The amino acid transporter SLC7A11 expression in breast cancer

Autor: Preyanka Nath, Lutfi H. Alfarsi, Rokaya El-Ansari, Brendah K. Masisi, Busra Erkan, Ali Fakroun, Ian O. Ellis, Emad A. Rakha, Andrew R. Green
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Cancer Biology & Therapy, Vol 25, Iss 1 (2024)
Druh dokumentu: article
ISSN: 15384047
1555-8576
1538-4047
DOI: 10.1080/15384047.2023.2291855
Popis: Breast cancer (BC), characterized by its diverse molecular profiles and clinical outcomes, presents a significant challenge in the development of effective therapeutic strategies. Metabolic reprogramming, a defining characteristic of cancer, has emerged as a promising target for novel therapies. SLC7A11, an amino acid transporter that facilitates cysteine uptake in exchange for glutamate, plays a crucial role in sustaining the altered metabolism of cancer cells. This study delves into the comprehensive analysis of SLC7A11 at the genomic, transcriptomic, and protein levels in extensive BC datasets to elucidate its potential role in different BC subtypes. SLC7A11 gene copy number and mRNA expression were evaluated using the Molecular Taxonomy of Breast Cancer International Consortium (METABRIC) cohort (n = 1,980) and Breast Cancer Gene Expression Miner (n = 4,712). SLC7A11 protein was assessed using immunohistochemistry in a large BC cohort (n = 1,981). Additionally, The Cancer Genome Atlas (TCGA) dataset was used to explore SLC7A11 DNA methylation patterns using MethSurv (n = 782) and association of SLC7A11 mRNA expression with immune infiltrates using TIMER (n = 1,100). High SLC7A11 mRNA and SLC7A11 protein expression were significantly associated with high tumor grade (p ≤ .02), indicating a potential role in cancer progression. Interestingly, SLC7A11 copy number gain was observed in HER2+ tumors (p = .01), suggesting a subtype-specific association. In contrast, SLC7A11 mRNA expression was higher in the basal-like/triple-negative (TN; p
Databáze: Directory of Open Access Journals
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