Antagonistic L1 Adhesion Molecule Mimetic Compounds Inhibit Glioblastoma Cell Migration In Vitro

Cell adhesion molecule L1 is a cell surface glycoprotein that promotes neuronal cell migration, fosters regeneration after spinal cord injury and ameliorates the consequences of neuronal degeneration in mouse and zebrafish models. Counter-indicative features of L1 were found in tumor progression: th...

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Main Authors: Vini Nagaraj, Mirai Mikhail, Micol Baronio, Alessia Gatto, Ashana Nayak, Thomas Theis, Ugo Cavallaro, Melitta Schachner
Format: Article
Language:English
Published: MDPI AG 2022-03-01
Series:Biomolecules
Subjects:
Online Access:https://www.mdpi.com/2218-273X/12/3/439
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author Vini Nagaraj
Mirai Mikhail
Micol Baronio
Alessia Gatto
Ashana Nayak
Thomas Theis
Ugo Cavallaro
Melitta Schachner
author_facet Vini Nagaraj
Mirai Mikhail
Micol Baronio
Alessia Gatto
Ashana Nayak
Thomas Theis
Ugo Cavallaro
Melitta Schachner
author_sort Vini Nagaraj
collection DOAJ
description Cell adhesion molecule L1 is a cell surface glycoprotein that promotes neuronal cell migration, fosters regeneration after spinal cord injury and ameliorates the consequences of neuronal degeneration in mouse and zebrafish models. Counter-indicative features of L1 were found in tumor progression: the more L1 is expressed, the more tumor cells migrate and increase their metastatic potential. L1′s metastatic potential is further evidenced by its promotion of epithelial–mesenchymal transition, endothelial cell transcytosis and resistance to chemo- and radiotherapy. These unfortunate features are indicated by observations that cells that normally do not express L1 are induced to express it when becoming malignant. With the aim to ameliorate the devastating functions of L1 in tumors, we designed an alternative approach to counteract tumor cell migration. Libraries of small organic compounds were screened using the ELISA competition approach similar to the one that we used for identifying L1 agonistic mimetics. Whereas in the former approach, a function-triggering monoclonal antibody was used for screening libraries, we here used the function-inhibiting monoclonal antibody 324 that reduces the migration of neurons. We now show that the L1 antagonistic mimetics anagrelide, 2-hydroxy-5-fluoropyrimidine and mestranol inhibit the migration of cultured tumor cells in an L1-dependent manner, raising hopes for therapy.
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spelling doaj.art-6facbcba1e0d4586a0fb15f0cd518e1b2023-11-24T00:35:52ZengMDPI AGBiomolecules2218-273X2022-03-0112343910.3390/biom12030439Antagonistic L1 Adhesion Molecule Mimetic Compounds Inhibit Glioblastoma Cell Migration In VitroVini Nagaraj0Mirai Mikhail1Micol Baronio2Alessia Gatto3Ashana Nayak4Thomas Theis5Ugo Cavallaro6Melitta Schachner7Keck Center for Collaborative Neuroscience, Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USAKeck Center for Collaborative Neuroscience, Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USAUnit of Gynaecological Oncology Research, European Institute of Oncology IRCSS, 20139 Milan, ItalyUnit of Gynaecological Oncology Research, European Institute of Oncology IRCSS, 20139 Milan, ItalyKeck Center for Collaborative Neuroscience, Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USAKeck Center for Collaborative Neuroscience, Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USAUnit of Gynaecological Oncology Research, European Institute of Oncology IRCSS, 20139 Milan, ItalyKeck Center for Collaborative Neuroscience, Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USACell adhesion molecule L1 is a cell surface glycoprotein that promotes neuronal cell migration, fosters regeneration after spinal cord injury and ameliorates the consequences of neuronal degeneration in mouse and zebrafish models. Counter-indicative features of L1 were found in tumor progression: the more L1 is expressed, the more tumor cells migrate and increase their metastatic potential. L1′s metastatic potential is further evidenced by its promotion of epithelial–mesenchymal transition, endothelial cell transcytosis and resistance to chemo- and radiotherapy. These unfortunate features are indicated by observations that cells that normally do not express L1 are induced to express it when becoming malignant. With the aim to ameliorate the devastating functions of L1 in tumors, we designed an alternative approach to counteract tumor cell migration. Libraries of small organic compounds were screened using the ELISA competition approach similar to the one that we used for identifying L1 agonistic mimetics. Whereas in the former approach, a function-triggering monoclonal antibody was used for screening libraries, we here used the function-inhibiting monoclonal antibody 324 that reduces the migration of neurons. We now show that the L1 antagonistic mimetics anagrelide, 2-hydroxy-5-fluoropyrimidine and mestranol inhibit the migration of cultured tumor cells in an L1-dependent manner, raising hopes for therapy.https://www.mdpi.com/2218-273X/12/3/439L1CAMCD171small compound librariesmonoclonal L1 antibody 324antagonist mimeticsmigration
spellingShingle Vini Nagaraj
Mirai Mikhail
Micol Baronio
Alessia Gatto
Ashana Nayak
Thomas Theis
Ugo Cavallaro
Melitta Schachner
Antagonistic L1 Adhesion Molecule Mimetic Compounds Inhibit Glioblastoma Cell Migration In Vitro
Biomolecules
L1CAM
CD171
small compound libraries
monoclonal L1 antibody 324
antagonist mimetics
migration
title Antagonistic L1 Adhesion Molecule Mimetic Compounds Inhibit Glioblastoma Cell Migration In Vitro
title_full Antagonistic L1 Adhesion Molecule Mimetic Compounds Inhibit Glioblastoma Cell Migration In Vitro
title_fullStr Antagonistic L1 Adhesion Molecule Mimetic Compounds Inhibit Glioblastoma Cell Migration In Vitro
title_full_unstemmed Antagonistic L1 Adhesion Molecule Mimetic Compounds Inhibit Glioblastoma Cell Migration In Vitro
title_short Antagonistic L1 Adhesion Molecule Mimetic Compounds Inhibit Glioblastoma Cell Migration In Vitro
title_sort antagonistic l1 adhesion molecule mimetic compounds inhibit glioblastoma cell migration in vitro
topic L1CAM
CD171
small compound libraries
monoclonal L1 antibody 324
antagonist mimetics
migration
url https://www.mdpi.com/2218-273X/12/3/439
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