PGF isoforms, PLGF-1 and PGF-2 and the PGF receptor, neuropilin, in human breast cancer: prognostic significance

Escudero-Esparza, Astrid, Martin, Tracey Amanda ORCID: https://orcid.org/0000-0003-2690-4908, Douglas-Jones, Anthony, Mansel, Robert Edward ORCID: https://orcid.org/0000-0002-8051-0726 and Jiang, Wen Guo ORCID: https://orcid.org/0000-0002-3283-1111 2010. PGF isoforms, PLGF-1 and PGF-2 and the PGF receptor, neuropilin, in human breast cancer: prognostic significance. Oncology Reports 23 (2) , pp. 537-544. 10.3892/or_00000667

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Abstract

Placenta growth factor (PLGF) is a member of the vascular endothelial growth factor (VEGF) family, a group of angiogenic growth factors. Recently, isoforms have been identified. This study examined PLGF-1, PGF-2 and its receptor neuropilin-1 levels in human breast cancer in relation to patient's clinical parameters and how changes in expression may be linked to prognosis of the disease. PLGF-1, PGF-2 and neuropilin-1 transcript expression and distribution were examined quantitatively using real-time quantitative polymerase chain reaction (Q-PCR) on a cohort of human breast cancer (n=114) and background breast tissue (n=30) with a 10-year follow-up. Protein expression was assessed by an immunohistochemical method. We demonstrate that PLGF-1 transcript levels were significantly elevated when comparing tumours from patients with poor outcome and patients who remained disease-free (P=0.03), indicating a potential prognostic value. Immunohistochemistry demonstrated a marked increased in PGF-2 expression in tumour section compared with normal tissues (P<0.05). PGF-2 transcripts, showed little change in expression between tumour and background. High levels of PLGF-1 and PGF-2 were seen in ERβ-negative breast tumour tissues. Neuropilin transcript was below detection in substantial portion of the samples and was more frequently detected in high grade tumours (P=0.008 vs. low grade) and in tumours from patients who died of breast cancer (P<0.001 vs. those who remained disease-free). Our study shows that PLGF isoforms PLGF-1 and PGF-2 and indeed their receptor neuopilin, have an aberrant pattern of expression and that high levels of the PLGF-1 and neuropilin are linked to a poor prognosis.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine
Subjects:	R Medicine > RC Internal medicine > RC0254 Neoplasms. Tumors. Oncology (including Cancer)
Additional Information:	Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/1021-335X/ (accessed 20/02/2014).
Publisher:	Spandidos Publications
ISSN:	1021-335X
Date of First Compliant Deposit:	30 March 2016
Last Modified:	03 May 2023 22:13
URI:	https://orca.cardiff.ac.uk/id/eprint/29581

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