期刊
SCIENTIFIC REPORTS
卷 12, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41598-022-08049-8
关键词
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资金
- Grant agency of the Ministry of Health [NV18-07-00129]
- Grant Agency of the Czech Republic [20-27132S]
- Ministry of Health, Czech Republic [00064203]
- Grant Agency of Charles University [1262120]
In this study, the relationship among PTEN deletion, ASNase sensitivity, and glucose metabolism in T-ALL cells was investigated. It was found that aberrant PTEN/PI3K/Akt signaling may contribute to the therapeutic challenge of T-ALL. Furthermore, pharmacological inhibition of Akt can enhance the sensitivity of T-ALL cells to ASNase, providing a promising therapeutic option for T-ALL patients.
Childhood T-cell acute lymphoblastic leukemia (T-ALL) still remains a therapeutic challenge due to relapses which are resistant to further treatment. l-asparaginase (ASNase) is a key therapy component in pediatric T-ALL and lower sensitivity of leukemia cells to this drug negatively influences overall treatment efficacy and outcome. PTEN protein deletion and/or activation of the PI3K/Akt signaling pathway leading to altered cell growth and metabolism are emerging as a common feature in T-ALL. We herein investigated the relationship amongst PTEN deletion, ASNase sensitivity and glucose metabolism in T-ALL cells. First, we found significant differences in the sensitivity to ASNase amongst T-ALL cell lines. While cell lines more sensitive to ASNase were PTEN wild type (WT) and had no detectable level of phosphorylated Akt (P-Akt), cell lines less sensitive to ASNase were PTEN-null with high P-Akt levels. Pharmacological inhibition of Akt in the PTEN-null cells rendered them more sensitive to ASNase and lowered their glycolytic function which then resembled PTEN WT cells. In primary T-ALL cells, although P-Akt level was not dependent exclusively on PTEN expression, their sensitivity to ASNase could also be increased by pharmacological inhibition of Akt. In summary, we highlight a promising therapeutic option for T-ALL patients with aberrant PTEN/PI3K/Akt signaling.
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