Abstract:
:The insulin-like growth factors (IGFs) are a family of mitogenic proteins involved in the regulation of cell growth and differentiation. The presence and role of the IGF system in oral mucosal epithelium is not clear but could influence our understanding of the pathogenesis of oral cancer. We characterised the expression and function of IGF-1, IGF-2 and IGF receptor in human oral squamous carcinoma cell lines and normal oral epithelial cells as well as normal oral and squamous cell carcinoma tissues. Using reverse transcription followed by PCR, IGF-1 mRNA was only detected in normal cells, whereas IGF-2 and IGF-1R mRNA transcripts were highly expressed in tumour cell lines and tissues. Similar observations were seen by Western blot analysis and immunohistochemistry. Exogenous IGF-2, but not IGF-1, caused significant increases in DNA synthesis in the cell lines. IGF-2 also increased cell proliferation which was significantly attenuated in the presence of an IGF-2 neutralizing antibody or one which blocked IGF-1R. Taken together, these studies suggest that autocrine production of IGF-2, together with over-expression of IGF-1R, may be important components controlling the proliferation of oral carcinoma cells.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Brady G,Crean SJ,Naik P,Kapas Ssubject
Has Abstractpub_date
2007-10-01 00:00:00pages
875-81issue
4eissn
1019-6439issn
1791-2423journal_volume
31pub_type
杂志文章abstract::The p16INK4a tumor suppressor gene is frequently inactivated in nasopharyngeal carcinoma (NPC) and hence it may play an important role in the suppression of this tumor. In order to study the effect of p16INK4a restoration in NPC cells, full-length human p16INK4a gene was transfected into a NPC cell line, CNE1. Four in...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2000-07-01 00:00:00
abstract::Following the publication of this article, the authors noted that there was an error in Fig. 4. The lines representing the two groups were indicated incorrectly in all graphs in Fig. 4. A corrected version of Fig. 4 is presented below. Furthermore, we regret any inconvenience this error may have caused. [the original ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2016.3796
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journal_title:International journal of oncology
pub_type: 杂志文章
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2020.5098
更新日期:2020-09-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
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journal_title:International journal of oncology
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pub_type: 杂志文章
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更新日期:2001-10-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:1996-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:2011-03-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2004-12-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-11-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.1774
更新日期:2013-03-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-05-01 00:00:00
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pub_type: 杂志文章
doi:10.3892/ijo.16.6.1159
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-04-01 00:00:00
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更新日期:2009-10-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章,评审
doi:10.3892/ijo.23.4.1095
更新日期:2003-10-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-04-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
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journal_title:International journal of oncology
pub_type: 杂志文章
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journal_title:International journal of oncology
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journal_title:International journal of oncology
pub_type: 杂志文章
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journal_title:International journal of oncology
pub_type: 杂志文章
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journal_title:International journal of oncology
pub_type: 杂志文章
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更新日期:2015-03-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
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更新日期:2019-11-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-01-01 00:00:00
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