1
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Altun HY, Secilmis M, Yang F, Akgul Caglar T, Vatandaslar E, Toy MF, Vilain S, Mann GE, Öztürk G, Eroglu E. Visualizing hydrogen peroxide and nitric oxide dynamics in endothelial cells using multispectral imaging under controlled oxygen conditions. Free Radic Biol Med 2024; 221:89-97. [PMID: 38735541 DOI: 10.1016/j.freeradbiomed.2024.05.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/04/2024] [Accepted: 05/10/2024] [Indexed: 05/14/2024]
Abstract
The complex interplay between hydrogen peroxide (H2O2) and nitric oxide (NO) in endothelial cells presents challenges due to technical limitations in simultaneous measurement, hindering the elucidation of their direct relationship. Previous studies have yielded conflicting findings regarding the impact of H2O2 on NO production. To address this problem, we employed genetically encoded biosensors, HyPer7 for H2O2 and geNOps for NO, allowing simultaneous imaging in single endothelial cells. Optimization strategies were implemented to enhance biosensor performance, including camera binning, temperature regulation, and environmental adjustments to mimic physiological normoxia. Our results demonstrate that under ambient oxygen conditions, H2O2 exhibited no significant influence on NO production. Subsequent exploration under physiological normoxia (5 kPa O2) revealed distinct oxidative stress levels characterized by reduced basal HyPer7 signals, enhanced H2O2 scavenging kinetics, and altered responses to pharmacological treatment. Investigation of the relationship between H2O2 and NO under varying oxygen conditions revealed a lack of NO response to H2O2 under hyperoxia (18 kPa O2) but a modest NO response under physiological normoxia (5 kPa O2). Importantly, the NO response was attenuated by l-NAME, suggesting activation of eNOS by endogenous H2O2 generation upon auranofin treatment. Our study highlights the intricate interplay between H2O2 and NO within the endothelial EA.hy926 cell line, emphasizing the necessity for additional research within physiological contexts due to differential response observed under physiological normoxia (5 kPa O2). This further investigation is essential for a comprehensive understanding of the H2O2 and NO signaling considering the physiological effects of ambient O2 levels involved.
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Affiliation(s)
- Hamza Yusuf Altun
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810, Istanbul, Turkey; Molecular Biology, Genetics, and Bioengineering Program, Sabanci University, 34956, Istanbul, Turkey
| | - Melike Secilmis
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810, Istanbul, Turkey; Molecular Biology, Genetics, and Bioengineering Program, Sabanci University, 34956, Istanbul, Turkey
| | - Fan Yang
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Tuba Akgul Caglar
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810, Istanbul, Turkey; Molecular Biology, Genetics, and Bioengineering Program, Sabanci University, 34956, Istanbul, Turkey
| | - Emre Vatandaslar
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810, Istanbul, Turkey
| | - Muhammed Fatih Toy
- School of Engineering and Natural Science, Istanbul Medipol University, 34810, Istanbul, Turkey
| | - Sven Vilain
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810, Istanbul, Turkey.
| | - Giovanni E Mann
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
| | - Gürkan Öztürk
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810, Istanbul, Turkey; Physiology Department, School of Medicine, Bolu Abant Izzet Baysal University (BAIBU), 14200, Bolu, Türkiye.
| | - Emrah Eroglu
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810, Istanbul, Turkey; Molecular Biology, Genetics, and Bioengineering Program, Sabanci University, 34956, Istanbul, Turkey.
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2
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Sharifi S, Yamamoto T, Zeug A, Elsner M, Avezov E, Mehmeti I. Non-esterified fatty acid palmitate facilitates oxidative endoplasmic reticulum stress and apoptosis of β-cells by upregulating ERO-1α expression. Redox Biol 2024; 73:103170. [PMID: 38692092 PMCID: PMC11070623 DOI: 10.1016/j.redox.2024.103170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/03/2024] Open
Abstract
Adipose tissue-derived non-esterified saturated long-chain fatty acid palmitate (PA) decisively contributes to β-cell demise in type 2 diabetes mellitus in part through the excessive generation of hydrogen peroxide (H2O2). The endoplasmic reticulum (ER) as the primary site of oxidative protein folding could represent a significant source of H2O2. Both ER-oxidoreductin-1 (ERO-1) isoenzymes, ERO-1α and ERO-1β, catalyse oxidative protein folding within the ER, generating equimolar amounts of H2O2 for every disulphide bond formed. However, whether ERO-1-derived H2O2 constitutes a potential source of cytotoxic luminal H2O2 under lipotoxic conditions is still unknown. Here, we demonstrate that both ERO-1 isoforms are expressed in pancreatic β-cells, but interestingly, PA only significantly induces ERO-1α. Its specific deletion significantly attenuates PA-mediated oxidative ER stress and subsequent β-cell death by decreasing PA-mediated ER-luminal and mitochondrial H2O2 accumulation, by counteracting the dysregulation of ER Ca2+ homeostasis, and by mitigating the reduction of mitochondrial membrane potential and lowered ATP content. Moreover, ablation of ERO-1α alleviated PA-induced hyperoxidation of the ER redox milieu. Importantly, ablation of ERO-1α did not affect the insulin secretory capacity, the unfolded protein response, or ER redox homeostasis under steady-state conditions. The involvement of ERO-1α-derived H2O2 in PA-mediated β-cell lipotoxicity was corroborated by the overexpression of a redox-active ERO-1α underscoring the proapoptotic activity of ERO-1α in pancreatic β-cells. Overall, our findings highlight the critical role of ERO-1α-derived H2O2 in lipotoxic ER stress and β-cell failure.
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Affiliation(s)
- Sarah Sharifi
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Tomoko Yamamoto
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Andre Zeug
- Institute for Neurophysiology, Hannover Medical School, 30625, Hannover, Germany
| | - Matthias Elsner
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany
| | - Edward Avezov
- Department of Clinical Neurosciences and UK Dementia Research Institute, University of Cambridge, CB2 0AH Cambridge, UK
| | - Ilir Mehmeti
- Institute of Clinical Biochemistry, Hannover Medical School, 30625, Hannover, Germany.
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3
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Beg MA, Huang M, Vick L, Rao KNS, Zhang J, Chen Y. Targeting mitochondrial dynamics and redox regulation in cardiovascular diseases. Trends Pharmacol Sci 2024; 45:290-303. [PMID: 38458847 DOI: 10.1016/j.tips.2024.02.001] [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: 01/10/2024] [Revised: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 03/10/2024]
Abstract
Accumulating evidence highlights the pivotal role of mitochondria in cardiovascular diseases (CVDs). Understanding the molecular mechanisms underlying mitochondrial dysfunction is crucial for developing targeted therapeutics. Recent years have seen substantial advancements in unraveling mitochondrial regulatory pathways in both normal and pathological states and the development of potent drugs. However, specific delivery of drugs into the mitochondria is still a challenge. We present recent findings on regulators of mitochondrial dynamics and reactive oxygen species (ROS), critical factors influencing mitochondrial function in CVDs. We also discuss advancements in drug delivery strategies aimed at overcoming the technical barrier in targeting mitochondria for CVD treatment.
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Affiliation(s)
| | - Minqi Huang
- HD Biosciences Inc. a WuXi AppTec company, San Diego, CA 92121, USA
| | - Lance Vick
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - K N Shashanka Rao
- Joint Department of Biomedical Engineering, Medical College of Wisconsin & Marquette University, Milwaukee, WI 53226, USA
| | - Jue Zhang
- Versiti Blood Research Institute, Milwaukee, WI 53226, USA
| | - Yiliang Chen
- Versiti Blood Research Institute, Milwaukee, WI 53226, USA; Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
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4
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Shen Z, Sheng H, Zhao J, Xu J, Cai Z, Zhang H, Guo Z, Liu J, Liang H, Tan L, Gan S, Huang J, Zhu S. AQP8 Modulates Mitochondrial H 2O 2 Transport to Influence Glioma Proliferation. Cancer Invest 2024; 42:345-356. [PMID: 38742677 DOI: 10.1080/07357907.2024.2352467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 05/03/2024] [Indexed: 05/16/2024]
Abstract
BACKGROUND Aquaporin-8 (AQP8) is involved in impacting glioma proliferation and can effect tumour growth by regulating Intracellular reactive oxygen species (ROS) signalling levels. In addition to transporting H2O2, AQP8 has been shown to affect ROS signaling, but evidence is lacking in gliomas. In this study, we aimed to investigate how AQP8 affects ROS signaling in gliomas. MATERIALS AND METHODS We constructed A172 and U251 cell lines with AQP8 knockdown and AQP8 rescue by CRISPR/Cas9 technology and overexpression of lentiviral vectors. We used CCK-8 and flow cytometry to test cell proliferation and cycle, immunofluorescence and Mito-Tracker CMXRos to observe the distribution of AQP8 expression in glioma cells, Amplex and DHE to study mitochondria release of H2O2, mitochondrial membrane potential (MMP) and NAD+/NADH ratio to assess mitochondrial function and protein blotting to detect p53 and p21 expression. RESULT We found that AQP8 co-localised with mitochondria and that knockdown of AQP8 inhibited the release of H2O2 from mitochondria and led to increased levels of ROS in mitochondria, thereby impairing mitochondrial function. We also discovered that AQP8 knockdown resulted in suppression of cell proliferation and was blocked at the G0/G1 phase with increased expression of mitochondrial ROS signalling-related p53/p21. CONCLUSIONS This finding provides further evidence for mechanistic studies of AQP8 as a prospective target for the treatment of gliomas.
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Affiliation(s)
- ZiHao Shen
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - HuaJun Sheng
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - Jing Zhao
- Xi'an Hospital of TCM, Xi'an, PR China
| | - Jin Xu
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - ZiLing Cai
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - Hao Zhang
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - Zhen Guo
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - JunNan Liu
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - Hang Liang
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - LiHao Tan
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - ShengWei Gan
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - Juan Huang
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
| | - ShuJuan Zhu
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, PR China
- Neuroscience Research Center, Chongqing Medical University, Chongqing, PR China
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5
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Amro Z, Collins-Praino LE, Yool AJ. Protective roles of peroxiporins AQP0 and AQP11 in human astrocyte and neuronal cell lines in response to oxidative and inflammatory stressors. Biosci Rep 2024; 44:BSR20231725. [PMID: 38451099 DOI: 10.1042/bsr20231725] [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: 10/04/2023] [Revised: 03/03/2024] [Accepted: 03/06/2024] [Indexed: 03/08/2024] Open
Abstract
In addition to aquaporin (AQP) classes AQP1, AQP4 and AQP9 known to be expressed in mammalian brain, our recent transcriptomic analyses identified AQP0 and AQP11 in human cortex and hippocampus at levels correlated with age and Alzheimer's disease (AD) status; however, protein localization remained unknown. Roles of AQP0 and AQP11 in transporting hydrogen peroxide (H2O2) in lens and kidney prompted our hypothesis that up-regulation in brain might similarly be protective. Established cell lines for astroglia (1321N1) and neurons (SHSY5Y, differentiated with retinoic acid) were used to monitor changes in transcript levels for human AQPs (AQP0 to AQP12) in response to inflammation (simulated with 10-100 ng/ml lipopolysaccharide [LPS], 24 h), and hypoxia (5 min N2, followed by 0 to 24 h normoxia). AQP transcripts up-regulated in both 1321N1 and SHSY5Y included AQP0, AQP1 and AQP11. Immunocytochemistry in 1321N1 cells confirmed protein expression for AQP0 and AQP11 in plasma membrane and endoplasmic reticulum; AQP11 increased 10-fold after LPS and AQP0 increased 0.3-fold. In SHSY5Y cells, AQP0 expression increased 0.2-fold after 24 h LPS; AQP11 showed no appreciable change. Proposed peroxiporin roles were tested using melondialdehyde (MDA) assays to quantify lipid peroxidation levels after brief H2O2. Boosting peroxiporin expression by LPS pretreatment lowered subsequent H2O2-induced MDA responses (∼50%) compared with controls; conversely small interfering RNA knockdown of AQP0 in 1321N1 increased lipid peroxidation (∼17%) after H2O2, with a similar trend for AQP11 siRNA. Interventions that increase native brain peroxiporin activity are promising as new approaches to mitigate damage caused by aging and neurodegeneration.
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Affiliation(s)
- Zein Amro
- School of Biomedicine, University of Adelaide, Adelaide, SA 5005, Australia
| | | | - Andrea J Yool
- School of Biomedicine, University of Adelaide, Adelaide, SA 5005, Australia
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6
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Liu SH, Lin WC, Liao EC, Lin YF, Wang CS, Lee SY, Pei D, Hsu CH. Aquaporin-8 promotes human dermal fibroblasts to counteract hydrogen peroxide-induced oxidative damage: A novel target for management of skin aging. Open Life Sci 2024; 19:20220828. [PMID: 38465340 PMCID: PMC10921499 DOI: 10.1515/biol-2022-0828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 03/12/2024] Open
Abstract
The skin is subjected to various external factors that contribute to aging including oxidative stress from hydrogen peroxide (H2O2). This study investigated the distribution of aquaporin-8 (AQP8), a protein that transports H2O2 across biological membranes, in skin cells, and its effects in mitigating H2O2-induced oxidative damage. Human dermal fibroblasts were treated with increasing concentrations of H2O2 to evaluate oxidative damage. Cell viability, reactive oxygen species (ROS) generation, and the expression of specific genes associated with skin aging (IL-10, FPR2, COL1A1, KRT19, and Aggrecan) were evaluated and AQP8 expression was assessed via quantitative polymerase chain reaction and western blotting. Small-interfering RNA was used to silence the AQP8 gene and evaluate its significance. The results show that H2O2 treatment reduces cell viability and increases ROS generation, leading to oxidative damage that affects the expression of target molecules. Interestingly, H2O2-treated cells exhibit high levels of AQP8 expression and gene silencing of AQP8 reverses high levels of ROS and low levels of COL1A1, KRT19, and Aggrecan expression in stressed cells, indicating that AQP8 plays a vital role in preventing oxidative damage and consequent aging. In conclusion, AQP8 is upregulated in human dermal fibroblasts during H2O2-induced oxidative stress and may help prevent oxidative damage and aging. These findings suggest that AQP8 could be a potential therapeutic target for skin aging. Further research is necessary to explore the feasibility of using AQP8 as a preventive or therapeutic strategy for maintaining skin health.
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Affiliation(s)
- Shu-Hsiang Liu
- School of Nursing, College of Nursing, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Wei-Chun Lin
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - En-Chih Liao
- Department of Medicine, MacKay Medical College, New Taipei, Taiwan
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei, Taiwan
| | - Yung-Feng Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Ching-Shuen Wang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Sheng-Yang Lee
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Dentistry, Wan-Fang Medical Center, Taipei Medical University, Taipei, Taiwan
| | - Dee Pei
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Fu Jen Catholic University Hospital, New Taipei, Taiwan
- Department of Family Medicine, Taipei City Hospital, Heping Fuyou Branch, No. 12, Fuzhou St., Zhongzheng Dist., Taipei City 100, Taiwan (R.O.C.)
| | - Chun-Hsien Hsu
- Department of Family Medicine, Taipei City Hospital, Heping Fuyou Branch, No. 12, Fuzhou St., Zhongzheng Dist., Taipei City 100, Taiwan (R.O.C.)
- Wanhua District Health Center, Department of Health, Taipei City Government, Taipei, Taiwan
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei, Taiwan
- Department of Exercise and Health Sciences, University of Taipei, Taipei, Taiwan
- Department of Family Medicine, Cardinal Tien Hospital, New Taipei, Taiwan
- Department of Family Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
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7
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Banerjee S, Smith IM, Hengen AC, Stroka KM. Methods for studying mammalian aquaporin biology. Biol Methods Protoc 2023; 8:bpad031. [PMID: 38046463 PMCID: PMC10689382 DOI: 10.1093/biomethods/bpad031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/29/2023] [Accepted: 11/09/2023] [Indexed: 12/05/2023] Open
Abstract
Aquaporins (AQPs), transmembrane water-conducting channels, have earned a great deal of scrutiny for their critical physiological roles in healthy and disease cell states, especially in the biomedical field. Numerous methods have been implemented to elucidate the involvement of AQP-mediated water transport and downstream signaling activation in eliciting whole cell, tissue, and organ functional responses. To modulate these responses, other methods have been employed to investigate AQP druggability. This review discusses standard in vitro, in vivo, and in silico methods for studying AQPs, especially for biomedical and mammalian cell biology applications. We also propose some new techniques and approaches for future AQP research to address current gaps in methodology.
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Affiliation(s)
- Shohini Banerjee
- Fischell Department of Bioengineering, University of Maryland, MD 20742, United States
| | - Ian M Smith
- Fischell Department of Bioengineering, University of Maryland, MD 20742, United States
| | - Autumn C Hengen
- Fischell Department of Bioengineering, University of Maryland, MD 20742, United States
| | - Kimberly M Stroka
- Fischell Department of Bioengineering, University of Maryland, MD 20742, United States
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore MD 21201, United States
- Biophysics Program, University of Maryland, MD 20742, United States
- Center for Stem Cell Biology and Regenerative Medicine, University of Maryland, Baltimore MD 21201, United States
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8
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den Toom WTF, van Soest DMK, Polderman PE, van Triest MH, Bruurs LJM, De Henau S, Burgering BMT, Dansen TB. Oxygen-consumption based quantification of chemogenetic H 2O 2 production in live human cells. Free Radic Biol Med 2023; 206:134-142. [PMID: 37392950 DOI: 10.1016/j.freeradbiomed.2023.06.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/18/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023]
Abstract
Reactive Oxygen Species (ROS) in the form of H2O2 can act both as physiological signaling molecules as well as damaging agents, depending on their concentration and localization. The downstream biological effects of H2O2 were often studied making use of exogenously added H2O2, generally as a bolus and at supraphysiological levels. But this does not mimic the continuous, low levels of intracellular H2O2 production by for instance mitochondrial respiration. The enzyme d-Amino Acid Oxidase (DAAO) catalyzes H2O2 formation using d-amino acids, which are absent from culture media, as a substrate. Ectopic expression of DAAO has recently been used in several studies to produce inducible and titratable intracellular H2O2. However, a method to directly quantify the amount of H2O2 produced by DAAO has been lacking, making it difficult to assess whether observed phenotypes are the result of physiological or artificially high levels of H2O2. Here we describe a simple assay to directly quantify DAAO activity by measuring the oxygen consumed during H2O2 production. The oxygen consumption rate (OCR) of DAAO can directly be compared to the basal mitochondrial respiration in the same assay, to estimate whether the ensuing level of H2O2 production is within the range of physiological mitochondrial ROS production. In the tested monoclonal RPE1-hTERT cells, addition of 5 mM d-Ala to the culture media amounts to a DAAO-dependent OCR that surpasses ∼5% of the OCR that stems from basal mitochondrial respiration and hence produces supra-physiological levels of H2O2. We show that the assay can also be used to select clones that express differentially localized DAAO with the same absolute level of H2O2 production to be able to discriminate the effects of H2O2 production at different subcellular locations from differences in total oxidative burden. This method therefore greatly improves the interpretation and applicability of DAAO-based models, thereby moving the redox biology field forward.
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Affiliation(s)
- Wytze T F den Toom
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, the Netherlands
| | - Daan M K van Soest
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, the Netherlands
| | - Paulien E Polderman
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, the Netherlands
| | - Miranda H van Triest
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, the Netherlands
| | - Lucas J M Bruurs
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, the Netherlands
| | - Sasha De Henau
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, the Netherlands
| | - Boudewijn M T Burgering
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, the Netherlands; Oncode Institute, Jaarbeursplein 6, 3521 AL, Utrecht, the Netherlands
| | - Tobias B Dansen
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, the Netherlands.
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9
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Trinchese G, Gena P, Cimmino F, Cavaliere G, Fogliano C, Garra S, Catapano A, Petrella L, Di Chio S, Avallone B, Calamita G, Mollica MP. Hepatocyte Aquaporins AQP8 and AQP9 Are Engaged in the Hepatic Lipid and Glucose Metabolism Modulating the Inflammatory and Redox State in Milk-Supplemented Rats. Nutrients 2023; 15:3651. [PMID: 37630841 PMCID: PMC10459073 DOI: 10.3390/nu15163651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/11/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023] Open
Abstract
Milk is an important source of nutrients and energy, but there are still many uncertainties regarding the health effects of milk and dairy products consumption. Milk from different species varies in physicochemical and nutritional properties. We previously showed that dietary supplements with different milks in rats trigger significant differences in metabolic and inflammatory states, modulating mitochondrial functions in metabolically active organs such as the liver and skeletal muscle. Here, we have deepened the effects of isoenergetic supplementation of milk (82 kJ) from cow (CM), donkey (DM) or human (HM) on hepatic metabolism to understand the interlink between mitochondrial metabolic flexibility, lipid storage and redox state and to highlight the possible role of two hepatocyte aquaporins (AQPs) of metabolic relevance, AQP8 and AQP9, in this crosstalk. Compared with rats with no milk supplementation, DM- and HM-fed rats had reduced hepatic lipid content with enhanced mitochondrial function and decreased oxidative stress. A marked reduction in AQP8, a hydrogen peroxide channel, was seen in the liver mitochondria of DM-fed rats compared with HM-fed, CM-fed and control animals. DM-fed or HM-fed rats also showed reduced hepatic inflammatory markers and less collagen and Kupffer cells. CM-fed rats showed higher hepatic fat content and increased AQP9 and glycerol permeability. A role of liver AQP8 and AQP9 is suggested in the different metabolic profiles resulting from milk supplementation.
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Affiliation(s)
- Giovanna Trinchese
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (G.T.); (F.C.); (C.F.); (A.C.); (L.P.); (B.A.); (M.P.M.)
| | - Patrizia Gena
- Department of Biosciences, Biotechnologies and Environment, University of Bari Aldo Moro, 70125 Bari, Italy; (P.G.); (S.G.)
| | - Fabiano Cimmino
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (G.T.); (F.C.); (C.F.); (A.C.); (L.P.); (B.A.); (M.P.M.)
| | - Gina Cavaliere
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy;
| | - Chiara Fogliano
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (G.T.); (F.C.); (C.F.); (A.C.); (L.P.); (B.A.); (M.P.M.)
| | - Sabino Garra
- Department of Biosciences, Biotechnologies and Environment, University of Bari Aldo Moro, 70125 Bari, Italy; (P.G.); (S.G.)
| | - Angela Catapano
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (G.T.); (F.C.); (C.F.); (A.C.); (L.P.); (B.A.); (M.P.M.)
| | - Lidia Petrella
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (G.T.); (F.C.); (C.F.); (A.C.); (L.P.); (B.A.); (M.P.M.)
| | - Silvia Di Chio
- Azienda Sociosanitaria Territoriale Fatebenefratelli (ASST FBF) SACCO, University of Milan, 20157 Milan, Italy;
| | - Bice Avallone
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (G.T.); (F.C.); (C.F.); (A.C.); (L.P.); (B.A.); (M.P.M.)
| | - Giuseppe Calamita
- Department of Biosciences, Biotechnologies and Environment, University of Bari Aldo Moro, 70125 Bari, Italy; (P.G.); (S.G.)
| | - Maria Pina Mollica
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (G.T.); (F.C.); (C.F.); (A.C.); (L.P.); (B.A.); (M.P.M.)
- Task Force on Microbiome Studies, University of Naples Federico II, 80138 Naples, Italy
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10
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Zhao XH, Zhao P, Deng Z, Yang T, Qi YX, An LY, Sun DL, He HY. Integrative analysis reveals marker genes for intestinal mucosa barrier repairing in clinical patients. iScience 2023; 26:106831. [PMID: 37250791 PMCID: PMC10212979 DOI: 10.1016/j.isci.2023.106831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 03/21/2023] [Accepted: 05/03/2023] [Indexed: 05/31/2023] Open
Abstract
This study aims to identify biomarkers of intestinal repair and provide potential therapeutic clues for improving functional recovery and prognostic performance after intestinal inflammation or injury. Here, we conducted a large-scale screening of multiple transcriptomic and scRNA-seq datasets of patients with inflammatory bowel disease (IBD), and identified 10 marker genes that potentially contribute to intestinal barrier repairing: AQP8, SULT1A1, HSD17B2, PADI2, SLC26A2, SELENBP1, FAM162A, TNNC2, ACADS, and TST. Analysis of a published scRNA-seq dataset revealed that expression of these healing markers were specific to absorptive cell types in intestinal epithelium. Furthermore, we conducted a clinical study where 11 patients underwent ileum resection demonstrating that upregulation of post-operative AQP8 and SULT1A1 expression were associated with improved recovery of bowel functions after surgery-induced intestinal injury, making them confident biomarkers of intestinal healing as well as potential prognostic markers and therapeutic targets for patients with impaired intestinal barrier functions.
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Affiliation(s)
- Xiao-Hu Zhao
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Kunming Medical University / Second Faculty of Clinical Medicine, Kunming Medical University, Kunming 650101, China
| | - Peinan Zhao
- Department of Medicine (Alfred Hospital), Central Clinical School, Monash University, 99 Commercial Rd, Melbourne, VIC 3004, Australia
| | - Zihao Deng
- Department of Medicine (Alfred Hospital), Central Clinical School, Monash University, 99 Commercial Rd, Melbourne, VIC 3004, Australia
| | - Ting Yang
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Kunming Medical University / Second Faculty of Clinical Medicine, Kunming Medical University, Kunming 650101, China
| | - Yu-Xing Qi
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Kunming Medical University / Second Faculty of Clinical Medicine, Kunming Medical University, Kunming 650101, China
| | - Li-Ya An
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Kunming Medical University / Second Faculty of Clinical Medicine, Kunming Medical University, Kunming 650101, China
| | - Da-Li Sun
- Department of Gastrointestinal Surgery, Second Affiliated Hospital of Kunming Medical University / Second Faculty of Clinical Medicine, Kunming Medical University, Kunming 650101, China
| | - Hai-Yu He
- Department of Gastroenterology, Second Affiliated Hospital of Kunming Medical University / Second Faculty of Clinical Medicine, Kunming Medical University, Kunming 650101, China
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11
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Hao Z, Huajun S, Zhen G, Yu X, Qian L, Ziling C, Zihao S, Qingqian X, Shujuan Z. AQP8 promotes glioma proliferation and growth, possibly through the ROS/PTEN/AKT signaling pathway. BMC Cancer 2023; 23:516. [PMID: 37280594 DOI: 10.1186/s12885-023-11025-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 05/30/2023] [Indexed: 06/08/2023] Open
Abstract
BACKGROUND The aquaporin (AQP) family of proteins has been implicated in the proliferation and growth of gliomas. Expression of AQP8 is higher in human glioma tissues than in normal brain tissues and is positively correlated with the pathological grade of glioma, suggesting that this protein is also involved in the proliferation and growth of glioma. However, the mechanism by which AQP8 promotes the proliferation and growth of glioma remains unclear. This study aimed to investigate the mechanism and role of abnormal AQP8 expression in glioma development. METHODS The dCas9-SAM and CRISPR/Cas9 techniques were used to construct viruses with overexpressed and knocked down AQP8, respectively, and infect A172 and U251 cell lines. The effects of AQP8 on the proliferation and growth of glioma and its mechanism via the intracellular reactive oxygen species (ROS) level were observed using cell clone, transwell, flow cytometry, Hoechst, western blotting, immunofluorescence, and real-time quantitative polymerase chain reaction assays. A nude mouse tumor model was also established. RESULTS Overexpression of AQP8 resulted in an increased number of cell clones and cell proliferation, enhanced cell invasion and migration, decreased apoptosis and phosphatase and tensin homolog (PTEN) expression, and increased phosphorylated serine/threonine protein kinase (p-AKT) expression and ROS level, whereas the AQP8 knockdown groups showed opposite results. In the animal experiments, the AQP8 overexpression group had higher tumor volume and weight, whereas the AQP8 knockdown group had lower tumor volume and weight compared with those parameters measured in the control group. CONCLUSIONS Our results preliminary suggest that AQP8 overexpression alters the ROS/PTEN/AKT signaling pathway, promoting the proliferation, migration, and invasion of gliomas. Therefore, AQP8 may be a potential therapeutic target in gliomas.
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Affiliation(s)
- Zhang Hao
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Sheng Huajun
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Guo Zhen
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xing Yu
- Department of Forensic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Liu Qian
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Cai Ziling
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Shen Zihao
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xia Qingqian
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Zhu Shujuan
- Department of Human Anatomy, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China.
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12
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Xiang M, Qian X, Han L, Wang H, Wang J, Liu W, Gu Y, Yao S, Yang J, Zhang Y, Peng Y, Zhang Z. Aquaporin-8 ameliorates hepatic steatosis through farnesoid X receptor in obese mice. iScience 2023; 26:106561. [PMID: 37123234 PMCID: PMC10130924 DOI: 10.1016/j.isci.2023.106561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/17/2022] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Aquaporin-8(AQP8), is a transmembrane channel protein that abounds in liver, which mainly promotes water transport, modulating bile acid formation. However, its role in hepatic lipid metabolism remains unclear. In this study, we found the expression of AQP8 was reduced in liver specimens of patients with NAFLD, high-fat diet (HFD)-induced mice and genetically obese db/db mice. Knockdown of AQP8 in hepatocytes exacerbated the intracellular lipid accumulation induced by free fatty acid (FFA) mixtures. In contrast, hepatic AQP8 overexpression activated farnesoid X receptor (FXR), inhibiting gene expression associated with lipogenesis, which further reduced intrahepatic triglyceride overload in obese mice. FXR knockout abrogated the ameliorating effect of AQP8 overexpression on NAFLD in mice. These findings indicate that AQP8 overexpression protects against fatty liver through activating the FXR pathway.
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Affiliation(s)
- Minqi Xiang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xu Qian
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Luyu Han
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Hui Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiqiu Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weiren Liu
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Shanghai, China
| | - Yanyun Gu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuangshuang Yao
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian Yang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yifei Zhang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Peng
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhiguo Zhang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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13
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Aquaporins Display a Diversity in their Substrates. J Membr Biol 2023; 256:1-23. [PMID: 35986775 DOI: 10.1007/s00232-022-00257-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 07/13/2022] [Indexed: 02/07/2023]
Abstract
Aquaporins constitute a family of transmembrane proteins that function to transport water and other small solutes across the cell membrane. Aquaporins family members are found in diverse life forms. Aquaporins share the common structural fold consisting of six transmembrane alpha helices with a central water-transporting channel. Four such monomers assemble together to form tetramers as their biological unit. Initially, aquaporins were discovered as water-transporting channels, but several studies supported their involvement in mediating the facilitated diffusion of different solutes. The so-called water channel is able to transport a variety of substrates ranging from a neutral molecule to a charged molecule or a small molecule to a bulky molecule or even a gas molecule. This article gives an overview of a diverse range of substrates conducted by aquaporin family members. Prime focus is on human aquaporins where aquaporins show a wide tissue distribution and substrate specificity leading to various physiological functions. This review also highlights the structural mechanisms leading to the transport of water and glycerol. More research is needed to understand how one common fold enables the aquaporins to transport an array of solutes.
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14
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Huang B, Jin L, Zhang L, Cui X, Zhang Z, Lu Y, Yu L, Ma T, Zhang H. Aquaporin-8 transports hydrogen peroxide to regulate granulosa cell autophagy. Front Cell Dev Biol 2022; 10:897666. [PMID: 36081911 PMCID: PMC9445271 DOI: 10.3389/fcell.2022.897666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 07/25/2022] [Indexed: 11/20/2022] Open
Abstract
Aquaporin-8 (AQP8), a member of the aquaporin family, is strongly expressed in follicular granulosa cells, which could affect the hormone secretion level in females. AQP8, as a membrane protein, could mediate H2O2 into cells, thereby triggering various biological events. The deficiency of Aqp8 increases female fertility, resulting from the decrease in follicular atresia. The low cell death rate is related to the apoptosis of granulosa cells. However, the mechanism by which AQP8 regulates the autophagy of granulosa cells remains unclear. Thus, this study aimed to explore the effect of AQP8 on autophagy in follicular atresia. We found that the expression of the autophagy marker light-chain protein 3 was significantly downregulated in the granulosa cells of Aqp8-knockout (Aqp8−/−) mice, compared with wild-type (Aqp8+/+) mice. Immunofluorescence staining and transmission electron microscopic examination indicated that the number of autophagosomes in the granulosa cells of Aqp8−/− mice decreased. Using a follicular granulosa cell autophagy model, namely a follicular atresia model, we verified that the concentration of H2O2 significantly increased during the autophagy of granulosa cells, consistent with the Aqp8 mRNA level. Intracellular H2O2 accumulation was modulated by endogenous AQP8 expression level, indicating that AQP8-mediated H2O2 was involved in the autophagy of granulosa cells. AQP8 deficiency impaired the elevation of H2O2 concentration through phosphorylated tyrosine activation. In addition, we carried out the analysis of transcriptome sequencing datasets in the ovary and found there were obvious differences in principal components, differentially expressed genes (DEGs) and KEGG pathways, which might be involved in AQP8-regulated follicular atresia. Taken together, these findings indicated that AQP8-mediated H2O2 transport could mediate the autophagy of granulosa cells. AQP8 might be a potential target for diseases related to ovarian insufficiency.
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Affiliation(s)
- Binbin Huang
- Department of Pathophysiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, MOE Key Laboratory of Population Health Across Life Cycle, NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Lingling Jin
- Department of Pathophysiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Luodan Zhang
- Department of Nephrology, Anhui Provincial Children’s Hospital, Hefei, Anhui, China
| | - Xiaolin Cui
- Department of Pathophysiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Zhen Zhang
- Department of Pathophysiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Yongqi Lu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, MOE Key Laboratory of Population Health Across Life Cycle, NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Lujia Yu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, MOE Key Laboratory of Population Health Across Life Cycle, NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Tonghui Ma
- Department of Pathophysiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - He Zhang
- Department of Pathophysiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
- *Correspondence: He Zhang,
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15
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Dogan SA, Giacchin G, Zito E, Viscomi C. Redox Signaling and Stress in Inherited Myopathies. Antioxid Redox Signal 2022; 37:301-323. [PMID: 35081731 DOI: 10.1089/ars.2021.0266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Significance: Reactive oxygen species (ROS) are highly reactive compounds that behave like a double-edged sword; they damage cellular structures and act as second messengers in signal transduction. Mitochondria and endoplasmic reticulum (ER) are interconnected organelles with a central role in ROS production, detoxification, and oxidative stress response. Skeletal muscle is the most abundant tissue in mammals and one of the most metabolically active ones and thus relies mainly on oxidative phosphorylation (OxPhos) to synthesize adenosine triphosphate. The impairment of OxPhos leads to myopathy and increased ROS production, thus affecting both redox poise and signaling. In addition, ROS enter the ER and trigger ER stress and its maladaptive response, which also lead to a myopathic phenotype with mitochondrial involvement. Here, we review the role of ROS signaling in myopathies due to either mitochondrial or ER dysfunction. Recent Advances: Relevant advances have been evolving over the last 10 years on the intricate ROS-dependent pathways that act as modifiers of the disease course in several myopathies. To this end, pathways related to mitochondrial biogenesis, satellite cell differentiation, and ER stress have been studied extensively in myopathies. Critical Issues: The analysis of the chemistry and the exact quantitation, as well as the localization of ROS, are still challenging due to the intrinsic labile nature of ROS and the technical limitations of their sensors. Future Directions: The mechanistic studies of the pathogenesis of mitochondrial and ER-related myopathies offer a unique possibility to discover novel ROS-dependent pathways. Antioxid. Redox Signal. 37, 301-323.
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Affiliation(s)
- Sukru Anil Dogan
- Department of Molecular Biology and Genetics, Center for Life Sciences and Technologies, Bogazici University, Istanbul, Turkey
| | - Giacomo Giacchin
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Ester Zito
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy.,Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Carlo Viscomi
- Department of Biomedical Sciences, University of Padova, Padova, Italy
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16
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Clavere NG, Alqallaf A, Rostron KA, Parnell A, Mitchell R, Patel K, Boateng SY. Inhibition of activin A receptor signalling attenuates age-related pathological cardiac remodelling. Dis Model Mech 2022; 15:275323. [PMID: 35380160 PMCID: PMC9118092 DOI: 10.1242/dmm.049424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/16/2022] [Indexed: 11/20/2022] Open
Abstract
In the heart, ageing is associated with DNA damage, oxidative stress, fibrosis and activation of the activin signalling pathway, leading to cardiac dysfunction. The cardiac effects of activin signalling blockade in progeria are unknown. This study investigated the cardiac effects of progeria induced by attenuated levels of Ercc1, which is required for DNA excision and repair, and the impact of activin signalling blockade using a soluble activin receptor type IIB (sActRIIB). DNA damage and oxidative stress were significantly increased in Ercc1Δ/− hearts, but were reduced by sActRIIB treatment. sActRIIB treatment improved cardiac systolic function and induced cardiomyocyte hypertrophy in Ercc1Δ/− hearts. RNA-sequencing analysis showed that in Ercc1Δ/− hearts, there was an increase in pro-oxidant and a decrease in antioxidant gene expression, whereas sActRIIB treatment reversed this effect. Ercc1Δ/− hearts also expressed higher levels of anti-hypertrophic genes and decreased levels of pro-hypertrophic ones, which were also reversed by sActRIIB treatment. These results show for the first time that inhibition of activin A receptor signalling attenuates cardiac dysfunction, pathological tissue remodelling and gene expression in Ercc1-deficient mice and presents a potentially novel therapeutic target for heart diseases. Summary: Attenuated DNA repair is associated with pathological cardiac remodelling and gene expression. Much of this phenotype is attenuated by inhibition of the activin signalling pathway using soluble activin receptor treatment.
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Affiliation(s)
- Nicolas G Clavere
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, Health and Life Sciences Building, University of Reading, Whiteknights, Reading RG6 6UB, UK
| | - Ali Alqallaf
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, Health and Life Sciences Building, University of Reading, Whiteknights, Reading RG6 6UB, UK
| | - Kerry A Rostron
- Centre for Inflammatory Disease, Department of Immunology and Inflammation, Imperial College London, Commonwealth Building, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
| | - Andrew Parnell
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, Health and Life Sciences Building, University of Reading, Whiteknights, Reading RG6 6UB, UK
| | - Robert Mitchell
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, Health and Life Sciences Building, University of Reading, Whiteknights, Reading RG6 6UB, UK
| | - Ketan Patel
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, Health and Life Sciences Building, University of Reading, Whiteknights, Reading RG6 6UB, UK
| | - Samuel Y Boateng
- Institute of Cardiovascular and Metabolic Research, School of Biological Sciences, Health and Life Sciences Building, University of Reading, Whiteknights, Reading RG6 6UB, UK
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17
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Yoneda M, Aklima J, Ohsawa I, Ohta Y. Effects of proton pumping on the structural rigidity of cristae in mitochondria. Arch Biochem Biophys 2022; 720:109172. [PMID: 35276212 DOI: 10.1016/j.abb.2022.109172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 02/08/2023]
Abstract
Mitochondria change their morphology and inner membrane structure depending on their activity. Since mitochondrial activity also depends on their structure, it is important to elucidate the interrelationship between the activity and structure of mitochondria. However, the mechanism by which mitochondrial activity affects the structure of cristae, the folded structure of the inner membrane, is not well understood. In this study, the effect of the mitochondrial activity on the cristae structure was investigated by examining the structural rigidity of cristae. Taking advantage of the fact that unfolding of cristae induces mitochondrial swelling, we investigated the relationship between mitochondrial activity and the susceptibility to swelling. The swelling of individual isolated mitochondria exposed to a hypotonic solution was observed with an optical microscope. The presence of respiratory substrates (malate and glutamate) increased the percentage of mitochondria that underwent swelling, and the further addition of rotenone or KCN (inhibitors of proton pumps) reversed the increase. In the absence of respiratory substrates, acidification of the buffer surrounding the mitochondria also increased the percentage of swollen mitochondria. These observations suggest that acidification of the outer surface of inner membranes, especially intracristal space, by proton translocation from the matrix to the intracristal space, decreases the structural rigidity of the cristae. This interpretation was verified by the observation that ADP or CCCP, which induces proton re-entry to the matrix, suppressed the mitochondrial swelling in the presence of respiratory substrates. The addition of CCCP to the cells induced a morphological change in mitochondria from an initial elongated structure to a largely curved structure at pH 7.4, but there were no morphological changes when the pH of the cytosol dropped to 6.2. These results suggest that a low pH in the intracristal space may be helpful in maintaining the elongated structure of mitochondria. The present study shows that proton pumping by the electron transfer chain is the mechanism underlying mitochondrial morphology and the flexibility of cristae structure.
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Affiliation(s)
- Mayu Yoneda
- Division of Biotechnology and Life Sciences, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan
| | - Jannatul Aklima
- Division of Biotechnology and Life Sciences, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan; Department of Biochemistry & Molecular Biology, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Ikuroh Ohsawa
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan
| | - Yoshihiro Ohta
- Division of Biotechnology and Life Sciences, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan.
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18
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Wagner K, Unger L, Salman MM, Kitchen P, Bill RM, Yool AJ. Signaling Mechanisms and Pharmacological Modulators Governing Diverse Aquaporin Functions in Human Health and Disease. Int J Mol Sci 2022; 23:1388. [PMID: 35163313 PMCID: PMC8836214 DOI: 10.3390/ijms23031388] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 02/07/2023] Open
Abstract
The aquaporins (AQPs) are a family of small integral membrane proteins that facilitate the bidirectional transport of water across biological membranes in response to osmotic pressure gradients as well as enable the transmembrane diffusion of small neutral solutes (such as urea, glycerol, and hydrogen peroxide) and ions. AQPs are expressed throughout the human body. Here, we review their key roles in fluid homeostasis, glandular secretions, signal transduction and sensation, barrier function, immunity and inflammation, cell migration, and angiogenesis. Evidence from a wide variety of studies now supports a view of the functions of AQPs being much more complex than simply mediating the passive flow of water across biological membranes. The discovery and development of small-molecule AQP inhibitors for research use and therapeutic development will lead to new insights into the basic biology of and novel treatments for the wide range of AQP-associated disorders.
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Affiliation(s)
- Kim Wagner
- School of Biomedicine, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Lucas Unger
- College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK; (L.U.); (P.K.)
| | - Mootaz M. Salman
- Department of Physiology Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK;
- Oxford Parkinson’s Disease Centre, University of Oxford, South Parks Road, Oxford OX1 3QX, UK
| | - Philip Kitchen
- College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK; (L.U.); (P.K.)
| | - Roslyn M. Bill
- College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK; (L.U.); (P.K.)
| | - Andrea J. Yool
- School of Biomedicine, University of Adelaide, Adelaide, SA 5005, Australia;
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19
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Chemogenetic approaches to dissect the role of H2O2 in redox-dependent pathways using genetically encoded biosensors. Biochem Soc Trans 2022; 50:335-345. [PMID: 35015078 DOI: 10.1042/bst20210506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 11/17/2022]
Abstract
Chemogenetic tools are recombinant enzymes that can be targeted to specific organelles and tissues. The provision or removal of the enzyme substrate permits control of its biochemical activities. Yeast-derived enzyme D-amino acid oxidase (DAAO) represents the first of its kind for a substrate-based chemogenetic approach to modulate H2O2 concentrations within cells. Combining these powerful enzymes with multiparametric imaging methods exploiting genetically encoded biosensors has opened new lines of investigations in life sciences. In recent years, the chemogenetic DAAO approach has proven beneficial to establish a new role for (patho)physiological oxidative stress on redox-dependent signaling and metabolic pathways in cultured cells and animal model systems. This mini-review covers established or emerging methods and assesses newer approaches exploiting chemogenetic tools combined with genetically encoded biosensors.
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Waldeck-Weiermair M, Yadav S, Spyropoulos F, Krüger C, Pandey AK, Michel T. Dissecting in vivo and in vitro redox responses using chemogenetics. Free Radic Biol Med 2021; 177:360-369. [PMID: 34752919 PMCID: PMC8639655 DOI: 10.1016/j.freeradbiomed.2021.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/08/2021] [Accepted: 11/04/2021] [Indexed: 02/03/2023]
Abstract
Hydrogen peroxide (H2O2) is the most abundant reactive oxygen species (ROS) within mammalian cells. At low concentrations, H2O2 serves as a versatile cell signaling molecule that mediates vital physiological functions. Yet at higher concentrations, H2O2 can be a toxic molecule by promoting pathological oxidative stress in cells and tissues. Within normal cells, H2O2 is differentially distributed in a variety of subcellular locales. Moreover, many redox-active enzymes and their substrates are themselves differentially distributed within cells. Numerous reports have described the biological and biochemical consequences of adding exogenous H2O2 to cultured cells and tissues, but many of these observations are difficult to interpret: the effects of exogenous H2O2 do not necessarily replicate the cellular responses to endogenous H2O2. In recent years, chemogenetic approaches have been developed to dynamically regulate the abundance of H2O2 in specific subcellular locales. Chemogenetic approaches have been applied in multiple experimental systems, ranging from in vitro studies on the intracellular transport and metabolism of H2O2, all the way to in vivo studies that generate oxidative stress in specific organs in living animals. These chemogenetic approaches have exploited a yeast-derived d-amino acid oxidase (DAAO) that synthesizes H2O2 only in the presence of its d-amino acid substrate. DAAO can be targeted to various subcellular locales, and can be dynamically activated by the addition or withdrawal of its d-amino acid substrate. In addition, recent advances in the development of highly sensitive genetically encoded H2O2 biosensors are providing a better understanding of both physiological and pathological oxidative pathways. This review highlights several applications of DAAO as a chemogenetic tool across a wide range of biological systems, from analyses of subcellular H2O2 metabolism in cells to the development of new disease models caused by oxidative stress in vivo.
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Affiliation(s)
- Markus Waldeck-Weiermair
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA; Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010, Graz, Austria
| | - Shambhu Yadav
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Fotios Spyropoulos
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA; Department of Pediatric Newborn Medicine, Harvard Medical School, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, USA
| | - Christina Krüger
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Arvind K Pandey
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA
| | - Thomas Michel
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA.
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Krüger C, Jörns A, Kaynert J, Waldeck-Weiermair M, Michel T, Elsner M, Lenzen S. The importance of aquaporin-8 for cytokine-mediated toxicity in rat insulin-producing cells. Free Radic Biol Med 2021; 174:135-143. [PMID: 34363947 DOI: 10.1016/j.freeradbiomed.2021.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/20/2021] [Accepted: 08/03/2021] [Indexed: 12/29/2022]
Abstract
Aquaporin-8 (AQP8) is a peroxiporin, a transmembrane water and hydrogen peroxide (H2O2) transport protein expressed in the mitochondrial and plasma membranes of pancreatic β-cells. AQP8 protein expression is low under physiological conditions, but it increases after cytokine exposure both, in vitro and in vivo, possibly related to a NF-κB consensus sequence in the promoter. AQP8 knockdown (KD) insulin-producing RINm5F cells are particularly susceptible to cytokine-mediated oxidative stress. Cytokine (a mixture of IL-1β, TNF-α, and IFN-γ) treated AQP8 KD cells exhibited pronounced sensitivity to reactive oxygen and nitrogen species (ROS and RNS), resulting in a significant loss of β-cell viability due to enhanced toxicity of the increased concentrations of H2O2 and hydroxyl radicals (●OH) in mitochondria of AQP8 KD cells. This viability loss went along with increased caspase activities, reduced nitrite concentration (representative of nitric oxide (NO●) accumulation) and increased lipid peroxidation. The explanation for the increased toxicity of the proinflammatory cytokines in AQP8 KD cells resides in the fact that efflux of the H2O2 generated during oxidative stress in the β-cell mitochondria is hampered through the loss of the peroxiporin channels in the mitochondrial membranes of the AQP8 KD cells. The increased proinflammatory cytokine toxicity due to loss of AQP8 expression in the KD β-cell mitochondria is thus the result of increased rates of apoptosis. This decreased cell viability is caused by increased levels of oxidative stress along with a ferroptosis-mediated cell death component due to decreased NO● generation.
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Affiliation(s)
- Christina Krüger
- Institute of Clinical Biochemistry, Hannover Medical School, 30623, Hannover, Germany
| | - Anne Jörns
- Institute of Clinical Biochemistry, Hannover Medical School, 30623, Hannover, Germany
| | - Jonas Kaynert
- Institute of Clinical Biochemistry, Hannover Medical School, 30623, Hannover, Germany
| | - Markus Waldeck-Weiermair
- Cardiovascular Division, Brigham and Women's Hospital, And Harvard Medical School, Boston, MA, 02115, USA
| | - Thomas Michel
- Cardiovascular Division, Brigham and Women's Hospital, And Harvard Medical School, Boston, MA, 02115, USA
| | - Matthias Elsner
- Institute of Clinical Biochemistry, Hannover Medical School, 30623, Hannover, Germany
| | - Sigurd Lenzen
- Institute of Clinical Biochemistry, Hannover Medical School, 30623, Hannover, Germany; Institute of Experimental Diabetes Research, Hannover Medical School, 30623, Hannover, Germany.
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Secilmis M, Altun HY, Pilic J, Erdogan YC, Cokluk Z, Ata BN, Sevimli G, Zaki AG, Yigit EN, Öztürk G, Malli R, Eroglu E. A Co-Culture-Based Multiparametric Imaging Technique to Dissect Local H 2O 2 Signals with Targeted HyPer7. BIOSENSORS 2021; 11:338. [PMID: 34562927 PMCID: PMC8466187 DOI: 10.3390/bios11090338] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 01/19/2023]
Abstract
Multispectral live-cell imaging is an informative approach that permits detecting biological processes simultaneously in the spatial and temporal domain by exploiting spectrally distinct biosensors. However, the combination of fluorescent biosensors with distinct spectral properties such as different sensitivities, and dynamic ranges can undermine accurate co-imaging of the same analyte in different subcellular locales. We advanced a single-color multiparametric imaging method, which allows simultaneous detection of hydrogen peroxide (H2O2) in multiple cell locales (nucleus, cytosol, mitochondria) using the H2O2 biosensor HyPer7. Co-culturing of endothelial cells stably expressing differentially targeted HyPer7 biosensors paved the way for co-imaging compartmentalized H2O2 signals simultaneously in neighboring cells in a single experimental setup. We termed this approach COMPARE IT, which is an acronym for co-culture-based multiparametric imaging technique. Employing this approach, we detected lower H2O2 levels in mitochondria of endothelial cells compared to the cell nucleus and cytosol under basal conditions. Upon administering exogenous H2O2, the cytosolic and nuclear-targeted probes displayed similarly slow and moderate HyPer7 responses, whereas the mitochondria-targeted HyPer7 signal plateaued faster and reached higher amplitudes. Our results indicate striking differences in mitochondrial H2O2 accumulation of endothelial cells. Here, we present the method's potential as a practicable and informative multiparametric live-cell imaging technique.
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Affiliation(s)
- Melike Secilmis
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, 34956 Istanbul, Turkey; (M.S.); (H.Y.A.); (Y.C.E.); (Z.C.); (B.N.A.); (G.S.); (A.G.Z.)
| | - Hamza Yusuf Altun
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, 34956 Istanbul, Turkey; (M.S.); (H.Y.A.); (Y.C.E.); (Z.C.); (B.N.A.); (G.S.); (A.G.Z.)
| | - Johannes Pilic
- Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, 8036 Graz, Austria;
| | - Yusuf Ceyhun Erdogan
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, 34956 Istanbul, Turkey; (M.S.); (H.Y.A.); (Y.C.E.); (Z.C.); (B.N.A.); (G.S.); (A.G.Z.)
- Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, 8036 Graz, Austria;
| | - Zeynep Cokluk
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, 34956 Istanbul, Turkey; (M.S.); (H.Y.A.); (Y.C.E.); (Z.C.); (B.N.A.); (G.S.); (A.G.Z.)
| | - Busra Nur Ata
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, 34956 Istanbul, Turkey; (M.S.); (H.Y.A.); (Y.C.E.); (Z.C.); (B.N.A.); (G.S.); (A.G.Z.)
| | - Gulsah Sevimli
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, 34956 Istanbul, Turkey; (M.S.); (H.Y.A.); (Y.C.E.); (Z.C.); (B.N.A.); (G.S.); (A.G.Z.)
| | - Asal Ghaffari Zaki
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, 34956 Istanbul, Turkey; (M.S.); (H.Y.A.); (Y.C.E.); (Z.C.); (B.N.A.); (G.S.); (A.G.Z.)
| | - Esra Nur Yigit
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810 Istanbul, Turkey; (E.N.Y.); (G.Ö.)
- Department of Biotechnology, Gebze Technical University, 41400 Kocaeli, Turkey
| | - Gürkan Öztürk
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810 Istanbul, Turkey; (E.N.Y.); (G.Ö.)
- Physiology Department, International School of Medicine, Istanbul Medipol University, 34810 Istanbul, Turkey
| | - Roland Malli
- Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, 8036 Graz, Austria;
- BioTechMed Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Emrah Eroglu
- Molecular Biology, Genetics and Bioengineering Program, Sabanci University, 34956 Istanbul, Turkey; (M.S.); (H.Y.A.); (Y.C.E.); (Z.C.); (B.N.A.); (G.S.); (A.G.Z.)
- Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, 8036 Graz, Austria;
- Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, 34810 Istanbul, Turkey; (E.N.Y.); (G.Ö.)
- Nanotechnology Research and Application Center, Sabanci University, 34956 Istanbul, Turkey
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Galli M, Hameed A, Żbikowski A, Zabielski P. Aquaporins in insulin resistance and diabetes: More than channels! Redox Biol 2021; 44:102027. [PMID: 34090243 PMCID: PMC8182305 DOI: 10.1016/j.redox.2021.102027] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/09/2021] [Accepted: 05/24/2021] [Indexed: 12/12/2022] Open
Abstract
Aquaporins (AQPs) are part of the family of the integral membrane proteins. Their function is dedicated to the transport of water, glycerol, ammonia, urea, H2O2, and other small molecules across the biological membranes. Although for many years they were scarcely considered, AQPs have a relevant role in the development of many diseases. Recent discoveries suggest, that AQPs may play an important role in the process of fat accumulation and regulation of oxidative stress, two crucial aspects of insulin resistance and type-2 diabetes (T2D). Insulin resistance (IR) and T2D are multi-faceted systemic diseases with multiple connections to obesity and other comorbidities such as hypertension, dyslipidemia and metabolic syndrome. Both IR and T2D transcends different tissues and organs, creating the maze of mutual relationships between adipose fat depots, skeletal muscle, liver and other insulin-sensitive organs. AQPs with their heterogenous properties, distinctive tissue distribution and documented involvement in both the lipid metabolism and regulation of the oxidative stress appear to be feasible candidates in the search for the explanation to this third-millennium plague. A lot of research has been assigned to adipose tissue AQP7 and liver tissue AQP9, clarifying their relationship and coordinated work in the induction of hepatic insulin resistance. Novel research points also to other aquaporins, such as AQP11 which may be associated with the induction of insulin resistance and T2D through its involvement in hydrogen peroxide transport. In this review we collected recent discoveries in the field of AQP's involvement in the insulin resistance and T2D. Novel paths which connect AQPs with metabolic disorders can give new fuel to the research on obesity, insulin resistance and T2D - one of the most worrying problems of the modern society. Presentation of the current knowledge on the involvement of aquaporins in disease state. Overview on latest research regarding insulin resistance and AQPs. Conceptualisation of an AQPs network involved regulation of lipid-related metabolism.
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Affiliation(s)
- Mauro Galli
- Department of Medical Biology, Medical University of Bialystok, 15-089, Bialystok, Poland.
| | - Ahsan Hameed
- Clinical Research Center, Medical University of Bialystok, 15-089, Bialystok, Poland.
| | - Arkadiusz Żbikowski
- Department of Medical Biology, Medical University of Bialystok, 15-089, Bialystok, Poland.
| | - Piotr Zabielski
- Department of Medical Biology, Medical University of Bialystok, 15-089, Bialystok, Poland.
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