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UCSC Genome Browser Gene Interaction Graph
Gene interactions and pathways from curated databases and text-mining
BMC cancer 2010, PMID: 20650008

Degradation of HER2/neu by ANT2 shRNA suppresses migration and invasiveness of breast cancer cells.

Jang, Ji-Young; Jeon, Yoon-Kyung; Kim, Chul-Woo

BACKGROUND

In breast cancer, the HER2/neu oncoprotein, which belongs to the epidermal growth factor receptor family, may trigger activation of the phosphoinositide-3 kinase (PI3K)/Akt pathway, which controls cell proliferation, survival, migration, and invasion. In this study, we examined the question of whether or not adenine nucleotide translocase 2 (ANT2) short hairpin RNA (shRNA)-mediated down-regulation of HER2/neu and inhibitory effects on the PI3K/Akt signaling pathway suppressed migration and invasiveness of breast cancer cells.

METHODS

We utilized an ANT2 vector-based RNA interference approach to inhibition of ANT2 expression, and the HER2/neu-overexpressing human breast cancer cell line, SK-BR3, was used throughout the study.

RESULTS

In this study, ANT2 shRNA decreased HER2/neu protein levels by promoting degradation of HER2/neu protein through dissociation from heat shock protein 90 (HSP90). As a result, ANT2 shRNA induced inhibitory effects on the PI3K/Akt signaling pathway. Inhibition of PI3K/Akt signaling by ANT2 shRNA caused down-regulation of membrane-type 1 matrix metalloproteinase (MT1-MMP) and vascular endothelial growth factor (VEGF) expression, decreased matrix metalloproteinase 2 (MMP2) and MMP9 activity, and suppressed migration and invasion of breast cancer cells.

CONCLUSIONS

These results indicate that knock-down of ANT2 by shRNA down-regulates HER2/neu through suppression of HSP90's function and inhibits the PI3K/Akt signaling pathway, resulting ultimately in suppressed migration and invasion of breast cancer cells.

Diseases/Pathways annotated by Medline MESH: Breast Neoplasms, Neoplasm Invasiveness
Document information provided by NCBI PubMed

Text Mining Data

vascular endothelial growth factor → PI3K/Akt: " Inhibition of PI3K/Akt signaling by ANT2 shRNA caused down-regulation of membrane-type 1 matrix metalloproteinase ( MT1-MMP ) and vascular endothelial growth factor ( VEGF ) expression, decreased matrix metalloproteinase 2 (MMP2) and MMP9 activity, and suppressed migration and invasion of breast cancer cells "

vascular endothelial growth factor → PI3K/Akt: " Inhibition of PI3K/Akt signaling by ANT2 shRNA caused down-regulation of membrane-type 1 matrix metalloproteinase ( MT1-MMP ) and vascular endothelial growth factor ( VEGF ) expression, decreased matrix metalloproteinase 2 (MMP2) and MMP9 activity, and suppressed migration and invasion of breast cancer cells "

membrane-type 1 matrix metalloproteinase → PI3K/Akt: " Inhibition of PI3K/Akt signaling by ANT2 shRNA caused down-regulation of membrane-type 1 matrix metalloproteinase ( MT1-MMP ) and vascular endothelial growth factor ( VEGF ) expression, decreased matrix metalloproteinase 2 (MMP2) and MMP9 activity, and suppressed migration and invasion of breast cancer cells "

membrane-type 1 matrix metalloproteinase → PI3K/Akt: " Inhibition of PI3K/Akt signaling by ANT2 shRNA caused down-regulation of membrane-type 1 matrix metalloproteinase ( MT1-MMP ) and vascular endothelial growth factor ( VEGF ) expression, decreased matrix metalloproteinase 2 (MMP2) and MMP9 activity, and suppressed migration and invasion of breast cancer cells "

Manually curated Databases

No curated data.