Inhibition of the Interleukin-11-STAT3 Axis Attenuates Hypoxia-Induced Migration and Invasion in MDA-MB-231 Breast Cancer Cells
The Korean Journal of Physiology and Pharmacology
;
: 391-396, 2014.
Article
in English
| WPRIM
| ID: wpr-728451
ABSTRACT
Although interleukin-11 (IL-11) has been reported to be elevated in hypoxic tumors and has been associated with a poor prognosis in various cancers, little is known about its precise role in promoting metastasis in hypoxic tumors. In the present study, the molecular mechanism underlying the effects of IL-11 on MDA-MB-231 breast cancer cells migration and invasion in relation to metastasis under hypoxic conditions has been defined. Inhibition of IL-11 expression or function using small interfering RNA (siRNA) or a neutralizing antibody attenuated hypoxic MDA-MB-231 breast cancer cell migration and invasion through down-regulation of matrix metalloproteinases (MMPs) and activation of epithelial-to-mesenchymal transition (EMT) related gene expression. In addition, hypoxia-induced IL-11 increased STAT3 phosphorylation and STAT3 knockdown suppressed hypoxic MDA-MB-231 breast cancer cell invasion due to reduced MMP levels and reprogrammed EMT-related gene expression. These results suggest that one of the hypoxic metastasis pathways and the regulation of this pathway could be a potential target for novel cancer therapeutics.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Phosphorylation
/
Prognosis
/
Axis, Cervical Vertebra
/
Breast Neoplasms
/
Down-Regulation
/
Gene Expression
/
Cell Movement
/
Interleukin-11
/
Matrix Metalloproteinases
/
RNA, Small Interfering
Type of study:
Prognostic study
Language:
English
Journal:
The Korean Journal of Physiology and Pharmacology
Year:
2014
Type:
Article
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