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Tripartite Motif-Containing 2, a Glutamine Metabolism-Associated Protein, Predicts Poor Patient Outcome in Triple-Negative Breast Cancer Treated with Chemotherapy.
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- Author(s): Masisi, Brendah K.; El Ansari, Rokaya; Alfarsi, Lutfi; Fakroun, Ali; Erkan, Busra; Ibrahim, Asmaa; Toss, Michael; Ellis, Ian O.; Rakha, Emad A.; Green, Andrew R.
- Source:
Cancers; Jun2024, Vol. 16 Issue 11, p1949, 12p- Subject Terms:
BREAST cancer prognosis; GLUTAMINE metabolism; PROTEIN metabolism; CANCER invasiveness; BREAST tumors; CELL physiology; TREATMENT effectiveness; TRANSCRIPTION factors; DESCRIPTIVE statistics; CANCER chemotherapy; GENE expression; MESSENGER RNA; IMMUNOHISTOCHEMISTRY; METASTASIS; TUMOR classification; SEQUENCE analysis - Source:
- Additional Information
- Abstract: Simple Summary: Triple-negative breast cancer (TNBC) is an aggressive form of breast cancer with limited treatment options. This study looked for markers in breast cancer cells linked to glutamine metabolism, an important fuel source for cancer cells. It found a protein called TRIM2 to be highly expressed alongside a key glutamine metabolism enzyme in TNBC. High levels of TRIM2 were linked to a worse chance of spread of cancer to distant sites. This association was particularly strong in patients who received chemotherapy. These findings suggest TRIM2 could be a valuable prognostic marker for TNBC patients, especially those undergoing chemotherapy. Further research is needed to understand how TRIM2 functions and its connection to glutamine metabolism in breast cancer. Background: Breast cancer (BC) remains heterogeneous in terms of prognosis and response to treatment. Metabolic reprogramming is a critical part of oncogenesis and a potential therapeutic target. Glutaminase (GLS), which generates glutamate from glutamine, plays a role in triple-negative breast cancer (TNBC). However, targeting GLS directly may be difficult, as it is essential for normal cell function. This study aimed to determine potential targets in BC associated with glutamine metabolism and evaluate their prognostic value in BC. Methods: The iNET model was used to identify genes in BC that are associated with GLS using RNA-sequencing data. The prognostic significance of tripartite motif-containing 2 (TRIM2) mRNA was assessed in BC transcriptomic data (n = 16,575), and TRIM2 protein expression was evaluated using immunohistochemistry (n = 749) in patients with early-stage invasive breast cancer with long-term follow-up. The associations between TRIM2 expression and clinicopathological features and patient outcomes were evaluated. Results: Pathway analysis identified TRIM2 expression as an important gene co-expressed with high GLS expression in BC. High TRIM2 mRNA and TRIM2 protein expression were associated with TNBC (p < 0.01). TRIM2 was a predictor of poor distant metastasis-free survival (DMFS) in TNBC (p < 0.01), and this was independent of established prognostic factors (p < 0.05), particularly in those who received chemotherapy (p < 0.05). In addition, TRIM2 was a predictor of shorter DMFS in TNBC treated with chemotherapy (p < 0.01). Conclusions: This study provides evidence of an association between TRIM2 and poor patient outcomes in TNBC, especially those treated with chemotherapy. The molecular mechanisms and functional behaviour of TRIM2 and the functional link with GLS in BC warrant further exploration using in vitro models. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Cancers is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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