Ecto-5'-nucleotidase Promotes Invasion, Migration and Adhesion of Human Breast Cancer Cells

Overview

Journal J Cancer Res Clin Oncol

Specialty Oncology

Date 2007 Aug 3

PMID 17671792

Citations 90

Authors

Li Wang

Xuerui Zhou

Tingting Zhou

Dong Ma

Sifeng Chen

Xiuling Zhi

Lianhua Yin

Zhimin Shao

Zhouluo Ou

Ping Zhou

Affiliations

Soon will be listed here.

Abstract

Purpose: Associated with many molecules, metastasis includes cell adhesion to extracellular matrix, migration towards specific direction and invasion into local vessel of distant organs. The purpose of the present study was to evaluate the role of ecto-5'-nucleotidase (eN, ecto-5-NT, CD73) generated extracellular adenosine in biologically malignant behaviors of human breast cancer cell lines.

Materials And Methods: Two human breast cancer cell lines, T-47D with lower expression of CD73 and MB-MDA-231 with higher expression of CD73, were used to investigate the functions of CD73. The effects of CD73 over-expression on invasion, migration and adhesion were observed in T-47D transfected with pcDNA-NT5E plasmid. The effects of specific CD73 inhibitor, alpha, ss-methylene ADP (APCP), were observed in MB-MDA-231 cells.

Results: The results showed CD-73 overexpression increased invasion, migration and adhesion to ECM of the pcDNA-NT5E transfected T-47D cells compared to the saline and mock vector controls. The increased cell mobility of CD-73-overexpressed T-47D cells was blocked by APCP. Adenosine increased the mobility of wild type T-47D cells. APCP inhibited the mobility of the MB-MDA-231 cells.

Conclusion: Taken together, our results indicated that CD73 may facilitate the adhesion, migration and invasion of human breast cancer cells through its enzyme activity of generating adenosine. This study provided a possibly molecular mechanism of metastasis of breast carcinoma.

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