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. 2009 Nov 15;69(22):8579-84.
doi: 10.1158/0008-5472.CAN-09-1934. Epub 2009 Nov 3.

Inhibition of lipocalin 2 impairs breast tumorigenesis and metastasis

Xiaohong Leng  1 , Tian Ding, Hui Lin, Yan Wang, Limei Hu, Jianhua Hu, Barry Feig, Wei Zhang, Lajos Pusztai, W Fraser Symmans, Yun Wu, Ralph B Arlinghaus
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"VSports注册入口" Inhibition of lipocalin 2 impairs breast tumorigenesis and metastasis

Xiaohong Leng et al. Cancer Res. .

V体育官网 - Abstract

Lipocalin 2 (LCN2; also known as NGAL) is a secreted glycoprotein and its elevated expression has been observed in breast cancers. However, the importance of LCN2 in breast tumorigenesis is unclear. Here, we employed a spontaneous mammary tumor mouse model showing that MMTV-ErbB2(V664E) mice lacking mouse LCN2 had significantly delayed mammary tumor formation and metastasis with reduced matrix metalloproteinase-9 activity in the blood. LCN2 expression is upregulated by HER2/phosphoinositide 3-kinase/AKT/NF-kappaB pathway. Decreasing LCN2 expression significantly reduced the invasion and migration ability of HER2(+) breast cancer cells. Furthermore, injecting an anti-mouse LCN2 antibody into mice bearing established murine breast tumors resulted in significant blockage of lung metastasis. Our findings indicate that LCN2 is a critical factor in enhancing breast tumor formation and progression possibly in part by stabilizing matrix metalloproteinase-9. Our results suggest that inhibition of LCN2 function by an inhibitory monoclonal antibody has potential for breast cancer therapy, particularly by interfering with metastasis in aggressive types of breast cancer. VSports手机版.

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