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Yang W, Wang Y, Li H, Liao F, Peng Y, Lu A, Tan L, Qu H, Long L, Fu C. Enhanced TfR1 Recognition of Myocardial Injury after Acute Myocardial Infarction with Cardiac Fibrosis via Pre-Degrading Excess Fibrotic Collagen. Biology (Basel) 2024; 13:213. [PMID: 38666825 PMCID: PMC11048469 DOI: 10.3390/biology13040213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 04/28/2024]
Abstract
The fibrosis process after myocardial infarction (MI) results in a decline in cardiac function due to fibrotic collagen deposition and contrast agents' metabolic disorders, posing a significant challenge to conventional imaging strategies in making heart damage clear in the fibrosis microenvironment. To address this issue, we developed an imaging strategy. Specifically, we pretreated myocardial fibrotic collagen with collagenase I combined with human serum albumin (HSA-C) and subsequently visualized the site of cardiac injury by near-infrared (NIR) fluorescence imaging using an optical contrast agent (CI, CRT-indocyanine green) targeting transferrin receptor 1 peptides (CRT). The key point of this strategy is that pretreatment with HSA-C can reduce background signal interference in the fibrotic tissue while enhancing CI uptake at the heart lesion site, making the boundary between the injured heart tissue and the normal myocardium clearer. Our results showed that compared to that in the untargeted group, the normalized fluorescence intensity of cardiac damage detected by NIR in the targeted group increased 1.28-fold. The normalized fluorescence intensity increased 1.21-fold in the pretreatment group of the targeted groups. These data demonstrate the feasibility of applying pretreated fibrotic collagen and NIR contrast agents targeting TfR1 to identify ferroptosis at sites of cardiac injury, and its clinical value in the management of patients with MI needs further study.
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Affiliation(s)
- Wenwen Yang
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, The State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - Yueqi Wang
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, The State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - Hongzheng Li
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Feifei Liao
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Yuxuan Peng
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Aimei Lu
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Ling Tan
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Hua Qu
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Linzi Long
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Changgeng Fu
- Graduate School, China Academy of Chinese Medical Sciences, Beijing 100091, China
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2
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Mattera V, Occhiuzzi F, Correale J, Pasquini JM. Remyelinating effect driven by transferrin-loaded extracellular vesicles. Glia 2024; 72:338-361. [PMID: 37860913 DOI: 10.1002/glia.24478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 09/21/2023] [Accepted: 09/29/2023] [Indexed: 10/21/2023]
Abstract
Extracellular vesicles (EVs) are involved in diverse cellular functions, playing a significant role in cell-to-cell communication in both physiological conditions and pathological scenarios. Therefore, EVs represent a promising therapeutic strategy. Oligodendrocytes (OLs) are myelinating glial cells developed from oligodendrocyte progenitor cells (OPCs) and damaged in chronic demyelinating diseases such as multiple sclerosis (MS). Glycoprotein transferrin (Tf) plays a critical role in iron homeostasis and has pro-differentiating effects on OLs in vivo and in vitro. In the current work, we evaluated the use of EVs as transporters of Tf to the central nervous system (CNS) through the intranasal (IN) route. For the in vitro mechanistic studies, we used rat plasma EVs. Our results show that EVTf enter OPCs through clathrin-caveolae and cholesterol-rich lipid raft endocytic pathways, releasing the cargo and exerting a pro-maturation effect on OPCs. These effects were also observed in vivo using the animal model of demyelination induced by cuprizone (CPZ). In this model, IN administered Tf-loaded EVs isolated from mouse plasma reached the brain parenchyma, internalizing into OPCs, promoting their differentiation, and accelerating remyelination. Furthermore, in vivo experiments demonstrated that EVs protected the Tf cargo and significantly reduced the amount of Tf required to induce remyelination as compared to soluble Tf. Collectively, these findings unveil EVs as functional nanocarriers of Tf to induce remyelination.
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Affiliation(s)
- Vanesa Mattera
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológica (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Federico Occhiuzzi
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológica (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Jorge Correale
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológica (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
- Departamento de Neurología, Fleni, Buenos Aires, Argentina
| | - Juana M Pasquini
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológica (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
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3
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Shen QQ, Jv XH, Ma XZ, Li C, Liu L, Jia WT, Qu L, Chen LL, Xie JX. Cell senescence induced by toxic interaction between α-synuclein and iron precedes nigral dopaminergic neuron loss in a mouse model of Parkinson's disease. Acta Pharmacol Sin 2024; 45:268-281. [PMID: 37674042 PMCID: PMC10789811 DOI: 10.1038/s41401-023-01153-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 08/10/2023] [Indexed: 09/08/2023] Open
Abstract
Cell senescence has been implicated in the pathology of Parkinson's disease (PD). Both abnormal α-synuclein aggregation and iron deposition are suggested to be the triggers, facilitators, and aggravators during the development of PD. In this study, we investigated the involvement of α-synuclein and iron in the process of cell senescence in a mouse model of PD. In order to overexpress α-syn-A53T in the substantia nigra pars compacta (SNpc), human α-syn-A53T was microinjected into both sides of the SNpc in mice. We found that overexpression of α-syn-A53T for one week induced significant pro-inflammatory senescence-associated secretory phenotype (SASP), increased cell senescence-related proteins (β-gal, p16, p21, H2A.X and γ-H2A.X), mitochondrial dysfunction accompanied by dysregulation of iron-related proteins (L-ferritin, H-ferritin, DMT1, IRP1 and IRP2) in the SNpc. In contrast, significant loss of nigral dopaminergic neurons and motor dysfunction were only observed after overexpression of α-syn-A53T for 4 weeks. In PC12 cells stably overexpressing α-syn-A53T, iron overload (ferric ammonium citrate, FAC, 100 μM) not only increased the level of reactive oxygen species (ROS), p16 and p21, but also exacerbated the processes of oxidative stress and cell senescence signalling induced by α-syn-A53T overexpression. Interestingly, reducing the iron level with deferoxamine (DFO) or knockdown of transferrin receptor 1 (TfR1) significantly improved both the phenotypes and dysregulated proteins of cell senescence induced by α-syn-A53T overexpression. All these evidence highlights the toxic interaction between iron and α-synuclein inducing cell senescence, which precedes nigral dopaminergic neuronal loss in PD. Further investigation on cell senescence may yield new therapeutic agents for the prevention or treatment of PD.
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Affiliation(s)
- Qing-Qing Shen
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China
| | - Xian-Hui Jv
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China
| | - Xi-Zhen Ma
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China
| | - Chong Li
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China
| | - Lin Liu
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China
| | - Wen-Ting Jia
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China
| | - Le Qu
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China
| | - Lei-Lei Chen
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China.
| | - Jun-Xia Xie
- Institute of Brain Science and Disease, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, Qingdao University, Qingdao, 266021, China.
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Nůsková H, Cortizo FG, Schwenker LS, Sachsenheimer T, Diakonov EE, Tiebe M, Schneider M, Lohbeck J, Reid C, Kopp-Schneider A, Helm D, Brügger B, Miller AK, Teleman AA. Competition for cysteine acylation by C16:0 and C18:0 derived lipids is a global phenomenon in the proteome. J Biol Chem 2023; 299:105088. [PMID: 37495107 PMCID: PMC10470219 DOI: 10.1016/j.jbc.2023.105088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/28/2023] Open
Abstract
S-acylation is a reversible posttranslational protein modification consisting of attachment of a fatty acid to a cysteine via a thioester bond. Research over the last few years has shown that a variety of different fatty acids, such as palmitic acid (C16:0), stearate (C18:0), or oleate (C18:1), are used in cells to S-acylate proteins. We recently showed that GNAI proteins can be acylated on a single residue, Cys3, with either C16:0 or C18:1, and that the relative proportion of acylation with these fatty acids depends on the level of the respective fatty acid in the cell's environment. This has functional consequences for GNAI proteins, with the identity of the acylating fatty acid affecting the subcellular localization of GNAIs. Unclear is whether this competitive acylation is specific to GNAI proteins or a more general phenomenon in the proteome. We perform here a proteome screen to identify proteins acylated with different fatty acids. We identify 218 proteins acylated with C16:0 and 308 proteins acylated with C18-lipids, thereby uncovering novel targets of acylation. We find that most proteins that can be acylated by C16:0 can also be acylated with C18-fatty acids. For proteins with more than one acylation site, we find that this competitive acylation occurs on each individual cysteine residue. This raises the possibility that the function of many different proteins can be regulated by the lipid environment via differential S-acylation.
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Affiliation(s)
- Hana Nůsková
- Division of Signal Transduction in Cancer and Metabolism, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Fabiola Garcia Cortizo
- Division of Signal Transduction in Cancer and Metabolism, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Lena Sophie Schwenker
- Division of Signal Transduction in Cancer and Metabolism, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Egor E Diakonov
- Division of Signal Transduction in Cancer and Metabolism, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Marcel Tiebe
- Division of Signal Transduction in Cancer and Metabolism, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Martin Schneider
- Mass Spectrometry Based Protein Analysis Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jasmin Lohbeck
- Research Group Cancer Drug Development, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Carissa Reid
- Division of Biostatistics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Dominic Helm
- Mass Spectrometry Based Protein Analysis Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Britta Brügger
- Heidelberg University Biochemistry Center (BZH), Heidelberg, Germany
| | - Aubry K Miller
- Research Group Cancer Drug Development, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Aurelio A Teleman
- Division of Signal Transduction in Cancer and Metabolism, German Cancer Research Center (DKFZ), Heidelberg, Germany.
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5
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Xiong W, Jin L, Zhao Y, Wu Y, Dong J, Guo Z, Zhu M, Dai Y, Pan Y, Zhu X. Deletion of Transferrin Receptor 1 in Parvalbumin Interneurons Induces a Hereditary Spastic Paraplegia-Like Phenotype. J Neurosci 2023; 43:5092-5113. [PMID: 37308296 PMCID: PMC10325000 DOI: 10.1523/jneurosci.2277-22.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 06/01/2023] [Accepted: 06/05/2023] [Indexed: 06/14/2023] Open
Abstract
Hereditary spastic paraplegia (HSP) is a severe neurodegenerative movement disorder, the underlying pathophysiology of which remains poorly understood. Mounting evidence has suggested that iron homeostasis dysregulation can lead to motor function impairment. However, whether deficits in iron homeostasis are involved in the pathophysiology of HSP remains unknown. To address this knowledge gap, we focused on parvalbumin-positive (PV+) interneurons, a large category of inhibitory neurons in the central nervous system, which play a critical role in motor regulation. The PV+ interneuron-specific deletion of the gene encoding transferrin receptor 1 (TFR1), a key component of the neuronal iron uptake machinery, induced severe progressive motor deficits in both male and female mice. In addition, we observed skeletal muscle atrophy, axon degeneration in the spinal cord dorsal column, and alterations in the expression of HSP-related proteins in male mice with Tfr1 deletion in the PV+ interneurons. These phenotypes were highly consistent with the core clinical features of HSP cases. Furthermore, the effects on motor function induced by Tfr1 ablation in PV+ interneurons were mostly concentrated in the dorsal spinal cord; however, iron repletion partly rescued the motor defects and axon loss seen in both sexes of conditional Tfr1 mutant mice. Our study describes a new mouse model for mechanistic and therapeutic studies relating to HSP and provides novel insights into iron metabolism in spinal cord PV+ interneurons and its role in the regulation of motor functions.SIGNIFICANCE STATEMENT Iron is crucial for neuronal functioning. Mounting evidence suggests that iron homeostasis dysregulation can induce motor function deficits. Transferrin receptor 1 (TFR1) is thought to be the key component in neuronal iron uptake. We found that deletion of Tfr1 in parvalbumin-positive (PV+) interneurons in mice induced severe progressive motor deficits, skeletal muscle atrophy, axon degeneration in the spinal cord dorsal column, and alterations in the expression of hereditary spastic paraplegia (HSP)-related proteins. These phenotypes were highly consistent with the core clinical features of HSP cases and partly rescued by iron repletion. This study describes a new mouse model for the study of HSP and provides novel insights into iron metabolism in spinal cord PV+ interneurons.
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Affiliation(s)
- Wenchao Xiong
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Liqiang Jin
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yulu Zhao
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yu Wu
- School of Psychology, Shenzhen University, Shenzhen 518060, China
| | - Jinghua Dong
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhixin Guo
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Minzhen Zhu
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yongfeng Dai
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yida Pan
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Xinhong Zhu
- School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
- School of Psychology, Shenzhen University, Shenzhen 518060, China
- Research Center for Brain Health, Pazhou Lab, Guangzhou 510330, China
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Hu M, Huang J, Chen L, Sun XR, Yao ZM, Tong XH, Jin WJ, Zhang YX, Dong SY. Upregulation of CDGSH iron sulfur domain 2 attenuates cerebral ischemia/reperfusion injury. Neural Regen Res 2023; 18:1512-1520. [PMID: 36571356 PMCID: PMC10075131 DOI: 10.4103/1673-5374.355766] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
CDGSH iron sulfur domain 2 can inhibit ferroptosis, which has been associated with cerebral ischemia/reperfusion, in individuals with head and neck cancer. Therefore, CDGSH iron sulfur domain 2 may be implicated in cerebral ischemia/reperfusion injury. To validate this hypothesis in the present study, we established mouse models of occlusion of the middle cerebral artery and HT22 cell models of oxygen-glucose deprivation and reoxygenation to mimic cerebral ischemia/reperfusion injury in vivo and in vitro, respectively. We found remarkably decreased CDGSH iron sulfur domain 2 expression in the mouse brain tissue and HT22 cells. When we used adeno-associated virus and plasmid to up-regulate CDGSH iron sulfur domain 2 expression in the brain tissue and HT22 cell models separately, mouse neurological dysfunction was greatly improved; the cerebral infarct volume was reduced; the survival rate of HT22 cells was increased; HT22 cell injury was alleviated; the expression of ferroptosis-related glutathione peroxidase 4, cystine-glutamate antiporter, and glutathione was increased; the levels of malondialdehyde, iron ions, and the expression of transferrin receptor 1 were decreased; and the expression of nuclear-factor E2-related factor 2/heme oxygenase 1 was increased. Inhibition of CDGSH iron sulfur domain 2 upregulation via the nuclear-factor E2-related factor 2 inhibitor ML385 in oxygen-glucose deprived and reoxygenated HT22 cells blocked the neuroprotective effects of CDGSH iron sulfur domain 2 up-regulation and the activation of the nuclear-factor E2-related factor 2/heme oxygenase 1 pathway. Our data indicate that the up-regulation of CDGSH iron sulfur domain 2 can attenuate cerebral ischemia/reperfusion injury, thus providing theoretical support from the perspectives of cytology and experimental zoology for the use of this protein as a therapeutic target in patients with cerebral ischemia/reperfusion injury.
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Affiliation(s)
- Miao Hu
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College, Bengbu, Anhui Province, China
| | - Jie Huang
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College, Bengbu, Anhui Province, China
| | - Lei Chen
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College, Bengbu, Anhui Province, China
| | - Xiao-Rong Sun
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College, Bengbu, Anhui Province, China
| | - Zi-Meng Yao
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College, Bengbu, Anhui Province, China
| | - Xu-Hui Tong
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College, Bengbu, Anhui Province, China
| | - Wen-Jing Jin
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College, Bengbu, Anhui Province, China
| | - Yu-Xin Zhang
- Department of Pharmacology, School of Pharmacy, Bengbu Medical College, Bengbu, Anhui Province, China
| | - Shu-Ying Dong
- Department of Pharmacology, School of Pharmacy; Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College; Anhui Engineering Technology Research Center of Biochemical Pharmaceutical, Bengbu, Anhui Province, China
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Mazel-Sanchez B, Niu C, Williams N, Bachmann M, Choltus H, Silva F, Serre-Beinier V, Karenovics W, Iwaszkiewicz J, Zoete V, Kaiser L, Hartley O, Wehrle-Haller B, Schmolke M. Influenza A virus exploits transferrin receptor recycling to enter host cells. Proc Natl Acad Sci U S A 2023; 120:e2214936120. [PMID: 37192162 PMCID: PMC10214170 DOI: 10.1073/pnas.2214936120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 04/07/2023] [Indexed: 05/18/2023] Open
Abstract
Influenza A virus (IAV) enters host cells mostly through clathrin-dependent receptor-mediated endocytosis. A single bona fide entry receptor protein supporting this entry mechanism remains elusive. Here we performed proximity ligation of biotin to host cell surface proteins in the vicinity of attached trimeric hemagglutinin-HRP and characterized biotinylated targets using mass spectrometry. This approach identified transferrin receptor 1 (TfR1) as a candidate entry protein. Genetic gain-of-function and loss-of-function experiments, as well as in vitro and in vivo chemical inhibition, confirmed the functional involvement of TfR1 in IAV entry. Recycling deficient mutants of TfR1 do not support entry, indicating that TfR1 recycling is essential for this function. The binding of virions to TfR1 via sialic acids confirmed its role as a directly acting entry factor, but unexpectedly even headless TfR1 promoted IAV particle uptake in trans. TIRF microscopy localized the entering virus-like particles in the vicinity of TfR1. Our data identify TfR1 recycling as a revolving door mechanism exploited by IAV to enter host cells.
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Affiliation(s)
- Beryl Mazel-Sanchez
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Chengyue Niu
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Nathalia Williams
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Michael Bachmann
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Hélèna Choltus
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Filo Silva
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | | | | | - Justyna Iwaszkiewicz
- Molecular Modeling Group, Swiss Institute of Bioinformatics, 1015Lausanne, Switzerland
| | - Vincent Zoete
- Molecular Modeling Group, Swiss Institute of Bioinformatics, 1015Lausanne, Switzerland
- Computer-Aided Molecular Engineering Group, Department of Oncology (University of Lausanne and the Lausanne University Hospital), Ludwig Institute for Cancer Research Lausanne, 1066Épalinges, Switzerland
| | - Laurent Kaiser
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
- Department of Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Geneva Centre for Emerging Viral Diseases, Geneva University Hospitals, 1205Geneva, Switzerland
- Division of Infectious Diseases, Geneva University Hospitals, 1205Geneva, Switzerland
| | - Oliver Hartley
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Bernhard Wehrle-Haller
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Mirco Schmolke
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
- Geneva Center of Inflammation Research, University of Geneva, 1211Geneva, Switzerland
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8
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Ogama Y, Kumagai Y, Komatsu N, Araki M, Masubuchi N, Akiyoshi H, Matsuura T, Kirisako H, Kyoya A, Nomura F, Ohira Y, Yokokawa T, Yamamoto Y. Phase 1 Clinical Trial of PPMX-T003, a Novel Human Monoclonal Antibody Specific for Transferrin Receptor 1, to Evaluate Its Safety, Pharmacokinetics, and Pharmacodynamics. Clin Pharmacol Drug Dev 2022. [PMID: 36583544 DOI: 10.1002/cpdd.1216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 12/05/2022] [Indexed: 12/31/2022]
Abstract
This study aimed to evaluate the safety, pharmacokinetics, and pharmacodynamics of PPMX-T003, a novel human monoclonal antibody for transferrin receptor 1 (TFR1), in healthy individuals. Forty participants were enrolled and randomized to PPMX-T003 dose groups (n = 6/group) and the placebo group (n = 10). The safety and pharmacokinetics profiles were assessed according to the sequential, ascending single-dose intravenous infusions of PPMX-T003 from 0.008 mg/kg to 0.25 mg/kg. Adverse events (AEs) after PPMX-T003 administration occurred in 16 of 30 participants. Any severe AE and AE incidence were not reported, but they tended to increase depending on the dose. Laboratory tests, vital signs, and standard 12-lead electrocardiogram showed no clinically relevant changes. Five participants experienced an infusion-related reaction but recovered on days 5-10. Regarding pharmacokinetics, PPMX-T003 has a nonlinear elimination pattern. PPMX-T003 in the 0.25 mg/kg group showed apparent (>50%) decreased serum levels of reticulocytes from day 3 and sustained moderate (<10%) fall of hematocrit and hemoglobin counts from day 7. In conclusion, the antibody-mediated blockade of TFR1 elicited the expected fall in blood cell levels and showed an acceptable safety profile, supporting the continuing development of PPMX-T003 as a new candidate for polycythemia vera treatment.
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Affiliation(s)
| | - Yuji Kumagai
- Kitasato University school of medicine, Sagamihara, Kanagawa, Japan
| | - Norio Komatsu
- Laboratory for the Development of Therapies against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Marito Araki
- Laboratory for the Development of Therapies against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Nami Masubuchi
- Laboratory for the Development of Therapies against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | | | | | | | | | | | | | | | - Yukiya Yamamoto
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai, Aichi, Japan
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9
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Wu Y, Ma Z, Mai X, Liu X, Li P, Qi X, Li G, Li J. Identification of a Novel Inhibitor of TfR1 from Designed and Synthesized Muriceidine A Derivatives. Antioxidants (Basel) 2022; 11:antiox11050834. [PMID: 35624697 PMCID: PMC9137542 DOI: 10.3390/antiox11050834] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/12/2022] [Accepted: 04/22/2022] [Indexed: 02/06/2023] Open
Abstract
The transferrin receptor 1 (TfR1) plays a key role in cellular iron uptake through its interaction with iron-bound Tf. TfR1 is often reported to be overexpressed in malignant cells, and this increase may be associated with poor prognosis in different types of cancer, which makes it an attractive target for antitumor therapy. The marine natural product Muriceidine A is a potent anticancer agent reported in our previous work. In this study, we designed and synthesized a series of Muriceidine A derivatives and described the systematic investigation into their cytotoxic activities against four tumor cells. Most of the derivatives showed stronger antitumor activity and we found that the introduction of electron-donating groups at position C-2 of unsaturated piperidine was beneficial to anticancer activity and unsaturated piperidine was responsible for the antiproliferative activity. Among these compounds, 12b (methyl at position C-2 of unsaturated piperidine) exhibited the strongest cytotoxicity against MDA-MB-231 cells. Further pharmacological research showed that 12b bound to Transferrin receptor 1 (TfR1) directly caused iron deprivation and ROS imbalance along with the degradations of several oncoproteins, especially FGFR1, through the proteasome pathway; thus, inducing cell cycle arrest and apoptosis in MDA-MB-231 breast cancer cells. Our findings indicate that 12b is a promising lead compound targeting TfR1 for triple negative breast cancer.
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Affiliation(s)
- Yu Wu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Y.W.); (Z.M.); (X.M.); (X.L.); (P.L.); (X.Q.)
| | - Zongchen Ma
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Y.W.); (Z.M.); (X.M.); (X.L.); (P.L.); (X.Q.)
| | - Xiaoyuan Mai
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Y.W.); (Z.M.); (X.M.); (X.L.); (P.L.); (X.Q.)
| | - Xiaoling Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Y.W.); (Z.M.); (X.M.); (X.L.); (P.L.); (X.Q.)
| | - Pinglin Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Y.W.); (Z.M.); (X.M.); (X.L.); (P.L.); (X.Q.)
| | - Xin Qi
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Y.W.); (Z.M.); (X.M.); (X.L.); (P.L.); (X.Q.)
| | - Guoqiang Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Y.W.); (Z.M.); (X.M.); (X.L.); (P.L.); (X.Q.)
- Laboratory for Marine Drugs and Bioproducts, Open Studio for Druggability Research of Marine Natural Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Correspondence: (G.L.); (J.L.)
| | - Jing Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; (Y.W.); (Z.M.); (X.M.); (X.L.); (P.L.); (X.Q.)
- Laboratory for Marine Drugs and Bioproducts, Open Studio for Druggability Research of Marine Natural Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Correspondence: (G.L.); (J.L.)
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10
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Yook JS, Thomas SS, Toney AM, You M, Kim YC, Liu Z, Lee J, Chung S. Dietary Iron Deficiency Modulates Adipocyte Iron Homeostasis, Adaptive Thermogenesis, and Obesity in C57BL/6 Mice. J Nutr 2021; 151:2967-2975. [PMID: 34383942 PMCID: PMC8485911 DOI: 10.1093/jn/nxab222] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/29/2021] [Accepted: 06/15/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Adaptive thermogenesis is an iron-demanding pathway, significantly contributing to whole-body energy expenditure. However, the effects of iron-deficient diets on adaptive thermogenesis and obesity remain unknown. OBJECTIVES We aimed to determine the impact of dietary iron deficiency on iron homeostasis in adipocytes, adaptive thermogenic capacity, and metabolic consequences in obesity. METHODS C57BL/6 male mice were assigned to either the iron-adequate (IA, 35 ppm) or the iron-deficient group (ID, 3 ppm) at weaning. Upon 8 wk of age, both IA and ID groups received an isocaloric high-fat diet (45% kcal from fat) for 10 wk, maintaining the same iron content. Mice (n = 8) were used to determine the iron status at the systemic and tissue levels and lipid metabolism and inflammatory signaling in adipose tissue. The same mice were used to evaluate cold tolerance (4°C) for 3 h. For assessing adaptive thermogenesis, mice (n = 5) received an intraperitoneal injection of β3-adrenoceptor agonist CL316243 (CL) for 5 d. RESULTS Compared with the IA group, the ID group had nonanemic iron deficiency, lower serum ferritin (42.8%, P < 0.01), and greater weight gain (8.67%, P < 0.05) and insulin resistance (159%, P < 0.01), partly due to reduced AMP-activated protein kinase activation (61.0%, P < 0.05). Upon cold exposure, the ID group maintained a core body temperature 2°C lower than the IA group. The ID group had lower iron content (47.0%, P < 0.01) in the inguinal adipose tissue (iWAT) than the IA group, which was associated with impaired adaptive thermogenesis. In response to CL, ID mice showed decreased heat production (P < 0.01) and defective upregulation of beige adipocyte-specific markers, including uncoupling protein 1 (41.1%, P < 0.001), transferrin receptor 1 (47.5%, P < 0.001), and mitochondrial respiratory chain complexes (P < 0.05) compared with IA mice. CONCLUSIONS Dietary iron deficiency deregulates iron balance in the iWAT and impairs adaptive thermogenesis, thereby escalating the diet-induced weight gain in C57BL/6 mice.
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Affiliation(s)
- Jin-Seon Yook
- Department of Nutrition, University of Massachusetts, Amherst, MA, USA
| | | | - Ashley Mulcahy Toney
- Department of Nutrition and Health Sciences, University of Nebraska–Lincoln, Lincoln, NE, USA
| | - Mikyoung You
- Department of Nutrition, University of Massachusetts, Amherst, MA, USA
| | - Young-Cheul Kim
- Department of Nutrition, University of Massachusetts, Amherst, MA, USA
| | - Zhenhua Liu
- Department of Nutrition, University of Massachusetts, Amherst, MA, USA
| | - Jaekwon Lee
- Department of Biochemistry, University of Nebraska–Lincoln, Lincoln, NE, USA
| | - Soonkyu Chung
- Department of Nutrition, University of Massachusetts, Amherst, MA, USA
- Department of Nutrition and Health Sciences, University of Nebraska–Lincoln, Lincoln, NE, USA
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11
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Martínez LE, Daniels-Wells TR, Guo Y, Magpantay LI, Candelaria PV, Penichet ML, Martínez-Maza O, Epeldegui M. Targeting TfR1 with the ch128.1/IgG1 Antibody Inhibits EBV-driven Lymphomagenesis in Immunosuppressed Mice Bearing EBV + Human Primary B-cells. Mol Cancer Ther 2021; 20:1592-1602. [PMID: 34158342 PMCID: PMC8419068 DOI: 10.1158/1535-7163.mct-21-0074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/05/2021] [Accepted: 06/01/2021] [Indexed: 11/16/2022]
Abstract
Epstein-Barr virus (EBV) is a human gammaherpesvirus associated with the development of hematopoietic cancers of B-lymphocyte origin, including AIDS-related non-Hodgkin lymphoma (AIDS-NHL). Primary infection of B-cells with EBV results in their polyclonal activation and immortalization. The transferrin receptor 1 (TfR1), also known as CD71, is important for iron uptake and regulation of cellular proliferation. TfR1 is highly expressed in proliferating cells, including activated lymphocytes and malignant cells. We developed a mouse/human chimeric antibody targeting TfR1 (ch128.1/IgG1) that has previously shown significant antitumor activity in immunosuppressed mouse models bearing human malignant B-cells, including multiple myeloma and AIDS-NHL cells. In this article, we examined the effect of targeting TfR1 to inhibit EBV-driven activation and growth of human B-cells in vivo using an immunodeficient NOD.Cg-Prkdcscid Il2rgtm1Wjl /SzJ [NOD/SCID gamma (NSG)] mouse model. Mice were implanted with T-cell-depleted, human peripheral blood mononuclear cells (PBMCs), either without EBV (EBV-), or exposed to EBV in vitro (EBV+), intravenously via the tail vein. Mice implanted with EBV+ cells and treated with an IgG1 control antibody (400 μg/mouse) developed lymphoma-like growths of human B-cell origin that were EBV+, whereas mice implanted with EBV+ cells and treated with ch128.1/IgG1 (400 μg/mouse) showed increased survival and significantly reduced inflammation and B-cell activation. These results indicate that ch128.1/IgG1 is effective at preventing the growth of EBV+ human B-cell tumors in vivo, thus, indicating that there is significant potential for agents targeting TfR1 as therapeutic strategies to prevent the development of EBV-associated B-cell malignancies. SIGNIFICANCE: An anti-TfR1 antibody, ch128.1/IgG1, effectively inhibits the activation, growth, and immortalization of EBV+ human B-cells in vivo, as well as the development of these cells into lymphoma-like tumors in immunodeficient mice.
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Affiliation(s)
- Laura E Martínez
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
- AIDS Institute, University of California Los Angeles, Los Angeles, California
| | - Tracy R Daniels-Wells
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Yu Guo
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
- AIDS Institute, University of California Los Angeles, Los Angeles, California
| | - Larry I Magpantay
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
- AIDS Institute, University of California Los Angeles, Los Angeles, California
| | - Pierre V Candelaria
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Manuel L Penichet
- AIDS Institute, University of California Los Angeles, Los Angeles, California
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California
- Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine University of California Los Angeles, Los Angeles, California
- The Molecular Biology Institute, University of California Los Angeles, Los Angeles, California
| | - Otoniel Martínez-Maza
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
- AIDS Institute, University of California Los Angeles, Los Angeles, California
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California
- Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine University of California Los Angeles, Los Angeles, California
- Department of Epidemiology, UCLA Fielding School of Public Health, University of California Los Angeles, Los Angeles, California
| | - Marta Epeldegui
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.
- AIDS Institute, University of California Los Angeles, Los Angeles, California
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California
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12
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Zhang Z, Funcke JB, Zi Z, Zhao S, Straub LG, Zhu Y, Zhu Q, Crewe C, An YA, Chen S, Li N, Wang MY, Ghaben AL, Lee C, Gautron L, Engelking LJ, Raj P, Deng Y, Gordillo R, Kusminski CM, Scherer PE. Adipocyte iron levels impinge on a fat-gut crosstalk to regulate intestinal lipid absorption and mediate protection from obesity. Cell Metab 2021; 33:1624-1639.e9. [PMID: 34174197 PMCID: PMC8338877 DOI: 10.1016/j.cmet.2021.06.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 04/06/2021] [Accepted: 06/02/2021] [Indexed: 02/07/2023]
Abstract
Iron overload is positively associated with diabetes risk. However, the role of iron in adipose tissue remains incompletely understood. Here, we report that transferrin-receptor-1-mediated iron uptake is differentially required for distinct subtypes of adipocytes. Notably, adipocyte-specific transferrin receptor 1 deficiency substantially protects mice from high-fat-diet-induced metabolic disorders. Mechanistically, low cellular iron levels have a positive impact on the health of the white adipose tissue and can restrict lipid absorption from the intestine through modulation of vesicular transport in enterocytes following high-fat diet feeding. Specific reduction of adipocyte iron by AAV-mediated overexpression of the iron exporter Ferroportin1 in adult mice effectively mimics these protective effects. In summary, our studies highlight an important role of adipocyte iron in the maintenance of systemic metabolism through an adipocyte-enterocyte axis, offering an additional level of control over caloric influx into the system after feeding by regulating intestinal lipid absorption.
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Affiliation(s)
- Zhuzhen Zhang
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jan-Bernd Funcke
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Zhenzhen Zi
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shangang Zhao
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Leon G Straub
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yi Zhu
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Qingzhang Zhu
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Clair Crewe
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yu A An
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shiuhwei Chen
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Na Li
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - May-Yun Wang
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Alexandra L Ghaben
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Charlotte Lee
- Center for Hypothalamic Research, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Laurent Gautron
- Center for Hypothalamic Research, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Luke J Engelking
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Prithvi Raj
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yingfeng Deng
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ruth Gordillo
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Christine M Kusminski
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Philipp E Scherer
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA; Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
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13
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Ma Y, Li R, Dong Y, You C, Huang S, Li X, Wang F, Zhang Y. tLyP-1 Peptide Functionalized Human H Chain Ferritin for Targeted Delivery of Paclitaxel. Int J Nanomedicine 2021; 16:789-802. [PMID: 33568906 PMCID: PMC7869709 DOI: 10.2147/ijn.s289005] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 01/18/2021] [Indexed: 12/20/2022] Open
Abstract
PURPOSE The aims of this study were to test the feasibility, targeting specificity and anticancer therapeutic efficacy of CendR motif tLyP-1 functionalized at the N-terminal of ferritin for paclitaxel (PTX) delivery. METHODS A tumor homing and penetrating peptide tLyP-1 was fused to the N-terminal of human H chain ferritin (HFtn) to generate a dual-targeting nanoparticle delivery system. PTX molecules were encapsulated into the HFtn nanocage using the disassembly/assembly method by adjusting pHs. Cellular uptake was examined by confocal laser scanning microscopy (CLSM) and flow cytometry. The MTT assay was used to test the cytotoxicity of various PTX-loaded NPs against MDA-MB-231 and SMMC-7721 tumor cells. The wound healing and cell migration assays were conducted to assess the inhibitory effect on cell motility and metastasis. The inhibition effect on the SMMC-7721 tumor spheroids was studied and penetration ability was evaluated by CLSM. The antitumor efficacy of PTX-loaded NPs was assessed in MDA-MB-231 breast cancer xenografted in female BALB/c nude mice. RESULTS Compared with HFtn-PTX, in vitro studies demonstrated that the tLyP-1-HFtn-PTX displayed enhanced intracellular delivery and better cytotoxicity and anti-invasion ability against both SMMC-7721 and MDA-MB-231 cells. The better penetrability and growth inhibitory effect on SMMC-7721 tumor spheroids were also testified. In vivo distribution and imaging demonstrated that the tLyP-1-HFtn-PTX NPs were selectively accumulated and penetrated at the tumor regions. Verified by the breast cancer cells model in BABL/c nude mice, tLyP-1-HFtn-PTX displayed higher in vivo therapeutic efficacy with lower systemic toxicity. CONCLUSION Ferritin decorated with tumor-homing penetration peptide tLyP-1 at the N terminal could deliver PTX specifically inside the cell via receptor-mediated endocytosis with better efficacy. The peptide tLyP-1 which is supposed to work only at the C terminus showed enhanced tumor tissue penetration and antitumor efficacy, demonstrating that it also worked at the N-terminal of HFtn.
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Affiliation(s)
- Yuanmeng Ma
- College of Chemical Engineering, Jiangsu Key Laboratory for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
| | - Ruike Li
- College of Chemical Engineering, Jiangsu Key Laboratory for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
| | - Yixin Dong
- College of Chemical Engineering, Jiangsu Key Laboratory for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
| | - Chaoqun You
- College of Chemical Engineering, Jiangsu Key Laboratory for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 210089, People’s Republic of China
| | - Shenlin Huang
- College of Chemical Engineering, Jiangsu Key Laboratory for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
| | - Xun Li
- College of Chemical Engineering, Jiangsu Key Laboratory for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
| | - Fei Wang
- College of Chemical Engineering, Jiangsu Key Laboratory for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
| | - Yu Zhang
- College of Chemical Engineering, Jiangsu Key Laboratory for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
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Menghini S, Ho PS, Gwisai T, Schuerle S. Magnetospirillum magneticum as a Living Iron Chelator Induces TfR1 Upregulation and Decreases Cell Viability in Cancer Cells. Int J Mol Sci 2021; 22:ijms22020498. [PMID: 33419059 PMCID: PMC7825404 DOI: 10.3390/ijms22020498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/23/2020] [Accepted: 01/04/2021] [Indexed: 11/16/2022] Open
Abstract
Interest has grown in harnessing biological agents for cancer treatment as dynamic vectors with enhanced tumor targeting. While bacterial traits such as proliferation in tumors, modulation of an immune response, and local secretion of toxins have been well studied, less is known about bacteria as competitors for nutrients. Here, we investigated the use of a bacterial strain as a living iron chelator, competing for this nutrient vital to tumor growth and progression. We established an in vitro co-culture system consisting of the magnetotactic strain Magnetospirillum magneticum AMB-1 incubated under hypoxic conditions with human melanoma cells. Siderophore production by 108 AMB-1/mL in human transferrin (Tf)-supplemented media was quantified and found to be equivalent to a concentration of 3.78 µM ± 0.117 µM deferoxamine (DFO), a potent drug used in iron chelation therapy. Our experiments revealed an increased expression of transferrin receptor 1 (TfR1) and a significant decrease of cancer cell viability, indicating the bacteria’s ability to alter iron homeostasis in human melanoma cells. Our results show the potential of a bacterial strain acting as a self-replicating iron-chelating agent, which could serve as an additional mechanism reinforcing current bacterial cancer therapies.
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15
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Huang N, Zhan LL, Cheng Y, Wang XL, Wei YX, Wang Q, Li WJ. TfR1 Extensively Regulates the Expression of Genes Associated with Ion Transport and Immunity. Curr Med Sci 2020; 40:493-501. [PMID: 32681254 DOI: 10.1007/s11596-020-2208-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 02/07/2020] [Indexed: 02/08/2023]
Abstract
Transferrin receptor 1 (TfR1), encoded by the TFRC gene, is the gatekeeper of cellular iron uptake for cells. A variety of molecular mechanisms are at work to tightly regulate TfR1 expression, and abnormal TfR1 expression has been associated with various diseases. In the current study, to determine the regulation pattern of TfR1, we cloned and overexpressed the human TFRC gene in HeLa cells. RNA-sequencing (RNA-seq) was used to analyze the global transcript levels in overexpressed (OE) and normal control (NC) samples. A total of 1669 differentially expressed genes (DEGs) were identified between OE and NC. Gene ontology (GO) analysis was carried out to explore the functions of the DEGs. It was found that multiple DEGs were associated with ion transport and immunity. Moreover, the regulatory network was constructed on basis of DEGs associated with ion transport and immunity, highlighting that TFRC was the node gene of the network. These results together suggested that precisely controlled TfR1 expression might be not only essential for iron homeostasis, but also globally important for cell physiology, including ion transport and immunity.
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16
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Li J, Pan X, Pan G, Song Z, He Y, Zhang S, Ye X, Yang X, Xie E, Wang X, Mai X, Yin X, Tang B, Shu X, Chen P, Dai X, Tian Y, Yao L, Han M, Xu G, Zhang H, Sun J, Chen H, Wang F, Min J, Xie L. Transferrin Receptor 1 Regulates Thermogenic Capacity and Cell Fate in Brown/Beige Adipocytes. Adv Sci (Weinh) 2020; 7:1903366. [PMID: 32596110 PMCID: PMC7312276 DOI: 10.1002/advs.201903366] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 02/24/2020] [Indexed: 05/02/2023]
Abstract
Iron homeostasis is essential for maintaining cellular function in a wide range of cell types. However, whether iron affects the thermogenic properties of adipocytes is currently unknown. Using integrative analyses of multi-omics data, transferrin receptor 1 (Tfr1) is identified as a candidate for regulating thermogenesis in beige adipocytes. Furthermore, it is shown that mice lacking Tfr1 specifically in adipocytes have impaired thermogenesis, increased insulin resistance, and low-grade inflammation accompanied by iron deficiency and mitochondrial dysfunction. Mechanistically, the cold treatment in beige adipocytes selectively stabilizes hypoxia-inducible factor 1-alpha (HIF1α), upregulating the Tfr1 gene, and thermogenic adipocyte-specific Hif1α deletion reduces thermogenic gene expression in beige fat without altering core body temperature. Notably, Tfr1 deficiency in interscapular brown adipose tissue (iBAT) leads to the transdifferentiation of brown preadipocytes into white adipocytes and muscle cells; in contrast, long-term exposure to a low-iron diet fails to phenocopy the transdifferentiation effect found in Tfr1-deficient mice. Moreover, mice lacking transmembrane serine protease 6 (Tmprss6) develop iron deficiency in both inguinal white adipose tissue (iWAT) and iBAT, and have impaired cold-induced beige adipocyte formation and brown fat thermogenesis. Taken together, these findings indicate that Tfr1 plays an essential role in thermogenic adipocytes via both iron-dependent and iron-independent mechanisms.
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Affiliation(s)
- Jin Li
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthChina Agricultural UniversityBeijing100193China
- Department of NutritionPrecision Nutrition Innovation CenterSchool of Public HealthZhengzhou UniversityZhengzhou450001China
| | - Xiaohan Pan
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Guihua Pan
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Zijun Song
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Yao He
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Susu Zhang
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Xueru Ye
- Nanfang HospitalSouthern Medical UniversityGuangzhou510515China
| | - Xiang Yang
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Enjun Xie
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Xinhui Wang
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Xudong Mai
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Xiangju Yin
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Biyao Tang
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Xuan Shu
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Pengyu Chen
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Xiaoshuang Dai
- BGI Institute of Applied AgricultureBGI‐ShenzhenShenzhen518120China
| | - Ye Tian
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Liheng Yao
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Mulan Han
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Guohuan Xu
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Huijie Zhang
- Nanfang HospitalSouthern Medical UniversityGuangzhou510515China
| | - Jia Sun
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Hong Chen
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
| | - Fudi Wang
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthChina Agricultural UniversityBeijing100193China
- Department of NutritionPrecision Nutrition Innovation CenterSchool of Public HealthZhengzhou UniversityZhengzhou450001China
| | - Junxia Min
- The First Affiliated HospitalInstitute of Translational MedicineSchool of Public HealthZhejiang University School of MedicineHangzhou310058China
| | - Liwei Xie
- State Key Laboratory of Applied Microbiology Southern ChinaGuangdong Provincial Key Laboratory of Microbial Culture Collection and ApplicationGuangdong Open Laboratory of Applied MicrobiologyGuangdong Institute of MicrobiologyGuangdong Academy of SciencesZhujiang HospitalSouthern Medical UniversityGuangzhou510070China
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17
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Mattera VS, Pereyra Gerber P, Glisoni R, Ostrowski M, Verstraeten SV, Pasquini JM, Correale JD. Extracellular vesicles containing the transferrin receptor as nanocarriers of apotransferrin. J Neurochem 2020; 155:327-338. [PMID: 32248519 DOI: 10.1111/jnc.15019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/28/2020] [Accepted: 03/25/2020] [Indexed: 12/11/2022]
Abstract
Previous work by our group has shown the pro-differentiating effects of apotransferrin (aTf) on oligodendroglial cells in vivo and in vitro. Further studies showed the remyelinating effect of aTf in animal demyelination models such as hypoxia/ischemia, where the intranasal administration of human aTf provided brain neuroprotection and reduced white matter damage, neuronal loss, and astrogliosis in different brain regions. These data led us to search for a less invasive and controlled technique to deliver aTf to the CNS. To such end, we isolated extracellular vesicles (EVs) from human and mouse plasma and different neuron and glia conditioned media and characterized them based on their quality, quantity, identity, and structural integrity by western blot, dynamic light scattering, and scanning electron microscopy. All sources yielded highly pure vesicles whose size and structures were in keeping with previous literary evidence. Given that, remarkably, EVs from all sources analyzed contained Tf receptor 1 (TfR1) in their composition, we employed two passive cargo-loading strategies which rendered successful EV loading with aTf, specifically through binding to TfR1. These results unveil EVs as potential nanovehicles of aTf to be delivered into the CNS parenchyma, and pave the way for further studies into their possible clinical application in the treatment of demyelinating diseases.
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Affiliation(s)
- Vanesa S Mattera
- CONICET. Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Pehuén Pereyra Gerber
- Facultad de Farmacia y Bioquímica, Departamento de Química Biológica. Buenos Aires, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Romina Glisoni
- Facultad de Farmacia y Bioquímica, Departamento de Tecnología Farmacéutica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Nanobiotecnología (NANOBIOTEC), Universidad de Buenos Aires. CONICET, Buenos Aires, Argentina
| | - Matias Ostrowski
- Facultad de Farmacia y Bioquímica, Departamento de Química Biológica. Buenos Aires, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Sandra V Verstraeten
- CONICET. Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires. CONICET, Buenos Aires, Argentina
| | - Juana M Pasquini
- CONICET. Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires, Buenos Aires, Argentina.,Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires. CONICET, Buenos Aires, Argentina
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18
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Hickerson BT, Westover JB, Wang Z, Lee YM, Gowen BB. Guinea Pig Transferrin Receptor 1 Mediates Cellular Entry of Junín Virus and Other Pathogenic New World Arenaviruses. J Virol 2020; 94:e01278-19. [PMID: 31748396 DOI: 10.1128/JVI.01278-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 11/13/2019] [Indexed: 12/12/2022] Open
Abstract
Several clade B New World arenaviruses (NWAs) can cause severe and often fatal hemorrhagic fever, for which preventive and therapeutic measures are severely limited. These NWAs use human transferrin receptor 1 (hTfR1) as a host cell receptor for virus entry. The most prevalent of the pathogenic NWAs is Junín virus (JUNV), the etiological agent of Argentine hemorrhagic fever. Small animal models of JUNV infection are limited because most laboratory rodent species are refractory to disease. Only guinea pigs are known to develop disease following JUNV infection, but the underlying mechanisms are not well characterized. In the present study, we demonstrate marked susceptibility of Hartley guinea pigs to uniformly lethal disease when challenged with as few as 4 PFU of the Romero strain of JUNV. In vitro, we show that infection of primary guinea pig macrophages results in greater JUNV replication compared to infection of hamster or mouse macrophages. We provide evidence that the guinea pig TfR1 (gpTfR1) is the principal receptor for JUNV, while hamster and mouse orthologs fail to support viral entry/infection of pseudotyped murine leukemia viruses expressing pathogenic NWA glycoproteins or JUNV. Together, our results indicate that gpTfR1 serves as the primary receptor for pathogenic NWAs, enhancing viral infection in guinea pigs.IMPORTANCE JUNV is one of five known NWAs that cause viral hemorrhagic fever in humans. Countermeasures against JUNV infection are limited to immunization with the Candid#1 vaccine and immune plasma, which are available only in Argentina. The gold standard small animal model for JUNV infection is the guinea pig. Here, we demonstrate high sensitivity of this species to severe JUNV infection and identify gpTfR1 as the primary receptor. Use of hTfR1 for host cell entry is a feature shared by pathogenic NWAs. Our results show that expression of gpTfR1 or hTfR1 comparably enhances JUNV virus entry/infectivity. Our findings shed light on JUNV infection in guinea pigs as a model for human disease and suggest that similar pathophysiological mechanisms related to iron sequestration during infection and regulation of TfR1 expression may be shared between humans and guinea pigs. A better understanding of the underlying disease process will guide development of new therapeutic interventions.
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19
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Vela D. Keeping heart homeostasis in check through the balance of iron metabolism. Acta Physiol (Oxf) 2020; 228:e13324. [PMID: 31162883 DOI: 10.1111/apha.13324] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/31/2019] [Accepted: 05/31/2019] [Indexed: 02/06/2023]
Abstract
Highly active cardiomyocytes need iron for their metabolic activity. In physiological conditions, iron turnover is a delicate process which is dependent on global iron supply and local autonomous regulatory mechanisms. Though less is known about the autonomous regulatory mechanisms, data suggest that these mechanisms can preserve cellular iron turnover even in the presence of systemic iron disturbance. Therefore, activity of local iron protein machinery and its relationship with global iron metabolism is important to understand cardiac iron metabolism in physiological conditions and in cardiac disease. Our knowledge in this respect has helped in designing therapeutic strategies for different cardiac diseases. This review is a synthesis of our current knowledge concerning the regulation of cardiac iron metabolism. In addition, different models of cardiac iron dysmetabolism will be discussed through the examples of heart failure (cardiomyocyte iron deficiency), myocardial infarction (acute changes in cardiac iron turnover), doxorubicin-induced cardiotoxicity (cardiomyocyte iron overload in mitochondria), thalassaemia (cardiomyocyte cytosolic and mitochondrial iron overload) and Friedreich ataxia (asymmetric cytosolic/mitochondrial cardiac iron dysmetabolism). Finally, future perspectives will be discussed in order to resolve actual gaps in knowledge, which should be helpful in finding new treatment possibilities in different cardiac diseases.
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Affiliation(s)
- Driton Vela
- Faculty of Medicine, Department of Physiology University of Prishtina Prishtina Kosovo
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20
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Li R, Ma Y, Dong Y, Zhao Z, You C, Huang S, Li X, Wang F, Zhang Y. Novel Paclitaxel-Loaded Nanoparticles Based on Human H Chain Ferritin for Tumor-Targeted Delivery. ACS Biomater Sci Eng 2019; 5:6645-6654. [PMID: 33423483 DOI: 10.1021/acsbiomaterials.9b01533] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Paclitaxel (PTX), an excellent chemotherapeutic antitumor drug, is widely used to treat patients with various cancers. However, its clinical applications are greatly restricted by poor solubility and lack of targeting. Herein, we applied natural human H chain ferritin (HFtn) nanocages that can bind to tumor cells via interacting with the human transferritin receptor 1 (TfR1) leading to its endocytosis as the PTX carrier for the targeted delivery. PTX molecules were encapsulated into HFtn cavity using disassembly/reassembly method through adjusting pH. According to the requirements of drugs suitable for clinical trials, HFtn can be easily purified in high yields with no ligand modification or property modulation. We demonstrated that PTX molecules were successfully encapsulated in the protein nanocages. The HFtn-PTX nanoparticles exhibited similar morphology and structural characteristics to the hollow cage and showed significant cytotoxicity in vitro than the naked PTX. Flow cytometry, confocal laser scanning microscopy, and in vivo imaging of MDA-MB-231 tumor demonstrated the HFtn-PTX nanoparticles targeting ability to tumor cells. Cell apoptosis assay showed that HFtn-PTX had similar apoptotic characteristics on MDA-MB-231 cells as that of the free PTX. HFtn-PTX nanoparticles have higher in vivo therapeutic efficacy and lower systemic toxicity. The BALB/c mice model also confirmed the effectiveness of the nanoparticles. Specifically targeting to tumors and solving the solubility issue of water-insoluble drugs thus alleviating the side effects, HFtn can be an efficient hydrophobic drug delivery nanocarrier for further applications in cancer therapy.
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Affiliation(s)
- Ruike Li
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Yuanmeng Ma
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Yixin Dong
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Zhujun Zhao
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Chaoqun You
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China.,School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
| | - Shenlin Huang
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Xun Li
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Fei Wang
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Yu Zhang
- College of Chemical Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Products, Nanjing Forestry University, Nanjing 210037, P. R. China
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21
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Cui C, Cheng X, Yan L, Ding H, Guan X, Zhang W, Tian X, Hao C. Downregulation of TfR1 promotes progression of colorectal cancer via the JAK/STAT pathway. Cancer Manag Res 2019; 11:6323-6341. [PMID: 31372038 PMCID: PMC6628123 DOI: 10.2147/cmar.s198911] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 04/20/2019] [Indexed: 01/05/2023] Open
Abstract
Background: Colorectal cancer (CRC) is one of the most prevalent gastrointestinal malignancies. The incidence of CRC has been rapidly increasing in China. Transferrin receptor 1 (TfR1) is a key regulator of cellular iron homeostasis. Several studies have demonstrated TfR1 overexpression in a variety of human tumors, but the association between TfR1 and CRC remains unclear. Methods: TfR1 expression was evaluated in six CRC cell lines and tumor tissues. A total of 201 CRC patients were included for immunohistochemistry and 19 pairs of frozen tissues were used for real-time PCR. Cell proliferation, cell cycle, cell migration and invasion, and in vivo carcinogenesis were tested after downregulation of TfR1 by lentivirus. Protein microarray and Western blot analyses were used to explore the underlying mechanisms of TfR1 in CRC. Results: TfR1 expression was higher in CRC tissues than in normal tissues (57.2% vs 22.9%, P<0.001). TfR1 expression was obviously higher in CRC tissues with well differentiation (P=0.008), no lymph node metastasis (P=0.002), no distant metastasis (P=0.006), no vascular invasion (P<0.001) and early TNM stage (P=0.013). CRC patients with TfR1-positive expression had a better survival than those with TfR1-negative expression (P=0.044). Downregulation of TfR1 expression inhibited cell proliferation, promoted cells from G1 phase to S phase and facilitated cell migration and invasion. Knockdown of TfR1 also suppressed tumor growth in BALB/C-nu mice. Protein microarray and Western blot analyses showed that the Janus protein tyrosine kinase/signal transducer and activator of transcription pathway was activated along with downregulation of TfR1 expression. Conclusion: Though TfR1 was overexpressed in colorectal cancer tissues, there was evidence that downregulation of TfR1 could promote cancer progression.
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Affiliation(s)
- Can Cui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Hepato-Pancreato-Biliary Surgery, Peking University Cancer Hospital & Institute, Beijing 100142, People's Republic of China
| | - Xiaojing Cheng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Gastrointestinal Carcinoma Translational Research Laboratory, Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Liang Yan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Hepato-Pancreato-Biliary Surgery, Peking University Cancer Hospital & Institute, Beijing 100142, People's Republic of China
| | - Huirong Ding
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Central Laboratory, Peking University Cancer Hospital & Institute, Beijing 100142, People's Republic of China
| | - Xiaoya Guan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Hepato-Pancreato-Biliary Surgery, Peking University Cancer Hospital & Institute, Beijing 100142, People's Republic of China
| | - Wenlong Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Laboratory Animal, Peking University Cancer Hospital & Institute, Beijing 100142, People's Republic of China
| | - Xiuyun Tian
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Hepato-Pancreato-Biliary Surgery, Peking University Cancer Hospital & Institute, Beijing 100142, People's Republic of China
| | - Chunyi Hao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Hepato-Pancreato-Biliary Surgery, Peking University Cancer Hospital & Institute, Beijing 100142, People's Republic of China
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22
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Ye F, Chai W, Xie M, Yang M, Yu Y, Cao L, Yang L. HMGB1 regulates erastin-induced ferroptosis via RAS-JNK/p38 signaling in HL-60/NRAS Q61L cells. Am J Cancer Res 2019; 9:730-739. [PMID: 31105999 PMCID: PMC6511643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 03/04/2019] [Indexed: 06/09/2023] Open
Abstract
Ferroptosis is emerging as a new form of regulated cell death driven by oxidative injury promoting lipid peroxidation in an iron-dependent manner. High mobility group box 1 (HMGB1) plays an important role in leukemia pathogenesis and chemotherapy resistance. The mechanisms of ferroptosis in tumor pathogenesis and treatment have been a recent research focus but the role of HMGB1 in regulating ferroptosis especially in leukemia still remains largely unknown. Here, we shown that HMGB1 is a critical regulator of eratin-induced ferroptosis in HL-60 cell line expressing NRASQ61L (HL-60/NRASQ61L). Erastin enhanced ROS levels, thereby promoting cytosolic translocation of HMGB1 and enhancing cell death. Knockdown of HMGB1 decreased erastin-induced ROS generation and cell death in an iron-mediated lysosomal pathway in HL-60/NRASQ61L cells. Knockdown of HMGB1 or rat sarcoma (RAS), or pharmacological inhibition of JNK and p38 decreased TfR1 levels in HL-60/NRASQ61L cells. Importantly, these data were further supported by our in vivo experiment, in which xenografts formed by HMGB1 knockdown HL-60/NRASQ61L cells had lower PTGS2 and TfR1 expression than that in control mice. Taken together, these results suggest that HMGB1 is a novel regulator of ferroptosis via the RAS-JNK/p38 pathway and a potential drug target for therapeutic interventions in leukemia.
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Affiliation(s)
- Fanghua Ye
- Department of Pediatrics, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, People’s Republic of China
| | - Wenwen Chai
- Department of Nuclear Medicine, Hunan Cancer HospitalChangsha 410008, Hunan, People’s Republic of China
| | - Min Xie
- Department of Pediatrics, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, People’s Republic of China
| | - Minghua Yang
- Department of Pediatrics, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, People’s Republic of China
| | - Yan Yu
- Department of Pediatrics, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, People’s Republic of China
| | - Lizhi Cao
- Department of Pediatrics, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, People’s Republic of China
| | - Liangchun Yang
- Department of Pediatrics, Xiangya Hospital, Central South UniversityChangsha 410008, Hunan, People’s Republic of China
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23
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Abstract
An increasing amount of research has recently strengthened the case for the existence of iron dysmetabolism in prostate cancer. It is characterized with a wide array of differential expression of iron-related proteins compared to normal cells. These proteins control iron entry, cellular iron distribution but also iron exit from prostate cells. Iron dysmetabolism is not an exclusive feature of prostate cancer cells, but it is observed in other cells of the tumor microenvironment. Disrupting the machinery that secures iron for prostate cancer cells can retard tumor growth and its invasive potential. This review unveils the current understanding of the ways that prostate cancer cells secure iron in the tumor milieu and how can we exploit this knowledge for therapeutic purposes.
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Affiliation(s)
- Driton Vela
- Department of Physiology, University of Prishtina, Prishtina, Kosovo
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24
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Abstract
Over the last decades, considerable efforts have been put into developing active nanocarrier systems that cross the blood brain barrier (BBB) to treat brain-related diseases such as glioma tumors. However, to date none have been approved for clinical usage. Here, we show that a human H-ferritin (HFn) nanocarrier both successfully crosses the BBB and kills glioma tumor cells. Its principle point of entry is the HFn receptor (transferrin receptor 1), which is overexpressed in both BBB endothelial cells (ECs) and glioma cells. Importantly, we found that HFn enters and exits the BBB via the endosome compartment. In contrast, upon specifically targeting and entering glioma cells, nearly all of the HFn accumulated in the lysosomal compartment, resulting in the killing of glioma tumor cells, with no HFn accumulation in the surrounding healthy brain tissue. Thus, HFn is an ideal nanocarrier for glioma therapy and possesses the potential to serve as a therapeutic approach against a broad range of central nervous system diseases.
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MESH Headings
- Animals
- Antibiotics, Antineoplastic/administration & dosage
- Antibiotics, Antineoplastic/chemistry
- Antibiotics, Antineoplastic/pharmacology
- Blood-Brain Barrier/drug effects
- Blood-Brain Barrier/metabolism
- Disease Models, Animal
- Doxorubicin/administration & dosage
- Doxorubicin/chemistry
- Doxorubicin/pharmacology
- Drug Carriers/pharmacokinetics
- Drug Carriers/therapeutic use
- Drug Screening Assays, Antitumor
- Ferritins/pharmacokinetics
- Ferritins/therapeutic use
- Glioma/drug therapy
- Glioma/pathology
- Humans
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Nanoparticles/metabolism
- Nanoparticles/therapeutic use
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/pathology
- Tumor Cells, Cultured
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Affiliation(s)
- Kelong Fan
- Key Laboratory of Protein and Peptide Pharmaceuticals, CAS-University of Tokyo Joint Laboratory of Structural Virology and Immunology , Institute of Biophysics, Chinese Academy of Sciences , Beijing 100101 , China
| | - Xiaohua Jia
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences , Institute of Automation, Chinese Academy of Sciences , Beijing 100190 , China
| | - Meng Zhou
- Key Laboratory of Protein and Peptide Pharmaceuticals, CAS-University of Tokyo Joint Laboratory of Structural Virology and Immunology , Institute of Biophysics, Chinese Academy of Sciences , Beijing 100101 , China
- University of Chinese Academy of Sciences , 19A Yuquan Road , Beijing 100049 , China
| | - Kun Wang
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences , Institute of Automation, Chinese Academy of Sciences , Beijing 100190 , China
| | - João Conde
- School of Engineering and Materials Science , Queen Mary University of London , London E1 4NS , U.K
| | - Jiuyang He
- Key Laboratory of Protein and Peptide Pharmaceuticals, CAS-University of Tokyo Joint Laboratory of Structural Virology and Immunology , Institute of Biophysics, Chinese Academy of Sciences , Beijing 100101 , China
| | - Jie Tian
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences , Institute of Automation, Chinese Academy of Sciences , Beijing 100190 , China
| | - Xiyun Yan
- Key Laboratory of Protein and Peptide Pharmaceuticals, CAS-University of Tokyo Joint Laboratory of Structural Virology and Immunology , Institute of Biophysics, Chinese Academy of Sciences , Beijing 100101 , China
- University of Chinese Academy of Sciences , 19A Yuquan Road , Beijing 100049 , China
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25
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Kindrat I, Tryndyak V, de Conti A, Shpyleva S, Mudalige TK, Kobets T, Erstenyuk AM, Beland FA, Pogribny IP. MicroRNA-152-mediated dysregulation of hepatic transferrin receptor 1 in liver carcinogenesis. Oncotarget 2016; 7:1276-87. [PMID: 26657500 PMCID: PMC4811459 DOI: 10.18632/oncotarget.6004] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 10/06/2015] [Indexed: 02/06/2023] Open
Abstract
Over-expression of transferrin receptor 1 (TFRC) is observed in hepatocellular carcinoma (HCC); however, there is a lack of conclusive information regarding the mechanisms of this dysregulation. In the present study, we demonstrated a significant increase in the levels of TFRC mRNA and protein in preneoplastic livers from relevant experimental models of human hepatocarcinogenesis and in human HCC cells. Additionally, using the TCGA database, we demonstrated an over-expression of TFRC in human HCC tissue samples and a markedly decreased level of microRNA-152 (miR-152) when compared to non-tumor liver tissue. The results indicated that the increase in levels of TFRC in human HCC cells and human HCC tissue samples may be attributed, in part, to a post-transcriptional mechanism mediated by a down-regulation of miR-152. This was evidenced by a strong inverse correlation between the level of TFRC and the expression of miR-152 in human HCC cells (r = −0.99, p = 4. 7 × 10−9), and was confirmed by in vitro experiments showing that transfection of human HCC cell lines with miR-152 effectively suppressed TFRC expression. This suggests that miR-152-specific targeting of TFRC may provide a selective anticancer therapeutic approach for the treatment of HCC.
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Affiliation(s)
- Iryna Kindrat
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA.,Department of Biological and Medical Chemistry, Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine
| | - Volodymyr Tryndyak
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Aline de Conti
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Svitlana Shpyleva
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Thilak K Mudalige
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Tetyana Kobets
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Anna M Erstenyuk
- Department of Biological and Medical Chemistry, Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine
| | - Frederick A Beland
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Igor P Pogribny
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
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Yang A, Zhao J, Lu M, Gu Y, Zhu Y, Chen D, Fu J. Expression of Hepcidin and Ferroportin in the Placenta, and Ferritin and Transferrin Receptor 1 Levels in Maternal and Umbilical Cord Blood in Pregnant Women with and without Gestational Diabetes. Int J Environ Res Public Health 2016; 13:E766. [PMID: 27483296 DOI: 10.3390/ijerph13080766] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 07/05/2016] [Accepted: 07/19/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND Regulation of iron transfer from mother to fetus via the placenta is not fully understood and the relationship between stored iron status in the mothers' serum and gestational diabetes (GDM) in case-control studies is controversial. The present study aimed to detect circulating soluble transferrin receptor (sTfR) and ferritin levels in maternal and umbilical cord blood. We also examined the expression of hepcidin (Hep), transferrin receptor (TfR1), and ferroportin (FPN) in the placenta in pregnant women with and without GDM at full term. METHODS Eighty-two women participated (42 with GDM and 40 without GDM [controls]). Maternal samples were collected at 37-39 weeks' gestation. Umbilical cord blood was collected at birth. Ferritin and sTfR levels in maternal serum and umbilical cord blood, and Hep, TfR1, and FPN protein expression in plac enta were compared between the GDM and non-GDM groups. Serum ferritin (SF) was measured by electrochemiluminescence assay and sTfR was measured by ELISA. Hep, TfR1, and FPN expression was measured by immunohistochemistry. RESULTS Maternal serum sTfR levels were significantly elevated in the GDM group compared with the non-GDM group (p = 0.003). SF levels in cord blood in the GDM group were significantly higher than those in the non-GDM group (p = 0.003). However, maternal hemoglobin and SF, and umbilical cord sTfR levels were not different between the groups. In placental tissue, FPN expression was higher and hepcidin expression was lower in the GDM group compared with the non-GDM group (p = 0.000 and p = 0.044, respectively). There was no significant difference in TfR1 between the groups (p = 0.898). CONCLUSIONS Women with GDM transport iron more actively than those without GDM at term pregnancy. Maternal iron metabolism in GDM may play a role in fetal/placental iron demand and in the overall outcome of pregnancy.
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Affiliation(s)
- Tracy R Daniels-Wells
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine at UCLA, 10833 Le Conte Ave, CHS 54-140, Box 951782, Los Angeles, CA 90095-1782, USA
| | - Manuel L Penichet
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine at UCLA, 10833 Le Conte Ave, CHS 54-140, Box 951782, Los Angeles, CA 90095-1782, USA.,Department of Microbiology, Immunology, & Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.,The Molecular Biology Institute, UCLA, Los Angeles, CA USA.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA, USA.,UCLA AIDS Institute, CA, USA
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Chen Q, Xiao DS. Long-term aerobic exercise increases redox-active iron through nitric oxide in rat hippocampus. Nitric Oxide 2013; 36:1-10. [PMID: 24184442 DOI: 10.1016/j.niox.2013.10.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 09/10/2013] [Accepted: 10/22/2013] [Indexed: 12/30/2022]
Abstract
Adult hippocampus is highly vulnerable to iron-induced oxidative stress. Aerobic exercise has been proposed to reduce oxidative stress but the findings in the hippocampus are conflicting. This study aimed to observe the changes of redox-active iron and concomitant regulation of cellular iron homeostasis in the hippocampus by aerobic exercise, and possible regulatory effect of nitric oxide (NO). A randomized controlled study was designed in the rats with swimming exercise treatment (for 3 months) and/or an unselective inhibitor of NO synthase (NOS) (L-NAME) treatment. The results from the bleomycin-detectable iron assay showed additional redox-active iron in the hippocampus by exercise treatment. The results from nonheme iron content assay, combined with the redox-active iron content, showed increased storage iron content by exercise treatment. NOx (nitrate plus nitrite) assay showed increased NOx content by exercise treatment. The results from the Western blot assay showed decreased ferroportin expression, no changes of TfR1 and DMT1 expressions, increased IRP1 and IRP2 expression, increased expressions of eNOS and nNOS rather than iNOS. In these effects of exercise treatment, the increased redox-active iron content, storage iron content, IRP1 and IRP2 expressions were completely reversed by L-NAME treatment, and decreased ferroportin expression was in part reversed by L-NAME. L-NAME treatment completely inhibited increased NOx and both eNOS and nNOS expression in the hippocampus. Our findings suggest that aerobic exercise could increase the redox-active iron in the hippocampus, indicating an increase in the capacity to generate hydroxyl radicals through the Fenton reactions, and aerobic exercise-induced iron accumulation in the hippocampus might mainly result from the role of the endogenous NO.
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Affiliation(s)
- Qian Chen
- Department of Histology and Embryology, School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - De-Sheng Xiao
- Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, Guangdong Province, China.
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Jobarteh ML, Moore SE, Kennedy C, Gambling L, McArdle HJ. The effect of delay in collection and processing on RNA integrity in human placenta: experiences from rural Africa. Placenta 2014; 35:72-4. [PMID: 24125806 DOI: 10.1016/j.placenta.2013.08.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 08/28/2013] [Accepted: 08/29/2013] [Indexed: 12/04/2022]
Abstract
This paper examines the relationship between time to processing and RNA quality in placentas collected from women in a field setting in rural Gambia. Placental samples were collected from the villages and transferred to the laboratory. RNA was extracted using Trizol and integrity assessed using the RNA integrity number (RIN). Values were inversely correlated with delay in processing. Expression levels of candidate genes increased with decreasing RIN. Normalising to a housekeeper gene removed this artefact. We propose a cut-off point of 90 min from delivery, after which samples cannot be used for gene expression analysis.
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Whitnall M, Rahmanto YS, Huang MLH, Saletta F, Lok HC, Gutiérrez L, Lázaro FJ, Fleming AJ, St. Pierre TG, Mikhael MR, Ponka P, Richardson DR. Identification of nonferritin mitochondrial iron deposits in a mouse model of Friedreich ataxia. Proc Natl Acad Sci U S A 2012; 109:20590-5. [PMID: 23169664 PMCID: PMC3528580 DOI: 10.1073/pnas.1215349109] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
There is no effective treatment for the cardiomyopathy of the most common autosomal recessive ataxia, Friedreich ataxia (FA). This disease is due to decreased expression of the mitochondrial protein, frataxin, which leads to alterations in mitochondrial iron (Fe) metabolism. The identification of potentially toxic mitochondrial Fe deposits in FA suggests Fe plays a role in its pathogenesis. Studies using the muscle creatine kinase (MCK) conditional frataxin knockout mouse that mirrors the disease have demonstrated frataxin deletion alters cardiac Fe metabolism. Indeed, there are pronounced changes in Fe trafficking away from the cytosol to the mitochondrion, leading to a cytosolic Fe deficiency. Considering Fe deficiency can induce apoptosis and cell death, we examined the effect of dietary Fe supplementation, which led to body Fe loading and limited the cardiac hypertrophy in MCK mutants. Furthermore, this study indicates a unique effect of heart and skeletal muscle-specific frataxin deletion on systemic Fe metabolism. Namely, frataxin deletion induces a signaling mechanism to increase systemic Fe levels and Fe loading in tissues where frataxin expression is intact (i.e., liver, kidney, and spleen). Examining the mutant heart, native size-exclusion chromatography, transmission electron microscopy, Mössbauer spectroscopy, and magnetic susceptibility measurements demonstrated that in the absence of frataxin, mitochondria contained biomineral Fe aggregates, which were distinctly different from isolated mammalian ferritin molecules. These mitochondrial aggregates of Fe, phosphorus, and sulfur, probably contribute to the oxidative stress and pathology observed in the absence of frataxin.
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MESH Headings
- Animals
- Cardiomegaly/metabolism
- Cardiomegaly/pathology
- Cardiomegaly/prevention & control
- Creatine Kinase, MM Form/genetics
- Creatine Kinase, MM Form/metabolism
- Disease Models, Animal
- Friedreich Ataxia/genetics
- Friedreich Ataxia/metabolism
- Friedreich Ataxia/pathology
- Humans
- Iron/blood
- Iron/metabolism
- Iron Regulatory Protein 2/metabolism
- Iron, Dietary/administration & dosage
- Iron-Binding Proteins/antagonists & inhibitors
- Iron-Binding Proteins/genetics
- Iron-Binding Proteins/metabolism
- Liver/metabolism
- Mice
- Mice, Knockout
- Mice, Mutant Strains
- Microscopy, Electron, Transmission
- Mitochondria, Heart/metabolism
- Myocardium/metabolism
- Myocardium/ultrastructure
- Signal Transduction
- Spectroscopy, Mossbauer
- Frataxin
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Affiliation(s)
- Megan Whitnall
- Department of Pathology, University of Sydney, Sydney 2006, Australia
| | | | | | - Federica Saletta
- Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Hiu Chuen Lok
- Department of Pathology, University of Sydney, Sydney 2006, Australia
| | - Lucía Gutiérrez
- Instituto de Ciencia de Materiales de Madrid/Consejo Superior de Investigaciones Científicas, Cantoblanco, 28049 Madrid, Spain
- School of Physics, University of Western Australia, Perth 6009, Australia
| | - Francisco J. Lázaro
- Departamento de Ciencia y Tecnología de Materiales y Fluidos, Universidad de Zaragoza, 50018 Zaragoza, Spain; and
| | - Adam J. Fleming
- School of Physics, University of Western Australia, Perth 6009, Australia
| | - Tim G. St. Pierre
- School of Physics, University of Western Australia, Perth 6009, Australia
| | - Marc R. Mikhael
- Lady Davis Institute for Medical Research, McGill University, Montreal, QC, Canada H3T 1E2
| | - Prem Ponka
- Lady Davis Institute for Medical Research, McGill University, Montreal, QC, Canada H3T 1E2
| | - Des R. Richardson
- Department of Pathology, University of Sydney, Sydney 2006, Australia
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