期刊
PLOS ONE
卷 9, 期 5, 页码 -出版社
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0097248
关键词
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资金
- Biofocus Research Centre
- Macquarie University
- NHMRC [1010303]
- Cancer Council NSW
Integrin alpha nu beta 6 is highly expressed in a range of human cancers and frequently correlates with patient survival. This study examines correlations between alpha nu beta 6 expression and patient clinico-pathological features in Stage B and Stage C rectal cancer, including overall survival. Expression of alpha nu beta 6 was measured in 362 Stage B or C rectal cancer tissue samples at the tumour central region, invasive tumour front and adjacent non-neoplastic mucosa using immunohistochemistry. Distribution of alpha nu beta 6 was found to be significantly higher at the invasive front compared to central regions of the tumour (p<0.001) or adjacent non-neoplastic mucosa (p<0.001) suggesting alpha nu beta 6 plays a role in tumour cell invasion. However, integrin alpha nu beta 6 expression was not associated with clinico-pathological features or overall survival indicating it is not an independent prognostic marker differentiating Stage B or C rectal cancer. Previous alpha nu beta 6 studies have suggested the expression of alpha nu beta 6 is involved in the earlier stages (i.e. Stages A/B) of tumour progression rather than the later stages (i.e. Stages C/D). However, our study has revealed that in rectal cancer alpha nu beta 6 expression does not increase between Stages B and C, but may occur earlier, namely before or during Stage B cancer.
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