Inhibition of LRIG3 gene expression via RNA interference modulates the proliferation, cell cycle, cell apoptosis, adhesion and invasion of glioblastoma cell (GL15).
LRIG3 (leucine-rich repeats and immunoglobulin-like domains, LRIG) gene is both under-and over-expressed in human cancers and its role on tumor growth is not fully clarified. Here, we used a human U6 promoter-driven DNA template approach to induce short hairpin RNA (shRNA)-triggered RNA interference (RNAi) to block LRIG3 gene expression in the human glioma cell line GL15. Specific knockdown of LRIG3 by shRNA resulted in significantly increase of the GL15 invasion and adhesion activity in vitro and markedly promoted cell growth. LRIG3 repression also induced increment of the proportion of G0/G1 cells and inhibited apoptosis in GL15 cells. Our results demonstrated that RNAi against LRIG3 could effectively down regulate LRIG3 gene expression. LRIG3 might be involved in the regulation of EGFR signaling, and serve as a tumor suppressor gene in the pathogenesis of glioma.
Cai
Mingjun
M
Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Anv, Wuhan, Hubei 430030, PR China.
Han
Lin
L
Chen
Rudong
R
Ye
Fei
F
Wang
Baofeng
B
Han
Fuxin
F
Lei
Ting
T
Guo
Dongsheng
D
D017209:Apoptosis / Q000235:genetics; D002448:Cell Adhesion; D002453:Cell Cycle / Q000235:genetics; D002455:Cell Division / Q000235:genetics; D045744:Cell Line, Tumor; D016543:Central Nervous System Neoplasms / Q000235:genetics* / Q000473:pathology; D066246:ErbB Receptors / Q000502:physiology; D005909:Glioblastoma / Q000235:genetics / Q000473:pathology; D005910:Glioma / Q000235:genetics* / Q000473:pathology; D006801:Humans; D008565:Membrane Proteins / Q000235:genetics*; D009361:Neoplasm Invasiveness; D011401:Promoter Regions, Genetic; D034622:RNA Interference; D012334:RNA, Neoplasm / Q000235:genetics; D015398:Signal Transduction / Q000235:genetics
C496406:LRIG3 protein, human; D008565:Membrane Proteins; D012334:RNA, Neoplasm; D066246:ErbB Receptors