Expression of PSMA 7 and its effect on proliferation, invasion, migration and tumorigenesis of gastric cancer.
10.12122/j.issn.1673-4254.2019.04.02
- Author:
Shujing XIA
1
;
Lili ZHANG
2
;
Fenggan CHENG
2
;
Zhenqing FENG
1
;
Lungen LU
3
Author Information
1. Department of Pathology, Nanjing Medical University, Nanjing 211166, China.
2. Department of Gastroenterology, Shanghai General Hospital Affiliated to Nanjing Medical University, Shanghai 201600, China.
3. Key Laboratory of Antibody Technology of National Health Commission, Nanjing 211166, China.
- Publication Type:Journal Article
- Keywords:
PSMA7;
gastric cancer;
invasion;
migration;
proliferation
- MeSH:
Animals;
Cell Line, Tumor;
Cell Movement;
Cell Proliferation;
Humans;
Mice;
Mice, Inbred BALB C;
Mice, Nude;
Neoplasm Invasiveness;
Proteasome Endopeptidase Complex;
metabolism;
Stomach Neoplasms
- From:
Journal of Southern Medical University
2019;39(4):387-393
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To study the expression of PSMA7 and its effect on proliferation, invasion and migration of gastric cancer and subcutaneous tumorigenesis in nude mice. >and subcutaneous tumorigenesis in nude mice.
METHODS:Specimens of tumor tissues and paired adjacent tissues were collected from 60 patients with gastric cancer for detecting the expression levels of PSMA7 using immunohistochemical method. Gastric cancer cell line SGC7901 was transfected with a lentiviral vector to inhibit PSMA7 expression, and the changes in cell proliferation and invasion were observed using cell counting kit-8 (CCK-8), clone formation assay and Transwell assay. A BALB/c mouse model bearing subcutaneous gastric cancer xenograft was established using SGC7901 cells with stable PSMA7 knockdown to assess the effect of low expression of PSMA7 on xenograft growth.
RESULTS:Gastric cancer tissues expressed significantly higher levels of PSMA7 than the paired adjacent tissues ( < 0.05). In SGC7901 cells, interference of PSMA7 expression significantly inhibited the cell proliferation and invasion ( < 0.05). In the tumor-bearing BALB/c mice, the xenografts derived from SGC7901 cells with PSMA7 expression interference showed significant growth suppression as compared with the control xenografts ( < 0.05).
CONCLUSIONS:PPSMA 7 is overexpressed in gastric cancer tissues, and PSMA7 knockdown inhibits the proliferation, invasion, migration and subcutaneous tumorigenesis of gastric cancer cells in nude mice.
