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Chen H, Li C, He S, Ling J, Zhao H, Zhuo X. Immunohistochemical Expression and Clinical Significance of WWP1 Protein in Nasopharyngeal Cancer. J Histochem Cytochem 2024; 72:363-371. [PMID: 38804681 PMCID: PMC11179591 DOI: 10.1369/00221554241255722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 04/29/2024] [Indexed: 05/29/2024] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a common malignant tumor of the head and neck. Its pathogenesis is complicated and needs further investigation. The aim of this study was to investigate the expression and clinical significance of WWP1 in NPC. Bioinformatics approaches were used to evaluate the expression and functions of WWP1 in NPC. WWP1 protein expression was then detected by immunohistochemistry on a tissue microarray in an NPC cohort and its association with clinical features and prognosis was determined. In addition, WWP1 expression was knocked down in NPC cells using RNA interference, and their colony formation and invasion abilities were assessed. A total of 25 genes closely related to WWP1, which may be enriched in different pathways, were filtered out. WWP1 expression was significantly higher in NPC cells than in normal controls. High WWP1 expression was correlated with lymph node metastasis, tumor recurrence, clinical stage and poor prognosis. Knockdown of WWP1 resulted in attenuated proliferation and invasion of NPC cells. The results suggest that WWP1 may serve as a novel biomarker and prognostic factor for NPC and a potential therapeutic target worthy of further investigation.
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Affiliation(s)
- Huarong Chen
- Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Changya Li
- Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Shengmei He
- Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Junjun Ling
- Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Houyu Zhao
- Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Xianlu Zhuo
- Affiliated Hospital of Guizhou Medical University, Guiyang, China
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2
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Xu H, Tan L, Qu Q, Zhang W. NEDD4 attenuates oxidized low‑density lipoprotein‑induced inflammation and dysfunction in vascular endothelial cells via regulating APEX1 expression. Exp Ther Med 2023; 25:88. [PMID: 36684652 PMCID: PMC9849851 DOI: 10.3892/etm.2023.11787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 10/05/2022] [Indexed: 01/06/2023] Open
Abstract
Atherosclerosis chiefly results from inflammation as well as vascular endothelial cell dysfunction. Methylation levels of neuronally expressed developmentally downregulated 4 (NEDD4) were found to be fortified in atherosclerosis patients and NEDD4 deficiency enhanced vascular calcification. However, the exact function of NEDD4 in inflammation and vascular endothelial dysfunction remains to be elucidated. In the present study, CCK-8 assay was used to estimate cell viability. Reverse transcription-quantitative PCR was adopted to examine the expression of NEDD4, inflammation-associated enzymes and apurinic/apyrimidinic endodeoxyribonuclease 1 (APEX1). Western blotting was used to test NEDD4, endothelial nitric oxide synthase, inducible nitric oxide synthase and APEX1 protein levels. Cytotoxicity was detected by a lactate dehydrogenase (LDH) kit. Reactive oxygen species level was tested by a corresponding kit. Vascular cell adhesion molecule 1 and intercellular adhesion molecule 1 contents were examined with ELISA. Cell adhesion assays evaluated the adhesion of endothelial cells. Co-immunoprecipitation assay was used to test the relationship between NEDD4 and APEX1. The data revealed that NEDD4 expression rapidly declined in oxidized low density lipoprotein (ox-LDL)-induced human umbilical vein endothelial cells (HUVECs). Following NEDD4 overexpression, the active damage, inflammatory release and endothelial cell dysfunction in ox-LDL-induced HUVECs were attenuated. After co-transfection of APEX1 interference plasmids and NEDD4 overexpression plasmids, cell damage, inflammatory release and endothelial cell dysfunction in ox-LDL-induced HUVECs were improved again. Taken together, NEDD4 attenuated ox-LDL-induced inflammation and endothelial dysfunction by regulating APEX1 expression.
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Affiliation(s)
- Huiyu Xu
- Department of Critical Care Medicine, Shanxi Cardiovascular Hospital, Taiyuan, Shanxi 030024, P.R. China
| | - Lijuan Tan
- Department of Critical Care Medicine, Shanxi Cardiovascular Hospital, Taiyuan, Shanxi 030024, P.R. China
| | - Qiaofang Qu
- Department of Critical Care Medicine, Shanxi Cardiovascular Hospital, Taiyuan, Shanxi 030024, P.R. China
| | - Wutang Zhang
- Department of Critical Care Medicine, Shanxi Cardiovascular Hospital, Taiyuan, Shanxi 030024, P.R. China,Correspondence to: Dr Wutang Zhang, Department of Critical Care Medicine, Shanxi Cardiovascular Hospital, 18 Yifen Road, Taiyuan, Shanxi 030024, P.R. China
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3
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Snyder LB, Lai Y, Doviak H, Freeburg LA, Laney VK, Moore A, Zellars KN, Matesic LE, Spinale FG. Ubiquitin ligase Wwp1 gene deletion attenuates diastolic dysfunction in pressure-overload hypertrophy. Am J Physiol Heart Circ Physiol 2021; 321:H976-H984. [PMID: 34559578 DOI: 10.1152/ajpheart.00032.2021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 09/23/2021] [Indexed: 01/08/2023]
Abstract
Heart failure with a preserved left ventricular (LV) ejection fraction (HFpEF) often arises from a prolonged LV pressure overload (LVPO) and accompanied by abnormal extracellular matrix (ECM) accumulation. The E3 ubiquitin ligase WWP1 is a fundamental determinant ECM turnover. We tested the hypothesis that genetic ablation of Wwp1 would alter the progression of LVPO-induced HFpEF. LV echocardiography in mice with global Wwp1 deletion (n = 23; Wwp1-/-) was performed at 12 wk of age (baseline) and then at 2 and 4 wk following LVPO (transverse aortic banding) or surgery without LVPO induction. Age-matched wild-type mice (Wwp1+/+; n = 23) underwent identical protocols. LV EF remained constant and unchanged with LVPO and LV mass increased in both groups but was lower in the Wwp1-/- mice. With LVPO, the E/A ratio, an index of LV filling, was 3.97 ± 0.46 in Wwp1+/+ but was 1.73 ± 0.19 in the Wwp1-/- group (P < 0.05). At the transcriptional level, mRNA for fibrillar collagens (types I and III) decreased by approximately 50% in Wwp1-/- compared with the Wwp1+/+ group at 4 wk post-LVPO (P < 0.05) and was paralleled by a similar difference in LV fibrillar collagen content as measured by histochemistry. Moreover, mRNA levels for determinants favoring ECM accumulation, such as transforming growth factor (TGF), increased with LVPO, but were lower in the Wwp1-/- group. The absence of Wwp1 reduced the development of left ventricular hypertrophy and subsequent progression to HFpEF. Modulating the WWP1 pathway could be a therapeutic target to alter the natural history of HFpEF.NEW & NOTEWORTHY Heart failure with a preserved left ventricular (LV) ejection fraction (HFpEF) often arises from a prolonged LV pressure overload (LVPO) and is accompanied by abnormal extracellular matrix (ECM) accumulation. It is now recognized that the ECM is a dynamic entity that is regulated at multiple post-transcriptional levels, including the E3 ubiquitin ligases, such as WWP1. In the present study, WWP1 deletion in the context of an LVPO stimulus reduced functional indices of HFpEF progression and determinants of ECM remodeling.
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MESH Headings
- Animals
- Aorta/physiopathology
- Aorta/surgery
- Diastole
- Disease Models, Animal
- Disease Progression
- Extracellular Matrix/metabolism
- Extracellular Matrix/pathology
- Female
- Fibrillar Collagens/genetics
- Fibrillar Collagens/metabolism
- Gene Deletion
- Heart Failure/enzymology
- Heart Failure/genetics
- Heart Failure/pathology
- Heart Failure/physiopathology
- Heart Ventricles/enzymology
- Heart Ventricles/pathology
- Heart Ventricles/physiopathology
- Hypertrophy, Left Ventricular/enzymology
- Hypertrophy, Left Ventricular/genetics
- Hypertrophy, Left Ventricular/pathology
- Hypertrophy, Left Ventricular/physiopathology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Time Factors
- Ubiquitin-Protein Ligases/deficiency
- Ubiquitin-Protein Ligases/genetics
- Ventricular Dysfunction, Left/enzymology
- Ventricular Dysfunction, Left/genetics
- Ventricular Dysfunction, Left/pathology
- Ventricular Dysfunction, Left/physiopathology
- Ventricular Function, Left
- Ventricular Remodeling
- Mice
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Affiliation(s)
- Laura B Snyder
- Cell Biology and Anatomy, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, South Carolina
| | - Yimu Lai
- Cell Biology and Anatomy, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, South Carolina
| | - Heather Doviak
- Cell Biology and Anatomy, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, South Carolina
| | - Lisa A Freeburg
- Cell Biology and Anatomy, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, South Carolina
| | - Valerie K Laney
- Cell Biology and Anatomy, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, South Carolina
| | - Amber Moore
- Cell Biology and Anatomy, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, South Carolina
| | - Kia N Zellars
- Cell Biology and Anatomy, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, South Carolina
| | - Lydia E Matesic
- Department of Biological Sciences, University of South Carolina, Columbia, South Carolina
| | - Francis G Spinale
- Cell Biology and Anatomy, University of South Carolina School of Medicine and Columbia Veterans Affairs Health Care System, Columbia, South Carolina
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4
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Cheng F, Cheng Y, Zhao X, An L, Yang L, Li Z, Zhang L, He R. NEDD4 E3 ubiquitin protein ligase serves an important role in cutaneous melanoma occurrence and development. Exp Ther Med 2021; 22:1382. [PMID: 34650630 PMCID: PMC8506948 DOI: 10.3892/etm.2021.10818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/25/2021] [Indexed: 11/18/2022] Open
Abstract
The present study aimed to discuss the effects and relative mechanisms of NEDD4 E3 ubiquitin protein ligase (NEDD4) in cutaneous melanoma (CMM) occurrence and development. Clinical cancer and adjacent normal tissues samples were collected to analyze pathological changes and protein expression of NEDD4. Moreover, small interfering (si)RNA was used to knockdown NEDD4 expression in SK-MEL-2 and Malme-3M cells. Cellular proliferation, apoptosis, invasiveness and migration were examined using colony formation, flow cytometric, Transwell and wound-healing assays, respectively. In addition, the relative mRNA and protein expression levels of NEDD4, notch receptor 1 (Notch1) and PTEN were evaluated via reverse transcription-quantitative (RT-q) PCR and western blotting. It was found that NEDD4 mRNA and protein expression were significantly upregulated (both P<0.01). Following NEDD4-knockdown, colony number was significantly decreased, while the apoptotic rate was significantly increased, the invasive cell number was significantly inhibited and the wound-healing capacity was significantly decreased. Following si-NEDD4 transfection, RT-qPCR and western blotting revealed that NEDD4 and Notch1 mRNA and protein expression levels were significantly downregulated, while those of PTEN were significantly upregulated in the SK-MEL-2 and Malme-3M cell lines. Collectively, the current results suggest that NEDD4-knockdown effectively suppressed CMM biological activity by regulating the Notch1/PTEN pathway in vitro.
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Affiliation(s)
- Fang Cheng
- Department of Dermatology, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China
| | - Yi Cheng
- Department of Dermatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Xiaoling Zhao
- Department of Dermatology, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China
| | - Lihui An
- Department of Dermatology, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China
| | - Linfang Yang
- Department of Dermatology, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China
| | - Zihan Li
- Department of Dermatology, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China
| | - Lei Zhang
- Department of Dermatology, The Second People's Hospital of Guiyang, Guiyang, Guizhou 550023, P.R. China
| | - Runzhi He
- Department of Neurosurgery, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China
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5
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Zhao H, Zhang J, Fu X, Mao D, Qi X, Liang S, Meng G, Song Z, Yang R, Guo Z, Tong B, Sun M, Zuo B, Li G. Integrated bioinformatics analysis of the NEDD4 family reveals a prognostic value of NEDD4L in clear-cell renal cell cancer. PeerJ 2021; 9:e11880. [PMID: 34458018 PMCID: PMC8378337 DOI: 10.7717/peerj.11880] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 07/07/2021] [Indexed: 12/20/2022] Open
Abstract
The members of the Nedd4-like E3 family participate in various biological processes. However, their role in clear cell renal cell carcinoma (ccRCC) is not clear. This study systematically analyzed the Nedd4-like E3 family members in ccRCC data sets from multiple publicly available databases. NEDD4L was identified as the only NEDD4 family member differentially expressed in ccRCC compared with normal samples. Bioinformatics tools were used to characterize the function of NEDD4L in ccRCC. It indicated that NEDD4L might regulate cellular energy metabolism by co-expression analysis, and subsequent gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. A prognostic model developed by the LASSO Cox regression method showed a relatively good predictive value in training and testing data sets. The result revealed that NEDD4L was associated with biosynthesis and metabolism of ccRCC. Since NEDD4L is downregulated and dysregulation of metabolism is involved in tumor progression, NEDD4L might be a potential therapeutic target in ccRCC.
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Affiliation(s)
- Hui Zhao
- Department of Urology, Affiliated Hospital of Weifang Medical University, Weifang, China.,Department of Urology, China Rehabilitation Research Centre, Rehabilitation School of Capital Medical University, Beijing, China
| | - Junjun Zhang
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Xiaoliang Fu
- Department of Urology, The Second Affiliated Hospital of Air Force Medical University, Xian, China
| | - Dongdong Mao
- Department of Urology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Xuesen Qi
- Department of Urology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Shuai Liang
- Department of Urology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Gang Meng
- Department of Urology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Zewen Song
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Ru Yang
- Henan Key Laboratory of Neurorestoratology, The First Affliated Hospital of Xinxiang Medical University, Weihui, China
| | - Zhenni Guo
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Binghua Tong
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Meiqing Sun
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Baile Zuo
- Tumor Molecular Immunology and Immunotherapy Laboratory, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
| | - Guoyin Li
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China.,Academy of Medical Science, Zhengzhou University, Zhengzhou, China
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6
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The emerging role of WWP1 in cancer development and progression. Cell Death Discov 2021; 7:163. [PMID: 34226507 PMCID: PMC8257788 DOI: 10.1038/s41420-021-00532-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/08/2021] [Accepted: 05/23/2021] [Indexed: 12/16/2022] Open
Abstract
Emerging evidence demonstrates that WW domain-containing E3 ubiquitin protein ligase 1 (WWP1) participates into carcinogenesis and tumor progression. In this review article, we will describe the association between dysregulated WWP1 expression and clinical features of cancer patients. Moreover, we summarize the both oncogenic and tumor suppressive functions of WWP1 in a variety of human cancers. Furthermore, we briefly describe the downstream substrates of WWP1 and its upstream factors to regulate the expression of WWP1. Notably, targeting WWP1 by its inhibitors or natural compounds is potentially useful for treating human malignancies. Finally, we provide the perspectives regarding WWP1 in cancer development and therapies. We hope this review can stimulate the research to improve our understanding of WWP1-mediated tumorigenesis and accelerate the discovery of novel therapeutic strategies via targeting WWP1 expression in cancers.
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7
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Gao X, Xu H, Xu D, Li S, Wei Z, Li S, Cai W, Mao N, Jin F, Li Y, Li T, Yi X, Liu H, Yang F. MiR-411-3p alleviates Silica-induced pulmonary fibrosis by regulating Smurf2/TGF-β signaling. Exp Cell Res 2020; 388:111878. [PMID: 32004504 DOI: 10.1016/j.yexcr.2020.111878] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/11/2020] [Accepted: 01/26/2020] [Indexed: 02/03/2023]
Abstract
Occupational exposure to silica dust particles was the major cause of pulmonary fibrosis, and many miRNAs have been demonstrated to regulate target mRNAs in silicosis. In the present study, we found that a decreasing level of miR-411-3p in silicosis rats and lung fibroblasts induced by TGF-β1. Enlargement of miR-411-3p could inhibit the cell proliferation and migration in lung fibroblasts with TGF-β1 treatment and attenuate lung fibrosis in silicotic mice. In addition, a mechanistic study showed that miR-411-3p exert its inhibitory effect on Smad ubiquitination regulatory factor 2 (Smurf2) expression and decrease ubiquitination degradation of Smad7 regulated by smurf2, result in blocking of TGF-β/Smad signaling. We proposed that increased expression of miR-411-3p abrogates silicosis by blocking activation of TGF-β/Smad signaling through decreasing ubiquitination degradation effect of smurf2 on Smad7.
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Affiliation(s)
- Xuemin Gao
- Basic Medical College, Hebei Medical Collage, Shijiazhuang, Hebei, 050017, China
| | - Hong Xu
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Dingjie Xu
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Shumin Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Zhongqiu Wei
- Basic Medical College, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Shifeng Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Wenchen Cai
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Na Mao
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Fuyu Jin
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Yaqian Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Tian Li
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Xue Yi
- Key Labortary of Functional and Clinical Translational Medicine, Xiamen Medical College, Xianmen, Fujian, China
| | - Heliang Liu
- School of Public Health, Hebei Key Laboratory for Organ Fibrosis Research, North China University of Science and Technology, Tangshan, Hebei, 063210, China
| | - Fang Yang
- Basic Medical College, Hebei Medical Collage, Shijiazhuang, Hebei, 050017, China.
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8
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Pian L, Huang X, Zhao M, Zhang Y, Qin C, Zhang J, Zhang J, Wang Q. Leucine-rich repeat and sterile alpha motif containing 1 promotes the oncogenic growth of human hepatocellular carcinoma cells. Cancer Cell Int 2019; 19:255. [PMID: 31592239 PMCID: PMC6775663 DOI: 10.1186/s12935-019-0976-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 09/23/2019] [Indexed: 01/07/2023] Open
Abstract
Background Hepatocellular carcinoma (HCC), the most common primary cancer of the liver, is one of the most common malignancies and the leading cause of cancer-related death worldwide. Leucine-rich repeat and sterile alpha motif containing 1 (LRSAM1) is an E3 ubiquitin ligase involved in diverse cellular activities, including the regulation of cargo sorting, cell adhesion and antibacterial autophagy. The role of LRSAM1 in HCC remains unknown. Methods In this study, we reviewed the TCGA database and then performed gain-of-function and loss-of-function analyses of LRSAM1 in HCC cell lines. Results We found that the mRNA expression level of LRSAM1 was significantly increased in clinical HCC tissues in the TCGA database. Transient LRSAM1 knockdown in several human HCC cell lines led to reduced growth in conventional culture conditions. Stable LRSAM1 knockdown in HepG2 cells led to impaired anchorage-independent growth whereas its stable ectopic overexpression yielded the opposite effects. LRSAM1 overexpression in HepG2 cells enhanced in vivo tumorigenicity, whereas LRSAM1 knockdown in this cell line significantly impaired tumor growth. Conclusions Our data suggest that LRSAM1 promotes the oncogenic growth of human HCC cells, although the underlying mechanisms remain to be explored.
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Affiliation(s)
- Lili Pian
- Beijing Institute of Brain Sciences, East 0749, 27# Taiping Road, Haidian District, Beijing, 100850 China.,2Henan University Joint National Laboratory for Antibody Drug Engineering, School of Medicine, Henan University, Jinming District, Kaifeng, 475004 People's Republic of China
| | - Xiaofeng Huang
- Beijing Institute of Brain Sciences, East 0749, 27# Taiping Road, Haidian District, Beijing, 100850 China
| | - Min Zhao
- Beijing Institute of Brain Sciences, East 0749, 27# Taiping Road, Haidian District, Beijing, 100850 China
| | - Yaolin Zhang
- Beijing Institute of Brain Sciences, East 0749, 27# Taiping Road, Haidian District, Beijing, 100850 China
| | - Cheng Qin
- Beijing Institute of Brain Sciences, East 0749, 27# Taiping Road, Haidian District, Beijing, 100850 China
| | - Jiyan Zhang
- Beijing Institute of Brain Sciences, East 0749, 27# Taiping Road, Haidian District, Beijing, 100850 China
| | - Jun Zhang
- 2Henan University Joint National Laboratory for Antibody Drug Engineering, School of Medicine, Henan University, Jinming District, Kaifeng, 475004 People's Republic of China
| | - Qingyang Wang
- Beijing Institute of Brain Sciences, East 0749, 27# Taiping Road, Haidian District, Beijing, 100850 China
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