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Wu WS, Cheng CC, Lee YH, Wei JL, Chen RF, Lin CF, You RI, Chen YC, Shih HM, Hu CT, Chang HH, Lee MC, Chen YC. Preclinical trial of targeting the Hic-5-mediated pathway to prevent the progression of hepatocellular carcinoma. Am J Cancer Res 2023; 13:4903-4917. [PMID: 37970347 PMCID: PMC10636688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 09/23/2023] [Indexed: 11/17/2023] Open
Abstract
The poor prognosis of hepatocellular carcinoma (HCC) was ascribed to metastasis. Targeted therapy aiming at the molecules along the metastatic pathway is a promising therapeutic strategy. Among them, hydrogen peroxide inducible clone-5 (Hic-5) is highlighted. Hic-5, discovered as a reactive oxygen species (ROS)-inducible gene, was identified to be an adaptor protein in focal adhesion and a critical signaling mediator upregulated in various cancers including HCC. Moreover, Hic-5 may regulate epithelial-mesenchymal transition (EMT) transcription factor Snail and its downstream mesenchymal genes including fibronectin and matrix metalloproteinase-9 required for migration and invasion of HCC. However, the comprehensive Hic-5-mediated pathway was not established and whether Hic-5 can be a target for preventing HCC progression has not been validated in vivo. Using whole-transcriptome mRNA sequencing, we found reactive oxygen species modulator (ROMO) and ZNF395 were upregulated by Hic-5 in a patient-derived HCC cell line, HCC372. Whereas ROMO was involved in Hic-5-mediated ROS signaling, ZNF395 locates downstream of Snail for mesenchymal genes expression required for cell migration. Also, ZNF395 but not ROMO was upregulated by Hic-5 for migration in another patient-derived HCC cell line, HCC374. Further, by in vivo knock down of Hic-5 using the Stable Nucleic Acids Lipid nanoparticles (SNALP)-carried Hic-5 siRNA, progression of HCC372 and HCC374 in SCID mice was prevented, coupled with the decrease of the downstream mesenchymal genes. Our study provides the preclinical evidence that targeting Hic-5 is potentially able to prevent the progression of HCCs with Hic-5 overexpression.
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Affiliation(s)
- Wen-Sheng Wu
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu Chi UniversityHualien 97004, Taiwan
| | - Chuan-Chu Cheng
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
| | - Yi-Hsuan Lee
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
| | - Jia-Ling Wei
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
| | - Rui-Fang Chen
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
| | - Chen-Fang Lin
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu Chi UniversityHualien 97004, Taiwan
| | - Ren-In You
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu Chi UniversityHualien 97004, Taiwan
| | - Yen-Chang Chen
- Department of Anatomical Pathology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
- Department of Pathology, School of Medicine, Tzu Chi UniversityHualien 97004, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia SinicaTaipei 11529, Taiwan
| | - Chi-Tan Hu
- Division of Gastroenterology, Department of Medicine, Research Centre for Hepatology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
| | - Hsin-Hou Chang
- Department of Molecular Biology and Human Genetics, Tzu Chi UniversityHualien 97004, Taiwan
| | - Ming-Che Lee
- Division of General Surgery, Department of Surgery, Wan Fang Hospital, Taipei Medical UniversityTaipei 110, Taiwan
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical UniversityTaipei 110, Taiwan
| | - Yen-Cheng Chen
- Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical FoundationHualien 97004, Taiwan
- School of Medicine, Tzu Chi UniversityHualien 97004, Taiwan
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2
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Yang TT, Chiang MF, Chang CC, Yang SY, Huang SW, Liao NS, Shih HM, Hsu W, Lin KI. SENP2 restrains the generation of pathogenic Th17 cells in mouse models of colitis. Commun Biol 2023; 6:629. [PMID: 37301920 PMCID: PMC10257679 DOI: 10.1038/s42003-023-05009-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 06/02/2023] [Indexed: 06/12/2023] Open
Abstract
The molecular mechanisms contributing to the regulation of Th17-mediated inflammation remain underexplored. We here report a SUMO-specific protease (SENP)2-mediated pathway induced in pathogenic Th17 cells that restricts the pathogenesis of inflammatory colitis. SENP2 regulates the maturation of small ubiquitin-like modifiers (SUMO) and recycles SUMO from the substrate proteins. We find higher levels of SENP2 in pathogenic Th17 cells. By deleting Senp2 in T-cell lineages in mice, we demonstrate that the lack of Senp2 exacerbates the severity of experimental colitis, which is linked to elevated levels of GM-CSF+IL-17A+ pathogenic Th17 cells and more severe dysbiosis of the intestinal microbiome. Adoptive transfer experiments demonstrate the cell-autonomous effect of Senp2 in restraining Th17 differentiation and colitis. The enzymatic activity of SENP2 is important for deSUMOylation of Smad4, which reduces Smad4 nuclear entry and Rorc expression. Our findings reveal a SENP2-mediated regulatory axis in the pathogenicity of Th17 cells.
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Affiliation(s)
- Tsan-Tzu Yang
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, 10002, Taiwan
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Ming-Feng Chiang
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Che-Chang Chang
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Shii-Yi Yang
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Shih-Wen Huang
- Institute of Molecular Biology, Academia Sinica, Taipei, 11529, Taiwan
| | - Nan-Shih Liao
- Institute of Molecular Biology, Academia Sinica, Taipei, 11529, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Wei Hsu
- Forsyth Institute, Harvard School of Dental Medicine, Harvard Stem Cell Institute, Harvard University, Cambridge, MA, 02142, USA
| | - Kuo-I Lin
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, 10002, Taiwan.
- Genomics Research Center, Academia Sinica, Taipei, 11529, Taiwan.
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Yang HJ, Asakawa H, Li FA, Haraguchi T, Shih HM, Hiraoka Y. A nuclear pore complex-associated regulation of SUMOylation in meiosis. Genes Cells 2023; 28:188-201. [PMID: 36562208 DOI: 10.1111/gtc.13003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 12/02/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
The nuclear pore complex (NPC) provides a permeable barrier between the nucleoplasm and cytoplasm. In a subset of NPC constituents that regulate meiosis in the fission yeast Schizosaccharomyces pombe, we found that nucleoporin Nup132 (homolog of human Nup133) deficiency resulted in transient leakage of nuclear proteins during meiosis I, as observed in the nup132 gene-deleted mutant. The nuclear protein leakage accompanied the liberation of the small ubiquitin-like modifier (SUMO)-specific ubiquitin-like protease 1 (Ulp1) from the NPC. Ulp1 retention at the nuclear pore prevented nuclear protein leakage and restored normal meiosis in a mutant lacking Nup132. Furthermore, using mass spectrometry analysis, we identified DNA topoisomerase 2 (Top2) and RCC1-related protein (Pim1) as the target proteins for SUMOylation. SUMOylation levels of Top2 and Pim1 were altered in meiotic cells lacking Nup132. HyperSUMOylated Top2 increased the binding affinity at the centromeres of nup132 gene-deleted meiotic cells. The Top2-12KR sumoylation mutant was less localized to the centromeric regions. Our results suggest that SUMOylation of chromatin-binding proteins is regulated by the NPC-bound SUMO-specific protease and is important for the progression of meiosis.
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Affiliation(s)
- Hui-Ju Yang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Taiwan
| | - Haruhiko Asakawa
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Fu-An Li
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Tokuko Haraguchi
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yasushi Hiraoka
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
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Huang YS, Wu CC, Chang CC, Huang SF, Kuo HY, Shih HM. Reciprocal regulation of Daxx and PIK3CA promotes colorectal cancer cell growth. Cell Mol Life Sci 2022; 79:367. [PMID: 35718818 DOI: 10.1007/s00018-022-04399-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/16/2022] [Accepted: 05/23/2022] [Indexed: 02/06/2023]
Abstract
Upregulation of death-domain-associated protein (Daxx) is strongly associated with diverse cancer types. Among these, the clinicopathological significance and molecular mechanisms of Daxx overexpression in colorectal cancer (CRC) remain unknown. Here, we showed that Daxx expression was increased in both clinical CRC samples and CRC cell lines. Daxx knockdown significantly reduced proliferation activity in CRC cells and tumor growth in a xenograft model. Further studies revealed that Daxx expression could be attenuated by either treatment with the PIK3CA inhibitor PIK-75 or PIK3CA depletion in CRC cells. Conversely, expression of PIK3CA constitutively active mutants could increase Daxx expression. These data suggest that PIK3CA positively regulates Daxx expression. Consistently, the expression levels of PIK3CA and Daxx were positively correlated in sporadic CRC samples. Interestingly, Daxx knockdown or overexpression yielded decreased or increased levels of PIK3CA, respectively, in CRC cells. We further demonstrated that Daxx activates the promoter activity and expression of PIK3CA. Altogether, our results identify a mechanistic pathway of Daxx overexpression in CRC and suggest a reciprocal regulation between Daxx and PIK3CA for CRC cell growth.
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Affiliation(s)
- Yen-Sung Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan.
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan.
| | - Chang-Chieh Wu
- Department of Surgery, Tri-Service General Hospital Keelung Branch, National Defense Medical Center, Keelung, 20244, Taiwan
| | - Che-Chang Chang
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
- International Ph.D. Program for Translational Science, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, Taipei, 11031, Taiwan
- Traditional Herbal Medicine Research Center, Taipei Medical University Hospital, Taipei, 11031, Taiwan
| | - Shiu-Feng Huang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, 35053, Taiwan
| | - Hong-Yi Kuo
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, 35053, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan.
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan.
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, 35053, Taiwan.
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5
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Lee YH, Tsai YS, Chang CC, Ho CC, Shih HM, Chen HM, Lai HL, Lee CW, Lee YC, Liao YC, Yang UC, Cheng TH, Chern Y, Soong BW. A PIAS1 Protective Variant S510G Delays polyQ Disease Onset by Modifying Protein Homeostasis. Mov Disord 2021; 37:767-777. [PMID: 34951052 DOI: 10.1002/mds.28896] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/18/2021] [Accepted: 12/09/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Polyglutamine (polyQ) diseases are dominant neurodegenerative diseases caused by an expansion of the polyQ-encoding CAG repeats in the disease-causing gene. The length of the CAG repeats is the major determiner of the age at onset (AO) of polyQ diseases, including Huntington's disease (HD) and spinocerebellar ataxia type 3 (SCA3). OBJECTIVE We set out to identify common genetic variant(s) that may affect the AO of polyQ diseases. METHODS Three hundred thirty-seven patients with HD or SCA3 were enrolled for targeted sequencing of 583 genes implicated in proteinopathies. In total, 16 genes were identified as containing variants that are associated with late AO of polyQ diseases. For validation, we further investigate the variants of PIAS1 because PIAS1 is an E3 SUMO (small ubiquitin-like modifier) ligase for huntingtin (HTT), the protein linked to HD. RESULTS Biochemical analyses revealed that the ability of PIAS1S510G to interact with mutant huntingtin (mHTT) was less than that of PIAS1WT , resulting in lower SUMOylation of mHTT and lower accumulation of insoluble mHTT. Genetic knock-in of PIAS1S510G in a HD mouse model (R6/2) ameliorated several HD-like deficits (including shortened life spans, poor grip strength and motor coordination) and reduced neuronal accumulation of mHTT. CONCLUSIONS Our findings suggest that PIAS1 is a genetic modifier of polyQ diseases. The naturally occurring variant, PIAS1S510G , is associated with late AO in polyQ disease patients and milder disease severity in HD mice. Our study highlights the possibility of targeting PIAS1 or pathways governing protein homeostasis as a disease-modifying approach for treating patients with HD.
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Affiliation(s)
- Yan Hua Lee
- Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yu-Shuen Tsai
- Center for Systems and Synthetic Biology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Che-Chang Chang
- The Ph.D. Program for Translational Medicine and International Ph.D. Program for Translational Science, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Chun-Chen Ho
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Hui-Mei Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Hsing-Lin Lai
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chia-Wei Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yi-Chung Lee
- Department of Neurology, Taipei Veterans General Hospital, and Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yi-Chu Liao
- Department of Neurology, Taipei Veterans General Hospital, and Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ueng-Cheng Yang
- Center for Systems and Synthetic Biology, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Tzu-Hao Cheng
- Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan.,Institute of Biochemistry and Molecular Biology, and Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yijuang Chern
- Taiwan International Graduate Program in Molecular Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Bing-Wen Soong
- Department of Neurology, Taipei Veterans General Hospital, and Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Department of Neurology, Shuang Ho Hospital, and Taipei Neuroscience Institute, Taipei Medical University, Taipei, Taiwan
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Huang YS, Lo CH, Tsai PH, Hou YC, Chang YT, Guo CY, Hsieh HY, Lu KC, Shih HM, Wu CC. Downregulation of AANAT by c-Fos in tubular epithelial cells with membranous nephropathy. Biochem Biophys Res Commun 2021; 584:32-38. [PMID: 34763165 DOI: 10.1016/j.bbrc.2021.10.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/27/2021] [Accepted: 10/30/2021] [Indexed: 10/19/2022]
Abstract
Melatonin is a hormone majorly secreted by the pineal gland and contributes to a various type of physiological functions in mammals. The melatonin production is tightly limited to the AANAT level, yet the most known molecular mechanisms underlying AANAT gene transcription is limited in the pinealocyte. Here, we find that c-Fos and cAMP-response element-binding protein (CREB) decreases and increases the AANAT transcriptional activity in renal tubular epithelial cell, respectively. Notably, c-Fos knockdown significantly upregulates melatonin levels in renal tubular cells. Functional results indicate that AANAT expression is decreased by c-Fos and resulted in enhancement of cell damage in albumin-injury cell model. We further find an inverse correlation between c-Fos and AANAT levels in renal tubular cells from experimental membranous nephropathy (MN) samples and clinical MN specimens. Our finding provides the molecular basis of c-Fos in transcriptionally downregulating expression of AANAT and melatonin, and elucidate the protective role of AANAT in preventing renal tubular cells death in albumin-injury cell model and MN progression.
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Affiliation(s)
- Yen-Sung Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan.
| | - Chang-Han Lo
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital Penghu Branch, National Defense Medical Center, Penghu County, 88056, Taiwan; Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, 11490, Taiwan.
| | - Ping-Huang Tsai
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, 11490, Taiwan.
| | - Yi-Chou Hou
- Division of Nephrology, Department of Medicine, Cardinal-Tien Hospital, School of Medicine, Fu-Jen Catholic University, New Taipei City, 24205, Taiwan.
| | - Yu-Tien Chang
- School of Public Health, National Defense Medical Center, Taipei, 11490, Taiwan.
| | - Cheng-Yi Guo
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, 11490, Taiwan.
| | - Hsin-Yi Hsieh
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, 11490, Taiwan.
| | - Kuo-Cheng Lu
- Division of Nephrology, Department of Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, 23142, Taiwan.
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan.
| | - Chia-Chao Wu
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, 11490, Taiwan; Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, 11490, Taiwan.
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Chen IT, Chen HC, Lo YH, Lai PY, Hsieh FY, Wu YH, Shih HM, Lai MZ. Promyelocytic leukemia protein targets MK2 to promote cytotoxicity. EMBO Rep 2021; 22:e52254. [PMID: 34633746 PMCID: PMC8647022 DOI: 10.15252/embr.202052254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 09/19/2021] [Accepted: 09/27/2021] [Indexed: 11/09/2022] Open
Abstract
Promyelocytic leukemia protein (PML) is a tumor suppressor possessing multiple modes of action, including induction of apoptosis. We unexpectedly find that PML promotes necroptosis in addition to apoptosis, with Pml-/- macrophages being more resistant to TNF-mediated necroptosis than wild-type counterparts and PML-deficient mice displaying resistance to TNF-induced systemic inflammatory response syndrome. Reduced necroptosis in PML-deficient cells is associated with attenuated receptor-interacting protein kinase 1 (RIPK1) activation, as revealed by reduced RIPK1[S166] phosphorylation, and attenuated RIPK1-RIPK3-MLKL necrosome complex formation. We show that PML deficiency leads to enhanced TNF-induced MAPK-activated kinase 2 (MK2) activation and elevated RIPK1[S321] phosphorylation, which suppresses necrosome formation. MK2 inhibitor treatment or MK2 knockout abrogates resistance to cell death induction in PML-null cells and mice. PML binds MK2 and p38 MAPK, thereby inhibiting p38-MK2 interaction and MK2 activation. Moreover, PML participates in autocrine production of TNF induced by cellular inhibitors of apoptosis 1 (cIAP1)/cIAP2 degradation, since PML-knockout attenuates autocrine TNF. Thus, by targeting MK2 activation and autocrine TNF, PML promotes necroptosis and apoptosis, representing a novel tumor-suppressive activity for PML.
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Affiliation(s)
- I-Ting Chen
- Institute of Molecular Biology, Taipei, Taiwan
| | | | - Yu-Hsun Lo
- Institute of Molecular Biology, Taipei, Taiwan
| | | | - Fu-Yi Hsieh
- Institute of Molecular Biology, Taipei, Taiwan
| | | | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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He Y, Pasupala N, Zhi H, Dorjbal B, Hussain I, Shih HM, Bhattacharyya S, Biswas R, Miljkovic M, Semmes OJ, Waldmann TA, Snow AL, Giam CZ. NF-κB-induced R-loop accumulation and DNA damage select for nucleotide excision repair deficiencies in adult T cell leukemia. Proc Natl Acad Sci U S A 2021; 118:e2005568118. [PMID: 33649200 PMCID: PMC7958262 DOI: 10.1073/pnas.2005568118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Constitutive NF-κB activation (NF-κBCA) confers survival and proliferation advantages to cancer cells and frequently occurs in T/B cell malignancies including adult T cell leukemia (ATL) caused by human T-cell leukemia virus type 1 (HTLV-1). Counterintuitively, NF-κBCA by the HTLV-1 transactivator/oncoprotein Tax induces a senescence response, and HTLV-1 infections in culture mostly result in senescence or cell-cycle arrest due to NF-κBCA How NF-κBCA induces senescence, and how ATL cells maintain NF-κBCA and avert senescence, remain unclear. Here we report that NF-κBCA by Tax increases R-loop accumulation and DNA double-strand breaks, leading to senescence. R-loop reduction via RNase H1 overexpression, and short hairpin RNA silencing of two transcription-coupled nucleotide excision repair (TC-NER) endonucleases that are critical for R-loop excision-Xeroderma pigmentosum F (XPF) and XPG-attenuate Tax senescence, enabling HTLV-1-infected cells to proliferate. Our data indicate that ATL cells are often deficient in XPF, XPG, or both and are hypersensitive to ultraviolet irradiation. This TC-NER deficiency is found in all ATL types. Finally, ATL cells accumulate R-loops in abundance. Thus, TC-NER deficits are positively selected during HTLV-1 infection because they facilitate the outgrowth of infected cells initially and aid the proliferation of ATL cells with NF-κBCA later. We suggest that TC-NER deficits and excess R-loop accumulation represent specific vulnerabilities that may be targeted for ATL treatment.
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Affiliation(s)
- Yunlong He
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Nagesh Pasupala
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Huijun Zhi
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Batsuhk Dorjbal
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Imran Hussain
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County 350, Taiwan
| | - Sharmistha Bhattacharyya
- Department of Anatomy, Physiology, and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Roopa Biswas
- Department of Anatomy, Physiology, and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Milos Miljkovic
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892
| | - Oliver John Semmes
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, VA 23501
- The Leroy T. Canoles Jr. Cancer Research Center, Eastern Virginia Medical School, Norfolk, VA 23501
| | - Thomas A Waldmann
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892
| | - Andrew L Snow
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Chou-Zen Giam
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814;
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9
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Huang YS, Lu KC, Chao HW, Chen A, Chao TK, Guo CY, Hsieh HY, Shih HM, Sytwu HK, Wu CC. The MTNR1A mRNA is stabilized by the cytoplasmic hnRNPL in renal tubular cells. J Cell Physiol 2021; 236:2023-2035. [PMID: 32730662 DOI: 10.1002/jcp.29988] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 07/15/2020] [Accepted: 07/21/2020] [Indexed: 12/22/2022]
Abstract
The downregulation of melatonin receptor 1A (MTNR1A) is associated with a range of pathological conditions, including membranous nephropathy. Knowledge of the mechanism underlying MTNR1A expression has been limited to the transcriptional regulation level. Here, RNA interference screening in human kidney cells revealed that heterogeneous nuclear ribonucleoprotein L (hnRNPL) upregulated MTNR1A RNA post-transcriptionally. hnRNPL knockdown or overexpression led to increased or decreased levels of cyclic adenosine monophosphate-responsive element-binding protein phosphorylation, respectively. Molecular studies showed that cytoplasmic hnRNPL exerts a stabilizing effect on the MTNR1A transcript through CA-repeat elements in its coding region. Further studies revealed that the interaction between hnRNPL and MTNR1A serves to protect MNTR1A RNA degradation by the exosome component 10 protein. MTNR1A, but not hnRNPL, displays a diurnal rhythm in mouse kidneys. Enhanced levels of MTNR1A recorded at midnight correlated with robust binding activity between cytoplasmic hnRNPL and the MTNR1A transcript. Both hnRNPL and MTNR1A were decreased in the cytoplasm of tubular epithelial cells from experimental membranous nephropathy kidneys, supporting their clinical relevance. Collectively, our data identified cytoplasmic hnRNPL as a novel player in the upregulation of MTNR1A expression in renal tubular epithelial cells, and as a potential therapeutic target.
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MESH Headings
- Animals
- Cell Line
- Circadian Rhythm/genetics
- Cyclic AMP Response Element-Binding Protein/metabolism
- Cytoplasm/metabolism
- Epithelial Cells/metabolism
- Exoribonucleases/metabolism
- Exosome Multienzyme Ribonuclease Complex/metabolism
- Glomerulonephritis, Membranous/genetics
- Glomerulonephritis, Membranous/pathology
- Heterogeneous-Nuclear Ribonucleoprotein L/metabolism
- Humans
- Kidney Tubules/metabolism
- Kidney Tubules/pathology
- Mice, Inbred BALB C
- Models, Biological
- Open Reading Frames/genetics
- Phosphorylation
- RNA Stability/genetics
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptor, Melatonin, MT1/genetics
- Receptor, Melatonin, MT1/metabolism
- Repetitive Sequences, Nucleic Acid/genetics
- Up-Regulation/genetics
- Mice
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Affiliation(s)
- Yen-Sung Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Kuo-Cheng Lu
- Division of Nephrology, Department of Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Hsu-Wen Chao
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ann Chen
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Tai-Kuang Chao
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Cheng-Yi Guo
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hsin-Yi Hsieh
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Huey-Kang Sytwu
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Miaoli County, Taiwan
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
| | - Chia-Chao Wu
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
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10
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Hsieh YL, Su FY, Tsai LK, Huang CC, Ko YL, Su LW, Chen KY, Shih HM, Hu CM, Lee WH. NPGPx-Mediated Adaptation to Oxidative Stress Protects Motor Neurons from Degeneration in Aging by Directly Modulating O-GlcNAcase. Cell Rep 2020; 29:2134-2143.e7. [PMID: 31747588 DOI: 10.1016/j.celrep.2019.10.053] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 07/10/2019] [Accepted: 10/11/2019] [Indexed: 12/14/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS), the most common motor neuron disease, usually occurs in middle-aged people. However, the molecular basis of age-related cumulative stress in ALS pathogenesis remains elusive. Here, we found that mice deficient in NPGPx (GPx7), an oxidative stress sensor, develop ALS-like phenotypes, including paralysis, muscle denervation, and motor neurons loss. Unlike normal spinal motor neurons that exhibit elevated O-GlcNAcylation against age-dependent oxidative stress, NPGPx-deficient spinal motor neurons fail to boost O-GlcNAcylation and exacerbate ROS accumulation, leading to cell death. Mechanistically, stress-activated NPGPx inhibits O-GlcNAcase (OGA) through disulfide bonding to fine-tune global O-GlcNAcylation. Pharmacological inhibition of OGA rescues spinal motor neuron loss in aged NPGPx-deficient mice. Furthermore, expression of NPGPx in ALS patients is significantly lower than in unaffected adults. These results suggest that NPGPx modulates O-GlcNAcylation by inhibiting OGA to cope with age-dependent oxidative stress and protect motor neurons from degeneration, providing a potential therapeutic axis for ALS.
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Affiliation(s)
- Yung-Lin Hsieh
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Fang-Yi Su
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan
| | - Li-Kai Tsai
- Department of Neurology, National Taiwan University Hospital, Taipei 100, Taiwan
| | | | - Yi-Ling Ko
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Li-Wen Su
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Kai-Yun Chen
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan; Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli 350, Taiwan
| | - Chun-Mei Hu
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Wen-Hwa Lee
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA; Drug Development Center, China Medical University, Taichung 404, Taiwan.
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11
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Yang TT, Shih HM, Lin KI. SUMO-specific protease 2 restrains the differentiation of Th17 cells. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.230.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Accumulating evidence suggests that posttranslational modifications (PTMs) play a critical role in the regulation of cellular functions and disease progression. Several reports indicated that SUMOylation, a type of PTMs, contributes to diseases through modulation of cell signaling and functions. The process of SUMOylation is dynamic and can be reversibly removed by the sentrin-specific protease (SENP) family. Smad4 has been shown to suppress the differentiation of pathogenic Th17 cells and can be deSUMOylated by SENP2. Here, we would like to study whether SUMOylation may affect T cell development and differentiation, and T cell-mediated diseases.
To study the roles of Senp2 in T cell lineage, we generated Senp2f/f×Lck-cre (CKO) mice. We found that there were more Th1 and Th17 cells in CKO mice in the steady state, as compared with those in littermate controls (wild type, WT) mice. Besides, Senp2-deficiency in T cells also promotes the progression of dextran sodium sulfate (DSS)-induced colitis in mice. The levels of IFNg and IL-17 produced by in vitro differentiated Th1 and Th17 cells, respectively, were higher when Senp2 is deleted. The enzymatic activity of Senp2 is required for the inhibition of Th17 differentiation; as compared with the effects of lentiviral vector expressing wild type Senp2, transduction of differentiating CKO Th17 cells with a lentiviral vector expressing a catalytic domain mutant Senp2 failed to suppress the frequency of Th17 cells. We are examining if SUMOylation affects the function of Smad4 in Th17 cells. Results from this study may provide insights into the new therapeutic strategy for the control of Th17-mediated diseases.
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Affiliation(s)
- Tsan-Tzu Yang
- 1Graduate Institute of Immunology, National Taiwan University College of Medicine, Taiwan
| | - Hsiu-Ming Shih
- 2Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Taiwan
| | - Kuo-I Lin
- 3Genomics Research Center, Academia Sinica, Taipei, Taiwan, Taiwan
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12
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Hu LY, Chang CC, Huang YS, Chou WC, Lin YM, Ho CC, Chen WT, Shih HM, Hsiung CN, Wu PE, Shen CY. SUMOylation of XRCC1 activated by poly (ADP-ribosyl)ation regulates DNA repair. Hum Mol Genet 2019; 27:2306-2317. [PMID: 29668892 DOI: 10.1093/hmg/ddy135] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 04/09/2018] [Indexed: 11/13/2022] Open
Abstract
XRCC1 is an essential scaffold protein for base excision repair (BER) and helps to maintain genomic stability. XRCC1 has been indicated as a substrate for small ubiquitin-like modifier modification (SUMOylation); however, how XRCC1 SUMOylation is regulated in cells and how SUMOylated XRCC1 regulates BER activity are not well understood. Here, we show that SUMOylation of XRCC1 is regulated in cells under methyl-methanesulfonate (MMS) treatment and facilitates BER. Poly(ADP-ribose) polymerase 1 (PARP1) is activated by MMS immediately and synthesizes poly(ADP-ribose) (PAR), which in turn promotes recruitment of SUMO E3 TOPORS to XRCC1 and facilitates XRCC1 SUMOylation. A SUMOylation-defective mutant of XRCC1 had lower binding activity for DNA polymerase beta (POLB) and was linked to a lower capacity for repair of MMS-induced DNA damages. Our study therefore identified a pathway in which DNA damage-induced poly(ADP-ribosyl)ation (PARylation) promotes SUMOylation of XRCC1, which leads to more efficient recruitment of POLB to complete BER.
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Affiliation(s)
- Ling-Yueh Hu
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Che-Chang Chang
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
| | - Yen-Sung Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Wen-Cheng Chou
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Ying-Mei Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Chun-Chen Ho
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Wei-Ting Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan.,Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
| | - Chia-Ni Hsiung
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Pei-Ei Wu
- Taiwan Biobank, Academia Sinica, Taipei 110, Taiwan
| | - Chen-Yang Shen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan.,College of Public Health, China Medical University, Taichung 404, Taiwan
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13
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Ma HY, Lu CY, Tsao KC, Shih HM, Cheng AL, Huang LM, Chang LY. Association of EV71 3C polymorphisms with clinical severity. J Microbiol Immunol Infect 2018; 51:608-613. [PMID: 28711442 DOI: 10.1016/j.jmii.2016.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 09/29/2016] [Accepted: 12/03/2016] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Enterovirus 71 (EV71) may cause neurological and fatal cases. EV71 3C plays an important role on viral replication and possess proteolysis activity. To delineate pathogenesis of EV71 virulence, we studied EV71 3C genetics, protease activity and correlated the results with clinical severity. METHODS EV71 cases were collected; 3C of EV71 was sequenced and linked with clinical severity. 3C protease activity, viral replication rates of EV71 infectious clones with different 3C and 3C interaction with host proteins were analyzed. RESULTS The polymorphisms of EV71 3C at the 79th amino acid were associated with clinical severity. About 26% (62/234) patients infected by EV71 with wild-type 3C (T79) had neurological involvement but 78% (25/32) patients infected by EV71 with mutant 3C (T79V) did (p < 0.001). There was no significant difference of protease activity among the different 3C variants. EV71 with mutant 3C (T79V) had the highest viral replication rate and the mutant 3C (T79V) had weaker interaction with TRIM21, a component of antibody-dependent intracellular neutralization, than the other mutants (T79I and T79A). CONCLUSION We found that 3C polymorphisms were associated with clinical severity and viral replication, which might be related to 3C interaction with important host proteins such as TRIM21.
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Affiliation(s)
- Hsuan-Yin Ma
- Division of Pediatric Infectious Diseases, Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chun-Yi Lu
- Division of Pediatric Infectious Diseases, Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Kuo-Chien Tsao
- Department of Medical Biotechnology, Chang Gung University, Taoyuan, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Science, Academia Sinica, Taipei, Taiwan
| | - Ai-Ling Cheng
- Division of Pediatric Infectious Diseases, Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Li-Min Huang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Luan-Yin Chang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan.
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14
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Huang YS, Lu KC, Chao TK, Chen JS, Chen A, Guo CY, Hsieh HY, Shih HM, Sytwu HK, Wu CC. Role of melatonin receptor 1A and pituitary homeobox-1 coexpression in protecting tubular epithelial cells in membranous nephropathy. J Pineal Res 2018; 65:e12482. [PMID: 29480949 DOI: 10.1111/jpi.12482] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 02/14/2018] [Indexed: 12/21/2022]
Abstract
Membranous nephropathy (MN), a type of glomerular nephritis, is one of the most common causes of nephrotic syndrome in adults. Although it is known that melatonin plays a protective role in MN, the role of melatonin receptors in the pathophysiology of MN is unclear. Using an experimental MN model and clinical MN specimens, we studied melatonin receptor expression and found that melatonin receptor 1A (MTNR1A) expression was significantly downregulated in renal tubular epithelial cells. Molecular studies showed that the transcription factor pituitary homeobox-1 (PITX1) promoted MTNR1A expression via direct binding to its promoter. Treatment of a human tubular cell line with albumin to induce injury resulted in the stable reduction in MTNR1A and PITX1 expression. PITX1 levels were significantly downregulated in tubular epithelial cells from mice MN kidneys and MN renal specimens. Knockdown of MTNR1A, PITX1, or cyclic adenosine monophosphate-responsive element-binding protein (CREB) decreased E-cadherin (CDH1) expression, but upregulated Per2 and α-smooth muscle actin (αSMA) expression. Blockade of the MTNR1A receptor with luzindole in MN mice further impaired renal function; this was accompanied by CDH1 downregulation and Per2 and αSMA upregulation. Together, our results suggest that in injured tissue, decreased PITX1 expression at the MTNR1A promoter regions leads to decreased levels of MTNR1A in renal tubular epithelial cells, which increases the future risk of MN.
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Affiliation(s)
- Yen-Sung Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Kuo-Cheng Lu
- Division of Nephrology, Department of Medicine, Fu Jen Catholic University Hospital, New Taipei City, Taiwan
| | - Tai-Kuang Chao
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Jin-Shuen Chen
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Ann Chen
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Cheng-Yi Guo
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hsin-Yi Hsieh
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Huey-Kang Sytwu
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
| | - Chia-Chao Wu
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
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15
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Lin CY, Yang ST, Shen SC, Hsieh YC, Hsu FT, Chen CY, Chiang YH, Chuang JY, Chen KY, Hsu TI, Leong WC, Su YK, Lo WL, Yeh YS, Patria YN, Shih HM, Chang CC, Chou SY. Serum amyloid A1 in combination with integrin αVβ3 increases glioblastoma cells mobility and progression. Mol Oncol 2018; 12:756-771. [PMID: 29603594 PMCID: PMC5928363 DOI: 10.1002/1878-0261.12196] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 02/26/2018] [Accepted: 03/07/2018] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma multiforme (GBM) is a highly malignant type of brain tumor found in humans. GBM cells reproduce quickly, and the median survival time for patients after therapy is approximately 1 year with a high relapse rate. Current therapies and diagnostic tools for GBM are limited; therefore, we searched for a more favorable therapeutic target or marker protein for both therapy and diagnosis. We used mass spectrometry (MS) analysis to identify GBM-associated marker proteins from human plasma and GBM cell cultures. Additional plasma and 52 brain tissues obtained from patients with gliomas were used to validate the association rate of serum amyloid A1 (SAA1) in different grades of gliomas and its distribution in tumors. Microarray database analysis further validated the coefficient of SAA1 levels in gliomas. The cellular mechanisms of SAA1 in GBM proliferation and infiltration were investigated in vitro. We analyzed the correlation between SAA1 and patients' medication requirement to demonstrate the clinical effects of SAA1 in GBM. SAA1 was identified from MS analysis, and its level was revealed to be correlated with the disease grade, clinical severity, and survival rate of patients with gliomas. In vitro cultures, including GBM cells and normal astrocytes, revealed that SAA1 promotes cell migration and invasion through integrin αVβ3 to activate the Erk signaling pathway. Magnetic resonance imaging and tumor region-specific microarray analysis identified a correlation between SAA1 and GBM cell infiltration in patients. In summary, our results demonstrate that SAA1 in combination with integrin αV and β3 can serve as an indicator of high glioblastoma risk. We also identified the cellular mechanisms of SAA1 contributing to GBM progression, which can serve as the basis for future GBM therapy.
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Affiliation(s)
- Ching-Yu Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Shun-Tai Yang
- Division of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, Taiwan.,Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taiwan.,Comprehensive Cancer Center of Taipei Medical University, Taiwan
| | - Shing-Chuan Shen
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taiwan
| | - Yi-Chen Hsieh
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,The PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Fei-Ting Hsu
- Department of Medical Imaging, Taipei Medical University Hospital, Taiwan.,Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taiwan.,Research Center of Translational Imaging (TIRC), College of Medicine, Taipei Medical University, Taiwan
| | - Cheng-Yu Chen
- Department of Medical Imaging, Taipei Medical University Hospital, Taiwan.,Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taiwan.,Research Center of Translational Imaging (TIRC), College of Medicine, Taipei Medical University, Taiwan
| | - Yung-Hsiao Chiang
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taiwan.,Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,The PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,Division of Neurosurgery, Department of Surgery, Taipei Medical University Hospital, Taiwan
| | - Jian-Ying Chuang
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,The PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Kai-Yun Chen
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,The PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Tsung-I Hsu
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,The PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Wan-Chong Leong
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,The PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Yu-Kai Su
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taiwan
| | - Wei-Lun Lo
- Division of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, Taiwan.,Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,The PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Yi-Shian Yeh
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taiwan
| | - Yudha Nur Patria
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Hsiu-Ming Shih
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Che-Chang Chang
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,Neuroscience Research Center, Taipei Medical University Hospital, Taiwan
| | - Szu-Yi Chou
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan.,The PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taiwan
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16
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Naik MT, Kang M, Ho CC, Liao PH, Hsieh YL, Naik NM, Wang SH, Chang I, Shih HM, Huang TH. Author Correction: Molecular mechanism of K65 acetylation-induced attenuation of Ubc9 and the NDSM interaction. Sci Rep 2018; 8:5022. [PMID: 29555948 PMCID: PMC5859160 DOI: 10.1038/s41598-018-23157-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Mandar T Naik
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan.,Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, Rhode Island, 02903, USA
| | - Mooseok Kang
- Department of Physics, Pusan National University, Busan, 46241, Korea
| | - Chun-Chen Ho
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Pei-Hsin Liao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Yung-Lin Hsieh
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Nandita M Naik
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Szu-Huan Wang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Iksoo Chang
- Center for Proteome Biophysics, Department of Brain and Cognitive Sciences, DGIST, Daegu, 42988, Korea.
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan. .,Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, 35053, Taiwan.
| | - Tai-Huang Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan.
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17
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Huang YS, Chang CC, Lee SS, Jou YS, Shih HM. Xist reduction in breast cancer upregulates AKT phosphorylation via HDAC3-mediated repression of PHLPP1 expression. Oncotarget 2017; 7:43256-43266. [PMID: 27248326 PMCID: PMC5190021 DOI: 10.18632/oncotarget.9673] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 05/12/2016] [Indexed: 11/30/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) dysregulated in cancer potentially play oncogenic or tumor-suppressive roles. While the X inactivate-specific transcript (Xist) lncRNA is important for X-chromosome inactivation in female cells, very little is known about the role of Xist in human breast cancer in modulating cellular pathway(s). Here, we show that Xist expression is significantly reduced in breast tumor samples and cancer cell lines. Xist knockdown or overexpression resulted in increased or decreased levels, respectively, of AKT phosphorylation and cell viability. Further studies revealed an inverse correlation between Xist and phospho-AKT levels in breast cancer samples. Additionally, Xist knockdown-elicited increase of cell viability was attenuated by AKT inhibitor. These results suggest that Xist negatively regulates cell viability via inhibition of AKT activation. Interestingly, decreased Xist expression in breast cancer samples was associated with reduced levels of Jpx RNA, an lncRNA that positively regulates Xist promoter activity. Accordingly, Jpx knockdown enhanced AKT activation and cell viability. We also demonstrate that knockdown of Xist or SPEN, an intermediator protein to link Xist, SMRT co-repressor and HDAC3 complexes for X-chromosome inactivation, decreased expression of PHLPP1, a phosphatase to remove AKT phosphorylation, via increased HDAC3 recruitment to the PHLPP1 promoter, correlating with increased AKT phosphorylation. Our findings elucidate the tumor suppressor role of Xist in breast cancer and provide the molecular basis of Xist in downregulating AKT activation.
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Affiliation(s)
- Yen-Sung Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Che-Chang Chang
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Szu-Shuo Lee
- Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei, Taiwan
| | - Yuh-Shan Jou
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.,Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.,Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei, Taiwan
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18
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Naik MT, Kang M, Ho CC, Liao PH, Hsieh YL, Naik NM, Wang SH, Chang I, Shih HM, Huang TH. Molecular mechanism of K65 acetylation-induced attenuation of Ubc9 and the NDSM interaction. Sci Rep 2017; 7:17391. [PMID: 29234076 PMCID: PMC5727262 DOI: 10.1038/s41598-017-17465-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 11/27/2017] [Indexed: 11/09/2022] Open
Abstract
The negatively charged amino acid-dependent sumoylation motif (NDSM) carries an additional stretch of acidic residues downstream of the consensus Ψ-K-x-E/D sumoylation motif. We have previously shown that acetylation of the SUMO E2 conjugase enzyme, Ubc9, at K65 downregulates its binding to the NDSM and renders a selective decrease in sumoylation of substrates with the NDSM motif. Here, we provide detailed structural, thermodynamic, and kinetics results of the interactions between Ubc9 and its K65 acetylated variant (Ac-Ubc9K65) with three NDSMs derived from Elk1, CBP, and Calpain2 to rationalize the mechanism beneath this reduced binding. Our nuclear magnetic resonance (NMR) data rule out a direct interaction between the NDSM and the K65 residue of Ubc9. Similarly, we found that NDSM binding was entropy-driven and unlikely to be affected by the negative charge by K65 acetylation. Moreover our NMR, mutagenesis and molecular dynamics simulation studies defined the sequence of the NDSM as Ψ-K-x-E/D-x1-x2-(x3/E/D)-(x4/E/D)-xn and determined that K74 and K76 were critical Ubc9 residues interacting with the negatively charged residues of the NDSM.
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Affiliation(s)
- Mandar T Naik
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan.,Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, Rhode Island, 02903, USA
| | - Mooseok Kang
- Department of Physics, Pusan National University, Busan, 46241, Korea
| | - Chun-Chen Ho
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Pei-Hsin Liao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Yung-Lin Hsieh
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Nandita M Naik
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Szu-Huan Wang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Iksoo Chang
- Center for Proteome Biophysics, Department of Brain and Cognitive Sciences, DGIST, Daegu, 42988, Korea.
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan. .,Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, 35053, Taiwan.
| | - Tai-Huang Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan.
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19
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Cheng CW, Chang CC, Patria YN, Chang RT, Liu YR, Li FA, Shih HM, Lin CY. Sex hormone-binding globulin (SHBG) is a potential early diagnostic biomarker for gastric cancer. Cancer Med 2017; 7:64-74. [PMID: 29148252 PMCID: PMC5773940 DOI: 10.1002/cam4.1254] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/15/2017] [Accepted: 10/13/2017] [Indexed: 12/11/2022] Open
Abstract
The use of blood plasma biomarkers in gastric cancer (GC) management is limited due to a lack of reliable biomarkers. An LC‐MS/MS assay and a bioinformatic analysis were performed to identify blood plasma biomarkers in a GC discovery cohort. The data obtained were verified and validated by western blotting and an ELISA in an independent study cohort. A label‐free quantification analysis of the MS data using PEAKS7 software found that four plasma proteins of apolipoprotein C‐1, gelsolin, sex hormone‐binding globulin (SHBG), and complement component C4‐A were significantly overexpressed in GC patients. A western blot assay of these plasma proteins showed that only SHBG was consistently overexpressed in the patient group. ELISA measurement of SHBG blood plasma levels confirmed that the patient group had significantly higher SHBG levels than the control group. SHBG levels in the patient group remained significantly higher after being stratified by gender, age, and disease stage. These findings show that LC‐MS/MS is powerful and highly sensitive for plasma biomarker discovery, and SHBG could be a potential plasma biomarker for GC management.
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Affiliation(s)
- Chao-Wen Cheng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Che-Chang Chang
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan.,Ph.D Program in Biotechnology Research and Development, College of Pharmacy, Taipei Medical University, Taipei, 11031, Taiwan.,Traditional Herbal Medicine Research Center of Taipei Medical University Hospital, Taipei, 11031, Taiwan
| | - Yudha Nur Patria
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.,Department of Pediatrics, Faculty of Medicine, Universitas Gadjah Mada/Sardjito Hospital, Yogyakarta, 55281, Indonesia
| | - Ruei-Ting Chang
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Yun-Ru Liu
- Joint Biobank, Office of Human Research, Taipei Medical University, Taipei, 11031, Taiwan
| | - Fu-An Li
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Hsiu-Ming Shih
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Ching-Yu Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
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20
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Abstract
Both RNF4 and KAP1 play critical roles in the response to DNA double-strand breaks (DSBs), but the functional interplay of RNF4 and KAP1 in regulating DNA damage response remains unclear. We have previously demonstrated the recruitment and degradation of KAP1 by RNF4 require the phosphorylation of Ser824 (pS824) and SUMOylation of KAP1. In this report, we show the retention of DSB-induced pS824-KAP1 foci and RNF4 abundance are inversely correlated as cell cycle progresses. Following irradiation, pS824-KAP1 foci predominantly appear in the cyclin A (-) cells, whereas RNF4 level is suppressed in the G0-/G1-phases and then accumulates during S-/G2-phases. Notably, 53BP1 foci, but not BRCA1 foci, co-exist with pS824-KAP1 foci. Depletion of KAP1 yields opposite effect on the dynamics of 53BP1 and BRCA1 loading, favoring homologous recombination repair. In addition, we identify p97 is present in the RNF4-KAP1 interacting complex and the inhibition of p97 renders MCF7 breast cancer cells relatively more sensitive to DNA damage. Collectively, these findings suggest that combined effect of dynamic recruitment of RNF4 to KAP1 regulates the relative occupancy of 53BP1 and BRCA1 at DSB sites to direct DSB repair in a cell cycle-dependent manner.
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Affiliation(s)
- Ching-Ying Kuo
- a Department of Molecular Pharmacology , Beckman Research Institute, City of Hope , Duarte , CA , USA.,b Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute , City of Hope, Duarte , CA , USA
| | - Xu Li
- a Department of Molecular Pharmacology , Beckman Research Institute, City of Hope , Duarte , CA , USA
| | - Jeremy M Stark
- b Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute , City of Hope, Duarte , CA , USA.,c Department of Radiation Biology , Beckman Research Institute , City of Hope, Duarte , CA , USA
| | - Hsiu-Ming Shih
- d Institute of Biomedical Sciences, Academia Sinica , Taipei , Taiwan , Republic of China
| | - David K Ann
- a Department of Molecular Pharmacology , Beckman Research Institute, City of Hope , Duarte , CA , USA.,b Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute , City of Hope, Duarte , CA , USA
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21
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Ho YKA, Zhi H, Bowlin T, Dorjbal B, Philip S, Zahoor MA, Shih HM, Schaefer B, Glover JNM, Giam CZ. HTLV-1 tax hijacks cellular ubiquitination machinery to assemble K63-linked polyubiquitin for canonical NF-κB activation. Retrovirology 2015. [PMCID: PMC4577786 DOI: 10.1186/1742-4690-12-s1-o34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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22
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Kuo HY, Huang YS, Tseng CH, Chen YC, Chang YW, Shih HM, Wu CW. PML represses lung cancer metastasis by suppressing the nuclear EGFR-mediated transcriptional activation of MMP2. Cell Cycle 2015; 13:3132-42. [PMID: 25486572 DOI: 10.4161/15384101.2014.949212] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Promyelocytic leukemia protein (PML) is emerging as an important tumor suppressor. Its expression is lost during the progression of several types of cancer, including lung cancer. The EGF receptor (EGFR), a membrane-bound receptor tyrosine kinase, transduces intracellular signals responsible for cell proliferation, differentiation and migration. EGFR activity is frequently abnormally upregulated in lung adenocarcinoma (LAC) and thus is considered to be a driving oncogene for LAC. EGFR translocates into the nucleus and transcriptionally activates genes, such as CCND1, that promote cell growth. Recently, we demonstrated that PML interacted with nuclear EGFR (nEGFR) and suppressed the nEGFR-mediated transcriptional activation of CCND1 in lung cancer cells, thereby restraining cell growth. When we further investigated the interplay between PML and EGFR in lung cancer metastasis, we found that the matrix metalloprotease-2 gene (MMP2) was a novel nEGFR target gene and was repressed by PML. We provide evidence that nEGFR bound to the AT-rich sequence (ATRS) in the MMP2 promoter and enhanced its transcriptional activity. In addition, we demonstrated that PML repressed nEGFR-induced MMP2 transcription and reduced cell invasion. PML was recruited by nEGFR to the MMP2 promoter where it reduced histone acetylation, leading to the transcriptional repression of MMP2. Finally, we demonstrated that PML upregulation by interferon-β (IFNβ) in lung cancer cells decreased MMP2 expression and cell invasion. Together, our results suggested that IFNβ induced PML to inhibit lung cancer metastasis by repressing the nEGFR-mediated transcriptional activation of MMP2.
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Affiliation(s)
- Hong-Yi Kuo
- a Institute of Biochemistry and Molecular Biology ; National Yang Ming University ; Taipei , Taiwan
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23
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Ho YK, Zhi H, Bowlin T, Dorjbal B, Philip S, Zahoor MA, Shih HM, Semmes OJ, Schaefer B, Glover JNM, Giam CZ. HTLV-1 Tax Stimulates Ubiquitin E3 Ligase, Ring Finger Protein 8, to Assemble Lysine 63-Linked Polyubiquitin Chains for TAK1 and IKK Activation. PLoS Pathog 2015; 11:e1005102. [PMID: 26285145 PMCID: PMC4540474 DOI: 10.1371/journal.ppat.1005102] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 07/21/2015] [Indexed: 11/29/2022] Open
Abstract
Human T lymphotropic virus type 1 (HTLV-1) trans-activator/oncoprotein, Tax, impacts a multitude of cellular processes, including I-κB kinase (IKK)/NF-κB signaling, DNA damage repair, and mitosis. These activities of Tax have been implicated in the development of adult T-cell leukemia (ATL) in HTLV-1-infected individuals, but the underlying mechanisms remain obscure. IKK and its upstream kinase, TGFβ-activated kinase 1 (TAK1), contain ubiquitin-binding subunits, NEMO and TAB2/3 respectively, which interact with K63-linked polyubiquitin (K63-pUb) chains. Recruitment to K63-pUb allows cross auto-phosphorylation and activation of TAK1 to occur, followed by TAK1-catalyzed IKK phosphorylation and activation. Using cytosolic extracts of HeLa and Jurkat T cells supplemented with purified proteins we have identified ubiquitin E3 ligase, ring finger protein 8 (RNF8), and E2 conjugating enzymes, Ubc13:Uev1A and Ubc13:Uev2, to be the cellular factors utilized by Tax for TAK1 and IKK activation. In vitro, the combination of Tax and RNF8 greatly stimulated TAK1, IKK, IκBα and JNK phosphorylation. In vivo, RNF8 over-expression augmented while RNF8 ablation drastically reduced canonical NF-κB activation by Tax. Activation of the non-canonical NF-κB pathway by Tax, however, is unaffected by the loss of RNF8. Using purified components, we further demonstrated biochemically that Tax greatly stimulated RNF8 and Ubc13:Uev1A/Uev2 to assemble long K63-pUb chains. Finally, co-transfection of Tax with increasing amounts of RNF8 greatly induced K63-pUb assembly in a dose-dependent manner. Thus, Tax targets RNF8 and Ubc13:Uev1A/Uev2 to promote the assembly of K63-pUb chains, which signal the activation of TAK1 and multiple downstream kinases including IKK and JNK. Because of the roles RNF8 and K63-pUb chains play in DNA damage repair and cytokinesis, this mechanism may also explain the genomic instability of HTLV-1-transformed T cells and ATL cells. Activation of the NF-κB family of transcription factors by the HTLV-1 oncoprotein, Tax, is causally linked to adult T cell leukemia (ATL) development in HTLV-1-infected individuals, but the underlying mechanisms are not fully understood. NF-κB activation requires the phosphorylation of its inhibitor, IκBα, by IκB kinase (IKK), which marks IκBα for degradation. In this study, we demonstrate that Tax inappropriately activates a ubiquitin E3 ligase, RNF8, and ubiquitin E2 conjugating enzymes, Ubc13:Uev1A/Uev2, to assemble long lysine 63-linked polyubiquitin (K63-pUb) chains, which function as signaling platforms for polyubiquitin-binding TGFβ-activated kinase 1 (TAK1) and IKK to congregate and become activated. Because TAK1 mediates the activation of multiple downstream signaling pathways, the mechanism described here can explain the complex effect of Tax on cell signaling. The major functions of RNF8 are to signal cellular DNA damage repair (DDR) and cell division by assembling K63-pUb chains at the site of DNA damage and cell cleavage. As such, the inappropriate activation of RNF8 and the over-abundance of K63-pUb chains in Tax-expressing cells may explain how Tax causes DNA damage and cell division defect.
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Affiliation(s)
- Yik-Khuan Ho
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - Huijun Zhi
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - Tara Bowlin
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - Batsukh Dorjbal
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - Subha Philip
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - Muhammad Atif Zahoor
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Oliver John Semmes
- Department of Microbiology and Molecular Cell Biology, The Leroy T. Canoles Jr. Cancer Research Center, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Brian Schaefer
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - J. N. Mark Glover
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Chou-Zen Giam
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
- * E-mail:
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24
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Lin GJ, Huang YS, Lin CK, Huang SH, Shih HM, Sytwu HK, Chen YW. Daxx and TCF4 interaction links to oral squamous cell carcinoma growth by promoting cell cycle progression via induction of cyclin D1 expression. Clin Oral Investig 2015. [PMID: 26205068 PMCID: PMC4799237 DOI: 10.1007/s00784-015-1536-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Objectives Death domain-associated protein (Daxx) has been recently implicated as a positive factor in ovarian cancer and prostate cancer, but the role of Daxx in oral squamous cell carcinoma (OSCC) has never been addressed. Herein, we investigate the expression and function of Daxx in OSCC. Materials and methods RT-quantitative PCR, Western blotting, and immunohistochemistry were used to evaluation of the expression of Daxx in human OSCC cell lines and clinical surgical specimens. Short hairpin RNA targeting Daxx was transduced by lentivirus infection to knockdown the expression of Daxx in SAS and SCC25 cell lines, and the influence of this knockdown was evaluated by analyzing the growth and the cell cycle in transduced cells. Immunoprecipitation and sequential chromatin immunoprecipitation-quantitative PCR were used to analyze the associations between Daxx, TCF4, and cyclin D1 promoter. Xenograft tumor model was used to evaluate the in vivo tumorigenicity of Daxx in OSCC. Results Daxx mRNA and protein expression are elevated in several OSCC cell lines and human OSCC samples in comparison to those in normal tissue. We further find that depletion of Daxx decreases OSCC cell growth activity through G1 cell cycle arrest. Daxx silencing reduces cyclin D1 expression via a Daxx-TCF4 interaction, whereas the Daxx depletion-mediated G1 arrest can be relieved by ectopic expression of cyclin D1. Moreover, we show that in OSCC clinical samples, the expression of Daxx is significantly correlated with that of cyclin D1. Conclusion Our data demonstrate the importance of Daxx in regulation of cyclin D1 expression and provide the first evidence that Daxx exhibits tumor-promoting activity in OSCC. Clinical relevance Daxx plays an important role in malignant transformation of OSCC and may serves as a target for cancer prevention and treatment.
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Affiliation(s)
- Gu-Jiun Lin
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Yen-Sung Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chih-Kung Lin
- Department of Pathology, Taipei Tzu Chi general Hospital, New Taipei City, Taiwan
| | - Shing-Hwa Huang
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan.,Department of General Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Huey-Kang Sytwu
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan
| | - Yuan-Wu Chen
- Department of Oral and Maxillofacial Surgery, Tri-Service General Hospital, Taipei, Taiwan. .,School of Dentistry, National Defense Medical Center, 325 Cheng-Kung Road, Section 2, Nei-Hu, Taipei, 11490, Taiwan.
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25
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Huang SY, Chang CF, Fang PJ, Naik MT, Güntert P, Shih HM, Huang TH. The RING domain of human promyelocytic leukemia protein (PML). J Biomol NMR 2015; 61:173-180. [PMID: 25627356 DOI: 10.1007/s10858-015-9901-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 01/19/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Shu-Yu Huang
- Institute of Biomedical Sciences, Academia Sinica, Nankang, Taipei, 11529, Taiwan, ROC
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26
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Huang SY, Naik MT, Chang CF, Fang PJ, Wang YH, Shih HM, Huang TH. The B-box 1 dimer of human promyelocytic leukemia protein. J Biomol NMR 2014; 60:275-281. [PMID: 25355412 DOI: 10.1007/s10858-014-9869-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 10/20/2014] [Indexed: 06/04/2023]
Affiliation(s)
- Shu-Yu Huang
- Institute of Biomedical Sciences, Academia Sinica, Nankang, Taipei, 11529, Taiwan, ROC
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27
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Chiang YP, Sheng WH, Shao PL, Chi YH, Chen YMA, Huang SW, Shih HM, Chang LY, Lu CY, Chang SC, Hung CC, Huang LM. Large Isoform of Mammalian Relative of DnaJ is a Major Determinant of Human Susceptibility to HIV-1 Infection. EBioMedicine 2014; 1:126-32. [PMID: 26137520 PMCID: PMC4457413 DOI: 10.1016/j.ebiom.2014.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/06/2014] [Accepted: 10/06/2014] [Indexed: 12/14/2022] Open
Abstract
Individual differences in susceptibility to human immunodeficiency virus type 1 (HIV-1) infection have been of interest for decades. We aimed to determine the contribution of large isoform of Mammalian DnaJ (MRJ-L), a HIV-1 Vpr-interacting cellular protein, to this natural variation. Expression of MRJ-L in monocyte-derived macrophages was significantly higher in HIV-infected individuals (n = 31) than their uninfected counterparts (n = 27) (p = 0.009). Fifty male homosexual subjects (20 of them are HIV-1 positive) were further recruited to examine the association between MRJ-L levels and occurrence of HIV infection. Bayesian multiple logistic regression revealed that playing a receptive role and increased levels of MRJ-L in macrophages were two risk factors for HIV-1 infection. A 1% rise in MRJ-L expression was associated with a 1.13 fold (95% CrI 1.06–1.29) increase in odds of contracting HIV-1 infection. Ex vivo experiments revealed that MRJ-L facilitated Vpr-dependent nuclear localization of virus. Infection of macrophage-tropic strain is a critical step in HIV-1 transmission. MRJ-L is a critical factor in this process; hence, subjects with higher macrophage MRJ-L levels are more vulnerable to HIV-1 infection. Our results suggest that individuals with high levels of MRJ-L may be more susceptible to HIV-1 infection than individuals with low levels of MRJ-L. We demonstrated that MRJ-L interacts with HIV-1 Vpr and assists with HIV-1 replication. A rise in MRJ-L levels effectively increases the replication of HIV-1 and a reduction in MRJ-L expression significantly decreases HIV-1 production. Strategies to lower MRJ-L levels in macrophages may be beneficial in controlling HIV-1 infection.
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Affiliation(s)
- Yu-Ping Chiang
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Wang-Huei Sheng
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Pei-Lan Shao
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Ya-Hui Chi
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan 350, Taiwan
| | - Yi-Ming Arthur Chen
- Center for Infectious Diseases and Cancer Research (CICAR), Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Szu-Wei Huang
- Center for Infectious Diseases and Cancer Research (CICAR), Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Luan-Yin Chang
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Chun-Yi Lu
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Shan-Chwen Chang
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Chien-Ching Hung
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Li-Min Huang
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
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28
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Kuo CY, Li X, Kong XQ, Luo C, Chang CC, Chung Y, Shih HM, Li KK, Ann DK. An arginine-rich motif of ring finger protein 4 (RNF4) oversees the recruitment and degradation of the phosphorylated and SUMOylated Krüppel-associated box domain-associated protein 1 (KAP1)/TRIM28 protein during genotoxic stress. J Biol Chem 2014; 289:20757-72. [PMID: 24907272 DOI: 10.1074/jbc.m114.555672] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Krüppel-associated box domain-associated protein 1 (KAP1) is a universal transcriptional corepressor that undergoes multiple posttranslational modifications (PTMs), including SUMOylation and Ser-824 phosphorylation. However, the functional interplay of KAP1 PTMs in regulating KAP1 turnover during DNA damage response remains unclear. To decipher the role and cross-talk of multiple KAP1 PTMs, we show here that DNA double strand break-induced KAP1 Ser-824 phosphorylation promoted the recruitment of small ubiquitin-like modifier (SUMO)-targeted ubiquitin E3 ligase, ring finger protein 4 (RNF4), and subsequent RNF4-mediated, SUMO-dependent degradation. Besides the SUMO interacting motif (SIM), a previously unrecognized, but evolutionarily conserved, arginine-rich motif (ARM) in RNF4 acts as a novel recognition motif for selective target recruitment. Results from combined mutagenesis and computational modeling studies suggest that RNF4 utilizes concerted bimodular recognition, namely SIM for Lys-676 SUMOylation and ARM for Ser(P)-824 of simultaneously phosphorylated and SUMOylated KAP1 (Ser(P)-824-SUMO-KAP1). Furthermore, we proved that arginines 73 and 74 within the ARM of RNF4 are required for efficient recruitment to KAP1 or accelerated degradation of promyelocytic leukemia protein (PML) under stress. In parallel, results of bimolecular fluorescence complementation assays validated the role of the ARM in recognizing Ser(P)-824 in living cells. Taken together, we establish that the ARM is required for RNF4 to efficiently target Ser(P)-824-SUMO-KAP1, conferring ubiquitin Lys-48-mediated proteasomal degradation in the context of double strand breaks. The conservation of such a motif may possibly explain the requirement for timely substrate selectivity determination among a myriad of SUMOylated proteins under stress conditions. Thus, the ARM dynamically regulates the SIM-dependent recruitment of targets to RNF4, which could be critical to dynamically fine-tune the abundance of Ser(P)-824-SUMO-KAP1 and, potentially, other SUMOylated proteins during DNA damage response.
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Affiliation(s)
- Ching-Ying Kuo
- From the Department of Molecular Pharmacology and Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope, Duarte, California 91010
| | - Xu Li
- From the Department of Molecular Pharmacology and
| | - Xiang-Qian Kong
- the Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Cheng Luo
- the Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Che-Chang Chang
- the Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan, and
| | - Yiyin Chung
- From the Department of Molecular Pharmacology and
| | - Hsiu-Ming Shih
- the Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan, and
| | - Keqin Kathy Li
- the State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Rui Jin Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, 197 Ruijin II Road, Shanghai 200025, China
| | - David K Ann
- From the Department of Molecular Pharmacology and Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope, Duarte, California 91010,
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Abstract
HIC1 (hypermethylated in cancer 1) is a tumor suppressor gene, expression of which is frequently suppressed in human cancers. Very little is known about the molecular basis of HIC1 in antagonizing oncogenic pathways. Here, we report that HIC1 forms complexes with the signal transducers and activators of transcription 3 (STAT3) and attenuates STAT3-mediated transcription. STAT3 was identified as a HIC1-interacting protein by affinity capture and followed by mass spectrometry analysis. Overexpression or depletion of HIC1 resulted in decreased or increased levels of interleukin-6 (IL-6)/oncostatin M (OSM)-induced STAT3-mediated reporter activity and expression of target genes such as VEGF and c-Myc, respectively. Furthermore, HIC1 suppressing the VEGF and c-Myc promoter activity and the colony formation of MDA-MB 231 cells were STAT3-dependent. Further studies showed that HIC1 interacts with the DNA binding domain of STAT3 and suppresses the binding of STAT3 to its target gene promoters. Domain mapping study revealed that HIC1 C-terminal domain binds to STAT3. HIC1 mutant defective in STAT3 interaction reduced its repressive effect on STAT3 DNA binding activity, the reporter activity and gene expression of the VEGF and c-Myc genes, and cell growth in MDA-MB 231 cells. Altogether, our findings not only provide a novel role of HIC1 in antagonizing STAT3-mediated activation of VEGF and c-Myc gene expression and cell growth, but also elucidate a molecular basis underlying the inhibitory effect of HIC1 on STAT3 transcriptional potential.
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Affiliation(s)
- Ying-Mei Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, ROC
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30
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Chen CH, Chang CC, Lee TH, Luo M, Huang P, Liao PH, Wei S, Li FA, Chen RH, Zhou XZ, Shih HM, Lu KP. SENP1 deSUMOylates and regulates Pin1 protein activity and cellular function. Cancer Res 2013; 73:3951-62. [PMID: 23633483 DOI: 10.1158/0008-5472.can-12-4360] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The Pin1 prolyl isomerase regulates phosphorylation signaling by controlling protein conformation after phosphorylation, and its upregulation promotes oncogenesis via acting on numerous oncogenic molecules. SUMOylation and deSUMOylation are dynamic mechanisms regulating a spectrum of protein activities. The SUMO proteases (SENP) remove SUMO conjugate from proteins, and their expression is deregulated in cancers. However, nothing is known about the role of SUMOylation in regulating Pin1 function. Here, we show that Pin1 is SUMOylated on Lys6 in the WW domain and on Lys63 in the PPIase domain. Pin1 SUMOylation inhibits its protein activity and oncogenic function. We further identify that SENP1 binds to and deSUMOylates Pin1. Importantly, either overexpression of SENP1 or disruption of Pin1 SUMOylation promotes the ability of Pin1 to induce centrosome amplification and cell transformation. Moreover, SENP1 also increases Pin1 protein stability in cell cultures, and Pin1 levels are positively correlated with SENP1 levels in human breast cancer specimens. These results not only uncover Pin1 SUMOylation on Lys6/63 as a novel mechanism to inhibit its activity and function but also identify a critical role for SENP1-mediated deSUMOylation in promoting Pin1 function during tumorigenesis.
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Affiliation(s)
- Chun-Hau Chen
- Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
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31
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Kuo HY, Chen YC, Chang HY, Jeng JC, Lin EH, Pan CM, Wang ML, Chou YT, Shih HM, Wu CW. Abstract 3047: The PML isoform IV is a negative regulator of nuclear EGFR's transcriptional activity in lung cancer. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-3047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
EGF receptor (EGFR) is a membrane-bound receptor tyrosine kinase which can transduce intracellular signals responsible for cell proliferation. It is frequently overexpressed and/or constitutively activated in non-small cell lung cancer (NSCLC) and thus is considered as a major cause of this disease. Recently, EGFR has been found in the nucleus where the nuclear EGFR (nEGFR) can function as a transcription factor activating the transcription of genes such as cyclin D1 gene (CCND1) which is essential for cell proliferation. Nevertheless, how nEGFR's transcriptional activity is regulated remains unclear. Promyelocytic leukemia protein (PML) is a tumor suppressor which is lost in various cancers including lung cancer. However, the role of PML in the suppression of lung cancer growth is still unclear. When we investigated the role of PML in the regulation of lung cancer cell growth, we found that PML isoform IV (PMLIV) preferentially represses the growth of lung cancer cells bearing constitutively active EGFR. Besides, when growing in the EGFR activating conditions, the growth of EGFR wild-type bearing A549 cells has been repressed by PMIV overexpression. We also found that PMLIV has protein-protein interactions with nEGFR and represses the transcription of nEGFR target genes. We showed that PMLIV is recruited by nEGFR to the target promoters and reduces the promoter histone acetylation level via HDAC1. Together, our results suggest that PMLIV interacts with nEGFR upon EGFR activation and represses the transcription of nEGFR target genes such as CCND1 and thus leading to inhibition of the lung cancer cell growth.
Citation Format: Hong-Yi Kuo, Yi-Chen Chen, Hsiang-Yi Chang, Jen-Chong Jeng, Erh-Hsuan Lin, Chih-Ming Pan, Mong-Lien Wang, Yu-Ting Chou, Hsiu-Ming Shih, Cheng-Wen Wu. The PML isoform IV is a negative regulator of nuclear EGFR's transcriptional activity in lung cancer. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 3047. doi:10.1158/1538-7445.AM2013-3047
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Affiliation(s)
| | - Yi-Chen Chen
- 2Institute of Biochemistry and Molecular Biology, National Yang Ming University, Taipei, Taiwan
| | - Hsiang-Yi Chang
- 2Institute of Biochemistry and Molecular Biology, National Yang Ming University, Taipei, Taiwan
| | | | - Erh-Hsuan Lin
- 2Institute of Biochemistry and Molecular Biology, National Yang Ming University, Taipei, Taiwan
| | - Chih-Ming Pan
- 2Institute of Biochemistry and Molecular Biology, National Yang Ming University, Taipei, Taiwan
| | - Mong-Lien Wang
- 2Institute of Biochemistry and Molecular Biology, National Yang Ming University, Taipei, Taiwan
| | - Yu-Ting Chou
- 3Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
| | | | - Cheng-Wen Wu
- 2Institute of Biochemistry and Molecular Biology, National Yang Ming University, Taipei, Taiwan
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Abstract
The DNA damage response (DDR) involves both the control of DNA damage repair and signaling to cell cycle checkpoints. Therefore, unraveling the underlying mechanisms of the DDR is important for understanding tumor suppression and cellular resistance to clastogenic cancer therapeutics. Because the DDR is likely to be influenced by chromatin regulation at the sites of DNA damage, we investigated the role of heterochromatin protein 1 (HP1) during the DDR process. We monitored double-strand breaks (DSBs) using the γH2AX foci marker and found that depleting cells of HP1 caused genotoxic stress, a delay in the repair of DSBs and elevated levels of apoptosis after irradiation. Furthermore, we found that these defects in repair were associated with impaired BRCA1 function. Depleting HP1 reduced recruitment of BRCA1 to DSBs and caused defects in two BRCA1-mediated DDR events: (i) the homologous recombination repair pathway and (ii) the arrest of cell cycle at the G2/M checkpoint. In contrast, depleting HP1 from cells did not affect the non-homologous end-joining (NHEJ) pathway: instead it elevated the recruitment of the 53BP1 NHEJ factor to DSBs. Notably, all three subtypes of HP1 seemed to be almost equally important for these DDR functions. We suggest that the dynamic interaction of HP1 with chromatin and other DDR factors could determine DNA repair choice and cell fate after DNA damage. We also suggest that compromising HP1 expression could promote tumorigenesis by impairing the function of the BRCA1 tumor suppressor.
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Affiliation(s)
- Young-Ho Lee
- Department of Molecular Pharmacology, Beckman Research Institute, City of Hope, Duarte, CA 91010, USA
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33
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Kuo HY, Chen YC, Chang HY, Jeng JC, Lin EH, Pan CM, Chang YW, Wang ML, Chou YT, Shih HM, Wu CW. The PML isoform IV is a negative regulator of nuclear EGFR’s transcriptional activity in lung cancer. Carcinogenesis 2013; 34:1708-16. [DOI: 10.1093/carcin/bgt109] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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34
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Ying HY, Su ST, Hsu PH, Chang CC, Lin IY, Tseng YH, Tsai MD, Shih HM, Lin KI. SUMOylation of Blimp-1 is critical for plasma cell differentiation. EMBO Rep 2012; 13:631-7. [PMID: 22555612 DOI: 10.1038/embor.2012.60] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 04/16/2012] [Accepted: 04/17/2012] [Indexed: 11/09/2022] Open
Abstract
Transcriptional repressor B lymphocyte-induced maturation protein-1 (Blimp-1) is a master regulator of plasma cell differentiation. Here we show that Blimp-1 is covalently modified by SUMO1 at lysine 816, a modification mediated by SUMO E3 ligase PIAS1. Mutation of Blimp-1 lysine 816 reduces transcriptional repression--correlating with a reduced interaction with a histone deacetylase, HDAC2--and impairs differentiation of antibody-secreting cells. Thus, the SUMO pathway critically regulates Blimp-1 function during plasma cell differentiation.
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Affiliation(s)
- Hsia-Yuan Ying
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
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35
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Wu JCC, Chen KY, Yu YW, Huang SW, Shih HM, Chiu WT, Chiang YH, Shiau CY. Location and level of Etk expression in neurons are associated with varied severity of traumatic brain injury. PLoS One 2012; 7:e39226. [PMID: 22723969 PMCID: PMC3377631 DOI: 10.1371/journal.pone.0039226] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Accepted: 05/20/2012] [Indexed: 01/24/2023] Open
Abstract
Background Much recent research effort in traumatic brain injury (TBI) has been devoted to the discovery of a reliable biomarker correlating with severity of injury. Currently, no consensus has been reached regarding a representative marker for traumatic brain injury. In this study, we explored the potential of epithelial/endothelial tyrosine kinase (Etk) as a novel marker for TBI. Methodology/Principal Findings TBI was induced in Sprague Dawley (SD) rats by controlled cortical impact. Brain tissue samples were analyzed by Western blot, Q-PCR, and immunofluorescence staining using various markers including glial fibrillary acidic protein, and epithelial/endothelial tyrosine kinase (Etk). Results show increased Etk expression with increased number and severity of impacts. Expression increased 2.36 to 7-fold relative to trauma severity. Significant upregulation of Etk appeared at 1 hour after injury. The expression level of Etk was inversely correlated with distance from injury site. Etk and trauma/inflammation related markers increased post-TBI, while other tyrosine kinases did not. Conclusion/Significance The observed correlation between Etk level and the number of impacts, the severity of impact, and the time course after impact, as well as its inverse correlation with distance away from injury site, support the potential of Etk as a possible indicator of trauma severity.
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Affiliation(s)
- John Chung-Che Wu
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Taitung Christian Hospital, Taitung, Taiwan, Republic of China
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan, Republic of China
| | - Kai-Yun Chen
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan, Republic of China
- Neural Regenerative Program, College of Medical Science and Technology, Taipei, Taiwan, Republic of China
- Translational Research Laboratory, Cancer Center, Taipei Medical University Hospital, Taipei, Taiwan, Republic of China
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan, Republic of China
| | - Yu-Wen Yu
- Neural Regenerative Program, College of Medical Science and Technology, Taipei, Taiwan, Republic of China
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan, Republic of China
| | - Song-Wei Huang
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan, Republic of China
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Republic of China
| | - Wen-Ta Chiu
- Ministry of Health, Taipei, Taiwan, Republic of China
| | - Yung-Hsiao Chiang
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan, Republic of China
- Neural Regenerative Program, College of Medical Science and Technology, Taipei, Taiwan, Republic of China
- Translational Research Laboratory, Cancer Center, Taipei Medical University Hospital, Taipei, Taiwan, Republic of China
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan, Republic of China
- * E-mail: (YHC); (CYS)
| | - Chia-Yang Shiau
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
- * E-mail: (YHC); (CYS)
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Chen KY, Wu CC, Chang CF, Chen YH, Chiu WT, Lou YH, Chen YH, Shih HM, Chiang YH. Suppression of Etk/Bmx Protects against Ischemic Brain Injury. Cell Transplant 2012; 21:345-54. [DOI: 10.3727/096368911x582741] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Etk/Bmx (epithelial and endothelial tyrosine kinase, also known as BMX), a member of the Tec (tyrosine kinase expressed in hepatocellular carcinoma) family of protein-tyrosine kinases, is an important regulator of signal transduction for the activation of cell growth, differentiation, and development. We have previously reported that activation of Etk leads to apoptosis in MDA-MB-468 cells. The purpose of this study was to examine the role of Etk in neuronal injury induced by H2O2 or ischemia. Using Western blot analysis and immunohistochemistry, we found that treatment with H2O2 significantly enhanced phosphorylation of Etk and its downstream signaling molecule Stat1 in primary cortical neurons. Inhibiting Etk activity by LFM-A13 or knocking down Etk expression by a specific shRNA increased the survival of primary cortical neurons. Similarly, at 1 day after a 60-min middle cerebral artery occlusion (MCAo) in adult rats, both phosphorylated Etk and Stat1 were coexpressed with apoptotic markers in neurons in the penumbra. Pretreatment with LFM-A13 or an adenoviral vector encoding the kinase deletion mutant EtkΔk attenuated caspase-3 activity and infarct volume in ischemic brain. All together, our data suggest that Etk is activated after neuronal injury. Suppressing Etk activity protects against neurodegeneration in ischemic brain.
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Affiliation(s)
- Kai-Yun Chen
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Translational Research Laboratory, Cancer Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chung-Che Wu
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Cheng-Fu Chang
- Department of Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Yuan-Hao Chen
- Department of Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Wen-Ta Chiu
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ya-Hsin Lou
- Department of Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Yen-Hua Chen
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Translational Research Laboratory, Cancer Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Hsiu-Ming Shih
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yung-Hsiao Chiang
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Translational Research Laboratory, Cancer Center, Taipei Medical University Hospital, Taipei, Taiwan
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38
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Lan HC, Wu CF, Shih HM, Chung BC. Death-associated protein 6 (Daxx) mediates cAMP-dependent stimulation of Cyp11a1 (P450scc) transcription. J Biol Chem 2011; 287:5910-6. [PMID: 22199361 DOI: 10.1074/jbc.m111.307603] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
SF-1 is a key transcription factor for all steroidogenic genes. It up-regulates the expression of the steroidogenic Cyp11a1 gene in the adrenal in a pathway stimulated by cAMP through HIPK3-mediated JNK/c-Jun phosphorylation. In the present study, we have investigated the factors mediating cAMP-dependent HIPK3 action to potentiate the activity of SF-1 for Cyp11a1 transcription in mouse adrenocortical Y1 cells. We found Daxx, a HIPK kinase substrate in the apoptosis pathway, was phosphorylated by HIPK3 at Ser-669 in response to cAMP stimulation. Daxx participated in SF-1-dependent Cyp11a1 expression as shown by experiments involving both overexpression and down-regulation via a dominant negative Daxx mutant. The S669A mutant of Daxx, which could not be phosphorylated by HIPK3, lost the ability to potentiate SF-1 activity for Cyp11a1 expression. The enhancement of SF-1 activity by Daxx required JNK and c-Jun phosphorylation. Thus, Daxx functioned as a signal transducer linking cAMP-stimulated HIPK3 activity with JNK/c-Jun phosphorylation and SF-1-dependent Cyp11a1 transcription for steroid synthesis.
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Affiliation(s)
- Hsin-Chieh Lan
- Institute of Molecular Biology, Academia Sinica, Taipei 115, Taiwan
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39
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Zhi H, Yang L, Kuo YL, Ho YK, Shih HM, Giam CZ. NF-κB hyper-activation by HTLV-1 Tax induces cellular senescence, but can be alleviated by the viral anti-sense protein HBZ. Retrovirology 2011. [PMCID: PMC3112677 DOI: 10.1186/1742-4690-8-s1-a200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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40
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Ho YK, Zhi H, DeBiaso D, Shih HM, Giam CZ. Tax-induced rapid senescence is mediated by both classical and alternative NF-κB pathways. Retrovirology 2011. [PMCID: PMC3112663 DOI: 10.1186/1742-4690-8-s1-a189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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41
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Chen SC, Chang LY, Wang YW, Chen YC, Weng KF, Shih SR, Shih HM. Sumoylation-promoted enterovirus 71 3C degradation correlates with a reduction in viral replication and cell apoptosis. J Biol Chem 2011; 286:31373-84. [PMID: 21784861 PMCID: PMC3173077 DOI: 10.1074/jbc.m111.254896] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 07/19/2011] [Indexed: 11/06/2022] Open
Abstract
Enterovirus 71 (EV71), a member of the Picornaviridae family, may cause serious clinical manifestations associated with the central nervous system. Enterovirus 3C protease is required for virus replication and can trigger host cell apoptosis via cleaving viral polyprotein precursor and cellular proteins, respectively. Although the role of the 3C protease in processing viral and cellular proteins has been established, very little is known about the modulation of EV71 3C function by host cellular factors. Here, we show that sumoylation promotes EV71 3C protein ubiquitination for degradation, correlating with a decrease of EV71 in virus replication and cell apoptosis. SUMO E2-conjugating enzyme Ubc9 was identified as an EV71 3C-interacting protein. Further studies revealed that EV71 3C can be SUMO (small ubiquitin-like modifier)-modified at residue Lys-52. Sumoylation down-regulated 3C protease activity in vitro and also 3C protein stability in cells, in agreement with data suggesting 3C K52R protein induced greater substrate cleavage and apoptosis in cells. More importantly, the recombinant EV71 3C K52R virus infection conferred more apoptotic phenotype and increased virus levels in culture cells, which also correlated with a mouse model showing increased levels of viral VP1 protein in intestine and neuron loss in the spinal cord with EV71 3C K52R recombinant viral infection. Finally, we show that EV71 3C amino acid residues 45-52 involved in Ubc9 interaction determined the extent of 3C sumoylation and protein stability. Our results uncover a previously undescribed cellular regulatory event against EV71 virus replication and host cell apoptosis by sumoylation at 3C protease.
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Affiliation(s)
- Shu-Chuan Chen
- From the Institute of Biomedical Sciences, Academia Sinica
- the Graduate Institute of Life Sciences, National Defense Medical Center, and
| | - Luan-Yin Chang
- the Department of Pediatrics, National Taiwan University Hospital, National Taiwan University, Taipei 11529, Taiwan and
| | - Yi-Wei Wang
- From the Institute of Biomedical Sciences, Academia Sinica
- the Graduate Institute of Life Sciences, National Defense Medical Center, and
| | - Yi-Chun Chen
- From the Institute of Biomedical Sciences, Academia Sinica
| | - Kuo-Feng Weng
- the Department of Medical Biotechnology, Chang Gung University, Taoyuan 33302, Taiwan
| | - Shin-Ru Shih
- the Department of Medical Biotechnology, Chang Gung University, Taoyuan 33302, Taiwan
| | - Hsiu-Ming Shih
- From the Institute of Biomedical Sciences, Academia Sinica
- the Graduate Institute of Life Sciences, National Defense Medical Center, and
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42
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Yuan WC, Lee YR, Huang SF, Lin YM, Chen TY, Chung HC, Tsai CH, Chen HY, Chiang CT, Lai CK, Lu LT, Chen CH, Gu DL, Pu YS, Jou YS, Lu KP, Hsiao PW, Shih HM, Chen RH. A Cullin3-KLHL20 Ubiquitin ligase-dependent pathway targets PML to potentiate HIF-1 signaling and prostate cancer progression. Cancer Cell 2011; 20:214-28. [PMID: 21840486 DOI: 10.1016/j.ccr.2011.07.008] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 05/13/2011] [Accepted: 07/12/2011] [Indexed: 12/11/2022]
Abstract
Tumor hypoxia is associated with disease progression and treatment failure, but the hypoxia signaling mechanism is not fully understood. Here, we show that KLHL20, a Cullin3 (Cul3) substrate adaptor induced by HIF-1, coordinates with the actions of CDK1/2 and Pin1 to mediate hypoxia-induced PML proteasomal degradation. Furthermore, this PML destruction pathway participates in a feedback mechanism to maximize HIF-1α induction, thereby potentiating multiple tumor hypoxia responses, including metabolic reprogramming, epithelial-mesenchymal transition, migration, tumor growth, angiogenesis, and chemoresistance. In human prostate cancer, overexpression of HIF-1α, KLHL20, and Pin1 correlates with PML down-regulation, and hyperactivation of the PML destruction pathway is associated with disease progression. Our study indicates that the KLHL20-mediated PML degradation and HIF-1α autoregulation play key roles in tumor progression.
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Affiliation(s)
- Wei-Chien Yuan
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
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Chang CC, Naik MT, Huang YS, Jeng JC, Liao PH, Kuo HY, Ho CC, Hsieh YL, Lin CH, Huang NJ, Naik NM, Kung CCH, Lin SY, Chen RH, Chang KS, Huang TH, Shih HM. Structural and functional roles of Daxx SIM phosphorylation in SUMO paralog-selective binding and apoptosis modulation. Mol Cell 2011; 42:62-74. [PMID: 21474068 DOI: 10.1016/j.molcel.2011.02.022] [Citation(s) in RCA: 120] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Revised: 12/02/2010] [Accepted: 01/24/2011] [Indexed: 11/26/2022]
Abstract
Small ubiquitin-like modifier (SUMO) conjugation and interaction are increasingly associated with various cellular processes. However, little is known about the cellular signaling mechanisms that regulate proteins for distinct SUMO paralog conjugation and interactions. Using the transcriptional coregulator Daxx as a model, we show that SUMO paralog-selective binding and conjugation are regulated by phosphorylation of the Daxx SUMO-interacting motif (SIM). NMR structural studies show that Daxx (732)E-I-I-V-L-S-D-S-D(740) is a bona fide SIM that binds to SUMO-1 in a parallel orientation. Daxx-SIM is phosphorylated by CK2 kinase at residues S737 and S739. Phosphorylation promotes Daxx-SIM binding affinity toward SUMO-1 over SUMO-2/3, causing Daxx preference for SUMO-1 conjugation and interaction with SUMO-1-modified factors. Furthermore, Daxx-SIM phosphorylation enhances Daxx to sensitize stress-induced cell apoptosis via antiapoptotic gene repression. Our findings provide structural insights into the Daxx-SIM:SUMO-1 complex, a model of SIM phosphorylation-enhanced SUMO paralog-selective modification and interaction, and phosphorylation-regulated Daxx function in apoptosis.
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Affiliation(s)
- Che-Chang Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
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Naik MT, Chang CC, Naik NM, Kung CCH, Shih HM, Huang TH. NMR chemical shift assignments of a complex between SUMO-1 and SIM peptide derived from the C-terminus of Daxx. Biomol NMR Assign 2011; 5:75-77. [PMID: 20927612 DOI: 10.1007/s12104-010-9271-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2010] [Accepted: 09/24/2010] [Indexed: 05/30/2023]
Abstract
Small Ubiquitin-like MOdifiers (SUMOs) are ubiquitin-like proteins known to covalently modify large number of cellular proteins. The mammalian SUMO family includes four paralogues, SUMO-1 through SUMO-4. Death-associated protein-6, Daxx, is a 740 residue important transcription corepressor known to represses transcriptional potential of several sumolyted transcription factors. Daxx also plays important role in apoptosis. Both terminals of Daxx harbor separate SUMO Interaction Motifs (SIM), which mediate its interaction with SUMO and hence the sumolyted transcription factors. The C-terminal SIM of Daxx preferentially binds SUMO-1. Practically complete (1)H, (13)C and (15)N resonance assignments for the complex between SUMO-1 and 20 residue Daxx C-terminal SIM peptide are reported here.
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Affiliation(s)
- Mandar T Naik
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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45
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Abstract
CHC binds specifically to aurora A–phosphorylated TACC3, recruiting it
to the spindle during mitosis. Mitotic spindles play essential roles in chromosome congression and segregation
during mitosis. Aurora A regulates spindle assembly in part via phosphorylating
human TACC3 on S558, which triggers TACC3 relocalization to mitotic spindles and
stabilizes microtubules (MTs). In this study, we identified clathrin heavy chain
(CHC) as an adaptor protein to recruit S558-phosphorylated TACC3 onto the
spindle during mitosis for MT stabilization. CHC binds phospho-S558 TACC3 via
its linker domain and first CHC repeat. CHC depletion or mutation on
phospho-TACC3 binding abrogates TACC3 spindle relocalization. Depletion of
either or both CHC and TACC3 yields similar defective phenotypes: loss of ch-TOG
on spindles, disorganized spindles, and chromosome misalignment with comparable
mitotic delay. Our findings elucidate the association between aurora A
phosphorylation and spindle apparatus and demonstrate that regulation from
aurora A is mediated by CHC in recruiting phospho-TACC3 and subsequently ch-TOG
to mitotic spindles.
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Affiliation(s)
- Chiou-Hong Lin
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11529, Taiwan
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46
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Li X, Lin HH, Chen H, Xu X, Shih HM, Ann DK. SUMOylation of the transcriptional co-repressor KAP1 is regulated by the serine and threonine phosphatase PP1. Sci Signal 2010; 3:ra32. [PMID: 20424263 DOI: 10.1126/scisignal.2000781] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Krüppel-associated box (KRAB) domain-associated protein 1 [KAP1, also known as transcription intermediary factor-1beta (TIF1beta)] is a ubiquitous transcriptional co-repressor that is susceptible to phosphorylation at Ser(824) by ataxia-telangiectasia mutated (ATM) and to modification by small ubiquitin-like modifying (SUMO) proteins. Here, we found that, whereas the protein phosphatase 1alpha isoform (PP1alpha) directly interacted with KAP1 under basal conditions, PP1beta interacted with KAP1 only in response to genotoxic stress. Changes in the abundance of PP1alpha or PP1beta had differential effects on the phosphorylation and SUMOylation states of KAP1 under basal conditions and in response to DNA double-strand breaks (DSBs). Chromatin immunoprecipitation and re-immunoprecipitation experiments revealed that PP1alpha and PP1beta were recruited to KAP1 with different kinetics before and after the induction of DNA DSBs, which provided a mechanistic basis for the switch in the phosphorylation and SUMOylation states of KAP1. PP1beta-dependent SUMOylation of KAP1 occurred by mechanisms that were dependent and independent of the phosphorylation status of Ser(824). We posit a mechanism whereby the combined actions of PP1alpha and PP1beta cause dephosphorylation of KAP1 at Ser(824) and assure its SUMOylation to counter the effect of ATM, thereby regulating the transcription of KAP1 target genes in unstressed and stressed cells.
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Affiliation(s)
- Xu Li
- Department of Molecular Pharmacology, City of Hope Beckman Research Institute, Duarte, CA 91010, USA
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47
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Shen CH, Lee YR, Ho HC, Yuan WC, Chen CH, Shih HM, Chen RH. Abstract LB-18: The Cullin 3 substrate adaptor DIP-2 mediates DAPK ubiquitination to control interferon responses. Cancer Res 2010. [DOI: 10.1158/1538-7445.am10-lb-18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Death-associated protein kinase (DAPK) is a pro-apoptotic, calmodulin-regulated serine/threonine kinase and was originally identified based on its involvement in interferon- -induced cell death. Whether and how interferon-γ-signaling regulates the activity or expression of DAPK remains largely unexplored. In this study, we identify the BTB-Kelch protein DIP2 functions as a negative regulator of DAPK by potentiating the proteosomal degradation of DAPK. DIP2 binds DAPK and Cul3 via its Kelch repeats and BTB domain, respectively. The DIP2-Cul3-ROC1 E3 ligase complex promotes DAPK ubiquitination both in vivo and in vitro, and downregulation of endogenous DIP2 diminishes DAPK ubiquitination and biological functions. The DIP2-dependent DAPK ubiquitination is suppressed in cells receiving either interferon-α or interferon-γ, which induces an enrichment/sequestration of DIP2 in the PML nuclear bodies, thereby separating DIP2 from its substrate DAPK. Through disrupting the interaction of DAPK with its E3 ligase, interferon triggers the stabilization of pro-apoptotic DAPK, which contributes to the cell death-promoting function of interferon. This study not only identifies the DIP2-Cul3-ROC1 complex as an E3 ligase for DAPK ubiquitination, but also reveals the underlying mechanism of DAPK regulation by interferon.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr LB-18.
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Affiliation(s)
- Che-Hung Shen
- 1Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Yu-Ru Lee
- 2Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hsuan-Chung Ho
- 2Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Wei-Chien Yuan
- 1Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Chun-Hau Chen
- 1Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Hsiu-Ming Shih
- 3Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Ruey-Hwa Chen
- 1Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
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48
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Abstract
Transforming acidic coiled-coil protein 3 (TACC3) was reported to be important for regulating mitotic spindle assembly and chromosome segregation. While the protein level of TACC3 was shown to be altered during cell cycle progression, the molecular mechanism in controlling TACC3 level is unclear. Here, we show that TACC3 protein level can be regulated by Cdh1, a well known activator of anaphase-promoting complex/cyclosome. We identified Cdh1 as an interacting partner of TACC3 by a yeast array screen. Both in vitro and in vivo binding studies indicated that TACC3 can form complexes with Cdh1. Depletion of endogenous Cdh1 prolonged TACC3 protein level during mitotic exit. Alteration of Cdh1 level by ectopic overexpression or siRNA knockdown correlated well with an increase or decrease of ubiquitinated TACC3, respectively. Furthermore, the domain mapping studies of TACC3 revealed that multiple domains are involved in Cdh1-regulated degradation of TACC3. Altogether, our findings suggest that Cdh1 controls TACC3 protein stability during mitotic exit.
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Affiliation(s)
- Jen-Chong Jeng
- Graduate Institute of Life Sciences, National Defense Medical Center and Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Republic of China
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49
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Huang YS, Shih HM. Daxx positively modulates beta-catenin/TCF4-mediated transcriptional potential. Biochem Biophys Res Commun 2009; 386:762-8. [PMID: 19563778 DOI: 10.1016/j.bbrc.2009.06.126] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Accepted: 06/24/2009] [Indexed: 11/30/2022]
Abstract
Constitutive activation of the transcription factor TCF4 activity by mutated APC or beta-catenin contributes to cell neoplastic transformation. While numerous proteins were identified to activate TCF4-dependent activity via beta-catenin interaction, little is known about factors directly acting on TCF4. Here we report that Daxx binds to TCF4 and potentiates beta-catenin/TCF4-mediated transcriptional activation and target gene expression. Binding studies revealed that Daxx-TCF4 interaction is through the C-terminal domain of Daxx and TCF4 segment containing amino acid residue 269-327. Alteration of Daxx levels in cells by overexpression or RNA interference resulted in an increase or decrease of the beta-catenin/TCF4-dependent transactivation activity and target gene expression, respectively. Furthermore, TCF4-(269-327) segment acts as a dominantly negative mutant by blocking Daxx-TCF4 interaction and TCF4-mediated transactivation potential. Together, our results suggest that Daxx functions as a positive coregulator in modulating the beta-catenin/TCF4-dependent transcriptional potential via TCF4 interaction.
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Affiliation(s)
- Yen-Sung Huang
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, ROC
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50
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Wang HC, Huang YS, Ho CC, Jeng JC, Shih HM. SUMO modification modulates the activity of calpain-2. Biochem Biophys Res Commun 2009; 384:444-9. [PMID: 19422794 DOI: 10.1016/j.bbrc.2009.04.152] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Accepted: 04/25/2009] [Indexed: 10/20/2022]
Abstract
Small ubiquitin-like modifier (SUMO) modification has been shown to be involved in the regulation of various cellular processes including gene transcription, nucleocytoplasmic transport, cell cycle, DNA repair, stress response, and signal transduction. However, very little is known about the process of cell migration being modulated by SUMO modification. Here, we show that calpain-2, a protease involved in cell motility, can be SUMO modified at lysine residue 390. Converting the SUMO acceptor lysine residue to arginine residue significantly attenuated calpain-2 activity, correlating well with a loss of calpain-2-elicited cell motility. Accordingly, expression of SENP1 could abrogate calpain-2 sumoylation, causing an inhibition on calpain-2-dependent activity and cell motility. These results not only identify calpain-2 as a substrate for sumoylation but also provide an important role of sumoylation in regulating cell migration.
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Affiliation(s)
- Hsueh-Chun Wang
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, ROC
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