MAPK Signaling‐Mediated RFNG Phosphorylation and Nuclear Translocation Restrain Oxaliplatin‐Induced Apoptosis and Ferroptosis
Abstract: Chemotherapy resistance remains a major challenge in the treatment of colorectal cancer (CRC). Therefore, it is crucial to develop novel strategies to sensitize cancer cells to chemotherapy. Here, the fringe family is screened to determine their contribution to chemotherapy resistance in CRC. It is found that RFNG depletion significantly sensitizes cancer cells to oxaliplatin treatment. Mechanistically, chemotherapy‐activated MAPK signaling induces ERK to phosphorylate RFNG Ser255 residue. Phosphorylated RFNG S255 (pS255) interacts with the nuclear importin proteins KPNA1/importin‐α1 and KPNB1/importin‐β1, leading to its translocation into the nucleus where it targets p53 and inhibits its phosphorylation by competitively inhibiting the binding of CHK2 to p53. Consequently, the expression of CDKN1A is decreased and that of SLC7A11 is increased, leading to the inhibition of apoptosis and ferroptosis. In contrast, phosphor‐deficient RFNG S225A mutant showed increased apoptosis and ferroptosis, and exhibited a notable response to oxaliplatin chemotherapy both in vitro and in vivo. It is further revealed that patients with low RFNG pS255 exhibited significant sensitivity to oxaliplatin in a patient‐derived xenograft (PDX) model. These findings highlight the crosstalk between the MAPK and p53 signaling pathways through RFNG, which mediates oxaliplatin resistance in CRC. Additionally, this study provides guidance for oxaliplatin treatment of CRC patients.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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MAPK Signaling‐Mediated RFNG Phosphorylation and Nuclear Translocation Restrain Oxaliplatin‐Induced Apoptosis and Ferroptosis ; day:09 ; month:08 ; year:2024 ; extent:16
Advanced science ; (09.08.2024) (gesamt 16)
- Urheber
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Di, Yuqin
Zhang, Xiang
Wen, Xiangqiong
Qin, Jiale
Ye, Lvlan
Wang, Youpeng
Song, Mei
Wang, Ziyang
He, Weiling
- DOI
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10.1002/advs.202402795
- URN
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urn:nbn:de:101:1-2408101409375.738530048009
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:44 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Di, Yuqin
- Zhang, Xiang
- Wen, Xiangqiong
- Qin, Jiale
- Ye, Lvlan
- Wang, Youpeng
- Song, Mei
- Wang, Ziyang
- He, Weiling
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