI, Kogan V, Helfand SL, Neretti N, Roichman A, Cohen HY, Meer MV, Gladyshev VN, Antoch MP, Gudkov AV, Sedivy JM, Seluanov A, Gorbunova V. LINE1 Derepression in Aged Wild-Type and SIRT6-Deficient Mice Drives Inflammation. Cell Metab 2019; 29:871-885.e5. [PMID: 30853213 PMCID: PMC6449196 DOI: 10.1016/j.cmet.2019.02.014] [Citation(s) in RCA: 262] [Impact Index Per Article: 52.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/02/2018] [Accepted: 02/22/2019] [Indexed: 01/07/2023]
Abstract
Mice deficient for SIRT6 exhibit a severely shortened lifespan, growth retardation, and highly elevated LINE1 (L1) activity. Here we report that SIRT6-deficient cells and tissues accumulate abundant cytoplasmic L1 cDNA, which triggers strong type I interferon response via activation of cGAS. Remarkably, nucleoside reverse-transcriptase inhibitors (NRTIs), which inhibit L1 retrotransposition, significantly improved health and lifespan of SIRT6 knockout mice and completely rescued type I interferon response. In tissue culture, inhibition of L1 with siRNA or NRTIs abrogated type I interferon response, in addition to a significant reduction of DNA damage markers. These results indicate that L1 activation contributes to the pathologies of SIRT6 knockout mice. Similarly, L1 transcription, cytoplasmic cDNA copy number, and type I interferons were elevated in the wild-type aged mice. As sterile inflammation is a hallmark of aging, we propose that modulating L1 activity may be an important strategy for attenuating age-related pathologies.
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Affiliation(s)
- Matthew Simon
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Michael Van Meter
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Julia Ablaeva
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Zhonghe Ke
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Raul S Gonzalez
- Department of Pathology, University of Rochester Medical Center, Rochester, NY 14627, USA
| | - Taketo Taguchi
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Marco De Cecco
- Institute for Translational Research, Ariel University, Ariel, Israel
| | - Katerina I Leonova
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Valeria Kogan
- Institute for Translational Research, Ariel University, Ariel, Israel
| | - Stephen L Helfand
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI 02912, USA
| | - Nicola Neretti
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI 02912, USA
| | - Asael Roichman
- Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Haim Y Cohen
- Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Margarita V Meer
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Vadim N Gladyshev
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Marina P Antoch
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Andrei V Gudkov
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - John M Sedivy
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI 02912, USA
| | - Andrei Seluanov
- Department of Biology, University of Rochester, Rochester, NY 14627, USA.
| | - Vera Gorbunova
- Department of Biology, University of Rochester, Rochester, NY 14627, USA.
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