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Bellina M, Bernet A. [Netrin-1, a novel antitumoral target]. Med Sci (Paris) 2022; 38:351-358. [PMID: 35485895 DOI: 10.1051/medsci/2022038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Netrin-1, a secreted molecule that was first described for its role in guidance during embryogenesis, was then brought to light for its overexpression in a large number of aggressive cancers. Netrin-1 is a ligand of "dependence receptors". In adults, the interaction between Netrine-1 and these receptors triggers the survival, proliferation, and migration of different cell types. This will confer better survival properties to tumor cells, making them more prone to form aggressive tumors. A recently developed novel therapy aims at inhibiting the binding of Netrin-1 to these receptors in order to trigger cell death by apoptosis. This article presents a review of the functional characteristics of the Netrin-1 molecule, and the potential effects of a novel targeted therapy against Netrin-1 that could lead to very promising results in combination with conventional anti-cancer treatments.
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Affiliation(s)
- Mélanie Bellina
- Centre de recherche en cancérologie de Lyon (CRCL), Centre Léon Bérard, 28 rue Laennec, 69008 Lyon, France
| | - Agnès Bernet
- Centre de recherche en cancérologie de Lyon (CRCL), Centre Léon Bérard, 28 rue Laennec, 69008 Lyon, France
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2
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Kalani A, Chaturvedi P, Kalani K, Kamat PK, Chaturvedi P. A high methionine, low folate and vitamin B 6/B 12 containing diet can be associated with memory loss by epigenetic silencing of netrin-1. Neural Regen Res 2019; 14:1247-1254. [PMID: 30804256 PMCID: PMC6425846 DOI: 10.4103/1673-5374.251333] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Memory-epigenetics which is the loss of memory due to epigenetic modifications can be due to the silencing of genes involved in cognitive functions and this is the basis of the current study. We hypothesize that a diet containing high methionine and low vitamins can lead to memory impairment by increasing global DNA methylation and therefore, silencing the netrin-1 gene, which encodes the glycoprotein involved in neurogenesis, axonal guidance and maintenance of the synaptic plasticity. Wild type (C57BL/6J) mice were fed with a diet containing excess methionine (1.2%), low-folate (0.08 mg/kg), vitamin B6 (0.01 mg/kg), and B12 (10.4 mg/kg) for 6 weeks. Mice were examined weekly for the long-term memory function, using a passive avoidance test, which determined loss of fear-motivated long-term memory starting from the fourth week of diet. Similarly, an increase in brain %5-methyl cytosine was observed starting from the 4th week of diet in mice. Mice fed with a high methionine, low folate and vitamins containing diet showed a decrease in netrin-1 protein expression and an increase in netrin-1 gene promotor methylation, as determined by methylation-sensitive restriction enzyme-polymerase chain reaction analysis. The increase in methylation of netrin-1 gene was validated by high-resolution melting and sequencing analysis. Furthermore, the association of netrin-1 with memory was established by administering netrin that considerably restored long-term fear motivated memory. Taken together, these results suggest that a diet rich in methionine and lacking in folate and vitamin B6/B12 can induce defects in learning and memory. Furthermore, the data indicates that decrease in netrin-1 expression due to hyper-methylation of its gene can be associated with memory loss. The animal procedures were approved by the Institutional Animal Care and Use Committee, University of Louisville, USA (No. A3586-01) on February 2, 2018.
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Affiliation(s)
- Anuradha Kalani
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, USA
| | - Pankaj Chaturvedi
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, USA
| | - Komal Kalani
- Medicinal Chemistry Department, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India; Pharmacology Department and Toxicology, Higuchi Biosciences Center, University of Kansas, Lawrence, KS, USA
| | - Pradip K Kamat
- Department of Physiology, School of Medicine, University of Louisville, Louisville, KY, USA
| | - Poonam Chaturvedi
- Department of Neurology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Lucknow, India
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3
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Boyer NP, Gupton SL. Revisiting Netrin-1: One Who Guides (Axons). Front Cell Neurosci 2018; 12:221. [PMID: 30108487 PMCID: PMC6080411 DOI: 10.3389/fncel.2018.00221] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 07/09/2018] [Indexed: 12/28/2022] Open
Abstract
Proper patterning of the nervous system requires that developing axons find appropriate postsynaptic partners; this entails microns to meters of extension through an extracellular milieu exhibiting a wide range of mechanical and chemical properties. Thus, the elaborate networks of fiber tracts and non-fasciculated axons evident in mature organisms are formed via complex pathfinding. The macroscopic structures of axon projections are highly stereotyped across members of the same species, indicating precise mechanisms guide their formation. The developing axon exhibits directionally biased growth toward or away from external guidance cues. One of the most studied guidance cues is netrin-1, however, its presentation in vivo remains debated. Guidance cues can be secreted to form soluble or chemotactic gradients or presented bound to cells or the extracellular matrix to form haptotactic gradients. The growth cone, a highly specialized dynamic structure at the end of the extending axon, detects these guidance cues via transmembrane receptors, such as the netrin-1 receptors deleted in colorectal cancer (DCC) and UNC5. These receptors orchestrate remodeling of the cytoskeleton and cell membrane through both chemical and mechanotransductive pathways, which result in traction forces generated by the cytoskeleton against the extracellular environment and translocation of the growth cone. Through intracellular signaling responses, netrin-1 can trigger either attraction or repulsion of the axon. Here we review the mechanisms by which the classical guidance cue netrin-1 regulates intracellular effectors to respond to the extracellular environment in the context of axon guidance during development of the central nervous system and discuss recent findings that demonstrate the critical importance of mechanical forces in this process.
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Affiliation(s)
- Nicholas P. Boyer
- Neurobiology Curriculum, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Stephanie L. Gupton
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Neuroscience Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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Rong Y, Bansal PK, Wei P, Guo H, Correia K, Parris J, Morgan JI. Glycosylation of Cblns attenuates their receptor binding. Brain Res 2018; 1694:129-139. [PMID: 29782851 DOI: 10.1016/j.brainres.2018.05.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/11/2018] [Accepted: 05/18/2018] [Indexed: 01/11/2023]
Abstract
Cbln1 is the prototype of a family (Cbln1-Cbln4) of secreted glycoproteins and is essential for normal synapse structure and function in cerebellum by bridging presynaptic Nrxn to postsynaptic Grid2. Here we report the effects of glycosylation on the in vitro receptor binding properties of Cblns. Cbln1, 2 and 4 harbor two N-linked glycosylation sites, one at the N-terminus is in a region implicated in Nrxn binding and the second is in the C1q domain, a region involved in Grid2 binding. Mutation (asparagine to glutamine) of the N-terminal site, increased neurexin binding whereas mutation of the C1q site markedly increased Grid2 binding. These mutations did not influence subunit composition of Cbln trimeric complexes (mediated through the C1q domain) nor their assembly into hexamers (mediated by the N-terminal region). Therefore, glycosylation likely masks the receptor binding interfaces of Cblns. As Cbln4 has undetectable Grid2 binding in vitro we assessed whether transgenic expression of wild type Cbln4 or its glycosylation mutants rescued the Cbln1-null phenotype in vivo. Cbln4 partially rescued and both glycosylation mutants completely rescued ataxia in cbln1-null mice. Thus Cbln4 has intrinsic Grid2 binding that is attenuated by glycosylation, and glycosylation mutants exhibit gain of function in vivo.
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Affiliation(s)
- Yongqi Rong
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Parmil K Bansal
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Peng Wei
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Hong Guo
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Kristen Correia
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jennifer Parris
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - James I Morgan
- Department of Developmental Neurobiology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
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Liu M, Yin C, Jia Z, Li K, Zhang Z, Zhao Y, Gong X, Liu X, Li P, Fan Y. Protective Effect of Moderate Exogenous Electric Field Stimulation on Activating Netrin-1/DCC Expression Against Mechanical Stretch-Induced Injury in Spinal Cord Neurons. Neurotox Res 2018; 34:285-294. [PMID: 29627918 DOI: 10.1007/s12640-018-9885-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 02/16/2018] [Accepted: 02/27/2018] [Indexed: 12/30/2022]
Abstract
Nerve cells detect and respond to electric field stimulation and extrinsic chemical guidance cues during development and regeneration; therefore, the development and optimization of an approach for functional neuronal regeneration are necessary for a nerve injury. In this study, we proposed using electric field stimulation to repair a nerve injury triggered by serious mechanical stretch loading. A device that provides continuous mechanical stretch and constant electric field stimulation was designed. Primary dissociated spinal cord neurons were stimulated by mechanical stretch (tensile strain 2.5-10%) at different times (1, 4, 8, and 12 h) to set up a moderate nerve injury model. Stimulated samples were evaluated with respect to cell viability, density, and axonal elongation by the MTT and immunofluorescence assays. The results indicated that mechanical stretch (S, 5% tensile strain, 4 h) caused moderate axonal injury, resulting in significant loss of cell viability and a decrease in cell density. However, injured spinal cord neurons became viable after electric field stimulation (E, 33 mA/m2, 4 h) in the fluorescein diacetate assay. In addition, neuronal viability, density, and elongation increased significantly after electric field stimulation compared with those of stretch-injured neurons. Moreover, electric field stimulation significantly activated the axonal guidance cues Netrin-1 and deleted in colorectal cancer (DCC) receptor expression compared with the stretch-injury group. These results indicate that electric stimulation activates synergistic guidance cues of expression to improve axonal growth relevant to nerve injuries. Our study provides new insight into neuronal regeneration.
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Affiliation(s)
- Meili Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Chuanwei Yin
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Zhengtai Jia
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Kun Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Zhifa Zhang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Yuchen Zhao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Xianghui Gong
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Xiaoyu Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Ping Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China. .,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China.
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China. .,Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing, 100083, China. .,Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, National Research Center for Rehabilitation Technical Aids, Beijing, 100176, China.
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Plooster M, Menon S, Winkle CC, Urbina FL, Monkiewicz C, Phend KD, Weinberg RJ, Gupton SL. TRIM9-dependent ubiquitination of DCC constrains kinase signaling, exocytosis, and axon branching. Mol Biol Cell 2017; 28:2374-2385. [PMID: 28701345 PMCID: PMC5576901 DOI: 10.1091/mbc.e16-08-0594] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 06/28/2017] [Accepted: 07/05/2017] [Indexed: 11/30/2022] Open
Abstract
In the presence of netrin, tripartite motif protein 9 (TRIM9) promotes deleted in colorectal cancer (DCC) clustering, but TRIM9-dependent ubiquitination of DCC is reduced. Loss of ubiquitination promotes an interaction between DCC and FAK and FAK activation. FAK activation is required for the progression from SNARE assembly to exocytic vesicle fusion, which supplies membrane material for axon branching. Extracellular netrin-1 and its receptor deleted in colorectal cancer (DCC) promote axon branching in developing cortical neurons. Netrin-dependent morphogenesis is preceded by multimerization of DCC, activation of FAK and Src family kinases, and increases in exocytic vesicle fusion, yet how these occurrences are linked is unknown. Here we demonstrate that tripartite motif protein 9 (TRIM9)-dependent ubiquitination of DCC blocks the interaction with and phosphorylation of FAK. Upon netrin-1 stimulation TRIM9 promotes DCC multimerization, but TRIM9-dependent ubiquitination of DCC is reduced, which promotes an interaction with FAK and subsequent FAK activation. We found that inhibition of FAK activity blocks elevated frequencies of exocytosis in vitro and elevated axon branching in vitro and in vivo. Although FAK inhibition decreased soluble N-ethylmaleimide attachment protein receptor (SNARE)-mediated exocytosis, assembled SNARE complexes and vesicles adjacent to the plasma membrane increased, suggesting a novel role for FAK in the progression from assembled SNARE complexes to vesicle fusion in developing murine neurons.
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Affiliation(s)
- Melissa Plooster
- Cell Biology and Physiology Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Shalini Menon
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Cortney C Winkle
- Neurobiology Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Fabio L Urbina
- Cell Biology and Physiology Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Caroline Monkiewicz
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Kristen D Phend
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Richard J Weinberg
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Stephanie L Gupton
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 .,Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
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7
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Plissonnier ML, Lahlali T, Mehlen P, Parent R. [Hepatitis C, EGFR, cirrhosis and netrin-1: potential implications for HCC onset]. Med Sci (Paris) 2016; 32:566-8. [PMID: 27406760 DOI: 10.1051/medsci/20163206013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Thomas Lahlali
- Centre de recherche en cancérologie de Lyon, 151, cours Albert Thomas, 69424 Lyon, France
| | - Patrick Mehlen
- Centre de recherche en cancérologie de Lyon, 151, cours Albert Thomas, 69424 Lyon, France
| | - Romain Parent
- Centre de recherche en cancérologie de Lyon, 151, cours Albert Thomas, 69424 Lyon, France
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8
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Mehlen P, Lavial F. [The netrin-1 cue regulates somatic cell reprogramming to pluripotency]. Med Sci (Paris) 2016; 32:241-4. [PMID: 27011240 DOI: 10.1051/medsci/20163203005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Patrick Mehlen
- Laboratoire Apoptose, Cancer et Développement - équipe labellisée La Ligue, LabEx DEVweCAN, centre de recherche en cancérologie de Lyon, Inserm U1052-CNRS UMR5286, université de Lyon, centre Léon Bérard, 28, rue Laennec, 69008 Lyon, France
| | - Fabrice Lavial
- Laboratoire Reprogrammation cellulaire et oncogenèse - équipe ATIP/Avenir, centre de recherche en cancérologie de Lyon, Inserm U1052-CNRS UMR5286, université de Lyon, centre Léon Bérard, 69008 Lyon, France
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9
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Semaphorin-1 and netrin signal in parallel and permissively to position the male ray 1 sensillum in Caenorhabditis elegans. Genetics 2012; 192:959-71. [PMID: 22942127 DOI: 10.1534/genetics.112.144253] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Netrin and semaphorin axon guidance cues have been found to function in the genesis of several mammalian organs; however, little is known about the underlying molecular mechanisms involved. A genetic approach could help to reveal the underpinnings of these mechanisms. The most anterior ray sensillum (ray 1) in the Caenorhabditis elegans male tail is frequently displaced anterior to its normal position in smp-1/semaphorin-1a and plexin-1/plx-1 mutants. Here we report that UNC-6/netrin and its UNC-40/DCC receptor signal in parallel to SMP-1/semaphorin-1a and its PLX-1/plexin-1 receptor to prevent the anterior displacement of ray 1 and that UNC-6 plus SMP-1 signaling can account entirely for this function. We also report that mab-20/semaphorin-2a mutations, which prevent the separation of neighboring rays and cause ray fusions, suppress the anterior displacements of ray 1 caused by deficiencies in SMP-1 and UNC-6 signaling and this is independent of the ray fusion phenotype, whereas overexpression of UNC-40 and PLX-1 cause ray fusions. This suggests that for ray 1 positioning, a balance is struck between a tendency of SMP-1 and UNC-6 signaling to prevent ray 1 from moving away from ray 2 and a tendency of MAB-20/semaphorin-2a signaling to separate all rays from each other. Additional evidence suggests this balance involves the relative adhesion of the ray 1 structural cell to neighboring SET and hyp 7 hypodermal cells. This finding raises the possibility that changes in ray 1 positioning depend on passive movements caused by attachment to the elongating SET cell in opposition to the morphologically more stable hyp 7 cell. Several lines of evidence indicate that SMP-1 and UNC-6 function permissively in the context of ray 1 positioning.
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11
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Stettler O. [How to do more with less within the nervous system: engrailed chooses the mitochondria]. Med Sci (Paris) 2012; 28:470-3. [PMID: 22642998 DOI: 10.1051/medsci/2012285009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zhang Y, Janssens SP, Wingler K, Schmidt HHHW, Moens AL. Modulating endothelial nitric oxide synthase: a new cardiovascular therapeutic strategy. Am J Physiol Heart Circ Physiol 2011; 301:H634-46. [PMID: 21622818 DOI: 10.1152/ajpheart.01315.2010] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The pathogenesis of many cardiovascular diseases is associated with reduced nitric oxide (NO) bioavailability and/or increased endothelial NO synthase (eNOS)-dependent superoxide formation. These findings support that restoring and conserving adequate NO signaling in the heart and blood vessels is a promising therapeutic intervention. In particular, modulating eNOS, e.g., through increasing the bioavailability of its substrate and cofactors, enhancing its transcription, and interfering with other modulators of eNOS pathway, such as netrin-1, has a high potential for effective treatments of cardiovascular diseases. This review provides an overview of the possibilities for modulating eNOS and how this may be translated to the clinic in addition to describing the genetic models used to study eNOS modulation.
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Affiliation(s)
- Yixuan Zhang
- Department of Cardiology, Maastricht University Medical Centre, Cardiovascular Research Institute Maastricht, Maastricht, The Netherlands
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Zhang Y, Tong X. Expression of the actin-binding proteins indicates that cofilin and fascin are related to breast tumour size. J Int Med Res 2010; 38:1042-8. [PMID: 20819441 DOI: 10.1177/147323001003800331] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study was designed to investigate the expression of four actin-binding proteins, alpha-actinin-4, cofilin 1, fascin and elongation factor 1-alpha 2 (eEF1A2), in samples of breast cancer from 112 patients with different stages of breast cancer (stages T0 - T1, T2 and T3) compared with normal control tissues (n = 33). Levels of eEF1A2 and alpha-actinin-4 mRNA appeared to be unrelated to tumour size, except for a significant down-regulation of alpha-actinin-4 mRNA in T3 cases. Significant up-regulation of cofilin 1 mRNA was associated with stages T0 - T1 and T2; up-regulation seen at stage T3 was not significant compared with control tissue. Fascin mRNA levels were significantly reduced at all three tumour stages (T0 - T1, T2 and T3) compared with control tissue. In conclusion, some components of the actin cytoskeletal system might hold significant potential as targets in future cancer therapies.
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Affiliation(s)
- Y Zhang
- Department of Obstetrics and Gynaecology, Tongji Hospital of Tongji University, Shanghai, China
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15
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Petit A. [Netrin-1 and stem cells, attraction or repulsion?]. Med Sci (Paris) 2010; 26:25-8. [PMID: 20132768 DOI: 10.1051/medsci/201026125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Courchet J, Buchet-Poyau K, Le Borgne M, Billaud M. [The novel function of the tumor suppressor APC in recruiting polarized RNAs in migrating cells]. Med Sci (Paris) 2009; 25:12-4. [PMID: 19154683 DOI: 10.1051/medsci/200925112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chédotal A, Renaud J. [Nucleus translocation in migrating neurons: key control by Sema6A and plexin A2]. Med Sci (Paris) 2008; 24:797-8. [PMID: 18950570 DOI: 10.1051/medsci/20082410797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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