Increasing expression of hypoxia-inducible proteins in the Barrett's metaplasia-dysplasia-adenocarcinoma sequence.
AuthorsGriffiths, Ewen A
Pritchard, S A
McGrath, S M
Valentine, Helen R
Price, Patricia M
Welch, I M
West, Catharine M L
AffiliationAcademic Radiation Oncology, Division of Cancer Studies, Christie Hospital, The University of Manchester, Wilmslow Road, Withington, Manchester M20 4BX, UK.
MetadataShow full item record
AbstractHypoxia-associated markers are involved in the progression of several malignancies, but are relatively unstudied in Barrett's carcinogenesis. Our aim was to assess the immunohistochemical expression of hypoxia-inducible factor (HIF)-1alpha, HIF-2alpha, erythropoietin (Epo), Epo receptor (Epo-R), Glut-1 and vascular endothelial growth factor (VEGF) along with Ki67/MIB-1 in the Barrett's metaplasia-dysplasia-adenocarcinoma sequence. Endoscopic biopsies of normal squamous epithelium (NSE) (n=20), columnar-lined oesophagus (CLO) (n=15), CLO with intestinal metaplasia (n=20), dysplasia (n=17) and Barrett's type adenocarcinoma (n=20) were obtained. Immunohistochemistry was performed on the paraffin-embedded tissue. A score was calculated for each marker (range 0-300) by multiplying intensity (none 0, weak 1, moderate 2, strong 3) by percentage of expression (range 0-100). Significant increases in the expression of HIF-2alpha (P=0.014), VEGF (P<0.0001), Epo-R (P<0.0001) and Ki67 (P<0.0001) were found as tissue progressed from NSE to adenocarcinoma. HIF-2alpha was expressed late in the sequence and was only seen in dysplasia and adenocarcinoma. High HIF-2alpha expression was seen in 12 out of 20 Barrett's type adenocarcinoma. The late expression of HIF-2alpha in the Barrett's carcinogenesis sequence and its high expression in adenocarcinoma suggest that it is worth further investigation as a marker of disease progression and therapeutic target.
CitationIncreasing expression of hypoxia-inducible proteins in the Barrett's metaplasia-dysplasia-adenocarcinoma sequence. 2007, 96 (9):1377-83 Br. J. Cancer
JournalBritish Journal of Cancer
- Transforming growth factor-alpha, epidermal growth factor receptor, and MiB-1 expression in Barrett's-associated neoplasia: correlation with prognosis.
- Authors: Yacoub L, Goldman H, Odze RD
- Issue date: 1997 Feb
- Proinflammatory cytokine and nuclear factor kappa-B expression along the inflammation-metaplasia-dysplasia-adenocarcinoma sequence in the esophagus.
- Authors: O'Riordan JM, Abdel-latif MM, Ravi N, McNamara D, Byrne PJ, McDonald GS, Keeling PW, Kelleher D, Reynolds JV
- Issue date: 2005 Jun
- Dedifferentiation precedes invasion in the progression from Barrett's metaplasia to esophageal adenocarcinoma.
- Authors: Helm J, Enkemann SA, Coppola D, Barthel JS, Kelley ST, Yeatman TJ
- Issue date: 2005 Apr 1
- Progression of Barrett's metaplasia to adenocarcinoma is associated with the suppression of the transcriptional programs of epidermal differentiation.
- Authors: Kimchi ET, Posner MC, Park JO, Darga TE, Kocherginsky M, Karrison T, Hart J, Smith KD, Mezhir JJ, Weichselbaum RR, Khodarev NN
- Issue date: 2005 Apr 15
- Activation of Wnt signalling promotes development of dysplasia in Barrett's oesophagus.
- Authors: Moyes LH, McEwan H, Radulescu S, Pawlikowski J, Lamm CG, Nixon C, Sansom OJ, Going JJ, Fullarton GM, Adams PD
- Issue date: 2012 Sep