MiR-205-5p Downregulation and Upregulation Characterize the Disseminated Tumor Cells in Patients with Invasive Ductal Breast Cancer
Overview
Chemistry
Molecular Biology
Authors
Affiliations
Background: Dissemination of breast cancer (BC) cells through the hematogenous or lymphogenous vessels leads to metastatic disease in one-third of BC patients. Therefore, we investigated the new prognostic features for invasion and metastasis.
Methods: We evaluated the expression of miRNAs and epithelial-to-mesenchymal transition (EMT) genes in relation to /E-cadherin changes in samples from 31 patients with invasive ductal BC including tumor centrum (TU-C), tumor invasive front (TU-IF), lymph node metastasis (LNM), and CD45-depleted blood (CD45-DB). Expression of miRNA and mRNA was quantified by RT-PCR arrays and associations with clinico-pathological characteristics were statistically evaluated by univariate and multivariate analysis.
Results: We did not verify regulating associations previously described in cell lines. However, we did detect extremely high expression in LNMs from patients with distant metastasis, but without regulation by miR-205-5p. Considering the ZEB1 functions, this overexpression indicates enhancement of metastatic potential of lymphogenously disseminated BC cells. In CD45-DB samples, downregulated miR-205-5p was found in those expressing epithelial and/or mesenchymal markers (CTC+) that could contribute to insusceptibility and survival of hematogenously disseminated BC cells mediated by increased expression of several targets including .
Conclusions: miR-205-5p and potentially gene are promising candidates for markers of metastatic potential in ductal BC.
Qiu J, Qian D, Jiang Y, Meng L, Huang L Front Oncol. 2023; 13:1288077.
PMID: 37941557 PMC: 10628786. DOI: 10.3389/fonc.2023.1288077.
Circulating microRNAs for Early Diagnosis of Ovarian Cancer: A Systematic Review and Meta-Analysis.
Frisk N, Sorensen A, Pedersen O, Dalgaard L Biomolecules. 2023; 13(5).
PMID: 37238740 PMC: 10216356. DOI: 10.3390/biom13050871.
Smolkova B, Earl J, Kataki A Int J Mol Sci. 2022; 23(24).
PMID: 36555088 PMC: 9778637. DOI: 10.3390/ijms232415446.
Fridrichova I, Kalinkova L, Ciernikova S Int J Mol Sci. 2022; 23(20).
PMID: 36292996 PMC: 9603393. DOI: 10.3390/ijms232012141.
miRNA in Molecular Diagnostics.
Matulic M, Grskovic P, Petrovic A, Begic V, Harabajsa S, Korac P Bioengineering (Basel). 2022; 9(9).
PMID: 36135005 PMC: 9495386. DOI: 10.3390/bioengineering9090459.