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. 2017 Oct 23;7:13749. doi: 10.1038/s41598-017-13664-x

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Schematic diagram represents the proposed mechanism of action of W-2b. W-2b triggers Chk2 activation in cancer cells, thereby, inhibiting cell proliferation by NM23-H1/NF-kB/c-Myc/Cyclin D1/CDK-2/CDK-4 signaling axis. These effects of W-2b further induce senescence-specific marker p21 expression and its nuclear localization to promote premature senescence in proliferating cancer cells.