Altered Sirtuin Expression is Associated with Node-positive Breast Cancer

Overview

Journal Br J Cancer

Specialty Oncology

Date 2006 Sep 28

PMID 17003781

Citations 112

Authors

N Ashraf

S Zino

A MacIntyre

D Kingsmore

A P Payne

W D George

P G Shiels

Affiliations

Soon will be listed here.

Abstract

Sirtuins are genes implicated in cellular and organismal ageing. Consequently, they are speculated to be involved in diseases of ageing including cancer. Various cancers with widely differing prognosis have been shown to have differing and characteristic expression of these genes; however, the relationship between sirtuin expression and cancer progression is unclear. In order to correlate cancer progression and sirtuin expression, we have assessed sirtuin expression as a function of primary cell ageing and compared sirtuin expression in normal, 'nonmalignant' breast biopsies to breast cancer biopsies using real-time polymerase chain reaction (PCR). Levels of SIRT7 expression were significantly increased in breast cancer (P<0.0001). Increased levels of SIRT3 and SIRT7 transcription were also associated with node-positive breast cancer (P<0.05 and P<0.0001, respectively). This study has demonstrated differential sirtuin expression between nonmalignant and malignant breast tissue, with consequent diagnostic and therapeutic implications.

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