ArticleMedeniyet medical journal2024
AMPK Activation in TET2 Downregulated Leukemia Cells Upon Glutamine Limitation.
Article in Medeniyet medical journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: Metabolic rewiring is a characteristic of cancer cells. Cancer cells require more nutrients for survival and proliferation. Although glutamine can be produced in cells via a series of enzymatic reactions, a group of cancer cells are dependent on extracellular glutamine for survival. TET2 plays a role in DNA demethylation and is a tumor suppressor gene. The Methods: To evaluate the association between TET2 expression and glutamine limitation, TET2 was downregulated in HL-60 cells using shRNA plasmids. The proliferation of TET2-knockdown HL-60 cells was calculated in normal and glutamine-deficient medium. GLUL mRNA expression was investigated using quantitative reverse transcription polymerase chain reaction and protein levels were evaluated using immunoblotting. Results: The numbers and viability of TET2-knockdown HL-60 cells were decreased in low glutamine-containing medium, but the viability of TET2-knockdown HL-60 cells was higher than that of control cells. GLUL mRNA expressions were increased in TET2-knockdown cells in low glutamine. In addition, P-AMPKα protein expression was increased in TET2-knockdown HL-60 cells in low glutamine-containing medium. Conclusions: Our findings indicate that TET2-knockdown HL-60 cells may be more resistant to glutamine deprivation. In glutamine-deficient medium, the mRNA expression of glutamine synthetase is increased, which could be related to glutamine addiction in cells. In addition, low-glutamyl medium increased the P-AMPKα protein level in TET2-knockdown HL-60 cells.
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