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Jing S, Gao J, Tiwari N, Du Y, Zhu L, Gim B, Qian Y, Yue X, Lee I. SUMOylated Golgin45 associates with PML-NB to transcriptionally regulate lipid metabolism genes during heat shock stress. Commun Biol 2024; 7:532. [PMID: 38710927 DOI: 10.1038/s42003-024-06232-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 04/23/2024] [Indexed: 05/08/2024] Open
Abstract
Golgin tethers are known to mediate vesicular transport in the secretory pathway, whereas it is relatively unknown whether they may mediate cellular stress response within the cell. Here, we describe a cellular stress response during heat shock stress via SUMOylation of a Golgin tether, Golgin45. We found that Golgin45 is a SUMOylated Golgin via SUMO1 under steady state condition. Upon heat shock stress, the Golgin enters the nucleus by interacting with Importin-β2 and gets further modified by SUMO3. Importantly, SUMOylated Golgin45 appears to interact with PML and SUMO-deficient Golgin45 mutant functions as a dominant negative for PML-NB formation during heat shock stress, suppressing transcription of lipid metabolism genes. These results indicate that Golgin45 may play a role in heat stress response by transcriptional regulation of lipid metabolism genes in SUMOylation-dependent fashion.
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Affiliation(s)
- Shuaiyang Jing
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jingkai Gao
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Neeraj Tiwari
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Yulei Du
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lianhui Zhu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Bopil Gim
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yi Qian
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Xihua Yue
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Intaek Lee
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
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2
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Park SLL, Ramírez-Jarquín UN, Shahani N, Rivera O, Sharma M, Joshi PS, Hansalia A, Dagar S, McManus FP, Thibault P, Subramaniam S. SUMO modifies GβL and mediates mTOR signaling. J Biol Chem 2024; 300:105778. [PMID: 38395307 PMCID: PMC10982569 DOI: 10.1016/j.jbc.2024.105778] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 01/25/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
The mechanistic target of rapamycin (mTOR) signaling is influenced by multiple regulatory proteins and post-translational modifications; however, underlying mechanisms remain unclear. Here, we report a novel role of small ubiquitin-like modifier (SUMO) in mTOR complex assembly and activity. By investigating the SUMOylation status of core mTOR components, we observed that the regulatory subunit, GβL (G protein β-subunit-like protein, also known as mLST8), is modified by SUMO1, 2, and 3 isoforms. Using mutagenesis and mass spectrometry, we identified that GβL is SUMOylated at lysine sites K86, K215, K245, K261, and K305. We found that SUMO depletion reduces mTOR-Raptor (regulatory protein associated with mTOR) and mTOR-Rictor (rapamycin-insensitive companion of mTOR) complex formation and diminishes nutrient-induced mTOR signaling. Reconstitution with WT GβL but not SUMOylation-defective KR mutant GβL promotes mTOR signaling in GβL-depleted cells. Taken together, we report for the very first time that SUMO modifies GβL, influences the assembly of mTOR protein complexes, and regulates mTOR activity.
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Affiliation(s)
| | | | - Neelam Shahani
- Department of Neuroscience, The Wertheim UF Scripps Institute, Jupiter, Florida, USA
| | - Oscar Rivera
- Department of Neuroscience, The Wertheim UF Scripps Institute, Jupiter, Florida, USA
| | - Manish Sharma
- Department of Neuroscience, The Wertheim UF Scripps Institute, Jupiter, Florida, USA
| | | | - Aayushi Hansalia
- Department of Neuroscience, The Wertheim UF Scripps Institute, Jupiter, Florida, USA
| | - Sunayana Dagar
- Department of Neuroscience, The Wertheim UF Scripps Institute, Jupiter, Florida, USA
| | - Francis P McManus
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Quebec, Canada
| | - Pierre Thibault
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Quebec, Canada; Department of Chemistry, Université de Montréal, Montréal, Quebec, Canada
| | - Srinivasa Subramaniam
- Department of Neuroscience, The Wertheim UF Scripps Institute, Jupiter, Florida, USA; The Skaggs Graduate School of Chemical and Biological Sciences, The Scripps Research Institute, La Jolla, California, USA; Norman Fixel Institute for Neurological Diseases, Gainesville, Florida, USA.
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3
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Chen Y, Liu K, Zhang G, Cheng J, Tu J. Monoclonal antibody-based systematic identification of SUMO1-modification sites reveals TFII-I SUMOylation is involved in tumor growth. J Cell Physiol 2024; 239:e31080. [PMID: 37450667 DOI: 10.1002/jcp.31080] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/23/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
SUMOylation plays an essential role in diverse physiological and pathological processes. Identification of wild-type SUMO1-modification sites by mass spectrometry is still challenging. In this study, we produced a monoclonal SUMO1C-K antibody recognizing SUMOylated peptides and proposed an efficient streamline for identification of SUMOylation sites. We identified 471 SUMOylation sites in 325 proteins from five raw data. These identified sites exhibit a high positive rate when evaluated by mutation-verified SUMOylation sites. We identified many SUMOylated proteins involved in mitochondrial metabolism and non-membrane-bounded organelles formation. We proposed a SUMOylation motif, ΨKXD/EP, where proline is required for efficient SUMOylation. We further revealed SUMOylation of TFII-I was stimulated by growth signals and was required for nucleus-localization of p-ERK1/2. Mutation of SUMOylation sites of TFII-I suppressed tumor cell growth in vitro and in vivo. Taken together, we provided a strategy for personalized identification of wild-type SUMO1-modification sites and revealed the physiological significance of TFII-I SUMOylation in this study.
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Affiliation(s)
- Yalan Chen
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kexin Liu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Geqiang Zhang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinke Cheng
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Tu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Hammami NEH, Mérindol N, Plourde MB, Maisonnet T, Lebel S, Berthoux L. SUMO-3 promotes the ubiquitin-dependent turnover of TRIM55. Biochem Cell Biol 2024; 102:73-84. [PMID: 37703582 DOI: 10.1139/bcb-2023-0153] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023] Open
Abstract
Human muscle-specific RING fingers (MURFs) are members of the tripartite motif (TRIM) family of proteins characterized by their C-terminal subgroup one signature domain. MURFs play a role in sarcomere formation and microtubule dynamics. It was previously established that some TRIMs undergo post-translational modification by small ubiquitin-like modifier (SUMO). In this study, we explored the putative SUMOylation of MURF proteins as well as their interactions with SUMO. MURF proteins (TRIM54, TRIM55, and TRIM63) were not found to be SUMOylated. However, TRIM55 turnover by proteasomal and lysosomal degradation was higher upon overexpression of SUMO-3 but not of SUMO-1. Furthermore, it is predicted that TRIM55 contains two potential SUMO-interacting motifs (SIMs). We found that SIM1- and SIM2-mutated TRIM55 were more stable than the wild-type (WT) protein partly due to decreased degradation. Consistently, SIM-mutated TRIM55 was less polyubiquitinated than the WT protein, despite similar monoubiquitination levels. Using IF microscopy, we observed that SIM motifs influenced TRIM55 subcellular localization. In conclusion, our results suggest that SUMO-3 or SUMO-3-modified proteins modulate the localization, stability, and RING ubiquitin ligase activity of TRIM55.
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Affiliation(s)
- Nour-El-Houda Hammami
- Department of medical biology, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
| | - Natacha Mérindol
- Department of medical biology, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
| | - Mélodie B Plourde
- Department of medical biology, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
| | - Tara Maisonnet
- Department of medical biology, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
| | - Sophie Lebel
- Department of medical biology, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
| | - Lionel Berthoux
- Department of medical biology, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
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Xu X, Mao Y, Feng Z, Dai F, Gu T, Zheng J. SENP1 inhibits ferroptosis and promotes head and neck squamous cell carcinoma by regulating ACSL4 protein stability via SUMO1. Oncol Rep 2024; 51:34. [PMID: 38186303 PMCID: PMC10777466 DOI: 10.3892/or.2023.8693] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 12/01/2023] [Indexed: 01/09/2024] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is currently one of the most common malignancies with a poor prognosis worldwide. Meanwhile, small ubiquitin‑like modifier (SUMO) specific peptidase 1 (SENP1) was associated with ferroptosis. However, the specific functions and underlying mechanisms of action of SENP1 in ferroptosis and tumor progression of HNSCC remain to be established. The findings of the present study implicated a novel ferroptosis pathway in the initiation and progression of HNSCC, providing new functional targets to guide future therapy. In the present study, The Cancer Genome Atlas database was employed to establish a gene model related to ferroptosis and verified SENP1 as a key gene via transcriptome sequencing. Expression of SENP1 in HNSCC tissue and CAL‑27 cells was detected based on reverse transcription‑quantitative PCR and western blot analysis. Proliferation and migration abilities of cells were determined using Cell Counting Kit‑8, wound healing and Transwell experiments. Expression levels of iron, glutathione (GSH) and lipid peroxidation end‑product malondialdehyde (MDA) under conditions of silencing of SENP1 with shRNA lentivirus were assayed. Additionally, the relationship between SENP1 and long‑chain acyl‑coenzyme A synthase 4 (ACSL4) was validated with the aid of immunoblotting and co‑immunoprecipitation (co‑IP). Finally, the influence of shSENP1 on the expression of key ferroptosis proteins, glutathione peroxidase 4 (GPX4) and solute carrier family 7 member 11, was evaluated via western blotting. It was revealed that SENP1 was significantly overexpressed in HNSCC and associated with low patient survival. Silencing of SENP1 led to significant suppression of cell proliferation, migration and invasion, increase in the contents of iron ions and MDA and decline in GSH levels in HNSCC cells, thereby enhancing ferroptosis and inhibiting disease progression. Conversely, overexpression of SENP1 suppressed ferroptosis and promoted progression of HNSCC. Co‑IP and western blot analyses revealed a SUMOylation link between SENP1 and ACSL4. SENP1 reduced the stability of ACSL4 protein through deSUMOylation, leading to inhibition of ferroptosis. SENP1 silencing further inhibited the expression of the key iron death protein, GPX4, to regulate ferroptosis. Taken together, SENP1 deficiency promoted ferroptosis and inhibited tumor progression through reduction of SUMOylation of ACSL4 in HNSCC. The collective results of the present study supported the utility of SENP1 as an effective predictive biomarker for targeted treatment of HNSCC.
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Affiliation(s)
- Xianzhi Xu
- School of Stomatology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Yiting Mao
- School of Stomatology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Zhaowei Feng
- Department of Neurology, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221000, P.R. China
| | - Feng Dai
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221000, P.R. China
| | - Teng Gu
- School of Stomatology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Jiwei Zheng
- School of Stomatology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
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Jiang C, Zhang C, Dai M, Wang F, Xu S, Han D, Wang Y, Cao Y, Liang Y, Zhang Z, Yan L, Shen Y, He K, Shen Y, Liu J. Interplay between SUMO1-related SUMOylation and phosphorylation of p65 promotes hepatocellular carcinoma progression. Biochim Biophys Acta Mol Cell Res 2024; 1871:119595. [PMID: 37730133 DOI: 10.1016/j.bbamcr.2023.119595] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 09/10/2023] [Accepted: 09/14/2023] [Indexed: 09/22/2023]
Abstract
The nuclear factor kappaB (NF-κB) subunit p65, plays an important role in the progression of hepatocellular carcinoma (HCC). Phosphorylation of p65 is considered as an important mechanism for the positive regulation of NF-κB activity. According to our previous data, p65 can be SUMOylated by small ubiquitin-related modifier 1 (SUMO1) protein, and SUMO1 promotes p65 nuclear import and HCC progression. However, the effect of SUMO1-related p65 SUMOylation on NF-κB transcriptional activity and the relationship between phosphorylation and SUMOylation of p65 remain obscure. Here, we found that phosphorylated p65 level was increased in cancer tissues of HCC patients, and similar phenomenon was found for SUMO1 expression but not for SUMO2/3. Further clinical data showed a positive correlation between SUMO1 and phosphorylated p65. We also verified that overexpression of SUMO1 upregulated phosphorylated p65 levels. Next, we verified SUMO1-related p65 SUMOylation with in vitro SUMOylation assay, constructed mutants of p65 SUMOylation and phosphorylation, and found that SUMO1-related p65 SUMOylation promoted p65 nuclear import and increased NF-κB activity. Both SUMO1-related p65 SUMOylation and p65 phosphorylation (especially at S276 site) increased the viability and invasion of hepatoma cells, and decreased the apoptosis of hepatoma cells. At last, we found that the phosphorylation of p65 promoted the level of SUMO1-related p65 SUMOylation, and SUMO1-related p65 SUMOylation upregulated phosphorylated p65 (at S276 site). Our study contributes to the exploration of the oncogenic mechanism of p65, which is the important protein in HCC.
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Affiliation(s)
- Can Jiang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Chunyang Zhang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Min Dai
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Fuyan Wang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Sa Xu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Dan Han
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China; Clinical college, Anhui Medical University, Hefei, China
| | - Yanyan Wang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Yajie Cao
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Yanyan Liang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Ziyu Zhang
- The First Clinical College, Anhui Medical University, Hefei, China
| | - Lina Yan
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Yujun Shen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China
| | - Kewu He
- The Third Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Yuxian Shen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China.
| | - Jun Liu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China; Biopharmaceutical Institute, Anhui Medical University, Hefei, China.
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Wang Y, Wang JM, Xiao Y, Hu XB, Zheng SY, Fu JL, Zhang L, Gan YW, Liang XM, Li DWC. SUMO1-regulated DBC1 promotes p53-dependent stress-induced apoptosis of lens epithelial cells. Aging (Albany NY) 2023; 15:8812-8832. [PMID: 37683133 PMCID: PMC10522365 DOI: 10.18632/aging.205001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/20/2023] [Indexed: 09/10/2023]
Abstract
Deleted in breast cancer 1 (DBC1) was initially identified from a homozygously deleted region in human chromosome 8p21. It has been well established that DBC1 plays a dual role during cancer development. Depending on the physiological context, it can promote or inhibit tumorigenesis. Whether it plays a role in lens pathogenesis remains elusive. In the present study, we demonstrated that DBC1 is highly expressed in lens epithelial cells from different vertebrates and in retina pigment epithelial cells as well. Moreover, DBC1 is SUMOylated through SUMO1 conjugation at K591 residue in human and mouse lens epithelial cells. The SUMOylated DBC1 is localized in the nucleus and plays an essential role in promoting stress-induced apoptosis. Silence of DBC1 attenuates oxidative stress-induced apoptosis. In contrast, overexpression of DBC1 enhances oxidative stress-induced apoptosis, and this process depends on p53. Mechanistically, DBC1 interacts with p53 to regulate its phosphorylation status at multiple sites and the SUMOylation of DBC1 enhances its interaction with p53. Together, our results identify that DBC1 is an important regulator mediating stress-induced apoptosis in lens, and thus participates in control of lens cataractogenesis.
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Affiliation(s)
- Yan Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - Jing-Miao Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - Yuan Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - Xue-Bin Hu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - Shu-Yu Zheng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - Jia-Ling Fu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - Lan Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - Yu-Wen Gan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - Xing-Miao Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
| | - David Wan-Cheng Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, China
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Zhao YQ, Jin HR, Kim D, Jung SH, Liu S, Wan J, Lo HY, Fu XQ, Wang Q, Hao C, Bellail AC. SUMO1 degrader induces ER stress and ROS accumulation through deSUMOylation of TCF4 and inhibition of its transcription of StarD7 in colon cancer. Mol Carcinog 2023; 62:1249-1262. [PMID: 37191369 PMCID: PMC10524896 DOI: 10.1002/mc.23560] [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: 11/16/2022] [Revised: 02/09/2023] [Accepted: 05/04/2023] [Indexed: 05/17/2023]
Abstract
Small molecule degraders of small ubiquitin-related modifier 1 (SUMO1) induce SUMO1 degradation in colon cancer cells and inhibits the cancer cell growth; however, it is unclear how SUMO1 degradation leads to the anticancer activity of the degraders. Genome-wide CRISPR-Cas9 knockout screen has identified StAR-related lipid transfer domain containing 7 (StarD7) as a critical gene for the degrader's anticancer activity. Here, we show that both StarD7 mRNA and protein are overexpressed in human colon cancer and its knockout significantly reduces colon cancer cell growth and xenograft progression. The treatment with the SUMO1 degrader lead compound HB007 reduces StarD7 mRNA and protein levels and increases endoplasmic reticulum (ER) stress and reactive oxygen species (ROS) production in colon cancer cells and three-dimensional (3D) organoids. The study further provides a novel mechanism of the compound anticancer activity that SUMO1 degrader-induced decrease of StarD7 occur through degradation of SUMO1, deSUMOylation and degradation of T cell-specific transcription 4 (TCF4) and thereby inhibition of its transcription of StarD7 in colon cancer cells, 3D organoids and patient-derived xenografts (PDX).
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Affiliation(s)
- Yin Quan Zhao
- Department of Gastric and Colorectal Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China
- School of Life Sciences, Jilin University, Changchun, Jilin Province, 130012, China
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Hong Ri Jin
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Daeho Kim
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Sung Han Jung
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Sheng Liu
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jun Wan
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Ho-Yin Lo
- Synovel Laboratory LLC, Danbury, CT 06811, USA
| | - Xue Qi Fu
- School of Life Sciences, Jilin University, Changchun, Jilin Province, 130012, China
| | - Quan Wang
- Department of Gastric and Colorectal Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China
| | - Chunhai Hao
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Anita C. Bellail
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- HB Therapeutics Inc. Indianapolis, IN 46202, USA
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Youssef A, Mohammed BK, Prasad A, del Aguila A, Bassi G, Yang W, Ulloa L. Splenic SUMO1 controls systemic inflammation in experimental sepsis. Front Immunol 2023; 14:1200939. [PMID: 37520526 PMCID: PMC10374847 DOI: 10.3389/fimmu.2023.1200939] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/22/2023] [Indexed: 08/01/2023] Open
Abstract
Introduction The recent discovery of TAK981(Subasumstat), the first-in-class selective inhibitor of SUMOylation, enables new immune treatments. TAK981 is already in clinical trials to potentiate immunotherapy in metastatic tumors and hematologic malignancies. Cancer patients have more than ten times higher risk of infections, but the effects of TAK981 in sepsis are unknown and previous studies on SUMO in infections are conflicting. Methods We used TAK981 in two sepsis models; polymicrobial peritonitis (CLP) and LPS endotoxemia. Splenectomy was done in both models to study the role of spleen. Western blotting of SUMO-conjugated proteins in spleen lysates was done. Global SUMO1 and SUMO3 knockout mice were used to study the specific SUMO regulation of inflammation in LPS endotoxemia. Splenocytes adoptive transfer was done from SUMO knockouts to wild type mice to study the role of spleen SUMOylation in experimental sepsis. Results and discussion Here, we report that inhibition of SUMOylation with TAK981 improved survival in mild polymicrobial peritonitis by enhancing innate immune responses and peritoneal bacterial clearance. Thus, we focused on the effects of TAK981 on the immune responses to bacterial endotoxin, showing that TAK981 enhanced early TNFα production but did not affect the resolution of inflammation. Splenectomy decreased serum TNFα levels by nearly 60% and TAK981-induced TNFα responses. In the spleen, endotoxemia induced a distinct temporal and substrate specificity for SUMO1 and SUMO2/3, and both were inhibited by TAK981. Global genetic depletion of SUMO1, but not SUMO3, enhanced TNFα production and metabolic acidosis. The transfer of SUMO1-null, but not wild-type, splenocytes into splenectomized wild-type mice exacerbated TNFα production and metabolic acidosis in endotoxemia. Conclusion These results suggest that specific regulation of splenic SUMO1 can modulate immune and metabolic responses to bacterial infection.
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Acuña ML, García-Morin A, Orozco-Sepúlveda R, Ontiveros C, Flores A, Diaz AV, Gutiérrez-Zubiate I, Patil AR, Alvarado LA, Roy S, Russell WK, Rosas-Acosta G. Alternative splicing of the SUMO1/2/3 transcripts affects cellular SUMOylation and produces functionally distinct SUMO protein isoforms. Sci Rep 2023; 13:2309. [PMID: 36759644 PMCID: PMC9911741 DOI: 10.1038/s41598-023-29357-7] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 02/02/2023] [Indexed: 02/11/2023] Open
Abstract
Substantial increases in the conjugation of the main human SUMO paralogs, SUMO1, SUMO2, and SUMO3, are observed upon exposure to different cellular stressors, and such increases are considered important to facilitate cell survival to stress. Despite their critical cellular role, little is known about how the levels of the SUMO modifiers are regulated in the cell, particularly as it relates to the changes observed upon stress. Here we characterize the contribution of alternative splicing towards regulating the expression of the main human SUMO paralogs under normalcy and three different stress conditions, heat-shock, cold-shock, and Influenza A Virus infection. Our data reveal that the normally spliced transcript variants are the predominant mature mRNAs produced from the SUMO genes and that the transcript coding for SUMO2 is by far the most abundant of all. We also provide evidence that alternatively spliced transcripts coding for protein isoforms of the prototypical SUMO proteins, which we refer to as the SUMO alphas, are also produced, and that their abundance and nuclear export are affected by stress in a stress- and cell-specific manner. Additionally, we provide evidence that the SUMO alphas are actively synthesized in the cell as their coding mRNAs are found associated with translating ribosomes. Finally, we provide evidence that the SUMO alphas are functionally different from their prototypical counterparts, with SUMO1α and SUMO2α being non-conjugatable to protein targets, SUMO3α being conjugatable but targeting a seemingly different subset of protein from those targeted by SUMO3, and all three SUMO alphas displaying different cellular distributions from those of the prototypical SUMOs. Thus, alternative splicing appears to be an important contributor to the regulation of the expression of the SUMO proteins and the cellular functions of the SUMOylation system.
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Affiliation(s)
- Myriah L Acuña
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Andrea García-Morin
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Rebeca Orozco-Sepúlveda
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Carlos Ontiveros
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
- Graduate School of Biomedical Sciences, University of Texas Health, San Antonio, TX, 78229, USA
| | - Alejandra Flores
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Arely V Diaz
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | | | - Abhijeet R Patil
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, 19104, USA
| | - Luis A Alvarado
- Biostatistics and Epidemiology Consulting Lab, Texas Tech University Health Sciences Center, El Paso, TX, 79905, USA
| | - Sourav Roy
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA
- Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX, 79968, USA
| | - William K Russell
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Germán Rosas-Acosta
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, 79968, USA.
- Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX, 79968, USA.
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11
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Wang W, Lu J, Yang WC, Spear ED, Michaelis S, Matunis MJ. Analysis of a degron-containing reporter protein GFP-CL1 reveals a role for SUMO1 in cytosolic protein quality control. J Biol Chem 2023; 299:102851. [PMID: 36587767 PMCID: PMC9898758 DOI: 10.1016/j.jbc.2022.102851] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/30/2022] Open
Abstract
Misfolded proteins are recognized and degraded through protein quality control (PQC) pathways, which are essential for maintaining proteostasis and normal cellular functions. Defects in PQC can result in disease, including cancer, cardiovascular disease, and neurodegeneration. The small ubiquitin-related modifiers (SUMOs) were previously implicated in the degradation of nuclear misfolded proteins, but their functions in cytoplasmic PQC are unclear. Here, in a systematic screen of SUMO protein mutations in the budding yeast Saccharomyces cerevisiae, we identified a mutant allele (Smt3-K38A/K40A) that sensitizes cells to proteotoxic stress induced by amino acid analogs. Smt3-K38A/K40A mutant strains also exhibited a defect in the turnover of a soluble PQC model substrate containing the CL1 degron (NES-GFP-Ura3-CL1) localized in the cytoplasm, but not the nucleus. Using human U2OS SUMO1- and SUMO2-KO cell lines, we observed a similar SUMO-dependent pathway for degradation of the mammalian degron-containing PQC reporter protein, GFP-CL1, also only in the cytoplasm but not the nucleus. Moreover, we found that turnover of GFP-CL1 in the cytoplasm was uniquely dependent on SUMO1 but not the SUMO2 paralogue. Additionally, we showed that turnover of GFP-CL1 in the cytoplasm is dependent on the AAA-ATPase, Cdc48/p97. Cellular fractionation studies and analysis of a SUMO1-GFP-CL1 fusion protein revealed that SUMO1 promotes cytoplasmic misfolded protein degradation by maintaining substrate solubility. Collectively, our findings reveal a conserved and previously unrecognized role for SUMO1 in regulating cytoplasmic PQC and provide valuable insights into the roles of sumoylation in PQC-associated diseases.
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Affiliation(s)
- Wei Wang
- Department of Biochemistry and Molecular Biology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Jian Lu
- Department of Biochemistry and Molecular Biology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Wei-Chih Yang
- Department of Biochemistry and Molecular Biology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Eric D Spear
- Department of Cell Biology, Johns Hopkins University, School of Medicine, Baltimore, Maryland, USA
| | - Susan Michaelis
- Department of Cell Biology, Johns Hopkins University, School of Medicine, Baltimore, Maryland, USA
| | - Michael J Matunis
- Department of Biochemistry and Molecular Biology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA.
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12
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Ji M, Chai Z, Chen J, Li G, Li Q, Li M, Ding Y, Lu S, Ju G, Hou J. Insights into the Allosteric Effect of SENP1 Q597A Mutation on the Hydrolytic Reaction of SUMO1 via an Integrated Computational Study. Molecules 2022; 27:molecules27134149. [PMID: 35807394 PMCID: PMC9268427 DOI: 10.3390/molecules27134149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/31/2022] [Revised: 06/23/2022] [Accepted: 06/25/2022] [Indexed: 11/26/2022] Open
Abstract
Small ubiquitin-related modifier (SUMO)-specific protease 1 (SENP1) is a cysteine protease that catalyzes the cleavage of the C-terminus of SUMO1 for the processing of SUMO precursors and deSUMOylation of target proteins. SENP1 is considered to be a promising target for the treatment of hepatocellular carcinoma (HCC) and prostate cancer. SENP1 Gln597 is located at the unstructured loop connecting the helices α4 to α5. The Q597A mutation of SENP1 allosterically disrupts the hydrolytic reaction of SUMO1 through an unknown mechanism. Here, extensive multiple replicates of microsecond molecular dynamics (MD) simulations, coupled with principal component analysis, dynamic cross-correlation analysis, community network analysis, and binding free energy calculations, were performed to elucidate the detailed mechanism. Our MD simulations showed that the Q597A mutation induced marked dynamic conformational changes in SENP1, especially in the unstructured loop connecting the helices α4 to α5 which the mutation site occupies. Moreover, the Q597A mutation caused conformational changes to catalytic Cys603 and His533 at the active site, which might impair the catalytic activity of SENP1 in processing SUMO1. Moreover, binding free energy calculations revealed that the Q597A mutation had a minor effect on the binding affinity of SUMO1 to SENP1. Together, these results may broaden our understanding of the allosteric modulation of the SENP1−SUMO1 complex.
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Affiliation(s)
- Mingfei Ji
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; (M.J.); (G.L.); (Q.L.); (M.L.)
- Department of Urology, Second Affiliated Hospital of Navy Medical University, Shanghai 200433, China; (J.C.); (Y.D.)
| | - Zongtao Chai
- Department of Hepatic Surgery VI, Eastern Hepatobiliary Surgery Hospital, Navy Medical University, Shanghai 200433, China;
| | - Jie Chen
- Department of Urology, Second Affiliated Hospital of Navy Medical University, Shanghai 200433, China; (J.C.); (Y.D.)
| | - Gang Li
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; (M.J.); (G.L.); (Q.L.); (M.L.)
| | - Qiang Li
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; (M.J.); (G.L.); (Q.L.); (M.L.)
| | - Miao Li
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; (M.J.); (G.L.); (Q.L.); (M.L.)
| | - Yelei Ding
- Department of Urology, Second Affiliated Hospital of Navy Medical University, Shanghai 200433, China; (J.C.); (Y.D.)
| | - Shaoyong Lu
- Department of Bioinformatics and Medicinal Chemistry Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China
- Correspondence: (S.L.); (G.J.); (J.H.)
| | - Guanqun Ju
- Department of Urology, Second Affiliated Hospital of Navy Medical University, Shanghai 200433, China; (J.C.); (Y.D.)
- Correspondence: (S.L.); (G.J.); (J.H.)
| | - Jianquan Hou
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China; (M.J.); (G.L.); (Q.L.); (M.L.)
- Department of Urology, Dushuhu Public Hospital Affiliated to Soochow University, Suzhou 215000, China
- Correspondence: (S.L.); (G.J.); (J.H.)
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13
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Ramírez-Jarquín UN, Sharma M, Zhou W, Shahani N, Subramaniam S. Deletion of SUMO1 attenuates behavioral and anatomical deficits by regulating autophagic activities in Huntington disease. Proc Natl Acad Sci U S A 2022; 119:e2107187119. [PMID: 35086928 PMCID: PMC8812691 DOI: 10.1073/pnas.2107187119] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 12/13/2021] [Indexed: 01/18/2023] Open
Abstract
The CAG expansion of huntingtin (mHTT) associated with Huntington disease (HD) is a ubiquitously expressed gene, yet it prominently damages the striatum and cortex, followed by widespread peripheral defects as the disease progresses. However, the underlying mechanisms of neuronal vulnerability are unclear. Previous studies have shown that SUMO1 (small ubiquitin-like modifier-1) modification of mHtt promotes cellular toxicity, but the in vivo role and functions of SUMO1 in HD pathogenesis are unclear. Here, we report that SUMO1 deletion in Q175DN HD-het knockin mice (HD mice) prevented age-dependent HD-like motor and neurological impairments and suppressed the striatal atrophy and inflammatory response. SUMO1 deletion caused a drastic reduction in soluble mHtt levels and nuclear and extracellular mHtt inclusions while increasing cytoplasmic mHtt inclusions in the striatum of HD mice. SUMO1 deletion promoted autophagic activity, characterized by augmented interactions between mHtt inclusions and a lysosomal marker (LAMP1), increased LC3B- and LAMP1 interaction, and decreased interaction of sequestosome-1 (p62) and LAMP1 in DARPP-32-positive medium spiny neurons in HD mice. Depletion of SUMO1 in an HD cell model also diminished the mHtt levels and enhanced autophagy flux. In addition, the SUMOylation inhibitor ginkgolic acid strongly enhanced autophagy and diminished mHTT levels in human HD fibroblasts. These results indicate that SUMO is a critical therapeutic target in HD and that blocking SUMO may ameliorate HD pathogenesis by regulating autophagy activities.
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Affiliation(s)
| | - Manish Sharma
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458
| | - Wuyue Zhou
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458
| | - Neelam Shahani
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458
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14
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Wang B, Wan L, Sun P, Zhang L, Han L, Zhang H, Zhang J, Pu Y, Zhu B. Associations of genetic variation in E3 SUMO-protein ligase CBX4 with noise-induced hearing loss. Hum Mol Genet 2022; 31:2109-2120. [PMID: 35038734 DOI: 10.1093/hmg/ddac006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 11/07/2021] [Revised: 01/02/2022] [Accepted: 01/06/2022] [Indexed: 11/14/2022] Open
Abstract
Noise-induced hearing loss (NIHL) is a multifactorial disease caused by environmental, genetic, and epigenetic variables. SUMOylation is a post-translational modification that regulates biological processes. The objective of this study was to determine the link between genetic variation in the CBX4 and the risk of NIHL. This study applied a case-control design with 588 cases and 582 controls, and the sample was predominantly male (93.76%). The T allele of CBX4 rs1285250 was found to be significantly linked with NIHL (p = 0.002) and showed strong associations in both the codominant and recessive models (TT vs CC, p = 0.005; TT/TC vs CC, p = 0.009). By constructing a mouse model of hearing loss due to noise exposure, changes in hearing thresholds were observed in noise-exposed mice, along with a decrease in the number of cochlear hair cells. Furthermore, noise promotes cochlear hair cell apoptosis by inducing SP1/CBX4 pathway activation. Further functional studies demonstrated that SP1 has an influence on the promoter activity of the CBX4 rs1285250 intron, with the promoter activity of the T allele being higher than that of the C allele. Knockdown of transcription factor SP1 reduced the expression of CBX4 expression and simultaneously reduced apoptosis in HEI-OC1 cells. Together, our findings have shown that CBX4 genetic polymorphism rs1285250 T-allele was associated with increased risk of NIHL and might be used as biomarkers for male workers exposed to noise. Furthermore, we speculate that the CBX4 of rs1285250 T-allele leads to a stronger potential enhancer activity from a predicted gain of stronger SP1 binding.
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Affiliation(s)
- Boshen Wang
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, Jiangsu, China
- Department of Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Liu Wan
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, Jiangsu, China
- Department of Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Peng Sun
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, Jiangsu, China
- Department of Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Ludi Zhang
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, Jiangsu, China
- Department of Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Lei Han
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, Jiangsu, China
- Jiangsu Preventive Medicine Association, Nanjing 210009, Jiangsu, China
| | - Hengdong Zhang
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, Jiangsu, China
- Jiangsu Preventive Medicine Association, Nanjing 210009, Jiangsu, China
| | - Juan Zhang
- Department of Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Yuepu Pu
- Department of Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Baoli Zhu
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210009, Jiangsu, China
- Jiangsu Preventive Medicine Association, Nanjing 210009, Jiangsu, China
- Department of Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 210000, Jiangsu, China
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15
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Ning W, Ma Y, Li S, Wang X, Pan H, Wei C, Zhang S, Bai D, Liu X, Deng Y, Acharya A, Pelekos G, Savkovic V, Li H, Gaus S, Haak R, Schmalz G, Ziebolz D, Ma Y, Xu Y. Shared Molecular Mechanisms between Atherosclerosis and Periodontitis by Analyzing the Transcriptomic Alterations of Peripheral Blood Monocytes. Comput Math Methods Med 2021; 2021:1498431. [PMID: 34899963 PMCID: PMC8664523 DOI: 10.1155/2021/1498431] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 10/12/2021] [Indexed: 01/01/2023]
Abstract
OBJECTIVE This study investigated the nature of shared transcriptomic alterations in PBMs from periodontitis and atherosclerosis to unravel molecular mechanisms underpinning their association. METHODS Gene expression data from PBMs from patients with periodontitis and those with atherosclerosis were each downloaded from the GEO database. Differentially expressed genes (DEGs) in periodontitis and atherosclerosis were identified through differential gene expression analysis. The disease-related known genes related to periodontitis and atherosclerosis each were downloaded from the DisGeNET database. A Venn diagram was constructed to identify crosstalk genes from four categories: DEGs expressed in periodontitis, periodontitis-related known genes, DEGs expressed in atherosclerosis, and atherosclerosis-related known genes. A weighted gene coexpression network analysis (WGCNA) was performed to identify significant coexpression modules, and then, coexpressed gene interaction networks belonging to each significant module were constructed to identify the core crosstalk genes. RESULTS Functional enrichment analysis of significant modules obtained by WGCNA analysis showed that several pathways might play the critical crosstalk role in linking both diseases, including bacterial invasion of epithelial cells, platelet activation, and Mitogen-Activated Protein Kinases (MAPK) signaling. By constructing the gene interaction network of significant modules, the core crosstalk genes in each module were identified and included: for GSE23746 dataset, RASGRP2 in the blue module and VAMP7 and SNX3 in the green module, as well as HMGB1 and SUMO1 in the turquoise module were identified; for GSE61490 dataset, SEC61G, PSMB2, SELPLG, and FIBP in the turquoise module were identified. CONCLUSION Exploration of available transcriptomic datasets revealed core crosstalk genes (RASGRP2, VAMP7, SNX3, HMGB1, SUMO1, SEC61G, PSMB2, SELPLG, and FIBP) and significant pathways (bacterial invasion of epithelial cells, platelet activation, and MAPK signaling) as top candidate molecular linkage mechanisms between atherosclerosis and periodontitis.
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Affiliation(s)
- Wanchen Ning
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yihong Ma
- Department of Neurology, Graduate School of Medical Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Simin Li
- Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Xin Wang
- Department of Neurology, First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Hongying Pan
- School of Dentistry, University of Michigan, 1011 N University Ave, Ann Arbor, MI 48109, USA
| | - Chenxuan Wei
- School of Dentistry, University of Michigan, 1011 N University Ave, Ann Arbor, MI 48109, USA
| | - Shaochuan Zhang
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Dongying Bai
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471003, China
| | - Xiangqiong Liu
- Laboratory of Molecular Cell Biology, Beijing Tibetan Hospital, China Tibetology Research Center, 218 Anwaixiaoguanbeili Street, Chaoyang, Beijing 100029, China
| | - Yupei Deng
- Laboratory of Molecular Cell Biology, Beijing Tibetan Hospital, China Tibetology Research Center, 218 Anwaixiaoguanbeili Street, Chaoyang, Beijing 100029, China
| | - Aneesha Acharya
- Dr D Y Patil Dental College and Hospital, Dr D Y Patil Vidyapeeth, Pimpri, Pune, India
| | - George Pelekos
- Faculty of Dentistry, University of Hong Kong, Hong KongChina
| | - Vuk Savkovic
- Department of Cranio Maxillofacial Surgery, University Clinic Leipzig, Liebigstr. 12, 04103 Leipzig, Germany
| | - Hanluo Li
- Department of Cranio Maxillofacial Surgery, University Clinic Leipzig, Liebigstr. 12, 04103 Leipzig, Germany
| | - Sebastian Gaus
- Department of Cranio Maxillofacial Surgery, University Clinic Leipzig, Liebigstr. 12, 04103 Leipzig, Germany
| | - Rainer Haak
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, 04103 Leipzig, Germany
| | - Gerhard Schmalz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, 04103 Leipzig, Germany
| | - Dirk Ziebolz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, 04103 Leipzig, Germany
| | - Yanbo Ma
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471003, China
| | - Yuzhen Xu
- Department of Rehabilitation, The Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province 271000, China
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Liu Z, Bian X, Gao W, Su J, Ma C, Xiao X, Yu T, Zhang H, Liu X, Fan G. Rg3 promotes the SUMOylation of SERCA2a and corrects cardiac dysfunction in heart failure. Pharmacol Res 2021; 172:105843. [PMID: 34428586 DOI: 10.1016/j.phrs.2021.105843] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 07/05/2021] [Revised: 08/08/2021] [Accepted: 08/18/2021] [Indexed: 01/14/2023]
Abstract
SUMOylation of sarcoplasmic/endoplasmic reticulum Ca2+ ATPase 2a (SERCA2a) has been shown to play a critical role in the abnormal Ca2+ cycle of heart failure. Ginsenoside Rg3 (Rg3), the main active constituent of Panax ginseng, exerts a wide range of pharmacological effects in cardiovascular diseases. However, the effect of Rg3 on abnormal Ca2+ homeostasis in heart failure has not been reported. In this study, we showed a novel role of Rg3 in the abnormal Ca2+ cycle in cardiomyocytes of mice with heart failure. Among mice undergoing transverse aortic constriction, animals that received Rg3 showed improvements in cardiac function and Ca2+ homeostasis, accompanied by increases in the SUMOylation level and SERCA2a activity. In an isoproterenol (ISO)-induced cell hypertrophy model, Rg3 reduced the ISO-induced Ca2+ overload in HL-1 cells. Gene knockout of SUMO1 in mice inhibited the cardioprotective effect of Rg3, and SUMO1 knockout mice that received Rg3 did not exhibit improved Ca2+ homeostasis in cardiomyocytes. Additionally, mutation of the SUMOylation sites of SERCA2a blocked the positive effect of Rg3 on the ISO-induced abnormal Ca2+ cycle in HL-1 cells, and was accompanied by an abnormal endoplasmic reticulum stress response and generation of ROS. Our data demonstrated that Rg3 has a positive effect on the abnormal Ca2+ cycle in the cardiomyocytes of mice with heart failure. SUMO1 is an important factor that mediates the protective effect of Rg3. Our findings suggest that drug intervention by regulating the SUMOylation of SERCA2a can provide a novel therapeutic strategy for the treatment of heart failure.
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Affiliation(s)
- Zhihao Liu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin 300193, China; State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiyun Bian
- Central Laboratory, the Fifth Central Hospital of Tianjin, Tianjin 300450, China; Tianjin Key Laboratory of Epigenetics for Organ Development in Preterm Infants, the Fifth Central Hospital of Tianjin, Tianjin 300450, China
| | - Wenbo Gao
- Central Laboratory, the Fifth Central Hospital of Tianjin, Tianjin 300450, China; Tianjin Key Laboratory of Epigenetics for Organ Development in Preterm Infants, the Fifth Central Hospital of Tianjin, Tianjin 300450, China
| | - Jing Su
- State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Chuanrui Ma
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin 300193, China
| | - Xiaolin Xiao
- Central Laboratory, the Fifth Central Hospital of Tianjin, Tianjin 300450, China; Tianjin Key Laboratory of Epigenetics for Organ Development in Preterm Infants, the Fifth Central Hospital of Tianjin, Tianjin 300450, China
| | - Tian Yu
- Central Laboratory, the Fifth Central Hospital of Tianjin, Tianjin 300450, China; Tianjin Key Laboratory of Epigenetics for Organ Development in Preterm Infants, the Fifth Central Hospital of Tianjin, Tianjin 300450, China
| | - Han Zhang
- State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiaozhi Liu
- Central Laboratory, the Fifth Central Hospital of Tianjin, Tianjin 300450, China; Tianjin Key Laboratory of Epigenetics for Organ Development in Preterm Infants, the Fifth Central Hospital of Tianjin, Tianjin 300450, China.
| | - Guanwei Fan
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin 300193, China; State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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17
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Wu L, Li O, Zhu F, Wang X, Chen P, Cai G, Chen X, Hong Q. Krϋppel-like factor 15 suppresses renal glomerular mesangial cell proliferation via enhancing P53 SUMO1 conjugation. J Cell Mol Med 2021; 25:5691-5706. [PMID: 33949114 PMCID: PMC8184688 DOI: 10.1111/jcmm.16583] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/08/2021] [Accepted: 04/10/2021] [Indexed: 12/12/2022] Open
Abstract
Mesangial cell (MC) proliferation is a key pathological feature in a number of common human renal diseases, including mesangial proliferative nephritis and diabetic nephropathies. Knowledge of MC responses to pathological stimuli is crucial to the understanding of these disease processes. We previously determined that Krϋppel‐like factor 15 (KLF15), a kidney‐enriched zinc‐finger transcription factor, was required for inhibition of MC proliferation. In the present study, we investigated the direct target gene and the underlying mechanism by which KLF15 regulated mesangial proliferation. First, we screened small ubiquitin‐related modifier 1 (SUMO1) as the direct transcriptional target of KLF15 and validated this finding with ChIP‐PCR and luciferase assays. Furthermore, we demonstrated that overexpressing KLF15 or SUMO1 enhanced the stability of P53, which blocked the cell cycle of human renal MCs (HRMCs) and therefore abolished cell proliferation. Conversely, knockdown of SUMO1 in HRMCs, even those overexpressed with KLF15, could not inhibit HRMC proliferation rates and increase SUMOylation of P53. Finally, the results showed that the levels of SUMOylated P53 in the kidney cortices of anti‐Thy 1 model rats were decreased during proliferation periods. These findings reveal the critical mechanism by which KLF15 targets SUMO1 to mediate the proliferation of MCs.
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Affiliation(s)
- Lingling Wu
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People's Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney DiseasesChinese PLA Institute of NephrologyChinese PLA General HospitalBeijingChina
| | - Ou Li
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People's Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney DiseasesChinese PLA Institute of NephrologyChinese PLA General HospitalBeijingChina
| | - Fengge Zhu
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People's Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney DiseasesChinese PLA Institute of NephrologyChinese PLA General HospitalBeijingChina
| | - Xu Wang
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People's Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney DiseasesChinese PLA Institute of NephrologyChinese PLA General HospitalBeijingChina
| | - Pu Chen
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People's Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney DiseasesChinese PLA Institute of NephrologyChinese PLA General HospitalBeijingChina
| | - Guangyan Cai
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People's Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney DiseasesChinese PLA Institute of NephrologyChinese PLA General HospitalBeijingChina
| | - Xiangmei Chen
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People's Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney DiseasesChinese PLA Institute of NephrologyChinese PLA General HospitalBeijingChina
| | - Quan Hong
- Department of NephrologyFirst Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People's Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney DiseasesChinese PLA Institute of NephrologyChinese PLA General HospitalBeijingChina
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Hu S, Liu J, Feng S, Wang Y, Liu H. LncRNA SUMO1P3 acts as a prognostic biomarker and promotes hepatocellular carcinoma growth and metastasis. Aging (Albany NY) 2021; 13:12479-12492. [PMID: 33902004 PMCID: PMC8148505 DOI: 10.18632/aging.202921] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 01/04/2021] [Indexed: 04/10/2023]
Abstract
Long noncoding RNAs (lncRNAs) are involved in the progression of various cancers, including hepatocellular carcinoma (HCC). However, the biological functions of lncRNA small ubiquitin-like modifier 1 pseudogene 3 (SUMO1P3) and the underlying mechanisms remain unclear. In this study, we revealed that SUMO1P3 expression was enhanced in HCC tissues and cell lines, positively associating with tumor size and number, poor differentiation, lymphatic and distant metastasis, TNM stage, and poor prognosis in HCC patients. In vitro assays showed that SUMO1P3 depletion reduced HCC cell viability and proliferation by hindering cyclin D1 expression and Akt phosphorylation. SUMO1P3 knockdown induced HCC cell apoptosis, as indicated by increased Bax and cleaved caspase-3 expression and the decreased Bcl-2 level. SUMO1P3 silencing suppressed HCC cell migration and invasion by increasing epithelial marker E-cadherin expression and decreasing mesenchymal marker vimentin expression, as well as reducing matrix metalloproteinase (MMP)-2 and MMP-9 levels. Consistently, SUMO1P3 depletion in HCC cells retarded tumor growth and lung metastasis in vivo. Overall, these results supported the applicability of SUMO1P3 as a useful predictor of HCC prognosis and a potential therapeutic target for HCC patients.
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Affiliation(s)
- Shu Hu
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Jiancheng Liu
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Shuying Feng
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Yue Wang
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Hongchao Liu
- Medical College, Henan University of Science and Technology, Luoyang 471003, Henan, China
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19
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Lin Y, Wang M, Xiao Z, Jiang Z. Hypoxia activates SUMO-1-HIF-1α signaling pathway to upregulate pro-inflammatory cytokines and permeability in human tonsil epithelial cells. Life Sci 2021; 276:119432. [PMID: 33794253 DOI: 10.1016/j.lfs.2021.119432] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/09/2021] [Accepted: 03/16/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND Adenoid hypertrophy (AH) can cause harmful effects on untreated children, which include mouth breathing, chronic intermittent hypoxia, sleep disordered breathing (SDB), and even some behavioral problems. However, the molecular mechanisms underlying this pathophysiological process have remained poorly understood. METHODS In this study, SUMO was induced silencing and overexpression using RNAi and lentiviral-mediated vector. FITC-Dextran and TEER were performed to examine the role of SUMO in cell permeability. Co-immunoprecipitation (Co-IP) assay was performed to examine the interaction between SUMO1 and HIF-1α. Immunohistochemistry staining was used to examine the expressions of ZO-1, Claudin-1 and occluding respectively. RESULTS We found that a hypoxic condition caused a dramatic upregulation of SUMO-1 expression in a time-dependent manner, a member of the ubiquitin-like protein family. Knockdown of SUMO-1 deeply suppressed the secretions of pro-inflammation cytokines including IL-6, IL-8, and TNF-α, and decreased the permeability of HTECs. Moreover, the HIF-1α inhibitor 2-MeOE2 abolished the function of SUMO-1 in HTECs. Furthermore, results obtained from CO-IP had suggested that SUMO-1 interacted with HIF-1α, and prevented its ubiquitination and degradation in HTECs by sumoylating. Importantly, our data showed that hypoxia-induced inflammation was markedly inhibited by M2 macrophages that possess potent anti-inflammatory function. CONCLUSION Our results suggest that selectively inhibiting the SUMO-1-HIF-1α signaling pathway leads to anti-inflammatory responses in human tonsil epithelial cells, which might be a novel therapeutic approach for managing hypoxia-induced SDB resulting from AH.
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Affiliation(s)
- Yan Lin
- Department of Pediatrics, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Mingjing Wang
- Department of Pediatrics, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Zhen Xiao
- Department of Pediatrics, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China.
| | - Zhiyan Jiang
- Department of Pediatrics, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China.
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Dangoumau A, Marouillat S, Coelho R, Wurmser F, Brulard C, Haouari S, Laumonnier F, Corcia P, Andres CR, Blasco H, Vourc’h P. Dysregulations of Expression of Genes of the Ubiquitin/SUMO Pathways in an In Vitro Model of Amyotrophic Lateral Sclerosis Combining Oxidative Stress and SOD1 Gene Mutation. Int J Mol Sci 2021; 22:ijms22041796. [PMID: 33670299 PMCID: PMC7918082 DOI: 10.3390/ijms22041796] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/24/2021] [Accepted: 02/02/2021] [Indexed: 12/12/2022] Open
Abstract
Protein aggregates in affected motor neurons are a hallmark of amyotrophic lateral sclerosis (ALS), but the molecular pathways leading to their formation remain incompletely understood. Oxidative stress associated with age, the major risk factor in ALS, contributes to this neurodegeneration in ALS. We show that several genes coding for enzymes of the ubiquitin and small ubiquitin-related modifier (SUMO) pathways exhibit altered expression in motor neuronal cells exposed to oxidative stress, such as the CCNF gene mutated in ALS patients. Eleven of these genes were further studied in conditions combining oxidative stress and the expression of an ALS related mutant of the superoxide dismutase 1 (SOD1) gene. We observed a combined effect of these two environmental and genetic factors on the expression of genes, such as Uhrf2, Rbx1, Kdm2b, Ube2d2, Xaf1, and Senp1. Overall, we identified dysregulations in the expression of enzymes of the ubiquitin and SUMO pathways that may be of interest to better understand the pathophysiology of ALS and to protect motor neurons from oxidative stress and genetic alterations.
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Affiliation(s)
- Audrey Dangoumau
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
| | - Sylviane Marouillat
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
| | - Roxane Coelho
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
| | - François Wurmser
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
| | | | - Shanez Haouari
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
| | - Frédéric Laumonnier
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
| | - Philippe Corcia
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
- Service de Neurologie, Centre de Référence sur la SLA, CHRU de Tours, 37000 Tours, France
| | - Christian R. Andres
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
- Service de Biochimie et de Biologie Moléculaire, CHRU de Tours, 37000 Tours, France
| | - Hélène Blasco
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
- Service de Biochimie et de Biologie Moléculaire, CHRU de Tours, 37000 Tours, France
| | - Patrick Vourc’h
- UMR iBrain, Université de Tours, Inserm, 37000 Tours, France; (A.D.); (S.M.); (R.C.); (F.W.); (S.H.); (F.L.); (P.C.); (C.R.A.); (H.B.)
- UTTIL, CHRU de Tours, 37000 Tours, France;
- Service de Biochimie et de Biologie Moléculaire, CHRU de Tours, 37000 Tours, France
- Correspondence: ; Tel.: +33-(0)-234-378-910
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Silveirinha VC, Lin H, Tanifuji S, Mochida S, Cottrell GS, Cimarosti H, Stephens GJ. Ca V2.2 (N-type) voltage-gated calcium channels are activated by SUMOylation pathways. Cell Calcium 2021; 93:102326. [PMID: 33360835 DOI: 10.1016/j.ceca.2020.102326] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/01/2020] [Accepted: 11/23/2020] [Indexed: 11/21/2022]
Abstract
SUMOylation is an important post-translational modification process involving covalent attachment of SUMO (Small Ubiquitin-like MOdifier) protein to target proteins. Here, we investigated the potential for SUMO-1 protein to modulate the function of the CaV2.2 (N-type) voltage-gated calcium channel (VGCC), a protein vital for presynaptic neurotransmitter release. Co-expression of SUMO-1, but not the conjugation-deficient mutant SUMO-1ΔGG, increased heterologously-expressed CaV2.2 Ca2+ current density, an effect potentiated by the conjugating enzyme Ubc9. Expression of sentrin-specific protease (SENP)-1 or Ubc9 alone, had no effect on recombinant CaV2.2 channels. Co-expression of SUMO-1 and Ubc9 caused an increase in whole-cell maximal conductance (Gmax) and a hyperpolarizing shift in the midpoint of activation (V1/2). Mutation of all five CaV2.2 lysine residues to arginine within the five highest probability (>65 %) SUMOylation consensus motifs (SCMs) (construct CaV2.2-Δ5KR), produced a loss-of-function mutant. Mutagenesis of selected individual lysine residues identified K394, but not K951, as a key residue for SUMO-1-mediated increase in CaV2.2 Ca2+ current density. In synaptically-coupled superior cervical ganglion (SCG) neurons, SUMO-1 protein was distributed throughout the cell body, axons and dendrites and presumptive presynaptic terminals, whilst SUMO-1ΔGG protein was largely confined to the cell body, in particular, the nucleus. SUMO-1 expression caused increases in paired excitatory postsynaptic potential (EPSP) ratio at short (20-120 ms) inter-stimuli intervals in comparison to SUMO-1ΔGG, consistent with an increase in residual presynaptic Ca2+ current and an increase in release probability of synaptic vesicles. Together, these data provide evidence for CaV2.2 VGCCs as novel targets for SUMOylation pathways.
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Affiliation(s)
- Vasco C Silveirinha
- School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AJ, UK
| | - Hong Lin
- School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AJ, UK
| | - Shota Tanifuji
- Dept of Physiology, Tokyo Medical University, Tokyo, Japan
| | - Sumiko Mochida
- Dept of Physiology, Tokyo Medical University, Tokyo, Japan
| | - Graeme S Cottrell
- School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AJ, UK
| | - Helena Cimarosti
- School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AJ, UK.
| | - Gary J Stephens
- School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AJ, UK.
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22
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Yu H, Bai Y, Xu C, He X, Liu Q, Ma D, A Y. The tissue expression levels of SUMO1P 3 may be a reliable prognostic biomarker to predict the clinical outcomes in patients with HCC. Medicine (Baltimore) 2020; 99:e21291. [PMID: 33181633 PMCID: PMC7668506 DOI: 10.1097/md.0000000000021291] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Small ubiquitin-like modifier 1 pseudogene 3 (SUMO1P3) is a novel identified long non-coding RNA that is upregulated in several cancers and exerts its oncogenic effects via multiple pathways. SUMO1P3 was significantly higher in HCC tissues and cells than in non-cancerous specimens and normal cells. SUMO1P3 knockdown inhibited the proliferation, migration, and invasion of HCC cells. In the present study, we investigated the clinical significance and prognostic value of SUMO1P3 in HCC.A total of 123 patients were pathologically diagnosed as primary HCC and underwent surgical resection at the Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University from March 2014 to November 2019. The expression differences between HCC tissues and matched normal tissues were analyzed using paired Student's t test. Chi-squared test was used for correlation analysis. Survival curves were plotted using the Kaplan-Meier method and were compared via the log-rank test. The independent prognostic value of SUMO1P3 expression was evaluated using results from univariate and multivariate Cox regression models.As revealed by quantitative RT-PCR analysis, SUMO1P 3 expression level was significantly higher in HCC cancer tissues compared with normal adjacent tissues (mean ± SD: 4.341 ± 1.320 vs 1.000 ± 0.3666, P < .001). The χ test showed that the SUMO1P 3 expression level was significantly associated with tumor size (P = .031), capsular invasion (P = .011), vascular invasion (P = .004), Edmondson-Steiner grade (P = .002), and TNM stage (P = .001). The patients with high SUMO1P 3 expression showed shorter 5-year overall survival than those with low SUMO1P 3 expression (P = .034; log-rank test). Multivariate regression analysis showed that the status of SUMO1P 3 expression was an independent prognostic factor for overall survival (HR = 2.107, 95% CI: 1.478-9.014, P = .031).The expression levels of SUMO1P 3 may be a reliable prognostic biomarker to predict the clinical outcomes in patients with HCC.
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Affiliation(s)
- Henghai Yu
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Guangxi
| | - Yitao Bai
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Guangxi
| | - Chang Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xin He
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Guangxi
| | - Qin Liu
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Guangxi
| | - Dou Ma
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Guangxi
| | - Yongjun A
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Guangxi
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Rabl J. BRCA1-A and BRISC: Multifunctional Molecular Machines for Ubiquitin Signaling. Biomolecules 2020; 10:biom10111503. [PMID: 33142801 PMCID: PMC7692841 DOI: 10.3390/biom10111503] [Citation(s) in RCA: 8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/26/2020] [Accepted: 10/28/2020] [Indexed: 12/12/2022] Open
Abstract
The K63-linkage specific deubiquitinase BRCC36 forms the core of two multi-subunit deubiquitination complexes: BRCA1-A and BRISC. BRCA1-A is recruited to DNA repair foci, edits ubiquitin signals on chromatin, and sequesters BRCA1 away from the site of damage, suppressing homologous recombination by limiting resection. BRISC forms a complex with metabolic enzyme SHMT2 and regulates the immune response, mitosis, and hematopoiesis. Almost two decades of research have revealed how BRCA1-A and BRISC use the same core of subunits to perform very distinct biological tasks.
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Affiliation(s)
- Julius Rabl
- Cryo-EM Knowledge Hub, ETH Zürich, Otto-Stern-Weg 3, HPM C51, 8093 Zürich, Switzerland
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24
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Karpiyevich M, Artavanis-Tsakonas K. Ubiquitin-Like Modifiers: Emerging Regulators of Protozoan Parasites. Biomolecules 2020; 10:E1403. [PMID: 33022940 PMCID: PMC7600729 DOI: 10.3390/biom10101403] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 09/28/2020] [Accepted: 10/01/2020] [Indexed: 12/18/2022] Open
Abstract
Post-translational protein regulation allows for fine-tuning of cellular functions and involves a wide range of modifications, including ubiquitin and ubiquitin-like modifiers (Ubls). The dynamic balance of Ubl conjugation and removal shapes the fates of target substrates, in turn modulating various cellular processes. The mechanistic aspects of Ubl pathways and their biological roles have been largely established in yeast, plants, and mammalian cells. However, these modifiers may be utilised differently in highly specialised and divergent organisms, such as parasitic protozoa. In this review, we explore how these parasites employ Ubls, in particular SUMO, NEDD8, ATG8, ATG12, URM1, and UFM1, to regulate their unconventional cellular physiology. We discuss emerging data that provide evidence of Ubl-mediated regulation of unique parasite-specific processes, as well as the distinctive features of Ubl pathways in parasitic protozoa. We also highlight the potential to leverage these essential regulators and their cognate enzymatic machinery for development of therapeutics to protect against the diseases caused by protozoan parasites.
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25
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Maillet S, Fernandez J, Decourcelle M, El Koulali K, Blanchet FP, Arhel NJ, Maarifi G, Nisole S. Daxx Inhibits HIV-1 Reverse Transcription and Uncoating in a SUMO-Dependent Manner. Viruses 2020; 12:v12060636. [PMID: 32545337 PMCID: PMC7354551 DOI: 10.3390/v12060636] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/05/2020] [Accepted: 06/09/2020] [Indexed: 02/07/2023] Open
Abstract
Death domain-associated protein 6 (Daxx) is a multifunctional, ubiquitously expressed and highly conserved chaperone protein involved in numerous cellular processes, including apoptosis, transcriptional repression, and carcinogenesis. In 2015, we identified Daxx as an antiretroviral factor that interfered with HIV-1 replication by inhibiting the reverse transcription step. In the present study, we sought to unravel the molecular mechanism of Daxx-mediated restriction and, in particular, to identify the protein(s) that Daxx targets in order to achieve its antiviral activity. First, we show that the SUMO-interacting motif (SIM) located at the C-terminus of the protein is strictly required for Daxx to inhibit HIV-1 reverse transcription. By performing a quantitative proteomic screen combined with classical biochemical analyses, we found that Daxx associated with incoming HIV-1 cores through a SIM-dependent interaction with cyclophilin A (CypA) and capsid (CA). Daxx was found to reside within a multiprotein complex associated with viral capsids, also containing TNPO3, TRIM5α, and TRIM34. Given the well-known influence of these cellular factors on the stability of HIV-1 cores, we investigated the effect of Daxx on the cytoplasmic fate of incoming cores and found that Daxx prevented HIV-1 uncoating in a SIM-dependent manner. Altogether, our findings suggest that, by recruiting TNPO3, TRIM5α, and TRIM34 and possibly other proteins onto incoming HIV-1 cores through a SIM-dependent interaction with CA-bound CypA, Daxx increases their stability, thus preventing uncoating and reverse transcription. Our study uncovers a previously unknown function of Daxx in the early steps of HIV-1 infection and further illustrates how reverse transcription and uncoating are two tightly interdependent processes.
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Affiliation(s)
- Sarah Maillet
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, 34090 Montpellier, France; (S.M.); (J.F.); (F.P.B.); (N.J.A.); (G.M.)
| | - Juliette Fernandez
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, 34090 Montpellier, France; (S.M.); (J.F.); (F.P.B.); (N.J.A.); (G.M.)
| | - Mathilde Decourcelle
- BCM, Université de Montpellier, CNRS, INSERM, 34090 Montpellier, France; (M.D.); (K.E.K.)
| | - Khadija El Koulali
- BCM, Université de Montpellier, CNRS, INSERM, 34090 Montpellier, France; (M.D.); (K.E.K.)
| | - Fabien P. Blanchet
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, 34090 Montpellier, France; (S.M.); (J.F.); (F.P.B.); (N.J.A.); (G.M.)
| | - Nathalie J. Arhel
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, 34090 Montpellier, France; (S.M.); (J.F.); (F.P.B.); (N.J.A.); (G.M.)
| | - Ghizlane Maarifi
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, 34090 Montpellier, France; (S.M.); (J.F.); (F.P.B.); (N.J.A.); (G.M.)
| | - Sébastien Nisole
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, 34090 Montpellier, France; (S.M.); (J.F.); (F.P.B.); (N.J.A.); (G.M.)
- Correspondence:
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Tay MLI, Pek JW. SON protects nascent transcripts from unproductive degradation by counteracting DIP1. PLoS Genet 2019; 15:e1008498. [PMID: 31730657 PMCID: PMC6881055 DOI: 10.1371/journal.pgen.1008498] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/27/2019] [Accepted: 10/28/2019] [Indexed: 11/18/2022] Open
Abstract
Gene expression involves the transcription and splicing of nascent transcripts through the removal of introns. In Drosophila, a double-stranded RNA binding protein Disco-interacting protein 1 (DIP1) targets INE-1 stable intronic sequence RNAs (sisRNAs) for degradation after splicing. How nascent transcripts that also contain INE-1 sequences escape degradation remains unknown. Here we observe that these nascent transcripts can also be bound by DIP1 but the Drosophila homolog of SON (Dsn) protects them from unproductive degradation in ovaries. Dsn localizes to the satellite body where active decay of INE-1 sisRNAs by DIP1 occurs. Dsn is a repressor of DIP1 posttranslational modifications (primarily sumoylation) that are assumed to be required for efficient DIP1 activity. Moreover, the pre-mRNA destabilization caused by Dsn depletion is rescued in DIP1 or Sumo heterozygous mutants, suggesting that Dsn is a negative regulator of DIP1. Our results reveal that under normal circumstances nascent transcripts are susceptible to DIP1-mediated degradation, however intronic sequences are protected by Dsn until intron excision has taken place.
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Affiliation(s)
| | - Jun Wei Pek
- Temasek Life Sciences Laboratory, Singapore, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore
- * E-mail:
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Winczura A, Appanah R, Tatham MH, Hay RT, De Piccoli G. The S phase checkpoint promotes the Smc5/6 complex dependent SUMOylation of Pol2, the catalytic subunit of DNA polymerase ε. PLoS Genet 2019; 15:e1008427. [PMID: 31765407 PMCID: PMC6876773 DOI: 10.1371/journal.pgen.1008427] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 05/21/2019] [Accepted: 09/16/2019] [Indexed: 12/31/2022] Open
Abstract
Replication fork stalling and accumulation of single-stranded DNA trigger the S phase checkpoint, a signalling cascade that, in budding yeast, leads to the activation of the Rad53 kinase. Rad53 is essential in maintaining cell viability, but its targets of regulation are still partially unknown. Here we show that Rad53 drives the hyper-SUMOylation of Pol2, the catalytic subunit of DNA polymerase ε, principally following replication forks stalling induced by nucleotide depletion. Pol2 is the main target of SUMOylation within the replisome and its modification requires the SUMO-ligase Mms21, a subunit of the Smc5/6 complex. Moreover, the Smc5/6 complex co-purifies with Pol ε, independently of other replisome components. Finally, we map Pol2 SUMOylation to a single site within the N-terminal catalytic domain and identify a SUMO-interacting motif at the C-terminus of Pol2. These data suggest that the S phase checkpoint regulate Pol ε during replication stress through Pol2 SUMOylation and SUMO-binding ability.
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Affiliation(s)
- Alicja Winczura
- Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Rowin Appanah
- Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Michael H. Tatham
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, United Kingdom
| | - Ronald T. Hay
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, United Kingdom
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Cabrita MA, Renart LI, Lau R, Pratt MAC. Intrinsically Disordered SRC-3/AIB1 Protein Undergoes Homeostatic Nuclear Extrusion by Nuclear Budding While Ectopic Expression Induces Nucleophagy. Cells 2019; 8:cells8101278. [PMID: 31635050 PMCID: PMC6830083 DOI: 10.3390/cells8101278] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/12/2019] [Accepted: 10/17/2019] [Indexed: 11/16/2022] Open
Abstract
SRC-3/AIB1 (Amplified in Breast Cancer-1) is a nuclear receptor coactivator for the estrogen receptor in breast cancer cells. It is also an intrinsically disordered protein when not engaged with transcriptional binding partners and degraded upon transcriptional coactivation. Given the amplified expression of SRC-3 in breast cancers, the objective of this study was to determine how increasing SRC-3 protein levels are regulated in MCF-7 breast cancer cells. We found that endogenous SRC-3 was expelled from the nucleus in vesicle-like spheres under normal growth conditions suggesting that this form of nuclear exclusion of SRC-3 is a homeostatic mechanism for regulating nuclear SRC-3 protein. Only SRC-3 not associated with CREB-binding protein (CBP) was extruded from the nucleus. We found that overexpression in MCF-7 cells results in aneuploid senescence and cell death with frequent formation of nuclear aggregates which were consistently juxtaposed to perinuclear microtubules. Transfected SRC-3 was SUMOylated and caused redistribution of nuclear promyelocytic leukemia (PML) bodies and perturbation of the nuclear membrane lamin B1, hallmarks of nucleophagy. Increased SRC-3 protein-induced autophagy and resulted in SUMO-1 localization to the nuclear membrane and formation of protrusions variously containing SRC-3 and chromatin. Aspects of SRC-3 overexpression and toxicity were recapitulated following treatment with clinically relevant agents that stabilize SRC-3 in breast cancer cells. We conclude that amplified SRC-3 levels have major impacts on nuclear protein quality control pathways and may mark cancer cells for sensitivity to protein stabilizing therapeutics.
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Affiliation(s)
- Miguel A Cabrita
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - L Isabel Renart
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Rosanna Lau
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - M A Christine Pratt
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada.
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Ma CH, Su BY, Maciaszek A, Fan HF, Guga P, Jayaram M. A Flp-SUMO hybrid recombinase reveals multi-layered copy number control of a selfish DNA element through post-translational modification. PLoS Genet 2019; 15:e1008193. [PMID: 31242181 PMCID: PMC6594588 DOI: 10.1371/journal.pgen.1008193] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 02/11/2019] [Accepted: 05/13/2019] [Indexed: 12/30/2022] Open
Abstract
Mechanisms for highly efficient chromosome-associated equal segregation, and for maintenance of steady state copy number, are at the heart of the evolutionary success of the 2-micron plasmid as a stable multi-copy extra-chromosomal selfish DNA element present in the yeast nucleus. The Flp site-specific recombination system housed by the plasmid, which is central to plasmid copy number maintenance, is regulated at multiple levels. Transcription of the FLP gene is fine-tuned by the repressor function of the plasmid-coded partitioning proteins Rep1 and Rep2 and their antagonist Raf1, which is also plasmid-coded. In addition, the Flp protein is regulated by the host’s post-translational modification machinery. Utilizing a Flp-SUMO fusion protein, which functionally mimics naturally sumoylated Flp, we demonstrate that the modification signals ubiquitination of Flp, followed by its proteasome-mediated degradation. Furthermore, reduced binding affinity and cooperativity of the modified Flp decrease its association with the plasmid FRT (Flp recombination target) sites, and/or increase its dissociation from them. The resulting attenuation of strand cleavage and recombination events safeguards against runaway increase in plasmid copy number, which is deleterious to the host—and indirectly—to the plasmid. These results have broader relevance to potential mechanisms by which selfish genomes minimize fitness conflicts with host genomes by holding in check the extra genetic load they pose. Plasmids of budding yeasts, exemplified by the 2-micron plasmid of Saccharomyces cerevisiae, and mammalian papilloma and gammaherpes viruses typify eukaryotic extra-chromosomal selfish DNA elements. The plasmid and the viral episomes, despite the long evolutionary divergence of their hosts, share striking similarities in lifestyles. These include the ability to segregate to daughter cells by hitchhiking on chromosomes and to switch from cell cycle regulated replication to iterative replication for copy number maintenance. While selfish elements, including those integrated into chromosomes, rely on their hosts’ genetic potential for long-term survival, their genetic load is carefully regulated to minimize fitness conflicts with the hosts. Our study focuses on the Flp site-specific recombinase, which is central to the copy number control of the 2-micron plasmid and whose steady state levels are regulated through transcriptional control by plasmid coded proteins and through post-translational modification by the host’s sumoylation machinery. We demonstrate that sumoylation, in addition, attenuates the catalytic activity of Flp by diminishing its DNA binding affinity and inter-monomer cooperativity, providing another layer of protection against runaway increase in plasmid copy number. Population control by self-imposed and host-mediated mechanisms is likely a general strategy among selfish elements to ensure nearly conflict-free coexistence with host genomes.
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Affiliation(s)
- Chien-Hui Ma
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX, United States of America
| | - Bo-Yu Su
- Department of Life Sciences and Institute of Genome Sciences, Biophotonics and Molecular Imaging Research Center, National Yang-Ming University, Taipei City, Taiwan
| | - Anna Maciaszek
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Department of Bioorganic Chemistry, Lodz, Poland
| | - Hsiu-Fang Fan
- Department of Life Sciences and Institute of Genome Sciences, Biophotonics and Molecular Imaging Research Center, National Yang-Ming University, Taipei City, Taiwan
| | - Piotr Guga
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Department of Bioorganic Chemistry, Lodz, Poland
| | - Makkuni Jayaram
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX, United States of America
- * E-mail:
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Wei J, Li C, Zhang X, Fan L, Wei S, Qin Q. Fish SUMO3 functions as a critical antiviral molecule against iridovirus and nodavirus. Fish Shellfish Immunol 2019; 86:1088-1095. [PMID: 30593901 DOI: 10.1016/j.fsi.2018.12.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 09/28/2018] [Revised: 12/07/2018] [Accepted: 12/23/2018] [Indexed: 06/09/2023]
Abstract
Protein SUMOylation (SUMO is small ubiquitin-related modifier) is a dynamic process that is strictly regulated under physiological and pathological conditions. We previously cloned and characterized two SUMO homologue genes (EcSUMO1 and EcSUMO2) from orange-spotted grouper (Epinephelus coioides). In the present study, the SUMO3 homologue from E. coioides (EcSUMO3) was cloned and its possible roles in fish immunity were analyzed. The open reading frame of EcSUMO3 contains 285 base pairs encoding a 94 amino acid protein with a predicted molecular mass of 10.73 kDa. The protein sequence of EcSUMO3 revealed similar domains with mammals, including the UBQ (ubiquitin-like proteins) domain, the hydrophobic surface, the Ulp1-Smt3 interaction sites, a VKTE motif and the C-terminal Gly residues. EcSUMO3 shares 46.83% and 89.58% identity with EcSUMO1 and EcSUMO2, respectively, and it shares 94%, 98%, and 98% identity with SUMO3 from Oreochromis niloticus, Danio rerio, and Homo sapiens, respectively. Quantitative real-time polymerase chain reaction analysis indicated that EcSUMO3 was constitutively expressed in all of the analyzed tissues in healthy grouper. EcSUMO3 expression levels were remarkably (p < 0.01) up-regulated in grouper spleen (GS) cells in response to stimulation with red-spotted grouper nervous necrosis virus (RGNNV) and Singapore grouper iridovirus (SGIV). EcSUMO3 was distributed in both the cytoplasm and nucleus in GS cells. EcSUMO3 enhanced SGIV and RGNNV replication during viral infection in vitro. These results are important for better understanding of the SUMO pathway in fish and provide insights into the regulatory mechanism of viral infection in E. coioides under farmed conditions.
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Affiliation(s)
- Jingguang Wei
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China.
| | - Chen Li
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Xin Zhang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Lanfen Fan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Shina Wei
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266000, PR China.
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Osunsade A, Prescott NA, Hebert JM, Ray DM, Jmeian Y, Lorenz IC, David Y. A Robust Method for the Purification and Characterization of Recombinant Human Histone H1 Variants. Biochemistry 2019; 58:171-176. [PMID: 30585724 PMCID: PMC6541009 DOI: 10.1021/acs.biochem.8b01060] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Higher order compaction of the eukaryotic genome is key to the regulation of all DNA-templated processes, including transcription. This tightly controlled process involves the formation of mononucleosomes, the fundamental unit of chromatin, packaged into higher order architectures in an H1 linker histone-dependent process. While much work has been done to delineate the precise mechanism of this event in vitro and in vivo, major gaps still exist, primarily due to a lack of molecular tools. Specifically, there has never been a successful purification and biochemical characterization of all human H1 variants. Here we present a robust method to purify H1 and illustrate its utility in the purification of all somatic variants and one germline variant. In addition, we performed a first ever side-by-side biochemical comparison, which revealed a gradient of nucleosome binding affinities and compaction capabilities. These data provide new insight into H1 redundancy and lay the groundwork for the mechanistic investigation of disease-driving mutations.
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Affiliation(s)
- Adewola Osunsade
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY
- Tri-Institutional PhD Program in Chemical Biology, New York, NY
| | - Nicholas A. Prescott
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY
- Tri-Institutional PhD Program in Chemical Biology, New York, NY
| | - Jakob M. Hebert
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY
- Tri-Institutional PhD Program in Chemical Biology, New York, NY
| | - Devin M. Ray
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY
- Tri-Institutional PhD Program in Chemical Biology, New York, NY
- Tri-Institutional MD-PhD Program, New York, NY
| | - Yazen Jmeian
- Tri-Institutional Therapeutics Discovery Institute, New York, NY
| | - Ivo C. Lorenz
- Tri-Institutional Therapeutics Discovery Institute, New York, NY
| | - Yael David
- Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY
- Tri-Institutional PhD Program in Chemical Biology, New York, NY
- Department of Pharmacology, Weill Cornell Medical College, New York, NY
- Department of Physiology, Biophysics and Systems Biology, Weill Cornell Medical College, New York, NY
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Abstract
Duplication of the genome poses one of the most significant threats to genetic integrity, cellular fitness, and organismal health. Therefore, numerous mechanisms have evolved that maintain replication fork stability in the face of DNA damage and allow faithful genome duplication. The fission yeast BRCT-domain-containing protein Brc1, and its budding yeast orthologue Rtt107, has emerged as a "hub" factor that integrates multiple replication fork protection mechanisms. Notably, the cofactors and pathways through which Brc1, Rtt107, and their human orthologue (PTIP) act have appeared largely distinct. This either represents true evolutionary functional divergence, or perhaps an incomplete genetic and biochemical analysis of each protein. In this regard, we recently showed that like Rtt107, Brc1 supports key functions of the Smc5-Smc6 complex, including its recruitment into DNA repair foci, chromatin association, and SUMO ligase activity. Furthermore, fission yeast cells lacking the Nse5-Nse6 genome stability factor were found to exhibit defects in Smc5-Smc6 function, similar to but more severe than those in cells lacking Brc1. Here, we place these findings in context with the known functions of Brc1, Rtt107, and Smc5-Smc6, present data suggesting a role for acetylation in Smc5-Smc6 chromatin loading, and discuss wider implications for genome stability.
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Affiliation(s)
- Martina Oravcová
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Michael N Boddy
- Department of Molecular Medicine, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA.
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Bibi N, Rashid S, Nicholson J, Malloy M, O'Neill R, Blake D, Hupp T. An Integrative "Omics" Approach, for Identification of Bona Fides PLK1 Associated Biomarker in Esophageal Adenocarcinoma. Curr Cancer Drug Targets 2019; 19:742-755. [PMID: 30747067 DOI: 10.2174/1568009619666190211113722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 05/16/2018] [Revised: 11/30/2018] [Accepted: 01/20/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The rapid expansion of genome-wide profiling techniques offers the opportunity to utilize various types of information collected in the study of human health and disease. Overexpression of Polo like kinase 1 (PLK1) is associated with esophageal adenocarcinoma (OAC), however biological functions and molecular targets of PLK1 in OAC are still unknown. OBJECTIVES Here we performed integrative analysis of two "omics" data sources to reveal high-level interactions of PLK1 associated with OAC. METHODS Initially, quantitative gene expression (RPKM) was measured from transcriptomics data set of four OAC patients. In parallel, alteration in phosphorylation levels was evaluated in the proteomics data set (mass spectrometry) in OAC cell line (PLK1 inhibited). Next, two "omics" data sets were integrated and through comprehensive analysis possible true PLK1 targets that may serve as OAC biomarkers were assembled. RESULTS Through experimental validation, small ubiquitin-related modifier 1 (SUMO1) and heat shock protein beta-1 (HSPB1) were identified as novel phosphorylation targets of PLK1. Consequently in vivo, in situ and in silico experiments clearly demonstrated the interaction of PLK1 with putative novel targets (SUMO1 and HSPB1). CONCLUSION Identification of a PLK1 dependent biosignature in OAC with high confidence in two omics levels proven the robustness and efficacy of our integrative approach.
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Affiliation(s)
- Nousheen Bibi
- Department of Bioinformatics, Shaheed Benazir Bhutto Women University, Peshawer, Pakistan
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sajid Rashid
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Mark Malloy
- Australian Proteome Analysis Facility, Macquarie University, Sydney, New South Wales 2109, Australia
| | - Rob O'Neill
- Edinburgh Cancer Research Center, University of Edinburgh, United Kingdom
| | | | - Ted Hupp
- Edinburgh Cancer Research Center, University of Edinburgh, United Kingdom
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Rosa MTG, Almeida DM, Pires IS, da Rosa Farias D, Martins AG, da Maia LC, de Oliveira AC, Saibo NJM, Oliveira MM, Abreu IA. Insights into the transcriptional and post-transcriptional regulation of the rice SUMOylation machinery and into the role of two rice SUMO proteases. BMC Plant Biol 2018; 18:349. [PMID: 30541427 PMCID: PMC6291987 DOI: 10.1186/s12870-018-1547-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 11/20/2018] [Indexed: 05/21/2023]
Abstract
BACKGROUND SUMOylation is an essential eukaryotic post-translation modification that, in plants, regulates numerous cellular processes, ranging from seed development to stress response. Using rice as a model crop plant, we searched for potential regulatory points that may influence the activity of the rice SUMOylation machinery genes. RESULTS We analyzed the presence of putative cis-acting regulatory elements (CREs) within the promoter regions of the rice SUMOylation machinery genes and found CREs related to different cellular processes, including hormone signaling. We confirmed that the transcript levels of genes involved in target-SUMOylation, containing ABA- and GA-related CREs, are responsive to treatments with these hormones. Transcriptional analysis in Nipponbare (spp. japonica) and LC-93-4 (spp. indica), showed that the transcript levels of all studied genes are maintained in the two subspecies, under normal growth. OsSUMO3 is an exceptional case since it is expressed at low levels or is not detectable at all in LC-93-4 roots and shoots, respectively. We revealed post-transcriptional regulation by alternative splicing (AS) for all genes studied, except for SUMO coding genes, OsSIZ2, OsOTS3, and OsELS2. Some AS forms have the potential to alter protein domains and catalytic centers. We also performed the molecular and phenotypic characterization of T-DNA insertion lines of some of the genes under study. Knockouts of OsFUG1 and OsELS1 showed increased SUMOylation levels and non-overlapping phenotypes. The fug1 line showed a dwarf phenotype, and significant defects in fertility, seed weight, and panicle architecture, while the els1 line showed early flowering and decreased plant height. We suggest that OsELS1 is an ortholog of AtEsd4, which was also supported by our phylogenetic analysis. CONCLUSIONS Overall, we provide a comprehensive analysis of the rice SUMOylation machinery and discuss possible effects of the regulation of these genes at the transcriptional and post-transcriptional level. We also contribute to the characterization of two rice SUMO proteases, OsELS1 and OsFUG1.
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Affiliation(s)
- Margarida T. G. Rosa
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB-UNL), Av. da República, 2780-157 Oeiras, Portugal
| | - Diego M. Almeida
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB-UNL), Av. da República, 2780-157 Oeiras, Portugal
- IBET, Av. da República, 2780-157 Oeiras, Portugal
- Laboratoire de Biochimie et Physiologie Moléculaire des Plantes (BPMP), Institut National de la Recherche Agronomique (INRA), Université de Montpellier (UM), Montpellier, France
| | - Inês S. Pires
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB-UNL), Av. da República, 2780-157 Oeiras, Portugal
- Frontiers Media SA, Avenue du Tribunal-Fédéral 34, CH-1015 Lausanne, Switzerland
| | - Daniel da Rosa Farias
- Plant Genomics and Breeding Center, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS Brazil
| | - Alice G. Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB-UNL), Av. da República, 2780-157 Oeiras, Portugal
| | - Luciano Carlos da Maia
- Plant Genomics and Breeding Center, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS Brazil
| | - António Costa de Oliveira
- Plant Genomics and Breeding Center, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, RS Brazil
| | - Nelson J. M. Saibo
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB-UNL), Av. da República, 2780-157 Oeiras, Portugal
| | - M. Margarida Oliveira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB-UNL), Av. da República, 2780-157 Oeiras, Portugal
| | - Isabel A. Abreu
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB-UNL), Av. da República, 2780-157 Oeiras, Portugal
- IBET, Av. da República, 2780-157 Oeiras, Portugal
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Hua Z, Doroodian P, Vu W. Contrasting duplication patterns reflect functional diversities of ubiquitin and ubiquitin-like protein modifiers in plants. Plant J 2018; 95:296-311. [PMID: 29738099 DOI: 10.1111/tpj.13951] [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: 08/15/2017] [Revised: 03/29/2018] [Accepted: 04/30/2018] [Indexed: 06/08/2023]
Abstract
Ubiquitin (Ub) and Ub-like proteins, collectively forming the ubiquiton family, regulate nearly all aspects of cellular processes via post-translational modifications. Studies devoted to specific members suggested a large expansion of this family in plants; however, a lack of systematic analysis hinders the comparison of individual members at both evolutionary history and functional divergence levels, which may provide new insight into biological functions. In this work, we first retrieved a total of 5856 members of 17 known ubiquiton subfamilies in 50 plant genomes by searching both prior annotations and missing loci in each genome. We then applied this list to analyze the duplication history of major ubiquiton subfamilies in plants. We show that autophagy-related protein 8 (ATG8), membrane-anchored Ub-fold (MUB), small Ub-like modifier (SUMO) and Ub loci encode 88% of the plant ubiquiton family. Although whole genome duplications (WGDs) significantly expanded the family, we discovered contrasting duplication patterns both in species and in subfamilies. Within the family, the ATG8 and MUB members were primarily duplicated through WGDs, whereas a significant number of Ub and SUMO loci were generated through retroposition and tandem duplications, respectively. Although Ub coding regions are highly conserved in plants, promoter activity analysis demonstrated lineage-specific expression patterns of polyUb genes in Oryza sativa (rice) and Arabidopsis, confirming their retroposition origin. Based on the theory of dosage balance constraints, our study suggests that ubiquiton members duplicated through WGDs play crucial roles in plants, and that the regulatory pathways involving ATG8 and MUB are more conserved than those controlled by Ub and SUMO.
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Affiliation(s)
- Zhihua Hua
- Department of Environmental and Plant Biology, Ohio University, Athens, OH, 45701, USA
- Interdisciplinary Program in Molecular and Cellular Biology, Ohio University, Athens, OH, 45701, USA
| | - Paymon Doroodian
- Department of Environmental and Plant Biology, Ohio University, Athens, OH, 45701, USA
| | - William Vu
- Department of Environmental and Plant Biology, Ohio University, Athens, OH, 45701, USA
- Department of Chemistry and Biochemistry, Ohio University, Athens, OH, 45701, USA
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Verma V, Croley F, Sadanandom A. Fifty shades of SUMO: its role in immunity and at the fulcrum of the growth-defence balance. Mol Plant Pathol 2018; 19:1537-1544. [PMID: 29024335 PMCID: PMC6637990 DOI: 10.1111/mpp.12625] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 10/05/2017] [Accepted: 10/06/2017] [Indexed: 05/10/2023]
Abstract
The sessile nature of plants requires them to cope with an ever-changing environment. Effective adaptive responses require sophisticated cellular mechanisms at the post-transcriptional and post-translational levels. Post-translational modification by small ubiquitin-like modifier (SUMO) proteins is emerging as a key player in these adaptive responses. SUMO conjugation can rapidly change the overall fate of target proteins by altering their stability or interaction with partner proteins or DNA. SUMOylation entails an enzyme cascade that leads to the activation, conjugation and ligation of SUMO to lysine residues of target proteins. In addition to their SUMO processing activities, SUMO proteases also possess de-conjugative activity capable of cleaving SUMO from target proteins, providing reversibility and buffering to the pathway. These proteases play critical roles in the maintenance of the SUMO machinery in equilibrium. We hypothesize that SUMO proteases provide the all-important substrate specificity within the SUMO system. Furthermore, we provide an overview of the role of SUMO in plant innate immunity. SUMOylation also overlaps with multiple growth-promoting and defence-related hormone signalling pathways, and hence is pivotal for the maintenance of the growth-defence balance. This review aims to highlight the intricate molecular mechanisms utilized by SUMO to regulate plant defence and to stabilize the growth-defence equilibrium.
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Affiliation(s)
- Vivek Verma
- Department of BiosciencesDurham UniversityDurham DH1 3LEUK
| | - Fenella Croley
- Department of BiosciencesDurham UniversityDurham DH1 3LEUK
| | - Ari Sadanandom
- Department of BiosciencesDurham UniversityDurham DH1 3LEUK
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37
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Abstract
Spliceosomal proteins have been revealed as SUMO conjugation targets. Moreover, we have reported that many of these are in a SUMO-conjugated form when bound to a pre-mRNA substrate during a splicing reaction. We demonstrated that SUMOylation of Prp3 (PRPF3), a component of the U4/U6 di-snRNP, is required for U4/U6•U5 tri-snRNP formation and/or recruitment to active spliceosomes. Expanding upon our previous results, we have shown that the splicing factor SRSF1 stimulates SUMO conjugation to several spliceosomal proteins. Given the relevance of the splicing process, as well as the complex and dynamic nature of its governing machinery, the spliceosome, the molecular mechanisms that modulate its function represent an attractive topic of research. We posit that SUMO conjugation could represent a way of modulating spliceosome assembly and thus, splicing efficiency. How cycles of SUMOylation/de-SUMOylation of spliceosomal proteins become integrated throughout the highly choreographed spliceosomal cycle awaits further investigation.
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Affiliation(s)
- Berta Pozzi
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA- CONICET); Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Ciudad Universitaria, Buenos Aires, Argentina
| | - Pablo Mammi
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA- CONICET); Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Ciudad Universitaria, Buenos Aires, Argentina
| | - Laureano Bragado
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA- CONICET); Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Ciudad Universitaria, Buenos Aires, Argentina
| | - Luciana E. Giono
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA- CONICET); Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Ciudad Universitaria, Buenos Aires, Argentina
| | - Anabella Srebrow
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA- CONICET); Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Ciudad Universitaria, Buenos Aires, Argentina
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Bernstock JD, Ye D, Smith JA, Lee YJ, Gessler FA, Yasgar A, Kouznetsova J, Jadhav A, Wang Z, Pluchino S, Zheng W, Simeonov A, Hallenbeck JM, Yang W. Quantitative high-throughput screening identifies cytoprotective molecules that enhance SUMO conjugation via the inhibition of SUMO-specific protease (SENP)2. FASEB J 2018; 32:1677-1691. [PMID: 29146736 PMCID: PMC5892725 DOI: 10.1096/fj.201700711r] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [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: 07/25/2017] [Accepted: 11/06/2017] [Indexed: 12/18/2022]
Abstract
The development of novel neuroprotective treatments for acute stroke has been fraught with failures, which supports the view of ischemic brain damage as a highly complex multifactorial process. Post-translational modifications such as small ubiquitin-like modifier (SUMO)ylation have emerged as critical molecular regulatory mechanisms in states of both homeostasis and ischemic stress, as evidenced by our previous work. Accordingly, the clinical significance of the selective control of the global SUMOylation process has become apparent in studies of ischemic pathobiology and pathophysiology. Herein, we describe a process capable of identifying and characterizing small molecules with the potential of targeting the SUMO system through inhibition of SUMO deconjugation in an effort to develop novel stroke therapies.-Bernstock, J. D., Ye, D., Smith, J. A., Lee, Y.-J., Gessler, F. A., Yasgar, A., Kouznetsova, J., Jadhav, A., Wang, Z., Pluchino, S., Zheng, W., Simeonov, A., Hallenbeck, J. M., Yang, W. Quantitative high-throughput screening identifies cytoprotective molecules that enhance SUMO-conjugation via the inhibition of SUMO-specific protease (SENP)2.
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Affiliation(s)
- Joshua D. Bernstock
- Stroke Branch, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health, Bethesda, Maryland, USA
- Division of Stem Cell Neurobiology, Department of Clinical Neurosciences, Wellcome Trust-Medical Research Council Stem Cell Institute and National Institute of Health Research Biomedical Research Centre, University of Cambridge, United Kingdom
- UAB School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Daniel Ye
- Stroke Branch, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health, Bethesda, Maryland, USA
| | - Jayden A. Smith
- Division of Stem Cell Neurobiology, Department of Clinical Neurosciences, Wellcome Trust-Medical Research Council Stem Cell Institute and National Institute of Health Research Biomedical Research Centre, University of Cambridge, United Kingdom
| | - Yang-Ja Lee
- Stroke Branch, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health, Bethesda, Maryland, USA
| | - Florian A. Gessler
- Division of Stem Cell Neurobiology, Department of Clinical Neurosciences, Wellcome Trust-Medical Research Council Stem Cell Institute and National Institute of Health Research Biomedical Research Centre, University of Cambridge, United Kingdom
| | - Adam Yasgar
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, USA; and
| | - Jennifer Kouznetsova
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, USA; and
| | - Ajit Jadhav
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, USA; and
| | - Zhuoran Wang
- Center for Perioperative Organ Protection, Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Stefano Pluchino
- Division of Stem Cell Neurobiology, Department of Clinical Neurosciences, Wellcome Trust-Medical Research Council Stem Cell Institute and National Institute of Health Research Biomedical Research Centre, University of Cambridge, United Kingdom
| | - Wei Zheng
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, USA; and
| | - Anton Simeonov
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, USA; and
| | - John M. Hallenbeck
- Stroke Branch, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health, Bethesda, Maryland, USA
| | - Wei Yang
- Center for Perioperative Organ Protection, Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, USA
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Abstract
One of the few proteins that have SUMO E3 ligase activity is the 358 kDa nucleoporin RanBP2 (Nup358). While small fragments of RanBP2 can stimulate SUMOylation in vitro, the physiologically relevant E3 ligase is a stable multi-subunit complex comprised of RanBP2, SUMOylated RanGAP1, and Ubc9. Here, we provide a detailed protocol to in vitro reconstitute the RanBP2 SUMO E3 ligase complex. With the exception of RanBP2, reconstitution involves untagged full-length proteins. We describe the bacterial expression and purification of all complex components, namely an 86 kDa His-tagged RanBP2 fragment, the SUMO E2-conjugating enzyme Ubc9, RanGAP1, and SUMO1, and we provide a protocol for quantitative SUMOylation of RanGAP1. Finally, we present details for the assembly and final purification of the catalytically active RanBP2/RanGAP1*SUMO1/Ubc9 complex.
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Affiliation(s)
- Tobias Ritterhoff
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ - ZMBH Alliance, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany
- Department of Biochemistry, University of Washington, Seattle, Washington, USA
| | - Hrishikesh Das
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ - ZMBH Alliance, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany
| | - Yuqing Hao
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ - ZMBH Alliance, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany
| | - Volkan Sakin
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ - ZMBH Alliance, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany
- Department of Infectious Diseases and Virology, University Hospital of Heidelberg, Heidelberg, Germany
| | - Annette Flotho
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ - ZMBH Alliance, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany
| | - Andreas Werner
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ - ZMBH Alliance, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany.
| | - Frauke Melchior
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ - ZMBH Alliance, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany.
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Cheng TM, Chin YT, Ho Y, Chen YR, Yang YN, Yang YC, Shih YJ, Lin TI, Lin HY, Davis PJ. Resveratrol induces sumoylated COX-2-dependent anti-proliferation in human prostate cancer LNCaP cells. Food Chem Toxicol 2017; 112:67-75. [PMID: 29242151 DOI: 10.1016/j.fct.2017.12.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 10/23/2017] [Revised: 11/30/2017] [Accepted: 12/08/2017] [Indexed: 11/18/2022]
Abstract
Cyclooxygenase (COX)-2 has been implicated in cancer development. However, resveratrol-induced nuclear accumulation of COX-2 enhances p53-dependent anti-proliferation in different types of cancers. Treatment with resveratrol leads to phosphorylation and nuclear translocation of mitogen-activated protein kinase (ERK1/2), and accumulation of nuclear COX-2 to complex with pERK1/2 and p53. The consequence is Ser-15 phosphorylation of p53 (pSer15-p53), and induction of anti-proliferation in cancer cells. We investigated the mechanisms by which resveratrol-inducible COX-2 facilitates p53-dependent anti-proliferation in prostate cancer LNCaP cells. Resveratrol treatment caused nuclear accumulation and complexing of ERK1/2, pSer15-p53 and COX-2 which was activated ERK1/2-dependent. Knockdown of SUMO-1 by shRNA also reduced nuclear accumulation of COX-2. Inhibition of nuclear accumulation by the COX-2 specific inhibitor, NS-398, inhibited co-localization of nuclear COX-2 and SUMO-1. Similar results were observed in the PD98059-treated cells. Finally, inhibition of SUMO-1 expression also reduced resveratrol-induced expression of pro-apoptotic genes but increased the expression of proliferative genes. In summary, these results demonstrate that inducible COX-2 associates with phosphorylated ERK1/2 to induce the phosphorylation of Ser-15 in p53 and then complexes with p53 and SUMO-1 which binds to p53-responsive pro-apoptotic genes to enhance their expression. The inhibition of COX-2 expression and activity significantly blocks the pro-apoptotic effect of resveratrol.
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Affiliation(s)
- Tsai-Mu Cheng
- College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
| | - Yu-Tang Chin
- College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan.
| | - Yih Ho
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan.
| | - Yi-Ru Chen
- College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan.
| | - Yung-Ning Yang
- Division of Pediatric Infectious Disease, Department of Pediatrics, E-Da Hospital/I-Shou University, Kaohsiung 84001, Taiwan.
| | - Yu-Chen Yang
- Joint Biobank, Office of Human Research, Taipei Medical University, Taipei 11031, Taiwan.
| | - Ya-Jang Shih
- College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan.
| | - Ting-I Lin
- Department of Pediatrics, E-DA Hospital, I-Shou University, Kaohsiung 84001, Taiwan.
| | - Hung-Yun Lin
- College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Taipei Cancer Center, Taipei Medical University, Taipei 11031, Taiwan; Traditional Herbal Medicine Research Center of Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan; Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Albany, NY 12208, USA.
| | - Paul J Davis
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Albany, NY 12208, USA; Albany Medical College, Albany, NY 12208, USA.
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Meyerson NR, Zhou L, Guo YR, Zhao C, Tao YJ, Krug RM, Sawyer SL. Nuclear TRIM25 Specifically Targets Influenza Virus Ribonucleoproteins to Block the Onset of RNA Chain Elongation. Cell Host Microbe 2017; 22:627-638.e7. [PMID: 29107643 PMCID: PMC6309188 DOI: 10.1016/j.chom.2017.10.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [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: 01/14/2017] [Revised: 07/21/2017] [Accepted: 09/26/2017] [Indexed: 11/20/2022]
Abstract
TRIM25 is an E3 ubiquitin ligase that activates RIG-I to promote the antiviral interferon response. The NS1 protein from all strains of influenza A virus binds TRIM25, although not all virus strains block the interferon response, suggesting alternative mechanisms for TRIM25 action. Here we present a nuclear role for TRIM25 in specifically restricting influenza A virus replication. TRIM25 inhibits viral RNA synthesis through a direct mechanism that is independent of its ubiquitin ligase activity and the interferon pathway. This activity can be inhibited by the viral NS1 protein. TRIM25 inhibition of viral RNA synthesis results from its binding to viral ribonucleoproteins (vRNPs), the structures containing individual viral RNA segments, the viral polymerase, and multiple viral nucleoproteins. TRIM25 binding does not inhibit initiation of capped-RNA-primed viral mRNA synthesis by the viral polymerase. Rather, the onset of RNA chain elongation is inhibited because TRIM25 prohibits the movement of RNA into the polymerase complex.
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Affiliation(s)
- Nicholas R Meyerson
- BioFrontiers Institute, Department of Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO 80303, USA
| | - Ligang Zhou
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, University of Texas at Austin, Austin, TX 78712, USA
| | - Yusong R Guo
- Department of BioSciences, Rice University, Houston, TX 77005, USA
| | - Chen Zhao
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, University of Texas at Austin, Austin, TX 78712, USA
| | - Yizhi J Tao
- Department of BioSciences, Rice University, Houston, TX 77005, USA
| | - Robert M Krug
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, University of Texas at Austin, Austin, TX 78712, USA.
| | - Sara L Sawyer
- BioFrontiers Institute, Department of Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO 80303, USA.
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42
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Abstract
In this issue of Molecular Cell, Wei et al. (2017) report how a DNA translocase uses SUMO as a cue to save Top2 from ubiquitin-mediated degradation and to minimize DNA breaks, thus providing insights into the SUMO and ubiquitin interplay in genome maintenance.
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Affiliation(s)
- Nalini Dhingra
- Molecular Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Xiaolan Zhao
- Molecular Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
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Guo J, Chen D, Gao X, Hu X, Zhou Y, Wu C, Wang Y, Chen J, Pei R, Chen X. Protein Inhibitor of Activated STAT2 Restricts HCV Replication by Modulating Viral Proteins Degradation. Viruses 2017; 9:v9100285. [PMID: 28973998 PMCID: PMC5691636 DOI: 10.3390/v9100285] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 09/27/2017] [Accepted: 09/27/2017] [Indexed: 02/07/2023] Open
Abstract
Hepatitis C virus (HCV) replication in cells is controlled by many host factors. In this report, we found that protein inhibitor of activated STAT2 (PIAS2), which is a small ubiquitin-like modifier (SUMO) E3 ligase, restricted HCV replication. During infection, HCV core, NS3 and NS5A protein expression, as well as the viral assembly and budding efficiency were enhanced when endogenous PIAS2 was knocked down, whereas exogenous PIAS2 expression decreased HCV core, NS3, and NS5A protein expression and the viral assembly and budding efficiency. PIAS2 did not influence the viral entry, RNA replication, and protein translation steps of the viral life cycle. When expressed together with SUMO1, PIAS2 reduced the HCV core, NS3 and NS5A protein levels expressed from individual plasmids through the proteasome pathway in a ubiquitin-independent manner; the stability of these proteins in the HCV infectious system was enhanced when PIAS2 was knocked down. Furthermore, we found that the core was SUMOylated at amino acid K78, and PIAS2 enhanced the SUMOylation level of the core.
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Affiliation(s)
- Jing Guo
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Dan Chen
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xiaoxiao Gao
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xue Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Yuan Zhou
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Chunchen Wu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Yun Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Jizheng Chen
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Rongjuan Pei
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Xinwen Chen
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China.
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Gilistro E, de Turris V, Damizia M, Verrico A, Moroni S, De Santis R, Rosa A, Lavia P. Importin-β and CRM1 control a RANBP2 spatiotemporal switch essential for mitotic kinetochore function. J Cell Sci 2017; 130:2564-2578. [PMID: 28600321 DOI: 10.1242/jcs.197905] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 09/26/2016] [Accepted: 06/05/2017] [Indexed: 12/30/2022] Open
Abstract
Protein conjugation with small ubiquitin-related modifier (SUMO) is a post-translational modification that modulates protein interactions and localisation. RANBP2 is a large nucleoporin endowed with SUMO E3 ligase and SUMO-stabilising activity, and is implicated in some cancer types. RANBP2 is part of a larger complex, consisting of SUMO-modified RANGAP1, the GTP-hydrolysis activating factor for the GTPase RAN. During mitosis, the RANBP2-SUMO-RANGAP1 complex localises to the mitotic spindle and to kinetochores after microtubule attachment. Here, we address the mechanisms that regulate this localisation and how they affect kinetochore functions. Using proximity ligation assays, we find that nuclear transport receptors importin-β and CRM1 play essential roles in localising the RANBP2-SUMO-RANGAP1 complex away from, or at kinetochores, respectively. Using newly generated inducible cell lines, we show that overexpression of nuclear transport receptors affects the timing of RANBP2 localisation in opposite ways. Concomitantly, kinetochore functions are also affected, including the accumulation of SUMO-conjugated topoisomerase-IIα and stability of kinetochore fibres. These results delineate a novel mechanism through which nuclear transport receptors govern the functional state of kinetochores by regulating the timely deposition of RANBP2.
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Affiliation(s)
- Eugenia Gilistro
- CNR National Research Council of Italy, Institute of Molecular Biology and Pathology (IBPM), ℅ Department of Biology and Biotechnology, Sapienza Università di Roma, Via degli Apuli 4, 00185 Rome, Italy
| | - Valeria de Turris
- Istituto Italiano di Tecnologia, Center for Life Nanoscience@Sapienza, Viale Regina Elena 291, 00161 Rome, Italy
| | - Michela Damizia
- CNR National Research Council of Italy, Institute of Molecular Biology and Pathology (IBPM), ℅ Department of Biology and Biotechnology, Sapienza Università di Roma, Via degli Apuli 4, 00185 Rome, Italy
| | - Annalisa Verrico
- CNR National Research Council of Italy, Institute of Molecular Biology and Pathology (IBPM), ℅ Department of Biology and Biotechnology, Sapienza Università di Roma, Via degli Apuli 4, 00185 Rome, Italy
| | - Sara Moroni
- CNR National Research Council of Italy, Institute of Molecular Biology and Pathology (IBPM), ℅ Department of Biology and Biotechnology, Sapienza Università di Roma, Via degli Apuli 4, 00185 Rome, Italy
| | - Riccardo De Santis
- Istituto Italiano di Tecnologia, Center for Life Nanoscience@Sapienza, Viale Regina Elena 291, 00161 Rome, Italy
- Department of Biology and Biotechnology 'Charles Darwin', Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Alessandro Rosa
- Istituto Italiano di Tecnologia, Center for Life Nanoscience@Sapienza, Viale Regina Elena 291, 00161 Rome, Italy
- Department of Biology and Biotechnology 'Charles Darwin', Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Patrizia Lavia
- CNR National Research Council of Italy, Institute of Molecular Biology and Pathology (IBPM), ℅ Department of Biology and Biotechnology, Sapienza Università di Roma, Via degli Apuli 4, 00185 Rome, Italy
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Brun S, Abella N, Berciano MT, Tapia O, Jaumot M, Freire R, Lafarga M, Agell N. SUMO regulates p21Cip1 intracellular distribution and with p21Cip1 facilitates multiprotein complex formation in the nucleolus upon DNA damage. PLoS One 2017; 12:e0178925. [PMID: 28582471 PMCID: PMC5459497 DOI: 10.1371/journal.pone.0178925] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 01/24/2017] [Accepted: 05/22/2017] [Indexed: 01/06/2023] Open
Abstract
We previously showed that p21Cip1 transits through the nucleolus on its way from the nucleus to the cytoplasm and that DNA damage inhibits this transit and induces the formation of p21Cip1-containing intranucleolar bodies (INoBs). Here, we demonstrate that these INoBs also contain SUMO-1 and UBC9, the E2 SUMO-conjugating enzyme. Furthermore, whereas wild type SUMO-1 localized in INoBs, a SUMO-1 mutant, which is unable to conjugate with proteins, does not, suggesting the presence of SUMOylated proteins at INoBs. Moreover, depletion of the SUMO-conjugating enzyme UBC9 or the sumo hydrolase SENP2 changed p21Cip1 intracellular distribution. In addition to SUMO-1 and p21Cip1, cell cycle regulators and DNA damage checkpoint proteins, including Cdk2, Cyclin E, PCNA, p53 and Mdm2, and PML were also detected in INoBs. Importantly, depletion of UBC9 or p21Cip1 impacted INoB biogenesis and the nucleolar accumulation of the cell cycle regulators and DNA damage checkpoint proteins following DNA damage. The impact of p21Cip1 and SUMO-1 on the accumulation of proteins in INoBs extends also to CRM1, a nuclear exportin that is also important for protein translocation from the cytoplasm to the nucleolus. Thus, SUMO and p21Cip1 regulate the transit of proteins through the nucleolus, and that disruption of nucleolar export by DNA damage induces SUMO and p21Cip1 to act as hub proteins to form a multiprotein complex in the nucleolus.
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Affiliation(s)
- Sonia Brun
- Departament Biomedicina, Universitat de Barcelona, IDIBAPS, Barcelona, Spain
| | - Neus Abella
- Departament Biomedicina, Universitat de Barcelona, IDIBAPS, Barcelona, Spain
| | - Maria T. Berciano
- Departamento de Anatomía y Biología Celular, Universidad de Cantabria-IDIVAL, Santander, Spain
| | - Olga Tapia
- Departamento de Anatomía y Biología Celular, Universidad de Cantabria-IDIVAL, Santander, Spain
| | - Montserrat Jaumot
- Departament Biomedicina, Universitat de Barcelona, IDIBAPS, Barcelona, Spain
| | - Raimundo Freire
- Unidad de Investigación, Hospital Universitario de Canarias, Instituto de Tecnologías Biomédicas, Tenerife, Spain
| | - Miguel Lafarga
- Departamento de Anatomía y Biología Celular, Universidad de Cantabria-IDIVAL, Santander, Spain
| | - Neus Agell
- Departament Biomedicina, Universitat de Barcelona, IDIBAPS, Barcelona, Spain
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Wang J, Wen S, Zhao R, Qi J, Liu Z, Li W, An J, Wood C, Wang Y. Covalent conjugation of the equine infectious anemia virus Gag with SUMO. Biochem Biophys Res Commun 2017; 486:712-719. [PMID: 28342872 DOI: 10.1016/j.bbrc.2017.03.103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 03/02/2017] [Accepted: 03/21/2017] [Indexed: 02/02/2023]
Abstract
The conjugation of small ubiquitin-like modifier (SUMO) to the target protein, namely, SUMOylation, is involved in the regulation of many important biological events including host-pathogen interaction. Some viruses have evolved to exploit the host SUMOylation machinery to modify their own protein. Retroviral Gag protein plays critical roles in the viral life cycle. The HIV-1 p6 and the Moloney murine leukemia virus CA have been reported to be conjugated with SUMO. In this study, we report for the first time, to our knowledge, the covalent conjugation of equine infectious anemia virus (EIAV) Gag with SUMO. The C-terminal p9 domain of Gag is a main target for SUMOylation and SUMO is attached to multiple sites of p9, including K30 whose mutation abolished p9 SUMOylation completely. The SUMOylation of p9, but not the p9-K30 mutant, was also detected in equine fibroblastic cells ATCC® CCL-57™. Ubc9 and its C93 residue are indispensable for the SUMOylation of p9. Using confocal microscopy, it is found that EIAV Gag localizes primarily, if not exclusively, in the cytoplasm of the cell and the co-localization of EIAV Gag with Ubc9 was observed. Our findings that EIAV Gag is SUMOylated at p9-K30, together with previous findings on the defects of p9-K30 mutant in viral DNA translocation from cytoplasm to the nucleus, suggests that SUMOylation of Gag may be involved in such functions.
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Affiliation(s)
- Jinzhong Wang
- TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, China; Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, 23 Hongda Street, TEDA, Tianjin 300457, China; Tianjin Key Laboratory of Microbial Functional Genomics, 23 Hongda Street, TEDA, Tianjin 300457, China
| | - Shuping Wen
- TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, China
| | - Rui Zhao
- TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, China
| | - Jing Qi
- TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, China
| | - Zhao Liu
- TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, China
| | - Weiwei Li
- TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, China
| | - Jing An
- TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, China
| | - Charles Wood
- Nebraska Center for Virology and School of Biological Sciences, University of Nebraska, Lincoln, NE 68583, USA.
| | - Ying Wang
- TEDA Institute of Biological Sciences and Biotechnology, Nankai University, 23 Hongda Street, TEDA, Tianjin 300457, China; Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, 23 Hongda Street, TEDA, Tianjin 300457, China; Tianjin Key Laboratory of Microbial Functional Genomics, 23 Hongda Street, TEDA, Tianjin 300457, China.
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Abstract
ERK1 and ERK2 (ERK1/2) are the primary effector kinases of the RAS-RAF-MEK-ERK signaling pathway. A variety of substrates and regulatory partners associate with ERK1/2 through distinct D-peptide- and DEF-docking sites on their kinase domains. While understanding of D-peptides that bind to ERK1/2 has become increasingly clear over the last decade, only more recently have structures of proteins interacting with other binding sites on ERK1/2 become available. PEA-15 is a 130-residue ERK1/2 regulator that engages both the D-peptide- and DEF-docking sites of ERK kinases, and directly sequesters the ERK2 activation loop in various different phosphorylation states. Here we describe the methods used to derive crystallization-grade complexes of ERK2-PEA-15, which may also be adapted for other regulators that associate with the activation loop of ERK1/2.
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Affiliation(s)
- Johannes F Weijman
- Biochemistry Department, Otago School of Medical Sciences, University of Otago, 56, 710 Cumberland St., Dunedin, 9054, New Zealand
| | - Stefan J Riedl
- Cell Death and Survival Networks Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Peter D Mace
- Biochemistry Department, Otago School of Medical Sciences, University of Otago, 56, 710 Cumberland St., Dunedin, 9054, New Zealand.
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Ma Y, Yu J, Lin J, Wu S, Li S, Wang J. High Efficient Expression, Purification, and Functional Characterization of Native Human Epidermal Growth Factor in Escherichia coli. Biomed Res Int 2016; 2016:3758941. [PMID: 27766259 PMCID: PMC5059520 DOI: 10.1155/2016/3758941] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 09/05/2016] [Indexed: 12/04/2022]
Abstract
Human epidermal growth factor (hEGF) is a small, mitotic growth polypeptide that promotes the proliferation of various cells and is widely applied in clinical practices. However, high efficient expression of native hEGF in Escherichia coli has not been successful, since three disulfide bonds in monomer hEGF made it unable to fold into correct 3D structure using in vivo system. To tackle this problem, we fused Mxe GyrA intein (Mxe) at the C-terminal of hEGF followed by small ubiquitin-related modifier (SUMO) and 10x His-tag to construct a chimeric protein hEGF-Mxe-SUMO-H10. The fusion protein was highly expressed at the concentration of 281 mg/L and up to 59.5% of the total cellular soluble proteins. The fusion protein was purified by affinity chromatography and 29.4 mg/L of native hEGF can be released by thiol induced N-terminal cleavage without any proteases. The mitotic activity in Balb/c 3T3 cells is proliferated by commercial and recombinant hEGF measured with methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay which indicated that recombinant hEGF protein stimulates the cell proliferation similar to commercial protein. This study significantly improved the yield and reduced the cost of hEGF in the recombinant E. coli system and could be a better strategy to produce native hEGF for pharmaceutical development.
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Affiliation(s)
- Yi Ma
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Jieying Yu
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Jinglian Lin
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Shaomin Wu
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Shan Li
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
- Guangdong Province Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou 510006, China
| | - Jufang Wang
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
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Nie X, Yu S, Qiu M, Wang X, Wang Y, Bai Y, Zhang F, Wang S. Aspergillus flavus SUMO Contributes to Fungal Virulence and Toxin Attributes. J Agric Food Chem 2016; 64:6772-6782. [PMID: 27532332 DOI: 10.1021/acs.jafc.6b02199] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Small ubiquitin-like modifiers (SUMOs) can be reversibly attached to target proteins in a process known as SUMOylation, and this process influences several important eukaryotic cell events. However, little is known regarding SUMO or SUMOylation in Aspergillus flavus. Here, we identified a novel member of the SUMO family in A. flavus, AfSumO, and validated the existence of SUMOylation in this pathogenic filamentous fungus. We investigated the roles of AfsumO in A. flavus by determining the effects of AfsumO mutations on the growth phenotype, stress response, conidia and sclerotia production, aflatoxin biosynthesis, and pathogenicity to seeds, and we found that SUMOylation plays a role in fungal virulence and toxin attributes. Taken together, these results not only reveal potential mechanisms of fungal virulence and toxin attributes in A. flavus but also provide a novel approach for promising new control strategies of this fungal pathogen.
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Affiliation(s)
- Xinyi Nie
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, School of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
| | - Song Yu
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, School of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
| | - Mengguang Qiu
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, School of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
| | - Xiuna Wang
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, School of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
| | - Yu Wang
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, School of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
| | - Youhuang Bai
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, School of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
| | - Feng Zhang
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, School of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
| | - Shihua Wang
- Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, School of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002, China
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50
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Apostolov A, Litim-Mecheri I, Oravecz A, Goepp M, Kirstetter P, Marchal P, Ittel A, Mauvieux L, Chan S, Kastner P. Sumoylation Inhibits the Growth Suppressive Properties of Ikaros. PLoS One 2016; 11:e0157767. [PMID: 27315244 PMCID: PMC4912065 DOI: 10.1371/journal.pone.0157767] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 11/18/2015] [Accepted: 06/03/2016] [Indexed: 01/01/2023] Open
Abstract
The Ikaros transcription factor is a tumor suppressor that is also important for lymphocyte development. How post-translational modifications influence Ikaros function remains partially understood. We show that Ikaros undergoes sumoylation in developing T cells that correspond to mono-, bi- or poly-sumoylation by SUMO1 and/or SUMO2/3 on three lysine residues (K58, K240 and K425). Sumoylation occurs in the nucleus and requires DNA binding by Ikaros. Sumoylated Ikaros is less effective than unsumoylated forms at inhibiting the expansion of murine leukemic cells, and Ikaros sumoylation is abundant in human B-cell acute lymphoblastic leukemic cells, but not in healthy peripheral blood leukocytes. Our results suggest that sumoylation may be important in modulating the tumor suppressor function of Ikaros.
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Affiliation(s)
- Apostol Apostolov
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Isma Litim-Mecheri
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Attila Oravecz
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Marie Goepp
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Peggy Kirstetter
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Patricia Marchal
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Antoine Ittel
- Laboratoire d’Hématologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Laboratoire d’Hématologie Cellulaire, EA 3430, Institut d’Hématologie et d’Immunologie, Faculté de Médecine de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Laurent Mauvieux
- Laboratoire d’Hématologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Laboratoire d’Hématologie Cellulaire, EA 3430, Institut d’Hématologie et d’Immunologie, Faculté de Médecine de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Susan Chan
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
| | - Philippe Kastner
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964, CNRS UMR 7104, Université de Strasbourg, 67404 Illkirch, France
- Faculté de Médecine, Université de Strasbourg, Strasbourg, France
- * E-mail:
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