ArticleOncogenesis2024
RIOK3 sustains colorectal cancer cell survival under glucose deprivation via an HSP90α-dependent pathway.
Article in Oncogenesis, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed, 0 citations in OpenAlex.
- The atypical kinase right open reading frame kinase 1 suppresses glioma cell growth through mammalian target of rapamycin inhibition and apoptotic signaling activation.Translational cancer research · 2026Article
- AHSA1 promotes the progression of lung cancer by enhancing the expression of HSP90α.Histology and histopathology · 2026Article
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Authors and funding
12 authors at 3 institutions in 1 country.
Funding
Abstract
Glucose oxidation via the pentose phosphate pathway serves as the primary cellular mechanism for generating nicotinamide adenine dinucleotide phosphate (NADPH). The central regions of solid tumors typically experience glucose deficiency, emphasizing the need for sustained NADPH production crucial to tumor cell survival. This study highlights the crucial role of RIOK3 in maintaining NADPH production and colorectal cancer (CRC) cell survival during glucose deficiency. Our findings revealed upregulated RIOK3 expression upon glucose deprivation, with RIOK3 knockout significantly reducing cancer cell survival. Mechanistically, RIOK3 interacts with heat shock protein 90α (HSP90α), a chaperone integral to various cellular processes, thereby facilitating HSP90α binding to isocitrate dehydrogenase 1 (IDH1). This interaction further upregulates IDH1 expression, enhancing NADPH production and preserving redox balance. Furthermore, RIOK3 inhibition had no discernible effect on intracellular NADPH levels and cell death rates in HSP90α-knockdown cells. Collectively, our findings suggest that RIOK3 sustains colon cancer cell survival in low-glucose environments through an HSP90α-dependent pathway. This highlights the significance of the RIOK3-HSP90α-IDH1 cascade, providing insights into potential targeted therapeutic strategies for CRC in metabolic stress conditions.
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Registered trials
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