Document Detail


Rab3a promotes brain tumor initiation and progression.
MedLine Citation:
PMID:  24965146     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The Rab protein family is composed of small GTP-binding proteins involved in intracellular vesicle trafficking. In particular, Rab3a which is one of four Rab3 proteins (a, b, c, and d isoforms) is associated with synaptic vesicle trafficking in normal brain. However, despite the elevated level of Rab3a in tumors, its role remains unclear. Here we report a tumorigenic role of Rab3a in brain tumors. Elevated level of Rab3a expression in human was confirmed in both glioma cell lines and glioblastoma multiforme patient specimens. Ectopic Rab3a expression in glioma cell lines and primary astrocytes promoted cell proliferation by increasing cyclin D1 expression, induced resistance to anti-cancer drug and irradiation, and accelerated foci formation in soft agar and tumor formation in nude mice. The overexpression of Rab3a augmented the tumorsphere-forming ability of glioma cells and p53(-/-) astrocytes and increased expression levels of various stem cell markers. Taken together, our results indicate that Rab3a is a novel oncogene involved in glioma initiation and progression.
Authors:
Jun-Kyum Kim; Seung-Yup Lee; Chang-Won Park; Suk-Hwang Park; Jinlong Yin; Jaebong Kim; Jae-Bong Park; Jae-Yong Lee; Hyunggee Kim; Sung-Chan Kim
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-6-26
Journal Detail:
Title:  Molecular biology reports     Volume:  -     ISSN:  1573-4978     ISO Abbreviation:  Mol. Biol. Rep.     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-6-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0403234     Medline TA:  Mol Biol Rep     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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