Molecular Research in Breast Cancer

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Molecular and Translational Medicine".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1194

Special Issue Editors


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Guest Editor
Laboratory of Biochemistry, Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90127 Palermo, Italy
Interests: TNBC; miRNA; cell death; cancer stem cells
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Section of Biochemistry, Department of Biomedicine, Neuroscience and Advanced Diagnostic, University of Palermo, 90127 Palermo, Italy
Interests: cancer; cancer stem cells; oxidative stress; antioxidant activity cell death; cancer therapy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Breast cancer, one of the most common cancers affecting women worldwide, is classified based on its histological and molecular variability. This variability influences prognosis and treatment strategies, making breast cancer a complex disease to study and manage. One particularly heterogeneous subgroup is triple-negative breast cancer (TNBC), characterized by the absence of PR, ER, and HER2/NEU receptor expression. This molecular profile confers TNBC a particularly metastatic and invasive nature, along with drug resistance and a poor prognosis. Consequently, TNBC lacks specific molecular targets, making it difficult to establish effective therapeutic strategies, and conventional chemotherapy remains the primary treatment option.

The Special Issue, titled “Molecular Research in Breast Cancer”, aims to collect recent findings in this context, such as the following:

  • Genetic, epigenetic, and transcriptional profiles;
  • Descriptions of proteomic features and biochemical pathways;
  • Identification of cancer stem cells and their interactions with the microenvironment;
  • Metabolic reprogramming;
  • Effects induced by various drugs, in vitro and in vivo;
  • Breast cancer immunity and metabolic reprogramming;
  • Any evidence useful in identifying novel molecular targets to address the aggressive nature of TNBC.

We welcome contributions that enhance our understanding of breast cancer at the molecular level, providing insights that could lead to more effective treatments and improved patient outcomes.

Dr. Anna De Blasio
Dr. Daniela Carlisi
Guest Editors

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Keywords

  • breast cancer
  • apoptosis
  • signaling pathways
  • drug resistance
  • metastasis
  • cancer stem cells
  • microRNA
  • biomarkers
  • drug target
  • tumor metabolism
  • tumor immunity

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Published Papers (1 paper)

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Research

17 pages, 1302 KiB  
Article
DNA Methylation and Demethylation in Triple-Negative Breast Cancer: Associations with Clinicopathological Characteristics and the Chemotherapy Response
by Kateryna Tarhonska, Mateusz Wichtowski, Thomas Wow, Agnieszka Kołacińska-Wow, Katarzyna Płoszka, Wojciech Fendler, Izabela Zawlik, Sylwia Paszek, Alina Zuchowska and Ewa Jabłońska
Biomedicines 2025, 13(3), 585; https://doi.org/10.3390/biomedicines13030585 - 26 Feb 2025
Viewed by 855
Abstract
Objectives: Triple-negative breast cancer (TNBC) is an aggressive cancer subtype with limited treatment options due to the absence of estrogen, progesterone receptors, and HER2 expression. This study examined the impact of DNA methylation and demethylation markers in tumor tissues on TNBC patients’ response [...] Read more.
Objectives: Triple-negative breast cancer (TNBC) is an aggressive cancer subtype with limited treatment options due to the absence of estrogen, progesterone receptors, and HER2 expression. This study examined the impact of DNA methylation and demethylation markers in tumor tissues on TNBC patients’ response to neoadjuvant chemotherapy (NACT) and analyzed the correlation between 5-methylcytosine (5-mC) and 5-hydroxymethylcytosine (5-hmC) and clinicopathological characteristics, offering new insights into the predictive value of these epigenetic markers. Methods: The study included 53 TNBC female patients, 19 of whom received neoadjuvant chemotherapy (NACT) before surgery. Global DNA methylation and demethylation levels were quantified using an ELISA-based method to measure 5-mC and 5-hmC content in DNA isolated from pre-treatment biopsy samples (in patients undergoing NACT) and postoperative tissues (in patients without NACT). Results: In patients who received NACT, those with disease progression had significantly higher pretreatment levels of 5-hmC (p = 0.028) and a trend toward higher 5-mC levels (p = 0.054) compared to those with pathological complete response, partial response, or stable disease. Higher 5-mC and 5-hmC levels were significantly associated with higher tumor grade (p = 0.039 and p = 0.017, respectively). Additionally, a positive correlation was observed between the Ki-67 proliferation marker and both 5-mC (rS = 0.340, p = 0.049) and 5-hmC (rS = 0.341, p = 0.048) levels in postoperative tissues. Conclusions: Our study highlights the potential of global DNA methylation and demethylation markers as predictors of tumor aggressiveness and chemotherapy response in TNBC. Further research in larger cohorts is necessary to validate these markers’ prognostic and predictive value. Full article
(This article belongs to the Special Issue Molecular Research in Breast Cancer)
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