1
|
Totland MZ, Knudsen LM, Rasmussen NL, Omori Y, Sørensen V, Elster VCW, Stenersen JM, Larsen M, Jensen CL, Zickfeldt Lade AA, Bruusgaard E, Basing S, Kryeziu K, Brech A, Aasen T, Lothe RA, Leithe E. The E3 ubiquitin ligase ITCH negatively regulates intercellular communication via gap junctions by targeting connexin43 for lysosomal degradation. Cell Mol Life Sci 2024; 81:171. [PMID: 38597989 PMCID: PMC11006747 DOI: 10.1007/s00018-024-05165-8] [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: 01/10/2023] [Revised: 01/27/2024] [Accepted: 02/05/2024] [Indexed: 04/11/2024]
Abstract
Intercellular communication via gap junctions has a fundamental role in regulating cell growth and tissue homeostasis, and its dysregulation may be involved in cancer development and radio- and chemotherapy resistance. Connexin43 (Cx43) is the most ubiquitously expressed gap junction channel protein in human tissues. Emerging evidence indicates that dysregulation of the sorting of Cx43 to lysosomes is important in mediating the loss of Cx43-based gap junctions in cancer cells. However, the molecular basis underlying this process is currently poorly understood. Here, we identified the E3 ubiquitin ligase ITCH as a novel regulator of intercellular communication via gap junctions. We demonstrate that ITCH promotes loss of gap junctions in cervical cancer cells, which is associated with increased degradation of Cx43 in lysosomes. The data further indicate that ITCH interacts with and regulates Cx43 ubiquitination and that the ITCH-induced loss of Cx43-based gap junctions requires its catalytic HECT (homologous to E6-AP C-terminus) domain. The data also suggest that the ability of ITCH to efficiently promote loss of Cx43-based gap junctions and degradation of Cx43 depends on a functional PY (PPXY) motif in the C-terminal tail of Cx43. Together, these data provide new insights into the molecular basis underlying the degradation of Cx43 and have implications for the understanding of how intercellular communication via gap junctions is lost during cancer development.
Collapse
Affiliation(s)
- Max Zachrisson Totland
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Lars Mørland Knudsen
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Nikoline Lander Rasmussen
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
- Centre for Molecular Medicine Norway, Faculty of Medicine, Oslo, Norway
| | - Yasufumi Omori
- Department of Molecular and Tumour Pathology, Akita University Graduate School of Medicine, Akita, 010-8543, Japan
| | - Vigdis Sørensen
- Department of Core Facilities, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
- Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Oslo, 0379, Norway
| | - Vilde C Wivestad Elster
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Jakob Mørkved Stenersen
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Mathias Larsen
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Caroline Lunder Jensen
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Anna A Zickfeldt Lade
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Emilie Bruusgaard
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Sebastian Basing
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Kushtrim Kryeziu
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| | - Andreas Brech
- Department of Core Facilities, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, 0379, Norway
- Department of Biosciences, Faculty of Mathematics and Natural Sciences, Oslo, 0316, Norway
| | - Trond Aasen
- Patologia Molecular Translacional, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, Barcelona, 08035, Spain
| | - Ragnhild A Lothe
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
- Department of Biosciences, Faculty of Mathematics and Natural Sciences, Oslo, 0316, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, 0317, Norway
| | - Edward Leithe
- Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, NO-0424, Norway
| |
Collapse
|
2
|
Zhao W, Li Y, Cheng H, Wang M, Zhang Z, Cai M, Zhao C, Xi X, Zhao X, Zhao W, Yang Y, Shao R. Myofibrillogenesis Regulator-1 Regulates the Ubiquitin Lysosomal Pathway of Notch3 Intracellular Domain Through E3 Ubiquitin-Protein Ligase Itchy Homolog in the Metastasis of Non-Small Cell Lung Cancer. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306472. [PMID: 38342606 PMCID: PMC11022719 DOI: 10.1002/advs.202306472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 12/28/2023] [Indexed: 02/13/2024]
Abstract
Myofibrillogenesis regulator-1 (MR-1) is a multifunctional protein involved in the development of various human tumors. The study is the first to report the promoting effect of MR-1 on the development and metastasis of non-small cell lung cancer (NSCLC). MR-1 is upregulated in NSCLC and positively associated with poor prognosis. The overexpression of MR-1 promotes the metastasis of NSCLC cells by stabilizing the expression of Notch3-ICD (NICD3) in the cytoplasm through enrichment analysis, in vitro and in vivo experimental researches. And Notch3 signaling can upregulate many genes related to metastasis. The stabilizing effect of MR-1 on NICD3 is achieved through the mono-ubiquitin lysosomal pathway and the specific E3 ubiquitin ligase is Itchy homolog (ITCH). There is a certain interaction between MR-1 and NICD3. Elevated MR-1 can affect the level of ITCH phosphorylation, reduce its E3 enzyme activity, and thus lead to reduce the ubiquitination and degradation of NICD3. Interference with the interaction between MR-1 and NICD3 can increase the degradation of NICD3 and impair the metastatic ability of NSCLC cells, which is a previously overlooked treatment option in NSCLC. In summary, interference with the interaction between MR-1 and NICD3 in the progression of lung cancer may be a promising therapeutic target.
Collapse
Affiliation(s)
- Wenxia Zhao
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
| | - Yang Li
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
| | - Hanzeng Cheng
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia MedicaPeking Union Medical College and Chinese Academy of Medical SciencesBeijing100050P. R. China
| | - Mengyan Wang
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
- Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong510280P. R. China
| | - Zhishuo Zhang
- Department of EmergencyXinhua HospitalShanghai Jiaotong University School of MedicineShanghai200092P. R. China
- Department of Organ Transplantation and Hepatobiliary SurgeryThe First Hospital of China Medical UniversityShenyangLiaoning110001P. R. China
| | - Meilian Cai
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
| | - Cong Zhao
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
| | - Xiaoming Xi
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
| | - Xiaojun Zhao
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
| | - Wuli Zhao
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
| | - Yajun Yang
- Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia MedicaPeking Union Medical College and Chinese Academy of Medical SciencesBeijing100050P. R. China
| | - Rongguang Shao
- NHC Key Laboratory of Antibiotic Bioengineering, Laboratory of OncologyInstitute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Beijing100050BeijingP. R. China
| |
Collapse
|
3
|
Xiao Y, Liu R, Li N, Li Y, Huang X. Role of the ubiquitin-proteasome system on macrophages in the tumor microenvironment. J Cell Physiol 2024; 239:e31180. [PMID: 38219045 DOI: 10.1002/jcp.31180] [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: 09/06/2023] [Revised: 11/14/2023] [Accepted: 12/12/2023] [Indexed: 01/15/2024]
Abstract
Tumor-associated macrophages (TAMs) are key components of the tumor microenvironment, and their different polarization states play multiple roles in tumors by secreting cytokines, chemokines, and so on, which are closely related to tumor development. In addition, the enrichment of TAMs is often associated with poor prognosis of tumors. Thus, targeting TAMs is a potential tumor treatment strategy, in which therapeutic approaches such as reducing TAMs numbers, remodeling TAMs phenotypes, and altering their functions are being extensively investigated. Meanwhile, the ubiquitin-proteasome system (UPS), an important mechanism of protein hydrolysis in eukaryotic cells, participates in cellular processes by regulating the activity and stability of key proteins. Interestingly, UPS plays a dual role in the process of tumor development, and its role in TAMs deserve to be investigated in depth. This review builds on this foundation to further explore the multiple roles of UPS on TAMs and identifies a promising approach to treat tumors by targeting TAMs with UPS.
Collapse
Affiliation(s)
- Yue Xiao
- First School of Clinical Medicine, Nanchang University, Nanchang, China
| | - Ruiqian Liu
- School of Future Technology, Nanchang University, Nanchang, China
| | - Na Li
- School of Future Technology, Nanchang University, Nanchang, China
| | - Yong Li
- Department of Anesthesiology, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xuan Huang
- The National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| |
Collapse
|
4
|
Lee KT, Pranoto IKA, Kim SY, Choi HJ, To NB, Chae H, Lee JY, Kim JE, Kwon YV, Nam JW. Comparative interactome analysis of α-arrestin families in human and Drosophila. eLife 2024; 12:RP88328. [PMID: 38270169 PMCID: PMC10945707 DOI: 10.7554/elife.88328] [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] [Indexed: 01/26/2024] Open
Abstract
The α-arrestins form a large family of evolutionally conserved modulators that control diverse signaling pathways, including both G-protein-coupled receptor (GPCR)-mediated and non-GPCR-mediated pathways, across eukaryotes. However, unlike β-arrestins, only a few α-arrestin targets and functions have been characterized. Here, using affinity purification and mass spectrometry, we constructed interactomes for 6 human and 12 Drosophila α-arrestins. The resulting high-confidence interactomes comprised 307 and 467 prey proteins in human and Drosophila, respectively. A comparative analysis of these interactomes predicted not only conserved binding partners, such as motor proteins, proteases, ubiquitin ligases, RNA splicing factors, and GTPase-activating proteins, but also those specific to mammals, such as histone modifiers and the subunits of V-type ATPase. Given the manifestation of the interaction between the human α-arrestin, TXNIP, and the histone-modifying enzymes, including HDAC2, we undertook a global analysis of transcription signals and chromatin structures that were affected by TXNIP knockdown. We found that TXNIP activated targets by blocking HDAC2 recruitment to targets, a result that was validated by chromatin immunoprecipitation assays. Additionally, the interactome for an uncharacterized human α-arrestin ARRDC5 uncovered multiple components in the V-type ATPase, which plays a key role in bone resorption by osteoclasts. Our study presents conserved and species-specific protein-protein interaction maps for α-arrestins, which provide a valuable resource for interrogating their cellular functions for both basic and clinical research.
Collapse
Affiliation(s)
- Kyung-Tae Lee
- Department of Life Science, College of Natural Sciences, Hanyang UniversitySeoulRepublic of Korea
- Hanyang Institute of Advanced BioConvergence, Hanyang UniversitySeoulRepublic of Korea
| | - Inez KA Pranoto
- Department of Biochemistry, University of WashingtonSeattleUnited States
| | - Soon-Young Kim
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National UniversityDaeguRepublic of Korea
| | - Hee-Joo Choi
- Bio-BigData Center, Hanyang Institute for Bioscience and Biotechnology, Hanyang UniversitySeoulRepublic of Korea
- Department of Pathology, College of Medicine, Hanyang UniversitySeoulRepublic of Korea
- Hanyang Biomedical Research Institute, Hanyang UniversitySeoulRepublic of Korea
| | - Ngoc Bao To
- Department of Life Science, College of Natural Sciences, Hanyang UniversitySeoulRepublic of Korea
| | - Hansong Chae
- Department of Life Science, College of Natural Sciences, Hanyang UniversitySeoulRepublic of Korea
| | - Jeong-Yeon Lee
- Bio-BigData Center, Hanyang Institute for Bioscience and Biotechnology, Hanyang UniversitySeoulRepublic of Korea
- Department of Pathology, College of Medicine, Hanyang UniversitySeoulRepublic of Korea
| | - Jung-Eun Kim
- Department of Molecular Medicine, Cell and Matrix Research Institute, School of Medicine, Kyungpook National UniversityDaeguRepublic of Korea
| | - Young V Kwon
- Department of Biochemistry, University of WashingtonSeattleUnited States
| | - Jin-Wu Nam
- Department of Life Science, College of Natural Sciences, Hanyang UniversitySeoulRepublic of Korea
- Hanyang Institute of Advanced BioConvergence, Hanyang UniversitySeoulRepublic of Korea
- Bio-BigData Center, Hanyang Institute for Bioscience and Biotechnology, Hanyang UniversitySeoulRepublic of Korea
| |
Collapse
|
5
|
Deng L, Solichin MR, Adyaksa DNM, Septianastiti MA, Fitri RA, Suwardan GNR, Matsui C, Abe T, Shoji I. Cellular Release of Infectious Hepatitis C Virus Particles via Endosomal Pathways. Viruses 2023; 15:2430. [PMID: 38140670 PMCID: PMC10747773 DOI: 10.3390/v15122430] [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: 11/07/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Hepatitis C virus (HCV) is a positive-sense, single-stranded RNA virus that causes chronic hepatitis, liver cirrhosis and hepatocellular carcinoma. The release of infectious HCV particles from infected hepatocytes is a crucial step in viral dissemination and disease progression. While the exact mechanisms of HCV particle release remain poorly understood, emerging evidence suggests that HCV utilizes intracellular membrane trafficking and secretory pathways. These pathways include the Golgi secretory pathway and the endosomal trafficking pathways, such as the recycling endosome pathway and the endosomal sorting complex required for transport (ESCRT)-dependent multivesicular bodies (MVBs) pathway. This review provides an overview of recent advances in understanding the release of infectious HCV particles, with a particular focus on the involvement of the host cell factors that participate in HCV particle release. By summarizing the current knowledge in this area, this review aims to contribute to a better understanding of endosomal pathways involved in the extracellular release of HCV particles and the development of novel antiviral strategies.
Collapse
Affiliation(s)
- Lin Deng
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
| | - Muchamad Ridotu Solichin
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
- Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Dewa Nyoman Murti Adyaksa
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
- Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Maria Alethea Septianastiti
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
- Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Rhamadianti Aulia Fitri
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
- Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Gede Ngurah Rsi Suwardan
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
- Department of Clinical Microbiology, Faculty of Medicine, Universitas Udayana, Bali 80361, Indonesia
| | - Chieko Matsui
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
| | - Takayuki Abe
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
| | - Ikuo Shoji
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (L.D.); (D.N.M.A.); (M.A.S.); (T.A.)
| |
Collapse
|
6
|
Han Y, Katayama S, Futakuchi M, Nakamichi K, Wakabayashi Y, Sakamoto M, Nakayama J, Semba K. Targeting c-Jun Is a Potential Therapy for Luminal Breast Cancer Bone Metastasis. Mol Cancer Res 2023; 21:908-921. [PMID: 37310848 DOI: 10.1158/1541-7786.mcr-22-0695] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 01/30/2023] [Accepted: 06/08/2023] [Indexed: 06/15/2023]
Abstract
Luminal breast cancer has the highest bone metastasis frequency among all breast cancer subtypes; however, its metastatic mechanism has not been elucidated because of a lack of appropriate models. We have previously developed useful bone metastatic cell lines of luminal breast cancer using MCF7 cells. In this study, we characterized bone metastatic MCF7-BM cell lines and identified c-Jun as a novel bone metastasis marker of luminal breast cancer. The protein level of c-Jun was upregulated in MCF7-BM cells compared with that in parental cells, and its deficiency resulted in the suppression of tumor cell migration, transformation, and reduced osteolytic ability. In vivo, dominant-negative c-Jun exhibited smaller bone metastatic lesions and a lower metastatic frequency. Histologic analysis revealed that c-Jun expression was heterogeneous in bone metastatic lesions, whereas c-Jun overexpression mediated a vicious cycle between MCF7-BM cells and osteoclasts by enhancing calcium-induced migration and releasing the osteoclast activator BMP5. Pharmacological inhibition of c-Jun by the Jun amino-terminal kinase (JNK) inhibitor JNK-IN-8 effectively suppressed tumorigenesis and bone metastasis in MCF7-BM cells. Furthermore, c-Jun downstream signals were specifically correlated with the clinical prognosis of patients with the luminal subtype of breast cancer. Our results illustrate the potential benefits of a therapy that targets c-Jun to prevent bone metastasis in luminal breast cancer. IMPLICATIONS c-Jun expression mediates bone metastasis in luminal breast cancer by forming a vicious cycle in the bone microenvironment, which reveals potential strategies for subtype-specific bone metastasis therapy.
Collapse
Affiliation(s)
- Yuxuan Han
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Shota Katayama
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Mitsuru Futakuchi
- Department of Pathological Diagnostics, Yamagata University, Yamagata, Japan
| | - Kazuya Nakamichi
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Yutaro Wakabayashi
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Mai Sakamoto
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Jun Nakayama
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
- Laboratory of Integrative Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Kentaro Semba
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
- Translational Research Center, Fukushima Medical University, Fukushima, Japan
| |
Collapse
|
7
|
Mancuso G, Bechi Genzano C, Fierabracci A, Fousteri G. Type 1 diabetes and inborn errors of immunity: Complete strangers or 2 sides of the same coin? J Allergy Clin Immunol 2023:S0091-6749(23)00427-X. [PMID: 37097271 DOI: 10.1016/j.jaci.2023.03.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/31/2023] [Accepted: 03/31/2023] [Indexed: 04/26/2023]
Abstract
Type 1 diabetes (T1D) is a polygenic disease and does not follow a mendelian pattern. Inborn errors of immunity (IEIs), on the other hand, are caused by damaging germline variants, suggesting that T1D and IEIs have nothing in common. Some IEIs, resulting from mutations in genes regulating regulatory T-cell homeostasis, are associated with elevated incidence of T1D. The genetic spectrum of IEIs is gradually being unraveled; consequently, molecular pathways underlying human monogenic autoimmunity are being identified. There is an appreciable overlap between some of these pathways and the genetic variants that determine T1D susceptibility, suggesting that after all, IEI and T1D are 2 sides of the same coin. The study of monogenic IEIs with a variable incidence of T1D has the potential to provide crucial insights into the mechanisms leading to T1D. These insights contribute to the definition of T1D endotypes and explain disease heterogeneity. In this review, we discuss the interconnected pathogenic pathways of autoimmunity, β-cell function, and primary immunodeficiency. We also examine the role of environmental factors in disease penetrance as well as the circumstantial evidence of IEI drugs in preventing and curing T1D in individuals with IEIs, suggesting the repositioning of these drugs also for T1D therapy.
Collapse
Affiliation(s)
- Gaia Mancuso
- Unit of Immunology, Rheumatology, Allergy and Rare Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Camillo Bechi Genzano
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University Irving Medical Center, New York, NY
| | | | - Georgia Fousteri
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy.
| |
Collapse
|
8
|
Tsurumi A, Flaherty PJ, Que YA, Ryan CM, Banerjee A, Chakraborty A, Almpani M, Shankar M, Goverman J, Schulz JT, Sheridan RL, Friedstat J, Hickey SA, Tompkins RG, Rahme LG. A PREVENTIVE TOOL FOR PREDICTING BLOODSTREAM INFECTIONS IN CHILDREN WITH BURNS. Shock 2023; 59:393-399. [PMID: 36597771 PMCID: PMC9991965 DOI: 10.1097/shk.0000000000002075] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
ABSTRACT Introduction: Despite significant advances in pediatric burn care, bloodstream infections (BSIs) remain a compelling challenge during recovery. A personalized medicine approach for accurate prediction of BSIs before they occur would contribute to prevention efforts and improve patient outcomes. Methods: We analyzed the blood transcriptome of severely burned (total burn surface area [TBSA] ≥20%) patients in the multicenter Inflammation and Host Response to Injury ("Glue Grant") cohort. Our study included 82 pediatric (aged <16 years) patients, with blood samples at least 3 days before the observed BSI episode. We applied the least absolute shrinkage and selection operator (LASSO) machine-learning algorithm to select a panel of biomarkers predictive of BSI outcome. Results: We developed a panel of 10 probe sets corresponding to six annotated genes ( ARG2 [ arginase 2 ], CPT1A [ carnitine palmitoyltransferase 1A ], FYB [ FYN binding protein ], ITCH [ itchy E3 ubiquitin protein ligase ], MACF1 [ microtubule actin crosslinking factor 1 ], and SSH2 [ slingshot protein phosphatase 2 ]), two uncharacterized ( LOC101928635 , LOC101929599 ), and two unannotated regions. Our multibiomarker panel model yielded highly accurate prediction (area under the receiver operating characteristic curve, 0.938; 95% confidence interval [CI], 0.881-0.981) compared with models with TBSA (0.708; 95% CI, 0.588-0.824) or TBSA and inhalation injury status (0.792; 95% CI, 0.676-0.892). A model combining the multibiomarker panel with TBSA and inhalation injury status further improved prediction (0.978; 95% CI, 0.941-1.000). Conclusions: The multibiomarker panel model yielded a highly accurate prediction of BSIs before their onset. Knowing patients' risk profile early will guide clinicians to take rapid preventive measures for limiting infections, promote antibiotic stewardship that may aid in alleviating the current antibiotic resistance crisis, shorten hospital length of stay and burden on health care resources, reduce health care costs, and significantly improve patients' outcomes. In addition, the biomarkers' identity and molecular functions may contribute to developing novel preventive interventions.
Collapse
Affiliation(s)
- Amy Tsurumi
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA (77 Ave. Louis Pasteur, Boston, MA 02115, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - Patrick J. Flaherty
- Department of Mathematics and Statistics, University of Massachusetts at Amherst (Amherst, MA 01003, USA)
| | - Yok-Ai Que
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland (3010 Bern, Switzerland)
| | - Colleen M. Ryan
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - Ankita Banerjee
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
| | - Arijit Chakraborty
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA (77 Ave. Louis Pasteur, Boston, MA 02115, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - Marianna Almpani
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA (77 Ave. Louis Pasteur, Boston, MA 02115, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - Malavika Shankar
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
| | - Jeremy Goverman
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - John T. Schulz
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - Robert L. Sheridan
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - Jonathan Friedstat
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - Sean A. Hickey
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| | - Ronald G. Tompkins
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
| | - Laurence G. Rahme
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA (50 Blossom St., Their 340, Boston, MA 02114, USA)
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, USA (77 Ave. Louis Pasteur, Boston, MA 02115, USA)
- Shriners Hospitals for Children-Boston, Boston, Massachusetts, USA (51 Blossom St., Boston, MA 02114, USA)
| |
Collapse
|
9
|
Sun A, Tian X, Chen Y, Yang W, Lin Q. Emerging roles of the HECT E3 ubiquitin ligases in gastric cancer. Pathol Oncol Res 2023; 29:1610931. [PMID: 36825281 PMCID: PMC9941164 DOI: 10.3389/pore.2023.1610931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/16/2023] [Indexed: 02/09/2023]
Abstract
Gastric cancer (GC) is one of the most pernicious gastrointestinal tumors with extraordinarily high incidence and mortality. Ubiquitination modification of cellular signaling proteins has been shown to play important roles in GC tumorigenesis, progression, and prognosis. The E3 ubiquitin ligase is the crucial enzyme in the ubiquitination reaction and determines the specificity of ubiquitination substrates, and thus, the cellular effects. The HECT E3 ligases are the second largest E3 ubiquitin ligase family characterized by containing a HECT domain that has E3 ubiquitin ligase activity. The HECT E3 ubiquitin ligases have been found to engage in GC progression. However, whether HECT E3 ligases function as tumor promoters or tumor suppressors in GC remains controversial. In this review, we will focus on recent discoveries about the role of the HECT E3 ubiquitin ligases, especially members of the NEDD4 and other HECT E3 ligase subfamilies, in GC.
Collapse
Affiliation(s)
- Aiqin Sun
- School of Medicine, Jiangsu University, Zhenjiang, China,Department of laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China,*Correspondence: Aiqin Sun, ; Qiong Lin,
| | - Xianyan Tian
- School of Medicine, Jiangsu University, Zhenjiang, China
| | - Yifei Chen
- School of Medicine, Jiangsu University, Zhenjiang, China
| | - Wannian Yang
- School of Medicine, Jiangsu University, Zhenjiang, China
| | - Qiong Lin
- School of Medicine, Jiangsu University, Zhenjiang, China,*Correspondence: Aiqin Sun, ; Qiong Lin,
| |
Collapse
|
10
|
Sharkawi FZE, El-Sherbiny M, Ali SAM, Nassif WMH. The potential value of plasma Circ-ITCH in hepatocellular carcinoma patients with current hepatitis C virus infection. GASTROENTEROLOGIA Y HEPATOLOGIA 2023; 46:17-27. [PMID: 35288234 DOI: 10.1016/j.gastrohep.2022.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 02/18/2022] [Accepted: 03/08/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND There is an obvious need to diagnose hepatocellular carcinoma using novel non-invasive and sensitive biomarkers. Circular RNAs have recently attracted great interest as promising biomarkers and treatment targets. However, their function in hepatocellular carcinoma whose etiology related to hepatitis C has been rarely studied. AIM OF WORK The current study was conducted to analyze differential expression of circ-ITCH in plasma of Egyptian HCC patients with concomitant HCV infection, compared to normal control subjects, to investigate its correlation with liver function parameters, and to determine the possible diagnostic ability of circ-ITCH in plasma as a non-invasive marker, compared to its linear counterpart. RESULTS The results showed that the relative expression of circ-ITCH was significantly higher in the plasma of HCC patients (P<0.05). Moreover, when comparing its expression in the metastatic and non-metastatic subgroups, it was significantly higher in the non-metastatic HCC group compared to control group (P<0.05). Circ-ITCH was positively correlated with liver enzymes AST, ALT (P<0.001), also was significantly higher in HCC child C patients. To evaluate the potential diagnostic value of circ-ITCH in plasma, a ROC curve was generated, the AUC was 0.661, (95% CI: 0.5433-0.778) with a sensitivity and specificity 65% and 70% respectively. CONCLUSION The results revealed that circ-ITCH is-with no doubt-involved in the pathogenesis of HCC and its high level may be related to HCV infection, further researches in this area will certainly make great contributions in understanding. In conclusion our results suggested that circ-ITCH may be used as a noninvasive diagnostic marker and a promising therapeutic target for HCC.
Collapse
Affiliation(s)
- Fathia Zaky El Sharkawi
- Professor at Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| | - Mamdouh El-Sherbiny
- Professor of Medical Oncology, Faculty of Medicine, Beni Suef University, Cairo, Egypt
| | - Sahar Abdel Mohsen Ali
- Professor at Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| | - Walaa M H Nassif
- Assistant Lecturer at Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Helwan University, Cairo, Egypt.
| |
Collapse
|
11
|
Deciphering the Role of p53 and TAp73 in Neuroblastoma: From Pathogenesis to Treatment. Cancers (Basel) 2022; 14:cancers14246212. [PMID: 36551697 PMCID: PMC9777536 DOI: 10.3390/cancers14246212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Neuroblastoma (NB) is an embryonic cancer that develops from neural crest stem cells, being one of the most common malignancies in children. The clinical manifestation of this disease is highly variable, ranging from spontaneous regression to increased aggressiveness, which makes it a major therapeutic challenge in pediatric oncology. The p53 family proteins p53 and TAp73 play a key role in protecting cells against genomic instability and malignant transformation. However, in NB, their activities are commonly inhibited by interacting proteins such as murine double minute (MDM)2 and MDMX, mutant p53, ΔNp73, Itch, and Aurora kinase A. The interplay between the p53/TAp73 pathway and N-MYC, a known biomarker of poor prognosis and drug resistance in NB, also proves to be decisive in the pathogenesis of this tumor. More recently, a strong crosstalk between microRNAs (miRNAs) and p53/TAp73 has been established, which has been the focused of great attention because of its potential for developing new therapeutic strategies. Collectively, this review provides an updated overview about the critical role of the p53/TAp73 pathway in the pathogenesis of NB, highlighting encouraging clues for the advance of alternative NB targeted therapies.
Collapse
|
12
|
Liu T, Huang T, Shang M, Han G. CircRNA ITCH: Insight Into Its Role and Clinical Application Prospect in Tumor and Non-Tumor Diseases. Front Genet 2022; 13:927541. [PMID: 35910224 PMCID: PMC9335290 DOI: 10.3389/fgene.2022.927541] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/21/2022] [Indexed: 11/13/2022] Open
Abstract
CircRNA E3 ubiquitin protein ligase (ITCH) (circRNA ITCH, circ-ITCH), a stable closed-loop RNA derived from the 20q11.22 region of chromosome 20, is a new circRNA discovered in the cytoplasm in recent decades. Studies have shown that it does not encode proteins, but regulates proteins expression at different levels. It is down-regulated in tumor diseases and is involved in a number of biological activities, including inhibiting cell proliferation, migration, invasion, and promoting apoptosis. It can also alter disease progression in non-tumor disease by affecting the cell cycle, inflammatory response, and critical proteins. Circ-ITCH also holds a lot of promise in terms of tumor and non-tumor clinical diagnosis, prognosis, and targeted therapy. As a result, in order to aid clinical research in the hunt for a new strategy for diagnosing and treating human diseases, this study describes the mechanism of circ-ITCH as well as its clinical implications.
Collapse
Affiliation(s)
- Tong Liu
- Department of Gastrointestinal Nutrition and Hernia Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Tao Huang
- Department of Gastrointestinal Nutrition and Hernia Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Mei Shang
- Department of Gastrointestinal Nutrition and Hernia Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Gang Han
- Department of Gastrointestinal Nutrition and Hernia Surgery, The Second Hospital of Jilin University, Changchun, China
| |
Collapse
|
13
|
Sun Q, Wang BB, Wei W, Huang GC, Liu LL, Chen WW, Wang J, Zhao XY, Lu L, Fang R, Zhu CY, Chu XY. ITCH facilitates proteasomal degradation of TXNIP in hypoxia- induced lung cancer cells. Thorac Cancer 2022; 13:2235-2247. [PMID: 35811256 PMCID: PMC9346185 DOI: 10.1111/1759-7714.14552] [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: 04/20/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 11/30/2022] Open
Abstract
Background Lung cancer (LC) is one of the most common cancers and a leading cause of cancer‐related deaths worldwide. In many pathological conditions, particularly in the tumor microenvironment, cells and tissues frequently exist in a hypoxic state. Here, we evaluated Itchy E3 ubiquitin protein ligase (ITCH) expression in LC cells following hypoxia treatment. Methods LC cell lines were treated with hypoxic condition. Cell migration, invasion, inflammation, reactive oxygen species (ROS) production, and apoptosis of LC cells were determined by wound healing assay, Transwell invasive assay, ELISA, DCFH‐DA staining, and flow cytometry, respectively. qPCR and WB were used to determine the expression of ITCH and TXNIP. Co‐IP was performed to assess the interaction between ITCH and TXNIP. Results ITCH expression was downregulated in LC cells under hypoxic conditions. Next, LC cells were subjected to hypoxic conditions and changes in cell viability and metastasis were determined. Hypoxic conditions resulted in increased migration and invasion abilities of LC cells. Intracellular reactive oxygen species (ROS) production, inflammation, and apoptosis were also promoted by hypoxia. We found that ITCH overexpression led to the proteasomal degradation of thioredoxin‐interacting protein (TXNIP), whereas the expression of the ITCH C830A mutant did not affect TXNIP levels in LC cells. The gain‐of‐function experiment demonstrated that migration, invasion, ROS generation, inflammation, and apoptosis of hypoxia‐conditioned LC cells were ameliorated by ITCH overexpression, whereas the ITCH C830A mutant did not cause any changes in these phenotypes. Furthermore, the contribution of TXNIP knockdown and ITCH overexpression to the hypoxia‐induced features in LC cells with ITCH C830A was found to be similar. Conclusion Our results suggest a novel mechanism underlying the changes in ITCH‐mediated malignant phenotypes of hypoxia‐conditioned LC cells via TXNIP.
Collapse
Affiliation(s)
- Qian Sun
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| | - Bi-Bo Wang
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| | - Wei Wei
- Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing, China
| | - Gui-Chun Huang
- Department of Medical Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Lei-Lei Liu
- Department of Pathology, Jinling Hospital, Nanjing, China
| | - Wei-Wei Chen
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| | - Jing Wang
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| | - Xiao-Yue Zhao
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| | - Lu Lu
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| | - Rong Fang
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| | - Chun-Yan Zhu
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| | - Xiao-Yuan Chu
- Department of Medical Oncology, Jinling Hospital, Nanjing, China
| |
Collapse
|
14
|
Chen X, Jiang L, Zhou Z, Yang B, He Q, Zhu C, Cao J. The Role of Membrane-Associated E3 Ubiquitin Ligases in Cancer. Front Pharmacol 2022; 13:928794. [PMID: 35847032 PMCID: PMC9285105 DOI: 10.3389/fphar.2022.928794] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/10/2022] [Indexed: 11/13/2022] Open
Abstract
The cell membrane system comprises the plasma membrane, endoplasmic reticulum, Golgi apparatus, lysosome, mitochondria, and nuclear membrane, which are essential for maintaining normal physiological functions of cells. The proteins associated with these membrane-organelles are frequently modified to regulate their functions, the most common of which is ubiquitin modification. So far, many ubiquitin E3 ligases anchored in the membrane system have been identified as critical players facilitating intracellular biofunctions whose dysfunction is highly related to cancer. In this review, we summarized membrane-associated E3 ligases and revealed their relationship with cancer, which is of great significance for discovering novel drug targets of cancer and may open up new avenues for inducing ubiquitination-mediated degradation of cancer-associated membrane proteins via small chemicals such as PROTAC and molecular glue.
Collapse
Affiliation(s)
- Xuankun Chen
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Li Jiang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Zhesheng Zhou
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
- The Innovation Institute for Artificial Intelligence in Medicine, Zhejiang University, Hangzhou, China
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
- The Innovation Institute for Artificial Intelligence in Medicine, Zhejiang University, Hangzhou, China
- Center for Drug Safety Evaluation and Research of Zhejiang University, Zhejiang University, Hangzhou, China
- Cancer Center of Zhejiang University, Hangzhou, China
| | - Chengliang Zhu
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
- The Innovation Institute for Artificial Intelligence in Medicine, Zhejiang University, Hangzhou, China
- Center for Drug Safety Evaluation and Research of Zhejiang University, Zhejiang University, Hangzhou, China
- *Correspondence: Chengliang Zhu, ; Ji Cao,
| | - Ji Cao
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
- The Innovation Institute for Artificial Intelligence in Medicine, Zhejiang University, Hangzhou, China
- Cancer Center of Zhejiang University, Hangzhou, China
- *Correspondence: Chengliang Zhu, ; Ji Cao,
| |
Collapse
|
15
|
Distinct interactors define the p63 transcriptional signature in epithelial development or cancer. Biochem J 2022; 479:1375-1392. [PMID: 35748701 PMCID: PMC9250260 DOI: 10.1042/bcj20210737] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/01/2022] [Accepted: 06/06/2022] [Indexed: 11/24/2022]
Abstract
The TP63 is an indispensable transcription factor for development and homeostasis of epithelia and its derived glandular tissue. It is also involved in female germline cell quality control, muscle and thymus development. It is expressed as multiple isoforms transcribed by two independent promoters, in addition to alternative splicing occurring at the mRNA 3′-UTR. Expression of the TP63 gene, specifically the amino-deleted p63 isoform, ΔNp63, is required to regulate numerous biological activities, including lineage specification, self-renewal capacity of epithelial stem cells, proliferation/expansion of basal keratinocytes, differentiation of stratified epithelia. In cancer, ΔNp63 is implicated in squamous cancers pathogenesis of different origin including skin, head and neck and lung and in sustaining self-renewal of cancer stem cells. How this transcription factor can control such a diverse set of biological pathways is central to the understanding of the molecular mechanisms through which p63 acquires oncogenic activity, profoundly changing its down-stream transcriptional signature. Here, we highlight how different proteins interacting with p63 allow it to regulate the transcription of several central genes. The interacting proteins include transcription factors/regulators, epigenetic modifiers, and post-transcriptional modifiers. Moreover, as p63 depends on its interactome, we discuss the hypothesis to target the protein interactors to directly affect p63 oncogenic activities and p63-related diseases.
Collapse
|
16
|
Borbora SM, Rajmani RS, Balaji KN. PRMT5 epigenetically regulates the E3 ubiquitin ligase ITCH to influence lipid accumulation during mycobacterial infection. PLoS Pathog 2022; 18:e1010095. [PMID: 35658060 PMCID: PMC9200362 DOI: 10.1371/journal.ppat.1010095] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 06/15/2022] [Accepted: 04/27/2022] [Indexed: 11/18/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), triggers enhanced accumulation of lipids to generate foamy macrophages (FMs). This process has been often attributed to the surge in the expression of lipid influx genes with a concomitant decrease in those involved in lipid efflux. Here, we define an Mtb-orchestrated modulation of the ubiquitination of lipid accumulation markers to enhance lipid accretion during infection. We find that Mtb infection represses the expression of the E3 ubiquitin ligase, ITCH, resulting in the sustenance of key lipid accrual molecules viz. ADRP and CD36, that are otherwise targeted by ITCH for proteasomal degradation. In line, overexpressing ITCH in Mtb-infected cells was found to suppress Mtb-induced lipid accumulation. Molecular analyses including loss-of-function and ChIP assays demonstrated a role for the concerted action of the transcription factor YY1 and the arginine methyl transferase PRMT5 in restricting the expression of Itch gene by conferring repressive symmetrical H4R3me2 marks on its promoter. Consequently, siRNA-mediated depletion of YY1 or PRMT5 rescued ITCH expression, thereby compromising the levels of Mtb-induced ADRP and CD36 and limiting FM formation during infection. Accumulation of lipids within the host has been implicated as a pro-mycobacterial process that aids in pathogen persistence and dormancy. In line, we found that perturbation of PRMT5 enzyme activity resulted in compromised lipid levels and reduced mycobacterial survival in mouse peritoneal macrophages (ex vivo) and in a therapeutic mouse model of TB infection (in vivo). These findings provide new insights into the role of PRMT5 and YY1 in augmenting mycobacterial pathogenesis. Thus, we posit that our observations could help design novel adjunct therapies and combinatorial drug regimen for effective anti-TB strategies. Mycobacterium tuberculosis infection leads to the formation of lipid-laden cells (foamy macrophages-FMs) that offer a favorable shelter for its persistence. During infection, we observe a significant reduction in the expression of the E3 ubiquitin ligase, ITCH. This repression allows the sustenance of key lipid accretion molecules (ADRP and CD36), by curbing their proteasomal degradation. Further, we show the repression of ITCH to be dependent on the concerted action of the bifunctional transcription factor, YY1 and the arginine methyl transferase, PRMT5. NOTCH signaling pathway was identified as a master-regulator of YY1 expression. In vitro and in vivo analyses revealed the significance of PRMT5 in regulating FM formation and consequently mycobacterial burden.
Collapse
Affiliation(s)
- Salik Miskat Borbora
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore, Karnataka, India
| | - Raju S. Rajmani
- Center for Infectious Disease Research, Indian Institute of Science, Bangalore, Karnataka, India
| | | |
Collapse
|
17
|
Qi L, Wang M, He J, Jia B, Ren J, Zheng S. E3 ubiquitin ligase ITCH improves LPS-induced chondrocyte injury by mediating JAG1 ubiquitination in osteoarthritis. Chem Biol Interact 2022; 360:109921. [DOI: 10.1016/j.cbi.2022.109921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/21/2022] [Accepted: 03/31/2022] [Indexed: 12/25/2022]
|
18
|
Ruan T, Sun Y, Zhang J, Sun J, Liu W, Prinz RA, Peng D, Liu X, Xu X. H5N1 infection impairs the alveolar epithelial barrier through intercellular junction proteins via Itch-mediated proteasomal degradation. Commun Biol 2022; 5:186. [PMID: 35233032 PMCID: PMC8888635 DOI: 10.1038/s42003-022-03131-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 02/08/2022] [Indexed: 12/16/2022] Open
Abstract
The H5N1 subtype of the avian influenza virus causes sporadic but fatal infections in humans. H5N1 virus infection leads to the disruption of the alveolar epithelial barrier, a pathologic change that often progresses into acute respiratory distress syndrome (ARDS) and pneumonia. The mechanisms underlying this remain poorly understood. Here we report that H5N1 viruses downregulate the expression of intercellular junction proteins (E-cadherin, occludin, claudin-1, and ZO-1) in several cell lines and the lungs of H5N1 virus-infected mice. H5N1 virus infection activates TGF-β-activated kinase 1 (TAK1), which then activates p38 and ERK to induce E3 ubiquitin ligase Itch expression and to promote occludin ubiquitination and degradation. Inhibition of the TAK1-Itch pathway restores the intercellular junction structure and function in vitro and in the lungs of H5N1 virus-infected mice. Our study suggests that H5N1 virus infection impairs the alveolar epithelial barrier by downregulating the expression of intercellular junction proteins at the posttranslational level.
Collapse
Affiliation(s)
- Tao Ruan
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Yuling Sun
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Jingting Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Jing Sun
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China.,Institute of Comparative Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Wei Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Richard A Prinz
- Department of Surgery, NorthShore University Health System, Evanston, IL, 60201, USA
| | - Daxin Peng
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Xiufan Liu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu Province, 225009, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China
| | - Xiulong Xu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China. .,Institute of Comparative Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China. .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China.
| |
Collapse
|
19
|
Wang BB, Xu H, Isenmann S, Huang C, Elorza-Vidal X, Rychkov GY, Estévez R, Schittenhelm RB, Lukacs GL, Apaja PM. Ubr1-induced selective endophagy/autophagy protects against the endosomal and Ca 2+-induced proteostasis disease stress. Cell Mol Life Sci 2022; 79:167. [PMID: 35233680 PMCID: PMC8888484 DOI: 10.1007/s00018-022-04191-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/30/2022] [Accepted: 02/04/2022] [Indexed: 12/15/2022]
Abstract
The cellular defense mechanisms against cumulative endo-lysosomal stress remain incompletely understood. Here, we identify Ubr1 as a protein quality control (QC) E3 ubiquitin-ligase that counteracts proteostasis stresses by facilitating endosomal cargo-selective autophagy for lysosomal degradation. Astrocyte regulatory cluster membrane protein MLC1 mutations cause endosomal compartment stress by fusion and enlargement. Partial lysosomal clearance of mutant endosomal MLC1 is accomplished by the endosomal QC ubiquitin ligases, CHIP and Ubr1 via ESCRT-dependent route. As a consequence of the endosomal stress, a supportive QC mechanism, dependent on both Ubr1 and SQSTM1/p62 activities, targets ubiquitinated and arginylated MLC1 mutants for selective endosomal autophagy (endophagy). This QC pathway is also activated for arginylated Ubr1-SQSTM1/p62 autophagy cargoes during cytosolic Ca2+-assault. Conversely, the loss of Ubr1 and/or arginylation elicited endosomal compartment stress. These findings underscore the critical housekeeping role of Ubr1 and arginylation-dependent endophagy/autophagy during endo-lysosomal proteostasis perturbations and suggest a link of Ubr1 to Ca2+ homeostasis and proteins implicated in various diseases including cancers and brain disorders.
Collapse
Affiliation(s)
- Ben B Wang
- Lifelong Health, Organelle Proteostasis Diseases, South Australian Health and Medical Research Institute (SAHMRI), 5000 North Terrace, Adelaide, SA, 5000, Australia.,EMBL Australia, Adelaide, South Australia, 5000, Australia
| | - Haijin Xu
- Department of Physiology and Cell Information Systems, McGill University, 3655 Promenade Sir-William-Osler, Montréal, QC, H3G 1Y6, Canada
| | - Sandra Isenmann
- Lifelong Health, Organelle Proteostasis Diseases, South Australian Health and Medical Research Institute (SAHMRI), 5000 North Terrace, Adelaide, SA, 5000, Australia.,EMBL Australia, Adelaide, South Australia, 5000, Australia
| | - Cheng Huang
- Monash Biomedical Proteomics Facility, Department of Biochemistry, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
| | - Xabier Elorza-Vidal
- Unitat de Fisiologia, Departament de Ciències Fisiològiques, IDIBELL-Institute of Neurosciences, L'Hospitalet de Llobregat, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
| | - Grigori Y Rychkov
- Lifelong Health, Organelle Proteostasis Diseases, South Australian Health and Medical Research Institute (SAHMRI), 5000 North Terrace, Adelaide, SA, 5000, Australia.,School of Medicine, University of Adelaide, Adelaide, SA, 5005, Australia
| | - Raúl Estévez
- Unitat de Fisiologia, Departament de Ciències Fisiològiques, IDIBELL-Institute of Neurosciences, L'Hospitalet de Llobregat, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
| | - Ralf B Schittenhelm
- Monash Biomedical Proteomics Facility, Department of Biochemistry, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
| | - Gergely L Lukacs
- Department of Physiology and Cell Information Systems, McGill University, 3655 Promenade Sir-William-Osler, Montréal, QC, H3G 1Y6, Canada. .,Department of Biochemistry, McGill University, Montréal, QC, H3G 1Y6, Canada.
| | - Pirjo M Apaja
- Lifelong Health, Organelle Proteostasis Diseases, South Australian Health and Medical Research Institute (SAHMRI), 5000 North Terrace, Adelaide, SA, 5000, Australia. .,EMBL Australia, Adelaide, South Australia, 5000, Australia. .,Department of Molecular and Biomedical Sciences, University of Adelaide, Adelaide, SA, 5005, Australia. .,College of Public Health and Medicine, Molecular Biosciences Theme, Flinders University, Bedford Park, SA, 5042, Australia.
| |
Collapse
|
20
|
Site-specific ubiquitination of MLKL targets it to endosomes and targets Listeria and Yersinia to the lysosomes. Cell Death Differ 2022; 29:306-322. [PMID: 34999730 PMCID: PMC8816944 DOI: 10.1038/s41418-021-00924-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 12/05/2021] [Accepted: 12/06/2021] [Indexed: 12/20/2022] Open
Abstract
Phosphorylation of the pseudokinase mixed lineage kinase domain-like protein (MLKL) by the protein kinase RIPK3 targets MLKL to the cell membrane, where it triggers necroptotic cell death. We report that conjugation of K63-linked polyubiquitin chains to distinct lysine residues in the N-terminal HeLo domain of phosphorylated MLKL (facilitated by the ubiquitin ligase ITCH that binds MLKL via a WW domain) targets MLKL instead to endosomes. This results in the release of phosphorylated MLKL within extracellular vesicles. It also prompts enhanced endosomal trafficking of intracellular bacteria such as Listeria monocytogenes and Yersinia enterocolitica to the lysosomes, resulting in decreased bacterial yield. Thus, MLKL can be directed by specific covalent modifications to differing subcellular sites, whence it signals either for cell death or for non-deadly defense mechanisms.
Collapse
|
21
|
Delvecchio VS, Fierro C, Giovannini S, Melino G, Bernassola F. Emerging roles of the HECT-type E3 ubiquitin ligases in hematological malignancies. Discov Oncol 2021; 12:39. [PMID: 35201500 PMCID: PMC8777521 DOI: 10.1007/s12672-021-00435-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 09/13/2021] [Indexed: 02/07/2023] Open
Abstract
Ubiquitination-mediated proteolysis or regulation of proteins, ultimately executed by E3 ubiquitin ligases, control a wide array of cellular processes, including transcription, cell cycle, autophagy and apoptotic cell death. HECT-type E3 ubiquitin ligases can be distinguished from other subfamilies of E3 ubiquitin ligases because they have a C-terminal HECT domain that directly catalyzes the covalent attachment of ubiquitin to their substrate proteins. Deregulation of HECT-type E3-mediated ubiquitination plays a prominent role in cancer development and chemoresistance. Several members of this subfamily are indeed frequently deregulated in human cancers as a result of genetic mutations and altered expression or activity. HECT-type E3s contribute to tumorigenesis by regulating the ubiquitination rate of substrates that function as either tumour suppressors or oncogenes. While the pathological roles of the HECT family members in solid tumors are quite well established, their contribution to the pathogenesis of hematological malignancies has only recently emerged. This review aims to provide a comprehensive overview of the involvement of the HECT-type E3s in leukemogenesis.
Collapse
Affiliation(s)
- Vincenza Simona Delvecchio
- Department of Experimental Medicine, TOR, University of Rome “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy
| | - Claudia Fierro
- Department of Experimental Medicine, TOR, University of Rome “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy
| | - Sara Giovannini
- Department of Experimental Medicine, TOR, University of Rome “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy
| | - Gerry Melino
- Department of Experimental Medicine, TOR, University of Rome “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy
| | - Francesca Bernassola
- Department of Experimental Medicine, TOR, University of Rome “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy
| |
Collapse
|
22
|
The Role of HECT-Type E3 Ligase in the Development of Cardiac Disease. Int J Mol Sci 2021; 22:ijms22116065. [PMID: 34199773 PMCID: PMC8199989 DOI: 10.3390/ijms22116065] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 05/26/2021] [Accepted: 06/01/2021] [Indexed: 12/12/2022] Open
Abstract
Despite advances in medicine, cardiac disease remains an increasing health problem associated with a high mortality rate. Maladaptive cardiac remodeling, such as cardiac hypertrophy and fibrosis, is a risk factor for heart failure; therefore, it is critical to identify new therapeutic targets. Failing heart is reported to be associated with hyper-ubiquitylation and impairment of the ubiquitin–proteasome system, indicating an importance of ubiquitylation in the development of cardiac disease. Ubiquitylation is a post-translational modification that plays a pivotal role in protein function and degradation. In 1995, homologous to E6AP C-terminus (HECT) type E3 ligases were discovered. E3 ligases are key enzymes in ubiquitylation and are classified into three families: really interesting new genes (RING), HECT, and RING-between-RINGs (RBRs). Moreover, 28 HECT-type E3 ligases have been identified in human beings. It is well conserved in evolution and is characterized by the direct attachment of ubiquitin to substrates. HECT-type E3 ligase is reported to be involved in a wide range of human diseases and health. The role of HECT-type E3 ligases in the development of cardiac diseases has been uncovered in the last decade. There are only a few review articles summarizing recent advancements regarding HECT-type E3 ligase in the field of cardiac disease. This study focused on cardiac remodeling and described the role of HECT-type E3 ligases in the development of cardiac disease. Moreover, this study revealed that the current knowledge could be exploited for the development of new clinical therapies.
Collapse
|
23
|
Chen W, Patel D, Jia Y, Yu Z, Liu X, Shi H, Liu H. MARCH8 Suppresses Tumor Metastasis and Mediates Degradation of STAT3 and CD44 in Breast Cancer Cells. Cancers (Basel) 2021; 13:2550. [PMID: 34067416 PMCID: PMC8196951 DOI: 10.3390/cancers13112550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/16/2021] [Accepted: 05/17/2021] [Indexed: 12/03/2022] Open
Abstract
Protein stability is largely regulated by post-translational modifications, such as ubiquitination, which is mediated by ubiquitin-activating enzyme E1, ubiquitin-conjugating enzyme E2, and ubiquitin ligase E3 with substrate specificity. Membrane-associated RING-CH (MARCH) proteins represent one novel family of transmembrane E3 ligases which target glycoproteins for lysosomal destruction. While most of the MARCH family members are known to degrade membrane proteins in immune cells, their tumor-intrinsic role is largely unknown. In this study, we found that the expression of one MARCH family member, MARCH8, is specifically downregulated in breast cancer tissues and positively correlated with breast cancer survival rate according to bioinformatic analysis of The Cancer Genomic Atlas (TCGA) dataset. MARCH8 protein expression was also lower in a variety of human breast cancer cell lines in comparison to immortalized human mammary epithelial MCF-12A cells. Restoration of MARCH8 expression induced apoptosis in human breast cancer cell lines MDA-MB-231 and BT549. Stable expression of MARCH8 inhibited tumorigenesis and lung metastases of MDA-MB-231 cells in mice. Moreover, we discovered that the breast cancer stem-cell marker and metastasis driver CD44, a membrane protein, interacts with MARCH8 and is one of the glycoprotein targets subject to MARCH8-dependent lysosomal degradation. Unexpectedly, we identified a nonmembrane protein, signal transducer and transcription activator 3 (STAT3), as another essential ubiquitination target of MARCH8, whose degradation through the proteasome pathway is responsible for the proapoptotic changes mediated by MARCH8. These findings highlight a novel tumor-suppressing function of MARCH8 in targeting both membrane and nonmembrane protein targets required for the survival and metastasis of breast cancer cells.
Collapse
Affiliation(s)
- Wenjing Chen
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (W.C.); (D.P.); (Y.J.); (Z.Y.); (X.L.)
| | - Dhwani Patel
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (W.C.); (D.P.); (Y.J.); (Z.Y.); (X.L.)
| | - Yuzhi Jia
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (W.C.); (D.P.); (Y.J.); (Z.Y.); (X.L.)
| | - Zihao Yu
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (W.C.); (D.P.); (Y.J.); (Z.Y.); (X.L.)
| | - Xia Liu
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (W.C.); (D.P.); (Y.J.); (Z.Y.); (X.L.)
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Hengliang Shi
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (W.C.); (D.P.); (Y.J.); (Z.Y.); (X.L.)
- Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou 221006, China
- Central Laboratory, The Affiliated Hospital of Xuzhou Medical University, Xuzhou 221006, China
| | - Huiping Liu
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (W.C.); (D.P.); (Y.J.); (Z.Y.); (X.L.)
- Department of Medicine, the Division of Hematology and Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
- Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| |
Collapse
|
24
|
Coit P, Schollaert KL, Mirizio EM, Torok KS, Sawalha AH. DNA methylation patterns in juvenile systemic sclerosis and localized scleroderma. Clin Immunol 2021; 228:108756. [PMID: 33992755 DOI: 10.1016/j.clim.2021.108756] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/12/2021] [Accepted: 05/12/2021] [Indexed: 12/16/2022]
Abstract
Scleroderma refers to a group of chronic fibrotic immune-mediated diseases of unknown etiology. Characterizing epigenetic changes in childhood-onset scleroderma, systemic sclerosis or localized scleroderma, has not been previously performed. The aim of this study was to assess DNA methylation differences and similarities between juvenile systemic sclerosis (jSSc) and juvenile localized scleroderma (jLS) compared to matched healthy controls. Genome-wide DNA methylation changes in peripheral blood mononuclear cell samples were assessed using the MethylationEPIC array followed by bioinformatic analysis and limited functional assessment. We identified a total of 105 and 144 differentially methylated sites compared to healthy controls in jSSc and jLS, respectively. The majority of differentially methylated sites and genes represented were unique to either jSSc or jLS suggesting a different underlying epigenetic pattern in both diseases. Among shared differentially methylated genes, methylation levels in a CpG site in FGFR2 can distinguish between LS and healthy PBMCs with a high accuracy. Canonical pathway analysis revealed that inflammatory pathways were enriched in genes differentially methylated in jSSc, including STAT3, NF-κB, and IL-15 pathways. In contrast, the HIPPO signaling pathway was enriched in jLS. Our data also suggest a potential role for NOTCH3 in both jSSc and jLS, and revealed a number of transcription factors unique to each of the two diseases. In summary, our data revealed important insights into jSSc and jLS and suggest a potentially novel epigenetic diagnostic biomarker for LS.
Collapse
Affiliation(s)
- Patrick Coit
- Division of Rheumatology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA; Graduate Program in Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Kaila L Schollaert
- Division of Rheumatology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
| | - Emily M Mirizio
- Division of Rheumatology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kathryn S Torok
- Division of Rheumatology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA; Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, USA; University of Pittsburgh Systemic Sclerosis Center of Research Translation, University of Pittsburgh, Pittsburgh, PA, USA
| | - Amr H Sawalha
- Division of Rheumatology, Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA; Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Lupus Center of Excellence, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA.
| |
Collapse
|
25
|
Wang C, Li H, Wu L, Jiao X, Jin Z, Zhu Y, Fang Z, Zhang X, Huang H, Zhao L. Coiled-Coil Domain-Containing 68 Downregulation Promotes Colorectal Cancer Cell Growth by Inhibiting ITCH-Mediated CDK4 Degradation. Front Oncol 2021; 11:668743. [PMID: 33968776 PMCID: PMC8100586 DOI: 10.3389/fonc.2021.668743] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 03/30/2021] [Indexed: 12/31/2022] Open
Abstract
Coiled-coil domain-containing 68 (CCDC68) plays different roles in cancer and is predicted as a tumor suppressor in human colorectal cancer (CRC). However, the specific role of CCDC68 in CRC and the underlying mechanisms remain unknown. Here, we showed that CCDC68 expression was lower in CRC than that in corresponding normal tissues, and CCDC68 level was positively correlated with disease-free survival. Ectopic expression of CCDC68 decreased CRC cell proliferation in vitro and suppressed the growth of CRC xenograft tumors in vivo. CCDC68 caused G0/G1 cell cycle arrest, downregulated CDK4, and upregulated ITCH, the E3 ubiquitin ligase responsible for CDK4 protein degradation. This increased CDK4 degradation, which decreased CDK4 protein levels and inhibited CRC tumor growth. Collectively, the present results identify a novel CDK4 regulatory axis consisting of CCDC68 and ITCH, which suggest that CCDC68 is a promising target for the treatment of CRC.
Collapse
Affiliation(s)
- Cong Wang
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Hongyan Li
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Lei Wu
- Department of General Surgery, Heze Municipal Hospital, Heze, China
| | - Xueli Jiao
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zihui Jin
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Yujie Zhu
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Ziling Fang
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xiaodong Zhang
- Department of Colorectal anal surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Haishan Huang
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Lingling Zhao
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
26
|
Xu YR, Lei CQ. TAK1-TABs Complex: A Central Signalosome in Inflammatory Responses. Front Immunol 2021; 11:608976. [PMID: 33469458 PMCID: PMC7813674 DOI: 10.3389/fimmu.2020.608976] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/09/2020] [Indexed: 12/14/2022] Open
Abstract
Transforming growth factor-β (TGF-β)-activated kinase 1 (TAK1) is a member of the MAPK kinase kinase (MAPKKK) family and has been implicated in the regulation of a wide range of physiological and pathological processes. TAK1 functions through assembling with its binding partners TAK1-binding proteins (TAB1, TAB2, and TAB3) and can be activated by a variety of stimuli such as tumor necrosis factor α (TNFα), interleukin-1β (IL-1β), and toll-like receptor ligands, and they play essential roles in the activation of NF-κB and MAPKs. Numerous studies have demonstrated that post-translational modifications play important roles in properly controlling the activity, stability, and assembly of TAK1-TABs complex according to the indicated cellular environment. This review focuses on the recent advances in TAK1-TABs-mediated signaling and the regulations of TAK1-TABs complex by post-translational modifications.
Collapse
Affiliation(s)
- Yan-Ran Xu
- Hubei Key Laboratory of Cell Homeostasis, Frontier Science Center for Immunology and Metabolism, State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, China
| | - Cao-Qi Lei
- Hubei Key Laboratory of Cell Homeostasis, Frontier Science Center for Immunology and Metabolism, State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, China
| |
Collapse
|
27
|
Xiao Y, Huang Q, Wu Z, Chen W. Roles of protein ubiquitination in inflammatory bowel disease. Immunobiology 2020; 225:152026. [PMID: 33190004 DOI: 10.1016/j.imbio.2020.152026] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 08/19/2020] [Accepted: 10/18/2020] [Indexed: 02/08/2023]
Abstract
Inflammatory bowel disease (IBD) including Crohn's disease (CD) and ulcerative colitis (UC) seriously affects the quality of life for patients. The pathogenesis of IBD contains the environmental, host genetic and epigenetic factors. In recent years, the studies of protein ubiquitination, an important protein post-translational modification as an epigenetic factor, have emerged in the pathogenesis and development of IBD. In the past few years, accumulative evidence illustrated that six E3 ubiquitin ligases, namely, ring finger protein (RNF) 183, RNF 20, A20, Pellino 3, TRIM62 and Itch, exhibited clear mechanisms in the development of IBD. They regulate the intestinal inflammation by facilitating the ubiquitination of targeted proteins which participate in different inflammatory signaling pathways. Besides, it was reported that some deubiquitinating enzymes such as Cylindromatosis and USP7 were involved in the development of IBD, but the molecular mechanism was still unclear. This review summarized the role and regulatory mechanism of protein ubiquitination in the pathogenesis and development of IBD, providing insights to develop a new therapeutic strategy in IBD treatments.
Collapse
Affiliation(s)
- Yue Xiao
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Marshall Laboratory of Biomedical Engineering, Department of Immunology, School of Medicine, Shenzhen University, Shenzhen 516080, China
| | - Qi Huang
- Department of Pediatric Orthopaedics, Shenzhen Children's Hospital, Shenzhen 518035, China
| | - Zherui Wu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Marshall Laboratory of Biomedical Engineering, Department of Immunology, School of Medicine, Shenzhen University, Shenzhen 516080, China
| | - Weilin Chen
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Marshall Laboratory of Biomedical Engineering, Department of Immunology, School of Medicine, Shenzhen University, Shenzhen 516080, China.
| |
Collapse
|
28
|
Cir-ITCH inhibits gastric cancer migration, invasion and proliferation by regulating the Wnt/β-catenin pathway. Sci Rep 2020; 10:17443. [PMID: 33060778 PMCID: PMC7566509 DOI: 10.1038/s41598-020-74452-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 10/01/2020] [Indexed: 02/06/2023] Open
Abstract
Circular RNAs (circRNAs) are differentially expressed in various tumours, but the expression and regulatory mechanisms of circular RNA ITCH (cir-ITCH) in gastric cancer remain unclear. For this reason, in the present study, we assessed the expression of cir-ITCH and the associated regulatory mechanism of cir-ITCH in gastric cancer. Through RTq-PCR assays, we observed that cir-ITCH expression was attenuated in gastric cancer cell lines and tissues, with cir-ITCH expression in gastric cancer tissues with lymph node metastasis being considerably lower than that observed in gastric cancer tissues without lymph node metastasis. In addition, we demonstrated that cir-ITCH or linear ITCH may be a useful marker for gastric cancer prognosis by Kaplan–Meier survival analysis. We also showed that cir-ITCH overexpression could increase linear ITCH expression through miR-17 via RNA immunoprecipitation (RIP) and luciferase reporter assays. Moreover, in vivo and in vitro experimental results showed that cir-ITCH can act as a tumour suppressor to prevent gastric cancer tumourgenesis by sponging miR-17. The Wnt/β-catenin pathway plays a crucial role during the carcinogenesis of cancers, and we observed that cir-ITCH could negatively regulate Wnt/β-catenin signalling, which could be restored by miR-17. In summary, cir-ITCH was shown to prevent gastric cancer tumourgenesis through the Wnt/β-catenin signalling pathway by sequestering miR-17.
Collapse
|
29
|
Zhang Y, Qian H, Wu B, You S, Wu S, Lu S, Wang P, Cao L, Zhang N, Sun Y. E3 Ubiquitin ligase NEDD4 family‑regulatory network in cardiovascular disease. Int J Biol Sci 2020; 16:2727-2740. [PMID: 33110392 PMCID: PMC7586430 DOI: 10.7150/ijbs.48437] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/06/2020] [Indexed: 12/17/2022] Open
Abstract
Protein ubiquitination represents a critical modification occurring after translation. E3 ligase catalyzes the covalent binding of ubiquitin to the protein substrate, which could be degraded. Ubiquitination as an important protein post-translational modification is closely related to cardiovascular disease. The NEDD4 family, belonging to HECT class of E3 ubiquitin ligases can recognize different substrate proteins, including PTEN, ENaC, Nav1.5, SMAD2, PARP1, Septin4, ALK1, SERCA2a, TGFβR3 and so on, via the WW domain to catalyze ubiquitination, thus participating in multiple cardiovascular-related disease such as hypertension, arrhythmia, myocardial infarction, heart failure, cardiotoxicity, cardiac hypertrophy, myocardial fibrosis, cardiac remodeling, atherosclerosis, pulmonary hypertension and heart valve disease. However, there is currently no review comprehensively clarifying the important role of NEDD4 family proteins in the cardiovascular system. Therefore, the present review summarized recent studies about NEDD4 family members in cardiovascular disease, providing novel insights into the prevention and treatment of cardiovascular disease. In addition, assessing transgenic animals and performing gene silencing would further identify the ubiquitination targets of NEDD4. NEDD4 quantification in clinical samples would also constitute an important method for determining NEDD4 significance in cardiovascular disease.
Collapse
Affiliation(s)
- Ying Zhang
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| | - Hao Qian
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| | - Boquan Wu
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| | - Shilong You
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| | - Shaojun Wu
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| | - Saien Lu
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| | - Pingyuan Wang
- Staff scientist, Center for Molecular Medicine National Heart Lung and Blood Institute, National Institutes of Health, the United States
| | - Liu Cao
- Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University; Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning, China
| | - Naijin Zhang
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| | - Yingxian Sun
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, Liaoning, P.R. China
| |
Collapse
|
30
|
Aberrant activation of neuronal cell cycle caused by dysregulation of ubiquitin ligase Itch results in neurodegeneration. Cell Death Dis 2020; 11:441. [PMID: 32513985 PMCID: PMC7280246 DOI: 10.1038/s41419-020-2647-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 05/25/2020] [Accepted: 05/27/2020] [Indexed: 12/15/2022]
Abstract
It is critical for the neuronal cell cycle to remain suppressed in terminally differentiated neurons as its activation results in aberrant cell cycle re-entry that causes neuronal apoptosis (CRNA), which has been observed in several neurodegenerative disorders like Alzheimer's disease (AD). In the present study, we report that E3 ubiquitin ligase Itch is a major regulator of CRNA and elucidated the mechanism via which it is regulated in this process. Neurotoxic amyloid peptide Aβ42-treated neurons or neurons from an AD transgenic mouse model (TgAD) exhibited aberrant activation of the JNK pathway which resulted in the hyperphosphorylation of Itch. The phosphorylation of Itch primes it for autoubiquitination, which is necessary for its activation. These post-translational modifications of Itch facilitate its interaction with TAp73 resulting in its degradation. These series of events are critical for Itch-mediated CRNA and its phosphorylation and autoubiquitination site mutants reversed this process and were neuroprotective. These studies unravel a novel pathway via which neurodegeneration in AD and possibly other related disorders may be regulated by aberrant regulation of the neuronal cell cycle.
Collapse
|
31
|
Wang Y, Argiles-Castillo D, Kane EI, Zhou A, Spratt DE. HECT E3 ubiquitin ligases - emerging insights into their biological roles and disease relevance. J Cell Sci 2020; 133:133/7/jcs228072. [PMID: 32265230 DOI: 10.1242/jcs.228072] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Homologous to E6AP C-terminus (HECT) E3 ubiquitin ligases play a critical role in various cellular pathways, including but not limited to protein trafficking, subcellular localization, innate immune response, viral infections, DNA damage responses and apoptosis. To date, 28 HECT E3 ubiquitin ligases have been identified in humans, and recent studies have begun to reveal how these enzymes control various cellular pathways by catalyzing the post-translational attachment of ubiquitin to their respective substrates. New studies have identified substrates and/or interactors with different members of the HECT E3 ubiquitin ligase family, particularly for E6AP and members of the neuronal precursor cell-expressed developmentally downregulated 4 (NEDD4) family. However, there still remains many unanswered questions about the specific roles that each of the HECT E3 ubiquitin ligases have in maintaining cellular homeostasis. The present Review discusses our current understanding on the biological roles of the HECT E3 ubiquitin ligases in the cell and how they contribute to disease development. Expanded investigations on the molecular basis for how and why the HECT E3 ubiquitin ligases recognize and regulate their intracellular substrates will help to clarify the biochemical mechanisms employed by these important enzymes in ubiquitin biology.
Collapse
Affiliation(s)
- Yaya Wang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, Shanxi, China 710054.,Gustaf H. Carlson School of Chemistry and Biochemistry, Clark University, 950 Main St., Worcester, MA 01610, USA
| | - Diana Argiles-Castillo
- Gustaf H. Carlson School of Chemistry and Biochemistry, Clark University, 950 Main St., Worcester, MA 01610, USA
| | - Emma I Kane
- Gustaf H. Carlson School of Chemistry and Biochemistry, Clark University, 950 Main St., Worcester, MA 01610, USA
| | - Anning Zhou
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, Shanxi, China 710054
| | - Donald E Spratt
- Gustaf H. Carlson School of Chemistry and Biochemistry, Clark University, 950 Main St., Worcester, MA 01610, USA
| |
Collapse
|
32
|
Bernassola F, Chillemi G, Melino G. HECT-Type E3 Ubiquitin Ligases in Cancer. Trends Biochem Sci 2019; 44:1057-1075. [DOI: 10.1016/j.tibs.2019.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 08/13/2019] [Accepted: 08/23/2019] [Indexed: 12/30/2022]
|
33
|
Lear TB, McKelvey AC, Evankovich JW, Rajbhandari S, Coon TA, Dunn SR, Londino JD, McVerry BJ, Zhang Y, Valenzi E, Burton CL, Gordon R, Gingras S, Lockwood KC, Jurczak MJ, Lafyatis R, Shlomchik MJ, Liu Y, Chen BB. KIAA0317 regulates pulmonary inflammation through SOCS2 degradation. JCI Insight 2019; 4:129110. [PMID: 31578312 DOI: 10.1172/jci.insight.129110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 09/04/2019] [Indexed: 01/08/2023] Open
Abstract
Dysregulated proinflammatory cytokine release has been implicated in the pathogenesis of several life-threatening acute lung illnesses such as pneumonia, sepsis, and acute respiratory distress syndrome. Suppressors of cytokine signaling proteins, particularly SOCS2, have recently been described as antiinflammatory mediators. However, the regulation of SOCS2 protein has not been described. Here we describe a mechanism of SOCS2 regulation by the action of the ubiquitin E3 ligase KIAA0317. KIAA0317-mediated degradation of SOCS2 exacerbated inflammation in vitro, and depletion of KIAA0317 in vivo ameliorated pulmonary inflammation. KIAA0317-knockout mice exhibited resistance to LPS-induced pulmonary inflammation, while KIAA03017 reexpression mitigated this effect. We uncovered a small molecule inhibitor of KIAA0317 protein (BC-1365) that prevented SOCS2 degradation and attenuated LPS- and P. aeruginosa-induced lung inflammation in vivo. These studies show KIAA0317 to be a critical mediator of pulmonary inflammation through its degradation of SOCS2 and a potential candidate target for therapeutic inhibition.
Collapse
Affiliation(s)
- Travis B Lear
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine.,Department of Environmental and Occupational Health, School of Public Health
| | - Alison C McKelvey
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine
| | - John W Evankovich
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine
| | - Shristi Rajbhandari
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine
| | - Tiffany A Coon
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine
| | - Sarah R Dunn
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine
| | - James D Londino
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine
| | - Bryan J McVerry
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine.,Department of Environmental and Occupational Health, School of Public Health
| | - Yingze Zhang
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine
| | - Eleanor Valenzi
- Division of Rheumatology and Clinical Immunology, Department of Medicine, School of Medicine
| | - Christine L Burton
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine
| | | | | | | | - Michael J Jurczak
- Division of Endocrinology and Metabolism, Department of Medicine, School of Medicine
| | - Robert Lafyatis
- Division of Rheumatology and Clinical Immunology, Department of Medicine, School of Medicine
| | | | - Yuan Liu
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine.,Aging Institute and.,McGowan Institute for Regenerative Medicine
| | - Bill B Chen
- Acute Lung Injury Center of Excellence, Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, School of Medicine.,Aging Institute and.,Vascular Medicine Institute, Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| |
Collapse
|
34
|
Melino G, Cecconi F, Pelicci PG, Mak TW, Bernassola F. Emerging roles of HECT-type E3 ubiquitin ligases in autophagy regulation. Mol Oncol 2019; 13:2033-2048. [PMID: 31441992 PMCID: PMC6763782 DOI: 10.1002/1878-0261.12567] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/19/2019] [Accepted: 08/22/2019] [Indexed: 12/20/2022] Open
Abstract
Autophagy is a conserved self-eating process that delivers cytoplasmic material to the lysosome to allow degradation of intracellular components, including soluble, unfolded and aggregated proteins, damaged organelles, and invading microorganisms. Autophagy provides a homeostatic control mechanism and is essential for balancing sources of energy in response to nutrient stress. Autophagic dysfunction or dysregulation has been implicated in several human pathologies, including cancer and neurodegeneration, and its modulation has substantial potential as a therapeutic strategy. Given the relevant clinical and therapeutic implications of autophagy, there is emerging intense interest in the identification of the key factors regulating the components of the autophagic machinery. Various post-translational modifications, including ubiquitylation, have been implicated in autophagy control. The list of the E3 ubiquitin protein ligases involved in the regulation of several steps of the autophagic process is continuously growing. In this review, we will focus on recent advances in the understanding of the role of the homologous to the E6AP carboxyl terminus-type E3 ubiquitin ligases in autophagy control.
Collapse
Affiliation(s)
- Gerry Melino
- Department of Experimental MedicineTORUniversity of Rome “Tor Vergata”Italy
- Medical Research Council, Toxicology UnitUniversity of CambridgeUK
| | - Francesco Cecconi
- Cell Stress and Survival UnitDanish Cancer Society Research CenterCopenhagenDenmark
- Department of BiologyTor Vergata University of RomeItaly
- Department of Pediatric Hematology and OncologyIRCCS Bambino Gesù Children's HospitalRomeItaly
| | - Pier Giuseppe Pelicci
- Department of Experimental OncologyIEO, European Institute of Oncology IRCCSMilanItaly
- Department of Oncology and Haemato‐OncologyMilan UniversityItaly
| | - Tak Wah Mak
- The Campbell Family Institute for Breast Cancer ResearchOntario Cancer InstitutePrincess Margaret HospitalTorontoONCanada
| | - Francesca Bernassola
- Department of Experimental MedicineTORUniversity of Rome “Tor Vergata”Italy
- Department of Experimental OncologyIEO, European Institute of Oncology IRCCSMilanItaly
| |
Collapse
|
35
|
Zou J. Autoinflammatory characteristics and short-term effects of delivering high-dose steroids to the surface of the intact endolymphatic sac and incus in refractory Ménière's disease. J Otol 2019; 14:40-50. [PMID: 31223300 PMCID: PMC6570643 DOI: 10.1016/j.joto.2019.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/28/2018] [Accepted: 01/03/2019] [Indexed: 12/20/2022] Open
Abstract
Objective To investigate immune-related genetic background in intractable Meniere’s disease (MD) and the immediate results of a novel therapy by delivering steroids to the surface of the intact endolymphatic sac (ES) and incus in a sustainable manner. Case report and methods Candidate genes involved in immune regulation were sequenced using a next-generation sequencing method in a patient with intractable MD. Mutations were confirmed using the Sanger sequencing method. The ES was exposed, and gelatin sponge particles were immersed in high-dose methylprednisolone solution and placed onto the surface of ES. “L”-shaped gelatin sponge strips were immersed in dexamethasone solution and served as a guiding device for the steroids by touching the incus and gelatin sponge particles on the surface of the ES. Gelatin sponge particles immersed in dexamethasone solution were placed around the gelatin sponge strips and sealed using fibrin glue. Results Autoinflammation in the refractory MD case was indicated by genotype, including novel heterozygous mutations of PRF1, UNC13D, SLC29A3, ITCH, and JAK3, as well as phenotype. The vertigo was fully relieved immediately after operation. Tinnitus and aural fullness were resolved 3 weeks after operation, whereas hearing improved in 2 mon postoperation. No recurrence was noted during the 5-monfollow-up, and the final MRI supported the novel therapeutic hypothesis. Conclusion Autoinflammation was involved in a refractory MD. This novel therapy, which involves the delivery of steroids to the surface of the intact ES and incus, is effective in relieving vertigo and tinnitus and improves hearing function of refractory MD.
Collapse
Affiliation(s)
- Jing Zou
- Department of Otolaryngology-Head and Neck Surgery, Center for Otolaryngology-Head & Neck Surgery of Chinese PLA, Changhai Hospital, Second Military Medical University, Shanghai, China
| |
Collapse
|
36
|
Yin Q, Han T, Fang B, Zhang G, Zhang C, Roberts ER, Izumi V, Zheng M, Jiang S, Yin X, Kim M, Cai J, Haura EB, Koomen JM, Smalley KSM, Wan L. K27-linked ubiquitination of BRAF by ITCH engages cytokine response to maintain MEK-ERK signaling. Nat Commun 2019; 10:1870. [PMID: 31015455 PMCID: PMC6478693 DOI: 10.1038/s41467-019-09844-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 03/29/2019] [Indexed: 12/13/2022] Open
Abstract
BRAF plays an indispensable role in activating the MEK/ERK pathway to drive tumorigenesis. Receptor tyrosine kinase and RAS-mediated BRAF activation have been extensively characterized, however, it remains undefined how BRAF function is fine-tuned by stimuli other than growth factors. Here, we report that in response to proinflammatory cytokines, BRAF is subjected to lysine 27-linked poly-ubiquitination in melanoma cells by the ITCH ubiquitin E3 ligase. Lysine 27-linked ubiquitination of BRAF recruits PP2A to antagonize the S365 phosphorylation and disrupts the inhibitory interaction with 14-3-3, leading to sustained BRAF activation and subsequent elevation of the MEK/ERK signaling. Physiologically, proinflammatory cytokines activate ITCH to maintain BRAF activity and to promote proliferation and invasion of melanoma cells, whereas the ubiquitination-deficient BRAF mutant displays compromised kinase activity and reduced tumorigenicity. Collectively, our study reveals a pivotal role for ITCH-mediated BRAF ubiquitination in coordinating the signals between cytokines and the MAPK pathway activation in melanoma cells.
Collapse
Affiliation(s)
- Qing Yin
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Tao Han
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Bin Fang
- Proteomics and Metabolomics Core, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Guolin Zhang
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Chao Zhang
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Evan R Roberts
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Victoria Izumi
- Proteomics and Metabolomics Core, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Mengmeng Zheng
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - Shulong Jiang
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA.,Department of Oncology, Jining First People's Hospital, Jining, Shandong, 272111, P.R. China
| | - Xiu Yin
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA.,Department of Oncology, Jining First People's Hospital, Jining, Shandong, 272111, P.R. China
| | - Minjung Kim
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA.,Department of Cell Biology, Microbiology, and Molecular Biology, University of South Florida, Tampa, FL, 33620, USA
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
| | - Eric B Haura
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - John M Koomen
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA.,Proteomics and Metabolomics Core, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Keiran S M Smalley
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA.,Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Lixin Wan
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA. .,Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA.
| |
Collapse
|
37
|
Beasley SA, Bardhi R, Spratt DE. 1H, 13C, and 15N resonance assignments of the C-terminal lobe of the human HECT E3 ubiquitin ligase ITCH. BIOMOLECULAR NMR ASSIGNMENTS 2019; 13:15-20. [PMID: 30229450 PMCID: PMC6439258 DOI: 10.1007/s12104-018-9843-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/14/2018] [Indexed: 06/08/2023]
Abstract
ITCH (aka Atrophin-1-interacting protein 4) is a prominent member of the NEDD4 HECT (Homologous to E6AP C-Terminus) E3 ubiquitin ligase family that regulates numerous cellular functions including inflammatory responses through T-cell activation, cell differentiation, and apoptosis. Known intracellular targets of ITCH-dependent ubiquitylation include receptor proteins, signaling molecules, and transcription factors. The HECT C-terminal lobe of ITCH contains the conserved catalytic cysteine required for the covalent attachment of ubiquitin onto a substrate and polyubiquitin chain assembly. We report here the complete experimentally determined 1H, 13C, and 15N backbone and sidechain resonance assignments for the HECT C-terminal lobe of ITCH (residues 784-903) using heteronuclear, multidimensional NMR spectroscopy. These resonance assignments will be used in future NMR-based studies to examine the role of dynamics and conformational flexibility in HECT-dependent ubiquitylation as well as deciphering the structural and biochemical basis for polyubiquitin chain synthesis and specificity by ITCH.
Collapse
Affiliation(s)
- Steven A Beasley
- Gustaf H. Carlson School of Chemistry and Biochemistry, Clark University, 950 Main St., Worcester, MA, 01610, USA
| | - Roela Bardhi
- Gustaf H. Carlson School of Chemistry and Biochemistry, Clark University, 950 Main St., Worcester, MA, 01610, USA
| | - Donald E Spratt
- Gustaf H. Carlson School of Chemistry and Biochemistry, Clark University, 950 Main St., Worcester, MA, 01610, USA.
| |
Collapse
|
38
|
Neidhardt S, Garbade J, Emrich F, Klaeske K, Borger MA, Lehmann S, Jawad K, Dieterlen MT. Ischemic Cardiomyopathy Affects the Thioredoxin System in the Human Myocardium. J Card Fail 2019; 25:204-212. [PMID: 30721734 DOI: 10.1016/j.cardfail.2019.01.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 12/03/2018] [Accepted: 01/23/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Oxidative stress due to reactive oxygen species (ROS) production is a key factor in the development of heart failure (HF). This study investigated the thioredoxin (Trx) system, which plays a major role in antioxidant defense, in patients suffering from ischemic (ICM) or dilated (DCM) cardiomyopathy. METHODS AND RESULTS Myocardial tissue from ICM (n = 13) and DCM (n = 13) patients, as well as septal tissue of patients with aortic stenosis but without diagnosed hypertrophic cardiomyopathy or subaortic stenosis (control; n = 12), was analyzed for Trx1, Trx-interacting protein (TXNIP) and E3 ligase ITCH (E3 ubiquitin-protein ligase Itchy homolog) expression. Trx-reductase 1 (TXNRD1) amount and activity, cytosolic cytochrome C content, and apoptosis markers were quantified by means of enzyme-linked immunosorbent assay and multiplexing. Compared with control samples, ITCH and Trx1 expression, TXNRD1 amount and activity were reduced and TXNIP expression was increased in ICM (ITCH: P = .013; Trx1: P = .028; TXNRD1 amount: P = .035; TXNRD1 activity: P = .005; TXNIP: P = .014) but not in DCM samples. A higher level of the downstream apoptosis marker caspase-9 (ICM: 582 ± 262 MFI [P = .995]; DCM: 1251 ± 548 MFI [P = .002], control: 561 ± 214 MFI) was detected in DCM tissue. A higher expression of Bcl-2 was found in DCM (P = .011). CONCLUSION The Trx system was impaired in ICM but not in DCM. ITCH appeared to be responsible for the down-regulation of the Trx system. ROS-induced mitochondrial instability appeared to play a role in DCM.
Collapse
Affiliation(s)
- Stephan Neidhardt
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Helios Clinic, Leipzig, Germany
| | - Jens Garbade
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Helios Clinic, Leipzig, Germany
| | - Fabian Emrich
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Helios Clinic, Leipzig, Germany
| | - Kristin Klaeske
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Helios Clinic, Leipzig, Germany
| | - Michael A Borger
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Helios Clinic, Leipzig, Germany
| | - Sven Lehmann
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Helios Clinic, Leipzig, Germany
| | - Khalil Jawad
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Helios Clinic, Leipzig, Germany
| | - Maja-Theresa Dieterlen
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Helios Clinic, Leipzig, Germany.
| |
Collapse
|
39
|
Lei B, Tian Z, Fan W, Ni B. Circular RNA: a novel biomarker and therapeutic target for human cancers. Int J Med Sci 2019; 16:292-301. [PMID: 30745810 PMCID: PMC6367529 DOI: 10.7150/ijms.28047] [Citation(s) in RCA: 250] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 12/04/2018] [Indexed: 12/11/2022] Open
Abstract
Circular (circ)RNAs, a newly recognized class of noncoding RNA, have been implicated in the occurrence and development of several diseases, including neurological and cardiovascular diseases. Studies of human tumors, including those of liver cancer, gastric cancer, lung cancer and colorectal cancer, have shown differential expression profiles of circRNAs, suggesting regulatory roles in cancer pathogenesis and metastasis. In this review, we discuss the most recent research into tumor-related circRNAs, providing a comprehensive summary of the expression or/and function of these circRNAs and proposing rational perspectives on the potential clinical application of circRNAs as helpful biomarkers or therapeutic targets in human tumors.
Collapse
Affiliation(s)
- Bo Lei
- Department of Pathophysiology, Third Military Medical University, Chongqing 400038, China.,Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan 030001, China
| | - Zhiqiang Tian
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Weiping Fan
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan 030001, China
| | - Bing Ni
- Department of Pathophysiology, Third Military Medical University, Chongqing 400038, China
| |
Collapse
|
40
|
UCHL1/PGP 9.5 Dynamic in Neuro-Immune-Cutaneous Milieu: Focusing on Axonal Nerve Terminals and Epidermal Keratinocytes in Psoriatic Itch. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7489316. [PMID: 30148172 PMCID: PMC6083486 DOI: 10.1155/2018/7489316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/28/2018] [Accepted: 06/07/2018] [Indexed: 01/03/2023]
Abstract
Psoriasis is an immunogenetic skin disease manifesting as plaque lesions on the skin. Patients with psoriasis frequently suffer from itch, an unpleasant sensation causing a desire to scratch. Psoriatic itch is mainly transmitted by unmyelinated C-fibers; however, the exact molecular mechanism of psoriatic itch is still unexplained. Protein gene product 9.5 (PGP 9.5) is a panneurological marker commonly used for analysis of peripheral peptidergic and nonpeptidergic nerves and identification of cutaneous neuro-immune-endocrine cells. However, some studies suggested that nonneuronal cells, like keratinocytes, may also express PGP 9.5. This phenomenon might be linked with impaired axonal transport, keratinocyte injury, or dysfunctions of neuro-immune-cutaneous connections. The aim of this study was to analyze the expression of PGP 9.5 in psoriatic skin. We observed significantly altered density of PGP 9.5-positive axonal nerve terminals in pruritic lesional (p=0.04) and nonlesional psoriatic skin (p>0.001) compared with controls. In contrast, no significant differences were observed between psoriatic skin without itch and controls. Furthermore, PGP 9.5 expression by suprabasal keratinocytes (SBKs) was significantly increased in itchy skin lesions (p=0.007) compared to skin without itch, and a positive correlation was observed between PGP 9.5 expression and itch intensity (r=0.64; p=0.02). Our findings indicate changes in peripheral innervations and psoriatic keratinocytes, which may influence neuro-immune-cutaneous homeostasis and modulate itch transmission.
Collapse
|
41
|
Kohli S, Bhardwaj A, Kumari R, Das S. SIRT6 Is a Target of Regulation by UBE3A That Contributes to Liver Tumorigenesis in an ANXA2-Dependent Manner. Cancer Res 2017; 78:645-658. [PMID: 29217762 DOI: 10.1158/0008-5472.can-17-1692] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 09/29/2017] [Accepted: 11/29/2017] [Indexed: 01/23/2023]
Abstract
UBE3A is an E3 ubiquitin ligase well known for its role in the proteasomal degradation of p53 in human papillomavirus (HPV)-associated cancers. Here we report that UBE3A ubiquitylates and triggers degradation of the tumor-suppressive sirtuin SIRT6 in hepatocellular carcinoma. UBE3A ubiquitylated the highly conserved Lys160 residue on SIRT6. FOXO1-mediated transcriptional repression of UBE3A was sufficient to stabilize SIRT6 and to epigenetically repress ANXA2, a key mediator of UBE3A oncogenic function. Thus, UBE3A-mediated SIRT6 degradation promoted the proliferative capacity, migration potential, and invasiveness of cells. In mouse models of hepatocellular carcinoma, SIRT6 downregulation and consequent induction of ANXA2 were critical for UBE3A-mediated tumorigenesis. Furthermore, in clinical specimens, increased UBE3A levels correlated with reduced SIRT6 levels and elevated ANXA2 levels in increasing tumor grades. Overall, our findings show how the tumor suppressor SIRT6 is regulated in hepatocellular carcinoma and establish the mechanism underlying UBE3A-mediated tumorigenesis in this disease.Significance: These findings provide mechanistic insights into regulation of the tumor suppressive sirtuin SIRT6 and its implications for the development of hepatocellular carcinoma. Cancer Res; 78(3); 645-58. ©2017 AACR.
Collapse
Affiliation(s)
- Saishruti Kohli
- Molecular Oncology Laboratory, National Institute of Immunology, New Delhi, India
| | - Abhishek Bhardwaj
- Molecular Oncology Laboratory, National Institute of Immunology, New Delhi, India
| | - Richa Kumari
- Molecular Oncology Laboratory, National Institute of Immunology, New Delhi, India
| | - Sanjeev Das
- Molecular Oncology Laboratory, National Institute of Immunology, New Delhi, India.
| |
Collapse
|
42
|
Perez JM, Chen Y, Xiao TS, Abbott DW. Phosphorylation of the E3 ubiquitin protein ligase ITCH diminishes binding to its cognate E2 ubiquitin ligase. J Biol Chem 2017; 293:1100-1105. [PMID: 29212706 DOI: 10.1074/jbc.ra117.000408] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 11/21/2017] [Indexed: 12/21/2022] Open
Abstract
Heightened and extended inflammation underlies the pathogenesis of many disorders, including inflammatory bowel disease, sepsis, and inflammatory arthritis. Ubiquitin networks help dictate the strength and duration of inflammatory signaling. In innate immunity, the itchy E3 ubiquitin protein ligase (ITCH)-A20 ubiquitin-editing complex inhibits receptor-interacting Ser/Thr kinase (RIPK) activation by removing Lys-63-linked polyubiquitinated chains from key proteins in the nuclear factor kappa B (NF-κB) signaling pathway. The complex then attaches polyubiquitinated chains to these proteins to target them for lysosomal or proteasomal destruction. ITCH is phosphorylated and thereby inhibited by inhibitor of nuclear factor kappa B kinase subunit beta (IKKβ) to fine-tune the inflammatory response to the strength of the offending signal. However, the biochemical mechanism by which E3 ubiquitination is impaired by IKK-driven phosphorylation remains unclear. Here, we report that this phosphorylation impedes ITCH binding to its cognate E2 ubiquitin ligase, UbcH7. Using CRISPR-Cas9 genetic knockout to mimic the ITCH-UbcH7-inhibited state, we further show that genetic UbcH7 deficiency phenocopies ITCH phosphorylation in regulating RIPK2 ubiquitination. We conclude that phosphorylation can disrupt the binding of an E3 ubiquitin ligase to an E2-conjugating enzyme, leading to prolonged inflammatory signaling. To our knowledge, this is the first report of E3 ubiquitin ligase phosphorylation inhibiting E3 ligase activity by impairing E2-E3 complex formation.
Collapse
Affiliation(s)
| | - Yinghua Chen
- Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106
| | | | | |
Collapse
|
43
|
Zhang Y, Liang W, Zhang P, Chen J, Qian H, Zhang X, Xu W. Circular RNAs: emerging cancer biomarkers and targets. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:152. [PMID: 29096676 PMCID: PMC5667461 DOI: 10.1186/s13046-017-0624-z] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 10/19/2017] [Indexed: 12/14/2022]
Abstract
CircRNAs are a class of RNA molecules that structurally form closed loops. CircRNAs are abundant in eukaryotic transcripts and show certain levels of tissue and cell specificity. CircRNAs have been suggested to regulate gene expression at transcriptional, post-transcriptional, and translational levels. An increasing number of studies have shown that circRNAs play important roles in the development and progression of diseases including cancer. In particular, circRNAs have shown great potential in cancer diagnosis, prognosis, and therapy. In this review, we provide an overview of the biogenesis and characteristics of circRNAs, succinctly describe their functions, and comprehensively discuss about the recent advances in the roles of circRNAs in cancer with an emphasis on their clinical values.
Collapse
Affiliation(s)
- Yu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Wei Liang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Peng Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Jingyan Chen
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China
| | - Xu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China. .,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212002, China.
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu, 212013, China.
| |
Collapse
|
44
|
Liu YM, HuangFu WC, Huang HL, Wu WC, Chen YL, Yen Y, Huang HL, Nien CY, Lai MJ, Pan SL, Liou JP. 1,4-Naphthoquinones as inhibitors of Itch, a HECT domain-E3 ligase, and tumor growth suppressors in multiple myeloma. Eur J Med Chem 2017; 140:84-91. [PMID: 28923389 DOI: 10.1016/j.ejmech.2017.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/04/2017] [Accepted: 09/05/2017] [Indexed: 12/22/2022]
Abstract
A series of 1,4-naphthoquinones (10a-10q) were synthesized and evaluated for anticancer activity. Compound 10e was identified as an inhibitor of Itch, a HECT domain-E3 ligase. In an evaluation of in vivo efficacy, 10e exhibited remarkable anticancer activity with TGI values of 98.3% and 100% at 25 mg/kg and 50 mg/kg orally daily, respectively, against human RPMI-8226 multiple myeloma xenograft. Treatment with 10e also showed a decrease of Itch level in human RPMI-8226 multiple myeloma cells. Thus 10e is a lead compound for further development of inhibitors targeting E3 ligase for treatment of multiple myeloma.
Collapse
Affiliation(s)
- Yi-Min Liu
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Wei-Chun HuangFu
- The Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Han-Li Huang
- The Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Wei-Cheng Wu
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Yi-Lin Chen
- The Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Yun Yen
- The Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Hsiang-Ling Huang
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Chih-Ying Nien
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Mei-Jung Lai
- Center for Translational Medicine, Taipei Medical University, Taiwan
| | - Shiow-Lin Pan
- The Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan; Department of Pharmacology, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Jing-Ping Liou
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan; School of Pharmacy, National Defense Medical Center, Taipei, Taiwan.
| |
Collapse
|
45
|
Zhu K, Shan Z, Chen X, Cai Y, Cui L, Yao W, Wang Z, Shi P, Tian C, Lou J, Xie Y, Wen W. Allosteric auto-inhibition and activation of the Nedd4 family E3 ligase Itch. EMBO Rep 2017; 18:1618-1630. [PMID: 28747490 DOI: 10.15252/embr.201744454] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/07/2017] [Accepted: 07/07/2017] [Indexed: 11/09/2022] Open
Abstract
The Nedd4 family E3 ligases are key regulators of cell growth and proliferation and are often misregulated in human cancers and other diseases. The ligase activities of Nedd4 E3s are tightly controlled via auto-inhibition. However, the molecular mechanism underlying Nedd4 E3 auto-inhibition and activation is poorly understood. Here, we show that the WW domains proceeding the catalytic HECT domain play an inhibitory role by binding directly to HECT in the Nedd4 E3 family member Itch. Our structural and biochemical analyses of Itch reveal that the WW2 domain and a following linker allosterically lock HECT in an inactive state inhibiting E2-E3 transthiolation. Binding of the Ndfip1 adaptor or JNK1-mediated phosphorylation relieves the auto-inhibition of Itch in a WW2-dependent manner. Aberrant activation of Itch leads to migration defects of cortical neurons during development. Our study provides a new mechanism governing the regulation of Itch.
Collapse
Affiliation(s)
- Kang Zhu
- Department of Neurosurgery, Huashan Hospital, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Zelin Shan
- Department of Neurosurgery, Huashan Hospital, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Xing Chen
- Department of Neurosurgery, Huashan Hospital, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yuqun Cai
- Institutes of Brain Science, State Key Laboratory of Medical Neurobiology and Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Lei Cui
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Weiyi Yao
- Department of Neurosurgery, Huashan Hospital, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Zhen Wang
- Department of Neurosurgery, Huashan Hospital, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Pan Shi
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Changlin Tian
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Jizhong Lou
- Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yunli Xie
- Institutes of Brain Science, State Key Laboratory of Medical Neurobiology and Collaborative Innovation Center for Brain Science, Fudan University, Shanghai, China
| | - Wenyu Wen
- Department of Neurosurgery, Huashan Hospital, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| |
Collapse
|
46
|
Limiting the level of tertiary amines on polyamines leads to biocompatible nucleic acid vectors. Int J Pharm 2017; 526:106-124. [DOI: 10.1016/j.ijpharm.2017.04.059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 04/01/2017] [Accepted: 04/23/2017] [Indexed: 01/18/2023]
|
47
|
Liu J, Liu T, Wang X, He A. Circles reshaping the RNA world: from waste to treasure. Mol Cancer 2017; 16:58. [PMID: 28279183 PMCID: PMC5345220 DOI: 10.1186/s12943-017-0630-y] [Citation(s) in RCA: 301] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 03/02/2017] [Indexed: 02/08/2023] Open
Abstract
A new type of RNAs was identified from genes traditionally thought to express messenger or linear ncRNA (noncoding RNA) only. They were subsequently named as circRNAs (circular RNAs) due to the covalently closed structure. Accumulating studies were performed to explore the expression profile of circRNAs in different cell types and diseases, the outcomes totally changed our view of ncRNAs, which was thought to be junk by-products in the process of gene transcription, and enriched our poor understanding of its underlying functions. The expression profile of circRNAs is tissue-specific and alters across various stages of cell differentiation. The biological function of circRNAs is multi-faceted, involving five main features (sponge effect, post-transcriptional regulation, rolling circle translation, circRNA-derived pseudogenes and splicing interference) and varying differently from the locations, binding sites and acting modes of circRNAs. The regulating role of circRNAs is not isolated but through an enormous complicated network involving mRNAs, miRNAs and proteins. Although most of the potential functions still remain unclear, circRNAs have been proved to be ubiquitous and critical in regulating cellular processes and diseases, especially in cancers, from the laboratory to the clinic. Herein, we review circRNAs’ classification, biogenesis and metabolism, their well-studied and anticipated functions, the current understanding of the potential implications of circRNAs in tumorigenesis and cancer targeted therapy.
Collapse
Affiliation(s)
- Jing Liu
- Department of Clinical Hematology, Second Affiliated Hospital, Xi'an Jiaotong University Health Care Center, 157 West 5 Street, Xi'an, 710004, Shaanxi, People's Republic of China
| | - Tian Liu
- Department of Clinical Hematology, Second Affiliated Hospital, Xi'an Jiaotong University Health Care Center, 157 West 5 Street, Xi'an, 710004, Shaanxi, People's Republic of China
| | - Xiaman Wang
- Department of Clinical Hematology, Second Affiliated Hospital, Xi'an Jiaotong University Health Care Center, 157 West 5 Street, Xi'an, 710004, Shaanxi, People's Republic of China
| | - Aili He
- Department of Clinical Hematology, Second Affiliated Hospital, Xi'an Jiaotong University Health Care Center, 157 West 5 Street, Xi'an, 710004, Shaanxi, People's Republic of China.
| |
Collapse
|
48
|
Liu J, Li X, Zhang H, Gu R, Wang Z, Gao Z, Xing L. Ubiquitin E3 ligase Itch negatively regulates osteoblast function by promoting proteasome degradation of osteogenic proteins. Bone Joint Res 2017; 6:154-161. [PMID: 28298321 PMCID: PMC5376659 DOI: 10.1302/2046-3758.63.bjr-2016-0237.r1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 01/17/2017] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES Ubiquitin E3 ligase-mediated protein degradation regulates osteoblast function. Itch, an E3 ligase, affects numerous cell functions by regulating ubiquitination and proteasomal degradation of related proteins. However, the Itch-related cellular and molecular mechanisms by which osteoblast differentiation and function are elevated during bone fracture repair are as yet unknown. METHODS We examined the expression levels of E3 ligases and NF-κB members in callus samples during bone fracture repair by quantitative polymerase chain reaction (qPCR) and the total amount of ubiquitinated proteins by Western blot analysis in wild-type (WT) mice. The expression levels of osteoblast-associated genes in fracture callus from Itch knockout (KO) mice and their WT littermates were examined by qPCR. The effect of NF-κB on Itch expression in C2C12 osteoblast cells was determined by a chromatin immunoprecipitation (ChIP) assay. RESULTS The expression levels of WW Domain Containing E3 Ubiquitin Protein Ligase 1 (Wwp1), SMAD Specific E3 Ubiquitin Protein Ligase 1 (Smurf1), SMAD Specific E3 Ubiquitin Protein Ligase 2 (Smurf2) and Itch were all significantly increased in the fracture callus of WT mice, which was associated with elevated expression of NF-κB members and total ubiquitinated proteins. Callus tissue isolated from Itch KO mice expressed higher levels of osteoblast-associated genes, including Runx2, a positive regulator of osteoblast differentiation, but osteoclast-associated genes were not increased. Both NF-κB RelA and RelB proteins were found to bind to the NF-κB binding site in the mouse Itch promoter. CONCLUSIONS Our findings indicate that Itch depletion may have a strong positive effect on osteoblast differentiation in fracture callus. Thus, ubiquitin E3 ligase Itch could be a potential target for enhancing bone fracture healing.Cite this article: J. Liu, X. Li, H. Zhang, R. Gu, Z. Wang, Z. Gao, L. Xing. Ubiquitin E3 ligase Itch negatively regulates osteoblast function by promoting proteasome degradation of osteogenic proteins. Bone Joint Res 2017;6:154-161. DOI: 10.1302/2046-3758.63.BJR-2016-0237.R1.
Collapse
Affiliation(s)
- J Liu
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, 126 Xiantai Boulevard, Changchun, Jilin 130033, China
| | - X Li
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Centre, 601 Elmwood Ave, Rochester, NY 14642, USA
| | - H Zhang
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Centre, 601 Elmwood Ave, Rochester, NY 14642, USA
| | - R Gu
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, 126 Xiantai Boulevard, Changchun, Jilin 130033, China
| | - Z Wang
- Fourth Hospital of Hebei Medical University, 12 Jiankang Road, Shijiazhuang 050011, China
| | - Z Gao
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, 126 Xiantai Boulevard, Changchun, Jilin 130033, China
| | - L Xing
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Centre, 601 Elmwood Ave, Rochester, NY 14642, USA
| |
Collapse
|
49
|
Thiel N, Keyser KA, Lemmermann NAW, Oduro JD, Wagner K, Elsner C, Halenius A, Lenac Roviš T, Brinkmann MM, Jonjić S, Cicin-Sain L, Messerle M. The Mouse Cytomegalovirus Gene m42 Targets Surface Expression of the Protein Tyrosine Phosphatase CD45 in Infected Macrophages. PLoS Pathog 2016; 12:e1006057. [PMID: 27926943 PMCID: PMC5142792 DOI: 10.1371/journal.ppat.1006057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 11/11/2016] [Indexed: 01/28/2023] Open
Abstract
The receptor-like protein tyrosine phosphatase CD45 is expressed on the surface of cells of hematopoietic origin and has a pivotal role for the function of these cells in the immune response. Here we report that following infection of macrophages with mouse cytomegalovirus (MCMV) the cell surface expression of CD45 is drastically diminished. Screening of a set of MCMV deletion mutants allowed us to identify the viral gene m42 of being responsible for CD45 down-modulation. Moreover, expression of m42 independent of viral infection upon retroviral transduction of the RAW264.7 macrophage cell line led to comparable regulation of CD45 expression. In immunocompetent mice infected with an m42 deletion mutant lower viral titers were observed in all tissues examined when compared to wildtype MCMV, indicating an important role of m42 for viral replication in vivo. The m42 gene product was identified as an 18 kDa protein expressed with early kinetics and is predicted to be a tail-anchored membrane protein. Tracking of surface-resident CD45 molecules revealed that m42 induces internalization and degradation of CD45. The observation that the amounts of the E3 ubiquitin ligases Itch and Nedd4 were diminished in cells expressing m42 and that disruption of a PY motif in the N-terminal part of m42 resulted in loss of function, suggest that m42 acts as an activator or adaptor for these Nedd4-like ubiquitin ligases, which mark CD45 for lysosomal degradation. In conclusion, the down-modulation of CD45 expression in MCMV-infected myeloid cells represents a novel pathway of virus-host interaction. Human cytomegalovirus (HCMV) is a tenacious pathogen, which can be life-threatening for immunocompromised patients and immunologically immature newborns. The pathogenicity of HCMV is owed to a plethora of immunomodulatory functions that interfere with host defense mechanisms. Such viral functions can teach us about viral pathogenesis mechanisms, and also about the functioning of immune cells. In this study we report that the mouse cytomegalovirus (MCMV)–a close relative of HCMV–influences surface expression of the cellular protein CD45 on macrophages and we identified the viral gene m42 mediating this effect. CD45 has long been known to be essential for the functioning of lymphocytes, however, its role in macrophages is less well understood. Growth analysis of a viral mutant indicated that the m42 gene confers a replication advantage to MCMV in vivo. We found that the m42 protein induces internalization of CD45 from the plasma membrane and degradation in lysosomes—most likely triggered by interaction of m42 with a ubiquitin ligase. In our study we detected a new element in the complex interaction of cytomegaloviruses with host cells, and further investigation into this mechanism may provide us with new insights into the functions of CD45 in myeloid cells.
Collapse
Affiliation(s)
- Nadine Thiel
- Institute of Virology, Hannover Medical School, Hannover, Germany
| | - Kirsten A Keyser
- Institute of Virology, Hannover Medical School, Hannover, Germany
| | - Niels A W Lemmermann
- Institute of Virology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | | | - Karen Wagner
- Institute of Virology, Hannover Medical School, Hannover, Germany
| | - Carina Elsner
- Institute of Virology, Hannover Medical School, Hannover, Germany
| | - Anne Halenius
- Institute of Virology, Medical Center, University of Freiburg, Freiburg, Germany
| | - Tihana Lenac Roviš
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Melanie M Brinkmann
- Institute of Virology, Hannover Medical School, Hannover, Germany
- Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Stipan Jonjić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Luka Cicin-Sain
- Institute of Virology, Hannover Medical School, Hannover, Germany
- Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Martin Messerle
- Institute of Virology, Hannover Medical School, Hannover, Germany
| |
Collapse
|
50
|
Armstrong SR, Wu H, Wang B, Abuetabh Y, Sergi C, Leng RP. The Regulation of Tumor Suppressor p63 by the Ubiquitin-Proteasome System. Int J Mol Sci 2016; 17:ijms17122041. [PMID: 27929429 PMCID: PMC5187841 DOI: 10.3390/ijms17122041] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/23/2016] [Accepted: 11/30/2016] [Indexed: 12/18/2022] Open
Abstract
The protein p63 has been identified as a homolog of the tumor suppressor protein p53 and is capable of inducing apoptosis, cell cycle arrest, or senescence. p63 has at least six isoforms, which can be divided into two major groups: the TAp63 variants that contain the N-terminal transactivation domain and the ΔNp63 variants that lack the N-terminal transactivation domain. The TAp63 variants are generally considered to be tumor suppressors involved in activating apoptosis and suppressing metastasis. ΔNp63 variants cannot induce apoptosis but can act as dominant negative inhibitors to block the function of TAp53, TAp73, and TAp63. p63 is rarely mutated in human tumors and is predominately regulated at the post-translational level by phosphorylation and ubiquitination. This review focuses primarily on regulation of p63 by the ubiquitin E-3 ligase family of enzymes via ubiquitination and proteasome-mediated degradation, and introduces a new key regulator of the p63 protein.
Collapse
Affiliation(s)
- Stephen R Armstrong
- 370 Heritage Medical Research Center, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB T6G 2S2, Canada.
| | - Hong Wu
- 370 Heritage Medical Research Center, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB T6G 2S2, Canada.
| | - Benfan Wang
- 370 Heritage Medical Research Center, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB T6G 2S2, Canada.
| | - Yasser Abuetabh
- 370 Heritage Medical Research Center, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB T6G 2S2, Canada.
| | - Consolato Sergi
- Department of Laboratory Medicine and Pathology (5B4. 09), University of Alberta, Edmonton, AB T6G 2B7, Canada.
| | - Roger P Leng
- 370 Heritage Medical Research Center, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB T6G 2S2, Canada.
| |
Collapse
|