2α-Hydroxyalantolactone from Pulicaria undulata: activity against multidrug-resistant tumor cells and modes of action
Background - Sesquiterpene lactones having α-methylene-γ-lactone moiety are promising natural metabolites showing various biological activity. One of the major metabolites isolated from Pulicaria undulata, 2α-hydroxyalantolactone (PU-1), has not been investigated in detail yet. Multidrug resistance...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2021
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| In: |
Phytomedicine
Year: 2021, Volume: 81, Pages: 1-13 |
| ISSN: | 1618-095X |
| DOI: | 10.1016/j.phymed.2020.153409 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.phymed.2020.153409 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0944711320302403 
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| Author Notes: | Mohamed-Elamir F. Hegazy, Mona Dawood, Nuha Mahmoud, Mohamed Elbadawi, Yoshikazu Sugimoto, Sabine M. Klauck, Nagla Mohamed, Thomas Efferth |
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| 245 | 1 | 0 | |a 2α-Hydroxyalantolactone from Pulicaria undulata |b activity against multidrug-resistant tumor cells and modes of action |c Mohamed-Elamir F. Hegazy, Mona Dawood, Nuha Mahmoud, Mohamed Elbadawi, Yoshikazu Sugimoto, Sabine M. Klauck, Nagla Mohamed, Thomas Efferth |
| 246 | 3 | 3 | |a 2Alpha-Hydroxyalantolactone from Pulicaria undulata : activity against multidrug-resistant tumor cells and modes of action |
| 246 | 3 | 3 | |a 2 Alpha-Hydroxyalantolactone from Pulicaria undulata : activity against multidrug-resistant tumor cells and modes of action |
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| 520 | |a Background - Sesquiterpene lactones having α-methylene-γ-lactone moiety are promising natural metabolites showing various biological activity. One of the major metabolites isolated from Pulicaria undulata, 2α-hydroxyalantolactone (PU-1), has not been investigated in detail yet. Multidrug resistance (MDR) represents a major obstacle for cancer chemotherapy and the capability of novel natural products to overcoming MDR is of great interest. - Purpose - Exploring the molecular modes of action for potent natural product metabolites. - Methods - The resazurin reduction assay was employed to evaluate the cytotoxicity of PU-1 on sensitive and their corresponding drug-resistant cell lines (overexpressing P-glycoprotein, BCRP, ABCB5, ΔEGFR, or TP53 knockout). Gene expression profiling was performed by transcriptome-wide mRNA microarray in the human CCRF-CEM leukemic cells after treatment with PU-1. The top significantly up- or down-regulated genes were identified by Chipster program and analyzed using Ingenuity Pathway Analysis (IPA) software. Finally, flow cytometry and Western blotting were performed for cell cycle analyses and apoptosis detection. - Results - The sesquiterpene lactone, PU-1, showed potent cytotoxicity towards the drug-sensitive and -resistant cell lines. Transcriptome-wide mRNA expression profiling and pathway analysis pointed to genes involved in DNA damage response and G2/M cell cycle arrest. G2/M arrest was verified by flow cytometry and further confirmed by the upregulation of p21 and downregulation of p-CDC25C expression in Western blotting. Moreover, the suggested DNA damage checkpoint regulation was confirmed by immunofluorescence and Western blotting by upregulation of pS345 Chk1, p-H3 and γ-H2AX. Furthermore, PU-1 inhibited PI3K/AKT pathway, which is involved in signaling DNA damage and G2/M arrest. Cells ultimately induced apoptosis upon PU-1 treatment. - Conclusions - PU-1 is a potent natural product inhibiting otherwise drug-resistant human tumor cell growth through DNA damage, G2/M cell cycle arrest and apoptosis. | ||
| 650 | 4 | |a 2α-Hydroxyalantolactone | |
| 650 | 4 | |a Cytotoxicity | |
| 650 | 4 | |a DNA damage | |
| 650 | 4 | |a G2/M cell cycle arrest | |
| 650 | 4 | |a Mode of action | |
| 650 | 4 | |a Pulicaria undulata | |
| 700 | 1 | |a Dawood, Mona |e VerfasserIn |4 aut | |
| 700 | 1 | |a Mahmoud, Nuha |e VerfasserIn |4 aut | |
| 700 | 1 | |a Elbadawi, Mohamed |e VerfasserIn |4 aut | |
| 700 | 1 | |a Sugimoto, Yoshikazu |e VerfasserIn |4 aut | |
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