MMP7 modulation by short- and long-term radiotherapy in patients with rectal cancer

Research output: Contribution to journalArticle

Abstract

Background/Aim: Matrix metalloproteinase 7 (MMP7) expression is highly associated with colorectal cancer and modulates tumour growth and invasion. Radiation injury induces inflammation with increases in MMP7 and in transforming growth factor beta (TGFβ). The aim of this study was to investigate the effect on MMP7 and TGFβ. expression in patients with rectal cancer undergoing different regimens of neoadjuvant radiotherapy (RT). Patients and Methods: We studied 53 patients in three RT treatment groups receiving RT of 25 Gy, long-term RT 50 Gy and controls receiving no RT. Three biopsies were obtained from each patient during the treatments: before RT, after RT and after surgery. Tissue samples were formalin fixed, paraffin embedded and tissue microarrays were constructed and stained for MMP7 and TGFβ. Mann–Whitney U-tests and Wilcoxon Z-tests were used to determine differences between patients before and after RT, and after surgery, as well as between the RT groups. Results: In all three patient groups, increases of MMP7 and TGFβ expression were observed after surgery. MMP7 expression was significantly increased in patients receiving short-term RT but TGFβ expression was not affected by RT. Conclusion: 50 Gy Irradiation of rectal cancer gives less tumour activation of MMP7, whilst it is up-regulated by 25 Gy and surgery regardless of RT.

Details

Authors
Organisations
External organisations
  • Skåne University Hospital
  • University of Perugia
  • Ospedale Santa Maria della Misericordia
  • Lund University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Surgery
  • Cancer and Oncology

Keywords

  • Inflammation, Matrilysin, Matrix metalloproteinases, Radiotherapy, Rectal cancer
Original languageEnglish
Pages (from-to)133-138
Number of pages6
JournalIn Vivo
Volume32
Issue number1
Publication statusPublished - 2018 Jan 1
Publication categoryResearch
Peer-reviewedYes