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Published in: Clinical & Experimental Metastasis 5/2019

01-10-2019 | Metastasis | Research Paper

Co-expression of carcinoembryonic antigen-related cell adhesion molecule 6 and 8 inhibits proliferation and invasiveness of breast carcinoma cells

Authors: Erina Iwabuchi, Yasuhiro Miki, Yoshiaki Onodera, Yukiko Shibahara, Kiyoshi Takagi, Takashi Suzuki, Takanori Ishida, Hironobu Sasano

Published in: Clinical & Experimental Metastasis | Issue 5/2019

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Abstract

The carcinoembryonic antigen-related cell adhesion molecule (CEACAM) 6 and CEACAM8 form heterodimers and exert their effects. Therefore, we examined the effects of CEACAM6 and CEACAM8 co-expression in breast cancer. We first studied CEACAM6/8 expression using immunohistochemistry in 109 patients with breast cancer. We then established MCF-7 cells that were stably transfected with CEACAM8 and studied cell proliferation, invasion and adhesion. The number of CEACAM6 and CEACAM8 double-positive breast carcinoma cells significantly increased in patients with low histopathological grade and stage. Proximity ligation assay (PLA) confirmed high CEACAM6/8 expression in MCF-7 cells. CEACAM6/8 expression promoted the adhesion of MCF-7 cells to endothelial cell monolayers but inhibited their invasion and proliferation. Furthermore, CEACAM6 status in carcinoma cells was significantly higher in bone than in lung metastases. CEACAM6/8 expression is associated with the inhibition of vascular invasion and cell proliferation. CEACAM6 expression was also considered to be involved in bone metastases of breast cancer. This is the first study to demonstrate the possible role of CEACAM6/8 heterodimer and CEACAM6 expression in breast cancer patients.
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Metadata
Title
Co-expression of carcinoembryonic antigen-related cell adhesion molecule 6 and 8 inhibits proliferation and invasiveness of breast carcinoma cells
Authors
Erina Iwabuchi
Yasuhiro Miki
Yoshiaki Onodera
Yukiko Shibahara
Kiyoshi Takagi
Takashi Suzuki
Takanori Ishida
Hironobu Sasano
Publication date
01-10-2019
Publisher
Springer Netherlands
Published in
Clinical & Experimental Metastasis / Issue 5/2019
Print ISSN: 0262-0898
Electronic ISSN: 1573-7276
DOI
https://doi.org/10.1007/s10585-019-09981-2

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