Mechanisms of regulation of CXCR4/SDF-1 (CXCL12)-dependent migration and homing in multiple myeloma. Alsayed, Y., Ngo, H., Runnels, J., Leleu, X., Singha, U., K., Pitsillides, C., M., Spencer, J., A., Kimlinger, T., Ghobrial, J., M., Jia, X., Lu, G., Timm, M., Kumar, A., Côté, D., Veilleux, I., Hedin, K., E., Roodman, G., D., Witzig, T., E., Kung, A., L., Hideshima, T., Anderson, K., C., Lin, C., P., & Ghobrial, I., M. Blood, 109(7):2708-17, American Society of Hematology, 4, 2007. ![Mechanisms of regulation of CXCR4/SDF-1 (CXCL12)-dependent migration and homing in multiple myeloma. [link]](https://bibbase.org/img/filetypes/link.svg "link")
Website abstract bibtex The mechanisms by which multiple myeloma (MM) cells migrate and home to the bone marrow are not well understood. In this study, we sought to determine the effect of the chemokine SDF-1 (CXCL12) and its receptor CXCR4 on the migration and homing of MM cells. We demonstrated that CXCR4 is differentially expressed at high levels in the peripheral blood and is down-regulated in the bone marrow in response to high levels of SDF-1. SDF-1 induced motility, internalization, and cytoskeletal rearrangement in MM cells evidenced by confocal microscopy. The specific CXCR4 inhibitor AMD3100 and the anti-CXCR4 antibody MAB171 inhibited the migration of MM cells in vitro. CXCR4 knockdown experiments demonstrated that SDF-1-dependent migration was regulated by the P13K and ERK/ MAPK pathways but not by p38 MAPK. In addition, we demonstrated that AMD3100 inhibited the homing of MM cells to the bone marrow niches using in vivo flow cytometry, in vivo confocal microscopy, and whole body bioluminescence imaging. This study, therefore, demonstrates that SDF-1/CXCR4 is a critical regulator of MM homing and that it provides the framework for inhibitors of this pathway to be used in future clinical trials to abrogate MM trafficking.
@article{
title = {Mechanisms of regulation of CXCR4/SDF-1 (CXCL12)-dependent migration and homing in multiple myeloma.},
type = {article},
year = {2007},
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keywords = {Animals,Antibodies,Bone Marrow,Bone Marrow: immunology,Bone Marrow: pathology,CXC,CXC: antagonists & inhibitors,CXC: blood,CXC: physiology,CXCR4,CXCR4: antagonists & inhibitors,CXCR4: blood,CXCR4: genetics,CXCR4: physiology,Case-Control Studies,Cell Line,Cell Movement,Cell Movement: drug effects,Cell Movement: physiology,Chemokine CXCL12,Chemokines,Chemotaxis,Chemotaxis: drug effects,Chemotaxis: physiology,Cytoskeleton,Cytoskeleton: physiology,Heterocyclic Compounds,Heterocyclic Compounds: pharmacology,Humans,Inbred NOD,MAP Kinase Signaling System,Mice,Monoclonal,Monoclonal: pharmacology,Multiple Myeloma,Multiple Myeloma: immunology,Multiple Myeloma: pathology,Multiple Myeloma: physiopathology,Receptors,SCID,Tumor},
pages = {2708-17},
volume = {109},
websites = {http://www.bloodjournal.org/content/109/7/2708.abstract},
month = {4},
publisher = {American Society of Hematology},
day = {1},
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abstract = {The mechanisms by which multiple myeloma (MM) cells migrate and home to the bone marrow are not well understood. In this study, we sought to determine the effect of the chemokine SDF-1 (CXCL12) and its receptor CXCR4 on the migration and homing of MM cells. We demonstrated that CXCR4 is differentially expressed at high levels in the peripheral blood and is down-regulated in the bone marrow in response to high levels of SDF-1. SDF-1 induced motility, internalization, and cytoskeletal rearrangement in MM cells evidenced by confocal microscopy. The specific CXCR4 inhibitor AMD3100 and the anti-CXCR4 antibody MAB171 inhibited the migration of MM cells in vitro. CXCR4 knockdown experiments demonstrated that SDF-1-dependent migration was regulated by the P13K and ERK/ MAPK pathways but not by p38 MAPK. In addition, we demonstrated that AMD3100 inhibited the homing of MM cells to the bone marrow niches using in vivo flow cytometry, in vivo confocal microscopy, and whole body bioluminescence imaging. This study, therefore, demonstrates that SDF-1/CXCR4 is a critical regulator of MM homing and that it provides the framework for inhibitors of this pathway to be used in future clinical trials to abrogate MM trafficking.},
bibtype = {article},
author = {Alsayed, Yazan and Ngo, Hai and Runnels, Judith and Leleu, Xavier and Singha, Ujjal K and Pitsillides, Costas M and Spencer, Joel A and Kimlinger, Teresa and Ghobrial, Joanna M and Jia, Xiaoying and Lu, Ganwei and Timm, Michael and Kumar, Ashok and Côté, Daniel and Veilleux, Israel and Hedin, Karen E and Roodman, G David and Witzig, Thomas E and Kung, Andrew L and Hideshima, Teru and Anderson, Kenneth C and Lin, Charles P and Ghobrial, Irene M},
journal = {Blood},
number = {7}
}
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