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BMI1'S maintenance of the proliferative capacity of laryngeal cancer stem cells.
MedLine Citation:
PMID:  21136546     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: In laryngeal squamous cell carcinoma (SCC), CD133+ cells were found to display cancer stem cell (CSC) characteristics. BMI1 is an oncogene that plays key roles in proliferation in CSCs. However, no published reports have examined the role of BMI1 in laryngeal CSCs. METHODS: Immunofluorescence staining confirmed the coexpression of BMI1 and CD133. After sorting, real-time polymerase chain reaction (PCR) revealed BMI1 was differentially expressed in CD133+ cells. BMI1 was knocked down and proliferation, colony formation, and apoptosis assays were performed. The influence on CD133+ cells was determined by flow cytometry, sphere-formation assay, and quantitative PCR. Tumorigenicity assays were performed, and the impact on related genes was evaluated. RESULTS: BMI1 was highly enriched in CD133+ cells. BMI1 maintained CD133+ cell proliferation and prevented apoptosis. Gene expression analysis suggested BMI1 regulated alternate cellular pathways. CONCLUSION: BMI1 was required to maintain the proliferative capacity of laryngeal CSCs, which may be a molecular target to cure patients with laryngeal SCC. © 2010 Wiley Periodicals, Inc. Head Neck, 2010.
Authors:
Hui Chen; Liang Zhou; Tonghai Dou; Guanglun Wan; Huiqing Tang; Jie Tian
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-12-6
Journal Detail:
Title:  Head & neck     Volume:  -     ISSN:  1097-0347     ISO Abbreviation:  -     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8902541     Medline TA:  Head Neck     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Otolaryngology-Head and Neck Surgery, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, China.
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