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Wu Z, Shi M, Zhao X, Wu G, Zheng H, Cui Y, Shang Y. LINC00963 Represses Osteogenic Differentiation of hBMSCs via the miR-10b-5p/RAP2A/AKT Axis. Int J Sports Med 2024. [PMID: 39068933 DOI: 10.1055/a-2323-9749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
Osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hBMSCs) is important for human bone formation. Long non-coding RNAs (lncRNAs) are critical regulators in osteogenic differentiation. This study aimed to explore the function and mechanisms of long intergenic non-protein coding RNA 963 (LINC00963) in affecting osteogenesis. Cell differentiation was assessed by alkaline phosphatase (ALP) activity detection and ALP staining assay. Meanwhile, levels of osteogenic marker genes, including RUNX family transcription factor 2 (RUNX2), osteocalcin (OCN), and osteopontin (OPN), were detected by RT-qPCR and western blot. Cell proliferation and apoptosis were measured using CCK-8 assay and flow cytometry analysis. RNA immunoprecipitation (RIP), RNA pull-down and luciferase reporter assays were used to investigate the interaction between genes. LINC00963 expression was down-regulated in hBMSCs treated with osteogenic induction. LINC00963 overexpression inhibited hBMSCs differentiation, proliferation, and elevated apoptosis. LINC00963 acted as a competing endogenous RNA (ceRNA) to interact with miR-10b-5p and thereby regulated the expression level of Ras-related protein Rap-2a (RAP2A). LINC00963 regulated RAP2A to inhibit the level of phosphorylated AKT (p-AKT). LINC00963 inhibited hBMSCs differentiation, proliferation, and elevated apoptosis via the miR-10b-5p/RAP2A/AKT signaling, which might help improve the treatment of osteoporosis.
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Affiliation(s)
- Zhixin Wu
- Histology & Embryology Teaching and Researching Section, Xi'an Medical University, Xi'an, China
| | - Mingjuan Shi
- Public Health College, Xi'an Medical University, Xi'an, China
| | - Xuan Zhao
- Histology & Embryology Teaching and Researching Section, Xi'an Medical University, Xi'an, China
| | - Guifu Wu
- Department Endocrinology, Shaanxi Province People Hospital, Xi'an, China
| | - Huiyuan Zheng
- Histology & Embryology Teaching and Researching Section, Xi'an Medical University, Xi'an, China
| | - Yuanyuan Cui
- Histology & Embryology Teaching and Researching Section, Xi'an Medical University, Xi'an, China
| | - Yu Shang
- Clinical College, Xi'an Medical University, Xi'an, China
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Ren H, Ou Q, Pu Q, Lou Y, Yang X, Han Y, Liu S. Comprehensive Review on Bimolecular Fluorescence Complementation and Its Application in Deciphering Protein-Protein Interactions in Cell Signaling Pathways. Biomolecules 2024; 14:859. [PMID: 39062573 PMCID: PMC11274695 DOI: 10.3390/biom14070859] [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: 06/24/2024] [Revised: 07/14/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Signaling pathways are responsible for transmitting information between cells and regulating cell growth, differentiation, and death. Proteins in cells form complexes by interacting with each other through specific structural domains, playing a crucial role in various biological functions and cell signaling pathways. Protein-protein interactions (PPIs) within cell signaling pathways are essential for signal transmission and regulation. The spatiotemporal features of PPIs in signaling pathways are crucial for comprehending the regulatory mechanisms of signal transduction. Bimolecular fluorescence complementation (BiFC) is one kind of imaging tool for the direct visualization of PPIs in living cells and has been widely utilized to uncover novel PPIs in various organisms. BiFC demonstrates significant potential for application in various areas of biological research, drug development, disease diagnosis and treatment, and other related fields. This review systematically summarizes and analyzes the technical advancement of BiFC and its utilization in elucidating PPIs within established cell signaling pathways, including TOR, PI3K/Akt, Wnt/β-catenin, NF-κB, and MAPK. Additionally, it explores the application of this technology in revealing PPIs within the plant hormone signaling pathways of ethylene, auxin, Gibberellin, and abscisic acid. Using BiFC in conjunction with CRISPR-Cas9, live-cell imaging, and ultra-high-resolution microscopy will enhance our comprehension of PPIs in cell signaling pathways.
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Affiliation(s)
| | | | | | | | | | | | - Shiping Liu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400716, China; (H.R.); (Q.O.); (Q.P.); (Y.L.); (X.Y.); (Y.H.)
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Frontiñán-Rubio J, Llanos-González E, García-Carpintero S, Peinado JR, Ballesteros-Yáñez I, Rayo MV, de la Fuente J, Pérez-García VM, Perez-Romasanta LA, Malumbres M, Alcaín FJ, Durán-Prado M. CoQ 10 reduces glioblastoma growth and infiltration through proteome remodeling and inhibition of angiogenesis and inflammation. Cell Oncol (Dordr) 2023; 46:65-77. [PMID: 36319818 PMCID: PMC9947058 DOI: 10.1007/s13402-022-00734-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2022] [Indexed: 11/05/2022] Open
Abstract
PURPOSE Most monotherapies available against glioblastoma multiforme (GBM) target individual hallmarks of this aggressive brain tumor with minimal success. In this article, we propose a therapeutic strategy using coenzyme Q10 (CoQ10) as a pleiotropic factor that crosses the blood-brain barrier and accumulates in cell membranes acting as an antioxidant, and in mitochondrial membranes as a regulator of cell bioenergetics and gene expression. METHODS Xenografts of U251 cells in nu/nu mice were used to assay tumor growth, hypoxia, angiogenesis, and inflammation. An orthotopic model was used to explore microglial infiltration, tumor growth, and invasion into the brain parenchyma. Cell proliferation, migration, invasion, proteome remodeling, and secretome were assayed in vitro. Conditioned media were used to assay angiogenesis, monocyte chemoattraction, and differentiation into macrophages in vitro. RESULTS CoQ10 treatment decreased tumor volume in xenografts and orthotopic models, although its effect on tumor cell proliferation was not direct. Tumors from mice treated with CoQ10 were less hypoxic and vascularized, having less infiltration from inflammatory cells. Treatment-induced downregulation of HIF-1α and NF-kB led to a complete remodeling of the tumor cells proteome and secretome, impacting angiogenesis, monocyte infiltration, and their differentiation into macrophages. Besides, tumor cell migration and invasion were drastically restricted by mechanisms involving modulation of the actin cytoskeleton and downregulation of matrix metalloproteases (MMPs). CONCLUSIONS CoQ10 has a pleiotropic effect on GBM growth, targeting several hallmarks simultaneously. Thus, its integration into current treatments of this fatal disease should be considered.
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Affiliation(s)
- Javier Frontiñán-Rubio
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Emilio Llanos-González
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Sonia García-Carpintero
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Juan Ramón Peinado
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Inmaculada Ballesteros-Yáñez
- EMAS Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Margarita Villar Rayo
- SaBio Research Group, Hunting Resources Research Institute (IREC), Ciudad Real, Spain
| | - José de la Fuente
- SaBio Research Group, Hunting Resources Research Institute (IREC), Ciudad Real, Spain
| | - Víctor M Pérez-García
- Laboratory of Mathematical Oncology, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Luis A Perez-Romasanta
- Radiology and Medicinal Physics, Institute for Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Marcos Malumbres
- Cell Division and Cancer Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Francisco J Alcaín
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain.
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain.
| | - Mario Durán-Prado
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain.
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain.
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He X, Zhang W, Fu W, Liu X, Yang P, Wang J, Zhu M, Li S, Zhang W, Zhang X, Dong G, Yan C, Zhao Y, Zeng Z, Jing H. The prognostic value of RASGEF1A RNA expression and DNA methylation in cytogenetically normal acute myeloid leukemia. Cancer Biomark 2022; 36:103-116. [PMID: 36404533 DOI: 10.3233/cbm-210407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Acute myeloid leukemia (AML) is a significantly heterogeneous malignancy of the blood. Cytogenetic abnormalities are crucial for the prognosis of AML. However, since more than half of patients with AML are cytogenetically normal AML (CN-AML), predictive prognostic indicators need to be further refined. In recent years, gene abnormalities are considered to be strong prognostic factors of CN-AML, already having clinical significance for treatment. In addition, the relationship of methylation in some genes and AML prognosis predicting has been discovered. RASGEF1A is a guanine nucleotide exchange factors of Ras and widely expressed in brain tissue, bone marrow and 17 other tissues. RASGEF1A has been reported to be associated with a variety of malignant tumors, examples include Hirschsprung disease, renal cell carcinoma, breast cancer, diffuse large B cell lymphoma, intrahepatic cholangiocarcinoma and so on [1, 2]. However, the relationship between the RASGEF1A gene and CN-AML has not been reported. METHODS By integrating the Cancer Genome Atlas (TCGA) database 75 patients with CN-AML and 240 Gene Expression Omnibus (GEO) database CN-AML samples, we examined the association between RASGEF1A's RNA expression level and DNA methylation of and AML patients' prognosis. Then, we investigated the RASGEF1A RNA expression and DNA methylation's prognostic value in 77 patients with AML after allogeneic hematopoietic stem cell transplantation (Allo-HSCT) as well as 101 AML patients after chemotherapy respectively. We investigated the association between sensitivity to Crenolanib and expression level of RASGED1A in patients by integrating 191 CN-AML patients from BeatAML dadataset. We integrated the expression and methylation of RASGEF1A to predict the CN-AML patients' prognosis and investigated the relationship between prognostic of AML patients with different risk classification and expression levels or methylation levels of RASGEF1A. RESULTS We found that RASGEF1A gene high expression group predicted poorer event-free survival (EFS) (P< 0.0001) as well as overall survival (OS) (P< 0.0001) in CN-AML samples, and the identical results were found in AML patients receiving chemotherapy (P< 0.0001) and Allo-HSCT (P< 0.0001). RASGEF1A RNA expression level is an CN-AML patients' independent prognostic factor (EFS: HR = 5.5534, 95% CI: 1.2982-23.756, P= 0.0208; OS: HR = 5.3615, 95% CI: 1.1014-26.099, P= 0.0376). The IC50 (half maximal inhibitory concentration) of Crenolanib of CN-AML samples with RASGEF1A high expression level is lower. In addition, patients with high RASGEF1A methylation level had significant favorable prognosis (EPS: P< 0.0001, OS: P< 0.0001). Furthermore, the integrative analysis of expression and methylation of RASGEF1A could classify CN-AML patients into subgroups with different prognosis (EFS: P= 0.034, OS: P= 0.0024). Expression levels or methylation levels of RASGEF1A help to improve risk classification of 2010 European Leukemia Net. CONCLUSION Higher RASGEF1A RNA expression and lower DNA methylation predicts CN-AML patients' poorer prognosis. The RASGEF1A high expression level from patients with CN-AML have better sensitivity to Crenolanib. The integrative analysis of RASGEF1A RNA expression and DNA methylation can provide a more accurate classification for prognosis. Lower RASGEF1A expression is a favorable prognostic factor for AML patients receiving chemotherapy or Allo-HSCT. 2010 European Leukemia Net's risk classification can be improved by RASGEF1A expression levels or methylation levels.
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Affiliation(s)
- Xue He
- Department of Pathology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Pathology, Capital Medical University, Beijing, China.,Department of Pathology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Weilong Zhang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China.,Department of Pathology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wei Fu
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China.,Department of Pathology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xiaoni Liu
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Ping Yang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - Jing Wang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - Mingxia Zhu
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - Shaoxiang Li
- Department of Pathology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Pathology, Capital Medical University, Beijing, China
| | - Wei Zhang
- Department of Pathology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Pathology, Capital Medical University, Beijing, China
| | - Xiuru Zhang
- Department of Pathology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Pathology, Capital Medical University, Beijing, China
| | - Gehong Dong
- Department of Pathology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Department of Pathology, Capital Medical University, Beijing, China
| | | | - Yali Zhao
- General Practice Medicine, The First People's Hospital of Huzhou, Huzhou, Zhejiang, China
| | - Zhiping Zeng
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Hongmei Jing
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, Beijing, China
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Kumari S, Arora M, Singh J, Kadian LK, Yadav R, Chauhan SS, Chopra A. Molecular Associations and Clinical Significance of RAPs in Hepatocellular Carcinoma. Front Mol Biosci 2021; 8:677979. [PMID: 34235179 PMCID: PMC8255377 DOI: 10.3389/fmolb.2021.677979] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/26/2021] [Indexed: 12/24/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is an aggressive gastrointestinal malignancy with a high rate of mortality. Multiple studies have individually recognized members of RAP gene family as critical regulators of tumor progression in several cancers, including hepatocellular carcinoma. These studies suffer numerous limitations including a small sample size and lack of analysis of various clinicopathological and molecular features. In the current study, we utilized authoritative multi-omics databases to determine the association of RAP gene family expression and detailed molecular and clinicopathological features in hepatocellular carcinoma (HCC). All five RAP genes were observed to harbor dysregulated expression in HCC compared to normal liver tissues. RAP2A exhibited strongest ability to differentiate tumors from the normal tissues. RAP2A expression was associated with progressive tumor grade, TP53 and CTNNB1 mutation status. Additionally, RAP2A expression was associated with the alteration of its copy numbers and DNA methylation. RAP2A also emerged as an independent marker for patient prognosis. Further, pathway analysis revealed that RAP2A expression is correlated with tumor-infiltrating immune cell composition and oncogenic molecular pathways, such as cell cycle and cellular metabolism.
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Affiliation(s)
- Sarita Kumari
- Laboratory Oncology Unit, Dr. BRA-IRCH, All India Institute of Medical Sciences, New Delhi, India
| | - Mohit Arora
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Jay Singh
- Laboratory Oncology Unit, Dr. BRA-IRCH, All India Institute of Medical Sciences, New Delhi, India
| | - Lokesh K Kadian
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Rajni Yadav
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Shyam S Chauhan
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Anita Chopra
- Laboratory Oncology Unit, Dr. BRA-IRCH, All India Institute of Medical Sciences, New Delhi, India
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6
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RAP2A promotes apoptosis resistance of hepatocellular carcinoma cells via the mTOR pathway. Clin Exp Med 2021; 21:545-554. [PMID: 34018090 DOI: 10.1007/s10238-021-00723-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 05/06/2021] [Indexed: 12/24/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most common digestive system cancer. In the current study, we investigated the biological effects of Ras-related protein Rap-2a (RAP2A), a GTPase protein, in HCC tissues and cells. We found that RAP2A was upregulated in HCC tissues and cells. RAP2A knockdown could effectively inhibit the proliferation of HCC cells and weaken its apoptosis resistance. In terms of its action mechanism, RAP2A may be involved in activating the mTOR signaling pathway. Therefore, we believe that RAP2A is abnormally highly expressed in HCC tissues and promotes tumor cell proliferation and apoptosis resistance by activating the mTOR signaling pathway, and it may serve as a potential target for HCC treatment.
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Wu F, Lin X, Shan SK, Li F, Xu F, Zhong JY, Guo B, Zheng MH, Wang Y, Mo ZH, Yuan LQ. The Suppression of miR-199a-3p by Promoter Methylation Contributes to Papillary Thyroid Carcinoma Aggressiveness by Targeting RAP2a and DNMT3a. Front Cell Dev Biol 2020; 8:594528. [PMID: 33365310 PMCID: PMC7750465 DOI: 10.3389/fcell.2020.594528] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/21/2020] [Indexed: 12/24/2022] Open
Abstract
Background It was previously demonstrated that miR-199a-3p plays an important role in tumor progression; especially, its down-regulation in papillary thyroid cancer (PTC) is associated with cancer cell invasion and proliferation. In the present report, we investigated the mechanism involved in the down-regulation of miR-199a-3p in PTC and how miR-199a-3p regulates PTC invasion both in vivo and in vitro. Methods qRT-PCR and Western blot assays were used to determine the expression of the investigated genes. Bisulfite sequencing PCR was used to investigate miR-199a-3p methylation. The functions of miR-199a-3p were investigated by a series of in vitro and in vivo experiments. Results Our results showed hypermethylation of the miR-199a-3p promoter, which resulted in decreased miR-199a-3p expression both in PTC cell lines and PTC tissues. DNA-methyltransferase 3a (DNMT3a), a target gene of miR-199a-3p, was increased both in PTC cell lines and PTC tissues, while 5-aza-2′-deoxycytidine (methyltransferase-specific inhibitor) or knock-down using DNMT3a Small-Interfering RNA could restore the expression of miR-199a-3p, and the over-expression of miR-199a-3p could decrease the expression of DNMT3a; this suggests that miR-199a-3p/DNMT3a constructs a regulatory circuit in regulating miR-199a-3p/DNMT3a expression. Moreover, gain- and loss-of-function studies revealed that miR-199a-3p is involved in cancer cell migration, invasion, and growth. Meanwhile, we found that RAP2a was also a direct target of miR-199a-3p, which might mediate the tumor-growth-inhibiting effect of miR-199a-3p. To further confirm the tumor-suppressive properties of miR-199a-3p, stable overexpression of miR-199a-3p in a PTC cell line (BCPAP cells) was xenografted to athymic BALB/c nude mice, resulting in delayed tumor growth in vivo. In clinical PTC samples, the expression of RAP2a and DNMT3a was increased significantly, and the expression of RAP2a was inversely correlated with that of miR-199a-3p. Conclusion Our studies demonstrate that an epigenetic change in the promoter region of miR-199a contributes to the aggressive behavior of PTC via the miR-199a-3p/DNMT3a regulatory circuit and directly targets RAP2a.
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Affiliation(s)
- Feng Wu
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, China.,Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiao Lin
- Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Su-Kang Shan
- Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Fuxingzi Li
- Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Feng Xu
- Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jia-Yu Zhong
- Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Bei Guo
- Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ming-Hui Zheng
- Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yi Wang
- Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhao-Hui Mo
- Department of Endocrinology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Ling-Qing Yuan
- Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
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Zhu J, Wang L, Zhou Y, Hao J, Wang S, Liu L, Li J. Comprehensive analysis of the relationship between competitive endogenous RNA (ceRNA) networks and tumor infiltrating-cells in hepatocellular carcinoma. J Gastrointest Oncol 2020; 11:1381-1398. [PMID: 33457008 DOI: 10.21037/jgo-20-555] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background The innovation of immune checkpoint blockade (ICB) represents a promising shift in the treatment of advanced hepatocellular carcinoma (HCC). However, response to ICB has varied largely due to the high tumor heterogeneity and complex tumor microenvironment (TME). The competitive endogenous RNA (ceRNA) network also plays an important role in tumor occurrence and progression, but its relation with tumor-infiltrating immune cells (TICs) remains largely unexplored in HCC. The overriding objective of our study was thus to construct a prognosis-related risk model and to further evaluate the relationship between ceRNA networks and TICs. Methods Differentially expressed gene (DEG) analysis was performed to identify the differentially expressed RNAs. Lasso and multivariable Cox regression analyses were used to construct risk models, which were assessed by the area under the receiver operating characteristic curve (AUC of ROC) and Kaplan-Meier (K-M) curves. Then, a single-sample gene set enrichment analysis (ssGSEA) algorithm was adopted to dissect the TICs in HCC samples. Nomograms were constructed and calibration curves were used to verify the discrimination and accuracy of the nomograms. Finally, integration analysis was performed to validate the correlation of ceRNA and TICs. Results In the study, 7 differentially expressed RNAs [5 messenger RNA s (mRNAs) and 2 micro RNAs (miRNAs)] were incorporated to construct a ceRNA risk model. The AUC of the 1-, 3-, and 5-year overall survival (OS) were 0.784, 0.685, and 0.691 respectively. Likewise, 7 types TICs were in the TICs signature model and the AUC of the 1-, 3-, and 5-year OS were 0.706, 0.731, and 0.721 respectively. The integration analysis showed that 7 pairs of mRNA-TICs and 1 pair of miRNA-TICs had a close relation (all correlation coefficients >0.2, P<0.001). Conclusions Through constructing two risk models based on ceRNA network and TICs, we identified the hub RNAs and key TICs in the progression and prognosis of HCC, and further explored the relationship between ceRNA and TME. Importantly, targeting these hub RNAs may facilitate the remodeling of the TME and be a potential therapeutic alternative to enhancing the response to ICB, thus improving the prognosis of HCC patients.
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Affiliation(s)
- Jun Zhu
- State Key Laboratory of Cancer Biology, Institute of Digestive Diseases, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Liang Wang
- Department of Ophthalmology, Eye Institute of Chinese PLA, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yifan Zhou
- Department of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Jun Hao
- Department of Experiment Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shuai Wang
- State Key Laboratory of Cancer Biology, Institute of Digestive Diseases, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Lei Liu
- Department of Gastroenterology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jipeng Li
- State Key Laboratory of Cancer Biology, Institute of Digestive Diseases, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
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9
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MiR-140 targets RAP2A to enable the proliferation of insulin-treated ovarian granulosa cells. J Ovarian Res 2020; 13:13. [PMID: 32024547 PMCID: PMC7003402 DOI: 10.1186/s13048-020-0611-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 01/20/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND We elucidated the role of specific MicroRNAs (miRNAs) in the development of polycystic ovary syndrome (PCOS) and explained the changes in the proliferation of granulosa cells. Excised ovarian cortex specimens were collected for miRNA profiling analysis (n = 20 PCOS females and 5 non-PCOS females). Insulin-treated ovarian granulosa cells isolated from mice were used for mechanical studies. RESULTS High miR-140 expression was observed in PCOS samples and insulin-treated granulosa cells compared to that in non-PCOS and unstimulated cells, respectively. However, the Ras-related protein Rap-2a precursor (RAP2A) was downregulated in in PCOS. MTT assay and EdU staining showed that an miR-140 inhibitor attenuated viability in insulin-treated granulosa cells; cell viability increased with miR-140 overexpression. Reduced expression of miR-140 and the expression of the miR-140 mimic resulted in marked cell apoptosis, as evidenced by the results of PI flow cytometry and Annexin V-FITC; miR-140 overexpression results in downregulated RAP2A expression, and the miR-140 mimic directly bound to the RAP2A 3'-UTR, causing increase in RAP2A levels in insulin-treated granulosa cells; RNA-mediated silencing of RAP2A in insulin-treated granulosa cells restored cell proliferation and apoptosis to normal levels. Phosphorylated AKT was found to be negatively regulated through cross-talk between miR-140 and RAP2A. CONCLUSIONS In conclusion, PCOS ovarian cortex specimens and insulin-treated granulosa cells showed elevated expression of miR-140, which could lead to increased proliferation and reduced apoptosis of cells by targeting RAP2A. This study may pave the way for future research on the properties of granulosa cells in PCOS.
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10
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Christians A, Poisel E, Hartmann C, von Deimling A, Pusch S. Characterization of the epithelial membrane protein 3 interaction network reveals a potential functional link to mitogenic signal transduction regulation. Int J Cancer 2019; 145:461-473. [PMID: 30614533 DOI: 10.1002/ijc.32107] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 12/07/2018] [Accepted: 12/20/2018] [Indexed: 12/18/2022]
Abstract
Epithelial Membrane Protein 3 (EMP3), a 4-transmembrane glycoprotein, first gained attention as a putative tumor suppressor. Accumulating evidence, however, points to a more tumor promotive function of EMP3. The biological function of EMP3 remains largely unclear. To elucidate more of EMP3's interaction network, we performed a Yeast-Two-Hybrid (Y2H) screening, followed by validation of candidate interactors by Biomolecular Fluorescence Complementation (BiFC) and Proximity Ligation Assay (PLA). Furthermore, we generated stable EMP3 knockdown cell lines and measured cell proliferation, migration and sensitivity to apoptosis induction as well as the expression and activation levels of important signal pathway components. The Y2H screening yielded 10 novel interactions of EMP3, eight of which could also be detected by BiFC and PLA interaction assays. All newly discovered interaction partners are involved in signaling or trafficking regulation. Most notably, FLOT1 and HTATIP2 have well described roles in the regulation of EGFR signaling. In addition, knockdown of EMP3 resulted in reduced levels of p-AKT, p-ERK and p-EGFR, attenuated cell proliferation and migration and sensitized cells to apoptosis induction by TRAIL and Staurosporine. Based on these observations we hypothesize that EMP3 might be involved in the regulation of receptor-tyrosine-kinase mediated mitogenic signaling.
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Affiliation(s)
- Arne Christians
- Department of Neuropathology, Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Eric Poisel
- Department of Neuropathology, Institute of Pathology, Ruprecht-Karls-University Heidelberg, Germany.,German Consortium of Translational Cancer Research (DKTK), Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Christian Hartmann
- Department of Neuropathology, Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - Andreas von Deimling
- Department of Neuropathology, Institute of Pathology, Ruprecht-Karls-University Heidelberg, Germany.,German Consortium of Translational Cancer Research (DKTK), Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Stefan Pusch
- Department of Neuropathology, Institute of Pathology, Ruprecht-Karls-University Heidelberg, Germany.,German Consortium of Translational Cancer Research (DKTK), Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
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11
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Identification of the Gene Expression Rules That Define the Subtypes in Glioma. J Clin Med 2018; 7:jcm7100350. [PMID: 30322114 PMCID: PMC6210469 DOI: 10.3390/jcm7100350] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/09/2018] [Accepted: 10/11/2018] [Indexed: 11/16/2022] Open
Abstract
As a common brain cancer derived from glial cells, gliomas have three subtypes: glioblastoma, diffuse astrocytoma, and anaplastic astrocytoma. The subtypes have distinctive clinical features but are closely related to each other. A glioblastoma can be derived from the early stage of diffuse astrocytoma, which can be transformed into anaplastic astrocytoma. Due to the complexity of these dynamic processes, single-cell gene expression profiles are extremely helpful to understand what defines these subtypes. We analyzed the single-cell gene expression profiles of 5057 cells of anaplastic astrocytoma tissues, 261 cells of diffuse astrocytoma tissues, and 1023 cells of glioblastoma tissues with advanced machine learning methods. In detail, a powerful feature selection method, Monte Carlo feature selection (MCFS) method, was adopted to analyze the gene expression profiles of cells, resulting in a feature list. Then, the incremental feature selection (IFS) method was applied to the obtained feature list, with the help of support vector machine (SVM), to extract key features (genes) and construct an optimal SVM classifier. Several key biomarker genes, such as IGFBP2, IGF2BP3, PRDX1, NOV, NEFL, HOXA10, GNG12, SPRY4, and BCL11A, were identified. In addition, the underlying rules of classifying the three subtypes were produced by Johnson reducer algorithm. We found that in diffuse astrocytoma, PRDX1 is highly expressed, and in glioblastoma, the expression level of PRDX1 is low. These rules revealed the difference among the three subtypes, and how they are formed and transformed. These genes are not only biomarkers for glioma subtypes, but also drug targets that may switch the clinical features or even reverse the tumor progression.
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12
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Huang L, Song Y, Lian J, Wang Z. Allicin inhibits the invasion of lung adenocarcinoma cells by altering tissue inhibitor of metalloproteinase/matrix metalloproteinase balance via reducing the activity of phosphoinositide 3-kinase/AKT signaling. Oncol Lett 2017; 14:468-474. [PMID: 28693193 DOI: 10.3892/ol.2017.6129] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 02/07/2017] [Indexed: 01/11/2023] Open
Abstract
Allicin, the main active principle associated with Allium sativum chemistry, has various antitumor activities. However, to the best of our knowledge, there is no available information to address the anti-invasive effect and associated mechanism in lung adenocarcinoma. In the present study, cell viability assay, cell adhesion assay, western blot analysis, Transwell migration and invasion assays and reverse transcription-quantitative polymerase chain reaction were performed. Allicin was identified to inhibit the adhesion, invasion and migration of lung adenocarcinoma cells in a dose-dependent manner, accompanied by decreasing mRNA and protein levels of matrix metalloproteinase (MMP)-2 and MMP-9. Conversely, the mRNA and protein levels of tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-2 were increased in a dose-dependent manner. Furthermore, it was revealed that allicin treatment significantly suppressed the phosphorylation of AKT (P<0.05), but not the total protein expression of AKT. Combined treatment with LY294002, an inhibitor of phosphoinositide 3-kinase (PI3K)/AKT signaling, and allicin led to the synergistic reduction of MMP-2 and MMP-9 expression, followed by an increase in TIMP-1 and TIMP-2 expression. The invasive capabilities of lung adenocarcinoma cells were also suppressed. However, insulin-like growth factor-1 (an activator of PI3K/AKT signaling) reversed the effects of allicin on cell invasion and expression of MMP-2, MMP-9, TIMP-1 and TIMP-2. The present study concluded that allicin may inhibit invasion of lung adenocarcinoma cells by altering TIMP/MMP balance, via reducing the activity of the PI3K/AKT signaling pathway. This indicated that allicin may be recognized as an anti-invasive agent for lung adenocarcinoma treatment.
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Affiliation(s)
- Ling Huang
- Department of Cardiovascular Surgery, Renmin Hospital, Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Yuanhong Song
- Department of Pathology, The Affiliated Hospital of Jinggangshan University, Jian, Jiangxi 343000, P.R. China
| | - Jianping Lian
- Department of Oncology, The Affiliated Hospital of Jinggangshan University, Jian, Jiangxi 343000, P.R. China
| | - Zhiwei Wang
- Department of Cardiovascular Surgery, Renmin Hospital, Wuhan University, Wuhan, Hubei 430060, P.R. China
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13
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Wang L, Zhu B, Wang S, Wu Y, Zhan W, Xie S, Shi H, Yu R. Regulation of glioma migration and invasion via modification of Rap2a activity by the ubiquitin ligase Nedd4-1. Oncol Rep 2017; 37:2565-2574. [PMID: 28405688 PMCID: PMC5428538 DOI: 10.3892/or.2017.5572] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 10/18/2016] [Indexed: 12/26/2022] Open
Abstract
Νeuronal precursor cell expressed and developmentally downregulated protein (Nedd4-1) is an E3 ubiquitin ligase with critical roles in the pathogenesis of cancer. Herein, we demonstrated that Nedd4-1 protein was upregulated in glioma tissues vs. that in non-cancerous tissues by western blotting and immunohistochemistry. Scratch migration and Transwell chamber assays indicated that downregulation of Nedd4-1 significantly reduced the migration and invasion of the glioma cell lines U251 and U87. Conversely, overexpression of Nedd4-1 obviously enhanced the migratory and invasive capacities in both cell lines. To investigate the role of Nedd4-1 and the intracellular pathways involved, we performed pull-down and co-immunoprecipitation assays, and recognized that Nedd4-1, TNIK and Rap2a formed a complex. Moreover, Nedd4-1 selectively ubiquitinated its specific substrates, the wild-type Rap2a (WT-Rap2a) and dominant-active Rap2a (DA-Rap2a) rather than the dominant-negative Rap2a (DN-Rap2a) in the U251 cells. Subsequently, we demonstrated that Rap2a was robustly ubiquitinated by Nedd4-1 along with the K63-linked, but not the K48-linked ubiquitin chain, which significantly inhibited GTP-Rap2a activity by GST-RalGDS pull-down assay. To further verify whether the ubiquitination of Rap2a by Nedd4-1 regulated the migration and invasion of glioma cells, Nedd4-1, HA-tagged ubiquitin and its mutants as well as WT-Rap2a were co-transfected in the U251 and U87 cell lines. The results confirmed that Nedd4-1 inhibited GTP-Rap2a activity, and promoted the migration and invasion of glioma cells. In brief, our findings demonstrated the important role of Nedd4-1 in regulating the migration and invasion of glioma cells via the Nedd4-1/Rap2a pathway, which may qualify Nedd4-1 as a viable therapeutic target for glioma.
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Affiliation(s)
- Lei Wang
- Insitute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, P.R. China
| | - Bingxin Zhu
- Insitute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, P.R. China
| | - Shiquan Wang
- Insitute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, P.R. China
| | - Yuxuan Wu
- Insitute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, P.R. China
| | - Wenjian Zhan
- Insitute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, P.R. China
| | - Shao Xie
- Insitute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, P.R. China
| | - Hengliang Shi
- Insitute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, P.R. China
| | - Rutong Yu
- Insitute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, P.R. China
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14
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Guo W, Shang DM, Cao JH, Feng K, He YC, Jiang Y, Wang S, Gao YF. Identifying and Analyzing Novel Epilepsy-Related Genes Using Random Walk with Restart Algorithm. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6132436. [PMID: 28255556 PMCID: PMC5309434 DOI: 10.1155/2017/6132436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Accepted: 01/15/2017] [Indexed: 02/07/2023]
Abstract
As a pathological condition, epilepsy is caused by abnormal neuronal discharge in brain which will temporarily disrupt the cerebral functions. Epilepsy is a chronic disease which occurs in all ages and would seriously affect patients' personal lives. Thus, it is highly required to develop effective medicines or instruments to treat the disease. Identifying epilepsy-related genes is essential in order to understand and treat the disease because the corresponding proteins encoded by the epilepsy-related genes are candidates of the potential drug targets. In this study, a pioneering computational workflow was proposed to predict novel epilepsy-related genes using the random walk with restart (RWR) algorithm. As reported in the literature RWR algorithm often produces a number of false positive genes, and in this study a permutation test and functional association tests were implemented to filter the genes identified by RWR algorithm, which greatly reduce the number of suspected genes and result in only thirty-three novel epilepsy genes. Finally, these novel genes were analyzed based upon some recently published literatures. Our findings implicate that all novel genes were closely related to epilepsy. It is believed that the proposed workflow can also be applied to identify genes related to other diseases and deepen our understanding of the mechanisms of these diseases.
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Affiliation(s)
- Wei Guo
- Department of Outpatient, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Dong-Mei Shang
- Department of Outpatient, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Jing-Hui Cao
- Department of Neurosurgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Kaiyan Feng
- Department of Computer Science, Guangdong AIB Polytechnic, Guangzhou 510507, China
| | - Yi-Chun He
- Department of Neurosurgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Yang Jiang
- Department of Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - ShaoPeng Wang
- School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Yu-Fei Gao
- Department of Neurosurgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
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15
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Liang J, Wang P, Xie S, Wang W, Zhou X, Hu J, Shi Q, Zhang X, Yu R. Bmi-1 regulates the migration and invasion of glioma cells through p16. Cell Biol Int 2014; 39:283-90. [PMID: 25262972 DOI: 10.1002/cbin.10390] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 07/31/2014] [Indexed: 11/12/2022]
Abstract
Bmi-1 is involved in the development of several human cancers; however, its significance in glioma progression remains largely unknown. We report that downregulation of Bmi-1 clearly reduces glioma cell migration and invasion. Downregulation of Bmi-1 promotes the expression of the tumor suppressor p16, which is important in glioma cell motility. Reduction in glioma cell invasion due to downregulation of Bmi-1 could be rescued by p16 downregulation. These results show that Bmi-1 contributes to the motility of glioma cells by regulating the expression of p16.
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Affiliation(s)
- Jun Liang
- Department of Neurosurgery, Affiliated Hospital of Xuzhou Medical College, 99 West Huai-hai Road, Xuzhou, Jiangsu, 221002, P. R. China; Lab of Neurosurgery, Xuzhou Medical College, Xuzhou, Jiangsu, P. R. China
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