Expression of SDF‑1 and CXCR4 transcript variants and CXCR7 in epithelial ovarian cancer

  • Authors:
    • Karolina Jaszczynska‑Nowinka
    • Marcin Rucinski
    • Agnieszka Ziolkowska
    • Anna Markowska
    • Ludwik K. Malendowicz
  • View Affiliations

  • Published online on: February 20, 2014     https://doi.org/10.3892/ol.2014.1897
  • Pages: 1618-1624
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Abstract

Chemokine stromal cell‑derived factor‑1 (SDF‑1) and its receptors, CXCR4 and CXCR7, have been implicated in epithelial ovarian cancer progression and metastasis. However, limited data are available on the expression levels of SDF‑1 and CXCR4 variants and CXCR7 in human epithelial ovarian cancer. The present study aimed to characterize the expression pattern and levels of SDF‑1, CXCR4 and CXCR7 in normal human ovaries and epithelial ovarian cancer. The expression of SDF‑1 and CXCR4 transcript variants and CXCR7 was determined by quantitative polymerase chain reaction (qPCR). Plasma SDF‑1α levels were determined by commercially available EIA kits and cancer antigen 125 (CA 125) levels were quantified by automated microparticle enzyme immunosorbent assay. High expression levels of SDF‑1 transcript variant 1 were identified in ovarian cancer and control ovaries. By contrast, in both groups the expression levels of SDF‑1 transcript variants 3 and 4 were extremely low. Furthermore, SDF‑1 variant 1 levels were notably higher in epithelial ovarian cancer than in control ovaries, while data for the remaining transcripts were similar in both groups. CXCR4 transcript variant 2 and CXCR7 expression levels in normal and neoplastic ovaries were similar. In both groups, CXCR4 transcript variant 2 was not detected. Plasma SDF‑1α levels were notably higher in females with epithelial ovarian cancer than in the control ovaries. Elevated levels of blood SDF‑1α were found prior to surgery, 6 days after surgery and following completion of the first chemotherapy course. These increases were independent of the type of epithelial ovarian cancer. Our results suggest that the expression of SDF‑1 and the genes controlling alternative splicing are elevated in epithelial ovarian cancer, leading to an increased formation of SDF‑1 variant 1. Elevated plasma SDF‑1α levels in epithelial ovarian cancer patients are not associated with the presence of tumors and/or metastases, however reflect a general response to the disease.
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May 2014
Volume 7 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

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APA
Jaszczynska‑Nowinka, K., Rucinski, M., Ziolkowska, A., Markowska, A., & Malendowicz, L.K. (2014). Expression of SDF‑1 and CXCR4 transcript variants and CXCR7 in epithelial ovarian cancer. Oncology Letters, 7, 1618-1624. https://doi.org/10.3892/ol.2014.1897
MLA
Jaszczynska‑Nowinka, K., Rucinski, M., Ziolkowska, A., Markowska, A., Malendowicz, L. K."Expression of SDF‑1 and CXCR4 transcript variants and CXCR7 in epithelial ovarian cancer". Oncology Letters 7.5 (2014): 1618-1624.
Chicago
Jaszczynska‑Nowinka, K., Rucinski, M., Ziolkowska, A., Markowska, A., Malendowicz, L. K."Expression of SDF‑1 and CXCR4 transcript variants and CXCR7 in epithelial ovarian cancer". Oncology Letters 7, no. 5 (2014): 1618-1624. https://doi.org/10.3892/ol.2014.1897