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Thornton JA, Koc ZC, Sollars VE, Valentovic MA, Denvir J, Wilkinson J, Koc EC. Alcohol- and Low-Iron Induced Changes in Antioxidant and Energy Metabolism Associated with Protein Lys Acetylation. Int J Mol Sci 2024; 25:8344. [PMID: 39125916 PMCID: PMC11312970 DOI: 10.3390/ijms25158344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/19/2024] [Accepted: 07/26/2024] [Indexed: 08/12/2024] Open
Abstract
Understanding the role of iron in ethanol-derived hepatic stress could help elucidate the efficacy of dietary or clinical interventions designed to minimize liver damage from chronic alcohol consumption. We hypothesized that normal levels of iron are involved in ethanol-derived liver damage and reduced dietary iron intake would lower the damage caused by ethanol. We used a pair-fed mouse model utilizing basal Lieber-DeCarli liquid diets for 22 weeks to test this hypothesis. In our mouse model, chronic ethanol exposure led to mild hepatic stress possibly characteristic of early-stage alcoholic liver disease, seen as increases in liver-to-body weight ratios. Dietary iron restriction caused a slight decrease in non-heme iron and ferritin (FeRL) expression while it increased transferrin receptor 1 (TfR1) expression without changing ferroportin 1 (FPN1) expression. It also elevated protein lysine acetylation to a more significant level than in ethanol-fed mice under normal dietary iron conditions. Interestingly, iron restriction led to an additional reduction in nicotinamide adenine dinucleotide (NAD+) and NADH levels. Consistent with this observation, the major mitochondrial NAD+-dependent deacetylase, NAD-dependent deacetylase sirtuin-3 (SIRT3), expression was significantly reduced causing increased protein lysine acetylation in ethanol-fed mice at normal and low-iron conditions. In addition, the detection of superoxide dismutase 1 and 2 levels (SOD1 and SOD2) and oxidative phosphorylation (OXPHOS) complex activities allowed us to evaluate the changes in antioxidant and energy metabolism regulated by ethanol consumption at normal and low-iron conditions. We observed that the ethanol-fed mice had mild liver damage associated with reduced energy and antioxidant metabolism. On the other hand, iron restriction may exacerbate certain activities of ethanol further, such as increased protein lysine acetylation and reduced antioxidant metabolism. This metabolic change may prove a barrier to the effectiveness of dietary reduction of iron intake as a preventative measure in chronic alcohol consumption.
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Affiliation(s)
| | | | | | | | | | - John Wilkinson
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA (V.E.S.)
| | - Emine C. Koc
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA (V.E.S.)
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Harris PS, McGinnis CD, Michel CR, Marentette JO, Reisdorph R, Roede JR, Fritz KS. Click chemistry-based thiol redox proteomics reveals significant cysteine reduction induced by chronic ethanol consumption. Redox Biol 2023; 64:102792. [PMID: 37390786 PMCID: PMC10331594 DOI: 10.1016/j.redox.2023.102792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/09/2023] [Accepted: 06/18/2023] [Indexed: 07/02/2023] Open
Abstract
In the U.S., alcohol-associated liver disease (ALD) impacts millions of people and is a major healthcare burden. While the pathology of ALD is unmistakable, the molecular mechanisms underlying ethanol hepatotoxicity are not fully understood. Hepatic ethanol metabolism is intimately linked with alterations in extracellular and intracellular metabolic processes, specifically oxidation/reduction reactions. The xenobiotic detoxification of ethanol leads to significant disruptions in glycolysis, β-oxidation, and the TCA cycle, as well as oxidative stress. Perturbation of these regulatory networks impacts the redox status of critical regulatory protein thiols throughout the cell. Integrating these key concepts, our goal was to apply a cutting-edge approach toward understanding mechanisms of ethanol metabolism in disrupting hepatic thiol redox signaling. Utilizing a chronic murine model of ALD, we applied a cysteine targeted click chemistry enrichment coupled with quantitative nano HPLC-MS/MS to assess the thiol redox proteome. Our strategy reveals that ethanol metabolism largely reduces the cysteine proteome, with 593 cysteine residues significantly reduced and 8 significantly oxidized cysteines. Ingenuity Pathway Analysis demonstrates that ethanol metabolism reduces specific cysteines throughout ethanol metabolism (Adh1, Cat, Aldh2), antioxidant pathways (Prx1, Mgst1, Gsr), as well as many other biochemical pathways. Interestingly, a sequence motif analysis of reduced cysteines showed a correlation for hydrophilic, charged amino acids lysine or glutamic acid nearby. Further research is needed to determine how a reduced cysteine proteome impacts individual protein activity across these protein targets and pathways. Additionally, understanding how a complex array of cysteine-targeted post-translational modifications (e.g., S-NO, S-GSH, S-OH) are integrated to regulate redox signaling and control throughout the cell is key to the development of redox-centric therapeutic agents targeted to ameliorate the progression of ALD.
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Affiliation(s)
- Peter S Harris
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Courtney D McGinnis
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Cole R Michel
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - John O Marentette
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Richard Reisdorph
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - James R Roede
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Kristofer S Fritz
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA.
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3
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Gao E, Sun X, Thorne RF, Zhang XD, Li J, Shao F, Ma J, Wu M. NIPSNAP1 directs dual mechanisms to restrain senescence in cancer cells. J Transl Med 2023; 21:401. [PMID: 37340421 DOI: 10.1186/s12967-023-04232-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/27/2023] [Indexed: 06/22/2023] Open
Abstract
BACKGROUND Although the executive pathways of senescence are known, the underlying control mechanisms are diverse and not fully understood, particularly how cancer cells avoid triggering senescence despite experiencing exacerbated stress conditions within the tumor microenvironment. METHODS Mass spectrometry (MS)-based proteomic screening was used to identify differentially regulated genes in serum-starved hepatocellular carcinoma cells and RNAi employed to determine knockdown phenotypes of prioritized genes. Thereafter, gene function was investigated using cell proliferation assays (colony-formation, CCK-8, Edu incorporation and cell cycle) together with cellular senescence assays (SA-β-gal, SAHF and SASP). Gene overexpression and knockdown techniques were applied to examine mRNA and protein regulation in combination with luciferase reporter and proteasome degradation assays, respectively. Flow cytometry was applied to detect changes in cellular reactive oxygen species (ROS) and in vivo gene function examined using a xenograft model. RESULTS Among the genes induced by serum deprivation, NIPSNAP1 was selected for investigation. Subsequent experiments revealed that NIPSNAP1 promotes cancer cell proliferation and inhibits P27-dependent induction of senescence via dual mechanisms. Firstly, NIPSNAP1 maintains the levels of c-Myc by sequestering the E3 ubiquitin ligase FBXL14 to prevent the proteasome-mediated turnover of c-Myc. Intriguingly, NIPSNAP1 levels are restrained by transcriptional repression mediated by c-Myc-Miz1, with repression lifted in response to serum withdrawal, thus identifying feedback regulation between NIPSNAP1 and c-Myc. Secondly, NIPSNAP1 was shown to modulate ROS levels by promoting interactions between the deacetylase SIRT3 and superoxide dismutase 2 (SOD2). Consequent activation of SOD2 serves to maintain cellular ROS levels below the critical levels required to induce cell cycle arrest and senescence. Importantly, the actions of NIPSNAP1 in promoting cancer cell proliferation and preventing senescence were recapitulated in vivo using xenograft models. CONCLUSIONS Together, these findings reveal NIPSNAP1 as an important mediator of c-Myc function and a negative regulator of cellular senescence. These findings also provide a theoretical basis for cancer therapy where targeting NIPSNAP1 invokes cellular senescence.
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Affiliation(s)
- Enyi Gao
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou, 450046, China
- School of Basic Medical Sciences, Henan University, Zhengzhou, 450046, China
| | - Xiaoya Sun
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Rick Francis Thorne
- Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, 450003, China
| | - Xu Dong Zhang
- Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, 450003, China
| | - Jinming Li
- Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, 450003, China
| | - Fengmin Shao
- Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, 450003, China.
| | - Jianli Ma
- Department of Radiation Oncology, Harbin Medical University Cancer Hospital, Harbin, China.
| | - Mian Wu
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou, 450046, China.
- School of Basic Medical Sciences, Henan University, Zhengzhou, 450046, China.
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4
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Pearson-Smith JN, Fulton R, Huynh CQ, Figueroa AG, Huynh GB, Liang LP, Gano LB, Michel CR, Reisdorph N, Reisdorph R, Fritz KS, Verdin E, Patel M. Neuronal SIRT3 Deletion Predisposes to Female-Specific Alterations in Cellular Metabolism, Memory, and Network Excitability. J Neurosci 2023; 43:1845-1857. [PMID: 36759193 PMCID: PMC10010453 DOI: 10.1523/jneurosci.1259-22.2023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 01/14/2023] [Accepted: 02/01/2023] [Indexed: 02/11/2023] Open
Abstract
Mitochondrial dysfunction is an early event in the pathogenesis of neurologic disorders and aging. Sirtuin 3 (SIRT3) regulates mitochondrial function in response to the cellular environment through the reversible deacetylation of proteins involved in metabolism and reactive oxygen species detoxification. As the primary mitochondrial deacetylase, germline, or peripheral tissue-specific deletion of SIRT3 produces mitochondrial hyperacetylation and the accelerated development of age-related diseases. Given the unique metabolic demands of neurons, the role of SIRT3 in the brain is only beginning to emerge. Using mass spectrometry-based acetylomics, high-resolution respirometry, video-EEG, and cognition testing, we report targeted deletion of SIRT3 from select neurons in the cortex and hippocampus produces altered neuronal excitability and metabolic dysfunction in female mice. Targeted deletion of SIRT3 from neuronal helix-loop-helix 1 (NEX)-expressing neurons resulted in mitochondrial hyperacetylation, female-specific superoxide dismutase-2 (SOD2) modification, increased steady-state superoxide levels, metabolic reprogramming, altered neuronal excitability, and working spatial memory deficits. Inducible neuronal deletion of SIRT3 likewise produced female-specific deficits in spatial working memory. Together, the data demonstrate that deletion of SIRT3 from forebrain neurons selectively predisposes female mice to deficits in mitochondrial and cognitive function.SIGNIFICANCE STATEMENT Mitochondrial SIRT3 is an enzyme shown to regulate energy metabolism and antioxidant function, by direct deacetylation of proteins. In this study, we show that neuronal SIRT3 deficiency renders female mice selectively vulnerable to impairment in redox and metabolic function, spatial memory, and neuronal excitability. The observed sex-specific effects on cognition and neuronal excitability in female SIRT3-deficient mice suggest that mitochondrial dysfunction may be one factor underlying comorbid neuronal diseases, such as Alzheimer's disease and epilepsy. Furthermore, the data suggest that SIRT3 dysfunction may predispose females to age-related metabolic and cognitive impairment.
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Affiliation(s)
- Jennifer N Pearson-Smith
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
- Division of Geriatric Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Ruth Fulton
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Christopher Q Huynh
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Anna G Figueroa
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Gia B Huynh
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Li-Ping Liang
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Lindsey B Gano
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Cole R Michel
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Nichole Reisdorph
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Richard Reisdorph
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Kristofer S Fritz
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
| | - Eric Verdin
- Buck Institute for Aging, Novato, California 94945
| | - Manisha Patel
- School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045
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5
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Shen Y, Huang H, Wang Y, Yang R, Ke X. Antioxidant effects of Se-glutathione peroxidase in alcoholic liver disease. J Trace Elem Med Biol 2022; 74:127048. [PMID: 35963055 DOI: 10.1016/j.jtemb.2022.127048] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/11/2022] [Accepted: 07/27/2022] [Indexed: 02/07/2023]
Abstract
Oxidative damage induced by ethanol and its metabolites is one of the factors that fuels the development of alcoholic liver disease (ALD). Selenium (Se) is an effective cofactor for glutathione peroxidase (GPx), and has antioxidant effects that improve ALD. In patients with ALD, ethanol-induced oxidative damage inhibits the synthesis of related Se-containing proteins such as: selenoprotein P (Sepp1), albumin (ALB), and GPx in the liver, thus decreasing the overall Se level in patients. Both Se deficiency and excess can affect the expression of GPx, resulting in damage to the antioxidant defense system. This damage enhances oxidative stress by increasing the levels of reactive oxygen species (ROS) in the body, which aggravates the inflammatory response, lipid metabolism disorder, and lipid peroxidation and worsens ALD symptoms. A cascade of oxidative damages caused by ALD will deplete selenium deposition in the body, stimulate the expression of Gpx1, Sepp1, and Gpx4, and thus mobilize systemic selenoproteins, which can restore GPx activity in the hepatocytes of ALD patients, reduce the levels of reactive oxygen species and alleviate oxidative stress, the inflammatory response, lipid metabolism disorder, and lipid peroxidation, thus helping to mitigate ALD. This review provides a reference for future ALD studies that evaluate the regulation of Se levels and contributes to studies on the potential pathological mechanisms of Se imbalance in ALD.
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Affiliation(s)
- Yingyan Shen
- Key Laboratory Breeding Base of Systematic Research and Utilization on Chinese Meterial, Medical Resources Co-founded by Sichuan Province and Ministry of Science and Technology, Chengdu University of Traditional Chinese Medicine, Chendu, China
| | - Hanmei Huang
- Chongqing Key Laboratory of Chinese Medicine New Drug Screening, Southwest University, Chongqing, China
| | - Yunhong Wang
- Chongqing Academy of Chinese Materia Medica, Chongqing, China
| | - Rongping Yang
- Chongqing Key Laboratory of Chinese Medicine New Drug Screening, Southwest University, Chongqing, China.
| | - Xiumei Ke
- Chongqing Key Laboratory of Traditional Chinese Medicine for Prevention and Cure of Metabolic Diseases, Chongqing Medical University, Chongqing, China.
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6
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Alahmari AS, El-Mekkawy HI, Al-Doaiss AA, Alduwish MA. Effect of Natural Commiphora myrrha Extract against Hepatotoxicity Induced by Alcohol Intake in Rat Model. TOXICS 2022; 10:toxics10120729. [PMID: 36548562 PMCID: PMC9786033 DOI: 10.3390/toxics10120729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/21/2022] [Accepted: 11/24/2022] [Indexed: 06/03/2023]
Abstract
The oral intake of alcohol has become a widespread concern due to its high risk to body health. Therefore, our purpose in this study was to reveal the antioxidant efficacies of natural Commiphora myrrha on hepatotoxicity and oxidative stress induced by ethanol in adult male rats, especially because these were not adequately revealed by previous studies. We examined the impacts of C. myrrha in male Sprague Dawley rats orally treated with C. myrrha (500 mg/kg) alone or in combination with 40% ethanol (3 g/kg), daily for 30 days. The results showed that treatment with C. myrrha after the oral consumption of ethanol caused a reduction in serum liver function parameters (alanine transferases, aspartate transaminase, and total bilirubin), hepatic tumor markers (α-L-flucosidase and arginase), and hepatic lipid peroxidation indicator (thiobarbituric acid reactive substances), as well as a slight restoration (not significant) in the levels of superoxide dismutase, catalase, reduced glutathione; and total antioxidant capacity. In addition, it alleviated histopathological changes in the liver, as revealed by decreased areas of inflammatory infiltrate, milder necrosis, and noticeably reduced periportal fibrosis and hemorrhage. The therapeutic efficiency of C. myrrha could be due to its rich sesquiterpenoids content which possesses anti-inflammatory properties and ROS-scavenging activities. Our findings provide evidence that the attenuation of oxidative stress by C. myrrha enables hepatic tissue to suppress inflammatory and oxidative mechanisms, resulting in enhanced liver structure and function. Therefore, C. myrrha extract shows promise as a protective and therapeutic supplement against toxic agents.
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Affiliation(s)
- Abeer S. Alahmari
- Biology Department, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, Saudi Arabia
| | - Haitham I. El-Mekkawy
- Biology Department, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Amin A. Al-Doaiss
- Biology Department, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia
- Anatomy and Histology Department, Faculty of Medicine, Sana’a University, Sana’a 1247, Yemen
| | - Manal A. Alduwish
- Department of Biology, Faculty of Science and Humanities, Prince Sattam Bin Abdulaziz University, Alkarj 11942, Saudi Arabia
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Zavileyskiy LG, Aleshin VA, Kaehne T, Karlina IS, Artiukhov AV, Maslova MV, Graf AV, Bunik VI. The Brain Protein Acylation System Responds to Seizures in the Rat Model of PTZ-Induced Epilepsy. Int J Mol Sci 2022; 23:ijms232012302. [PMID: 36293175 PMCID: PMC9603846 DOI: 10.3390/ijms232012302] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/08/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022] Open
Abstract
Abnormal energy expenditure during seizures and metabolic regulation through post-translational protein acylation suggest acylation as a therapeutic target in epilepsy. Our goal is to characterize an interplay between the brain acylation system components and their changes after seizures. In a rat model of pentylenetetrazole (PTZ)-induced epilepsy, we quantify 43 acylations in 29 cerebral cortex proteins; levels of NAD+; expression of NAD+-dependent deacylases (SIRT2, SIRT3, SIRT5); activities of the acyl-CoA-producing/NAD+-utilizing complexes of 2-oxoacid dehydrogenases. Compared to the control group, acylations of 14 sites in 11 proteins are found to differ significantly after seizures, with six of the proteins involved in glycolysis and energy metabolism. Comparing the single and chronic seizures does not reveal significant differences in the acylations, pyruvate dehydrogenase activity, SIRT2 expression or NAD+. On the contrary, expression of SIRT3, SIRT5 and activity of 2-oxoglutarate dehydrogenase (OGDH) decrease in chronic seizures vs. a single seizure. Negative correlations between the protein succinylation/glutarylation and SIRT5 expression, and positive correlations between the protein acetylation and SIRT2 expression are shown. Our findings unravel involvement of SIRT5 and OGDH in metabolic adaptation to seizures through protein acylation, consistent with the known neuroprotective role of SIRT5 and contribution of OGDH to the Glu/GABA balance perturbed in epilepsy.
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Affiliation(s)
- Lev G. Zavileyskiy
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Vasily A. Aleshin
- Department of Biokinetics, A.N. Belozersky Institute of Physicochemical Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
- Department of Biochemistry, Sechenov University, 119048 Moscow, Russia
| | - Thilo Kaehne
- Institute of Experimental Internal Medicine, Otto von Guericke University, 39106 Magdeburg, Germany
| | - Irina S. Karlina
- N.V. Sklifosovsky Institute of Clinical Medicine, Sechenov First Moscow State Medical University, 119435 Moscow, Russia
| | - Artem V. Artiukhov
- Department of Biokinetics, A.N. Belozersky Institute of Physicochemical Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
- Department of Biochemistry, Sechenov University, 119048 Moscow, Russia
| | - Maria V. Maslova
- Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Anastasia V. Graf
- Department of Biokinetics, A.N. Belozersky Institute of Physicochemical Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
- Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Victoria I. Bunik
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119234 Moscow, Russia
- Department of Biokinetics, A.N. Belozersky Institute of Physicochemical Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
- Department of Biochemistry, Sechenov University, 119048 Moscow, Russia
- Correspondence: ; Tel.: +7-(495)-939-4484
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Alcohol-Related Liver Disease: An Overview on Pathophysiology, Diagnosis and Therapeutic Perspectives. Biomedicines 2022; 10:biomedicines10102530. [PMID: 36289791 PMCID: PMC9599689 DOI: 10.3390/biomedicines10102530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/01/2022] [Accepted: 10/08/2022] [Indexed: 11/19/2022] Open
Abstract
Alcohol-related liver disease (ALD) refers to a spectrum of liver manifestations ranging from fatty liver diseases, steatohepatitis, and fibrosis/cirrhosis with chronic inflammation primarily due to excessive alcohol use. Currently, ALD is considered as one of the most prevalent causes of liver disease-associated mortality worldwide. Although the pathogenesis of ALD has been intensively investigated, the present understanding of its biomarkers in the context of early clinical diagnosis is not complete, and novel therapeutic targets that can significantly alleviate advanced forms of ALD are limited. While alcohol abstinence remains the primary therapeutic intervention for managing ALD, there are currently no approved medications for treating ALD. Furthermore, given the similarities and the differences between ALD and non-alcoholic fatty liver disease in terms of disease progression and underlying molecular mechanisms, numerous studies have demonstrated that many therapeutic interventions targeting several signaling pathways, including oxidative stress, inflammatory response, hormonal regulation, and hepatocyte death play a significant role in ALD treatment. Therefore, in this review, we summarized several key molecular targets and their modes of action in ALD progression. We also described the updated therapeutic options for ALD management with a particular emphasis on potentially novel signaling pathways.
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Potential Effect of Enzymatic Porcine Placental Hydrolysate (EPPH) to Improve Alcoholic Liver Disease (ALD) by Promoting Lipolysis in the Liver. BIOLOGY 2022; 11:biology11071012. [PMID: 36101395 PMCID: PMC9311938 DOI: 10.3390/biology11071012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 11/16/2022]
Abstract
Alcoholic liver disease is associated with the production of highly reactive free radicals by ethanol and its metabolites. Free radicals not only induce liver oxidation and damage tissues, but also stimulate an inflammatory response in hepatocytes, leading to severe liver disease. In order to improve alcoholic liver disease, enzymatic porcine placenta hydrolysate was studied by exploring various materials. Enzymatic porcine placenta hydrolysate (EPPH) contains various amino acids, peptides, and proteins, and is used as a useful substance in the body. In this study, changes were confirmed in indicators related to the antioxidant efficacy of EPPH in vitro and in vivo. EPPH inhibits an EtOH-induced decrease in superoxide dismutase and catalase activity through inhibition of free radicals without endogenous cytotoxicity. EPPH has been observed to have a partial effect on common liver function factors such as liver weight, ALT, AST, ALP, and GGT. In addition, EPPH affected changes in fat regulators and inflammatory cytokines in blood biochemical assays. It was confirmed that EPPH was involved in fat metabolism in hepatocytes by regulating PPARα in an alcoholic liver disease animal model. Therefore, EPPH strongly modulates Bcl-2 and BAX involved in apoptosis, thereby exhibiting cytochrome P450 (CYP)-inhibitory effects in alcoholic liver disease cells. As a result, this study confirmed that EPPH is a substance that can help liver health by improving liver disease in an alcoholic liver disease animal model.
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10
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McGinnis CD, Jennings EQ, Harris PS, Galligan JJ, Fritz KS. Biochemical Mechanisms of Sirtuin-Directed Protein Acylation in Hepatic Pathologies of Mitochondrial Dysfunction. Cells 2022; 11:cells11132045. [PMID: 35805129 PMCID: PMC9266223 DOI: 10.3390/cells11132045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/06/2022] [Accepted: 06/10/2022] [Indexed: 12/12/2022] Open
Abstract
Mitochondrial protein acetylation is associated with a host of diseases including cancer, Alzheimer’s, and metabolic syndrome. Deciphering the mechanisms regarding how protein acetylation contributes to disease pathologies remains difficult due to the complex diversity of pathways targeted by lysine acetylation. Specifically, protein acetylation is thought to direct feedback from metabolism, whereby nutritional status influences mitochondrial pathways including beta-oxidation, the citric acid cycle, and the electron transport chain. Acetylation provides a crucial connection between hepatic metabolism and mitochondrial function. Dysregulation of protein acetylation throughout the cell can alter mitochondrial function and is associated with numerous liver diseases, including non-alcoholic and alcoholic fatty liver disease, steatohepatitis, and hepatocellular carcinoma. This review introduces biochemical mechanisms of protein acetylation in the regulation of mitochondrial function and hepatic diseases and offers a viewpoint on the potential for targeted therapies.
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Affiliation(s)
- Courtney D. McGinnis
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (C.D.M.); (P.S.H.)
| | - Erin Q. Jennings
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ 85721, USA; (E.Q.J.); (J.J.G.)
| | - Peter S. Harris
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (C.D.M.); (P.S.H.)
| | - James J. Galligan
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ 85721, USA; (E.Q.J.); (J.J.G.)
| | - Kristofer S. Fritz
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (C.D.M.); (P.S.H.)
- Correspondence:
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11
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Hulsebus HJ, Najarro KM, McMahan RH, Boe DM, Orlicky DJ, Kovacs EJ. Ethanol Intoxication Impairs Respiratory Function and Bacterial Clearance and Is Associated With Neutrophil Accumulation in the Lung After Streptococcus pneumoniae Infection. Front Immunol 2022; 13:884719. [PMID: 35603143 PMCID: PMC9116899 DOI: 10.3389/fimmu.2022.884719] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 04/11/2022] [Indexed: 11/27/2022] Open
Abstract
Alcohol consumption is commonplace in the United States and its prevalence has increased in recent years. Excessive alcohol use is linked to an increased risk of infections including pneumococcal pneumonia, mostly commonly caused by Streptococcus pneumoniae. In addition, pneumonia patients with prior alcohol use often require more intensive treatment and longer hospital stays due to complications of infection. The initial respiratory tract immune response to S. pneumoniae includes the production of pro-inflammatory cytokines and chemokines by resident cells in the upper and lower airways which activate and recruit leukocytes to the site of infection. However, this inflammation must be tightly regulated to avoid accumulation of toxic by-products and subsequent tissue damage. A majority of previous work on alcohol and pneumonia involve animal models utilizing high concentrations of ethanol or chronic exposure and offer conflicting results about how ethanol alters immunity to pathogens. Further, animal models often employ a high bacterial inoculum which may overwhelm the immune system and obscure results, limiting their applicability to the course of human infection. Here, we sought to determine how a more moderate ethanol exposure paradigm affects respiratory function and innate immunity in mice after intranasal infection with 104 colony forming units of S. pneumoniae. Ethanol-exposed mice displayed respiratory dysfunction and impaired bacterial clearance after infection compared to their vehicle-exposed counterparts. This altered response was associated with increased gene expression of neutrophil chemokines Cxcl1 and Cxcl2 in whole lung homogenates, elevated concentrations of circulating granulocyte-colony stimulating factor (G-CSF), and higher neutrophil numbers in the lung 24 hours after infection. Taken together, these findings suggest that even a more moderate ethanol consumption pattern can dramatically modulate the innate immune response to S. pneumoniae after only 3 days of ethanol exposure and provide insight into possible mechanisms related to the compromised respiratory immunity seen in alcohol consumers with pneumonia.
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Affiliation(s)
- Holly J Hulsebus
- Department of Surgery, Division of GI, Trauma and Endocrine Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.,Immunology Graduate Program, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Kevin M Najarro
- Department of Surgery, Division of GI, Trauma and Endocrine Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Rachel H McMahan
- Department of Surgery, Division of GI, Trauma and Endocrine Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Devin M Boe
- Department of Surgery, Division of GI, Trauma and Endocrine Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.,Immunology Graduate Program, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - David J Orlicky
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Elizabeth J Kovacs
- Department of Surgery, Division of GI, Trauma and Endocrine Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.,Immunology Graduate Program, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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12
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Proteomic analysis of alcohol-associated hepatitis reveals glycoprotein NMB (GPNMB) as a novel hepatic and serum biomarker. Alcohol 2022; 99:35-48. [PMID: 34923085 PMCID: PMC8919678 DOI: 10.1016/j.alcohol.2021.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/29/2021] [Accepted: 11/30/2021] [Indexed: 12/14/2022]
Abstract
Alcohol consumption remains a leading cause of liver disease worldwide, resulting in a complex array of hepatic pathologies, including steatosis, steatohepatitis, and cirrhosis. Individuals who progress to a rarer form of alcohol-associated liver disease (ALD), alcohol-associated hepatitis (AH), require immediate life-saving intervention in the form of liver transplantation. Rapid onset of AH is poorly understood and the metabolic mechanisms contributing to the progression to liver failure remain undetermined. While multiple mechanisms have been identified that contribute to ALD, no cures exist and mortality from AH remains high. To identify novel pathways associated with AH, our group utilized proteomics to investigate AH-specific biomarkers in liver explant tissues. The goal of the present study was to determine changes in the proteome as well as epigenetic changes occurring in AH. Protein abundance and acetylomic analyses were performed utilizing nHPLC-MS/MS, revealing significant changes to proteins associated with metabolic and inflammatory fibrosis pathways. Here, we describe a novel hepatic and serum biomarker of AH, glycoprotein NMB (GPNMB). The anti-inflammatory protein GPNMB was significantly increased in AH explant liver and serum compared to healthy donors by 50-fold and 6.5-fold, respectively. Further, bioinformatics analyses identified an AH-dependent decrease in protein abundance across fatty acid degradation, biosynthesis of amino acids, and carbon metabolism. The greatest increases in protein abundance were observed in pathways for focal adhesion, lysosome, phagosome, and actin cytoskeleton. In contrast with the hyperacetylation observed in murine models of ALD, protein acetylation was decreased in AH compared to normal liver across fatty acid degradation, biosynthesis of amino acids, and carbon metabolism. Interestingly, immunoblot analysis found epigenetic marks were significantly increased in AH explants, including Histone H3K9 and H2BK5 acetylation. The increased acetylation of histones likely plays a role in the altered proteomic profile observed, including increases in GPNMB. Indeed, our results reveal that the AH proteome is dramatically impacted through unanticipated and unknown mechanisms. Understanding the origin and consequences of these changes will yield new mechanistic insight for ALD as well as identify novel hepatic and serum biomarkers, such as GPNMB.
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13
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Cheng F, Ge X, Zhang Y, Li J, Yan S, Li Y, Wang M. Quercetin and d-chiro-inositol combined alleviate hepatic insulin resistance. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Michalak A, Lach T, Cichoż-Lach H. Oxidative Stress-A Key Player in the Course of Alcohol-Related Liver Disease. J Clin Med 2021; 10:jcm10143011. [PMID: 34300175 PMCID: PMC8303854 DOI: 10.3390/jcm10143011] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/04/2021] [Accepted: 07/05/2021] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress is known to be an inseparable factor involved in the presentation of liver disorders. Free radicals interfere with DNA, proteins, and lipids, which are crucial in liver metabolism, changing their expression and biological functions. Additionally, oxidative stress modifies the function of micro-RNAs, impairing the metabolism of hepatocytes. Free radicals have also been proven to influence the function of certain transcriptional factors and to alter the cell cycle. The pathological appearance of alcohol-related liver disease (ALD) constitutes an ideal example of harmful effects due to the redox state. Finally, ethanol-induced toxicity and overproduction of free radicals provoke irreversible changes within liver parenchyma. Understanding the underlying mechanisms associated with the redox state in the course of ALD creates new possibilities of treatment for patients. The future of hepatology may become directly dependent on the effective action against reactive oxygen species. This review summarizes current data on the redox state in the natural history of ALD, highlighting the newest reports on this topic.
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Affiliation(s)
- Agata Michalak
- Department of Gastroenterology with Endoscopy Unit, Medical University of Lublin, Jaczewskiego 8, 20-090 Lublin, Poland;
| | - Tomasz Lach
- Department of Orthopedics and Traumatology, Medical University of Lublin, Jaczewskiego 8, 20-090 Lublin, Poland;
| | - Halina Cichoż-Lach
- Department of Gastroenterology with Endoscopy Unit, Medical University of Lublin, Jaczewskiego 8, 20-090 Lublin, Poland;
- Correspondence: ; Tel.: +48-601377656; Fax: +48-814796135
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15
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Chai X, Guo J, Dong R, Yang X, Deng C, Wei C, Xu J, Han W, Lu J, Gao C, Gao D, Huang C, Ke A, Li S, Li H, Tian Y, Gu Z, Liu S, Liu H, Chen Q, Liu F, Zhou J, Fan J, Shi G, Wu F, Cai J. Quantitative acetylome analysis reveals histone modifications that may predict prognosis in hepatitis B-related hepatocellular carcinoma. Clin Transl Med 2021; 11:e313. [PMID: 33783990 PMCID: PMC7939233 DOI: 10.1002/ctm2.313] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 12/20/2022] Open
Abstract
Lysine acetylation (Kac) as an important posttranslational modification of histones is essential for the regulation of gene expression in hepatocellular carcinoma (HCC). However, the atlas of whole acetylated proteins in HCC tissues and the difference in protein acetylation between normal human tissues and HCC tissues are unknown. In this report, we characterized the proteome and acetyl proteome (acetylome) profile of normal, paracancerous, and HCC liver tissues in human clinical samples by quantitative proteomics techniques. We identified 6781 acetylation sites of 2582 proteins and quantified 2492 acetylation sites of 1190 proteins in normal, paracancerous, and HCC liver tissues. Among them, 15 proteins were multiacetylated with more than 10 lysine residues. The histone acetyltransferases p300 and CBP were found to be hyperacetylated in hepatitis B virus pathway. Moreover, we found that 250 Kac sites of 214 proteins were upregulated and 662 Kac sites of 451 proteins were downregulated in HCC compared with normal liver tissues. Additionally, the acetylation levels of lysine 120 in histone H2B (H2BK120ac), lysine 18 in histone H3.3 (H3.3K18ac), and lysine 77 in histone H4 (H4K77ac) were increased in HCC. Interestingly, the higher levels of H2BK120ac, H3.3K18ac, and H4K77ac were significantly associated with worse prognosis, such as poorer survival and higher recurrence in an independent clinical cohort of HCC patients. Overall, this study lays a foundation for understanding the functions of acetylation in HCC and provides potential prognostic factors for the diagnosis and therapy of HCC.
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Affiliation(s)
- Xiaoqiang Chai
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Jianfei Guo
- Shanghai Center for Plant Stress BiologyCenter for Excellence in Plant Molecular SciencesChinese Academy of SciencesShanghaiChina
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenChina
| | - Ruizhao Dong
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Xuan Yang
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Chao Deng
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
- School of Basic Medical SciencesFudan UniversityShanghaiChina
| | - Chuanyuan Wei
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - JiaJie Xu
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
- School of Basic Medical SciencesFudan UniversityShanghaiChina
| | - Weiyu Han
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Jiacheng Lu
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Chao Gao
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Dongmei Gao
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Cheng Huang
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Aiwu Ke
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Shuangqi Li
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Huanping Li
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Yingming Tian
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Zhongkai Gu
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Shuxian Liu
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Hang Liu
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Qilong Chen
- Institute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Feng Liu
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Jian Zhou
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Jia Fan
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Guoming Shi
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Feizhen Wu
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
| | - Jiabin Cai
- Department of Liver Surgery and Transplantation of Zhongshan Hospital, Liver Cancer Institute of Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Laboratory of epigenetics of Institutes of Biomedical Sciences, Key Laboratory of Birth Defects of Children's HospitalFudan UniversityShanghaiChina
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16
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Wang X, Li M, Peng L, Tang N. SOD2 promotes the expression of ABCC2 through lncRNA CLCA3p and improves the detoxification capability of liver cells. Toxicol Lett 2020; 327:9-18. [PMID: 32201199 DOI: 10.1016/j.toxlet.2020.03.013] [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: 01/07/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 12/17/2022]
Abstract
Superoxide dismutase 2 (SOD2) is a key enzyme for scavenging reactive oxygen species produced by mitochondria, which plays an important role in maintaining cellular homeostasis. However, its effects on the detoxification capability of liver cells have not been reported. In this study, we found that change in SOD2 expression affects the proliferation of liver cells. Genome-wide microarray analysis showed that SOD2 positively regulates the drug transporter ABCC2, and co-expression analysis suggested that lncRNA CLCA3P participates in the process. Further experiments showed that SOD2 can promote the expression of CLCA3P, which increases the transcription of ABCC2 by interacting with the transcription factor IRF1. By increasing ABCC2 expression SOD2 facilitates drugs efflux of liver cells and thus promotes their survival under a drug-toxic environment. This study elucidates the improvement of the detoxification of liver cells by a regulatory axis, SOD2-CLCA3P-IRF1-ABCC2, and provides novel insight into the modification of human liver cells that can be applied to bioartificial liver system or the study of SOD2 in drug metabolism.
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Affiliation(s)
- Xiaoqian Wang
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Man Li
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Lirong Peng
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Nanhong Tang
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China; Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Research Center for Molecular Medicine, Fujian Medical University, Fuzhou, China.
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17
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Alcohol Metabolizing Enzymes, Microsomal Ethanol Oxidizing System, Cytochrome P450 2E1, Catalase, and Aldehyde Dehydrogenase in Alcohol-Associated Liver Disease. Biomedicines 2020; 8:biomedicines8030050. [PMID: 32143280 PMCID: PMC7148483 DOI: 10.3390/biomedicines8030050] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/20/2020] [Accepted: 02/29/2020] [Indexed: 12/12/2022] Open
Abstract
Once ingested, most of the alcohol is metabolized in the liver by alcohol dehydrogenase to acetaldehyde. Two additional pathways of acetaldehyde generation are by microsomal ethanol oxidizing system (cytochrome P450 2E1) and catalase. Acetaldehyde can form adducts which can interfere with cellular function, leading to alcohol-induced liver injury. The variants of alcohol metabolizing genes encode enzymes with varied kinetic properties and result in the different rate of alcohol elimination and acetaldehyde generation. Allelic variants of these genes with higher enzymatic activity are believed to be able to modify susceptibility to alcohol-induced liver injury; however, the human studies on the association of these variants and alcohol-associated liver disease are inconclusive. In addition to acetaldehyde, the shift in the redox state during alcohol elimination may also link to other pathways resulting in activation of downstream signaling leading to liver injury.
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18
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Shearn CT, Fennimore B, Orlicky DJ, Gao YR, Saba LM, Battista KD, Aivazidis S, Assiri M, Harris PS, Michel C, Merrill GF, Schmidt EE, Colgan SP, Petersen DR. Cholestatic liver disease results increased production of reactive aldehydes and an atypical periportal hepatic antioxidant response. Free Radic Biol Med 2019; 143:101-114. [PMID: 31377417 PMCID: PMC6848778 DOI: 10.1016/j.freeradbiomed.2019.07.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 06/30/2019] [Accepted: 07/31/2019] [Indexed: 01/22/2023]
Abstract
Cholangiopathies such as primary sclerosing cholangitis (PSC) are chronic liver diseases characterized by increased cholestasis, biliary inflammation and oxidative stress. The objective of this study was to elucidate the impact of cholestatic injury on oxidative stress-related factors. Using hepatic tissue and whole cell liver extracts (LE) isolated from 11-week old C57BL/6J (WT) and Mdr2KO mice, inflammation and oxidative stress was assessed. Concurrently, specific targets of carbonylation were assessed in LE prepared from murine groups as well as from normal and human patients with end-stage PSC. Identified carbonylated proteins were further evaluated using bioinformatics analyses. Picrosirius red staining revealed extensive fibrosis in Mdr2KO liver, and fibrosis colocalized with increased periportal inflammatory cells and both acrolein and 4-HNE staining. Western blot analysis revealed elevated periportal expression of antioxidant proteins Cbr3, GSTμ, Prdx5, TrxR1 and HO-1 but not GCLC, GSTπ or catalase in the Mdr2KO group when compared to WT. From immunohistochemical analysis, increased periportal reactive aldehyde production colocalized with elevated staining of Cbr3, GSTμ and TrxR1 but surprisingly not with Nrf2. Mass spectrometric analysis revealed an increase in carbonylated proteins in the Mdr2KO and PSC groups compared to respective controls. Gene ontology and KEGG pathway analysis of carbonylated proteins revealed a propensity for increased carbonylation of proteins broadly involved in metabolic processes as well more specifically in Rab-mediated signal transduction, lysosomes and the large ribosomal subunit in human PSC. Western blot analysis of Rab-GTPase expression revealed no significant differences in Mdr2KO mice when compared to WT livers. In contrast, PSC tissue exhibited decreased levels of Rabs 4, 5 and increased abundance of Rabs 6 and 9a protein. Results herein reveal that cholestasis induces stage-dependent increases in periportal oxidative stress responses and protein carbonylation, potentially contributing to pathogenesis in Mdr2KO. Furthermore, during early stage cholestasis, there is cell-specific upregulation of some but not all, antioxidant proteins.
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Affiliation(s)
- Colin T Shearn
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States.
| | - Blair Fennimore
- Department of Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - David J Orlicky
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Yue R Gao
- Department of Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Laura M Saba
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Kayla D Battista
- Department of Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Stefanos Aivazidis
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Mohammed Assiri
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Peter S Harris
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Cole Michel
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Gary F Merrill
- Department of Biochemistry and Biophysics, Oregon State University, Corvalis, OR, 97331, United States
| | - Edward E Schmidt
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, 59717, United States
| | - Sean P Colgan
- Department of Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
| | - Dennis R Petersen
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States
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19
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Kong LZ, Chandimali N, Han YH, Lee DH, Kim JS, Kim SU, Kim TD, Jeong DK, Sun HN, Lee DS, Kwon T. Pathogenesis, Early Diagnosis, and Therapeutic Management of Alcoholic Liver Disease. Int J Mol Sci 2019; 20:ijms20112712. [PMID: 31159489 PMCID: PMC6600448 DOI: 10.3390/ijms20112712] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/30/2019] [Accepted: 05/31/2019] [Indexed: 02/08/2023] Open
Abstract
Alcoholic liver disease (ALD) refers to the damages to the liver and its functions due to alcohol overconsumption. It consists of fatty liver/steatosis, alcoholic hepatitis, steatohepatitis, chronic hepatitis with liver fibrosis or cirrhosis, and hepatocellular carcinoma. However, the mechanisms behind the pathogenesis of alcoholic liver disease are extremely complicated due to the involvement of immune cells, adipose tissues, and genetic diversity. Clinically, the diagnosis of ALD is not yet well developed. Therefore, the number of patients in advanced stages has increased due to the failure of proper early detection and treatment. At present, abstinence and nutritional therapy remain the conventional therapeutic interventions for ALD. Moreover, the therapies which target the TNF receptor superfamily, hormones, antioxidant signals, and MicroRNAs are used as treatments for ALD. In particular, mesenchymal stem cells (MSCs) are gaining attention as a potential therapeutic target of ALD. Therefore, in this review, we have summarized the current understandings of the pathogenesis and diagnosis of ALD. Moreover, we also discuss the various existing treatment strategies while focusing on promising therapeutic approaches for ALD.
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Affiliation(s)
- Ling-Zu Kong
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Advanced Convergence Technology and Science, Jeju National University, Jeju 63243, Korea.
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea.
| | - Nisansala Chandimali
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Advanced Convergence Technology and Science, Jeju National University, Jeju 63243, Korea.
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea.
| | - Ying-Hao Han
- Department of Disease Model Animal Research Center, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China.
| | - Dong-Ho Lee
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup-si, Jeonbuk 56216, Korea.
| | - Ji-Su Kim
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup-si, Jeonbuk 56216, Korea.
| | - Sun-Uk Kim
- Futuristic Animal Resource & Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju-si, Chungcheongbuk-do 28116, Korea.
| | - Tae-Don Kim
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea.
| | - Dong Kee Jeong
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Advanced Convergence Technology and Science, Jeju National University, Jeju 63243, Korea.
- Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju 63243, Korea.
| | - Hu-Nan Sun
- Department of Disease Model Animal Research Center, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China.
- Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju 63243, Korea.
| | - Dong Sun Lee
- Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju 63243, Korea.
- Department of Biotechnology, College of Applied Life Science, Jeju National University, Jeju 63243, Korea.
| | - Taeho Kwon
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup-si, Jeonbuk 56216, Korea.
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20
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Ali HR, Assiri MA, Harris PS, Michel CR, Yun Y, Marentette JO, Huynh FK, Orlicky DJ, Shearn CT, Saba LM, Reisdorph R, Reisdorph N, Hirschey MD, Fritz KS. Quantifying Competition among Mitochondrial Protein Acylation Events Induced by Ethanol Metabolism. J Proteome Res 2019; 18:1513-1531. [PMID: 30644754 DOI: 10.1021/acs.jproteome.8b00800] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Mitochondrial dysfunction is one of many key factors in the etiology of alcoholic liver disease (ALD). Lysine acetylation is known to regulate numerous mitochondrial metabolic pathways, and recent reports demonstrate that alcohol-induced protein acylation negatively impacts these processes. To identify regulatory mechanisms attributed to alcohol-induced protein post-translational modifications, we employed a model of alcohol consumption within the context of wild type (WT), sirtuin 3 knockout (SIRT3 KO), and sirtuin 5 knockout (SIRT5 KO) mice to manipulate hepatic mitochondrial protein acylation. Mitochondrial fractions were examined by label-free quantitative HPLC-MS/MS to reveal competition between lysine acetylation and succinylation. A class of proteins defined as "differential acyl switching proteins" demonstrate select sensitivity to alcohol-induced protein acylation. A number of these proteins reveal saturated lysine-site occupancy, suggesting a significant level of differential stoichiometry in the setting of ethanol consumption. We hypothesize that ethanol downregulates numerous mitochondrial metabolic pathways through differential acyl switching proteins. Data are available via ProteomeXchange with identifier PXD012089.
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Affiliation(s)
- Hadi R Ali
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Mohammed A Assiri
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Peter S Harris
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Cole R Michel
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Youngho Yun
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - John O Marentette
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Frank K Huynh
- Department of Biological Sciences , San Jose State University , San Jose , California 95192 , United States
| | - David J Orlicky
- Department of Pathology, School of Medicine , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Colin T Shearn
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Laura M Saba
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Richard Reisdorph
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Nichole Reisdorph
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
| | - Matthew D Hirschey
- Department of Medicine, Division of Endocrinology, Metabolism, and Nutrition, Department of Pharmacology and Cancer Biology , Duke University Medical Center , Durham , North Carolina 27710 , United States
| | - Kristofer S Fritz
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of Colorado Anschutz Medical Campus , Aurora , Colorado 80045 , United States
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21
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García-Ruiz C, Fernández-Checa JC. Mitochondrial Oxidative Stress and Antioxidants Balance in Fatty Liver Disease. Hepatol Commun 2018; 2:1425-1439. [PMID: 30556032 PMCID: PMC6287487 DOI: 10.1002/hep4.1271] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 10/09/2018] [Indexed: 12/19/2022] Open
Abstract
Fatty liver disease is one of the most prevalent forms of chronic liver disease that encompasses both alcoholic liver disease (ALD) and nonalcoholic fatty liver disease (NAFLD). Alcoholic steatohepatitis (ASH) and nonalcoholic steatohepatitis (NASH) are intermediate stages of ALD and NAFLD, which can progress to more advanced forms, including cirrhosis and hepatocellular carcinoma. Oxidative stress and particularly alterations in mitochondrial function are thought to play a significant role in both ASH and NASH and recognized to contribute to the generation of reactive oxygen species (ROS), as documented in experimental models. Despite the evidence of ROS generation, the therapeutic efficacy of treatment with antioxidants in patients with fatty liver disease has yielded poor results. Although oxidative stress is considered to be the disequilibrium between ROS and antioxidants, there is evidence that a subtle balance among antioxidants, particularly in mitochondria, is necessary to avoid the generation of ROS and hence oxidative stress. Conclusion: As mitochondria are a major source of ROS, the present review summarizes the role of mitochondrial oxidative stress in ASH and NASH and presents emerging data indicating the need to preserve mitochondrial antioxidant balance as a potential approach for the treatment of human fatty liver disease, which may pave the way for the design of future trials to test the therapeutic role of antioxidants in fatty liver disease.
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Affiliation(s)
- Carmen García-Ruiz
- Cell Death and Proliferation Instituto Investigaciones Biomédicas de Barcelona, Consejo Superior Investigaciones Científicas Barcelona Spain.,Liver Unit, Hospital Cínic, IDIBAPS and CIBEREHD Barcelona Spain
| | - José C Fernández-Checa
- Cell Death and Proliferation Instituto Investigaciones Biomédicas de Barcelona, Consejo Superior Investigaciones Científicas Barcelona Spain.,Liver Unit, Hospital Cínic, IDIBAPS and CIBEREHD Barcelona Spain.,University of Southern California Research Center for ALPD Keck School of Medicine Los Angeles CA
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22
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Ali H, Assiri MA, Shearn CT, Fritz KS. Lipid peroxidation derived reactive aldehydes in alcoholic liver disease. CURRENT OPINION IN TOXICOLOGY 2018; 13:110-117. [PMID: 31263795 DOI: 10.1016/j.cotox.2018.10.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lipid peroxidation is a known consequence of oxidative stress and is thought to play a key role in numerous disease pathologies, including alcoholic liver disease (ALD). The overaccumulation of lipid peroxidation products during chronic alcohol consumption results in pathogenic lesions on protein, DNA, and lipids throughout the cell. Molecular adducts due to secondary end products of lipid peroxidation impact a host of biochemical processes, including inflammation, antioxidant defense, and metabolism. The aggregate burden of lipid peroxidation which occurs due to chronic alcohol metabolism, including downstream signaling events, contributes to the development and progression of ALD. In this current opinion we highlight recent studies and approaches relating cellular mechanisms of lipid peroxidation to the pathogenesis of alcoholic liver disease.
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Affiliation(s)
- Hadi Ali
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Mohammed A Assiri
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Colin T Shearn
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Kristofer S Fritz
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Colorado Anschutz Medical Campus, Aurora, CO
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23
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Naghdi S, Slovinsky WS, Madesh M, Rubin E, Hajnóczky G. Mitochondrial fusion and Bid-mediated mitochondrial apoptosis are perturbed by alcohol with distinct dependence on its metabolism. Cell Death Dis 2018; 9:1028. [PMID: 30301883 PMCID: PMC6177459 DOI: 10.1038/s41419-018-1070-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 06/29/2018] [Accepted: 08/20/2018] [Indexed: 12/11/2022]
Abstract
Environmental stressors like ethanol (EtOH) commonly target mitochondria to influence the cell’s fate. Recent literature supports that chronic EtOH exposure suppresses mitochondrial dynamics, central to quality control, and sensitizes mitochondrial permeability transition pore opening to promote cell death. EtOH-induced tissue injury is primarily attributed to its toxic metabolic products but alcoholism also impairs tissues that poorly metabolize EtOH. We embarked on studies to determine the respective roles of EtOH and its metabolites in mitochondrial fusion and tBid-induced mitochondrial apoptosis. We used HepG2 cells that do not metabolize EtOH and its engineered clone that expresses EtOH-metabolizing Cytochrome P450 E2 and alcohol dehydrogenase (VL-17A cells). We found that fusion impairment by prolonged EtOH exposure was prominent in VL-17A cells, probably owing to reactive oxygen species increase in the mitochondrial matrix. There was no change in fusion protein abundance, mitochondrial membrane potential or Ca2+ uptake. By contrast, prolonged EtOH exposure promoted tBid-induced outer mitochondrial membrane permeabilization and cell death only in HepG2 cells, owing to enhanced Bak oligomerization. Thus, mitochondrial fusion inhibition by EtOH is dependent on its metabolites, whereas sensitization to tBid-induced death is mediated by EtOH itself. This difference is of pathophysiological relevance because of the tissue-specific differences in EtOH metabolism.
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Affiliation(s)
- Shamim Naghdi
- MitoCare Center, Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - William S Slovinsky
- MitoCare Center, Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Muniswamy Madesh
- MitoCare Center, Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Emanuel Rubin
- MitoCare Center, Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - György Hajnóczky
- MitoCare Center, Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA.
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24
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Gano LB, Liang LP, Ryan K, Michel CR, Gomez J, Vassilopoulos A, Reisdorph N, Fritz KS, Patel M. Altered mitochondrial acetylation profiles in a kainic acid model of temporal lobe epilepsy. Free Radic Biol Med 2018; 123:116-124. [PMID: 29778462 PMCID: PMC6082368 DOI: 10.1016/j.freeradbiomed.2018.05.063] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/15/2018] [Indexed: 12/21/2022]
Abstract
Impaired bioenergetics and oxidative damage in the mitochondria are implicated in the etiology of temporal lobe epilepsy, and hyperacetylation of mitochondrial proteins has recently emerged as a critical negative regulator of mitochondrial functions. However, the roles of mitochondrial acetylation and activity of the primary mitochondrial deacetylase, SIRT3, have not been explored in acquired epilepsy. We investigated changes in mitochondrial acetylation and SIRT3 activity in the development of chronic epilepsy in the kainic acid rat model of TLE. Hippocampal measurements were made at 48 h, 1 week and 12 weeks corresponding to the acute, latent and chronic stages of epileptogenesis. Assessment of hippocampal bioenergetics demonstrated a ≥ 27% decrease in the ATP/ADP ratio at all phases of epileptogenesis (p < 0.05), whereas cellular NAD+ levels were decreased by ≥ 41% in the acute and latent time points (p < 0.05), but not in chronically epileptic rats. In spontaneously epileptic rats, we found decreased protein expression of SIRT3 and a 60% increase in global mitochondrial acetylation, as well as enhanced acetylation of the known SIRT3 substrates MnSOD, Ndufa9 of Complex I and IDH2 (all p < 0.05), suggesting SIRT3 dysfunction in chronic epilepsy. Mass spectrometry-based acetylomics investigation of hippocampal mitochondria demonstrated a 79% increase in unique acetylated proteins from rats in the chronic phase vs. controls. Pathway analysis identified numerous mitochondrial bioenergetic pathways affected by mitochondrial acetylation. These results suggest SIRT3 dysfunction and aberrant protein acetylation may contribute to mitochondrial dysfunction in chronic epilepsy.
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Affiliation(s)
- Lindsey B Gano
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Li-Ping Liang
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Kristen Ryan
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Cole R Michel
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Joe Gomez
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Athanassios Vassilopoulos
- Department of Radiation Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Nichole Reisdorph
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Kristofer S Fritz
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Manisha Patel
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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