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Huang Q, Ru Y, Luo Y, Luo X, Liu D, Ma Y, Zhou X, Linghu M, Xu W, Gao F, Huang Y. Identification of a targeted ACSL4 inhibitor to treat ferroptosis-related diseases. SCIENCE ADVANCES 2024; 10:eadk1200. [PMID: 38552012 PMCID: PMC10980261 DOI: 10.1126/sciadv.adk1200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 02/23/2024] [Indexed: 04/01/2024]
Abstract
Ferroptosis is a form of iron-dependent, lipid peroxidation-driven regulatory cell death that has been implicated in the pathogenesis of multiple diseases, including organ injury, ischemia/reperfusion, and neurodegenerative diseases. However, inhibitors that directly and specifically target ferroptosis are not yet available. Here, we identify the compound AS-252424 (AS) as a potent ferroptosis inhibitor through kinase inhibitor library screening. Our results show that AS effectively inhibits lipid peroxidation and ferroptosis in both human and mouse cells. Mechanistically, AS directly binds to the glutamine 464 of ACSL4 to inhibit its enzymatic activity, resulting in the suppression of lipid peroxidation and ferroptosis. By using nanoparticle-based delivery systems, treatment with AS-loaded nanoparticles effectively alleviate ferroptosis-mediated organ injury in mouse models, including kidney ischemia/reperfusion injury and acute liver injury (ALI). Thus, our results identify that AS is a specific and targeted inhibitor of ACSL4 with remarkable antiferroptosis function, providing a potential therapeutic for ferroptosis-related diseases.
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Affiliation(s)
- Qian Huang
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Yi Ru
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Yingli Luo
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Xianyu Luo
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Didi Liu
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Yinchu Ma
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Xinru Zhou
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Maoyuan Linghu
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Wen Xu
- Neurology Department, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Fei Gao
- Department of Critical Care Medicine, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People’s Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, China
| | - Yi Huang
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
- Insitute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei, 230601 China
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2
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Dai R, Yang S, Pang T, Tian M, Wang H, Zhang D, Wu Y, Kondo H, Andika IB, Kang Z, Sun L. Identification of a negative-strand RNA virus with natural plant and fungal hosts. Proc Natl Acad Sci U S A 2024; 121:e2319582121. [PMID: 38483998 PMCID: PMC10962957 DOI: 10.1073/pnas.2319582121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/29/2024] [Indexed: 03/19/2024] Open
Abstract
The presence of viruses that spread to both plant and fungal populations in nature has posed intriguingly scientific question. We found a negative-strand RNA virus related to members of the family Phenuiviridae, named Valsa mali negative-strand RNA virus 1 (VmNSRV1), which induced strong hypovirulence and was prevalent in a population of the phytopathogenic fungus of apple Valsa canker (Valsa mali) infecting apple orchards in the Shaanxi Province of China. Intriguingly, VmNSRV1 encodes a protein with a viral cell-to-cell movement function in plant tissue. Mechanical leaf inoculation showed that VmNSRV1 could systemically infect plants. Moreover, VmNSRV1 was detected in 24 out of 139 apple trees tested in orchards in Shaanxi Province. Fungal inoculation experiments showed that VmNSRV1 could be bidirectionally transmitted between apple plants and V. mali, and VmNSRV1 infection in plants reduced the development of fungal lesions on leaves. Additionally, the nucleocapsid protein encoded by VmNSRV1 is associated with and rearranged lipid droplets in both fungal and plant cells. VmNSRV1 represents a virus that has adapted and spread to both plant and fungal hosts and shuttles between these two organisms in nature (phyto-mycovirus) and is potential to be utilized for the biocontrol method against plant fungal diseases. This finding presents further insights into the virus evolution and adaptation encompassing both plant and fungal hosts.
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Affiliation(s)
- Ruoyin Dai
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production and College of Plant Protection, Northwest A&F University, Yangling712100, China
| | - Shian Yang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production and College of Plant Protection, Northwest A&F University, Yangling712100, China
| | - Tianxing Pang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production and College of Plant Protection, Northwest A&F University, Yangling712100, China
| | - Mengyuan Tian
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production and College of Plant Protection, Northwest A&F University, Yangling712100, China
| | - Hao Wang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production and College of Plant Protection, Northwest A&F University, Yangling712100, China
| | - Dong Zhang
- Yangling Sub-Center of National Center for Apple Improvement and College of Horticulture, Northwest A&F University, Yangling712100, China
| | - Yunfeng Wu
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production and College of Plant Protection, Northwest A&F University, Yangling712100, China
| | - Hideki Kondo
- Institute of Plant Science and Resources, Okayama University, Kurashiki710-0046, Japan
| | - Ida Bagus Andika
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao266109, China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production and College of Plant Protection, Northwest A&F University, Yangling712100, China
| | - Liying Sun
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production and College of Plant Protection, Northwest A&F University, Yangling712100, China
- Institute of Plant Science and Resources, Okayama University, Kurashiki710-0046, Japan
- Institute of Future Agriculture, Northwest A&F University, Yangling712100, China
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Zhu JY, Tang M, Li H, Shi YL, Li YM, Li YH, Ma XC, Duan QL, Mei YH, He HW, Zhang N, Peng ZG, Song DQ. Design, synthesis and triglyceride-lowering activity of tricyclic matrine derivatives for the intervention of non-alcoholic fatty liver disease. Bioorg Chem 2024; 142:106925. [PMID: 37890213 DOI: 10.1016/j.bioorg.2023.106925] [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: 07/24/2023] [Revised: 10/09/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023]
Abstract
Thirty new tricyclicmatrinic derivatives were successively synthesized and evaluated for their inhibitory activity on the accumulation of triglycerides (TG) in AML12 cells, using 12 N-m-trifluoromethylbenzenesulfonyl matrine (1) as the hit compound. Among the analogues, compound 7n possessing 11-trimethylbutylamine quaternary exerted the highest in vitro TG-lowering potency, as well as a good safety profile. 7n significantly attenuated the hepatic injury and steatosis, and ameliorated dyslipidemia and dysglycemia in the mice with non-alcoholic fatty liver disease (NAFLD) induced by a high-fat diet. Primary mechanism study revealed that upregulation of peroxisome proliferator-activated receptors α (PPARα)-carnitine palmitoyltransferase 1A (CPT1A) pathway mediated the efficacy of 7n. Our study provides powerful information for developing this kind of compound into a new class of anti-NAFLD candidates, and compound 7n is worthy of further investigation as an ideal lead compound.
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Affiliation(s)
- Jing-Yang Zhu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Mei Tang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Hu Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yu-Long Shi
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yi-Ming Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Ying-Hong Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Xi-Can Ma
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Qiong-Lu Duan
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yu-Heng Mei
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Hong-Wei He
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Na Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Zong-Gen Peng
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Dan-Qing Song
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
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Li H, Seessle J, Staffer S, Tuma-Kellner S, Poschet G, Herrmann T, Chamulitrat W. FATP4 deletion in liver cells induces elevation of extracellular lipids via metabolic channeling towards triglycerides and lipolysis. Biochem Biophys Res Commun 2023; 687:149161. [PMID: 37931418 DOI: 10.1016/j.bbrc.2023.149161] [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: 08/14/2023] [Revised: 10/13/2023] [Accepted: 10/26/2023] [Indexed: 11/08/2023]
Abstract
Evidence from mice with global deletion of fatty-acid transport protein4 (FATP4) indicates its role on β-oxidation and triglycerides (TG) metabolism. We reported that plasma glycerol and free fatty acids (FA) were increased in liver-specific Fatp4 deficient (L-FATP4-/-) mice under dietary stress. We hypothesized that FATP4 may mediate hepatocellular TG lipolysis. Here, we demonstrated that L-FATP4-/- mice showed an increase in these blood lipids, liver TG, and subcutaneous fat weights. We therefore studied TG metabolism in response to oleate treatment in two experimental models using FATP4-knockout HepG2 (HepKO) cells and L-FATP4-/- hepatocytes. Both FATP4-deificient liver cells showed a significant decrease in β-oxidation products by ∼30-35% concomitant with marked upregulation of CD36, FATP2, and FATP5 as well as lipoprotein microsomal-triglyceride-transfer protein genes. By using 13C3D5-glycerol, HepKO cells displayed an increase in metabolically labelled TG species which were further increased with oleate treatment. This increase was concomitant with a step-wise elevation of TG in cells and supernatants as well as the secretion of cholesterol very low-density and high-density lipoproteins. Upon analyzing TG lipolytic enzymes, both mutant liver cells showed marked upregulated expression of hepatic lipase, while that of hormone-sensitive lipase and adipose-triglyceride lipase was downregulated. Lipolysis measured by extracellular glycerol and free FA was indeed increased in mutant cells, and this event was exacerbated by oleate treatment. Taken together, FATP4 deficiency in liver cells led to a metabolic shift from β-oxidation towards lipolysis-directed TG and lipoprotein secretion, which is in line with an association of FATP4 polymorphisms with blood lipids.
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Affiliation(s)
- Huili Li
- Department of Internal Medicine IV, University Hospital Heidelberg, 69120, Heidelberg, Germany; Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430022, Wuhan, Hubei, China
| | - Jessica Seessle
- Department of Internal Medicine IV, University Hospital Heidelberg, 69120, Heidelberg, Germany
| | - Simone Staffer
- Department of Internal Medicine IV, University Hospital Heidelberg, 69120, Heidelberg, Germany
| | - Sabine Tuma-Kellner
- Department of Internal Medicine IV, University Hospital Heidelberg, 69120, Heidelberg, Germany
| | - Gernot Poschet
- Metabolomics Core Technology Platform, Centre for Organismal Studies, University of Heidelberg, 69120, Heidelberg, Germany
| | - Thomas Herrmann
- Westkuesten Hospital, Esmarchstraße 50, 25746, Heide, Germany
| | - Walee Chamulitrat
- Department of Internal Medicine IV, University Hospital Heidelberg, 69120, Heidelberg, Germany.
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5
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Ding K, Liu C, Li L, Yang M, Jiang N, Luo S, Sun L. Acyl-CoA synthase ACSL4: an essential target in ferroptosis and fatty acid metabolism. Chin Med J (Engl) 2023; 136:2521-2537. [PMID: 37442770 PMCID: PMC10617883 DOI: 10.1097/cm9.0000000000002533] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Indexed: 07/15/2023] Open
Abstract
ABSTRACT Long-chain acyl-coenzyme A (CoA) synthase 4 (ACSL4) is an enzyme that esterifies CoA into specific polyunsaturated fatty acids, such as arachidonic acid and adrenic acid. Based on accumulated evidence, the ACSL4-catalyzed biosynthesis of arachidonoyl-CoA contributes to the execution of ferroptosis by triggering phospholipid peroxidation. Ferroptosis is a type of programmed cell death caused by iron-dependent peroxidation of lipids; ACSL4 and glutathione peroxidase 4 positively and negatively regulate ferroptosis, respectively. In addition, ACSL4 is an essential regulator of fatty acid (FA) metabolism. ACSL4 remodels the phospholipid composition of cell membranes, regulates steroidogenesis, and balances eicosanoid biosynthesis. In addition, ACSL4-mediated metabolic reprogramming and antitumor immunity have attracted much attention in cancer biology. Because it facilitates the cross-talk between ferroptosis and FA metabolism, ACSL4 is also a research hotspot in metabolic diseases and ischemia/reperfusion injuries. In this review, we focus on the structure, biological function, and unique role of ASCL4 in various human diseases. Finally, we propose that ACSL4 might be a potential therapeutic target.
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Affiliation(s)
- Kaiyue Ding
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, Hunan 410000, China
| | - Chongbin Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, Hunan 410000, China
| | - Li Li
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, Hunan 410000, China
| | - Ming Yang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, Hunan 410000, China
| | - Na Jiang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, Hunan 410000, China
| | - Shilu Luo
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, Hunan 410000, China
| | - Lin Sun
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410000, China
- Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, Hunan 410000, China
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6
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Ramakrishnan S, Mooli RGR, Han Y, Fiorenza E, Kumar S, Bello F, Nallanagulagari A, Karra S, Teng L, Jurczak M. Hepatic ketogenesis regulates lipid homeostasis via ACSL1-mediated fatty acid partitioning. RESEARCH SQUARE 2023:rs.3.rs-3147009. [PMID: 37503004 PMCID: PMC10371136 DOI: 10.21203/rs.3.rs-3147009/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Liver-derived ketone bodies play a crucial role in fasting energy homeostasis by fueling the brain and peripheral tissues. Ketogenesis also acts as a conduit to remove excess acetyl-CoA generated from fatty acid oxidation and protects against diet-induced hepatic steatosis. Surprisingly, no study has examined the role of ketogenesis in fasting-associated hepatocellular lipid metabolism. Ketogenesis is driven by the rate-limiting mitochondrial enzyme 3-hydroxymethylglutaryl CoA synthase (HMGCS2) abundantly expressed in the liver. Here, we show that ketogenic insufficiency via disruption of hepatic HMGCS2 exacerbates liver steatosis in fasted chow and high-fat-fed mice. We found that the hepatic steatosis is driven by increased fatty acid partitioning to the endoplasmic reticulum (ER) for re-esterification via acyl-CoA synthetase long-chain family member 1 (ACSL1). Mechanistically, acetyl-CoA accumulation from impaired hepatic ketogenesis is responsible for the elevated translocation of ACSL1 to the ER. Moreover, we show increased ER-localized ACSL1 and re-esterification of lipids in human NASH displaying impaired hepatic ketogenesis. Finally, we show that L-carnitine, which buffers excess acetyl-CoA, decreases the ER-associated ACSL1 and alleviates hepatic steatosis. Thus, ketogenesis via controlling hepatocellular acetyl-CoA homeostasis regulates lipid partitioning and protects against hepatic steatosis.
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7
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Influence of the Fatty Acid Metabolism on the Mode of Action of a Cisplatin(IV) Complex with Phenylbutyrate as Axial Ligands. Pharmaceutics 2023; 15:pharmaceutics15020677. [PMID: 36839999 PMCID: PMC9967619 DOI: 10.3390/pharmaceutics15020677] [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: 01/28/2023] [Revised: 02/08/2023] [Accepted: 02/11/2023] [Indexed: 02/19/2023] Open
Abstract
For a variety of cancer types, platinum compounds are still among the best treatment options. However, their application is limited by side effects and drug resistance. Consequently, multi-targeted platinum(IV) prodrugs that target specific traits of the malignant tissue are interesting new candidates. Recently, cisPt(PhB)2 was synthesized which, upon reduction in the malignant tissue, releases phenylbutyrate (PhB), a metabolically active fatty acid analog, in addition to cisplatin. In this study, we in-depth investigated the anticancer properties of this new complex in cell culture and in mouse allograft experiments. CisPt(PhB)2 showed a distinctly improved anticancer activity compared to cisplatin as well as to PhB alone and was able to overcome various frequently occurring drug resistance mechanisms. Furthermore, we observed that differences in the cellular fatty acid metabolism and mitochondrial activity distinctly impacted the drug's mode of action. Subsequent analyses revealed that "Warburg-like" cells, which are characterized by deficient mitochondrial function and fatty acid catabolism, are less capable of coping with cisPt(PhB)2 leading to rapid induction of a non-apoptotic form of cell death. Summarizing, cisPt(PhB)2 is a new orally applicable platinum(IV) prodrug with promising activity especially against cisplatin-resistant cancer cells with "Warburg-like" properties.
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8
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Dominguez SR, Whiles S, Deobald KN, Kawula T. Francisella tularensis Exploits AMPK Activation to Harvest Host-Derived Nutrients Liberated from Host Lipolysis. Infect Immun 2022; 90:e0015522. [PMID: 35916521 PMCID: PMC9387300 DOI: 10.1128/iai.00155-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022] Open
Abstract
Francisella tularensis is a zoonotic, facultative intracellular bacterial pathogen that replicates in a variety of cell types during infection. Following entry into the cell and phagosome escape, the bacterium replicates rapidly in the cytoplasm. F. tularensis intracellular growth depends on the availability of metabolizable essential nutrients to support replication. However, the mechanism by which metabolizable nutrients become available to the bacterium in the intracellular environment is not fully understood. We found that F. tularensis-infected cells had significantly smaller and fewer lipid droplets than uninfected cells. Inhibition of triacylglycerol degradation significantly reduced bacterial growth, whereas inhibition of triacylglycerol formation did not reduce bacterial growth, suggesting that triacylglycerols sequestered within lipid droplets are important nutrient sources for F. tularensis. We found that F. tularensis-infected cells had increased activation of lipolysis and the upstream regulatory protein AMP protein kinase (AMPK). These data suggest that F. tularensis exploits AMPK activation and lipid metabolism to use host-derived nutrients. Finally, we found that AMPK activation is correlated with an increased bacterial burden, which suggests that it is a host-mediated response to nutrient starvation that results from increased bacterial replication. Altogether, we conclude that F. tularensis exploits AMPK activation to access nutrients sequestered in lipid droplets, specifically glycerol and fatty acids, to undergo efficient bacterial replication and cause successful infection.
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Affiliation(s)
- Sedelia R. Dominguez
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
- School of Molecular Biosciences, Washington State University, Pullman, Washington, USA
| | - Shannon Whiles
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
| | - Kelly N. Deobald
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
| | - Thomas Kawula
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
- School of Molecular Biosciences, Washington State University, Pullman, Washington, USA
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9
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Tran A, He W, Chen JTC, Wellhauser L, Hopperton KE, Bazinet RP, Belsham DD. Palmitate-mediated induction of neuropeptide Y expression occurs through intracellular metabolites and not direct exposure to proinflammatory cytokines. J Neurochem 2021; 159:574-589. [PMID: 34482548 DOI: 10.1111/jnc.15504] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/19/2021] [Accepted: 08/28/2021] [Indexed: 12/11/2022]
Abstract
A contributing factor to the development of obesity is the consumption of a diet high in saturated fatty acids, such as palmitate. These fats induce hypothalamic neuroinflammation, which dysregulates neuronal function and induces orexigenic neuropeptide Y (Npy) to promote food intake. An inflammatory cytokine array identified multiple candidates that could mediate palmitate-induced up-regulation of Npy mRNA levels. Of these, visfatin or nicotinamide phosphoribosyltransferase (NAMPT), macrophage migratory inhibitory factor (MIF), and IL-17F were chosen for further study. Direct treatment of the neuropeptide Y/agouti-related peptide (NPY/AgRP)-expressing mHypoE-46 neuronal cell line with the aforementioned cytokines demonstrated that visfatin could directly induce Npy mRNA expression. Preventing the intracellular metabolism of palmitate through long-chain acyl-CoA synthetase (ACSL) inhibition was sufficient to block the palmitate-mediated increase in Npy gene expression. Furthermore, thin-layer chromatography revealed that in neurons, palmitate is readily incorporated into ceramides and defined species of phospholipids. Exogenous C16 ceramide, dipalmitoyl-phosphatidylcholine, and dipalmitoyl-phosphatidylethanolamine were sufficient to significantly induce Npy expression. This study suggests that the intracellular metabolism of palmitate and elevation of metabolites, including ceramide and phospholipids, are responsible for the palmitate-mediated induction of the potent orexigen Npy. Furthermore, this suggests that the regulation of Npy expression is less reliant on inflammatory cytokines per se than palmitate metabolites in a model of NPY/AgRP neurons. These lipid species likely induce detrimental downstream cellular signaling events ultimately causing an increase in feeding, resulting in an overweight phenotype and/or obesity.
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Affiliation(s)
- Andy Tran
- Department of Physiology, University of Toronto, Ontario, Canada
| | - Wenyuan He
- Department of Physiology, University of Toronto, Ontario, Canada
| | - Jim T C Chen
- Department of Physiology, University of Toronto, Ontario, Canada
| | - Leigh Wellhauser
- Department of Physiology, University of Toronto, Ontario, Canada
| | | | | | - Denise D Belsham
- Department of Physiology, University of Toronto, Ontario, Canada.,Medicine, University of Toronto, Ontario, Canada.,Obstetrics and Gynaecology, University of Toronto, Ontario, Canada
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10
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Singh A, Sen P. Lipid droplet: A functionally active organelle in monocyte to macrophage differentiation and its inflammatory properties. Biochim Biophys Acta Mol Cell Biol Lipids 2021; 1866:158981. [PMID: 34119681 DOI: 10.1016/j.bbalip.2021.158981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 05/06/2021] [Accepted: 05/20/2021] [Indexed: 12/28/2022]
Abstract
Lipid droplets (LDs) perform several important functions like inflammatory responses, membrane trafficking, acts as secondary messengers, etc. rather than simply working as an energy reservoir. LDs have been implicated as a controlling factor in the progression of atherosclerosis followed by foam cell formation that derives from macrophages during the differentiation process. However, the role of LDs in monocyte differentiation or its further immunological function is still an area that mandates in-depth investigation. We report that LD dynamics is important for differentiation of monocytes and is absolutely required for sustained and prolonged functional activity of differentiated macrophages. In THP-1 cell line model system, we elucidated that increase in total LD content in monocyte by external lipid supplements, can induce monocyte differentiation independent of classical stimuli, PMA. Differential expression of PLIN2 and ATGL during the event, together with abrogation of de novo lipogenesis further confirmed the fact. Besides, an increase in LD content by free fatty acid supplement was able to exert a synergistic effect with PMA on differentiation and phagocytic activity compared to when they are used alone. Additionally, we have shown Rab5a to play a vital role in LDs biosynthesis/maturation in monocytes and thereby directly affecting differentiation of monocytes into macrophages via AKT pathway. Thus our study reveals the multi-faceted function of LDs during the process of monocyte to macrophage differentiation and thereby helping to maintain the functional activity.
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Affiliation(s)
- Arpana Singh
- School of Biological Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Prosenjit Sen
- School of Biological Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India.
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11
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Castillo AF, Orlando UD, Maloberti PM, Prada JG, Dattilo MA, Solano AR, Bigi MM, Ríos Medrano MA, Torres MT, Indo S, Caroca G, Contreras HR, Marelli BE, Salinas FJ, Salvetti NR, Ortega HH, Lorenzano Menna P, Szajnman S, Gomez DE, Rodríguez JB, Podesta EJ. New inhibitor targeting Acyl-CoA synthetase 4 reduces breast and prostate tumor growth, therapeutic resistance and steroidogenesis. Cell Mol Life Sci 2021; 78:2893-2910. [PMID: 33068124 PMCID: PMC11072814 DOI: 10.1007/s00018-020-03679-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 09/15/2020] [Accepted: 10/06/2020] [Indexed: 02/07/2023]
Abstract
Acyl-CoA synthetase 4 (ACSL4) is an isoenzyme of the fatty acid ligase-coenzyme-A family taking part in arachidonic acid metabolism and steroidogenesis. ACSL4 is involved in the development of tumor aggressiveness in breast and prostate tumors through the regulation of various signal transduction pathways. Here, a bioinformatics analysis shows that the ACSL4 gene expression and proteomic signatures obtained using a cell model was also observed in tumor samples from breast and cancer patients. A well-validated ACSL4 inhibitor, however, has not been reported hindering the full exploration of this promising target and its therapeutic application on cancer and steroidogenesis inhibition. In this study, ACSL4 inhibitor PRGL493 was identified using a homology model for ACSL4 and docking based virtual screening. PRGL493 was then chemically characterized through nuclear magnetic resonance and mass spectroscopy. The inhibitory activity was demonstrated through the inhibition of arachidonic acid transformation into arachidonoyl-CoA using the recombinant enzyme and cellular models. The compound blocked cell proliferation and tumor growth in both breast and prostate cellular and animal models and sensitized tumor cells to chemotherapeutic and hormonal treatment. Moreover, PGRL493 inhibited de novo steroid synthesis in testis and adrenal cells, in a mouse model and in prostate tumor cells. This work provides proof of concept for the potential application of PGRL493 in clinical practice. Also, these findings may prove key to therapies aiming at the control of tumor growth and drug resistance in tumors which express ACSL4 and depend on steroid synthesis.
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Affiliation(s)
- Ana F Castillo
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ulises D Orlando
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Paula M Maloberti
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jesica G Prada
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Melina A Dattilo
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Angela R Solano
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - María M Bigi
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mayra A Ríos Medrano
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - María T Torres
- Departamento de Oncología Básico Clínico, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Sebastián Indo
- Departamento de Oncología Básico Clínico, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Graciela Caroca
- Departamento de Oncología Básico Clínico, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Hector R Contreras
- Departamento de Oncología Básico Clínico, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Belkis E Marelli
- Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), CONICET, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina
| | - Facundo J Salinas
- Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), CONICET, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina
| | - Natalia R Salvetti
- Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), CONICET, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina
| | - Hugo H Ortega
- Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), CONICET, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina
| | - Pablo Lorenzano Menna
- Laboratorio de Oncología Molecular, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Provincia de Buenos Aires, Argentina
| | - Sergio Szajnman
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Unidad de Microanálisis y Métodos Físicos Aplicados a Química Orgánica (UMYMFOR), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Daniel E Gomez
- Laboratorio de Oncología Molecular, Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes, Bernal, Provincia de Buenos Aires, Argentina
| | - Juan B Rodríguez
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Unidad de Microanálisis y Métodos Físicos Aplicados a Química Orgánica (UMYMFOR), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ernesto J Podesta
- Instituto de Investigaciones Biomédicas (INBIOMED), CONICET, Universidad de Buenos Aires, Paraguay 2155 (C1121ABG), Buenos Aires, Argentina.
- Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina.
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12
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Liśkiewicz AD, Marczak Ł, Bogus K, Liśkiewicz D, Przybyła M, Lewin-Kowalik J. Proteomic and Structural Manifestations of Cardiomyopathy in Rat Models of Obesity and Weight Loss. Front Endocrinol (Lausanne) 2021; 12:568197. [PMID: 33716957 PMCID: PMC7945951 DOI: 10.3389/fendo.2021.568197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 01/05/2021] [Indexed: 12/12/2022] Open
Abstract
Obesity cardiomyopathy increases the risk of heart failure and death. Obesity is curable, leading to the restoration of the heart phenotype, but it is not clear if there are any after-effects of obesity present after weight loss. We characterize the proteomic landscape of obesity cardiomyopathy with an evaluation of whether the cardiac phenotype is still shaped after weight loss. Cardiomyopathy was validated by cardiac hypertrophy, fibrosis, oversized myocytes, and mTOR upregulation in a rat model of cafeteria diet-induced developmental obesity. By global proteomic techniques (LC-MS/MS) a plethora of molecular changes was observed in the heart and circulation of obese animals, suggesting abnormal utilization of metabolic substrates. This was confirmed by increased levels of cardiac ACSL-1, a key enzyme for fatty acid degradation and decreased GLUT-1, a glucose transporter in obese rats. Calorie restriction and weight loss led to the normalization of the heart's size, but fibrosis was still excessive. The proteomic compositions of cardiac tissue and plasma were different after weight loss as compared to control. In addition to morphological consequences, obesity cardiomyopathy involves many proteomic changes. Weight loss provides for a partial repair of the heart's architecture, but the trace of fibrotic deposition and proteomic alterations may occur.
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Affiliation(s)
- Arkadiusz D. Liśkiewicz
- Department of Physiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
- Laboratory of Molecular Biology, Institute of Physiotherapy and Health Sciences, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
| | - Łukasz Marczak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Katarzyna Bogus
- Department of Histology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Daniela Liśkiewicz
- Laboratory of Molecular Biology, Institute of Physiotherapy and Health Sciences, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
- Department for Experimental Medicine, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Marta Przybyła
- Department for Experimental Medicine, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Joanna Lewin-Kowalik
- Department of Physiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland
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13
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Rajesh Y, Sarkar D. Association of Adipose Tissue and Adipokines with Development of Obesity-Induced Liver Cancer. Int J Mol Sci 2021; 22:ijms22042163. [PMID: 33671547 PMCID: PMC7926723 DOI: 10.3390/ijms22042163] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 12/20/2022] Open
Abstract
Obesity is rapidly dispersing all around the world and is closely associated with a high risk of metabolic diseases such as insulin resistance, dyslipidemia, and nonalcoholic fatty liver disease (NAFLD), leading to carcinogenesis, especially hepatocellular carcinoma (HCC). It results from an imbalance between food intake and energy expenditure, leading to an excessive accumulation of adipose tissue (AT). Adipocytes play a substantial role in the tumor microenvironment through the secretion of several adipokines, affecting cancer progression, metastasis, and chemoresistance via diverse signaling pathways. AT is considered an endocrine organ owing to its ability to secrete adipokines, such as leptin, adiponectin, resistin, and a plethora of inflammatory cytokines, which modulate insulin sensitivity and trigger chronic low-grade inflammation in different organs. Even though the precise mechanisms are still unfolding, it is now established that the dysregulated secretion of adipokines by AT contributes to the development of obesity-related metabolic disorders. This review focuses on several obesity-associated adipokines and their impact on obesity-related metabolic diseases, subsequent metabolic complications, and progression to HCC, as well as their role as potential therapeutic targets. The field is rapidly developing, and further research is still required to fully understand the underlying mechanisms for the metabolic actions of adipokines and their role in obesity-associated HCC.
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Affiliation(s)
- Yetirajam Rajesh
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, VA 23298, USA;
| | - Devanand Sarkar
- Massey Cancer Center, Department of Human and Molecular Genetics, VCU Institute of Molecular Medicine (VIMM), Virginia Commonwealth University, Richmond, VA 23298, USA
- Correspondence: ; Tel.: +1-804-827-2339
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14
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Polyzos SA, Kountouras J, Mantzoros CS. Obeticholic acid for the treatment of nonalcoholic steatohepatitis: Expectations and concerns. Metabolism 2020; 104:154144. [PMID: 31930974 DOI: 10.1016/j.metabol.2020.154144] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Stergios A Polyzos
- First Laboratory of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece
| | - Jannis Kountouras
- Second Medical Clinic, School of Medicine, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki, Macedonia, Greece
| | - Christos S Mantzoros
- Department of Internal Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Section of Endocrinology, Boston VA Healthcare System, Harvard Medical School, Boston, MA, USA.
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15
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Zha Z, Han Q, Huo S. The protective effects of bexarotene against advanced glycation end-product (AGE)-induced degradation of articular extracellular matrix (ECM). ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 48:1-7. [PMID: 31852246 DOI: 10.1080/21691401.2019.1699802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Zhuqing Zha
- Luoyang Orthopedic Hospital of Henan Province, Orthopedic Hospital of Henan Province, Zhengzhou, Henan, China
| | - Qingmin Han
- Department of Orthopedics, The Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shaochuan Huo
- Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen, China
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16
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Bai L, Dong J, Liu Z, Rao Y, Feng P, Lan K. Viperin catalyzes methionine oxidation to promote protein expression and function of helicases. SCIENCE ADVANCES 2019; 5:eaax1031. [PMID: 31489375 PMCID: PMC6713503 DOI: 10.1126/sciadv.aax1031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 07/25/2019] [Indexed: 05/29/2023]
Abstract
Helicases play pivotal roles in fundamental biological processes, and posttranslational modifications regulate the localization, function, and stability of helicases. Here, we report that methionine oxidation of representative helicases, including DNA and RNA helicases of viral (ORF44 of KSHV) and cellular (MCM7 and RIG-I) origin, promotes their expression and functions. Cellular viperin, a major antiviral interferon-stimulated gene whose functions beyond host defense remain largely unknown, catalyzes the methionine oxidation of these helicases. Moreover, biochemical studies entailing loss-of-function mutations of helicases and a pharmacological inhibitor interfering with lipid metabolism and, hence, decreasing viperin activity indicate that methionine oxidation potently increases the stability and enzyme activity of these helicases that are critical for DNA replication and immune activation. Our work uncovers a pivotal role of viperin in catalyzing the methionine oxidation of helicases that are implicated in diverse fundamental biological processes.
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Affiliation(s)
- Lei Bai
- State Key Laboratory of Virology, College of Life Sciences, Medical Research Institute, Wuhan University, Wuhan 430072, P.R. China
| | - Jiazhen Dong
- Institut Pasteur of Shanghai, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Zhenqiu Liu
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, P.R. China
| | - Youliang Rao
- Section of Infection and Immunity, Herman Ostrow School of Dentistry and Norris Comprehensive Cancer Center, University of Southern California, 925 W 34th Street, Los Angeles, CA 90089, USA
| | - Pinghui Feng
- Section of Infection and Immunity, Herman Ostrow School of Dentistry and Norris Comprehensive Cancer Center, University of Southern California, 925 W 34th Street, Los Angeles, CA 90089, USA
| | - Ke Lan
- State Key Laboratory of Virology, College of Life Sciences, Medical Research Institute, Wuhan University, Wuhan 430072, P.R. China
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17
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Kanda T, Matsuoka S, Yamazaki M, Shibata T, Nirei K, Takahashi H, Kaneko T, Fujisawa M, Higuchi T, Nakamura H, Matsumoto N, Yamagami H, Ogawa M, Imazu H, Kuroda K, Moriyama M. Apoptosis and non-alcoholic fatty liver diseases. World J Gastroenterol 2018; 24:2661-2672. [PMID: 29991872 PMCID: PMC6034146 DOI: 10.3748/wjg.v24.i25.2661] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 06/04/2018] [Accepted: 06/21/2018] [Indexed: 02/06/2023] Open
Abstract
The number of patients with nonalcoholic fatty liver diseases (NAFLD) including nonalcoholic steatohepatitis (NASH), has been increasing. NASH causes cirrhosis and hepatocellular carcinoma (HCC) and is one of the most serious health problems in the world. The mechanism through which NASH progresses is still largely unknown. Activation of caspases, Bcl-2 family proteins, and c-Jun N-terminal kinase-induced hepatocyte apoptosis plays a role in the activation of NAFLD/NASH. Apoptotic hepatocytes stimulate immune cells and hepatic stellate cells toward the progression of fibrosis in the liver through the production of inflammasomes and cytokines. Abnormalities in glucose and lipid metabolism as well as microbiota accelerate these processes. The production of reactive oxygen species, oxidative stress, and endoplasmic reticulum stress is also involved. Cell death, including apoptosis, seems very important in the progression of NAFLD and NASH. Recently, inhibitors of apoptosis have been developed as drugs for the treatment of NASH and may prevent cirrhosis and HCC. Increased hepatocyte apoptosis may distinguish NASH from NAFLD, and the improvement of apoptosis could play a role in controlling the development of NASH. In this review, the association between apoptosis and NAFLD/NASH are discussed. This review could provide their knowledge, which plays a role in seeing the patients with NAFLD/NASH in daily clinical practice.
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Affiliation(s)
- Tatsuo Kanda
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Shunichi Matsuoka
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Motomi Yamazaki
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Toshikatsu Shibata
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Kazushige Nirei
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hiroshi Takahashi
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Tomohiro Kaneko
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Mariko Fujisawa
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Teruhisa Higuchi
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hitomi Nakamura
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Naoki Matsumoto
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hiroaki Yamagami
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Masahiro Ogawa
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hiroo Imazu
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Kazumichi Kuroda
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Mitsuhiko Moriyama
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
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