E-TABM-419 - Transcription profiling of human breast stroma and epithelium after curative radiotherapy to investigate the pathogenesis of late radiation injury in humans
Submitted on 12 February 2008, released on 12 August 2008, last updated on 2 May 2014
Gene expression profiling of normal tissues after curative radiotherapy was carried out to investigate the pathogenesis of late radiation injury in humans. Irradiated and control normal breast tissue was collected from patients undergoing bilateral mastectomy for ipsilateral tumour relapse or prophylaxis following radiotherapy for breast cancer. Using P.A.L.M. laser capture microdissection (LCM) of frozen sections, breast tissue was separated into an epithelial compartment (terminal duct lobular units and ducts) and a stromal compartment (remaining tissue). RNA was extracted, amplified and hybridised to a 20k cDNA array against a breast tissue reference RNA. Expression profiles of irradiated vs control breast were compared for each tissue compartment
transcription profiling by array, co-expression, dye swap, ex vivo, organism part comparison, reference
Genome-wide transcriptomic profiling of microdissected human breast tissue reveals differential expression of KIT (c-Kit, CD117) and oestrogen receptor-alpha (ERalpha) in response to therapeutic radiation. Westbury CB, Reis-Filho JS, Dexter T, Mahler-Araujo B, Fenwick K, Iravani M, Grigoriadis A, Parry S, Robertson D, Mackay A, Ashworth A, Yarnold JR, Isacke CM.