Single Tumor Cells With Epithelial-Like Morphology Are Associated With Breast Cancer Metastasis

Frontiers in Oncology
Liubov A TashirevaVladimir M Perelmuter

Abstract

Introduction: The identification of tumor cells that can be potential metastatic seeds would reach two key aims-prognosis of metastasis risk and appointment of the optimal adjuvant therapy to prevent metastatic disease. Single tumor cells (STCs) located out of multicellular structures can most likely demonstrate features that are needed to initiate metastasis. Methods: One-hundred-and-thirty-five patients with invasive breast carcinoma of no special type have been enrolled. Molecular subtypes of breast cancer were categorized according to St. Gallen recommendations. Hematoxylin and eosin staining was used to identify STCs with epithelial-like morphology (eSTCs) in breast tumors. Immunofluorescence staining was applied to evaluate stemness and epithelial-mesenchymal transition (EMT) in STCs. The correlation between STCs and recurrence and metastasis-free survival (MFS) was performed using the Kaplan-Meier method and the log-rank test. Results: Distant metastasis was more frequent in eSTC-positive than eSTC-negative patients (28.0% vs. 9.4%, p = 0.007). When tumor types were analyzed separately, distant metastasis tended to be more frequent in eSTC-positive than eSTC-negative patients for HER2-positive cancer [75.0% (3/4) vs. 12....Continue Reading

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Citations

Nov 19, 2020·British Journal of Cancer·Nikita M NovikovEvgeny V Denisov
Feb 9, 2021·Frontiers in Molecular Biosciences·Satyendra Chandra TripathiHerbert Levine

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