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Erschienen in: Annals of Surgical Oncology 11/2014

01.10.2014 | Translational Research and Biomarkers

Aberrant Expression of Plastin-3 Via Copy Number Gain Induces the Epithelial–Mesenchymal Transition in Circulating Colorectal Cancer Cells

verfasst von: Keishi Sugimachi, MD, PhD, Takehiko Yokobori, MD, PhD, Hisae Iinuma, PhD, Masami Ueda, MD, Hiroki Ueo, MD, Yoshiaki Shinden, MD, Hidetoshi Eguchi, MD, PhD, Tomoya Sudo, MD, PhD, Akira Suzuki, MD, PhD, Yoshihiko Maehara, MD, PhD, Masaki Mori, MD, PhD, Koshi Mimori, MD, PhD

Erschienen in: Annals of Surgical Oncology | Ausgabe 11/2014

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Abstract

Purpose

Plastin-3 (PLS3) is a novel marker for circulating tumor cells (CTCs) in colorectal cancer (CRC). We sought to investigate the mechanisms mediating the aberrant expression of PLS3, the role of PLS3 in the epithelial–mesenchymal transition (EMT), and its association with the acquisition of invasive and metastatic abilities in human CRC.

Methods

The expression levels of PLS3 messenger RNA in the tumor drainage venous blood (TDB) were examined in 177 CRC cases, and the associations between PLS3 expression and Xq23 copy numbers were analyzed in 132 CRC samples. We then established a stable PLS3-expressing CRC cell line and assessed the role of PLS3 in the EMT.

Results

In clinical CRC cases, high expression of PLS3 in CTCs of TDB as well as peripheral blood was established as an independent prognostic factor of overall survival (p < 0.001), and the copy number gain of Xq23, which is the locus of the PLS3 gene, was significantly related to PLS3 overexpression. PLS3 induced the EMT via transforming growth factor (TGF)-β signaling and resulted in the acquisition of invasive ability in CRC cells.

Conclusions

The aberrant expression of PLS3 was associated with copy number gain in CTCs from primary tumors and was involved in the regulation of the EMT, contributing to a poor prognosis in CRC patients.
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Metadaten
Titel
Aberrant Expression of Plastin-3 Via Copy Number Gain Induces the Epithelial–Mesenchymal Transition in Circulating Colorectal Cancer Cells
verfasst von
Keishi Sugimachi, MD, PhD
Takehiko Yokobori, MD, PhD
Hisae Iinuma, PhD
Masami Ueda, MD
Hiroki Ueo, MD
Yoshiaki Shinden, MD
Hidetoshi Eguchi, MD, PhD
Tomoya Sudo, MD, PhD
Akira Suzuki, MD, PhD
Yoshihiko Maehara, MD, PhD
Masaki Mori, MD, PhD
Koshi Mimori, MD, PhD
Publikationsdatum
01.10.2014
Verlag
Springer US
Erschienen in
Annals of Surgical Oncology / Ausgabe 11/2014
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-013-3366-y

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