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- W4375852733 abstract "Abstract Background Breast cancer (BC) is regarded as one of the most common cancers diagnosed among the female population and has an extremely high mortality rate. It is known that Fibronectin 1 (FN1) drives the occurrence and development of a variety of cancers through metabolic reprogramming. Aspartic acid is considered to be an important substrate for nucleotide synthesis. However, the regulatory mechanism between FN1 and aspartate metabolism is currently unclear. Methods We used RNA sequencing (RNA seq) and liquid chromatography-mass spectrometry (LC-MS) to analyze the tumor tissues and paracancerous tissues of patients. MCF7 and MDA-MB-231 cells were used to explore the effects of FN1-regulated aspartic acid metabolism on cell survival, invasion, migration and tumor growth. We used PCR, Western blot, immunocytochemistry and immunofluorescence techniques to study it. Results We found that FN1 was highly expressed in tumor tissues, especially in Lumina A and TNBC subtypes, and was associated with poor prognosis. In vivo and in vitro experiments showed that silencing FN1 inhibits the activation of the YAP1/Hippo pathway by enhancing YAP1 phosphorylation, down-regulates SLC1A3-mediated aspartate uptake and utilization by tumor cells, inhibits BC cell proliferation, invasion and migration, and promotes apoptosis. In addition, inhibition of FN1 combined with the YAP1 inhibitor or SLC1A3 inhibitor can effectively inhibit tumor growth, of which inhibition of FN1 combined with the YAP1 inhibitor is more effective. Conclusion Targeting the FN1/YAP1/SLC1A3/Aspartate metabolism regulatory axis provides a new target for BC diagnosis and treatment. This study also revealed that intratumoral metabolic heterogeneity plays an important role in the progression of different subtypes of breast cancer." @default.
- W4375852733 created "2023-05-10" @default.
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- W4375852733 date "2023-05-08" @default.
- W4375852733 modified "2023-09-27" @default.
- W4375852733 title "FN1 Mediated Activation of Aspartate Metabolism Promotes the Progression of Triple-negative and Luminal A Breast Cancer" @default.
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- W4375852733 doi "https://doi.org/10.21203/rs.3.rs-2629354/v1" @default.
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