Characterization of circulating tumor cells in newly diagnosed breast cancer

  • Authors:
    • Lu Xu
    • Songlin Jia
    • Hengyu Li
    • Yue Yu
    • Guoping Liu
    • Yanmei Wu
    • Xishui Liu
    • Chaoqian Liu
    • Yue Zhou
    • Zhenzhen Zhang
    • Yuan Sheng
  • View Affiliations

  • Published online on: December 6, 2017     https://doi.org/10.3892/ol.2017.7540
  • Pages:2522-2528
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Abstract

Identification of circulating tumor cells (CTCs) by surface marker expression and ploidy analysis [immunostaining‑fluorescence in situ hybridization (iFISH)] has been shown to be a highly sensitive method in the identification of certain solid cancers. In the present study, iFISH analysis was performed to identify CTCs in 184 patients with newly diagnosed non‑metastatic breast cancer, and the distribution of CTC subtypes was characterized based on cytokeratin (CK) expression and ploidy status. It was revealed that CTCs of non‑metastatic, aneuploid breast cancers, independent of CK expression profile, can be detected with high sensitivity (90.76%) by the iFISH system. Higher CTC counts and sensitivity were observed in patients with increased tumor size burden and unfavorable hormone receptor status. Investigation of CTC subtypes based on ploidy analysis indicated that triploid CTCs constituted the majority of CTCs evaluated. While CK‑positive CTCs were detected in a small cohort of patients, an overall low rate of CK expression was observed in the 18 patient samples evaluated. Of note, CK expression was rare in CTCs detected in patients with Herceptin 2 (Her2)‑positive or triple‑negative [estrogen receptor (ER)‑, progesterone receptor (PR)‑ and Her2‑negative], indicating that lack of ER and PR may result in promotion of epithelial‑mesenchymal transition and enhancement of tumor aggression.

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February 2018
Volume 15 Issue 2

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

2016 Impact Factor: 1.39
Ranked #68/217 Oncology
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APA
Xu, L., Jia, S., Li, H., Yu, Y., Liu, G., Wu, Y. ... Sheng, Y. (2018). Characterization of circulating tumor cells in newly diagnosed breast cancer. Oncology Letters, 15, 2522-2528. https://doi.org/10.3892/ol.2017.7540
MLA
Xu, L., Jia, S., Li, H., Yu, Y., Liu, G., Wu, Y., Liu, X., Liu, C., Zhou, Y., Zhang, Z., Sheng, Y."Characterization of circulating tumor cells in newly diagnosed breast cancer". Oncology Letters 15.2 (2018): 2522-2528.
Chicago
Xu, L., Jia, S., Li, H., Yu, Y., Liu, G., Wu, Y., Liu, X., Liu, C., Zhou, Y., Zhang, Z., Sheng, Y."Characterization of circulating tumor cells in newly diagnosed breast cancer". Oncology Letters 15, no. 2 (2018): 2522-2528. https://doi.org/10.3892/ol.2017.7540