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Lin L, Yang L, Wang N, Chen S, Du X, Chen R, Zhang H, Kong X. FGF10 protects against LPS-induced epithelial barrier injury and inflammation by inhibiting SIRT1-ferroptosis pathway in acute lung injury in mice. Int Immunopharmacol 2024; 127:111426. [PMID: 38147776 DOI: 10.1016/j.intimp.2023.111426] [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: 09/17/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 12/28/2023]
Abstract
Pulmonary alveolar epithelial cell injury is considered the main pathological and physiological change in acute lung injury. Ferroptosis in alveolar epithelial cells is one of crucial factors contributing to acute lung injury (ALI). Therefore, reducing ferroptosis and repair epithelial barrier is very necessary. More and more evidence suggested that FGF10 plays an important role in lung development and repair after injury. However, the relationship between FGF10 and ferroptosis remains unclear. This study aims to explore the regulatory role of FGF10 on ferroptosis in ALI. Differential gene expression analysis indicated that genes associated with ferroptosis showed that FGF10 can significantly alleviate LPS induced lung injury and epithelial barrier damage by decreasing levels of malonaldehyde(MDA), and lipid ROS. SIRT1 activator (Resveratrol) and inhibitor (EX527) are used in vivo showed that FGF10 protects ferroptosis of pulmonary epithelial cells through SIRT1 signal. Furthermore, knockdown of FGFR2 gene reduced the protective effect of FGF10 on acute lung injury in mice and SIRT1 activation. After the application of NRF2 inhibitor ML385 in vitro, the results showed that SIRT1 regulated the expression of ferroptosis related proteins NRF2, GPX4 and FTH1 are related to activation of NRF2. These data indicate that SIRT-ferroptosis was one of the critical mechanisms contributing to LPS-induced ALI. FGF10 is promising as a therapeutic candidate against ALI through inhibiting ferroptosis.
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Affiliation(s)
- Lidan Lin
- School of Basic Medical Sciences, Institute of Hypoxia Research, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Li Yang
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Nan Wang
- School of Basic Medical Sciences, Institute of Hypoxia Research, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Siyue Chen
- Department of Children's Respiration disease, the Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Xiaotong Du
- School of Pharmaceutical Sciences, Wenzhou Medical University, Zhejiang 315302, China
| | - Ran Chen
- School of Basic Medical Sciences, Institute of Hypoxia Research, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Hongyu Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Zhejiang 315302, China; Cixi Biomedical Research Institute, Wenzhou Medical University, Zhejiang 315302, China; Department of Pharmacy, Zhuji People's Hospital, Wenzhou Medical University, Zhuji, Shaoxing, Zhejiang, 311800, China
| | - Xiaoxia Kong
- School of Basic Medical Sciences, Institute of Hypoxia Research, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Cixi Biomedical Research Institute, Wenzhou Medical University, Zhejiang 315302, China.
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May MA, Tomanek L. Uncovering the roles of sirtuin activity and food availability during the onset of the heat shock response in the California mussel (Mytilus californianus): Implications for antioxidative stress responses. Comp Biochem Physiol B Biochem Mol Biol 2024; 269:110902. [PMID: 37690509 DOI: 10.1016/j.cbpb.2023.110902] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/13/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
Sirtuins are a class of NAD+-dependent deacylases, with known regulatory roles in energy metabolism and cellular stress responses in vertebrates. Previous work using marine mussels have suggested a similar role in invertebrates, providing a potential mechanism linking food availability and thermal sensitivity in Mytilids. Sirtuin inhibitors affect mussels' recovery from environmental stressors, including acute heat shock and well-fed mussels exposed to sirtuin inhibitors and/or acute heat shock respond differently than poorly fed mussels, at the protein and whole-organism levels. While this implies a relationship between sirtuins, food availability, and temperature, the direct effects of sirtuin inhibitors (nicotinamide and suramin) on sirtuin activity or their putative effectors have not been explicitly tested. In this study, adult Mytilus californianus were acclimated to a low or high food availability and exposed to one of the following treatments: control, acute heat shock, sirtuin inhibitors, or acute heat shock and sirtuin inhibitors. Mussels increased sirtuin activity during early recovery (5 h) from sirtuin inhibition and acute heat shock, but only if acclimated to a high food availability. Redox balance was also impacted in mussels acclimated to high food availability and exposed to sirtuin inhibitors, signifying interactions between ration, acute heat shock, and sirtuin inhibitors. Additionally, we found a correlation between sirtuin and superoxide dismutase activities, suggesting a potential regulatory role of oxidative stress by sirtuins. Following prolonged recovery (17 h), we found increased sirtuin activity in mussels acclimated to low food availability, indicating that endogenous sirtuin activity may be related to food availability in mussels.
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Affiliation(s)
- Melissa A May
- Florida Gulf Coast University, Fort Myers, FL 33965, USA; California Polytechnic State University, San Luis Obispo, CA 93407, USA.
| | - Lars Tomanek
- California Polytechnic State University, San Luis Obispo, CA 93407, USA
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Gencoglu H. Maca modulates fat and liver energy metabolism markers insulin, IRS1, leptin, and SIRT1 in rats fed normal and high-fat diets. Arch Physiol Biochem 2023; 129:323-329. [PMID: 32951476 DOI: 10.1080/13813455.2020.1821064] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Maca root extract on insulin, insulin receptor substrate-1 (IRS1), leptin, and NAD-dependent deacetylase sirtuin-1 (SIRT1), as well as body weight changes evaluated in this study for a 60 days model of normal and high-fat diet (HFD) fed rats. 28 male rats allocated to four groups: (i) Control, (ii) Maca (40 mg/kg/day), (iii) HFD, and (iv) HFD + Maca. After the 60 days of study, fat tissue and liver insulin levels decreased in the HFD and HFD + Maca groups in comparison to Control and Maca groups (p < .001). Maca group showed a significant IRS1 increase in the fat tissue (p < .0001). Leptin levels were the highest in the Maca group and the lowest in the HFD group in the fat tissue (p < .01). SIRT1 levels were found the highest in the Maca groups (p < .01). These results show the protective and regulatory effectiveness of Maca when fed with a normal or HFD diet.
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Affiliation(s)
- Hasan Gencoglu
- Department of Biology, Faculty of Science, Firat University, Elazig, Turkey
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Dumić J, Cvetko A, Abramović I, Šupraha Goreta S, Perović A, Njire Bratičević M, Kifer D, Sinčić N, Gornik O, Žarak M. Changes in Specific Biomarkers Indicate Cardiac Adaptive and Anti-inflammatory Response of Repeated Recreational SCUBA Diving. Front Cardiovasc Med 2022; 9:855682. [PMID: 35360010 PMCID: PMC8964121 DOI: 10.3389/fcvm.2022.855682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveRecreational SCUBA (rSCUBA) diving has become a highly popular and widespread sport. Yet, information on molecular events underlying (patho)physiological events that follow exposure to the specific environmental conditions (hyperbaric conditions, coldness, immersion, and elevated breathing pressure), in which rSCUBA diving is performed, remain largely unknown. Our previous study suggested that repeated rSCUBA diving triggers an adaptive response of cardiovascular and immune system. To elucidate further molecular events underlying cardiac and immune system adaptation and to exclude possible adverse effects we measured blood levels of specific cardiac and inflammation markers.MethodsThis longitudinal intervention study included fourteen recreational divers who performed five dives, one per week, on the depth 20–30 m that lasted 30 min, after the non-dive period of 5 months. Blood samples were taken immediately before and after the first, third, and fifth dives. Copeptin, immunoglobulins A, G and M, complement components C3 and C4, and differential blood count parameters, including neutrophil-to-lymphocyte ratio (NLR) were determined using standard laboratory methods. Cell-free DNA was measured by qPCR analysis and N-glycans released from IgG and total plasma proteins (TPP), were analyzed by hydrophilic interaction ultra-performance liquid chromatography.ResultsCopeptin level increased after the first dive but decreased after the third and fifth dive. Increases in immunoglobulins level after every dive and during whole studied period were observed, but no changes in C3, C4, and cfDNA level were detected. NLR increased only after the first dive. IgG and TPP N-glycosylation alterations toward anti-inflammatory status over whole studied period were manifested as an increase in monogalyctosylated and core-fucosylated IgG N-glycans and decrease in agalactosylated TPP N-glycans.ConclusionrSCUBA diving practiced on a regular basis promotes anti-inflammatory status thus contributing cardioprotection and conferring multiple health benefits.
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Affiliation(s)
- Jerka Dumić
- Department of Biochemistry and Molecular Biology, University of Zagreb Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Ana Cvetko
- Department of Biochemistry and Molecular Biology, University of Zagreb Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Irena Abramović
- Department of Medical Biology, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Sandra Šupraha Goreta
- Department of Biochemistry and Molecular Biology, University of Zagreb Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Antonija Perović
- Department of Laboratory Diagnostics, Dubrovnik General Hospital, Dubrovnik, Croatia
| | | | - Domagoj Kifer
- Department of Biophysics, University of Zagreb Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Nino Sinčić
- Department of Medical Biology, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Olga Gornik
- Department of Biochemistry and Molecular Biology, University of Zagreb Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Marko Žarak
- Clinical Department of Laboratory Diagnostics, Dubrava University Hospital, Zagreb, Croatia
- *Correspondence: Marko Žarak,
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Jayatunga DPW, Hone E, Khaira H, Lunelli T, Singh H, Guillemin GJ, Fernando B, Garg ML, Verdile G, Martins RN. Therapeutic Potential of Mitophagy-Inducing Microflora Metabolite, Urolithin A for Alzheimer's Disease. Nutrients 2021; 13:nu13113744. [PMID: 34836000 PMCID: PMC8617978 DOI: 10.3390/nu13113744] [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: 09/04/2021] [Revised: 09/28/2021] [Accepted: 10/12/2021] [Indexed: 12/18/2022] Open
Abstract
Mitochondrial dysfunction including deficits of mitophagy is seen in aging and neurodegenerative disorders including Alzheimer’s disease (AD). Apart from traditionally targeting amyloid beta (Aβ), the main culprit in AD brains, other approaches include investigating impaired mitochondrial pathways for potential therapeutic benefits against AD. Thus, a future therapy for AD may focus on novel candidates that enhance optimal mitochondrial integrity and turnover. Bioactive food components, known as nutraceuticals, may serve as such agents to combat AD. Urolithin A is an intestinal microbe-derived metabolite of a class of polyphenols, ellagitannins (ETs). Urolithin A is known to exert many health benefits. Its antioxidant, anti-inflammatory, anti-atherogenic, anti-Aβ, and pro-mitophagy properties are increasingly recognized. However, the underlying mechanisms of urolithin A in inducing mitophagy is poorly understood. This review discusses the mitophagy deficits in AD and examines potential molecular mechanisms of its activation. Moreover, the current knowledge of urolithin A is discussed, focusing on its neuroprotective properties and its potential to induce mitophagy. Specifically, this review proposes potential mechanisms by which urolithin A may activate and promote mitophagy.
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Affiliation(s)
- Dona Pamoda W. Jayatunga
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia; (D.P.W.J.); (E.H.); (B.F.); (G.V.)
| | - Eugene Hone
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia; (D.P.W.J.); (E.H.); (B.F.); (G.V.)
- Cooperative Research Centre for Mental Health, Carlton, VIC 3053, Australia
| | - Harjot Khaira
- Riddet Institute, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand; (H.K.); (T.L.); (H.S.); (M.L.G.)
| | - Taciana Lunelli
- Riddet Institute, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand; (H.K.); (T.L.); (H.S.); (M.L.G.)
| | - Harjinder Singh
- Riddet Institute, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand; (H.K.); (T.L.); (H.S.); (M.L.G.)
| | - Gilles J. Guillemin
- Department of Pharmacology, School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia;
- St. Vincent’s Centre for Applied Medical Research, Sydney, NSW 2011, Australia
| | - Binosha Fernando
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia; (D.P.W.J.); (E.H.); (B.F.); (G.V.)
| | - Manohar L. Garg
- Riddet Institute, Massey University, Private Bag 11222, Palmerston North 4442, New Zealand; (H.K.); (T.L.); (H.S.); (M.L.G.)
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Giuseppe Verdile
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia; (D.P.W.J.); (E.H.); (B.F.); (G.V.)
- School of Pharmacy and Biomedical Sciences, Faculty of Health Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
| | - Ralph N. Martins
- Centre of Excellence for Alzheimer’s Disease Research & Care, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia; (D.P.W.J.); (E.H.); (B.F.); (G.V.)
- Australian Alzheimer’s Research Foundation, Ralph and Patricia Sarich Neuroscience Research Institute, 8 Verdun Street., Nedlands, WA 6009, Australia
- Department of Biomedical Sciences, Macquarie University, Sydney, NSW 2109, Australia
- Correspondence: ; Tel.: +61-8-9347-4200
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Sirtuins and Renal Oxidative Stress. Antioxidants (Basel) 2021; 10:antiox10081198. [PMID: 34439446 PMCID: PMC8388938 DOI: 10.3390/antiox10081198] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/04/2021] [Accepted: 07/23/2021] [Indexed: 02/06/2023] Open
Abstract
Renal failure is a major health problem that is increasing worldwide. To improve clinical outcomes, we need to understand the basic mechanisms of kidney disease. Aging is a risk factor for the development and progression of kidney disease. Cells develop an imbalance of oxidants and antioxidants as they age, resulting in oxidative stress and the development of kidney damage. Calorie restriction (CR) is recognized as a dietary approach that promotes longevity, reduces oxidative stress, and delays the onset of age-related diseases. Sirtuins, a type of nicotinamide adenine dinucleotide (NAD)-dependent histone deacetylase, are considered to be anti-aging molecules, and CR induces their expression. The sirtuin family consists of seven enzymes (Sirt1–7) that are involved in processes and functions related to antioxidant and oxidative stress, such as DNA damage repair and metabolism through histone and protein deacetylation. In fact, a role for sirtuins in the regulation of antioxidants and redox substances has been suggested. Therefore, the activation of sirtuins in the kidney may represent a novel therapeutic strategy to enhancing resistance to many causative factors in kidney disease through the reduction of oxidative stress. In this review, we discuss the relationship between sirtuins and oxidative stress in renal disease.
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Zhu Q, Li XH, Chen HY, Jin QY. The effects of compound centella formula on OxInflammation and silent information regulator 1 in a high-fat diet/streptozotocin-induced diabetic kidney disease rat model. Exp Ther Med 2021; 22:962. [PMID: 34335904 PMCID: PMC8290408 DOI: 10.3892/etm.2021.10394] [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: 03/07/2020] [Accepted: 04/14/2021] [Indexed: 12/23/2022] Open
Abstract
The Chinese decoction compound centella formula (CCF) is clinically effective against diabetic kidney disease (DKD), but the exact mechanism remains unclear. The present study aimed to investigate the effects of CCF on OxInflammation and silent information regulator 1 (SIRT1) levels in rats with streptozotocin (STZ)-induced diabetes. Sprague-Dawley rats were divided into CCF, losartan, diabetic control (DC) and normal control (NC) groups (n=7). Except for the NC, all subgroups of rats were fed a high-fat diet for 112 days and received a single intraperitoneal injection of 35 mg/kg STZ on day 29. All rats were sacrificed on day 112. High-performance liquid chromatography was performed to analyse asiaticoside, astragaloside and triptolide levels in CCF (0.3400, 0.0640 and 0.0001 mg/ml, respectively). Fasting blood glucose, urine protein-to-creatinine ratio, serum creatinine and blood urea nitrogen were quantified. Periodic acid Schiff staining, H&E staining and transmission electron microscopy were used to examine kidney pathological changes. The mRNA and protein expression levels of SIRT1 in renal tissues were analysed by reverse transcription-quantitative PCR, western blotting and immunohistochemistry. Oxidative stress was evaluated by measuring the levels of superoxide dismutase (SOD), malondialdehyde (MDA) and nicotinamide adenine dinucleotide phosphate oxidase 4 (NOX4) in renal tissues. TNF-α and NF-κB p65 subunit in renal tissues were assessed for inflammation. Compared with the rats in the NC group, the rats in the DC group exhibited renal injury with proteinuria, decreased expression levels of SIRT1 and SOD (P<0.01) and increased levels of MDA, NOX4, TNF-α and NF-κB p65 (P<0.01). CCF treatment reduced proteinuria (P<0.01), alleviated renal damage, decreased MDA, NOX4, TNF-α and NF-κB p65 levels (P<0.01), increased SOD levels (P<0.05) and increased SIRT1 mRNA and protein expression levels (P<0.01). The present study indicates that CCF effectively protects the kidney from diabetes by inhibiting OxInflammation and upregulating SIRT1.
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Affiliation(s)
- Qin Zhu
- Department of Nephrology, Key Laboratory of Zhejiang Province, Management of Kidney Disease, Hangzhou Hospital of Traditional Chinese Medicine, Hangzhou, Zhejiang 310007, P.R. China
| | - Xiao-Hong Li
- Department of Nephrology, Key Laboratory of Zhejiang Province, Management of Kidney Disease, Hangzhou Hospital of Traditional Chinese Medicine, Hangzhou, Zhejiang 310007, P.R. China
| | - Hong-Yu Chen
- Department of Nephrology, Key Laboratory of Zhejiang Province, Management of Kidney Disease, Hangzhou Hospital of Traditional Chinese Medicine, Hangzhou, Zhejiang 310007, P.R. China
| | - Qin-Yang Jin
- Department of Cardiology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
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Liu QY, Zhuang Y, Song XR, Niu Q, Sun QS, Li XN, Li N, Liu BL, Huang F, Qiu ZX. Tanshinone IIA prevents LPS-induced inflammatory responses in mice via inactivation of succinate dehydrogenase in macrophages. Acta Pharmacol Sin 2021; 42:987-997. [PMID: 33028985 PMCID: PMC8149828 DOI: 10.1038/s41401-020-00535-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 09/10/2020] [Indexed: 12/12/2022] Open
Abstract
Metabolic reprogramming is associated with NLRP3 inflammasome activation in activated macrophages, contributing to inflammatory responses. Tanshinone IIA (Tan-IIA) is a major constituent from Salvia miltiorrhiza Bunge, which exhibits anti-inflammatory activity. In this study, we investigated the effects of Tan-IIA on inflammation in macrophages in focus on its regulation of metabolism and redox state. In lipopolysaccharides (LPS)-stimulated mouse bone marrow-derived macrophages (BMDMs), Tan-IIA (10 μM) significantly decreased succinate-boosted IL-1β and IL-6 production, accompanied by upregulation of IL-1RA and IL-10 release via inhibiting succinate dehydrogenase (SDH). Tan-IIA concentration dependently inhibited SDH activity with an estimated IC50 of 4.47 μM in LPS-activated BMDMs. Tan-IIA decreased succinate accumulation, suppressed mitochondrial reactive oxygen species production, thus preventing hypoxia-inducible factor-1α (HIF-1α) induction. Consequently, Tan-IIA reduced glycolysis and protected the activity of Sirtuin2 (Sirt2), an NAD+-dependent protein deacetylase, by raising the ratio of NAD+/NADH in activated macrophages. The acetylation of α-tubulin was required for the assembly of NLRP3 inflammasome; Tan-IIA increased the binding of Sirt2 to α-tubulin, and thus reduced the acetylation of α-tubulin, thus impairing this process. Sirt2 knockdown or application of Sirt2 inhibitor AGK-2 (10 μM) neutralized the effects of Tan-IIA, suggesting that Tan-IIA inactivated NLRP3 inflammasome in a manner dependent on Sirt2 regulation. The anti-inflammatory effects of Tan-IIA were observed in mice subjected to LPS challenge: pre-administration of Tan-IIA (20 mg/kg, ip) significantly attenuated LPS-induced acute inflammatory responses, characterized by elevated IL-1β but reduced IL-10 levels in serum. The peritoneal macrophages isolated from the mice displayed similar metabolic regulation. In conclusion, Tan-IIA reduces HIF-1α induction via SDH inactivation, and preserves Sirt2 activity via downregulation of glycolysis, contributing to suppression of NLRP3 inflammasome activation. This study provides a new insight into the anti-inflammatory action of Tan-IIA from the respect of metabolic and redox regulation.
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Affiliation(s)
- Qiu-Yan Liu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Yu Zhuang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xian-Rui Song
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Qun Niu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Qiu-Shuang Sun
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xiao-Nan Li
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Ning Li
- National Experimental Teaching Demonstration Center of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Bao-Lin Liu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Fang Huang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
| | - Zhi-Xia Qiu
- School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
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Bacterial Quorum-Sensing Signal Arrests Phytoplankton Cell Division and Impacts Virus-Induced Mortality. mSphere 2021; 6:6/3/e00009-21. [PMID: 33980670 PMCID: PMC8125044 DOI: 10.1128/msphere.00009-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Bacteria and phytoplankton form close associations in the ocean that are driven by the exchange of chemical compounds. The bacterial signal 2-heptyl-4-quinolone (HHQ) slows phytoplankton growth; however, the mechanism responsible remains unknown. Interactions between phytoplankton and heterotrophic bacteria fundamentally shape marine ecosystems by controlling primary production, structuring marine food webs, mediating carbon export, and influencing global climate. Phytoplankton-bacterium interactions are facilitated by secreted compounds; however, linking these chemical signals, their mechanisms of action, and their resultant ecological consequences remains a fundamental challenge. The bacterial quorum-sensing signal 2-heptyl-4-quinolone (HHQ) induces immediate, yet reversible, cellular stasis (no cell division or mortality) in the coccolithophore Emiliania huxleyi; however, the mechanism responsible remains unknown. Using transcriptomic and proteomic approaches in combination with diagnostic biochemical and fluorescent cell-based assays, we show that HHQ exposure leads to prolonged S-phase arrest in phytoplankton coincident with the accumulation of DNA damage and a lack of repair despite the induction of the DNA damage response (DDR). While this effect is reversible, HHQ-exposed phytoplankton were also protected from viral mortality, ascribing a new role of quorum-sensing signals in regulating multitrophic interactions. Furthermore, our data demonstrate that in situ measurements of HHQ coincide with areas of enhanced micro- and nanoplankton biomass. Our results suggest bacterial communication signals as emerging players that may be one of the contributing factors that help structure complex microbial communities throughout the ocean. IMPORTANCE Bacteria and phytoplankton form close associations in the ocean that are driven by the exchange of chemical compounds. The bacterial signal 2-heptyl-4-quinolone (HHQ) slows phytoplankton growth; however, the mechanism responsible remains unknown. Here, we show that HHQ exposure leads to the accumulation of DNA damage in phytoplankton and prevents its repair. While this effect is reversible, HHQ-exposed phytoplankton are also relieved of viral mortality, elevating the ecological consequences of this complex interaction. Further results indicate that HHQ may target phytoplankton proteins involved in nucleotide biosynthesis and DNA repair, both of which are crucial targets for viral success. Our results support microbial cues as emerging players in marine ecosystems, providing a new mechanistic framework for how bacterial communication signals mediate interspecies and interkingdom behaviors.
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MicroRNA-148b Inhibits the Malignant Biological Behavior of Melanoma by Reducing Sirtuin 7 Expression Levels. BIOMED RESEARCH INTERNATIONAL 2020; 2020:9568976. [PMID: 33274232 PMCID: PMC7700026 DOI: 10.1155/2020/9568976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 09/25/2020] [Accepted: 10/17/2020] [Indexed: 12/21/2022]
Abstract
There is growing evidence that microRNA-148b (miR-148b) can inhibit the growth of malignant cells while sirtuin 7 (SIRT7) may perform its carcinogenic effect by deacetylating H3K18. This study investigated the mechanism of miR-148b/SIRT7 on how it affects the malignant biological behavior of melanoma. It was established that the expression of miR-148b was downregulated in melanoma while that of SIRT7 was upregulated but negatively regulated by miR-148b through binding to the 3'UTR of SIRT7. Ectopic expression of miR-148b reduced the proliferation, migration, and invasion of melanoma cells, but SIRT7 reversed these functions of miR-148b. Moreover, tumor growth and metastasis experiments showed that miR-148b could significantly suppress proliferation and metastasis of melanoma in vivo. Overall, miR-148b inhibits the malignant biological behavior of melanoma by reducing the expression level of SIRT7. The development of miR-148b as a novel potential therapeutic approach for melanoma may be possible in the future.
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Biswas P, Dellanoce C, Vezzoli A, Mrakic-Sposta S, Malnati M, Beretta A, Accinni R. Antioxidant Activity with Increased Endogenous Levels of Vitamin C, E and A Following Dietary Supplementation with a Combination of Glutathione and Resveratrol Precursors. Nutrients 2020; 12:nu12113224. [PMID: 33105552 PMCID: PMC7690269 DOI: 10.3390/nu12113224] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/18/2020] [Accepted: 10/20/2020] [Indexed: 01/13/2023] Open
Abstract
The effects of two different dietary supplements on the redox status of healthy human participants were evaluated. The first supplement (GluS, Glutathione Synthesis) contains the precursors for the endogenous synthesis of glutathione and the second (GluReS, Glutathione and Resveratrol Synthesis) contains in addition polydatin, a precursor of resveratrol. To assess the influence of GluS and GluReS on the redox status, ten thiol species and three vitamins were measured before (t0) and after 8 weeks (t1) of dietary supplementation. An inflammatory marker, neopterin, was also assessed at the same time points. Both supplements were highly effective in improving the redox status by significantly increasing the reduced-glutathione (GSH) content and other reduced thiol species while significantly decreasing the oxidized species. The positive outcome of the redox status was most significant in the GluRes treatment group which also experienced a significant reduction in neopterin levels. Of note, the endogenous levels of vitamins C, E and A were significantly increased in both treatment groups, with best results in the GluReS group. While both dietary supplements significantly contributed to recognized antioxidant and anti-inflammatory outcomes, the effects of GluReS, the combination of glutathione and resveratrol precursors, were more pronounced. Thus, dietary supplementation with GluReS may represent a valuable strategy for maintaining a competent immune status and a healthy lifespan.
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Affiliation(s)
- Priscilla Biswas
- SoLongevity Research, 20121 Milan, Italy; (A.B.); (R.A.)
- Correspondence: ; Tel.: +39-02-26434903
| | - Cinzia Dellanoce
- Institute of Clinical Physiology, National Council of Research (IFC-CNR), ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy; (C.D.); (A.V.); (S.M.-S.)
| | - Alessandra Vezzoli
- Institute of Clinical Physiology, National Council of Research (IFC-CNR), ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy; (C.D.); (A.V.); (S.M.-S.)
| | - Simona Mrakic-Sposta
- Institute of Clinical Physiology, National Council of Research (IFC-CNR), ASST Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy; (C.D.); (A.V.); (S.M.-S.)
| | - Mauro Malnati
- Unit of Viral Evolution and Transmission, IRCCS Ospedale San Raffaele, 20132 Milan, Italy;
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12
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Affiliation(s)
- Iain Scott
- Cardiology Division, Department of Medicine, University of Pittsburgh, PA (I.S., M.N.S.)
- Cardiovascular Branch, National Heart, Lung and Blood Institute, NIH, Bethesda, MD (I.S., M.N.S.)
| | - Michael N Sack
- Cardiology Division, Department of Medicine, University of Pittsburgh, PA (I.S., M.N.S.)
- Cardiovascular Branch, National Heart, Lung and Blood Institute, NIH, Bethesda, MD (I.S., M.N.S.)
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13
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Song SB, Park JS, Chung GJ, Lee IH, Hwang ES. Diverse therapeutic efficacies and more diverse mechanisms of nicotinamide. Metabolomics 2019; 15:137. [PMID: 31587111 DOI: 10.1007/s11306-019-1604-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/30/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Nicotinamide (NAM) is a form of vitamin B3 that, when administered at near-gram doses, has been shown or suggested to be therapeutically effective against many diseases and conditions. The target conditions are incredibly diverse ranging from skin disorders such as bullous pemphigoid to schizophrenia and depression and even AIDS. Similar diversity is expected for the underlying mechanisms. In a large portion of the conditions, NAM conversion to nicotinamide adenine dinucleotide (NAD+) may be a major factor in its efficacy. The augmentation of cellular NAD+ level not only modulates mitochondrial production of ATP and superoxide, but also activates many enzymes. Activated sirtuin proteins, a family of NAD+-dependent deacetylases, play important roles in many of NAM's effects such as an increase in mitochondrial quality and cell viability countering neuronal damages and metabolic diseases. Meanwhile, certain observed effects are mediated by NAM itself. However, our understanding on the mechanisms of NAM's effects is limited to those involving certain key proteins and may even be inaccurate in some proposed cases. AIM OF REVIEW This review details the conditions that NAM has been shown to or is expected to effectively treat in humans and animals and evaluates the proposed underlying molecular mechanisms, with the intention of promoting wider, safe therapeutic application of NAM. KEY SCIENTIFIC CONCEPTS OF REVIEW NAM, by itself or through altering metabolic balance of NAD+ and tryptophan, modulates mitochondrial function and activities of many molecules and thereby positively affects cell viability and metabolic functions. And, NAM administration appears to be quite safe with limited possibility of side effects which are related to NAM's metabolites.
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Affiliation(s)
- Seon Beom Song
- Department of Life Science, University of Seoul, Dongdaemun-gu, Seoulsiripdae-ro 163, Seoul, Republic of Korea
| | - Jin Sung Park
- Department of Life Science, University of Seoul, Dongdaemun-gu, Seoulsiripdae-ro 163, Seoul, Republic of Korea
| | - Gu June Chung
- Department of Life Science, University of Seoul, Dongdaemun-gu, Seoulsiripdae-ro 163, Seoul, Republic of Korea
| | - In Hye Lee
- Department of Life Science, Ewha Womans University, Ewhayeodae-gil 52, Seoul, Republic of Korea
| | - Eun Seong Hwang
- Department of Life Science, University of Seoul, Dongdaemun-gu, Seoulsiripdae-ro 163, Seoul, Republic of Korea.
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14
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Garva R, Thepmalee C, Yasamut U, Sudsaward S, Guazzelli A, Rajendran R, Tongmuang N, Khunchai S, Meysami P, Limjindaporn T, Yenchitsomanus PT, Mutti L, Krstic-Demonacos M, Demonacos C. Sirtuin Family Members Selectively Regulate Autophagy in Osteosarcoma and Mesothelioma Cells in Response to Cellular Stress. Front Oncol 2019; 9:949. [PMID: 31608237 PMCID: PMC6771295 DOI: 10.3389/fonc.2019.00949] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 09/09/2019] [Indexed: 12/20/2022] Open
Abstract
The class III NAD+ dependent deacetylases-sirtuins (SIRTs) link transcriptional regulation to DNA damage response and reactive oxygen species generation thereby modulating a wide range of cellular signaling pathways. Here, the contribution of SIRT1, SIRT3, and SIRT5 in the regulation of cellular fate through autophagy was investigated under diverse types of stress. The effects of sirtuins' silencing on cell survival and autophagy was followed in human osteosarcoma and mesothelioma cells exposed to DNA damage and oxidative stress. Our results suggest that the mitochondrial sirtuins SIRT3 and 5 are pro-proliferative under certain cellular stress conditions and this effect correlates with their role as positive regulators of autophagy. SIRT1 has more complex role which is cell type specific and can affect autophagy in both positive and negative ways. The mitochondrial sirtuins (SIRT3 and SIRT5) affect both early and late stages of autophagy, whereas SIRT1 acts mostly at later stages of the autophagic process. Investigation of potential crosstalk between SIRT1, SIRT3, and SIRT5 revealed several feedback loops and a significant role of SIRT5 in regulating SIRT3 and SIRT1. Results presented here support the notion that sirtuin family members play important as well as differential roles in the regulation of autophagy in osteosarcoma vs. mesothelioma cells exposed to DNA damage and oxidative stress, and this can be exploited in increasing the response of cancer cells to chemotherapy.
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Affiliation(s)
- Richa Garva
- Faculty of Biology Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Chutamas Thepmalee
- Division of Biochemistry, School of Medical Sciences, University of Phayao, Phayao, Thailand.,Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Umpa Yasamut
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Sangkab Sudsaward
- Department of Anatomy, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Alice Guazzelli
- School of Environment and Life Sciences, University of Salford, Salford, United Kingdom
| | - Ramkumar Rajendran
- Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Nopprarat Tongmuang
- Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sasiprapa Khunchai
- Department of Anatomy, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Parisa Meysami
- School of Environment and Life Sciences, University of Salford, Salford, United Kingdom
| | - Thawornchai Limjindaporn
- Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.,Department of Anatomy, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pa-Thai Yenchitsomanus
- Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Luciano Mutti
- Center for Biotechnology, Sbarro Institute for Cancer Research and Molecular Medicine, College of Science and Technology, Temple University, Philadelphia, PA, United States
| | | | - Constantinos Demonacos
- Faculty of Biology Medicine and Health, University of Manchester, Manchester, United Kingdom
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16
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Sonkar R, Kay MK, Choudhury M. PFOS Modulates Interactive Epigenetic Regulation in First-Trimester Human Trophoblast Cell Line HTR-8/SV neo. Chem Res Toxicol 2019; 32:2016-2027. [PMID: 31508952 DOI: 10.1021/acs.chemrestox.9b00198] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Organic compounds have been linked to adverse pregnancy complications. Perfluorooctanesulfonic acid (PFOS), a man-made fluorosurfactant and global pollutant, has been shown to induce oxidative stress in various cell types. Oxidative stress plays a key role in leading several placental diseases including preeclampsia (PE), gestational diabetes, spontaneous abortion, preterm labor, and intrauterine growth restriction. Recently, epigenetic regulation such as histone modifications, DNA methylation, and microRNAs (miRNAs), are shown to be associated with oxidative stress as well as pregnancy complications such as PE. However, whether PFOS exerts its detrimental effects in the placenta through epigenetics remains to be unveiled. Therefore, we aimed to investigate the effect of PFOS-induced reactive oxygen species (ROS) generation in first trimester human trophoblast cell line (HTR-8/SVneo) and whether epigenetic regulation is involved in this process. When treated with a range of PFOS doses at 24 and 48 h, even at 10 μM, it significantly increased the ROS production and decreased gene and protein expression, respectively, of the DNA methyltransferases DNMT1 (p < 0.001; p < 0.05), DNMT3A (p < 0.001; p < 0.05), and DNMT3B (p < 0.01; p < 0.01) and the sirtuins, for example, SIRT1 (p < 0.001; p < 0.001) and SIRT3 (p < 0.001; p < 0.05), while reducing global DNA methylation (p < 0.01) and increasing protein lysine acetylation (p < 0.001) as compared to vehicle controls. Interestingly, PFOS (10 μM) significantly increased miR29-b (p < 0.01), which has been previously reported to be associated with PE. The observed epigenetic effects were shown to be dependent on the expression of miR-29b, as knockdown of miR-29b significantly alters the gene and protein expression of DNMT1, DNMT3A, DNMT3B, SIRT1, and SIRT3 and ROS production as well as global DNA methylation and protein acetylation. This study provides for the first time a novel insight into PFOS-induced ROS generation via regulation of sets of the interactive epigenetic circuit in the placenta, which may lead to pregnancy complications.
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Affiliation(s)
- Ravi Sonkar
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy , Texas A&M Health Science Center , 312 REYN, MS 1114 , College Station , Texas 77843 , United States
| | - Matthew K Kay
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy , Texas A&M Health Science Center , 312 REYN, MS 1114 , College Station , Texas 77843 , United States
| | - Mahua Choudhury
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy , Texas A&M Health Science Center , 312 REYN, MS 1114 , College Station , Texas 77843 , United States
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17
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Age associated non-linear regulation of redox homeostasis in the anucleate platelet: Implications for CVD risk patients. EBioMedicine 2019; 44:28-40. [PMID: 31130473 PMCID: PMC6604369 DOI: 10.1016/j.ebiom.2019.05.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/09/2019] [Accepted: 05/09/2019] [Indexed: 12/31/2022] Open
Abstract
Background Aging is a complex physiological phenomenon, intricately associated with cardiovascular pathologies, where platelets play a central pathophysiological role. Although antiplatelets are commonly employed to prevent and treat major adverse cardiovascular events, aging associated intraplatelet changes remain largely unexplored. Methods Platelets were studied in high cardiovascular risk patients (aged 40–100 years) comparing them to younger healthy subjects. This was followed by cross sectional and longitudinal mice studies. Flow cytometry, biochemical and molecular assays were used to study platelets comprehensively. Findings CVD Patients were categorized in the age groups 40–59, 60–79, and 80–100 years. Progressive decline in platelet health was observed in the 40–79 years age cohort, marked by increase in oxidative stress, hyperactivation and apoptotic markers. Paradoxically, this was reversed in patients aged above 79 years and the improved platelet phenotype was associated with lower oxidative damage. The platelets from the very old (80–100 year) group were found to be preloaded with increased antioxidants, which also contributed to higher resistance against induced redox insults. Cross sectional mouse studies excluded the effect of comorbidities and medications. Longitudinal mouse studies implicate an adaptive increase in antioxidant levels as the mechanism. Interpretation We report a novel age associated, non-linear redox regulation in platelets in both humans and mice. In advanced age, there occurs an adaptive increase in platelet antioxidants, reducing the intracellular ROS and leading to a healthier platelet phenotype. Clinically, our results advocate the use of less aggressive antiplatelet therapies for CVD in the elderly population. Fund Study funded by NIH-NHLBI, RO1-HL122815 and RO1-HL115247.
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Liu GZ, Zhang S, Li YY, Liu YW, Zhang Y, Zhao XB, Yuan Y, Zhang JW, Khannanova Z, Li Y. Aldosterone stimulation mediates cardiac metabolism remodeling via Sirt1/AMPK signaling in canine model. Naunyn Schmiedebergs Arch Pharmacol 2019; 392:851-863. [PMID: 30852656 DOI: 10.1007/s00210-019-01641-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/28/2019] [Indexed: 11/29/2022]
Abstract
Aldosterone (Aldo), a pivotal hormone that is ubiquitously expressed in systemic tissues of mammals, is a crucial factor in the pathogenesis of cardiac disease. Accumulating evidence suggests that disturbances in cell energy metabolism are involved in increasing aldosterone levels. However, the precise mechanism underlying the impact of cardiac metabolic remodeling underlying aldosterone stimulation remains limited. In this work, we evaluated the underlying effect of aldosterone on regulating cardiac metabolism remodeling in a canine model. Fifteen beagle dogs were divided into a control group (n = 5), Aldo group (n = 5), and a group treated with spironolactone (SP), a mineralocorticoid receptor antagonist (n = 5), for 4 weeks. Blood pressure, electrocardiogram and respiratory parameters, H&E, Masson staining, ultrastructural changes, the adenosine triphosphate (ATP) and free fatty acid (FFA) levels of ventricular tissues, the level of mRNA, and the protein expression of key metabolic factors and regulators were assessed. The Sirt1/AMPK signaling pathway was significantly inhibited in the canine model of aldosterone stimulation, resulting in a reduction of the key downstream metabolic factors involved in glucose and fatty acid oxidation. The dysregulation of expression of key factors in glycogen metabolism led to glycogen deposition, an increase in FFA levels, a reduction in ATP levels, apoptosis, inflammatory cell infiltration, and mitochondrial damage in the ventricular myocardium. These effects were significantly restored by spironolactone. Aldosterone stimulation induced cardiac metabolic remodeling in ventricular cardiomyocytes possibly through the Sirt1/AMPK signaling pathway, implying that this pathway may provide a novel therapeutic target for cardiac metabolic remodeling.
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Affiliation(s)
- Guang-Zhong Liu
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China
| | - Song Zhang
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China
| | - Yan-Yan Li
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China
| | - Yong-Wu Liu
- Centre for Drug Safety Evaluation, Heilongjiang University of Chinese Medicine, Harbin, 150001, Heilongjiang Province, China
| | - Yun Zhang
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China
| | - Xin-Bo Zhao
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China
| | - Yue Yuan
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China
| | - Jia-Wei Zhang
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China
| | - Zulfiia Khannanova
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China
| | - Yue Li
- Department of Cardiology, the First Affiliated Hospital, Harbin Medical University, Youzheng Street 23#, Nangang District, Harbin, 150001, Heilongjiang Province, China. .,Key Laboratory of Cardiac Diseases and Heart Failure, Harbin Medical University, Harbin, 150001, Heilongjiang Province, China. .,Institute of Metabolic Disease, Heilongjiang Academy of Medical Science, Harbin, 150001, Heilongjiang Province, China.
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19
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Hafez YM, El-Deeb OS, Atef MM. The emerging role of the epigenetic enzyme Sirtuin-1 and high mobility group Box 1 in patients with diabetic foot ulceration. Diabetes Metab Syndr 2018; 12:1065-1070. [PMID: 30168428 DOI: 10.1016/j.dsx.2018.06.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 06/29/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Diabetic foot ulceration (DFU) is a serious diabetic complication that can progress to amputation and since SIRT1 regulates glucose metabolism, inflammation, and oxidative stress which are the major contributors in diabetic complications, So we aimed to discuss its role as an epigenetic biomarker in DFU and highlight its link to oxidative stress and inflammatory cytokines. METHOD 60 DM patients were enrolled in the study, 30 without DFU and 30 with DFU in addition to 15 healthy subjects (control group). SIRT1 mRNA relative gene expression was assessed. Catalase activity, advanced glycation end products (AGEs), tumor necrosis factor alpha (TNFα), interleukin 6 (IL-6) and High mobility group box1 (HMGB1) levels were measured. DNA fragmentation was also performed. RESULT SIRT1 expression and catalase activity were significantly decreased in diabetic patients compared to control group with the lowest levels in DFU patients, TNFα, IL-6, HMGB 1 and AGEs levels were significantly higher in the diabetic patients compared to control group with the highest levels in DFU patients. DNA fragmentation was more profound in DFU patients. CONCLUSION The study revealed that SIRT1 mRNA expression can be considered as a novel biomarker in DFU being a major player involved in its pathogenesis.
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Affiliation(s)
- Yasser Mostafa Hafez
- Lecturer of Internal Medicine, Internal Medicine Department, Faculty of Medicine, Tanta University, El Geesh street, Tanta, Egypt
| | - Omnia Safwat El-Deeb
- Lecturers of Medical Biochemistry, Medical Biochemistry Department, Faculty of Medicine, Tanta University, El Geesh street, Tanta, Egypt
| | - Marwa Mohamed Atef
- Lecturers of Medical Biochemistry, Medical Biochemistry Department, Faculty of Medicine, Tanta University, El Geesh street, Tanta, Egypt.
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20
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Sack MN. Mitochondrial fidelity and metabolic agility control immune cell fate and function. J Clin Invest 2018; 128:3651-3661. [PMID: 30059015 DOI: 10.1172/jci120845] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Remodeling of mitochondrial metabolism plays an important role in regulating immune cell fate, proliferation, and activity. Furthermore, given their bacterial ancestry, disruption in mitochondrial fidelity leading to extravasation of their content initiates and amplifies innate immune surveillance with a myriad of physiologic and pathologic consequences. Investigations into the role of mitochondria in the immune system have come to the fore, and appreciation of mitochondrial function and quality control in immune regulation has enhanced our understanding of disease pathogenesis and identified new targets for immune modulation. This mitochondria-centered Review focuses on the role of mitochondrial metabolism and fidelity, as well as the role of the mitochondria as a structural platform, for the control of immune cell polarity, activation, and signaling. Mitochondria-linked disease and mitochondrially targeted therapeutic strategies to manage these conditions are also discussed.
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Giorgi C, Marchi S, Simoes IC, Ren Z, Morciano G, Perrone M, Patalas-Krawczyk P, Borchard S, Jȩdrak P, Pierzynowska K, Szymański J, Wang DQ, Portincasa P, Wȩgrzyn G, Zischka H, Dobrzyn P, Bonora M, Duszynski J, Rimessi A, Karkucinska-Wieckowska A, Dobrzyn A, Szabadkai G, Zavan B, Oliveira PJ, Sardao VA, Pinton P, Wieckowski MR. Mitochondria and Reactive Oxygen Species in Aging and Age-Related Diseases. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2018; 340:209-344. [PMID: 30072092 PMCID: PMC8127332 DOI: 10.1016/bs.ircmb.2018.05.006] [Citation(s) in RCA: 195] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Aging has been linked to several degenerative processes that, through the accumulation of molecular and cellular damage, can progressively lead to cell dysfunction and organ failure. Human aging is linked with a higher risk for individuals to develop cancer, neurodegenerative, cardiovascular, and metabolic disorders. The understanding of the molecular basis of aging and associated diseases has been one major challenge of scientific research over the last decades. Mitochondria, the center of oxidative metabolism and principal site of reactive oxygen species (ROS) production, are crucial both in health and in pathogenesis of many diseases. Redox signaling is important for the modulation of cell functions and several studies indicate a dual role for ROS in cell physiology. In fact, high concentrations of ROS are pathogenic and can cause severe damage to cell and organelle membranes, DNA, and proteins. On the other hand, moderate amounts of ROS are essential for the maintenance of several biological processes, including gene expression. In this review, we provide an update regarding the key roles of ROS-mitochondria cross talk in different fundamental physiological or pathological situations accompanying aging and highlighting that mitochondrial ROS may be a decisive target in clinical practice.
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Affiliation(s)
- Carlotta Giorgi
- Department of Morphology Surgery and Experimental Medicine, Section of Pathology Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Saverio Marchi
- Department of Morphology Surgery and Experimental Medicine, Section of Pathology Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Ines C.M. Simoes
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Ziyu Ren
- Department of Cell and Developmental Biology, Consortium for Mitochondrial Research, University College London, London, United Kingdom
| | - Giampaolo Morciano
- Department of Morphology Surgery and Experimental Medicine, Section of Pathology Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
- Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Ravenna, Italy
- Maria Pia Hospital, GVM Care & Research, Torino, Italy
| | - Mariasole Perrone
- Department of Morphology Surgery and Experimental Medicine, Section of Pathology Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Paulina Patalas-Krawczyk
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Sabine Borchard
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Paulina Jȩdrak
- Department of Molecular Biology, University of Gdańsk, Gdańsk, Poland
| | | | - Jȩdrzej Szymański
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - David Q. Wang
- Department of Medicine, Division of Gastroenterology and Liver Diseases, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Piero Portincasa
- Clinica Medica “A. Murri”, Dept. of Biomedical Sciences & Human Oncology, University of Bari "Aldo Moro" Medical School, Bari, Italy
| | - Grzegorz Wȩgrzyn
- Department of Molecular Biology, University of Gdańsk, Gdańsk, Poland
| | - Hans Zischka
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, Munich, Germany
| | - Pawel Dobrzyn
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Massimo Bonora
- Departments of Cell Biology and Gottesman Institute for Stem Cell & Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Jerzy Duszynski
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Alessandro Rimessi
- Department of Morphology Surgery and Experimental Medicine, Section of Pathology Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | | | | | - Gyorgy Szabadkai
- Department of Cell and Developmental Biology, Consortium for Mitochondrial Research, University College London, London, United Kingdom
- The Francis Crick Institute, London, United Kingdom
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Barbara Zavan
- Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Ravenna, Italy
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Paulo J. Oliveira
- CNC - Center for Neuroscience and Cell Biology, UC-Biotech, Biocant Park, University of Coimbra, Cantanhede, Portugal
| | - Vilma A. Sardao
- CNC - Center for Neuroscience and Cell Biology, UC-Biotech, Biocant Park, University of Coimbra, Cantanhede, Portugal
| | - Paolo Pinton
- Department of Morphology Surgery and Experimental Medicine, Section of Pathology Oncology and Experimental Biology, Interdisciplinary Center for the Study of Inflammation (ICSI), Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
- Cecilia Hospital, GVM Care & Research, 48033 Cotignola, Ravenna, Italy
| | - Mariusz R. Wieckowski
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
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Scott I, Wang L, Wu K, Thapa D, Sack MN. GCN5L1/BLOS1 Links Acetylation, Organelle Remodeling, and Metabolism. Trends Cell Biol 2018; 28:346-355. [PMID: 29477615 PMCID: PMC5912981 DOI: 10.1016/j.tcb.2018.01.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/17/2018] [Accepted: 01/30/2018] [Indexed: 12/17/2022]
Abstract
General control of amino acid synthesis 5 (GCN5) like-1 (GCN5L1) was identified as a novel gene with sequence homology to the histone acetyltransferase Gcn5. Subsequent protein-interaction studies identified GCN5L1 as a subunit of the multiprotein lysosome biogenesis complex, resulting in an alternative designation as biogenesis of lysosome-related organelle complex 1 subunit 1 (BLOS1 or BLOC1S1). Despite the distinct nomenclatures, GCN5L1/BLOS1 has been shown to play crucial roles in mitochondria, endosomes, lysosomes, and synaptic vesicle precursors (SVPs). GCN5L1/BLOS1 controls mitochondrial protein acetylation, modulates metabolic pathways, and orchestrates retrograde mitochondria-to-nucleus signaling. It also contributes to endosome-lysosome and vesicle trafficking and to endolysosomal function. Here we discuss the intracellular roles of GCN5L1/BLOS1 in the hope of linking mitochondria-centric effects to cytosolic vesicle biology.
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Affiliation(s)
- Iain Scott
- Cardiology Division, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA
| | - Lingdi Wang
- Cardiovascular Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD 20892, USA
| | - Kaiyuan Wu
- Cardiovascular Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD 20892, USA
| | - Dharendra Thapa
- Cardiology Division, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA
| | - Michael N Sack
- Cardiovascular Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD 20892, USA.
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Singh CK, Chhabra G, Ndiaye MA, Garcia-Peterson LM, Mack NJ, Ahmad N. The Role of Sirtuins in Antioxidant and Redox Signaling. Antioxid Redox Signal 2018; 28:643-661. [PMID: 28891317 PMCID: PMC5824489 DOI: 10.1089/ars.2017.7290] [Citation(s) in RCA: 454] [Impact Index Per Article: 75.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
SIGNIFICANCE Antioxidant and redox signaling (ARS) events are regulated by critical molecules that modulate antioxidants, reactive oxygen species (ROS) or reactive nitrogen species (RNS), and/or oxidative stress within the cell. Imbalances in these molecules can disturb cellular functions to become pathogenic. Sirtuins serve as important regulators of ARS in cells. Recent Advances: Sirtuins (SIRTs 1-7) are a family of nicotinamide adenine dinucleotide (NAD)-dependent histone deacetylases with the ability to deacetylate histone and nonhistone targets. Recent studies show that sirtuins modulate the regulation of a variety of cellular processes associated with ARS. SIRT1, SIRT3, and SIRT5 protect the cell from ROS, and SIRT2, SIRT6, and SIRT7 modulate key oxidative stress genes and mechanisms. Interestingly, SIRT4 has been shown to induce ROS production and has antioxidative roles as well. CRITICAL ISSUES A complete understanding of the roles of sirtuins in redox homeostasis of the cell is very important to understand the normal functioning as well as pathological manifestations. In this review, we have provided a critical discussion on the role of sirtuins in the regulation of ARS. We have also discussed mechanistic interactions among different sirtuins. Indeed, a complete understanding of sirtuin biology could be critical at multiple fronts. FUTURE DIRECTIONS Sirtuins are emerging to be important in normal mammalian physiology and in a variety of oxidative stress-mediated pathological situations. Studies are needed to dissect the mechanisms of sirtuins in maintaining redox homeostasis. Efforts are also required to assess the targetability of sirtuins in the management of redox-regulated diseases. Antioxid. Redox Signal. 28, 643-661.
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Affiliation(s)
- Chandra K Singh
- Department of Dermatology, University of Wisconsin , Madison, Wisconsin
| | - Gagan Chhabra
- Department of Dermatology, University of Wisconsin , Madison, Wisconsin
| | - Mary Ann Ndiaye
- Department of Dermatology, University of Wisconsin , Madison, Wisconsin
| | | | - Nicholas J Mack
- Department of Dermatology, University of Wisconsin , Madison, Wisconsin
| | - Nihal Ahmad
- Department of Dermatology, University of Wisconsin , Madison, Wisconsin
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Cha BK, Kim YS, Hwang KE, Cho KH, Oh SH, Kim BR, Jun HY, Yoon KH, Jeong ET, Kim HR. Celecoxib and sulindac inhibit TGF-β1-induced epithelial-mesenchymal transition and suppress lung cancer migration and invasion via downregulation of sirtuin 1. Oncotarget 2018; 7:57213-57227. [PMID: 27528025 PMCID: PMC5302984 DOI: 10.18632/oncotarget.11127] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 07/26/2016] [Indexed: 12/19/2022] Open
Abstract
The non-steroidal anti-inflammatory drugs (NSAIDs) celecoxib and sulindac have been reported to suppress lung cancer migration and invasion. The class III deacetylase sirtuin 1 (SIRT1) possesses both pro- and anticarcinogenic properties. However, its role in inhibition of lung cancer cell epithelial-mesenchymal transition (EMT) by NSAIDs is not clearly known. We attempted to investigate the potential use of NSAIDs as inhibitors of TGF-β1-induced EMT in A549 cells, and the underlying mechanisms of suppression of lung cancer migration and invasion by celecoxib and sulindac. We demonstrated that celecoxib and sulindac were effective in preventing TGF-β1-induced EMT, as indicated by upregulation of the epithelial marker, E-cadherin, and downregulation of mesenchymal markers and transcription factors. Moreover, celecoxib and sulindac could inhibit TGF-β1-enhanced migration and invasion of A549 cells. SIRT1 downregulation enhanced the reversal of TGF-β1-induced EMT by celecoxib or sulindac. In contrast, SIRT1 upregulation promoted TGF-β1-induced EMT. Taken together, these results indicate that celecoxib and sulindac can inhibit TGF-β1-induced EMT and suppress lung cancer cell migration and invasion via downregulation of SIRT1. Our findings implicate overexpressed SIRT1 as a potential therapeutic target to reverse TGF-β1-induced EMT and to prevent lung cancer cell migration and invasion.
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Affiliation(s)
- Byong-Ki Cha
- Department of Thoracic and Cardiovascular Surgery, Chonbuk National University Medical School, Jeonbuk, Korea
| | - Young-Suk Kim
- Departments of Internal Medicine, Institute of Wonkwang Medical Science, Wonkwang University, School of Medicine 344-2 shinyong-dong Iksan, Jeonbuk, Korea
| | - Ki-Eun Hwang
- Departments of Internal Medicine, Institute of Wonkwang Medical Science, Wonkwang University, School of Medicine 344-2 shinyong-dong Iksan, Jeonbuk, Korea
| | - Kyung-Hwa Cho
- Departments of Internal Medicine, Institute of Wonkwang Medical Science, Wonkwang University, School of Medicine 344-2 shinyong-dong Iksan, Jeonbuk, Korea
| | - Seon-Hee Oh
- Department of Premedicine, School of Medicine, Chosun University, Gwangju, Korea
| | - Byoung-Ryun Kim
- Department of Obstetrics & Gynecology, Wonkwang University, School of Medicine, Iksan, Jeonbuk, Korea
| | - Hong-Young Jun
- Imaging Science Research Center, Wonkwang University, School of Medicine, Iksan, Jeonbuk, Korea
| | - Kwon-Ha Yoon
- Departments of Radiology, Wonkwang University, School of Medicine, Iksan, Jeonbuk, Korea
| | - Eun-Taik Jeong
- Departments of Internal Medicine, Institute of Wonkwang Medical Science, Wonkwang University, School of Medicine 344-2 shinyong-dong Iksan, Jeonbuk, Korea
| | - Hak-Ryul Kim
- Departments of Internal Medicine, Institute of Wonkwang Medical Science, Wonkwang University, School of Medicine 344-2 shinyong-dong Iksan, Jeonbuk, Korea
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Distinct effects of SIRT1 in cancer and stromal cells on tumor promotion. Oncotarget 2018; 7:23975-87. [PMID: 26992208 PMCID: PMC5029678 DOI: 10.18632/oncotarget.8073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Accepted: 02/28/2016] [Indexed: 12/21/2022] Open
Abstract
The lysyl deacetylase SIRT1 acts as a metabolic sensor in adjusting metabolic imbalance. To explore the role of SIRT1 in tumor-stroma interplay, we designed an in vivo tumor model using SIRT1-transgenic mice. B16F10 mouse melanoma grew more quickly in SIRT1-transgenic mice than in wild-type mice, whereas SIRT1-overexpressing one grew slowly in both mice. Of human tumors, SIRT1 expression in stromal fibroblasts was found to correlate with poor prognosis in ovarian cancer. B16F10 and human ovarian cancer (SKOV3 and SNU840) cells were more proliferative in co-culture with SIRT1-overexpressiong fibroblasts. In contrast, SIRT1 within cancer cells has a negative effect on cell proliferation. In conditioned media from SIRT1-overexpressing fibroblasts, matrix metalloproteinase-3 (MMP3) was identified in cytokine arrays to be secreted from fibroblasts SIRT1-dependently. Fibroblast-derived MMP3 stimulated cancer cell proliferation, and such a role of MMP3 was also demonstrated in cancer/fibroblast co-grafts. In conclusion, SIRT1 plays differential roles in cancer and stromal cells. SIRT1 in stromal cells promotes cancer growth by producing MMP3, whereas SIRT1 in cancer cells inhibits growth via an intracellular event. The present study provides a basis for setting new anticancer strategies targeting SIRT1.
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Role of Forkhead Box O (FOXO) transcription factor in aging and diseases. Gene 2018; 648:97-105. [PMID: 29428128 DOI: 10.1016/j.gene.2018.01.051] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 12/26/2017] [Accepted: 01/14/2018] [Indexed: 12/21/2022]
Abstract
Fork head box O (FOXO) transcription factor is a key player in an evolutionarily conserved pathway. The mammalian FOXO family consists of FOXO1, 3, 4 and 6, are highly similar in their structure, function and regulation. To maintain optimum body function, the organisms have developed complex mechanisms for homeostasis. Importantly, it is well known that when these mechanisms dysregulate it results in the development of age-related disease. FOXO proteins are involved in a diverse cellular function and also have clinical significance including cell cycle arrest, cell differentiation, tumour suppression, DNA repair, longevity, diabetic complications, immunity, wound healing, regulation of metabolism and thus treatment of several types of diseases. By the combinations of post-translational modifications FOXO's serve as a 'molecular code' to sense external stimuli and recruit it as to specific regions of the genome and provide an integrated cellular response to changing physiological conditions. Akt/Protein kinase B a signaling pathway as a main regulator of FOXO to perform a diverse function in organisms. The present review summarizes the molecular and clinical aspects of FOXO transcription factor. And also elaborate the interaction of FOXO with the nucleosome remodelling complex to target genes, which is essential to cellular homeostasis.
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Perović A, Sobočanec S, Dabelić S, Balog T, Dumić J. Effect of scuba diving on the oxidant/antioxidant status, SIRT1 and SIRT3 expression in recreational divers after a winter nondive period. Free Radic Res 2018; 52:188-197. [PMID: 29334806 DOI: 10.1080/10715762.2017.1422211] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The aim of this study was to examine the effects of scuba diving on oxidative damage markers in erythrocytes and plasma, antioxidant system in peripheral blood mononuclear cells (PBMCs), as well as sirtuin 1 (SIRT1) and sirtuin 3 (SIRT3) gene expressions in recreational divers after a winter nondive period (at least 5 months). For that purpose, 17 male recreational divers performed an immersion at a depth of 30 m for 30 min. Blood samples were collected immediately before and after diving, 3 and 6 h after diving. Erythrocyte lipid peroxidation measured by thiobarbituric-reactive substances (TBARS) method was significantly increased immediately after diving, but returned to the baseline 6 h after diving, while no significant change was found for plasma TBARS and protein carbonyl derivates in both plasma and erythrocytes. Diving-induced catalase (CAT), superoxide dismutase 2 (SOD2), and consequently total superoxide dismutase (SOD) activities in the PBMC samples (significantly increased immediately after diving, reached the maximum activities 3 h after diving, while 6 h after diving only CAT activity remained significantly increased). No significant change was observed for SOD1 activity and gene expression, as well as SOD2 expression, while CAT and SIRT1 expressions were slightly decreased immediately after diving and 3 h after diving. Interestingly, SIRT3 expression was significantly increased 6 h after diving. In conclusion, after the first dive to 30 m after a nondive season, activation of antioxidant defence was not sufficient to prevent oxidative damage, while SIRT3 upregulation could be a step towards an adaptive response to the diving.
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Affiliation(s)
- Antonija Perović
- a Department of Laboratory Diagnostics , Dubrovnik General Hospital , Dubrovnik , Croatia
| | - Sandra Sobočanec
- b Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Sanja Dabelić
- c Department of Biochemistry and Molecular Biology , University of Zagreb , Zagreb , Croatia
| | - Tihomir Balog
- b Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Jerka Dumić
- c Department of Biochemistry and Molecular Biology , University of Zagreb , Zagreb , Croatia
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Dhillon RS, Richards JG. Hypoxia induces selective modifications to the acetylome in the brain of zebrafish (Danio rerio). Comp Biochem Physiol B Biochem Mol Biol 2018; 224:79-87. [PMID: 29309913 DOI: 10.1016/j.cbpb.2017.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 12/18/2017] [Accepted: 12/20/2017] [Indexed: 10/18/2022]
Abstract
Reversible protein acetylation is an important regulatory mechanism for modulating protein function. The cellular protein acetylome is in large part dictated by the cellular redox balance, and in particular [NAD+]. While the relationship between hypoxia, redox balance, energy charge and resulting mitochondrial dysfunction has been examined in the context of hypoxia-linked pathologies, little is known about the direct effects of decreases in environmental oxygen on reversible lysine acetylation, and the resulting modifications to mitochondrial metabolism. To address this knowledge gap, we exposed zebrafish (Danio rerio) to 16 h of hypoxia (2.21 kPa) and quantified acetylation levels of 1220 proteins using whole-cell proteomics in samples of brain taken from normoxic and hypoxic zebrafish. In addition, we examined the effects of hypoxia on cytoplasmic and mitochondrial redox status, whole-cell energetics, the activity of the mitochondrial NAD+-dependent deacetylase SIRT3, and electron transport chain complex activities to determine if there is an association between hypoxia-induced metabolic disturbances, protein acetylation, and mitochondrial function. Our results (1) reveal several key changes in the acetylation status of proteins in the brain, primarily within the mitochondria; (2) show significant fluctuations in cytoplasmic and mitochondrial redox status within the brain during hypoxia exposure; and (3) provide evidence that lysine acetylation may be related to large changes in electron transport and ATP-synthase complex activities and adenylate status in zebrafish exposed to hypoxic stress. Together, these data provide new insights into the role of protein modifications in mitochondrial metabolism during hypoxia.
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Affiliation(s)
- Rashpal S Dhillon
- Wisconsin Institute for Discovery, Department of Biomolecular Chemistry, University of Wisconsin-Madison, 330 North Orchard Street, Madison, WI 53715, USA; Department of Zoology, The University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada.
| | - Jeffrey G Richards
- Department of Zoology, The University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
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Huang K, Gao X, Wei W. The crosstalk between Sirt1 and Keap1/Nrf2/ARE anti-oxidative pathway forms a positive feedback loop to inhibit FN and TGF-β1 expressions in rat glomerular mesangial cells. Exp Cell Res 2017; 361:63-72. [DOI: 10.1016/j.yexcr.2017.09.042] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 09/27/2017] [Accepted: 09/30/2017] [Indexed: 01/01/2023]
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Beckervordersandforth R. Mitochondrial Metabolism-Mediated Regulation of Adult Neurogenesis. Brain Plast 2017; 3:73-87. [PMID: 29765861 PMCID: PMC5928529 DOI: 10.3233/bpl-170044] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The life-long generation of new neurons from radial glia-like neural stem cells (NSCs) is achieved through a stereotypic developmental sequence that requires precise regulatory mechanisms to prevent exhaustion or uncontrolled growth of the stem cell pool. Cellular metabolism is the new kid on the block of adult neurogenesis research and the identity of stage-specific metabolic programs and their impact on neurogenesis turns out to be an emerging research topic in the field. Mitochondrial metabolism is best known for energy production but it contains a great deal more. Mitochondria are key players in a variety of cellular processes including ATP synthesis through functional coupling of the electron transport chain and oxidative phosphorylation, recycling of hydrogen carriers, biosynthesis of cellular building blocks, and generation of reactive oxygen species that can modulate signaling pathways in a redox-dependent fashion. In this review, I will discuss recent findings describing stage-specific modulations of mitochondrial metabolism within the adult NSC lineage, emphasizing its importance for NSC self-renewal, proliferation of neural stem and progenitor cells (NSPCs), cell fate decisions, and differentiation and maturation of newborn neurons. I will furthermore summarize the important role of mitochondrial dysfunction in tissue regeneration and ageing, suggesting it as a potential therapeutic target for regenerative medicine practice.
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Affiliation(s)
- Ruth Beckervordersandforth
- Institute of Biochemistry, Emil Fischer Center, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany
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Metoprolol prevents chronic obstructive sleep apnea-induced atrial fibrillation by inhibiting structural, sympathetic nervous and metabolic remodeling of the atria. Sci Rep 2017; 7:14941. [PMID: 29097705 PMCID: PMC5668297 DOI: 10.1038/s41598-017-14960-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 05/04/2017] [Indexed: 11/30/2022] Open
Abstract
Chronic obstructive sleep apnea (OSA) may promote the development of atrial fibrillation (AF) by inducing atrial electrical and structural remodeling as well as autonomic nerve hyperinnervation. Here, we investigated the roles of metoprolol in regulation of atrial remodeling induced by chronic OSA. A canine model of chronic OSA was established by stopping the ventilator and closing the airway for 4 h/day every other day for 12 weeks, while metoprolol (5 mg·kg-1·day-1) was continuously administered. Using that model, we observed that increases in sympathetic sprouting and atrial structural remodeling were sharply inhibited by metoprolol. Moreover, metoprolol dramatically inhibited the impairment of atrial energy metabolism by activating the Sirt1-AMPK pathway. In vitro, metoprolol significantly activated the Sirt1-AMPK pathway in intermittent hypoxic and isoproterenol-treated HL-1 cells, and the effect was abolished by the coadministration of EX-527, an inhibitor of Sirt1 activation. In summary, metoprolol protects against chronic OSA-induced atrial remodeling. Our results suggest a new and feasible treatment strategy for AF induced by OSA.
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Traba J, Geiger SS, Kwarteng-Siaw M, Han K, Ra OH, Siegel RM, Gius D, Sack MN. Prolonged fasting suppresses mitochondrial NLRP3 inflammasome assembly and activation via SIRT3-mediated activation of superoxide dismutase 2. J Biol Chem 2017; 292:12153-12164. [PMID: 28584055 DOI: 10.1074/jbc.m117.791715] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 06/02/2017] [Indexed: 12/22/2022] Open
Abstract
Twenty-four hours of fasting is known to blunt activation of the human NLRP3 inflammasome. This effect might be mediated by SIRT3 activation, controlling mitochondrial reactive oxygen species. To characterize the molecular underpinnings of this fasting effect, we comparatively analyzed the NLRP3 inflammasome response to nutrient deprivation in wild-type and SIRT3 knock-out mice. Consistent with previous findings for human NLRP3, prolonged fasting blunted the inflammasome in wild-type mice but not in SIRT3 knock-out mice. In SIRT3 knock-out bone marrow-derived macrophages, NLRP3 activation promoted excess cytosolic extrusion of mitochondrial DNA along with increased reactive oxygen species and reduced superoxide dismutase 2 (SOD2) activity. Interestingly, the negative regulatory effect of SIRT3 on NLRP3 was not due to transcriptional control or priming of canonical inflammasome components but, rather, occurred via SIRT3-mediated deacetylation of mitochondrial SOD2, leading to SOD2 activation. We also found that siRNA knockdown of SIRT3 or SOD2 increased NLRP3 supercomplex formation and activation. Moreover, overexpression of wild-type and constitutively active SOD2 similarly blunted inflammasome assembly and activation, effects that were abrogated by acetylation mimic-modified SOD2. Finally, in vivo administration of lipopolysaccharide increased liver injury and the levels of peritoneal macrophage cytokines, including IL-1β, in SIRT3 KO mice. These results support the emerging concept that enhancing mitochondrial resilience against damage-associated molecular patterns may play a pivotal role in preventing inflammation and that the anti-inflammatory effect of fasting-mimetic diets may be mediated, in part, through SIRT3-directed blunting of NLRP3 inflammasome assembly and activation.
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Affiliation(s)
- Javier Traba
- Cardiovascular and Pulmonary Branch, NHLBI, National Institutes of Health, Bethesda, Maryland 20892
| | - Sarah S Geiger
- Autoimmunity Branch, NIAMS, National Institutes of Health, Bethesda, Maryland 20892
| | - Miriam Kwarteng-Siaw
- Cardiovascular and Pulmonary Branch, NHLBI, National Institutes of Health, Bethesda, Maryland 20892
| | - Kim Han
- Cardiovascular and Pulmonary Branch, NHLBI, National Institutes of Health, Bethesda, Maryland 20892
| | - One Hyuk Ra
- Cardiovascular and Pulmonary Branch, NHLBI, National Institutes of Health, Bethesda, Maryland 20892
| | - Richard M Siegel
- Autoimmunity Branch, NIAMS, National Institutes of Health, Bethesda, Maryland 20892
| | - David Gius
- Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611
| | - Michael N Sack
- Cardiovascular and Pulmonary Branch, NHLBI, National Institutes of Health, Bethesda, Maryland 20892.
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Wang X, Meng L, Zhao L, Wang Z, Liu H, Liu G, Guan G. Resveratrol ameliorates hyperglycemia-induced renal tubular oxidative stress damage via modulating the SIRT1/FOXO3a pathway. Diabetes Res Clin Pract 2017; 126:172-181. [PMID: 28258028 DOI: 10.1016/j.diabres.2016.12.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 11/12/2016] [Accepted: 12/08/2016] [Indexed: 10/20/2022]
Abstract
AIMS Oxidative stress plays an important role in the development and progression of diabetic nephropathy (DN). We aimed to investigate if resveratrol (RSV) could ameliorate hyperglycemia-induced oxidative stress in renal tubules via modulating the SIRT1/FOXO3a pathway. METHODS The effects of RSV on diabetes rats were assessed by periodic acid-Schiff, Masson staining, immunohistochemistry, and western blot analyses. Additionally, oxidative indicators (such as catalase, superoxide dismutase, reactive oxygen species, and malondialdehyde), the deacetylase activity of SIRT1 and protein expressions of SIRT1, FOXO3a, and acetylated-FOXO3a were measured. These indicators were similarly evaluated in an in vitro study. Furthermore, the silencing of SIRT1 was used to confirm its role in the resistance to oxidative stress and the relationship between SIRT1 and FOXO3a in vitro. RESULTS After 16weeks of RSV treatment, the renal function and glomerulosclerosis of rats with DN was dramatically ameliorated. RSV treatment increased SIRT1 deacetylase activity, subsequently decreasing the expression of acetylated-FOXO3a and inhibiting the oxidative stress caused by hyperglycemia both in vivo and in vitro. The silencing of SIRT1 in HK-2 cells aggravated the high glucose-induced oxidative stress and overexpression of acetylated-FOXO3a; RSV treatment failed to protect against these effects. CONCLUSIONS RSV modulates the SIRT1/FOXO3a pathway by increasing SIRT1 deacetylase activity, subsequently ameliorating hyperglycemia-induced renal tubular oxidative stress damage. This mechanism provides the basis for a new approach to developing an effective DN treatment, which is of great clinical significance for reducing the morbidity and mortality associated with DN.
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Affiliation(s)
- Xueling Wang
- Nephrology Research Institute of Shandong University, The Second Hospital of Shandong University, Shandong University, Jinan, Shandong, China
| | - Linghang Meng
- Nephrology Research Institute of Shandong University, The Second Hospital of Shandong University, Shandong University, Jinan, Shandong, China
| | - Long Zhao
- Nephrology Research Institute of Shandong University, The Second Hospital of Shandong University, Shandong University, Jinan, Shandong, China
| | - Zengfu Wang
- Anesthesia Department, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Haiying Liu
- Nephrology Research Institute of Shandong University, The Second Hospital of Shandong University, Shandong University, Jinan, Shandong, China
| | - Gang Liu
- Nephrology Research Institute of Shandong University, The Second Hospital of Shandong University, Shandong University, Jinan, Shandong, China.
| | - Guangju Guan
- Nephrology Research Institute of Shandong University, The Second Hospital of Shandong University, Shandong University, Jinan, Shandong, China.
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Xia X, Qu B, Li YM, Yang LB, Fan KX, Zheng H, Huang HD, Gu JW, Kuang YQ, Ma Y. NFAT5 protects astrocytes against oxygen-glucose-serum deprivation/restoration damage via the SIRT1/Nrf2 pathway. J Mol Neurosci 2016; 61:96-104. [PMID: 27838821 DOI: 10.1007/s12031-016-0849-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 09/22/2016] [Indexed: 01/05/2023]
Abstract
Nuclear factor of activated T cells (NFAT) is a multifunctional cytokine family. NFAT5 was recently reported to be involved in many neuronal functions, but its specific function remains unclear. In this study, our aim is to investigate whether NFAT5 overexpression can protect astrocytes against oxygen-glucose-serum deprivation/restoration (OGSD/R) damage. In vivo, rats were subjected to ischemia-reperfusion injury, resulting in increased water content, infarct volume, and expression of NFAT5 protein in rat spinal cord. After primary culture for spinal cord astrocytes, the in vitro OGSD/R model was established. The results of the CCK8 assay and flow cytometry showed that, in the OGSD/R group, astrocyte cell viability was downregulated, but astrocyte apoptosis increased. Caspase 3 activity increased as well. Levels of NFAT5, as detected by real-time quantitative PCR and western blot, decreased under OGSD/R, as did SIRT1. Commercial kits for activity assays were used to show that OGSD/R inhibited SIRT1 activation but accelerated SOD activation after OGSD/R. Next, pcDNA-NFAT5 or NFAT5 siRNA was transfected into astrocytes. Overexpression of NFAT5 not only promoted the survival of the astrocytes and SIRT1 activation under OGSD/R but also inhibited cell apoptosis and SOD activation. Moreover, overexpression of NFAT5 apparently diminished histone acetylation and promoted the nuclear transport of Nrf2. Our results show that NFAT5 protects spinal astrocytes in a manner that depends on activation of the SIRT1/Nrf2 pathway. These findings present a novel potential molecular mechanism for NFAT5 therapy in the context of spinal cord injury.
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Affiliation(s)
- Xun Xia
- Department of Neurological Surgery, Chengdu Military General Hospital, Chengdu, 610083, China
| | - Bo Qu
- Department of Orthopaedics, Chengdu Military General Hospital, Chengdu, 610083, China
| | - Yun-Ming Li
- Department of Neurological Surgery, Chengdu Military General Hospital, Chengdu, 610083, China
| | - Li-Bin Yang
- Department of Neurological Surgery, Chengdu Military General Hospital, Chengdu, 610083, China
| | - Ke-Xia Fan
- Department of Neurological Surgery, Chengdu Military General Hospital, Chengdu, 610083, China
| | - Hui Zheng
- Department of Neurological Surgery, Chengdu Military General Hospital, Chengdu, 610083, China
| | - Hai-Dong Huang
- Department of Neurological Surgery, Chengdu Military General Hospital, Chengdu, 610083, China
| | - Jian-Wen Gu
- Department of Neurological Surgery, The 306th Hospital of PLA, No. 9 Anxiangbeili, Chaoyang District, Beijing, 100101, China.
| | - Yong-Qin Kuang
- Department of Neurological Surgery, Chengdu Military General Hospital, Chengdu, 610083, China.
| | - Yuan Ma
- Department of Neurological Surgery, Chengdu Military General Hospital, Chengdu, 610083, China.
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Asseburg H, Schäfer C, Müller M, Hagl S, Pohland M, Berressem D, Borchiellini M, Plank C, Eckert GP. Effects of Grape Skin Extract on Age-Related Mitochondrial Dysfunction, Memory and Life Span in C57BL/6J Mice. Neuromolecular Med 2016; 18:378-95. [DOI: 10.1007/s12017-016-8428-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 07/15/2016] [Indexed: 02/06/2023]
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Benlloch M, Obrador E, Valles SL, Rodriguez ML, Sirerol JA, Alcácer J, Pellicer JA, Salvador R, Cerdá C, Sáez GT, Estrela JM. Pterostilbene Decreases the Antioxidant Defenses of Aggressive Cancer Cells In Vivo: A Physiological Glucocorticoids- and Nrf2-Dependent Mechanism. Antioxid Redox Signal 2016; 24:974-90. [PMID: 26651028 PMCID: PMC4921902 DOI: 10.1089/ars.2015.6437] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIMS Polyphenolic phytochemicals have anticancer properties. However, in mechanistic studies, lack of correlation with the bioavailable concentrations is a critical issue. Some reports had suggested that these molecules downregulate the stress response, which may affect growth and the antioxidant protection of malignant cells. Initially, we studied this potential underlying mechanism using different human melanomas (with genetic backgrounds correlating with most melanomas), growing in nude mice as xenografts, and pterostilbene (Pter, a natural dimethoxylated analog of resveratrol). RESULTS Intravenous administration of Pter decreased human melanoma growth in vivo. However, Pter, at levels measured within the tumors, did not affect melanoma growth in vitro. Pter inhibited pituitary production of the adrenocorticotropin hormone (ACTH), decreased plasma levels of corticosterone, and thereby downregulated the glucocorticoid receptor- and nuclear factor (erythroid-derived 2)-like 2 (Nrf2)-dependent antioxidant defense system in growing melanomas. Exogenous corticosterone or genetically induced Nrf2 overexpression in melanoma cells prevented the inhibition of tumor growth and decreased antioxidant defenses in these malignant cells. These effects and mechanisms were also found in mice bearing different human pancreatic cancers. Glutathione depletion (selected as an antimelanoma strategy) facilitated the complete elimination by chemotherapy of melanoma cells isolated from mice treated with Pter. INNOVATION Although bioavailability-related limitations may preclude direct anticancer effects in vivo, natural polyphenols may also interfere with the growth and defense of cancer cells by downregulating the pituitary gland-dependent ACTH synthesis. CONCLUSIONS Pter downregulates glucocorticoid production, thus decreasing the glucocorticoid receptor and Nrf2-dependent signaling/transcription and the antioxidant protection of melanoma and pancreatic cancer cells. Antioxid. Redox Signal. 24, 974-990.
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Affiliation(s)
- María Benlloch
- 1 Department of Health and Functional Valorization, San Vicente Martir Catholic University , Valencia, Spain
| | - Elena Obrador
- 2 Department of Physiology, University of Valencia , Valencia, Spain
| | - Soraya L Valles
- 2 Department of Physiology, University of Valencia , Valencia, Spain
| | - María L Rodriguez
- 2 Department of Physiology, University of Valencia , Valencia, Spain
| | - J Antoni Sirerol
- 2 Department of Physiology, University of Valencia , Valencia, Spain
| | - Javier Alcácer
- 3 Pathology Laboratory, Quirón Hospital , Valencia, Spain
| | - José A Pellicer
- 2 Department of Physiology, University of Valencia , Valencia, Spain
| | - Rosario Salvador
- 2 Department of Physiology, University of Valencia , Valencia, Spain
| | - Concha Cerdá
- 4 Service of Clinical Analysis-CDB, General University Hospital, University of Valencia , Valencia, Spain
| | - Guillermo T Sáez
- 4 Service of Clinical Analysis-CDB, General University Hospital, University of Valencia , Valencia, Spain .,5 Department of Biochemistry and Molecular Biology, Faculty of Medicine and Odontology-INCLIVA, Service of Clinical Analysis, Dr. Peset University Hospital, University of Valencia , Valencia, Spain
| | - José M Estrela
- 2 Department of Physiology, University of Valencia , Valencia, Spain
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Surai P, Fisinin V. 25. Antioxidant system regulation: from vitamins to vitagenes. HANDBOOK OF CHOLESTEROL 2016. [DOI: 10.3920/978-90-8686-821-6_25] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- P.F. Surai
- Feed-Food Ltd., 53 Dongola Road, KA7 3BN Ayr, UK
- Trakia University, Studentski Grad, Stara Zagora 6000, Bulgaria
- Szent Istvan University, Godollo 2103, Hungary
- Sumy National Agrarian University, Kirova Street 160, Sumy 40021, Ukraine
- Odessa National Academy of Food Technologies, Kanatna Street 112, Odessa 65000, Ukraine
| | - V.I. Fisinin
- All Russian Institute of Poultry Husbandry, Ptitzegradskaya Street 10, Sergiev Posad, Moscow region 141311, Russia
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Martin A, Tegla CA, Cudrici CD, Kruszewski AM, Azimzadeh P, Boodhoo D, Mekala AP, Rus V, Rus H. Role of SIRT1 in autoimmune demyelination and neurodegeneration. Immunol Res 2015; 61:187-97. [PMID: 25281273 DOI: 10.1007/s12026-014-8557-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Multiple sclerosis (MS) is a demyelinating disease characterized by chronic inflammation of the central nervous system, in which many factors can act together to influence disease susceptibility and progression. SIRT1 is a member of the histone deacetylase class III family of proteins and is an NAD(+)-dependent histone and protein deacetylase. SIRT1 can induce chromatin silencing through the deacetylation of histones and plays an important role as a key regulator of a wide variety of cellular and physiological processes including DNA damage, cell survival, metabolism, aging, and neurodegeneration. It has gained a lot of attention recently because many studies in animal models of demyelinating and neurodegenerative diseases have shown that SIRT1 induction can ameliorate the course of the disease. SIRT1 expression was found to be decreased in the peripheral blood mononuclear cells of MS patients during relapses. SIRT1 represents a possible biomarker of relapses and a potential new target for therapeutic intervention in MS. Modulation of SIRT1 may be a valuable strategy for treating or preventing MS and neurodegenerative central nervous system disorders.
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Affiliation(s)
- Alvaro Martin
- Department of Neurology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
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Rabassa M, Zamora-Ros R, Urpi-Sarda M, Bandinelli S, Ferrucci L, Andres-Lacueva C, Cherubini A. Association of habitual dietary resveratrol exposure with the development of frailty in older age: the Invecchiare in Chianti study. Am J Clin Nutr 2015; 102:1534-42. [PMID: 26490492 PMCID: PMC4658467 DOI: 10.3945/ajcn.115.118976] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 09/15/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Resveratrol may play a protective role against the frailty syndrome (FS) because of its antioxidant and anti-inflammatory properties. OBJECTIVE We prospectively evaluated the association between habitual dietary resveratrol exposure and the development of FS after 3-, 6-, and 9-y follow-up periods in a community-dwelling older population. DESIGN We conducted a longitudinal analysis with the use of data from 769 participants aged ≥65 y from the Invecchiare in Chianti (Aging in Chianti) study. Total dietary resveratrol (TDR) intake was estimated at baseline with the use of a validated food-frequency questionnaire, which was developed to assess participants' usual food intakes over the previous year, and an ad hoc resveratrol database. Total urinary resveratrol (TUR) was analyzed with the use of liquid chromatography-tandem mass spectrometry with a previous solid-phase extraction at baseline. The combination of both measures [total dietary resveratrol plus total urinary resveratrol (TDR+TUR)] was computed with the use of the Howe's method. FS was assessed at baseline and at 3-, 6-, and 9-y of follow-up and was defined as the presence of ≥3 of the following 5 criteria: shrinking, exhaustion, sedentariness, slowness, and weakness. RESULTS TDR+TUR concentrations were inversely associated with FS risk over 3-y of follow-up (OR for comparison of extreme tertiles: 0.11; 95% CI: 0.03, 0.45; P-trend = 0.002) but not after 6- and 9-y of follow-up in multinomial logistic regression models adjusted for baseline frailty status and potential confounders. These results did not differ when analyses were further adjusted for inflammatory markers. CONCLUSION Higher habitual dietary resveratrol exposure was associated with lower risk of older community dwellers developing FS during the first 3 y of follow-up but not after longer follow-up periods.
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Affiliation(s)
- Montserrat Rabassa
- Biomarkers and Nutrimetabolomics Laboratory, Nutrition and Food Science Department, Catalonian Reference Network on Food Technology (XaRTA), Institute for Research on Nutrition and Food Safety (INSA-UB), Campus Torribera, Pharmacy and Food Sciences Faculty, University of Barcelona, Barcelona, Spain
| | - Raul Zamora-Ros
- Biomarkers Group, Nutrition and Metabolism Section, International Agency for Research on Cancer (IARC), Lyon, France
| | - Mireia Urpi-Sarda
- Biomarkers and Nutrimetabolomics Laboratory, Nutrition and Food Science Department, Catalonian Reference Network on Food Technology (XaRTA), Institute for Research on Nutrition and Food Safety (INSA-UB), Campus Torribera, Pharmacy and Food Sciences Faculty, University of Barcelona, Barcelona, Spain
| | | | - Luigi Ferrucci
- Clinical Research Branch, National Institute on Aging, NIH, Baltimore, MD; and
| | - Cristina Andres-Lacueva
- Biomarkers and Nutrimetabolomics Laboratory, Nutrition and Food Science Department, Catalonian Reference Network on Food Technology (XaRTA), Institute for Research on Nutrition and Food Safety (INSA-UB), Campus Torribera, Pharmacy and Food Sciences Faculty, University of Barcelona, Barcelona, Spain;
| | - Antonio Cherubini
- Geriatrics and Geriatric Emergency Care, Italian National Research Centre on Aging, Ancona, Italy
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Mialet-Perez J, Douin-Echinard V, Cussac D, Bril A, Parini A. [Ageing: a matter of heart?]. Med Sci (Paris) 2015; 31:1006-13. [PMID: 26576608 DOI: 10.1051/medsci/20153111015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Ageing is considered as a major risk factor for the development of chronic diseases. Among these, heart failure seems to be particularly important for both triggering and accelerating pathological ageing. In the present review, we give a general overview of the most relevant results concerning the mechanism of normal and premature senescence of cardiomyocytes and cardiac stromal cells. In particular, we will address the role of telomere dysfunction, DNA damage response, impairment of mitochondrial function, miRNAs and secretome of senescent cells in cardiac ageing and failure.
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Affiliation(s)
- Jeanne Mialet-Perez
- Inserm, UMR1048, institut des maladies métaboliques et cardiovasculaires, 1, avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France - Université Paul Sabatier, Toulouse, France
| | - Victorine Douin-Echinard
- Inserm, UMR1048, institut des maladies métaboliques et cardiovasculaires, 1, avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France - Université Paul Sabatier, Toulouse, France
| | - Daniel Cussac
- Inserm, UMR1048, institut des maladies métaboliques et cardiovasculaires, 1, avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France - Université Paul Sabatier, Toulouse, France
| | - Antoine Bril
- Institut de recherches internationales Servier, Suresnes, France
| | - Angelo Parini
- Inserm, UMR1048, institut des maladies métaboliques et cardiovasculaires, 1, avenue Jean Poulhès, BP 84225, 31432 Toulouse cedex 4, France - Université Paul Sabatier, Toulouse, France
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Traba J, Kwarteng-Siaw M, Okoli TC, Li J, Huffstutler RD, Bray A, Waclawiw MA, Han K, Pelletier M, Sauve AA, Siegel RM, Sack MN. Fasting and refeeding differentially regulate NLRP3 inflammasome activation in human subjects. J Clin Invest 2015; 125:4592-600. [PMID: 26529255 DOI: 10.1172/jci83260] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/24/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Activation of the NLRP3 inflammasome is associated with metabolic dysfunction, and intermittent fasting has been shown to improve clinical presentation of NLRP3 inflammasome-linked diseases. As mitochondrial perturbations, which function as a damage-associated molecular pattern, exacerbate NLRP3 inflammasome activation, we investigated whether fasting blunts inflammasome activation via sirtuin-mediated augmentation of mitochondrial integrity. METHODS We performed a clinical study of 19 healthy volunteers. Each subject underwent a 24-hour fast and then was fed a fixed-calorie meal. Blood was drawn during the fasted and fed states and analyzed for NRLP3 inflammasome activation. We enrolled an additional group of 8 healthy volunteers to assess the effects of the sirtuin activator, nicotinamide riboside, on NLRP3 inflammasome activation. RESULTS In the fasting/refeeding study, individuals showed less NLRP3 inflammasome activation in the fasted state compared with that in refed conditions. In a human macrophage line, depletion of the mitochondrial-enriched sirtuin deacetylase SIRT3 increased NLRP3 inflammasome activation in association with excessive mitochondrial ROS production. Furthermore, genetic and pharmacologic SIRT3 activation blunted NLRP3 activity in parallel with enhanced mitochondrial function in cultured cells and in leukocytes extracted from healthy volunteers and from refed individuals but not in those collected during fasting. CONCLUSIONS Together, our data indicate that nutrient levels regulate the NLRP3 inflammasome, in part through SIRT3-mediated mitochondrial homeostatic control. Moreover, these results suggest that deacetylase-dependent inflammasome attenuation may be amenable to targeting in human disease. TRIAL REGISTRATION ClinicalTrials.gov NCT02122575 and NCT00442195. FUNDING Division of Intramural Research, NHLBI of the NIH.
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Gomes P, Fleming Outeiro T, Cavadas C. Emerging Role of Sirtuin 2 in the Regulation of Mammalian Metabolism. Trends Pharmacol Sci 2015; 36:756-768. [DOI: 10.1016/j.tips.2015.08.001] [Citation(s) in RCA: 156] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 07/30/2015] [Accepted: 08/03/2015] [Indexed: 12/23/2022]
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Fry JL, Shiraishi Y, Turcotte R, Yu X, Gao YZ, Akiki R, Bachschmid M, Zhang Y, Morgan KG, Cohen RA, Seta F. Vascular Smooth Muscle Sirtuin-1 Protects Against Aortic Dissection During Angiotensin II-Induced Hypertension. J Am Heart Assoc 2015; 4:e002384. [PMID: 26376991 PMCID: PMC4599512 DOI: 10.1161/jaha.115.002384] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background Sirtuin-1 (SirT1), a nicotinamide adenine dinucleotide+–dependent deacetylase, is a key enzyme in the cellular response to metabolic, inflammatory, and oxidative stresses; however, the role of endogenous SirT1 in the vasculature has not been fully elucidated. Our goal was to evaluate the role of vascular smooth muscle SirT1 in the physiological response of the aortic wall to angiotensin II, a potent hypertrophic, oxidant, and inflammatory stimulus. Methods and Results Mice lacking SirT1 in vascular smooth muscle (ie, smooth muscle SirT1 knockout) had drastically high mortality (70%) caused by aortic dissection after angiotensin II infusion (1 mg/kg per day) but not after an equipotent dose of norepinephrine, despite comparable blood pressure increases. Smooth muscle SirT1 knockout mice did not show any abnormal aortic morphology or blood pressure compared with wild-type littermates. Nonetheless, in response to angiotensin II, aortas from smooth muscle SirT1 knockout mice had severely disorganized elastic lamellae with frequent elastin breaks, increased oxidant production, and aortic stiffness compared with angiotensin II–treated wild-type mice. Matrix metalloproteinase expression and activity were increased in the aortas of angiotensin II–treated smooth muscle SirT1 knockout mice and were prevented in mice overexpressing SirT1 in vascular smooth muscle or with use of the oxidant scavenger tempol. Conclusions Endogenous SirT1 in aortic smooth muscle is required to maintain the structural integrity of the aortic wall in response to oxidant and inflammatory stimuli, at least in part, by suppressing oxidant-induced matrix metalloproteinase activity. SirT1 activators could potentially be a novel therapeutic approach to prevent aortic dissection and rupture in patients at risk, such as those with hypertension or genetic disorders, such as Marfan’s syndrome.
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Affiliation(s)
- Jessica L Fry
- Vascular Biology Section, Boston University Medical Campus, Boston, MA (J.L.F., Y.S., R.A., M.B., R.A.C., F.S.)
| | - Yasunaga Shiraishi
- Vascular Biology Section, Boston University Medical Campus, Boston, MA (J.L.F., Y.S., R.A., M.B., R.A.C., F.S.)
| | - Raphaël Turcotte
- Department of Biomedical Engineering, Boston University, Boston, MA (R.T., Y.Z.G., Y.Z.) Advanced Microscopy Program, Center for Systems Biology and Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA (R.T.)
| | - Xunjie Yu
- Department of Mechanical Engineering, Boston University, Boston, MA (X.Y., Y.Z.)
| | - Yuan Z Gao
- Department of Biomedical Engineering, Boston University, Boston, MA (R.T., Y.Z.G., Y.Z.) Health Science Department, Boston University, Boston, MA (Y.Z.G., K.G.M.)
| | - Rachid Akiki
- Vascular Biology Section, Boston University Medical Campus, Boston, MA (J.L.F., Y.S., R.A., M.B., R.A.C., F.S.)
| | - Markus Bachschmid
- Vascular Biology Section, Boston University Medical Campus, Boston, MA (J.L.F., Y.S., R.A., M.B., R.A.C., F.S.)
| | - Yanhang Zhang
- Department of Biomedical Engineering, Boston University, Boston, MA (R.T., Y.Z.G., Y.Z.) Department of Mechanical Engineering, Boston University, Boston, MA (X.Y., Y.Z.)
| | - Kathleen G Morgan
- Health Science Department, Boston University, Boston, MA (Y.Z.G., K.G.M.)
| | - Richard A Cohen
- Vascular Biology Section, Boston University Medical Campus, Boston, MA (J.L.F., Y.S., R.A., M.B., R.A.C., F.S.)
| | - Francesca Seta
- Vascular Biology Section, Boston University Medical Campus, Boston, MA (J.L.F., Y.S., R.A., M.B., R.A.C., F.S.)
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Favero G, Franceschetti L, Rodella LF, Rezzani R. Sirtuins, aging, and cardiovascular risks. AGE (DORDRECHT, NETHERLANDS) 2015; 37:9804. [PMID: 26099749 PMCID: PMC4476976 DOI: 10.1007/s11357-015-9804-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 06/12/2015] [Indexed: 05/17/2023]
Abstract
The sirtuins comprise a highly conserved family proteins present in virtually all species from bacteria to mammals. Sirtuins are members of the highly conserved class III histone deacetylases, and seven sirtuin genes (sirtuins 1-7) have been identified and characterized in mammals. Sirtuin activity is linked to metabolic control, apoptosis, cell survival, development, inflammation, and healthy aging. In this review, we summarize and discuss the potential mutual relations between each sirtuin and cardiovascular health and the impact of sirtuins on oxidative stress and so age-related cardiovascular disorders, underlining the possibility that sirtuins will be novel targets to contrast cardiovascular risks induced by aging.
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Affiliation(s)
- Gaia Favero
- />Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Lorenzo Franceschetti
- />Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Luigi Fabrizio Rodella
- />Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
- />Interdipartimental University Center of Research “Adaption and Regeneration of Tissues and Organs (ARTO)”, Brescia, Italy
| | - Rita Rezzani
- />Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
- />Interdipartimental University Center of Research “Adaption and Regeneration of Tissues and Organs (ARTO)”, Brescia, Italy
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Liu J, Bi X, Chen T, Zhang Q, Wang SX, Chiu JJ, Liu GS, Zhang Y, Bu P, Jiang F. Shear stress regulates endothelial cell autophagy via redox regulation and Sirt1 expression. Cell Death Dis 2015; 6:e1827. [PMID: 26181207 PMCID: PMC4650738 DOI: 10.1038/cddis.2015.193] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/26/2015] [Accepted: 06/15/2015] [Indexed: 12/20/2022]
Abstract
Disturbed cell autophagy is found in various cardiovascular disease conditions. Biomechanical stimuli induced by laminar blood flow have important protective actions against the development of various vascular diseases. However, the impacts and underlying mechanisms of shear stress on the autophagic process in vascular endothelial cells (ECs) are not entirely understood. Here we investigated the impacts of shear stress on autophagy in human vascular ECs. We found that shear stress induced by laminar flow, but not that by oscillatory or low-magnitude flow, promoted autophagy. Time-course analysis and flow cessation experiments confirmed that this effect was not a transient adaptive stress response but appeared to be a sustained physiological action. Flow had no effect on the mammalian target of rapamycin-ULK pathway, whereas it significantly upregulated Sirt1 expression. Inhibition of Sirt1 blunted shear stress-induced autophagy. Overexpression of wild-type Sirt1, but not the deacetylase-dead mutant, was sufficient to induce autophagy in ECs. Using both of gain- and loss-of-function experiments, we showed that Sirt1-dependent activation of FoxO1 was critical in mediating shear stress-induced autophagy. Shear stress also induced deacetylation of Atg5 and Atg7. Moreover, shear stress-induced Sirt1 expression and autophagy were redox dependent, whereas Sirt1 might act as a redox-sensitive transducer mediating reactive oxygen species-elicited autophagy. Functionally, we demonstrated that flow-conditioned cells are more resistant to oxidant-induced cell injury, and this cytoprotective effect was abolished after inhibition of autophagy. In summary, these results suggest that Sirt1-mediated autophagy in ECs may be a novel mechanism by which laminar flow produces its vascular-protective actions.
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Affiliation(s)
- J Liu
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - X Bi
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - T Chen
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - Q Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - S-X Wang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - J-J Chiu
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan, Taiwan
| | - G-S Liu
- Centre for Eye Research Australia, Department of Ophthalmology, University of Melbourne, East Melbourne, Victoria, Australia
| | - Y Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, China
| | - P Bu
- Department of Cardiology, Qilu Hospital, Shandong University, Jinan, China
| | - F Jiang
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
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Prozorovski T, Schneider R, Berndt C, Hartung HP, Aktas O. Redox-regulated fate of neural stem progenitor cells. Biochim Biophys Acta Gen Subj 2015; 1850:1543-54. [PMID: 25662818 DOI: 10.1016/j.bbagen.2015.01.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 01/29/2015] [Indexed: 12/31/2022]
Abstract
BACKGROUND Accumulated data indicate that self-renewal, multipotency, and differentiation of neural stem cells are under an intrinsic control mediated by alterations in the redox homeostasis. These dynamic redox changes not only reflect and support the ongoing metabolic and energetic processes, but also serve to coordinate redox-signaling cascades. Controlling particular redox couples seems to have a relevant impact on cell fate decision during development, adult neurogenesis and regeneration. SCOPE OF REVIEW Our own research provided initial evidence for the importance of NAD+-dependent enzymes in neural stem cell fate decision. In this review, we summarize recent knowledge on the active role of reactive oxygen species, redox couples and redox-signaling mechanisms on plasticity and function of neural stem and progenitor cells focusing on NAD(P)+/NAD(P)H-mediated processes. MAJOR CONCLUSIONS The compartmentalized subcellular sources and availability of oxidizing/reducing molecules in particular microenvironment define the specificity of redox regulation in modulating the delicate balance between stemness and differentiation of neural progenitors. The generalization of "reactive oxygen species" as well as the ambiguity of their origin might explain the diametrically-opposed findings in the field of redox-dependent cell fate reflected by the literature. GENERAL SIGNIFICANCE Increasing knowledge of temporary and spatially defined redox regulation is of high relevance for the development of novel approaches in the field of cell-based regeneration of nervous tissue in various pathological states. This article is part of a special issue entitled Redox regulation of differentiation and de-differentiation.
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Affiliation(s)
- Tim Prozorovski
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany.
| | - Reiner Schneider
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Carsten Berndt
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Hans-Peter Hartung
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Orhan Aktas
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
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Huang K, Chen C, Hao J, Huang J, Wang S, Liu P, Huang H. Polydatin promotes Nrf2-ARE anti-oxidative pathway through activating Sirt1 to resist AGEs-induced upregulation of fibronetin and transforming growth factor-β1 in rat glomerular messangial cells. Mol Cell Endocrinol 2015; 399:178-89. [PMID: 25192797 DOI: 10.1016/j.mce.2014.08.014] [Citation(s) in RCA: 153] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 08/10/2014] [Accepted: 08/29/2014] [Indexed: 12/11/2022]
Abstract
Sirt1 and nuclear factor-E2 related factor 2 (Nrf2)-anti-oxidant response element (ARE) anti-oxidative pathway play important regulatory roles in the pathological progression of diabetic nephropathy (DN) induced by advanced glycation-end products (AGEs). Polydatin (PD), a glucoside of resveratrol, has been shown to possess strong anti-oxidative bioactivity. Our previous study demonstrated that PD markedly resists the progression of diabetic renal fibrosis and thus, inhibits the development of DN. Whereas, whether PD could resist DN through regulating Sirt1 and consequently promoting Nrf2-ARE pathway needs further investigation. Here, we found that concomitant with decreasing RAGE (the specific receptor for AGEs) expression, PD significantly reversed the downregulation of Sirt1 in terms of protein expression and deacetylase activity and attenuated FN and TGF-β1 expression in GMCs exposed to AGEs. Under AGEs-treatment condition, PD could decrease Keap1 expression and promote the nuclear content, ARE-binding ability, and transcriptional activity of Nrf2. In addition, PD increased the protein levels of heme oxygenase 1 (HO-1) and superoxide dismutase 1 (SOD1), two target genes of Nrf2. The activation of Nrf2-ARE pathway by PD eventually led to the quenching of ROS overproduction sharply boosted by AGEs. Depletion of Sirt1 blocked Nrf2-ARE pathway activation and reversed FN and TGF-β1 downregulation induced by PD in GMCs challenged with AGEs. Along with reducing HO-1 and SOD1 expression, silencing of Nrf2 increased FN and TGF-β1 levels. PD treatment elevated Sirt1 and Nrf2 levels in the kidney tissues of diabetic rats, then improved the anti-oxidative capacity and renal dysfunction of diabetic models, and finally reversed the upregulation of FN and TGF-β1. Taken together, the resistance of PD on upregulated FN and TGF-β1 induced by AGEs via oxidative stress in GMCs is closely associated with its activation of Sirt1-Nrf2-ARE pathway.
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Affiliation(s)
- Kaipeng Huang
- Department of Pharmacy, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China; Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Cheng Chen
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jie Hao
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Junying Huang
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Shaogui Wang
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Peiqing Liu
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Heqing Huang
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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Sidorova-Darmos E, Wither RG, Shulyakova N, Fisher C, Ratnam M, Aarts M, Lilge L, Monnier PP, Eubanks JH. Differential expression of sirtuin family members in the developing, adult, and aged rat brain. Front Aging Neurosci 2014; 6:333. [PMID: 25566066 PMCID: PMC4270178 DOI: 10.3389/fnagi.2014.00333] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 11/25/2014] [Indexed: 12/21/2022] Open
Abstract
The sirtuins are NAD+-dependent protein deacetylases and/or ADP-ribosyltransferases that play roles in metabolic homeostasis, stress response and potentially aging. This enzyme family resides in different subcellular compartments, and acts on a number of different targets in the nucleus, cytoplasm and in the mitochondria. Despite their recognized ability to regulate metabolic processes, the roles played by specific sirtuins in the brain—the most energy demanding tissue in the body—remains less well investigated and understood. In the present study, we examined the regional mRNA and protein expression patterns of individual sirtuin family members in the developing, adult, and aged rat brain. Our results show that while each sirtuin is expressed in the brain at each of these different stages, they display unique spatial and temporal expression patterns within the brain. Further, for specific members of the family, the protein expression profile did not coincide with their respective mRNA expression profile. Moreover, using primary cultures enriched for neurons and astrocytes respectively, we found that specific sirtuin members display preferential neural lineage expression. Collectively, these results provide the first composite illustration that sirtuin family members display differential expression patterns in the brain, and provide evidence that specific sirtuins could potentially be targeted to achieve cell-type selective effects within the brain.
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Affiliation(s)
- Elena Sidorova-Darmos
- Division of Genetics and Development, Toronto Western Research Institute Toronto, ON, Canada ; Department of Physiology, University of Toronto Toronto, ON, Canada
| | - Robert G Wither
- Division of Genetics and Development, Toronto Western Research Institute Toronto, ON, Canada
| | - Natalya Shulyakova
- Division of Genetics and Development, Toronto Western Research Institute Toronto, ON, Canada ; Department of Physiology, University of Toronto Toronto, ON, Canada
| | - Carl Fisher
- Department of Medical Biophysics, University of Toronto Toronto, ON, Canada
| | - Melanie Ratnam
- Department of Cell Systems Biology, University of Toronto Toronto, ON, Canada
| | - Michelle Aarts
- Department of Cell Systems Biology, University of Toronto Toronto, ON, Canada
| | - Lothar Lilge
- Department of Medical Biophysics, University of Toronto Toronto, ON, Canada
| | - Philippe P Monnier
- Division of Genetics and Development, Toronto Western Research Institute Toronto, ON, Canada ; Department of Physiology, University of Toronto Toronto, ON, Canada
| | - James H Eubanks
- Division of Genetics and Development, Toronto Western Research Institute Toronto, ON, Canada ; Department of Physiology, University of Toronto Toronto, ON, Canada ; Institute of Medical Sciences, University of Toronto Toronto, ON, Canada ; Department of Surgery (Neurosurgery), University of Toronto Toronto, ON, Canada
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49
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Cui H, Kamal Z, Ai T, Xu Y, More SS, Wilson DJ, Chen L. Discovery of potent and selective sirtuin 2 (SIRT2) inhibitors using a fragment-based approach. J Med Chem 2014; 57:8340-57. [PMID: 25275824 DOI: 10.1021/jm500777s] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Sirtuin 2 (SIRT2) is one of the sirtuins, a family of NAD(+)-dependent deacetylases that act on a variety of histone and non-histone substrates. Accumulating biological functions and potential therapeutic applications have drawn interest in the discovery and development of SIRT2 inhibitors. Herein we report our discovery of novel SIRT2 inhibitors using a fragment-based approach. Inspired by the purported close binding proximity of suramin and nicotinamide, we prepared two sets of fragments, namely, the naphthylamide sulfonic acids and the naphthalene-benzamides and -nicotinamides. Biochemical evaluation of these two series provided structure-activity relationship (SAR) information, which led to the design of (5-benzamidonaphthalen-1/2-yloxy)nicotinamide derivatives. Among these inhibitors, one compound exhibited high anti-SIRT2 activity (48 nM) and excellent selectivity for SIRT2 over SIRT1 and SIRT3. In vitro, it also increased the acetylation level of α-tubulin, a well-established SIRT2 substrate, in both concentration- and time-dependent manners. Further kinetic studies revealed that this compound behaves as a competitive inhibitor against the peptide substrate and most likely as a noncompetitive inhibitor against NAD(+). Taken together, these results indicate that we have discovered a potent and selective SIRT2 inhibitor whose novel structure merits further exploration.
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Affiliation(s)
- Huaqing Cui
- Center for Drug Design, Academic Health Center, University of Minnesota , 516 Delaware Street SE, Minneapolis, Minnesota 55455, United States
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Fernandez J, Marroquin-Guzman M, Nandakumar R, Shijo S, Cornwell KM, Li G, Wilson RA. Plant defence suppression is mediated by a fungal sirtuin during rice infection byMagnaporthe oryzae. Mol Microbiol 2014; 94:70-88. [DOI: 10.1111/mmi.12743] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2014] [Indexed: 02/01/2023]
Affiliation(s)
- Jessie Fernandez
- Department of Plant Pathology; University of Nebraska-Lincoln; Lincoln NE 68583 USA
| | | | - Renu Nandakumar
- Proteomic and Metabolomic Core Facility; Redox Biology Center; Department of Biochemistry; University of Nebraska-Lincoln; Lincoln NE 68588 USA
| | - Sara Shijo
- Department of Plant Pathology; University of Nebraska-Lincoln; Lincoln NE 68583 USA
| | - Kathryn M. Cornwell
- Department of Plant Pathology; University of Nebraska-Lincoln; Lincoln NE 68583 USA
| | - Gang Li
- Department of Plant Pathology; University of Nebraska-Lincoln; Lincoln NE 68583 USA
| | - Richard A. Wilson
- Department of Plant Pathology; University of Nebraska-Lincoln; Lincoln NE 68583 USA
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