Nutrient Availability as a Driver of Transcriptome Reprogramming in Osteosarcoma

Altering glucose and glutamine concentrations in an osteosarcoma cell-line model produces a pronounced nutrient-dependent transcriptome reprogramming, including a growth-rate-linked FOS-like expression pattern.

• Why it matters: Nutrient availability in the tumor microenvironment is linked to oncogenic signaling, but how specific nutrient levels reshape osteosarcoma gene regulation remains underexplored.
• What they did: Bulk RNA sequencing was performed on an established osteosarcoma cell line cultured under varying concentrations of glucose and glutamine, followed by differential expression and pathway analyses.
• The result: Seven distinct gene-expression patterns were identified, with one strongly correlated with cell growth rate and featuring growth-rate-dependent expression of FOS, suggesting nutrient-responsive targets.

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