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Combinatorial use of bone morphogenetic protein 6, noggin and SOST significantly predicts cancer progression.

Authors: Yuen, HF  McCrudden, CM  Grills, C  Zhang, SD  Huang, YH  Chan, KK  Chan, YP  Wong, ML  Law, S  Srivastava, G  Fennell, DA  Dickson, G  El-Tanani, M  Chan, KW 
Citation: Yuen HF, etal., Cancer Sci. 2012 Jun;103(6):1145-54. doi: 10.1111/j.1349-7006.2012.02252.x. Epub 2012 Apr 3.
Pubmed: (View Article at PubMed) PMID:22364398
DOI: Full-text: DOI:10.1111/j.1349-7006.2012.02252.x

Emerging evidence has indicated a role of the bone morphogenetic proteins (BMP) in the pathogenesis of certain cancers. The signaling of BMP family members is tightly regulated by their antagonists, including noggin and SOST, which are, in turn, positively regulated by BMP, thereby forming a negative feedback loop. Consequently, the expression of these antagonists should be taken into account in studies on the prognostic significance of BMP. In the present paper, we correlated protein and mRNA expression levels of BMP6, noggin and SOST, alone or in combination, with patient survival in various types of cancer. We found that BMP6 alone was not significantly correlated with esophageal squamous cell carcinoma patient survival. Instead, a high level of inhibitor of differentiation 1, a downstream factor of BMP6, was associated with shorter survival in patients whose tumors stained strongly for BMP6. Knockdown of noggin in esophageal cancer cell line EC109, which expresses BMP6 strongly and SOST weakly, enhanced the non-adherent growth of the cells. Noggin and SOST expression levels, when analyzed alone, were not significantly correlated with patient survival. However, high BMP6 activity, defined by strong BMP6 expression coupled with weak noggin or SOST expression, was significantly associated with shorter survival in esophageal squamous cell carcinoma patients. We further confirmed that BMP6 activity could be used as a prognostic indicator in prostate, bladder and colorectal cancers, using publicly available data on BMP6, noggin and SOST mRNA expression and patient survival. Our results strongly suggest that BMP6, noggin and SOST could be used in combination as a prognostic indicator in cancer progression.

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RGD ID: 7242413
Created: 2013-04-04
Species: All species
Last Modified: 2013-04-04
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.