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Published on: May 14, 2016
Curcumin induced G2/M cycle arrest in SK-N-SH neuroblastoma cells through the ROS-mediated p53 signaling pathway
Zijie Ye1, Danyang Chen2, Ruilin Zheng2
1Department of Pediatric Urology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
Abstract:
Neuroblastoma (NB) is a solid tumor in the nervous system and has a high mortality rate in children. Curcumin has well-characterized anticancer properties, while there is no effective method in clinical treatment. MTT assays revealed that curcumin dramatically inhibited the proliferation of SK-N-SH cells. Compared with the control group, curcumin markedly restrained the migration of SK-N-SH cells. Curcumin induced SK-N-SH cell apoptosis by G2/M cycle arrest and activated caspase-3 activity. Furthermore, curcumin promoted the overproduction of intracellular ROS and apoptosis induced by activating p53 and Bcl-2 signal pathways. This finding demonstrated the application of curcumin is an effective strategy for the therapeutics of NB.
Insights
Curcumin effectively inhibits neuroblastoma (NB) cell proliferation and migration. It induces apoptosis by arresting the cell cycle and activating key signaling pathways, offering a potential therapeutic strategy for this childhood cancer.
Area of Science:
- Molecular Biology
- Cancer Research
- Pharmacology
Background:
- Neuroblastoma (NB) is a pediatric cancer with a high mortality rate.
- Current clinical treatments for NB lack sufficient efficacy.
- Curcumin exhibits known anticancer properties.
Purpose of the Study:
- To investigate the therapeutic potential of curcumin against neuroblastoma.
- To elucidate the mechanisms by which curcumin affects NB cells.
Main Methods:
- MTT assays were used to assess cell proliferation.
- Cell migration was evaluated.
- Apoptosis, cell cycle arrest, caspase-3 activity, intracellular ROS, and p53/Bcl-2 pathways were analyzed.
Main Results:
- Curcumin significantly inhibited SK-N-SH neuroblastoma cell proliferation and migration.
- Curcumin induced apoptosis via G2/M cell cycle arrest and activated caspase-3.
- Curcumin increased intracellular reactive oxygen species (ROS) and activated p53 and Bcl-2 signaling pathways.
Conclusions:
- Curcumin demonstrates significant anti-neuroblastoma activity in vitro.
- The mechanism involves cell cycle arrest, apoptosis induction, and modulation of key signaling pathways.
- Curcumin represents a promising therapeutic candidate for neuroblastoma treatment.
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