Elevated mRNA expression of CHAC1 splicing variants is associated with poor outcome for breast and ovarian cancer patients View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2012-01

AUTHORS

G Goebel, R Berger, A M Strasak, D Egle, E Müller-Holzner, S Schmidt, J Rainer, E Presul, W Parson, S Lang, A Jones, M Widschwendter, H Fiegl

ABSTRACT

BACKGROUND: The role of CHAC1 (cation transport regulator-like protein 1), a recently identified component of the unfolded protein response (UPR) pathway, in gynaecological cancers has not yet been characterised. Now, this work illustrates CHAC1 mRNA expression and associated clinical outcome in breast and ovarian cancer. METHODS: The prognostic value of CHAC1 and its two transcript variants was investigated in 116 breast and 133 ovarian tissues using quantitative real-time reverse-transcriptase PCR. Subsequently, we conducted functional studies using short-interfering RNA-mediated knockdown and plasmid-mediated overexpression of CHAC1 in breast and ovarian cancer cells. RESULTS: Poorly differentiated tumours exhibited higher CHAC1 mRNA expression (breast cancer: P=0.004; ovarian cancer: P=0.024). Hormone receptor-negative breast tumours and advanced-staged ovarian cancers demonstrated elevated CHAC1 mRNA expression levels (P<0.001 and P=0.026, respectively). The multivariate survival analysis showed a prognostic value of both transcript variants in breast cancer (transcript variant 1: RR(death) 6.7 (2.4-18.9); P<0.001), RR(relapse) 6.7 (2.1-21.3); P=0.001); (transcript variant 2: RR(death) 4.9 (2.0-12.4); P<0.001), RR(relapse) 8.0 (2.4-26.8); P<0.001). Ovarian cancer patients aged younger than 62.6 years with high CHAC1 mRNA expression showed poorer relapse-free- and overall-survival (P=0.030 and P=0.012, respectively). In functional studies CHAC1 knockdown suppressed cell migration, whereas ectopic overexpression opposed these effects. CONCLUSION: High CHAC1 mRNA expression could be an independent indicator for elevated risk of cancer recurrence in breast and ovarian cancer. More... »

PAGES

189

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/bjc.2011.510

DOI

http://dx.doi.org/10.1038/bjc.2011.510

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1044016427

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/22108517


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HOW TO GET THIS DATA PROGRAMMATICALLY:

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curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1038/bjc.2011.510'

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Turtle is a human-readable linked data format.

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RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1038/bjc.2011.510'


 

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