151
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Yung AR, Druckenbrod NR, Cloutier JF, Wu Z, Tessier-Lavigne M, Goodrich LV. Netrin-1 Confines Rhombic Lip-Derived Neurons to the CNS. Cell Rep 2018; 22:1666-1680. [PMID: 29444422 PMCID: PMC5877811 DOI: 10.1016/j.celrep.2018.01.068] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 12/13/2017] [Accepted: 01/22/2018] [Indexed: 02/02/2023] Open
Abstract
During brainstem development, newborn neurons originating from the rhombic lip embark on exceptionally long migrations to generate nuclei important for audition, movement, and respiration. Along the way, this highly motile population passes several cranial nerves yet remains confined to the CNS. We found that Ntn1 accumulates beneath the pial surface separating the CNS from the PNS, with gaps at nerve entry sites. In mice null for Ntn1 or its receptor DCC, hindbrain neurons enter cranial nerves and migrate into the periphery. CNS neurons also escape when Ntn1 is selectively lost from the sub-pial region (SPR), and conversely, expression of Ntn1 throughout the mutant hindbrain can prevent their departure. These findings identify a permissive role for Ntn1 in maintaining the CNS-PNS boundary. We propose that Ntn1 confines rhombic lip-derived neurons by providing a preferred substrate for tangentially migrating neurons in the SPR, preventing their entry into nerve roots.
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Affiliation(s)
- Andrea R Yung
- Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | | | - Jean-François Cloutier
- Department of Neurology & Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Zhuhao Wu
- Laboratory of Brain Development & Repair, The Rockefeller University, New York, NY 10065, USA
| | - Marc Tessier-Lavigne
- Department of Neurology & Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Lisa V Goodrich
- Department of Neurobiology, Harvard Medical School, Boston, MA, USA.
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152
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Mata A, Gil V, Pérez-Clausell J, Dasilva M, González-Calixto MC, Soriano E, García-Verdugo JM, Sanchez-Vives MV, Del Río JA. New functions of Semaphorin 3E and its receptor PlexinD1 during developing and adult hippocampal formation. Sci Rep 2018; 8:1381. [PMID: 29358640 PMCID: PMC5777998 DOI: 10.1038/s41598-018-19794-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/08/2018] [Indexed: 12/19/2022] Open
Abstract
The development and maturation of cortical circuits relies on the coordinated actions of long and short range axonal guidance cues. In this regard, the class 3 semaphorins and their receptors have been seen to be involved in the development and maturation of the hippocampal connections. However, although the role of most of their family members have been described, very few data about the participation of Semaphorin 3E (Sema3E) and its receptor PlexinD1 during the development and maturation of the entorhino-hippocampal (EH) connection are available. In the present study, we focused on determining their roles both during development and in adulthood. We determined a relevant role for Sema3E/PlexinD1 in the layer-specific development of the EH connection. Indeed, mice lacking Sema3E/PlexinD1 signalling showed aberrant layering of entorhinal axons in the hippocampus during embryonic and perinatal stages. In addition, absence of Sema3E/PlexinD1 signalling results in further changes in postnatal and adult hippocampal formation, such as numerous misrouted ectopic mossy fibers. More relevantly, we describe how subgranular cells express PlexinD1 and how the absence of Sema3E induces a dysregulation of the proliferation of dentate gyrus progenitors leading to the presence of ectopic cells in the molecular layer. Lastly, Sema3E mutant mice displayed increased network excitability both in the dentate gyrus and the hippocampus proper.
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Affiliation(s)
- Agata Mata
- Molecular and Cellular Neurobiotechnology, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Parc Científic de Barcelona, Barcelona, Spain.,Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, (CIBERNED), Barcelona, Spain.,Institut de Neurociències de la Universitat de Barcelona, Barcelona, Spain
| | - Vanessa Gil
- Molecular and Cellular Neurobiotechnology, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Parc Científic de Barcelona, Barcelona, Spain.,Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, (CIBERNED), Barcelona, Spain.,Institut de Neurociències de la Universitat de Barcelona, Barcelona, Spain
| | - Jeús Pérez-Clausell
- Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain
| | - Miguel Dasilva
- Systems Neuroscience, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Mari Carmen González-Calixto
- Laboratory of Comparative Neurobiology, Institute Cavanilles, University of Valencia, CIBERNED, 46980, Valencia, Spain
| | - Eduardo Soriano
- Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, (CIBERNED), Barcelona, Spain.,Institut de Neurociències de la Universitat de Barcelona, Barcelona, Spain.,ICREA, Barcelona, Spain.,Vall d'Hebrón Institut de Recerca (VHIR), Barcelona, Spain
| | - José Manuel García-Verdugo
- Laboratory of Comparative Neurobiology, Institute Cavanilles, University of Valencia, CIBERNED, 46980, Valencia, Spain
| | - Maria V Sanchez-Vives
- Systems Neuroscience, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,ICREA, Barcelona, Spain
| | - José Antonio Del Río
- Molecular and Cellular Neurobiotechnology, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Parc Científic de Barcelona, Barcelona, Spain. .,Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain. .,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, (CIBERNED), Barcelona, Spain. .,Institut de Neurociències de la Universitat de Barcelona, Barcelona, Spain.
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153
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Netrin-1 promotes metastasis of gastric cancer by regulating YAP activity. Biochem Biophys Res Commun 2018; 496:76-82. [PMID: 29305865 DOI: 10.1016/j.bbrc.2017.12.170] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 12/31/2017] [Indexed: 11/23/2022]
Abstract
Yes-associated protein (YAP) is a major downstream molecular of the Hippo pathway, which plays important role in cancer development. Netrin-1 conveys oncogenic activity in many types of malignant tumors. However, the downstream signaling of netrin-1 mediating its oncogenic effects in gastric cancer (GC) is not well defined. Here, we aim to investigate the role of netrin-1 in metastasis potential of GC by regulating YAP. In this study, we showed that netrin-1 inhibition significantly decreased migration and invasion abilities of GC cells, while netrin-1 overexpression effectively reversed this effect. We also demonstrated that netrin-1 upregulated YAP expression via its transmembrane receptor neogenin. Furthermore, our in vitro and in vivo results showed that the effect of netrin-1 on GC cells migration and invasion abilities was regulated by YAP. Collectively, our results defined netrin-1 as a positive regulator of malignant tumor metastasis in GC by activating the YAP signaling, with potential implications for new approaches to GC therapy.
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154
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Lu Y, Hsiang F, Chang JH, Yao XQ, Zhao H, Zou HY, Wang L, Zhang QX. Houshiheisan and its components promote axon regeneration after ischemic brain injury. Neural Regen Res 2018; 13:1195-1203. [PMID: 30028327 PMCID: PMC6065233 DOI: 10.4103/1673-5374.235031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Houshiheisan, a classic prescription in traditional Chinese medicine, contains Flos Chrysanthemi, Radix Saposhnikoviae, Ramulus Cinnamomi, Rhizoma Chuanxiong, Radix et Rhizoma Asari, Radix Platycodonis, Rhizoma Atractylodis macrocephalae, Poria, Rhizoma Zingiberis, Radix Angelicae sinensis, Radix et Rhizoma Ginseng, Radix Scutellariae and Concha Ostreae. According to traditional Chinese medicine theory, Flos Chrysanthemi, Radix Saposhnikoviae, Ramulus Cinnamomi, Rhizoma Chuanxiong, Radix et Rhizoma Asari and Radix Platycodonis are wind-dispelling drugs; Rhizoma Atractylodis macrocephalae, Poria, Rhizoma Zingiberis, Radix Angelicae sinensis and Radix et Rhizoma Ginseng are deficiency-nourishing drugs. A large number of randomized controlled trials have shown that Houshiheisan is effective in treating stroke, but its mechanism of action is unknown. Axonal remodeling is an important mechanism in neural protection and regeneration. Therefore, this study explored the effect and mechanism of action of Houshiheisan on the repair of axons after cerebral ischemia. Rat models of focal cerebral ischemia were established by ligating the right middle cerebral artery. At 6 hours after model establishment, rats were intragastrically administered 10.5 g/kg Houshiheisan or 7.7 g/kg wind-dispelling drug or 2.59 g/kg deficiency-nourishing drug. These medicines were intragastrically administered as above every 24 hours for 7 consecutive days. Houshiheisan, and its wind-dispelling and deficiency-nourishing components reduced the neurological deficit score and ameliorated axon and neuron lesions after cerebral ischemia. Furthermore, Houshiheisan, and its wind-dispelling and deficiency-nourishing components decreased the expression of proteins that inhibit axonal remodeling: amyloid precursor protein, neurite outgrowth inhibitor protein A (Nogo-A), Rho family small GTPase A (RhoA) and Rho-associated kinase 2 (Rock2), and increased the expression of growth associated protein-43, microtubule-associated protein-2, netrin-1, Ras-related C3 botulinum toxin substrate 1 (Rac1) and cell division cycle 42 (Cdc42). The effect of Houshiheisan was stronger than wind-dispelling drugs or deficiency-nourishing drugs alone. In conclusion, Houshiheisan, and wind-dispelling and deficiency-nourishing drugs promote the repair of axons and nerve regeneration after cerebral ischemia through Nogo-A/RhoA/Rock2 and Netrin-1/Rac1/Cdc42 signaling pathways. These effects are strongest with Houshiheisan.
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Affiliation(s)
- Yue Lu
- School of Traditional Chinese Medicine, Capital Medical University; Beijing Key Lab of TCM Collateral Disease Theory Research, Beijing, China
| | - Flora Hsiang
- School of Traditional Chinese Medicine, Capital Medical University; Beijing Key Lab of TCM Collateral Disease Theory Research, Beijing, China
| | - Jia-Hui Chang
- School of Traditional Chinese Medicine, Capital Medical University; Beijing Key Lab of TCM Collateral Disease Theory Research, Beijing, China
| | - Xiao-Quan Yao
- School of Traditional Chinese Medicine, Capital Medical University; Beijing Key Lab of TCM Collateral Disease Theory Research, Beijing, China
| | - Hui Zhao
- School of Traditional Chinese Medicine, Capital Medical University; Beijing Key Lab of TCM Collateral Disease Theory Research, Beijing, China
| | - Hai-Yan Zou
- School of Traditional Chinese Medicine, Capital Medical University; Beijing Key Lab of TCM Collateral Disease Theory Research, Beijing, China
| | - Lei Wang
- School of Traditional Chinese Medicine, Capital Medical University; Beijing Key Lab of TCM Collateral Disease Theory Research, Beijing, China
| | - Qiu-Xia Zhang
- School of Traditional Chinese Medicine, Capital Medical University; Beijing Key Lab of TCM Collateral Disease Theory Research, Beijing, China
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155
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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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156
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Limerick G, Tang X, Lee WS, Mohamed A, Al-Aamiri A, Wadsworth WG. A Statistically-Oriented Asymmetric Localization (SOAL) Model for Neuronal Outgrowth Patterning by Caenorhabditis elegans UNC-5 (UNC5) and UNC-40 (DCC) Netrin Receptors. Genetics 2018; 208:245-272. [PMID: 29092889 PMCID: PMC5753861 DOI: 10.1534/genetics.117.300460] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 10/29/2017] [Indexed: 01/01/2023] Open
Abstract
Neurons extend processes that vary in number, length, and direction of "outgrowth". Extracellular cues help determine outgrowth patterns. In Caenorhabditis elegans, neurons respond to the extracellular UNC-6 (netrin) cue via UNC-40 (DCC) and UNC-5 (UNC5) receptors. Previously, we presented evidence that UNC-40 asymmetric localization at the plasma membrane is self-organizing, and that UNC-40 can localize and mediate outgrowth at randomly selected sites. Here, we provide further evidence for a statistically-oriented asymmetric localization (SOAL) model in which UNC-5 receptor activity affects patterns of axon outgrowth by regulating UNC-40 asymmetric localization. According to the SOAL model, the direction of outgrowth activity fluctuates across the membrane over time. Random walk modeling predicts that increasing the degree to which the direction of outgrowth fluctuates will decrease the outward displacement of the membrane. By differentially affecting the degree to which the direction of outgrowth activity fluctuates over time, extracellular cues can produce different rates of outgrowth along the surface and create patterns of "extension". Consistent with the SOAL model, we show that unc-5 mutations alter UNC-40 asymmetric localization, increase the degree to which the direction of outgrowth fluctuates, and reduce the extent of outgrowth in multiple directions relative to the source of UNC-6 These results are inconsistent with current models, which predict that UNC-5 mediates a "repulsive" response to UNC-6 Genetic interactions suggest that UNC-5 acts through the UNC-53 (NAV2) cytoplasmic protein to regulate UNC-40 asymmetric localization in response to both the UNC-6 and EGL-20 (Wnt) extracellular cues.
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Affiliation(s)
- Gerard Limerick
- Department of Pathology and Laboratory Medicine, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey 08854
| | - Xia Tang
- Department of Pathology and Laboratory Medicine, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey 08854
| | - Won Suk Lee
- Department of Pathology and Laboratory Medicine, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey 08854
| | - Ahmed Mohamed
- Department of Pathology and Laboratory Medicine, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey 08854
| | - Aseel Al-Aamiri
- Department of Pathology and Laboratory Medicine, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey 08854
| | - William G Wadsworth
- Department of Pathology and Laboratory Medicine, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey 08854
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157
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Sherwood DR, Plastino J. Invading, Leading and Navigating Cells in Caenorhabditis elegans: Insights into Cell Movement in Vivo. Genetics 2018; 208:53-78. [PMID: 29301948 PMCID: PMC5753875 DOI: 10.1534/genetics.117.300082] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 10/26/2017] [Indexed: 12/30/2022] Open
Abstract
Highly regulated cell migration events are crucial during animal tissue formation and the trafficking of cells to sites of infection and injury. Misregulation of cell movement underlies numerous human diseases, including cancer. Although originally studied primarily in two-dimensional in vitro assays, most cell migrations in vivo occur in complex three-dimensional tissue environments that are difficult to recapitulate in cell culture or ex vivo Further, it is now known that cells can mobilize a diverse repertoire of migration modes and subcellular structures to move through and around tissues. This review provides an overview of three distinct cellular movement events in Caenorhabditis elegans-cell invasion through basement membrane, leader cell migration during organ formation, and individual cell migration around tissues-which together illustrate powerful experimental models of diverse modes of movement in vivo We discuss new insights into migration that are emerging from these in vivo studies and important future directions toward understanding the remarkable and assorted ways that cells move in animals.
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Affiliation(s)
- David R Sherwood
- Department of Biology, Regeneration Next, Duke University, Durham, North Carolina 27705
| | - Julie Plastino
- Institut Curie, PSL Research University, CNRS, UMR 168, F-75005 Paris, France
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 168, F-75005 Paris, France
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158
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Liu X, Wang X, Fu SW, Wang M, Kang H, Guan H, Zhang S, Ma X, Lin S, Liu K, Feng Y, Dai C, Dai Z. Genetic association of deleted in colorectal carcinoma variants with breast cancer risk: A case-control study. Oncotarget 2017; 7:32765-73. [PMID: 27127179 PMCID: PMC5078049 DOI: 10.18632/oncotarget.9024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 04/10/2016] [Indexed: 12/29/2022] Open
Abstract
Deleted in colorectal carcinoma (DCC), a netrin-1 dependence receptor, is correlated with cell progression, migration, and adhesion. Evidence indicated that DCC was frequently down-regulated in many cancers. However, the association of DCC with breast cancer remains uncertain. We conducted a case-control study to investigate the impact of three DCC gene variants (rs2229080, rs7504990, and rs4078288) on breast cancer susceptibility in Chinese women. This study included 560 breast cancer patients and 583 age-matched healthy controls from Northwest China. The three gene variants were genotyped via Sequenom MassARRAY. Odds ratios (ORs) and 95% confidence intervals (CIs) were utilized to evaluate the associations. We found that individuals with the rs2229080 C/G, C/C, and C/G-CC genotypes had a higher breast cancer risk, and the minor allele C was associated with increased breast cancer risk in an allele model. We observed a significantly decreased breast cancer risk with the rs7504990 C/T, T/T, and C/T-T/T genotypes, and the minor allele T was protective against breast cancer in an allele model. In addition, rs2229080 was associated with the axillary lymph node (LN) metastasis status. An age-stratified analysis revealed an association between rs2229080 and reduced breast cancer risk among older patients (≥ 49 years). Furthermore, the haplotype analysis showed that the Crs2229080Crs7504990Ars4078288 haplotype was associated with a decreased breast cancer risk. However, the results indicated a lack of association between rs4078288 and breast cancer risk. These findings affirmed that rs2229080 and rs7504990 polymorphisms in DCC might be related with breast cancer susceptibility in Chinese women.
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Affiliation(s)
- Xinghan Liu
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Xijing Wang
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Sidney W Fu
- Division of Genomic Medicine/Department of Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC 20037, USA
| | - Meng Wang
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Huafeng Kang
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Haitao Guan
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Shuqun Zhang
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Xiaobin Ma
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Shuai Lin
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Kang Liu
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Yanjing Feng
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Cong Dai
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Zhijun Dai
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.,Division of Genomic Medicine/Department of Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC 20037, USA
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159
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Spurlin JW, Nelson CM. Building branched tissue structures: from single cell guidance to coordinated construction. Philos Trans R Soc Lond B Biol Sci 2017; 372:rstb.2015.0527. [PMID: 28348257 DOI: 10.1098/rstb.2015.0527] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/01/2016] [Indexed: 12/15/2022] Open
Abstract
Branched networks are ubiquitous throughout nature, particularly found in tissues that require large surface area within a restricted volume. Many tissues with a branched architecture, such as the vasculature, kidney, mammary gland, lung and nervous system, function to exchange fluids, gases and information throughout the body of an organism. The generation of branched tissues requires regulation of branch site specification, initiation and elongation. Branching events often require the coordination of many cells to build a tissue network for material exchange. Recent evidence has emerged suggesting that cell cooperativity scales with the number of cells actively contributing to branching events. Here, we compare mechanisms that regulate branching, focusing on how cell cohorts behave in a coordinated manner to build branched tissues.This article is part of the themed issue 'Systems morphodynamics: understanding the development of tissue hardware'.
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Affiliation(s)
- James W Spurlin
- Departments of Chemical and Biological Engineering, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ 08544, USA
| | - Celeste M Nelson
- Departments of Chemical and Biological Engineering, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ 08544, USA .,Molecular Biology, Princeton University, 303 Hoyt Laboratory, William Street, Princeton, NJ 08544, USA
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160
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Howard LJ, Brown HE, Wadsworth BC, Evans TA. Midline axon guidance in the Drosophila embryonic central nervous system. Semin Cell Dev Biol 2017; 85:13-25. [PMID: 29174915 DOI: 10.1016/j.semcdb.2017.11.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/13/2017] [Accepted: 11/21/2017] [Indexed: 02/02/2023]
Abstract
Studies in the fruit fly Drosophila melanogaster have provided many fundamental insights into the genetic regulation of neural development, including the identification and characterization of evolutionarily conserved axon guidance pathways and their roles in important guidance decisions. Due to its highly organized and fast-developing embryonic nervous system, relatively small number of neurons, and molecular and genetic tools for identifying, labeling, and manipulating individual neurons or small neuronal subsets, studies of axon guidance in the Drosophila embryonic CNS have allowed researchers to dissect these genetic mechanisms with a high degree of precision. In this review, we discuss the major axon guidance pathways that regulate midline crossing of axons and the formation and guidance of longitudinal axon tracts, two processes that contribute to the development of the precise three-dimensional structure of the insect nerve cord. We focus particularly on recent insights into the roles and regulation of canonical midline axon guidance pathways, and on additional factors and pathways that have recently been shown to contribute to axon guidance decisions at and near the midline.
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Affiliation(s)
- LaFreda J Howard
- Department of Biological Sciences, University of Arkansas, Fayetteville AR 72701, USA
| | - Haley E Brown
- Department of Biological Sciences, University of Arkansas, Fayetteville AR 72701, USA
| | - Benjamin C Wadsworth
- Department of Biological Sciences, University of Arkansas, Fayetteville AR 72701, USA
| | - Timothy A Evans
- Department of Biological Sciences, University of Arkansas, Fayetteville AR 72701, USA.
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161
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Bai L, Mei X, Wang Y, Yuan Y, Bi Y, Li G, Wang H, Yan P, Lv G. The Role of Netrin-1 in Improving Functional Recovery through Autophagy Stimulation Following Spinal Cord Injury in Rats. Front Cell Neurosci 2017; 11:350. [PMID: 29209172 PMCID: PMC5701630 DOI: 10.3389/fncel.2017.00350] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 10/23/2017] [Indexed: 12/17/2022] Open
Abstract
Our previous findings indicated that treatment with Netrin-1 could improve functional recovery through the stimulation of autophagy, by activating the AMP-activated protein kinase/mammalian target of rapamycin (AMPK/mTOR) signaling pathway in rats following spinal cord injury (SCI). However, the underlying mechanisms were not elucidated. The purpose of this study was to investigate the underlying mechanisms by which Netrin-1 promotes autophagy and improves functional recovery after SCI. Following controlled SCI in Sprague-Dawley rats, we observed that the autophagic flux in neurons was impaired, as reflected by the accumulation of light chain 3-II (LC3-II)-positive and LC3-positive autophagosomes (APs), accompanied by the accumulation of the autophagic substrate, Sequestosome 1 (SQSTM1; also known as p62). Our results showed that treatment with Netrin-1 increases the levels of the lysosomal protease cathepsin D (CTSD) and lysosomal-associated membrane protein 1 (LAMP1), through the regulation of the nuclear localization of Transcription factor EB (TFEB) via the AMPK/mTOR signaling pathway. In addition, this enhancement of lysosomal biogenesis correlated strongly with the restoration of autophagic flux, inhibition of neural apoptosis and improved functional recovery. Suppression of lysosomal biogenesis via the inhibition of the nuclear translocation of TFEB by Compound C abolished this restoration of autophagic flux and the functional recovery effects of Netrin-1 following SCI. Taken together, these results indicate that Netrin-1 enhances lysosomal biogenesis by regulating the nuclear translocation of TFEB via the AMPK/mTOR signaling pathway. Furthermore, the enhancement of lysosomal biogenesis by Netrin-1 following SCI promotes autophagic flux and improves functional recovery in rats. Thus, the regulation of lysosomal biogenesis by modulating the nuclear localization of TFEB might be a novel approach for the treatment of SCI.
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Affiliation(s)
- Liangjie Bai
- Department of Orthopedics, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xifan Mei
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Yanfeng Wang
- Department of Orthopedics, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yajiang Yuan
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Yunlong Bi
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Gang Li
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Hongyu Wang
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Peng Yan
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Gang Lv
- Department of Orthopedics, The First Affiliated Hospital of China Medical University, Shenyang, China
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162
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Abstract
Varadarajan et al. (2017)-in this issue of Neuron-and Dominici et al. (2017)-published online at Nature-independently show that floor plate-derived netrin-1 is dispensable for commissural neuron axon guidance to the CNS midline during development.
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Affiliation(s)
- Randal A Hand
- The Solomon H. Snyder Department of Neuroscience and Howard Hughes Medical Institute, The Johns Hopkins School of Medicine, Baltimore, MD 21205, USA.
| | - Alex L Kolodkin
- The Solomon H. Snyder Department of Neuroscience and Howard Hughes Medical Institute, The Johns Hopkins School of Medicine, Baltimore, MD 21205, USA.
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163
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Huang H, Lin F, Jiang J, Chen Y, Mei A, Zhu P. Effects of intra-arterial transplantation of adipose-derived stem cells on the expression of netrin-1 and its receptor DCC in the peri-infarct cortex after experimental stroke. Stem Cell Res Ther 2017; 8:223. [PMID: 29017609 PMCID: PMC5633888 DOI: 10.1186/s13287-017-0671-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 09/11/2017] [Accepted: 09/13/2017] [Indexed: 12/16/2022] Open
Abstract
Background Stem cell transplantation has been documented to promote functional recovery in animal models of stroke; however, the underlying mechanisms are not yet fully understood. As netrin-1 and its receptor deleted in colorectal cancer (DCC) are important regulators in neuronal and vascular activities, the present study attempted to explore whether netrin-1 and DCC are involved in the neuroprotection of stem cell-based therapies in a rat ischemic stroke model. Methods Adult male Sprague–Dawley rats were subjected to a transient middle cerebral artery occlusion (MCAO) and subsequently received an intra-arterial injection of 2 × 106 PKH26-labeled adipose-derived stem cells (ADSCs) or saline 24 h later. Neurological function was evaluated by behavioral tests before the rats were sacrificed at days 7 and 14 after MCAO. The migration of ADSCs and regeneration of neuronal fibers and blood vessels were determined by immunofluorescence staining. The expression of netrin-1 and DCC was analyzed by Western blot and immunofluorescence staining. Results ADSC transplantation significantly improved the neurological recovery at days 7 and 14, and noticeably promoted the regeneration of neuronal fibers and blood vessels in the peri-infarct cortex at day 14. PKH26-labeled ADSCs located mainly in the peri-infarct area at days 7 and 14. In ADSC-treated rats, the expression of netrin-1 and DCC significantly increased in the peri-infarct cortex at days 7 and 14. Immunofluorescence staining showed that netrin-1 was mainly expressed by neuronal perikaryal in the peri-infarct cortex, and DCC was mainly expressed by neuronal fibers and was present around the blood vessels in the peri-infarct cortex. Conclusions These findings suggest that ADSC transplantation facilitates the regeneration of neuronal fibers and blood vessels in the peri-infarct cortex and improves neurological functions, which may be attributed, at least in part, to the involvement of upregulated netrin-1 and DCC in the remodeling of neuronal and vascular networks in the peri-infarct cortex.
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Affiliation(s)
- Huan Huang
- Department of Geriatric Medicine, Fujian Provincial Hospital, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.,Provincial Clinical Medical College of Fujian Medical University, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.,Fujian Key Laboratory of Geriatrics, 134 Dongjie Road, Fuzhou, Fujian, 350001, China
| | - Fan Lin
- Department of Geriatric Medicine, Fujian Provincial Hospital, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.,Provincial Clinical Medical College of Fujian Medical University, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.,Fujian Key Laboratory of Geriatrics, 134 Dongjie Road, Fuzhou, Fujian, 350001, China
| | - Jingjing Jiang
- Department of Geriatric Medicine, Fujian Provincial Hospital, 134 Dongjie Road, Fuzhou, Fujian, 350001, China
| | - Yan Chen
- Department of Geriatric Medicine, Fujian Provincial Hospital, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.,Provincial Clinical Medical College of Fujian Medical University, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.,Fujian Key Laboratory of Geriatrics, 134 Dongjie Road, Fuzhou, Fujian, 350001, China
| | - Ainong Mei
- Department of Geriatric Medicine, Fujian Provincial Hospital, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.,Provincial Clinical Medical College of Fujian Medical University, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.,Fujian Key Laboratory of Geriatrics, 134 Dongjie Road, Fuzhou, Fujian, 350001, China
| | - Pengli Zhu
- Department of Geriatric Medicine, Fujian Provincial Hospital, 134 Dongjie Road, Fuzhou, Fujian, 350001, China. .,Provincial Clinical Medical College of Fujian Medical University, 134 Dongjie Road, Fuzhou, Fujian, 350001, China. .,Fujian Key Laboratory of Geriatrics, 134 Dongjie Road, Fuzhou, Fujian, 350001, China.
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164
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Abstract
Thyroid hormones are crucial for organismal development and homeostasis. In humans, untreated congenital hypothyroidism due to thyroid agenesis inevitably leads to cretinism, which comprises irreversible brain dysfunction and dwarfism. Elucidating how the thyroid gland - the only source of thyroid hormones in the body - develops is thus key for understanding and treating thyroid dysgenesis, and for generating thyroid cells in vitro that might be used for cell-based therapies. Here, we review the principal mechanisms involved in thyroid organogenesis and functional differentiation, highlighting how the thyroid forerunner evolved from the endostyle in protochordates to the endocrine gland found in vertebrates. New findings on the specification and fate decisions of thyroid progenitors, and the morphogenesis of precursor cells into hormone-producing follicular units, are also discussed.
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Affiliation(s)
- Mikael Nilsson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Henrik Fagman
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden.,Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Göteborg SE-41345, Sweden
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165
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Feinstein J, Ramkhelawon B. Netrins & Semaphorins: Novel regulators of the immune response. Biochim Biophys Acta Mol Basis Dis 2017; 1863:3183-3189. [PMID: 28918114 DOI: 10.1016/j.bbadis.2017.09.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 09/11/2017] [Accepted: 09/12/2017] [Indexed: 12/26/2022]
Abstract
Netrins and semaphorins, members of the neuronal guidance cue family, exhibit a rich biology with significant roles that extend beyond chemotactic guidance of the axons to build the neuronal patterns of the body. Screening of adult tissues and specific cellular subsets have illuminated that these proteins are also abundantly expressed under both steady state and pathological scenarios. This observation suggests that, in addition to their role in the development of the axonal tree, these proteins possess additional novel functions in adult physiopathology. Notably, a series of striking evidence has emerged in the literature describing their roles as potent regulators of both innate and adaptive immunity, providing extra dimension to our knowledge of neuronal guidance cues. In this review, we summarize the key complex roles of netrins and semaphorins outside the central nervous system (CNS) with focus on their immunomodulatory functions that impact pathophysiological conditions.
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Affiliation(s)
- Jordyn Feinstein
- Division of Vascular Surgery, Department of Surgery, New York University School of Medicine, 530 First Avenue, New York, NY 10016, USA; Department of Cell Biology, New York University School of Medicine, 530 First Avenue, New York, NY 10016, USA
| | - Bhama Ramkhelawon
- Division of Vascular Surgery, Department of Surgery, New York University School of Medicine, 530 First Avenue, New York, NY 10016, USA; Department of Cell Biology, New York University School of Medicine, 530 First Avenue, New York, NY 10016, USA.
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166
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Flavin monooxygenases regulate Caenorhabditis elegans axon guidance and growth cone protrusion with UNC-6/Netrin signaling and Rac GTPases. PLoS Genet 2017; 13:e1006998. [PMID: 28859089 PMCID: PMC5597259 DOI: 10.1371/journal.pgen.1006998] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 09/13/2017] [Accepted: 08/25/2017] [Indexed: 01/05/2023] Open
Abstract
The guidance cue UNC-6/Netrin regulates both attractive and repulsive axon guidance. Our previous work showed that in C. elegans, the attractive UNC-6/Netrin receptor UNC-40/DCC stimulates growth cone protrusion, and that the repulsive receptor, an UNC-5:UNC-40 heterodimer, inhibits growth cone protrusion. We have also shown that inhibition of growth cone protrusion downstream of the UNC-5:UNC-40 repulsive receptor involves Rac GTPases, the Rac GTP exchange factor UNC-73/Trio, and the cytoskeletal regulator UNC-33/CRMP, which mediates Semaphorin-induced growth cone collapse in other systems. The multidomain flavoprotein monooxygenase (FMO) MICAL (Molecule Interacting with CasL) also mediates growth cone collapse in response to Semaphorin by directly oxidizing F-actin, resulting in depolymerization. The C. elegans genome does not encode a multidomain MICAL-like molecule, but does encode five flavin monooxygenases (FMO-1, -2, -3, -4, and 5) and another molecule, EHBP-1, similar to the non-FMO portion of MICAL. Here we show that FMO-1, FMO-4, FMO-5, and EHBP-1 may play a role in UNC-6/Netrin directed repulsive guidance mediated through UNC-40 and UNC-5 receptors. Mutations in fmo-1, fmo-4, fmo-5, and ehbp-1 showed VD/DD axon guidance and branching defects, and variably enhanced unc-40 and unc-5 VD/DD axon guidance defects. Developing growth cones in vivo of fmo-1, fmo-4, fmo-5, and ehbp-1 mutants displayed excessive filopodial protrusion, and transgenic expression of FMO-5 inhibited growth cone protrusion. Mutations suppressed growth cone inhibition caused by activated UNC-40 and UNC-5 signaling, and activated Rac GTPase CED-10 and MIG-2, suggesting that these molecules are required downstream of UNC-6/Netrin receptors and Rac GTPases. From these studies we conclude that FMO-1, FMO-4, FMO-5, and EHBP-1 represent new players downstream of UNC-6/Netrin receptors and Rac GTPases that inhibit growth cone filopodial protrusion in repulsive axon guidance. Mechanisms that guide axons to their targets in the developing nervous system have been elucidated, but how these pathways affect behavior of the growth cone of the axon during outgrowth remains poorly understood. We previously showed that the guidance cue UNC-6/Netrin and its receptors UNC-40/DCC and UNC-5 inhibit lamellipodial and filopodial growth cone protrusion to mediate repulsion from UNC-6/Netrin in C. elegans. Here we report a new mechanism downstream of UNC-6/Netrin involving flavin monooxygenase redox enzymes (FMOs). We show that FMOs are normally required for axon guidance and to inhibit growth cone protrusion. Furthermore, we show that they are required for the anti-protrusive effects of activated UNC-40 and UNC-5 receptors, and that they can partially compensate for loss of molecules in the pathway, indicating that they act downstream of UNC-6/Netrin signaling. Based on the function of the FMO-containing MICAL molecules in Drosophila and vertebrates, we speculate that the FMOs might directly oxidize actin, leading to filament disassembly and collapse, and/or lead to the phosphorylation of UNC-33/CRMP, which we show also genetically interacts with the FMOs downstream of UNC-6/Netrin. In conclusion, this is the first evidence that FMOs might act downstream of UNC-6/Netrin signaling in growth cone protrusion and axon repulsion.
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167
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Nishitani AM, Ohta S, Yung AR, Del Rio T, Gordon MI, Abraira VE, Avilés EC, Schoenwolf GC, Fekete DM, Goodrich LV. Distinct functions for netrin 1 in chicken and murine semicircular canal morphogenesis. Development 2017; 144:3349-3360. [PMID: 28851705 DOI: 10.1242/dev.144519] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 08/11/2017] [Indexed: 12/16/2022]
Abstract
The vestibular system of the inner ear detects head position using three orthogonally oriented semicircular canals; even slight changes in their shape and orientation can cause debilitating behavioral defects. During development, the canals are sculpted from pouches that protrude from the otic vesicle, the embryonic anlage of the inner ear. In the center of each pouch, a fusion plate forms where cells lose their epithelial morphology and the basement membrane breaks down. Cells in the fusing epithelia intercalate and are removed, creating a canal. In mice, fusion depends on the secreted protein netrin 1 (Ntn1), which is necessary for basement membrane breakdown, although the underlying molecular mechanism is unknown. Using gain-of-function approaches, we found that overexpression of Ntn1 in the chick otic vesicle prevented canal fusion by inhibiting apoptosis. In contrast, ectopic expression of the same chicken Ntn1 in the mouse otic vesicle, where apoptosis is less prominent, resulted in canal truncation. These findings highlight the importance of apoptosis for tissue morphogenesis and suggest that Ntn1 may play divergent cellular roles despite its conserved expression during canal morphogenesis in chicken and mouse.
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Affiliation(s)
| | - Sho Ohta
- Departments of Neurobiology and Anatomy, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Andrea R Yung
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Tony Del Rio
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Michael I Gordon
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Victoria E Abraira
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Evelyn C Avilés
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Gary C Schoenwolf
- Departments of Neurobiology and Anatomy, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Donna M Fekete
- Department of Biological Sciences and Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA
| | - Lisa V Goodrich
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
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168
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Voortman MM, Pekar T, Bachmayer D, Archelos JJ, Stojakovic T, Scharnagl H, Ropele S, Pichler A, Enzinger C, Fuchs S, Fazekas F, Seifert-Held T, Khalil M. Serum netrin-1 in relation to gadolinium-enhanced magnetic resonance imaging in early multiple sclerosis. Mult Scler J Exp Transl Clin 2017; 3:2055217317727294. [PMID: 28856010 PMCID: PMC5571769 DOI: 10.1177/2055217317727294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 07/28/2017] [Indexed: 11/17/2022] Open
Abstract
Background Netrin-1, a secreted laminin-related protein, is known to regulate not only axonal guidance and neuronal cell migration, but also blood–brain barrier integrity and inflammation. Two preliminary studies reported altered serum netrin-1 levels in multiple sclerosis; however, associations with longitudinal clinical and magnetic resonance imaging activity have not been investigated. Objectives We aimed to assess serum netrin-1 in multiple sclerosis and controls with respect to disease activity and its temporal dynamics. Methods Serum netrin-1 was assessed by enzyme-linked immunosorbent assay in 79 patients with clinically isolated syndrome or multiple sclerosis, and 30 non-inflammatory neurological disease controls. In patients, serum samples were collected immediately prior to gadolinium-enhanced 3 T magnetic resonance imaging at two time points (initial contrast-enhancing gadolinium+ n = 47, non-enhancing gadolinium– n = 32; reference gadolinium– n = 70; median time-lag 1.4, interquartile range 1.0–2.3 years). Results Serum netrin-1 levels were similar in clinically isolated syndrome, multiple sclerosis and controls, and gadolinium+ and gadolinium– patients. Among gadolinium+ patients, serum netrin-1 was decreased in clinically active (n = 8) vs non-active patients (n = 39; p = 0.041). Serum netrin-1 showed no temporal dynamics in multiple sclerosis and was unrelated to clinical data. Conclusions Serum netrin-1 levels show no multiple sclerosis specific changes and are not sensitive for detection of subclinical disease activity. Netrin-1 changes during relapses may deserve further examination.
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Affiliation(s)
- M M Voortman
- Department of Neurology, Medical University of Graz, Austria
| | - T Pekar
- University of Applied Sciences Wiener Neustadt, Austria
| | | | - J-J Archelos
- Department of Neurology, Medical University of Graz, Austria
| | - T Stojakovic
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
| | - H Scharnagl
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Austria
| | - S Ropele
- Department of Neurology, Medical University of Graz, Austria
| | - A Pichler
- Department of Neurology, Medical University of Graz, Austria
| | - C Enzinger
- Department of Neurology, Medical University of Graz, Austria
| | - S Fuchs
- Department of Neurology, Medical University of Graz, Austria
| | - F Fazekas
- Department of Neurology, Medical University of Graz, Austria
| | - T Seifert-Held
- Department of Neurology, Medical University of Graz, Austria
| | - M Khalil
- Department of Neurology, Medical University of Graz, Austria
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169
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Gopal AA, Ricoult SG, Harris SN, Juncker D, Kennedy TE, Wiseman PW. Spatially Selective Dissection of Signal Transduction in Neurons Grown on Netrin-1 Printed Nanoarrays via Segmented Fluorescence Fluctuation Analysis. ACS NANO 2017; 11:8131-8143. [PMID: 28679208 DOI: 10.1021/acsnano.7b03004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Axonal growth cones extend during neural development in response to precise distributions of extracellular cues. Deleted in colorectal cancer (DCC), a receptor for the chemotropic guidance cue netrin-1, directs F-actin reorganization, and is essential for mammalian neural development. To elucidate how the extracellular distribution of netrin-1 influences the distribution of DCC and F-actin within axonal growth cones, we patterned nanoarrays of substrate bound netrin-1 using lift-off nanocontact printing. The distribution of DCC and F-actin in embryonic rat cortical neuron growth cones was then imaged using total internal reflection fluorescence (TIRF) microscopy. Fluorescence fluctuation analysis via image cross-correlation spectroscopy (ICCS) was applied to extract the molecular density and aggregation state of DCC and F-actin, identifying the fraction of DCC and F-actin colocalizing with the patterned netrin-1 substrate. ICCS measurement of spatially segmented images based on the substrate nanodot patterns revealed distinct molecular distributions of F-actin and DCC in regions directly overlying the nanodots compared to over the reference surface surrounding the nanodots. Quantifiable variations between the populations of DCC and F-actin on and off the nanodots reveal specific responses to the printed protein substrate. We report that nanodots of substrate-bound netrin-1 locally recruit and aggregate DCC and direct F-actin organization. These effects were blocked by tetanus toxin, consistent with netrin-1 locally recruiting DCC to the plasma membrane via a VAMP2-dependent mechanism. Our findings demonstrate the utility of segmented ICCS image analysis, combined with precisely patterned immobilized ligands, to reveal local receptor distribution and signaling within specialized subcellular compartments.
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Affiliation(s)
- Angelica A Gopal
- Department of Chemistry, ‡Department of Neurology and Neurosurgery, Montreal Neurological Institute, §Department of Biomedical Engineering, Genome Quebec Innovation Centre, and ∥Department of Physics, McGill University , Montreal, Quebec H3A 0G4 Canada
| | - Sebastien G Ricoult
- Department of Chemistry, ‡Department of Neurology and Neurosurgery, Montreal Neurological Institute, §Department of Biomedical Engineering, Genome Quebec Innovation Centre, and ∥Department of Physics, McGill University , Montreal, Quebec H3A 0G4 Canada
| | - Stephanie N Harris
- Department of Chemistry, ‡Department of Neurology and Neurosurgery, Montreal Neurological Institute, §Department of Biomedical Engineering, Genome Quebec Innovation Centre, and ∥Department of Physics, McGill University , Montreal, Quebec H3A 0G4 Canada
| | - David Juncker
- Department of Chemistry, ‡Department of Neurology and Neurosurgery, Montreal Neurological Institute, §Department of Biomedical Engineering, Genome Quebec Innovation Centre, and ∥Department of Physics, McGill University , Montreal, Quebec H3A 0G4 Canada
| | - Timothy E Kennedy
- Department of Chemistry, ‡Department of Neurology and Neurosurgery, Montreal Neurological Institute, §Department of Biomedical Engineering, Genome Quebec Innovation Centre, and ∥Department of Physics, McGill University , Montreal, Quebec H3A 0G4 Canada
| | - Paul W Wiseman
- Department of Chemistry, ‡Department of Neurology and Neurosurgery, Montreal Neurological Institute, §Department of Biomedical Engineering, Genome Quebec Innovation Centre, and ∥Department of Physics, McGill University , Montreal, Quebec H3A 0G4 Canada
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170
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Abstract
p53 is best identified as a tumor suppressor for its transcriptional control of genes involved in cell cycle progression and apoptosis. Beyond its irrefutable involvement in restraining unchecked cell proliferation, research over the past several years has indicated a requirement for p53 function in sustaining normal development. Here I summarize the role of p53 in embryonic development, with a focus on knowledge gained from p53 loss and overexpression during kidney development. In contrast to its classical role in suppressing proliferative pathways, p53 positively regulates nephron progenitor cell (NPC) renewal. Emerging evidence suggests p53 may control cell fate decisions by preserving energy metabolism homeostasis of progenitors in the nephrogenic niche. Maintaining a critical level of p53 function appears to be a prerequisite for optimal nephron endowment. Defining the molecular networks targeted by p53 in the NPC may well provide new targets not only for regenerative medicine but also for cancer treatment.
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Affiliation(s)
- Zubaida Saifudeen
- Department of Pediatrics, Section of Pediatric Nephrology, Tulane University School of Medicine, 1430 Tulane Avenue, SL37, New Orleans, LA, 70112, USA.
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171
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Hernandez-Morato I, Koss S, Sharma S, Pitman MJ. Influence of Netrin-1 on reinnervation of laryngeal muscles following recurrent laryngeal nerve injury. Neurosci Lett 2017; 653:244-249. [DOI: 10.1016/j.neulet.2017.05.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 04/16/2017] [Accepted: 05/16/2017] [Indexed: 10/19/2022]
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172
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Zhang X, Xu L, Tian H, Wang C, Wang W, Ru S. Monocrotophos, an organophosphorus insecticide, disrupts the expression of HpNetrin and its receptor neogenin during early development in the sea urchin (Hemicentrotus pulcherrimus). Neurotoxicology 2017. [PMID: 28645554 DOI: 10.1016/j.neuro.2017.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Netrins, chemotropic guidance cues, can guide the extension of serotonergic axons by binding to netrin receptors during neural development. However, little is known about whether disruption of netrin signaling is involved in the mechanisms by which organophosphorus pesticides affect serotonergic nervous system (SNS) development. In this study, we evaluated the effects of the pesticide monocrotophos (MCP) on the expression patterns of HpNetrin and its receptor neogenin as well as on the intracellular calcium ion (Ca2+) levels in Hemicentrotus pulcherrimus (sea urchin) by exposing fertilized embryos to 0, 0.01, 0.10, and 1.00mg/L MCP. The results showed that MCP disrupted HpNetrin and neogenin expression at different developmental stages in H. pulcherrimus and that Ca2+ appeared to be involved in the MCP-induced developmental neurotoxicity. Specifically, the lower concentrations of MCP elevated HpNetrin and neogenin transcription, resulting in higher intracellular Ca2+ levels during the early developmental stages in the sea urchin; this may affect netrin-directed cell migration/axon extension and subsequently disrupt serotonergic axon branching and synapse formation. In contrast, 1.00mg/L MCP exhibited an inhibitory effect on HpNetrin and neogenin transcription. This finding implies that the regulatory roles of these factors may be diminished during early development, thereby causing developmental defects in the sea urchin. Collectively, our results provide a basis for exploring the involvement of netrin and neogenin in the organophosphate-induced disruption of the SNS during development.
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Affiliation(s)
- Xiaona Zhang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Lei Xu
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Hua Tian
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Cuicui Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Wei Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
| | - Shaoguo Ru
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
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173
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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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174
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Salvalaio M, D'Avanzo F, Rigon L, Zanetti A, D'Angelo M, Valle G, Scarpa M, Tomanin R. Brain RNA-Seq Profiling of the Mucopolysaccharidosis Type II Mouse Model. Int J Mol Sci 2017; 18:ijms18051072. [PMID: 28513549 PMCID: PMC5454982 DOI: 10.3390/ijms18051072] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/05/2017] [Accepted: 05/08/2017] [Indexed: 11/16/2022] Open
Abstract
Lysosomal storage disorders (LSDs) are a group of about 50 genetic metabolic disorders, mainly affecting children, sharing the inability to degrade specific endolysosomal substrates. This results in failure of cellular functions in many organs, including brain that in most patients may go through progressive neurodegeneration. In this study, we analyzed the brain of the mouse model for Hunter syndrome, a LSD mostly presenting with neurological involvement. Whole transcriptome analysis of the cerebral cortex and midbrain/diencephalon/hippocampus areas was performed through RNA-seq. Genes known to be involved in several neurological functions showed a significant differential expression in the animal model for the disease compared to wild type. Among the pathways altered in both areas, axon guidance, calcium homeostasis, synapse and neuroactive ligand-receptor interaction, circadian rhythm, neuroinflammation and Wnt signaling were the most significant. Application of RNA sequencing to dissect pathogenic alterations of complex syndromes allows to photograph perturbations, both determining and determined by these disorders, which could simultaneously occur in several metabolic and biochemical pathways. Results also emphasize the common, altered pathways between neurodegenerative disorders affecting elderly and those associated with pediatric diseases of genetic origin, perhaps pointing out a general common course for neurodegeneration, independent from the primary triggering cause.
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Affiliation(s)
- Marika Salvalaio
- Women's and Children's Health Department, University of Padova, Via Giustiniani 3, 35128 Padova, Italy.
- Pediatric Research Institute-Città della Speranza, Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Francesca D'Avanzo
- Women's and Children's Health Department, University of Padova, Via Giustiniani 3, 35128 Padova, Italy.
- Pediatric Research Institute-Città della Speranza, Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Laura Rigon
- Women's and Children's Health Department, University of Padova, Via Giustiniani 3, 35128 Padova, Italy.
- Pediatric Research Institute-Città della Speranza, Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Alessandra Zanetti
- Women's and Children's Health Department, University of Padova, Via Giustiniani 3, 35128 Padova, Italy.
- Pediatric Research Institute-Città della Speranza, Corso Stati Uniti 4, 35127 Padova, Italy.
| | - Michela D'Angelo
- CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy.
| | - Giorgio Valle
- CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy.
| | - Maurizio Scarpa
- Women's and Children's Health Department, University of Padova, Via Giustiniani 3, 35128 Padova, Italy.
- Pediatric Research Institute-Città della Speranza, Corso Stati Uniti 4, 35127 Padova, Italy.
- Brains for Brain Foundation, Via Giustiniani 3, 35128 Padova, Italy.
| | - Rosella Tomanin
- Women's and Children's Health Department, University of Padova, Via Giustiniani 3, 35128 Padova, Italy.
- Pediatric Research Institute-Città della Speranza, Corso Stati Uniti 4, 35127 Padova, Italy.
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175
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Yin K, Wang L, Zhang X, He Z, Xia Y, Xu J, Wei S, Li B, Li Z, Sun G, Li Q, Xu H, Xu Z. Netrin-1 promotes gastric cancer cell proliferation and invasion via the receptor neogenin through PI3K/AKT signaling pathway. Oncotarget 2017; 8:51177-51189. [PMID: 28881639 PMCID: PMC5584240 DOI: 10.18632/oncotarget.17750] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 04/27/2017] [Indexed: 12/18/2022] Open
Abstract
Netrin-1 is a laminin-related protein found to promote proliferation and invasion in multiple types of cancers. Recent studies have identified the function role of netrin-1 in several cancers; however, the influence of netrin-1 in human gastric cancer(GC) remains largely unknown. In this study, we found netrin-1 was upregulated in human GC tissues, where its expression correlated inversely with cancer stage and lymph node metastasis. We detected netrin-1 and its receptor knockdown significantly suppressed GC cells proliferation and invasion, while overexpression netrin-1 reversed these effects. Xenografted analyses using GC cells displayed significantly inhibition of tumor growth and metastasis by netrin-1 depletion. Furthermore, we identified that netrin-1 as a regulator of PI3K/AKT pathway to modulate GC cells proliferation and invasion abilities via its receptor neogenin. Taken together, our findings argued that netrin-1 and its receptor neogenin might act synergistically in promoting GC cells proliferation and invasion through the PI3K/AKT signaling pathway. It is conceivable that netrin-1 could be new therapeutic target to GC therapy.
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Affiliation(s)
- Kai Yin
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Linjun Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xuan Zhang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Hepatobiliary Surgery, Wuhu No.2 People 's Hospital, Wuhu, Anhui, China
| | - Zhongyuan He
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yiwen Xia
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jianghao Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Song Wei
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Bowen Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zheng Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Guangli Sun
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qing Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hao Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zekuan Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Collaborative Innovation Center For Cancer Personalized Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
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176
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Uncoupling of UNC5C with Polymerized TUBB3 in Microtubules Mediates Netrin-1 Repulsion. J Neurosci 2017; 37:5620-5633. [PMID: 28483977 DOI: 10.1523/jneurosci.2617-16.2017] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 04/22/2017] [Accepted: 04/28/2017] [Indexed: 11/21/2022] Open
Abstract
Modulation of microtubule (MT) dynamics is a key event of cytoskeleton remodeling in the growth cone (GC) during axon outgrowth and pathfinding. Our previous studies have shown that the direct interaction of netrin receptor DCC and DSCAM with polymerized TUBB3, a neuron-specific MT subunit in the brain, is required for netrin-1-mediated axon outgrowth, branching, and attraction. Here, we show that uncoupling of polymerized TUBB3 with netrin-1-repulsive receptor UNC5C is involved in netrin-1-mediated axonal repulsion. TUBB3 directly interacted with UNC5C and partially colocalized with UNC5C in the peripheral area of the GC of primary neurons from the cerebellar external granule layer of P2 mouse pups of both sexes. Netrin-1 reduced this interaction as well as the colocalization of UNC5C and TUBB3 in the GC. Results from the in vitro cosedimentation assay indicated that UNC5C interacted with polymerized TUBB3 in MTs and netrin-1 decreased this interaction. Knockdown of either TUBB3 or UNC5C blocked netrin-1-promoted axon repulsion in vitro and caused defects in axon projection of DRG toward the spinal cord in vivo Furthermore, live-cell imaging of end-binding protein 3 tagged with EGFP (EB3-GFP) in primary external granule layer cells showed that netrin-1 differentially increased MT dynamics in the GC with more MT growth in the distal than the proximal region of the GC during repulsion, and knockdown of either UNC5C or TUBB3 abolished the netrin-1 effect. Together, these data indicate that the disengagement of UNC5C with polymerized TUBB3 plays an essential role in netrin-1/UNC5C-mediated axon repulsion.SIGNIFICANCE STATEMENT Proper regulation of microtubule (MT) dynamics in the growth cone plays an important role in axon guidance. However, whether guidance cues modulate MT dynamics directly or indirectly is unclear. Here, we report that dissociation of UNC5C and polymerized TUBB3, the highly dynamic β-tubulin isoform in neurons, is essential for netrin-1/UNC5C-promoted axon repulsion. These results not only provide a working model of direct modulation of MTs by guidance cues in growth cone navigation but also help us to understand molecular mechanisms underlying developmental brain disorders associated with TUBB3 mutations.
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177
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Varadarajan SG, Kong JH, Phan KD, Kao TJ, Panaitof SC, Cardin J, Eltzschig H, Kania A, Novitch BG, Butler SJ. Netrin1 Produced by Neural Progenitors, Not Floor Plate Cells, Is Required for Axon Guidance in the Spinal Cord. Neuron 2017; 94:790-799.e3. [PMID: 28434801 DOI: 10.1016/j.neuron.2017.03.007] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 01/12/2017] [Accepted: 02/22/2017] [Indexed: 02/06/2023]
Abstract
Netrin1 has been proposed to act from the floor plate (FP) as a long-range diffusible chemoattractant for commissural axons in the embryonic spinal cord. However, netrin1 mRNA and protein are also present in neural progenitors within the ventricular zone (VZ), raising the question of which source of netrin1 promotes ventrally directed axon growth. Here, we use genetic approaches in mice to selectively remove netrin from different regions of the spinal cord. Our analyses show that the FP is not the source of netrin1 directing axons to the ventral midline, while local VZ-supplied netrin1 is required for this step. Furthermore, rather than being present in a gradient, netrin1 protein accumulates on the pial surface adjacent to the path of commissural axon extension. Thus, netrin1 does not act as a long-range secreted chemoattractant for commissural spinal axons but instead promotes ventrally directed axon outgrowth by haptotaxis, i.e., directed growth along an adhesive surface.
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Affiliation(s)
- Supraja G Varadarajan
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Neuroscience Interdisciplinary Graduate Program, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jennifer H Kong
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Neuroscience Interdisciplinary Graduate Program, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Keith D Phan
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Tzu-Jen Kao
- Institut de Recherches Cliniques de Montréal, 110 Avenue des Pins Ouest, Montréal, QC H2W 1R7, Canada; Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology and Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei, Taiwan
| | - S Carmen Panaitof
- Department of Biology, University of Nebraska, Kearney, Kearney, NE 68849, USA
| | - Julie Cardin
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology and Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei, Taiwan
| | - Holger Eltzschig
- Department of Anesthesiology, The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX 77030, USA
| | - Artur Kania
- Institut de Recherches Cliniques de Montréal, 110 Avenue des Pins Ouest, Montréal, QC H2W 1R7, Canada; Faculté de Médecine, Université de Montréal, Montréal, QC H3C 3J7, Canada; Departments of Anatomy and Cell Biology and Biology, Division of Experimental Medicine, McGill University, Montréal, QC H3A 3R1, Canada
| | - Bennett G Novitch
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Neuroscience Interdisciplinary Graduate Program, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Samantha J Butler
- Department of Neurobiology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Neuroscience Interdisciplinary Graduate Program, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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178
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Arous C, Wehrle-Haller B. Role and impact of the extracellular matrix on integrin-mediated pancreatic β-cell functions. Biol Cell 2017; 109:223-237. [PMID: 28266044 DOI: 10.1111/boc.201600076] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 12/17/2022]
Abstract
Understanding the organisation and role of the extracellular matrix (ECM) in islets of Langerhans is critical for maintaining pancreatic β-cells, and to recognise and revert the physiopathology of diabetes. Indeed, integrin-mediated adhesion signalling in response to the pancreatic ECM plays crucial roles in β-cell survival and insulin secretion, two major functions, which are affected in diabetes. Here, we would like to present an update on the major components of the pancreatic ECM, their role during integrin-mediated cell-matrix adhesions and how they are affected during diabetes. To treat diabetes, a promising approach consists in replacing β-cells by transplantation. However, efficiency is low, because β-cells suffer of anoikis, due to enzymatic digestion of the pancreatic ECM, which affects the survival of insulin-secreting β-cells. The strategy of adding ECM components during transplantation, to reproduce the pancreatic microenvironment, is a challenging task, as many of the regulatory mechanisms that control ECM deposition and turnover are not sufficiently understood. A better comprehension of the impact of the ECM on the adhesion and integrin-dependent signalling in β-cells is primordial to improve the healthy state of islets to prevent the onset of diabetes as well as for enhancing the efficiency of the islet transplantation therapy.
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Affiliation(s)
- Caroline Arous
- Department of Cell Physiology and Metabolism, University of Geneva Medical Center, Geneva, Switzerland
| | - Bernhard Wehrle-Haller
- Department of Cell Physiology and Metabolism, University of Geneva Medical Center, Geneva, Switzerland
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179
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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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180
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Campo C, da Silva Filho MI, Weinhold N, Mahmoudpour SH, Goldschmidt H, Hemminki K, Merz M, Försti A. Bortezomib-induced peripheral neuropathy: A genome-wide association study on multiple myeloma patients. Hematol Oncol 2017; 36:232-237. [PMID: 28317148 DOI: 10.1002/hon.2391] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/27/2017] [Accepted: 01/31/2017] [Indexed: 01/02/2023]
Abstract
The proteasome-inhibitor bortezomib was introduced into the treatment of multiple myeloma more than a decade ago. It is clinically beneficial, but peripheral neuropathy (PNP) is a side effect that may limit its use in some patients. To examine the possible genetic predisposing factors to PNP, we performed a genome-wide association study on 646 bortezomib-treated German multiple myeloma patients. Our aim was to identify genetic risk variants associated with the development of PNP as a serious side effect of the treatment. We identified 4 new promising loci for bortezomib-induced PNP at 4q34.3 (rs6552496), 5q14.1 (rs12521798), 16q23.3 (rs8060632), and 18q21.2 (rs17748074). Even though the results did not reach genome-wide significance level, they support the idea of previous studies, suggesting a genetic basis for neurotoxicity. The identified single nucleotide polymorphisms map to genes or next to genes involved in the development and function of the nervous system (CDH13, DCC, and TENM3). As possible functional clues, 2 of the variants, rs12521798 and rs17748074, affect enhancer histone marks in the brain. The rs12521798 may also impact expression of THBS4, which affects specific signal trasduction pathways in the nervous system. Further research is needed to clarify the mechanism of action of the identified single nucleotide polymorphisms in the development of drug-induced PNP and to functionally validate our in silico predictions.
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Affiliation(s)
- Chiara Campo
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Niels Weinhold
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany.,Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | | | - Hartmut Goldschmidt
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany.,National Centre of Tumor Diseases, Heidelberg, Germany
| | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Maximilian Merz
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany.,Department of Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Asta Försti
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Center for Primary Health Care Research, Lund University, Malmö, Sweden
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181
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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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182
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Friocourt F, Lafont AG, Kress C, Pain B, Manceau M, Dufour S, Chédotal A. Recurrent DCC gene losses during bird evolution. Sci Rep 2017; 7:37569. [PMID: 28240285 PMCID: PMC5327424 DOI: 10.1038/srep37569] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 10/31/2016] [Indexed: 01/07/2023] Open
Abstract
During development, midline crossing by axons brings into play highly conserved families of receptors and ligands. The interaction between the secreted ligand Netrin-1 and its receptor Deleted in Colorectal Carcinoma (DCC) is thought to control midline attraction of crossing axons. Here, we studied the evolution of this ligand/receptor couple in birds taking advantage of a wealth of newly sequenced genomes. From phylogeny and synteny analyses we can infer that the DCC gene has been conserved in most extant bird species, while two independent events have led to its loss in two avian groups, passeriformes and galliformes. These convergent accidental gene loss events are likely related to chromosome Z rearrangement. We show, using whole-mount immunostaining and 3Disco clearing, that in the nervous system of all birds that have a DCC gene, DCC protein expression pattern is similar to other vertebrates. Surprisingly, we show that the early developmental pattern of commissural tracts is comparable in all birds, whether or not they have a DCC receptor. Interestingly, only 4 of the 5 genes encoding secreted netrins, the DCC ligands in vertebrates, were found in birds, but Netrin-5 was absent. Together, these results support a remarkable plasticity of commissural axon guidance mechanisms in birds.
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Affiliation(s)
- François Friocourt
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 Rue Moreau, 75012 Paris, France
| | - Anne-Gaelle Lafont
- Muséum National d’Histoire Naturelle, Sorbonne Universités, Research Unit BOREA, Biology of Aquatic Organisms and Ecosystems, CNRS 7208, IRD207, UPMC, UCN, Paris, France
| | - Clémence Kress
- Université Lyon 1, INSERM, INRA, Stem Cell and Brain Research Institute, U1208, USC1361, 69500 Bron, France
| | - Bertrand Pain
- Université Lyon 1, INSERM, INRA, Stem Cell and Brain Research Institute, U1208, USC1361, 69500 Bron, France
| | - Marie Manceau
- Center for Interdisciplinary Research in Biology, CNRS UMR 7241, Collège de France, 75005 Paris, France
| | - Sylvie Dufour
- Muséum National d’Histoire Naturelle, Sorbonne Universités, Research Unit BOREA, Biology of Aquatic Organisms and Ecosystems, CNRS 7208, IRD207, UPMC, UCN, Paris, France
| | - Alain Chédotal
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 Rue Moreau, 75012 Paris, France
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183
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Dun XP, Parkinson DB. Role of Netrin-1 Signaling in Nerve Regeneration. Int J Mol Sci 2017; 18:ijms18030491. [PMID: 28245592 PMCID: PMC5372507 DOI: 10.3390/ijms18030491] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/20/2017] [Accepted: 02/22/2017] [Indexed: 01/06/2023] Open
Abstract
Netrin-1 was the first axon guidance molecule to be discovered in vertebrates and has a strong chemotropic function for axonal guidance, cell migration, morphogenesis and angiogenesis. It is a secreted axon guidance cue that can trigger attraction by binding to its canonical receptors Deleted in Colorectal Cancer (DCC) and Neogenin or repulsion through binding the DCC/Uncoordinated (Unc5) A–D receptor complex. The crystal structures of Netrin-1/receptor complexes have recently been revealed. These studies have provided a structure based explanation of Netrin-1 bi-functionality. Netrin-1 and its receptor are continuously expressed in the adult nervous system and are differentially regulated after nerve injury. In the adult spinal cord and optic nerve, Netrin-1 has been considered as an inhibitor that contributes to axon regeneration failure after injury. In the peripheral nervous system, Netrin-1 receptors are expressed in Schwann cells, the cell bodies of sensory neurons and the axons of both motor and sensory neurons. Netrin-1 is expressed in Schwann cells and its expression is up-regulated after peripheral nerve transection injury. Recent studies indicated that Netrin-1 plays a positive role in promoting peripheral nerve regeneration, Schwann cell proliferation and migration. Targeting of the Netrin-1 signaling pathway could develop novel therapeutic strategies to promote peripheral nerve regeneration and functional recovery.
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Affiliation(s)
- Xin-Peng Dun
- Peninsula Schools of Medicine and Dentistry, Plymouth University, Plymouth, Devon PL6 8BU, UK.
- School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China.
| | - David B Parkinson
- Peninsula Schools of Medicine and Dentistry, Plymouth University, Plymouth, Devon PL6 8BU, UK.
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184
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Gopal AA, Rappaz B, Rouger V, Martyn IB, Dahlberg PD, Meland RJ, Beamish IV, Kennedy TE, Wiseman PW. Netrin-1-Regulated Distribution of UNC5B and DCC in Live Cells Revealed by TICCS. Biophys J 2017; 110:623-634. [PMID: 26840727 DOI: 10.1016/j.bpj.2015.12.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/16/2015] [Accepted: 12/21/2015] [Indexed: 01/01/2023] Open
Abstract
Netrins are secreted proteins that direct cell migration and adhesion during development. Netrin-1 binds its receptors deleted in colorectal cancer (DCC) and the UNC5 homologs (UNC5A-D) to activate downstream signaling that ultimately directs cytoskeletal reorganization. To investigate how netrin-1 regulates the dynamic distribution of DCC and UNC5 homologs, we applied fluorescence confocal and total internal reflection fluorescence microscopy, and sliding window temporal image cross correlation spectroscopy, to measure time profiles of the plasma membrane distribution, aggregation state, and interaction fractions of fluorescently tagged netrin receptors expressed in HEK293T cells. Our measurements reveal changes in receptor aggregation that are consistent with netrin-1-induced recruitment of DCC-enhanced green fluorescent protein (EGFP) from intracellular vesicles to the plasma membrane. Netrin-1 also induced colocalization of coexpressed full-length DCC-EGFP with DCC-T-mCherry, a putative DCC dominant negative that replaces the DCC intracellular domain with mCherry, consistent with netrin-1-induced receptor oligomerization, but with no change in aggregation state with time, providing evidence that signaling via the DCC intracellular domain triggers DCC recruitment to the plasma membrane. UNC5B expressed alone was also recruited by netrin-1 to the plasma membrane. Coexpressed DCC and UNC5 homologs are proposed to form a heteromeric netrin-receptor complex to mediate a chemorepellent response. Application of temporal image cross correlation spectroscopy to image series of cells coexpressing UNC5B-mCherry and DCC-EGFP revealed a netrin-1-induced increase in colocalization, with both receptors recruited to the plasma membrane from preexisting clusters, consistent with vesicular recruitment and receptor heterooligomerization. Plasma membrane recruitment of DCC or UNC5B was blocked by application of the netrin-1 VI-V peptide, which fails to activate chemoattraction, or by pharmacological block of Src family kinase signaling, consistent with receptor recruitment requiring netrin-1-activated signaling. Our findings reveal a mechanism activated by netrin-1 that recruits DCC and UNC5B to the plasma membrane.
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Affiliation(s)
- Angelica A Gopal
- Department of Chemistry, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada; McGill Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Benjamin Rappaz
- McGill Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada; Department of Physics, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Vincent Rouger
- Department of Chemistry, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Iain B Martyn
- Department of Physics, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Peter D Dahlberg
- Department of Physics, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Rachel J Meland
- Department of Chemistry, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Ian V Beamish
- McGill Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada; Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Timothy E Kennedy
- McGill Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada; Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Paul W Wiseman
- Department of Chemistry, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada; McGill Program in Neuroengineering, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada; Department of Physics, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada.
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185
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Blasiak A, Kilinc D, Lee GU. Neuronal Cell Bodies Remotely Regulate Axonal Growth Response to Localized Netrin-1 Treatment via Second Messenger and DCC Dynamics. Front Cell Neurosci 2017; 10:298. [PMID: 28105005 PMCID: PMC5214882 DOI: 10.3389/fncel.2016.00298] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 12/16/2016] [Indexed: 12/15/2022] Open
Abstract
Netrin-1 modulates axonal growth direction and speed. Its best characterized receptor, Deleted in Colorectal Cancer (DCC), is localized to growth cones, but also observed in the cell bodies. We hypothesized that cell bodies sense Netrin-1 and contribute to axon growth rate modulation, mediated by the second messenger system. We cultured mouse cortical neurons in microfluidic devices to isolate distal axon and cell body microenvironments. Compared to isolated axonal treatment, global Netrin-1 treatment decreased the axon elongation rate and affected the dynamics of total and membranous DCC, calcium, and cyclic nucleotides. Signals induced by locally applied Netrin-1 propagated in both anterograde and retrograde directions, demonstrated by the long-range increase in DCC and by the increased frequency of calcium transients in cell bodies, evoked by axonal Netrin-1. Blocking the calcium efflux from endoplasmic reticulum suppressed the membranous DCC response. Our findings support the notion that neurons sense Netrin-1 along their entire lengths in making axonal growth decisions.
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Affiliation(s)
- Agata Blasiak
- Bionanosciences Group, School of Chemistry, University College Dublin Dublin, Ireland
| | - Devrim Kilinc
- Bionanosciences Group, School of Chemistry, University College DublinDublin, Ireland; UCD Conway Institute of Biomedical and Biomolecular Research, University College DublinDublin, Ireland
| | - Gil U Lee
- Bionanosciences Group, School of Chemistry, University College DublinDublin, Ireland; UCD Conway Institute of Biomedical and Biomolecular Research, University College DublinDublin, Ireland
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186
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Bhattacharjee N, Folch A. Large-scale microfluidic gradient arrays reveal axon guidance behaviors in hippocampal neurons. MICROSYSTEMS & NANOENGINEERING 2017; 3:17003. [PMID: 31057858 PMCID: PMC6445017 DOI: 10.1038/micronano.2017.3] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/30/2016] [Accepted: 12/10/2016] [Indexed: 05/05/2023]
Abstract
High-throughput quantitative approaches to study axon growth behaviors have remained a challenge. We have developed a 1024-chamber microfluidic gradient generator array that enables large-scale investigations of axon guidance and growth dynamics from individual primary mammalian neurons, which are exposed to gradients of diffusible molecules. Our microfluidic method (a) generates statistically rich data sets, (b) produces a stable, reproducible gradient with negligible shear stresses on the culture surface, (c) is amenable to the long-term culture of primary neurons without any unconventional protocol, and (d) eliminates the confounding influence of cell-secreted factors. Using this platform, we demonstrate that hippocampal axon guidance in response to a netrin-1 gradient is concentration-dependent-attractive at higher concentrations and repulsive at lower concentrations. We also show that the turning of the growth cone depends on the angle of incidence of the gradient. Our study highlights the potential of microfluidic devices in producing large amounts of data from morphogen and chemokine gradients that play essential roles not only in axonal navigation but also in stem cell differentiation, cell migration, and immune response.
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Affiliation(s)
- Nirveek Bhattacharjee
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Foege N423-A, Seattle, WA 98195, USA
- ()
| | - Albert Folch
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Foege N423-A, Seattle, WA 98195, USA
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187
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Lee SS, Lee SJ, Lee SH, Ryu JM, Lim HS, Kim JS, Song EJ, Jung YH, Lee HJ, Kim CH, Han HJ. Netrin-1-Induced Stem Cell Bioactivity Contributes to the Regeneration of Injured Tissues via the Lipid Raft-Dependent Integrin α6β4 Signaling Pathway. Sci Rep 2016; 6:37526. [PMID: 27881869 PMCID: PMC5121594 DOI: 10.1038/srep37526] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 10/31/2016] [Indexed: 11/17/2022] Open
Abstract
Netrin-1 (Ntn-1) is a multifunctional neuronal signaling molecule; however, its physiological significance, which improves the tissue-regeneration capacity of stem cells, has not been characterized. In the present study, we investigate the mechanism by which Ntn-1 promotes the proliferation of hUCB-MSCs with regard to the regeneration of injured tissues. We found that Ntn-1 induces the proliferation of hUCB-MSCs mainly via Inα6β4 coupled with c-Src. Ntn-1 induced the recruitment of NADPH oxidases and Rac1 into membrane lipid rafts to facilitate ROS production. The Inα6β4 signaling of Ntn-1 through ROS production is uniquely mediated by the activation of SP1 for cell cycle progression and the transcriptional occupancy of SP1 on the VEGF promoter. Moreover, Ntn-1 has the ability to induce the F-actin reorganization of hUCB-MSCs via the Inα6β4 signaling pathway. In an in vivo model, transplantation of hUCB-MSCs pre-treated with Ntn-1 enhanced the skin wound healing process, where relatively more angiogenesis was detected. The potential effect of Ntn-1 on angiogenesis is further verified by the mouse hindlimb ischemia model, where the pre-activation of hUCB-MSCs with Ntn-1 significantly improved vascular regeneration. These results demonstrate that Ntn-1 plays an important role in the tissue regeneration process of hUCB-MSC via the lipid raft-mediated Inα6β4 signaling pathway.
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Affiliation(s)
- Soo Sang Lee
- Department of plastic and reconstructive surgery, Bundang CHA Medical Center, Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea.,SKY plastic surgery clinic, 4F, 826-23, Yeoksam-dong, Gangnam-gu, Seoul, Korea
| | - Sei-Jung Lee
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science and BK21 PLUS Program for Creative Veterinary Science Research Center, Seoul National University, Seoul 08826, Korea
| | - Sang Hun Lee
- Medical Science Research Institute, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Jung Min Ryu
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Hyeon Su Lim
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science and BK21 PLUS Program for Creative Veterinary Science Research Center, Seoul National University, Seoul 08826, Korea
| | - Jun Sung Kim
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science and BK21 PLUS Program for Creative Veterinary Science Research Center, Seoul National University, Seoul 08826, Korea
| | - Eun Ju Song
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science and BK21 PLUS Program for Creative Veterinary Science Research Center, Seoul National University, Seoul 08826, Korea
| | - Young Hyun Jung
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science and BK21 PLUS Program for Creative Veterinary Science Research Center, Seoul National University, Seoul 08826, Korea
| | - Hyun Jik Lee
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science and BK21 PLUS Program for Creative Veterinary Science Research Center, Seoul National University, Seoul 08826, Korea
| | - Chung Hun Kim
- Department of plastic and reconstructive surgery, Bundang CHA Medical Center, Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea
| | - Ho Jae Han
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science and BK21 PLUS Program for Creative Veterinary Science Research Center, Seoul National University, Seoul 08826, Korea
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188
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Hayano Y, Takasu K, Koyama Y, Yamada M, Ogawa K, Minami K, Asaki T, Kitada K, Kuwabara S, Yamashita T. Dorsal horn interneuron-derived Netrin-4 contributes to spinal sensitization in chronic pain via Unc5B. J Exp Med 2016; 213:2949-2966. [PMID: 27856613 PMCID: PMC5154943 DOI: 10.1084/jem.20160877] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 09/01/2016] [Accepted: 10/24/2016] [Indexed: 11/28/2022] Open
Abstract
Hayano et al. show that Netrin-4, which is originally identified as an axon guidance molecule, is capable of enhancing sensitivity to sensory input and can contribute to neuropathic pain. The findings provide evidence for a previously unknown pain-inducing signal from spinal cord interneurons. Because of the incomplete understanding of the molecular mechanisms that underlie chronic pain, the currently available treatments for this type of pain remain inefficient. In this study, we show that Netrin-4, a member of the axon guidance molecule family, was expressed in dorsal horn inner lamina II excitatory interneurons in the rat spinal cord. A similar expression pattern for Netrin-4 was also observed in human spinal cord. Behavioral analysis revealed that tactile and heat hyperalgesia after peripheral nerve injury or inflammation were abolished in Netrin-4–mutant rats. Transient suppression of Netrin-4 or its receptor Unc5B after injury could also prevent allodynia. Conversely, intrathecal administration of Netrin-4 protein to naive rats enhanced excitatory synaptic transmission in the dorsal horn and induced allodynia, suggesting that Netrin-4 is involved in spinal sensitization. Furthermore, the Unc5B receptor and subsequent activation of the tyrosine phosphatase SHP2 mediated Netrin-4–induced pain signaling in the spinal cord. These results identify Netrin-4 as a novel protein regulating spinal sensitization leading to chronic pain. Our findings provide evidence for the function of Netrin in the adult nervous system, as well as a previously unknown function in inducing pain signals from dorsal horn interneurons.
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Affiliation(s)
- Yasufumi Hayano
- Department of Molecular Neuroscience, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Keiko Takasu
- Pain and Neuroscience, Discovery Research Laboratory for Core Therapeutic Areas, Shionogi & Co., Ltd., Toyonaka, Osaka 561-0825, Japan
| | - Yoshihisa Koyama
- Department of Molecular Neuroscience, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Moe Yamada
- Department of Molecular Neuroscience, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koichi Ogawa
- Pain and Neuroscience, Discovery Research Laboratory for Core Therapeutic Areas, Shionogi & Co., Ltd., Toyonaka, Osaka 561-0825, Japan
| | - Kazuhisa Minami
- Pain and Neuroscience, Discovery Research Laboratory for Core Therapeutic Areas, Shionogi & Co., Ltd., Toyonaka, Osaka 561-0825, Japan
| | - Toshiyuki Asaki
- Pain and Neuroscience, Discovery Research Laboratory for Core Therapeutic Areas, Shionogi & Co., Ltd., Toyonaka, Osaka 561-0825, Japan
| | - Kazuhiro Kitada
- Department of Biological Sciences, Graduate School of Science, Hokkaido University, Kita-ku, Sapporo 060-0810, Japan
| | - Satoshi Kuwabara
- Department of Neurology, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba 260-8670, Japan
| | - Toshihide Yamashita
- Department of Molecular Neuroscience, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
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189
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Gupta T, Kumar A, Cattenoz PB, VijayRaghavan K, Giangrande A. The Glide/Gcm fate determinant controls initiation of collective cell migration by regulating Frazzled. eLife 2016; 5. [PMID: 27740455 PMCID: PMC5114015 DOI: 10.7554/elife.15983] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 10/12/2016] [Indexed: 12/16/2022] Open
Abstract
Collective migration is a complex process that contributes to build precise tissue and organ architecture. Several molecules implicated in cell interactions also control collective migration, but their precise role and the finely tuned expression that orchestrates this complex developmental process are poorly understood. Here, we show that the timely and threshold expression of the Netrin receptor Frazzled triggers the initiation of glia migration in the developing Drosophila wing. Frazzled expression is induced by the transcription factor Glide/Gcm in a dose-dependent manner. Thus, the glial determinant also regulates the efficiency of collective migration. NetrinB but not NetrinA serves as a chemoattractant and Unc5 contributes as a repellant Netrin receptor for glia migration. Our model includes strict spatial localization of a ligand, a cell autonomously acting receptor and a fate determinant that act coordinately to direct glia toward their final destination. DOI:http://dx.doi.org/10.7554/eLife.15983.001
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Affiliation(s)
- Tripti Gupta
- Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Centre National de la Recherche Scientifique, UMR7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France.,Université de Strasbourg, Illkirch, France
| | - Arun Kumar
- Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Centre National de la Recherche Scientifique, UMR7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France.,Université de Strasbourg, Illkirch, France
| | - Pierre B Cattenoz
- Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Centre National de la Recherche Scientifique, UMR7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France.,Université de Strasbourg, Illkirch, France
| | - K VijayRaghavan
- Department of Developmental Biology and Genetics, Tata Institute for Fundamental Research, Bangalore, India.,National Centre for Biological Sciences, Tata Institute for Fundamental Research, Bangalore, India
| | - Angela Giangrande
- Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Centre National de la Recherche Scientifique, UMR7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France.,Université de Strasbourg, Illkirch, France
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190
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Forrest CM, McNair K, Vincenten MCJ, Darlington LG, Stone TW. Selective depletion of tumour suppressors Deleted in Colorectal Cancer (DCC) and neogenin by environmental and endogenous serine proteases: linking diet and cancer. BMC Cancer 2016; 16:772. [PMID: 27716118 PMCID: PMC5054602 DOI: 10.1186/s12885-016-2795-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 09/21/2016] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND The related tumour suppressor proteins Deleted in Colorectal Cancer (DCC) and neogenin are absent or weakly expressed in many cancers, whereas their insertion into cells suppresses oncogenic behaviour. Serine proteases influence the initiation and progression of cancers although the mechanisms are unknown. METHODS The effects of environmental (bacterial subtilisin) and endogenous mammalian (chymotrypsin) serine proteases were examined on protein expression in fresh, normal tissue and human neuroblastoma and mammary adenocarcinoma lines. Cell proliferation and migration assays (chemoattraction and wound closure) were used to examine cell function. Cells lacking DCC were transfected with an ectopic dcc plasmid. RESULTS Subtilisin and chymotrypsin selectively depleted DCC and neogenin from cells at nanomolar concentrations without affecting related proteins. Cells showed reduced adherence and increased migration, but after washing they re-attached within 24 h, with recovery of protein expression. These effects are induced by chymotryptic activity as they are prevented by chymostatin and the soybean Bowman-Birk inhibitor typical of many plant protease inhibitors. CONCLUSIONS Bacillus subtilis, which secretes subtilisin is widely present in soil, the environment and the intestinal contents, while subtilisin itself is used in meat processing, animal feed probiotics and many household cleaning agents. With chymotrypsin present in chyme, blood and tissues, these proteases may contribute to cancer development by depleting DCC and neogenin. Blocking their activity by Bowman-Birk inhibitors may explain the protective effects of a plant diet. Our findings identify a potential non-genetic contribution to cancer cell behaviour which may explain both the association of processed meats and other factors with cancer incidence and the protection afforded by plant-rich diets, with significant implications for cancer prevention.
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Affiliation(s)
- Caroline M Forrest
- College of Medical, Veterinary and Life Sciences, West Medical Building, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Kara McNair
- College of Medical, Veterinary and Life Sciences, West Medical Building, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Maria C J Vincenten
- College of Medical, Veterinary and Life Sciences, West Medical Building, University of Glasgow, Glasgow, G12 8QQ, UK
| | | | - Trevor W Stone
- College of Medical, Veterinary and Life Sciences, West Medical Building, University of Glasgow, Glasgow, G12 8QQ, UK.
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191
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Changes in neurotrophic factors of adult rat laryngeal muscles during nerve regeneration. Neuroscience 2016; 333:44-53. [DOI: 10.1016/j.neuroscience.2016.07.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 07/01/2016] [Accepted: 07/02/2016] [Indexed: 02/06/2023]
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192
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Maruyama K, Kawasaki T, Hamaguchi M, Hashimoto M, Furu M, Ito H, Fujii T, Takemura N, Karuppuchamy T, Kondo T, Kawasaki T, Fukasaka M, Misawa T, Saitoh T, Suzuki Y, Martino MM, Kumagai Y, Akira S. Bone-protective Functions of Netrin 1 Protein. J Biol Chem 2016; 291:23854-23868. [PMID: 27681594 DOI: 10.1074/jbc.m116.738518] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 09/16/2016] [Indexed: 12/27/2022] Open
Abstract
Netrin 1 was initially identified as an axon guidance factor, and recent studies indicate that it inhibits chemokine-directed monocyte migration. Despite its importance as a neuroimmune guidance cue, the role of netrin 1 in osteoclasts is largely unknown. Here we detected high netrin 1 levels in the synovial fluid of rheumatoid arthritis patients. Netrin 1 is potently expressed in osteoblasts and synovial fibroblasts, and IL-17 robustly enhances netrin 1 expression in these cells. The binding of netrin 1 to its receptor UNC5b on osteoclasts resulted in activation of SHP1, which inhibited VAV3 phosphorylation and RAC1 activation. This significantly impaired the actin polymerization and fusion, but not the differentiation of osteoclast. Strikingly, netrin 1 treatment prevented bone erosion in an autoimmune arthritis model and age-related bone destruction. Therefore, the netrin 1-UNC5b axis is a novel therapeutic target for bone-destructive diseases.
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Affiliation(s)
| | - Takahiko Kawasaki
- the Division of Brain Function, National Institute of Genetics, 1111 Yata, Mishima 411-8540, Japan
| | - Masahide Hamaguchi
- Experimental Immunology, World Premier Institute (WPI) Immunology Frontier Research Center (IFReC) and
| | - Motomu Hashimoto
- the Department of the Control for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Moritoshi Furu
- the Department of the Control for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Hiromu Ito
- the Department of the Control for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Takao Fujii
- the Department of the Control for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
| | - Naoki Takemura
- the Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccine, Institute for Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | | | | | | | | | | | - Tatsuya Saitoh
- From the Laboratories of Host Defense and.,the Department of Inflammation Biology, Institute for Enzyme Research, Tokushima University, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan
| | - Yutaka Suzuki
- the Departments of Functional Genomics and Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan, and
| | - Mikaël M Martino
- From the Laboratories of Host Defense and.,the European Molecular Biology Laboratory, Australian Regenerative Medicine Institute, Monash University, Victoria 3800, Australia
| | | | - Shizuo Akira
- From the Laboratories of Host Defense and .,the Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
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193
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Yang X, Li S, Zhong J, Zhang W, Hua X, Li B, Sun H. CD151 mediates netrin-1-induced angiogenesis through the Src-FAK-Paxillin pathway. J Cell Mol Med 2016; 21:72-80. [PMID: 27558487 PMCID: PMC5192806 DOI: 10.1111/jcmm.12939] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 06/27/2016] [Indexed: 01/05/2023] Open
Abstract
Crosstalk between the nervous and vascular systems is important during development and in response to injury, and the laminin-like axonal guidance protein netrin-1 has been studied for its involvement in angiogenesis and vascular remodelling. In this study, we examined the role of netrin-1 in angiogenesis and explored the underlying mechanisms. The effect of netrin-1 on brain tissues and endothelial cells was examined by immunohistochemistry and western blotting in a middle cerebral artery occlusion model and in human umbilical vein endothelial cells. Cell proliferation and cell cycle progression were assessed by the MTT assay and flow cytometry, and the Transwell and tube formation assays were used to examine endothelial cell motility and function. Netrin-1 up-regulated CD151 and VEGF concomitant with the activation of focal adhesion kinase (FAK), Src and Paxillin in vitro and in vivo and the induction of cell proliferation, migration and tube formation in vitro. Silencing of CD151 abolished the effects of netrin-1 on promoting cell migration and tube formation mediated by the activation of FAK/Src signalling. Netrin-1 promoted angiogenesis in vitro and in vivo by activating the FAK/Src/Paxillin signalling pathway through a mechanism dependent on the expression of the CD151 tetraspanin, suggesting the existence of a netrin-1/FAK/Src/CD151 signalling axis involved in the modulation of angiogenesis.
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Affiliation(s)
- Xiaosheng Yang
- Department of Neurosurgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Shiting Li
- Department of Neurosurgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jun Zhong
- Department of Neurosurgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Wenchuan Zhang
- Department of Neurosurgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xuming Hua
- Department of Neurosurgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Bin Li
- Department of Neurosurgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Hui Sun
- Department of Neurosurgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
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194
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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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195
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Manaspon C, Nasongkla N, Chaimongkolnukul K, Nittayacharn P, Vejjasilpa K, Kengkoom K, Boongird A, Hongeng S. Injectable SN-38-loaded Polymeric Depots for Cancer Chemotherapy of Glioblastoma Multiforme. Pharm Res 2016; 33:2891-2903. [DOI: 10.1007/s11095-016-2011-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 07/29/2016] [Indexed: 01/19/2023]
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196
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Rappaz B, Lai Wing Sun K, Correia JP, Wiseman PW, Kennedy TE. FLIM FRET Visualization of Cdc42 Activation by Netrin-1 in Embryonic Spinal Commissural Neuron Growth Cones. PLoS One 2016; 11:e0159405. [PMID: 27482713 PMCID: PMC4970703 DOI: 10.1371/journal.pone.0159405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 07/02/2016] [Indexed: 12/29/2022] Open
Abstract
Netrin-1 is an essential extracellular chemoattractant that signals through its receptor DCC to guide commissural axon extension in the embryonic spinal cord. DCC directs the organization of F-actin in growth cones by activating an intracellular protein complex that includes the Rho GTPase Cdc42, a critical regulator of cell polarity and directional migration. To address the spatial distribution of signaling events downstream of netrin-1, we expressed the FRET biosensor Raichu-Cdc42 in cultured embryonic rat spinal commissural neurons. Using FLIM-FRET imaging we detected rapid activation of Cdc42 in neuronal growth cones following application of netrin-1. Investigating the signaling mechanisms that control Cdc42 activation by netrin-1, we demonstrate that netrin-1 rapidly enriches DCC at the leading edge of commissural neuron growth cones and that netrin-1 induced activation of Cdc42 in the growth cone is blocked by inhibiting src family kinase signaling. These findings reveal the activation of Cdc42 in embryonic spinal commissural axon growth cones and support the conclusion that src family kinase activation downstream of DCC is required for Cdc42 activation by netrin-1.
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Affiliation(s)
- Benjamin Rappaz
- Program in NeuroEngineering, McGill University, Montreal, QC, H3A 2B4, Canada
- Department of Neurology and Neurosurgery, Montréal Neurological Institute, McGill University, Montreal, QC, H3A 2B4, Canada
- Department of Physics, McGill University, Montreal, QC, H3A 2T8, Canada
| | - Karen Lai Wing Sun
- Program in NeuroEngineering, McGill University, Montreal, QC, H3A 2B4, Canada
- Department of Neurology and Neurosurgery, Montréal Neurological Institute, McGill University, Montreal, QC, H3A 2B4, Canada
| | - James P. Correia
- Program in NeuroEngineering, McGill University, Montreal, QC, H3A 2B4, Canada
- Department of Neurology and Neurosurgery, Montréal Neurological Institute, McGill University, Montreal, QC, H3A 2B4, Canada
| | - Paul W. Wiseman
- Program in NeuroEngineering, McGill University, Montreal, QC, H3A 2B4, Canada
- Department of Physics, McGill University, Montreal, QC, H3A 2T8, Canada
- Department of Chemistry, McGill University, Montreal, QC, H3A 0B8, Canada
| | - Timothy E. Kennedy
- Program in NeuroEngineering, McGill University, Montreal, QC, H3A 2B4, Canada
- Department of Neurology and Neurosurgery, Montréal Neurological Institute, McGill University, Montreal, QC, H3A 2B4, Canada
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197
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Boneschansker L, Nakayama H, Eisenga M, Wedel J, Klagsbrun M, Irimia D, Briscoe DM. Netrin-1 Augments Chemokinesis in CD4+ T Cells In Vitro and Elicits a Proinflammatory Response In Vivo. THE JOURNAL OF IMMUNOLOGY 2016; 197:1389-98. [PMID: 27430720 DOI: 10.4049/jimmunol.1502432] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 06/14/2016] [Indexed: 11/19/2022]
Abstract
Netrin-1 is a neuronal guidance cue that regulates cellular activation, migration, and cytoskeleton rearrangement in multiple cell types. It is a chemotropic protein that is expressed within tissues and elicits both attractive and repulsive migratory responses. Netrin-1 has recently been found to modulate the immune response via the inhibition of neutrophil and macrophage migration. However, the ability of Netrin-1 to interact with lymphocytes and its in-depth effects on leukocyte migration are poorly understood. In this study, we profiled the mRNA and protein expression of known Netrin-1 receptors on human CD4(+) T cells. Neogenin, uncoordinated-5 (UNC5)A, and UNC5B were expressed at low levels in unstimulated cells, but they increased following mitogen-dependent activation. By immunofluorescence, we observed a cytoplasmic staining pattern of neogenin and UNC5A/B that also increased following activation. Using a novel microfluidic assay, we found that Netrin-1 stimulated bidirectional migration and enhanced the size of migratory subpopulations of mitogen-activated CD4(+) T cells, but it had no demonstrable effects on the migration of purified CD4(+)CD25(+)CD127(dim) T regulatory cells. Furthermore, using a short hairpin RNA knockdown approach, we observed that the promigratory effects of Netrin-1 on T effectors is dependent on its interactions with neogenin. In the humanized SCID mouse, local injection of Netrin-1 into skin enhanced inflammation and the number of neogenin-expressing CD3(+) T cell infiltrates. Neogenin was also observed on CD3(+) T cell infiltrates within human cardiac allograft biopsies with evidence of rejection. Collectively, our findings demonstrate that Netrin-1/neogenin interactions augment CD4(+) T cell chemokinesis and promote cellular infiltration in association with acute inflammation in vivo.
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Affiliation(s)
- Leo Boneschansker
- Transplant Research Program, Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA 02115; Department of Pediatrics, Harvard Medical School, Boston, MA 02115; Center for Engineering in Medicine, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA 02114; and
| | - Hironao Nakayama
- Vascular Biology Program, Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115
| | - Michele Eisenga
- Transplant Research Program, Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA 02115
| | - Johannes Wedel
- Transplant Research Program, Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA 02115; Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Michael Klagsbrun
- Vascular Biology Program, Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115
| | - Daniel Irimia
- Center for Engineering in Medicine, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Shriners Hospitals for Children, Boston, MA 02114; and
| | - David M Briscoe
- Transplant Research Program, Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA 02115; Department of Pediatrics, Harvard Medical School, Boston, MA 02115;
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198
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Miloudi K, Binet F, Wilson A, Cerani A, Oubaha M, Menard C, Henriques S, Mawambo G, Dejda A, Nguyen PT, Rezende FA, Bourgault S, Kennedy TE, Sapieha P. Truncated netrin-1 contributes to pathological vascular permeability in diabetic retinopathy. J Clin Invest 2016; 126:3006-22. [PMID: 27400127 DOI: 10.1172/jci84767] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 05/12/2016] [Indexed: 12/31/2022] Open
Abstract
Diabetic retinopathy (DR) is a major complication of diabetes and a leading cause of blindness in the working-age population. Impaired blood-retinal barrier function leads to macular edema that is closely associated with the deterioration of central vision. We previously demonstrated that the neuronal guidance cue netrin-1 activates a program of reparative angiogenesis in microglia within the ischemic retina. Here, we provide evidence in both vitreous humor of diabetic patients and in retina of a murine model of diabetes that netrin-1 is metabolized into a bioactive fragment corresponding to domains VI and V of the full-length molecule. In contrast to the protective effects of full-length netrin-1 on retinal microvasculature, the VI-V fragment promoted vascular permeability through the uncoordinated 5B (UNC5B) receptor. The collagenase matrix metalloprotease 9 (MMP-9), which is increased in patients with diabetic macular edema, was capable of cleaving netrin-1 into the VI-V fragment. Thus, MMP-9 may release netrin-1 fragments from the extracellular matrix and facilitate diffusion. Nonspecific inhibition of collagenases or selective inhibition of MMP-9 decreased pathological vascular permeability in a murine model of diabetic retinal edema. This study reveals that netrin-1 degradation products are capable of modulating vascular permeability, suggesting that these fragments are of potential therapeutic interest for the treatment of DR.
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199
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Shahin MH, Gong Y, McDonough CW, Rotroff DM, Beitelshees AL, Garrett TJ, Gums JG, Motsinger-Reif A, Chapman AB, Turner ST, Boerwinkle E, Frye RF, Fiehn O, Cooper-DeHoff RM, Kaddurah-Daouk R, Johnson JA. A Genetic Response Score for Hydrochlorothiazide Use: Insights From Genomics and Metabolomics Integration. Hypertension 2016; 68:621-9. [PMID: 27381900 DOI: 10.1161/hypertensionaha.116.07328] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 06/05/2016] [Indexed: 12/21/2022]
Abstract
Hydrochlorothiazide is among the most commonly prescribed antihypertensives; yet, <50% of hydrochlorothiazide-treated patients achieve blood pressure (BP) control. Herein, we integrated metabolomic and genomic profiles of hydrochlorothiazide-treated patients to identify novel genetic markers associated with hydrochlorothiazide BP response. The primary analysis included 228 white hypertensives treated with hydrochlorothiazide from the Pharmacogenomic Evaluation of Antihypertensive Responses (PEAR) study. Genome-wide analysis was conducted using Illumina Omni 1 mol/L-Quad Chip, and untargeted metabolomics was performed on baseline fasting plasma samples using a gas chromatography-time-of-flight mass spectrometry platform. We found 13 metabolites significantly associated with hydrochlorothiazide systolic BP (SBP) and diastolic BP (DBP) responses (false discovery rate, <0.05). In addition, integrating genomic and metabolomic data revealed 3 polymorphisms (rs2727563 PRKAG2, rs12604940 DCC, and rs13262930 EPHX2) along with arachidonic acid, converging in the netrin signaling pathway (P=1×10(-5)), as potential markers, significantly influencing hydrochlorothiazide BP response. We successfully replicated the 3 genetic signals in 212 white hypertensives treated with hydrochlorothiazide and created a response score by summing their BP-lowering alleles. We found patients carrying 1 response allele had a significantly lower response than carriers of 6 alleles (∆SBP/∆DBP: -1.5/1.2 versus -16.3/-10.4 mm Hg, respectively, SBP score, P=1×10(-8) and DBP score, P=3×10(-9)). This score explained 11.3% and 11.9% of the variability in hydrochlorothiazide SBP and DBP responses, respectively, and was further validated in another independent study of 196 whites treated with hydrochlorothiazide (DBP score, P=0.03; SBP score, P=0.07). This study suggests that PRKAG2, DCC, and EPHX2 might be important determinants of hydrochlorothiazide BP response.
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Affiliation(s)
- Mohamed H Shahin
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Yan Gong
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Caitrin W McDonough
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Daniel M Rotroff
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Amber L Beitelshees
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Timothy J Garrett
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - John G Gums
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Alison Motsinger-Reif
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Arlene B Chapman
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Stephen T Turner
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Eric Boerwinkle
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Reginald F Frye
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Oliver Fiehn
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Rhonda M Cooper-DeHoff
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Rima Kaddurah-Daouk
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.)
| | - Julie A Johnson
- From the Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics (M.H.S., Y.G., C.W.M., J.G.G., R.F.F., R.M.C.-D., J.A.J.) and Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine (T.J.G.), University of Florida, Gainesville; Department of Statistics, Bioinformatics Research Center, North Carolina State University, Raleigh (D.M.R., A.M.-R.); Department of Medicine, University of Maryland, Baltimore (A.L.B.); Department of Medicine, Emory University, Atlanta, GA (A.B.C.); Division of Nephrology and Hypertension, Department of Medicine, College of Medicine, Mayo Clinic, Rochester, MN (S.T.T.); Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, (E.B.); Department of Molecular and Cellular Biology and Genome Center, University of California, Davis (O.F.); and Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC (R.K.-D.).
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Kaneko K, Ohkawa Y, Hashimoto N, Ohmi Y, Kotani N, Honke K, Ogawa M, Okajima T, Furukawa K, Furukawa K. Neogenin, Defined as a GD3-associated Molecule by Enzyme-mediated Activation of Radical Sources, Confers Malignant Properties via Intracytoplasmic Domain in Melanoma Cells. J Biol Chem 2016; 291:16630-43. [PMID: 27288875 DOI: 10.1074/jbc.m115.708834] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Indexed: 11/06/2022] Open
Abstract
To investigate mechanisms for increased malignant properties in malignant melanomas by ganglioside GD3, enzyme-mediated activation of radical sources and subsequent mass spectrometry were performed using an anti-GD3 antibody and GD3-positive (GD3+) and GD3-negative (GD3-) melanoma cell lines. Neogenin, defined as a GD3-neighbored molecule, was largely localized in lipid/rafts in GD3+ cells. Silencing of neogenin resulted in the reduction of cell growth and invasion activity. Physical association between GD3 and neogenin was demonstrated by immunoblotting of the immunoprecipitates with anti-neogenin antibody from GD3+ cell lysates. The intracytoplasmic domain of neogenin (Ne-ICD) was detected in GD3+ cells at higher levels than in GD3- cells when cells were treated by a proteasome inhibitor but not when simultaneously treated with a γ-secretase inhibitor. Exogenous GD3 also induced increased Ne-ICD in GD3- cells. Overexpression of Ne-ICD in GD3- cells resulted in the increased cell growth and invasion activity, suggesting that Ne-ICD plays a role as a transcriptional factor to drive malignant properties of melanomas after cleavage with γ-secretase. γ-Secretase was found in lipid/rafts in GD3+ cells. Accordingly, immunocyto-staining revealed that GD3, neogenin, and γ-secretase were co-localized at the leading edge of GD3+ cells. All these results suggested that GD3 recruits γ-secretase to lipid/rafts, allowing efficient cleavage of neogenin. ChIP-sequencing was performed to identify candidates of target genes of Ne-ICD. Some of them actually showed increased expression after expression of Ne-ICD, probably exerting malignant phenotypes of melanomas under GD3 expression.
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Affiliation(s)
- Kei Kaneko
- From the Department of Biochemistry II, Nagoya University Graduate School of Medicine, Nagoya 466-0065
| | - Yuki Ohkawa
- Department of Life Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasuigai, Aichi 487-8501
| | - Noboru Hashimoto
- From the Department of Biochemistry II, Nagoya University Graduate School of Medicine, Nagoya 466-0065
| | - Yuhsuke Ohmi
- From the Department of Biochemistry II, Nagoya University Graduate School of Medicine, Nagoya 466-0065
| | - Norihiro Kotani
- Department of Biochemistry, Faculty of Medicine, Saitama Medical University, Moroyama-machi, Iruma-gun, Saitama 350-0495, and
| | - Koichi Honke
- Department of Biochemistry, Kochi University School of Medicine, Kochi 783-8505, Japan
| | - Mitsutaka Ogawa
- From the Department of Biochemistry II, Nagoya University Graduate School of Medicine, Nagoya 466-0065
| | - Tetsuya Okajima
- From the Department of Biochemistry II, Nagoya University Graduate School of Medicine, Nagoya 466-0065
| | - Keiko Furukawa
- Department of Life Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasuigai, Aichi 487-8501
| | - Koichi Furukawa
- From the Department of Biochemistry II, Nagoya University Graduate School of Medicine, Nagoya 466-0065, Department of Life Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasuigai, Aichi 487-8501,
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