Open AccessThe Tumor Suppressor p53 Limits Ferroptosis by Blocking DPP4 Activity
Author(s) -
Yangchun Xie,
Shan Zhu,
Xinxin Song,
Xiaofang Sun,
Yong Fan,
Jinbao Liu,
Meizuo Zhong,
Hua Yuan,
Lin Zhang,
Timothy R. Billiar,
Michael T. Lotze,
Herbert J. Zeh,
Rui Kang,
Guido Kroemer,
Daolin Tang
Publication year - 2017
Publication title -
cell reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.264
H-Index - 154
eISSN - 2639-1856
pISSN - 2211-1247
DOI - 10.1016/j.celrep.2017.07.055
Subject(s) - suppressor , transcription factor , microbiology and biotechnology , chemistry , transcription (linguistics) , cancer research , endogeny , programmed cell death , lipid peroxidation , cell , biology , gene , apoptosis , biochemistry , oxidative stress , linguistics , philosophy
Ferroptosis is a form of regulated cell death that may facilitate the selective elimination of tumor cells. The tumor suppressor p53 (TP53) has been demonstrated to promote ferroptosis via a transcription-dependent mechanism. Here, we show that TP53 limits erastin-induced ferroptosis by blocking dipeptidyl-peptidase-4 (DPP4) activity in a transcription-independent manner. Loss of TP53 prevents nuclear accumulation of DPP4 and thus facilitates plasma-membrane-associated DPP4-dependent lipid peroxidation, which finally results in ferroptosis. These findings reveal a direct molecular link between TP53 and DPP4 in the control of lipid metabolism and may provide a precision medicine strategy for the treatment of colorectal cancer by induction of ferroptosis.
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