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Cornelius RJ, Maeoka Y, McCormick JA. Renal effects of cullin 3 mutations causing familial hyperkalemic hypertension. Curr Opin Nephrol Hypertens 2023; 32:335-343. [PMID: 37070483 PMCID: PMC10330058 DOI: 10.1097/mnh.0000000000000891] [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: 04/19/2023]
Abstract
PURPOSE OF REVIEW Mutations in the E3 ubiquitin ligase scaffold cullin 3 (CUL3) cause the disease familial hyperkalemic hypertension (FHHt) by hyperactivating the NaCl cotransporter (NCC). The effects of these mutations are complex and still being unraveled. This review discusses recent findings revealing the molecular mechanisms underlying the effects of CUL3 mutations in the kidney. RECENT FINDINGS The naturally occurring mutations that cause deletion of exon 9 (CUL3-Δ9) from CUL3 generate an abnormal CUL3 protein. CUL3-Δ9 displays increased interaction with multiple ubiquitin ligase substrate adaptors. However, in-vivo data show that the major mechanism for disease pathogenesis is that CUL3-Δ9 promotes degradation of itself and KLHL3, the specific substrate adaptor for an NCC-activating kinase. CUL3-Δ9 displays dysregulation via impaired binding to the CSN and CAND1, which cause hyperneddylation and compromised adaptor exchange, respectively. A recently discovered CUL3 mutant (CUL3-Δ474-477) displays many similarities to CUL3-Δ9 mutations but some key differences that likely account for the milder FHHt phenotype it elicits. Furthermore, recent work suggests that CUL3 mutations could have unidentified complications in patients and/or a predisposition to renal injury. SUMMARY This review summarizes recent studies highlighting advances in our understanding of the renal mechanisms by which CUL3 mutations modulate blood pressure in FHHt.
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Affiliation(s)
- Ryan J Cornelius
- Division of Nephrology and Hypertension, Department of Medicine, Oregon Health and Science University, Portland, Oregon, USA
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102
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Chen L, Li Y, Chen Y. KLHL7 promotes hepatocellular carcinoma progression and molecular therapy resistance by degrading RASA2. iScience 2023; 26:106914. [PMID: 37378318 PMCID: PMC10291331 DOI: 10.1016/j.isci.2023.106914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/27/2022] [Accepted: 05/14/2023] [Indexed: 06/29/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a common aggressive tumor with a poor prognosis, and patients often seem to be refractory to the use of therapeutic drugs. In this study, we found that the KLHL7 expression was upregulated in HCC that was associated with poor patient prognosis. KLHL7 has been found to promote HCC development in both in vitro and in vivo experiments. Mechanistically, RASA2, a RAS GAP, was identified as a substrate of KLHL7. Upregulation of KLHL7 by growth factors promotes K48-linked polyubiquitination of RASA2 for degradation via the proteasomal pathway. Our in vivo experiments revealed that inhibition of KLHL7 in combination with lenvatinib treatment resulted in efficient killing of HCC cells. Together, these findings demonstrate a role for KLHL7 in HCC and reveal a mechanism by which growth factors regulate the RAS-MAPK pathway. It represents a potential therapeutic target for HCC.
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Affiliation(s)
- Lin Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yun Li
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yongheng Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
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103
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Han L, Chen Z, Sun L. Expression, purification, and microscopic characterization of the tumor suppressor KLHL6. Protein Expr Purif 2023:106318. [PMID: 37286065 DOI: 10.1016/j.pep.2023.106318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/22/2023] [Accepted: 06/04/2023] [Indexed: 06/09/2023]
Abstract
Kelch-like protein 6 (KLHL6) plays a critical role in preventing the development and survival of diffuse large B-cell lymphoma (DLBCL) through its involvement in the ubiquitin proteasome system. Specifically, KLHL6 binds to cullin3 (Cul3) and the substrate, facilitating the assembly of the E3 ligase responsible for substrate ubiquitination. It is imperative to investigate the precise function of KLHL6 by conducting a structural analysis of its interaction with Cul3. Here, we present the expression, purification, and characterization of the full-length KLHL6. Our findings demonstrate that the addition of a Sumo-tag significantly enhances the production of KLHL6, while also improving its stability and solubility. Moreover, through gel filtration and negative staining electron microscopy (EM), we observed that KLHL6 adopts a homomultimeric form in solution. Additionally, we found that the presence of Cul3NTD enhances the stability and homogeneity of KLHL6 by forming a complex. Consequently, the successful expression and purification of full-length KLHL6 serve as a foundation for further investigations into the structure and function of the KLHL6/Cullin3/Rbx1 substrate complex, as well as provide a potential strategy for studying other proteins within the KLHL family that possess similar characteristics.
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Affiliation(s)
- Lin Han
- Shanghai Fifth People's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Zhenguo Chen
- Shanghai Fifth People's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Lei Sun
- Shanghai Fifth People's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China.
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104
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Wang X, Chen C, Vuong D, Rodriguez-Rodriguez S, Lam V, Roleder C, Wang JH, Thiruvengadam SK, Berger A, Pennock N, Torka P, Hernandez-Ilizaliturri F, Siddiqi T, Wang L, Xia Z, Danilov AV. Pharmacologic targeting of Nedd8-activating enzyme reinvigorates T-cell responses in lymphoid neoplasia. Leukemia 2023; 37:1324-1335. [PMID: 37031300 PMCID: PMC10244170 DOI: 10.1038/s41375-023-01889-x] [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: 10/03/2022] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 04/10/2023]
Abstract
Neddylation is a sequential enzyme-based process which regulates the function of E3 Cullin-RING ligase (CRL) and thus degradation of substrate proteins. Here we show that CD8+ T cells are a direct target for therapeutically relevant anti-lymphoma activity of pevonedistat, a Nedd8-activating enzyme (NAE) inhibitor. Pevonedistat-treated patient-derived CD8+ T cells upregulated TNFα and IFNγ and exhibited enhanced cytotoxicity. Pevonedistat induced CD8+ T-cell inflamed microenvironment and delayed tumor progression in A20 syngeneic lymphoma model. This anti-tumor effect lessened when CD8+ T cells lost the ability to engage tumors through MHC class I interactions, achieved either through CD8+ T-cell depletion or genetic knockout of B2M. Meanwhile, loss of UBE2M in tumor did not alter efficacy of pevonedistat. Concurrent blockade of NAE and PD-1 led to enhanced tumor immune infiltration, T-cell activation and chemokine expression and synergistically restricted tumor growth. shRNA-mediated knockdown of HIF-1α, a CRL substrate, abrogated the in vitro effects of pevonedistat, suggesting that NAE inhibition modulates T-cell function in HIF-1α-dependent manner. scRNA-Seq-based clinical analyses in lymphoma patients receiving pevonedistat therapy demonstrated upregulation of interferon response signatures in immune cells. Thus, targeting NAE enhances the inflammatory T-cell state, providing rationale for checkpoint blockade-based combination therapy.
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Affiliation(s)
| | - Canping Chen
- Computational Biology Program, Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA
| | - Dan Vuong
- City of Hope National Medical Center, Duarte, CA, USA
| | | | - Vi Lam
- City of Hope National Medical Center, Duarte, CA, USA
| | - Carly Roleder
- City of Hope National Medical Center, Duarte, CA, USA
| | - Jing H Wang
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh, Pittsburgh, PA, USA
| | | | | | - Nathan Pennock
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Pallawi Torka
- Division of Hematology & Medical Oncology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | | | - Tanya Siddiqi
- City of Hope National Medical Center, Duarte, CA, USA
| | - Lili Wang
- City of Hope National Medical Center, Duarte, CA, USA
| | - Zheng Xia
- Computational Biology Program, Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, USA
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105
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Ong JY, Torres JZ. Cul3 substrate adaptor SPOP targets Nup153 for degradation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.13.540659. [PMID: 37293018 PMCID: PMC10245568 DOI: 10.1101/2023.05.13.540659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
SPOP is a Cul3 substrate adaptor responsible for degradation of many proteins related to cell growth and proliferation. Because mutation or misregulation of SPOP drives cancer progression, understanding the suite of SPOP substrates is important to understanding regulation of cell proliferation. Here, we identify Nup153, a component of the nuclear basket of the nuclear pore complex, as a novel substrate of SPOP. SPOP and Nup153 bind to each other and colocalize at the nuclear envelope and some nuclear foci in cells. The binding interaction between SPOP and Nup153 is complex and multivalent. Nup153 is ubiquitylated and degraded upon expression of SPOPWT but not its substrate binding-deficient mutant SPOPF102C. Depletion of SPOP via RNAi leads to Nup153 stabilization. Upon loss of SPOP, the nuclear envelope localization of spindle assembly checkpoint protein Mad1, which is tethered to the nuclear envelope by Nup153, is stronger. Altogether, our results demonstrate SPOP regulates Nup153 levels and expands our understanding of the role of SPOP in protein and cellular homeostasis.
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Affiliation(s)
- Joseph Y Ong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jorge Z Torres
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA
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106
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Pugnetti L, Curci D, Bidoli C, Gerdol M, Celsi F, Renzo S, Paci M, Lega S, Nonnis M, Maestro A, Brumatti LV, Lionetti P, Pallavicini A, Licastro D, Edomi P, Decorti G, Stocco G, Lucafò M, Bramuzzo M. Gene expression profiling in white blood cells reveals new insights into the molecular mechanisms of thalidomide in children with inflammatory bowel disease. Biomed Pharmacother 2023; 164:114927. [PMID: 37257228 DOI: 10.1016/j.biopha.2023.114927] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/09/2023] [Accepted: 05/22/2023] [Indexed: 06/02/2023] Open
Abstract
Thalidomide has emerged as an effective immunomodulator in the treatment of pediatric patients with inflammatory bowel disease (IBD) refractory to standard therapies. Cereblon (CRBN), a component of E3 protein ligase complex that mediates ubiquitination and proteasomal degradation of target proteins, has been identified as the primary target of thalidomide. CRBN plays a crucial role in thalidomide teratogenicity, however it is unclear whether it is also involved in the therapeutic effects in IBD patients. This study aimed at identifying the molecular mechanisms underpinning thalidomide action in pediatric IBD. In this study, ten IBD pediatric patients responsive to thalidomide were prospectively enrolled. RNA-sequencing (RNA-seq) analysis and functional enrichment analysis were carried out on peripheral blood mononuclear cells (PBMC) obtained before and after twelve weeks of treatment with thalidomide. RNA-seq analysis revealed 378 differentially expressed genes before and after treatment with thalidomide. The most deregulated pathways were cytosolic calcium ion concentration, cAMP-mediated signaling, eicosanoid signaling and inhibition of matrix metalloproteinases. Neuronal signaling mechanisms such as CREB signaling in neurons and axonal guidance signaling also emerged. Connectivity Map analysis revealed that thalidomide gene expression changes were similar to those exposed to MLN4924, an inhibitor of NEDD8 activating enzyme, suggesting that thalidomide exerts its immunomodulatory effects by acting on the ubiquitin-proteasome pathway. In vitro experiments on cell lines confirmed the effect of thalidomide on candidate altered pathways observed in patients. These results represent a unique resource for enhanced understanding of thalidomide mechanism in pediatric patients with IBD, providing novel potential targets associated with drug response.
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Affiliation(s)
- Letizia Pugnetti
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Italy
| | - Debora Curci
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Carlotta Bidoli
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Marco Gerdol
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Fulvio Celsi
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Sara Renzo
- Gastroenterology and Nutrition Unit, Meyer Children's Hospital IRCSS, 50139 Florence, Italy
| | - Monica Paci
- Gastroenterology and Nutrition Unit, Meyer Children's Hospital IRCSS, 50139 Florence, Italy
| | - Sara Lega
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Martina Nonnis
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Alessandra Maestro
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Liza Vecchi Brumatti
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Paolo Lionetti
- Gastroenterology and Nutrition Unit, Meyer Children's Hospital IRCSS, 50139 Florence, Italy; Department NEUROFARBA, University of Florence, 50139 Florence, Italy
| | | | | | - Paolo Edomi
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
| | - Giuliana Decorti
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Italy; Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Gabriele Stocco
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Italy; Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
| | - Marianna Lucafò
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
| | - Matteo Bramuzzo
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", 34137 Trieste, Italy
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107
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Maeoka Y, Cornelius RJ, McCormick JA. Cullin 3 and Blood Pressure Regulation: Insights From Familial Hyperkalemic Hypertension. Hypertension 2023; 80:912-923. [PMID: 36861484 PMCID: PMC10133098 DOI: 10.1161/hypertensionaha.123.20525] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
The study of rare monogenic forms of hypertension has led to the elucidation of important physiological pathways controlling blood pressure. Mutations in several genes cause familial hyperkalemic hypertension (also known as Gordon syndrome or pseudohypoaldosteronism type II). The most severe form of familial hyperkalemic hypertension is caused by mutations in CUL3, encoding CUL3 (Cullin 3)-a scaffold protein in an E3 ubiquitin ligase complex that tags substrates for proteasomal degradation. In the kidney, CUL3 mutations cause accumulation of the substrate WNK (with-no-lysine [K]) kinase and ultimately hyperactivation of the renal NaCl cotransporter-the target of the first-line antihypertensive thiazide diuretics. The precise mechanisms by which mutant CUL3 causes WNK kinase accumulation have been unclear, but several functional defects are likely to contribute. The hypertension seen in familial hyperkalemic hypertension also results from effects exerted by mutant CUL3 on several pathways in vascular smooth muscle and endothelium that modulate vascular tone. This review summarizes the mechanisms by which wild type and mutant CUL3 modulate blood pressure through effects on the kidney and vasculature, potential effects in the central nervous system and heart, and future directions for investigation.
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Affiliation(s)
- Yujiro Maeoka
- Division of Nephrology and Hypertension, Department of Medicine, Oregon Health and Science University, Portland, OR
| | - Ryan J Cornelius
- Division of Nephrology and Hypertension, Department of Medicine, Oregon Health and Science University, Portland, OR
| | - James A McCormick
- Division of Nephrology and Hypertension, Department of Medicine, Oregon Health and Science University, Portland, OR
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108
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Gidhi A, Mohapatra A, Fatima M, Jha SK, Kumar M, Mukhopadhyay K. Insights of auxin signaling F-box genes in wheat (Triticum aestivum L.) and their dynamic expression during the leaf rust infection. PROTOPLASMA 2023; 260:723-739. [PMID: 36100728 DOI: 10.1007/s00709-022-01808-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
The TRANSPORT INHIBITOR RESPONSE 1/AUXIN SIGNALING F-BOX (TIR1/AFB) protein serves as auxin receptor and links with Aux/IAA repressor protein leading to its degradation via SKP-Cullin-F box (SCFTIR1/AFB) complex in the auxin signaling pathway. Present study revealed 11 TIR1/AFB genes in wheat by genome-wide search using AFB HMM profile. Phylogenetic analysis clustered these genes in two classes. Several phytohormone, abiotic, and biotic stress responsive cis-elements were detected in promoter regions of TIR1/AFB genes. These genes were localized on homoeologous chromosome groups 2, 3, and 5 showing orthologous relation with other monocot plants. Most genes were interrupted by introns and the gene products were localized in cytoplasm, nucleus, and cell organelles. TaAFB3, TaAFB5, and TaAFB8 had nuclear localization signals. The evolutionary constraint suggested paralogous sister pairs and orthologous genes went through strong purifying selection process and are slowly evolving at protein level. Functional annotation revealed all TaAFB genes participated in auxin activated signaling pathway and SCF-mediated ubiquitination process. Furthermore, in silico expression study revealed their diverse expression profiles during various developmental stages in different tissues and organs as well as during biotic and abiotic stress. QRT-PCR based studies suggested distinct expression pattern of TIR1-1, TIR1-3, TaAFB1, TaAFB2, TaAFB3, TaAFB4, TaAFB5, TaAFB7, and TaAFB8 displaying maximum expression at 24 and 48 h post inoculation in both susceptible and resistant near isogenic wheat lines infected with leaf rust pathogen. Importantly, this also reflects coordinated responses in expression patterns of wheat TIR1/AFB genes during progression stages of leaf rust infection.
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Affiliation(s)
- Anupama Gidhi
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India
| | - Archit Mohapatra
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India
| | - Mehar Fatima
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India
| | - Shailendra Kumar Jha
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Manish Kumar
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India
| | - Kunal Mukhopadhyay
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India.
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109
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Shin MC, Jung YH, Jeong Y, Oh AR, Lee SB, Kim K. Kctd17-mediated Chop degradation promotes adipogenic differentiation. Biochem Biophys Res Commun 2023; 653:126-132. [PMID: 36868076 DOI: 10.1016/j.bbrc.2023.02.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/17/2023] [Accepted: 02/24/2023] [Indexed: 02/27/2023]
Abstract
Obesity is commonly associated with excessive adipogenesis, a process by which preadipocytes undergo differentiation into mature adipocytes; however, the mechanisms underlying adipogenesis are not completely understood. Potassium channel tetramerization domain-containing 17 (Kctd17) belongs to the Kctd superfamily and act as a substrate adaptor of the Cullin 3-RING E3 ubiquitin ligase, which is involved in a wide variety of cell functions. However, its function in the adipose tissue remains largely unknown. Here, we found that Kctd17 expression levels were increased in white adipose tissue, especially in adipocytes, in obese mice compared to lean control mice. Gain or loss of function of Kctd17 in preadipocytes inhibited or promoted adipogenesis, respectively. Furthermore, we found that Kctd17 bound to C/EBP homologous protein (Chop) to target it for ubiquitin-mediated degradation, and this process was likely associated with increased adipogenesis. In conclusion, these data suggest that Kctd17 plays an important role in adipogenesis and can be a novel therapeutic target for obesity.
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Affiliation(s)
- Min Cheol Shin
- Department of Biomedical Sciences, College of Medicine, Inha University, Republic of Korea; Program in Biomedical Science & Engineering, Inha University, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Young Hoon Jung
- Department of Biomedical Sciences, College of Medicine, Inha University, Republic of Korea; Program in Biomedical Science & Engineering, Inha University, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Yelin Jeong
- Department of Biomedical Sciences, College of Medicine, Inha University, Republic of Korea; Program in Biomedical Science & Engineering, Inha University, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Ah-Reum Oh
- Department of Biomedical Sciences, College of Medicine, Inha University, Republic of Korea; Program in Biomedical Science & Engineering, Inha University, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Sang Bae Lee
- Division of Life Sciences, Jeonbuk National University, Jeonju, 54896, Republic of Korea.
| | - KyeongJin Kim
- Department of Biomedical Sciences, College of Medicine, Inha University, Republic of Korea; Program in Biomedical Science & Engineering, Inha University, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, 22212, Republic of Korea.
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110
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Xu K, Liu Q, Huang W, Chu Y, Fan W, Liu J, He Y, Huang F. Promotive Effect of FBXO32 on the Odontoblastic Differentiation of Human Dental Pulp Stem Cells. Int J Mol Sci 2023; 24:ijms24097708. [PMID: 37175415 PMCID: PMC10178205 DOI: 10.3390/ijms24097708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/11/2023] [Accepted: 04/15/2023] [Indexed: 05/15/2023] Open
Abstract
Odontoblastic differentiation of human dental pulp stem cells (hDPSCs) is crucial for the intricate formation and repair processes in dental pulp. Until now, the literature is not able to demonstrate the role of ubiquitination in the odontoblastic differentiation of hDPSCs. This study investigated the role of F-box-only protein 32 (FBXO32), an E3 ligase, in the odontoblastic differentiation of hDPSCs. The mRNA expression profile was obtained from ribonucleic acid sequencing (RNA-Seq) data and analyzed. Immunofluorescence and immunohistochemical staining identify the FBXO32 expression in human dental pulp and hDPSCs. Small-hairpin RNA lentivirus was used for FBXO32 knockdown and overexpression. Odontoblastic differentiation of hDPSCs was determined via alkaline phosphatase activity, Alizarin Red S staining, and mRNA and protein expression levels were detected using real-time quantitative polymerase chain reaction and Western blotting. Furthermore, subcutaneous transplantation in nude mice was performed to evaluate the role of FBXO32 in mineralization in vivo using histological analysis. FBXO32 expression was upregulated in the odontoblast differentiated hDPSCs as evidenced by RNA-Seq data analysis. FBXO32 was detected in hDPSCs and the odontoblast layer of the dental pulp. Increased FBXO32 expression in hDPSCs during odontoblastic differentiation was confirmed. Through lentivirus infection method, FBXO32 downregulation in hDPSCs attenuated odontoblastic differentiation in vitro and in vivo, whereas FBXO32 upregulation promoted the hDPSCs odontoblastic differentiation, without affecting proliferation and migration. This study demonstrated, for the first time, the promotive role of FBXO32 in regulating the odontoblastic differentiation of hDPSCs, thereby providing novel insights into the regulatory mechanisms during odontoblastic differentiation in hDPSCs.
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Affiliation(s)
- Ke Xu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Qin Liu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Wushuang Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Yanhao Chu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Wenguo Fan
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Jiawei Liu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Yifan He
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Fang Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
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111
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Wang F, He Q, Zhan W, Yu Z, Finkin-Groner E, Ma X, Lin G, Li H. Structure of the human UBR5 E3 ubiquitin ligase. Structure 2023; 31:541-552.e4. [PMID: 37040767 PMCID: PMC10403316 DOI: 10.1016/j.str.2023.03.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 03/02/2023] [Accepted: 03/16/2023] [Indexed: 04/13/2023]
Abstract
The human UBR5 is a single polypeptide chain homology to E6AP C terminus (HECT)-type E3 ubiquitin ligase essential for embryonic development in mammals. Dysregulated UBR5 functions like an oncoprotein to promote cancer growth and metastasis. Here, we report that UBR5 assembles into a dimer and a tetramer. Our cryoelectron microscopy (cryo-EM) structures reveal that two crescent-shaped UBR5 monomers assemble head to tail to form the dimer, and two dimers bind face to face to form the cage-like tetramer with all four catalytic HECT domains facing the central cavity. Importantly, the N-terminal region of one subunit and the HECT of the other form an "intermolecular jaw" in the dimer. We show the jaw-lining residues are important for function, suggesting that the intermolecular jaw functions to recruit ubiquitin-loaded E2 to UBR5. Further work is needed to understand how oligomerization regulates UBR5 ligase activity. This work provides a framework for structure-based anticancer drug development and contributes to a growing appreciation of E3 ligase diversity.
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Affiliation(s)
- Feng Wang
- Department of Structural Biology, Van Andel Institute, 333 Bostwick Avenue NE, Grand Rapids, MI 49503, USA
| | - Qing He
- Department of Structural Biology, Van Andel Institute, 333 Bostwick Avenue NE, Grand Rapids, MI 49503, USA
| | - Wenhu Zhan
- Department of Microbiology & Immunology, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA
| | - Ziqi Yu
- Department of Microbiology & Immunology, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA
| | - Efrat Finkin-Groner
- Tri-Institutional Therapeutics Discovery Institute, 413 E. 69th Street, New York, NY 10021, USA
| | - Xiaojing Ma
- Department of Microbiology & Immunology, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA
| | - Gang Lin
- Department of Microbiology & Immunology, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA.
| | - Huilin Li
- Department of Structural Biology, Van Andel Institute, 333 Bostwick Avenue NE, Grand Rapids, MI 49503, USA.
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112
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Zhang X, Liu Y, Zhang T, Tan Y, Dai X, Yang YG, Zhang X. Advances in the potential roles of Cullin-RING ligases in regulating autoimmune diseases. Front Immunol 2023; 14:1125224. [PMID: 37006236 PMCID: PMC10064048 DOI: 10.3389/fimmu.2023.1125224] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 02/28/2023] [Indexed: 03/19/2023] Open
Abstract
Cullin-RING ligases (CRLs) are the largest class of E3 ubiquitin ligases regulating the stability and subsequent activity of a large number of important proteins responsible for the development and progression of various diseases, including autoimmune diseases (AIDs). However, the detailed mechanisms of the pathogenesis of AIDs are complicated and involve multiple signaling pathways. An in-depth understanding of the underlying regulatory mechanisms of the initiation and progression of AIDs will aid in the development of effective therapeutic strategies. CRLs play critical roles in regulating AIDs, partially by affecting the key inflammation-associated pathways such as NF-κB, JAK/STAT, and TGF-β. In this review, we summarize and discuss the potential roles of CRLs in the inflammatory signaling pathways and pathogenesis of AIDs. Furthermore, advances in the development of novel therapeutic strategies for AIDs through targeting CRLs are also highlighted.
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Affiliation(s)
- Xiaoying Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital, Jilin University, Changchun, China
| | - Yu’e Liu
- Tongji University Cancer Center, Shanghai Tenth People’s Hospital of Tongji University, School of Medicine, Tongji University, Shanghai, China
| | - Tong Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital, Jilin University, Changchun, China
| | - Yuying Tan
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital, Jilin University, Changchun, China
| | - Xiangpeng Dai
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital, Jilin University, Changchun, China
- *Correspondence: Xiangpeng Dai, ; Yong-Guang Yang, ; Xiaoling Zhang,
| | - Yong-Guang Yang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital, Jilin University, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
- *Correspondence: Xiangpeng Dai, ; Yong-Guang Yang, ; Xiaoling Zhang,
| | - Xiaoling Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital, Jilin University, Changchun, China
- *Correspondence: Xiangpeng Dai, ; Yong-Guang Yang, ; Xiaoling Zhang,
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113
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Rashpa R, Klages N, Schvartz D, Pasquarello C, Brochet M. The Skp1-Cullin1-FBXO1 complex is a pleiotropic regulator required for the formation of gametes and motile forms in Plasmodium berghei. Nat Commun 2023; 14:1312. [PMID: 36898988 PMCID: PMC10006092 DOI: 10.1038/s41467-023-36999-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 02/27/2023] [Indexed: 03/12/2023] Open
Abstract
Malaria-causing parasites of the Plasmodium genus undergo multiple developmental phases in the human and the mosquito hosts, regulated by various post-translational modifications. While ubiquitination by multi-component E3 ligases is key to regulate a wide range of cellular processes in eukaryotes, little is known about its role in Plasmodium. Here we show that Plasmodium berghei expresses a conserved SKP1/Cullin1/FBXO1 (SCFFBXO1) complex showing tightly regulated expression and localisation across multiple developmental stages. It is key to cell division for nuclear segregation during schizogony and centrosome partitioning during microgametogenesis. It is additionally required for parasite-specific processes including gamete egress from the host erythrocyte, as well as integrity of the apical and the inner membrane complexes (IMC) in merozoite and ookinete, two structures essential for the dissemination of these motile stages. Ubiquitinomic surveys reveal a large set of proteins ubiquitinated in a FBXO1-dependent manner including proteins important for egress and IMC organisation. We additionally demonstrate an interplay between FBXO1-dependent ubiquitination and phosphorylation via calcium-dependent protein kinase 1. Altogether we show that Plasmodium SCFFBXO1 plays conserved roles in cell division and is also important for parasite-specific processes in the mammalian and mosquito hosts.
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Affiliation(s)
- Ravish Rashpa
- University of Geneva, Faculty of Medicine, Department of Microbiology and Molecular Medicine, Geneva, Switzerland.
| | - Natacha Klages
- University of Geneva, Faculty of Medicine, Department of Microbiology and Molecular Medicine, Geneva, Switzerland
| | - Domitille Schvartz
- University of Geneva, Faculty of Medicine, Proteomics Core Facility, Geneva, Switzerland
| | - Carla Pasquarello
- University of Geneva, Faculty of Medicine, Proteomics Core Facility, Geneva, Switzerland
| | - Mathieu Brochet
- University of Geneva, Faculty of Medicine, Department of Microbiology and Molecular Medicine, Geneva, Switzerland.
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114
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Oh AR, Jeong Y, Yu J, Minh Tam DT, Kang JK, Jung YH, Im SS, Lee SB, Ryu D, Pajvani UB, Kim K. Hepatocyte Kctd17 Inhibition Ameliorates Glucose Intolerance and Hepatic Steatosis Caused by Obesity-induced Chrebp Stabilization. Gastroenterology 2023; 164:439-453. [PMID: 36402191 PMCID: PMC9975067 DOI: 10.1053/j.gastro.2022.11.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 10/13/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND & AIMS Obesity predisposes to type 2 diabetes (T2D) and nonalcoholic fatty liver disease (NAFLD), but underlying mechanisms are incompletely understood. Potassium channel tetramerization domain-containing protein 17 (Kctd17) levels are increased in livers from obese mice and humans. In this study, we investigated the mechanism of increased Kctd17 and whether it is causal to obesity-induced metabolic complications. METHODS We transduced Rosa26-LSL-Cas9 knockin mice with AAV8-TBG-Cre (Control), AAV8-U6-Kctd17 sgRNA-TBG-Cre (L-Kctd17), AAV8-U6-Oga sgRNA-TBG-Cre (L-Oga), or AAV8-U6-Kctd17/Oga sgRNA-TBG-Cre (DKO). We fed mice a high-fat diet (HFD) and assessed for hepatic glucose and lipid homeostasis. We generated Kctd17, O-GlcNAcase (Oga), or Kctd17/Oga-knockout hepatoma cells by CRISPR-Cas9, and Kctd17-directed antisense oligonucleotide to test therapeutic potential in vivo. We analyzed transcriptomic data from patients with NAFLD. RESULTS Hepatocyte Kctd17 expression was increased in HFD-fed mice due to increased Srebp1c activity. HFD-fed L-Kctd17 or Kctd17 antisense oligonucleotide-treated mice show improved glucose tolerance and hepatic steatosis, whereas forced Kctd17 expression caused glucose intolerance and hepatic steatosis even in lean mice. Kctd17 induced Oga degradation, resulting in increasing carbohydrate response element-binding protein (Chrebp) protein, so concomitant Oga knockout negated metabolic benefits of hepatocyte Kctd17 deletion. In patients with NAFLD, KCTD17 messenger RNA was positively correlated with expression of Chrebp target and other lipogenic genes. CONCLUSIONS Srebp1c-induced hepatocyte Kctd17 expression in obesity disrupted glucose and lipid metabolism by stabilizing Chrebp, and may represent a novel therapeutic target for obesity-induced T2D and NAFLD.
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Affiliation(s)
- Ah-Reum Oh
- Department of Biological Sciences, College of Medicine, Inha University, Incheon, Republic of Korea; Program in Biomedical Science and Engineering, Inha University, Incheon, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, Republic of Korea
| | - Yelin Jeong
- Department of Biological Sciences, College of Medicine, Inha University, Incheon, Republic of Korea; Program in Biomedical Science and Engineering, Inha University, Incheon, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, Republic of Korea
| | - Junjie Yu
- Department of Medicine, Columbia University, New York, New York
| | - Dao Thi Minh Tam
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Jin Ku Kang
- Department of Medicine, Columbia University, New York, New York
| | - Young Hoon Jung
- Department of Biological Sciences, College of Medicine, Inha University, Incheon, Republic of Korea; Program in Biomedical Science and Engineering, Inha University, Incheon, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, Republic of Korea
| | - Seung-Soon Im
- Department of Physiology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Sang Bae Lee
- Division of Life Sciences, Jeonbuk National University, Jeonju, Republic of Korea
| | - Dongryeol Ryu
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Utpal B Pajvani
- Department of Medicine, Columbia University, New York, New York.
| | - KyeongJin Kim
- Department of Biological Sciences, College of Medicine, Inha University, Incheon, Republic of Korea; Program in Biomedical Science and Engineering, Inha University, Incheon, Republic of Korea; Research Center for Controlling Intercellular Communication (RCIC), College of Medicine, Inha University, Incheon, Republic of Korea.
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115
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Moretti T, Kim K, Tuladhar A, Kim J. KLHL12 can form large COPII structures in the absence of CUL3 neddylation. Mol Biol Cell 2023; 34:br4. [PMID: 36652337 PMCID: PMC10011723 DOI: 10.1091/mbc.e22-08-0383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
CUL3-RING ubiquitin ligases (CRL3s) are involved in various cellular processes through different Bric-a-brac, Tramtrack, and Broad-complex (BTB)-domain proteins. KLHL12, a BTB-domain protein, is suggested to play an essential role in the export of large cargo molecules such as procollagen from the endoplasmic reticulum (ER). CRL3KLHL12 monoubiquitylates SEC31, leading to an increase in COPII vesicle dimension. Enlarged COPII vesicles can accommodate procollagen molecules. Thus, CRL3KLHL12 is essential for the assembly of large COPII structures and collagen secretion. CRL3s are activated by CUL3 neddylation. Here, we evaluated the importance of CUL3 neddylation in COPII assembly and collagen secretion. Unexpectedly, the assembly of large COPII-KLHL12 structures persisted and cellular collagen levels decreased on treatment with MLN4924, a potent inhibitor of NEDD8-activating enzyme. When we introduced mutations into KLHL12 at the CUL3 interface, these KLHL12 variants did not interact with neddylated CUL3, but one of them (Mut A) still supported large COPII-KLHL12 structures. Overexpression of wild-type KLHL12, but not Mut A, lowered cellular collagen levels most likely via lysosomal degradation. Our results suggest that CUL3 neddylation is not necessary for the formation of large COPII-KLHL12 structures, but active CRL3KLHL12 contributes to the maintenance of collagen levels in the cell.
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Affiliation(s)
- Tamara Moretti
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
| | - Kyungho Kim
- Targeted Therapy Branch, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
| | - Astha Tuladhar
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
| | - Jinoh Kim
- Department of Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA 50011
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116
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Hanzl A, Casement R, Imrichova H, Hughes SJ, Barone E, Testa A, Bauer S, Wright J, Brand M, Ciulli A, Winter GE. Functional E3 ligase hotspots and resistance mechanisms to small-molecule degraders. Nat Chem Biol 2023; 19:323-333. [PMID: 36329119 PMCID: PMC7614256 DOI: 10.1038/s41589-022-01177-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/20/2022] [Indexed: 11/06/2022]
Abstract
Targeted protein degradation is a novel pharmacology established by drugs that recruit target proteins to E3 ubiquitin ligases. Based on the structure of the degrader and the target, different E3 interfaces are critically involved, thus forming defined 'functional hotspots'. Understanding disruptive mutations in functional hotspots informs on the architecture of the assembly, and highlights residues susceptible to acquire resistance phenotypes. Here we employ haploid genetics to show that hotspot mutations cluster in substrate receptors of hijacked ligases, where mutation type and frequency correlate with gene essentiality. Intersection with deep mutational scanning revealed hotspots that are conserved or specific for chemically distinct degraders and targets. Biophysical and structural validation suggests that hotspot mutations frequently converge on altered ternary complex assembly. Moreover, we validated hotspots mutated in patients that relapse from degrader treatment. In sum, we present a fast and widely accessible methodology to characterize small-molecule degraders and associated resistance mechanisms.
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Affiliation(s)
- Alexander Hanzl
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Ryan Casement
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dundee, UK
| | - Hana Imrichova
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Scott J Hughes
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dundee, UK
- Amphista Therapeutics Ltd., Newhouse, UK
| | - Eleonora Barone
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Andrea Testa
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dundee, UK
- Amphista Therapeutics Ltd., Newhouse, UK
| | - Sophie Bauer
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Proxygen GmbH, Vienna, Austria
| | - Jane Wright
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dundee, UK
| | - Matthias Brand
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Proxygen GmbH, Vienna, Austria
| | - Alessio Ciulli
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dundee, UK.
| | - Georg E Winter
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.
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117
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Huang S, Gao Y, Wang Y, Li F, Xiao W, Ge WP, Li Y, Xu P. Fluorescein-labeled ThUBD probe for super-sensitive visualization of polyubiquitination signal in situ cells. Talanta 2023; 253:123564. [PMID: 35710467 DOI: 10.1016/j.talanta.2022.123564] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/09/2022] [Accepted: 05/16/2022] [Indexed: 12/13/2022]
Abstract
Ubiquitin-binding domains (UBDs) are modular elements that bind non-covalently to the ubiquitin and ubiquitin chains. The preferences of UBDs for ubiquitin chains of specific length and linkage are central to their functions. We demonstrated that an artificial tandem hybrid UBD (ThUBD) exhibits an unbiased high affinity to all ubiquitin chains and is a promising tool for global ubiquitination profiling research. In this study, we labeled fluorescein on the four cysteine residues in the N-terminal glutathione S-transferase (GST) tag of ThUBD, generating a fluorescein-labeled ThUBD (ThUBD-Flu) probe for direct polyubiquitination signal imaging and visualization. Compared to the canonical ubiquitin antibody method, the ThUBD-Flu is hyper-sensitive and accurate to detect ubiquitination signal. More importantly, the ThUBD-Flu probe provided, for the first time, a widely applicable, super-sensitive and unbiased technique for in situ detection of intracellular polyubiquitination signal through immunofluorescence staining, which was only achievable with recombinant fluorescence tag fused ubiquitin gene previously. We propose that ThUBD-Flu, combined with evolving microscopy technology, could serve as prototypes to track and trace cellular polyubiquitination signal in vivo.
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Affiliation(s)
- Shuai Huang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, 102206, PR China
| | - Yuan Gao
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, 102206, PR China
| | - Yonghong Wang
- Medical School of Guizhou University, Guiyang, 550025, China
| | - Fengzhi Li
- Chinese Institute for Brain Research, Beijing, 102206, China
| | - Weidi Xiao
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, 102206, PR China
| | - Woo-Ping Ge
- Chinese Institute for Brain Research, Beijing, 102206, China
| | - Yanchang Li
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, 102206, PR China; Hebei Province Key Lab of Research and Application on Microbial Diversity, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China.
| | - Ping Xu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences Beijing, Research Unit of Proteomics & Research and Development of New Drug of Chinese Academy of Medical Sciences, Institute of Lifeomics, Beijing, 102206, PR China; School of Basic Medical Science, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery of Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, PR China; Hebei Province Key Lab of Research and Application on Microbial Diversity, College of Life Sciences, Hebei University, Baoding, Hebei, 071002, China; Medical School of Guizhou University, Guiyang, 550025, China; Second Clinical Medicine Collage, Guangzhou University Chinese Medicine, Guangzhou, 510006, China.
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118
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Xu M, Zhou Y, Fan S, Zhang M, Gao X. Cul5 mediates taurine-stimulated mTOR mRNA expression and proliferation of mouse mammary epithelial cells. Amino Acids 2023; 55:243-252. [PMID: 36449095 DOI: 10.1007/s00726-022-03222-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 11/24/2022] [Indexed: 12/02/2022]
Abstract
Cullin5 (Cul5) protein can regulate multiple signaling pathways; however, it is still largely unknown the role and molecule mechanism of Cul5 in regulation of the mTOR signaling. In this study, we determined the effect of Cul5 on the proliferation of HC11 cells, a mouse mammary epithelial cell line, and explored the corresponding molecular mechanism. We found that Cul5 was highly expressed in mammary gland tissues in the lactation stage compared with that in puberty and involution. Using gene knockdown and activation methods, we showed that Cul5 promoted proliferation of HC11 cells, mRNA expression and protein phosphorylation of mTOR. Taurine (Tau) affected Cul5 mRNA and protein levels in a dose-dependent manner. Cul5 localized to the nucleus and knockdown of Cul5 almost totally blocked the stimulation of Tau on mTOR mRNA expression and protein phosphorylation. PI3K inhibition almost totally abolished the stimulation of Tau on Cul5 expression. In summary, our data uncover that Cul5 is a positive regulator of proliferation of HC11 cells, and mediates the stimulation of Tau on mRNA expression and subsequent protein phosphorylation of mTOR. Our data lay a new theoretical foundation for regulating mammary cell proliferation and promoting milk yield.
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Affiliation(s)
- Ming Xu
- College of Animal Science, Yangtze University, Jingzhou, 434025, China
| | - Yuwen Zhou
- College of Animal Science, Yangtze University, Jingzhou, 434025, China
| | - Sihua Fan
- College of Animal Science, Yangtze University, Jingzhou, 434025, China
| | - Minghui Zhang
- College of Animal Science, Yangtze University, Jingzhou, 434025, China
| | - Xuejun Gao
- College of Animal Science, Yangtze University, Jingzhou, 434025, China.
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119
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Zou J, Wang W, Lu Y, Ayala J, Dong K, Zhou H, Wang J, Chen W, Weintraub NL, Zhou J, Li J, Su H. Neddylation is required for perinatal cardiac development through stimulation of metabolic maturation. Cell Rep 2023; 42:112018. [PMID: 36662623 PMCID: PMC10029150 DOI: 10.1016/j.celrep.2023.112018] [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] [Received: 04/27/2022] [Revised: 11/23/2022] [Accepted: 01/05/2023] [Indexed: 01/21/2023] Open
Abstract
Cardiac maturation is crucial for postnatal cardiac development and is increasingly known to be regulated by a series of transcription factors. However, post-translational mechanisms regulating this process remain unclear. Here we report the indispensable role of neddylation in cardiac maturation. Mosaic deletion of NAE1, an essential enzyme for neddylation, in neonatal hearts results in the rapid development of cardiomyopathy and heart failure. NAE1 deficiency disrupts transverse tubule formation, inhibits physiological hypertrophy, and represses fetal-to-adult isoform switching, thus culminating in cardiomyocyte immaturation. Mechanistically, we find that neddylation is needed for the perinatal metabolic transition from glycolytic to oxidative metabolism in cardiomyocytes. Further, we show that HIF1α is a putative neddylation target and that inhibition of neddylation accumulates HIF1α and impairs fatty acid utilization and bioenergetics in cardiomyocytes. Together, our data show neddylation is required for cardiomyocyte maturation through promoting oxidative metabolism in the developing heart.
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Affiliation(s)
- Jianqiu Zou
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Wenjuan Wang
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Yi Lu
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Juan Ayala
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Kunzhe Dong
- Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Hongyi Zhou
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Jinxi Wang
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Weiqin Chen
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Neal L Weintraub
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Jiliang Zhou
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Jie Li
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; Division of Cardiology, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Huabo Su
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; Department of Pharmacology and Toxicology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA.
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120
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Liang D, Jiang L, Bhat SA, Missiroli S, Perrone M, Lauriola A, Adhikari R, Gudur A, Vasi Z, Ahearn I, Guardavaccaro D, Giorgi C, Philips M, Kuchay S. Palmitoylation and PDE6δ regulate membrane-compartment-specific substrate ubiquitylation and degradation. Cell Rep 2023; 42:111999. [PMID: 36662618 PMCID: PMC9988375 DOI: 10.1016/j.celrep.2023.111999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 11/11/2022] [Accepted: 01/04/2023] [Indexed: 01/20/2023] Open
Abstract
Substrate degradation by the ubiquitin proteasome system (UPS) in specific membrane compartments remains elusive. Here, we show that the interplay of two lipid modifications and PDE6δ regulates compartmental substrate targeting via the SCFFBXL2. FBXL2 is palmitoylated in a prenylation-dependent manner on cysteines 417 and 419 juxtaposed to the CaaX motif. Palmitoylation/depalmitoylation regulates its subcellular trafficking for substrate engagement and degradation. To control its subcellular distribution, lipid-modified FBXL2 interacts with PDE6δ. Perturbing the equilibrium between FBXL2 and PDE6δ disrupts the delivery of FBXL2 to all membrane compartments, whereas depalmitoylated FBXL2 is enriched on the endoplasmic reticulum (ER). Depalmitoylated FBXL2(C417S/C419S) promotes the degradation of IP3R3 at the ER, inhibits IP3R3-dependent mitochondrial calcium overload, and counteracts calcium-dependent cell death upon oxidative stress. In contrast, disrupting the PDE6δ-FBXL2 equilibrium has the opposite effect. These findings describe a mechanism underlying spatially-restricted substrate degradation and suggest that inhibition of FBXL2 palmitoylation and/or binding to PDE6δ may offer therapeutic benefits.
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Affiliation(s)
- David Liang
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, MBRB #1157, Chicago, IL 60607, USA
| | - Liping Jiang
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, MBRB #1157, Chicago, IL 60607, USA
| | - Sameer Ahmed Bhat
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, MBRB #1157, Chicago, IL 60607, USA
| | - Sonia Missiroli
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Mariasole Perrone
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Angela Lauriola
- Department of Biotechnology, University of Verona, 37134 Verona, Italy
| | - Ritika Adhikari
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, MBRB #1157, Chicago, IL 60607, USA
| | - Anish Gudur
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, MBRB #1157, Chicago, IL 60607, USA
| | - Zahra Vasi
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, MBRB #1157, Chicago, IL 60607, USA
| | - Ian Ahearn
- Department of Dermatology and Perlmutter Cancer Center, New York University Grossman School of Medicine, New York, NY 10016, USA
| | | | - Carlotta Giorgi
- Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Mark Philips
- Department of Medicine and Perlmutter Cancer Center, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Shafi Kuchay
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, MBRB #1157, Chicago, IL 60607, USA.
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Zhou L, Lin X, Zhu J, Zhang L, Chen S, Yang H, Jia L, Chen B. NEDD8-conjugating enzyme E2s: critical targets for cancer therapy. Cell Death Dis 2023; 9:23. [PMID: 36690633 PMCID: PMC9871045 DOI: 10.1038/s41420-023-01337-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/24/2023]
Abstract
NEDD8-conjugating enzymes, E2s, include the well-studied ubiquitin-conjugating enzyme E2 M (UBE2M) and the poorly characterized ubiquitin-conjugating enzyme E2 F (UBE2F). UBE2M and UBE2F have distinct and prominent roles in catalyzing the neddylation of Cullin or non-Cullin substrates. These enzymes are overexpressed in various malignancies, conferring a worse overall survival. Targeting UBE2M to influence tumor growth by either modulating several biological responses of tumor cells (such as DNA-damage response, apoptosis, or senescence) or regulating the anti-tumor immunity holds strong therapeutic potential. Multiple inhibitors that target the interaction between UBE2M and defective cullin neddylation protein 1 (DCN1), a co-E3 for neddylation, exhibit promising anti-tumor effects. By contrast, the potential benefits of targeting UBE2F are still to be explored. It is currently reported to inhibit apoptosis and then induce cell growth; hence, targeting UBE2F serves as an effective chemo-/radiosensitizing strategy by triggering apoptosis. This review highlights the most recent advances in the roles of UBE2M and UBE2F in tumor progression, indicating these E2s as two promising anti-tumor targets.
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Affiliation(s)
- Lisha Zhou
- grid.440657.40000 0004 1762 5832Taizhou Central Hospital (Taizhou University Hospital), Taizhou University, Taizhou, Zhejiang China
| | - Xiongzhi Lin
- grid.412026.30000 0004 1776 2036Graduate School of Medicine, Hebei North University, Zhangjiakou, Hebei China
| | - Jin Zhu
- grid.452533.60000 0004 1763 3891Department of Surgical Oncology, Jiangxi Cancer Hospital, Nanchang, Jiangxi China
| | - Luyi Zhang
- grid.440657.40000 0004 1762 5832Taizhou Central Hospital (Taizhou University Hospital), Taizhou University, Taizhou, Zhejiang China
| | - Siyuan Chen
- grid.440657.40000 0004 1762 5832Taizhou Central Hospital (Taizhou University Hospital), Taizhou University, Taizhou, Zhejiang China
| | - Hui Yang
- grid.8547.e0000 0001 0125 2443Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Lijun Jia
- grid.411480.80000 0004 1799 1816Cancer Institute of Traditional Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Baofu Chen
- grid.440657.40000 0004 1762 5832Taizhou Central Hospital (Taizhou University Hospital), Taizhou University, Taizhou, Zhejiang China
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Hanzl A, Barone E, Bauer S, Yue H, Nowak RP, Hahn E, Pankevich EV, Koren A, Kubicek S, Fischer ES, Winter GE. E3-Specific Degrader Discovery by Dynamic Tracing of Substrate Receptor Abundance. J Am Chem Soc 2023; 145:1176-1184. [PMID: 36602777 PMCID: PMC9853857 DOI: 10.1021/jacs.2c10784] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Indexed: 01/06/2023]
Abstract
Targeted protein degradation (TPD) is a new pharmacology based on small-molecule degraders that induce proximity between a protein of interest (POI) and an E3 ubiquitin ligase. Of the approximately 600 E3s encoded in the human genome, only around 2% can be co-opted with degraders. This underrepresentation is caused by a paucity of discovery approaches to identify degraders for defined E3s. This hampers a rational expansion of the druggable proteome and stymies critical advancements in the field, such as tissue- and cell-specific degradation. Here, we focus on dynamic NEDD8 conjugation, a post-translational, regulatory circuit that controls the activity of 250 cullin RING E3 ligases (CRLs). Leveraging this regulatory layer enabled us to develop a scalable assay to identify compounds that alter the interactome of an E3 of interest by tracing their abundance after pharmacologically induced auto-degradation. Initial validation studies are performed for CRBN and VHL, but proteomics studies indicate broad applicability for many CRLs. Among amenable ligases, we select CRLDCAF15 for a proof-of-concept screen, leading to the identification of a novel DCAF15-dependent molecular glue degrader inducing the degradation of RBM23 and RBM39. Together, this strategy empowers the scalable identification of degraders specific to a ligase of interest.
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Affiliation(s)
- Alexander Hanzl
- CeMM
Research Center for Molecular Medicine of the Austrian Academy of
Sciences, 1090 Vienna, Austria
| | - Eleonora Barone
- CeMM
Research Center for Molecular Medicine of the Austrian Academy of
Sciences, 1090 Vienna, Austria
| | - Sophie Bauer
- CeMM
Research Center for Molecular Medicine of the Austrian Academy of
Sciences, 1090 Vienna, Austria
| | - Hong Yue
- Department
of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States
- Department
of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Radosław P. Nowak
- Department
of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States
- Department
of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Elisa Hahn
- CeMM
Research Center for Molecular Medicine of the Austrian Academy of
Sciences, 1090 Vienna, Austria
| | - Eugenia V. Pankevich
- CeMM
Research Center for Molecular Medicine of the Austrian Academy of
Sciences, 1090 Vienna, Austria
| | - Anna Koren
- CeMM
Research Center for Molecular Medicine of the Austrian Academy of
Sciences, 1090 Vienna, Austria
| | - Stefan Kubicek
- CeMM
Research Center for Molecular Medicine of the Austrian Academy of
Sciences, 1090 Vienna, Austria
| | - Eric S. Fischer
- Department
of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States
- Department
of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Georg E. Winter
- CeMM
Research Center for Molecular Medicine of the Austrian Academy of
Sciences, 1090 Vienna, Austria
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Zhang H, Chen B, Waliullah ASM, Aramaki S, Ping Y, Takanashi Y, Zhang C, Zhai Q, Yan J, Oyama S, Kahyo T, Setou M. A New Potential Therapeutic Target for Cancer in Ubiquitin-Like Proteins-UBL3. Int J Mol Sci 2023; 24:ijms24021231. [PMID: 36674743 PMCID: PMC9863382 DOI: 10.3390/ijms24021231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/31/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Ubiquitin-like proteins (Ubls) are involved in a variety of biological processes through the modification of proteins. Dysregulation of Ubl modifications is associated with various diseases, especially cancer. Ubiquitin-like protein 3 (UBL3), a type of Ubl, was revealed to be a key factor in the process of small extracellular vesicle (sEV) protein sorting and major histocompatibility complex class II ubiquitination. A variety of sEV proteins that affects cancer properties has been found to interact with UBL3. An increasing number of studies has implied that UBL3 expression affects cancer cell growth and cancer prognosis. In this review, we provide an overview of the relationship between various Ubls and cancers. We mainly introduce UBL3 and its functions and summarize the current findings of UBL3 and examine its potential as a therapeutic target in cancers.
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Affiliation(s)
- Hengsen Zhang
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Bin Chen
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - A. S. M. Waliullah
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Shuhei Aramaki
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
- Department of Radiation Oncology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Yashuang Ping
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Yusuke Takanashi
- First Department of Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Chi Zhang
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
- Department of Systems Molecular Anatomy, Institute for Medical Photonics Research, Preeminent Medical Photonics, Education & Research Center, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Qing Zhai
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Jing Yan
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Soho Oyama
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Tomoaki Kahyo
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
- International Mass Imaging Center, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Mitsutoshi Setou
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
- Department of Systems Molecular Anatomy, Institute for Medical Photonics Research, Preeminent Medical Photonics, Education & Research Center, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
- International Mass Imaging Center, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, Shizuoka 431-3192, Japan
- Correspondence: ; Tel.: +81-053-435-2086; Fax: +81-053-435-2468
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Nguyen MT, Hoang MT, Bui HTT. Pan-Cancer Analysis of the Expression and Prognostic Value of S-Phase Kinase-Associated Protein 2. Open Access Maced J Med Sci 2023. [DOI: 10.3889/oamjms.2023.11212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND: S-Phase Kinase-Associated Protein 2 (SKP2) is essential in modulating metabolism processes, cell proliferation, and carcinogenesis DUE to its capacity to ubiquitinate and degrade various tumor-suppressive substrates. However, the actual biological and mechanism significance of SKP2 in the development of tumors and as a possible therapeutic target remains to be completely understood.
AIM: This study aimed to explore the potential roles of the SKP2 gene in the oncologic pathogenesis of various cancers through an in-depth pan-cancer analysis including gene expression assessment, survival analysis, genetic alteration, and enrichment analysis.
METHODS: Public databases including the Cancer Genome Atlas database, Genotype-Tissue Expression Project database, cBioPortal database, Gene Expression Profiling Interactive Analysis 2 database, Tumor Immune Estimation Resource version 2.0 database, and STRING database were used to detect the SKP2 expression, molecular mechanism, and its association with the prognosis across pan-cancer.
RESULTS: SKP2 was significantly highly expressed in most types of cancers and was substantially correlated to the poor survival of patients with specific cancers based on the log-rank test. SKP2 had the highest frequency of alteration in lung cancer and amplification was the most common genetic alteration type. Finally, SKP2-related genes were identified and enrichment analyses were conducted.
CONCLUSION: This study presented the first demonstration of the pan-cancer landscape of abnormal SKP2 expression, it could potentially serve as a predictive indicator and prospective therapeutic target.
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Jiang C, Dai X, He S, Zhou H, Fang L, Guo J, Liu S, Zhang T, Pan W, Yu H, Fu T, Li D, Inuzuka H, Wang P, Xiao J, Wei W. Ring domains are essential for GATOR2-dependent mTORC1 activation. Mol Cell 2023; 83:74-89.e9. [PMID: 36528027 PMCID: PMC11027793 DOI: 10.1016/j.molcel.2022.11.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/14/2022] [Accepted: 11/22/2022] [Indexed: 12/23/2022]
Abstract
The GATOR2-GATOR1 signaling axis is essential for amino-acid-dependent mTORC1 activation. However, the molecular function of the GATOR2 complex remains unknown. Here, we report that disruption of the Ring domains of Mios, WDR24, or WDR59 completely impedes amino-acid-mediated mTORC1 activation. Mechanistically, via interacting with Ring domains of WDR59 and WDR24, the Ring domain of Mios acts as a hub to maintain GATOR2 integrity, disruption of which leads to self-ubiquitination of WDR24. Physiologically, leucine stimulation dissociates Sestrin2 from the Ring domain of WDR24 and confers its availability to UBE2D3 and subsequent ubiquitination of NPRL2, contributing to GATOR2-mediated GATOR1 inactivation. As such, WDR24 ablation or Ring deletion prevents mTORC1 activation, leading to severe growth defects and embryonic lethality at E10.5 in mice. Hence, our findings demonstrate that Ring domains are essential for GATOR2 to transmit amino acid availability to mTORC1 and further reveal the essentiality of nutrient sensing during embryonic development.
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Affiliation(s)
- Cong Jiang
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Xiaoming Dai
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Shaohui He
- Joint Research Center for Musculoskeletal Tumor of Shanghai Changzheng Hospital and University of Shanghai for Science and Technology, Spinal Tumor Center, Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Shanghai 200003, China
| | - Hongfei Zhou
- Joint Research Center for Musculoskeletal Tumor of Shanghai Changzheng Hospital and University of Shanghai for Science and Technology, Spinal Tumor Center, Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Shanghai 200003, China
| | - Lan Fang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Jianping Guo
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Songlei Liu
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Tao Zhang
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Weijuan Pan
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Haihong Yu
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Tianmin Fu
- Department of Biological Chemistry and Pharmacology, The Ohio State University, Columbus, OH 43210, USA
| | - Dali Li
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Hiroyuki Inuzuka
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Ping Wang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Jianru Xiao
- Joint Research Center for Musculoskeletal Tumor of Shanghai Changzheng Hospital and University of Shanghai for Science and Technology, Spinal Tumor Center, Department of Orthopedic Oncology, Shanghai Changzheng Hospital, Shanghai 200003, China.
| | - Wenyi Wei
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA.
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Dong J, Paszkowski P, Kocincova D, Ingham RJ. Complete deletion of Ectromelia virus p28 impairs virus genome replication in a mouse strain, cell type, and multiplicity of infection-dependent manner. Virus Res 2023; 323:198968. [PMID: 36244618 PMCID: PMC10194247 DOI: 10.1016/j.virusres.2022.198968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 09/23/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
Abstract
p28 is a poxvirus-encoded E3 ubiquitin ligase that possesses an N-terminal KilA-N domain and a C-terminal RING domain. In Ectromelia virus (ECTV), disruption of the p28 RING domain severely attenuated virulence in A strain mice, which normally succumb to ECTV infection. Moreover, this mutant virus exhibited dramatically reduced genome replication and impaired factory formation in A strain mice peritoneal macrophages (PMs) infected at high multiplicity of infection (MOI) These defects were not observed in PMs isolated from C57BL/6 mice which survive ECTV infection, demonstrating that p28 functions in a context-specific manner. To further investigate p28 function, we completely deleted the p28 gene from ECTV (ECTV-Δp28). In contrast to previous findings, we found that the ECTV-Δp28 virus exhibited severely compromised virus production and genome replication in PMs isolated from A strain mice only when infected at low MOI. This defect was minimal in bone marrow-derived macrophages and two cell lines derived from A strain mice. Furthermore, this low MOI defect in virus production was also observed in PMs isolated from the susceptible BALB/c mouse strain, but not PMs isolated from C57BL/6 mice. Taken together, our data demonstrate that the requirement for ECTV p28 to establish a productive infection depends on the MOI, the cell type, as well as the mouse strain.
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Affiliation(s)
- Jianing Dong
- Department of Medical Microbiology and Immunology and Li Ka Shing Institute of Virology, Katz Group Centre for Pharmacy and Health Research, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Patrick Paszkowski
- Department of Medical Microbiology and Immunology and Li Ka Shing Institute of Virology, Katz Group Centre for Pharmacy and Health Research, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Dana Kocincova
- Department of Medical Microbiology and Immunology and Li Ka Shing Institute of Virology, Katz Group Centre for Pharmacy and Health Research, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Robert J Ingham
- Department of Medical Microbiology and Immunology and Li Ka Shing Institute of Virology, Katz Group Centre for Pharmacy and Health Research, University of Alberta, Edmonton, AB T6G 2E1, Canada.
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127
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Chen A, Ren Y, Han X, Liu C, Zhou Y, Xu C, Qi H, Ma Z, Chen Y. The COP9 signalosome complex regulates fungal development and virulence in the wheat scab fungus Fusarium graminearum. Front Microbiol 2023; 14:1179676. [PMID: 37168110 PMCID: PMC10165099 DOI: 10.3389/fmicb.2023.1179676] [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: 03/04/2023] [Accepted: 04/03/2023] [Indexed: 05/13/2023] Open
Abstract
The COP9 signalosome (Csn) complex is an evolutionarily conserved complex that regulates various important cellular processes. However, the function of the Csn complex in pathogenic fungi remains elusive. Here, the distribution of Csn subunits in the fungal kingdom was surveyed, and their biological functions were systematically characterized in the fungal pathogen Fusarium graminearum, which is among the top 10 plant fungal pathogens. The results obtained from bioinformatic analyses suggested that the F. graminearum Csn complex consisted of seven subunits (Csn1-Csn7) and that Csn5 was the most conserved subunit across the fungi kingdom. Yeast two-hybrid assays demonstrated that the seven Csn subunits formed a complex in F. graminearum. The Csn complex was localized to both the nucleus and cytoplasm and necessary for hyphal growth, asexual and sexual development and stress response. Transcriptome profiling revealed that the Csn complex regulated the transcription abundance of TRI genes necessary for mycotoxin deoxynivalenol (DON) biosynthesis, subsequently regulating DON production to control fungal virulence. Collectively, the roles of the Csn complex in F. graminearum were comprehensively analyzed, providing new insights into the functions of the Csn complex in fungal virulence and suggesting that the complex may be a potential target for combating fungal diseases.
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128
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Cen M, Ouyang W, Lin X, Du X, Hu H, Lu H, Zhang W, Xia J, Qin X, Xu F. FBXO6 regulates the antiviral immune responses via mediating alveolar macrophages survival. J Med Virol 2023; 95:e28203. [PMID: 36217277 PMCID: PMC10092588 DOI: 10.1002/jmv.28203] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/17/2022] [Accepted: 09/26/2022] [Indexed: 01/11/2023]
Abstract
Inducing early apoptosis in alveolar macrophages is one of the strategies influenza A virus (IAV) evolved to subvert host immunity. Correspondingly, the host mitochondrial protein nucleotide-binding oligomerization domain-like receptor (NLR)X1 is reported to interact with virus polymerase basic protein 1-frame 2 (PB1-F2) accessory protein to counteract virus-induced apoptosis. Herein, we report that one of the F-box proteins, FBXO6, promotes proteasomal degradation of NLRX1, and thus facilitates IAV-induced alveolar macrophages apoptosis and modulates both macrophage survival and type I interferon (IFN) signaling. We observed that FBXO6-deficient mice infected with IAV exhibited decreased pulmonary viral replication, alleviated inflammatory-associated pulmonary dysfunction, and less mortality. Analysis of the lungs of IAV-infected mice revealed markedly reduced leukocyte recruitment but enhanced production of type I IFN in Fbxo6-/- mice. Furthermore, increased type I IFN production and decreased viral replication were recapitulated in FBXO6 knockdown macrophages and associated with reduced apoptosis. Through gain- and loss-of-function studies, we found lung resident macrophages but not bone marrow-derived macrophages play a key role in the differences FBXO6 signaling pathway brings in the antiviral immune response. In further investigation, we identified that FBXO6 interacted with and promoted the proteasomal degradation of NLRX1. Together, our results demonstrate that FBXO6 negatively regulates immunity against IAV infection by enhancing the degradation of NLRX1 and thus impairs the survival of alveolar macrophages and antiviral immunity of the host.
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Affiliation(s)
- Mengyuan Cen
- Department of Infectious Diseases, The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
- Department of Respiratory MedicineNingbo First HospitalNingboChina
| | - Wei Ouyang
- Department of Infectious Diseases, The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Xiuhui Lin
- Department of Infectious Diseases, The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Xiaohong Du
- Institute of Clinical Medicine ResearchSuzhou Science and Technology Town HospitalSuzhouChina
| | - Huiqun Hu
- Department of Infectious Diseases, The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Huidan Lu
- Department of Infectious Diseases, The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Wanying Zhang
- Department of Infectious Diseases, The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Jingyan Xia
- Department of Radiation Oncology, The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Xiaofeng Qin
- Institute of Systems MedicineChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijingChina
- Suzhou Institute of Systems MedicineSuzhouChina
| | - Feng Xu
- Department of Infectious Diseases, The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina
- Research Center for Life Science and Human HealthBinjiang Institute of Zhejiang UniversityHangzhouChina
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Bouligny IM, Maher KR, Grant S. Mechanisms of myeloid leukemogenesis: Current perspectives and therapeutic objectives. Blood Rev 2023; 57:100996. [PMID: 35989139 PMCID: PMC10693933 DOI: 10.1016/j.blre.2022.100996] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 01/28/2023]
Abstract
Acute myeloid leukemia (AML) is a heterogeneous hematopoietic neoplasm which results in clonal proliferation of abnormally differentiated hematopoietic cells. In this review, mechanisms contributing to myeloid leukemogenesis are summarized, highlighting aberrations of epigenetics, transcription factors, signal transduction, cell cycling, and the bone marrow microenvironment. The mechanisms contributing to AML are detailed to spotlight recent findings that convey clinical impact. The applications of current and prospective therapeutic targets are accentuated in addition to reviews of treatment paradigms stratified for each characteristic molecular lesion - with a focus on exploring novel treatment approaches and combinations to improve outcomes in AML.
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Affiliation(s)
- Ian M Bouligny
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.
| | - Keri R Maher
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.
| | - Steven Grant
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.
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130
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Xiong M, Li C, Wang W, Yang B. Protein Structure and Modification of Aquaporins. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1398:15-38. [PMID: 36717484 DOI: 10.1007/978-981-19-7415-1_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Aquaporins (AQPs) allow water molecules and other small, neutral solutes to quickly pass through membrane. The protein structures of AQPs solved by crystallographic methods or cryo-electron microscopy technology show that AQP monomer consists of six membrane-spanning alpha-helices that form the central water-transporting pore. AQP monomers assemble to form tetramers, forming the functional units in the membrane, to transport water or other small molecules. The biological functions of AQPs are regulated by posttranslational modifications, e.g., phosphorylation, ubiquitination, glycosylation, subcellular distribution, degradation and protein interactions. Modifications of AQP combined with structural properties contribute to a better functional mechanism of AQPs. Insight into the molecular mechanisms responsible for AQP modifications as well as gating and transport properties proved to be fundamental to the development of new therapeutic targets or reliable diagnostic and prognostic biomarkers.
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Affiliation(s)
- Mengyao Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Chunling Li
- Institute of Hypertension and Kidney Research, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Weidong Wang
- Institute of Hypertension and Kidney Research, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China.
| | - Baoxue Yang
- School of Basic Medical Sciences, Peking University, Beijing, China.
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131
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Han S, Liu Y, Bao A, Zeng H, Huang G, Geng M, Zhang C, Zhang Q, Lu J, Wu M, Guo L. OsCSN1 regulates the growth of rice seedlings through the GA signaling pathway in blue light. JOURNAL OF PLANT PHYSIOLOGY 2023; 280:153904. [PMID: 36566672 DOI: 10.1016/j.jplph.2022.153904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 12/16/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
Blue light can regulate the photomorphogenesis of plants through blue light receptors to influence seedling growth and development. The COP9 signaling complex (CSN), a vital regulator of photomorphogenesis, is a highly conserved protein complex. CSN1 is the largest and most critical subunit in the CSN with a complex N-terminal function that supports most of the functions of CSN1 and is mainly involved in plant growth and development processes. The CSN is also required in the blue light-mediated photomorphogenesis response of seedlings. In this study, the OsCSN1 subunit of Oryza sativa subsp. japonica (rice) was edited and screened, and OsCSN1 deletion mutant, OsCSN1 weak expression mutant and OsCSN1 overexpression mutant were constructed. The mechanism of OsCSN1 and its N-terminal effects on rice seedling growth and development under blue light conditions were investigated. The addition of exogenous hormone gibberellin (GA3) and gibberellin synthesis inhibitor paclobutrazol (PAC) caused aboveground phenotypic and protein (such as CUL4 and SLR1) changes. Blue light regulates the degradation of SLR1 through OsCSN1, which regulates the growth and development of rice seedling height, the first incomplete leaf, and the coleoptile. It is hypothesized that rice affects CRY-COP1 interactions after sensing blue light signals through the cryptochrome, and the nuclear localization of COP1 is regulated by the CSN complex. OsCSN1 is a negative regulator in response to blue light. The core structural domain of action that inhibits the growth of the aboveground part of rice seedlings is located at the N-terminal of OsCSN1. OsCSN1 regulates the nuclear localization of COP1 through the COP9 signaling complex and degrades SLR1 through CUL4-based E3 ligase. Ultimately, it affects the synthesis of the endogenous hormone GA, thereby inhibiting the aboveground growth and development of rice seedlings.
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Affiliation(s)
- Shining Han
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, PR China
| | - Yanxi Liu
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, PR China
| | - Anar Bao
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, PR China
| | - Hua Zeng
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, PR China
| | - Guohui Huang
- School of Life Sciences, Northeast Normal University, Changchun, 130024, PR China
| | - Min Geng
- College of Food and Biotechnology, Changchun Polytechnic, Changchun, 130033, PR China
| | - Chunyu Zhang
- College of Food and Biotechnology, Changchun Polytechnic, Changchun, 130033, PR China
| | - Qi Zhang
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, PR China
| | - Jingmei Lu
- School of Life Sciences, Northeast Normal University, Changchun, 130024, PR China
| | - Ming Wu
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, PR China.
| | - Liquan Guo
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, PR China.
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132
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Wang Y, Li C, Yan S, Yu B, Gan Y, Liu R, Qiu Z, Cao B. Genome-Wide Analysis and Characterization of Eggplant F-Box Gene Superfamily: Gene Evolution and Expression Analysis under Stress. Int J Mol Sci 2022; 23:ijms232416049. [PMID: 36555688 PMCID: PMC9780924 DOI: 10.3390/ijms232416049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
F-box genes play an important role in plant growth and resistance to abiotic and biotic stresses. To date, systematic analysis of F-box genes and functional annotation in eggplant (Solanum melongena) is still limited. Here, we identified 389 F-box candidate genes in eggplant. The domain study of F-box candidate genes showed that the F-box domain is conserved, whereas the C-terminal domain is diverse. There are 376 SmFBX candidate genes distributed on 12 chromosomes. A collinearity analysis within the eggplant genome suggested that tandem duplication is the dominant form of F-box gene replication in eggplant. The collinearity analysis between eggplant and the three other species (Arabidopsis thaliana, rice and tomato) provides insight into the evolutionary characteristics of F-box candidate genes. In addition, we analyzed the expression of SmFBX candidate genes in different tissues under high temperature and bacterial wilt stress. The results identified several F-box candidate genes that potentially participate in eggplant heat tolerance and bacterial wilt resistance. Moreover, the yeast two-hybrid assay showed that several representative F-box candidate proteins interacted with representative Skp1 proteins. Overexpression of SmFBX131 and SmFBX230 in tobacco increased resistance to bacterial wilt. Overall, these results provide critical insights into the functional analysis of the F-box gene superfamily in eggplant and provide potentially valuable targets for heat and bacterial resistance.
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Affiliation(s)
- Yixi Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Vegetable Engineering and Technology Research Center, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, South China Agricultural University, Guangzhou 510642, China
| | - Chuhao Li
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
| | - Shuangshuang Yan
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Vegetable Engineering and Technology Research Center, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, South China Agricultural University, Guangzhou 510642, China
| | - Bingwei Yu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Vegetable Engineering and Technology Research Center, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, South China Agricultural University, Guangzhou 510642, China
| | - Yuwei Gan
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Vegetable Engineering and Technology Research Center, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, South China Agricultural University, Guangzhou 510642, China
| | - Renjian Liu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Vegetable Engineering and Technology Research Center, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, South China Agricultural University, Guangzhou 510642, China
| | - Zhengkun Qiu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Vegetable Engineering and Technology Research Center, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (Z.Q.); (B.C.)
| | - Bihao Cao
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Vegetable Engineering and Technology Research Center, Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (Z.Q.); (B.C.)
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Meroni A, Grosser J, Agashe S, Ramakrishnan N, Jackson J, Verma P, Baranello L, Vindigni A. NEDDylated Cullin 3 mediates the adaptive response to topoisomerase 1 inhibitors. SCIENCE ADVANCES 2022; 8:eabq0648. [PMID: 36490343 PMCID: PMC9733930 DOI: 10.1126/sciadv.abq0648] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 10/26/2022] [Indexed: 05/30/2023]
Abstract
DNA topoisomerase 1 (TOP11) inhibitors are mainstays of anticancer therapy. These drugs trap TOP1 on DNA, stabilizing the TOP1-cleavage complex (TOP1-cc). The accumulation of TOP1-ccs perturbs DNA replication fork progression, leading to DNA breaks and cell death. By analyzing the genomic occupancy and activity of TOP1, we show that cells adapt to treatment with multiple doses of TOP1 inhibitor by promoting the degradation of TOP1-ccs, allowing cells to better tolerate subsequent doses of TOP1 inhibitor. The E3-RING Cullin 3 ligase in complex with the BTBD1 and BTBD2 adaptor proteins promotes TOP1-cc ubiquitination and subsequent proteasomal degradation. NEDDylation of Cullin 3 activates this pathway, and inhibition of protein NEDDylation or depletion of Cullin 3 sensitizes cancer cells to TOP1 inhibitors. Collectively, our data uncover a previously unidentified NEDD8-Cullin 3 pathway involved in the adaptive response to TOP1 inhibitors, which can be targeted to improve the efficacy of TOP1 drugs in cancer therapy.
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Affiliation(s)
- Alice Meroni
- Division of Oncology, Department of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Jan Grosser
- Karolinska Institutet, CMB, 171 65 Solna, Sweden
| | - Sumedha Agashe
- Division of Oncology, Department of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Natasha Ramakrishnan
- Division of Oncology, Department of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Jessica Jackson
- Division of Oncology, Department of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Priyanka Verma
- Division of Oncology, Department of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
| | | | - Alessandro Vindigni
- Division of Oncology, Department of Medicine, Washington University in St. Louis, St. Louis, MO 63110, USA
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Li C, Tan Y, Ma X, Wang Z, Meng T, Sun Q. CDT1 is the major functional regulatory subunit of the pre-replication complex in zygotes. Cell Prolif 2022; 56:e13377. [PMID: 36479743 PMCID: PMC9977660 DOI: 10.1111/cpr.13377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/08/2022] [Accepted: 11/23/2022] [Indexed: 12/13/2022] Open
Abstract
Pre-replication complex (pre-RC) is critical for DNA replication initiation. CDT1 and MCM2 are the subunits of pre-RC, and proper regulation of CDT1 and MCM2 are necessary for DNA replication and cell proliferation. The present study aimed to explore the role of CDT1 and MCM2 in oocyte meiotic maturation and early embryonic development. The depletion and overexpression of Cdt1 and Mcm2 in oocyte and zygote were achieved by microinjecting specific siRNA and mRNA to explored their functions in oocyte meiotic maturation and embryonic development. Then, we examined the effect of CDT1 and MCM2 on other signal pathways by immunostaining the expression of related maker genes. We showed that neither depletion nor overexpression of Cdt1 affected oocyte meiotic progressions. The CDT1 was degraded in S phase and remained at a low level in G2 phase of zygote. Exogenous expression of Cdt1 in G2 phase led to embryo attest at zygote stage. Mechanistically, CDT1 overexpression induced DNA re-replication and thus DNA damage check-point activation. Protein abundance of MCM2 was stable throughout the cell cycle, and embryos with overexpressed MCM2 could develop to blastocysts normally. Overexpression or depletion of Mcm2 also had no effect on oocyte meiotic maturation. Our results indicate that pre-RC subunits CDT1 and MCM2 are not involved in oocyte meiotic maturation. In zygote, CDT1 but not MCM2 is the major regulator of DNA replication in a cell cycle dependent manner. Furthermore, its' degradation is essential for zygotes to prevent from DNA re-replication in G2 stage.
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Affiliation(s)
- Chao Li
- State Key Laboratory of Stem Cell and Reproductive BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina
| | - Yong‐Peng Tan
- Fertility Preservation Lab, Guangdong‐Hong Kong Metabolism & Reproduction Joint LaboratoryReproductive Medicine Center, Guangdong Second Provincial General HospitalGuangzhouChina
| | - Xue‐Shan Ma
- Reproductive Genetics DepartmentThe Affiliated Tai'an City Central Hospital of Qingdao UniversityTaianChina
| | - Zhen‐Bo Wang
- State Key Laboratory of Stem Cell and Reproductive BiologyInstitute of Zoology, Chinese Academy of SciencesBeijingChina,University of Chinese Academy of SciencesBeijingChina
| | - Tie‐Gang Meng
- Fertility Preservation Lab, Guangdong‐Hong Kong Metabolism & Reproduction Joint LaboratoryReproductive Medicine Center, Guangdong Second Provincial General HospitalGuangzhouChina
| | - Qing‐Yuan Sun
- Fertility Preservation Lab, Guangdong‐Hong Kong Metabolism & Reproduction Joint LaboratoryReproductive Medicine Center, Guangdong Second Provincial General HospitalGuangzhouChina
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Nayek U, Basheer Ahamed SI, Mansoor Hussain UH, Unnikrishnan MK, Abdul Salam AA. Computational investigations of indanedione and indanone derivatives in drug discovery: Indanone derivatives inhibits cereblon, an E3 ubiquitin ligase component. Comput Biol Chem 2022; 101:107776. [PMID: 36252444 DOI: 10.1016/j.compbiolchem.2022.107776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/30/2022] [Accepted: 10/05/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Cereblon, an extensively studied multifunctional protein, is a Cullin 4-RING E3 ubiquitin ligase complex component. Cereblon is a well-known target of thalidomide and its derivatives. Cereblon is involved in multiple myeloma cell apoptosis. When ligands such as thalidomide and lenalidomide bind to cereblon, it recognizes various neosubstrates based on the ligand shape and properties. We have identified novel CRBN inhibitors, namely DHFO and its analogs, with structural features that are slightly different from thalidomide but stronger cereblon-binding affinity. We selected indanedione and indanone derivatives from the literature to understand and compare their cereblon-mediated substrate recognition potential. METHODS Computational investigations of possible CRBN inhibitors were investigated by molecular docking with Autodock Vina and DockThor programs. The properties of the compounds' ADME/T and drug-likeness were investigated. A molecular dynamics study was carried out for four selected molecules, and the molecular interactions were analyzed using PCA-based FEL methods. The binding affinity was calculated using the MM/PBSA method. RESULTS We conducted computational investigations on 68 indanedione and indanone derivatives binding with cereblon. Ten molecules showed better CRBN binding affinity than thalidomide. We studied the drug-likeness properties of the selected ten molecules, and four of the most promising molecules (DHFO, THOH, DIMS, and DTIN) were chosen for molecular dynamics studies. The MM/PBSA calculations showed that the DHFO, already shown to be a 5-LOX/COX2 inhibitor, has the highest binding affinity of - 163.16 kJ/mol with cereblon. CONCLUSION The selected CRBN inhibitor DHFO has demonstrated the highest binding affinity with cereblon protein compared to other molecules. Thalidomide and its derivatives have a new substitute in the form of DHFO, which produces an interaction hotspot on the surface of the cereblon. Ease of chemical synthesis, low toxicity, versatile therapeutic options, and pleiotropism of DHFO analogs provide an opportunity for exploring clinical alternatives with versatile therapeutic potential for a new category of indanedione molecules as novel modulators of E3 ubiquitin ligases.
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136
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Yu Y, Yao W, Wang T, Xue W, Meng Y, Cai L, Jian W, Yu Y, Zhang C. FBXL6 depletion restrains clear cell renal cell carcinoma progression. Transl Oncol 2022; 26:101550. [PMID: 36183674 PMCID: PMC9526225 DOI: 10.1016/j.tranon.2022.101550] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND F-box proteins play important roles in cell cycle and tumorigenesis. However, its prognostic value and molecular function in clear cell renal cell carcinoma (ccRCC) remain unclear. In this study, we established a survival model to evaluate the prognosis of patients with ccRCC using the F-box gene signature and investigated the function of FBXL6 in ccRCC. METHODS Comprehensive bioinformatics analyses were used to identify differentially expressed F-box and hub genes associated with ccRCC carcinogenesis. Based on the F-box gene signature, we constructed a risk model and nomogram to predict the overall survival (OS) of patients with ccRCC and assist clinicians in decision-making. Finally, we verified the function and underlying molecular mechanisms of FBXL6 in ccRCC using CCK-8 and EdU assays, flow cytometry, and subcutaneous xenografts. RESULTS A risk model based on FBXO39, FBXL6, FBXO1, and FBXL16 was developed. In addition, we drew a nomogram based on the risk score and clinical features to assess the prognosis of patients with ccRCC. Subsequently, we identified FBXL6 as an independent prognostic marker that was highly expressed in ccRCC cell lines. In vivo and in vitro assays revealed that the depletion of FBXL6 inhibited cell proliferation and induced apoptosis. We also demonstrated that SP1 regulated the expression of FBXL6. CONCLUSIONS FBXL6 was first identified as a diagnostic and prognostic marker in patients with ccRCC. Loss of FBXL6 attenuates proliferation and induces apoptosis in ccRCC cells. SP1 was also found to regulate the expression of FBXL6.
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Affiliation(s)
- Yongchun Yu
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Wenhao Yao
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Tengda Wang
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Wei Xue
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Yuyang Meng
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Licheng Cai
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Wengang Jian
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Yipeng Yu
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Cheng Zhang
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China; School of Medicine, Zhejiang University, Hangzhou, 310058, China.
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Zhou L, Lin X, Zhang L, Chen S, Chen J, Zhou Z, Tang A, Ruan J, Wang X, Chen B. Neddylation pathway promotes myeloid-derived suppressor cell infiltration via NF-κB-mCXCL5 signaling in lung cancer. Int Immunopharmacol 2022; 113:109329. [DOI: 10.1016/j.intimp.2022.109329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/05/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022]
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138
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Siebert A, Gattringer V, Weishaupt JH, Behrends C. ALS-linked loss of Cyclin-F function affects HSP90. Life Sci Alliance 2022; 5:5/12/e202101359. [PMID: 36114006 PMCID: PMC9481933 DOI: 10.26508/lsa.202101359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 09/02/2022] [Accepted: 09/05/2022] [Indexed: 11/29/2022] Open
Abstract
Analysis of ALS patient cell lines and cyclin-F overexpression and knockout cells identified HSP90AB1 as novel SCFcyclin-F substrate pointing to a loss-of-function mechanism for ALS CCNF mutations. The founding member of the F-box protein family, Cyclin-F, serves as a substrate adaptor for the E3 ligase Skp1-Cul1-F-box (SCF)Cyclin-F which is responsible for ubiquitination of proteins involved in cell cycle progression, DNA damage and mitotic fidelity. Missense mutations in CCNF encoding for Cyclin-F are associated with amyotrophic lateral sclerosis (ALS). However, it remains elusive whether CCNF mutations affect the substrate adaptor function of Cyclin-F and whether altered SCFCyclin-F–mediated ubiquitination contributes to pathogenesis in CCNF mutation carriers. To address these questions, we set out to identify new SCFCyclin-F targets in neuronal and ALS patient–derived cells. Mass spectrometry–based ubiquitinome profiling of CCNF knockout and mutant cell lines as well as Cyclin-F proximity and interaction proteomics converged on the HSP90 chaperone machinery as new substrate candidate. Biochemical analyses provided evidence for a Cyclin-F–dependent association and ubiquitination of HSP90AB1 and implied a regulatory role that could affect the binding of a number of HSP90 clients and co-factors. Together, our results point to a possible Cyclin-F loss-of-function–mediated chaperone dysregulation that might be relevant for ALS.
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Affiliation(s)
- Alexander Siebert
- Munich Cluster for Systems Neurology (SyNergy), Medical Faculty, Ludwig-Maximilians-University München, Munich, Germany
| | - Vanessa Gattringer
- Munich Cluster for Systems Neurology (SyNergy), Medical Faculty, Ludwig-Maximilians-University München, Munich, Germany
| | - Jochen H Weishaupt
- Division of Neurodegenerative Disorders, Department of Neurology, Medical Faculty Mannheim, Mannheim Center for Translational Neurosciences, Heidelberg University, Mannheim, Germany
| | - Christian Behrends
- Munich Cluster for Systems Neurology (SyNergy), Medical Faculty, Ludwig-Maximilians-University München, Munich, Germany
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139
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Pan J, Ahmad MZ, Zhu S, Chen W, Yao J, Li Y, Fang S, Li T, Yeboah A, He L, Zhang Y. Identification, Classification and Characterization Analysis of FBXL Gene in Cotton. Genes (Basel) 2022; 13:genes13122194. [PMID: 36553463 PMCID: PMC9777894 DOI: 10.3390/genes13122194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/14/2022] [Accepted: 11/16/2022] [Indexed: 11/25/2022] Open
Abstract
F-box/LR (FBXL), Leucine-rich repeats in F-box proteins, belongs to the Skp1-Cullin1-F-box protein (SCF) E3 ligase family. FBXL genes play important roles in plant growth, such as plant hormones, responses to environmental stress, and floral organ development. Here, a total of 518 FBXL genes were identified and analyzed in six plant species. Phylogenetic analysis showed that AtFBXLs, VvFBXLs, and GrFBXLs were clustered into three subfamilies (Ⅰ-Ⅲ). Based on the composition of the F-box domain and carboxyl-terminal amino acid sequence, FBXL proteins were classified into three types (Type-A/-B/-C). Whole-genome duplication (WGD) along with tandem duplications and segmental contributed to the expansion of this gene family. The result indicates that four cotton species are also divided into three subfamilies. FBXLs in cotton were classified into three clades by phylogenetic and structural analyses. Furthermore, expression analyses indicated that the expression patterns of GhFBXLs in different cotton tissues were different. The highly expressed of GH_A07G2363 in 5-8 mm anthers, indicates that this gene might play a role in the reproductive process, providing candidate genes for future studies on cotton fertility materials. This study provides an original functional opinion and a useful interpretation of the FBXL protein family in cotton.
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Affiliation(s)
- Jingwen Pan
- College of Agronomy, Tarim University, Alar 843300, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Muhammad Zulfiqar Ahmad
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Shouhong Zhu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Wei Chen
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Jinbo Yao
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Yan Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Shengtao Fang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Tengyu Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Akwasi Yeboah
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Liangrong He
- College of Agronomy, Tarim University, Alar 843300, China
- Correspondence: (L.H.); (Y.Z.)
| | - Yongshan Zhang
- College of Agronomy, Tarim University, Alar 843300, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
- Correspondence: (L.H.); (Y.Z.)
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140
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Kumar A, Baker NE. The CRL4 E3 ligase Mahjong/DCAF1 controls cell competition through the transcription factor Xrp1, independently of polarity genes. Development 2022; 149:dev200795. [PMID: 36278853 PMCID: PMC9845748 DOI: 10.1242/dev.200795] [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: 03/28/2022] [Accepted: 10/10/2022] [Indexed: 11/17/2022]
Abstract
Cell competition, the elimination of cells surrounded by more fit neighbors, is proposed to suppress tumorigenesis. Mahjong (Mahj), a ubiquitin E3 ligase substrate receptor, has been thought to mediate competition of cells mutated for lethal giant larvae (lgl), a neoplastic tumor suppressor that defines apical-basal polarity of epithelial cells. Here, we show that Drosophila cells mutated for mahjong, but not for lgl [l(2)gl], are competed because they express the bZip-domain transcription factor Xrp1, already known to eliminate cells heterozygous for ribosomal protein gene mutations (Rp/+ cells). Xrp1 expression in mahj mutant cells results in activation of JNK signaling, autophagosome accumulation, eIF2α phosphorylation and lower translation, just as in Rp/+ cells. Cells mutated for damage DNA binding-protein 1 (ddb1; pic) or cullin 4 (cul4), which encode E3 ligase partners of Mahj, also display Xrp1-dependent phenotypes, as does knockdown of proteasome subunits. Our data suggest a new model of mahj-mediated cell competition that is independent of apical-basal polarity and couples Xrp1 to protein turnover.
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Affiliation(s)
- Amit Kumar
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Nicholas E. Baker
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
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141
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Bhattacharya A, Shukla VK, Kachariya N, Preeti, Sehrawat P, Kumar A. Disorder in the Human Skp1 Structure is the Key to its Adaptability to Bind Many Different Proteins in the SCF Complex Assembly. J Mol Biol 2022; 434:167830. [PMID: 36116539 DOI: 10.1016/j.jmb.2022.167830] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 08/20/2022] [Accepted: 09/09/2022] [Indexed: 11/30/2022]
Abstract
Skp1(S-phase kinase-associated protein 1 - Homo sapiens) is an adapter protein of the SCF(Skp1-Cullin1-Fbox) complex, which links the constant components (Cul1-RBX) and the variable receptor (F-box proteins) in Ubiquitin E3 ligase. It is intriguing how Skp1 can recognise and bind to a variety of structurally different F-box proteins. For practical reasons, previous efforts have used truncated Skp1, and thus it has not been possible to track the crucial aspects of the substrate recognition process. In this background, we report the solution structure of the full-length Skp1 protein determined by NMR spectroscopy for the first time and investigate the sequence-dependent dynamics in the protein. The solution structure reveals that Skp1 has an architecture: β1-β2-H1-H2-L1-H3-L2-H4-H5-H6-H7(partially formed) and a long tail-like disordered C-terminus. Structural analysis using DALI (Distance Matrix Alignment) reveals conserved domain structure across species for Skp1. Backbone dynamics investigated using NMR relaxation suggest substantial variation in the motional timescales along the length of the protein. The loops and the C-terminal residues are highly flexible, and the (R2/R1) data suggests μs-ms timescale motions in the helices as well. Further, the dependence of amide proton chemical shift on temperature and curved profiles of their residuals indicate that the residues undergo transitions between native state and excited state. The curved profiles for several residues across the length of the protein suggest that there are native-like low-lying excited states, particularly for several C-terminal residues. Our results provide a rationale for how the protein can adapt itself, bind, and get functionally associated with other proteins in the SCF complex by utilising its flexibility and conformational sub-states.
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Affiliation(s)
- Amrita Bhattacharya
- Lab No. 606, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Vaibhav Kumar Shukla
- Biophysical Chemistry & Structural Biology Laboratory, UM-DAE Centre for Excellence in Basic Sciences, University of Mumbai, Vidyanagari Campus, Mumbai 400098, India. https://twitter.com/bhu_vaibhav
| | - Nitin Kachariya
- Lab No. 606, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Preeti
- Lab No. 606, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Parveen Sehrawat
- Lab No. 606, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ashutosh Kumar
- Lab No. 606, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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142
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Yang X, Zhu Q. SPOP in Cancer: Phenomena, Mechanisms and Its Role in Therapeutic Implications. Genes (Basel) 2022; 13:2051. [PMID: 36360288 PMCID: PMC9690554 DOI: 10.3390/genes13112051] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/14/2022] [Accepted: 11/04/2022] [Indexed: 11/15/2023] Open
Abstract
Speckle-type POZ (pox virus and zinc finger protein) protein (SPOP) is a cullin 3-based E3 ubiquitin ligase adaptor protein that plays a crucial role in ubiquitin-mediated protein degradation. Recently, SPOP has attracted major research attention as it is frequently mutated in a range of cancers, highlighting pleiotropic tumorigenic effects and associations with treatment resistance. Structurally, SPOP contains a functionally critical N-terminal meprin and TRAF homology (MATH) domain for many SPOP substrates. SPOP has two other domains, including the internal Bric-a-brac-Tramtrack/Broad (BTB) domain, which is linked with SPOP dimerization and binding to cullin3, and a C-terminal nuclear localization sequence (NLS). The dysregulation of SPOP-mediated proteolysis is associated with the development and progression of different cancers since abnormalities in SPOP function dysregulate cellular signaling pathways by targeting oncoproteins or tumor suppressors in a tumor-specific manner. SPOP is also involved in genome stability through its role in the DNA damage response and DNA replication. More recently, studies have shown that the expression of SPOP can be modulated in various ways. In this review, we summarize the current understanding of SPOP's functions in cancer and discuss how to design a rational therapeutic target.
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Affiliation(s)
| | - Qing Zhu
- Department of Abdominal Oncology, West China Hospital of Sichuan University, Chengdu 610041, China
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143
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Lou Y, Ye M, Xu C, Tao F. Insight into the physiological and pathological roles of USP44, a potential tumor target (Review). Oncol Lett 2022; 24:455. [PMID: 36380875 PMCID: PMC9650596 DOI: 10.3892/ol.2022.13575] [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: 02/06/2022] [Accepted: 10/06/2022] [Indexed: 11/24/2022] Open
Abstract
Ubiquitin-specific peptidase 44 (USP44) is a member of the ubiquitin-specific proteases (USPs) family and its functions in various biological processes have been gradually elucidated in recent years. USP44 targets multiple downstream factors and regulates multiple mechanisms through its deubiquitination activity. Ubiquitination is, in essence, a process in which a single ubiquitin molecule or a multiubiquitin chain binds to a substrate protein to form an isopeptide bond. Deubiquitination is the catalyzing of the isopeptide bonds between ubiquitin and substrate proteins through deubiquitylating enzymes. These two processes serve an important role in the regulation of the expression, conformation, localization and function of substrate proteins by regulating their binding to ubiquitin. Based on existing research, this paper summarized the current state of knowledge about USP44. The physiological roles of USP44 in various cellular events and its pathophysiological roles in different cancer types are evaluated and the therapeutic potential of USP44 for cancer treatment is evaluated.
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Affiliation(s)
- Yuming Lou
- Department of Breast and Thyroid Surgery, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang 321000, P.R. China,Department of Stomach and Intestine Surgery, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Minfeng Ye
- Department of Stomach and Intestine Surgery, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China
| | - Chaoyang Xu
- Department of Breast and Thyroid Surgery, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang 321000, P.R. China,Department of Stomach and Intestine Surgery, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China,Correspondence to: Dr Chaoyang Xu, Department of Breast and Thyroid Surgery, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, 365 Renmin East Road, Jinhua, Zhejiang 321000, P.R. China, E-mail:
| | - Feng Tao
- Department of Stomach and Intestine Surgery, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang 312000, P.R. China,Professor Feng Tao, Department of Stomach and Intestine Surgery, Shaoxing Hospital, Zhejiang University School of Medicine, 568 Zhongxing North Road, Shaoxing, Zhejiang 312000, P.R. China, E-mail:
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144
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Lee BH, Tebaldi G, Pritchard SM, Nicola AV. Host Cell Neddylation Facilitates Alphaherpesvirus Entry in a Virus-Specific and Cell-Dependent Manner. Microbiol Spectr 2022; 10:e0311422. [PMID: 36173301 PMCID: PMC9603186 DOI: 10.1128/spectrum.03114-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/13/2022] [Indexed: 01/04/2023] Open
Abstract
Herpes simplex virus 1 (HSV-1) commandeers the host cell proteasome at several steps of its replication cycle, including entry. Here we demonstrate that HSV-2, pseudorabies virus (PRV), and bovine herpesvirus 1 (BoHV-1) entry are blocked by bortezomib, a proteasome inhibitor that is an FDA-approved cancer drug. Proteasome-dependent entry of HSV-1 is thought to be ubiquitin-independent. To interrogate further the proteasomal mechanism of entry, we determined the involvement of the ubiquitin-like molecule NEDD8 and the neddylation cascade in alphaherpesvirus entry and infection. MLN4924 is a small-molecule inhibitor of neddylation that binds directly to the NEDD8-activating enzyme. Cell treatment with MLN4924 inhibited plaque formation and infectivity by HSV-1, PRV, and BoHV-1 at noncytotoxic concentrations. Thus, the neddylation pathway is broadly important for alphaherpesvirus infection. However, the neddylation inhibitor had little effect on entry of the veterinary viruses but had a significant inhibitory effect on entry of HSV-1 and HSV-2 into seven different cell types. Washout experiments indicated that MLN4924's effect on viral entry was reversible. A time-of-addition assay suggested that the drug was acting on an early step in the entry process. Small interfering RNA (siRNA) knockdown of NEDD8 significantly inhibited HSV entry. In probing the neddylation-dependent step in entry, we found that MLN4924 dramatically blocked endocytic uptake of HSV from the plasma membrane by >90%. In contrast, the rate of HSV entry into cells that support direct fusion of HSV with the cell surface was unaffected by MLN4924. Interestingly, proteasome activity was less important for the endocytic internalization of HSV from the cell surface. The results suggest that the NEDD8 cascade is critical for the internalization step of HSV entry. IMPORTANCE Alphaherpesviruses are ubiquitous pathogens of humans and veterinary species that cause lifelong latent infections and significant morbidity and mortality. Host cell neddylation is important for cell homeostasis and for the infection of many viruses, including HSV-1, HSV-2, PRV, and BoHV-1. Inhibition of neddylation by a pharmacologic inhibitor or siRNA blocked HSV infection at the entry step. Specifically, the NEDD8 pathway was critically important for HSV-1 internalization from the cell surface by an endocytosis mechanism. The results expand our limited understanding of cellular processes that mediate HSV internalization. To our knowledge, this is the first demonstration of a function for the neddylation cascade in virus entry.
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Affiliation(s)
- Becky H. Lee
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Giulia Tebaldi
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Suzanne M. Pritchard
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Anthony V. Nicola
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
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145
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Abstract
Targeted protein degradation is an invaluable tool in studying the function of proteins. Such a tool was not available in Trypanosoma brucei, an evolutionarily divergent eukaryote that causes human African trypanosomiasis. Here, we have adapted deGradFP (degrade green fluorescent protein [GFP]), a protein degradation system based on the SCF E3 ubiquitin ligase complex and anti-GFP nanobody, in T. brucei. As a proof of principle, we targeted a kinetoplastid kinetochore protein (KKT3) that constitutively localizes at kinetochores in the nucleus. Induction of deGradFP in a cell line that had both alleles of KKT3 tagged with yellow fluorescent protein (YFP) caused a more severe growth defect than RNAi in procyclic (insect form) cells. deGradFP also worked on a cytoplasmic protein (COPII subunit, SEC31). Given the ease in making GFP fusion cell lines in T. brucei, deGradFP can serve as a powerful tool to rapidly deplete proteins of interest, especially those with low turnover rates.
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Affiliation(s)
- Midori Ishii
- Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK
| | - Bungo Akiyoshi
- Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK
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146
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Xu T, Ma Q, Li Y, Yu Q, Pan P, Zheng Y, Li Z, Xiong X, Hou T, Yu B, Liu H, Sun Y. A small molecule inhibitor of the UBE2F-CRL5 axis induces apoptosis and radiosensitization in lung cancer. Signal Transduct Target Ther 2022; 7:354. [PMID: 36253371 PMCID: PMC9576757 DOI: 10.1038/s41392-022-01182-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 08/21/2022] [Accepted: 09/06/2022] [Indexed: 11/18/2022] Open
Abstract
Protein neddylation is catalyzed by a neddylation activating enzyme (NAE, E1), an E2 conjugating enzyme, and an E3 ligase. In various types of human cancers, the neddylation pathway is abnormally activated. Our previous study validated that the neddylation E2 UBE2F is a promising therapeutic target in lung cancer. Although the NAE inhibitor MLN4924/pevonedistat is currently under clinical investigation as an anti-cancer agent, there are no small molecules available that selectively target UBE2F. Here, we report, for the first time, the discovery, via structure-based virtual screen and chemical optimization, of such a small molecule, designated as HA-9104. HA-9104 binds to UBE2F, reduces its protein levels, and consequently inhibits cullin-5 neddylation. Blockage of cullin-5 neddylation inactivates cullin-RING ligase-5 (CRL5) activity, leading to accumulation of the CRL5 substrate, NOXA, to induce apoptosis. Moreover, HA-9104 appears to form the DNA adduct via its 7-azaindole group to induce DNA damage and G2/M arrest. Biologically, HA-9104 effectively suppresses the growth and survival of lung cancer cells and confers radiosensitization in both in vitro cell culture and in vivo xenograft tumor models. In summary, we discovered a small molecule, designated HA-9104, that targets the UBE2F-CRL5 axis with anti-cancer activity alone or in combination with radiation.
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Affiliation(s)
- Tiantian Xu
- Cancer Institute, the Second Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China.,Cancer Center, Zhejiang University, Hangzhou, 310058, China.,Research Center for Life Science and Human Health, Binjiang Institute of Zhejiang University, Hangzhou, 310053, China
| | - Qisheng Ma
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Military of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Yanan Li
- Cancer Institute, the Second Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China.,Cancer Center, Zhejiang University, Hangzhou, 310058, China
| | - Qing Yu
- Cancer Institute, the Second Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China.,Cancer Center, Zhejiang University, Hangzhou, 310058, China
| | - Peichen Pan
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yawen Zheng
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, China
| | - Zhijian Li
- Cancer Institute, the Second Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China.,Cancer Center, Zhejiang University, Hangzhou, 310058, China.,Research Center for Life Science and Human Health, Binjiang Institute of Zhejiang University, Hangzhou, 310053, China
| | - Xiufang Xiong
- Cancer Institute, the Second Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China.,Cancer Center, Zhejiang University, Hangzhou, 310058, China.,Research Center for Life Science and Human Health, Binjiang Institute of Zhejiang University, Hangzhou, 310053, China
| | - Tingjun Hou
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Bin Yu
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Military of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Hongmin Liu
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Military of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Yi Sun
- Cancer Institute, the Second Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, 310029, China. .,Cancer Center, Zhejiang University, Hangzhou, 310058, China. .,Research Center for Life Science and Human Health, Binjiang Institute of Zhejiang University, Hangzhou, 310053, China.
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147
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Guo H, Yang J, Wang H, Liu X, Liu Y, Zhou K. Reshaping the tumor microenvironment: The versatility of immunomodulatory drugs in B-cell neoplasms. Front Immunol 2022; 13:1017990. [PMID: 36311747 PMCID: PMC9596992 DOI: 10.3389/fimmu.2022.1017990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/27/2022] [Indexed: 11/24/2022] Open
Abstract
Immunomodulatory drugs (IMiDs) such as thalidomide, lenalidomide and pomalidomide are antitumor compounds that have direct tumoricidal activity and indirect effects mediated by multiple types of immune cells in the tumor microenvironment (TME). IMiDs have shown remarkable therapeutic efficacy in a set of B-cell neoplasms including multiple myeloma, B-cell lymphomas and chronic lymphocytic leukemia. More recently, the advent of immunotherapy has revolutionized the treatment of these B-cell neoplasms. However, the success of immunotherapy is restrained by immunosuppressive signals and dysfunctional immune cells in the TME. Due to the pleiotropic immunobiological properties, IMiDs have shown to generate synergetic effects in preclinical models when combined with monoclonal antibodies, immune checkpoint inhibitors or CAR-T cell therapy, some of which were successfully translated to the clinic and lead to improved responses for both first-line and relapsed/refractory settings. Mechanistically, despite cereblon (CRBN), an E3 ubiquitin ligase, is considered as considered as the major molecular target responsible for the antineoplastic activities of IMiDs, the exact mechanisms of action for IMiDs-based TME re-education remain largely unknown. This review presents an overview of IMiDs in regulation of immune cell function and their utilization in potentiating efficacy of immunotherapies across multiple types of B-cell neoplasms.
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Affiliation(s)
| | | | | | | | | | - Keshu Zhou
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
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148
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Li B, Zhao R, Qiu W, Pan Z, Zhao S, Qi Y, Qiu J, Zhang S, Guo Q, Fan Y, Xu H, Li M, Li G, Xue H. The N 6-methyladenosine-mediated lncRNA WEE2-AS1 promotes glioblastoma progression by stabilizing RPN2. Am J Cancer Res 2022; 12:6363-6379. [PMID: 36168628 PMCID: PMC9475453 DOI: 10.7150/thno.74600] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 08/17/2022] [Indexed: 11/05/2022] Open
Abstract
Background: Glioblastoma (GBM) is the most common primary brain malignancy and has high aggressiveness and a poor prognosis. N6-methyladenosine (m6A) represents the most prevalent methylation modification of lncRNAs and has been shown to play important roles in the pathophysiological processes of tumors. However, the distribution and function of m6A modifications in lncRNAs in GBM tissues have not been fully revealed. Methods: The global depiction of m6A-modified lncRNA expression patterns in GBM tumor tissues was screened via m6A high-throughput sequencing. Gain- and loss-of-function assays were performed to investigate the role of WEE2-AS1 in GBM. Mass spectrometry and RNA-pulldown, RNA immunoprecipitation (RIP), luciferase reporter and coimmunoprecipitation assays were performed to explore the mechanism of m6A-mediated upregulation of WEE2-AS1 expression and the downstream mechanism promoting the malignant progression of GBM. Results: Herein, we report the differential expression profile of m6A-modified lncRNAs in human GBM tissues for the first time. WEE2-AS1 was identified as a novel m6A-modified lncRNA that promotes GBM progression and was post-transcriptionally stabilized by IGF2BP3, an m6A reader. Moreover, we confirmed that WEE2-AS1 promoted RPN2 protein stabilization by preventing CUL2-mediated RPN2 K322 ubiquitination, thereby contributing to GBM malignant progression by activating the PI3K-Akt signaling pathway. In translational medicine, we found that blocking WEE2-AS1 expression improved the therapeutic sensitivity of dasatinib, a central nervous system penetrant that is FDA-approved in GBM. Conclusions: Overall, this work highlights that WEE2-AS1 may serve as a potential prognostic biomarker and therapeutic target in GBM, the knockdown of which significantly improves the efficacy of dasatinib, providing a promising strategy for improving targeted combination therapy for GBM patients.
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Affiliation(s)
- Boyan Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Rongrong Zhao
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Wei Qiu
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Ziwen Pan
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Shulin Zhao
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Yanhua Qi
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Jiawei Qiu
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Shouji Zhang
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Qindong Guo
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Yang Fan
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Hao Xu
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Ming Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Gang Li
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
| | - Hao Xue
- Department of Neurosurgery, Qilu Hospital, Cheeloo College of Medicine and Institute of Brain and Brain-Inspired Science, Shandong University, Jinan 250012, Shandong, China.,Shandong Key Laboratory of Brain Function Remodeling, Jinan 250012, Shandong, China
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149
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Role of Neddylation in Neurodegenerative Diseases. NEUROSCI 2022. [DOI: 10.3390/neurosci3040038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Neurodegenerative diseases are characterized by progressive loss of neurons in specific regions of the brain. Neuronal death is often associated with the accumulation of misfolded proteins due to genetic mutations or abnormal protein homeostasis. An essential mechanism for regulating the clearance of misfolded proteins is neddylation, a post-translational modification closely related to ubiquitination. Neddylation is brought about by conjugating neural precursor cell-expressed developmentally downregulated protein 8 (NEDD8) to target substrates through a cascade of cellular events. Neddylation is crucial for many biological processes, and dysfunctional neddylation is implicated in several neurodegenerative diseases. This review discusses the current understanding of the role of neddylation pathways in neurodegenerative disorders and the emergence of neddylation signaling as a potential target for drug discovery and development in neurodegenerative diseases.
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150
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Teranishi H, Tabata K, Saeki M, Umemoto T, Hatta T, Otomo T, Yamamoto K, Natsume T, Yoshimori T, Hamasaki M. Identification of CUL4A-DDB1-WDFY1 as an E3 ubiquitin ligase complex involved in initiation of lysophagy. Cell Rep 2022; 40:111349. [PMID: 36103833 DOI: 10.1016/j.celrep.2022.111349] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 07/14/2022] [Accepted: 08/22/2022] [Indexed: 01/13/2023] Open
Abstract
Macroautophagy is a bulk degradation system in which double membrane-bound structures called autophagosomes to deliver cytosolic materials to lysosomes. Autophagy promotes cellular homeostasis by selectively recognizing and sequestering specific targets, such as damaged organelles, protein aggregates, and invading bacteria, termed selective autophagy. We previously reported a type of selective autophagy, lysophagy, which helps clear damaged lysosomes. Damaged lysosomes become ubiquitinated and recruit autophagic machinery. Proteomic studies using transfection reagent-coated beads and further evaluations reveal that a CUL4A-DDB1-WDFY1 E3 ubiquitin ligase complex is essential to initiate lysophagy and clear damaged lysosomes. Moreover, we show that LAMP2 is ubiquitinated by the CUL4A E3 ligase complex as a substrate on damaged lysosomes. These results reveal how cells selectively tag damaged lysosomes to initiate autophagy for the clearance of lysosomes.
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Affiliation(s)
- Hirofumi Teranishi
- JT Pharmaceutical Frontier Research Laboratory, Yokohama 236-0004, Japan
| | - Keisuke Tabata
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences Osaka University, Osaka 565-0871, Japan; Department of Genetics, Graduate School of Medicine Osaka University, Osaka 565-0871, Japan
| | - Marika Saeki
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences Osaka University, Osaka 565-0871, Japan
| | - Tetsuo Umemoto
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences Osaka University, Osaka 565-0871, Japan
| | - Tomohisa Hatta
- Molecular Profiling Research Center for Drug Discovery, AIST, Tokyo 135-0064, Japan
| | - Takanobu Otomo
- Department of Genetics, Graduate School of Medicine Osaka University, Osaka 565-0871, Japan
| | - Kentaro Yamamoto
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences Osaka University, Osaka 565-0871, Japan
| | - Toru Natsume
- Molecular Profiling Research Center for Drug Discovery, AIST, Tokyo 135-0064, Japan
| | - Tamotsu Yoshimori
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences Osaka University, Osaka 565-0871, Japan; Department of Genetics, Graduate School of Medicine Osaka University, Osaka 565-0871, Japan; Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Osaka 565-0871, Japan.
| | - Maho Hamasaki
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences Osaka University, Osaka 565-0871, Japan; Department of Genetics, Graduate School of Medicine Osaka University, Osaka 565-0871, Japan.
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