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. 2020 Sep:102:104051.
doi: 10.1016/j.bioorg.2020.104051. Epub 2020 Jun 30.

Novel antiproliferative agents bearing morpholinopyrimidine scaffold as PI3K inhibitors and apoptosis inducers; design, synthesis and molecular docking

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Novel antiproliferative agents bearing morpholinopyrimidine scaffold as PI3K inhibitors and apoptosis inducers; design, synthesis and molecular docking

Amira A Helwa et al. Bioorg Chem. 2020 Sep.

Abstract

Two series of novel morpholinopyrimidine derivatives were synthesized and screened for their in-vitro cytotoxic activity against 60 tumor cell line by the National Cancer Institute, USA. The in-vitro cytotoxic IC50 values for the most active compounds 6e, 6g, and 6l against the most sensitive cell line leukemia SR were estimated (IC50 = 0.76, 13.59, and 4.37 uM, respectively). To investigate their PI3K enzyme inhibition activity, the assay was done on Class IA (α, β, & δ) isoforms. The IC50 values were very promising: compound [6e = 11.73 (α), 6.09 (β), 11.18 (δ)], compound [6g = 8.43 (α), 15.84 (β), 30.62 (δ)], and compound [6l = 13.98 (α), 7.22 (β), 10.94 (δ)], compared to the reference compound LY294002 = 6.28 (α), 4.51 (β), 4.60 (δ) uM, respectively. Moreover, cell cycle analysis and annexin V-FITC staining were done on Leukemia SR, there was arrest at G2/M phase and apoptosis was induced. Finally, docking study was performed to analyze the interactive mode of these derivatives in PI3Kα ATP-binding site. These outcomes proved that compounds 6e, 6g, and 6l are potential leads for further optimization as antileukemic agents.

Keywords: Apoptosis; Cytotoxicity; Leukemia; Molecular modeling; Morpholinopyrimidine; PI3K inhibition.

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Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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