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Yousef H, Khandoker AH, Feng SF, Helf C, Jelinek HF. Inflammation, oxidative stress and mitochondrial dysfunction in the progression of type II diabetes mellitus with coexisting hypertension. Front Endocrinol (Lausanne) 2023; 14:1173402. [PMID: 37383391 PMCID: PMC10296202 DOI: 10.3389/fendo.2023.1173402] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/26/2023] [Indexed: 06/30/2023] Open
Abstract
Introduction Type II diabetes mellitus (T2DM) is a metabolic disorder that poses a serious health concern worldwide due to its rising prevalence. Hypertension (HT) is a frequent comorbidity of T2DM, with the co-occurrence of both conditions increasing the risk of diabetes-associated complications. Inflammation and oxidative stress (OS) have been identified as leading factors in the development and progression of both T2DM and HT. However, OS and inflammation processes associated with these two comorbidities are not fully understood. This study aimed to explore changes in the levels of plasma and urinary inflammatory and OS biomarkers, along with mitochondrial OS biomarkers connected to mitochondrial dysfunction (MitD). These markers may provide a more comprehensive perspective associated with disease progression from no diabetes, and prediabetes, to T2DM coexisting with HT in a cohort of patients attending a diabetes health clinic in Australia. Methods Three-hundred and eighty-four participants were divided into four groups according to disease status: 210 healthy controls, 55 prediabetic patients, 32 T2DM, and 87 patients with T2DM and HT (T2DM+HT). Kruskal-Wallis and χ2 tests were conducted between the four groups to detect significant differences for numerical and categorical variables, respectively. Results and discussion For the transition from prediabetes to T2DM, interleukin-10 (IL-10), C-reactive protein (CRP), 8-hydroxy-2'-deoxyguanosine (8-OHdG), humanin (HN), and p66Shc were the most discriminatory biomarkers, generally displaying elevated levels of inflammation and OS in T2DM, in addition to disrupted mitochondrial function as revealed by p66Shc and HN. Disease progression from T2DM to T2DM+HT indicated lower levels of inflammation and OS as revealed through IL-10, interleukin-6 (IL-6), interleukin-1β (IL-1β), 8-OHdG and oxidized glutathione (GSSG) levels, most likely due to antihypertensive medication use in the T2DM +HT patient group. The results also indicated better mitochondrial function in this group as shown through higher HN and lower p66Shc levels, which can also be attributed to medication use. However, monocyte chemoattractant protein-1 (MCP-1) levels appeared to be independent of medication, providing an effective biomarker even in the presence of medication use. The results of this study suggest that a more comprehensive review of inflammation and OS biomarkers is more effective in discriminating between the stages of T2DM progression in the presence or absence of HT. Our results further indicate the usefulness of medication use, especially with respect to the known involvement of inflammation and OS in disease progression, highlighting specific biomarkers during disease progression and therefore allowing a more targeted individualized treatment plan.
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Affiliation(s)
- Hibba Yousef
- Department of Biomedical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Ahsan H. Khandoker
- Department of Biomedical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
- Healthcare Engineering Innovation Center, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Samuel F. Feng
- Department of Science and Engineering, Sorbonne University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Charlotte Helf
- Dermatology, Venereology and Allergology, University Hospital Schleswig-Holstein, Schleswig-Holstein, Germany
| | - Herbert F. Jelinek
- Department of Biomedical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
- Healthcare Engineering Innovation Center, Khalifa University, Abu Dhabi, United Arab Emirates
- Biotechnology Center, Khalifa University, Abu Dhabi, United Arab Emirates
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2
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Tang F, Wang Z, Zhou J, Yao J. Salvianolic Acid A Protects against Acetaminophen-Induced Hepatotoxicity via Regulation of the miR-485-3p/SIRT1 Pathway. Antioxidants (Basel) 2023; 12:antiox12040870. [PMID: 37107244 PMCID: PMC10135683 DOI: 10.3390/antiox12040870] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/07/2023] Open
Abstract
The vast majority of drug-induced liver injury is mainly attributed to acetaminophen (APAP) overdose. Salvianolic acid A (Sal A), a powerful water-soluble compound obtained from Salvia miltiorrhiza, has been confirmed to exert hepatoprotective effects. However, the beneficial effects and the exact mechanisms of Sal A on APAP-induced hepatotoxicity remain unclear. In this study, APAP-induced liver injury with or without Sal A treatment was examined in vitro and in vivo. The results showed that Sal A could alleviate oxidative stress and inflammation by regulating Sirtuin 1 (SIRT1). Furthermore, miR-485-3p could target SIRT1 after APAP hepatotoxicity and was regulated by Sal A. Importantly, inhibiting miR-485-3p had a hepatoprotective effect similar to that of Sal A on APAP-exposed AML12 cells. These findings suggest that regulating the miR-485-3p/SIRT1 pathway can alleviate oxidative stress and inflammation induced by APAP in the context of Sal A treatment.
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Affiliation(s)
- Fan Tang
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Zhecheng Wang
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Junjun Zhou
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Jihong Yao
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
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3
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Bora D, Sharma A, John SE, Shankaraiah N. Development of hydrazide hydrazone-tethered combretastatin-oxindole derivatives as antimitotic agents. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wang R, Shi Z, Li J, Tang D, Qin S, Guo Y. Protective Effect of Manganese on Apoptosis and Mitochondrial Function of Heat-Stressed Primary Chick Embryonic Myocardial Cells. Biol Trace Elem Res 2022; 200:4419-4429. [PMID: 34779997 DOI: 10.1007/s12011-021-03016-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/03/2021] [Indexed: 12/16/2022]
Abstract
Heat stress, as a kind of oxidative stress, induces cell apoptosis. Apoptosis is a form of programmed cell death, and mitochondria play an important role in apoptosis. Manganese (Mn) has an antioxidant capacity by enhancing the activity of manganese superoxide dismutase (MnSOD). To investigate the potential effect of Mn on heat stress-induced apoptosis and mitochondrial function, we examined crucial related factors in the context of heat stress using primary chick embryonic myocardial cells pretreated with Mn for 24 h. The results showed that Mn restored the heat stress-induced decrease in cell viability and reduced the activities of caspase-3 (P < 0.05). The repression of the Δψm and intracellular ATP content caused by heat stress was reversed dramatically in the Mn pretreatment group (P < 0.05). Additionally, Mn inhibited heat stress-induced mitochondrial fission, as shown by decreased mitochondrial fission-related protein dynamin-related protein 1 (Drp1) expression and increased mitochondrial fusion-related protein optic atrophy 1 (Opa1) and mitofusin 1 (Mfn1) (P < 0.05) in primary chick embryonic myocardial cells. It was concluded that Mn attenuates the mitochondrial-mediated apoptosis pathway and sustains mitochondrial structure and function under heat stress in primary chick embryonic myocardial cells.
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Affiliation(s)
- Rui Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Zhaoguo Shi
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Jinlu Li
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Defu Tang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Shizhen Qin
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China.
| | - Yanli Guo
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
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5
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Haslem L, Hays JM, Hays FA. p66Shc in Cardiovascular Pathology. Cells 2022; 11:cells11111855. [PMID: 35681549 PMCID: PMC9180016 DOI: 10.3390/cells11111855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 02/06/2023] Open
Abstract
p66Shc is a widely expressed protein that governs a variety of cardiovascular pathologies by generating, and exacerbating, pro-apoptotic ROS signals. Here, we review p66Shc’s connections to reactive oxygen species, expression, localization, and discuss p66Shc signaling and mitochondrial functions. Emphasis is placed on recent p66Shc mitochondrial function discoveries including structure/function relationships, ROS identity and regulation, mechanistic insights, and how p66Shc-cyt c interactions can influence p66Shc mitochondrial function. Based on recent findings, a new p66Shc mitochondrial function model is also put forth wherein p66Shc acts as a rheostat that can promote or antagonize apoptosis. A discussion of how the revised p66Shc model fits previous findings in p66Shc-mediated cardiovascular pathology follows.
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Affiliation(s)
- Landon Haslem
- Biochemistry and Molecular Biology Department, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (L.H.); (J.M.H.)
| | - Jennifer M. Hays
- Biochemistry and Molecular Biology Department, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (L.H.); (J.M.H.)
| | - Franklin A. Hays
- Biochemistry and Molecular Biology Department, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (L.H.); (J.M.H.)
- Stephenson Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Correspondence:
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Ministrini S, Puspitasari YM, Beer G, Liberale L, Montecucco F, Camici GG. Sirtuin 1 in Endothelial Dysfunction and Cardiovascular Aging. Front Physiol 2021; 12:733696. [PMID: 34690807 PMCID: PMC8527036 DOI: 10.3389/fphys.2021.733696] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/30/2021] [Indexed: 01/10/2023] Open
Abstract
Sirtuin 1 (SIRT1) is a histone deacetylase belonging to the family of Sirtuins, a class of nicotinamide adenine dinucleotide (NAD+)-dependent enzymes with multiple metabolic functions. SIRT1 localizes in the nucleus and cytoplasm, and is implicated in the regulation of cell survival in response to several stimuli, including metabolic ones. The expression of SIRT1 is associated with lifespan and is reduced with aging both in animal models and in humans, where the lack of SIRT1 is regarded as a potential mediator of age-related cardiovascular diseases. In this review, we will summarize the extensive evidence linking SIRT1 functional and quantitative defects to cellular senescence and aging, with particular regard to their role in determining endothelial dysfunction and consequent cardiovascular diseases. Ultimately, we outline the translational perspectives for this topic, in order to highlight the missing evidence and the future research steps.
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Affiliation(s)
- Stefano Ministrini
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland.,Internal Medicine, Angiology and Atherosclerosis, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | | | - Georgia Beer
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Luca Liberale
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland.,First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,Istituto di Ricerca e Cura a Carattere Scientifico Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Genoa, Italy
| | - Giovanni G Camici
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Department of Research and Education, University Hospital Zurich, Zurich, Switzerland
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Xiao B, Li Y, Lin Y, Lin J, Zhang L, Wu D, Zeng J, Li J, Liu JW, Li G. Eicosapentaenoic acid (EPA) exhibits antioxidant activity via mitochondrial modulation. Food Chem 2021; 373:131389. [PMID: 34710690 DOI: 10.1016/j.foodchem.2021.131389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 09/25/2021] [Accepted: 10/09/2021] [Indexed: 12/13/2022]
Abstract
Reactive oxygen species (ROS) are mitochondrial respiration byproducts, the accumulation of which may cause oxidative damage and is associated with several chronic health problems. As an essential unsaturated fatty acid, eicosapentaenoic acid (EPA) provides various physiological functions; however, its exact regulatory role remains elusive. The current study aimed to address how EPA regulates cellular antioxidant capacity and the possible mechanisms of action. Upon 48 h of EPA treatment, the ROS levels of HepG2 cells were reduced by at least 40%; the total cellular antioxidant capacity was increased by approximately 50-70%, accompanied by enhanced activities and expression of major antioxidant enzymes. Furthermore, the mitochondrial membrane potential and the mitochondrial biogenesis were dramatically improved in EPA-treated cells. These data suggest that EPA improves cellular antioxidant capacity by enhancing mitochondrial function and biogenesis, which sheds light on EPA as a dietary complement to relieve the oxidative damage caused by chronic diseases.
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Affiliation(s)
- Baoping Xiao
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China
| | - Yuanyuan Li
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China
| | - Yanqi Lin
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China
| | - Jingyu Lin
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China
| | - Lingyu Zhang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China
| | - Daren Wu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China
| | - Jun Zeng
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China
| | - Jian Li
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China
| | - Jing Wen Liu
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China.
| | - Guiling Li
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian 361021, PR China; Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Xiamen, Fujian 361021, PR China.
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Yan L, Li S, Riaz M, Jiang C. Proline metabolism and biosynthesis behave differently in response to boron-deficiency and toxicity in Brassica napus. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 167:529-540. [PMID: 34425397 DOI: 10.1016/j.plaphy.2021.08.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/22/2021] [Accepted: 08/15/2021] [Indexed: 06/13/2023]
Abstract
Proline biosynthesis and accumulation is a common response to unfavorable environment in many plants. This work aimed to elucidate the effects of boron (B)-deficiency and toxicity on proline metabolism and biosynthesis in Brassica napus in a hydroponic experiment. The results showed that B-deficiency and toxicity exert injurious impact on plant growth, accumulated high malondialdehyde (MDA) content, and caused the destruction of subcellular structure. Proline accumulated in both B deprivation and B toxicity plants, except B toxicity-treated root. In roots, B-deficiency increased ornithine content and pyrroline-5-carboxylate reductase (P5CR) activity, with the higher expression of BnaC03.P5CR, whilst decreased glutamate, glutamate-1-semialdehyde (GSA), pyrroline-5-carboxylate (P5C) contents and ornithine-δ-aminotransferase (δ-OAT), pyrroline-5-carboxylate synthetase (P5CS), proline dehydrogenase (ProDH) activities in terms of down-regulated the BnaC04.P5CS2, BnaA04.P5CS2, and BnaAnn.ProDH expression. The glutamate and GSA contents were decreased while P5C, arginine, and ornithine contents were enhanced in leaves under B-deficient and toxicity conditions. Lower glutamate pathway-related substance contents, P5CR, and δ-OAT activities while higher ProDH activity along with the same trend of related-gene expression were observed in B-toxicity-treated roots. Importantly, principal component analysis (PCA) in conjunction with correlation analysis indicated that ornithine pathway-related substances and enzymes contributed more to proline accumulation in B-deficient plant and B toxicity-treated leaves. Collectively, proline accumulation is caused by increased synthesis and decreased decomposition, and positively contributed, at least partly, by regulated ornithine pathway.
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Affiliation(s)
- Lei Yan
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; Key Laboratory of Horticultural Plant Biology, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.
| | - Shuang Li
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China.
| | - Muhammad Riaz
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, South China Agricultural University, Guangzhou, 510642, China.
| | - Cuncang Jiang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, PR China.
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Oke SL, Lee K, Papp R, Laviolette SR, Hardy DB. In Utero Exposure to Δ9-Tetrahydrocannabinol Leads to Postnatal Catch-Up Growth and Dysmetabolism in the Adult Rat Liver. Int J Mol Sci 2021; 22:ijms22147502. [PMID: 34299119 PMCID: PMC8305322 DOI: 10.3390/ijms22147502] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/10/2021] [Accepted: 07/11/2021] [Indexed: 12/25/2022] Open
Abstract
The rates of gestational cannabis use have increased despite limited evidence for its safety in fetal life. Recent animal studies demonstrate that prenatal exposure to Δ9-tetrahydrocannabinol (Δ9-THC, the psychoactive component of cannabis) promotes intrauterine growth restriction (IUGR), culminating in postnatal metabolic deficits. Given IUGR is associated with impaired hepatic function, we hypothesized that Δ9-THC offspring would exhibit hepatic dyslipidemia. Pregnant Wistar rat dams received daily injections of vehicular control or 3 mg/kg Δ9-THC i.p. from embryonic day (E) 6.5 through E22. Exposure to Δ9-THC decreased the liver to body weight ratio at birth, followed by catch-up growth by three weeks of age. At six months, Δ9-THC-exposed male offspring exhibited increased visceral adiposity and higher hepatic triglycerides. This was instigated by augmented expression of enzymes involved in triglyceride synthesis (ACCα, SCD, FABP1, and DGAT2) at three weeks. Furthermore, the expression of hepatic DGAT1/DGAT2 was sustained at six months, concomitant with mitochondrial dysfunction (i.e., elevated p66shc) and oxidative stress. Interestingly, decreases in miR-203a-3p and miR-29a/b/c, both implicated in dyslipidemia, were also observed in these Δ9-THC-exposed offspring. Collectively, these findings indicate that prenatal Δ9-THC exposure results in long-term dyslipidemia associated with enhanced hepatic lipogenesis. This is attributed by mitochondrial dysfunction and epigenetic mechanisms.
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Affiliation(s)
- Shelby L. Oke
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, ON N6A 5C1, Canada; (S.L.O.); (K.L.); (R.P.)
- The Children’s Health Research Institute, The Lawson Health Research Institute, London, ON N6A 5C1, Canada
| | - Kendrick Lee
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, ON N6A 5C1, Canada; (S.L.O.); (K.L.); (R.P.)
- The Children’s Health Research Institute, The Lawson Health Research Institute, London, ON N6A 5C1, Canada
| | - Rosemary Papp
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, ON N6A 5C1, Canada; (S.L.O.); (K.L.); (R.P.)
| | - Steven R. Laviolette
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, ON N6A 5C1, Canada;
| | - Daniel B. Hardy
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, ON N6A 5C1, Canada; (S.L.O.); (K.L.); (R.P.)
- The Children’s Health Research Institute, The Lawson Health Research Institute, London, ON N6A 5C1, Canada
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, ON N6A 5C1, Canada;
- Department of Obstetrics and Gynaecology, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond Street, London, ON N6A 5C1, Canada
- Correspondence:
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Li G, Li Y, Xiao B, Cui D, Lin Y, Zeng J, Li J, Cao MJ, Liu J. Antioxidant Activity of Docosahexaenoic Acid (DHA) and Its Regulatory Roles in Mitochondria. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:1647-1655. [PMID: 33497204 DOI: 10.1021/acs.jafc.0c07751] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Reactive oxygen species (ROS) are single-electron-bearing oxidation-reduction products that are mainly produced in mitochondria. Excessive ROS accumulation may lead to oxidative damage. Docosahexaenoic acid (DHA) is an essential component of brain phospholipids and is mainly derived from the diet. Its antioxidant activities have been extensively studied. However, its regulatory roles in mitochondria and the underlying mechanism remain to be elucidated. In this study, the DHA's effect on cellular antioxidant capacity and mitochondrial functions was examined in HepG2 cells. The results showed that 100 μM DHA decreased cellular and mitochondrial ROS levels to 75.2 ± 9.4% (P < 0.05) and 55.1 ± 1.4% (P < 0.01), respectively. It also increased the total antioxidant capacity by 55.6 ± 0.1 and 49.2 ± 1.1% (P < 0.05), based on ABTS and FRAP assay results, respectively. Consistently, it increased the activities and gene expression of major antioxidant enzymes by at least 35 and 40% (P < 0.05), respectively. Furthermore, DHA promoted mitochondrial functions and biogenesis. These data suggested that DHA's antioxidant activity can be attributed to its enhancement of mitochondrial functions and biogenesis. This study may shed light on the molecular mechanisms underlying DHA's function in improving resistance to and relieving the symptoms of chronic disease.
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Affiliation(s)
- Guiling Li
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
- Fujian Marine Functional Food Engineering Technology Research Center, Xiamen, Fujian 361021, P. R. China
| | - Yuanyuan Li
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
- Fujian Marine Functional Food Engineering Technology Research Center, Xiamen, Fujian 361021, P. R. China
| | - Baoping Xiao
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
- Fujian Marine Functional Food Engineering Technology Research Center, Xiamen, Fujian 361021, P. R. China
| | - Dongyue Cui
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
- Fujian Marine Functional Food Engineering Technology Research Center, Xiamen, Fujian 361021, P. R. China
| | - Yanqi Lin
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
- Fujian Marine Functional Food Engineering Technology Research Center, Xiamen, Fujian 361021, P. R. China
| | - Jun Zeng
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
- Fujian Marine Functional Food Engineering Technology Research Center, Xiamen, Fujian 361021, P. R. China
| | - Jian Li
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
- Fujian Marine Functional Food Engineering Technology Research Center, Xiamen, Fujian 361021, P. R. China
| | - Min-Jie Cao
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
- Fujian Marine Functional Food Engineering Technology Research Center, Xiamen, Fujian 361021, P. R. China
| | - Jingwen Liu
- College of Food and Biological Engineering, Jimei University, No. 43 Yindou Road, Jimei District, Xiamen, Fujian 361021, P. R. China
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Xu Y, Zhi F, Mao J, Peng Y, Shao N, Balboni G, Yang Y, Xia Y. δ-opioid receptor activation protects against Parkinson's disease-related mitochondrial dysfunction by enhancing PINK1/Parkin-dependent mitophagy. Aging (Albany NY) 2020; 12:25035-25059. [PMID: 33197884 PMCID: PMC7803568 DOI: 10.18632/aging.103970] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 07/31/2020] [Indexed: 04/11/2023]
Abstract
Our previous studies have shown that the δ-opioid receptor (DOR) is an important neuroprotector via the regulation of PTEN-induced kinase 1 (PINK1), a mitochondria-related molecule, under hypoxic and MPP+ insults. Since mitochondrial dysfunctions are observed in both hypoxia and MPP+ insults, this study further investigated whether DOR is cytoprotective against these insults by targeting mitochondria. Through comparing DOR-induced responses to hypoxia versus MPP+-induced parkinsonian insult in PC12 cells, we found that both hypoxia and MPP+ caused a collapse of mitochondrial membrane potential and severe mitochondrial dysfunction. In sharp contrast to its inappreciable effect on mitochondria in hypoxic conditions, DOR activation with UFP-512, a specific agonist, significantly attenuated the MPP+-induced mitochondrial injury. Mechanistically, DOR activation effectively upregulated PINK1 expression and promoted Parkin's mitochondrial translocation and modification, thus enhancing the PINK1-Parkin mediated mitophagy. Either PINK1 knockdown or DOR knockdown largely interfered with the DOR-mediated mitoprotection in MPP+ conditions. Moreover, there was a major difference between hypoxia versus MPP+ in terms of the regulation of mitophagy with hypoxia-induced mitophagy being independent from DOR-PINK1 signaling. Taken together, our novel data suggest that DOR activation is neuroprotective against parkinsonian injury by specifically promoting mitophagy in a PINK1-dependent pathway and thus attenuating mitochondrial damage.
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Affiliation(s)
- Yuan Xu
- Department of Neurosurgery, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
- Modern Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Department of Aeronautics and Astronautics, Fudan University, Shanghai, China
| | - Feng Zhi
- Department of Neurosurgery, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
- Modern Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Jiahao Mao
- Department of Neurosurgery, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
- Modern Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Ya Peng
- Department of Neurosurgery, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Naiyuan Shao
- Department of Neurosurgery, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Gianfranco Balboni
- Department of Life and Environment Sciences, University of Cagliari, Cagliari, Italy
| | - Yilin Yang
- Department of Neurosurgery, The First People’s Hospital of Changzhou, Changzhou, Jiangsu, China
- Modern Medical Research Center, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Ying Xia
- Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Department of Aeronautics and Astronautics, Fudan University, Shanghai, China
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12
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Feng D, Wang Z, Zhao Y, Li Y, Liu D, Chen Z, Ning S, Hu Y, Yao J, Tian X. circ-PRKCB acts as a ceRNA to regulate p66Shc-mediated oxidative stress in intestinal ischemia/reperfusion. Theranostics 2020; 10:10680-10696. [PMID: 32929374 PMCID: PMC7482802 DOI: 10.7150/thno.44250] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 08/17/2020] [Indexed: 12/21/2022] Open
Abstract
Background: Oxidative stress has emerged as an essential factor in the pathogenesis of intestinal ischemia/reperfusion (I/R) injury. The adaptor protein p66Shc is a key regulator of reactive oxygen species (ROS) generation and a mediator of I/R damage in the intestine, but the upstream mechanisms that directly regulate p66Shc expression during intestinal I/R remain largely unknown. Recent studies have suggested that noncoding RNAs, such as circular RNAs (circRNAs), are important players in physiological and pathological processes based on their versatile regulatory roles in gene expression. The aim of this study was to elucidate the contribution of p66Shc to oxidative damage in intestinal I/R and to investigate the regulation of p66Shc by circRNA sponges. Methods: Intestinal I/R was induced in mice via superior mesenteric artery (SMA) occlusion. A miR-339-5p agomir or circ-protein kinase C beta (PRKCB) siRNA was injected intravenously before I/R challenge. In addition, Caco-2 cells were subjected to hypoxia/reoxygenation (H/R) in vitro to simulate an in vivo I/R model. Results:In vitro, p66Shc deficiency significantly reduced H/R-induced ROS overproduction by attenuating mitochondrial superoxide anion (O2-) levels, suppressing NADPH oxidase activity and enhancing antioxidant enzyme expression. Moreover, miR-339-5p was identified to directly regulate p66Shc expression in the intestine. Furthermore, we found that a circRNA transcribed from the PRKCB gene, named circ-PRKCB, acted as an endogenous miR-339-5p sponge to regulate p66Shc expression. circ-PRKCB silencing or miR-339-5p overexpression significantly downregulated p66Shc expression and attenuated oxidative stress levels and I/R injury in vivo and in vitro. Notably, the increased circ-PRKCB levels and decreased miR-339-5p levels associated with murine intestinal I/R were consistent with those in patients with intestinal infarction. Conclusions: Our findings reveal a crucial role for the circ-PRKCB/miR-339-5p/p66Shc signaling pathway in regulating oxidative stress in the I/R intestine. This pathway may be a potential therapeutic target for intestinal I/R injury.
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13
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Zhao Y, Wang Z, Zhou J, Feng D, Li Y, Hu Y, Zhang F, Chen Z, Wang G, Ma X, Tian X, Yao J. LncRNA Mical2/miR-203a-3p sponge participates in epithelial-mesenchymal transition by targeting p66Shc in liver fibrosis. Toxicol Appl Pharmacol 2020; 403:115125. [PMID: 32659284 DOI: 10.1016/j.taap.2020.115125] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 06/18/2020] [Accepted: 06/20/2020] [Indexed: 12/13/2022]
Abstract
Epithelial-mesenchymal transition (EMT) is regulated by reactive oxygen species (ROS) in liver fibrosis. p66Shc is a redox enzyme, but its role of EMT is unclear in liver fibrosis. Long noncoding RNAs (lncRNAs) have been implicated as important regulators in numerous physiological and pathological processes and generally acting as a microRNA (miRNA) sponge to regulate gene expression. The aim of the current study was to evaluate the contribution of p66Shc to EMT in liver fibrosis and the regulation of p66Shc by lncRNA sponge. In vivo, p66Shc silencing prevented carbon tetrachloride (CCl4)-induced EMT as evidenced by the upregulation of E-cadherin, downregulation of Vimentin and N-cadherin, and inhibition of oxidative stress and extracellular matrix (ECM) components. Moreover, in vitro, TGF-β1 significantly enhanced ECM components, as well as the development of the EMT phenotype. These effects were abrogated by p66Shc downregulation and aggravated by p66Shc overexpression. Mechanistically, p66Shc contributed to EMT via mediating ROS, as evidenced by p66Shc downregulation inhibiting EMT under exogenous hydrogen peroxide (H2O2) stimulation. Furthermore, we found that molecule interacting with CasL2 (Mical2) lncRNA functioned as an endogenous miR-203a-3p sponge to regulate p66Shc expression. Both Mical2 silencing and miR-203a-3p agomiR treatment downregulated p66Shc expression, thus suppressing EMT in vivo and in vitro. Notably, the increased p66Shc and Mical2 levels and decreased miR-203a-3p levels in murine fibrosis were consistent with those in patients with liver fibrosis. In sum, our study reveals that p66Shc is critical for liver fibrosis and that Mical2, miR-203a-3p and p66Shc compose a novel regulatory pathway in liver fibrosis.
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Affiliation(s)
- Yan Zhao
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Zhecheng Wang
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Junjun Zhou
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Dongcheng Feng
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Yang Li
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Yan Hu
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Feng Zhang
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Zhao Chen
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Guangzhi Wang
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Xiaodong Ma
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China
| | - Xiaofeng Tian
- Department of General Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China.
| | - Jihong Yao
- Department of Pharmacology, Dalian Medical University, Dalian 116044, China.
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14
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Costiniti V, Bomfim GH, Li Y, Mitaishvili E, Ye ZW, Zhang J, Townsend DM, Giacomello M, Lacruz RS. Mitochondrial Function in Enamel Development. Front Physiol 2020; 11:538. [PMID: 32547417 PMCID: PMC7274036 DOI: 10.3389/fphys.2020.00538] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/30/2020] [Indexed: 12/11/2022] Open
Abstract
Enamel is the most calcified tissue in vertebrates. Enamel formation and mineralization is a two-step process that is mediated by ameloblast cells during their secretory and maturation stages. In these two stages, ameloblasts are characterized by different morphology and function, which is fundamental for proper mineral growth in the extracellular space. Ultrastructural studies have shown that the mitochondria in these cells localize to different subcellular regions in both stages. However, limited knowledge is available on the role/s of mitochondria in enamel formation. To address this issue, we analyzed mitochondrial biogenesis and respiration, as well as the redox status of rat primary enamel cells isolated from the secretory and maturation stages. We show that maturation stage cells have an increased expression of PGC1α, a marker of mitochondrial biogenesis, and of components of the electron transport chain. Oxygen consumption rate (OCR), a proxy for mitochondrial function, showed a significant increase in oxidative phosphorylation during the maturation stage, promoting ATP production. The GSH/GSSG ratio was lower in the maturation stage, indicative of increased oxidation. Because higher oxidative phosphorylation can lead to higher ROS production, we tested if ROS affected the expression of AmelX and Enam genes that are essential for enamel formation. The ameloblast cell line LS8 treated with H2O2 to promote ROS elicited significant expression changes in AmelX and Enam. Our data highlight important metabolic and physiological differences across the two enamel stages, with higher ATP levels in the maturation stage indicative of a higher energy demand. Besides these metabolic shifts, it is likely that the enhanced ETC function results in ROS-mediated transcriptional changes.
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Affiliation(s)
- Veronica Costiniti
- College of Dentistry, Department of Molecular Pathobiology, New York University, New York, NY, United States
| | - Guilherme H Bomfim
- College of Dentistry, Department of Molecular Pathobiology, New York University, New York, NY, United States
| | - Yi Li
- College of Dentistry, Department of Molecular Pathobiology, New York University, New York, NY, United States
| | - Erna Mitaishvili
- College of Dentistry, Department of Molecular Pathobiology, New York University, New York, NY, United States
| | - Zhi-Wei Ye
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, United States
| | - Jie Zhang
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, United States
| | - Danyelle M Townsend
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - Marta Giacomello
- Department of Biology, University of Padova, Padua, Italy.,Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Rodrigo S Lacruz
- College of Dentistry, Department of Molecular Pathobiology, New York University, New York, NY, United States
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15
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Protective effects of carnosic acid on retinal ganglion cells in acute ocular hypertension rats. Int Ophthalmol 2020; 40:1869-1878. [PMID: 32277323 DOI: 10.1007/s10792-020-01359-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 03/28/2020] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To observe the protective effects of carnosic acid on rat retinal ganglion cells (RGCs) among acute ocular hypertension rats. METHODS Sixty male SPF (specific-pathogen-free) SD rats (10 weeks) were randomly assigned to untreated group, carnosic-acid-treated group and hypertensive group with 20 rats for each. The acute ocular hypertension animal model was induced by the perfusion of normal saline solution into anterior chamber of eyes to elevate the intraocular pressure (IOP) to 110 mmHg for 60 min in the rats of the carnosic-acid-treated group and hypertensive group. Then, the carnosic acid dissolving in dimethyl sulfoxide (DMSO) was intraperitoneally injected for consecutive 7 days in the carnosic-acid-treated group, and only DMSO was used in the same way in the hypertensive group. The rats were killed 2 weeks after experiment, and retinal sections were prepared for histopathological and apoptotic retinal ganglion cells (RGCs) examination by hemotoxylin and eosin staining and TUNEL staining. Use immunofluorescence employed to examine the survival of RGCs. This study protocol was approved by the Ethic Committee for Experimental Animal of Three Gorges University. RESULTS The retinal morphology and structure were clear in the untreated group. The edema of retinal tissue, loosely arranged RGCs and swollen nucleus were seen in the hypertensive group. In the carnosic-acid-treated group, the retinal morphology and structure were regular. The retinal nerve fiber layer (RNFL) thickness was (32.96 ± 1.63), (58.96 ± 1.57) and (50.11 ± 2.37) μm, and the apoptotic cell number was (6.92 ± 2.96), (29.85 ± 6.40) and (14.69 ± 2.98)/field, and the survived cell number was (2363.17 ± 148.45), (1308.67 ± 106.02) and (1614.17 ± 96.39)/0.235 mm2 in the untreated group, hypertensive group and carnosic-acid-treated group, respectively, showing significant differences among groups (F = 339.284, 81.583, 122.68, all at P < 0.01). Compared with the untreated group, the RNFL thickness was thickened, the number of apoptotic RGCs was much more, and the number of survived RGCs was decreased in the hypertensive group. In the carnosic-acid-treated group, the RNFL thickness was thinner, the number of apoptotic RGCs was reduced, and the number of survived RGCs was increased in comparison with the untreated group (all at P < 0.01). CONCLUSIONS Carnosic acid plays a protective effect on RGCs by inhibiting the cell apoptosis in acute ocular hypertension rats.
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16
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Zhang Y, Wang C, Lu J, Jin Y, Xu C, Meng Q, Liu Q, Dong D, Ma X, Liu K, Sun H. Targeting of miR-96-5p by catalpol ameliorates oxidative stress and hepatic steatosis in LDLr-/- mice via p66shc/cytochrome C cascade. Aging (Albany NY) 2020; 12:2049-2069. [PMID: 32023549 PMCID: PMC7041734 DOI: 10.18632/aging.102721] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 01/02/2020] [Indexed: 12/12/2022]
Abstract
Hepatic steatosis and oxidative stress are considered to be the sequential steps in the development of non-alcoholic fatty liver disease (NAFLD). We previously found that catalpol, an iridoid glucoside extracted from the root of Romania glutinosa L, protected against diabetes-induced hepatic oxidative stress. Here, we found that the increased expression of p66shc was observed in NAFLD models and catalpol could inhibit p66shc expression to ameliorate NAFLD effectively. However, the underlying mechanisms remained unknown. The aim of the present study was to investigate the p66shc-targeting miRNAs in regulating oxidative stress and hepatic steatosis, also the mechanisms of catalpol inhibiting NAFLD. We found that the effects of catalpol inhibiting hepatic oxidative stress and steasis are dependent on inhibiting P66Shc expression. In addition, miR-96-5p was able to suppress p66shc/cytochrome C cascade via targeting p66shc mRNA 3’UTR, and catalpol could lead to suppression of NAFLD via upregulating miR-96-5p level. Thus, catalpol was effective in ameliorating NAFLD, and miR-96-5p/p66shc/cytochrome C cascade might be a potential target.
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Affiliation(s)
- Yukun Zhang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Changyuan Wang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Jiawei Lu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Yue Jin
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Canyao Xu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Qiang Meng
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Qi Liu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Deshi Dong
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Xiaodong Ma
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Kexin Liu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Huijun Sun
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
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17
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Oke SL, Sohi G, Hardy DB. Perinatal protein restriction with postnatal catch-up growth leads to elevated p66Shc and mitochondrial dysfunction in the adult rat liver. Reproduction 2020; 159:27-39. [PMID: 31689235 PMCID: PMC6933810 DOI: 10.1530/rep-19-0188] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 11/05/2019] [Indexed: 12/14/2022]
Abstract
Epidemiological data suggest an inverse relationship between birth weight and long-term metabolic deficits, which is exacerbated by postnatal catch-up growth. We have previously demonstrated that rat offspring subject to maternal protein restriction (MPR) followed by catch-up growth exhibit impaired hepatic function and ER stress. Given that mitochondrial dysfunction is associated with various metabolic pathologies, we hypothesized that altered expression of p66Shc, a gatekeeper of oxidative stress and mitochondrial function, contributes to the hepatic defects observed in MPR offspring. To test this hypothesis, pregnant Wistar rats were fed a control (20% protein) diet or an isocaloric low protein (8%; LP) diet throughout gestation. Offspring born to control dams received a control diet in postnatal life, while MPR offspring remained on a LP diet (LP1) or received a control diet post weaning (LP2) or at birth (LP3). At four months, LP2 offspring exhibited increased protein abundance of both p66Shc and the cis-trans isomerase PIN1. This was further associated with aberrant markers of oxidative stress (i.e. elevated 4-HNE, SOD1 and SOD2, decreased catalase) and aerobic metabolism (i.e., increased phospho-PDH and LDHa, decreased complex II, citrate synthase and TFAM). We further demonstrated that tunicamycin-induced ER stress in HepG2 cells led to increased p66Shc protein abundance, suggesting that ER stress may underlie the programmed effects observed in vivo. In summary, because these defects are exclusive to adult LP2 offspring, it is possible that a low protein diet during perinatal life, a period of liver plasticity, followed by catch-up growth is detrimental to long-term mitochondrial function.
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Affiliation(s)
- Shelby L Oke
- The Children’s Health Research Institute, London, Ontario, Canada
- Lawson Health Research Institute, London, Ontario, Canada
- Department of Obstetrics and Gynaecology, London, Ontario, Canada
- Department of Physiology and Pharmacology, London, Ontario, Canada
- The University of Western Ontario, London, Ontario, Canada
| | - Gurjeev Sohi
- Department of Physiology and Pharmacology, London, Ontario, Canada
- The University of Western Ontario, London, Ontario, Canada
| | - Daniel B Hardy
- The Children’s Health Research Institute, London, Ontario, Canada
- Lawson Health Research Institute, London, Ontario, Canada
- Department of Obstetrics and Gynaecology, London, Ontario, Canada
- Department of Physiology and Pharmacology, London, Ontario, Canada
- The University of Western Ontario, London, Ontario, Canada
- Correspondence should be addressed to D B Hardy;
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18
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Modulation of Obesity and Insulin Resistance by the Redox Enzyme and Adaptor Protein p66 Shc. Int J Mol Sci 2019; 20:ijms20040985. [PMID: 30813483 PMCID: PMC6412263 DOI: 10.3390/ijms20040985] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 02/15/2019] [Accepted: 02/21/2019] [Indexed: 12/27/2022] Open
Abstract
Initially reported as a longevity-related protein, the 66 kDa isoform of the mammalian Shc1 locus has been implicated in several metabolic pathways, being able to act both as an adaptor protein and as a redox enzyme capable of generating reactive oxygen species (ROS) when it localizes to the mitochondrion. Ablation of p66Shc has been shown to be protective against obesity and the insurgence of insulin resistance, but not all the studies available in the literature agree on these points. This review will focus in particular on the role of p66Shc in the modulation of glucose homeostasis, obesity, body temperature, and respiration/energy expenditure. In view of the obesity and diabetes epidemic, p66Shc may represent a promising therapeutic target with enormous implications for human health.
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19
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Zhang T, Zhao X, Hai R, Li R, Zhang W, Zhang J. p66Shc is associated with hydrogen peroxide-induced oxidative stress in preimplantation sheep embryos. Mol Reprod Dev 2019; 86:342-350. [PMID: 30636355 DOI: 10.1002/mrd.23110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 01/08/2019] [Indexed: 01/14/2023]
Abstract
The low efficiency of in vitro embryo production is associated with oxidative stress induced by suboptimal culture conditions. p66Shc is a 66-kDa protein of the ShcA (Src homologous-collagen homolog) adaptor protein family, which is involved in signaling pathways involved in oxidative stress regulation, apoptosis induction, and aging. However, the functional role of p66Shc during the preimplantation development of sheep embryos is not understood. Our results showed that early-cleavage (≤28 hr) embryos had a higher developmental potential than late-cleavage (>28 hr) embryos. The poor quality of these late-cleavage embryos was associated with increased the transcripts and protein of p66Shc and decreased mitochondrial activity. In addition, exogenous hydrogen peroxide-induced oxidative stress significantly increased p66Shc protein abundance and suppressed embryonic development, which was ameliorated by antioxidant treatment. Notably, oxidative stress induced the nuclear localization of p66Shc and phosphorylated (Ser-36) p66Shc. Collectively, these observations suggest that p66Shc may be playing an important role in the regulation of oxidative stress during the preimplantation development of sheep embryos.
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Affiliation(s)
- Tong Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.,Inner Mongolia Autonomous Region Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.,Department of Basic Medicine, School of Medicine, Shanxi Datong University, Datong, Shanxi, China
| | - Xiaofang Zhao
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.,Department of Basic Medicine, School of Medicine, Shanxi Datong University, Datong, Shanxi, China
| | - Rihan Hai
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.,Inner Mongolia Autonomous Region Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Ruilan Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.,Inner Mongolia Autonomous Region Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.,Department of Basic Medicine, School of Medicine, Shanxi Datong University, Datong, Shanxi, China
| | - Wenguang Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.,Inner Mongolia Autonomous Region Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Jiaxin Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.,Inner Mongolia Autonomous Region Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
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20
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Choi SJ, Piao S, Nagar H, Jung SB, Kim S, Lee I, Kim SM, Song HJ, Shin N, Kim DW, Irani K, Jeon BH, Park JW, Kim CS. Isocitrate dehydrogenase 2 deficiency induces endothelial inflammation via p66sh-mediated mitochondrial oxidative stress. Biochem Biophys Res Commun 2018; 503:1805-1811. [PMID: 30072100 DOI: 10.1016/j.bbrc.2018.07.117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 07/23/2018] [Indexed: 01/01/2023]
Abstract
Isocitrate dehydrogenase 2 (IDH2) is an essential enzyme in the mitochondrial antioxidant system, which produces nicotinamide adenine dinucleotide phosphate, and thereby defends against oxidative stress. We have shown that IDH2 downregulation results in mitochondrial dysfunction and reactive oxygen species (ROS) generation in mouse endothelial cells. The redox enzyme p66shc is a key factor in regulating the level of ROS in endothelial cells. In this study, we hypothesized that IDH2 knockdown-induced mitochondrial dysfunction stimulates endothelial inflammation, which might be regulated by p66shc-mediated oxidative stress. Our results showed that IDH2 downregulation led to mitochondrial dysfunction by decreasing the expression of mitochondrial oxidative phosphorylation complexes I, II, and IV, reducing oxygen consumption, and depolarizing mitochondrial membrane potential in human umbilical vein endothelial cells (HUVECs). The dysfunction not only increased mitochondrial ROS levels but also activated p66shc expression in HUVECs and IDH2 knockout mice. IDH2 deficiency increased intercellular adhesion molecule (ICAM)-1 expression and mRNA levels of pro-inflammatory cytokines (tumor necrosis factor [TNF]-α, and interleukin [IL]-1β) in HUVECs. The mRNA expression of ICAM-1 in endothelial cells and plasma levels of TNF-α and IL-1β were also markedly elevated in IDH2 knockout mice. However, p66shc knockdown rescued IDH2 deficiency-induced mitochondrial ROS levels, monocyte adhesion, ICAM-1, TNF-α, and IL-1β expression in HUVECs. These findings suggest that IDH2 deficiency induced endothelial inflammation via p66shc-mediated mitochondrial oxidative stress.
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Affiliation(s)
- Su-Jeong Choi
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Shuyu Piao
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Harsha Nagar
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Saet-Byel Jung
- Department of Endocrinology, School of Medicine, Chungnam National University, Daejeon, 301-721, Republic of Korea
| | - Seonhee Kim
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Ikjun Lee
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Sung-Min Kim
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Hee-Jung Song
- Department of Neurology, Chungnam National University Hospital, Daejeon, 301-721, Republic of Korea
| | - Nara Shin
- Department of Anatomy & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Dong Woon Kim
- Department of Anatomy & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Kaikobad Irani
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Byeong Hwa Jeon
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Jeen-Woo Park
- School of Life Sciences, College of Natural Science, Kyungpook National University, Taegu, 702-701, Republic of Korea.
| | - Cuk-Seong Kim
- Department of Physiology & Medical Science, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea.
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D'Onofrio N, Servillo L, Balestrieri ML. SIRT1 and SIRT6 Signaling Pathways in Cardiovascular Disease Protection. Antioxid Redox Signal 2018; 28:711-732. [PMID: 28661724 PMCID: PMC5824538 DOI: 10.1089/ars.2017.7178] [Citation(s) in RCA: 249] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 05/24/2017] [Indexed: 02/06/2023]
Abstract
SIGNIFICANCE Oxidative stress represents the common hallmark of pathological conditions associated with cardiovascular disease (CVD), including atherosclerosis, heart failure, hypertension, aging, diabetes, and other vascular system-related diseases. The sirtuin (SIRT) family, comprising seven proteins (SIRT1-SIRT7) sharing a highly conserved nicotinamide adenine dinucleotide (NAD+)-binding catalytic domain, attracted a great attention for the past few years as stress adaptor and epigenetic enzymes involved in the cellular events controlling aging-related disorder, cancer, and CVD. Recent Advances: Among sirtuins, SIRT1 and SIRT6 are the best characterized for their protective roles against inflammation, vascular aging, heart disease, and atherosclerotic plaque development. This latest role has been only recently unveiled for SIRT6. Of interest, in recent years, complex signaling networks controlled by SIRT1 and SIRT6 common to stress resistance, vascular aging, and CVD have emerged. CRITICAL ISSUES We provide a comprehensive overview of recent developments on the molecular signaling pathways controlled by SIRT1 and SIRT6, two post-translational modifiers proven to be valuable tools to dampen inflammation and oxidative stress at the cardiovascular level. FUTURE DIRECTIONS A deeper understanding of the epigenetic mechanisms through which SIRT1 and SIRT6 act in the signalings responsible for onset and development CVD is a prime scientific endeavor of the upcoming years. Multiple "omic" technologies will have widespread implications in understanding such mechanisms, speeding up the achievement of selective and efficient pharmacological modulation of sirtuins for future applications in the prevention and treatment of CVD. Antioxid. Redox Signal. 28, 711-732.
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Affiliation(s)
- Nunzia D'Onofrio
- Department of Biochemistry, Biophysics and General Pathology, School of Medicine and Surgery, Università degli Studi della Campania , Naples, Italy
| | - Luigi Servillo
- Department of Biochemistry, Biophysics and General Pathology, School of Medicine and Surgery, Università degli Studi della Campania , Naples, Italy
| | - Maria Luisa Balestrieri
- Department of Biochemistry, Biophysics and General Pathology, School of Medicine and Surgery, Università degli Studi della Campania , Naples, Italy
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Di Lisa F, Giorgio M, Ferdinandy P, Schulz R. New aspects of p66Shc in ischaemia reperfusion injury and other cardiovascular diseases. Br J Pharmacol 2017; 174:1690-1703. [PMID: 26990284 PMCID: PMC5446581 DOI: 10.1111/bph.13478] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 02/29/2016] [Accepted: 03/09/2016] [Indexed: 12/13/2022] Open
Abstract
Although reactive oxygen species (ROS) act as crucial factors in the onset and progression of a wide array of diseases, they are also involved in numerous signalling pathways related to cell metabolism, growth and survival. ROS are produced at various cellular sites, and it is generally agreed that mitochondria generate the largest amount, especially those in cardiomyocytes. However, the identification of the most relevant sites within mitochondria, the interaction among the various sources, and the events responsible for the increase in ROS formation under pathological conditions are still highly debated, and far from being clarified. Here, we review the information linking the adaptor protein p66Shc with cardiac injury induced by ischaemia and reperfusion (I/R), including the contribution of risk factors, such as metabolic syndrome and ageing. In response to several stimuli, p66Shc migrates into mitochondria where it catalyses electron transfer from cytochrome c to oxygen resulting in hydrogen peroxide formation. Deletion of p66Shc has been shown to reduce I/R injury as well as vascular abnormalities associated with diabetes and ageing. However, p66Shc-induced ROS formation is also involved in insulin signalling and might contribute to self-endogenous defenses against mild I/R injury. In addition to its role in physiological and pathological conditions, we discuss compounds and conditions that can modulate the expression and activity of p66Shc. LINKED ARTICLES This article is part of a themed section on Redox Biology and Oxidative Stress in Health and Disease. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.12/issuetoc.
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Affiliation(s)
- Fabio Di Lisa
- Department of Biomedical Sciences and CNR Neuroscience InstituteUniversity of PadovaPadovaItaly
| | - Marco Giorgio
- Department of Experimental OncologyInstitute of OncologyMilanItaly
| | - Peter Ferdinandy
- Department of Pharmacology and PharmacotherapySemmelweis UniversityBudapestHungary
- Pharmahungary GroupSzegedHungary
| | - Rainer Schulz
- Institut für PhysiologieJustus‐Liebig Universität GiessenGiessenGermany
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Abstract
Ischemic disorders, such as myocardial infarction, stroke, and peripheral vascular disease, are the most common causes of debilitating disease and death in westernized cultures. The extent of tissue injury relates directly to the extent of blood flow reduction and to the length of the ischemic period, which influence the levels to which cellular ATP and intracellular pH are reduced. By impairing ATPase-dependent ion transport, ischemia causes intracellular and mitochondrial calcium levels to increase (calcium overload). Cell volume regulatory mechanisms are also disrupted by the lack of ATP, which can induce lysis of organelle and plasma membranes. Reperfusion, although required to salvage oxygen-starved tissues, produces paradoxical tissue responses that fuel the production of reactive oxygen species (oxygen paradox), sequestration of proinflammatory immunocytes in ischemic tissues, endoplasmic reticulum stress, and development of postischemic capillary no-reflow, which amplify tissue injury. These pathologic events culminate in opening of mitochondrial permeability transition pores as a common end-effector of ischemia/reperfusion (I/R)-induced cell lysis and death. Emerging concepts include the influence of the intestinal microbiome, fetal programming, epigenetic changes, and microparticles in the pathogenesis of I/R. The overall goal of this review is to describe these and other mechanisms that contribute to I/R injury. Because so many different deleterious events participate in I/R, it is clear that therapeutic approaches will be effective only when multiple pathologic processes are targeted. In addition, the translational significance of I/R research will be enhanced by much wider use of animal models that incorporate the complicating effects of risk factors for cardiovascular disease. © 2017 American Physiological Society. Compr Physiol 7:113-170, 2017.
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Affiliation(s)
- Theodore Kalogeris
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Christopher P. Baines
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, USA
- Department of Biomedical Sciences, University of Missouri College of Veterinary Medicine, Columbia, Missouri, USA
| | - Maike Krenz
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, USA
| | - Ronald J. Korthuis
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, Missouri, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, USA
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24
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Curcumin ameliorates alveolar epithelial injury in a rat model of chronic obstructive pulmonary disease. Life Sci 2016; 164:1-8. [DOI: 10.1016/j.lfs.2016.09.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/01/2016] [Accepted: 09/02/2016] [Indexed: 11/23/2022]
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25
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Biasutto L, Azzolini M, Szabò I, Zoratti M. The mitochondrial permeability transition pore in AD 2016: An update. BIOCHIMICA ET BIOPHYSICA ACTA 2016; 1863:2515-30. [PMID: 26902508 DOI: 10.1016/j.bbamcr.2016.02.012] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 12/13/2022]
Abstract
Over the past 30years the mitochondrial permeability transition - the permeabilization of the inner mitochondrial membrane due to the opening of a wide pore - has progressed from being considered a curious artifact induced in isolated mitochondria by Ca(2+) and phosphate to a key cell-death-inducing process in several major pathologies. Its relevance is by now universally acknowledged and a pharmacology targeting the phenomenon is being developed. The molecular nature of the pore remains to this day uncertain, but progress has recently been made with the identification of the FOF1 ATP synthase as the probable proteic substrate. Researchers sharing this conviction are however divided into two camps: these believing that only the ATP synthase dimers or oligomers can form the pore, presumably in the contact region between monomers, and those who consider that the ring-forming c subunits in the FO sector actually constitute the walls of the pore. The latest development is the emergence of a new candidate: Spastic Paraplegia 7 (SPG7), a mitochondrial AAA-type membrane protease which forms a 6-stave barrel. This review summarizes recent developments of research on the pathophysiological relevance and on the molecular nature of the mitochondrial permeability transition pore. This article is part of a Special Issue entitled: Mitochondrial Channels edited by Pierre Sonveaux, Pierre Maechler and Jean-Claude Martinou.
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Affiliation(s)
- Lucia Biasutto
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121 Padova, Italy; University of Padova, Department of Biomedical Sciences, Viale G. Colombo 3, 35121 Padova, Italy
| | - Michele Azzolini
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121 Padova, Italy; University of Padova, Department of Biomedical Sciences, Viale G. Colombo 3, 35121 Padova, Italy
| | - Ildikò Szabò
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121 Padova, Italy; University of Padova, Department of Biology, Viale G. Colombo 3, 35121 Padova, Italy
| | - Mario Zoratti
- CNR Neuroscience Institute, Viale G. Colombo 3, 35121 Padova, Italy; University of Padova, Department of Biomedical Sciences, Viale G. Colombo 3, 35121 Padova, Italy.
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26
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Kong X, Guan J, Li J, Wei J, Wang R. P66 Shc-SIRT1 Regulation of Oxidative Stress Protects Against Cardio-cerebral Vascular Disease. Mol Neurobiol 2016; 54:5277-5285. [PMID: 27578018 DOI: 10.1007/s12035-016-0073-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 08/18/2016] [Indexed: 10/21/2022]
Abstract
Growing evidence shows that acute and chronic overproduction of reactive oxygen species (ROS) and increased oxidants under pathophysiologic circumstances are of vital importance in the development of cardio-cerebral vascular diseases (CCVDs). It has been revealed that the impact of ROS can be suppressed by sirtuin 1 (SIRT1), a member of the highly conserved nicotinamide adenine dinucleotide-dependent class III histone deacetylases through protecting endothelial cells from oxidative injury. Plenty of evidences indicate that p66Shc stimulates mitochondrial ROS generation through its oxidoreductase activity and plays a vital role in the pathophysiology of CCVDs. The link between SIRT and p66Shc, though not very clear yet, may be generally illustrated like this: SIRT1 negatively regulates the expression of p66Shc in transcriptional level. In this review, the authors aimed to discuss the link between the pathogenesis of CCVDs, the regulation of ROS, the interrelation between SIRT1 and p66Shc, and the protective effect of the proper regulation of p66Shc/SIRT1 on CCVDs. The imbalance between the elimination and production of ROS can lead to oxidative stress (OS). More and more evidence suggest that ROS pathological overproduction is closely connected to the genesis and growth of CCVDs. P66shc is a gene that controls ROS level, apoptosis induction, and lifespan. Lots of evidence also indicate a role for SIRT1 mediating OS responses through several ways including directly deacetylating some transcription factors that control anti-OS genes. SIRT1 downregulation can lead to a decreased deacetylation of p66shc gene promoter and can then result in p66shc transcription. SIRT1 binds to the promoter of p66Shc where it can deacetylate histone H3, which weakens the transcription and translation of p66shc.
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Affiliation(s)
- Xiangyi Kong
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China.,Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Harvard University, 55 Fruit Street, Boston, MA, 02114-3117, USA
| | - Jian Guan
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Jun Li
- Department of Neurosurgery, Tangshan Gongren Hospital, Hebei Medical University, 27 Wenhua Road, Tangshan, 063000, People's Republic of China
| | - Junji Wei
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China
| | - Renzhi Wang
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, People's Republic of China.
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Lettieri Barbato D, Aquilano K. Feast and famine: Adipose tissue adaptations for healthy aging. Ageing Res Rev 2016; 28:85-93. [PMID: 27223996 DOI: 10.1016/j.arr.2016.05.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/16/2016] [Accepted: 05/16/2016] [Indexed: 12/18/2022]
Abstract
Proper adipose tissue function controls energy balance with favourable effects on metabolic health and longevity. The molecular and metabolic asset of adipose tissue quickly and dynamically readapts in response to nutrient fluctuations. Once delivered into cells, nutrients are managed by mitochondria that represent a key bioenergetics node. A persistent nutrient overload generates mitochondrial exhaustion and uncontrolled reactive oxygen species ((mt)ROS) production. In adipocytes, metabolic/molecular reorganization is triggered culminating in the acquirement of a hypertrophic and hypersecretory phenotype that accelerates aging. Conversely, dietary regimens such as caloric restriction or time-controlled fasting endorse mitochondrial functionality and (mt)ROS-mediated signalling, thus promoting geroprotection. In this perspective view, we argued some important molecular and metabolic aspects related to adipocyte response to nutrient stress. Finally we delineated hypothetical routes by which molecularly and metabolically readapted adipose tissue promotes healthy aging.
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Giorgio M, Stendardo M, Migliaccio E, Pelicci PG. P66SHC deletion improves fertility and progeric phenotype of late-generation TERC-deficient mice but not their short lifespan. Aging Cell 2016; 15:446-54. [PMID: 26968134 PMCID: PMC4854904 DOI: 10.1111/acel.12448] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2015] [Indexed: 11/30/2022] Open
Abstract
Oxidative stress and telomere attrition are considered the driving factors of aging. As oxidative damage to telomeric DNA favors the erosion of chromosome ends and, in turn, telomere shortening increases the sensitivity to pro-oxidants, these two factors may trigger a detrimental vicious cycle. To check whether limiting oxidative stress slows down telomere shortening and related progeria, we have investigated the effect of p66SHC deletion, which has been shown to reduce oxidative stress and mitochondrial apoptosis, on late-generation TERC (telomerase RNA component)-deficient mice having short telomeres and reduced lifespan. Double mutant (TERC(-/-) p66SHC(-/-) ) mice were generated, and their telomere length, fertility, and lifespan investigated in different generations. Results revealed that p66SHC deletion partially rescues sterility and weight loss, as well as organ atrophy, of TERC-deficient mice, but not their short lifespan and telomere erosion. Therefore, our data suggest that p66SHC-mediated oxidative stress and telomere shortening synergize in some tissues (including testes) to accelerate aging; however, early mortality of late-generation mice seems to be independent of any link between p66SHC-mediated oxidative stress and telomere attrition.
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Affiliation(s)
- Marco Giorgio
- Experimental Oncology Department; European Institute of Oncology; Via Ripamonti 435 20141 Milan Italy
| | - Massimo Stendardo
- Experimental Oncology Department; European Institute of Oncology; Via Ripamonti 435 20141 Milan Italy
| | - Enrica Migliaccio
- Experimental Oncology Department; European Institute of Oncology; Via Ripamonti 435 20141 Milan Italy
| | - Pier Giuseppe Pelicci
- Experimental Oncology Department; European Institute of Oncology; Via Ripamonti 435 20141 Milan Italy
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29
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Ciciliot S, Albiero M, Menegazzo L, Poncina N, Scattolini V, Danesi A, Pagnin E, Marabita M, Blaauw B, Giorgio M, Trinei M, Foletto M, Prevedello L, Nitti D, Avogaro A, Fadini GP. p66Shc deletion or deficiency protects from obesity but not metabolic dysfunction in mice and humans. Diabetologia 2015; 58:2352-60. [PMID: 26122877 DOI: 10.1007/s00125-015-3667-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 05/26/2015] [Indexed: 10/23/2022]
Abstract
AIMS/HYPOTHESIS Oxygen radicals generated by p66Shc drive adipogenesis, but contradictory data exist on the role of p66Shc in the development of obesity and the metabolic syndrome. We herein explored the relationships among p66Shc, adipose tissue remodelling and glucose metabolism using mouse models and human adipose tissue samples. METHODS In wild-type (WT), leptin-deficient (ob/ob), p66Shc(-/-) and p66Shc(-/-) ob/ob mice up to 30 weeks of age, we analysed body weight, subcutaneous and visceral adipose tissue histopathology, glucose tolerance and insulin sensitivity, and liver and muscle fat accumulation. A group of mice on a high fat diet (HFD) was also analysed. A parallel study was conducted on adipose tissue collected from patients undergoing elective surgery. RESULTS We found that p66Shc(-/-) mice were slightly leaner than WT mice, and p66Shc(-/-) ob/ob mice became less obese than ob/ob mice. Despite their lower body weight, p66Shc(-/-) mice accumulated ectopic fat in the liver and muscles, and were glucose intolerant and insulin resistant. Features of adverse adipose tissue remodelling induced by obesity, including adipocyte enlargement, apoptosis, inflammation and perfusion were modestly and transiently improved by p66Shc (also known as Shc1) deletion. After 12 weeks of the HFD, p66Shc(-/-) mice were leaner than but equally glucose intolerant and insulin resistant compared with WT mice. In 77 patients, we found a direct correlation between BMI and p66Shc protein levels. Patients with low p66Shc levels were less obese, but were not protected from other metabolic syndrome features (diabetes, dyslipidaemia and hypertension). CONCLUSIONS/INTERPRETATION In mice and humans, reduced p66Shc levels protect from obesity, but not from ectopic fat accumulation, glucose intolerance and insulin resistance.
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Affiliation(s)
- Stefano Ciciliot
- Department of Medicine, University of Padua, Via Giustiniani, 2, 35128, Padua, Italy
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Mattia Albiero
- Department of Medicine, University of Padua, Via Giustiniani, 2, 35128, Padua, Italy
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Lisa Menegazzo
- Department of Medicine, University of Padua, Via Giustiniani, 2, 35128, Padua, Italy
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Nicol Poncina
- Department of Medicine, University of Padua, Via Giustiniani, 2, 35128, Padua, Italy
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Valentina Scattolini
- Department of Medicine, University of Padua, Via Giustiniani, 2, 35128, Padua, Italy
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Andrea Danesi
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Elisa Pagnin
- Department of Medicine, University of Padua, Via Giustiniani, 2, 35128, Padua, Italy
| | | | - Bert Blaauw
- Venetian Institute of Molecular Medicine, Padua, Italy
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Marco Giorgio
- European Institute of Oncology, IFOM-IEO Campus, Milan, Italy
| | - Mirella Trinei
- European Institute of Oncology, IFOM-IEO Campus, Milan, Italy
| | - Mirto Foletto
- Department of Surgical, Oncologic Gastroenterologic Sciences, University of Padua, Padua, Italy
| | - Luca Prevedello
- Department of Surgical, Oncologic Gastroenterologic Sciences, University of Padua, Padua, Italy
| | - Donato Nitti
- Department of Surgical, Oncologic Gastroenterologic Sciences, University of Padua, Padua, Italy
| | - Angelo Avogaro
- Department of Medicine, University of Padua, Via Giustiniani, 2, 35128, Padua, Italy
- Venetian Institute of Molecular Medicine, Padua, Italy
| | - Gian Paolo Fadini
- Department of Medicine, University of Padua, Via Giustiniani, 2, 35128, Padua, Italy.
- Venetian Institute of Molecular Medicine, Padua, Italy.
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Pinazo-Durán MD, Zanón-Moreno V, Gallego-Pinazo R, García-Medina JJ. Oxidative stress and mitochondrial failure in the pathogenesis of glaucoma neurodegeneration. PROGRESS IN BRAIN RESEARCH 2015; 220:127-53. [PMID: 26497788 DOI: 10.1016/bs.pbr.2015.06.001] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review focuses on oxidative stress and mitochondrial failure for understanding mechanisms of optic nerve damage in primary open-angle glaucoma. The chapter shows scientific evidence for the role of mitochondrial disbalance and reactive oxygen species in glaucoma neurodegeneration. Mitochondria regulate important cellular functions including reactive oxygen species generation and apoptosis. Mitochondrial alterations result from a wide variety of damaging sources. Reactive oxygen species formed by the mitochondria can act as signaling molecules, inducing lipid peroxidation and/or excitotoxicity with the result of cell lesion and death. Antioxidants may help to counteract oxidative stress and to promote neuroprotection. We provide information that may lead to a new way for diagnosing and treating glaucoma patients.
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Affiliation(s)
- Maria D Pinazo-Durán
- Ophthalmic Research Unit "Santiago Grisolía", University Hospital Dr. Peset, Valencia, Spain; Department of Surgery/Ophthalmology, Faculty of Medicine and Odontology, University of Valencia, Valencia, Spain.
| | - Vicente Zanón-Moreno
- Ophthalmic Research Unit "Santiago Grisolía", University Hospital Dr. Peset, Valencia, Spain; Department of Surgery/Ophthalmology, Faculty of Medicine and Odontology, University of Valencia, Valencia, Spain
| | - Roberto Gallego-Pinazo
- Ophthalmic Research Unit "Santiago Grisolía", University Hospital Dr. Peset, Valencia, Spain; Department of Ophthalmology, University and Polytechnic Hospital la Fe, Valencia, Spain
| | - José J García-Medina
- Ophthalmic Research Unit "Santiago Grisolía", University Hospital Dr. Peset, Valencia, Spain; Department of Ophthalmology, University Hospital Reina Sofia, Murcia, Spain; Department of Ophthalmology and Optometry, University of Murcia, Murcia, Spain
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31
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Giorgio M. Oxidative stress and the unfulfilled promises of antioxidant agents. Ecancermedicalscience 2015; 9:556. [PMID: 26284120 PMCID: PMC4531130 DOI: 10.3332/ecancer.2015.556] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Indexed: 12/14/2022] Open
Abstract
It is well known that aging and its associated diseases, including cancer, are triggered by oxidative damage to biological macromolecules. However, antioxidant compounds are still disappointingly distant from any clinical application, so that Jim Watson has declared that antioxidant supplementation may have caused more cancers than it has prevented Watson J ((2013) Oxidants, antioxidants and the current incurability of metastatic cancers Open Biol 3 DOI: 10.1098/rsob.120144). To clarify this paradox, here, we describe the mechanisms of oxidative stress focusing in particular on redox balance and physiological oxidative signals.
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Affiliation(s)
- Marco Giorgio
- Department of Experimental Oncology, Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
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32
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Protocatechuic Acid Prevents oxLDL-Induced Apoptosis by Activating JNK/Nrf2 Survival Signals in Macrophages. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:351827. [PMID: 26180584 PMCID: PMC4477133 DOI: 10.1155/2015/351827] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/12/2014] [Accepted: 09/19/2014] [Indexed: 11/18/2022]
Abstract
Protocatechuic acid (PCA), one of the main metabolites of complex polyphenols, exerts numerous biological activities including antiapoptotic, anti-inflammatory, and antiatherosclerotic effects. Oxidised LDL have atherogenic properties by damaging arterial wall cells and inducing p53-dependent apoptosis in macrophages. This study was aimed at defining the molecular mechanism responsible for the protective effects of PCA against oxidative and proapoptotic damage exerted by oxLDL in J774 A.1 macrophages. We found that the presence of PCA in cells treated with oxLDL completely inhibited the p53-dependent apoptosis induced by oxLDL. PCA decreased oxLDL-induced ROS overproduction and in particular prevented the early increase of ROS. This decrease seemed to be the main signal responsible for maintaining the intracellular redox homeostasis hindering the activation of p53 induced by ROS, p38MAPK, and PKCδ. Consequently the overexpression of the proapoptotic p53-target genes such as p66Shc protein did not occur. Finally, we demonstrated that PCA induced the activation of JNK, which, in turn, determined the increase of nuclear Nrf2, leading to inhibition of the early ROS overproduction. We concluded that the antiapoptotic mechanism of PCA was most likely related to the activation of the JNK-mediated survival signals that strengthen the cellular antioxidant defences rather than to the PCA antioxidant power.
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33
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Priami C, De Michele G, Cotelli F, Cellerino A, Giorgio M, Pelicci PG, Migliaccio E. Modelling the p53/p66Shc Aging Pathway in the Shortest Living Vertebrate Nothobranchius Furzeri. Aging Dis 2015; 6:95-108. [PMID: 25821638 DOI: 10.14336/ad.2014.0228] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 02/28/2014] [Indexed: 12/23/2022] Open
Abstract
Oxidative stress induced by reactive oxygen species (ROS) increases during lifespan and is involved in aging processes. The p66Shc adaptor protein is a master regulator of oxidative stress response in mammals. Ablation of p66Shc enhances oxidative stress resistance both in vitro and in vivo. Most importantly, it has been demonstrated that its deletion retards aging in mice. Recently, new insights in the molecular mechanisms involving p66Shc and the p53 tumor suppressor genes were given: a specific p66Shc/p53 transcriptional regulation pathway was uncovered as determinant in oxidative stress response and, likely, in aging. p53, in a p66Shc-dependent manner, negatively downregulates the expression of 200 genes which are involved in the G2/M transition of mitotic cell cycle and are downregulated during physiological aging. p66Shc modulates the response of p53 by activating a p53 isoform (p44/p53, also named Delta40p53). Based on these latest results, several developments are expected in the future, as the generation of animal models to study aging and the evaluation of the use of the p53/p66Shc target genes as biomarkers in aging related diseases. The aim of this review is to investigate the conservation of the p66Shc and p53 role in oxidative stress between fish and mammals. We propose to approach this study trough a new model organism, the annual fish Nothobranchius furzeri, that has been demonstrated to develop typical signs of aging, like in mammals, including senescence, neurodegeneration, metabolic disorders and cancer.
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Affiliation(s)
- Chiara Priami
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy. ; 3Dipartimento di Bioscienze, University of Milan, Italy
| | - Giulia De Michele
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy
| | | | | | - Marco Giorgio
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy
| | - Pier Giuseppe Pelicci
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy. ; 2Dipartimento di Medicina, Chirurgia e Odontoiatria, University of Milan, Italy
| | - Enrica Migliaccio
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy
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Paneni F, Costantino S, Cosentino F. Insulin resistance, diabetes, and cardiovascular risk. Curr Atheroscler Rep 2015; 16:419. [PMID: 24781596 DOI: 10.1007/s11883-014-0419-z] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Obesity and type 2 diabetes mellitus (T2DM) are major drivers of cardiovascular disease (CVD). The link between environmental factors, obesity, and dysglycemia indicates that progression to diabetes with time occurs along a "continuum", not necessarily linear, which involves different cellular mechanisms including alterations of insulin signaling, changes in glucose transport, pancreatic beta cell dysfunction, as well as the deregulation of key genes involved in oxidative stress and inflammation. The present review critically addresses key pathophysiological aspects including (i) hyperglycemia and insulin resistance as predictors of CV outcome, (ii) molecular mechanisms underpinning the progression of diabetic vascular complications despite intensive glycemic control, and (iii) stratification of CV risk, with particular emphasis on emerging biomarkers. Taken together, these important aspects may contribute to the development of promising diagnostic approaches as well as mechanism-based therapeutic strategies to reduce CVD burden in obese and diabetic subjects.
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Affiliation(s)
- Francesco Paneni
- Cardiology Unit, Department of Medicine, Karolinska University Hospital, Solna, 171 76, Stockholm, Sweden
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Frijhoff J, Dagnell M, Godfrey R, Ostman A. Regulation of protein tyrosine phosphatase oxidation in cell adhesion and migration. Antioxid Redox Signal 2014; 20:1994-2010. [PMID: 24111825 DOI: 10.1089/ars.2013.5643] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
SIGNIFICANCE Redox-regulated control of protein tyrosine phosphatases (PTPs) through inhibitory reversible oxidation of their active site is emerging as a novel and general mechanism for control of cell surface receptor-activated signaling. This mechanism allows for a previously unrecognized crosstalk between redox regulators and signaling pathways, governed by, for example, receptor tyrosine kinases and integrins, which control cell proliferation and migration. RECENT ADVANCES A large number of different molecules, in addition to hydrogen peroxide, have been found to induce PTP inactivation, including lipid peroxides, reactive nitrogen species, and hydrogen sulfide. Characterization of oxidized PTPs has identified different types of oxidative modifications that are likely to display differential sensitivity to various reducing systems. Accumulating evidence demonstrates that PTP oxidation occurs in a temporally and spatially restricted manner. Studies in cell and animal models indicate altered PTP oxidation in models of common diseases, such as cancer and metabolic/cardiovascular disease. Novel methods have appeared that allow characterization of global PTP oxidation. CRITICAL ISSUES As the understanding of the molecular and cellular biology of PTP oxidation is developing, it will be important to establish experimental procedures that allow analyses of PTP oxidation, and its regulation, in physiological and pathophysiological settings. Future studies should also aim to establish specific connections between various oxidants, specific PTPs, and defined signaling contexts. FUTURE DIRECTIONS Modulation of PTP activity still appears as a valid strategy for correction or inhibition of dys-regulated cell signaling. Continued studies on PTP oxidation might present yet unrecognized means to exploit this regulatory mechanism for pharmacological purposes.
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Affiliation(s)
- Jeroen Frijhoff
- 1 Department of Oncology-Pathology, Karolinska Institutet , Stockholm, Sweden
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Raimundo N. Mitochondrial pathology: stress signals from the energy factory. Trends Mol Med 2014; 20:282-92. [PMID: 24508276 DOI: 10.1016/j.molmed.2014.01.005] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 01/06/2014] [Accepted: 01/08/2014] [Indexed: 12/16/2022]
Abstract
Mitochondria are undergoing a renaissance. The cellular power plant is now recognized as a key cellular signaling platform. The signals released by mitochondria are currently an area of intense research. A complex network is emerging involving metabolic intermediates, the roles of the mitochondrial unfolded protein response, and the interaction of mitochondria with other organelles and with the cellular autophagic system. Despite the diversity of the perturbations leading to mitochondrial diseases, some emerging trends are apparent. The long-held notion that mitochondrial diseases result from decreased mitochondrial energy output has been challenged by new data showing that mitochondrial pathological signaling can cause disease irrespective of the energy output. This review proposes a novel integrative view of mitochondrial signaling in physiology and disease.
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Affiliation(s)
- Nuno Raimundo
- University Medical Center Goettingen, Institute for Cellular Biochemistry, Humboldtallee 23, Room 01.423, 37073 Goettingen, Germany.
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