Differential role of MACC1 expression and its regulation of the HGF/c‑Met pathway between breast and colorectal cancer

International Journal of Oncology
Aiko SuetaHirotaka Iwase

Abstract

The newly identified gene, metastasis‑associated in colon cancer 1 (MACC1), is suggested to be a transcriptional regulator of c‑Met, leading to cancer progression in colorectal cancer. To date however, little is known of the role of MACC1 in breast cancer. In a series of 300 breast cancer patients, we analyzed the association of MACC1 mRNA and protein expression with breast cancer survival using Cox proportional hazard models. In an in vitro study, we evaluated activities of c‑Met protein after transfection with a MACC1‑harboring plasmid as well as the binding ability of MACC1 to the c‑Met promoter using a chromatin immunoprecipitation (ChIP) assay. In survival analyses, reduced MACC1 expression was associated with patient mortality. MACC1 expression was an independent prognostic factor in multivariate analysis. In the cell lines tested, MACC1 expression was much higher in colorectal than in breast cancer cells. After cells were transfected with MACC1, c‑Met expression was not induced in MCF7 cells, whereas corresponding c‑Met expression was upregulated in SW480 cells. Further, SW480 cells transfected with MACC1 showed enhanced migratory ability, whereas in MDA‑MB‑231 cells, transfection of MACC1 had no impact on this ability. ...Continue Reading

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Mar 23, 2019·BMC Bioinformatics·Maria Beatriz Walter CostaKatja Nowick
Nov 28, 2020·Tumour Biology : the Journal of the International Society for Oncodevelopmental Biology and Medicine·Rohini M NairGeeta K Vemuganti

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