Chemotherapy‐Induced Senescence Reprogramming Promotes Nasopharyngeal Carcinoma Metastasis by circRNA‐Mediated PKR Activation
Abstract: Senescence is associated with tumor metastasis and chemotherapy resistance, yet the mechanisms remain elusive. Here, it is identified that nasopharyngeal carcinoma (NPC) patients who developed distant metastasis are characterized by senescence phenotypes, in which circWDR37 is a key regulator. CircWDR37 deficiency limits cisplatin or gemcitabine‐induced senescent NPC cells from proliferation, migration, and invasion. Mechanistically, circWDR37 binds to and dimerizes double‐stranded RNA‐activated protein kinase R (PKR) to initiate PKR autophosphorylation and activation. Independent of its kinase activity, phosphorylated PKR induces I‐kappaB kinase beta (IKKβ) phosphorylation, binds to and releases RELA from NF‐κB inhibitor alpha (IκBα) to trigger nuclear factor kappa B (NF‐κB) activation, thereby stimulating cyclin D1 (CCND1) and senescence‐associated secretory phenotype component gene transcription in a circWDR37‐dependent manner. Low circWDR37 levels correlate with chemotherapy response and favorable survival in NPC patients treated with gemcitabine or cisplatin induction chemotherapy. This study uncovers a new mechanism of circWDR37 activated PKR in senescence‐driven metastasis and provides appealing therapeutic targets in NPC.
- 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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Chemotherapy‐Induced Senescence Reprogramming Promotes Nasopharyngeal Carcinoma Metastasis by circRNA‐Mediated PKR Activation ; day:22 ; month:01 ; year:2023 ; extent:20
Advanced science ; (22.01.2023) (gesamt 20)
- Urheber
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Li, Qian
Zhao, Yu‐Heng
Xu, Cheng
Liang, Ye‐Lin
Zhao, Yin
He, Qing‐Mei
Li, Jun‐Yan
Chen, Kai‐Lin
Qiao, Han
Liu, Na
Ma, Jun
Chen, Lei
Li, Ying‐Qin
- DOI
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10.1002/advs.202205668
- URN
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urn:nbn:de:101:1-2023012314135734099490
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:39 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Li, Qian
- Zhao, Yu‐Heng
- Xu, Cheng
- Liang, Ye‐Lin
- Zhao, Yin
- He, Qing‐Mei
- Li, Jun‐Yan
- Chen, Kai‐Lin
- Qiao, Han
- Liu, Na
- Ma, Jun
- Chen, Lei
- Li, Ying‐Qin
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