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https://www.readbyqxmd.com/read/28682440/usp22-down-regulation-facilitates-human-retinoblastoma-cell-aging-and-apoptosis-via-inhibiting-tert-p53-pathway
#1
D Zhou, P Liu, D-W Sun, Z-J Chen, J Hu, S-M Peng, Y-L Liu
OBJECTIVE: Retinoblastoma is the most common malignant intraocular tumor in childhood, and still lacks effective treatment. The immortality of tumor cell can be attributed to elevated telomerase activity, which has been considered as tumor marker and treatment target. USP22 is one of the important targets for inhibiting tumor growth, but clear illustration regarding its effects of telomerase, tumor cell immortality and retinoblastoma cell aging or apoptosis via suppressing TERT/P53 signal pathway remains to be elusive...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28634076/lncrna-hulc-promotes-the-growth-of-hepatocellular-carcinoma-cells-via-stabilizing-cox-2-protein
#2
Haojun Xiong, Bo Li, Jintao He, Yijun Zeng, Yan Zhang, Fengtian He
Highly upregulated in liver cancer (HULC), a lncRNA overexpressed in hepatocellular carcinoma (HCC), has been demonstrated to be involved in the carcinogenesis and progression of HCC. However, the mechanisms of HULC promoting the abnormal growth of HCC cells are still not well elucidated. In the present study, we for the first time demonstrated that HULC promoted the growth of HCC cells through elevating COX-2 protein. Moreover, the study of the corresponding mechanism by which HULC upregulated COX-2 showed that HULC enhanced the level of ubiquitin-specific peptidase 22 (USP22), which decreased ubiquitin-mediated degradation of COX-2 protein by removing the conjugated polyubiquitin chains from COX-2 and finally stabilized COX2 protein...
August 26, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28567015/usp22-induces-cisplatin-resistance-in-lung-adenocarcinoma-by-regulating-%C3%AE-h2ax-mediated-dna-damage-repair-and-ku70-bax-mediated-apoptosis
#3
Aman Wang, Zhen Ning, Chang Lu, Wei Gao, Jinxiao Liang, Qiu Yan, Guang Tan, Jiwei Liu
Resistance to platinum-based chemotherapy is one of the most important reasons for treatment failure in advanced non-small cell lung cancer, but the underlying mechanism is extremely complex and unclear. The present study aimed to investigate the correlation of ubiquitin-specific peptidase 22 (USP22) with acquired resistance to cisplatin in lung adenocarcinoma. In this study, we found that overexpression of USP22 could lead to cisplatin resistance in A549 cells. USP22 and its downstream proteins γH2AX and Sirt1 levels are upregulated in the cisplatin- resistant A549/CDDP cell line...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28472782/identification-of-deubiquitinase-targets-of-isothiocyanates-using-silac-assisted-quantitative-mass-spectrometry
#4
Ann P Lawson, Daniel W Bak, D Alexander Shannon, Marcus J C Long, Tushara Vijaykumar, Runhan Yu, Farid El Oualid, Eranthie Weerapana, Lizbeth Hedstrom
Cruciferous vegetables such as broccoli and kale have well documented chemopreventative and anticancer effects that are attributed to the presence of isothiocyanates (ITCs). ITCs modulate the levels of many oncogenic proteins, but the molecular mechanisms of ITC action are not understood. We previously reported that phenethyl isothiocyanate (PEITC) inhibits two deubiquitinases (DUBs), USP9x and UCH37. DUBs regulate many cellular processes and DUB dysregulation is linked to the pathogenesis of human diseases including cancer, neurodegeneration, and inflammation...
April 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28445968/usp22-knockdown-enhanced-chemosensitivity-of-hepatocellular-carcinoma-cells-to-5-fu-by-up-regulation-of-smad4-and-suppression-of-akt
#5
Jing Zhang, Nan Luo, Yu Tian, Jiazhi Li, Xiaozhou Yang, Huimin Yin, Congshu Xiao, Jie Sheng, Yang Li, Bo Tang, Rongkuan Li
USP22, a member of the deubiquitinases (DUBs) family, is known to be a key subunit of the human Spt-Ada-Gcn5 acetyltransferase (hSAGA) transcriptional cofactor complex. Within hSAGA, USP22 removes ubiquitin from histone proteins, thus regulating the transcription and expression of downstream genes. USP22 plays important roles in many cancers; however, its effect and the mechanism underlying HCC chemoresistance remain unclear. In the present study, we found that USP22 was highly expressed in chemoresistant HCC tissues and cells and was correlated with the prognosis of HCC patients who received chemotherapy...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427243/usp22-drives-colorectal-cancer-invasion-and-metastasis-via-epithelial-mesenchymal-transition-by-activating-ap4
#6
Yongmin Li, Yanmei Yang, Jingwen Li, He Liu, Fuxun Chen, Bingyang Li, Binbin Cui, Yanlong Liu
Ubiquitin specific peptidase 22 (USP22), a putative cancer stem cell marker, is overexpressed in liver metastases of colorectal cancer (CRC). However, the mechanism by which USP22 promotes CRC metastasis remains largely unknown. Here, we report that USP22 and AP4 are simultaneously overexpressed during TGF-β1-induced CRC cell epithelial-mesenchymal transition (EMT). USP22 up-regulation enhances CRC cell migration and invasion and EMT-related marker and AP4 expression, but these effects are partly blocked by AP4 knockdown...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28417539/usp22-mediates-the-multidrug-resistance-of-hepatocellular-carcinoma-via-the-sirt1-akt-mrp1-signaling-pathway
#7
Sunbin Ling, Jie Li, Qiaonan Shan, Haojiang Dai, Di Lu, Xue Wen, Penghong Song, Haiyang Xie, Lin Zhou, Jimin Liu, Xiao Xu, Shusen Zheng
Drug treatments for hepatocellular carcinoma (HCC) often fail because of multidrug resistance (MDR). The mechanisms of MDR are complex but cancer stem cells (CSCs), which are able to self-renew and differentiate, have recently been shown to be involved. The deubiquitinating enzyme ubiquitin-specific protease 22 (USP22) is a marker for CSCs. This study aimed to elucidate the role of USP22 in MDR of HCC and the underlying mechanisms. Using in vitro and in vivo assays, we found that modified USP22 levels were responsible for the altered drug-resistant phenotype of BEL7402 and BEL/FU cells...
June 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28415621/usp22-maintains-gastric-cancer-stem-cell-stemness-and-promotes-gastric-cancer-progression-by-stabilizing-bmi1-protein
#8
Yue Ma, Hua-Lin Fu, Zhen Wang, Hai Huang, Jian Ni, Jie Song, Ying Xia, Wei-Lin Jin, Da-Xiang Cui
Increased ubiquitin-specific protease 22 (USP22) has been associated with poor prognosis in several cancers including gastric cancer. However, the role of USP22 in gastric tumorigenesis is still unclear. Gastric cancer stem cells have been identified and shown to correlate with gastric cancer initiation and metastasis. In this study, we found that silencing of USP22 inhibited proliferation of gastric cancer cells and suppressed the cancer stem cell spheroid formation in serum-free culture. Furthermore, cancer stem cell markers, such as CD133, SOX2, OCT4 and NANOG were down-regulated...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28166203/lncrna-hulc-triggers-autophagy-via-stabilizing-sirt1-and-attenuates-the-chemosensitivity-of-hcc-cells
#9
H Xiong, Z Ni, J He, S Jiang, X Li, J He, W Gong, L Zheng, S Chen, B Li, N Zhang, X Lyu, G Huang, B Chen, Y Zhang, F He
Considerable evidences have shown that autophagy has an important role in tumor chemoresistance. However, it is still unknown whether the lncRNA HULC (highly upregulated in liver cancer) is involved in autophagy and chemoresistance of hepatocellular carcinoma (HCC). In this study, we for the first time demonstrated that treatment with antitumor reagents such as oxaliplatin, 5-fluorouracil and pirarubicin (THP) dramatically induced HULC expression and protective autophagy. Silencing of HULC sensitized HCC cells to the three antitumor reagents via inhibiting protective autophagy...
February 6, 2017: Oncogene
https://www.readbyqxmd.com/read/28160502/deubiquitinating-enzyme-usp22-positively-regulates-c-myc-stability-and-tumorigenic-activity-in-mammalian-and-breast-cancer-cells
#10
Dongyeon Kim, Ahyoung Hong, Hye In Park, Woo Hyun Shin, Lang Yoo, Seo Jeong Jeon, Kwang Chul Chung
The proto-oncogene c-Myc has a pivotal function in growth control, differentiation, and apoptosis and is frequently affected in human cancer, including breast cancer. Ubiquitin-specific protease 22 (USP22), a member of the USP family of deubiquitinating enzymes (DUBs), mediates deubiquitination of target proteins, including histone H2B and H2A, telomeric repeat binding factor 1, and cyclin B1. USP22 is also a component of the mammalian SAGA transcriptional co-activating complex. In this study, we explored the functional role of USP22 in modulating c-Myc stability and its physiological relevance in breast cancer progression...
February 4, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27983930/downregulation-of-ubiquitin-specific-protease-22-inhibits-proliferation-invasion-and-epithelial-mesenchymal-transition-in-osteosarcoma-cells
#11
Dengfeng Zhang, Feng Jiang, Xiao Wang, Guojun Li
Ubiquitin-specific protease 22 (USP22), a novel deubiquitinating enzyme, belongs to an extended family of proteins that have ubiquitin hydrolase activity. Recently, USP22 has attracted widespread attention because of its implication in carcinogenesis. However, there have been no studies, to our knowledge, investigating the expression of USP22 in osteosarcoma (OS) and its association with OS progression. In this study, we explored the role of USP22 in OS. We demonstrated that USP22 was highly expressed in OS tissue and cell lines...
May 24, 2017: Oncology Research
https://www.readbyqxmd.com/read/27920552/the-relationship-between-the-expression-of-usp22-bmi1-and-ezh2-in-hepatocellular-carcinoma-and-their-impacts-on-prognosis
#12
Run Zhai, Fang Tang, Jianhua Gong, Jing Zhang, Biao Lei, Bo Li, Yangchao Wei, Xingsi Liang, Bo Tang, Songqing He
Recent studies have shown that deubiquitination plays a key role in tumor progression, metastasis, resistance to chemotherapy drugs, and prognosis. In this study, we investigated the effects of the deubiquitinating enzyme USP22 on the expression of the drug-resistance genes BMI1 and EZH2 in hepatocellular carcinoma (HCC) and on prognosis. Downregulation of USP22 expression with interference ribonucleic acid in resistant HCC cell lines with high USP22 expression resulted in decreased BMI1 expression, but had no effect on EZH2 expression...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27904772/mir-101-targets-usp22-to-inhibit-the-tumorigenesis-of-papillary-thyroid-carcinoma
#13
Huadong Zhao, Haili Tang, Qike Huang, Bo Qiu, Xiaomin Liu, Dong Fan, Li Gong, Hang Guo, Chong Chen, Shixiong Lei, Lu Yang, Jianguo Lu, Guoqiang Bao
Increasing evidence suggests that microRNA-101 (miR-101) is involved in the progression of various human cancers, including papillary thyroid carcinoma (PTC). However, the biological functions of miR-101 and underlying molecular mechanisms in PTC remain largely unknown. In this study, we demonstrated that miR-101 underexpression in PTC tissue was associated with lymph node metastasis and poor prognosis of PTC patients. MiR-101 reduced PTC cell proliferation, apoptosis resistance, and invasion. Ubiquitin-specific protease 22 (USP22) was confirmed as a direct target of miR-101...
2016: American Journal of Cancer Research
https://www.readbyqxmd.com/read/27601583/cytoplasmic-atxn7l3b-interferes-with-nuclear-functions-of-the-saga-deubiquitinase-module
#14
Wenqian Li, Boyko S Atanassov, Xianjiang Lan, Ryan D Mohan, Selene K Swanson, Aimee T Farria, Laurence Florens, Michael P Washburn, Jerry L Workman, Sharon Y R Dent
The SAGA complex contains two enzymatic modules, which house histone acetyltransferase (HAT) and deubiquitinase (DUB) activities. USP22 is the catalytic subunit of the DUB module, but two adaptor proteins, ATXN7L3 and ENY2, are necessary for DUB activity toward histone H2Bub1 and other substrates. ATXN7L3B shares 74% identity with the N-terminal region of ATXN7L3, but the functions of ATXN7L3B are not known. Here we report that ATXN7L3B interacts with ENY2 but not other SAGA components. Even though ATXN7L3B localizes in the cytoplasm, ATXN7L3B overexpression increases H2Bub1 levels, while overexpression of ATXN7L3 decreases H2Bub1 levels...
November 15, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27501329/nuclear-gsk3%C3%AE-promotes-tumorigenesis-by-phosphorylating-kdm1a-and-inducing-its-deubiquitylation-by-usp22
#15
Aidong Zhou, Kangyu Lin, Sicong Zhang, Yaohui Chen, Nu Zhang, Jianfei Xue, Zhongyong Wang, Kenneth D Aldape, Keping Xie, James R Woodgett, Suyun Huang
Emerging evidence has shown that GSK3β plays oncogenic roles in multiple tumour types; however, the underlying mechanisms remain largely unknown. Here, we show that nuclear GSK3β is responsible for the accumulation of the histone demethylase KDM1A and critically regulates histone H3K4 methylation during tumorigenesis. GSK3β phosphorylates KDM1A Ser683 upon priming phosphorylation of KDM1A Ser687 by CK1α. Phosphorylation of KDM1A induces its binding with and deubiquitylation by USP22, leading to KDM1A stabilization...
September 2016: Nature Cell Biology
https://www.readbyqxmd.com/read/27160905/the-saga-deubiquitination-module-promotes-dna-repair-and-class-switch-recombination-through-atm-and-dnapk-mediated-%C3%AE-h2ax-formation
#16
Shaliny Ramachandran, Dania Haddad, Conglei Li, Michael X Le, Alexanda K Ling, Clare C So, Rajeev M Nepal, Jennifer L Gommerman, Kefei Yu, Troy Ketela, Jason Moffat, Alberto Martin
Class switch recombination (CSR) requires activation-induced deaminase (AID) to instigate double-stranded DNA breaks at the immunoglobulin locus. DNA breaks activate the DNA damage response (DDR) by inducing phosphorylation of histone H2AX followed by non-homologous end joining (NHEJ) repair. We carried out a genome-wide screen to identify CSR factors. We found that Usp22, Eny2, and Atxn7, members of the Spt-Ada-Gcn5-acetyltransferase (SAGA) deubiquitination module, are required for deubiquitination of H2BK120ub following DNA damage, are critical for CSR, and function downstream of AID...
May 17, 2016: Cell Reports
https://www.readbyqxmd.com/read/27145278/targeting-ubiquitin-specific-protease-22-suppresses-growth-and-metastasis-of-anaplastic-thyroid-carcinoma
#17
Hua-Dong Zhao, Hai-Li Tang, Ning-Ning Liu, Ya-Li Zhao, Qin-Qin Liu, Xiao-Shan Zhu, Lin-Tao Jia, Chun-Fang Gao, An-Gang Yang, Jun-Tang Li
Ubiquitin-specific protease 22 (USP22) aberrance has been implicated in several malignancies; however, whether USP22 plays a role in anaplastic thyroid carcinoma (ATC) remains unclear. Here, we report that USP22 expression is highly elevated in ATC tissues, which positively correlated with tumor size, extracapsular invasion, clinical stages, and poor prognosis of ATC patients. In vitro assays showed that USP22 depletion suppressed ATC cell survival and proliferation by decreasing Rb phosphorylation and cyclin D2, inactivating Akt, and simultaneously upregulating Rb; USP22 silencing restrained cell migration and invasion by inhibiting epithelial-mesenchymal transition; USP22 knockdown promoted mitochondrion- mediated and caspase-dependent apoptosis by upregulating Bax and Bid and promoting caspase-3 activation...
May 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27132940/atxn7l3-and-eny2-coordinate-activity-of-multiple-h2b-deubiquitinases-important-for-cellular-proliferation-and-tumor-growth
#18
Boyko S Atanassov, Ryan D Mohan, Xianjiang Lan, Xianghong Kuang, Yue Lu, Kevin Lin, Elizabeth McIvor, Wenqian Li, Ying Zhang, Laurence Florens, Stephanie D Byrum, Samuel G Mackintosh, Tammy Calhoun-Davis, Evangelia Koutelou, Li Wang, Dean G Tang, Alan J Tackett, Michael P Washburn, Jerry L Workman, Sharon Y R Dent
Histone H2B monoubiquitination (H2Bub1) is centrally involved in gene regulation. The deubiquitination module (DUBm) of the SAGA complex is a major regulator of global H2Bub1 levels, and components of this DUBm are linked to both neurodegenerative diseases and cancer. Unexpectedly, we find that ablation of USP22, the enzymatic center of the DUBm, leads to a reduction, rather than an increase, in global H2bub1 levels. In contrast, depletion of non-enzymatic components, ATXN7L3 or ENY2, results in increased H2Bub1...
May 19, 2016: Molecular Cell
https://www.readbyqxmd.com/read/27057639/ubiquitin-specific-peptidase-22-functions-and-its-involvement-in-disease
#19
REVIEW
Johanna Melo-Cardenas, Yusi Zhang, Donna D Zhang, Deyu Fang
Deubiquitylases remove ubiquitin moieties from different substrates to regulate protein activity and cell homeostasis. Since this posttranslational modification plays a role in several different cellular functions, its deregulation has been associated with different pathologies. Aberrant expression of the Ubiquitin-Specific Peptidase 22 (USP22) has been associated with poor cancer prognosis and neurological disorders. However, little is known about USP22 role in these pathologies or in normal physiology. This review summarizes the current knowledge about USP22 function from yeast to human and provides an overview of the possible mechanisms by which USP22 is emerging as a potential oncogene...
July 12, 2016: Oncotarget
https://www.readbyqxmd.com/read/27051294/mir-34b-inhibits-nasopharyngeal-carcinoma-cell-proliferation-by-targeting-ubiquitin-specific-peptidase-22
#20
Jianyong Xiao, Yingying Li, Wenyin Zhang, Yanni Jiang, Biaoyan Du, Yuhui Tan
OBJECTIVES: This study aimed to investigate the precise role of miR-34b in nasopharyngeal carcinoma (NPC). MATERIALS AND METHODS: The expression of miR-34b and transcription of ubiquitin-specific peptidase 22 (USP22) were examined using quantitative reverse transcription-polymerase chain reaction. Western blot analysis was used to measure the protein expression of USP22. A dualluciferase assay was used to investigate the interaction between miR-34b and USP22. Cell viability was determined by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide assay...
2016: OncoTargets and Therapy
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