Ephrin-B2-EphB4 communication mediates tumor-endothelial cell interactions during hematogenous spread to spinal bone in a melanoma metastasis model
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Ephrin-B2-EphB4 communication mediates tumor-endothelial cell interactions during hematogenous spread to spinal bone in a melanoma metastasis model. / Broggini, Thomas; Piffko, Andras; Hoffmann, Christian J; Ghori, Adnan; Harms, Christoph; Adams, Ralf H; Vajkoczy, Peter; Czabanka, Marcus.
In: ONCOGENE, Vol. 39, No. 47, 11.2020, p. 7063-7075.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Ephrin-B2-EphB4 communication mediates tumor-endothelial cell interactions during hematogenous spread to spinal bone in a melanoma metastasis model
AU - Broggini, Thomas
AU - Piffko, Andras
AU - Hoffmann, Christian J
AU - Ghori, Adnan
AU - Harms, Christoph
AU - Adams, Ralf H
AU - Vajkoczy, Peter
AU - Czabanka, Marcus
PY - 2020/11
Y1 - 2020/11
N2 - Metastases account for the majority of cancer deaths. Bone represents one of the most common sites of distant metastases, and spinal bone metastasis is the most common source of neurological morbidity in cancer patients. During metastatic seeding of cancer cells, endothelial-tumor cell interactions govern extravasation to the bone and potentially represent one of the first points of action for antimetastatic treatment. The ephrin-B2-EphB4 pathway controls cellular interactions by inducing repulsive or adhesive properties, depending on forward or reverse signaling. Here, we report that in an in vivo metastatic melanoma model, ephrin-B2-mediated activation of EphB4 induces tumor cell repulsion from bone endothelium, translating in reduced spinal bone metastatic loci and improved neurological function. Selective ephrin-B2 depletion in endothelial cells or EphB4 inhibition increases bone metastasis and shortens the time window to hind-limb locomotion deficit from spinal cord compression. EphB4 overexpression in melanoma cells ameliorates the metastatic phenotype and improves neurological outcome. Timely harvesting of bone tissue after tumor cell injection and intravital bone microscopy revealed less tumor cells attached to ephrin-B2-positive endothelial cells. These results suggest that ephrin-B2-EphB4 communication influences bone metastasis formation by altering melanoma cell repulsion/adhesion to bone endothelial cells, and represents a molecular target for therapeutic intervention.
AB - Metastases account for the majority of cancer deaths. Bone represents one of the most common sites of distant metastases, and spinal bone metastasis is the most common source of neurological morbidity in cancer patients. During metastatic seeding of cancer cells, endothelial-tumor cell interactions govern extravasation to the bone and potentially represent one of the first points of action for antimetastatic treatment. The ephrin-B2-EphB4 pathway controls cellular interactions by inducing repulsive or adhesive properties, depending on forward or reverse signaling. Here, we report that in an in vivo metastatic melanoma model, ephrin-B2-mediated activation of EphB4 induces tumor cell repulsion from bone endothelium, translating in reduced spinal bone metastatic loci and improved neurological function. Selective ephrin-B2 depletion in endothelial cells or EphB4 inhibition increases bone metastasis and shortens the time window to hind-limb locomotion deficit from spinal cord compression. EphB4 overexpression in melanoma cells ameliorates the metastatic phenotype and improves neurological outcome. Timely harvesting of bone tissue after tumor cell injection and intravital bone microscopy revealed less tumor cells attached to ephrin-B2-positive endothelial cells. These results suggest that ephrin-B2-EphB4 communication influences bone metastasis formation by altering melanoma cell repulsion/adhesion to bone endothelial cells, and represents a molecular target for therapeutic intervention.
KW - Animals
KW - Bone Marrow/diagnostic imaging
KW - Cell Adhesion
KW - Cell Communication/drug effects
KW - Cell Line, Tumor/transplantation
KW - Endothelial Cells/pathology
KW - Female
KW - Intravital Microscopy
KW - Magnetic Resonance Imaging
KW - Male
KW - Melanoma, Experimental/drug therapy
KW - Mice
KW - Mice, Knockout
KW - Microscopy, Video
KW - Osteoblasts/pathology
KW - Pyrazoles/pharmacology
KW - Pyrimidines/pharmacology
KW - Receptor, EphB2/genetics
KW - Receptor, EphB4/antagonists & inhibitors
KW - Skin Neoplasms/drug therapy
KW - Skull/pathology
KW - Spinal Cord Compression/diagnosis
KW - Spinal Neoplasms/complications
KW - Spine/cytology
U2 - 10.1038/s41388-020-01473-y
DO - 10.1038/s41388-020-01473-y
M3 - SCORING: Journal article
C2 - 32989254
VL - 39
SP - 7063
EP - 7075
JO - ONCOGENE
JF - ONCOGENE
SN - 0950-9232
IS - 47
ER -