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Alkaline ceramidase 2 is a novel direct target of p53 and induces autophagy and apoptosis through ROS generation
Wang, Yitao1,2; Zhang, Chunxue1,2; Jin, Yuelei1,2; Wang, Sen1,2; He, Qing1,2; Liu, Zhu1,2; Ai, Qing1,2; Lei, Yunlong1,2; Li, Yi1,2; Song, Fangzhou1,2; Bu, Youquan1,2
2017-03-15
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume7
AbstractACER2 is a critical sphingolipid metabolizing enzyme, and has been shown to be remarkably upregulated following various stimuli such as DNA damage. However, the transcriptional regulatory mechanism of ACER2 gene and its potential role in the regulation of autophagy remain unknown. In this study, we have for the first time identified the human ACER2 gene promoter, and found that human ACER2 transcription is directly regulated by p53 and ACER2 is implicated in the induction of autophagy as well as apoptosis. A series of luciferase reporter assay demonstrated that ACER2 major promoter is located within its first intron where the consensus p53-binding sites exist. Consistently, forced expression of p53 significantly stimulated ACER2 transcription. Notably, p53-mediated autophagy and apoptosis were markedly enhanced by ACER2. Depletion of the essential autophagy gene ATG5 revealed that ACER2-induced autophagy facilitates its effect on apoptosis. Further studies clearly showed that ACER2-mediated autophagy and apoptosis are accompanied by ROS generation. In summary, our present study strongly suggests that ACER2 plays a pivotal role in p53-induced autophagy and apoptosis, and thus might serve as a novel and attractive molecular target for cancer treatment.
DOI10.1038/srep44573
URLView the original
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000396656400001
PublisherNATURE PUBLISHING GROUP
The Source to ArticleWOS
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Chinese Medical Sciences
Affiliation1.Chongqing Med Univ, Dept Biochem & Mol Biol, Chongqing 400016, Peoples R China;
2.Chongqing Med Univ, Mol Med & Canc Res Ctr, Chongqing 400016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yitao,Zhang, Chunxue,Jin, Yuelei,et al. Alkaline ceramidase 2 is a novel direct target of p53 and induces autophagy and apoptosis through ROS generation[J]. SCIENTIFIC REPORTS,2017,7.
APA Wang, Yitao.,Zhang, Chunxue.,Jin, Yuelei.,Wang, Sen.,He, Qing.,...&Bu, Youquan.(2017).Alkaline ceramidase 2 is a novel direct target of p53 and induces autophagy and apoptosis through ROS generation.SCIENTIFIC REPORTS,7.
MLA Wang, Yitao,et al."Alkaline ceramidase 2 is a novel direct target of p53 and induces autophagy and apoptosis through ROS generation".SCIENTIFIC REPORTS 7(2017).
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