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Chen H, Hu K, Xie Y, Qi Y, Li W, He Y, Fan S, Liu W, Li C. CDK1 Promotes Epithelial–Mesenchymal Transition and Migration of Head and Neck Squamous Carcinoma Cells by Repressing ∆Np63α-Mediated Transcriptional Regulation. Int J Mol Sci 2022; 23:ijms23137385. [PMID: 35806389 PMCID: PMC9266818 DOI: 10.3390/ijms23137385] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 02/06/2023] Open
Abstract
∆Np63α is a key transcription factor overexpressed in types of squamous cell carcinomas (SCCs), which represses epithelial–mesenchymal transition (EMT) and cell migration. In this study, we found that CDK1 phosphorylates ∆Np63α at the T123 site, impairing its affinity to the target promoters of its downstream genes and its regulation of them in turn. Database analysis revealed that CDK1 is overexpressed in head and neck squamous cell carcinomas (HNSCCs), especially the metastatic HNSCCs, and is negatively correlated with overall survival. We further found that CDK1 promotes the EMT and migration of HNSCC cells by inhibiting ∆Np63α. Altogether, our study identified CDK1 as a novel regulator of ΔNp63α, which can modulate EMT and cell migration in HNSCCs. Our findings will help to elucidate the migration mechanism of HNSCC cells.
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Affiliation(s)
- Huimin Chen
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China; (H.C.); (K.H.); (Y.X.); (Y.Q.); (S.F.)
| | - Ke Hu
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China; (H.C.); (K.H.); (Y.X.); (Y.Q.); (S.F.)
| | - Ying Xie
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China; (H.C.); (K.H.); (Y.X.); (Y.Q.); (S.F.)
| | - Yucheng Qi
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China; (H.C.); (K.H.); (Y.X.); (Y.Q.); (S.F.)
| | - Wenjuan Li
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China; (W.L.); (Y.H.); (W.L.)
| | - Yaohui He
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China; (W.L.); (Y.H.); (W.L.)
| | - Shijie Fan
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China; (H.C.); (K.H.); (Y.X.); (Y.Q.); (S.F.)
| | - Wen Liu
- State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China; (W.L.); (Y.H.); (W.L.)
| | - Chenghua Li
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China; (H.C.); (K.H.); (Y.X.); (Y.Q.); (S.F.)
- Correspondence:
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Fan X, He W, Hu K, Chen H, Chen L, Fan S, Li C. Pin1 and JNK1 cooperatively modulate TAp63γ. FEBS Open Bio 2021; 11:890-897. [PMID: 33548094 PMCID: PMC7931219 DOI: 10.1002/2211-5463.13109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 12/27/2020] [Accepted: 02/04/2021] [Indexed: 12/02/2022] Open
Abstract
The p63 gene encodes at least 10 isoforms, which can be classified into TA and ∆N isotypes (TAp63 and ∆Np63 proteins) according to their differences at the N termini. TAp63γ is an important transcription factor. We previously reported that peptidyl‐prolyl isomerase (PPI) Pin1 directly binds to TAp63γ protein and identified that serine 12 (S12) in the transactivation domain (TAD) of TAp63γ is required for regulation of its transcriptional activity. In the present study, we report that Pin1 stimulates transcriptional and pro‐apoptotic activities of TAp63γ; this Pin1‐mediated stimulation may depend on phosphorylation of S12 mediated by JNK1 and results in striking activation of TAp63γ. JNK1 represses transactivity of TAp63γ in cells without abundant Pin1 proteins and enhances it in the presence of sufficient levels of Pin1. Collectively, our data suggest a novel mechanism for regulation of TAp63γ transactivity: TAp63γ with unphosphorylated S12 is moderately active, phosphorylation at this residue (pS12) makes it hypoactive, and Pin1 binds to the pS12‐P13 motif and makes TAp63γ hyperactive. Our findings will aid in the elucidation of the mechanism underlying modulation of TAp63γ.
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Affiliation(s)
- Xueying Fan
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Wei He
- Department of Hepato-Pancreato-Biliary Surgery, 363 Hospital, Chengdu, China
| | - Ke Hu
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Huimin Chen
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Li Chen
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Shijie Fan
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Chenghua Li
- Center of Growth, Metabolism and Aging, Key Laboratory of Biological Resources and Ecological Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
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He H, Peng Y, Fan S, Chen Y, Zheng X, Li C. Cullin3/KCTD5 induces monoubiquitination of ΔNp63α and impairs its activity. FEBS Lett 2018; 592:2334-2340. [PMID: 29782646 DOI: 10.1002/1873-3468.13104] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/26/2018] [Accepted: 05/09/2018] [Indexed: 11/06/2022]
Abstract
Potassium channel tetramerization domain containing 5 (KCTD5) was previously documented as a component of the Cullin3-RING ligase (CRL3). It has been reported that KCTD5 can induce enrichment of polyubiquitinated proteins, and KCTD5-based CRL3 destabilizes several proteins. In our present study, we report that KCTD5 may physically interact with ΔNp63α, which is a member of the p53 family. Our further investigation revealed that Cullin3/KCTD5 can induce monoubiquitination of ΔNp63α. Cullin3/KCTD5 downregulates the DNA-binding affinity of ΔNp63α, impairing either its transactivity or its transinhibitory activity. Functionally, Cullin3/KCTD5 abates the proproliferation activity of ΔNp63α. These findings suggest that KCTD5-based CRL3 may mediate monoubiquitination and is a novel regulator of ΔNp63α.
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Affiliation(s)
- Hanbing He
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Yougong Peng
- Department of General Surgery, The Second People's Hospital of Jingmen, China
| | - Shijie Fan
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Yonglong Chen
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Xuan Zheng
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Chenghua Li
- Center of Growth, Metabolism and Aging, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
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