Airley, RE and McHugh, P and Evans, AR and Harris, B and Winchester, L and Buffa, FM and Al-Tameemi, W and Leek, R and Harris, AL (2014) Role of carbohydrate response element-binding protein (ChREBP) in generating an aerobic metabolic phenotype and in breast cancer progression. BRITISH JOURNAL OF CANCER, 110 (3). pp. 715-723. ISSN 0007-0920
Role of carbohydrate response element-binding protein (ChREBP) in generating an aerobic metabolic phenotype and in breast cancer progression..pdf - Published Version
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Background: The lipogenic transcription factor carbohydrate response element-binding protein (ChREBP) may play a key role in malignant progression of breast cancer by allowing metabolic adaptations to take place in response to changes in oxygenation.
Methods: Immunohistochemical analysis of ChREBP was carried out in human breast tumour tissue microarrays representative of malignant progression from normal breast through to metastatic cancer. The ChREBP protein and mRNA expressions were then analysed in a series of breast cancers for correlative analysis with common and breast-specific hypoxia signatures, and survival.
Results: In invasive ductal carcinoma, ChREBP correlated significantly with mean ‘downregulated’ hypoxia scores (r¼0.3, Po0.015, n¼67) and in two distinct breast progression arrays, ChREBP protein also increased with malignant progression (Po0.001). However, bioinformatic analysis of a large data set (2136 cases) revealed an apparent reversal in the relationship between ChREBP mRNA level and clinical outcome – not only being significantly correlated with increased survival (log rank Po0.001), but also downregulated in malignant tissue compared with adjacent normal tissue.
Conclusion: The ChREBP expression may be reflective of an aerobic metabolic phenotype that may conflict with hypoxia-induced signalling but provide a mechanism for growth at the oxygenated edge of the tumours.
|Additional Information:||Copyright Cancer Research UK|
|Uncontrolled Keywords:||1112 Oncology And Carcinogenesis|
|Subjects:||R Medicine > RC Internal medicine > RC0254 Neoplasms. Tumors. Oncology (including Cancer)|
|Divisions:||Pharmacy & Biomolecular Sciences|
|Publisher:||NATURE PUBLISHING GROUP|
|Date Deposited:||12 Jun 2015 10:05|
|Last Modified:||12 Jun 2015 10:05|
|DOI or Identification number:||10.1038/bjc.2013.765|
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- Role of carbohydrate response element-binding protein (ChREBP) in generating an aerobic metabolic phenotype and in breast cancer progression. (deposited 12 Jun 2015 10:05) [Currently Displayed]
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