Document Detail

Galangin inhibits growth of human head and neck squamous carcinoma cells in vitro and in vivo.
MedLine Citation:
PMID:  25450235     Owner:  NLM     Status:  Publisher    
Galangin, an active flavonoid component extracted from the propolis and root of Alpinia officinarum Hance, has anti-tumor activity, but the mechanisms by which galangin affects various cancers, including human head and neck squamous cell carcinoma (HNSCC) remain unclear. In this study, we demonstrated for the first time that galangin suppressed the growth of HNSCC in vivo. With the cell culture system, galangin inhibited the proliferation and colony formation of HNSCC cells in a dose-dependent manner. Galangin induced significant cell cycle arrest of the tumor cells at the G0/G1 phase, which was accompanied by reduced AKT phosphorylation and mammalian target of rapamycin and S6 kinase activation. Decreased expression of cyclin D1, cyclin-dependent kinase (CDK)4, CDK6 and phosphorylation of retinoblastoma protein was observed in galangin-treated HNSCC cells. In addition, galangin induced apoptosis of HNSCC cells, downregulating antiapoptotic protein Bcl-2 and Bcl-xL and upregulating proapoptotic protein Bax and cleaved caspase 3. Immunohistochemical analysis showed a dose-dependent reduction in cyclin-D1-positive cancer cells and an increase in TUNEL-positive cancer cells in galangin-administrated mouse tumor sections. Therefore, galangin may be a novel therapeutic option in human HNSCC treatment.
Liping Zhu; Qingqiong Luo; Jianjun Bi; Jieying Ding; Shengfang Ge; Fuxiang Chen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-11-4
Journal Detail:
Title:  Chemico-biological interactions     Volume:  224C     ISSN:  1872-7786     ISO Abbreviation:  Chem. Biol. Interact.     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-12-2     Completed Date:  -     Revised Date:  2014-12-3    
Medline Journal Info:
Nlm Unique ID:  0227276     Medline TA:  Chem Biol Interact     Country:  -    
Other Details:
Languages:  ENG     Pagination:  149-156     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.
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