A new high-performance liquid chromatography method determines low production of 9-β-D-arabinofuranosylguanine triphosphate, an active metabolite of nelarabine, in adult T-cell leukemia cells

  • Authors:
    • Takahiro Yamauchi
    • Rie Nishi
    • Kazuhiro Kitazumi
    • Tsuyoshi Nakano
    • Takanori Ueda
  • View Affiliations

  • Published online on: February 1, 2010     https://doi.org/10.3892/or_00000661
  • Pages: 499-504
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Abstract

The 9-β-d-arabinofuranosylguanine (ara-G), an active compound of nelarabine, demonstrates potent cytotoxicity specifically on T-cell malignancies. In cells, ara-G is phosphorylated to ara-G triphosphate (ara-GTP), which is subsequently incorporated into DNA, thereby inhibiting DNA synthesis. Because ara-GTP is crucial to ara-G's cytotoxicity, the determination of ara-GTP production in cancer cells is informative for optimizing nelarabine administration. Here, we developed a new, sensitive isocratic-elution HPLC method for quantifying ara-GTP. Samples were eluted isocratically by using phosphate buffer at a constant flow rate. Ara-GTP was clearly separated from other nucleotides by using an anion-exchange column and it was quantitated by its peak area at 254 nm. The standard curve was linear with low variability and a sensitive detection limit (10 pmol). Furthermore, due to ara-G's specificity to T-cells we hypothesized that nelarabine might be effective against adult T-cell leukemia (ATL). The ara-GTP production was compared between T-lymphoblastic leukemia CCRF-CEM and ATL cell lines in vitro. When CEM cells were incubated with ara-G, the ara-GTP production increased in a concentration- and time-dependent manner. In contrast, 5 ATL cell lines accumulated lower ara-GTP in the same condition. While ara-G inhibited the growth of CEM cells with a 50% growth inhibition concentration of 2 µM, the inhibitory-concentration values were >1 mM in 8 of the 12 ATL cell lines. This ineffectiveness appeared to correspond with the low ara-GTP production. The present study is the first to evaluate the potential of ara-G against ATL cells; our results suggest that nelarabine would not be effective against ATL.

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February 2010
Volume 23 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Yamauchi T, Nishi R, Kitazumi K, Nakano T and Ueda T: A new high-performance liquid chromatography method determines low production of 9-β-D-arabinofuranosylguanine triphosphate, an active metabolite of nelarabine, in adult T-cell leukemia cells. Oncol Rep 23: 499-504, 2010
APA
Yamauchi, T., Nishi, R., Kitazumi, K., Nakano, T., & Ueda, T. (2010). A new high-performance liquid chromatography method determines low production of 9-β-D-arabinofuranosylguanine triphosphate, an active metabolite of nelarabine, in adult T-cell leukemia cells. Oncology Reports, 23, 499-504. https://doi.org/10.3892/or_00000661
MLA
Yamauchi, T., Nishi, R., Kitazumi, K., Nakano, T., Ueda, T."A new high-performance liquid chromatography method determines low production of 9-β-D-arabinofuranosylguanine triphosphate, an active metabolite of nelarabine, in adult T-cell leukemia cells". Oncology Reports 23.2 (2010): 499-504.
Chicago
Yamauchi, T., Nishi, R., Kitazumi, K., Nakano, T., Ueda, T."A new high-performance liquid chromatography method determines low production of 9-β-D-arabinofuranosylguanine triphosphate, an active metabolite of nelarabine, in adult T-cell leukemia cells". Oncology Reports 23, no. 2 (2010): 499-504. https://doi.org/10.3892/or_00000661