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Boutin L, Roger E, Gayat E, Depret F, Blot-Chabaud M, Chadjichristos CE. The role of CD146 in renal disease: from experimental nephropathy to clinics. J Mol Med (Berl) 2024; 102:11-21. [PMID: 37993561 DOI: 10.1007/s00109-023-02392-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/10/2023] [Accepted: 10/24/2023] [Indexed: 11/24/2023]
Abstract
Vascular endothelial dysfunction is a major risk factor in the development of renal diseases. Recent studies pointed out a major interest for the inter-endothelial junction protein CD146, as its expression is modulated during renal injury. Indeed, some complex mechanisms involving this adhesion molecule and its multiple ligands are observed in a large number of renal diseases in fundamental or clinical research. The purpose of this review is to summarize the most recent literature on the role of CD146 in renal pathophysiology, from experimental nephropathy to clinical trials.
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Affiliation(s)
- Louis Boutin
- FHU PROMICE AP-HP, Saint Louis and DMU Parabol, Critical Care Medicine and Burn Unit, AP-HP, Department of Anesthesiology, University Paris Cité, 75010, Paris, France
- INSERM, UMR-942, MASCOT, Cardiovascular Markers in Stress Condition, University Paris Cité, 75010, Paris, France
- INSERM, UMR-S1155, Bâtiment Recherche, Tenon Hospital, 4 rue de la Chine, 75020, Paris, France
| | - Elena Roger
- INSERM, UMR-S1155, Bâtiment Recherche, Tenon Hospital, 4 rue de la Chine, 75020, Paris, France
- Faculty of Medicine, Sorbonne University, 75013, Paris, France
| | - Etienne Gayat
- FHU PROMICE AP-HP, Saint Louis and DMU Parabol, Critical Care Medicine and Burn Unit, AP-HP, Department of Anesthesiology, University Paris Cité, 75010, Paris, France
- INSERM, UMR-942, MASCOT, Cardiovascular Markers in Stress Condition, University Paris Cité, 75010, Paris, France
| | - François Depret
- FHU PROMICE AP-HP, Saint Louis and DMU Parabol, Critical Care Medicine and Burn Unit, AP-HP, Department of Anesthesiology, University Paris Cité, 75010, Paris, France
- INSERM, UMR-942, MASCOT, Cardiovascular Markers in Stress Condition, University Paris Cité, 75010, Paris, France
| | | | - Christos E Chadjichristos
- INSERM, UMR-S1155, Bâtiment Recherche, Tenon Hospital, 4 rue de la Chine, 75020, Paris, France.
- Faculty of Medicine, Sorbonne University, 75013, Paris, France.
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Yuan X, Shen G, Xiao H, Wang Z, Ma Y, Qin X. Netrin-1 and RGMa: Novel Regulators of Atherosclerosis-Related Diseases. Cardiovasc Drugs Ther 2023:10.1007/s10557-023-07478-5. [PMID: 37439909 DOI: 10.1007/s10557-023-07478-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/26/2023] [Indexed: 07/14/2023]
Abstract
BACKGROUNDS Neuronal guidance proteins (NGPs) have been demonstrated to guide the elongation of neuronal axonal growth cones in the developing central nervous system. Non-neuronal functions of NGPs have also been described, especially in relation to atherosclerosis. FINDINGS Netrin-1 and repulsive guidance molecule a (RGMa) are NGPs that have been shown to regulate endothelial cell adhesion and angiogenesis, macrophage migration and apoptosis, smooth muscle cells (SMCs) phenotypic dedifferentiation and mobility, chemokine activities, and inflammatory responses during atherosclerosis initiation and progression. PURPOSES However, mechanistic studies have generated controversy about the specific role of Netrin-1 in atherosclerosis due to the diversity of its structure, receptors and cell sources, and the actions of RGMa in atherosclerosis have not been reported in previous reviews. Therefore, the current work reviews the evidence for roles of Netrin-1 and RGMa in the initiation and progression of atherosclerosis and discusses potential therapeutic targets in the future.
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Affiliation(s)
- Xiaofan Yuan
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1 Yixueyuan Road, Chongqing, Yuzhong District, China
| | - Guanru Shen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1 Yixueyuan Road, Chongqing, Yuzhong District, China
| | - Hongmei Xiao
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1 Yixueyuan Road, Chongqing, Yuzhong District, China
| | - Zijie Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1 Yixueyuan Road, Chongqing, Yuzhong District, China
| | - Yue Ma
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1 Yixueyuan Road, Chongqing, Yuzhong District, China
| | - Xinyue Qin
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, 1 Yixueyuan Road, Chongqing, Yuzhong District, China.
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Zheng B, Li S, Xiang Y, Zong W, Ma Q, Wang S, Wu H, Song H, Ren H, Chen J, Liu J, Zhao F. Netrin-1 mediates nerve innervation and angiogenesis leading to discogenic pain. J Orthop Translat 2022; 39:21-33. [PMID: 36605621 PMCID: PMC9804017 DOI: 10.1016/j.jot.2022.11.006] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 09/16/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
Objective Discogenic low back pain (LBP) is associated with nociceptive nerve fibers that grow into degenerated intervertebral discs (IVD) but the etiopathogenesis of disease is not fully understood. The purpose of this study was to clarify the role of Netrin-1 in causing discogenic LBP. Methods The level of nociceptive nerve innervation was examined in disc degenerative patients and rat needle-punctured models by immunohistochemistry. Nucleus pulposus (NP) cells were isolated from IVD tissues of rats and induced degeneration by interleukin-1β (IL-1β) or tumor necrosis factor α (TNFα). The candidate genes related to neuron outgrowth and migration were selected by Next-generation sequencing (NGS). CRISPR/Cas9 was used to knockdown Netrin-1 in NP cells. The impact of Netrin-1 on nerve innervation were evaluated with P2X2、NF200 staining and microfluidics assay. Meanwhile the CD31 staining and transwell assay were used to evaluate the impact of Netrin-1 in angiogenesis. The proteins and RNA extracted from NP cells related to catabolism and anabolism were examined by western blot assay and RT-qPCR experiment. ChIP and luciferase experiments were used to assess the intracellular transcriptional regulation of Netrin-1. Further, a needle-punctured rat model followed by histomorphometry and immunofluorescence histochemistry was used to explore the potential effect of Netrin-1 on LBP in vivo. Results The level of nerve innervation was increased in severe disc degenerative patients while the expression of Netrin-1 was upregulated. The supernatants of NP cells stimulated with IL-1β or TNFα containing more Netrin-1 could promote axon growth and vascular endothelial cells migration. Knocking down Netrin-1 or overexpressing transcription factor TCF3 as a negative regulator of Netrin-1 attenuated this effect. The needle-punctured rat model brought significant spinal hypersensitivity, nerve innervation and angiogenesis, nevertheless knocking down Netrin-1 effectively prevented disc degeneration-induced adverse impacts. Conclusion Discogenic LBP was induced by Netrin-1, which mediated nerve innervation and angiogenesis in disc degeneration. Knocking down Netrin-1 by CRISPR/Cas9 or negatively regulating Netrin1 by transcription factor TCF3 could alleviate spinal hypersensitivity. The translational potential of this article This study on Netrin-1 could provide a new target and theoretical basis for the prevention and treatment for discogenic back pain.
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Affiliation(s)
- Bingjie Zheng
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China
| | - Shengwen Li
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, 215003, Suzhou, Jiangsu, China,Second Department of Orthopaedics Haining People's Hospital, Jiaxing, Zhejiang, 314400, China
| | - Yufeng Xiang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China
| | - Wentian Zong
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China
| | - Qingliang Ma
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China
| | - Shiyu Wang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China
| | - Haihao Wu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China,Department of Orthopedics, Hwa Mei Hospital, University of Chinese Academy of Sciences, No. 41 Northwest Street, Ningbo, Zhejiang, 315010, China
| | - Haixin Song
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China
| | - Hong Ren
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China
| | - Jian Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China
| | - Junhui Liu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China,Corresponding author. Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China.
| | - Fengdong Zhao
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, 310027, China,Corresponding author. Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310027, China.
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Ibrahim WW, Sayed RH, Kandil EA, Wadie W. Niacin mitigates blood-brain barrier tight junctional proteins dysregulation and cerebral inflammation in ketamine rat model of psychosis: Role of GPR109A receptor. Prog Neuropsychopharmacol Biol Psychiatry 2022; 119:110583. [PMID: 35690118 DOI: 10.1016/j.pnpbp.2022.110583] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/05/2022] [Accepted: 06/05/2022] [Indexed: 01/25/2023]
Abstract
Dysregulated inflammatory responses and blood-brain barrier (BBB) dysfunction are recognized as central factors in the development of psychiatric disorders. The present study was designed to evaluate the effect of niacin on BBB integrity in ketamine-induced model of psychosis. Meanwhile, mepenzolate bromide (MPN), a GPR109A receptor blocker, was used to investigate the role of this receptor on the observed niacin's effect. Male Wistar rats received ketamine (30 mg/kg/day, i.p) for 5 consecutive days and then niacin (40 mg/kg/day, p.o), with or without MPN (5 mg/kg/day, i.p), was given for the subsequent 15 days. Three days before the end of experiment, rats were behaviorally tested using open field, novel object recognition, social interaction, and forced swimming tests. Niacin significantly ameliorated ketamine-induced behavioral deficits, amended gamma aminobutyric acid and glutamate concentration, decreased tumor necrosis factor-α and matrix metallopeptidase 9 levels, and increased netrin-1 contents in the hippocampus of rats. Niacin also augmented the hippocampal expression of ZO-1, occludin, and claudin-5 proteins, indicating the ability of niacin to restore the BBB integrity. Moreover, the histopathologic changes in hippocampal neurons were alleviated. Since all the beneficial effects of niacin in the present investigation were partially abolished by the co-administration of MPN; GPR109A receptor was proven to partially mediate the observed antipsychotic effects of niacin. These data revealed that GPR109A-mediated signaling pathways might represent potential targets for therapeutic interventions to prevent or slow the progression of psychosis.
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Affiliation(s)
- Weam W Ibrahim
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt
| | - Rabab H Sayed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt.
| | - Esraa A Kandil
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt
| | - Walaa Wadie
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt
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Signaling Pathways Involved in Myocardial Ischemia-Reperfusion Injury and Cardioprotection: A Systematic Review of Transcriptomic Studies in Sus scrofa. J Cardiovasc Dev Dis 2022; 9:jcdd9050132. [PMID: 35621843 PMCID: PMC9145716 DOI: 10.3390/jcdd9050132] [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: 03/30/2022] [Revised: 04/20/2022] [Accepted: 04/21/2022] [Indexed: 11/17/2022] Open
Abstract
Myocardial damage in acute myocardial infarctions (AMI) is primarily the result of ischemia−reperfusion injury (IRI). Recognizing the timing of transcriptional events and their modulation by cardioprotective strategies is critical to address the pathophysiology of myocardial IRI. Despite the relevance of pigs for translational studies of AMI, only a few have identified how transcriptomic changes shape cellular signaling pathways in response to injury. We systematically reviewed transcriptomic studies of myocardial IRI and cardioprotection in Sus scrofa. Gene expression datasets were analyzed for significantly enriched terms using the Enrichr analysis tool, and statistically significant results (adjusted p-values of <0.05) for Signaling Pathways, Transcription Factors, Molecular Functions, and Biological Processes were compared between eligible studies to describe how these dynamic changes transform the myocardium from an injured and inflamed tissue into a scar. Then, we address how cardioprotective interventions distinctly modulate the myocardial transcriptome and discuss the implications of uncovering gene regulatory networks for cardiovascular pathologies and translational applications.
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Association between serum netrin-1, netrin-4 and risk of the acute coronary syndrome in patients with type 2 diabetes mellitus-A pilot study. Indian Heart J 2021; 74:72-75. [PMID: 34875255 PMCID: PMC8891007 DOI: 10.1016/j.ihj.2021.11.186] [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: 06/04/2021] [Revised: 09/28/2021] [Accepted: 11/30/2021] [Indexed: 11/20/2022] Open
Abstract
The present study was done to assess the diagnostic utility of serum netrin-1 and netrin-4 for recognising the acute coronary syndrome (ACS) in type 2 diabetes mellitus (T2DM) patients. Forty-two T2DM patients with ACS (Cases) and forty-two T2DM patients without ACS (Controls) were compared. Cases had lower serum netrin-1 and netrin-4 levels than controls and were negatively associated with creatinine kinase-total, creatinine kinase-MB, troponin-T and H-FABP. ROC analysis showed that netrin-1 and netrin-4 had good sensitivity and specificity for ACS prediction in T2DM patients. Serum netrin-1 and netrin-4 levels might be considered complementary markers for ACS diagnosis in T2DM patients.
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Franzè E, Marafini I, Troncone E, Salvatori S, Monteleone G. Interleukin-34 promotes tumorigenic signals for colon cancer cells. Cell Death Discov 2021; 7:245. [PMID: 34535634 PMCID: PMC8448832 DOI: 10.1038/s41420-021-00636-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/14/2021] [Accepted: 05/29/2021] [Indexed: 12/15/2022] Open
Abstract
Colorectal carcinoma (CRC) is one of the most common forms of malignancy in the Western world. Accumulating evidence indicates that colon carcinogenesis is tightly controlled by tumour-associated immune cells and stromal cells, which can either stimulate or suppress CRC cell growth and survival, mainly via the production of cytokines. Interleukin-34 (IL-34), a cytokine known to regulate mainly monocyte/macrophage survival and function, is highly produced within the CRC microenvironment by several cell types, including cancer cells, tumour-associated macrophages (TAMs) and cancer-associated fibroblasts (CAFs), and regulates the pro-tumoural functions of such cells. In this article, we summarize the available data supporting the multiple effects of IL-34 in human CRC.
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Affiliation(s)
- Eleonora Franzè
- Department of Systems Medicine, University of Rome "TOR VERGATA", Rome, Italy
| | - Irene Marafini
- Department of Systems Medicine, University of Rome "TOR VERGATA", Rome, Italy
| | - Edoardo Troncone
- Department of Systems Medicine, University of Rome "TOR VERGATA", Rome, Italy
| | - Silvia Salvatori
- Department of Systems Medicine, University of Rome "TOR VERGATA", Rome, Italy
| | - Giovanni Monteleone
- Department of Systems Medicine, University of Rome "TOR VERGATA", Rome, Italy.
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The Entry and Egress of Monocytes in Atherosclerosis: A Biochemical and Biomechanical Driven Process. Cardiovasc Ther 2021; 2021:6642927. [PMID: 34345249 PMCID: PMC8282391 DOI: 10.1155/2021/6642927] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 06/28/2021] [Indexed: 12/24/2022] Open
Abstract
In accordance with “the response to injury” theory, the entry of monocytes into the intima guided by inflammation signals, taking up cholesterol and transforming into foam cells, and egress from plaques determines the progression of atherosclerosis. Multiple cytokines and receptors have been reported to be involved in monocyte recruitment such as CCL2/CCR2, CCL5/CCR5, and CX3CL1/CX3CR1, and the egress of macrophages from the plaque like CCR7/CCL19/CCL21. Interestingly, some neural guidance molecules such as Netrin-1 and Semaphorin 3E have been demonstrated to show an inhibitory effect on monocyte migration. During the processes of monocytes recruitment and migration, factors affecting the biomechanical properties (e.g., the membrane fluidity, the deformability, and stiffness) of the monocytes, like cholesterol, amyloid-β peptide (Aβ), and lipopolysaccharides (LPS), as well as the biomechanical environment that the monocytes are exposed, like the extracellular matrix stiffness, mechanical stretch, blood flow, and hypertension, were discussed in the latter section. Till now, several small interfering RNAs (siRNAs), monoclonal antibodies, and antagonists for CCR2 have been designed and shown promising efficiency on atherosclerosis therapy. Seeking more possible biochemical factors that are chemotactic or can affect the biomechanical properties of monocytes, and uncovering the underlying mechanism, will be helpful in future studies.
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Li J, Conrad C, Mills TW, Berg NK, Kim B, Ruan W, Lee JW, Zhang X, Yuan X, Eltzschig HK. PMN-derived netrin-1 attenuates cardiac ischemia-reperfusion injury via myeloid ADORA2B signaling. J Exp Med 2021; 218:212023. [PMID: 33891683 PMCID: PMC8077173 DOI: 10.1084/jem.20210008] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/26/2021] [Accepted: 03/19/2021] [Indexed: 01/03/2023] Open
Abstract
Previous studies implicated the neuronal guidance molecule netrin-1 in attenuating myocardial ischemia-reperfusion injury. However, the tissue-specific sources and receptor signaling events remain elusive. Neutrophils are among the first cells responding to an ischemic insult and can be associated with tissue injury or rescue. We found netrin-1 levels were elevated in the blood of patients with myocardial infarction, as well as in mice exposed to myocardial ischemia-reperfusion. Selectively increased infarct sizes and troponin levels were found in Ntn1loxP/loxP Lyz2 Cre+ mice, but not in mice with conditional netrin-1 deletion in other tissue compartments. In vivo studies using neutrophil depletion identified neutrophils as the main source for elevated blood netrin-1 during myocardial injury. Finally, pharmacologic studies using treatment with recombinant netrin-1 revealed a functional role for purinergic signaling events through the myeloid adenosine A2b receptor in mediating netrin-1-elicited cardioprotection. These findings suggest an autocrine signaling loop with a functional role for neutrophil-derived netrin-1 in attenuating myocardial ischemia-reperfusion injury through myeloid adenosine A2b signaling.
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Affiliation(s)
- Jiwen Li
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX.,Department of Cardiac Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Catharina Conrad
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX.,Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Münster, Germany
| | - Tingting W Mills
- Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center at Houston, Houston, TX
| | - Nathaniel K Berg
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX
| | - Boyun Kim
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX
| | - Wei Ruan
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX.,Department of Anesthesiology, Second Xiangya Hospital, Central South University, Hunan, China
| | - Jae W Lee
- Department of Anesthesiology, Yale University School of Medicine, New Haven, CT
| | - Xu Zhang
- Center for Clinical and Translational Sciences, The University of Texas Health Science Center at Houston, Houston, TX
| | - Xiaoyi Yuan
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX
| | - Holger K Eltzschig
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX
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Interleukin-34 Enhances the Tumor Promoting Function of Colorectal Cancer-Associated Fibroblasts. Cancers (Basel) 2020; 12:cancers12123537. [PMID: 33260828 PMCID: PMC7761053 DOI: 10.3390/cancers12123537] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/20/2020] [Accepted: 11/24/2020] [Indexed: 12/24/2022] Open
Abstract
The stromal compartment of colorectal cancer (CRC) is marked by the presence of large numbers of fibroblasts, termed cancer-associated fibroblasts (CAFs), which promote CRC growth and progression through the synthesis of various molecules targeting the neoplastic cells. Interleukin (IL)-34, a cytokine over-produced by CRC cells, stimulates CRC cell growth. Since IL-34 also regulates the function of inflammatory fibroblasts, we hypothesized that it could regulate the tumor promoting function of colorectal CAFs. By immunostaining and real-time PCR, we initially showed that IL-34 was highly produced by CAFs and to lesser extent by normal fibroblasts isolated from non-tumoral colonic mucosa of CRC patients. CAFs and normal fibroblasts expressed the functional receptors of IL-34. IL-34 induced normal fibroblasts to express α-SMA, vimentin and fibroblast activation protein and enhanced fibroblast growth, thus generating a cellular phenotype resembling that of CAFs. Consistently, knockdown of IL-34 in CAFs with an antisense oligonucleotide (AS) decreased expression of such markers and inhibited cell proliferation. Co-culture of CRC cells with IL-34 AS-treated CAFs supernatants resulted in less cancer cell proliferation and migration. Among CAF-derived molecules known to promote CRC cell growth/migration, only netrin-1 and basic-fibroblast growth factor were induced by IL-34. Data suggest a role for IL-34 in the control of colorectal CAF function.
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11
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Wang Z, Xu Q, Zhang N, Du X, Xu G, Yan X. CD146, from a melanoma cell adhesion molecule to a signaling receptor. Signal Transduct Target Ther 2020; 5:148. [PMID: 32782280 PMCID: PMC7421905 DOI: 10.1038/s41392-020-00259-8] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/14/2020] [Accepted: 06/18/2020] [Indexed: 12/11/2022] Open
Abstract
CD146 was originally identified as a melanoma cell adhesion molecule (MCAM) and highly expressed in many tumors and endothelial cells. However, the evidence that CD146 acts as an adhesion molecule to mediate a homophilic adhesion through the direct interactions between CD146 and itself is still lacking. Recent evidence revealed that CD146 is not merely an adhesion molecule, but also a cellular surface receptor of miscellaneous ligands, including some growth factors and extracellular matrixes. Through the bidirectional interactions with its ligands, CD146 is actively involved in numerous physiological and pathological processes of cells. Overexpression of CD146 can be observed in most of malignancies and is implicated in nearly every step of the development and progression of cancers, especially vascular and lymphatic metastasis. Thus, immunotherapy against CD146 would provide a promising strategy to inhibit metastasis, which accounts for the majority of cancer-associated deaths. Therefore, to deepen the understanding of CD146, we review the reports describing the newly identified ligands of CD146 and discuss the implications of these findings in establishing novel strategies for cancer therapy.
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Affiliation(s)
- Zhaoqing Wang
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, 100101, Beijing, China.
| | - Qingji Xu
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, 100101, Beijing, China
- College of Life Science, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Nengwei Zhang
- Department of Gastrointestinal Hepatobiliary Tumor Surgery, Beijing Shijitan Hospital, Capital Medical University, 100038, Beijing, China
| | - Xuemei Du
- Departments of Pathology, Beijing Shijitan Hospital, Capital Medical University, 100038, Beijing, China
| | - Guangzhong Xu
- Department of Gastrointestinal Hepatobiliary Tumor Surgery, Beijing Shijitan Hospital, Capital Medical University, 100038, Beijing, China
| | - Xiyun Yan
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, 100101, Beijing, China.
- College of Life Science, University of Chinese Academy of Sciences, 100049, Beijing, China.
- Nanozyme Medical Center, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China.
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12
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Wu G, Wang Z, Shan P, Huang S, Lin S, Huang W, Huang Z. Suppression of Netrin-1 attenuates angiotension II-induced cardiac remodeling through the PKC/MAPK signaling pathway. Biomed Pharmacother 2020; 130:110495. [PMID: 32688140 DOI: 10.1016/j.biopha.2020.110495] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Myocardial remodeling caused by angiotensin II (Ang II) is essential for the pathological process of heart failure. Netrin-1, which is an axonal guidance cue, has been shown to be involved in the inflammatory response, tumorigenesis, and angiogenesis in non-neuronal tissues. However, the role of Netrin-1 in cardiac remodeling has not been fully elucidated. METHODS The rat cardiomyocyte cell line H9c2 and primary neonatal rat cardiomyocytes were treated with Ang II. Cells were transfected with siRNA to silence Netrin-1 expression. Real-time polymerase chain reaction and Western blot analysis were used to detect the markers for fibrosis, apoptosis, and hypertrophy in cardiomyocytes. An Annexin V-EGFP/PI cell apoptosis detection kit was used to measure the level of apoptosis caused by angiotensin II. RESULTS We found that Netrin-1 expression was upregulated in the H9c2 cells and the neonatal rat cardiomyocytes stimulated by Ang II. The increased Netrin-1 expression was decreased by valsartan to block AT1R. Importantly, the application of Netrin-1 siRNA significantly alleviated the degrees of myocardial hypertrophy, fibrosis (reflected by Myhc, collagen I, and TGF-β) and apoptosis (reflected by the level of Caspase 3, Bax, and Bcl-2) induced by Ang II. In addition, the silencing of Netrin-1 substantially decreased the phosphorylation of PKCα, JNK, and P38. We treated H9c2 cells with LY317615, SP600125, and SB203580, inhibitors of PKCα, JNK, and P38, respectively, thereby resulting in a substantial decrease in hypertrophy, fibrosis, and apoptosis. CONCLUSIONS Ang II produces cardiac hypertrophy, fibrosis, and apoptosis through the upregulation of Netrin-1 and the activation of the AT1R/PKCα/MAPK (JNK, P38) pathway. Suppression of Netrin-1 can relieve Ang II-induced cardiac remodeling via inhibition of the PKCα/MAPK (JNK and P38) signaling pathway. Thus, Netrin-1 may be a novel therapeutic target for Ang II-mediated cardiac remodeling.
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Affiliation(s)
- Gaojun Wu
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, WenZhou, ZheJiang, China.
| | - Zhengxian Wang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, WenZhou, ZheJiang, China.
| | - Peiren Shan
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, WenZhou, ZheJiang, China.
| | - Shanjun Huang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, WenZhou, ZheJiang, China.
| | - Shuang Lin
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, WenZhou, ZheJiang, China.
| | - Weijian Huang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, WenZhou, ZheJiang, China.
| | - Zhouqing Huang
- The Key Laboratory of Cardiovascular Disease of Wenzhou, Department of Cardiology, The First Affiliated Hospital of WenZhou Medical University, WenZhou, ZheJiang, China.
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13
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Leocádio P, Menta P, Dias M, Fraga J, Goulart A, Santos I, Lotufo P, Bensenor I, Alvarez-Leite J. High Serum Netrin-1 and IL-1β in Elderly Females with ACS: Worse Prognosis in 2-years Follow-up. Arq Bras Cardiol 2020; 114:507-514. [PMID: 32267322 PMCID: PMC7792717 DOI: 10.36660/abc.20190035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 06/03/2019] [Indexed: 11/18/2022] Open
Abstract
Fundamento Vários marcadores têm sido avaliados quanto a um potencial impacto nas decisões clínicas ou na predição de mortalidade na síndrome coronariana aguda (SCA), incluindo Netrina-1 e IL-1β. Objetivo Examinamos o valor prognóstico de Netrina-1 e IL-1β em pacientes com SCA (2 anos de acompanhamento). Métodos Avaliamos Netrina-1, IL-1β e outros fatores de risco em amostras de soro de 803 pacientes. Curvas de Kaplan-Meier e regressão de Cox foram usadas para análise de óbito por todas as causas, óbito por doenças cardiovasculares (DCV) e desfecho combinado de infarto agudo do miocárdio (IAM) fatal ou novo IAM não fatal, considerando p < 0,05. Resultados Houve 115 óbitos por todas as causas, 78 óbitos por DCV e 67 eventos no desfecho combinado. Níveis de Netrina-1 acima da mediana (> 44,8 pg/mL) foram associados a pior prognóstico (óbito por todas as causas e por DCV) em mulheres idosas, mesmo após o ajuste do modelo (HR: 2,08, p = 0,038 e HR: 2,68, p = 0,036). Níveis de IL-1β acima da mediana (> 13,4 pg/mL) em mulheres idosas foram associados a risco aumentado para todos os desfechos após o ajuste (todas as causas - HR: 2,03, p = 0,031; DCV - HR: 3,01, p = 0,013; desfecho combinado - HR: 3,05, p = 0,029). Para homens, não foram observadas associações entre Netrina-1 ou IL-1β e os desfechos. Conclusão Níveis séricos elevados de Netrina-1 e IL-1β mostraram associação significativa com pior prognóstico em idosas do sexo feminino. Eles podem ser úteis como indicadores prognósticos em SCA. (Arq Bras Cardiol. 2020; 114(3):507-514)
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Affiliation(s)
- Paola Leocádio
- Departamento de Bioquímica e Imunologia - Universidade Federal de Minas Gerais, Belo Horizonte, MG - Brasil
| | - Penélope Menta
- Departamento de Bioquímica e Imunologia - Universidade Federal de Minas Gerais, Belo Horizonte, MG - Brasil
| | - Melissa Dias
- Departamento de Bioquímica e Imunologia - Universidade Federal de Minas Gerais, Belo Horizonte, MG - Brasil
| | - Júlia Fraga
- Departamento de Bioquímica e Imunologia - Universidade Federal de Minas Gerais, Belo Horizonte, MG - Brasil
| | - Alessandra Goulart
- Centro de Pesquisa Clínica e Epidemiológica do Hospital Universitário da Universidade de São Paulo, São Paulo, SP - Brasil
| | - Itamar Santos
- Centro de Pesquisa Clínica e Epidemiológica do Hospital Universitário da Universidade de São Paulo, São Paulo, SP - Brasil
| | - Paulo Lotufo
- Centro de Pesquisa Clínica e Epidemiológica do Hospital Universitário da Universidade de São Paulo, São Paulo, SP - Brasil.,Departamento de Clínica Médica da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP - Brasil
| | - Isabela Bensenor
- Centro de Pesquisa Clínica e Epidemiológica do Hospital Universitário da Universidade de São Paulo, São Paulo, SP - Brasil.,Departamento de Clínica Médica da Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP - Brasil
| | - Jacqueline Alvarez-Leite
- Departamento de Bioquímica e Imunologia - Universidade Federal de Minas Gerais, Belo Horizonte, MG - Brasil
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14
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Han Y, Jiang N, Su T, Yang QC, Yan CC, Ye L, Yuan Q, Zhu PW, Li W, Liu ZG, Shao Y. Netrin-1 promotes epithelium repair in corneal injury. Int J Ophthalmol 2020; 13:206-212. [PMID: 32090028 DOI: 10.18240/ijo.2020.02.02] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 12/25/2019] [Indexed: 11/23/2022] Open
Abstract
AIM To explore netrin-1 functions on corneal epithelium in vitro and in vivo. METHODS In vitro the human corneal epithelial (HCE) cells were treated with serum free DMEM-F12 basic media containing 0, 50, 100, 200, 300, 500, 800, and 1000 ng/mL of netrin-1, respectively. The cells viability was detected by cell counting kit-8 (CCK-8). The wound-healing assay was applied to assess the migration proficiency of HCE cells. Flow cytometry was used to analyze the cell-cycle distribution and apoptosis. In vivo, normal c57 (6wk) mice were demarcated with a trephine in the middle of the cornea to produce a 3-mm circular wound. Mice corneas were inflicted no epithelium with a 3-mm wound displayed, but remained the limbal epithelium intact. A blunt scalpel blade was used to remove the corneal epithelian cells, followed by topical netrin-1 application (200 ng/mL), and the group treated by PBS as control. The treated group was injected netrin-1 into the normal c57 mice inferior subconjunctival 4h before trauma. Mouse corneal inflammation and neovascularization were observed under slit lamp microscope. The apoptosis of corneal cells was determined by TUNEL staining. RESLUTS A concentration of 200 ng/mL netrin-1 enhanced 25% of the HCE viability. The relative migration rates were 76.3% and 100% in control and netrin-1 treated group after cultured 72h. Treated with netrin-1 (200 ng/mL) decreased the apoptosis of HCE cells, as well as decreased their percentage from 19.3%±0.57% to 12.7%±0.42% of the total. The remaining wound area was 1.22 mm2 in control group but 0.22 mm2 in the netrin-1 treated group. Exogenous Netrin-1 inhibits apoptosis of corneal epithelial cells of c57 mice. TUNEL-positive cells at the epithelial layer of the corneas of the control and netrin-1 treated c57 mice at 24h after wounding were 43.3% and 16.7% respectively. CONCLUSION Netrin-1 can reduce HCE apoptosis as well as promote its proliferation and migration. Topical application of netrin-1 promotes the injuryed cornea epithelial wound repair and inhibits apoptosis of corneal epithelial cells. These findings may offer potential therapies to repair the defects of corneal epithelial based on netrin-1.
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Affiliation(s)
- Yun Han
- Eye Institute of Xiamen University and Medical College of Xiamen University, Xiamen 361102, Fujian Province, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen 361102, Fujian Province, China
| | - Nan Jiang
- Eye Institute of Xiamen University and Medical College of Xiamen University, Xiamen 361102, Fujian Province, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen 361102, Fujian Province, China
| | - Ting Su
- Eye Institute of Xiamen University and Medical College of Xiamen University, Xiamen 361102, Fujian Province, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen 361102, Fujian Province, China
| | - Qi-Chen Yang
- Eye Institute of Xiamen University and Medical College of Xiamen University, Xiamen 361102, Fujian Province, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen 361102, Fujian Province, China
| | - Cong-Cong Yan
- Eye Institute of Xiamen University and Medical College of Xiamen University, Xiamen 361102, Fujian Province, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen 361102, Fujian Province, China
| | - Lei Ye
- Department of Ophthalmology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Qing Yuan
- Department of Ophthalmology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Pei-Wen Zhu
- Department of Ophthalmology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, China
| | - Wei Li
- Eye Institute of Xiamen University and Medical College of Xiamen University, Xiamen 361102, Fujian Province, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen 361102, Fujian Province, China
| | - Zu-Guo Liu
- Eye Institute of Xiamen University and Medical College of Xiamen University, Xiamen 361102, Fujian Province, China.,Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Xiamen 361102, Fujian Province, China
| | - Yi Shao
- Department of Ophthalmology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, China
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15
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Sevim Bayrak C, Zhang P, Tristani-Firouzi M, Gelb BD, Itan Y. De novo variants in exomes of congenital heart disease patients identify risk genes and pathways. Genome Med 2020; 12:9. [PMID: 31941532 PMCID: PMC6961332 DOI: 10.1186/s13073-019-0709-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 12/26/2019] [Indexed: 12/14/2022] Open
Abstract
Background Congenital heart disease (CHD) affects ~ 1% of live births and is the most common birth defect. Although the genetic contribution to the CHD has been long suspected, it has only been well established recently. De novo variants are estimated to contribute to approximately 8% of sporadic CHD. Methods CHD is genetically heterogeneous, making pathway enrichment analysis an effective approach to explore and statistically validate CHD-associated genes. In this study, we performed novel gene and pathway enrichment analyses of high-impact de novo variants in the recently published whole-exome sequencing (WES) data generated from a cohort of CHD 2645 parent-offspring trios to identify new CHD-causing candidate genes and mutations. We performed rigorous variant- and gene-level filtrations to identify potentially damaging variants, followed by enrichment analyses and gene prioritization. Results Our analyses revealed 23 novel genes that are likely to cause CHD, including HSP90AA1, ROCK2, IQGAP1, and CHD4, and sharing biological functions, pathways, molecular interactions, and properties with known CHD-causing genes. Conclusions Ultimately, these findings suggest novel genes that are likely to be contributing to CHD pathogenesis.
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Affiliation(s)
- Cigdem Sevim Bayrak
- Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Peng Zhang
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY, USA
| | - Martin Tristani-Firouzi
- Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah, Salt Lake City, UT, USA
| | - Bruce D Gelb
- Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Yuval Itan
- Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA. .,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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16
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Gunpinar S, Meraci B, Dundar N. Netrin-1 and its receptor Unc5b as markers of periodontal disease. J Periodontal Res 2019; 55:267-276. [PMID: 31769036 DOI: 10.1111/jre.12712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 09/19/2019] [Accepted: 10/27/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The aim of this present study was to evaluate the levels of Netrin-1 and Unc5b in periodontal health and disease. BACKGROUND Netrin-1, acting via its receptor UNC5b, regulates the inflammatory response and takes apart in bone destructive diseases. METHODS Samples of gingival crevicular fluid (GCF), whole saliva, and serum were taken from systemically healthy, nonsmoking 20 periodontitis , 20 gingivitis patients, and 20 periodontally healthy subjects at baseline and 4 weeks after nonsurgical periodontal treatment (NSPT). Whole-mouth and site-specific clinical periodontal parameters were recorded. Netrin-1 and Unc5b levels were measured by enzyme-linked immunosorbent assay. Data were analyzed by nonparametric tests. RESULTS Total amount of Netrin-1 in GCF was significantly higher in periodontitis than the others, and the levels were significantly reduced after NSPT. Salivary and serum concentrations of Netrin-1 were significantly different among the study groups (P = .000), and NSPT significantly increased the concentration levels of both salivary and serum Netrin-1 (P < .05). Healthy subjects had significantly lower GCF (P = .001) and conversely, higher salivary and serum levels of Unc5b than the other groups (P = .002). The GCF levels of Unc5b were significantly reduced (P < .01), and conversely, serum concentrations were significantly increased after NSPT (P < .05). GCF Netrin-1 and Unc5b total amounts were positively correlated with clinical parameters (P < .01 and P < .05) whereas salivary Netrin-1 and Unc5b concentrations were negatively correlated with clinical parameters (P < .01 and P < .05). CONCLUSIONS The results of this study indicate that Netrin-1 and its receptor Unc5b may have essential roles in periodontal inflammation and those can be assumed as useful therapeutic agent to control inflammation and periodontal breakdown.
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Affiliation(s)
- Sadiye Gunpinar
- Department of Periodontology, Faculty of Dentistry, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Bilge Meraci
- Department of Periodontology, Faculty of Dentistry, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Niyazi Dundar
- Faculty of Dentistry, Research Center, Selcuk University, Konya, Turkey
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17
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Abstract
Macrophages accumulate prominently in the visceral adipose tissue (VAT) of obese humans and high fat diet (HFD) fed mice, and this is linked to insulin resistance and type II diabetes. While the mechanisms regulating macrophage recruitment in obesity have been delineated, the signals directing macrophage persistence in VAT are poorly understood. We previously showed that the neuroimmune guidance cue netrin-1 is expressed in the VAT of obese mice and humans, where it promotes macrophage accumulation. To better understand the source of netrin-1 and its effects on adipose tissue macrophage (ATM) fate and function in obesity, we generated mice with myeloid-specific deletion of netrin-1 (Ntn1fl/flLysMCre+/–; Ntn1Δmac). Interestingly, Ntn1Δmac mice showed a modest decrease in HFD-induced adiposity and adipocyte size, in the absence of changes in food intake or leptin, that was accompanied by an increase in markers of adipocyte beiging (Prdm16, UCP-1). Using single cell RNA-seq, combined with conventional histological and flow cytometry techniques, we show that myeloid-specific deletion of netrin-1 caused a 50% attrition of ATMs in HFD-fed mice, particularly of the resident macrophage subset, and altered the phenotype of residual ATMs to enhance lipid handling. Pseudotime analysis of single cell transcriptomes showed that in the absence of netrin-1, macrophages in the obese VAT underwent a phenotypic switch with the majority of ATMs activating a program of genes specialized in lipid handling, including fatty acid uptake and intracellular transport, lipid droplet formation and lipolysis, and regulation of lipid localization. Furthermore, Ntn1Δmac macrophages had reduced expression of genes involved in arachidonic acid metabolism, and targeted LCMS/MS metabololipidomics analysis revealed decreases in proinflammatory eicosanoids (5-HETE, 6-trans LTB4, TXB2, PGD2) in the obese VAT. Collectively, our data show that targeted deletion of netrin-1 in macrophages reprograms the ATM phenotype in obesity, leading to reduced adipose inflammation, and improved lipid handling and metabolic function.
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18
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Gedikli U, Emektar E, Corbacioglu SK, Dagar S, Uzunosmanoglu H, Ozdogan S, Cevik Y. Determination of netrin-1 levels and its relationship with neurotoxicity in carbon monoxide poisoning. Hum Exp Toxicol 2019; 38:561-566. [PMID: 30719925 DOI: 10.1177/0960327119828124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE The aim of the study was to assess netrin-1 levels in carbon monoxide (CO) poisoning to determine its relationship with poisoning severity and neurotoxicity. METHODS This is a cross-sectional prospective study. The patients older than 18 years with CO poisoning were included. The patients were categorized into two groups on the basis of neurological involvement. Both the patient and the control groups were sampled for netrin-1 at 0th hour, and the patient group only was sampled for netrin-1 at 4th hour. RESULTS A total of 84 patients and 50 healthy controls were enrolled. The median 0th hour netrin-1 level of the patient group (765.1 pg/mL (619.8-983.1) was significantly higher than the control group (484 pg/mL (376-1031.6)) ( p < 0.001). There was also a significant difference between the 0th hour and 4th hour netrin-1 (888.9 pg/mL (700.3-1175.5)) levels in the patient group ( p < 0.001).There was no significant statistical difference between patients with and without neurological involvement ( p = 0.62) and between those who underwent hyperbaric oxygen therapy (HBOT) and those who did not ( p = 0.76) with respect to 4th hour netrin-1 levels. CONCLUSION The significantly higher netrin-1 levels in patients with CO poisoning, suggests that netrin-1 is elevated as a stress marker. Although there is no significant difference in netrin-1 levels in patients with neurological impairment in CO poisonings, netrin-1 may show subclinically neurological effects. Hence, we believe that netrin-1 cannot be used as a marker of poisoning severity.
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Affiliation(s)
- U Gedikli
- Department of Emergency Medicine, Kecioren Training and Research Hospital, Ankara, Turkey
| | - E Emektar
- Department of Emergency Medicine, Kecioren Training and Research Hospital, Ankara, Turkey
| | - S K Corbacioglu
- Department of Emergency Medicine, Kecioren Training and Research Hospital, Ankara, Turkey
| | - S Dagar
- Department of Emergency Medicine, Kecioren Training and Research Hospital, Ankara, Turkey
| | - H Uzunosmanoglu
- Department of Emergency Medicine, Kecioren Training and Research Hospital, Ankara, Turkey
| | - S Ozdogan
- Department of Emergency Medicine, Kecioren Training and Research Hospital, Ankara, Turkey
| | - Y Cevik
- Department of Emergency Medicine, Kecioren Training and Research Hospital, Ankara, Turkey
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19
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Zhu S, Zhu J, Zhen G, Hu Y, An S, Li Y, Zheng Q, Chen Z, Yang Y, Wan M, Skolasky RL, Cao Y, Wu T, Gao B, Yang M, Gao M, Kuliwaba J, Ni S, Wang L, Wu C, Findlay D, Eltzschig HK, Ouyang HW, Crane J, Zhou FQ, Guan Y, Dong X, Cao X. Subchondral bone osteoclasts induce sensory innervation and osteoarthritis pain. J Clin Invest 2019; 129:1076-1093. [PMID: 30530994 DOI: 10.1172/jci121561] [Citation(s) in RCA: 230] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 12/07/2018] [Indexed: 12/16/2022] Open
Abstract
Joint pain is the defining symptom of osteoarthritis (OA) but its origin and mechanisms remain unclear. Here, we investigated an unprecedented role of osteoclast-initiated subchondral bone remodeling in sensory innervation for OA pain. We show that osteoclasts secrete netrin-1 to induce sensory nerve axonal growth in subchondral bone. Reduction of osteoclast formation by knockout of receptor activator of nuclear factor kappa-B ligand (Rankl) in osteocytes inhibited the growth of sensory nerves into subchondral bone, dorsal root ganglion neuron hyperexcitability, and behavioral measures of pain hypersensitivity in OA mice. Moreover, we demonstrated a possible role for netrin-1 secreted by osteoclasts during aberrant subchondral bone remodeling in inducing sensory innervation and OA pain through its receptor DCC (deleted in colorectal cancer). Importantly, knockout of Netrin1 in tartrate-resistant acid phosphatase-positive (TRAP-positive) osteoclasts or knockdown of Dcc reduces OA pain behavior. In particular, inhibition of osteoclast activity by alendronate modifies aberrant subchondral bone remodeling and reduces innervation and pain behavior at the early stage of OA. These results suggest that intervention of the axonal guidance molecules (e.g., netrin-1) derived from aberrant subchondral bone remodeling may have therapeutic potential for OA pain.
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Affiliation(s)
- Shouan Zhu
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianxi Zhu
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Orthopaedic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Gehua Zhen
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yihe Hu
- Department of Orthopaedic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Senbo An
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Orthopaedic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Yusheng Li
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Orthopaedic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Qin Zheng
- Department of Neuroscience, Neurosurgery, and Dermatology, Center of Sensory Biology, Johns Hopkins University School of Medicine, Howard Hughes Medical Institute, Baltimore, Maryland, USA
| | - Zhiyong Chen
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Ya Yang
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Mei Wan
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Richard Leroy Skolasky
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yong Cao
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Tianding Wu
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Bo Gao
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Mi Yang
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Manman Gao
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Julia Kuliwaba
- Department of Orthopaedics and Trauma, Royal Adelaide Hospital, University of Adelaide, Adelaide, Australia
| | - Shuangfei Ni
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Lei Wang
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Chuanlong Wu
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - David Findlay
- Department of Orthopaedics and Trauma, Royal Adelaide Hospital, University of Adelaide, Adelaide, Australia
| | - Holger K Eltzschig
- Department of Anesthesiology, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, Texas, USA
| | - Hong Wei Ouyang
- Dr. Li Dak Sum and Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, China.,ZJU-UoE Joint Institute, School of Medicine, Zhejiang University, Hangzhou, China
| | - Janet Crane
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Feng-Quan Zhou
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yun Guan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Xinzhong Dong
- Department of Neuroscience, Neurosurgery, and Dermatology, Center of Sensory Biology, Johns Hopkins University School of Medicine, Howard Hughes Medical Institute, Baltimore, Maryland, USA
| | - Xu Cao
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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20
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Lin Z, Jin J, Bai W, Li J, Shan X. Netrin-1 prevents the attachment of monocytes to endothelial cells via an anti-inflammatory effect. Mol Immunol 2018; 103:166-172. [PMID: 30290313 DOI: 10.1016/j.molimm.2018.08.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 07/31/2018] [Accepted: 08/19/2018] [Indexed: 01/30/2023]
Abstract
Netrin-1 is best known for its function guiding axon growth and migration. Netrin-1 has been shown to be involved in regulating cardiovascular function. In this study, we aimed to understand the biological role of Netrin-1 and its receptor Unc5b in endothelial cells. Our results demonstrate that Unc5b was moderately expressed in human aortic endothelial cells (HAECs) and TNF-α had a dose-dependent inhibitory effect on Unc5b level. Netrin-1 potently suppressed TNF-α-induced vascular adhesion molecules VCAM-1, ICAM-1, E-selectin and blocked the adhesion of monocytes to endothelial cells. Netrin-1 also suppressed TNF-α-induced production of cytokines including MCP-1, IL-1β, and IL-6. Importantly, Netrin-1 suppressed toll like receptor 4 (TLR4) expression and prevented NF-κB activation. Mechanistically, Netrin-1 reduced TNF-α-induced IKK and IκBα activation and prevented degradation of IκBα. Netrin-1 reduced nuclear accumulation of p65 and strongly suppressed NF-κB promoter activation. Collectively, our data demonstrated that signaling of Netrin-1 and its receptor Unc5b had an anti-inflammatory effect in endothelial cells. Netrin-1 signaling could be imperative for normal endothelial function.
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Affiliation(s)
- Zhaoheng Lin
- The People's Hospital of Xishuangbanna Dai Nationality Autonomous Prefecture, Jinghong, Yunnan Province, PR China.
| | - Jing Jin
- The People's Hospital of Xishuangbanna Dai Nationality Autonomous Prefecture, Jinghong, Yunnan Province, PR China
| | - Weirong Bai
- The People's Hospital of Xishuangbanna Dai Nationality Autonomous Prefecture, Jinghong, Yunnan Province, PR China
| | - Jiao Li
- The People's Hospital of Xishuangbanna Dai Nationality Autonomous Prefecture, Jinghong, Yunnan Province, PR China
| | - Xiyun Shan
- The People's Hospital of Xishuangbanna Dai Nationality Autonomous Prefecture, Jinghong, Yunnan Province, PR China
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The role of UNC5b in ox-LDL inhibiting migration of RAW264.7 macrophages and the involvement of CCR7. Biochem Biophys Res Commun 2018; 505:637-643. [PMID: 30286954 DOI: 10.1016/j.bbrc.2018.09.178] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 09/28/2018] [Indexed: 11/23/2022]
Abstract
The formation of macrophage foam cells by ingesting ox-LDL and focal retention in the subendothelial space are the hallmarks of the early atherosclerotic lesion. The C-C chemokine receptor type 7 (CCR7) is positively correlated with the macrophage migration. But the mechanism of CCR7 regulation is not fully clearness. In the present study, we demonstrates that expression in UNC5b and netrin-1 was enhanced in respond to ox-LDL in Raw264.7 macrophage and associated with decreasing cell migration. Interestingly, it was found that ox-LDL significantly downregulate CCR7 gene expression. The expression of CCR7 in mRNA and protein levels were decreased in ox-LDL treated Raw264.7 macrophage when we over expression of UNC5b with pcDNA3.1-UNC5b plasmid. We got the inverse results after silence UNC5b gene with siUNC5b. Meanwhile, the data show that in ox-LDL inducement, UNC5b down-regulated CCR7, and then inhibited macrophage migration. This novel phenomenon is of a crucial highlights to understand deeply the pathogenesis of atherosclerosis. The molecular mechanism of CCR7 regulation deserves intensive study.
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Rust R, Gantner C, Schwab ME. Pro- and antiangiogenic therapies: current status and clinical implications. FASEB J 2018; 33:34-48. [PMID: 30085886 DOI: 10.1096/fj.201800640rr] [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] [Indexed: 12/22/2022]
Abstract
Blood vessels nurture every part of the human body. Consequently, abnormalities in the vasculature are closely associated with a variety of diseases, including cerebral stroke, heart disease, retinopathy, and cancer. Pro- or antiangiogenic therapies can influence these diseases by regulating the growth of new blood vessels from a pre-existing vascular network or dampening excessive blood growth. However, clinical translation of these approaches is slow and challenging. In this review, we discuss recent preclinical approaches to regulate angiogenesis and their potential and risks in a clinical setting.-Rust, R., Gantner, C., Schwab, M. E. Pro- and antiangiogenic therapies: current status and clinical implications.
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Affiliation(s)
- Ruslan Rust
- Brain Research Institute, University of Zurich, Zurich, Switzerland.,Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland; and
| | - Christina Gantner
- Department of Biology, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland
| | - Martin E Schwab
- Brain Research Institute, University of Zurich, Zurich, Switzerland.,Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland; and
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Abstract
The World Health Organization suggests that the cardiovascular diseases (CVDs) are the major cause of mortality and account for two-thirds of the deaths all over the world. These diseases kill about 17 million people every year and 3 in every 10 deaths are due to these diseases. The past decade has seen considerable improvements in diagnosis as well as treatment of various heart diseases. Various new therapeutic targets are being identified through in-depth knowledge of the disease mechanisms which has favored the testing of new strategies leading to newer treatment options. Opioid peptides and G-protein-coupled opioid receptors (ORs) have been previously studied widely in terms of central nervous system actions in mitigating the pain and drug abuse. The OR agonism or antagonism induces cytoprotective states in the myocardium, rendering these receptors as an attractive target for protection of heart from the fatal heart diseases. The opioids can provide an extended window of protection of the heart from various diseases. Although the mechanisms may not be fully understood, they seem to play a crucial role in various CVDs such as hypertension, hyperlipidemia, ischemic heart disease myocardial ischemia, and congestive heart failure. Since these compounds are already being used in acute and chronic pain, soon these compounds might be approved for use as cardioprotective agents. The following review focuses on the new information acquired on the role of the ORs in various CVDs.
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Affiliation(s)
- Hemangi Rawal
- Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat, India
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Yimer EM, Zewdie KA, Hishe HZ. Netrin as a Novel Biomarker and Its Therapeutic Implications in Diabetes Mellitus and Diabetes-Associated Complications. J Diabetes Res 2018; 2018:8250521. [PMID: 30320139 PMCID: PMC6167572 DOI: 10.1155/2018/8250521] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/14/2018] [Accepted: 09/04/2018] [Indexed: 12/16/2022] Open
Abstract
Diabetes is a multifactorial metabolic syndrome and is one of the shared long-lasting illnesses globally. It is linked to long-term microvascular and macrovascular complications that contribute to disability, compromised quality of life, and reduction in lifespan, which eventually leads to death. This disease is not only incurring significant economic burden but also adversely affects the patients, caregivers, communities, and the society at large. The interruption of diabetes progress and its complications is a primary focus of scientific communities. In spite of various diagnostic modalities for diabetes, there is a limited marker to investigate the risk and progress of its complications. Netrin has recently received more attention as a biomarker of diabetes and a broader range of long-term complication. Therefore, the impetus of this review is to exhaustively discuss the role of Netrin as a potential biomarker and its therapeutic implication in diabetes and diverse sets of microvascular and macrovascular complications of diabetes. It also discourses the possible mechanisms of Netrin for the said pharmacological effect for a better understanding of the development and progression of diabetes and its complications in relation to this protein. It enables protective measures to be applied at the subclinical stage and the responses to preventive or therapeutic measures to be scrutinized. Besides, it might also facilitate the appraisal of novel therapeutic options for diabetes and various complications through modifying the endogenous Netrin and provide surrogate endpoints for intervention.
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Affiliation(s)
- Ebrahim M. Yimer
- Department of Pharmacology and Toxicology, College of Health Sciences, Mekelle University, Ethiopia
| | - Kaleab Alemayehu Zewdie
- Department of Pharmacology and Toxicology, College of Health Sciences, Mekelle University, Ethiopia
| | - Hailemichael Zeru Hishe
- Department of Pharmacology and Toxicology, College of Health Sciences, Mekelle University, Ethiopia
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Yim J, Kim G, Lee BW, Kang ES, Cha BS, Kim JH, Cho JW, Lee SG, Lee YH. Relationship Between Circulating Netrin-1 Concentration, Impaired Fasting Glucose, and Newly Diagnosed Type 2 Diabetes. Front Endocrinol (Lausanne) 2018; 9:691. [PMID: 30532735 PMCID: PMC6265472 DOI: 10.3389/fendo.2018.00691] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 11/02/2018] [Indexed: 01/22/2023] Open
Abstract
Background: The protein netrin-1 has demonstrated anti-inflammatory, tissue regeneration, and immune modulation properties. Although inflammation is a major contributing factor in the development of insulin resistance and type 2 diabetes, little is known about a possible relationship between serum netrin-1 and type 2 diabetes. Therefore, we investigated the association between circulating levels of netrin-1 and glycometabolic parameters predictive of type 2 diabetes. Methods: Serum samples were collected from 41 normal controls, 85 subjects with impaired fasting glucose (IFG), and 92 subjects with newly diagnosed type 2 diabetes. Clinical and laboratory parameters were assessed and netrin-1 levels were measured by commercial enzyme-linked immunosorbent assay. Spearman correlation analyses and multivariable-adjusted regression analyses were conducted to examine the relationship between serum netrin-1 levels and glycometabolic parameters. Results: Serum netrin-1 levels in subjects with type 2 diabetes or IFG were significantly higher compared to normal controls (441.0, 436.6, and 275.9 pg/mL, respectively; P for trend < 0.001). Serum netrin-1 levels were significantly positively correlated with fasting glucose, HbA1c, and insulin resistance index (all Ps < 0.01). Serum netrin-1 levels were independently associated with IFG or type 2 diabetes (standardized β = 0.405, P < 0.001) after adjusting for covariates and potential confounders. In addition, the receiver operating characteristic (ROC) analysis showed that serum netrin-1 levels could identify the presence of IFG and type 2 diabetes with the area under the ROC curve (AUC) of 0.784 (P < 0.001). Conclusions: Our results suggest that elevated serum netrin-1 levels are significantly associated with the presence of IFG and type 2 diabetes.
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Affiliation(s)
- Jisook Yim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, South Korea
- Division of Special Chemistry, Green Cross Reference Laboratory, Yongin-si, South Korea
- Department of Laboratory Medicine, Veterans General Hospital, Incheon, South Korea
| | - Gyuri Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Byung-Wan Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, South Korea
| | - Eun Seok Kang
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, South Korea
| | - Bong-Soo Cha
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, South Korea
| | - Jeong-Ho Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Jin Won Cho
- Department of Systems Biology, Glycosylation Network Research Center, Yonsei University, Seoul, South Korea
| | - Sang-Guk Lee
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, South Korea
- *Correspondence: Sang-Guk Lee
| | - Yong-ho Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
- Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, South Korea
- Department of Systems Biology, Glycosylation Network Research Center, Yonsei University, Seoul, South Korea
- Yong-ho Lee
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Layne K, Goodman T, Ferro A, Passacquale G. The effect of aspirin on circulating netrin-1 levels in humans is dependent on the inflammatory status of the vascular endothelium. Oncotarget 2017; 8:86548-86555. [PMID: 29156815 PMCID: PMC5689705 DOI: 10.18632/oncotarget.21240] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 08/07/2017] [Indexed: 01/19/2023] Open
Abstract
In atherosclerotic animal models, the cyclo-oxygenase (COX)-inhibitor aspirin counteracts downregulation of endothelial-derived netrin-1, thus reducing arterial inflammation. We here explored the effect of aspirin on netrin-1 in healthy subjects undergoing influenza immunisation, which is an established experimental model of inflammation-related endothelial dysfunction. Our data showed that netrin-1 undergoes reduction (-29.25% from baseline; p=0.0017) in the presence of endothelial activation (VCAM-1 rose by 9.98% 2-days post-vaccination; p=0.0022). Aspirin counteracted vaccine-induced endothelial activation and reduction of netrin-1 in a dose-dependent manner (-3.06% and -17.03% from baseline at a dose of 300mg and 75mg respectively; p=0.0465 and p>0.05 vs untreated). Clopidogrel, which was used as a comparator due to its similar anti-platelet activity, also reduced endothelial activation but, unlike aspirin, enhanced netrin-1 levels (+20.96% from baseline; p=0.0033 vs untreated). A correlation analysis incorporating cytokines, hs-CRP, VCAM-1, TXB2 and PGE2, showed that changes in netrin-1 were directly related to PGE2 variations only (r=0.6103; p=0.0002). In a separate population of 40 healthy unimmunised volunteers, 28-day treatment with aspirin 300mg reduced netrin-1 (-18.76% from baseline; p=0.0012) without affecting endothelial markers or hs-CRP; as expected, aspirin suppressed TXB2 and PGE2. Netrin-1 and PGE2 levels were directly related (r=0.358; p=0.0015), but other parameters including TXB2, hs-CRP and endothelial markers, were not. In conclusion, aspirin counteracts downregulation of netrin-1 following endothelial dysfunction due to its anti-inflammatory effect on the activated endothelium. However, inhibition of COX-dependent prostanoids negatively modulates netrin-1 synthesis in healthy subjects, and this could give rise to aspirin-dependent reduction in netrin-1 under steady state conditions.
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Affiliation(s)
- Kerry Layne
- Department of Clinical Pharmacology, BHF Centre of Research Excellence, Cardiovascular Division, King's College London, London, UK
| | - Timothy Goodman
- Department of Clinical Pharmacology, BHF Centre of Research Excellence, Cardiovascular Division, King's College London, London, UK
| | - Albert Ferro
- Department of Clinical Pharmacology, BHF Centre of Research Excellence, Cardiovascular Division, King's College London, London, UK
| | - Gabriella Passacquale
- Department of Clinical Pharmacology, BHF Centre of Research Excellence, Cardiovascular Division, King's College London, London, UK
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Muñoz JC, Martín R, Alonso C, Gutiérrez B, Nieto ML. Relation between serum levels of chemotaxis-related factors and the presence of coronary artery calcification as expression of subclinical atherosclerosis. Clin Biochem 2017; 50:1048-1055. [PMID: 28830786 DOI: 10.1016/j.clinbiochem.2017.08.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 08/02/2017] [Accepted: 08/19/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND Atherosclerotic plaque formation is characterized by recruitment of monocytes/macrophages, which contributes to its calcification by releasing pro-osteogenic cytokines. Chemotaxis-related proteins, including netrin-1, gremlin-1 and macrophage inflammatory protein-1β (MIP-1β), regulate immune cell migration. However, their relation with the presence of subclinical atherosclerosis, assessed by measures of coronary artery calcifications (CAC) in patients without known coronary artery disease (CAD), remains unclear. AIMS To examine whether these chemoattractant-related proteins are associated with the presence of CAC in patients without known CAD. METHODS A retrospective case-control observational study was conducted in 120 outpatients without CAD, undergoing a CAC evaluation by computed tomography with the Agatston Calcium score, categorized as CAC- (none) and CAC+ (≥1). Serum biomarkers were quantified by ELISA. RESULTS Lpa, dyslipidaemia and smoking were significantly higher (p=0.006, p≤0.0001 and p=0.001, respectively) in CAC+ patients. Serum netrin-1 levels were lower in CAC+ than in CAC- patients (196.8±127.8pg/ml versus 748.3±103.2pg/ml, p≤0.0001), and a similar pattern was found for gremlin-1 (1.14±0.39ng/ml versus 4.33±1.20ng/ml, p≤0.0001). However, TNFα and MIP-1β were strongly upregulated in CAC+ patients (447.56±74pg/ml versus 1104±144pg/ml and 402.00±94pg/ml versus 905.0±101.6pg/ml, respectively, p≤0.001). Multivariate analyses revealed that low netrin-1 and gremlin-1 levels and high TNFα and MIP-1β amounts were associated with CAC presence, after adjustment for clinical and biochemical variables. CONCLUSIONS We found a netrin-1 and gremlin-1 deficiency and a TNFα and MIP-1β overproduction in CAC+ patients' serum. These proteins may be used to identify individuals with subclinical atherosclerosis. Further research is warranted in a larger cohort of patients to establish these chemotactic-related proteins as biomarkers that improve CAD risk stratification.
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Affiliation(s)
- Juan Carlos Muñoz
- Servicio de Cardiología, Hospital Universitario Rio Hortega, Valladolid, Spain
| | - Rubén Martín
- Instituto de Biología y Genética Molecular, CSIC-UVa, Valladolid, Spain
| | - Carmen Alonso
- Servicio de Radiología, Hospital Universitario Rio Hortega, Valladolid, Spain
| | - Beatriz Gutiérrez
- Instituto de Biología y Genética Molecular, CSIC-UVa, Valladolid, Spain
| | - María Luisa Nieto
- Instituto de Biología y Genética Molecular, CSIC-UVa, Valladolid, Spain; CIBER de Enfermedades Cardiovasculares (CIBERCV). Instituto de Salud Carlos III, Madrid, Spain.
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Kefeli U, Ucuncu Kefeli A, Cabuk D, Isik U, Sonkaya A, Acikgoz O, Ozden E, Uygun K. Netrin-1 in cancer: Potential biomarker and therapeutic target? Tumour Biol 2017; 39:1010428317698388. [PMID: 28443497 DOI: 10.1177/1010428317698388] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Netrin-1, a laminin-related protein, is known to be involved in the nervous system development. Recently, Netrin-1's involvement in other processes such as cell adhesion, motility, proliferation, and differentiation that are important for the development of epithelial tissues has been described. In addition, Netrin-1 and its receptors, deleted in colorectal cancer and uncoordinated-5 homolog, have been linked to apoptosis and angiogenesis. Since these properties are essential for tumor development, Netrin-1 and its receptors have been reported to promote tumorigenesis in many types of cancers. Here, we review the Netrin-1 mediated regulation of cancer, its potential use as a biomarker, and the targeting of the Netrin-1 pathway to treat cancers.
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Affiliation(s)
- Umut Kefeli
- 1 Department of Medical Oncology, Kocaeli University School of Medicine, Kocaeli, Turkey
| | | | - Devrim Cabuk
- 1 Department of Medical Oncology, Kocaeli University School of Medicine, Kocaeli, Turkey
| | - Ulas Isik
- 1 Department of Medical Oncology, Kocaeli University School of Medicine, Kocaeli, Turkey
| | - Alper Sonkaya
- 1 Department of Medical Oncology, Kocaeli University School of Medicine, Kocaeli, Turkey
| | - Ozgur Acikgoz
- 1 Department of Medical Oncology, Kocaeli University School of Medicine, Kocaeli, Turkey
| | - Ercan Ozden
- 1 Department of Medical Oncology, Kocaeli University School of Medicine, Kocaeli, Turkey
| | - Kazim Uygun
- 1 Department of Medical Oncology, Kocaeli University School of Medicine, Kocaeli, Turkey
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Gurses KM, Ozmen F, Kocyigit D, Yersal N, Bilgic E, Kaya E, Kopru CZ, Soyal T, Doganci S, Tokgozoglu L, Korkusuz P. Netrin-1 is associated with macrophage infiltration and polarization in human epicardial adipose tissue in coronary artery disease. J Cardiol 2017; 69:851-858. [DOI: 10.1016/j.jjcc.2016.08.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 08/25/2016] [Accepted: 08/29/2016] [Indexed: 12/12/2022]
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Xie Z, Enkhjargal B, Reis C, Huang L, Wan W, Tang J, Cheng Y, Zhang JH. Netrin-1 Preserves Blood-Brain Barrier Integrity Through Deleted in Colorectal Cancer/Focal Adhesion Kinase/RhoA Signaling Pathway Following Subarachnoid Hemorrhage in Rats. J Am Heart Assoc 2017; 6:JAHA.116.005198. [PMID: 28526701 PMCID: PMC5524080 DOI: 10.1161/jaha.116.005198] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Netrin-1 (NTN-1) has been established to be a novel intrinsic regulator of blood-brain barrier (BBB) maintenance. This study was carried out to investigate the potential roles of exogenous NTN-1 in preserving BBB integrity after experimental subarachnoid hemorrhage (SAH) as well as the underlying mechanisms of its protective effects. METHODS AND RESULTS A total of 309 male Sprague-Dawley rats were subjected to an endovascular perforation model of SAH. Recombinant NTN-1 was administered intravenously 1 hour after SAH induction. NTN-1 small interfering RNA or Deleted in Colorectal Cancer small interfering RNA was administered intracerebroventricular at 48 hours before SAH. Focal adhesion kinase inhibitor was administered by intraperitoneal injection at 1 hour prior to SAH. Neurological scores, brain water content, BBB permeability, RhoA activity, Western blot, and immunofluorescence staining were evaluated. The expression of endogenous NTN-1 and its receptor Deleted in Colorectal Cancer were increased after SAH. Administration of exogenous NTN-1 significantly reduced brain water content and BBB permeability and ameliorated neurological deficits at 24 and 72 hours after SAH. Exogenous NTN-1 treatment significantly promoted phosphorylated focal adhesion kinase activation and inhibited RhoA activity, as well as upregulated the expression of ZO-1 and Occludin. Conversely, depletion of endogenous NTN-1 aggravated BBB breakdown and neurological impairments at 24 hours after SAH. The protective effects of NTN-1 at 24 hours after SAH were also abolished by pretreatment with Deleted in Colorectal Cancer small interfering RNA and focal adhesion kinase inhibitor. CONCLUSIONS NTN-1 treatment preserved BBB integrity and improved neurological functions through a Deleted in Colorectal Cancer/focal adhesion kinase/RhoA signaling pathway after SAH. Thus, NTN-1 may serve as a promising treatment to alleviate early brain injury following SAH.
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Affiliation(s)
- Zongyi Xie
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA.,Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Budbazar Enkhjargal
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Cesar Reis
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Lei Huang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA.,Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Weifeng Wan
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Jiping Tang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Yuan Cheng
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - John H Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA .,Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA.,Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA
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Xie Z, Huang L, Enkhjargal B, Reis C, Wan W, Tang J, Cheng Y, Zhang JH. Intranasal administration of recombinant Netrin-1 attenuates neuronal apoptosis by activating DCC/APPL-1/AKT signaling pathway after subarachnoid hemorrhage in rats. Neuropharmacology 2017; 119:123-133. [PMID: 28347836 DOI: 10.1016/j.neuropharm.2017.03.025] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 03/20/2017] [Accepted: 03/23/2017] [Indexed: 01/16/2023]
Abstract
Neuronal apoptosis is a crucial pathological process in early brain injury after subarachnoid hemorrhage (SAH). The effective therapeutic strategies to ameliorate neuronal apoptosis are still absent. We intended to determine whether intranasal administration of exogenous Netrin-1 (NTN-1) could attenuate neuronal apoptosis after experimental SAH, specifically via activating DCC-dependent APPL-1/AKT signaling cascade. Two hundred twenty-five male Sprague-Dawley rats were subjected to the endovascular perforation model of SAH. Recombinant human NTN-1 (rNTN-1) was administered intranasally. NTN-1 small interfering RNA (siRNA), APPL-1 siRNA, and AKT inhibitor MK2206 were administered through intracerebroventricular (i.c.v.) injection. SAH grade, neurological score, neuronal apoptosis assessed by cleaved caspase-3 (CC-3) expression and Fluoro-Jade C (FJC) staining, double immunofluorescence staining, and Western blot were examined. Our results revealed that endogenous NTN-1 level was increased after SAH. Administration of rNTN-1 improved neurological outcomes at 24 h and 72 h after SAH, while knockdown of endogenous NTN-1 worsened neurological impairments. Furthermore, exogenous rNTN-1 treatment promoted APPL-1 activation, increased phosphorylated-AKT and Bcl-2 expression, as well as decreased apoptotic marker CC-3 expression and the number of FJC-positive neurons, thereby alleviated neuronal apoptosis. Conversely, APPL-1 siRNA and MK2206 abolished the anti-apoptotic effect of exogenous rNTN-1 at 24 h after SAH. Collectively, intranasal administration of exogenous rNTN-1 attenuated neuronal apoptosis and improved neurological function in SAH rats, at least in apart via activating DCC/APPL-1/AKT signaling pathway.
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Affiliation(s)
- Zongyi Xie
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China; Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Lei Huang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States; Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Budbazar Enkhjargal
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Cesar Reis
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Weifeng Wan
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Jiping Tang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Yuan Cheng
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China.
| | - John H Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States; Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States; Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States.
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Prieto CP, Ortiz MC, Villanueva A, Villarroel C, Edwards SS, Elliott M, Lattus J, Aedo S, Meza D, Lois P, Palma V. Netrin-1 acts as a non-canonical angiogenic factor produced by human Wharton's jelly mesenchymal stem cells (WJ-MSC). Stem Cell Res Ther 2017; 8:43. [PMID: 28241866 PMCID: PMC5330133 DOI: 10.1186/s13287-017-0494-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 01/16/2017] [Accepted: 02/08/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Angiogenesis, the process in which new blood vessels are formed from preexisting ones, is highly dependent on the presence of classical angiogenic factors. Recent evidence suggests that axonal guidance proteins and their receptors can also act as angiogenic regulators. Netrin, a family of laminin-like proteins, specifically Netrin-1 and 4, act via DCC/Neogenin-1 and UNC5 class of receptors to promote or inhibit angiogenesis, depending on the physiological context. METHODS Mesenchymal stem cells secrete a broad set of classical angiogenic factors. However, little is known about the expression of non-canonical angiogenic factors such as Netrin-1. The aim was to characterize the possible secretion of Netrin ligands by Wharton's jelly-derived mesenchymal stem cells (WJ-MSC). We evaluated if Netrin-1 presence in the conditioned media from these cells was capable of inducing angiogenesis both in vitro and in vivo, using human umbilical vein endothelial cells (HUVEC) and chicken chorioallantoic membrane (CAM), respectively. In addition, we investigated if the RhoA/ROCK pathway is responsible for the integration of Netrin signaling to control vessel formation. RESULTS The paracrine angiogenic effect of the WJ-MSC-conditioned media is mediated at least in part by Netrin-1 given that pharmacological blockage of Netrin-1 in WJ-MSC resulted in diminished angiogenesis on HUVEC. When HUVEC were stimulated with exogenous Netrin-1 assayed at physiological concentrations (10-200 ng/mL), endothelial vascular migration occurred in a concentration-dependent manner. In line with our determination of Netrin-1 present in WJ-MSC-conditioned media we were able to obtain endothelial tubule formation even in the pg/mL range. Through CAM assays we validated that WJ-MSC-secreted Netrin-1 promotes an increased angiogenesis in vivo. Netrin-1, secreted by WJ-MSC, might mediate its angiogenic effect through specific cell surface receptors on the endothelium, such as UNC5b and/or integrin α6β1, expressed in HUVEC. However, the angiogenic response of Netrin-1 seems not to be mediated through the RhoA/ROCK pathway. CONCLUSIONS Thus, here we show that stromal production of Netrin-1 is a critical component of the vascular regulatory machinery. This signaling event may have deep implications in the modulation of several processes related to a number of diseases where angiogenesis plays a key role in vascular homeostasis.
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Affiliation(s)
- Catalina P. Prieto
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - María Carolina Ortiz
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Andrea Villanueva
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Cynthia Villarroel
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Sandra S. Edwards
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Matías Elliott
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - José Lattus
- Campus Oriente, Department of Obstetrics and Gynecology, Faculty of Medicine, University of Chile, Santiago de Chile, Chile
| | - Sócrates Aedo
- Campus Oriente, Department of Obstetrics and Gynecology, Faculty of Medicine, University of Chile, Santiago de Chile, Chile
| | - Daniel Meza
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Pablo Lois
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Verónica Palma
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
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Sweetman DU. Neonatal acute kidney injury - Severity and recovery prediction and the role of serum and urinary biomarkers. Early Hum Dev 2017; 105:57-61. [PMID: 28089174 DOI: 10.1016/j.earlhumdev.2016.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Neonatal acute kidney injury is common, in part due to incomplete renal maturation and also due to frequent exposure to risk factors for acute kidney injury such as perinatal asphyxia, extracorporeal-membrane-oxygenation, cardiac surgery, sepsis, prematurity and nephrotoxicity. However the current method by which acute kidney injury is diagnosed is sub-optimal and not universally accepted which impairs the accurate estimation of the true incidence of neonatal acute kidney injury. Serum Cystatin-C, urinary NGAL, KIM-1 and IL-18 are promising neonatal acute kidney injury biomarkers however the diagnosis of acute kidney injury remains serum creatinine/urine output-based in many studies. Emerging biomarkers which require further study in the neonatal population include netrin-1 and EGF. Increased awareness amongst clinicians of nephrotoxic medications being a modifiable risk factor for the development of neonatal acute kidney injury is imperative. The burden of chronic kidney failure following neonatal acute kidney injury is unclear and requires further study.
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Affiliation(s)
- Deirdre U Sweetman
- Department of Neonatology, National Maternity Hospital, Holles Street, Dublin 2, Ireland.
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Correlation study of podocyte injury and kidney function in patients with acute kidney injury. JOURNAL OF ACUTE DISEASE 2016. [DOI: 10.1016/j.joad.2016.08.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Taylor L, Brodermann MH, McCaffary D, Iqbal AJ, Greaves DR. Netrin-1 Reduces Monocyte and Macrophage Chemotaxis towards the Complement Component C5a. PLoS One 2016; 11:e0160685. [PMID: 27509208 PMCID: PMC4980032 DOI: 10.1371/journal.pone.0160685] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/24/2016] [Indexed: 01/24/2023] Open
Abstract
Netrin-1, acting at its cognate receptor UNC5b, has been previously demonstrated to inhibit CC chemokine-induced immune cell migration. In line with this, we found that netrin-1 was able to inhibit CCL2-induced migration of bone marrow derived macrophages (BMDMs). However, whether netrin-1 is capable of inhibiting chemotaxis to a broader range of chemoattractants remains largely unexplored. As our initial experiments demonstrated that RAW264.7 and BMDMs expressed high levels of C5a receptor 1 (C5aR1) on their surface, we aimed to determine the effect of netrin-1 exposure on monocyte/macrophage cell migration induced by C5a, a complement peptide that plays a major role in multiple inflammatory pathologies. Treatment of RAW264.7 macrophages, BMDMs and human monocytes with netrin-1 inhibited their chemotaxis towards C5a, as measured using two different real-time methods. This inhibitory effect was found to be dependent on netrin-1 receptor signalling, as an UNC5b blocking antibody was able to reverse netrin-1 inhibition of C5a induced BMDM migration. Treatment of BMDMs with netrin-1 had no effect on C5aR1 proximal signalling events, as surface C5aR1 expression, internalisation and intracellular Ca2+ release following C5aR1 ligation remained unaffected after netrin-1 exposure. We next examined receptor distal events that occur following C5aR1 activation, but found that netrin-1 was unable to inhibit C5a induced phosphorylation of ERK1/2, Akt and p38, pathways important for cellular migration. Furthermore, netrin-1 treatment had no effect on BMDM cytoskeletal rearrangement following C5a stimulation as determined by microscopy and real-time electrical impedance sensing. Taken together these data highlight that netrin-1 inhibits monocyte and macrophage cell migration, but that the mechanism behind this effect remains unresolved. Nevertheless, netrin-1 and its cognate receptors warrant further investigation as they may represent a potential avenue for the development of novel anti-inflammatory therapeutics.
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Affiliation(s)
- Lewis Taylor
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | | | - David McCaffary
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Asif Jilani Iqbal
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - David R. Greaves
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
- * E-mail:
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Woolbright BL, Jaeschke H. Neurologic cues modulate immune-mediated liver injury and regeneration. Hepatology 2016; 63:1427-9. [PMID: 26853091 PMCID: PMC4840026 DOI: 10.1002/hep.28490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 02/02/2016] [Indexed: 12/07/2022]
Affiliation(s)
- Benjamin L Woolbright
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, KS
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, KS
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