Abstract:
:SOX9 is a transcription factor that plays a critical role in the development of multiple tissues. We previously reported that SOX9 in normal human adult prostate was restricted to basal epithelium. SOX9 was also expressed in a subset of prostate cancer (PCa) cells and was increased in relapsed hormone-refractory PCa. Moreover, SOX9 expression in PCa cell lines enhanced tumor cell proliferation and was beta-catenin regulated. Here we report additional in vivo results showing that SOX9 is highly expressed during fetal prostate development by epithelial cells expanding into the mesenchyme, suggesting it may contribute to invasive growth in PCa. Indeed, SOX9 overexpression in LNCaP PCa xenografts enhanced growth, angiogenesis, and invasion. Conversely, short hairpin RNA-mediated SOX9 suppression inhibited the growth of CWR22Rv1 PCa xenografts. These results support important functions of SOX9 in both the development and maintenance of normal prostate, and indicate that these functions contribute to PCa tumor growth and invasion.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Wang H,Leav I,Ibaragi S,Wegner M,Hu GF,Lu ML,Balk SP,Yuan Xdoi
10.1158/0008-5472.CAN-07-5915subject
Has Abstractpub_date
2008-03-15 00:00:00pages
1625-30issue
6eissn
0008-5472issn
1538-7445pii
68/6/1625journal_volume
68pub_type
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