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Pantelopulos GA, Abraham CB, Straub JE. Cholesterol and Lipid Rafts in the Biogenesis of Amyloid-β Protein and Alzheimer's Disease. Annu Rev Biophys 2024; 53:455-486. [PMID: 38382114 DOI: 10.1146/annurev-biophys-062823-023436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Cholesterol has been conjectured to be a modulator of the amyloid cascade, the mechanism that produces the amyloid-β (Aβ) peptides implicated in the onset of Alzheimer's disease. We propose that cholesterol impacts the genesis of Aβ not through direct interaction with proteins in the bilayer, but indirectly by inducing the liquid-ordered phase and accompanying liquid-liquid phase separations, which partition proteins in the amyloid cascade to different lipid domains and ultimately to different endocytotic pathways. We explore the full process of Aβ genesis in the context of liquid-ordered phases induced by cholesterol, including protein partitioning into lipid domains, mechanisms of endocytosis experienced by lipid domains and secretases, and pH-controlled activation of amyloid precursor protein secretases in specific endocytotic environments. Outstanding questions on the essential role of cholesterol in the amyloid cascade are identified for future studies.
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Affiliation(s)
| | - Conor B Abraham
- Department of Chemistry, Boston University, Boston, Massachusetts, USA;
| | - John E Straub
- Department of Chemistry, Boston University, Boston, Massachusetts, USA;
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2
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Shi Y, Ruan H, Xu Y, Zou C. Cholesterol, Eukaryotic Lipid Domains, and an Evolutionary Perspective of Transmembrane Signaling. Cold Spring Harb Perspect Biol 2023; 15:a041418. [PMID: 37604587 PMCID: PMC10626259 DOI: 10.1101/cshperspect.a041418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Transmembrane signaling is essential for complex life forms. Communication across a bilayer lipid barrier is elaborately organized to convey precision and to fine-tune strength. Looking back, the steps that it has taken to enable this seemingly mundane errand are breathtaking, and with our survivorship bias, Darwinian. While this review is to discuss eukaryotic membranes in biological functions for coherence and theoretical footing, we are obliged to follow the evolution of the biological membrane through time. Such a visit is necessary for our hypothesis that constraints posited on cellular functions are mainly via the biomembrane, and relaxation thereof in favor of a coordinating membrane environment is the molecular basis for the development of highly specialized cellular activities, among them transmembrane signaling. We discuss the obligatory paths that have led to eukaryotic membrane formation, its intrinsic ability to signal, and how it set up the platform for later integration of protein-based receptor activation.
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Affiliation(s)
- Yan Shi
- Department of Basic Medical Sciences, Tsinghua-Peking University Joint Center for Life Sciences, School of Medicine; Institute for Immunology, Tsinghua University, Beijing 100084, China
- Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute, University of Calgary, Calgary, Alberta T2N 4Z6, Canada
| | - Hefei Ruan
- Department of Basic Medical Sciences, Tsinghua-Peking University Joint Center for Life Sciences, School of Medicine; Institute for Immunology, Tsinghua University, Beijing 100084, China
- Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Yanni Xu
- Department of Basic Medical Sciences, Tsinghua-Peking University Joint Center for Life Sciences, School of Medicine; Institute for Immunology, Tsinghua University, Beijing 100084, China
| | - Chunlin Zou
- Department of Basic Medical Sciences, Tsinghua-Peking University Joint Center for Life Sciences, School of Medicine; Institute for Immunology, Tsinghua University, Beijing 100084, China
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Yan M, Wang J, Wang H, Zhou J, Qi H, Naji Y, Zhao L, Tang Y, Dai Y. Knockdown of NR3C1 inhibits the proliferation and migration of clear cell renal cell carcinoma through activating endoplasmic reticulum stress-mitophagy. J Transl Med 2023; 21:701. [PMID: 37807060 PMCID: PMC10560440 DOI: 10.1186/s12967-023-04560-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 09/22/2023] [Indexed: 10/10/2023] Open
Abstract
BACKGROUND Clear cell renal cell carcinoma (ccRCC) is closely associated with steroid hormones and their receptors affected by lipid metabolism. Recently, there has been growing interest in the carcinogenic role of NR3C1, the sole gene responsible for encoding glucocorticoid receptor. However, the specific role of NR3C1 in ccRCC remains unclear. The present study was thus developed to explore the underlying mechanism of NR3C1's carcinogenic effects in ccRCC. METHODS Expression of NR3C1 was verified by various tumor databases and assessed using RT-qPCR and western blot. Stable transfected cell lines of ccRCC with NR3C1 knockdown were constructed, and a range of in vitro and in vivo experiments were performed to examine the effects of NR3C1 on ccRCC proliferation and migration. Transcriptomics and lipidomics sequencing were then conducted on ACHN cells, which were divided into control and sh-NR3C1 group. Finally, the sequencing results were validated using transmission electron microscopy, mitochondrial membrane potential assay, immunofluorescence co-localization, cell immunofluorescent staining, and Western blot. The rescue experiments were designed to investigate the relationship between endoplasmic reticulum stress (ER stress) and mitophagy in ccRCC cells after NR3C1 knockdown, as well as the regulation of their intrinsic signaling pathways. RESULTS The expression of NR3C1 in ccRCC cells and tissues was significantly elevated. The sh-NR3C1 group, which had lower levels of NR3C1, exhibited a lower proliferation and migration capacity of ccRCC than that of the control group (P < 0.05). Then, lipidomic and transcriptomic sequencing showed that lipid metabolism disorders, ER stress, and mitophagy genes were enriched in the sh-NR3C1 group. Finally, compared to the control group, ER stress and mitophagy were observed in the sh-NR3C1 group, while the expression of ATF6, CHOP, PINK1, and BNIP3 was also up-regulated (P < 0.05). Furthermore, Ceapin-A7, an inhibitor of ATF6, significantly down-regulated the expression of PINK1 and BNIP3 (P < 0.05), and significantly increased the proliferation and migration of ccRCC cells (P < 0.05). CONCLUSIONS This study confirms that knockdown of NR3C1 activates ER stress and induces mitophagy through the ATF6-PINK1/BNIP3 pathway, resulting in reduced proliferation and migration of ccRCC. These findings indicate potential novel targets for clinical treatment of ccRCC.
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Affiliation(s)
- Minbo Yan
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Jinhua Wang
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Haojie Wang
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Jun Zhou
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Hao Qi
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Yaser Naji
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Liangyu Zhao
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China.
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, Guangdong, China.
| | - Yuxin Tang
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China.
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, Guangdong, China.
| | - Yingbo Dai
- Department of Urology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China.
- Guangdong Provincial Key Laboratory of Biomedical Imaging, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, Guangdong, China.
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Abraham CB, Xu L, Pantelopulos GA, Straub JE. Characterizing the transmembrane domains of ADAM10 and BACE1 and the impact of membrane composition. Biophys J 2023; 122:3999-4010. [PMID: 37658602 PMCID: PMC10560698 DOI: 10.1016/j.bpj.2023.08.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 07/14/2023] [Accepted: 08/29/2023] [Indexed: 09/03/2023] Open
Abstract
The β-secretase, BACE1, and the α-secretase, ADAM10, are known to competitively cleave amyloid precursor protein (APP) in the amyloid cascades of Alzheimer's disease. Cleavage of APP by BACE1 produces a 99-residue C-terminal peptide (APP-C99) that is subsequently cleaved by γ-secretase to form amyloid-β (Aβ) protein, whereas cleavage of APP by ADAM10 is nonamyloidogenic. It has been speculated that ADAM10/APP and BACE1/APP interactions are regulated by colocalization within and outside of liquid-ordered membrane domains; however, the mechanism of this regulation and the character of the proteins' transmembrane domains are not well understood. In this work, we have developed and characterized minimal congener sequences for the transmembrane domains of ADAM10 and BACE1 using a multiscale modeling approach combining both temperature replica exchange and conventional molecular dynamics simulations based on the coarse-grained Martini2.2 and all-atom CHARMM36 force fields. Our results show that membrane composition impacts the character of the transmembrane domains of BACE1 and ADAM10, adding credence to the speculation that membrane domains are involved in the etiology of Alzheimer's disease.
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Affiliation(s)
- Conor B Abraham
- Department of Chemistry, Boston University, Boston, Massachusetts
| | - Lin Xu
- Department of Chemistry, Boston University, Boston, Massachusetts
| | - George A Pantelopulos
- Department of Chemistry, Boston University, Boston, Massachusetts; Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - John E Straub
- Department of Chemistry, Boston University, Boston, Massachusetts.
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Saini P, Anugula S, Fong YW. The Role of ATP-Binding Cassette Proteins in Stem Cell Pluripotency. Biomedicines 2023; 11:1868. [PMID: 37509507 PMCID: PMC10377311 DOI: 10.3390/biomedicines11071868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/20/2023] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
Pluripotent stem cells (PSCs) are highly proliferative cells that can self-renew indefinitely in vitro. Upon receiving appropriate signals, PSCs undergo differentiation and can generate every cell type in the body. These unique properties of PSCs require specific gene expression patterns that define stem cell identity and dynamic regulation of intracellular metabolism to support cell growth and cell fate transitions. PSCs are prone to DNA damage due to elevated replicative and transcriptional stress. Therefore, mechanisms to prevent deleterious mutations in PSCs that compromise stem cell function or increase the risk of tumor formation from becoming amplified and propagated to progenitor cells are essential for embryonic development and for using PSCs including induced PSCs (iPSCs) as a cell source for regenerative medicine. In this review, we discuss the role of the ATP-binding cassette (ABC) superfamily in maintaining PSC homeostasis, and propose how their activities can influence cellular signaling and stem cell fate decisions. Finally, we highlight recent discoveries that not all ABC family members perform only canonical metabolite and peptide transport functions in PSCs; rather, they can participate in diverse cellular processes from genome surveillance to gene transcription and mRNA translation, which are likely to maintain the pristine state of PSCs.
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Affiliation(s)
- Prince Saini
- Brigham Regenerative Medicine Center, Brigham and Women’s Hospital, Boston, MA 02115, USA; (P.S.); (S.A.)
- Department of Medicine, Cardiovascular Medicine Division, Harvard Medical School, Boston, MA 02115, USA
- Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Sharath Anugula
- Brigham Regenerative Medicine Center, Brigham and Women’s Hospital, Boston, MA 02115, USA; (P.S.); (S.A.)
- Department of Medicine, Cardiovascular Medicine Division, Harvard Medical School, Boston, MA 02115, USA
- Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Yick W. Fong
- Brigham Regenerative Medicine Center, Brigham and Women’s Hospital, Boston, MA 02115, USA; (P.S.); (S.A.)
- Department of Medicine, Cardiovascular Medicine Division, Harvard Medical School, Boston, MA 02115, USA
- Harvard Stem Cell Institute, Cambridge, MA 02138, USA
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Yang J, Xu H, Wu W, Huang H, Zhang C, Tang W, Tang Q, Bi F. Ferroptosis signaling promotes the release of misfolded proteins via exosomes to rescue ER stress in hepatocellular carcinoma. Free Radic Biol Med 2023; 202:110-120. [PMID: 36997100 DOI: 10.1016/j.freeradbiomed.2023.03.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/11/2023] [Accepted: 03/27/2023] [Indexed: 04/01/2023]
Abstract
Dysfunction of the ubiquitin‒proteasome system can induce sustained endoplasmic reticulum stress (ERS) and subsequent cell death. However, malignant cells have evolved multiple mechanisms to evade sustained ERS. Therefore, identification of the mechanisms through which tumor cells develop resistance to ERS is important for the therapeutic exploitation of these cells for drug-resistant tumors. Herein, we found that proteasome inhibitors could induce ERS, activate ferroptosis signaling, and thereby induce the adaptive tolerance of tumor cells to ERS. Mechanistically, the activation of ferroptosis signaling was found to promote the formation and secretion of exosomes containing misfolded and unfolded proteins, which resulted in rescuing ERS and promoting tumor cell survival. The inhibition of ferroptosis signaling synergized with bortezomib, a clinically used proteasome inhibitor, to suppress the viability of hepatocellular carcinoma cells in vitro and in vivo. The present findings reveal that ERS resistance can be driven by an ERS-ferroptosis signaling-exosome pathway and have important clinical implications for intracellular signaling, ER homeostasis and drug-resistant cancer therapy.
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Affiliation(s)
- Jian Yang
- Department of Medical Oncology, Cancer Center and Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China; West China Second Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China
| | - Huanji Xu
- Department of Medical Oncology, Cancer Center and Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China
| | - Wanlong Wu
- West China Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China
| | - Huixi Huang
- Department of Medical Oncology, Cancer Center and Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China
| | - Chenliang Zhang
- Department of Medical Oncology, Cancer Center and Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China
| | - Weiping Tang
- Department of Medical Oncology, Cancer Center and Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China
| | - Qinlin Tang
- Department of Medical Oncology, Cancer Center and Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China
| | - Feng Bi
- Department of Medical Oncology, Cancer Center and Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, 610041, China.
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Lysophosphatidylserine Induces MUC5AC Production via the Feedforward Regulation of the TACE-EGFR-ERK Pathway in Airway Epithelial Cells in a Receptor-Independent Manner. Int J Mol Sci 2022; 23:ijms23073866. [PMID: 35409225 PMCID: PMC8999057 DOI: 10.3390/ijms23073866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 03/20/2022] [Accepted: 03/29/2022] [Indexed: 02/05/2023] Open
Abstract
Lysophosphatidylserine (LysoPS) is an amphipathic lysophospholipid that mediates a broad spectrum of inflammatory responses through a poorly characterized mechanism. Because LysoPS levels can rise in a variety of pathological conditions, we sought to investigate LysoPS's potential role in airway epithelial cells that actively participate in lung homeostasis. Here, we report a previously unappreciated function of LysoPS in production of a mucin component, MUC5AC, in the airway epithelial cells. LysoPS stimulated lung epithelial cells to produce MUC5AC via signaling pathways involving TACE, EGFR, and ERK. Specifically, LysoPS- dependent biphasic activation of ERK resulted in TGF-α secretion and strong EGFR phosphorylation leading to MUC5AC production. Collectively, LysoPS induces the expression of MUC5AC via a feedback loop composed of proligand synthesis and its proteolysis by TACE and following autocrine EGFR activation. To our surprise, we were not able to find a role of GPCRs and TLR2, known LyoPS receptors in LysoPS-induced MUC5AC production in airway epithelial cells, suggesting a potential receptor-independent action of LysoPS during inflammation. This study provides new insight into the potential function and mechanism of LysoPS as an emerging lipid mediator in airway inflammation.
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8
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Scramblases as Regulators of Proteolytic ADAM Function. MEMBRANES 2022; 12:membranes12020185. [PMID: 35207106 PMCID: PMC8880048 DOI: 10.3390/membranes12020185] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/25/2022] [Accepted: 02/02/2022] [Indexed: 11/16/2022]
Abstract
Proteolytic ectodomain release is a key mechanism for regulating the function of many cell surface proteins. The sheddases ADAM10 and ADAM17 are the best-characterized members of the family of transmembrane disintegrin-like metalloproteinase. Constitutive proteolytic activities are low but can be abruptly upregulated via inside-out signaling triggered by diverse activating events. Emerging evidence indicates that the plasma membrane itself must be assigned a dominant role in upregulation of sheddase function. Data are discussed that tentatively identify phospholipid scramblases as central players during these events. We propose that scramblase-dependent externalization of the negatively charged phospholipid phosphatidylserine (PS) plays an important role in the final activation step of ADAM10 and ADAM17. In this manuscript, we summarize the current knowledge on the interplay of cell membrane changes, PS exposure, and proteolytic activity of transmembrane proteases as well as the potential consequences in the context of immune response, infection, and cancer. The novel concept that scramblases regulate the action of ADAM-proteases may be extendable to other functional proteins that act at the cell surface.
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9
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Liabotis A, Ardidie-Robouant C, Mailly P, Besbes S, Gutierrez C, Atlas Y, Muller L, Germain S, Monnot C. Angiopoietin-like 4-Induced 3D Capillary Morphogenesis Correlates to Stabilization of Endothelial Adherens Junctions and Restriction of VEGF-Induced Sprouting. Biomedicines 2022; 10:biomedicines10020206. [PMID: 35203415 PMCID: PMC8869696 DOI: 10.3390/biomedicines10020206] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/13/2022] [Accepted: 01/14/2022] [Indexed: 11/22/2022] Open
Abstract
Angiopoietin-like 4 (ANGPTL4) is a target of hypoxia that accumulates in the endothelial extracellular matrix. While ANGPTL4 is known to regulate angiogenesis and vascular permeability, its context-dependent role related to vascular endothelial growth factor (VEGF) has been suggested in capillary morphogenesis. We here thus develop in vitro 3D models coupled to imaging and morphometric analysis of capillaries to decipher ANGPTL4 functions either alone or in the presence of VEGF. ANGPTL4 induces the formation of barely branched and thin endothelial capillaries that display linear adherens junctions. However, ANGPTL4 counteracts VEGF-induced formation of abundant ramified capillaries presenting cell–cell junctions characterized by VE-cadherin containing reticular plaques and serrated structures. We further deciphered the early angiogenesis steps regulated by ANGPTL4. During the initial activation of endothelial cells, ANGPTL4 alone induces cell shape changes but limits the VEGF-induced cell elongation and unjamming. In the growing sprout, ANGPTL4 maintains cohesive VE-cadherin pattern and sustains moderate 3D cell migration but restricts VEGF-induced endothelium remodeling and cell migration. This effect is mediated by differential short- and long-term regulation of P-Y1175-VEGFR2 and ERK1-2 signaling by ANGPTL4. Our in vitro 3D models thus provide the first evidence that ANGPTL4 induces a specific capillary morphogenesis but also overcomes VEGF effect.
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Affiliation(s)
- Athanasia Liabotis
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
- Collège Doctoral, Sorbonne Université, F-75006 Paris, France
| | - Corinne Ardidie-Robouant
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
| | - Philippe Mailly
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
| | - Samaher Besbes
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
| | - Charly Gutierrez
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
| | - Yoann Atlas
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
- Collège Doctoral, Sorbonne Université, F-75006 Paris, France
| | - Laurent Muller
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
| | - Stéphane Germain
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
- Correspondence: (S.G.); (C.M.)
| | - Catherine Monnot
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, F-75005 Paris, France; (A.L.); (C.A.-R.); (P.M.); (S.B.); (C.G.); (Y.A.); (L.M.)
- Correspondence: (S.G.); (C.M.)
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10
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Lee HJ, Chen Z, Collard M, Chen F, Chen JG, Wu M, Alani RM, Cheng JX. Multimodal Metabolic Imaging Reveals Pigment Reduction and Lipid Accumulation in Metastatic Melanoma. BME FRONTIERS 2021; 2021:9860123. [PMID: 37849907 PMCID: PMC10521760 DOI: 10.34133/2021/9860123] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 08/30/2021] [Indexed: 10/19/2023] Open
Abstract
Objective and Impact Statement. Molecular signatures are needed for early diagnosis and improved treatment of metastatic melanoma. By high-resolution multimodal chemical imaging of human melanoma samples, we identify a metabolic reprogramming from pigmentation to lipid droplet (LD) accumulation in metastatic melanoma. Introduction. Metabolic plasticity promotes cancer survival and metastasis, which promises to serve as a prognostic marker and/or therapeutic target. However, identifying metabolic alterations has been challenged by difficulties in mapping localized metabolites with high spatial resolution. Methods. We developed a multimodal stimulated Raman scattering and pump-probe imaging platform. By time-domain measurement and phasor analysis, our platform allows simultaneous mapping of lipids and pigments at a subcellular level. Furthermore, we identify the sources of these metabolic signatures by tracking deuterium metabolites at a subcellular level. By validation with mass spectrometry, a specific fatty acid desaturase pathway was identified. Results. We identified metabolic reprogramming from a pigment-containing phenotype in low-grade melanoma to an LD-rich phenotype in metastatic melanoma. The LDs contain high levels of cholesteryl ester and unsaturated fatty acids. Elevated fatty acid uptake, but not de novo lipogenesis, contributes to the LD-rich phenotype. Monounsaturated sapienate, mediated by FADS2, is identified as an essential fatty acid that promotes cancer migration. Blocking such metabolic signatures effectively suppresses the migration capacity both in vitro and in vivo. Conclusion. By multimodal spectroscopic imaging and lipidomic analysis, the current study reveals lipid accumulation, mediated by fatty acid uptake, as a metabolic signature that can be harnessed for early diagnosis and improved treatment of metastatic melanoma.
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Affiliation(s)
- Hyeon Jeong Lee
- Photonics Center, Department of Electrical and Computer Engineering, Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Zhicong Chen
- Photonics Center, Department of Electrical and Computer Engineering, Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Marianne Collard
- Department of Dermatology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Fukai Chen
- Photonics Center, Department of Electrical and Computer Engineering, Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Jiaji G. Chen
- Department of Dermatology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Muzhou Wu
- Department of Dermatology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Rhoda M. Alani
- Department of Dermatology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Ji-Xin Cheng
- Photonics Center, Department of Electrical and Computer Engineering, Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
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11
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Li F, Yu Y, Guo M, Lin Y, Jiang Y, Qu M, Sun X, Li Z, Zhai Y, Tan Z. Integrated analysis of physiological, transcriptomics and metabolomics provides insights into detoxication disruption of PFOA exposure in Mytilus edulis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 214:112081. [PMID: 33677383 DOI: 10.1016/j.ecoenv.2021.112081] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/15/2021] [Accepted: 02/17/2021] [Indexed: 05/14/2023]
Abstract
Perfluorooctanoic acid (PFOA), a persistent environmental contaminant, resists environmental degradation and bioaccumulates in food chains. Lots of literatures have proved that PFOA exposure could disrupt detoxifying function in a variety of organisms, however, it still remained poorly known about this in mollusk. Here, we examined physiological, transcriptomic, and metabolomic responses to PFOA in Mytilus edulis, a model organism frequently used in studies of aquatic pollution. We aimed to characterize PFOA-induced stress responses and detoxification mechanisms. PFOA exposure significantly altered antioxidant enzyme activity levels and the abundances of lipid peroxidation products. In addition, transcriptomic analysis indicated that several genes associated with oxidative stress and detoxication were differentially expressed after PFOA exposure. In combination, transcriptomic and metabolomic analyses showed that PFOA exposure disturbed several metabolic processes in M. edulis, including the lipid metabolism, amino acid metabolism, and carbohydrate metabolism etc. Molecular examination and enzymes assay of PFOA-exposed M. edulis after a 7-day depuration period still did not recover to control levels. The Pathway enrichment analysis proved that several pathways related to detoxification, such as c-Jun N-terminal kinase (JNK) and p38-dependent mitogen-activated protein kinase (MAPK) pathway, Peroxisome proliferator-activated receptor γ (PPARγ) pathway etc, were obviously affected. The present work verifies firstly PFOA disruption to molluscan detoxification and identifies the key pathways to understand the molecular mechanisms thereof. This study provides new insights into the detoxication disruption invoked in response to PFOA exposure in M. edulis.
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Affiliation(s)
- Fengling Li
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China
| | - Yongxing Yu
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China; College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China
| | - Mengmeng Guo
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China
| | - Yao Lin
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China
| | - Yanhua Jiang
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China
| | - Meng Qu
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China
| | - Xiaojie Sun
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China
| | - Zhaoxin Li
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China
| | - Yuxiu Zhai
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China
| | - Zhijun Tan
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China.
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12
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Bleibaum F, Sommer A, Veit M, Rabe B, Andrä J, Kunzelmann K, Nehls C, Correa W, Gutsmann T, Grötzinger J, Bhakdi S, Reiss K. ADAM10 sheddase activation is controlled by cell membrane asymmetry. J Mol Cell Biol 2020; 11:979-993. [PMID: 30753537 PMCID: PMC6927242 DOI: 10.1093/jmcb/mjz008] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 11/20/2018] [Accepted: 02/06/2019] [Indexed: 12/14/2022] Open
Abstract
Dysregulation of the disintegrin-metalloproteinase ADAM10 may contribute to the development of diseases including tumorigenesis and Alzheimer's disease. The mechanisms underlying ADAM10 sheddase activation are incompletely understood. Here, we show that transient exposure of the negatively charged phospholipid phosphatidylserine (PS) is necessarily required. The soluble PS headgroup was found to act as competitive inhibitor of substrate cleavage. Overexpression of the Ca2+-dependent phospholipid scramblase Anoctamin-6 (ANO6) led to increased PS externalization and substrate release. Transfection with a constitutively active form of ANO6 resulted in maximum sheddase activity in the absence of any stimulus. Calcium-dependent ADAM10 activation could not be induced in lymphocytes of patients with Scott syndrome harbouring a missense mutation in ANO6. A putative PS-binding motif was identified in the conserved stalk region. Replacement of this motif resulted in strong reduction of sheddase activity. In conjunction with the recently described 3D structure of the ADAM10 extracellular domain, a model is advanced to explain how surface-exposed PS triggers ADAM10 sheddase function.
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Affiliation(s)
| | - Anselm Sommer
- Department of Dermatology, University of Kiel, Kiel, Germany
| | - Martin Veit
- Department of Dermatology, University of Kiel, Kiel, Germany
| | - Björn Rabe
- Institute of Biochemistry, University of Kiel, Olshausenstraße 40, Kiel, Germany
| | - Jörg Andrä
- Hamburg University of Applied Science, Ulmenliet 20, Hamburg, Germany
| | - Karl Kunzelmann
- Physiological Institute, University of Regensburg, Universitätsstraße 31, Regensburg, Germany
| | - Christian Nehls
- Forschungszentrum Borstel, Leibniz-Zentrum für Medizin und Biowissenschaften, Parkallee 10, Borstel, Germany
| | - Wilmar Correa
- Forschungszentrum Borstel, Leibniz-Zentrum für Medizin und Biowissenschaften, Parkallee 10, Borstel, Germany
| | - Thomas Gutsmann
- Forschungszentrum Borstel, Leibniz-Zentrum für Medizin und Biowissenschaften, Parkallee 10, Borstel, Germany
| | - Joachim Grötzinger
- Institute of Biochemistry, University of Kiel, Olshausenstraße 40, Kiel, Germany
| | - Sucharit Bhakdi
- Department of Dermatology, University of Kiel, Kiel, Germany
| | - Karina Reiss
- Department of Dermatology, University of Kiel, Kiel, Germany
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13
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Pro-atherogenic proteoglycanase ADAMTS-1 is down-regulated by lauric acid through PI3K and JNK signaling pathways in THP-1 derived macrophages. Mol Biol Rep 2019; 46:2631-2641. [DOI: 10.1007/s11033-019-04661-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 01/29/2019] [Indexed: 01/05/2023]
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14
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Zheng H, Zhong A, Xie S, Wang Y, Sun J, Zhang J, Tong Y, Chen M, Zhang G, Ma Q, Kai J, Guo L, Lu R. Elevated serum HER-2 predicts poor prognosis in breast cancer and is correlated to ADAM10 expression. Cancer Med 2019; 8:679-685. [PMID: 30661303 PMCID: PMC6382724 DOI: 10.1002/cam4.1859] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/22/2018] [Accepted: 10/14/2018] [Indexed: 12/17/2022] Open
Abstract
Human epidermal growth factor receptor‐2 (HER‐2) overexpression in breast tumor tissues is associated with a poor prognosis but may benefit from treatment with trastuzumab. The extracellular domain (ECD) of HER‐2 can be measured in serum and which has been a new inspection item in clinical laboratory of several hospitals. However, whether serum HER‐2 ECD can be a marker of HER‐2 status in tumor tissues still confused clinicians. This study is a retrospective observation to explore the correlation between serum HER‐2 ECD shedding and tissue HER‐2 status in breast cancer patients. Meanwhile, we will further uncover the potential clinical significance of serum HER‐2 ECD detection. A total of 545 unselected breast cancer patients from Fudan University Shanghai Cancer Center were enrolled in this study. At primary diagnosis without any treatment, serum HER‐2 ECD was measured on ADVIA Centaur assay; meanwhile, tissue HER‐2 from core needle biopsy was tested through immunohistochemistry (IHC) and fluorescent in situ hybridization (FISH). We showed that serum HER‐2 ECD concentration was related to tissue HER‐2 status. Nevertheless, 36.9% of patients with tissue HER‐2 overexpression had low levels of HER‐2 ECD shedding (<15 ng/mL) in serum. Here, we demonstrated that HER‐2 ECD shedding was also associated with protein expression and alpha‐secretase activity of a disintegrin and metalloproteinase 10 (ADAM10) using tumor tissues and cell lines. Progression‐free survival (PFS) data from breast cancer patients in TNM phase II and III with tissue HER‐2 IHC 3+ were analyzed using Kaplan‐Meier plotter. The patients with serum HER‐2 ECD above 15 ng/mL had lower progression‐free survival than those with serum HER‐2 ECD <15 ng/mL. Thus, serum HER‐2 ECD could be a biomarker to identify the subgroup of poorer outcome among HER‐2 overexpression breast cancer patients. Inhibition of ADAM10 activity may have potential therapeutic benefit for this most aggressive tumor subgroup.
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Affiliation(s)
- Hui Zheng
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Ailing Zhong
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Suhong Xie
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yanchun Wang
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Jiajun Sun
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Jie Zhang
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Ying Tong
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Miaomiao Chen
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Guihong Zhang
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qian Ma
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jinyan Kai
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Lin Guo
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Renquan Lu
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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15
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Matsuzaki T, Matsumoto S, Kasai T, Yoshizawa E, Okamoto S, Yoshikawa HY, Taniguchi H, Takebe T. Defining Lineage-Specific Membrane Fluidity Signatures that Regulate Adhesion Kinetics. Stem Cell Reports 2018; 11:852-860. [PMID: 30197117 PMCID: PMC6178887 DOI: 10.1016/j.stemcr.2018.08.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/10/2018] [Accepted: 08/11/2018] [Indexed: 12/13/2022] Open
Abstract
Cellular membrane fluidity is a critical modulator of cell adhesion and migration, prompting us to define the systematic landscape of lineage-specific cellular fluidity throughout differentiation. Here, we have unveiled membrane fluidity landscapes in various lineages ranging from human pluripotency to differentiated progeny: (1) membrane rigidification precedes the exit from pluripotency, (2) membrane composition modulates activin signaling transmission, and (3) signatures are relatively germ layer specific presumably due to unique lipid compositions. By modulating variable lineage-specific fluidity, we developed a label-free “adhesion sorting (AdSort)” method with simple cultural manipulation, effectively eliminating pluripotent stem cells and purifying target population as a result of the over 1,150 of screened conditions combining compounds and matrices. These results underscore the important role of tunable membrane fluidity in influencing stem cell maintenance and differentiation that can be translated into lineage-specific cell purification strategy. Membrane rigidification precedes the exit from pluripotency Germ layer-specific membrane fluidity signature exists Identification of polyphenols as a membrane fluidity modulator Fluidity-based adhesion sorting purify differentiated progeny from pluripotency
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Affiliation(s)
- Takahisa Matsuzaki
- Institute of Research, Tokyo Medical and Dental University (TMDU), 15-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Shinya Matsumoto
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Toshiharu Kasai
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Emi Yoshizawa
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Satoshi Okamoto
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Hiroshi Y Yoshikawa
- Department of Chemistry, Saitama University, Shimo-okubo 255, Sakura-ku, Saitama 338-8570, Japan
| | - Hideki Taniguchi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan; Advanced Medical Research Center, Yokohama City University, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Takanori Takebe
- Institute of Research, Tokyo Medical and Dental University (TMDU), 15-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan; Advanced Medical Research Center, Yokohama City University, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan; Division of Gastroenterology, Hepatology & Nutrition, Developmental Biology, Center for Stem Cell and Organoid Medicine (CuSTOM), Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA; Department of Pediatrics, University of Cincinnati College of Medicine, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA.
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16
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Ma KL, Wu Y, Zhang Y, Wang GH, Hu ZB, Ruan XZ. Activation of the CXCL16/CXCR6 pathway promotes lipid deposition in fatty livers of apolipoprotein E knockout mice and HepG2 cells. Am J Transl Res 2018; 10:1802-1816. [PMID: 30018721 PMCID: PMC6038063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 05/19/2018] [Indexed: 06/08/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD), characterised by early lipid accumulation and subsequent inflammation in the liver, is becoming a worldwide challenge due to its increasing prevalence in developing and developed countries. This study aimed to investigate the role of CXC chemokine ligand 16 (CXCL16) and its receptor CXC chemokine receptor 6 (CXCR6) in NAFLD under inflammation. We used IL-1β stimulation in human hepatoblastoma cell line (HepG2) for in vitro studies and casein injection in apolipoprotein E knockout mice in vivo to induce inflammatory stress. The effects of inflammation on cholesterol accumulation were examined by histochemical staining and a quantitative intracellular cholesterol assay. The gene and protein expression of molecules involved in CXCL16/CXCR6 pathway and extracellular matrix (ECM) were examined by real-time polymerase chain reaction (PCR) and Western blotting. The fluorescence intensity of reactive oxygen species (ROS) was assessed by flow cytometry. Results showed that significantly elevated levels of serum amyloid protein A in casein-injected mice confirmed the successful induction of inflamed NAFLD model. Inflammation significantly increased lipid accumulation in livers compared with the high-fat diet group and the controls. Furthermore, inflammation increased the expression of CXCL16, CXCR6, and adisintegrin and metalloproteinase domain-containing protein 10 (ADAM10) in livers, accompanied with increased ECM expression and ROS production. These effects were further confirmed by in vitro studies. Interestingly, CXCL16 gene knockdown in HepG2 cells induced by CXCL16 siRNA resulted in decreased lipid accumulation, ECM excretion, and ROS production. These findings demonstrated that inflammation-mediated activation of CXCL16/CXCR6 is involved in the progression of NAFLD.
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Affiliation(s)
- Kun Ling Ma
- Institute of Nephrology, Zhong Da Hospital, School of Medicine, Southeast UniversityNanjing, Jiangsu Province, China
| | - Yu Wu
- Institute of Nephrology, Zhong Da Hospital, School of Medicine, Southeast UniversityNanjing, Jiangsu Province, China
| | - Yang Zhang
- Institute of Nephrology, Zhong Da Hospital, School of Medicine, Southeast UniversityNanjing, Jiangsu Province, China
| | - Gui Hua Wang
- Institute of Nephrology, Zhong Da Hospital, School of Medicine, Southeast UniversityNanjing, Jiangsu Province, China
| | - Ze Bo Hu
- Institute of Nephrology, Zhong Da Hospital, School of Medicine, Southeast UniversityNanjing, Jiangsu Province, China
| | - Xiong Zhong Ruan
- Centre for Nephrology, University College London (UCL) Medical School, Royal Free CampusUK
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17
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Angelucci C, D'Alessio A, Iacopino F, Proietti G, Di Leone A, Masetti R, Sica G. Pivotal role of human stearoyl-CoA desaturases (SCD1 and 5) in breast cancer progression: oleic acid-based effect of SCD1 on cell migration and a novel pro-cell survival role for SCD5. Oncotarget 2018; 9:24364-24380. [PMID: 29849946 PMCID: PMC5966257 DOI: 10.18632/oncotarget.25273] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 04/05/2018] [Indexed: 01/01/2023] Open
Abstract
The influence of cell membrane fluidity on cancer progression has been established in different solid tumors. We previously reported that “cancer-associated fibroblasts” (CAFs) induced epithelial-mesenchymal transition and increased cell membrane fluidity and migration in poorly (MCF-7) and highly invasive (MDA-MB-231) breast cancer cells. We also found that the membrane fluidity regulating enzyme stearoyl-CoA desaturase 1 (SCD1) was upregulated in tumor cells co-cultured with CAFs and established its essential role for both intrinsic and CAF-driven tumor cell motility. Here, we further explored the mechanisms involved in the SCD1-based modulation of breast cancer cell migration and investigated the role of the other human SCD isoform, SCD5. We showed that the addition of oleic acid, the main SCD1 product, nullified the inhibitory effects produced on MCF-7 and MDA-MB-231 cell migration by SCD1 depletion (pharmacological or siRNA-based). Conversely, SCD5 seemed not involved in the regulation of cancer cell motility. Interestingly, a clear induction of necrosis was observed as a result of the depletion of SCD5 in MCF-7 cells, where the expression of SCD5 was found to be upregulated by CAFs. The necrotic effect was rescued by a 48-h treatment of cells with oleic acid. These results provide further insights in understanding the role of SCD1 in both intrinsic and CAF-stimulated mammary tumor cell migration, unveiling the metabolic basis of this desaturase-triggered effect. Moreover, our data suggest the ability of CAFs to promote the maintenance of tumor cell survival by the induction of SCD5 levels.
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Affiliation(s)
- Cristiana Angelucci
- Istituto di Istologia e Embriologia, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Alessio D'Alessio
- Istituto di Istologia e Embriologia, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Fortunata Iacopino
- Istituto di Istologia e Embriologia, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Gabriella Proietti
- Istituto di Istologia e Embriologia, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Alba Di Leone
- Unità Operativa di Chirurgia Senologica, Università Cattolica Del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli, Roma, Italia
| | - Riccardo Masetti
- Unità Operativa di Chirurgia Senologica, Università Cattolica Del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli, Roma, Italia
| | - Gigliola Sica
- Istituto di Istologia e Embriologia, Università Cattolica del Sacro Cuore, Roma, Italia
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18
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Zhang W, Zhang J, Cheng L, Ni H, You B, Shan Y, Bao L, Wu D, Zhang T, Yue H, Chen J. A disintegrin and metalloprotease 10-containing exosomes derived from nasal polyps promote angiogenesis and vascular permeability. Mol Med Rep 2018; 17:5921-5927. [PMID: 29484441 PMCID: PMC5866038 DOI: 10.3892/mmr.2018.8634] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Accepted: 02/09/2018] [Indexed: 12/21/2022] Open
Abstract
Abnormal angiogenesis and vascular permeability is important for the formation of nasal polyps (NPs). Increasing evidence has indicated that exosomes serve a vital role in modulating angiogenesis and vascular permeability. A disintegrin and metalloprotease 10 (ADAM10), an important type of proteinase that is overexpressed in various diseases, can influence angiogenesis and vascular permeability and has been observed in healthy nasal exosomes. To the best of our knowledge, the expression levels and the function of ADAM10 in NLF‑derived exosomes from NPs has not been demonstrated previously. In order to determine the influence of exosomes derived from nasal lavage fluid (NLF) on angiogenesis and vascular permeability, 25 nasal polyp patients and 15 healthy volunteers were enrolled in the present study. NLF was collected from all of the subjects. Exosomes were isolated from NLF, visualized under transmission electron microscope and identified using western blot analysis. The effect of exosomes on human umbilical vein endothelial cells (HUVECs) was measured by tube formation and permeability assays in vitro. The expression of exosomal ADAM10 was also analyzed by western blotting. NLF‑derived exosomes from NPs influenced proliferation, tube formation and the permeability of HUVECs. ADAM10 was highly expressed in NLF‑derived exosomes from NPs when compared with healthy volunteers. Thus, NLF‑derived exosomes from NPs promoted angiogenesis and vascular permeability, which may be associated with abundant ADAM10 in NP exosomes.
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Affiliation(s)
- Wei Zhang
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Jie Zhang
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Lei Cheng
- Department of Otorhinolaryngology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Haosheng Ni
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Bo You
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Ying Shan
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Lili Bao
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Di Wu
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Ting Zhang
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Huijun Yue
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Jing Chen
- Department of Otorhinolaryngology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
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19
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Wang C, Shou Y, Pan J, Du Y, Liu C, Wang H. The relationship between cholesterol level and Alzheimer’s disease-associated APP proteolysis/Aβ metabolism. Nutr Neurosci 2018; 22:453-463. [DOI: 10.1080/1028415x.2017.1416942] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Chaoqun Wang
- School of Medicine, Hangzhou Normal University, Hangzhou, People’s Republic of China
| | - Yikai Shou
- School of Medicine, Hangzhou Normal University, Hangzhou, People’s Republic of China
| | - Jie Pan
- Department of Endocrinology and Metabolism, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, People’s Republic of China
| | - Yue Du
- School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Cuiqing Liu
- College of Basic Medicine, Zhejiang Chinese Medical University, Hangzhou, People’s Republic of China
| | - Huanhuan Wang
- School of Medicine, Hangzhou Normal University, Hangzhou, People’s Republic of China
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20
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Yasu T, Mutoh A, Wada H, Kobayashi M, Kikuchi Y, Momomura S, Ueda S. Renin-Angiotensin System Inhibitors Can Prevent Intravenous Lipid Infusion-Induced Myocardial Microvascular Dysfunction and Leukocyte Activation. Circ J 2018; 82:494-501. [DOI: 10.1253/circj.cj-17-0809] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Takanori Yasu
- Department of Cardiovascular Medicine & Nephrology, Dokkyo Medical University Nikko Medical Center
| | - Akiko Mutoh
- Department of Clinical Pharmacology & Therapeutics, University of the Ryukyus Graduate School of Medicine
| | - Hiroshi Wada
- Department of First Integrated Medicine, Saitama Medical Center, Jichi Medical University
| | - Mayumi Kobayashi
- Department of Clinical Pharmacology & Therapeutics, University of the Ryukyus Graduate School of Medicine
| | | | - Shinichi Momomura
- Department of First Integrated Medicine, Saitama Medical Center, Jichi Medical University
| | - Shinichiro Ueda
- Department of Clinical Pharmacology & Therapeutics, University of the Ryukyus Graduate School of Medicine
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21
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Reiss K, Bhakdi S. The plasma membrane: Penultimate regulator of ADAM sheddase function. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017. [PMID: 28624437 DOI: 10.1016/j.bbamcr.2017.06.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND ADAM10 and ADAM17 are the best characterized members of the ADAM (A Disintegrin and Metalloproteinase) - family of transmembrane proteases. Both are involved diverse physiological and pathophysiological processes. ADAMs are known to be regulated by posttranslational mechanisms. However, emerging evidence indicates that the plasma membrane with its unique dynamic properties may additionally play an important role in controlling sheddase function. SCOPE OF REVIEW Membrane events that could contribute to regulation of ADAM-function are summarized. MAJOR CONCLUSIONS Surface expression of peptidolytic activity should be differentiated from ADAM-sheddase function since the latter additionally requires that the protease finds its substrate in the lipid bilayer. We propose that this is achieved through horizontal and vertical reorganization of membrane nanoarchitecture coordinately occurring at the sites of sheddase activation. Reshuffling of nanodomains thereby guides traffic of enzyme and substrate to each other. For ADAM17 phosphatidylserine exposure is required to then induce its shedding function. GENERAL SIGNIFICANCE The novel concept that physicochemical properties of the lipid bilayer govern the action of ADAM-proteases may be extendable to other functional proteins that act at the cell surface. This article is part of a Special Issue entitled: Proteolysis as a Regulatory Event in Pathophysiology edited by Stefan Rose-John.
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Affiliation(s)
- Karina Reiss
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany.
| | - Sucharit Bhakdi
- Dept. of Dermatology, University of Kiel, 24105 Kiel, Germany
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22
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Kabacik S, Raj K. Ionising radiation increases permeability of endothelium through ADAM10-mediated cleavage of VE-cadherin. Oncotarget 2017; 8:82049-82063. [PMID: 29137243 PMCID: PMC5669869 DOI: 10.18632/oncotarget.18282] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 05/03/2017] [Indexed: 01/08/2023] Open
Abstract
The association between ionising radiation (IR) exposure and risk of cardiovascular diseases (CVD) is well documented, but the underlying mechanism is still poorly understood. As atherosclerotic plaques are the most common cause of CVD, we investigated the effects of IR on one of the critical parameters for atherosclerotic plaque formation – endothelium permeability to macromolecules. We used endothelial cells from human coronary artery as a model of the endothelial layer. Our results show that exposure of this endothelial layer to IR increased its permeability to macromolecules of various sizes in a dose-dependent manner. Immunofluorescence analysis revealed disruption of cell junctions caused by decreased amounts of two junction proteins, one of which is vascular endothelial cadherin (VE-cadherin). The reduction in the level of this protein was not due to diminished transcription but to protein processing instead. We observed a radiation dose-dependent increase in the cleavage of VE-cadherin by ADAM10. This was not mediated through the canonical VEGF route but was instead accompanied by intra-cellular calcium release. Importantly, inhibition of ADAM10 activity rescued IR-induced permeability. Our observations demonstrate that exposure to IR activates ADAM10 to cleave VE-cadherin leading to augmented endothelium permeability; a feature that can lead to the development of atherosclerotic plaques and increase the risk of cardiovascular disease.
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Affiliation(s)
- Sylwia Kabacik
- Radiation Effects Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, UK
| | - Ken Raj
- Radiation Effects Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, UK
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23
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Fine Tuning Cell Migration by a Disintegrin and Metalloproteinases. Mediators Inflamm 2017; 2017:9621724. [PMID: 28260841 PMCID: PMC5316459 DOI: 10.1155/2017/9621724] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/22/2016] [Indexed: 02/07/2023] Open
Abstract
Cell migration is an instrumental process involved in organ development, tissue homeostasis, and various physiological processes and also in numerous pathologies. Both basic cell migration and migration towards chemotactic stimulus consist of changes in cell polarity and cytoskeletal rearrangement, cell detachment from, invasion through, and reattachment to their neighboring cells, and numerous interactions with the extracellular matrix. The different steps of immune cell, tissue cell, or cancer cell migration are tightly coordinated in time and place by growth factors, cytokines/chemokines, adhesion molecules, and receptors for these ligands. This review describes how a disintegrin and metalloproteinases interfere with several steps of cell migration, either by proteolytic cleavage of such molecules or by functions independent of proteolytic activity.
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24
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Ogłuszka M, Szostak A, Te Pas MFW, Poławska E, Urbański P, Blicharski T, Pareek CS, Juszczuk-Kubiak E, Dunkelberger JR, Horbańczuk JO, Pierzchała M. A porcine gluteus medius muscle genome-wide transcriptome analysis: dietary effects of omega-6 and omega-3 fatty acids on biological mechanisms. GENES AND NUTRITION 2017; 12:4. [PMID: 28163789 PMCID: PMC5282897 DOI: 10.1186/s12263-017-0552-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 01/09/2017] [Indexed: 01/27/2023]
Abstract
Background The level of omega-6 and omega-3 polyunsaturated fatty acids can affect many cellular systems and function via nuclear receptors or the bioactive lipid regulation of gene expression. The objective of this study was to investigate changes in the muscle transcriptome and the biological functions regulated by increased consumption of omega-3 and omega-6 fatty acids in the pig gluteus medius muscle. Results The transcriptome of the gluteus medius muscle was studied for pigs subjected to either a control diet or a diet supplemented with linseed and rapeseed oil to increase polyunsaturated fatty acid content. Next-generation sequencing (NGS) was used to generate the muscle tissue transcriptome database pointing differentially expressed genes (DEG). Comparative expression analyses identified 749 genes significantly differing at least in the twofold of change between two groups of animals fed with divergent level of omega-3 and omega-6 fatty acids. The expression of 219 genes was upregulated, and the expression of 530 genes was downregulated in the group of pigs supplemented with omega-3 and omega-6 fatty acids in relation to control group pigs. Results of RNA-seq indicated a role of fatty acid in the regulation of the expression of genes which are essential for muscle tissue development and functioning. Functional analysis revealed that the identified genes were important for a number of biological processes including inflammatory response, signaling, lipid metabolism, and homeostasis. Conclusions Summarizing, obtained results provide strong evidence that omega-6 and omega-3 fatty acids regulate fundamental metabolic processes in muscle tissue development and functioning. Electronic supplementary material The online version of this article (doi:10.1186/s12263-017-0552-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Magdalena Ogłuszka
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Agnieszka Szostak
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Marinus F W Te Pas
- Breeding and Genomic Centre, Wageningen UR Livestock Research, 6700 AH Wageningen, The Netherlands
| | - Ewa Poławska
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Paweł Urbański
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Tadeusz Blicharski
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Chandra S Pareek
- Division of Functional Genomics in Biological and Biomedical Research, Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Edyta Juszczuk-Kubiak
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Jenelle R Dunkelberger
- Department of Animal Science, Iowa State University, 2255 Kildee Hall, Ames, IA 50011 USA
| | - Jarosław O Horbańczuk
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
| | - Mariusz Pierzchała
- Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, Postępu 36A, 05-552 Jastrzębiec, Poland
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25
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Mohanty T, Alberius P, Schmidtchen A, Reiss K, Schröder J, Sørensen O. Saliva induces expression of antimicrobial peptides and promotes intracellular killing of bacteria in keratinocytes by epidermal growth factor receptor transactivation. Br J Dermatol 2017; 176:403-412. [DOI: 10.1111/bjd.14883] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2016] [Indexed: 01/09/2023]
Affiliation(s)
- T. Mohanty
- Division of Infection Medicine Department of Clinical Sciences Lund Lund University Tornavägen 10 SE‐221 84 Lund Sweden
| | - P. Alberius
- Department of Plastic Surgery Skåne University Hospital Malmö Sweden
| | - A. Schmidtchen
- Division of Dermatology Department of Clinical Sciences Lund Lund University Tornavägen 10 SE‐221 84 Lund Sweden
| | - K. Reiss
- Department of Dermatology University of Kiel Kiel Germany
| | - J.‐M. Schröder
- Department of Dermatology University of Kiel Kiel Germany
| | - O.E. Sørensen
- Division of Infection Medicine Department of Clinical Sciences Lund Lund University Tornavägen 10 SE‐221 84 Lund Sweden
- Wound Healing Center Copenhagen University Hospital Bispebjerg Hospital Copenhagen Denmark
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26
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Cheng F, Twardowski L, Fehr S, Aner C, Schaeffeler E, Joos T, Knorpp T, Dorweiler B, Laufer S, Schwab M, Torzewski M. Selective p38α MAP kinase/MAPK14 inhibition in enzymatically modified LDL‐stimulated human monocytes: implications for atherosclerosis. FASEB J 2016; 31:674-686. [DOI: 10.1096/fj.201600669r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 10/24/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Fei Cheng
- Department of Laboratory MedicineRobert‐Bosch‐HospitalStuttgartGermany
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
| | - Laura Twardowski
- Department of Laboratory MedicineRobert‐Bosch‐HospitalStuttgartGermany
| | - Sarah Fehr
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
| | - Christoph Aner
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
| | - Elke Schaeffeler
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
| | - Thomas Joos
- Natural and Medical Sciences InstituteUniversity of TübingenReutlingenGermany
| | - Thomas Knorpp
- Natural and Medical Sciences InstituteUniversity of TübingenReutlingenGermany
| | - Bernhard Dorweiler
- Division of Vascular Surgery, Department of Cardiothoracic and Vascular SurgeryUniversity Medical Center, Johannes‐Gutenberg UniversityMainzGermany
| | - Stefan Laufer
- Institute of PharmacyUniversity of TübingenTübingenGermany
| | - Matthias Schwab
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
- Institute of PharmacyUniversity of TübingenTübingenGermany
- Department of Clinical PharmacologyUniversity Hospital TübingenTübingenGermany
| | - Michael Torzewski
- Department of Laboratory MedicineRobert‐Bosch‐HospitalStuttgartGermany
- Dr. Margarete Fischer‐Bosch Institute of Clinical PharmacologyUniversity of TübingenStuttgartGermany
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27
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Stimulated release and functional activity of surface expressed metalloproteinase ADAM17 in exosomes. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:2795-2808. [DOI: 10.1016/j.bbamcr.2016.09.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 08/02/2016] [Accepted: 09/02/2016] [Indexed: 12/15/2022]
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28
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Xu J, Mukerjee S, Silva-Alves CRA, Carvalho-Galvão A, Cruz JC, Balarini CM, Braga VA, Lazartigues E, França-Silva MS. A Disintegrin and Metalloprotease 17 in the Cardiovascular and Central Nervous Systems. Front Physiol 2016; 7:469. [PMID: 27803674 PMCID: PMC5067531 DOI: 10.3389/fphys.2016.00469] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 09/30/2016] [Indexed: 01/19/2023] Open
Abstract
ADAM17 is a metalloprotease and disintegrin that lodges in the plasmatic membrane of several cell types and is able to cleave a wide variety of cell surface proteins. It is somatically expressed in mammalian organisms and its proteolytic action influences several physiological and pathological processes. This review focuses on the structure of ADAM17, its signaling in the cardiovascular system and its participation in certain disorders involving the heart, blood vessels, and neural regulation of autonomic and cardiovascular modulation.
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Affiliation(s)
- Jiaxi Xu
- Department of Pharmacology and Experimental Therapeutics and Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center New Orleans, LA, USA
| | - Snigdha Mukerjee
- Department of Pharmacology and Experimental Therapeutics and Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center New Orleans, LA, USA
| | | | | | - Josiane C Cruz
- Centro de Biotecnologia, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Camille M Balarini
- Centro de Ciências da Saúde, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Valdir A Braga
- Centro de Biotecnologia, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Eric Lazartigues
- Department of Pharmacology and Experimental Therapeutics and Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center New Orleans, LA, USA
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29
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Pigoni M, Wanngren J, Kuhn PH, Munro KM, Gunnersen JM, Takeshima H, Feederle R, Voytyuk I, De Strooper B, Levasseur MD, Hrupka BJ, Müller SA, Lichtenthaler SF. Seizure protein 6 and its homolog seizure 6-like protein are physiological substrates of BACE1 in neurons. Mol Neurodegener 2016; 11:67. [PMID: 27716410 PMCID: PMC5053352 DOI: 10.1186/s13024-016-0134-z] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 09/28/2016] [Indexed: 01/22/2023] Open
Abstract
Background The protease BACE1 (beta-site APP cleaving enzyme) is a major drug target in Alzheimer’s disease. However, BACE1 therapeutic inhibition may cause unwanted adverse effects due to its additional functions in the nervous system, such as in myelination and neuronal connectivity. Additionally, recent proteomic studies investigating BACE1 inhibition in cell lines and cultured murine neurons identified a wider range of neuronal membrane proteins as potential BACE1 substrates, including seizure protein 6 (SEZ6) and its homolog SEZ6L. Methods and results We generated antibodies against SEZ6 and SEZ6L and validated these proteins as BACE1 substrates in vitro and in vivo. Levels of the soluble, BACE1-cleaved ectodomain of both proteins (sSEZ6, sSEZ6L) were strongly reduced upon BACE1 inhibition in primary neurons and also in vivo in brains of BACE1-deficient mice. BACE1 inhibition increased neuronal surface levels of SEZ6 and SEZ6L as shown by cell surface biotinylation, demonstrating that BACE1 controls surface expression of both proteins. Moreover, mass spectrometric analysis revealed that the BACE1 cleavage site in SEZ6 is located in close proximity to the membrane, similar to the corresponding cleavage site in SEZ6L. Finally, an improved method was developed for the proteomic analysis of murine cerebrospinal fluid (CSF) and was applied to CSF from BACE-deficient mice. Hereby, SEZ6 and SEZ6L were validated as BACE1 substrates in vivo by strongly reduced levels in the CSF of BACE1-deficient mice. Conclusions This study demonstrates that SEZ6 and SEZ6L are physiological BACE1 substrates in the murine brain and suggests that sSEZ6 and sSEZ6L levels in CSF are suitable markers to monitor BACE1 inhibition in mice. Electronic supplementary material The online version of this article (doi:10.1186/s13024-016-0134-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Martina Pigoni
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Neuroproteomics, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Johanna Wanngren
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Neuroproteomics, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Peer-Hendrik Kuhn
- Neuroproteomics, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.,Institute for Advanced Study, Technische Universität München, Munich, Germany.,Institute for Pathology und Pathological Anatomy, Technische Universität München, Munich, Germany
| | - Kathryn M Munro
- Department of Anatomy and Neuroscience, University of Melbourne, Victoria, Australia
| | - Jenny M Gunnersen
- Department of Anatomy and Neuroscience, University of Melbourne, Victoria, Australia.,The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Victoria, Australia
| | - Hiroshi Takeshima
- Division of Pharmaceutical Sciences, Graduate School and Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Regina Feederle
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Institute for Diabetes and Obesity, Monoclonal Antibody Research Group, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Iryna Voytyuk
- VIB Center for the Biology of Disease, Leuven, Belgium
| | - Bart De Strooper
- VIB Center for the Biology of Disease, Leuven, Belgium.,Center for Human Genetics, and Leuven Institute for Neurodegenerative Diseases (LIND), University of Leuven (KU Leuven), Leuven, Belgium.,Institute of Neurology, University College London, London, UK
| | | | - Brian J Hrupka
- Department of Neuroscience, Janssen Pharmaceutica NV, Beerse, Belgium
| | - Stephan A Müller
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Neuroproteomics, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Stefan F Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany. .,Neuroproteomics, Klinikum rechts der Isar, Technische Universität München, Munich, Germany. .,Institute for Advanced Study, Technische Universität München, Munich, Germany. .,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany.
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30
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Global translation variations in host cells upon attack of lytic and sublytic Staphylococcus aureus α-haemolysin1. Biochem J 2015; 472:83-95. [DOI: 10.1042/bj20150284] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 09/11/2015] [Indexed: 02/07/2023]
Abstract
Staphylococcal alpha-hemolysin (AHL) is a clinically relevant toxin, whose effects on host translation are poorly understood. We characterized genome-wide alterations induced at transcriptional and transational levels by lytic and sublytic AHL, pinpointing the importance of translational control during host-pathogen interaction.
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31
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The alpha secretase ADAM10: A metalloprotease with multiple functions in the brain. Prog Neurobiol 2015; 135:1-20. [PMID: 26522965 DOI: 10.1016/j.pneurobio.2015.10.003] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/23/2015] [Accepted: 10/26/2015] [Indexed: 01/07/2023]
Abstract
Proteins belonging to the 'A Disintegrin And Metalloproteinase' (ADAM) family are membrane-anchored proteases that are able to cleave the extracellular domains of several membrane-bound proteins in a process known as 'ectodomain shedding'. In the central nervous system, ADAM10 has attracted the most attention, since it was described as the amyloid precursor protein α-secretase over ten years ago. Despite the excitement over the potential of ADAM10 as a novel drug target in Alzheimer disease, the physiological functions of ADAM10 in the brain are not yet well understood. This is largely because of the embryonic lethality of ADAM10-deficient mice, which results from the loss of cleavage and signaling of the Notch receptor, another ADAM10 substrate. However, the recent generation of conditional ADAM10-deficient mice and the identification of further ADAM10 substrates in the brain has revealed surprisingly numerous and fundamental functions of ADAM10 in the development of the embryonic brain and also in the homeostasis of adult neuronal networks. Mechanistically, ADAM10 controls these functions by utilizing unique postsynaptic substrates in the central nervous system, in particular synaptic cell adhesion molecules, such as neuroligin-1, N-cadherin, NCAM, Ephrin A2 and A5. Consequently, a dysregulation of ADAM10 activity is linked to psychiatric and neurological diseases, such as epilepsy, fragile X syndrome and Huntington disease. This review highlights the recent progress in understanding the substrates and function as well as the regulation and cell biology of ADAM10 in the central nervous system and discusses the value of ADAM10 as a drug target in brain diseases.
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32
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Twardowski L, Cheng F, Michaelsen J, Winter S, Hofmann U, Schaeffeler E, Müller S, Sonnenberg M, Steuer K, Ott G, Schwab M, Franke UFW, Torzewski M. Enzymatically Modified Low-Density Lipoprotein Is Present in All Stages of Aortic Valve Sclerosis: Implications for Pathogenesis of the Disease. J Am Heart Assoc 2015; 4:e002156. [PMID: 26475297 PMCID: PMC4845139 DOI: 10.1161/jaha.115.002156] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background We have demonstrated previously that enzymatically degraded low‐density lipoprotein (eLDL) is an essential causative component for the initiation of atherosclerosis. Here, we investigated the different stages of human aortic valve sclerosis for the presence of eLDL and effectors of the innate immune system, as well as the interaction of eLDL with isolated valvular interstitial cells/myofibroblasts to discover possible pathways leading to aortic valve sclerosis. Methods and Results Human aortic valvular tissue was obtained from 68 patients undergoing valve replacement surgery. Patients were classified into 3 groups (mild, moderate, or severe aortic valve sclerosis), and clinical data for statistical analysis were gathered from all patients. Immunohistochemical staining demonstrated extensive extracellular deposits of eLDL throughout all grades of aortic valve sclerosis. Complementary analysis of lipid composition revealed higher concentrations of the decisive components of eLDL (ie, unesterified cholesterol and linoleic acid) compared with internal control tissues. Further, the complement component C3d and terminal complement complexes colocalized with eLDL compatible with the proposal that subendothelially deposited eLDL is enzymatically transformed into a complement activator at early stages of valvular cusp lesion development. Gene expression profiles of proteases and complement components corroborated by immunohistochemistry demonstrated an upregulation of the protease cathepsin D (a possible candidate for LDL degradation to eLDL) and the complement inhibitor CD55. Surprisingly, substantial C‐reactive protein expression was not observed before grade 2 aortic valve sclerosis as investigated with microarray analysis, reverse transcription–polymerase chain reaction analysis, and immunohistochemistry. Finally, we demonstrated cellular uptake of eLDL by valvular interstitial cells/myofibroblasts. Conclusions The present study is a startup of a hypothesis on the pathogenesis of aortic valve sclerosis declaring extracellular lipoprotein modification, subsequent complement activation, and cellular uptake by valvular interstitial cells/myofibroblasts as integral players.
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Affiliation(s)
- Laura Twardowski
- Department of Laboratory Medicine, Robert-Bosch-Hospital, Stuttgart, Germany (L.T., F.C., M.T.)
| | - Fei Cheng
- Department of Laboratory Medicine, Robert-Bosch-Hospital, Stuttgart, Germany (L.T., F.C., M.T.) Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.)
| | - Jens Michaelsen
- Department of Cardiovascular Surgery, Robert-Bosch-Hospital, Stuttgart, Germany (J.M., U.W.F.)
| | - Stefan Winter
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.)
| | - Ute Hofmann
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.)
| | - Elke Schaeffeler
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.)
| | - Simon Müller
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.)
| | - Maike Sonnenberg
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.)
| | - Kristin Steuer
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.)
| | - German Ott
- Department of Pathology, Robert-Bosch-Hospital, Stuttgart, Germany (G.O.)
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.) Department of Clinical Pharmacology, University Hospital, Tuebingen, Germany (M.S.)
| | - Ulrich F W Franke
- Department of Cardiovascular Surgery, Robert-Bosch-Hospital, Stuttgart, Germany (J.M., U.W.F.)
| | - Michael Torzewski
- Department of Laboratory Medicine, Robert-Bosch-Hospital, Stuttgart, Germany (L.T., F.C., M.T.) Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany (F.C., S.W., U.H., E.S., S., M.S., K.S., M.S., M.T.)
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Düsterhöft S, Michalek M, Kordowski F, Oldefest M, Sommer A, Röseler J, Reiss K, Grötzinger J, Lorenzen I. Extracellular Juxtamembrane Segment of ADAM17 Interacts with Membranes and Is Essential for Its Shedding Activity. Biochemistry 2015; 54:5791-801. [DOI: 10.1021/acs.biochem.5b00497] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | | | - Felix Kordowski
- Department
of Dermatology and Allergology, University Hospital Schleswig-Holstein, Campus Kiel, Schittenhelmstrasse 7, 24105 Kiel, Germany
| | | | - Anselm Sommer
- Department
of Dermatology and Allergology, University Hospital Schleswig-Holstein, Campus Kiel, Schittenhelmstrasse 7, 24105 Kiel, Germany
| | | | - Karina Reiss
- Department
of Dermatology and Allergology, University Hospital Schleswig-Holstein, Campus Kiel, Schittenhelmstrasse 7, 24105 Kiel, Germany
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Zhu W, Zou B, Nie R, Zhang Y, Li CM. A-type ECG and EGCG dimers disturb the structure of 3T3-L1 cell membrane and strongly inhibit its differentiation by targeting peroxisome proliferator-activated receptor γ with miR-27 involved mechanism. J Nutr Biochem 2015; 26:1124-35. [PMID: 26145192 DOI: 10.1016/j.jnutbio.2015.05.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 04/28/2015] [Accepted: 05/07/2015] [Indexed: 12/24/2022]
Abstract
The effects of four proanthocyanidin dimers including epicatechin-(4β→8, 2β→O→7)-epicatechin (A-type EC dimer), epicatechin-(4β→8)-epicatechin (B-type EC dimer), epicatechin-3-gallate-(4β→8, 2β→O→7)-epicatechin-3-gallate (A-type ECG dimer) and epigallocatechin-3-gallate-(4β→8, 2β→O→7)-epigallocatechin-3-gallate (A-type EGCG dimer) on 3T3-L1 preadipocyte cell differentiation and the underlying mechanisms were explored and compared. The results showed that A-type ECG dimer and A-type EGCG dimer significantly reduced the intracellular lipid accumulation in 3T3-L1 preadipocyte cells by targeting miR-27a and miR-27b as well as peroxisome proliferator-activated receptor γ (PPARγ) in the early stage of differentiation, while A-type EC dimer and B-type EC dimer showed little effect. In addition, our results revealed that the inhibitory effects of proanthocyanidin dimers on 3T3-L1 preadipocyte differentiation were highly structure-dependent and the effects were associated with the dimer-membrane interactions. The presence of galloyl moieties and A-type linkage within the structure of proanthocyanidins might be crucial for their inhibitory effect on adipogenesis. The strong disturbing effects of A-type ECG and A type EGCG dimers on the fluidity, hydrophobicity and permeability of membrane of 3T3-L1 preadipocyte cell were at least, in part, responsible for their distinct inhibitory effects on adipocyte hyperplasia.
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Affiliation(s)
- Wei Zhu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Bo Zou
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Guangzhou 510610, China
| | - Rongzu Nie
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Zhang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chun-mei Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Food Science (Huazhong Agricultural University), Ministry of Education, Wuhan, China.
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Speck N, Brandsch C, Schmidt N, Yazdekhasti N, Hirche F, Lucius R, Rimbach G, Stangl GI, Reiss K. The Antiatherogenic Effect of Fish Oil in Male Mice Is Associated with a Diminished Release of Endothelial ADAM17 and ADAM10 Substrates. J Nutr 2015; 145:1218-26. [PMID: 25926412 DOI: 10.3945/jn.115.211375] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 03/30/2015] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Growing evidence suggests that disintegrin and metalloprotease (ADAM) 17 (ADAM17) and ADAM10 contribute to the pathogenesis of vascular diseases. ADAM17 promotes inflammatory processes by liberating tumor necrosis factor α, interleukin 6 receptor (IL-6R), and tumor necrosis factor receptor 1 (TNFR1). ADAM17 and ADAM10 modulate vascular permeability by cleaving endothelial adhesion molecules such as junctional adhesion molecule A (JAM-A) and vascular endothelial cadherin (VE-cadherin), respectively. OBJECTIVE This study was designed to investigate whether a link might exist between the protective effects of fish oil (FO) supplementation against atherosclerosis and ADAM function. METHODS Male LDL receptor knockout (LDLR(-/-)) mice and male wild-type (WT) mice were fed a Western diet (200 g/kg fat, 1.5 g/kg cholesterol) containing either 20% lard (LDLR(-/-)-lard and WT-lard groups) or 10% lard combined with 10% FO (LDLR(-/-)-FO and WT-FO groups) for 12 wk. Atherosclerotic lesion development and fatty acid composition of liver microsomes were evaluated. ADAM10 and ADAM17 expression was determined by quantitative real-time polymerase chain reaction and immunoblot analyses. Concentrations of soluble ADAM substrates in plasma and liver extracts were measured by ELISA. RESULTS Diets supplemented with FO markedly reduced development of early atherosclerotic lesions in LDLR(-/-) mice (LDLR(-/-)-lard group vs. LDLR(-/-)-FO group mean ± SD: 29.6 ± 6.1% vs. 22.5 ± 4.2%, P < 0.05). This was not accompanied by changes in expression of ADAM17 or ADAM10 in the aorta or liver. No dietary effects on circulating TNFR1 (LDLR(-/-)-lard group vs. LDLR(-/-)-FO group mean ± SD: 1.22 ± 0.23 vs. 1.39 ± 0.28, P > 0.2) or IL-6R (1.06 ± 0.12 vs. 0.98 ± 0.09 fold of WT-lard group, P > 0.1), classical substrates of ADAM17 on macrophages, and neutrophil granulocytes were observed. However, a reduction in atherosclerotic lesions in the LDLR(-/-)-FO group was accompanied by a significant reduction in the circulating endothelial cell adhesion molecules JAM-A (LDLR(-/-)-lard group vs. LDLR(-/-)-FO group mean ± SD: 1.42 ± 0.20 vs. 0.95 ± 0.56 fold of WT-lard group, P < 0.05), intercellular adhesion molecule 1 (1.15 ± 0.14 vs. 0.88 ± 0.17 fold of WT-lard group, P < 0.05), and VE-cadherin (0.88 ± 0.12 vs. 0.72 ± 0.15 fold of WT-lard group, P < 0.05), reflecting reduced ADAM activity in endothelial cells. CONCLUSION FO exerted an antiatherogenic effect on male LDLR(-/-) mice that was accompanied by a reduced release of ADAM17 and ADAM10 substrates from endothelial cells. It is suggested that FO-decreased ADAM activity contributes to improved endothelial barrier function and thus counteracts intimal lipoprotein insudation and macrophage accumulation.
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Affiliation(s)
| | - Corinna Brandsch
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle/Saale, Germany
| | - Nadine Schmidt
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle/Saale, Germany
| | - Narges Yazdekhasti
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle/Saale, Germany
| | - Frank Hirche
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle/Saale, Germany
| | | | - Gerald Rimbach
- Institute of Human Nutrition and Food Science, Christian-Albrechts University of Kiel, Kiel, Germany; and
| | - Gabriele I Stangl
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle/Saale, Germany
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Rizza S, Copetti M, Cardellini M, Menghini R, Pecchioli C, Luzi A, Di Cola G, Porzio O, Ippoliti A, Romeo F, Pellegrini F, Federici M. A score including ADAM17 substrates correlates to recurring cardiovascular event in subjects with atherosclerosis. Atherosclerosis 2015; 239:459-64. [PMID: 25687272 DOI: 10.1016/j.atherosclerosis.2015.01.029] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 01/12/2015] [Accepted: 01/21/2015] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Atherosclerosis disease is a leading cause for mortality and morbidity. The narrowing/rupture of a vulnerable atherosclerotic plaque is accountable for acute cardiovascular events. However, despite of an intensive research, a reliable clinical method which may disclose a vulnerable patient is still unavailable. APPROACH AND RESULTS We tested the association of ADAM17 (A Disintegrin and Metallo Protease Domain 17) circulating substrates (sICAM-1, sVCAM-1, sIL6R and sTNFR1) with a second major cardiovascular events [MACEs] (cardiovascular death, peripheral artery surgeries, non-fatal myocardial infarction and non-fatal stroke) in 298 patients belonging to the Vascular Diabetes (AVD) study. To evaluate ADAM17 activity we create ADAM17 score through a RECPAM model. Finally we tested the discrimination ability and the reclassification of clinical models. At follow-up (mean 47 months, range 1-118 months), 55 MACEs occurred (14 nonfatal MI, 14 nonfatal strokes, 17 peripheral artery procedures and 10 cardiovascular deaths) (incidence = 7.8% person-years). An increased risk for incident events was observed among the high ADAM17 score individuals both in univariable (HR 19.20, 95% CI 15.82-63.36, p < 0.001) and multivariable analysis (HR 3.42, 95% CI 1.55-7.54, p < 0.001). Finally we found that ADAM17 score significantly increases the prediction accuracy of the Framingham Recurring-Coronary-Heart-Disease-Score, with a significant improvement in discrimination (integrated discrimination improvement = 9%, p = 0.012) and correctly reclassifying 10% of events and 41% of non-events resulting in a cNRI = 0.51 (p = 0.005). CONCLUSION We demonstrated a positive role of ADAM17 activity to predicting CV events. We think that an approach that targets strategies beyond classic cardiovascular risk factors control is necessary in individuals with an established vascular atherosclerosis.
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Affiliation(s)
- Stefano Rizza
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy; Center for Atherosclerosis, Policlinico Tor Vergata, Rome, Italy
| | - Massimiliano Copetti
- Unit of Biostatistics, IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Marina Cardellini
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy; Center for Atherosclerosis, Policlinico Tor Vergata, Rome, Italy
| | - Rossella Menghini
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Chiara Pecchioli
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy; Center for Atherosclerosis, Policlinico Tor Vergata, Rome, Italy
| | - Alessio Luzi
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy; Center for Atherosclerosis, Policlinico Tor Vergata, Rome, Italy
| | - Giovanni Di Cola
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy; Center for Atherosclerosis, Policlinico Tor Vergata, Rome, Italy
| | - Ottavia Porzio
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy
| | - Arnaldo Ippoliti
- Department of Biopathology and Diagnostic Imaging, University of Rome Tor Vergata, Italy
| | - Franco Romeo
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Fabio Pellegrini
- Unit of Biostatistics, IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Massimo Federici
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy; Center for Atherosclerosis, Policlinico Tor Vergata, Rome, Italy.
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Kim JM, Jeung HC, Rha SY, Yu EJ, Kim TS, Shin YK, Zhang X, Park KH, Park SW, Chung HC, Powis G. The effect of disintegrin-metalloproteinase ADAM9 in gastric cancer progression. Mol Cancer Ther 2014; 13:3074-85. [PMID: 25344581 DOI: 10.1158/1535-7163.mct-13-1001] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Advanced gastric cancer is one of the most aggressive gastrointestinal malignancies, and ADAM (A disintegrin and metalloproteinase)-9 is a cell-surface membrane glycoprotein with oncogenic properties that is overexpressed in several cancers. Herein, we investigated the biologic mechanism of ADAM9 in the progression, proliferation, and invasion of gastric cancer. First, we detected ADAM's expression, processing, and protease activity in gastric cancer cells. Protease activity was moderately correlated with ADAM9 protein expression, but was better related to a processed smaller molecular weight (84 kDa) form of ADAM9. Knockdown of ADAM9 or specifically targeted monoclonal antibody (RAV-18) suppressed cancer cell proliferation and invasion in high ADAM9-expressing cells, not in low ADAM9-expressing cells. RAV-18 showed in vivo antitumor activity in a gastric cancer xenograft model. Hypoxia (1% oxygen) induced ADAM9 expression and functional activity in low ADAM9-expressing gastric cancer cells that was inhibited by siRNA knockdown or RAV-18 antibody to levels in normoxic cells. Overall, our studies show that ADAM9 plays an important role in gastric cancer proliferation and invasion, and that while expressed in some gastric cancer cells at high levels that are responsive to functional inhibition and antitumor activity of a catalytic site-directed antibody, other gastric cancer cells have low levels of expression and only when exposed to hypoxia do ADAM9 levels increase and the cells become responsive to ADAM9 antibody inhibition. Therefore, our findings suggest that ADAM9 could be an effective therapeutic target for advanced gastric cancer.
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Affiliation(s)
- Jeong Min Kim
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea. Brain Korea 21 Projects for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hei-Cheul Jeung
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Sun Young Rha
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea. Brain Korea 21 Projects for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eun Jeong Yu
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea. Department of Biology, Baylor University, Waco, Texas
| | - Tae Soo Kim
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - You Keun Shin
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Xianglan Zhang
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyu Hyun Park
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Woo Park
- Brain Korea 21 Projects for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyun Cheol Chung
- Cancer Metastasis Research Center, Institute for Cancer Research, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea. Brain Korea 21 Projects for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Garth Powis
- Sanford-Burnham Research Institute Cancer Center, La Jolla, California
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Varela LM, Bermúdez B, Ortega-Gómez A, López S, Sánchez R, Villar J, Anguille C, Muriana FJG, Roux P, Abia R. Postprandial triglyceride-rich lipoproteins promote invasion of human coronary artery smooth muscle cells in a fatty-acid manner through PI3k-Rac1-JNK signaling. Mol Nutr Food Res 2014; 58:1349-64. [DOI: 10.1002/mnfr.201300749] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 01/03/2014] [Accepted: 01/22/2014] [Indexed: 01/09/2023]
Affiliation(s)
- Lourdes M. Varela
- Laboratory of Cellular and Molecular Nutrition; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC); Seville Spain
| | - Beatriz Bermúdez
- Laboratory of Cellular and Molecular Nutrition; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC); Seville Spain
| | - Almudena Ortega-Gómez
- Laboratory of Cellular and Molecular Nutrition; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC); Seville Spain
| | - Sergio López
- Laboratory of Cellular and Molecular Nutrition; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC); Seville Spain
| | - Rosario Sánchez
- Laboratory of Cellular and Molecular Nutrition; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC); Seville Spain
| | - Jose Villar
- Experimental Clinic Ward for Vascular Risk, IBIS; Virgen del Rocio University Hospital, CSIC, University of Seville; Seville Spain
| | - Christelle Anguille
- Center de Recherche en Biochimie Macromoléculaire; Centre National de la Recherche Scientifique (CNRS); Universite Mixte de Recherche 5237; Montpellier France
| | - Francisco J. G. Muriana
- Laboratory of Cellular and Molecular Nutrition; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC); Seville Spain
| | - Pierre Roux
- Center de Recherche en Biochimie Macromoléculaire; Centre National de la Recherche Scientifique (CNRS); Universite Mixte de Recherche 5237; Montpellier France
| | - Rocío Abia
- Laboratory of Cellular and Molecular Nutrition; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC); Seville Spain
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Mezentsev A, Nikolaev A, Bruskin S. Matrix metalloproteinases and their role in psoriasis. Gene 2014; 540:1-10. [PMID: 24518811 DOI: 10.1016/j.gene.2014.01.068] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 12/20/2013] [Accepted: 01/22/2014] [Indexed: 01/11/2023]
Abstract
This review summarizes the contribution of matrix metalloproteinases to the pathogenesis of psoriasis. In psoriasis, matrix metalloproteinases are involved in the structural changes of the epidermis via the modification of intracellular contacts and the composition of the extracellular matrix, promoting angiogenesis in the dermal blood vessels and the infiltration of immune cells. Moreover, some matrix metalloproteinases become differentially expressed during the disease eruption and their expression correlates with the clinical score. A separate section of the review is dedicated to the pharmacological approaches that are used to control matrix metalloproteinases, such as oral metalloproteinase inhibitors, such as azasugars and phosphonamides. The aim of this manuscript is to assess the role of matrix metalloproteinases in the physiological processes that accompany the disease. Moreover, it is especially important to evaluate progress in this field and characterize recently appeared medicines. Because any experimental drugs that target matrix metalloproteinases are involved in active clinical trials, this manuscript also reviews the latest experimental data regarding distribution and expression of matrix metalloproteinases in healthy skin and lesional skin. Therefore, the performed analysis highlights potential problems associated with the use of metalloproteinase inhibitors in clinical studies and suggests simple and easy understandable criteria that future innovative metalloproteinase inhibitors shall satisfy.
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Affiliation(s)
- Alexandre Mezentsev
- Vavilov Institute of General Genetics RAS, Gubkina str., Bld. 3, 119991 Moscow, Russia.
| | - Alexander Nikolaev
- Vavilov Institute of General Genetics RAS, Gubkina str., Bld. 3, 119991 Moscow, Russia.
| | - Sergey Bruskin
- Vavilov Institute of General Genetics RAS, Gubkina str., Bld. 3, 119991 Moscow, Russia.
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Perna AF, Sepe I, Lanza D, Capasso R, Zappavigna S, Capasso G, Caraglia M, Ingrosso D. Hydrogen sulfide reduces cell adhesion and relevant inflammatory triggering by preventing ADAM17-dependent TNF-α activation. J Cell Biochem 2013; 114:1536-48. [DOI: 10.1002/jcb.24495] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 12/18/2012] [Indexed: 12/31/2022]
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Menghini R, Fiorentino L, Casagrande V, Lauro R, Federici M. The role of ADAM17 in metabolic inflammation. Atherosclerosis 2013; 228:12-7. [PMID: 23384719 DOI: 10.1016/j.atherosclerosis.2013.01.024] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 01/12/2013] [Accepted: 01/14/2013] [Indexed: 01/04/2023]
Abstract
The TNF-alpha Converting Enzyme (TACE), also called ADAM17 (A Disintegrin and A Metalloproteinase 17) is a type I transmembrane metalloproteinase involved in the shedding of the extracellular domain of several transmembrane proteins such as cytokines, growth factors, receptors and adhesion molecules. Some of these proteolytic events are part of cleavage cascades known as Regulated Intramembrane Proteolysis and lead to intracellular signaling. Evidence is provided that ADAM17 plays a role in atherosclerosis, in adipose tissue metabolism, insulin resistance and diabetes. The multitude of substrates cleaved by ADAM17 makes this enzyme an attractive candidate to study its role in inflammatory disorders. This review is focused on effects of ADAM17 in major metabolic tissues.
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Affiliation(s)
- Rossella Menghini
- Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy
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Complement and atherosclerosis-united to the point of no return? Clin Biochem 2012; 46:20-5. [PMID: 23010447 DOI: 10.1016/j.clinbiochem.2012.09.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 09/13/2012] [Accepted: 09/13/2012] [Indexed: 12/11/2022]
Abstract
Atherosclerosis is widely regarded as a chronic inflammatory disease that develops as a consequence of entrapment of oxidized low-density lipoprotein (LDL) in the arterial intima and its interaction with components of both innate and adaptive immunity. This article reviews the role of the complement system in the context of a different concept on atherogenesis. Arguments are forwarded in support of the contention that enzymatic and not oxidative modification of LDL is the prerequisite for transforming the lipoprotein into a moiety that is recognized by the innate immune system. In a departure from general wisdom, it is proposed that these processes are initially not pathological. To the contrary, they are physiological and meaningful because only thus can the stranded lipoprotein with its insoluble cargo, cholesterol, be removed from tissues. It is contended that histopathologically defined initial foam cell formation develops without inflammation and is reversible. Atherosclerosis as a disease evolves only when the cholesterol removal machinery is overloaded and it then represents a special type of immunopathological process primarily involving immune effectors of the innate rather than the adaptive immune system. This sets it apart from classical immunopathological reactions that are all based on dysfunctional adaptive immunity. But as with all other diseases of known origin, a defined molecular trigger, enzymatically modified-LDL (eLDL), exists whose intimal accumulation is required to initiate the pathologic process. And as with other diseases, the course of atherosclerosis will then be influenced by myriad genetic, endogenous, and environmental factors that by themselves, however, will not cause the disease. This simple concept is completely in line with general clinical experience and with the results of major clinical trials that have been conducted during the past decades.
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Pore-forming bacterial toxins and antimicrobial peptides as modulators of ADAM function. Med Microbiol Immunol 2012; 201:419-26. [PMID: 22972233 DOI: 10.1007/s00430-012-0260-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 08/23/2012] [Indexed: 02/05/2023]
Abstract
Membrane-perturbating proteins and peptides are widespread agents in biology. Pore-forming bacterial toxins represent major virulence factors of pathogenic microorganisms. Membrane-damaging peptides constitute important antimicrobial effectors of innate immunity. Membrane perturbation can incur multiple responses in mammalian cells. The present discussion will focus on the interplay between membrane-damaging agents and the function of cell-bound metalloproteinases of the ADAM family. These transmembrane enzymes have emerged as the major proteinase family that mediate the proteolytic release of membrane-associated proteins, a process designated as "shedding". They liberate a large spectrum of functionally active molecules including inflammatory cytokines, growth factor receptors and cell adhesion molecules, thereby regulating such vital cellular functions as cell-cell adhesion, cell proliferation and cell migration. ADAM activation may constitute part of the cellular recovery machinery on the one hand, but likely also promotes inflammatory processes on the other. The mechanisms underlying ADAM activation and the functional consequences thereof are currently the subject of intensive research. Attention here is drawn to the possible involvement of purinergic receptors and ceramide generation in the context of ADAM activation following membrane perturbation by membrane-active agents.
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Perillo VL, Fernández-Nievas GA, Vallés AS, Barrantes FJ, Antollini SS. The position of the double bond in monounsaturated free fatty acids is essential for the inhibition of the nicotinic acetylcholine receptor. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2012; 1818:2511-20. [PMID: 22699039 DOI: 10.1016/j.bbamem.2012.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 05/31/2012] [Accepted: 06/04/2012] [Indexed: 11/19/2022]
Abstract
Free fatty acids (FFAs) are non-competitive antagonists of the nicotinic acetylcholine receptor (AChR). Their site of action is supposedly located at the lipid-AChR interface. To elucidate the mechanism involved in this antagonism, we studied the effect that FFAs with a single double-bond at different positions (ω6, ω9, ω11 and ω13 cis-18:1) have on different AChR properties. Electrophysiological studies showed that only two FFAs (ω6 and ω9) reduced the duration of the channel open-state. The briefest component of the closed-time distribution remained unaltered, suggesting that ω6 and ω9 behave as allosteric blockers. Fluorescence resonance energy transfer studies indicated that all FFAs locate at the lipid-AChR interface, ω6 being restricted to annular sites and all others occupying non-annular sites. The perturbation of the native membrane order by FFAs was evaluated by DPH (1,6-diphenyl-1,3,5-hexatriene) and Laurdan fluorescence polarization studies, with the greatest decrease observed for ω9 and ω11. AChR conformational changes produced by FFAs present at the lipid bilayer were evaluated by fluorescence quenching studies of pyrene-labeled AChR and also using the AChR conformational-sensitive probe crystal violet. All cis-FFAs produced AChR conformational changes at the transmembrane level, but only ω9, ω11 and ω13 perturbed the resting state. Thus, the position and isomerism of the torsion angle of unsaturated FFAs are probably a key factor in terms of AChR blockage, suggesting that FFAs with a unique cis double bond at a superficial position inside the membrane directly inhibit AChR function by perturbing a potential conserved core structure for AChR gating at that level.
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Sommer A, Fries A, Cornelsen I, Speck N, Koch-Nolte F, Gimpl G, Andrä J, Bhakdi S, Reiss K. Melittin modulates keratinocyte function through P2 receptor-dependent ADAM activation. J Biol Chem 2012; 287:23678-89. [PMID: 22613720 DOI: 10.1074/jbc.m112.362756] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Melittin, the major component of the bee venom, is an amphipathic, cationic peptide with a wide spectrum of biological properties that is being considered as an anti-inflammatory and anti-cancer agent. It modulates multiple cellular functions but the underlying mechanisms are not clearly understood. Here, we report that melittin activates disintegrin-like metalloproteases (ADAMs) and that downstream events likely contribute to the biological effects evoked by the peptide. Melittin stimulated the proteolysis of ADAM10 and ADAM17 substrates in human neutrophil granulocytes, endothelial cells and murine fibroblasts. In human HaCaT keratinocytes, melittin induced shedding of the adhesion molecule E-cadherin and release of TGF-α, which was accompanied by transactivation of the EGF receptor and ERK1/2 phosphorylation. This was followed by functional consequences such as increased keratinocyte proliferation and enhanced cell migration. Evidence is provided that ATP release and activation of purinergic P2 receptors are involved in melittin-induced ADAM activation. E-cadherin shedding and EGFR phosphorylation were dose-dependently reduced in the presence of ATPases or P2 receptor antagonists. The involvement of P2 receptors was underscored in experiments with HEK cells, which lack the P2X7 receptor and showed strikingly increased response to melittin stimulation after transfection with this receptor. Our study provides new insight into the mechanism of melittin function which should be of interest particularly in the context of its potential use as an anti-inflammatory or anti-cancer agent.
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Affiliation(s)
- Anselm Sommer
- Department of Dermatology, Christian-Albrecht University Kiel, 24098 Kiel, Germany
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Zhang H, Dellsperger KC, Zhang C. The link between metabolic abnormalities and endothelial dysfunction in type 2 diabetes: an update. Basic Res Cardiol 2011; 107:237. [PMID: 22189563 DOI: 10.1007/s00395-011-0237-1] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 11/30/2011] [Accepted: 12/05/2011] [Indexed: 01/06/2023]
Abstract
Despite abundant clinical evidence linking metabolic abnormalities to diabetic vasculopathy, the molecular basis of individual susceptibility to diabetic vascular complications is still largely undetermined. Endothelial dysfunction in diabetes-associated vascular complications is considered an early stage of vasculopathy and has attracted considerable research interests. Type 2 diabetes is characterized by metabolic abnormalities, such as hyperglycemia, excess liberation of free fatty acids (FFA), insulin resistance and hyperinsulinemia. These abnormalities exert pathological impact on endothelial function by attenuating endothelium-mediated vasomotor function, enhancing endothelial apoptosis, stimulating endothelium activation/endothelium-monocyte adhesion, promoting an atherogenic response and suppressing barrier function. There are multiple signaling pathways contributing to the adverse effects of glucotoxicity on endothelial function. Insulin maintains the normal balance for release of several factors with vasoactive properties. Abnormal insulin signaling in the endothelium does not affect the whole-body glucose metabolism, but impairs endothelial response to insulin and accelerates atherosclerosis. Excessive level of FFA is implicated in the pathogenesis of insulin resistance. FFA induces endothelial oxidative stress, apoptosis and inflammatory response, and inhibits insulin signaling. Although hyperglycemia, insulin resistance, hyperinsulinemia and dyslipidemia independently contribute to endothelial dysfunction via various distinct mechanisms, the mutual interactions may synergistically accelerate their adverse effects. Oxidative stress and inflammation are predicted to be among the first alterations which may trigger other downstream mediators in diabetes associated with endothelial dysfunction. These mechanisms may provide insights into potential therapeutic targets that can delay or reverse diabetic vasculopathy.
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Affiliation(s)
- Hanrui Zhang
- Departments of Internal Medicine, Medical Pharmacology & Physiology and Nutritional Sciences, Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211, USA.
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The role of ADAM-mediated shedding in vascular biology. Eur J Cell Biol 2011; 91:472-85. [PMID: 22138087 DOI: 10.1016/j.ejcb.2011.09.003] [Citation(s) in RCA: 167] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 07/08/2011] [Accepted: 09/08/2011] [Indexed: 01/14/2023] Open
Abstract
Within the vasculature the disintegrins and metalloproteinases (ADAMs) 8, 9, 10, 12, 15, 17, 19, 28 and 33 are expressed on endothelial cells, smooth muscle cells and on leukocytes. As surface-expressed proteases they mediate cleavage of vascular surface molecules at an extracellular site close to the membrane. This process is termed shedding and leads to the release of a soluble substrate ectodomain thereby critically modulating the biological function of the substrate. In the vasculature several surface molecules undergo ADAM-mediated shedding including tumour necrosis factor (TNF) α, interleukin (IL) 6 receptor α, L-selectin, vascular endothelial (VE)-cadherin, the transmembrane CX3C-chemokine ligand (CX3CL) 1, Notch, transforming growth factor (TGF) and heparin-binding epidermal growth factor (HB-EGF). These substrates play distinct roles in vascular biology by promoting inflammation, permeability changes, leukocyte recruitment, resolution of inflammation, regeneration and/or neovascularisation. Especially ADAM17 and ADAM10 are capable of cleaving many substrates with diverse function within the vasculature, whereas other ADAMs have a more restricted substrate range. Therefore, targeting ADAM17 or ADAM10 by pharmacologic inhibition or gene knockout not only attenuates the inflammatory response in animal models but also affects tissue regeneration and neovascularisation. Recent discoveries indicate that other ADAMs (e.g. ADAM8 and 9) also play important roles in vascular biology but appear to have more selective effects on vascular responses (e.g. on neovascularisation only). Although, targeting of ADAM17 and ADAM10 in inflammatory diseases is still a promising approach, temporal and spatial as well as substrate-specific inhibition approaches are required to minimise undesired side effects on vascular cells.
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48
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Abstract
Alpha-secretase-mediated cleavage of the amyloid precursor protein (APP) releases the neuroprotective APP fragment sαAPP and prevents amyloid β peptide (Aβ) generation. Moreover, α-secretase-like cleavage of the Aβ transporter 'receptor for advanced glycation end products' counteracts the import of blood Aβ into the brain. Assuming that Aβ is responsible for the development of Alzheimer's disease (AD), activation of α-secretase should be preventive. α-Secretase-mediated APP cleavage can be activated via several G protein-coupled receptors and receptor tyrosine kinases. Protein kinase C, mitogen-activated protein kinases, phosphatidylinositol 3-kinase, cAMP and calcium are activators of receptor-induced α-secretase cleavage. Selective targeting of receptor subtypes expressed in brain regions affected by AD appears reasonable. Therefore, the PACAP receptor PAC1 and possibly the serotonin 5-HT(6) receptor subtype are promising targets. Activation of APP α-secretase cleavage also occurs upon blockade of cholesterol synthesis by statins or zaragozic acid A. Under physiological statin concentrations, the brain cholesterol content is not influenced. Statins likely inhibit Aβ production in the blood by α-secretase activation which is possibly sufficient to inhibit AD development. A disintegrin and metalloproteinase 10 (ADAM10) acts as α-secretase on APP. By targeting the nuclear retinoic acid receptor β, the expression of ADAM10 and non-amyloidogenic APP processing can be enhanced. Excessive activation of ADAM10 should be avoided because ADAM10 and also ADAM17 are not APP-specific. Both ADAM proteins cleave various substrates, and therefore have been associated with tumorigenesis and tumor progression.
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Affiliation(s)
- Rolf Postina
- Institute of Pharmacy and Biochemistry, Johannes Gutenberg University Mainz, Johann-Joachim-Becherweg 30, Mainz, Germany
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