Document Detail


MiR-205 determines the radioresistance of human nasopharyngeal carcinoma by directly targeting PTEN.
MedLine Citation:
PMID:  22306986     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Radiotherapy is the primary treatment for nasopharyngeal carcinoma (NPC), but radioresistance severely reduces NPC radiocurability. Here, we have established a radio-resistant NPC cell line, CNE-2R, and investigate the role of miRNAs in radioresistance. The miRNAs microarray assay reveals that miRNAs are differentially expressed between CNE-2R and its parental cell line CNE-2. We find that miR-205 is elevated in CNE-2R. A target prediction algorithm suggests that miR‑205 regulates expression of PTE N, a tumor-suppressor. Introducing miR-205 into CNE-2 cells suppresses PTE N protein expression, followed by activation of AKT, increased number of foci formation and reduction of cell apoptosis postirradiation. On the other hand, knocking down miR-205 in CNE-2R cells compromises the inhibition of PTE N and increases cell apoptosis. Significantly, immunohistochemistry studies demonstrate that PTE N is downregulated at late stages of NPC, and that miR-205 is significantly elevated followed the radiotherapy. Our data conclude that miR-205 contributes to radioresistance of NPC by directly targeting PTE N. Both miR-205 and PTE N are potential predictive biomarkers for radiosensitivity of NPC and may serve as targets for achieve successful radiotherapy in NPC.
Authors:
Changju Qu; Zhihui Liang; Jialing Huang; Ruiying Zhao; Chunhui Su; Sumei Wang; Xudan Wang; Rong Zhang; Mong-Hong Lee; Huiling Yang
Related Documents :
9015266 - Analysis of cell movement and signalling during ring formation in an activated g alpha1...
10198026 - Gliding mutants of myxococcus xanthus with high reversal frequencies and small displace...
4075386 - Orthokinetic and klinokinetic responses of human polymorphonuclear leucocytes.
43286 - Bacterial aggregating activity in human saliva: simultaneous determination of free and ...
8856716 - Trypsin promotes c6 glioma cell proliferation in serum- and growth factor-free medium.
21311236 - A kinase's work is never done: rad53 monitors chromatin near replication origins.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-15
Journal Detail:
Title:  Cell cycle (Georgetown, Tex.)     Volume:  11     ISSN:  1551-4005     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137841     Medline TA:  Cell Cycle     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Pathophysiology; Zhongshan School of Medicine; Sun Yat-sen University; Guangzhou, Chin.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  NER and DDR: Classical music with new instruments.
Next Document:  The aryl hydrocarbon receptor as a promoter of malignant glioma.