EMP-1 promotes tumorigenesis of NSCLC through PI3K/AKT pathway.
10.1007/s11596-012-1043-1
- Author:
Senyan LAI
1
;
Guihua WANG
;
Xiaonian CAO
;
Zhaoming LI
;
Junbo HU
;
Jing WANG
Author Information
1. Cancer Research Institute, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. nancylailai@gmail.com
- Publication Type:Journal Article
- MeSH:
Carcinogenesis;
metabolism;
pathology;
Carcinoma, Non-Small-Cell Lung;
metabolism;
pathology;
Cell Line, Tumor;
Humans;
Lung Neoplasms;
metabolism;
pathology;
Oligopeptides;
metabolism;
Phosphatidylinositol 3-Kinases;
metabolism;
Proto-Oncogene Proteins c-akt;
metabolism;
Signal Transduction;
physiology
- From:
Journal of Huazhong University of Science and Technology (Medical Sciences)
2012;32(6):834-838
- CountryChina
- Language:English
-
Abstract:
This study examined the role of EMP-1 in tumorigenesis of non-small cell lung carcinoma (NSCLC) and the possible mechanism. Specimens were collected from 28 patients with benign lung diseases and 28 with NSCLC, and immunohistochemically detected to evaluate the correlation of EMP-1 expression to the clinical features of NSCLC. Recombinant adenovirus was constructed to over-express EMP-1 and then infect PC9 cells. Cell proliferation was measured by Ki67 staining. Western blotting was performed to examine the effect of EMP-1 on the PI3K/AKT signaling. Moreover, tumor xenografts were established by subcutaneous injection of PC9 cell suspension (about 5×10(7)/mL in 100 μL of PBS) into the right hind limbs of athymic nude mice. The results showed EMP-1 was significantly up-regulated in NSCLC patients as compared with those with benign lung diseases. Over-expression of EMP-1 promoted proliferation of PC9 cells, which coincided with the activation of the PI3K/AKT pathway. EMP-1 promoted the growth of xenografts of PC9 cells in athymic nude mice. It was concluded that EMP-1 expression may contribute to the development and progress of NSCLC by activating PI3K/AKT pathway.
