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Combination of PARP and WEE1 inhibitors in vitro: Potential for use in the treatment of SHH medulloblastoma

  • Authors:
    • Monika Lukoseviciute
    • Aikaterini Theodosopoulou
    • Stefan Holzhauser
    • Tina Dalianis
    • Ourania N. Kostopoulou
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    Affiliations: Department of Oncology‑Pathology, Karolinska Institutet, 171 64 Stockholm, Sweden
    Copyright: © Lukoseviciute et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 125
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    Published online on: May 5, 2023
       https://doi.org/10.3892/or.2023.8562
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Abstract

Medulloblastoma (MB), grouped as either WNT‑activated, Sonic hedgehog (SHH)‑activated, or non-WNT/non-SHH group 3, accounts for almost 20% of all childhood brain cancers. In spite of current intensive treatments, not all patients are cured and survivors suffer from severe side‑effects. The present study therefore examined the effects of the poly‑ADP‑ribose polymerase (PARP) and WEE1‑like protein kinase (WEE1) inhibitors, BMN673 and MK‑1775, respectively, alone or in combination on four MB cell lines. More specifically, the MB cell lines, DAOY, UW228‑3, MED8A and D425, were tested for their sensitivity to BMN673 and MK‑1775 alone or in combination, using cell viability, cell confluency and cytotoxicity assays. The effects on the cell cycle phases were also examined using FACS analysis. Monotherapy with BMN673 and MK‑1775 exerted dose‑dependent inhibitory effects on the viability of almost all MB cell lines. Notably, when BMN673 and MK‑1775 were used in combination, synergistic effects were noted in the SHH group cell lines (DAOY and UW228‑3), but not in the already WEE1‑sensitive group 3 (MED8A and D425) lines. Moreover, the combination treatment decreased the percentage of cells in the G1 phase and induced the novel distribution of both DAOY and UW228‑3 cells in the S and G2/M phases, with the UW228‑3 cells exhibiting a greater delay. To conclude, MK‑1775 was efficient in all and BMN673 in most cell lines, and their combined use exerted synergistic effects on the SHH, but not the group 3 cell lines. These data suggest that MK‑1775 alone may be of interest for all MB cell lines, and that the combination of PARP/WEE1 inhibitors may provide possible therapeutic opportunities for the therapy of SHH MBs. Their use warrants further investigations in the future.
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Lukoseviciute M, Theodosopoulou A, Holzhauser S, Dalianis T and Kostopoulou ON: Combination of PARP and WEE1 inhibitors <em>in vitro</em>: Potential for use in the treatment of SHH medulloblastoma. Oncol Rep 49: 125, 2023.
APA
Lukoseviciute, M., Theodosopoulou, A., Holzhauser, S., Dalianis, T., & Kostopoulou, O.N. (2023). Combination of PARP and WEE1 inhibitors <em>in vitro</em>: Potential for use in the treatment of SHH medulloblastoma. Oncology Reports, 49, 125. https://doi.org/10.3892/or.2023.8562
MLA
Lukoseviciute, M., Theodosopoulou, A., Holzhauser, S., Dalianis, T., Kostopoulou, O. N."Combination of PARP and WEE1 inhibitors <em>in vitro</em>: Potential for use in the treatment of SHH medulloblastoma". Oncology Reports 49.6 (2023): 125.
Chicago
Lukoseviciute, M., Theodosopoulou, A., Holzhauser, S., Dalianis, T., Kostopoulou, O. N."Combination of PARP and WEE1 inhibitors <em>in vitro</em>: Potential for use in the treatment of SHH medulloblastoma". Oncology Reports 49, no. 6 (2023): 125. https://doi.org/10.3892/or.2023.8562
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Spandidos Publications style
Lukoseviciute M, Theodosopoulou A, Holzhauser S, Dalianis T and Kostopoulou ON: Combination of PARP and WEE1 inhibitors <em>in vitro</em>: Potential for use in the treatment of SHH medulloblastoma. Oncol Rep 49: 125, 2023.
APA
Lukoseviciute, M., Theodosopoulou, A., Holzhauser, S., Dalianis, T., & Kostopoulou, O.N. (2023). Combination of PARP and WEE1 inhibitors <em>in vitro</em>: Potential for use in the treatment of SHH medulloblastoma. Oncology Reports, 49, 125. https://doi.org/10.3892/or.2023.8562
MLA
Lukoseviciute, M., Theodosopoulou, A., Holzhauser, S., Dalianis, T., Kostopoulou, O. N."Combination of PARP and WEE1 inhibitors <em>in vitro</em>: Potential for use in the treatment of SHH medulloblastoma". Oncology Reports 49.6 (2023): 125.
Chicago
Lukoseviciute, M., Theodosopoulou, A., Holzhauser, S., Dalianis, T., Kostopoulou, O. N."Combination of PARP and WEE1 inhibitors <em>in vitro</em>: Potential for use in the treatment of SHH medulloblastoma". Oncology Reports 49, no. 6 (2023): 125. https://doi.org/10.3892/or.2023.8562
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