Systemic sclerosis-endothelial cell antiangiogenic pentraxin 3 and matrix metalloprotease 12 control human breast cancer tumor vascularization and development in mice.
We have previously shown that endothelial cell matrix metalloprotease 12 (MMP12) and pentraxin 3 (PTX3) overproduction is the main alteration accounting for reduced proneness to angiogenesis in systemic sclerosis (SSc). On this basis, we stably transfected MMP12 and PTX3 in two breast cancer cell lines expressing very low amounts of the target molecules when compared with normal breast epithelial cells, relying on the hypothesis that antiangiogenic molecules released by cancer cells could confer an SSc-like antiangiogenic pattern on target endothelial cells. In Matrigel Boyden chamber invasion and capillary morphogenesis studies, transfected clones reduced endothelial cell invasion and capillary tube formation, which were abolished by tumor cell populations expressing both molecules. The Matrigel sponge assay, performed in vivo in C57/BL6 mice by injecting aliquots of lyophilized culture medium of transfected clones, indicated a similar reduction in angiogenesis. Functional studies have shown that endothelial cells treated with a culture medium of MMP12-expressing clones underwent cleavage of urokinase-type plasminogen activator receptor domain 1 which is indispensable to angiogenesis. We did not observe angiostatin production from plasminogen under the same experimental conditions. PTX3-overexpressing clones showed a powerful anti-fibroblast growth factor 2 (FGF2) activity in FGF2-dependent capillary morphogenesis. We have injected control and transfected clones into nude nu/nu (CD-1) BR mice to study the differential tumor growth pattern. We observed a reduction of tumor growth in transfected clones, which was basically complete when clones expressing both molecules were simultaneously injected. The extent of tumor necrosis suggested an antiangiogenesis-dependent inhibition of tumor development.
Margheri
Francesca
F
Department of Experimental Pathology and Oncology, University of Florence, 50134 Florence, Italy.
Serratì
Simona
S
Lapucci
Andrea
A
Anastasia
Chillà
C
Giusti
Betti
B
Pucci
Marco
M
Torre
Eugenio
E
Bianchini
Francesca
F
Calorini
Lido
L
Albini
Adriana
A
Ventura
Agostina
A
Fibbi
Gabriella
G
Del Rosso
Mario
M
D000818:Animals; D015153:Blotting, Western; D001943:Breast Neoplasms / Q000098:blood supply / Q000378:metabolism / Q000473:pathology; D002097:C-Reactive Protein / Q000235:genetics / Q000378:metabolism*; D002460:Cell Line; D045744:Cell Line, Tumor; D017077:Culture Media, Conditioned / Q000494:pharmacology; D042783:Endothelial Cells / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D016222:Fibroblast Growth Factor 2 / Q000378:metabolism; D006801:Humans; D008325:Mammary Neoplasms, Experimental / Q000098:blood supply / Q000378:metabolism / Q000473:pathology*; D053508:Matrix Metalloproteinase 12 / Q000235:genetics / Q000378:metabolism*; D051379:Mice; D008810:Mice, Inbred C57BL; D008819:Mice, Nude; D009389:Neovascularization, Pathologic / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D055293:Receptors, Urokinase Plasminogen Activator / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012595:Scleroderma, Systemic / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D000683:Serum Amyloid P-Component / Q000235:genetics / Q000378:metabolism*; D014162:Transfection; D014183:Transplantation, Heterologous; D047368:Tumor Burden; D000099153:Pentraxins
D002097:C-Reactive Protein; D017077:Culture Media, Conditioned; D016222:Fibroblast Growth Factor 2; D053508:Matrix Metalloproteinase 12; D055293:Receptors, Urokinase Plasminogen Activator; D000683:Serum Amyloid P-Component; D000099153:Pentraxins