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Wang Q, Lu W, Lu L, Wu R, Wu D. miR-575/RIPK4 axis modulates cell cycle progression and proliferation by inactivating the Wnt/β-catenin signaling pathway through inhibiting RUNX1 in colon cancer. Mol Cell Biochem 2024; 479:1747-1766. [PMID: 38480605 DOI: 10.1007/s11010-024-04938-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 01/10/2024] [Indexed: 07/18/2024]
Abstract
Receptor interacting protein serine/threonine kinase 4 (RIPK4) is widely involved in human cancer development. Nevertheless, its role in colon cancer (COAD) has not been elucidated till now. Our research aimed at exploring the function and underlying molecular mechanism of RIPK4 in COAD progression. Through bioinformatic analyses and RT-qPCR, RIPK4 was discovered to be increased in COAD cells and tissues, and its high level predicted poor prognosis. Loss-of-function assays revealed that RIPK4 silencing suppressed COAD cell growth, induced cell cycle arrest, and enhanced cell apoptosis. In vivo experiments also proved that tumor growth was inhibited by silencing of RIPK4. Luciferase reporter assay validated that RIPK4 was targeted and negatively regulated by miR-575. Western blotting demonstrated that Wnt3a, phosphorylated (p)-GSK-3β, and cytoplasmic and nuclear β-catenin protein levels, β-catenin nuclear translocation, and Cyclin D1, CDK4, Cyclin E, and c-Myc protein levels were reduced by RIPK4 knockdown, which however was reversed by treatment with LiCl, the Wnt/β-catenin pathway activator. LiCl also offset the influence of RIPK4 knockdown on COAD cell growth, cell cycle process, and apoptosis. Finally, RIPK4 downregulation reduced RUNX1 level, which was upregulated in COAD and its high level predicted poor prognosis. RIPK4 is positively associated with RUNX1 in COAD. Overexpressing RUNX1 antagonized the suppression of RIPK4 knockdown on RUNX1, Wnt3a, p-GSK-3β, cytoplasmic β-catenin, nuclear β-catenin, Cyclin D1, CDK4, Cyclin E, and c-Myc levels. Collectively, miR-575/RIPK4 axis repressed COAD progression via inactivating the Wnt/β-catenin pathway through downregulating RUNX1.
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Affiliation(s)
- Qun Wang
- Department of Hepatopancreatobiliary Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 16 Zhuodaoquan South Road, Hongshan District, Wuhan, 430079, China.
- Colorectal Cancer Clinical Research Center of Wuhan, Wuhan, 430079, China.
- Colorectal Cancer Clinical Research Center of Hubei Province, Wuhan, 430079, China.
| | - Weijun Lu
- Department of Hepatopancreatobiliary Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 16 Zhuodaoquan South Road, Hongshan District, Wuhan, 430079, China
- Colorectal Cancer Clinical Research Center of Wuhan, Wuhan, 430079, China
| | - Li Lu
- Colorectal Cancer Clinical Research Center of Wuhan, Wuhan, 430079, China
- Department of Gastrointestinal Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430079, China
| | - Ruopu Wu
- Tianjin Medical University, Tianjin, 300070, China
| | - Dongde Wu
- Department of Hepatopancreatobiliary Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 16 Zhuodaoquan South Road, Hongshan District, Wuhan, 430079, China.
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Urwyler-Rösselet C, Tanghe G, Devos M, Hulpiau P, Saeys Y, Declercq W. Functions of the RIP kinase family members in the skin. Cell Mol Life Sci 2023; 80:285. [PMID: 37688617 PMCID: PMC10492769 DOI: 10.1007/s00018-023-04917-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/08/2023] [Accepted: 08/08/2023] [Indexed: 09/11/2023]
Abstract
The receptor interacting protein kinases (RIPK) are a family of serine/threonine kinases that are involved in the integration of various stress signals. In response to several extracellular and/or intracellular stimuli, RIP kinases engage signaling cascades leading to the activation of NF-κB and mitogen-activated protein kinases, cell death, inflammation, differentiation and Wnt signaling and can have kinase-dependent and kinase-independent functions. Although it was previously suggested that seven RIPKs are part of the RIPK family, phylogenetic analysis indicates that there are only five genuine RIPKs. RIPK1 and RIPK3 are mainly involved in controlling and executing necroptosis in keratinocytes, while RIPK4 controls proliferation and differentiation of keratinocytes and thereby can act as a tumor suppressor in skin. Therefore, in this review we summarize and discuss the functions of RIPKs in skin homeostasis as well as the signaling pathways involved.
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Affiliation(s)
- Corinne Urwyler-Rösselet
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, 8093, Zurich, Switzerland
| | - Giel Tanghe
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
| | - Michael Devos
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
| | - Paco Hulpiau
- VIB Center for Inflammation Research, Ghent, Belgium
- Howest University of Applied Sciences, Brugge, Belgium
| | - Yvan Saeys
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics and Computer Science, Ghent University, Ghent, Belgium
| | - Wim Declercq
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
- VIB Center for Inflammation Research, Ghent, Belgium.
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The NOTCH-RIPK4-IRF6-ELOVL4 Axis Suppresses Squamous Cell Carcinoma. Cancers (Basel) 2023; 15:cancers15030737. [PMID: 36765696 PMCID: PMC9913669 DOI: 10.3390/cancers15030737] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/03/2023] [Accepted: 01/18/2023] [Indexed: 01/27/2023] Open
Abstract
Receptor-interacting serine/threonine protein kinase 4 (RIPK4) and its kinase substrate the transcription factor interferon regulatory factor 6 (IRF6) play critical roles in the development and maintenance of the epidermis. In addition, ourselves and others have previously shown that RIPK4 is a NOTCH target gene that suppresses the development of cutaneous and head and neck squamous cell carcinomas (HNSCCs). In this study, we used autochthonous mouse models, where the expression of Pik3caH1047R oncogene predisposes the skin and oral cavity to tumor development, and show that not only loss of Ripk4, but also loss of its kinase substrate Irf6, triggers rapid SCC development. In vivo rescue experiments using Ripk4 or a kinase-dead Ripk4 mutant showed that the tumor suppressive function of Ripk4 is dependent on its kinase activity. To elucidate critical mediators of this tumor suppressive pathway, we performed transcriptional profiling of Ripk4-deficient epidermal cells followed by multiplexed in vivo CRISPR screening to identify genes with tumor suppressive capabilities. We show that Elovl4 is a critical Notch-Ripk4-Irf6 downstream target gene, and that Elovl4 loss itself triggers SCC development. Importantly, overexpression of Elovl4 suppressed tumor growth of Ripk4-deficient keratinocytes. Altogether, our work identifies a potent Notch1-Ripk4-Irf6-Elovl4 tumor suppressor axis.
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Fortugno P, Monetta R, Belli M, Botti E, Angelucci F, Palmerini MG, Annarita NS, De Luca C, Ceccarini M, Salvatore M, Bianchi L, Macioce P, Teson M, Ricci F, Network IUD, Macchiarelli G, Didona B, Costanzo A, Castiglia D, Brancati F. RIPK4 regulates cell–cell adhesion in epidermal development and homeostasis. Hum Mol Genet 2022; 31:2535-2547. [DOI: 10.1093/hmg/ddac046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 02/01/2022] [Accepted: 02/22/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
Epidermal development and maintenance are finely regulated events requiring a strict balance between proliferation and differentiation. Alterations in these processes give rise to human disorders such as cancer or syndromes with skin and annexes defects, known as ectodermal dysplasias (EDs). Here, we studied the functional effects of two novel receptor-interacting protein kinase 4 (RIPK4) missense mutations identified in siblings with an autosomal recessive ED with cutaneous syndactyly, palmoplantar hyperkeratosis and orofacial synechiae. Clinical overlap with distinct EDs caused by mutations in transcription factors (i.e. p63 and interferon regulatory factor 6, IRF6) or nectin adhesion molecules was noticed. Impaired activity of the RIPK4 kinase resulted both in altered epithelial differentiation and defective cell adhesion. We showed that mutant RIPK4 resulted in loss of PVRL4/nectin-4 expression in patient epidermis and primary keratinocytes, and demonstrated that PVRL4 is transcriptionally regulated by IRF6, a RIPK4 phosphorylation target. In addition, defective RIPK4 altered desmosome morphology through modulation of plakophilin-1 and desmoplakin. In conclusion, this work implicates RIPK4 kinase function in the p63-IRF6 regulatory loop that controls the proliferation/differentiation switch and cell adhesion, with implications in ectodermal development and cancer.
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Affiliation(s)
- Paola Fortugno
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
- Human Functional Genomics, IRCCS San Raffaele Roma, 00163 Rome, Italy
| | - Rosanna Monetta
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | | | - Elisabetta Botti
- Dermatology Unit, Department of Systems Medicine, Tor Vergata University of Rome, 00133 Rome, Italy
| | - Francesco Angelucci
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Maria Grazia Palmerini
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Nottola Stefania Annarita
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University, 00185 Rome, Italy
| | - Chiara De Luca
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Marina Ceccarini
- National Center Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| | - Marco Salvatore
- National Center Rare Diseases, Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| | - Luca Bianchi
- Dermatology Unit, Department of Systems Medicine, Tor Vergata University of Rome, 00133 Rome, Italy
| | - Pompeo Macioce
- Department of Neurosciences & Undiagnosed Rare Diseases Interdepartmental Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| | - Massimo Teson
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell’Immacolata, IDI-IRCCS, 00167 Rome, Italy
| | - Francesco Ricci
- Department of Dermatology, Istituto Dermopatico dell’Immacolata, IDI-IRCCS, 00167 Rome, Italy
| | | | - Guido Macchiarelli
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Biagio Didona
- Rare Skin Disease Center, Istituto Dermopatico dell’Immacolata, IDI-IRCCS, 00167 Rome, Italy
| | - Antonio Costanzo
- Department of Biomedical Sciences, Humanitas University, 20090 Pieve Emanuele, Milan, Italy
- Skin Pathology Laboratory, IRCCS Humanitas Research Hospital, 20089 Rozzano, Milan, Italy
| | - Daniele Castiglia
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell’Immacolata, IDI-IRCCS, 00167 Rome, Italy
| | - Francesco Brancati
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
- Human Functional Genomics, IRCCS San Raffaele Roma, 00163 Rome, Italy
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Xu J, Wu D, Zhang B, Pan C, Guo Y, Wei Q. Depletion of RIPK4 parallels higher malignancy potential in cutaneous squamous cell carcinoma. PeerJ 2022; 10:e12932. [PMID: 35186499 PMCID: PMC8841032 DOI: 10.7717/peerj.12932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/23/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The RIPK4 (receptor-interacting protein kinase 4), a member of the RIPK family, acts as an important regulator of epidermal differentiation, cutaneous inflammation, and cutaneous wound repair. However, Until now, the role of RIPK4 in tumorigenesis remains elusive. There have been no studies exploring the effects of RIPK4 on the signaling pathway in cutaneous squamous cell carcinoma (SCC). It remains unknown whether RIPK4 expression, which can affect the degree of epidermal differentiation can also influence the radiosensitivity of skin SCC. It is urgent to fully elucidate the biological mechanism by which RIPK4 promotes carcinogenesis in skin SCC and determine whether RIPK4 expression levels predicts the sensitivity to radiotherapy in skin SCC. METHODS Human skin SCC cell line, A431, was transfected with either small interfering RNAs (siRNAs) targeting RIPK4 (siR-RIPK4) or negative control siRNA (siR-NC). Western blotting was used to detect the expression of RIPK4 and Raf/MEK/ERK pathway-related proteins. The cells were irradiated using an X-ray irradiator at 6 MV with different radiation doses (0, 2, 6, and 10 Gy). Cell proliferation analysis, colony formation assay, transwell cell migration and invasion assay, cell cycle and apoptosis analysis were conducted to investigate the effect of RIPK4 silencing on skin SCC malignancy and radiosensitivity. RESULTS RIPK4 protein expression was significantly decreased in the A431 cells transfected with siR-RIPK4, compared with the A431 cells transfected with siR-NC. RIPK4 silencing facilitated the proliferation, colony formation, migration, and invasion ability of A431 cell line, while cell cycle progression or cell apoptosis were not significantly influenced. In contrast with the previous literature, Raf/MEK/ERK pathway was not effected by RIPK4 knockdown in skin SCC. RIPK4 knockdown could not reverse the radiation resistance of A431 cells to irradiation in vitro. CONCLUSIONS In general, although depletion of RIPK4 cannot reverse the radiation resistance of A431 cells in vitro, it parallels higher malignancy potential in cutaneous SCC. To our knowledge, this is the first report of the effects of RIPK4 expression on the Raf/MEK/ERK signaling pathway and radiosensitivity in cutaneous SCC. The better understanding of the molecular mechanism of RIPK4 in cutaneous SCC may provide a promising biomarker for skin SCC prognosis and treatment.
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Affiliation(s)
- Jing Xu
- Department of Radiation Oncology, The Second Affiliated Hospital and Cancer Institute (National Ministry of Education Key Laboratory of Cancer Prevention and Intervention), Zhejiang University School of Medicine, Hangzhou, China
| | - Dongping Wu
- Department of Radiation Oncology, Shaoxing People’s Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing, China
| | - Bicheng Zhang
- Department of Radiation Oncology, The Second Affiliated Hospital and Cancer Institute (National Ministry of Education Key Laboratory of Cancer Prevention and Intervention), Zhejiang University School of Medicine, Hangzhou, China
| | - Chi Pan
- Department of Breast Surgey, The Second Affiliated Hospital, Zhejiang University, College of Medicine, Hangzhou, China
| | - Yinglu Guo
- Department of Radiation Oncology, The Second Affiliated Hospital and Cancer Institute (National Ministry of Education Key Laboratory of Cancer Prevention and Intervention), Zhejiang University School of Medicine, Hangzhou, China
| | - Qichun Wei
- Department of Radiation Oncology, The Second Affiliated Hospital and Cancer Institute (National Ministry of Education Key Laboratory of Cancer Prevention and Intervention), Zhejiang University School of Medicine, Hangzhou, China
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Staal J, Driege Y, Haegman M, Kreike M, Iliaki S, Vanneste D, Lork M, Afonina IS, Braun H, Beyaert R. Defining the combinatorial space of PKC::CARD‐CC signal transduction nodes. FEBS J 2020; 288:1630-1647. [DOI: 10.1111/febs.15522] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 07/12/2020] [Accepted: 07/30/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Jens Staal
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Yasmine Driege
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Mira Haegman
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Marja Kreike
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Styliani Iliaki
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Domien Vanneste
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Marie Lork
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Inna S. Afonina
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Harald Braun
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Rudi Beyaert
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
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Xu J, Wei Q, He Z. Insight Into the Function of RIPK4 in Keratinocyte Differentiation and Carcinogenesis. Front Oncol 2020; 10:1562. [PMID: 32923402 PMCID: PMC7457045 DOI: 10.3389/fonc.2020.01562] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 07/20/2020] [Indexed: 12/22/2022] Open
Abstract
The receptor-interacting protein kinase 4 (RIPK4), a member of the RIPK family, was originally described as an interaction partner of protein kinase C (PKC) β and PKCδ. RIPK4 is identified as a key regulator of keratinocyte differentiation, cutaneous inflammation, and cutaneous wound repair. The mechanism by which RIPK4 integrates upstream signals to initiate specific responses remains elusive. Previous studies have indicated that RIPK4 can regulate several signaling pathways, including the NF-κB, Wnt/β-catenin, and RAF/MEK/ERK pathways. Furthermore, RIPK4-related biological signaling pathways interact with each other to form a complex network. Mounting evidence suggests that RIPK4 is aberrantly expressed in various kinds of cancers. In several types of squamous cell carcinoma (SCC), the mutations that drive aggressive SCC have been found in RIPK4. In addition, the function of RIPK4 in carcinogenesis is probably tissue-specific, since RIPK4 can play a dual role as both a tumor promoter and a tumor suppressor in different tumor types. Therefore, RIPK4 may represent as an independent prognostic factor and a promising novel therapeutic target, which can be used to identify the risks of patients and guide personalized treatments. In future, RIPK4-interacting pathways and precise molecular targets need to be investigated in order to further elucidate the mechanisms underlying epidermal differentiation and carcinogenesis.
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Affiliation(s)
- Jing Xu
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qichun Wei
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhixing He
- Institute of Basic Research in Clinical Medicine, College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
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8
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Dinçer T, Boz Er AB, Er İ, Toraman B, Yildiz G, Kalay E. RIPK4 suppresses the TGF-β1 signaling pathway in HaCaT cells. Cell Biol Int 2019; 44:848-860. [PMID: 31825120 DOI: 10.1002/cbin.11282] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 12/06/2019] [Indexed: 12/15/2022]
Abstract
Receptor-interacting serine/threonine kinase 4 (RIPK4) and transforming growth factor-β 1 (TGF-β1) play critical roles in the development and maintenance of the epidermis. A negative correlation between the expression patterns of RIPK4 and TGF-β signaling during epidermal homeostasis-related events and suppression of RIPK4 expression by TGF-β1 in keratinocyte cell lines suggest the presence of a negative regulatory loop between the two factors. So far, RIPK4 has been shown to regulate nuclear factor-κB (NF-κB), protein kinase C (PKC), wingless-type MMTV integration site family (Wnt), and (mitogen-activated protein kinase) MAPK signaling pathways. In this study, we examined the effect of RIPK4 on the canonical Smad-mediated TGF-β1 signaling pathway by using the immortalized human keratinocyte HaCaT cell line. According to our results, RIPK4 inhibits intracellular Smad-mediated TGF-β1 signaling events through suppression of TGF-β1-induced Smad2/3 phosphorylation, which is reflected in the upcoming intracellular events including Smad2/3-Smad4 interaction, nuclear localization, and TGF-β1-induced gene expression. Moreover, the kinase activity of RIPK4 is required for this process. The in vitro wound-scratch assay demonstrated that RIPK4 suppressed TGF-β1-mediated wound healing through blocking TGF-β1-induced cell migration. In conclusion, our results showed the antagonistic effect of RIPK4 on TGF-β1 signaling in keratinocytes for the first time and have the potential to contribute to the understanding and treatment of skin diseases associated with aberrant TGF-β1 signaling.
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Affiliation(s)
- Tuba Dinçer
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Asiye Büşra Boz Er
- Department of Medical Biology, Institute of Health Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - İdris Er
- Department of Medical Biology, Institute of Health Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Bayram Toraman
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Gokhan Yildiz
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Ersan Kalay
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, 61080, Trabzon, Turkey
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9
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Strowitzki MJ, Cummins EP, Taylor CT. Protein Hydroxylation by Hypoxia-Inducible Factor (HIF) Hydroxylases: Unique or Ubiquitous? Cells 2019; 8:cells8050384. [PMID: 31035491 PMCID: PMC6562979 DOI: 10.3390/cells8050384] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 04/24/2019] [Accepted: 04/24/2019] [Indexed: 02/07/2023] Open
Abstract
All metazoans that utilize molecular oxygen (O2) for metabolic purposes have the capacity to adapt to hypoxia, the condition that arises when O2 demand exceeds supply. This is mediated through activation of the hypoxia-inducible factor (HIF) pathway. At physiological oxygen levels (normoxia), HIF-prolyl hydroxylases (PHDs) hydroxylate proline residues on HIF-α subunits leading to their destabilization by promoting ubiquitination by the von-Hippel Lindau (VHL) ubiquitin ligase and subsequent proteasomal degradation. HIF-α transactivation is also repressed in an O2-dependent way due to asparaginyl hydroxylation by the factor-inhibiting HIF (FIH). In hypoxia, the O2-dependent hydroxylation of HIF-α subunits by PHDs and FIH is reduced, resulting in HIF-α accumulation, dimerization with HIF-β and migration into the nucleus to induce an adaptive transcriptional response. Although HIFs are the canonical substrates for PHD- and FIH-mediated protein hydroxylation, increasing evidence indicates that these hydroxylases may also have alternative targets. In addition to PHD-conferred alterations in protein stability, there is now evidence that hydroxylation can affect protein activity and protein/protein interactions for alternative substrates. PHDs can be pharmacologically inhibited by a new class of drugs termed prolyl hydroxylase inhibitors which have recently been approved for the treatment of anemia associated with chronic kidney disease. The identification of alternative targets of HIF hydroxylases is important in order to fully elucidate the pharmacology of hydroxylase inhibitors (PHI). Despite significant technical advances, screening, detection and verification of alternative functional targets for PHDs and FIH remain challenging. In this review, we discuss recently proposed non-HIF targets for PHDs and FIH and provide an overview of the techniques used to identify these.
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Affiliation(s)
- Moritz J Strowitzki
- UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Eoin P Cummins
- UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Cormac T Taylor
- UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland.
- Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland.
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10
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Li YR, Peng RR, Gao WY, Liu P, Chen LJ, Zhang XL, Zhang NN, Wang Y, Du L, Zhu FY, Wang LL, Li CR, Zeng WT, Li JM, Hu F, Zhang D, Yang ZX. The ubiquitin ligase KBTBD8 regulates PKM1 levels via Erk1/2 and Aurora A to ensure oocyte quality. Aging (Albany NY) 2019; 11:1110-1128. [PMID: 30786262 PMCID: PMC6402520 DOI: 10.18632/aging.101802] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 01/24/2019] [Indexed: 12/14/2022]
Abstract
Tight control of energy metabolism is essential for normal cell function and organism survival. PKM (pyruvate kinase, muscle) isoforms 1 and 2 originate from alternative splicing of PKM pre-mRNA. They are key enzymes in oxidative phosphorylation and aerobic glycolysis, respectively, and are essential for ATP generation. The PKM1:PKM2 expression ratio changes with development and differentiation, and may also vary under metabolic stress and other conditions. Until now, there have been no reports about the function and regulation of PKM isozymes in oocytes. Here, we demonstrate that PKM1 or PKM2 depletion significantly disrupts ATP levels and mitochondrial integrity, and exacerbates free-radical generation and apoptosis in mouse oocytes. We also show that KBTBD8, a female fertility factor in the KBTBD ubiquitin ligase family, selectively regulates PKM1 levels through a signaling cascade that includes Erk1/2 and Aurora A kinases as intermediates. Finally, using RNA sequencing and protein network analysis, we identify several regulatory proteins that may be govern generation of mature PKM1 mRNA. These results suggest KBTBD8 affects PKM1 levels in oocytes via a KBTBD8→Erk1/2→Aurora A axis, and may also affect other essential processes involved in maintaining oocyte quality.
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Affiliation(s)
- Yan-Ru Li
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
- Equal contribution
| | - Rui-Rui Peng
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
- Equal contribution
| | - Wen-Yi Gao
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
- Equal contribution
| | - Peng Liu
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
- Reproductive Medical Center, Huzhou Maternity and Child Health Care Hospital, Huzhou 313000, Zhejiang, P.R. China
- Equal contribution
| | - Liang-Jian Chen
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
- Equal contribution
| | - Xiao-Lan Zhang
- Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, P.R. China
- Equal contribution
| | - Na-Na Zhang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Yang Wang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Lei Du
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
- Department of Center for Medical Experiments, Third Xiang-Ya Hospital of Central South University, Changsha 410013, Hunan, P.R. China
| | - Feng-Yu Zhu
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Li-Li Wang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Cong-Rong Li
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Wen-Tao Zeng
- Animal Core Facility, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Jian-Min Li
- Animal Core Facility, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Fan Hu
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Dong Zhang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
| | - Zhi-Xia Yang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, Jiangsu, P.R. China
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11
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Gong Y, Luo X, Yang J, Jiang Q, Liu Z. RIPK4 promoted the tumorigenicity of nasopharyngeal carcinoma cells. Biomed Pharmacother 2018; 108:1-6. [PMID: 30212707 DOI: 10.1016/j.biopha.2018.08.147] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 08/27/2018] [Accepted: 08/28/2018] [Indexed: 11/16/2022] Open
Abstract
RIPK4 (receptor interacting serine/threonine kinase 4) has been reported to be aberrantly expressed in several cancer types. However, its expression pattern and functions in nasopharyngeal carcinoma (NPC) have never been reported. In this study, we have shown that the expression of RIPK4 was up-regulated in NPC tissues. RIPK4 promoted the growth and anchorage-independent growth of NPC cells, and down-regulation of RIPK4 inhibited the growth of NPC cells both in the plate-based culture and on the soft agar. Moreover, RIPK4 promoted the expression of VEGF in the NPC cells and induced the tube formation of HUVEC, and Axitinib (the inhibitor for VEGF receptor) inhibited the tumorigenesis driven by RIPK4. In the molecular mechanism study, RIPK4 was found to enhance the interaction between IKKα and IKKβ, and activated NF-kB signaling. Taken together, our study demonstrated the oncogenic roles of RIPK4 in NPC and suggested that RIPK4 might be a therapeutic target.
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Affiliation(s)
- Yongqian Gong
- Department of Otorhinolaryngology, The First Affiliated Hospital of University of South China, Hengyang, 421001, Hunan Province, China
| | - Xinggu Luo
- Department of Otorhinolaryngology, The First Affiliated Hospital of University of South China, Hengyang, 421001, Hunan Province, China
| | - Jing Yang
- Department of Gastroenterology, The First Affiliated Hospital of University of South China, Hengyang, 421001, Hunan Province, China
| | - Qingshan Jiang
- Department of Otorhinolaryngology, The First Affiliated Hospital of University of South China, Hengyang, 421001, Hunan Province, China
| | - Zhifeng Liu
- Department of Otorhinolaryngology, The First Affiliated Hospital of University of South China, Hengyang, 421001, Hunan Province, China.
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