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Abdelraheem KM, Younis NN, Shaheen MA, Elswefy SE, Ali SI. Raspberry ketone improves non-alcoholic fatty liver disease induced in rats by modulating sphingosine kinase/sphingosine-1-phosphate and toll-like receptor 4 pathways. J Pharm Pharmacol 2023:7160323. [PMID: 37167472 DOI: 10.1093/jpp/rgad044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 04/19/2023] [Indexed: 05/13/2023]
Abstract
OBJECTIVES To investigate the therapeutic role of calorie-restricted diet (CR) and raspberry ketone (RK) in non-alcoholic fatty liver disease (NAFLD) and the implication of sphingosine kinase-1 (SphK1)/sphingosine-1-phosphate (S1P) and toll-like receptor 4 (TLR4) signalling. METHODS NAFLD was induced by feeding rats high-fat-fructose-diet (HFFD) for 6 weeks. Rats were then randomly assigned to three groups (n = 6 each); NAFLD group continued on HFFD for another 8 weeks. CR group was switched to CR diet (25% calorie restriction) for 8 weeks and RK group was switched to normal diet and received RK (55 mg/kg/day; orally) for 8 weeks. Another six rats were used as normal control. KEY FINDINGS HFFD induced a state of NAFLD indicated by increased fat deposition in liver tissue along with dyslipidemia, elevated liver enzymes, oxidative stress and inflammation. Either CR diet or RK reversed these changes and decreased HFFD-induced elevation of hepatic SphK1, S1P, S1PR1 and TLR4. Of notice, RK along with a normal calorie diet was even better than CR alone in most studied parameters. CONCLUSIONS SphK1/S1P and TLR4 are interconnected and related to the establishment of HFFD-induced NAFLD and can be modulated by RK. Supplementation of RK without calorie restriction to patients with NAFLD unable to follow CR diet to achieve their treatment goals would be a promising therapeutic modality.
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Affiliation(s)
- Kareem M Abdelraheem
- Biochemistry Department, Faculty of Pharmacy, Sinai University - Qantara Branch, Ismailia, Egypt
| | - Nahla N Younis
- Biochemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Mohamed A Shaheen
- Histology and Cell Biology Department, Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
| | - Sahar E Elswefy
- Biochemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
- Biochemistry Department, Faculty of Pharmacy, Delta University for Sciences and Technology, Gamasa, Egypt
| | - Sousou I Ali
- Biochemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
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2
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Istiaq A, Ohta K. A review on Tsukushi: mammalian development, disorders, and therapy. J Cell Commun Signal 2022; 16:505-513. [PMID: 35233735 PMCID: PMC9733752 DOI: 10.1007/s12079-022-00669-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 12/13/2022] Open
Abstract
Tsukushi (TSK), a leucine-rich peptidoglycan in the extracellular compartment, mediates multiple signaling pathways that are critical for development and metabolism. TSK regulates signaling pathways that eventually control cellular communication, proliferation, and cell fate determination. Research on TSK has become more sophisticated in recent years, illustrating its involvement in the physiology and pathophysiology of neural, genetic, and metabolic diseases. In a recent study, we showed that TSK therapy reversed the pathophysiological abnormalities of the hydrocephalic (a neurological disorder) brain in mice. This review summarizes the roles of TSK in key signaling processes in the mammalian development, disorders, and evaluating its possible therapeutic and diagnostic potential.
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Affiliation(s)
- Arif Istiaq
- Department of Stem Cell Biology, Faculty of Arts and Science, Kyushu University, 819-0395 Fukuoka, Japan ,Department of Brain Morphogenesis, Institute of Molecular Embryology and Genetics, Kumamoto University, 860-8555 Kumamoto, Japan ,HIGO Program, Kumamoto University, 860-8555 Kumamoto, Japan
| | - Kunimasa Ohta
- Department of Stem Cell Biology, Faculty of Arts and Science, Kyushu University, 819-0395 Fukuoka, Japan
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3
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Gan PR, Wang RH, Deng R, Wu H, Bu YH, Chen FY, Dong XT, Ke JT. Geniposide inhibits SphK1 membrane targeting to restore macrophage polarization balance in collagen-induced arthritis mice. Eur J Pharmacol 2022; 933:175271. [PMID: 36108735 DOI: 10.1016/j.ejphar.2022.175271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/23/2022] [Accepted: 09/08/2022] [Indexed: 11/03/2022]
Abstract
Imbalance of macrophage polarization plays a critical role in the progression of rheumatoid arthritis (RA). Geniposide (GE) has been shown to exert anti-inflammatory effects. However, the effect of GE on macrophage polarization remains unclear. Here, we investigated the regulation of GE on the imbalance of macrophage polarization in RA and how it functions. We established a mouse model of collagen-induced arthritis (CIA) and isolated bone marrow-derived macrophages (BMDMs). The results confirmed that pro-inflammatory M1 macrophages were dominant in CIA mice, but the polarization imbalance of macrophages was restored to a certain extent after GE treatment. Furthermore, the membrane targeting of sphingosine kinase 1 (SphK1) was increased in BMDMs of CIA mice, as manifested by increased membrane and cytoplasmic expression of p-SphK1 and high secretion level of sphingosine-1-phosphate (S1P). RAW264.7 cells were stimulated with lipopolysaccharide (LPS)-interferon (IFN)-γ or interleukin (IL)-4 to induce M1 or M2 phenotype, respectively, to revalidate the results obtained in BMDMs. The results again observed SphK1 membrane targeting in LPS-IFN-γ-stimulated RAW264.7 cells. Selective inhibition of SphK1 by PF543 or inhibition of the S1P receptors by FTY720 both restored the proportion of M1 and M2 macrophages in LPS-IFN-γ-stimulated RAW264.7 cells, confirming that SphK1 membrane targeting mediated a proportional imbalance in M1 and M2 macrophage polarization. In addition, GE inhibited SphK1 membrane targeting and kinase activity. Taken together, results confirmed that the inhibition of SphK1 membrane targeting by GE was responsible for restoring the polarization balance of macrophages in CIA mice.
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Affiliation(s)
- Pei-Rong Gan
- College of Pharmacy, Anhui University of Chinese Medicine, Qian Jiang Road 1, Hefei, 230012, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, 230012, China; Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei, 230012, China
| | - Rong-Hui Wang
- College of Pharmacy, Anhui University of Chinese Medicine, Qian Jiang Road 1, Hefei, 230012, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, 230012, China; Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei, 230012, China
| | - Ran Deng
- Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, 230012, China; Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei, 230012, China; School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, 230012, China.
| | - Hong Wu
- College of Pharmacy, Anhui University of Chinese Medicine, Qian Jiang Road 1, Hefei, 230012, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, 230012, China; Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei, 230012, China.
| | - Yan-Hong Bu
- College of Pharmacy, Anhui University of Chinese Medicine, Qian Jiang Road 1, Hefei, 230012, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, 230012, China; Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei, 230012, China
| | - Fang-Yuan Chen
- College of Pharmacy, Anhui University of Chinese Medicine, Qian Jiang Road 1, Hefei, 230012, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, 230012, China; Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei, 230012, China
| | - Xin-Tong Dong
- College of Pharmacy, Anhui University of Chinese Medicine, Qian Jiang Road 1, Hefei, 230012, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, 230012, China; Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei, 230012, China
| | - Jiang-Tao Ke
- College of Pharmacy, Anhui University of Chinese Medicine, Qian Jiang Road 1, Hefei, 230012, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Hefei, 230012, China; Anhui Province Key Laboratory of Research & Development of Chinese Medicine, Hefei, 230012, China
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4
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Zhao L, Liang J, Zhong W, Han C, Liu D, Chen X. Expression and prognostic analysis of BGN in head and neck squamous cell carcinoma. Gene 2022; 827:146461. [PMID: 35358652 DOI: 10.1016/j.gene.2022.146461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/06/2022] [Accepted: 03/25/2022] [Indexed: 12/11/2022]
Abstract
OBJECTIVE BGN belongs to class of small leucine rich proteoglycans, which is high expression in plenty of human cancers. However, the detailed role of BGN remains unclear in Head and neck squamous cell carcinoma (HNSC). MATERIALS AND METHODS In this study, we assessed the transcriptional expression, protein expression, prognosis, co-expressed genes, functional enrichment, and hub genes in HNSC patients based on the data published in the following databases: ONCOMINE, GEPIA, GEO, LinkedOmics, and HPA databases. Data from the TCGA database was used to analyze the correlations between BGN expression and different clinicopathological features, as well as prognostic analysis. RESULTS We found that the expression of BGN is higher in patients with HNSC than in control tissues. Pathologically, high BGN expression was significantly correlated with T3 and T4 stage. Besides, high expression of BGN is a poor prognostic factor for overall surviva, not disease free survival. The co-expression genes associated with BGN expression exhibited enriched in various function and pathway, such as extracellular matrix, mitochondrion, PI3K-Akt signaling pathway. A total of 10 hub genes were identified from the co-expressed genes, within which five genes, including FSTL1, LAMB1, SDC2, VCAN, and IGFBP7, were significantly increased in patient's with HNSC. BGN exhibited weak correlations with tumor-infiltrating CD4+ T, macrophages cell, and dendritic cells. Futhermore, many markers of infiltrating immune cells, such as Treg, showed different BGN-related immune infiltration patterns. BGN expression showed strong correlations with diverse immune marker sets in COAD and STAD. CONCLUSIONS Our results demonstrated that BGN is high expression in HNSC and is a poor prognostic factor for clinical outcome in patients with HNSC. It could serve as a potential prognostic biomarker for patients survival in HNSC.
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Affiliation(s)
- Longzhu Zhao
- Department of Otolaryngology-Head and Neck Surgery, The Third Medical Center of PLA General Hospital, Beijing, China
| | - Jiusi Liang
- Department of Otolaryngology-Head and Neck Surgery, The Third Medical Center of PLA General Hospital, Beijing, China
| | - Wen Zhong
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Caixia Han
- Department of Hematology-Oncology, International Cancer Center, Shenzhen University General Hospital, Shenzhen University Health Science Center, Shenzhen, China
| | - Dongzhe Liu
- Department of Hematology-Oncology, International Cancer Center, Shenzhen University General Hospital, Shenzhen University Health Science Center, Shenzhen, China.
| | - Xiuhui Chen
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
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Saha A, Cheriyamundath S, Kumar A, Gavert N, Brabletz T, Ben-Ze’ev A. A Necessary Role for Increased Biglycan Expression during L1-Mediated Colon Cancer Progression. Int J Mol Sci 2021; 23:ijms23010445. [PMID: 35008869 PMCID: PMC8745639 DOI: 10.3390/ijms23010445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 12/29/2021] [Accepted: 12/29/2021] [Indexed: 01/17/2023] Open
Abstract
Aberrant activation of Wnt/β-catenin signaling and downstream β-catenin-TCF target genes is a hallmark of colorectal cancer (CRC) development. We identified the immunoglobulin-like cell adhesion receptor L1CAM (L1) as a target of β-catenin-TCF transactivation in CRC cells. Overexpression of L1 in CRC cells confers enhanced proliferation, motility, tumorigenesis, and liver metastasis, and L1 is exclusively localized at invasive areas of human CRC tissue. Several genes are induced after L1 transfection into CRC cells by a mechanism involving the L1-ezrin-NF-κB pathway. We conducted a secretomic analysis of the proteins in the culture medium of L1-overexpressing CRC cells. We detected a highly increased level of biglycan, a small leucine-rich ECM component, and a signaling molecule. We found that induction of biglycan is required for the cellular processes conferred by L1, including enhanced proliferation, motility, tumorigenesis, and liver metastasis. The suppression of endogenous biglycan levels or a point mutation in the L1 ectodomain that regulates cell–cell adhesion mediated by L1 blocked the enhanced tumorigenic properties conferred by L1. The mechanism of biglycan induction by L1 involves the L1-NF-κB pathway. Blocking NF-κB signaling in L1 expressing cells suppressed the induction of biglycan and the tumorigenic properties conferred by L1. Biglycan expression was undetectable in the normal colonic mucosa, but expressed at highly increased levels in the tumor tissue, especially in the stroma. The therapeutic strategies to target biglycan expression might provide a useful approach for CRC treatment in L1-overexpressing tumors.
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Affiliation(s)
- Arka Saha
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel; (A.S.); (S.C.); (A.K.); (N.G.)
| | - Sanith Cheriyamundath
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel; (A.S.); (S.C.); (A.K.); (N.G.)
| | - Anmol Kumar
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel; (A.S.); (S.C.); (A.K.); (N.G.)
| | - Nancy Gavert
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel; (A.S.); (S.C.); (A.K.); (N.G.)
| | - Thomas Brabletz
- Department of Experimental Medicine I, Nikolaus-Feibiger-Center for Molecular Medicine, University of Erlangen-Nuernberg, 91054 Erlangen, Germany;
| | - Avri Ben-Ze’ev
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 7610001, Israel; (A.S.); (S.C.); (A.K.); (N.G.)
- Correspondence:
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Diehl V, Huber LS, Trebicka J, Wygrecka M, Iozzo RV, Schaefer L. The Role of Decorin and Biglycan Signaling in Tumorigenesis. Front Oncol 2021; 11:801801. [PMID: 34917515 PMCID: PMC8668865 DOI: 10.3389/fonc.2021.801801] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/09/2021] [Indexed: 12/12/2022] Open
Abstract
The complex and adaptive nature of malignant neoplasm constitute a major challenge for the development of effective anti-oncogenic therapies. Emerging evidence has uncovered the pivotal functions exerted by the small leucine-rich proteoglycans, decorin and biglycan, in affecting tumor growth and progression. In their soluble forms, decorin and biglycan act as powerful signaling molecules. By receptor-mediated signal transduction, both proteoglycans modulate key processes vital for tumor initiation and progression, such as autophagy, inflammation, cell-cycle, apoptosis, and angiogenesis. Despite of their structural homology, these two proteoglycans interact with distinct cell surface receptors and thus modulate distinct signaling pathways that ultimately affect cancer development. In this review, we summarize growing evidence for the complex roles of decorin and biglycan signaling in tumor biology and address potential novel therapeutic implications.
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Affiliation(s)
- Valentina Diehl
- Institute of Pharmacology and Toxicology, Goethe University, Frankfurt, Germany
| | - Lisa Sophie Huber
- Institute of Pharmacology and Toxicology, Goethe University, Frankfurt, Germany
| | - Jonel Trebicka
- Department of Internal Medicine I, Goethe University, Frankfurt, Germany
| | - Malgorzata Wygrecka
- Center for Infection and Genomics of the Lung, Member of the German Center for Lung Research, University of Giessen and Marburg Lung Center, Giessen, Germany
| | - Renato V. Iozzo
- Department of Pathology, Anatomy and Cell Biology and the Translational Cellular Oncology Program, Sidney Kimmel Cancer Center, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, PA, United States
| | - Liliana Schaefer
- Institute of Pharmacology and Toxicology, Goethe University, Frankfurt, Germany
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7
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Deng X, Li Y, Guo C, Zhao Z, Yuan G. Novel roles of Tsukushi in signaling pathways and multiple disease processes. Biofactors 2021; 47:512-521. [PMID: 33759220 DOI: 10.1002/biof.1723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 02/23/2021] [Indexed: 12/13/2022]
Abstract
Tsukushi (TSK), a newly identified hepatokine, is a member of the small leucine-rich proteoglycans (SLRPs) family. TSK was originally isolated and identified in the lens of the chicken. Preliminary research on TSK has focused on its role in various physiological processes such as growth and development, wound healing, and cartilage formation. In recent years, the role of TSK in regulating cell signaling pathways, cell proliferation, and differentiation has been studied. In addition, the research has gradually expanded to the fields of glycolipid metabolism and energy balance. This article briefly reviews the role of TSK in the physiological and pathological process.
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Affiliation(s)
- Xia Deng
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yanyan Li
- Department of Endocrinology, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Chang Guo
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhicong Zhao
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Guoyue Yuan
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
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8
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Appunni S, Rubens M, Ramamoorthy V, Anand V, Khandelwal M, Sharma A. Biglycan: an emerging small leucine-rich proteoglycan (SLRP) marker and its clinicopathological significance. Mol Cell Biochem 2021; 476:3935-3950. [PMID: 34181183 DOI: 10.1007/s11010-021-04216-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/23/2021] [Indexed: 12/22/2022]
Abstract
Extracellular matrix (ECM) plays an important role in the structural organization of tissue and delivery of external cues to the cell. Biglycan, a class I small leucine-rich proteoglycans (SLRP), is a key component of the ECM that participates in scaffolding the collagen fibrils and mediates cell signaling. Dysregulation of biglycan expression can result in wide range of clinical conditions such as metabolic disorder, inflammatory disorder, musculoskeletal defects and malignancies. In this review, we aim to update our current understanding regarding the link between altered expression of biglycan and different clinicopathological states. Biglycan interacts with toll like receptors (TLR)-2 and TLR-4 on the immune cells which initiates inflammation and aggravates inflammatory disorders. ECM unbound soluble biglycan acts as a DAMP (danger associated molecular pattern) resulting in sterile inflammation. Dysregulation of biglycan expression is also observed in inflammatory metabolic conditions such as atherosclerosis and obesity. In cancer, high-biglycan expression facilitates tumor growth, invasion and metastasis which is associated with poor clinical outcome. As a pivotal structural component of the ECM, biglycan strengthens the musculoskeletal system and its absence is associated with musculoskeletal defects. Thus, SLRP biglycan is a potential marker which is significantly altered in different clinicopathological states.
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Affiliation(s)
- Sandeep Appunni
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110 029, India
- Government Medical College, Kozhikode, Kerala, India
| | | | | | | | - Madhuram Khandelwal
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - Alpana Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110 029, India.
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9
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Biglycan: A regulator of hepatorenal inflammation and autophagy. Matrix Biol 2021; 100-101:150-161. [DOI: 10.1016/j.matbio.2021.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 02/07/2023]
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10
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Han CY, Kang I, Harten IA, Gebe JA, Chan CK, Omer M, Alonge KM, den Hartigh LJ, Gomes Kjerulf D, Goodspeed L, Subramanian S, Wang S, Kim F, Birk DE, Wight TN, Chait A. Adipocyte-Derived Versican and Macrophage-Derived Biglycan Control Adipose Tissue Inflammation in Obesity. Cell Rep 2021; 31:107818. [PMID: 32610121 DOI: 10.1016/j.celrep.2020.107818] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/20/2020] [Accepted: 06/04/2020] [Indexed: 12/18/2022] Open
Abstract
Obesity is characterized by adipose tissue inflammation. Because proteoglycans regulate inflammation, here we investigate their role in adipose tissue inflammation in obesity. We find that adipose tissue versican and biglycan increase in obesity. Versican is produced mainly by adipocytes and biglycan by adipose tissue macrophages. Both proteoglycans are also present in adipose tissue from obese human subjects undergoing gastric bypass surgery. Deletion of adipocyte-specific versican or macrophage-specific biglycan in mice reduces macrophage accumulation and chemokine and cytokine expression, although only adipocyte-specific versican deletion leads to sustained improvement in glucose tolerance. Macrophage-derived biglycan activates inflammatory genes in adipocytes. Versican expression increases in cultured adipocytes exposed to excess glucose, and adipocyte-conditioned medium stimulates inflammation in resident peritoneal macrophages, in part because of a versican breakdown product, versikine. These findings provide insights into the role of adipocyte- and macrophage-derived proteoglycans in adipose tissue inflammation in obesity.
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Affiliation(s)
- Chang Yeop Han
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Inkyung Kang
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Ingrid A Harten
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - John A Gebe
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Christina K Chan
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Mohamed Omer
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Kimberly M Alonge
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Laura J den Hartigh
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Diego Gomes Kjerulf
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Leela Goodspeed
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Savitha Subramanian
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Shari Wang
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA
| | - Francis Kim
- Division of Cardiology, University of Washington, Seattle, WA, USA
| | - David E Birk
- Department of Molecular Pharmacology & Physiology, University of South Florida, Tampa, FL, USA
| | - Thomas N Wight
- Matrix Biology Program, Benaroya Research Institute, Seattle, WA, USA
| | - Alan Chait
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Seattle, WA, USA.
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11
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Zeng-Brouwers J, Pandey S, Trebicka J, Wygrecka M, Schaefer L. Communications via the Small Leucine-rich Proteoglycans: Molecular Specificity in Inflammation and Autoimmune Diseases. J Histochem Cytochem 2020; 68:887-906. [PMID: 32623933 PMCID: PMC7708667 DOI: 10.1369/0022155420930303] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/06/2020] [Indexed: 12/15/2022] Open
Abstract
Inflammation is a highly regulated biological response of the immune system that is triggered by assaulting pathogens or endogenous alarmins. It is now well established that some soluble extracellular matrix constituents, such as small leucine-rich proteoglycans (SLRPs), can act as danger signals and trigger aseptic inflammation by interacting with innate immune receptors. SLRP inflammatory signaling cascade goes far beyond its canonical function. By choosing specific innate immune receptors, coreceptors, and adaptor molecules, SLRPs promote a switch between pro- and anti-inflammatory signaling, thereby determining disease resolution or chronification. Moreover, by orchestrating signaling through various receptors, SLRPs fine-tune inflammation and, despite their structural homology, regulate inflammatory processes in a molecule-specific manner. Hence, the overarching theme of this review is to highlight the molecular and functional specificity of biglycan-, decorin-, lumican-, and fibromodulin-mediated signaling in inflammatory and autoimmune diseases.
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Affiliation(s)
- Jinyang Zeng-Brouwers
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Johann Wolfgang Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany
| | - Sony Pandey
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Johann Wolfgang Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany
| | - Jonel Trebicka
- Translational Hepatology, Department of Internal Medicine I, University Clinic Frankfurt, Frankfurt, Germany
| | - Malgorzata Wygrecka
- Department of Biochemistry, Faculty of Medicine, Universities of Giessen and Marburg Lung Center, Giessen, Germany
- German Center for Lung Research, Giessen, Germany
| | - Liliana Schaefer
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Johann Wolfgang Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany
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12
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Xing L, Chang X, Shen L, Zhang C, Fan Y, Cho C, Zhang Z, Jiang H. Progress in drug delivery system for fibrosis therapy. Asian J Pharm Sci 2020; 16:47-61. [PMID: 33613729 PMCID: PMC7878446 DOI: 10.1016/j.ajps.2020.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/22/2020] [Accepted: 06/22/2020] [Indexed: 12/18/2022] Open
Abstract
Fibrosis is a necessary process in the progression of chronic disease to cirrhosis or even cancer, which is a serious disease threatening human health. Recent studies have shown that the early treatment of fibrosis is turning point and particularly important. Therefore, how to reverse fibrosis has become the focus and research hotspot in recent years. So far, the considerable progress has been made in the development of effective anti-fibrosis drugs and targeted drug delivery. Moreover, the existing research results will lay the foundation for more breakthrough delivery systems to achieve better anti-fibrosis effects. Herein, this review summaries anti-fibrosis delivery systems focused on three major organ fibrotic diseases such as liver, pulmonary, and renal fibrosis accompanied by the elaboration of relevant pathological mechanisms, which will provide inspiration and guidance for the design of fibrosis drugs and therapeutic systems in the future.
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Affiliation(s)
- Lei Xing
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Xin Chang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Lijun Shen
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Chenglu Zhang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Yatong Fan
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Chongsu Cho
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
- Corresponding authors.
| | - Zhiqi Zhang
- Department of General Surgery, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai 200081 China
- Corresponding authors.
| | - Hulin Jiang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
- Corresponding authors.
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13
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Roedig H, Damiescu R, Zeng-Brouwers J, Kutija I, Trebicka J, Wygrecka M, Schaefer L. Danger matrix molecules orchestrate CD14/CD44 signaling in cancer development. Semin Cancer Biol 2020; 62:31-47. [PMID: 31412297 DOI: 10.1016/j.semcancer.2019.07.026] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 02/06/2023]
Abstract
The tumor matrix together with inflammation and autophagy are crucial regulators of cancer development. Embedded in the tumor stroma are numerous proteoglycans which, in their soluble form, act as danger-associated molecular patterns (DAMPs). By interacting with innate immune receptors, the Toll-like receptors (TLRs), DAMPs autonomously trigger aseptic inflammation and can regulate autophagy. Biglycan, a known danger proteoglycan, can regulate the cross-talk between inflammation and autophagy by evoking a switch between pro-inflammatory CD14 and pro-autophagic CD44 co-receptors for TLRs. Thus, these novel mechanistic insights provide some explanation for the plethora of reports indicating that the same matrix-derived DAMP acts either as a promoter or suppressor of tumor growth. In this review we will summarize and critically discuss the role of the matrix-derived DAMPs biglycan, hyaluronan, and versican in regulating the TLR-, CD14- and CD44-signaling dialogue between inflammation and autophagy with particular emphasis on cancer development.
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Affiliation(s)
- Heiko Roedig
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany
| | - Roxana Damiescu
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany
| | - Jinyang Zeng-Brouwers
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany
| | - Iva Kutija
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany
| | - Jonel Trebicka
- Translational Hepatology, Department of Internal Medicine I, University Clinic Frankfurt, Germany
| | - Malgorzata Wygrecka
- Department of Biochemistry, Faculty of Medicine, Universities of Giessen and Marburg Lung Center, Giessen, Germany
| | - Liliana Schaefer
- Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Goethe University, Frankfurt am Main, Germany.
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14
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Scuruchi M, Potì F, Rodríguez-Carrio J, Campo GM, Mandraffino G. Biglycan and atherosclerosis: Lessons from high cardiovascular risk conditions. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158545. [PMID: 31672572 DOI: 10.1016/j.bbalip.2019.158545] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 09/26/2019] [Accepted: 10/17/2019] [Indexed: 02/07/2023]
Abstract
Atherosclerosis (ATH) is a chronic, dynamic, evolutive process involving morphological and structural subversion of artery walls, leading to the formation of atherosclerotic plaques. ATH generally initiates during the childhood, occurring as a result of a number of changes in the intima tunica and in the media of arteries. A key event occurring during the pathobiology of ATH is the accumulation of lipoproteins in the sub-intimal spaces mediated by extracellular matrix (ECM) molecules, especially by the chondroitin sulfate/dermatan sulfate (CS/DS) -containing proteoglycans (CS/DSPGs). Among them, the proteoglycan biglycan (BGN) is critically involved in the onset and progression of ATH and evidences show that BGN represents the missing link between the pro-atherogenic status induced by both traditional and non-traditional cardiovascular risk factors and the development and progression of vascular damage. In the light of these findings, the role of BGN in dyslipidemia, hypertension, cigarette smoking, diabetes, chronic kidney disease and inflammatory status is briefly analyzed and discussed in order to shed new light on the underlying mechanisms governing the association between BGN and ATH.
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Affiliation(s)
- Michele Scuruchi
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Francesco Potì
- Department of Medicine and Surgery-Unit of Neurosciences, University of Parma, Parma, Italy
| | - Javier Rodríguez-Carrio
- Area of Immunology, Department of Functional Biology, Faculty of Medicine, University of Oviedo, Oviedo, Spain; Instituto de Investigación Sanitaria Del Principado de Asturias (ISPA), Oviedo, Spain; Bone and Mineral Research Unit, Instituto Reina Sofía de Investigación Nefrológica, REDinREN Del ISCIII, Hospital Universitario Central de Asturias, Oviedo, Spain
| | | | - Giuseppe Mandraffino
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy.
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15
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Colineau L, Laabei M, Liu G, Ermert D, Lambris JD, Riesbeck K, Blom AM. Interaction of Streptococcus pyogenes with extracellular matrix components resulting in immunomodulation and bacterial eradication. Matrix Biol Plus 2020; 6-7:100020. [PMID: 33543018 PMCID: PMC7852299 DOI: 10.1016/j.mbplus.2020.100020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 11/16/2022] Open
Abstract
Streptococcus pyogenes is a major human pathogen that causes a variety of diseases ranging from mild skin and throat infections to fatal septicemia. In severe invasive infections, S. pyogenes encounters and interacts with components of the extracellular matrix (ECM), including small leucine rich-proteoglycans (SLRPs). In this study, we report a novel antimicrobial role played by SLRPs biglycan, decorin, fibromodulin and osteoadherin, specifically in promoting the eradication of S. pyogenes in a human sepsis model of infection. SLRPs can be released from the ECM and de novo synthesized by a number of cell types. We reveal that infection of human monocytes by S. pyogenes induces the expression of decorin. Furthermore, we show that the majority of genetically distinct and clinically relevant S. pyogenes isolates interact with SLRPs resulting in decreased survival in blood killing assays. Biglycan and decorin induce TLR2 and TLR4 signaling cascades resulting in secretion of proinflammatory and chemotactic molecules and recruitment of professional phagocytes. Surprisingly, SLRP-mediated elimination of S. pyogenes occurs independently of TLR activation. Our results indicate that SLRPs act in concert with human serum, enhancing deposition of complement activation fragments and the classical activator C1q on the bacterial surface, facilitating efficient microbial eradication. Addition of the complement C3 inhibitor compstatin significantly reverses SLRP-induced blood killing, confirming active complement as a key mediator in SLRP-mediated bacterial destruction. Taken together our results add to the functional repertoire of SLRPs, expanding to encompass their role in controlling bacterial infection. Streptococcus pyogenes bind short leucine rich-proteoglycans (SLRPs) These SLRPs are biglycan, decorin, fibromodulin, osteoadherin Decorin expression is increased in S. pyogenes-infected human monocytes SLRPs decrease the survival of S. pyogenes in a whole blood model SLRP-mediated bacteria elimination is mediated by complement
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Key Words
- AF647, Alexa Fluor 647
- BSA, bovine serum albumin
- Bacteria
- C4BP, C4b-binding protein
- CFSE, Carboxyfluorescein succinimidyl ester
- Complement
- Cp40, compstatin
- ECM, extracellular matrix
- GAG, glycosaminoglycan
- HI, heat-inactivated
- MAC, membrane attack complex
- NHS, normal human serum
- PMB, polymyxin B
- Pathogenesis
- SLRP, small leucine-rich proteoglycan
- Small leucine-rich proteoglycans
- Streptococcus pyogenes
- TLR, toll-like receptors
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Affiliation(s)
- Lucie Colineau
- Division of Medical Protein Chemistry, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - Maisem Laabei
- Division of Medical Protein Chemistry, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden.,Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
| | - Guanghui Liu
- Division of Medical Protein Chemistry, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - David Ermert
- Division of Medical Protein Chemistry, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - John D Lambris
- Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, USA
| | - Kristian Riesbeck
- Clinical Microbiology, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
| | - Anna M Blom
- Division of Medical Protein Chemistry, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
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16
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Barth M, Selig JI, Klose S, Schomakers A, Kiene LS, Raschke S, Boeken U, Akhyari P, Fischer JW, Lichtenberg A. Degenerative aortic valve disease and diabetes: Implications for a link between proteoglycans and diabetic disorders in the aortic valve. Diab Vasc Dis Res 2019; 16:254-269. [PMID: 30563371 DOI: 10.1177/1479164118817922] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Degenerative aortic valve disease in combination with diabetes is an increasing burden worldwide. There is growing evidence that particularly small leucine-rich proteoglycans are involved in the development of degenerative aortic valve disease. Nevertheless, the role of these molecules in this disease in the course of diabetes has not been elucidated in detail and previous studies remain controversial. Therefore, the aim of this study is to broaden the knowledge about small leucine-rich proteoglycans in degenerative aortic valve disease and the influence of diabetes and hyperglycaemia on aortic valves and valvular interstitial cells is examined. Analyses were performed using reverse-transcription polymerase chain reaction, Western blot, enzyme-linked immunosorbent assay, (immuno)histology and colorimetric assays. We could show that biglycan, but not decorin and lumican, is upregulated in degenerated human aortic valve cusps. Subgroup analysis reveals that upregulation of biglycan is stage-dependent. In vivo, loss of biglycan leads to stage-dependent calcification and also to migratory effects on interstitial cells within the extracellular matrix. In late stages of degenerative aortic valve disease, diabetes increases the expression of biglycan in aortic valves. In vitro, the combinations of hyperglycaemic with pro-degenerative conditions lead to an upregulation of biglycan. In conclusion, biglycan represents a potential link between degenerative aortic valve disease and diabetes.
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Affiliation(s)
- Mareike Barth
- 1 Department of Cardiovascular Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Jessica I Selig
- 1 Department of Cardiovascular Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Svenja Klose
- 1 Department of Cardiovascular Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Antje Schomakers
- 1 Department of Cardiovascular Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Lena S Kiene
- 2 Institute of Pharmacology and Clinical Pharmacology, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Silja Raschke
- 1 Department of Cardiovascular Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Udo Boeken
- 1 Department of Cardiovascular Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Payam Akhyari
- 1 Department of Cardiovascular Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Jens W Fischer
- 2 Institute of Pharmacology and Clinical Pharmacology, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
| | - Artur Lichtenberg
- 1 Department of Cardiovascular Surgery, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University, Düsseldorf, Germany
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17
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Biglycan is a new high-affinity ligand for CD14 in macrophages. Matrix Biol 2019; 77:4-22. [DOI: 10.1016/j.matbio.2018.05.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 02/06/2023]
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18
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Roedig H, Nastase MV, Wygrecka M, Schaefer L. Breaking down chronic inflammatory diseases: the role of biglycan in promoting a switch between inflammation and autophagy. FEBS J 2019; 286:2965-2979. [DOI: 10.1111/febs.14791] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/31/2019] [Accepted: 02/15/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Heiko Roedig
- Pharmazentrum Frankfurt/ZAFES Institut für Allgemeine Pharmakologie und Toxikologie Klinikum der Goethe‐Universität Frankfurt am Main Germany
| | - Madalina Viviana Nastase
- Pharmazentrum Frankfurt/ZAFES Institut für Allgemeine Pharmakologie und Toxikologie Klinikum der Goethe‐Universität Frankfurt am Main Germany
| | - Malgorzata Wygrecka
- Department of Biochemistry Faculty of Medicine Universities of Giessen and Marburg Lung Center Germany
| | - Liliana Schaefer
- Pharmazentrum Frankfurt/ZAFES Institut für Allgemeine Pharmakologie und Toxikologie Klinikum der Goethe‐Universität Frankfurt am Main Germany
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19
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Biglycan evokes autophagy in macrophages via a novel CD44/Toll-like receptor 4 signaling axis in ischemia/reperfusion injury. Kidney Int 2019; 95:540-562. [PMID: 30712922 DOI: 10.1016/j.kint.2018.10.037] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/09/2018] [Accepted: 10/24/2018] [Indexed: 01/14/2023]
Abstract
Biglycan, a small leucine-rich proteoglycan, acts as a danger signal and is classically thought to promote macrophage recruitment via Toll-like receptors (TLR) 2 and 4. We have recently shown that biglycan signaling through TLR 2/4 and the CD14 co-receptor regulates inflammation, suggesting that TLR co-receptors may determine whether biglycan-TLR signaling is pro- or anti-inflammatory. Here, we sought to identify other co-receptors and characterize their impact on biglycan-TLR signaling. We found a marked increase in the number of autophagic macrophages in mice stably overexpressing soluble biglycan. In vitro, stimulation of murine macrophages with biglycan triggered autophagosome formation and enhanced the flux of autophagy markers. Soluble biglycan also promoted autophagy in human peripheral blood macrophages. Using macrophages from mice lacking TLR2 and/or TLR4, CD14, or CD44, we demonstrated that the pro-autophagy signal required TLR4 interaction with CD44, a receptor involved in adhesion, migration, lymphocyte activation, and angiogenesis. In vivo, transient overexpression of circulating biglycan at the onset of renal ischemia/reperfusion injury (IRI) enhanced M1 macrophage recruitment into the kidneys of Cd44+/+ and Cd44-/- mice but not Cd14-/- mice. The biglycan-CD44 interaction increased M1 autophagy and the number of renal M2 macrophages and reduced tubular damage following IRI. Thus, CD44 is a novel signaling co-receptor for biglycan, an interaction that is required for TLR4-CD44-dependent pro-autophagic activity in macrophages. Interfering with the interaction between biglycan and specific TLR co-receptors could represent a promising therapeutic intervention to curtail kidney inflammation and damage.
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20
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Zou W, Wan J, Li M, Xing J, Chen Q, Zhang Z, Gong Y. Small leucine rich proteoglycans in host immunity and renal diseases. J Cell Commun Signal 2018; 13:463-471. [PMID: 30357553 DOI: 10.1007/s12079-018-0489-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/19/2018] [Indexed: 02/03/2023] Open
Abstract
The small leucine rich proteoglycans (SLRPs), structurally consisting of protein cores and various glycosaminoglycan side chains, are grouped into five classes based on common structural and functional properties. Besides being an important structural component of extracellular matrix (ECM), SLRPs have been implicated in the complex network of signal transduction and host immune responses. The focus of this review is on SLRPs in host immunity. Because host immunity plays an important part in the pathogenesis of renal diseases, the role of SLRPs in this set of diseases will also be discussed.
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Affiliation(s)
- Wei Zou
- Department of Infectious Diseases, The 1st Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, China.
| | - Junhui Wan
- Department of Gynecology and Obstetrics, The 1st Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Min Li
- Department of Gynecology and Obstetrics, The 1st Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Juanjuan Xing
- Department of Burn, The 1st Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Qi Chen
- Department of Gynecology and Obstetrics, The 1st Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zhi Zhang
- Department of Gynecology and Obstetrics, The 1st Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yi Gong
- Department of Gynecology and Obstetrics, The 1st Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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21
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Nastase MV, Zeng-Brouwers J, Beckmann J, Tredup C, Christen U, Radeke HH, Wygrecka M, Schaefer L. Biglycan, a novel trigger of Th1 and Th17 cell recruitment into the kidney. Matrix Biol 2018; 68-69:293-317. [DOI: 10.1016/j.matbio.2017.12.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 12/10/2017] [Accepted: 12/10/2017] [Indexed: 12/11/2022]
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22
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Blanchard O, Stepanovska B, Starck M, Erhardt M, Römer I, Meyer Zu Heringdorf D, Pfeilschifter J, Zangemeister-Wittke U, Huwiler A. Downregulation of the S1P Transporter Spinster Homology Protein 2 (Spns2) Exerts an Anti-Fibrotic and Anti-Inflammatory Effect in Human Renal Proximal Tubular Epithelial Cells. Int J Mol Sci 2018; 19:ijms19051498. [PMID: 29772789 PMCID: PMC5983760 DOI: 10.3390/ijms19051498] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 01/09/2023] Open
Abstract
Sphingosine kinase (SK) catalyses the formation of sphingosine 1-phosphate (S1P), which acts as a key regulator of inflammatory and fibrotic reactions, mainly via S1P receptor activation. Here, we show that in the human renal proximal tubular epithelial cell line HK2, the profibrotic mediator transforming growth factor β (TGFβ) induces SK-1 mRNA and protein expression, and in parallel, it also upregulates the expression of the fibrotic markers connective tissue growth factor (CTGF) and fibronectin. Stable downregulation of SK-1 by RNAi resulted in the increased expression of CTGF, suggesting a suppressive effect of SK-1-derived intracellular S1P in the fibrotic process, which is lost when SK-1 is downregulated. In a further approach, the S1P transporter Spns2, which is known to export S1P and thereby reduces intracellular S1P levels, was stably downregulated in HK2 cells by RNAi. This treatment decreased TGFβ-induced CTGF and fibronectin expression, and it abolished the strong induction of the monocyte chemotactic protein 1 (MCP-1) by the pro-inflammatory cytokines tumor necrosis factor (TNF)α and interleukin (IL)-1β. Moreover, it enhanced the expression of aquaporin 1, which is an important water channel that is expressed in the proximal tubules, and reverted aquaporin 1 downregulation induced by IL-1β/TNFα. On the other hand, overexpression of a Spns2-GFP construct increased S1P secretion and it resulted in enhanced TGFβ-induced CTGF expression. In summary, our data demonstrate that in human renal proximal tubular epithelial cells, SK-1 downregulation accelerates an inflammatory and fibrotic reaction, whereas Spns2 downregulation has an opposite effect. We conclude that Spns2 represents a promising new target for the treatment of tubulointerstitial inflammation and fibrosis.
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Affiliation(s)
- Olivier Blanchard
- Institute of Pharmacology, University of Bern, Inselspital, INO-F, CH-3010 Bern, Switzerland.
| | - Bisera Stepanovska
- Institute of Pharmacology, University of Bern, Inselspital, INO-F, CH-3010 Bern, Switzerland.
| | - Manuel Starck
- Institute of Pharmacology, University of Bern, Inselspital, INO-F, CH-3010 Bern, Switzerland.
| | - Martin Erhardt
- Institute of Pharmacology, University of Bern, Inselspital, INO-F, CH-3010 Bern, Switzerland.
| | - Isolde Römer
- Institute of General Pharmacology and Toxicology, University Hospital Frankfurt am Main, Goethe-University, Theodor-Stern Kai 7, D-60590 Frankfurt am Main, Germany.
| | - Dagmar Meyer Zu Heringdorf
- Institute of General Pharmacology and Toxicology, University Hospital Frankfurt am Main, Goethe-University, Theodor-Stern Kai 7, D-60590 Frankfurt am Main, Germany.
| | - Josef Pfeilschifter
- Institute of General Pharmacology and Toxicology, University Hospital Frankfurt am Main, Goethe-University, Theodor-Stern Kai 7, D-60590 Frankfurt am Main, Germany.
| | - Uwe Zangemeister-Wittke
- Institute of Pharmacology, University of Bern, Inselspital, INO-F, CH-3010 Bern, Switzerland.
| | - Andrea Huwiler
- Institute of Pharmacology, University of Bern, Inselspital, INO-F, CH-3010 Bern, Switzerland.
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23
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Nastase MV, Zeng-Brouwers J, Wygrecka M, Schaefer L. Targeting renal fibrosis: Mechanisms and drug delivery systems. Adv Drug Deliv Rev 2018; 129:295-307. [PMID: 29288033 DOI: 10.1016/j.addr.2017.12.019] [Citation(s) in RCA: 163] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/10/2017] [Accepted: 12/22/2017] [Indexed: 12/21/2022]
Abstract
Renal fibrosis is the common outcome of many chronic kidney diseases (CKD) independent of the underlying etiology. Despite a host of promising experimental data, currently available strategies only ameliorate or delay the progression of CKD but do not reverse fibrosis. One of the major impediments of translating novel antifibrotic strategies from bench to bedside is due to the intricacies of the drug delivery process. In this review, we briefly describe mechanisms of renal fibrosis and methods of drug transfer into the kidney. Various tools used in gene therapy to administer nucleic acids in vivo are discussed. Furthermore, we review the modes of action of protein- or peptide-based drugs with target-specific antibodies and cytokines incorporated in hydrogels. Additionally, we assess an intriguing new method to deliver drugs specifically to tubular epithelial cells via conjugation with ligands binding to the megalin receptor. Finally, plant-derived compounds with antifibrotic properties are also summarized.
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Affiliation(s)
- Madalina V Nastase
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany; National Institute for Chemical-Pharmaceutical Research and Development, 112 Vitan Avenue, 031299 Bucharest, Romania
| | - Jinyang Zeng-Brouwers
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany
| | - Malgorzata Wygrecka
- Department of Biochemistry, Faculty of Medicine, Universities of Giessen and Marburg Lung Center, Friedrichstrasse 24, 35392 Giessen, Germany.
| | - Liliana Schaefer
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Goethe-Universität, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
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24
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Avenoso A, D'Ascola A, Scuruchi M, Mandraffino G, Calatroni A, Saitta A, Campo S, Campo GM. The proteoglycan biglycan mediates inflammatory response by activating TLR-4 in human chondrocytes: Inhibition by specific siRNA and high polymerized Hyaluronan. Arch Biochem Biophys 2018; 640:75-82. [PMID: 29339093 DOI: 10.1016/j.abb.2018.01.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 01/08/2018] [Accepted: 01/10/2018] [Indexed: 02/07/2023]
Abstract
Cartilage degeneration are hallmarks of wear, tear, mechanical and inflammatory damage of the joint cartilage. Tissue degradation as well as compromising the integrity and function of the organ, produces different intermediates, directly able to stimulate further inflammatory effect, therefore, amplifying the inflammation response. Biglycan is a soluble component of the extracellular matrix that is released during tissue injury. It has been reported that released biglycan is an endogenous ligand for TLR-2/4 in some cell type. We studied the role of biglycan in an experimental model of biglycan-induced inflammatory response in human chondrocytes and the effect of high polymerized HA on reducing its activity. Exposition of chondrocytes to LPS generated cell injury, including high levels of biglycan. Chondrocyte treatment with biglycan produces a high mRNA expression of several detrimental inflammation mediators such as IL-1β, IL-6, MMP-13, and IL-17, as well as NF-kB and TLR-4 activation. Administration of high polymerized HA to chondrocytes exposed to biglycan was able to attenuate the inflammatory response by decreasing the expression of the inflammatory mediators. Involvement of the TLR-4 in the mediation of the biglycan action was confirmed using a specific silent agent (siRNA). Taken together, these data could be used to develop new anti-inflammatory approaches.
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Affiliation(s)
- Angela Avenoso
- Department of Biomedical and Dental Sciences and Morphofunctional Images, Policlinico Universitario, University of Messina, 98125 Messina, Italy
| | - Angela D'Ascola
- Department of Clinical and Experimental Medicine, University of Messina, Policlinico Universitario, 98125 Messina, Italy
| | - Michele Scuruchi
- Department of Clinical and Experimental Medicine, University of Messina, Policlinico Universitario, 98125 Messina, Italy
| | - Giuseppe Mandraffino
- Department of Clinical and Experimental Medicine, University of Messina, Policlinico Universitario, 98125 Messina, Italy
| | - Alberto Calatroni
- Department of Clinical and Experimental Medicine, University of Messina, Policlinico Universitario, 98125 Messina, Italy
| | - Antonino Saitta
- Department of Clinical and Experimental Medicine, University of Messina, Policlinico Universitario, 98125 Messina, Italy
| | - Salvatore Campo
- Department of Biomedical and Dental Sciences and Morphofunctional Images, Policlinico Universitario, University of Messina, 98125 Messina, Italy
| | - Giuseppe M Campo
- Department of Clinical and Experimental Medicine, University of Messina, Policlinico Universitario, 98125 Messina, Italy.
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25
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Huwiler A, Pfeilschifter J. Sphingolipid signaling in renal fibrosis. Matrix Biol 2018; 68-69:230-247. [PMID: 29343457 DOI: 10.1016/j.matbio.2018.01.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 01/08/2018] [Accepted: 01/08/2018] [Indexed: 12/28/2022]
Abstract
Over the last decade, various sphingolipid subspecies have gained increasing attention as important signaling molecules that regulate a multitude of physiological and pathophysiological processes including inflammation and tissue remodeling. These mediators include ceramide, sphingosine 1-phosphate (S1P), the cerebroside glucosylceramide, lactosylceramide, and the gangliosides GM3 and Gb3. These lipids have been shown to accumulate in various chronic kidney diseases that typically end in renal fibrosis and ultimately renal failure. This review will summarize the effects and contributions of those enzymes that regulate the generation and interconversion of these lipids, notably the acid sphingomyelinase, the acid sphingomyelinase-like protein SMPDL3B, the sphingosine kinases, the S1P lyase, the glucosylceramide synthase, the GM3 synthase, and the α-galactosidase A, to renal fibrotic diseases. Strategies of manipulating these enzymes for therapeutic purposes and the impact of existing drugs on renal pathologies will be discussed.
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Affiliation(s)
- Andrea Huwiler
- Institute of Pharmacology, University of Bern, Inselspital INO-F, CH-3010 Bern, Switzerland.
| | - Josef Pfeilschifter
- Institute of General Pharmacology and Toxicology, University Hospital Frankfurt, Goethe- University, Frankfurt am Main, Germany
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26
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Nastase MV, Janicova A, Roedig H, Hsieh LTH, Wygrecka M, Schaefer L. Small Leucine-Rich Proteoglycans in Renal Inflammation: Two Sides of the Coin. J Histochem Cytochem 2018; 66:261-272. [PMID: 29290137 DOI: 10.1369/0022155417738752] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
It is now well-established that members of the small leucine-rich proteoglycan (SLRP) family act in their soluble form, released proteolytically from the extracellular matrix (ECM), as danger-associated molecular patterns (DAMPs). By interacting with Toll-like receptors (TLRs) and the inflammasome, the two SLRPs, biglycan and decorin, autonomously trigger sterile inflammation. Recent data indicate that these SLRPs, besides their conventional role as pro-inflammatory DAMPs, additionally trigger anti-inflammatory signaling pathways to tightly control inflammation. This is brought about by selective employment of TLRs, their co-receptors, various adaptor molecules, and through crosstalk between SLRP-, reactive oxygen species (ROS)-, and sphingolipid-signaling. In this review, the complexity of SLRP signaling in immune and kidney resident cells and its relevance for renal inflammation is discussed. We propose that the dichotomy in SLRP signaling (pro- and anti-inflammatory) allows for fine-tuning the inflammatory response, which is decisive for the outcome of inflammatory kidney diseases.
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Affiliation(s)
- Madalina V Nastase
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der JW Goethe-Universität Frankfurt am Main, Germany.,National Institute for Chemical-Pharmaceutical Research and Development, Bucharest, Romania
| | - Andrea Janicova
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der JW Goethe-Universität Frankfurt am Main, Germany
| | - Heiko Roedig
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der JW Goethe-Universität Frankfurt am Main, Germany
| | - Louise Tzung-Harn Hsieh
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der JW Goethe-Universität Frankfurt am Main, Germany
| | - Malgorzata Wygrecka
- Department of Biochemistry, Faculty of Medicine, Universities of Giessen and Marburg Lung Center, Giessen, Germany
| | - Liliana Schaefer
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der JW Goethe-Universität Frankfurt am Main, Germany
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27
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Frevert CW, Felgenhauer J, Wygrecka M, Nastase MV, Schaefer L. Danger-Associated Molecular Patterns Derived From the Extracellular Matrix Provide Temporal Control of Innate Immunity. J Histochem Cytochem 2018; 66:213-227. [PMID: 29290139 DOI: 10.1369/0022155417740880] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
It is evident that components of the extracellular matrix (ECM) act as danger-associated molecular patterns (DAMPs) through direct interactions with pattern recognition receptors (PRRs) including Toll-like receptors (TLRs) and inflammasomes. Through these interactions, ECM-derived DAMPs autonomously trigger sterile inflammation or prolong pathogen-induced responses through the production of proinflammatory mediators and the recruitment of leukocytes to sites of injury and infection. Recent research, however, suggests that ECM-derived DAMPs are additionally involved in the resolution and fine-tuning of inflammation by orchestrating the production of anti-inflammatory mediators that are required for the resolution of tissue inflammation and the transition to acquired immunity. Thus, in this review, we discuss the current knowledge of the interplay between ECM-derived DAMPs and the innate immune signaling pathways that are activated to provide temporal control of innate immunity.
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Affiliation(s)
- Charles W Frevert
- Center for Lung Biology, University of Washington, Seattle, Washington
| | | | - Malgorzata Wygrecka
- Department of Biochemistry, Faculty of Medicine, Universities of Giessen and Marburg Lung Center, Giessen, Germany
| | - Madalina V Nastase
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Frankfurt am Main, Germany.,National Institute for Chemical-Pharmaceutical Research and Development, Bucharest, Romania
| | - Liliana Schaefer
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Frankfurt am Main, Germany
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28
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Vutukuri R, Brunkhorst R, Kestner RI, Hansen L, Bouzas NF, Pfeilschifter J, Devraj K, Pfeilschifter W. Alteration of sphingolipid metabolism as a putative mechanism underlying LPS-induced BBB disruption. J Neurochem 2017; 144:172-185. [PMID: 29023711 DOI: 10.1111/jnc.14236] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 09/24/2017] [Accepted: 09/25/2017] [Indexed: 12/31/2022]
Abstract
Septic encephalopathy with confusion and agitation occurs early during sepsis and contributes to the severity of the disease. A decrease in the sphingosine-1-phosphate (S1P) blood levels has been shown in patients and in animal models of sepsis. The lipid mediator S1P is known to be involved in endothelial barrier function in a context-dependent manner. We utilized lipopolysaccharide (LPS)-injected mice as a model for septic encephalopathy and first performed tracer permeability assays to assess the blood-brain barrier (BBB) breakdown in vivo. At time points corresponding to the BBB breakdown post LPS injection, we aimed to characterize the regulation of the sphingolipid signaling pathway at the BBB during sepsis. We measured sphingolipid concentrations in blood, in mouse brain microvessels (MBMVs), and brain tissue. We also analyzed the expression of S1P receptors, transporters, and metabolizing enzymes in MBMVs and brain tissue. Primary mouse brain microvascular endothelial cells (MBMECs) were isolated to evaluate the effects of LPS on transendothelial electrical resistance (TEER) as a measure of permeability in vitro. We observed a relevant decrease in S1P levels after LPS injection in all three compartments (blood, MBMVs, brain tissue) that was accompanied by an increased expression of the S1P receptor type 1 and of sphingosine kinase 1 on one hand and of the S1P degrading enzymes lipid phosphate phosphatase 1 (LPP1) and S1P phosphatase 1 on the other hand, as well as a down-regulation of sphingosine kinase 2. Application of LPS to a monolayer of primary MBMECs did not alter TEER, but serum from LPS-treated mice lead to a breakdown of the barrier compared to serum from vehicle-treated mice. We observed profound alterations of the sphingolipid metabolism at the BBB after LPS injection that point toward a therapeutic potential of drugs interfering with this pathway as novel approach for the detrimental overwhelming immune response in sepsis. Read the Editorial Highlight for this article on page 115. Cover Image for this Issue: doi. 10.1111/jnc.14161.
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Affiliation(s)
- Rajkumar Vutukuri
- Pharmazentrum Frankfurt, Institute for General Pharmacology and Toxicology, Goethe University, Frankfurt, Germany
| | - Robert Brunkhorst
- Department of Neurology, University Hospital Frankfurt and Goethe University, Frankfurt, Germany
| | - Roxane-Isabelle Kestner
- Department of Neurology, University Hospital Frankfurt and Goethe University, Frankfurt, Germany
| | - Lena Hansen
- Pharmazentrum Frankfurt, Institute for General Pharmacology and Toxicology, Goethe University, Frankfurt, Germany
| | - Nerea Ferreiros Bouzas
- Pharmazentrum Frankfurt, Institute for Clinical Pharmacology, Goethe University, Frankfurt, Germany
| | - Josef Pfeilschifter
- Pharmazentrum Frankfurt, Institute for General Pharmacology and Toxicology, Goethe University, Frankfurt, Germany
| | - Kavi Devraj
- Pharmazentrum Frankfurt, Institute for General Pharmacology and Toxicology, Goethe University, Frankfurt, Germany.,Edinger Institute of Neurology, University Hospital Frankfurt, Goethe University, Frankfurt, Germany
| | - Waltraud Pfeilschifter
- Department of Neurology, University Hospital Frankfurt and Goethe University, Frankfurt, Germany
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29
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Nastase MV, Janicova A, Wygrecka M, Schaefer L. Signaling at the Crossroads: Matrix-Derived Proteoglycan and Reactive Oxygen Species Signaling. Antioxid Redox Signal 2017; 27:855-873. [PMID: 28510506 DOI: 10.1089/ars.2017.7165] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
SIGNIFICANCE Proteoglycans (PGs), besides their structural contribution, have emerged as dynamic components that mediate a multitude of cellular events. The various roles of PGs are attributed to their structure, spatial localization, and ability to act as ligands and receptors. Reactive oxygen species (ROS) are small mediators that are generated in physiological and pathological conditions. Besides their reactivity and ability to induce oxidative stress, a growing body of data suggests that ROS signaling is more relevant than direct radical damage in development of human pathologies. Recent Advances: Cell surface transmembrane PGs (syndecans, cluster of differentiation 44) represent receptors in diverse and complex transduction networks, which involve redox signaling with implications in cancer, fibrosis, renal dysfunction, or Alzheimer's disease. Through NADPH oxidase (NOX)-dependent ROS, the extracellular PG, hyaluronan is involved in osteoclastogenesis and cancer. The ROS sources, NOX1 and NOX4, increase biglycan-induced inflammation, while NOX2 is a negative regulator. CRITICAL ISSUES The complexity of the mechanisms that bring ROS into the light of PG biology might be the foundation of a new research area with significant promise for understanding health and disease. Important aspects need to be investigated in PG/ROS signaling: the discovery of specific targets of ROS, the precise ROS-induced chemical modifications of these targets, and the study of their pathological relevance. FUTURE DIRECTIONS As we become more and more aware of the interactions between PG and ROS signaling underlying intracellular communication and cell fate decisions, it is quite conceivable that this field will allow to identify new therapeutic targets.-Antioxid. Redox Signal. 27, 855-873.
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Affiliation(s)
- Madalina-Viviana Nastase
- 1 Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Goethe Universität , Frankfurt am Main, Germany .,2 National Institute for Chemical-Pharmaceutical Research and Development , Bucharest, Romania
| | - Andrea Janicova
- 1 Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Goethe Universität , Frankfurt am Main, Germany
| | - Malgorzata Wygrecka
- 3 Department of Biochemistry, Faculty of Medicine, Justus Liebig University , Giessen, Germany
| | - Liliana Schaefer
- 1 Pharmazentrum Frankfurt, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Goethe Universität , Frankfurt am Main, Germany
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