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Xu DH, Du JK, Liu SY, Zhang H, Yang L, Zhu XY, Liu YJ. Upregulation of KLK8 contributes to CUMS-induced hippocampal neuronal apoptosis by cleaving NCAM1. Cell Death Dis 2023; 14:278. [PMID: 37076499 PMCID: PMC10115824 DOI: 10.1038/s41419-023-05800-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 04/02/2023] [Accepted: 04/06/2023] [Indexed: 04/21/2023]
Abstract
Neuronal apoptosis has been well-recognized as a critical mediator in the pathogenesis of depressive disorders. Tissue kallikrein-related peptidase 8 (KLK8), a trypsin-like serine protease, has been implicated in the pathogenesis of several psychiatric disorders. The present study aimed to explore the potential function of KLK8 in hippocampal neuronal cell apoptosis associated with depressive disorders in rodent models of chronic unpredictable mild stress (CUMS)-induced depression. It was found that depression-like behavior in CUMS-induced mice was associated with hippocampal KLK8 upregulation. Transgenic overexpression of KLK8 exacerbated, whereas KLK8 deficiency attenuated CUMS-induced depression-like behaviors and hippocampal neuronal apoptosis. In HT22 murine hippocampal neuronal cells and primary hippocampal neurons, adenovirus-mediated overexpression of KLK8 (Ad-KLK8) was sufficient to induce neuron apoptosis. Mechanistically, it was identified that the neural cell adhesion molecule 1 (NCAM1) may associate with KLK8 in hippocampal neurons as KLK8 proteolytically cleaved the NCAM1 extracellular domain. Immunofluorescent staining exhibited decreased NCAM1 in hippocampal sections obtained from mice or rats exposed to CUMS. Transgenic overexpression of KLK8 exacerbated, whereas KLK8 deficiency largely prevented CUMS-induced loss of NCAM1 in the hippocampus. Both adenovirus-mediated overexpression of NCAM1 and NCAM1 mimetic peptide rescued KLK8-overexpressed neuron cells from apoptosis. Collectively, this study identified a new pro-apoptotic mechanism in the hippocampus during the pathogenesis of CUMS-induced depression via the upregulation of KLK8, and raised the possibility of KLK8 as a potential therapeutic target for depression.
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Affiliation(s)
- Dan-Hong Xu
- School of Kinesiology, Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, The Key Laboratory of Exercise and Health Sciences of Ministry of Education Shanghai University of Sport, Shanghai, 200438, China
- Department of Physiology, Navy Medical University, Shanghai, 200433, China
| | - Jian-Kui Du
- National Clinical Research Center for Geriatric Disorders and National International Joint Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, Hunan, 41008, China
| | - Shi-Yu Liu
- School of Kinesiology, Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, The Key Laboratory of Exercise and Health Sciences of Ministry of Education Shanghai University of Sport, Shanghai, 200438, China
| | - Hui Zhang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200092, China
| | - Lu Yang
- School of Kinesiology, Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, The Key Laboratory of Exercise and Health Sciences of Ministry of Education Shanghai University of Sport, Shanghai, 200438, China
| | - Xiao-Yan Zhu
- Department of Physiology, Navy Medical University, Shanghai, 200433, China.
| | - Yu-Jian Liu
- School of Kinesiology, Shanghai Frontiers Science Research Base of Exercise and Metabolic Health, The Key Laboratory of Exercise and Health Sciences of Ministry of Education Shanghai University of Sport, Shanghai, 200438, China.
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2
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Picard LK, Claus M, Fasbender F, Watzl C. Human NK cells responses are enhanced by CD56 engagement. Eur J Immunol 2022; 52:1441-1451. [PMID: 35775327 DOI: 10.1002/eji.202249868] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 06/03/2022] [Accepted: 06/29/2022] [Indexed: 11/09/2022]
Abstract
Natural Killer (NK) cells are important innate lymphocytes for effective immune responses against intracellular pathogens and tumors. CD56 is a well-known marker for human NK cells, but there is very limited information about a functional role of this surface receptor. Here we show that engagement of CD56 can induce NK cell activation resulting in degranulation, IFN-γ secretion and morphological changes, making CD56 a potential co-activating receptor in NK cells. Interestingly, this effect was only observed in cytokine pre-activated and not in freshly isolated human NK cells, demonstrating that NK cell reactivity upon CD56 engagement was dependent on cytokine stimulation. Inhibition of Syk, PI3K, Erk and src-family-kinases impaired CD56-mediated NK cell stimulation. Finally, we used CRISPR/Cas9 to delete CD56 from primary human NK cells. While this abolished the stimulatory effect of CD56 on pre-activated NK cells, the cytotoxic activity of NK cells against several tumor target cells was not affected by the absence of CD56. This demonstrates that the stimulating effect of CD56 on pre-activated NK cells does not have a major impact on their cytotoxic activity, but it may contribute to the function of CD56 as a fungal recognition receptor and in the NK cell developmental synapse. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Lea Katharina Picard
- Department for Immunology, Leibniz Research Centre for Working Environment and Human Factors at TU Dortmund (IfADo), Dortmund, Germany
| | - Maren Claus
- Department for Immunology, Leibniz Research Centre for Working Environment and Human Factors at TU Dortmund (IfADo), Dortmund, Germany
| | - Frank Fasbender
- Department for Immunology, Leibniz Research Centre for Working Environment and Human Factors at TU Dortmund (IfADo), Dortmund, Germany
| | - Carsten Watzl
- Department for Immunology, Leibniz Research Centre for Working Environment and Human Factors at TU Dortmund (IfADo), Dortmund, Germany
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3
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Martín-de-Saavedra MD, Santos MD, Penzes P. Intercellular signaling by ectodomain shedding at the synapse. Trends Neurosci 2022; 45:483-498. [DOI: 10.1016/j.tins.2022.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/21/2022] [Accepted: 03/11/2022] [Indexed: 12/21/2022]
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4
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Bin-Jumah MN, Nadeem MS, Gilani SJ, Al-Abbasi FA, Ullah I, Alzarea SI, Ghoneim MM, Alshehri S, Uddin A, Murtaza BN, Kazmi I. Genes and Longevity of Lifespan. Int J Mol Sci 2022; 23:1499. [PMID: 35163422 PMCID: PMC8836117 DOI: 10.3390/ijms23031499] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/04/2022] [Accepted: 01/26/2022] [Indexed: 12/12/2022] Open
Abstract
Aging is a complex process indicated by low energy levels, declined physiological activity, stress induced loss of homeostasis leading to the risk of diseases and mortality. Recent developments in medical sciences and an increased availability of nutritional requirements has significantly increased the average human lifespan worldwide. Several environmental and physiological factors contribute to the aging process. However, about 40% human life expectancy is inherited among generations, many lifespan associated genes, genetic mechanisms and pathways have been demonstrated during last decades. In the present review, we have evaluated many human genes and their non-human orthologs established for their role in the regulation of lifespan. The study has included more than fifty genes reported in the literature for their contributions to the longevity of life. Intact genomic DNA is essential for the life activities at the level of cell, tissue, and organ. Nucleic acids are vulnerable to oxidative stress, chemotherapies, and exposure to radiations. Efficient DNA repair mechanisms are essential for the maintenance of genomic integrity, damaged DNA is not replicated and transferred to next generations rather the presence of deleterious DNA initiates signaling cascades leading to the cell cycle arrest or apoptosis. DNA modifications, DNA methylation, histone methylation, histone acetylation and DNA damage can eventually lead towards apoptosis. The importance of calorie restriction therapy in the extension of lifespan has also been discussed. The role of pathways involved in the regulation of lifespan such as DAF-16/FOXO (forkhead box protein O1), TOR and JNK pathways has also been particularized. The study provides an updated account of genetic factors associated with the extended lifespan and their interactive contributory role with cellular pathways.
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Affiliation(s)
- May Nasser Bin-Jumah
- Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia;
- Environment and Biomaterial Unit, Health Sciences Research Center, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Muhammad Shahid Nadeem
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Sadaf Jamal Gilani
- Department of Basic Health Sciences, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia;
| | - Fahad A. Al-Abbasi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Inam Ullah
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, Pakistan;
| | - Sami I. Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia;
| | - Mohammed M. Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Ad Diriyah 13713, Saudi Arabia;
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Aziz Uddin
- Department of Biotechnology and Genetic Engineering, Hazara University, Mansehra 21300, Pakistan;
| | - Bibi Nazia Murtaza
- Department of Zoology, Abbottabad University of Science and Technology (AUST), Abbottabad 22310, Pakistan;
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
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Deak D, Gorcea-Andronic N, Sas V, Teodorescu P, Constantinescu C, Iluta S, Pasca S, Hotea I, Turcas C, Moisoiu V, Zimta AA, Galdean S, Steinheber J, Rus I, Rauch S, Richlitzki C, Munteanu R, Jurj A, Petrushev B, Selicean C, Marian M, Soritau O, Andries A, Roman A, Dima D, Tanase A, Sigurjonsson O, Tomuleasa C. A narrative review of central nervous system involvement in acute leukemias. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:68. [PMID: 33553361 PMCID: PMC7859772 DOI: 10.21037/atm-20-3140] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Acute leukemias (both myeloid and lymphoblastic) are a group of diseases for which each year more successful therapies are implemented. However, in a subset of cases the overall survival (OS) is still exceptionally low due to the infiltration of leukemic cells in the central nervous system (CNS) and the subsequent formation of brain tumors. The CNS involvement is more common in acute lymphocytic leukemia (ALL), than in adult acute myeloid leukemia (AML), although the rates for the second case might be underestimated. The main reasons for CNS invasion are related to the expression of specific adhesion molecules (VLA-4, ICAM-1, VCAM, L-selectin, PECAM-1, CD18, LFA-1, CD58, CD44, CXCL12) by a subpopulation of leukemic cells, called “sticky cells” which have the ability to interact and adhere to endothelial cells. Moreover, the microenvironment becomes hypoxic and together with secretion of VEGF-A by ALL or AML cells the permeability of vasculature in the bone marrow increases, coupled with the disruption of blood brain barrier. There is a single subpopulation of leukemia cells, called leukemia stem cells (LSCs) that is able to resist in the new microenvironment due to its high adaptability. The LCSs enter into the arachnoid, migrate, and intensively proliferate in cerebrospinal fluid (CSF) and consequently infiltrate perivascular spaces and brain parenchyma. Moreover, the CNS is an immune privileged site that also protects leukemic cells from chemotherapy. CD56/NCAM is the most important surface molecule often overexpressed by leukemic stem cells that offers them the ability to infiltrate in the CNS. Although asymptomatic or with unspecific symptoms, CNS leukemia should be assessed in both AML/ALL patients, through a combination of flow cytometry and cytological analysis of CSF. Intrathecal therapy (ITT) is a preventive measure for CNS involvement in AML and ALL, still much research is needed in finding the appropriate target that would dramatically lower CNS involvement in acute leukemia.
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Affiliation(s)
- Dalma Deak
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Nicolae Gorcea-Andronic
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Valentina Sas
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Department of Pediatrics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Patric Teodorescu
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Catalin Constantinescu
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Intensive Care Unit, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Sabina Iluta
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Sergiu Pasca
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ionut Hotea
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristina Turcas
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Vlad Moisoiu
- Department of Neurosurgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alina-Andreea Zimta
- Medfuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Simona Galdean
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Jakob Steinheber
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Rus
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Sebastian Rauch
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cedric Richlitzki
- Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Raluca Munteanu
- Medfuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ancuta Jurj
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Bobe Petrushev
- Medfuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristina Selicean
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Mirela Marian
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Olga Soritau
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Alexandra Andries
- Department of Radiology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Andrei Roman
- Department of Radiology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Radiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Delia Dima
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania
| | - Alina Tanase
- Department of Stem Cell Transplantation, Fundeni Clinical Institute, Bucharest, Romania
| | | | - Ciprian Tomuleasa
- Department of Hematology, Ion Chiricuta Clinical Cancer Center, Cluj-Napoca, Romania.,Department of Hematology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Medfuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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6
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Göçer M, Kurtoğlu E. Is absence of CD56 a predictive factor for peripheral blood stem cell mobilization failure in patients with multiple myeloma? J Clin Apher 2020; 36:332-339. [PMID: 33333593 DOI: 10.1002/jca.21864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/22/2020] [Accepted: 12/06/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND CD56 is believed to play a major role in MM pathogenesis with a 70% to 80% expression rate in malignant plasma cells at the time of diagnosis. Our objective in this study was to investigate the relationship between the characteristics of CD56 expression in bone marrow aspiration material at the time of diagnosis and the success of stem cell mobilization in patients diagnosed with MM. METHODS This monocenter study included 94 patients who were diagnosed with MM and had a stem cell mobilization procedure for autologous hematopoietic stem cell transplantation. The primary endpoint of the study was to compare the mobilization success between the groups with and without CD56 expression. The secondary endpoint was to identify other factors affecting mobilization failure outside CD56. RESULTS At the time of diagnosis, 49 (52.1%) patients had CD56 expression and 45 (47.9%) did not. Mobilization failed in 11 (11.7%) patients. Age, gender, ISS stage and the number of premobilization treatment regimens were not found predictive of mobilization failure. CD56 negativity was 42.2% in the group that had mobilization success and 90.9% in the group that had mobilization failure (P = .001). CONCLUSIONS The fact that CD56 residing on the membrane enables interaction between bone marrow cells and ECM and functions as a signal molecule increases sensitivity to the chemotherapy and G-CSF that are used for mobilization. We found that absence of CD56 can be used as a predictive factor for mobilization failure at the time of diagnosis.
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Affiliation(s)
- Mesut Göçer
- Department of Internal Medicine, Division of Hematology, Antalya Training and Research Hospital, Antalya, Turkey
| | - Erdal Kurtoğlu
- Department of Internal Medicine, Division of Hematology, Antalya Training and Research Hospital, Antalya, Turkey
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7
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Gunesch JT, Dixon AL, Ebrahim TAM, Berrien-Elliott MM, Tatineni S, Kumar T, Hegewisch-Solloa E, Fehniger TA, Mace EM. CD56 regulates human NK cell cytotoxicity through Pyk2. eLife 2020; 9:e57346. [PMID: 32510326 PMCID: PMC7358009 DOI: 10.7554/elife.57346] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 06/07/2020] [Indexed: 12/12/2022] Open
Abstract
Human natural killer (NK) cells are defined as CD56+CD3-. Despite its ubiquitous expression on human NK cells the role of CD56 (NCAM) in human NK cell cytotoxic function has not been defined. In non-immune cells, NCAM can induce signaling, mediate adhesion, and promote exocytosis through interactions with focal adhesion kinase (FAK). Here we demonstrate that deletion of CD56 on the NK92 cell line leads to impaired cytotoxic function. CD56-knockout (KO) cells fail to polarize during immunological synapse (IS) formation and have severely impaired exocytosis of lytic granules. Phosphorylation of the FAK family member Pyk2 at tyrosine 402 is decreased in NK92 CD56-KO cells, demonstrating a functional link between CD56 and signaling in human NK cells. Cytotoxicity, lytic granule exocytosis, and the phosphorylation of Pyk2 are rescued by the reintroduction of CD56. These data highlight a novel functional role for CD56 in stimulating exocytosis and promoting cytotoxicity in human NK cells.
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Affiliation(s)
| | - Amera L Dixon
- Baylor College of MedicineHoustonUnited States
- Rice UniversityHoustonUnited States
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical CenterNew YorkUnited States
| | - Tasneem AM Ebrahim
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical CenterNew YorkUnited States
- Barnard CollegeNew YorkUnited States
| | | | | | | | - Everardo Hegewisch-Solloa
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical CenterNew YorkUnited States
| | - Todd A Fehniger
- Washington University School of MedicineSt. LouisUnited States
| | - Emily M Mace
- Department of Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical CenterNew YorkUnited States
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8
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NCAM1 (CD56) promotes leukemogenesis and confers drug resistance in AML. Blood 2019; 133:2305-2319. [PMID: 30814062 DOI: 10.1182/blood-2018-12-889725] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 02/21/2019] [Indexed: 02/07/2023] Open
Abstract
Neural cell adhesion molecule 1 (NCAM1; CD56) is expressed in up to 20% of acute myeloid leukemia (AML) patients. NCAM1 is widely used as a marker of minimal residual disease; however, the biological function of NCAM1 in AML remains elusive. In this study, we investigated the impact of NCAM1 expression on leukemogenesis, drug resistance, and its role as a biomarker to guide therapy. Beside t(8;21) leukemia, NCAM1 expression was found in most molecular AML subgroups at highly heterogeneous expression levels. Using complementary genetic strategies, we demonstrated an essential role of NCAM1 in the regulation of cell survival and stress resistance. Perturbation of NCAM1 induced cell death or differentiation and sensitized leukemic blasts toward genotoxic agents in vitro and in vivo. Furthermore, Ncam1 was highly expressed in leukemic progenitor cells in a murine leukemia model, and genetic depletion of Ncam1 prolonged disease latency and significantly reduced leukemia-initiating cells upon serial transplantation. To further analyze the mechanism of the NCAM1-associated phenotype, we performed phosphoproteomics and transcriptomics in different AML cell lines. NCAM1 expression strongly associated with constitutive activation of the MAPK-signaling pathway, regulation of apoptosis, or glycolysis. Pharmacological inhibition of MEK1/2 specifically inhibited proliferation and sensitized NCAM1+ AML cells to chemotherapy. In summary, our data demonstrate that aberrant expression of NCAM1 is involved in the maintenance of leukemic stem cells and confers stress resistance, likely due to activation of the MAPK pathway. Targeting MEK1/2 sensitizes AML blasts to genotoxic agents, indicating a role for NCAM1 as a biomarker to guide AML treatment.
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9
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Dai J, Wang K, Liu T, Wang Q, Pang Y. Retracted Article: Long non-coding RNA KCNQ1OT1 regulates cell proliferation, apoptosis and chemo-sensitivity through modulating the miR-186-5p/NCAM1 axis in acute myeloid leukemia cells. RSC Adv 2019; 9:36256-36265. [PMID: 35540579 PMCID: PMC9074956 DOI: 10.1039/c9ra06378a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 10/25/2019] [Indexed: 11/21/2022] Open
Abstract
Recent studies show that lncRNA KCNQ1OT1 and microRNA-186-5p (miR-186-5p) are involved in various human cancers. Moreover, it is reported that KCNQ1OT1 expression is upregulated in acute myeloid leukemia (AML). However, their roles in AML remain unknown. This study aimed to reveal the functional mechanism of KCNQ1OT1 and miR-186-5p in AML development. Quantitative real time polymerase chain reaction (qRT-PCR) was performed to detect the levels of genes. Cell proliferation and apoptosis were assessed by a 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay and flow cytometry analysis respectively. A western blot assay was carried out to examine the protein levels. In addition, the interaction between miR-186-5p and KCNQ1OT1 or neural cell adhesion molecule 1 (NCAM1) was predicted by bioinformatics analysis tool starbase2.0 and confirmed by the dual luciferase reporter assay. KCNQ1OT1 and NCAM1 expressions were increased and miR-186-5p expression was decreased in AML samples and cells. The depletion of KCNQ1OT1 inhibited cell proliferation, and promoted apoptosis and chemo-sensitivity in AML. In addition, the upregulation of miR-186-5p suppressed AML cell proliferation, and induced apoptosis and chemo-sensitivity. Interestingly, KCNQ1OT1 directly downregulated miR-186-5p expression and miR-186-5p decreased NCAM1 expression by binding to the 3′ untranslated region (UTR) of NCAM1 mRNA. Furthermore, miR-186-5p knockdown or NCAM1 overexpression reversed the effects of KCNQ1OT1 depletion on AML cell progression. Our results firstly revealed a linear relationship between KCNQ1OT1, miR-186-5p, and NCAM1, and demonstrated that KCNQ1OT1 mediated AML cell progression via regulating the miR-186-5p/NCAM1 axis, revealing functional mechanisms of KCNQ1OT1 and miR-186-5p in AML development. Recent studies show that lncRNA KCNQ1OT1 and microRNA-186-5p (miR-186-5p) are involved in various human cancers.![]()
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Affiliation(s)
- Jing Dai
- Department of Hematology
- Zhoukou Central Hospital
- Zhengzhou
- China
| | - Kai Wang
- Department of Hematology
- Zhoukou Central Hospital
- Zhengzhou
- China
| | - Tao Liu
- Department of Hematology
- Zhoukou Central Hospital
- Zhengzhou
- China
| | - Qiong Wang
- Department of Hematology
- Zhoukou Central Hospital
- Zhengzhou
- China
| | - Yingxu Pang
- Department of Hematology
- Zhoukou Central Hospital
- Zhengzhou
- China
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10
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NCAM Mimetic Peptides: Potential Therapeutic Target for Neurological Disorders. Neurochem Res 2018; 43:1714-1722. [DOI: 10.1007/s11064-018-2594-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 06/27/2018] [Accepted: 07/06/2018] [Indexed: 10/28/2022]
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11
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Zhao L, Li Y, Song X, Zhou H, Li N, Miao Y, Jia L. Upregulation of miR-181c inhibits chemoresistance by targeting ST8SIA4 in chronic myelocytic leukemia. Oncotarget 2018; 7:60074-60086. [PMID: 27527856 PMCID: PMC5312369 DOI: 10.18632/oncotarget.11054] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 07/10/2016] [Indexed: 12/02/2022] Open
Abstract
Chemotherapy resistance frequently drives tumor progression. Increased expression of ST8SIA4 has been reported in diverse carcinomas and highly correlates with leukemia multidrug resistance (MDR). MicroRNAs (miRNA) are widely recognized as key players in cancer progression and drug resistance. Here, to explore whether miRNA modulates the sensitivity of chronic myelocytic leukemia (CML) to chemotherapeutic agents and regulates ST8SIA4 expression, we analyzed the complete miRNA expression profile and found a subset of miRNAs specifically dysregulated in adriamycin-resistant CML cell line K562/ADR and its parent cell line K562. Compared with three pairs of CML cell lines and 38 clinical samples of peripheral blood mononuclear cells (PBMC) of CML patients, miR-181c expression was down-regulated in drug-resistant cell lines and CML/MDR samples. Altered expression levels of miR-181c influenced the MDR phenotypes of K562 and K562/ADR. Reporter-gene assay showed that miR-181c directly targeted and inhibited the ST8SIA4 expression, as well as miR-181c was inversely correlated with the levels of ST8SIA4 expression in CML cell lines and samples. Moreover, ST8SIA4 could reverse the effect of miR-181c on drug resistance in K562 and K562/ADR cells in vitro. Upregulation of miR-181c sensitized K562/ADR cells to adriamycin in vivo through directly suppressing ST8SIA4 expression. Further investigation showed that miR-181c mediated the activity of phosphoinositide-3 kinase (PI3K)/AKT signal pathway, and inhibition of PI3K/Akt in K562 cells counteracted miR-181c-mediated MDR phenotype. These data revealed an important role for miR-181c in the regulation of chemoresistance in CML, and suggested the potential application of miR-181c in drug resistance treatment.
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Affiliation(s)
- Lifen Zhao
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Yan Li
- Department of Clinical Laboratory, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Xiaobo Song
- Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Huimin Zhou
- Department of Microbiology, Dalian Medical University, Dalian, Liaoning Province, China
| | - Nana Li
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Yuan Miao
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Li Jia
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
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12
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Vartholomatos G, Stefanaki K, Alexiou GA, Batistatou A, Markopoulos GS, Tzoufi M, Sfakianos G, Prodromou N. Pediatric Brain Tumor Grading Based on CD56 Quantification. J Pediatr Neurosci 2018; 13:524-527. [PMID: 30937110 PMCID: PMC6413610 DOI: 10.4103/jpn.jpn_155_17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Affiliation(s)
- George Vartholomatos
- Hematology Laboratory, Unit of Molecular Biology, University Hospital of Ioannina, Ioannina, Greece
| | - Kalliopi Stefanaki
- Department of Pathology, Children's Hospital "Agia Sofia", Athens, Greece
| | - George A Alexiou
- Hematology Laboratory, Unit of Molecular Biology, University Hospital of Ioannina, Ioannina, Greece
| | - Anna Batistatou
- Department of Pathology, University Hospital of Ioannina, Ioannina, Greece
| | - Georgios S Markopoulos
- Laboratory of Biology, Faculty of Medicine, University of Ioannina, Ioannina, Greece.,Division of Biomedical Research, Institute of Molecular Biology and Biotechnology, FORTH University Campus, Ioannina, Greece
| | - Meropi Tzoufi
- Department of Pediatrics, University Hospital of Ioannina, Ioannina, Greece
| | - George Sfakianos
- Department of Neurosurgery, Children's Hospital "Agia Sofia", Athens, Greece
| | - Neofytos Prodromou
- Department of Neurosurgery, Children's Hospital "Agia Sofia", Athens, Greece
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13
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Chen K, Lu H, Gao T, Xue X, Wang C, Miao F. Synergic interaction between amyloid precursor protein and neural cell adhesion molecule promotes neurite outgrowth. Oncotarget 2017; 7:14199-206. [PMID: 26883101 PMCID: PMC4924708 DOI: 10.18632/oncotarget.7348] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 01/29/2016] [Indexed: 12/29/2022] Open
Abstract
Alzheimer's disease (AD) is one of the most common neurodegenerative diseases worldwide. The main features of AD are the pathological changes of density and distribution of intracellular neurofibrillary tangles (NFT) and extracellular amyloid plaques. The processing of amyloid beta precursor protein (APP) to β-amyloid peptide (Aβ) is one of the critical events in the pathogenesis of AD. In this study, we evaluated the role of the interaction of neural cell adhesion molecule (NCAM) and APP in neurite outgrowth using two different experimental systems: PC12E2 cells and hippocampal neurons that were isolated from wild type, APP knock-in and APP knock-out mice. PC12E2 cells or hippocampal neurons were co-cultured with NCAM-negative or NCAM-positive fibroblasts L929 cells. We found that APP promoted neurite outgrowth of PC12E2 cells and hippocampal neurons in either the presence or absence of NCAM. Secreted APP can rescue the neurite outgrowth in hippocampal neurons from APP knock-out mice. The interaction of APP and NCAM had synergic effect in promoting neurite outgrowth in both PC12E2 cells and hippocampal neurons. Our results suggested that the interaction of APP with NCAM played an important role in AD development and therefore could be a potential therapeutic target for AD treatment.
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Affiliation(s)
- Keping Chen
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
| | - Huixia Lu
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
| | - Tianli Gao
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
| | - Xiulei Xue
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
| | - Chunling Wang
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
| | - Fengqin Miao
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Institute of Life Science, Southeast University, Nanjing 210009, China
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14
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Qian W, Gang X, Zhang T, Wei L, Yang X, Li Z, Yang Y, Song L, Wang P, Peng J, Cheng D, Xia Q. Protein kinase A-mediated phosphorylation of the Broad-Complex transcription factor in silkworm suppresses its transcriptional activity. J Biol Chem 2017; 292:12460-12470. [PMID: 28584058 PMCID: PMC5535021 DOI: 10.1074/jbc.m117.775130] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 06/02/2017] [Indexed: 12/28/2022] Open
Abstract
The insect-specific transcription factor Broad-Complex (BR-C) is transcriptionally activated by the steroid 20-hydroxyecdysone (20E) and regulates the expression of many target genes involved in insect growth and development. However, although the transcriptional regulation of BR-C proteins has been well studied, how BR-C is regulated at post-transcription and -translation levels is poorly understood. To this end, using liquid chromatography-tandem mass spectrometry analysis, we identified residue Ser-186 as a phosphorylation site of BR-C in silkworm. Site-directed mutagenesis and treatment with specific kinase activators and inhibitors indicated that the Ser-186 residue in silkworm BR-C is phosphorylated by protein kinase A (PKA). Immunostaining assays disclosed that PKA-mediated phosphorylation of silkworm BR-C has no effect on its nuclear import. However, luciferase reporter analysis, electrophoretic mobility shift assays, and chromatin immunoprecipitation revealed that the PKA phosphorylation event suppresses the transcriptional activation of silkworm BR-C target genes and that this inhibition was caused by repression of BR-C binding to its DNA targets. Of note, both in vitro and ex vivo experiments disclosed that a continuous 20E signal inhibits the PKA-mediated BR-C phosphorylation and also the cAMP/PKA pathway, indicating that 20E's inhibitory effect on PKA-mediated phosphorylation of silkworm BR-C contributes to maintaining BR-C transcriptional activity. In conclusion, our findings indicate that PKA-mediated phosphorylation inhibits silkworm BR-C activity by interfering with its binding to DNA and that 20E signaling relieves PKA-mediated phosphorylation of BR-C, thereby maintaining its transcriptional activity.
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Affiliation(s)
- Wenliang Qian
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Xiaoxu Gang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Tianlei Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Ling Wei
- School of Life Science, Southwest University, Chongqing 400715, China
| | - Xinxin Yang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Zheng Li
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Yan Yang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Liang Song
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Peng Wang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Jian Peng
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Daojun Cheng
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
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15
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Qian W, Gang X, Zhang T, Wei L, Yang X, Li Z, Yang Y, Song L, Wang P, Peng J, Cheng D, Xia Q. Protein kinase A-mediated phosphorylation of the Broad-Complex transcription factor in silkworm suppresses its transcriptional activity. J Biol Chem 2017. [DOI: 10.1.74/jbc.m117.77513010.1074/jbc.m117.775130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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16
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Hu Y, Zhan Q, Zhang H, Liu X, Huang L, Li H, Yuan Q. Increased Susceptibility to Ischemic Brain Injury in Neuroplastin 65-Deficient Mice Likely via Glutamate Excitotoxicity. Front Cell Neurosci 2017; 11:110. [PMID: 28469561 PMCID: PMC5395575 DOI: 10.3389/fncel.2017.00110] [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: 12/29/2016] [Accepted: 03/31/2017] [Indexed: 12/27/2022] Open
Abstract
Cell adhesion molecules (CAMs) are involved in synaptic plasticity and neuronal survival in the adult brain. Neuroplastin 65 (Np65), one member of the immunoglobulin superfamily of CAMs, is brain-specific and highly expressed in rodent forebrain. The roles of Np65 in synaptic plasticity have been confirmed, however, whether Np65 affects neuronal survival remains unknown. To address this gap, we generated, to our knowledge, the first Np65 knockout (KO) mice. By occluding middle cerebral artery to perform ischemic stroke model, we showed that Np65 KO mice exhibited more severe neurological deficits and larger infarction volume measured by TTC staining and more apoptotic cells confirmed by TUNEL staining compared to wild type (WT) mice. Besides, western blot analysis showed that the vesicular glutamate transporter-1(VGluT1), and N-Methyl D-Aspartate receptors, including NR1, NR2A, and NR2B were significantly increased in Np65 KO mice compared with WT mice. In contrast, vesicular gamma amino butyric acid transporter (VGAT) levels were unchanged in two genotypes after stroke. Additionally, phosphorylated-extracellular signal-regulated kinase 1/2 levels were significantly increased in Np65 KO mice compared with WT mice after stroke. Together, these results suggest that Np65 KO mice may be more susceptible to ischemic events in the brain.
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Affiliation(s)
- Yuhui Hu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of MedicineShanghai, China.,Department of Anatomy, Jinggansan University School of MedicineJian, China
| | - Qin Zhan
- Department of Neurology, Seventh People's Hospital of Shanghai University of Traditional Chinese MedicineShanghai, China
| | - Haibo Zhang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of MedicineShanghai, China
| | - Xiaoqing Liu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of MedicineShanghai, China
| | - Liang Huang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of MedicineShanghai, China
| | - Huanhuan Li
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of MedicineShanghai, China
| | - Qionglan Yuan
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of MedicineShanghai, China
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17
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Rosso P, De Nicolò S, Carito V, Fiore M, Iannitelli A, Moreno S, Tirassa P. Ocular Nerve Growth Factor Administration Modulates Brain-derived Neurotrophic Factor Signaling in Prefrontal Cortex of Healthy and Diabetic Rats. CNS Neurosci Ther 2017; 23:198-208. [PMID: 28044424 DOI: 10.1111/cns.12661] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 01/24/2023] Open
Abstract
AIMS Nerve growth factor (NGF) eyedrops (ed-NGF) activate brain neurons, stimulate growth factors, including brain-derived neurotrophic factor (BDNF), and exert neuroprotection in the forebrain of streptozotocin-induced diabetic rats (STZ rats). In this study, the effects of ed-NGF on BDNF signaling in the prefrontal cortex (PFC) were explored in healthy and STZ-diabetic rats, in which cortical neuronal and axonal loss, and altered circulating BDNF associated with depressive phenotype are also described. METHODS STZ and healthy (CTR) adult rats received ed-NGF twice a day for 2 weeks. Depressive phenotype was identified by force swimming test (FST). Proteins extracted from PFC were processed for ELISA and Western blot analyses to measure the expression of BDNF, proBDNF, and their receptors and intracellular signals. RESULTS ed-NGF treatment modulates BDNF pathway in PFC and normalizes the STZ-induced BDNF alterations by stimulating TRK-mediated survival mechanism. A decreased latency in FST was also found in STZ rats, while no change was observed comparing CTR + NGF and STZ + NGF with CTR. CONCLUSION The present data confirm the capacity of ed-NGF treatment to affect brain neurons and lead to brain damage recovery by activating protective and remodeling pathways triggered by BDNF. We suggest that the ed-NGF-induced changes in BDNF signaling might influence the manifestation of depressive phenotype in diabetic rats.
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Affiliation(s)
- Pamela Rosso
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy.,Department of Science, LIME, University Roma Tre, Rome, Italy
| | - Sara De Nicolò
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy
| | - Valentina Carito
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy
| | - Marco Fiore
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy
| | - Angela Iannitelli
- Department of Medical-Surgical Sciences and Biotechnologies, Faculty of Pharmacy and Medicine, "Sapienza" University of Rome, Rome, Italy
| | - Sandra Moreno
- Department of Science, LIME, University Roma Tre, Rome, Italy
| | - Paola Tirassa
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy
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18
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Bokara KK, Kim JH, Kim JY, Lee JE. Transfection of arginine decarboxylase gene increases the neuronal differentiation of neural progenitor cells. Stem Cell Res 2016; 17:256-265. [PMID: 27591482 DOI: 10.1016/j.scr.2016.08.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 07/26/2016] [Accepted: 08/16/2016] [Indexed: 10/21/2022] Open
Abstract
Growing evidence suggests that the clinical use of neural progenitor cells (NPCs) is hampered by heterogeneity, poor neuronal yield and low survival rate. Recently, we reported that retrovirus-delivered human arginine decarboxylase (hADC) genes improve cell survival against oxidative insult in murine NPCs in vitro. This study investigates whether the induced expression of hADC gene in mNPCs induces any significant change in the cell fate commitment. The evaluation of induced hADC gene function was assessed by knockdown of hADC gene using specific siRNA. The hADC gene delivery triggered higher expression of N-CAM, cell adhesion molecule and MAP-2, neuronal marker. However, the hADC gene knockdown showed downregulation of N-CAM and MAP-2 expression suggesting that hADC gene delivery favors cell fate commitment of mNPCs towards neuronal lineage. Neurite outgrowth was significantly longer in the hADC infected cells. The neurotrophic signal, BDNF aided in the neuronal commitment, differentiation, and maturation of hADC-mNPCs through PI3K and ERK1/2 activation. The induction of neuron-like differentiation is believed to be regulated by the expression of GSK-3β and Wnt/β-catenin signaling pathways. Our findings suggest that hADC gene delivery favors cell fate commitment of mNPCs towards neuronal lineage, bring new advances in the field of neurogenesis and cell therapy.
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Affiliation(s)
- Kiran Kumar Bokara
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; CSIR-Centre for Cellular and Molecular Biology, Medical Biotechnology Complex, ANNEXE II, Uppal Road, Uppal, Hyderabad 500007, India.
| | - Jae Hwan Kim
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon, 16419, Republic of Korea; Department of Biomedical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.
| | - Jae Young Kim
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
| | - Jong Eun Lee
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; BK 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
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19
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Takase N, Koma YI, Urakawa N, Nishio M, Arai N, Akiyama H, Shigeoka M, Kakeji Y, Yokozaki H. NCAM- and FGF-2-mediated FGFR1 signaling in the tumor microenvironment of esophageal cancer regulates the survival and migration of tumor-associated macrophages and cancer cells. Cancer Lett 2016; 380:47-58. [PMID: 27317650 DOI: 10.1016/j.canlet.2016.06.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 06/01/2016] [Accepted: 06/09/2016] [Indexed: 12/30/2022]
Abstract
Tumor-associated macrophages (TAMs) have important roles in the angiogenesis and tumor immunosuppression of various cancers, including esophageal squamous cell carcinomas (ESCCs). To elucidate the roles of TAMs in ESCCs, we compared the gene expression profiles between human peripheral blood monocyte-derived macrophage-like cells (Macrophage_Ls) and Macrophage_Ls stimulated with conditioned medium of the TE series human ESCC cell line (TECM) (TAM_Ls) using cDNA microarray analysis. Among the highly expressed genes in TAM_Ls, we focused on neural cell adhesion molecule (NCAM). NCAM knockdown in TAM_Ls revealed a significant decrease of migration and survival via a suppression of PI3K-Akt and fibroblast growth factor receptor 1 (FGFR1) signaling. Stimulation by TECM up-regulated the level of FGFR1 in Macrophage_Ls. Recombinant human fibroblast growth factor-2 (rhFGF-2) promoted the migration and survival of TAM_Ls and TE-cells through FGFR1 signaling. Our immunohistochemical analysis of 70 surgically resected ESCC samples revealed that the up-regulated FGF-2 in stromal cells, including macrophages, was associated with more aggressive phenotypes and a high number of infiltrating M2 macrophages. These findings may indicate a novel role of NCAM- and FGF-2-mediated FGFR1 signaling in the tumor microenvironment of ESCCs.
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Affiliation(s)
- Nobuhisa Takase
- Division of Pathology, Department of Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; Division of Gastro-intestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Yu-Ichiro Koma
- Division of Pathology, Department of Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Naoki Urakawa
- Division of Pathology, Department of Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; Division of Gastro-intestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Mari Nishio
- Division of Pathology, Department of Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Noriaki Arai
- Division of Pathology, Department of Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Hiroaki Akiyama
- Division of Pathology, Department of Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Manabu Shigeoka
- Division of Pathology, Department of Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Yoshihiro Kakeji
- Division of Gastro-intestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Hiroshi Yokozaki
- Division of Pathology, Department of Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
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20
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NCAM-140 Translocation into Lipid Rafts Mediates the Neuroprotective Effects of GDNF. Mol Neurobiol 2016; 54:2739-2751. [PMID: 27003822 DOI: 10.1007/s12035-016-9749-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 01/26/2016] [Indexed: 10/22/2022]
Abstract
Glial cell line-derived neurotrophic factor (GDNF) is a potent neurotrophic factor for substantia nigra dopaminergic (DA) neuronal cells. Recent studies have demonstrated that neural cell adhesion molecule functions as a signal transduction receptor for GDNF. The purpose of this study is to reveal whether neural cell adhesion molecule (NCAM) mediates the protective effects of GDNF on DA neuronal cells and further explore the mechanisms involved. We utilized SH-SY5Y cell line to establish a model of 6-hydroxydopamine (6-OHDA)-injured DA neuronal cells. Lentiviral vectors were constructed to knockdown or overexpress NCAM-140, and a density gradient centrifugation method was employed to separate membrane lipid rafts. 3-(4,5-Dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT), flow cytometric analysis, and western blotting were used to evaluate the protective effects of GDNF. The results showed that GDNF could protect 6-OHDA-injured SH-SY5Y cells via improving cell viability and decreasing the cell death rate and cleaved caspase-3 expression. NCAM-140 knockdown decreased cell viability and increased the cell death rate and cleaved caspase-3 expression, while its overexpression had the opposite effects. Notably, the amount of NCAM-140 located in lipid rafts increased after GDNF treatment. Pretreatment with 2-bromopalmitate, a specific inhibitor of protein palmitoylation, suppressed NCAM-140 translocation to lipid rafts and reduced the NCAM-mediated protective effects of GDNF on injured DA neuronal cells. Our results suggest that GDNF have the protective effects on injured DA cells by influencing NCAM-140 translocation into lipid rafts.
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21
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Loers G, Saini V, Mishra B, Gul S, Chaudhury S, Wallqvist A, Kaur G, Schachner M. Vinorelbine and epirubicin share common features with polysialic acid and modulate neuronal and glial functions. J Neurochem 2016; 136:48-62. [PMID: 26443186 PMCID: PMC4904230 DOI: 10.1111/jnc.13383] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/21/2015] [Accepted: 10/02/2015] [Indexed: 02/05/2023]
Abstract
Polysialic acid (PSA), a large, linear glycan composed of 8 to over 100 α2,8-linked sialic acid residues, modulates development of the nervous system by enhancing cell migration, axon pathfinding, and synaptic targeting and by regulating differentiation of progenitor cells. PSA also functions in developing and adult immune systems and is a signature of many cancers. In this study we identified vinorelbine, a semi-synthetic third generation vinca alkaloid, and epirubicin, an anthracycline and 4'-epimer of doxorubicin, as PSA mimetics. Similar to PSA, vinorelbine and epirubicin bind to the PSA-specific monoclonal antibody 735 and compete with the bacterial analog of PSA, colominic acid in binding to monoclonal antibody 735. Vinorelbine and epirubicin stimulate neurite outgrowth of cerebellar neurons via the neural cell adhesion molecule, via myristoylated alanine-rich C kinase substrate, and via fibroblast growth factor receptor, signaling through Erk pathways. Furthermore, the two compounds enhance process formation of Schwann cells and migration of cerebellar neurons in culture, and reduce migration of astrocytes after injury. These novel results show that the structure and function of PSA can be mimicked by the small organic compounds vinorelbine and epirubicin, thus raising the possibility to re-target drugs used in treatment of cancers to nervous system repair. Vinorelbine and epirubicin, identified as PSA mimetics, enhance, like PSA, neuronal migration, neuritogenesis, and formation of Schwann cell processes, and reduce astrocytic migration. Ablating NCAM, inhibiting fibroblast growth factor (FGFR) receptor, or adding the effector domain of myristoylated alanine-rich C kinase substrate (MARCKS) minimize the vinorelbine and epirubicin effects, indicating that they are true PSA mimetics triggering PSA-mediated functions.
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Affiliation(s)
- Gabriele Loers
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, Falkenried 94, D-20251 Hamburg, Germany
| | - Vedangana Saini
- Department of Biotechnology, Guru Nanak Dev University, GT Road, 143005 Amritsar, India
| | - Bibhudatta Mishra
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, Falkenried 94, D-20251 Hamburg, Germany
| | - Sheraz Gul
- Fraunhofer Institute for Molecular Biology and Applied Ecology ScreeningPort (Fraunhofer-IME SP), Schnackenburgalle114, D-22525 Hamburg, Germany
| | - Sidhartha Chaudhury
- DoD Biotechnology High Performance Computing Software Applications Institute, Telemedicine and Advanced Technology Research Center, US Army Medical Research and Materiel Command, Fort Detrick, MD 21702 (USA)
| | - Anders Wallqvist
- DoD Biotechnology High Performance Computing Software Applications Institute, Telemedicine and Advanced Technology Research Center, US Army Medical Research and Materiel Command, Fort Detrick, MD 21702 (USA)
| | - Gurcharan Kaur
- Department of Biotechnology, Guru Nanak Dev University, GT Road, 143005 Amritsar, India
| | - Melitta Schachner
- Zentrum für Molekulare Neurobiologie Hamburg, Universitätsklinikum Hamburg-Eppendorf, Falkenried 94, D-20251 Hamburg, Germany
- Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, 604 Allison Road, Piscataway, NJ 08854, USA
- Center for Neuroscience, Shantou University Medical College, 22 Xin Ling Road, Shantou, Guangdong 515041, China
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22
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PI TING, ZHOU XIAOWEN, CAI LIANG, ZHANG WEI, SU CHAOFEN, WU WUTIAN, REN XIAOMING, LUO HUANMIN. PI3K/Akt signaling pathway is involved in the neurotrophic effect of senegenin. Mol Med Rep 2015; 13:1257-62. [DOI: 10.3892/mmr.2015.4652] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 09/18/2015] [Indexed: 11/05/2022] Open
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23
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Effect of itraconazole on mouse mesencephalic neurons. Int J Dev Neurosci 2015; 44:75-83. [DOI: 10.1016/j.ijdevneu.2015.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 05/13/2015] [Accepted: 06/06/2015] [Indexed: 01/14/2023] Open
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24
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Day JS, O'Neill E, Cawley C, Aretz NK, Kilroy D, Gibney SM, Harkin A, Connor TJ. Noradrenaline acting on astrocytic β2-adrenoceptors induces neurite outgrowth in primary cortical neurons. Neuropharmacology 2014; 77:234-48. [DOI: 10.1016/j.neuropharm.2013.09.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 09/17/2013] [Accepted: 09/30/2013] [Indexed: 12/23/2022]
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25
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Nagao K, Sowa N, Inoue K, Tokunaga M, Fukuchi K, Uchiyama K, Ito H, Hayashi F, Makita T, Inada T, Tanaka M, Kimura T, Ono K. Myocardial expression level of neural cell adhesion molecule correlates with reduced left ventricular function in human cardiomyopathy. Circ Heart Fail 2013; 7:351-8. [PMID: 24365773 DOI: 10.1161/circheartfailure.113.000939] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Recently, we screened for cardiac genes induced by metabolic stress and identified neural cell adhesion molecule (NCAM) as a candidate. This study aimed to clarify the expression pattern of NCAM in human cardiomyopathy. METHODS AND RESULTS A total of 64 cardiac tissue samples of patients with dilated cardiomyopathy were dichotomized according to the immunohistochemically determined signal intensity of NCAM staining (NCAM-high and NCAM-low groups). Clinical and hemodynamic data of the patients were compared between the 2 groups. Fibrosis area, left ventricular end-diastolic volume index, and left ventricular diastolic pressure were greater in the NCAM-high group (22.8% versus 11.6%, P<0.05; 130.3±57.6 versus 104.8±31.7 mL/m(2), P<0.05; 14.3±8.0 versus 8.8±4.7 mm Hg, P<0.005; respectively). Incidence of cardiac death and admission for worsening heart failure was higher in the NCAM-high group during a follow-up of 6.3 years (log-rank P<0.05). Another 18 tissue samples were analyzed to determine the relationships between expression level of NCAM and major metabolic genes as well as hemodynamic parameters. The mRNA level of NCAM correlated with the serum (r=0.58; P=0.01) and mRNA levels (r=0.61; P=0.008) of brain-derived natriuretic peptides. It was also correlated with the mRNA levels of proliferator-activated receptor-γ coactivator-1 α (r=0.69; P=0.002) and the nuclear respiratory factor 1 (r=0.74; P<0.001). CONCLUSIONS Expression of NCAM was associated with worsening hemodynamic parameters and major metabolic genes. Together with our previous findings, these data support the involvement of NCAM in left ventricular remodeling, revealing new insights into the pathophysiology of heart failure.
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Affiliation(s)
- Kazuya Nagao
- Department of Cardiovascular Center, Osaka Red Cross Hospital, Osaka, Japan
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26
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Al-Saraireh YMJ, Sutherland M, Springett BR, Freiberger F, Ribeiro Morais G, Loadman PM, Errington RJ, Smith PJ, Fukuda M, Gerardy-Schahn R, Patterson LH, Shnyder SD, Falconer RA. Pharmacological inhibition of polysialyltransferase ST8SiaII modulates tumour cell migration. PLoS One 2013; 8:e73366. [PMID: 23951351 PMCID: PMC3739731 DOI: 10.1371/journal.pone.0073366] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 07/18/2013] [Indexed: 11/19/2022] Open
Abstract
Polysialic acid (polySia), an α-2,8-glycosidically linked polymer of sialic acid, is a developmentally regulated post-translational modification predominantly found on NCAM (neuronal cell adhesion molecule). Whilst high levels are expressed during development, peripheral adult organs do not express polySia-NCAM. However, tumours of neural crest-origin re-express polySia-NCAM: its occurrence correlates with aggressive and invasive disease and poor clinical prognosis in different cancer types, notably including small cell lung cancer (SCLC), pancreatic cancer and neuroblastoma. In neuronal development, polySia-NCAM biosynthesis is catalysed by two polysialyltransferases, ST8SiaII and ST8SiaIV, but it is ST8SiaII that is the prominent enzyme in tumours. The aim of this study was to determine the effect of ST8SiaII inhibition by a small molecule on tumour cell migration, utilising cytidine monophosphate (CMP) as a tool compound. Using immunoblotting we showed that CMP reduced ST8iaII-mediated polysialylation of NCAM. Utilizing a novel HPLC-based assay to quantify polysialylation of a fluorescent acceptor (DMB-DP3), we demonstrated that CMP is a competitive inhibitor of ST8SiaII (K i = 10 µM). Importantly, we have shown that CMP causes a concentration-dependent reduction in tumour cell-surface polySia expression, with an absence of toxicity. When ST8SiaII-expressing tumour cells (SH-SY5Y and C6-STX) were evaluated in 2D cell migration assays, ST8SiaII inhibition led to significant reductions in migration, while CMP had no effect on cells not expressing ST8SiaII (DLD-1 and C6-WT). The study demonstrates for the first time that a polysialyltransferase inhibitor can modulate migration in ST8SiaII-expressing tumour cells. We conclude that ST8SiaII can be considered a druggable target with the potential for interfering with a critical mechanism in tumour cell dissemination in metastatic cancers.
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Affiliation(s)
- Yousef M. J. Al-Saraireh
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford, United Kingdom
| | - Mark Sutherland
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford, United Kingdom
| | - Bradley R. Springett
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford, United Kingdom
| | | | - Goreti Ribeiro Morais
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford, United Kingdom
| | - Paul M. Loadman
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford, United Kingdom
| | - Rachel J. Errington
- Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Paul J. Smith
- Institute of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Minoru Fukuda
- Glycobiology Unit, Cancer Center, Sanford-Burnham Medical Research Institute, La Jolla, California, United States of America
| | - Rita Gerardy-Schahn
- Institute for Cellular Chemistry, Hannover Medical School, Hannover, Germany
| | - Laurence H. Patterson
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford, United Kingdom
| | - Steven D. Shnyder
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford, United Kingdom
| | - Robert A. Falconer
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford, United Kingdom
- * E-mail:
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Wang M, Fu H, Xiao Y, Ai B, Wei Q, Wang S, Liu T, Ye L, Hu Q. Effects of low-level organic selenium on lead-induced alterations in neural cell adhesion molecules. Brain Res 2013; 1530:76-81. [PMID: 23892105 DOI: 10.1016/j.brainres.2013.07.028] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2013] [Revised: 07/12/2013] [Accepted: 07/17/2013] [Indexed: 01/18/2023]
Abstract
Low-level lead (Pb) exposure has been reported to impair the formation and consolidation of learning and memory by inhibiting the expression of neural cell adhesion molecules (NCAMs) and altering the temporal profile of its polysialylation state. In this study, we investigated whether administration of low-level organic selenium (selenomethionine, Se) at different time points could affect Pb-induced changes of NCAMs in female Wistar rats. Here we reported that the exposure of Se (60μg/kg body weight/day) at different time points significantly alleviated Pb-induced reductions in the mRNA and protein levels of NCAMs, and increases in the mRNA levels of two polysialyltransferases (St8sia II, Stx; St8sia IV, Pst) as well as the sialyltransferase activity (p<0.05). The concentrations of Pb in blood and hippocampi of Wistar rats treated with the combination of Se and Pb were significantly lower than those treated with Pb alone (p<0.05). Our results suggest that low-level organic Se can not only prevent but also reverse Pb-induced alterations in the expression and polysialylated state of NCAMs as well as the concentration of Pb in rat blood and hippocampus.
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Affiliation(s)
- Mao Wang
- Department of Preventive Medicine, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
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28
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Tur MK, Etschmann B, Benz A, Leich E, Waller C, Schuh K, Rosenwald A, Ertl G, Kienitz A, Haaf AT, Bräuninger A, Gattenlöhner S. The 140-kD isoform of CD56 (NCAM1) directs the molecular pathogenesis of ischemic cardiomyopathy. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 182:1205-18. [PMID: 23462508 DOI: 10.1016/j.ajpath.2012.12.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 11/10/2012] [Accepted: 12/17/2012] [Indexed: 02/01/2023]
Abstract
Despite recent advances in understanding the relevance of cell adhesion-related signaling in the pathogenesis of ischemic cardiomyopathy (ICM) in animal models, substantial questions remain unanswered in the human setting. We have previously shown that the neural cell adhesion molecule CD56 [neural cell adhesion molecule (NCAM1)] is specifically overexpressed in ICM; it was the aim of the current study to further elucidate the role of CD56 in the pathogenesis of human ICM. We used quantitative real-time PCR and IHC in human ICM and a rat model of coronary obstruction to demonstrate that CD56(140kD), the only extraneuronally expressed NCAM1 isoform with a cytoplasmic protein domain capable of inducing intracellular signaling, is the only up-regulated CD56 isoform in failing cardiomyocytes in human ICM in vivo. In subsequent analyses of the cellular effects of CD56(140kD) overexpression in the development of ICM using differential whole transcriptome expression analyses and functional in vitro cardiomyocyte cell culture assays, we further show that the up-regulation of CD56(140kD) is associated with profound gene expression changes, increased apoptosis, and reduced Ca(2+) signaling in failing human cardiomyocytes. Because apoptosis and Ca(2+)-related sarcomeric dysfunction are molecular hallmarks of ICM in humans, our results provide strong evidence that CD56(140kD) up-regulation plays a pivotal role in the pathogenesis of ICM and may be a target for future immunotherapeutic strategies in the treatment of this common and often fatal disease.
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Affiliation(s)
- Mehmet Kemal Tur
- Institute of Pathology, University of Giessen, D-35392 Giessen, Germany
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29
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Low-dose zoledronic acid reduces spinal cord metastasis in pulmonary adenocarcinoma with neuroendocrine differentiation. Anticancer Drugs 2013; 23:970-8. [PMID: 22713592 DOI: 10.1097/cad.0b013e328355f0ec] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Zoledronic acid (ZOL), a nitrogen-containing compound, is effective in the treatment of skeletal disorders, but its long-term use in high doses gives rise to complications such as osteonecrosis. We aimed to investigate the effect of low-dose ZOL on the expression of the neural cell adhesion molecule (NCAM), which may be correlated with tumor growth and spinal cord metastasis in lung adenocarcinoma with neuroendocrine differentiation. First, we used the small hairpin RNA technique to directly knock down NCAM expression in cells of a murine lung adenocarcinoma line, line 1 cells, and found that the tumor cells generated showed lower invasive capacity, slower tumor growth, and lesser tendency for spinal cord metastasis than control cells. Further, ZOL decreased NCAM expression and invasiveness in line 1 tumor cells in vitro. Line 1/lacZ cells, a stable clone tagged with the lacZ gene, were introduced into mice, followed by ZOL treatment (1 μg/kg/weekly). Low-dose ZOL significantly reduced spinal cord metastasis probably through reduced NCAM expression in vivo. These findings indicated that NCAM is involved in tumor growth and spinal cord metastasis of lung adenocarcinoma with neuroendocrine differentiation. Treatment with low-dose ZOL can reduce NCAM expression that may contribute toward reduced spinal cord metastasis, suggesting that NCAM is an alternative therapeutic target and that the low-dose ZOL treatment protocol is a reasonable approach for its treatment.
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Park N, Yoo JC, Ryu J, Hong SG, Hwang EM, Park JY. Copine1 enhances neuronal differentiation of the hippocampal progenitor HiB5 cells. Mol Cells 2012; 34:549-54. [PMID: 23263657 PMCID: PMC3887833 DOI: 10.1007/s10059-012-0235-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 10/24/2012] [Accepted: 10/24/2012] [Indexed: 11/24/2022] Open
Abstract
Copine1 is a ubiquitously expressed protein found in various tissues including the brain, but little is known about the physiological function of this protein. Here, we showed that copine1 is involved in neuronal differentiation. Over-expression of copine1 clearly increased neurite outgrowth and expression of Tuj1, a neuronal marker protein, in HiB5 cells. In addition, endogenous copine1 was transiently increased at the early time during neuronal differentiation of HiB5 cells. When the expression of endogenous copine1 was knocked-down by its specific shRNA, PDGF-mediated neurite outgrowth was clearly decreased in HiB5 cells. Furthermore, over-expression of copine1 increased phosphorylation of Akt and copine1-specific shRNA decreased phosphorylation of Akt during neuronal differentiation of HiB5 cells. Interestingly, the phosphorylation level of PI3K, generally known as an upstream protein of Akt, was not changed by copine1 expression. These results suggest that copine1 enhances neuronal differentiation of HiB5 cells not through the PI3K-Akt pathway, but by using another Akt activated signal pathway.
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Affiliation(s)
- Nammi Park
- Department of Physiology, Institute of Health Science, and Medical Research Center for Neural Dysfunction, School of Medicine, Gyeongsang National University, Jinju 660-751,
Korea
| | - Jae Cheal Yoo
- Department of Physiology, Institute of Health Science, and Medical Research Center for Neural Dysfunction, School of Medicine, Gyeongsang National University, Jinju 660-751,
Korea
| | - Jiwon Ryu
- Department of Physiology, Institute of Health Science, and Medical Research Center for Neural Dysfunction, School of Medicine, Gyeongsang National University, Jinju 660-751,
Korea
| | - Seong-Geun Hong
- Department of Physiology, Institute of Health Science, and Medical Research Center for Neural Dysfunction, School of Medicine, Gyeongsang National University, Jinju 660-751,
Korea
| | - Eun Mi Hwang
- Center for Neural Science and WCI Center for Functional Connectomics, Korea Institute of Science and Technology, Seoul 136-791,
Korea
| | - Jae-Yong Park
- Department of Physiology, Institute of Health Science, and Medical Research Center for Neural Dysfunction, School of Medicine, Gyeongsang National University, Jinju 660-751,
Korea
- Center for Neural Science and WCI Center for Functional Connectomics, Korea Institute of Science and Technology, Seoul 136-791,
Korea
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31
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Neural cell adhesion molecules in brain plasticity and disease. Mult Scler Relat Disord 2012; 2:13-20. [PMID: 25877450 DOI: 10.1016/j.msard.2012.08.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 08/03/2012] [Accepted: 08/13/2012] [Indexed: 12/14/2022]
Abstract
Neural cell adhesion molecule (NCAM) has been studied extensively. But it is only in recent times that interest in this molecule has shifted to conditions such as Alzheimer's disease, Multiple Sclerosis and Schizophrenia, focusing on its role in neurodegeneration and abnormal neurodevelopment. NCAM is important in neurite outgrowth, long-term potentiation in the hippocampus and synaptic plasticity. Reduced as well as increased levels in NCAM have been linked to pathology in the brain suggesting that a shift in the equilibrium may be the key. Hence, increasing our understanding of the role of NCAM in health and disease should clear some of the ambiguity surrounding the molecule and even lead to newer potential therapeutic targets. This review consolidates our current understanding of NCAM, focusing on the consequences of dysregulation, its role in neurodegenerative and neurodevelopmental disorders, and the future of NCAM plus potential options for therapy.
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32
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Neuroprotective and memory enhancing properties of a dual agonist of the FGF receptor and NCAM. Neurobiol Dis 2012; 48:533-45. [PMID: 22842016 DOI: 10.1016/j.nbd.2012.07.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 05/31/2012] [Accepted: 07/17/2012] [Indexed: 12/20/2022] Open
Abstract
The fibroblast growth factor receptor (FGFR) plays a vital role in the development of the nervous system regulating a multitude of cellular processes. One of the interaction partners of the FGFR is the neural cell adhesion molecule (NCAM), which is known to play an important role in neuronal development, regeneration and synaptic plasticity. Thus, simultaneous activation of FGFR- and NCAM-mediated signaling pathways may be expected to affect processes underlying neurodegenerative diseases. We here report the identification of a peptide compound, Enreptin, capable of interacting with both FGFR and NCAM. We demonstrate that this dual specificity agonist induces phosphorylation of FGFR and differentiation and survival of primary neurons in vitro, and that these effects are inhibited by abrogation of both NCAM and FGFR signaling pathways. Furthermore, Enreptin crosses the blood-brain barrier after subcutaneous administration, enhances long-term memory in normal mice and ameliorates memory deficit in mice with induced brain inflammation. Moreover, Enreptin reduces cognitive impairment and neuronal death induced by Aβ25-35 in a rat model of Alzheimer's disease, and reduces the mortality rate and clinical signs of experimental autoimmune encephalomyelitis in rats. Thus, Enreptin is an attractive candidate for the treatment of neurological diseases.
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Shi Y, Xia YY, Wang L, Liu R, Khoo KS, Feng ZW. Neural cell adhesion molecule modulates mesenchymal stromal cell migration via activation of MAPK/ERK signaling. Exp Cell Res 2012; 318:2257-67. [PMID: 22683856 DOI: 10.1016/j.yexcr.2012.05.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Revised: 05/25/2012] [Accepted: 05/28/2012] [Indexed: 12/18/2022]
Abstract
Mesenchymal Stromal Cells (MSCs) represent promising tools for cellular therapy owing to their multipotentiality and ability to localize to injured, inflamed sites and tumor. Various approaches to manipulate expression of MSC surface markers, including adhesion molecules and chemokine receptors, have been explored to enhance homing of MSCs. Recently, Neural Cell Adhesion Molecule (NCAM) has been found to be expressed on MSCs yet its function remains largely elusive. Herein, we show that bone marrow-derived MSCs from NCAM deficient mice exhibit defective migratory ability and significantly impaired adipogenic and osteogenic differentiation potential. We further explore the mechanism governing NCAM mediated migration of MSCs by showing the interplay between NCAM and Fibroblast Growth Factor Receptor (FGFR) induces activation of MAPK/ERK signaling, thereby the migration of MSCs. In addition, re-expression of NCAM180, but not NCAM140, could restore the defective MAPK/ERK signaling thereby the migration of NCAM deficient MSCs. Finally, we demonstrate that NCAM180 expression level could be manipulated by pro-inflammatory cytokine Tumor Necrosis Factor (TNF)-α treatment. Overall, our data reveal the vital function of NCAM in MSCs migration and differentiation thus raising the possibility of manipulating NCAM expression to enhance homing and therapeutic potential of MSCs in cellular therapy.
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Affiliation(s)
- Yu Shi
- School of Biological Sciences, Nanyang Technological University, #60 Nanyang Drive, Singapore 637551, Singapore
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34
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Kataria H, Wadhwa R, Kaul SC, Kaur G. Water extract from the leaves of Withania somnifera protect RA differentiated C6 and IMR-32 cells against glutamate-induced excitotoxicity. PLoS One 2012; 7:e37080. [PMID: 22606332 PMCID: PMC3351387 DOI: 10.1371/journal.pone.0037080] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 04/13/2012] [Indexed: 01/09/2023] Open
Abstract
Glutamate neurotoxicity has been implicated in stroke, head trauma, multiple sclerosis and neurodegenerative disorders. Search for herbal remedies that may possibly act as therapeutic agents is an active area of research to combat these diseases. The present study was designed to investigate the neuroprotective role of Withania somnifera (Ashwagandha), also known as Indian ginseng, against glutamate induced toxicity in the retinoic acid differentiated rat glioma (C6) and human neuroblastoma (IMR-32) cells. The neuroprotective activity of the Ashwagandha leaves derived water extract (ASH-WEX) was evaluated. Cell viability and the expression of glial and neuronal cell differentiation markers was examined in glutamate challenged differentiated cells with and without the presence of ASH-WEX. We demonstrate that RA-differentiated C6 and IMR-32 cells, when exposed to glutamate, undergo loss of neural network and cell death that was accompanied by increase in the stress protein HSP70. ASH-WEX pre-treatment inhibited glutamate-induced cell death and was able to revert glutamate-induced changes in HSP70 to a large extent. Furthermore, the analysis on the neuronal plasticity marker NCAM (Neural cell adhesion molecule) and its polysialylated form, PSA-NCAM revealed that ASH-WEX has therapeutic potential for prevention of neurodegeneration associated with glutamate-induced excitotoxicty.
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Affiliation(s)
- Hardeep Kataria
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, India
| | - Renu Wadhwa
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
- * E-mail: (GK) (RW); (RW) (GK)
| | - Sunil C. Kaul
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Gurcharan Kaur
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, India
- * E-mail: (GK) (RW); (RW) (GK)
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Skaper SD. Neuronal growth-promoting and inhibitory cues in neuroprotection and neuroregeneration. Methods Mol Biol 2012; 846:13-22. [PMID: 22367797 DOI: 10.1007/978-1-61779-536-7_2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
During development of the nervous system, neurons extend axons over considerable distances in a highly stereospecific fashion in order to innervate their targets in an appropriate manner. This involves the recognition, by the axonal growth cone, of guidance cues that determine the pathway taken by the axons. These guidance cues can act to promote and/or repel growth cone advance. The directed growth of axons is partly governed by cell adhesion molecules (CAMs) on the neuronal growth cone that bind to CAMs on the surface of other axons or nonneuronal cells. In vitro assays have established the importance of the CAMs ((neural cell adhesion molecule NCAM), N-cadherin, and L1) in promoting axonal growth over cells. Compelling evidence implicates the fibroblast growth factor receptor tyrosine kinase as the primary signal transduction molecule in the CAM pathway. CAMs are important constituents of synapses, and they appear to play important and diverse roles in regulating synaptic plasticity associated with learning and memory. Synthetic NCAM peptide mimetics corresponding to the binding site of NCAM for the fibroblast growth factor receptor promote synaptogenesis, enhance presynaptic function, and facilitate memory consolidation. Dimeric versions of functional binding motifs of N-cadherin behave as N-cadherin agonists, promoting both neuritogenesis and neuronal cell survival. Negative extracellular signals that physically direct neurite growth have also been described. The latter include the myelin inhibitory proteins, Nogo, myelin-associated glycoprotein, and oligodendrocyte-myelin glycoprotein. Potentiation of outgrowth-promoting signals, together with antagonism of myelin proteins or their convergent receptor, NgR, and its second messenger pathways, may provide new opportunities in the rational design of treatments for acute brain injury and neurodegenerative disorders.
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Affiliation(s)
- Stephen D Skaper
- Department of Pharmacology and Anesthesiology, University of Padova, Padova, Italy.
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Liu R, Shi Y, Yang HJ, Wang L, Zhang S, Xia YY, Wong JLJ, Feng ZW. Neural cell adhesion molecule potentiates the growth of murine melanoma via β-catenin signaling by association with fibroblast growth factor receptor and glycogen synthase kinase-3β. J Biol Chem 2011; 286:26127-37. [PMID: 21628472 DOI: 10.1074/jbc.m111.237297] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The neural cell adhesion molecule (NCAM) was recently shown to be involved in the progression of various tumors with diverse effects. We previously demonstrated that NCAM potentiates the cellular invasion and metastasis of melanoma. Here we further report that the growth of melanoma is obviously retarded when the expression of NCAM is silenced. We found that the proliferation of murine B16F0 melanoma cells, their colony formation on soft agar, and growth of transplanted melanoma in vivo are clearly inhibited by the introduction of NCAM siRNA. Interestingly, change of NCAM expression level is shown to regulate the activity of Wnt signaling molecule, β-catenin, markedly. This novel machinery requires the function of FGF receptor and glycogen synthase kinase-3β but is independent of the Wnt receptors, MAPK-Erk and PI3K/Akt pathways. In addition, NCAM is found to form a functional complex with β-catenin, FGF receptor, and glycogen synthase kinase-3β. Moreover, up-regulation of NCAM140 and NCAM180 appears more potent than NCAM120 in activation of β-catenin, suggesting that the intracellular domain of NCAM is required for facilitating the β-catenin signaling. Furthermore, the melanoma cells also exhibit distinct differentiation phenotypes with the NCAM silencing. Our findings reveal a novel regulatory role of NCAM in the progression of melanoma that might serve as a new therapeutic target for the treatment of melanoma.
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Affiliation(s)
- Rui Liu
- Medical School, Xi'an Jiaotong University, Xi'an 710061, China
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Chen Y, Tang BL. Unique intracellular trafficking processes associated with neural cell adhesion molecule and its intracellular signaling. ACTA ACUST UNITED AC 2011; 17:69-74. [PMID: 21244325 DOI: 10.3109/15419061.2010.549976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Homophilic binding of the neural cell adhesion molecule (NCAM) results in intracellular signaling, which also involves heterophilic engagement of coreceptors such as the fibroblast growth factor receptor (FGFR) and receptor protein tyrosine phosphatase-α (RPTPα). NCAM's own cellular dynamic itinerary includes endocytosis and recycling to the plasma membrane. Recent works suggest that NCAM could influence the trafficking of other receptor molecules that it associates with, particularly the FGFR. Furthermore, it was demonstrated that NCAM could undergo proteolytic processing upon activation. A processed fragment of NCAM, together with an N-terminal fragment of focal adhesion kinase (FAK), is translocated into the nucleus. Here, the authors discuss these rather unique (though not without precedence and analogues) receptor trafficking activities that are associated with NCAM and NCAM signaling.
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Affiliation(s)
- Yanan Chen
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, Singapore
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Køhler LB, Christensen C, Rossetti C, Fantin M, Sandi C, Bock E, Berezin V. Dennexin peptides modeled after the homophilic binding sites of the neural cell adhesion molecule (NCAM) promote neuronal survival, modify cell adhesion and impair spatial learning. Eur J Cell Biol 2010; 89:817-27. [DOI: 10.1016/j.ejcb.2010.07.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 06/22/2010] [Accepted: 07/12/2010] [Indexed: 02/03/2023] Open
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39
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Wiertz RWF, Marani E, Rutten WLC. Inhibition of neuronal cell–cell adhesion measured by the microscopic aggregation assay and impedance sensing. J Neural Eng 2010; 7:056003. [DOI: 10.1088/1741-2560/7/5/056003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Fobian K, Owczarek S, Budtz C, Bock E, Berezin V, Pedersen MV. Peptides derived from the solvent-exposed loops 3 and 4 of BDNF bind TrkB and p75(NTR) receptors and stimulate neurite outgrowth and survival. J Neurosci Res 2010; 88:1170-81. [PMID: 19908279 DOI: 10.1002/jnr.22285] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Brain-derived neurotrophic factor (BDNF) is critically involved in modeling the developing nervous system and is an important regulator of a variety of crucial functions in the mature CNS. BDNF exerts its action through interactions with two transmembrane receptors, either separately or in concert. BDNF has been implicated in several neurological disorders, and irregularities in BDNF function may have severe consequences. Administration of BDNF as a drug has thus far yielded few practicable results, and the potential side effects when using a multifunctional protein are substantial. In an effort to produce more specific compounds without side effects, small peptides mimicking protein function have been developed. The present study characterized two mimetic peptides, Betrofin 3 and Betrofin 4, derived from the BDNF sequence. Both Betrofins bound the cognate BDNF receptors, TrkB and p75(NTR), and induced neurite outgrowth and enhanced neuronal survival, probably by inducing signaling through tha Akt and MAPK pathways. Distinct, charged residues within the Betrofin sequences were identified as important for generating the neuritogenic response, which was also inhibited when BDNF was added together with either Betrofin, indicating partial agonistic effects of the peptides. Thus, two peptides derived from BDNF induced neurite outgrowth and enhanced neuronal survival, probably through binding to BDNF receptors.
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Affiliation(s)
- Kristina Fobian
- Protein Laboratory, Department of Neuroscience and Pharmacology, Faculty of Health Sciences, University of Copenhagen, Denmark
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Resende RR, da Costa JL, Kihara AH, Adhikari A, Lorençon E. Intracellular Ca2+ Regulation During Neuronal Differentiation of Murine Embryonal Carcinoma and Mesenchymal Stem Cells. Stem Cells Dev 2010; 19:379-94. [DOI: 10.1089/scd.2008.0289] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Rodrigo R. Resende
- Department of Physics, Institute of Exacts Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Instituto de Ensino e Pesquisa Santa Casa de BH (ISCM-BH), Belo Horizante, Brazil
| | - José L. da Costa
- Instrumental Analysis Laboratory, Criminalistic Institute of São Paulo, São Paulo, Brazil; Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Alexandre H. Kihara
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, Santo André, Brasil
| | - Avishek Adhikari
- Department of Biological Sciences, Columbia University, New York
| | - Eudes Lorençon
- Department of Physics, Institute of Exacts Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
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42
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Zoubaa S, Konrad R, Piontek G, Schlegel J. Inhibition of NGF-induced neurite outgrowth of rat pheochromocytoma cells (PC12) following administration of dioxyamphetamine. Neurosci Lett 2010; 476:113-8. [PMID: 20138971 DOI: 10.1016/j.neulet.2010.01.070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 01/12/2010] [Accepted: 01/28/2010] [Indexed: 10/19/2022]
Abstract
Amphetamine analogs are known to induce not only neurotoxicity at serotonergic axon terminals but also neocortical neuronal degeneration. However, a much less studied aspect involves the impact of amphetamine exposure on neuronal development. The present study investigated whether pretreatment of PC12 cells with dioxyamphetamine (DA) alters differentiation of PC12 cells by NGF and, if so, which components of the Ras/Raf/MEK/ERK pathway known to be involved in the differentiation response to NGF are particularly affected. Though exposure of PC12 cells to DA 1h prior to NGF treatment resulted in apopotosis, several PC12 cells survived. However, neurite outgrowth of these NGF-responsive cells was repressed. Immunoblots of whole cell extracts revealed a strong induction rather than inhibition of ERK phosphorylation up to 48h after DA/NGF treatment. Our results indicate that NGF-mediated neurite outgrowth was inhibited by pretreatment with DA, and this blockage of NGF-induced neuritogenesis was not due to an inhibition of ERK phosphorylation.
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Affiliation(s)
- S Zoubaa
- Institute of Pathology, Division of Neuropathology, Technical University, Ismaninger Strasse 22, D-81675 Munich, Germany.
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Treatment of stroke with a synthetic liver X receptor agonist, TO901317, promotes synaptic plasticity and axonal regeneration in mice. J Cereb Blood Flow Metab 2010; 30:102-9. [PMID: 19724285 PMCID: PMC2804900 DOI: 10.1038/jcbfm.2009.187] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this study, we tested the hypothesis that TO901317 promotes synapse plasticity and axonal regeneration after stroke. Adult male C57BL/6J mice were subjected to middle cerebral artery occlusion (MCAo) and treated with or without TO901317 starting 24 h after MCAo daily for 14 days. Axonal damage and regeneration were evaluated by immunostaining. TO901317 significantly increased synaptophysin expression and axonal regeneration, as well as decreased the expressions of amyloid betaA4 precursor protein and Nogo receptor (NgR) in the ischemic brain. To test whether TO901317 regulates the phosphorylation of phosphatidylinositol 3-kinase (p-PI3K) and Akt (p-Akt) activity in the ischemic brain, MCAo mice were treated with or without TO901317 starting 24 h after MCAo daily for 4 days and were then killed at 5 days after MCAo. TO901317 treatment significantly increased p-PI3K and p-Akt activity, but did not increase total PI3K expression in the ischemic brain. Using primary cortical neuron (PCN) culture, TO901317 significantly increased synaptophysin expression, p-PI3K activity, and decreased NgR expression compared with nontreated controls. TO901317 also significantly increased neurite outgrowth, and inhibition of the PI3K/Akt pathway by LY294002 decreased neurite outgrowth in both controls and TO901317-treated groups in cultured hypoxic PCN. These data indicate that TO901317 promotes synaptic plasticity and axonal regeneration, and that PI3K/Akt signaling activity contributes to neurite outgrowth.
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Povlsen GK, Ditlevsen DK. The neural cell adhesion molecule NCAM and lipid rafts. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 663:183-98. [PMID: 20017023 DOI: 10.1007/978-1-4419-1170-4_12] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Povlsen GK. The neural cell adhesion molecule and epidermal growth factor receptor: signaling crosstalk. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 663:199-209. [PMID: 20017024 DOI: 10.1007/978-1-4419-1170-4_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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A novel anti-inflammatory role of NCAM-derived mimetic peptide, FGL. Neurobiol Aging 2010; 31:118-28. [DOI: 10.1016/j.neurobiolaging.2008.03.017] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2007] [Revised: 03/03/2008] [Accepted: 03/20/2008] [Indexed: 11/22/2022]
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Synthetic NCAM-derived ligands of the fibroblast growth factor receptor. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 663:355-72. [PMID: 20017033 DOI: 10.1007/978-1-4419-1170-4_22] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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48
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Signaling pathways involved in NCAM-induced neurite outgrowth. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 663:151-68. [PMID: 20017021 DOI: 10.1007/978-1-4419-1170-4_10] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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NCAM-mimetic, FGL peptide, restores disrupted fibroblast growth factor receptor (FGFR) phosphorylation and FGFR mediated signaling in neural cell adhesion molecule (NCAM)-deficient mice. Brain Res 2009; 1309:1-8. [PMID: 19909731 DOI: 10.1016/j.brainres.2009.11.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2009] [Revised: 10/08/2009] [Accepted: 11/02/2009] [Indexed: 02/03/2023]
Abstract
Neural cell adhesion molecule (NCAM) is a membrane-bound glycoprotein expressed on the surface of neuronal and glial cells. Previous in vitro studies have demonstrated that NCAM promotes neuronal functions largely via three main interaction partners: the fibroblast growth factor receptor (FGFR), a member of Src family of tyrosine kinases, Fyn and Raf1 kinase which all activate different intracellular signaling pathways. The objective was to clarify, which signaling pathways are being disrupted in NCAM knockout mice and whether FGL peptide is able to restore observed disruptions. Therefore we compared the levels of phosphorylation of FGFR1, Src kinase Fyn, Raf1 kinase, MAP kinases, Akt kinase and calcium/calmodulin-dependent kinases II and IV (CaMKII and CaMKIV) in the hippocampus of NCAM knockout mice to their wild-type littermates. The data of our study show that mice constitutively deficient in all isoforms of NCAM have decreased basal phosphorylation levels of FGFR1 and CaMKII and CaMKIV. Furthermore, NCAM-mimetic, FGL peptide, is found to be able to restore FGFR1, CaMKII and CaMKIV phosphorylation levels and thereby mimic the interactions of NCAM at this receptor in NCAM deficient mice. Also, we found that Fyn(Tyr530), Raf1, MAP kinases and Akt kinase phosphorylation in adult animals is not affected by NCAM deficiency but interestingly, we found an over-expression of another cell adhesion molecule L1. We conclude that in NCAM deficient mice FGFR1-dependent signaling is disrupted and it can be restored by FGL peptide.
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