Leptin utilizes Jun N-terminal kinases to stimulate the invasion of MCF-7 breast cancer cells.

Abstract:

:In breast tumors, high levels of leptin have been associated with increased incidence of breast cancer metastasis. Breast cancer metastasis is directly associated with breast cancer cell invasion. However, whether leptin could augment breast cancer cell invasion is not known. Here we showed that leptin increased the invasiveness and the matrix metallo-proteinase-2 (MMP-2) activity of the MCF-7 breast cancer cell line. Leptin stimulated the phosphorylation of extracellular signals regulated kinases, signal transducers and activators of transcription 3 and Jun N-terminal kinases (JNK); however, only inhibition of JNK decreased leptin-mediated activation of MMP-2. Furthermore, inhibition of JNK suppressed leptin-mediated breast cancer cell invasion. Here we report the novel findings that leptin increased invasion of breast cancer cells by activating JNK, resulting in increased MMP-2 activity.

journal_name

Clin Exp Metastasis

authors

McMurtry V,Simeone AM,Nieves-Alicea R,Tari AM

doi

10.1007/s10585-008-9231-x

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

197-204

issue

3

eissn

0262-0898

issn

1573-7276

journal_volume

26

pub_type

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