Immunohistochemical Expression of Autophagy-Related Marker (LC3B) and Stem Cell Marker (CD44) in Molecular Subtypes of Breast Cancer

Overview

Journal Asian Pac J Cancer Prev

Specialty Oncology

Date 2024 Jan 29

PMID 38285778

Authors

Heba E M El-Deek

Maha Salah El-Naggar

Shimaa Gamal Sayed

Affiliations

Soon will be listed here.

Abstract

Background: Breast cancer (BC) is among the most prevalent aggressive type of malignancy affecting females worldwide. Despite the advance in early detection and management of BC; recurrence, metastasis and mortality remains high. This may be attributed to heterogeneity of BC which explained by the presence of breast cancer stem cells (BCSCs). BCSCs is characterized by their ability of self-renewal, unlimited proliferation and their differentiation potential. BCSCs maintain their activity through process of autophagy. Autophagy is a catabolic pathway important for maintenance of cellular hemostasis in response to different stressful conditions. Autophagy allows BCSCs to adapt to different stressful conditions. So, it protects BCSCs from cytotoxic effects of anti-cancer therapy and anticancer resistance.

Methods: Formalin-fixed paraffin embedded fifty specimens of Invasive duct carcinoma of no special type(IDC/NST) of breast was selected and immunostained with stem cell marker CD44 and autophagy related marker LC3B antibodies. Correlation with different clinicopathological, histopathological characteristics and molecular subtypes of studied specimens were evaluated.

Results: Both CD44 and LC3B expression were significantly associated with lymph nodal metastasis (p =0.001 and 0.010 respectively), advanced pathological stage (p= 0.045 and 0.004 respectively) and with triple negative molecular subtype of BC (p=0.044 and 0.048 respectively). Statistically positive correlation was also found between both tumor markers expression.

Conclusion: Results of this study suggests that CD44 and LC3B expression play a role in the clinical behavior and progression of different molecular subtypes of BC.

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