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Published in: BMC Complementary Medicine and Therapies 1/2021

01-12-2021 | Prostate Cancer | Research article

Piperlongumine inhibits migration and proliferation of castration-resistant prostate cancer cells via triggering persistent DNA damage

Authors: Ding-fang Zhang, Zhi-chun Yang, Jian-qiang Chen, Xiang-xiang Jin, Yin-da Qiu, Xiao-jing Chen, Hong-yi Shi, Zhi-guo Liu, Min-shan Wang, Guang Liang, Xiao-hui Zheng

Published in: BMC Complementary Medicine and Therapies | Issue 1/2021

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Abstract

Background

Metastatic castration-resistant prostate cancer (CRPC) is the leading cause of death among men diagnosed with prostate cancer. Piperlongumine (PL) is a novel potential anticancer agent that has been demonstrated to exhibit anticancer efficacy against prostate cancer cells. However, the effects of PL on DNA damage and repair against CRPC have remained unclear. The aim of this study was to further explore the anticancer activity and mechanisms of action of PL against CRPC in terms of DNA damage and repair processes.

Methods

The effect of PL on CRPC was evaluated by MTT assay, long-term cell proliferation, reactive oxygen species assay, western blot assay, flow cytometry assay (annexin V/PI staining), β-gal staining assay and DAPI staining assay. The capacity of PL to inhibit the invasion and migration of CRPC cells was assessed by scratch-wound assay, cell adhesion assay, transwell assay and immunofluorescence (IF) assay. The effect of PL on DNA damage and repair was determined via IF assay and comet assay.

Results

The results showed that PL exhibited stronger anticancer activity against CRPC compared to that of taxol, cisplatin (DDP), doxorubicin (Dox), or 5-Fluorouracil (5-FU), with fewer side effects in normal cells. Importantly, PL treatment significantly decreased cell adhesion to the extracellular matrix and inhibited the migration of CRPC cells through affecting the expression and distribution of focal adhesion kinase (FAK), leading to concentration-dependent inhibition of CRPC cell proliferation and concomitantly increased cell death. Moreover, PL treatment triggered persistent DNA damage and provoked strong DNA damage responses in CRPC cells.

Conclusion

Collectively, our findings demonstrate that PL potently inhibited proliferation, migration, and invasion of CRPC cells and that these potent anticancer effects were potentially achieved via triggering persistent DNA damage in CRPC cells.
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Metadata
Title
Piperlongumine inhibits migration and proliferation of castration-resistant prostate cancer cells via triggering persistent DNA damage
Authors
Ding-fang Zhang
Zhi-chun Yang
Jian-qiang Chen
Xiang-xiang Jin
Yin-da Qiu
Xiao-jing Chen
Hong-yi Shi
Zhi-guo Liu
Min-shan Wang
Guang Liang
Xiao-hui Zheng
Publication date
01-12-2021
Publisher
BioMed Central
Published in
BMC Complementary Medicine and Therapies / Issue 1/2021
Electronic ISSN: 2662-7671
DOI
https://doi.org/10.1186/s12906-021-03369-0

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