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The role of the RNA-binding protein Sam68 in mammary tumourigenesis

Lookup NU author(s): Professor David Elliott, Dr Prabhakar Rajan


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RNA binding protein Sam68 (Src-associated in mitosis 68 kD) is implicated in cell signalling, transcriptional regulation, pre-mRNA splicing, and is overexpressed and/or hyperphosphorylated in breast, prostate, and renal cancers. Sam68 has roles in normal breast development; however, a study by Song eta! published in this issue of The Journal of Pathology reports overexpression of nuclear and cytoplasmic Sam68 protein in a large cohort of clinical breast tumours, implicating Sam68 as a potential prognostic indicator and target for therapy. In breast cancer cells, nuclear Sam68 protein might affect the expression of cancer-relevant genes and/or modulate exon splicing patterns in a dose-dependent manner. Sam68-regulated expression of alternative transcripts may help drive mammary tumourigenesis. The high levels of cytoplasmic Sam68 protein observed in breast cancer cells could also impact on cellular signalling pathways important for mammary tumour cell biology. Copyright (C) 2010 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.

Publication metadata

Author(s): Elliott DJ, Rajan P

Publication type: Editorial

Publication status: Published

Journal: Journal of Pathology

Year: 2010

Volume: 222

Issue: 3

Pages: 223-226

Print publication date: 14/07/2010

ISSN (print): 0022-3417

ISSN (electronic): 1096-9896

Publisher: John Wiley & Sons Ltd.


DOI: 10.1002/path.2753