The selective adhesion molecule inhibitor Natalizumab decreases multiple myeloma cell growth in the bone marrow microenvironment: therapeutic implications

Recent advances regarding the introduction of anti-adhesion strategies as a novel therapeutic concept in oncology hold great promise. Here we evaluated the therapeutic potential of the new-in-class-molecule selective-adhesion-molecule (SAM) inhibitor Natalizumab, a recombinant humanized IgG4 monoclo...

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Hauptverfasser: Podar, Klaus (VerfasserIn) , Zimmerhackl, Alexander (VerfasserIn) , Fulciniti, Mariateresa (VerfasserIn) , Tonon, Giovanni (VerfasserIn) , Hainz, Ursula (VerfasserIn) , Tai, Yu-Tzu (VerfasserIn) , Vallet, Sonia (VerfasserIn) , Halama, Niels (VerfasserIn) , Jäger, Dirk (VerfasserIn) , Olson, Dian L. (VerfasserIn) , Sattler, Martin (VerfasserIn) , Chauhan, Dharminder (VerfasserIn) , Anderson, Kenneth C. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 19 September 2011
In: British journal of haematology
Year: 2011, Jahrgang: 155, Heft: 4, Pages: 438-448
ISSN:1365-2141
DOI:10.1111/j.1365-2141.2011.08864.x
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1111/j.1365-2141.2011.08864.x
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Verfasserangaben:Klaus Podar, Alexander Zimmerhackl, Mariateresa Fulciniti, Giovanni Tonon, Ursula Hainz, Yu-Tzu Tai, Sonia Vallet, Niels Halama, Dirk Jäger, Dian L. Olson, Martin Sattler, Dharminder Chauhan and Kenneth C. Anderson

MARC

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520 |a Recent advances regarding the introduction of anti-adhesion strategies as a novel therapeutic concept in oncology hold great promise. Here we evaluated the therapeutic potential of the new-in-class-molecule selective-adhesion-molecule (SAM) inhibitor Natalizumab, a recombinant humanized IgG4 monoclonal antibody, which binds integrin-α4, in multiple myeloma (MM). Natalizumab, but not a control antibody, inhibited adhesion of MM cells to non-cellular and cellular components of the microenvironment as well as disrupted the binding of already adherent MM cells. Consequently, Natalizumab blocked both the proliferative effect of MM-bone marrow (BM) stromal cell interaction on tumour cells, and vascular endothelial growth factor (VEGF)-induced angiogenesis in the BM milieu. Moreover, Natalizumab also blocked VEGF- and insulin-like growth factor 1 (IGF-1)-induced signalling sequelae triggering MM cell migration. In agreement with our in vitro results, Natalizumab inhibited tumour growth, VEGF secretion, and angiogenesis in a human severe combined immunodeficiency murine model of human MM in the human BM microenvironment. Importantly, Natalizumab not only blocked tumour cell adhesion, but also chemosensitized MM cells to bortezomib, in an in vitro therapeutically representative human MM-stroma cell co-culture system model. Our data therefore provide the rationale for the clinical evaluation of Natalizumab, preferably in combination with novel agents (e.g. bortezomib) to enhance MM cytotoxicity and improve patient outcome. 
650 4 |a Animals 
650 4 |a Antibodies, Monoclonal, Humanized 
650 4 |a Bone Marrow Cells 
650 4 |a Cell Adhesion 
650 4 |a Cell Growth Processes 
650 4 |a Cell Line, Tumor 
650 4 |a Cell Movement 
650 4 |a Disease Models, Animal 
650 4 |a Endothelial Cells 
650 4 |a Fibronectins 
650 4 |a Humans 
650 4 |a Immunohistochemistry 
650 4 |a Integrin alpha4 
650 4 |a Male 
650 4 |a Mice 
650 4 |a Mice, SCID 
650 4 |a Multiple Myeloma 
650 4 |a Natalizumab 
650 4 |a Neovascularization, Pathologic 
650 4 |a Signal Transduction 
650 4 |a Tumor Microenvironment 
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