TY - JOUR
T1 - Lysyl oxidase secreted by tumour endothelial cells promotes angiogenesis and metastasis
AU - Osawa, T.
AU - Ohga, N.
AU - Akiyama, K.
AU - Hida, Y.
AU - Kitayama, K.
AU - Kawamoto, T.
AU - Yamamoto, K.
AU - Maishi, N.
AU - Kondoh, M.
AU - Onodera, Y.
AU - Fujie, M.
AU - Shinohara, N.
AU - Nonomura, K.
AU - Shindoh, M.
AU - Hida, K.
PY - 2013/10/15
Y1 - 2013/10/15
N2 - Background:Molecules that are highly expressed in tumour endothelial cells (TECs) may be candidates for specifically targeting TECs. Using DNA microarray analysis, we found that the lysyl oxidase (LOX) gene was upregulated in TECs compared with its expression in normal endothelial cells (NECs). LOX is an enzyme that enhances invasion and metastasis of tumour cells. However, there are no reports on the function of LOX in isolated TECs.Methods:TECs and NECs were isolated to investigate LOX function in TECs. LOX inhibition of in vivo tumour growth was also assessed using β-aminopropionitrile (BAPN).Results:LOX expression was higher in TECs than in NECs. LOX knockdown inhibited cell migration and tube formation by TECs, which was associated with decreased phosphorylation of focal adhesion kinase (Tyr 397). Immunostaining showed high LOX expression in human tumour vessels in vivo. Tumour angiogenesis and micrometastasis were inhibited by BAPN in an in vivo tumour model.Conclusion:LOX may be a TEC marker and a possible therapeutic target for novel antiangiogenic therapy.
AB - Background:Molecules that are highly expressed in tumour endothelial cells (TECs) may be candidates for specifically targeting TECs. Using DNA microarray analysis, we found that the lysyl oxidase (LOX) gene was upregulated in TECs compared with its expression in normal endothelial cells (NECs). LOX is an enzyme that enhances invasion and metastasis of tumour cells. However, there are no reports on the function of LOX in isolated TECs.Methods:TECs and NECs were isolated to investigate LOX function in TECs. LOX inhibition of in vivo tumour growth was also assessed using β-aminopropionitrile (BAPN).Results:LOX expression was higher in TECs than in NECs. LOX knockdown inhibited cell migration and tube formation by TECs, which was associated with decreased phosphorylation of focal adhesion kinase (Tyr 397). Immunostaining showed high LOX expression in human tumour vessels in vivo. Tumour angiogenesis and micrometastasis were inhibited by BAPN in an in vivo tumour model.Conclusion:LOX may be a TEC marker and a possible therapeutic target for novel antiangiogenic therapy.
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U2 - 10.1038/bjc.2013.535
DO - 10.1038/bjc.2013.535
M3 - Article
C2 - 24045659
AN - SCOPUS:84885901954
SN - 0007-0920
VL - 109
SP - 2237
EP - 2247
JO - British Journal of Cancer
JF - British Journal of Cancer
IS - 8
ER -