NF-κB-mediated EAAT3 upregulation in antioxidant defense and ferroptosis sensitivity in lung cancer

Comment by InpharmD Researcher

Cellular glutathione (GSH) in lung cancer cells represents the most abundant antioxidant. GSH production is regulated not only by upregulated cystine/glutamate exchanger (xCT) but also by the involvement of glutamate transporters, specifically excitatory amino acid transporter 3 (EAAT3). Our prior research established that the uptake of glutamate via EAAT3 plays a pivotal role in driving cystine uptake through xCT, contributing to GSH biosynthesis during lung tumorigenesis.

  

strongly enriched in brain metastases, which was also recovered in matched single-cell spatial transcriptomics. Using multiplexed immunofluorescence in an independent cohort of treatment-naive pairs of primary tumors and brain metastases from the same patients with NSCLC, we validated genomic and tumor-microenvironmental findings and identified a cancer cell population characterized by neural features strongly enriched in brain metastases. This comprehensive analysis provides insights into human NSCLC brain metastasis biology and serves as an important resource for additional discovery.

Background

N.A.R. is currently an employee and shareholder of Synthekine Inc. B.S.H. has received consulting fees from AstraZeneca, Ideaya, Jazz Pharmaceuticals, Sorrento Therapeutics, Genentech-Roche, OncLive, Veeva, Athenium, Boxer, Dava Oncology and SAI-Med and research funding to Columbia University from Neximmune, Inc, Janssen and Genentech-Roche. A.D.A. is now an employee of Adaptimmune. J.B. is now an employee of Pfizer. S.W., .S.K.D, and G.S. are employees of Caris Life Sciences. A.S. received consulting fees and honoraria from Abbvie, Bristol Myers Squibb, Veracyte, Genentech, Medscape and Physician Education Resource, and research support from Boehringer Ingelheim. All remaining authors report no competing interests.

N.A.R. is currently an employee and shareholder of Synthekine Inc. B.S.H. has received consulting fees from AstraZeneca, Ideaya, Jazz Pharmaceuticals, Sorrento Therapeutics, Genentech-Roche, OncLive, Veeva, Athenium, Boxer, Dava Oncology and SAI-Med and research funding to Columbia University from Neximmune, Inc, Janssen and Genentech-Roche. A.D.A. is now an employee of Adaptimmune. J.B. is now an employee of Pfizer. S.W., .S.K.D, and G.S. are employees of Caris Life Sciences. A.S. received consulting fees and honoraria from Abbvie, Bristol Myers Squibb, Veracyte, Genentech, Medscape and Physician Education Resource, and research support from Boehringer Ingelheim. All remaining authors report no competing interests.

Relevant Prescribing Information

strongly enriched in brain metastases, which was also recovered in matched single-cell spatial transcriptomics. Using multiplexed immunofluorescence in an independent cohort of treatment-naive pairs of primary tumors and brain metastases from the same patients with NSCLC, we validated genomic and tumor-microenvironmental findings and identified a cancer cell population characterized by neural features strongly enriched in brain metastases. This comprehensive analysis provides insights into human NSCLC brain metastasis biology and serves as an important resource for additional discovery.

References:

Sperduto, P. W. et al. Diagnosis-specific prognostic factors, indexes, and treatment outcomes for patients with newly diagnosed brain metastases: a multi-institutional analysis of 4,259 patients. Int. J. Radiat. Oncol. Biol. Phys. 77, 655–661 (2010)

Literature Review

A search of the published medical literature revealed 1 study investigating the researchable question:

NF-κB-mediated EAAT3 upregulation in antioxidant defense and ferroptosis sensitivity in lung cancer

Level of evidence

B - One high-quality study or multiple studies with limitations  Read more→



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