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Sun Y, Huang D, Li J, Zhou Y, Zhou G, Chen Q. Inhibition of STAT3-NF-κB pathway facilitates SSPH I-induced ferroptosis in HepG2 cells. Med Oncol 2024; 41:184. [PMID: 38909132 DOI: 10.1007/s12032-024-02425-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 06/08/2024] [Indexed: 06/24/2024]
Abstract
Hepatocellular carcinoma (HCC), a highly lethal solid tumor, has shown responsiveness to ferroptosis inducers, presenting new avenues in cancer treatment. Our study focuses on the roles of STAT3 and Nf-κB in regulating ferroptosis, particularly their interaction in this process. Using HepG2 cells, we employed specific inhibitors (Stattic for STAT3 and Bay11-7082 for Nf-κB) and a ferroptosis inducer, SSPH I, to dissect their collective impact on ferroptosis. Our findings reveal that inhibiting STAT3 and Nf-κB enhances ferroptosis and cytotoxicity induced by SSPH I. This is mechanistically linked to alterations in iron metabolism-related proteins and GPX4 resulting from SSPH I action, which consequently triggers a STAT3-dependent activation of Nf-κB. The inhibition of STAT3 and Nf-κB led to increased intracellular ROS, MDA, and Fe2+, along with significant GSH depletion, thereby intensifying lipid peroxidation and iron overload in HepG2 cells. This study offers a deeper understanding of the ferroptosis mechanisms in HCC. It highlights the therapeutic potential of targeting STAT3 and Nf-κB pathways to enhance the efficacy of ferroptosis-based treatments.
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Affiliation(s)
- Yuewen Sun
- Guangxi University of Chinese Medicine, Nanning, China.
| | - Dan Huang
- Guangxi Vocational University of Agriculture, Nanning, China
| | - Jianzhe Li
- Guangxi University of Chinese Medicine, Nanning, China
| | - Ying Zhou
- Guangxi University of Chinese Medicine, Nanning, China
| | - Guangyu Zhou
- Guangxi University of Chinese Medicine, Nanning, China
| | - Qingjie Chen
- Guangxi University of Chinese Medicine, Nanning, China
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2
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Shen X, Yu Z, Wei C, Hu C, Chen J. Iron metabolism and ferroptosis in nonalcoholic fatty liver disease: what is our next step? Am J Physiol Endocrinol Metab 2024; 326:E767-E775. [PMID: 38506752 DOI: 10.1152/ajpendo.00260.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 03/06/2024] [Accepted: 03/09/2024] [Indexed: 03/21/2024]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease with increasing prevalence worldwide. NAFLD could develop from simple hepatic steatosis to nonalcoholic steatohepatitis (NASH), NASH-related fibrosis, cirrhosis, and even hepatocellular carcinoma. However, the mechanism of NAFLD development has not yet been fully defined. Recently, emerging evidence shows that the dysregulated iron metabolism marked by elevated serum ferritin, and ferroptosis are involved in the NAFLD. Understanding iron metabolism and ferroptosis can shed light on the mechanisms of NAFLD development. Here, we summarized studies on iron metabolism and the ferroptosis process involved in NAFLD development to highlight potential medications and therapies for treating NAFLD.
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Affiliation(s)
- Xiang Shen
- Munich Medical Research School, Ludwig Maximilian University of Munich, Munich, Germany
| | - Ziqi Yu
- Munich Medical Research School, Ludwig Maximilian University of Munich, Munich, Germany
| | - Changli Wei
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Nanchang Medical College, Jiangxi Provincial People's Hospital, Nanchang, People's Republic of China
| | - Chong Hu
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Nanchang Medical College, Jiangxi Provincial People's Hospital, Nanchang, People's Republic of China
| | - Jianyong Chen
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Nanchang Medical College, Jiangxi Provincial People's Hospital, Nanchang, People's Republic of China
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3
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Chang J, Debreli Coskun M, Kim J. Inflammation alters iron distribution in bone and spleen in mice. Metallomics 2023; 15:mfad055. [PMID: 37738439 PMCID: PMC10563149 DOI: 10.1093/mtomcs/mfad055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 09/15/2023] [Indexed: 09/24/2023]
Abstract
Anemia of inflammation (or inflammation-associated anemia) decreases the quality of life in billions of patients suffering from various inflammatory diseases, such as infection, autoimmune diseases, and cancer, associated with a prolonged state of immune activation. While proper utilization of iron, a nutrient metal essential for erythropoiesis, is important for the prevention of anemia, the alteration of body iron homeostasis upon inflammation, which can contribute to the development of anemia, is not completely understood. Thus, we sought to examine temporal and spatial changes in the distribution of iron and iron-associated molecules during inflammation in mice. To induce inflammation, C57BL/6J mice were injected with turpentine oil weekly for 3 weeks, which resulted in anemia, decreased protein expression of ferroportin, a cellular iron exporter, in the spleen, duodenum, and liver, and increased iron stores in the duodenum and spleen. Tracer kinetic studies after oral administration of 59Fe revealed that more iron was found in the spleen and less in the femur bone in turpentine oil-injected mice compared to the saline-injected mice, indicating tissue-specific abnormalities in iron distribution during inflammation. However, there was no difference in the utilization of iron for red blood cell production after turpentine oil injection; instead, serum hemopexin level and lactate dehydrogenase activity were increased, suggesting increased red blood cell destruction upon inflammation. Our findings provide an improved understanding of temporal and spatial changes in the distribution and utilization of iron during inflammation.
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Affiliation(s)
- JuOae Chang
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
- School of Pharmacy, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, South Korea
| | - Melis Debreli Coskun
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
- Department of Biomedical & Nutritional Sciences, University of Massachusetts Lowell, 3 Solomont Way, Suite 4, Lowell, MA 01854, USA
| | - Jonghan Kim
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
- Department of Biomedical & Nutritional Sciences, University of Massachusetts Lowell, 3 Solomont Way, Suite 4, Lowell, MA 01854, USA
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4
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Wang X, Tan X, Zhang J, Wu J, Shi H. The emerging roles of MAPK-AMPK in ferroptosis regulatory network. Cell Commun Signal 2023; 21:200. [PMID: 37580745 PMCID: PMC10424420 DOI: 10.1186/s12964-023-01170-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 05/20/2023] [Indexed: 08/16/2023] Open
Abstract
Ferroptosis, a newform of programmed cell death, driven by peroxidative damages of polyunsaturated-fatty-acid-containing phospholipids in cellular membranes and is extremely dependent on iron ions, which is differs characteristics from traditional cell death has attracted greater attention. Based on the curiosity of this new form of regulated cell death, there has a tremendous progress in the field of mechanistic understanding of ferroptosis recent years. Ferroptosis is closely associated with the development of many diseases and involved in many diseases related signaling pathways. Not only a variety of oncoproteins and tumor suppressors can regulate ferroptosis, but multiple oncogenic signaling pathways can also have a regulatory effect on ferroptosis. Ferroptosis results in the accumulation of large amounts of lipid peroxides thus involving the onset of oxidative stress and energy stress responses. The MAPK pathway plays a critical role in oxidative stress and AMPK acts as a sensor of cellular energy and is involved in the regulation of the energy stress response. Moreover, activation of AMPK can induce the occurrence of autophagy-dependent ferroptosis and p53-activated ferroptosis. In recent years, there have been new advances in the study of molecular mechanisms related to the regulation of ferroptosis by both pathways. In this review, we will summarize the molecular mechanisms by which the MAPK-AMPK signaling pathway regulates ferroptosis. Meanwhile, we sorted out the mysterious relationship between MAPK and AMPK, described the crosstalk among ferroptosis and MAPK-AMPK signaling pathways, and summarized the relevant ferroptosis inducers targeting this regulatory network. This will provide a new field for future research on ferroptosis mechanisms and provide a new vision for cancer treatment strategies. Video Abstract.
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Affiliation(s)
- Xinyue Wang
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, 443002, China
- College of Basic Medical Science, China Three Gorges University, Yichang, 443002, China
| | - Xiao Tan
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, 443002, China.
- College of Basic Medical Science, China Three Gorges University, Yichang, 443002, China.
| | - Jinping Zhang
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, 443002, China
- College of Basic Medical Science, China Three Gorges University, Yichang, 443002, China
| | - Jiaping Wu
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, 443002, China
- College of Basic Medical Science, China Three Gorges University, Yichang, 443002, China
| | - Hongjuan Shi
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, 443002, China
- College of Basic Medical Science, China Three Gorges University, Yichang, 443002, China
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5
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Helman SL, Zhou J, Fuqua BK, Lu Y, Collins JF, Chen H, Vulpe CD, Anderson GJ, Frazer DM. The biology of mammalian multi-copper ferroxidases. Biometals 2023; 36:263-281. [PMID: 35167013 PMCID: PMC9376197 DOI: 10.1007/s10534-022-00370-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 02/04/2022] [Indexed: 12/24/2022]
Abstract
The mammalian multicopper ferroxidases (MCFs) ceruloplasmin (CP), hephaestin (HEPH) and zyklopen (ZP) comprise a family of conserved enzymes that are essential for body iron homeostasis. Each of these enzymes contains six biosynthetically incorporated copper atoms which act as intermediate electron acceptors, and the oxidation of iron is associated with the four electron reduction of dioxygen to generate two water molecules. CP occurs in both a secreted and GPI-linked (membrane-bound) form, while HEPH and ZP each contain a single C-terminal transmembrane domain. These enzymes function to ensure the efficient oxidation of iron so that it can be effectively released from tissues via the iron export protein ferroportin and subsequently bound to the iron carrier protein transferrin in the blood. CP is particularly important in facilitating iron release from the liver and central nervous system, HEPH is the major MCF in the small intestine and is critical for dietary iron absorption, and ZP is important for normal hair development. CP and HEPH (and possibly ZP) function in multiple tissues. These proteins also play other (non-iron-related) physiological roles, but many of these are ill-defined. In addition to disrupting iron homeostasis, MCF dysfunction perturbs neurological and immune function, alters cancer susceptibility, and causes hair loss, but, despite their importance, how MCFs co-ordinately maintain body iron homeostasis and perform other functions remains incompletely understood.
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Affiliation(s)
- Sheridan L Helman
- Molecular Nutrition Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Jie Zhou
- Department of Physiological Sciences, University of Florida, Gainsville, FL, USA
| | - Brie K Fuqua
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Yan Lu
- Iron Metabolism Laboratory, QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia
- Mucosal Immunology Group, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - James F Collins
- Food Science and Human Nutrition Department, University of Florida, Gainsville, FL, USA
| | - Huijun Chen
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Christopher D Vulpe
- Department of Physiological Sciences, University of Florida, Gainsville, FL, USA
| | - Gregory J Anderson
- Iron Metabolism Laboratory, QIMR Berghofer Medical Research Institute, 300 Herston Road, Brisbane, QLD, 4006, Australia.
- School of Chemistry and Molecular Bioscience, University of Queensland, Brisbane, Australia.
| | - David M Frazer
- Molecular Nutrition Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Australia
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6
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Repression of the iron exporter ferroportin may contribute to hepatocyte iron overload in individuals with type 2 diabetes. Mol Metab 2022; 66:101644. [PMID: 36436807 PMCID: PMC9719871 DOI: 10.1016/j.molmet.2022.101644] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/04/2022] [Accepted: 11/19/2022] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE Hyperferremia and hyperferritinemia are observed in patients and disease models of type 2 diabetes mellitus (T2DM). Likewise, patients with genetic iron overload diseases develop diabetes, suggesting a tight link between iron metabolism and diabetes. The liver controls systemic iron homeostasis and is a central organ for T2DM. Here, we investigate how the control of iron metabolism in hepatocytes is affected by T2DM. METHODS Perls Prussian blue staining was applied to analyze iron distribution in liver biopsies of T2DM patients. To identify molecular mechanisms underlying hepatocyte iron accumulation we established cellular models of insulin resistance by treatment with palmitate and insulin. RESULTS We show that a subset of T2DM patients accumulates iron in hepatocytes, a finding mirrored in a hepatocyte model of insulin resistance. Iron accumulation can be explained by the repression of the iron exporter ferroportin upon palmitate and/or insulin treatment. While during palmitate treatment the activation of the iron regulatory hormone hepcidin may contribute to reducing ferroportin protein levels in a cell-autonomous manner, insulin treatment decreases ferroportin transcription via the PI3K/AKT and Ras/Raf/MEK/ERK signaling pathways. CONCLUSION Repression of ferroportin at the transcriptional and post-transcriptional level may contribute to iron accumulation in hepatocytes observed in a subset of patients with T2DM.
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7
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Wang N, Wang W, Wang X, Mang G, Chen J, Yan X, Tong Z, Yang Q, Wang M, Chen L, Sun P, Yang Y, Cui J, Yang M, Zhang Y, Wang D, Wu J, Zhang M, Yu B. Histone Lactylation Boosts Reparative Gene Activation Post-Myocardial Infarction. Circ Res 2022; 131:893-908. [PMID: 36268709 DOI: 10.1161/circresaha.122.320488] [Citation(s) in RCA: 71] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND Inflammation resolution and cardiac repair initiation after myocardial infarction (MI) require timely activation of reparative signals. Histone lactylation confers macrophage homeostatic gene expression signatures via transcriptional regulation. However, the role of histone lactylation in the repair response post-MI remains unclear. We aimed to investigate whether histone lactylation induces reparative gene expression in monocytes early and remotely post-MI. METHODS Single-cell transcriptome data indicated that reparative genes were activated early and remotely in bone marrow and circulating monocytes before cardiac recruitment. Western blotting and immunofluorescence staining revealed increases in histone lactylation levels, including the previously identified histone H3K18 lactylation in monocyte-macrophages early post-MI. Through joint CUT&Tag and RNA-sequencing analyses, we identified Lrg1, Vegf-a, and IL-10 as histone H3K18 lactylation target genes. The increased modification and expression levels of these target genes post-MI were verified by chromatin immunoprecipitation-qPCR and reverse transcription-qPCR. RESULTS We demonstrated that histone lactylation regulates the anti-inflammatory and pro-angiogenic dual activities of monocyte-macrophages by facilitating reparative gene transcription and confirmed that histone lactylation favors a reparative environment and improves cardiac function post-MI. Furthermore, we explored the potential positive role of monocyte histone lactylation in reperfused MI. Mechanistically, we provided new evidence that monocytes undergo metabolic reprogramming in the early stage of MI and demonstrated that dysregulated glycolysis and MCT1 (monocarboxylate transporter 1)-mediated lactate transport promote histone lactylation. Finally, we revealed the catalytic effect of IL (interleukin)-1β-dependent GCN5 (general control non-depressible 5) recruitment on histone H3K18 lactylation and elucidated its potential role as an upstream regulatory element in the regulation of monocyte histone lactylation and downstream reparative gene expression post-MI. CONCLUSIONS Histone lactylation promotes early remote activation of the reparative transcriptional response in monocytes, which is essential for the establishment of immune homeostasis and timely activation of the cardiac repair process post-MI.
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Affiliation(s)
- Naixin Wang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Weiwei Wang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Xiaoqi Wang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Ge Mang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Jianfeng Chen
- Experimental Animal Centre (J. Chen), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Xiangyu Yan
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Zhonghua Tong
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Qiannan Yang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Mengdi Wang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Liangqi Chen
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Ping Sun
- Department of Ultrasound (P.S.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Yupeng Yang
- Guoke Biotechnology Co., Ltd., Changping District, Beijing, China (Y.Y.)
| | - Jingxuan Cui
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Mian Yang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Yafei Zhang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Dongni Wang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Jian Wu
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Maomao Zhang
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
| | - Bo Yu
- Department of Cardiology (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.), the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China.,The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin, Heilongjiang Province, China (N.W., W.W., X.W., G.M., X.Y., Z.T., Q.Y., M.W., L.C., P.S., J. Cui, M.Y., Y.Z., D.W., J.W., M.Z., B.Y.)
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8
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Lactoferrin Binding to SARS-CoV-2 Spike Glycoprotein Blocks Pseudoviral Entry and Relieves Iron Protein Dysregulation in Several In Vitro Models. Pharmaceutics 2022; 14:pharmaceutics14102111. [PMID: 36297546 PMCID: PMC9612385 DOI: 10.3390/pharmaceutics14102111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/22/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
SARS-CoV-2 causes COVID-19, a predominantly pulmonary disease characterized by a burst of pro-inflammatory cytokines and an increase in free iron. The viral glycoprotein Spike mediates fusion to the host cell membrane, but its role as a virulence factor is largely unknown. Recently, the antiviral activity of lactoferrin against SARS-CoV-2 was demonstrated in vitro and shown to occur via binding to cell surface receptors, and its putative interaction with Spike was suggested by in silico analyses. We investigated the anti-SARS-CoV-2 activity of bovine and human lactoferrins in epithelial and macrophagic cells using a Spike-decorated pseudovirus. Lactoferrin inhibited pseudoviral fusion and counteracted the deleterious effects of Spike on iron and inflammatory homeostasis by restoring basal levels of iron-handling proteins and of proinflammatory cytokines IL-1β and IL-6. Using pull-down assays, we experimentally proved for the first time that lactoferrin binds to Spike, immediately suggesting a mechanism for the observed effects. The contribution of transferrin receptor 1 to Spike-mediated cell fusion was also experimentally demonstrated. In silico analyses showed that lactoferrin interacts with transferrin receptor 1, suggesting a multifaceted mechanism of action for lactoferrin. Our results give hope for the use of bovine lactoferrin, already available as a nutraceutical, as an adjuvant to standard therapies in COVID-19.
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9
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PPAR-γ Agonist Pioglitazone Restored Mouse Liver mRNA Expression of Clock Genes and Inflammation-Related Genes Disrupted by Reversed Feeding. PPAR Res 2022; 2022:7537210. [PMID: 35663475 PMCID: PMC9162826 DOI: 10.1155/2022/7537210] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/27/2022] [Accepted: 05/03/2022] [Indexed: 11/17/2022] Open
Abstract
Introduction The master clock, which is located in the suprachiasmatic nucleus (SCN), harmonizes clock genes present in the liver to synchronize life rhythms and bioactivity with the surrounding environment. The reversed feeding disrupts the expression of clock genes in the liver. Recently, a novel role of PPAR-γ as a regulator in correlating circadian rhythm and metabolism was demonstrated. This study examined the influence of PPAR-γ agonist pioglitazone (PG) on the mRNA expression profile of principle clock genes and inflammation-related genes in the mouse liver disrupted by reverse feeding. Methods Mice were randomly assigned to daytime-feeding and nighttime-feeding groups. Mice in daytime-feeding groups received food from 7 AM to 7 PM, and mice in nighttime-feeding groups received food from 7 PM to 7 AM. PG was administered in the dose of 20 mg/kg per os as aqueous suspension 40 μl at 7 AM or 7 PM. Each group consisted of 12 animals. On day 8 of the feeding intervention, mice were sacrificed by cervical dislocation at noon (05 hours after light onset (HALO)) and midnight (HALO 17). Liver expressions of Bmal1, Clock, Rev-erb alpha, Cry1, Cry2, Per1, Per2, Cxcl5, Nrf2, and Ppar-γ were determined by quantitative reverse transcription PCR. Liver expression of PPAR-γ, pNF-κB, and IL-6 was determined by Western blotting. Glucose, ceruloplasmin, total cholesterol, triglyceride concentrations, and ALT and AST activities were measured in sera by photometric methods. The null hypothesis tested was that PG and the time of its administration have no influence on the clock gene expression impaired by reverse feeding. Results Administration of PG at 7 AM to nighttime-feeding mice did not reveal any influence on the expression of the clock or inflammation-related genes either at midnight or at noon. In the daytime-feeding group, PG intake at 7 PM led to an increase in Per2 and Rev-erb alpha mRNA at noon, an increase in Ppar-γ mRNA at midnight, and a decrease in Nfκb (p65) mRNA at noon. In general, PG administration at 7 PM slightly normalized the impaired expression of clock genes and increased anti-inflammatory potency impaired by reversed feeding. This pattern was supported by biochemical substrate levels—glucose, total cholesterol, ALT, and AST activities. The decrease in NF-κB led to the inhibition of serum ceruloplasmin levels as well as IL-6 in liver tissue. According to our data, PG intake at 7 PM exerts strong normalization of clock gene expression with a further increase in Nrf2 and, especially, Ppar-γ and PPAR-γ expression with inhibition of Nfκb and pNF-κB expression in daytime-feeding mice. These expression changes resulted in decreased hyperglycemia, hypercholesterolemia, ALT, and AST activities. Thus, PG had a potent chronopharmacological effect when administered at 7 PM to daytime-feeding mice. Conclusions Our study indicates that reversed feeding induced the disruption of mouse liver circadian expression pattern of clock genes accompanied by increasing Nfκb and pNF-κB and IL-6 expression and decreasing Nrf2 and PPAR-γ. Administration of PG restored the clock gene expression profile and decreased Nfκb, pNF-κB, and IL-6, as well as increased Nrf2, Ppar-γ, and PPAR-γ expression. PG intake at 7 PM was more effective than at 7 AM in reversed feeding mice.
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10
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Yang Y, Wang Y, Guo L, Gao W, Tang TL, Yan M. Interaction between macrophages and ferroptosis. Cell Death Dis 2022; 13:355. [PMID: 35429990 PMCID: PMC9013379 DOI: 10.1038/s41419-022-04775-z] [Citation(s) in RCA: 92] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/17/2022] [Accepted: 03/25/2022] [Indexed: 02/06/2023]
Abstract
Abstract Ferroptosis, a newly discovered iron-dependent cell death pathway, is characterized by lipid peroxidation and GSH depletion mediated by iron metabolism and is morphologically, biologically and genetically different from other programmed cell deaths. Besides, ferroptosis is usually found accompanied by inflammatory reactions. So far, it has been found participating in the development of many kinds of diseases. Macrophages are a group of immune cells that widely exist in our body for host defense and play an important role in tissue homeostasis by mediating inflammation and regulating iron, lipid and amino acid metabolisms through their unique functions like phagocytosis and efferocytosis, cytokines secretion and ROS production under different polarization. According to these common points in ferroptosis characteristics and macrophages functions, it’s obvious that there must be relationship between macrophages and ferroptosis. Therefore, our review aims at revealing the interaction between macrophages and ferroptosis concerning three metabolisms and integrating the application of certain relationship in curing diseases, mostly cancer. Finally, we also provide inspirations for further studies in therapy for some diseases by targeting certain resident macrophages in distinct tissues to regulate ferroptosis. Facts Ferroptosis is considered as a newly discovered form characterized by its nonapoptotic and iron-dependent lipid hydroperoxide, concerning iron, lipid and amino acid metabolisms. Ferroptosis has been widely found playing a crucial part in various diseases, including hepatic diseases, neurological diseases, cancer, etc. Macrophages are phagocytic immune cells, widely existing and owning various functions such as phagocytosis and efferocytosis, cytokines secretion and ROS production. Macrophages are proved to participate in mediating metabolisms and initiating immune reactions to maintain balance in our body. Recent studies try to treat cancer by altering macrophages’ polarization which damages tumor microenvironment and induces ferroptosis of cancer cells.
Open questions How do macrophages regulate ferroptosis of other tissue cells specifically? Can we use the interaction between macrophages and ferroptosis in treating diseases other than cancer? What can we do to treat diseases related to ferroptosis by targeting macrophages? Is the use of the relationship between macrophages and ferroptosis more effective than other therapies when treating diseases?
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Affiliation(s)
- Yan Yang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Yu Wang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China.,Xiangya School of Medicine, Central South University, Changsha, China
| | - Lin Guo
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Wen Gao
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China.,Xiangya School of Medicine, Central South University, Changsha, China
| | - Ting-Li Tang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China
| | - Miao Yan
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, China.
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11
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Zhang Y, Chen Z, Chen JG, Chen XF, Gu DH, Liu ZM, Gao YD, Zheng B. Ceruloplasmin overexpression is associated with oncogenic pathways and poorer survival rates in clear-cell renal cell carcinoma. FEBS Open Bio 2021; 11:2988-3004. [PMID: 34449964 PMCID: PMC8564342 DOI: 10.1002/2211-5463.13283] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 07/28/2021] [Accepted: 08/26/2021] [Indexed: 01/25/2023] Open
Abstract
Clear-cell renal cell carcinoma (ccRCC) is the most prevalent renal malignancy. The pathogenesis of the disease is currently poorly understood, and the prognosis is poor. Therefore, in this study, we focused on exploring and identifying genes and signal transduction pathways that are closely related to ccRCC. Differentially expressed genes (DEGs) were analyzed using the renal cell oncogene expression profiles GSE100666 and GSE68417. DAVID evaluation of gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses was used. We constructed a protein-protein interaction (PPI) network of DEGS using Cytoscape software and analyzed the submodules with the CytoHubba plugin. Finally, we performed western blot, immunohistochemistry, and PCR validation by collecting tissues, and also utilized cells for in vitro functional analysis of ceruloplasmin (CP). In total, 202 DEGs (52 upregulated and 150 downregulated genes) were identified. Upregulated DEGs are significantly rich in angiogenesis, cell adhesion, and response to hypoxia, whereas downregulated DEGs are involved in intracellular pH regulation, excretion, coagulation, and chloride transmembrane transport. We selected the interactions of the top 20 hub genes provided by the PPI network, all of which are involved in important physiological pathways in vivo, such as complement and coagulation cascades. Tissue protein assays demonstrated that renal cancer highly expressed CP, while in vitro experiments showed that CP could promote the invasion of renal cancer cells. Our study suggests that ALB, C3, LOX, HRG, CXCR4, GPC3, SLC12A3, CP, and CASR may be involved in the development of ccRCC, and is expected to provide theoretical support for future studies on the diagnosis and targeted therapy of ccRCC.
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Affiliation(s)
- Yong Zhang
- Department of Urology, The Second Affiliated Hospital of Nantong University, China.,Department of Medical Research Center, The Second Affiliated Hospital of Nantong University, China
| | - Zhan Chen
- Department of Urology, The Second Affiliated Hospital of Nantong University, China.,Department of Medical Research Center, The Second Affiliated Hospital of Nantong University, China
| | - Jian-Gang Chen
- Department of Urology, The Second Affiliated Hospital of Nantong University, China
| | - Xin-Feng Chen
- Department of Urology, The Second Affiliated Hospital of Nantong University, China
| | - Dong-Hua Gu
- Department of Urology, The Second Affiliated Hospital of Nantong University, China
| | - Zhen-Min Liu
- Department of Urology, The Second Affiliated Hospital of Nantong University, China
| | - Ya-Dong Gao
- Department of Medical Research Center, The Second Affiliated Hospital of Nantong University, China.,Department of Gastroenterology, The Second Affiliated Hospital of Nantong University, China
| | - Bing Zheng
- Department of Urology, The Second Affiliated Hospital of Nantong University, China
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12
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Landi C, Cameli P, Vantaggiato L, Bergantini L, d'Alessandro M, Perruzza M, Carleo A, Shaba E, Di Giuseppe F, Angelucci S, Bargagli E, Bini L. Ceruloplasmin and oxidative stress in severe eosinophilic asthma patients treated with Mepolizumab and Benralizumab. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1869:140563. [PMID: 33176218 DOI: 10.1016/j.bbapap.2020.140563] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/16/2020] [Accepted: 11/05/2020] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Severe eosinophilic asthma has been associated with Th2 airway inflammation and elevated proinflammatory cytokines and chemokines, such as IL-5. Precision therapies have recently been shown to improve asthma symptoms with a steroid-sparing effect. Two such therapies, Benralizumab and Mepolizumab, humanized IgG antibodies directed against the IL-5 receptor and IL-5, have been approved for severe eosinophilic asthma. METHODS Here we used a differential proteomic approach to analyse serum from patients with severe eosinophilic asthma treated with Benralizumab and Mepolizumab in a search for differential molecular modifications responsible of their effects. Enrichment analysis of differential proteins was performed for the two treatments. RESULTS AND DISCUSSION After one month of Benralizumab treatment we detected up-regulation of certain protein species of the antioxidant ceruloplasmin. To investigate oxidative stress, we performed redox proteomics which detected lower oxidative burst after one month of Benralizumab treatment than in the pre-treatment phase or after one month of Mepolizumab therapy.
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Affiliation(s)
- Claudia Landi
- Functional Proteomics Lab, Department of Life Sciences, University of Siena, Siena, Italy; UOC Respiratory Diseases and Lung Transplantation, Department Internal and Specialist Medicine, University of Siena, Siena, Italy
| | - Paolo Cameli
- UOC Respiratory Diseases and Lung Transplantation, Department Internal and Specialist Medicine, University of Siena, Siena, Italy
| | - Lorenza Vantaggiato
- Functional Proteomics Lab, Department of Life Sciences, University of Siena, Siena, Italy
| | - Laura Bergantini
- UOC Respiratory Diseases and Lung Transplantation, Department Internal and Specialist Medicine, University of Siena, Siena, Italy
| | - Miriana d'Alessandro
- UOC Respiratory Diseases and Lung Transplantation, Department Internal and Specialist Medicine, University of Siena, Siena, Italy
| | - Marco Perruzza
- UOC Respiratory Diseases and Lung Transplantation, Department Internal and Specialist Medicine, University of Siena, Siena, Italy
| | - Alfonso Carleo
- Department of Pulmonology, Hannover Medical School, Hannover, Germany
| | - Enxhi Shaba
- Functional Proteomics Lab, Department of Life Sciences, University of Siena, Siena, Italy
| | - Fabrizio Di Giuseppe
- Dept. Medical, Oral & Biotechnological Sciences, Dentistry and Biotechnology, and Proteomics Unit, Centre of Advanced Studies and Technoloy, "G. d'Annunzio", University of Chieti-Pescara, Italy
| | - Stefania Angelucci
- Dept. Medical, Oral & Biotechnological Sciences, Dentistry and Biotechnology, and Proteomics Unit, Centre of Advanced Studies and Technoloy, "G. d'Annunzio", University of Chieti-Pescara, Italy
| | - Elena Bargagli
- UOC Respiratory Diseases and Lung Transplantation, Department Internal and Specialist Medicine, University of Siena, Siena, Italy.
| | - Luca Bini
- Functional Proteomics Lab, Department of Life Sciences, University of Siena, Siena, Italy
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13
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Wang PW, Wu TH, Pan TL, Chen MH, Goto S, Chen CL. Integrated Proteome and Cytokine Profiles Reveal Ceruloplasmin Eliciting Liver Allograft Tolerance via Antioxidant Cascades. Front Immunol 2018; 9:2216. [PMID: 30319655 PMCID: PMC6168655 DOI: 10.3389/fimmu.2018.02216] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/06/2018] [Indexed: 12/27/2022] Open
Abstract
Acute rejection (AR) and spontaneous tolerance may occur after allograft orthotopic liver transplants (OLT) performed in certain combinations of donor and recipient rat strains, yet the underlying molecular cascades involved in these conditions remain poorly understood. Comprehensive analysis with proteomic tools revealed that ceruloplasmin was highly expressed during the tolerant period on day 63 post-OLT (POD 63) compared to the rejected samples on POD 14. Meanwhile, cytokine expression profiles implied that the inflammation was significantly stimulated in the AR subjects. Again, protein carbonylation was dramatically upregulated in the rejected subject within the tolerant group. Knockdown of ceruloplasmin would elicit more severe ROS damage, leading to cell death in the presence of H2O2, which induced Nrf2 cascade and the recovery of ceruloplasmin to mediate spontaneous tolerance. In summary, ceruloplasmin may contribute to amending the oxidative stress that eventually causes cell apoptosis and to maintaining the survival of hepatocytes in a drug-free tolerance OLT model.
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Affiliation(s)
- Pei-Wen Wang
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Tung-Ho Wu
- Division of Cardiovascular Surgery, Veterans General Hospital, Kaohsiung, Taiwan
| | - Tai-Long Pan
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan.,Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Liver Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Research Center for Food and Cosmetic Safety and Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Mu-Hong Chen
- Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Psychiatry, College of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Shigeru Goto
- Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chao-Long Chen
- Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
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14
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Matsuoka R, Shiba-Ishii A, Nakano N, Togayachi A, Sakashita S, Sato Y, Minami Y, Noguchi M. Heterotopic production of ceruloplasmin by lung adenocarcinoma is significantly correlated with prognosis. Lung Cancer 2018; 118:97-104. [DOI: 10.1016/j.lungcan.2018.01.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 12/22/2017] [Accepted: 01/17/2018] [Indexed: 12/21/2022]
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15
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Bonaccorsi di Patti MC, Cutone A, Polticelli F, Rosa L, Lepanto MS, Valenti P, Musci G. The ferroportin-ceruloplasmin system and the mammalian iron homeostasis machine: regulatory pathways and the role of lactoferrin. Biometals 2018; 31:399-414. [PMID: 29453656 DOI: 10.1007/s10534-018-0087-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 02/14/2018] [Indexed: 02/08/2023]
Abstract
In the last 20 years, several new genes and proteins involved in iron metabolism in eukaryotes, particularly related to pathological states both in animal models and in humans have been identified, and we are now starting to unveil at the molecular level the mechanisms of iron absorption, the regulation of iron transport and the homeostatic balancing processes. In this review, we will briefly outline the general scheme of iron metabolism in humans and then focus our attention on the cellular iron export system formed by the permease ferroportin and the ferroxidase ceruloplasmin. We will finally summarize data on the role of the iron binding protein lactoferrin on the regulation of the ferroportin/ceruloplasmin couple and of other proteins involved in iron homeostasis in inflamed human macrophages.
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Affiliation(s)
| | - Antimo Cutone
- Department of Biosciences and Territory, University of Molise, C.da Fonte Lappone, 86090, Pesche, IS, Italy
| | - Fabio Polticelli
- Department of Sciences, University Roma Tre, Rome, Italy.,National Institute of Nuclear Physics, Roma Tre Section, Rome, Italy
| | - Luigi Rosa
- Department of Public Health and Infectious Diseases, Sapienza University, Rome, Italy
| | | | - Piera Valenti
- Department of Public Health and Infectious Diseases, Sapienza University, Rome, Italy
| | - Giovanni Musci
- Department of Biosciences and Territory, University of Molise, C.da Fonte Lappone, 86090, Pesche, IS, Italy.
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16
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Luo QQ, Zhou YF, Chen MYJ, Liu L, Ma J, Zhang MW, Zhang FL, Ke Y, Qian ZM. Fasting up-regulates ferroportin 1 expression via a Ghrelin/GHSR/MAPK signaling pathway. J Cell Physiol 2017; 233:30-37. [PMID: 28338217 DOI: 10.1002/jcp.25931] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 03/22/2017] [Indexed: 01/18/2023]
Abstract
The significant positive correlation between ghrelin and iron and hepcidin levels in the plasma of children with iron deficiency anemia prompted us to hypothesize that ghrelin may affect iron metabolism. Here, we investigated the effects of fasting or ghrelin on the expression of hepcidin, ferroportin 1 (Fpn1), transferrin receptor 1 (TfR1), ferritin light chain (Ft-L) proteins, and ghrelin, and also hormone secretagogue receptor 1 alpha (GHSR1α) and ghrelin O-acyltransferase (GOAT) mRNAs in the spleen and/or macrophage. We demonstrated that fasting induces a significant increase in the expression of ghrelin, GHSR1α, GOAT, and hepcidin mRNAs, as well as Ft-L and Fpn1 but not TfR1 proteins in the spleens of mice in vivo. Similar to the effects of fasting on the spleen, ghrelin induced a significant increase in the expression of Ft-L and Fpn1 but not TfR1 proteins in macrophages in vitro. In addition, ghrelin was found to induce a significant enhancement in phosphorylation of ERK as well as translocation of pERK from the cytosol to nuclei. Furthermore, the increased pERK and Fpn1 induced by ghrelin was demonstrated to be preventable by pre-treatment with either GHSR1α antagonist or pERK inhibitor. Our findings support the hypothesis that fasting upregulates Fpn1 expression, probably via a ghrelin/GHSR/MAPK signaling pathway.
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Affiliation(s)
- Qian-Qian Luo
- Laboratory of Neuropharmacology, Fudan University School of Pharmacy, Shanghai, China.,Pharmacological Evaluation and Research Center, Shanghai Institute of PharmaceuticalIndustry, Shanghai, China.,Department of Biochemistry, Institute for Nautical Medicine, Nantong University, Nantong, China
| | - Yu-Fu Zhou
- Laboratory of Neuropharmacology, Fudan University School of Pharmacy, Shanghai, China
| | - Mesona Yung-Jin Chen
- Laboratory of Neuropharmacology, Fudan University School of Pharmacy, Shanghai, China
| | - Li Liu
- Pharmacological Evaluation and Research Center, Shanghai Institute of PharmaceuticalIndustry, Shanghai, China
| | - Juan Ma
- Laboratory of Neuropharmacology, Fudan University School of Pharmacy, Shanghai, China
| | - Meng-Wan Zhang
- Laboratory of Neuropharmacology, Fudan University School of Pharmacy, Shanghai, China
| | - Fa-Li Zhang
- Laboratory of Neuropharmacology, Fudan University School of Pharmacy, Shanghai, China
| | - Ya Ke
- Faculty of Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Zhong-Ming Qian
- Laboratory of Neuropharmacology, Fudan University School of Pharmacy, Shanghai, China
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17
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Wang Q, Ji J, Hao S, Zhang M, Li K, Qiao T. Iron Together with Lipid Downregulates Protein Levels of Ceruloplasmin in Macrophages Associated with Rapid Foam Cell Formation. J Atheroscler Thromb 2016; 23:1201-1211. [PMID: 27040361 PMCID: PMC5098920 DOI: 10.5551/jat.32292] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 01/26/2016] [Indexed: 01/31/2023] Open
Abstract
AIM Iron accumulation in foam cells was previously shown to be involved in atherogenesis. However, the mechanism for iron accumulation was not clarified. Ceruloplasmin (Cp) is an important factor in cellular iron efflux and was found to be downregulated in atherosclerotic plaques in our previous study. The current study is to investigate the role of Cp in atherosclerosis. METHODS We used RAW264.7 cells, a well-accepted cell model of atherosclerosis, which were treated with lipopolysaccharides (LPS), ferric ammonium citrate (FAC) or deferoxamine, and oxidized low density lipoprotein (ox-LDL) to detect the regulation of Cp and its influence in iron efflux and lipid accumulation using biochemical and histological assays. RESULTS Our results showed that the Cp protein level increased after 200-μM FAC treatment in LPS-activated RAW264.7 cells. Ox-LDL treatment (50 μg/ml) moderately reduced both mRNA and protein levels and ferroxidase activity of Cp (p<0.05). No significant difference was observed in the expression of ferritin and ferroportin, two important iron-related proteins for iron storage and efflux, respectively, after ox-LDL treatment. However, co-treatment with ox-LDL and FAC drastically reduced the expression of Cp. Accordingly, the ferroxidase activities simultaneously decreased, whereas the protein levels of Ft and Fpn1 significantly increased, indicating further iron accumulation. Moreover, co-treatment with FAC and ox-LDL enhanced the accumulation of cholesterol compared with ox-LDL-only treatment to trigger apoptosis. CONCLUSION Our findings suggest that physiological interaction of iron and lipid obstructs iron efflux and accelerates the lipid accumulation in macrophages during foam cell formation, which implicates the role of iron in the pathology of atherosclerosis.
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Affiliation(s)
- Qi Wang
- Department of Vascular Surgery, Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, P.R. China
| | - Jiajie Ji
- Department of Vascular Surgery, Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, P.R. China
| | - Shuangying Hao
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Meng Zhang
- Department of Vascular Surgery, Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, P.R. China
| | - Kuanyu Li
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Tong Qiao
- Department of Vascular Surgery, Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, P.R. China
- Department of Vascular Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, P.R. China
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18
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Oh CK, Park SH, Kim J, Moon Y. Non-mutagenic Suppression of Enterocyte Ferroportin 1 by Chemical Ribosomal Inactivation via p38 Mitogen-activated Protein Kinase (MAPK)-mediated Regulation: EVIDENCE FOR ENVIRONMENTAL HEMOCHROMATOSIS. J Biol Chem 2016; 291:19858-72. [PMID: 27445333 DOI: 10.1074/jbc.m116.722520] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Indexed: 01/09/2023] Open
Abstract
Iron transfer across the basolateral membrane of an enterocyte into the circulation is the rate-limiting step in iron absorption and is regulated by various pathophysiological factors. Ferroportin (FPN), the only known mammalian iron exporter, transports iron from the basolateral surface of enterocytes, macrophages, and hepatocytes into the blood. Patients with genetic mutations in FPN or repeated blood transfusion develop hemochromatosis. In this study, non-mutagenic ribosomal inactivation was assessed as an etiological factor of FPN-associated hemochromatosis in enterocytes. Non-mutagenic chemical ribosomal inactivation disrupted iron homeostasis by regulating expression of the iron exporter FPN-1, leading to intracellular accumulation in enterocytes. Mechanistically, a xenobiotic insult stimulated the intracellular sentinel p38 MAPK signaling pathway, which was positively involved in FPN-1 suppression by ribosomal dysfunction. Moreover, ribosomal inactivation-induced iron accumulation in Caenorhabditis elegans as a simplified in vivo model for gut nutrition uptake was dependent on SEK-1, a p38 kinase activator, leading to suppression of FPN-1.1 expression and iron accumulation. In terms of gene regulation, ribosomal stress-activated p38 signaling down-regulated NRF2 and NF-κB, both of which were positive transcriptional regulators of FPN-1 transcription. This study provides molecular evidence for the modulation of iron bioavailability by ribosomal dysfunction as a potent etiological factor of non-mutagenic environmental hemochromatosis in the gut-to-blood axis.
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Affiliation(s)
- Chang-Kyu Oh
- From the Laboratory of Mucosal Exposome and Biomodulation, Department of Biomedical Sciences, Pusan National University School of Medicine, Yangsan 50612, South Korea and
| | - Seong-Hwan Park
- From the Laboratory of Mucosal Exposome and Biomodulation, Department of Biomedical Sciences, Pusan National University School of Medicine, Yangsan 50612, South Korea and
| | - Juil Kim
- From the Laboratory of Mucosal Exposome and Biomodulation, Department of Biomedical Sciences, Pusan National University School of Medicine, Yangsan 50612, South Korea and
| | - Yuseok Moon
- From the Laboratory of Mucosal Exposome and Biomodulation, Department of Biomedical Sciences, Pusan National University School of Medicine, Yangsan 50612, South Korea and the Medical Research Institute, Pusan National University, Busan 46241, South Korea
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Freestone D, Denoyer D, Jakab M, Leigh Ackland M, Cater MA, Michalczyk A. Ceruloplasmin is regulated by copper and lactational hormones in PMC42-LA mammary epithelial cell culture models. Metallomics 2016; 8:941-50. [PMID: 27426449 DOI: 10.1039/c6mt00086j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ceruloplasmin (Cp) is a multicopper ferroxidase that is considered to be an important source of copper in milk for normal neonatal development. We investigated the expression, subcellular localization and secretion of Cp in PMC42-LA cell culture models representative of resting, lactating and suckled human mammary epithelia. Both secreted Cp (sCp) and plasma membrane associated glycosylphosphatidylinositol-linked Cp (GPI-Cp) were expressed in PMC42-LA cells. In all three epithelial models (resting, lactating and suckled), the expression and secretion of copper-bound, ferroxidase active, Cp (holo-Cp) was dependent on media copper concentration. In low copper (bathocuproinedisulphonic acid/d-penicillamine treated models) there was greater than a 2-fold decrease in holo-Cp expression and secretion, which was mirrored by a 2-fold increase in the expression and secretion of copper-free Cp protein (apo-Cp). Cell surface biotinylation studies revealed that the state of PMC42-LA cell differentiation (functionality), and the level of extracellular copper, had no significant effect on the level of plasma membrane bound GPI-Cp. Quantitative real time PCR analyses determined that there was no significant (P > 0.05) difference in Cp mRNA levels across all copper conditions investigated (0, 5, 50 μM). However, there was a significant (P < 0.05) increase (∼2-fold) in Cp mRNA in both the lactating and suckled models in comparison to the resting model. Furthermore, the Cp mRNA increase in response to PMC42-LA differentiation corresponded with more secreted Cp protein, both apo and holo forms, indicating a link between function and Cp requirement. Our results provide significant insight on the regulation of Cp expression and secretion in lactation and copper incorporation into milk.
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Affiliation(s)
- David Freestone
- Centre for Cellular and Molecular Biology, School of Life and Environmental Sciences, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia.
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McCarthy RC, Kosman DJ. Mechanisms and regulation of iron trafficking across the capillary endothelial cells of the blood-brain barrier. Front Mol Neurosci 2015; 8:31. [PMID: 26236187 PMCID: PMC4500905 DOI: 10.3389/fnmol.2015.00031] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 06/29/2015] [Indexed: 02/06/2023] Open
Abstract
The transcellular trafficking of iron from the blood into the brain interstitium depends on iron uptake proteins in the apical membrane of brain microvascular capillary endothelial cells and efflux proteins at the basolateral, abluminal membrane. In this review, we discuss the three mechanisms by which these cells take-up iron from the blood and the sole mechanism by which they efflux this iron into the abluminal space. We then focus on the regulation of this efflux pathway by exocrine factors that are released from neighboring astrocytes. Also discussed are the cytokines secreted by capillary cells that regulate the expression of these glial cell signals. Among the interstitial factors that regulate iron efflux into the brain is the Amyloid precursor protein (APP). The role of this amyliodogenic species in brain iron metabolism is discussed. Last, we speculate on the potential relationship between iron transport at the blood-brain barrier and neurological disorders associated with iron mismanagement.
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Affiliation(s)
- Ryan C McCarthy
- Department of Biochemistry, School of Medicine and Biomedical Sciences, University at Buffalo Buffalo, NY, USA
| | - Daniel J Kosman
- Department of Biochemistry, School of Medicine and Biomedical Sciences, University at Buffalo Buffalo, NY, USA
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McCarthy RC, Kosman DJ. Activation of C6 glioblastoma cell ceruloplasmin expression by neighboring human brain endothelia-derived interleukins in an in vitro blood-brain barrier model system. Cell Commun Signal 2014; 12:65. [PMID: 25311416 PMCID: PMC4200123 DOI: 10.1186/s12964-014-0065-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 09/30/2014] [Indexed: 12/30/2022] Open
Abstract
Background Iron transport across the blood–brain barrier (BBB) involves the cooperation of brain microvascular endothelial cells (BMVEC) and their neighboring astrocytes. Astrocytes secrete a soluble form of ceruloplasmin (sCp) which, in turn, acts to export iron from ferroportin (Fpn) on the basolateral surface of BMVEC. Although regulation of astrocyte sCp gene expression has been demonstrated to be influenced by interleukin-1 beta (IL-1β) and interleukin-6 (IL-6), the role of neighboring BMVEC in this regulation has yet to be determined and is the basis for this work. Results We provide evidence that human BMVEC (hBMVEC) IL-1β and IL-6 positively influence the expression of sCp transcript by neighboring C6 glioma cells (astrocytes). The effect of hBMVEC on C6 glioma sCp expression at the level of transcript and protein was repressed via the addition of IL-1β and IL-6 pathway inhibitors (IL-1 receptor antagonist protein and SC144, respectively). Stimulation of hBMVEC interleukin gene expression by apical exposure to bacterial endotoxin lipopolysaccharide significantly enhanced hBMVEC-mediated C6 glioma sCp gene expression. Conclusion hBMVEC influence the gene expression of neighboring C6 glioma sCp. This change in gene expression is mediated by the secretion of IL-1β and IL-6 from hBMVEC. Furthermore, the hBMVEC-induced increase in neighboring C6 glioma sCp gene expression leads to an increased rate of hBMVEC iron efflux. Taken together, our results indicate that hBMVEC-secreted cytokine activity increases the gene expression of neighboring C6 glioma sCp, which reciprocally acts on basolateral hBMVEC Fpn to enhance brain iron import. Electronic supplementary material The online version of this article (doi:10.1186/s12964-014-0065-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ryan C McCarthy
- Department of Biochemistry, University at Buffalo, School of Medicine and Biomedical Sciences Buffalo, Farber Hall Room 140, 3435 Main St., Building 26, Buffalo, NY, 14214-3000, USA.
| | - Daniel J Kosman
- Department of Biochemistry, University at Buffalo, School of Medicine and Biomedical Sciences Buffalo, Farber Hall Room 140, 3435 Main St., Building 26, Buffalo, NY, 14214-3000, USA.
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Musci G, Polticelli F, Bonaccorsi di Patti MC. Ceruloplasmin-ferroportin system of iron traffic in vertebrates. World J Biol Chem 2014; 5:204-215. [PMID: 24921009 PMCID: PMC4050113 DOI: 10.4331/wjbc.v5.i2.204] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 02/19/2014] [Indexed: 02/05/2023] Open
Abstract
Safe trafficking of iron across the cell membrane is a delicate process that requires specific protein carriers. While many proteins involved in iron uptake by cells are known, only one cellular iron export protein has been identified in mammals: ferroportin (SLC40A1). Ceruloplasmin is a multicopper enzyme endowed with ferroxidase activity that is found as a soluble isoform in plasma or as a membrane-associated isoform in specific cell types. According to the currently accepted view, ferrous iron transported out of the cell by ferroportin would be safely oxidized by ceruloplasmin to facilitate loading on transferrin. Therefore, the ceruloplasmin-ferroportin system represents the main pathway for cellular iron egress and it is responsible for physiological regulation of cellular iron levels. The most recent findings regarding the structural and functional features of ceruloplasmin and ferroportin and their relationship will be described in this review.
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Cutone A, Frioni A, Berlutti F, Valenti P, Musci G, Bonaccorsi di Patti MC. Lactoferrin prevents LPS-induced decrease of the iron exporter ferroportin in human monocytes/macrophages. Biometals 2014; 27:807-13. [DOI: 10.1007/s10534-014-9742-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 04/18/2014] [Indexed: 01/01/2023]
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Zhao R, Zhou H, Su SB. A critical role for interleukin-1β in the progression of autoimmune diseases. Int Immunopharmacol 2013; 17:658-69. [DOI: 10.1016/j.intimp.2013.08.012] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 08/19/2013] [Accepted: 08/19/2013] [Indexed: 01/01/2023]
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Bagheri M, Rezakhani A, Nyström S, Turkina MV, Roghani M, Hammarström P, Mohseni S. Amyloid beta(1-40)-induced astrogliosis and the effect of genistein treatment in rat: a three-dimensional confocal morphometric and proteomic study. PLoS One 2013; 8:e76526. [PMID: 24130779 PMCID: PMC3793933 DOI: 10.1371/journal.pone.0076526] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 08/30/2013] [Indexed: 01/08/2023] Open
Abstract
Astrocytes are highly involved in regulation and homeostasis of the extracellular environment in the healthy brain. In pathological conditions, these cells play a major role in the inflammatory response seen in CNS tissues, which is called reactive astrogliosis and includes hypertrophy and proliferation of astrocytes. Here, we performed 3D confocal microscopy to evaluate the morphological response of reactive astrocytes positive for glial fibrillary acidic protein (GFAP) in rats, to the presence of Aβ(1-40) in the rat brain before and after treatment with genistein. In 50 astrocytes per animal, we measured the volume and surface area for the nucleus, cell body, the entire cell, the tissue covered by single astrocytes and quantified the number and length of branches, the density of the astrocytes and the intensity of GFAP immunoreactivity. Injecting Aβ(1-40) into the brain of rats caused astrogliosis indicated by increased values for all measured parameters. Mass spectrometric analysis of hippocampal tissue in Aβ(1-40)-injected brain showed decreased amounts of tubulins, enolases and myelin basic protein, and increased amounts of dihydropyrimidinase-related protein 2. In Aβ(1-40)-injected rats pretreated with genistein, GFAP intensity was decreased to the sham-operated group level, and Aβ(1-40)-induced astrogliosis was significantly ameliorated.
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Affiliation(s)
- Maryam Bagheri
- Department of Physiology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Arjang Rezakhani
- Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
| | - Sofie Nyström
- IFM-Department of Chemistry, Linköping University, Linköping, Sweden
| | - Maria V. Turkina
- Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
| | - Mehrdad Roghani
- Department of Physiology, Neurophysiology Research Group, Shahed University, Tehran, Iran
| | - Per Hammarström
- IFM-Department of Chemistry, Linköping University, Linköping, Sweden
| | - Simin Mohseni
- Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, Linköping, Sweden
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Lokamani I, Looi ML, Md Ali SA, Mohd Dali AZH, Ahmad Annuar MA, Jamal R. Gelsolin and ceruloplasmin as potential predictive biomarkers for cervical cancer by 2D-DIGE proteomics analysis. Pathol Oncol Res 2013; 20:119-29. [PMID: 23925487 DOI: 10.1007/s12253-013-9670-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 06/26/2013] [Indexed: 12/18/2022]
Abstract
This study aimed to identify candidate proteins which may serve as potential biological markers for cervical cancer using 2D-DIGE. Serum samples of controls, patients with cervical intraepithelial neoplasia grade 3 (CIN 3), squamous cell carcinoma of early (SCC I and II) and late (SCC III and IV) stage were subjected to 2D-DIGE. Differentially expressed spots were identified by tandem mass spectrometry. Validation of candidate proteins in serum and tissue samples were then performed by ELISA and immunohistochemistry (IHC) analysis respectively. A total of 20 differentially expressed proteins were identified. These proteins were found to play key roles in the apoptosis pathway, complement system, various types of transportation such as hormones, fatty acids, lipid, vitamin E and drug transportation, coagulation cascade, regulation of iron and immunologic response. Based on their functional relevancy to the progression of various cancers, 4 proteins namely the complement factor H, CD5-like antigen, gelsolin and ceruloplasmin were chosen for further validation using ELISA. Biological network analysis showed that ceruloplasmin and gelsolin are closely interacted with the oncogene NF-κb. These two proteins were further validated using the IHC. Gelsolin and ceruloplasmin may serve as potential predictive biomarkers for the progression of high grade lesions.
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Affiliation(s)
- Ilambarthi Lokamani
- UKM Medical Molecular Biology Institute (UMBI), Universiti Kebangsaan Malaysia, Level 7, Clinical Block, UKM Medical Centre, Jalan Yaacob Latiff, Bandar Tun Razak, 56000, Cheras, Kuala Lumpur, Malaysia
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27
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Multi-copper oxidases and human iron metabolism. Nutrients 2013; 5:2289-313. [PMID: 23807651 PMCID: PMC3738974 DOI: 10.3390/nu5072289] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 05/29/2013] [Accepted: 06/06/2013] [Indexed: 01/13/2023] Open
Abstract
Multi-copper oxidases (MCOs) are a small group of enzymes that oxidize their substrate with the concomitant reduction of dioxygen to two water molecules. Generally, multi-copper oxidases are promiscuous with regards to their reducing substrates and are capable of performing various functions in different species. To date, three multi-copper oxidases have been detected in humans—ceruloplasmin, hephaestin and zyklopen. Each of these enzymes has a high specificity towards iron with the resulting ferroxidase activity being associated with ferroportin, the only known iron exporter protein in humans. Ferroportin exports iron as Fe2+, but transferrin, the major iron transporter protein of blood, can bind only Fe3+ effectively. Iron oxidation in enterocytes is mediated mainly by hephaestin thus allowing dietary iron to enter the bloodstream. Zyklopen is involved in iron efflux from placental trophoblasts during iron transfer from mother to fetus. Release of iron from the liver relies on ferroportin and the ferroxidase activity of ceruloplasmin which is found in blood in a soluble form. Ceruloplasmin, hephaestin and zyklopen show distinctive expression patterns and have unique mechanisms for regulating their expression. These features of human multi-copper ferroxidases can serve as a basis for the precise control of iron efflux in different tissues. In this manuscript, we review the biochemical and biological properties of the three human MCOs and discuss their potential roles in human iron homeostasis.
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Kim N, Sun HY, Youn MY, Yoo JY. IL-1β-specific recruitment of GCN5 histone acetyltransferase induces the release of PAF1 from chromatin for the de-repression of inflammatory response genes. Nucleic Acids Res 2013; 41:4495-506. [PMID: 23502002 PMCID: PMC3632138 DOI: 10.1093/nar/gkt156] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
To determine the functional specificity of inflammation, it is critical to orchestrate the timely activation and repression of inflammatory responses. Here, we explored the PAF1 (RNA polymerase II associated factor)-mediated signal- and locus-specific repression of genes induced through the pro-inflammatory cytokine interleukin (IL)-1β. Using microarray analysis, we identified the PAF1 target genes whose expression was further enhanced by PAF1 knockdown in IL-1β–stimulated HepG2 hepatocarcinomas. PAF1 bound near the transcription start sites of target genes and dissociated on stimulation. In PAF1-deficient cells, more elongating RNA polymerase II and acetylated histones were observed, although IL-1β–mediated activation and recruitment of nuclear factor κB (NF-κB) were not altered. Under basal conditions, PAF1 blocked histone acetyltransferase general control non-depressible 5 (GCN5)-mediated acetylation on H3K9 and H4K5 residues. On IL-1β stimulation, activated GCN5 discharged PAF1 from chromatin, allowing productive transcription to occur. PAF1 bound to histones but not to acetylated histones, and the chromatin-binding domain of PAF1 was essential for target gene repression. Moreover, IL-1β–induced cell migration was similarly controlled through counteraction between PAF1 and GCN5. These results suggest that the IL-1β signal-specific exchange of PAF1 and GCN5 on the target locus limits inappropriate gene induction and facilitates the timely activation of inflammatory responses.
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Affiliation(s)
- Nari Kim
- Division of Molecular and Life Sciences, Department of Life Sciences, Pohang University of Science and Technology POSTECH, Pohang 790-784, Republic of Korea
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Hennessy MD, Zak RS, Gay CL, Pullinger CR, Lee KA, Aouizerat BE. Polymorphisms of interleukin-1 Beta and interleukin-17Alpha genes are associated with restless legs syndrome. Biol Res Nurs 2013; 16:143-51. [PMID: 23460603 DOI: 10.1177/1099800413478827] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVE Dopamine, iron, and inflammatory pathways are considered important to the development of restless legs syndrome (RLS). Recent genetic studies support involvement of dopamine and iron; however, cytokine gene variation in the inflammatory component remains unexplored. A recent study reported a high prevalence of RLS among HIV-infected adults. We estimate occurrence of RLS in an ethnically diverse sample of HIV-infected adults and examine differences in demographic factors, clinical characteristics, and biomarkers relating to dopamine, iron, and inflammation between adults with and without RLS symptoms. DESIGN A prospective longitudinal study aimed at identifying biomarkers of RLS symptom experience among HIV-infected adults. METHOD 316 HIV-positive adults were evaluated using International RLS Study Group criteria. Genes were chosen for hypothesized relationships to dopamine (NOS1, NOS2), iron (HFE) or inflammation-mediated by cytokine genes (interferon [IFN], interleukin [IL], nuclear factor kappa-B [NFKB], and tumor necrosis factor alpha [TNFA]). RESULTS Similar to general population estimates, 11% of the sample met all four RLS diagnostic criteria. Controlling for race, gender, and hemoglobin, carrying two copies of the minor allele for IL1B rs1143643, rs1143634, or rs1143633 or carrying the minor allele for IL17A rs8193036 was associated with increased likelihood of meeting RLS diagnostic criteria. CONCLUSION This study provides preliminary evidence of a genetic association between IL1B and IL17A genes and RLS.
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Affiliation(s)
- Mary Dawn Hennessy
- 1Department of Women, Children, and Family Health Sciences, University of Illinois, Chicago, IL, USA
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Wang J, Xiao X, Zhang Y, Shi D, Chen W, Fu L, Liu L, Xie F, Kang T, Huang W, Deng W. Simultaneous modulation of COX-2, p300, Akt, and Apaf-1 signaling by melatonin to inhibit proliferation and induce apoptosis in breast cancer cells. J Pineal Res 2012; 53:77-90. [PMID: 22335196 DOI: 10.1111/j.1600-079x.2012.00973.x] [Citation(s) in RCA: 138] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Melatonin exhibits anti-inflammatory and anticancer effects and could be a chemopreventive and chemotherapeutic agent against cancers, but the precise mechanisms involved remain largely unresolved. In this study, we evaluated the mechanism of action of melatonin in human MDA-MB-361 breast cancer cells. Melatonin at pharmacological concentrations (10(-3) m) significantly suppressed cell proliferation and induced apoptosis in a dose-dependent manner. The observed suppression of proliferation was accompanied by the melatonin-mediated inhibition of COX-2, p300, and NF-κB signaling. Melatonin significantly inhibited COX-2 expression and prostaglandin E(2) (PGE2) production, abrogated p300 histone acetyltransferase activity and p300-mediated NF-κB acetylation, thereby blocking NF-κB binding and p300 recruitment to COX-2 promoter. Pretreatment with a COX-2- or p300-selective inhibitor abrogated the melatonin-induced inhibition of cell proliferation, whereas PGE2 treatment or COX-2 transfection reversed the inhibition by melatonin. Moreover, melatonin markedly inhibited phosphorylation of PI3K, Akt, PRAS40, and GSK-3 proteins, thereby inactivating the PI3K/Akt signaling pathway. Pretreatment with a PI3K- or an Akt-selective inhibitor or an Akt-specific siRNA blocked the melatonin-mediated inhibition of cell proliferation. Conversely, gene delivery of a constitutively active Akt effectively reversed the inhibition by melatonin. Furthermore, melatonin induced Apaf-1 expression, triggered cytochrome C release, and stimulated caspase-3 and caspase-9 activities and cleavage, leading to an activation of the Apaf-1-dependent apoptotic pathway. Pretreatment with an Apaf-1-specific siRNA effectively attenuated the melatonin-induced apoptosis. These results therefore indicate that melatonin inhibits cell proliferation and induces apoptosis in MDA-MB-361 breast cancer cells in vitro by simultaneously suppressing the COX-2/PGE2, p300/NF-κB, and PI3K/Akt/signaling and activating the Apaf-1/caspase-dependent apoptotic pathway.
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Affiliation(s)
- Jingshu Wang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
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Xiao X, Shi D, Liu L, Wang J, Xie X, Kang T, Deng W. Quercetin suppresses cyclooxygenase-2 expression and angiogenesis through inactivation of P300 signaling. PLoS One 2011; 6:e22934. [PMID: 21857970 PMCID: PMC3152552 DOI: 10.1371/journal.pone.0022934] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 07/02/2011] [Indexed: 12/03/2022] Open
Abstract
Quercetin, a polyphenolic bioflavonoid, possesses multiple pharmacological actions including anti-inflammatory and antitumor properties. However, the precise action mechanisms of quercetin remain unclear. Here, we reported the regulatory actions of quercetin on cyclooxygenase-2 (COX-2), an important mediator in inflammation and tumor promotion, and revealed the underlying mechanisms. Quercetin significantly suppressed COX-2 mRNA and protein expression and prostaglandin (PG) E(2) production, as well as COX-2 promoter activation in breast cancer cells. Quercetin also significantly inhibited COX-2-mediated angiogenesis in human endothelial cells in a dose-dependent manner. The in vitro streptavidin-agarose pulldown assay and in vivo chromatin immunoprecipitation assay showed that quercetin considerably inhibited the binding of the transactivators CREB2, C-Jun, C/EBPβ and NF-κB and blocked the recruitment of the coactivator p300 to COX-2 promoter. Moreover, quercetin effectively inhibited p300 histone acetyltransferase (HAT) activity, thereby attenuating the p300-mediated acetylation of NF-κB. Treatment of cells with p300 HAT inhibitor roscovitine was as effective as quercetin at inhibiting p300 HAT activity. Addition of quercetin to roscovitine-treated cells did not change the roscovitine-induced inhibition of p300 HAT activity. Conversely, gene delivery of constitutively active p300 significantly reversed the quercetin-mediated inhibition of endogenous HAT activity. These results indicate that quercetin suppresses COX-2 expression by inhibiting the p300 signaling and blocking the binding of multiple transactivators to COX-2 promoter. Our findings therefore reveal a novel mechanism of action of quercetin and suggest a potential use for quercetin in the treatment of COX-2-mediated diseases such as breast cancers.
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Affiliation(s)
- Xiangsheng Xiao
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Dingbo Shi
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Liqun Liu
- The First Affiliated Hospital-Huangpu Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jingshu Wang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Xiaoming Xie
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Tiebang Kang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Wuguo Deng
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
- * E-mail:
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