101
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Teng L, Chen Y, Cao Y, Wang W, Xu Y, Wang Y, Lv J, Li C, Su Y. Overexpression of ATP citrate lyase in renal cell carcinoma tissues and its effect on the human renal carcinoma cells in vitro. Oncol Lett 2018; 15:6967-6974. [PMID: 29725424 PMCID: PMC5920499 DOI: 10.3892/ol.2018.8211] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 02/27/2018] [Indexed: 12/19/2022] Open
Abstract
ATP citrate lyase (ACLY) is a key enzyme of lipogenesis in cells. However, ACLY expression in renal cell carcinoma (RCC) and its association with clinicopathological parameters remain unclear. The present study aimed to evaluate ACLY expression levels in RCC and adjacent normal tissues. This study included 33 patients with clear cell RCC (ccRCC). ACLY protein was assayed using immunohistochemistry and western blotting methods. ACLY mRNA expression was determined by reverse transcription-quantitative polymerase chain reaction. Serum ACLY concentrations were measured using the ELISA. Compared with adjacent normal tissues, significantly higher levels of ACLY protein expression were observed in all of the ccRCC tissues (P<0.05). ACLY protein levels were positively associated with the T stage and nuclear grade of RCC. ACLY immunostaining was located in the cytoplasm and nucleus. ACLY protein levels and ACC1 mRNA expression in RCC tissues were significantly higher compared with that in adjacent normal tissues (P<0.05). There were no significant differences in serum ACLY concentrations between patients with RCC and health controls (P>0.05). Preliminary evaluation of ACLY function showed that ACLY small interfering RNA downregulation inhibited RCC cell proliferation and migration, but promoted RCC cell apoptosis. ACLY may be a novel biomarker for the evaluation of biological aggressiveness and may be a potential target for RCC treatment.
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Affiliation(s)
- Lichen Teng
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
| | - Yongsheng Chen
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
| | - Yan Cao
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
| | - Wentao Wang
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
| | - Yongpeng Xu
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
| | - Yanjie Wang
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
| | - Jiayin Lv
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
| | - Changfu Li
- Department of Urology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
| | - Yajuan Su
- Department of Laboratory, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang 150080, P.R. China
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102
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Chen M, Hu W, Xiong CL, Qu Z, Yin CQ, Wang YH, Luo CL, Guan Q, Yuan CH, Wang FB. miR-22 targets YWHAZ to inhibit metastasis of hepatocellular carcinoma and its down-regulation predicts a poor survival. Oncotarget 2018; 7:80751-80764. [PMID: 27811373 PMCID: PMC5348352 DOI: 10.18632/oncotarget.13037] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 10/28/2016] [Indexed: 02/06/2023] Open
Abstract
Many miRNAs are associated with the carcinogenesis of hepatocellular carcinoma (HCC) and some exhibit potential prognostic value. In this study, to further confirm the prognostic value of miRNAs in HCC, we employed miRNA-sequencing data of tumor tissues of 372 HCC patients released by The Cancer Genome Atlas (TCGA) and identified 3 miRNAs including miR-22, miR-9-1 and miR-9-2 could be used as independent predictors for HCC prognostic evaluation. As a tumor-suppressive miRNA, miR-22 was down-regulated in HCC tissues. This down-regulation correlated with tumor vascular invasion, Edmondson–Steiner grade, TNM stage, and AFP level. Moreover, biofunctional investigations revealed that miR-22 significantly attenuated cellular proliferation, migration and invasion of HCC cells. Additionally, through gene expression profiles and bioinformatics analysis, YWHAZ was identified to be a direct target of miR-22 and its overexpression partially counteracted the inhibitory effects of miR-22 on HCC cells. Finally, molecular studies further confirmed that miR-22 promoted the accumulation of FOXO3a in nucleus and subsequently reversed invasive phenotype of HCC cells by repressing YWHAZ-mediated AKT phosphorylation. Taken together, these data demonstrate that miR-22 exhibits tumor-suppressive effects in HCC cells by regulating YWHAZ/AKT/FOXO3a signaling and might be used as an independent prognostic indicator for HCC patients.
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Affiliation(s)
- Ming Chen
- Department of Blood Transfusion, Zhongnan Hospital of Wuhan University, Wuchang District, Wuhan 430071, P.R. China
| | - Wei Hu
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuchang District, Wuhan 430071, P.R. China
| | - Chen-Ling Xiong
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuchang District, Wuhan 430071, P.R. China
| | - Zhen Qu
- Guangdong Food and Drug Vocational College, Guangzhou 510520, P.R. China
| | - Chang-Qing Yin
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuchang District, Wuhan 430071, P.R. China
| | - Yu-Hui Wang
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuchang District, Wuhan 430071, P.R. China
| | - Chang-Liang Luo
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuchang District, Wuhan 430071, P.R. China
| | - Qing Guan
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuchang District, Wuhan 430071, P.R. China
| | - Chun-Hui Yuan
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuchang District, Wuhan 430071, P.R. China
| | - Fu-Bing Wang
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuchang District, Wuhan 430071, P.R. China
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103
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Maan M, Peters JM, Dutta M, Patterson AD. Lipid metabolism and lipophagy in cancer. Biochem Biophys Res Commun 2018; 504:582-589. [PMID: 29438712 DOI: 10.1016/j.bbrc.2018.02.097] [Citation(s) in RCA: 149] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 02/09/2018] [Indexed: 12/21/2022]
Abstract
The tumor microenvironment can be hypoxic, acidic, and deficient in nutrients, thus causing the metabolism of tumor cells as well as the neighboring stromal cells to be remodelled to facilitate tumor survival, proliferation, and metastasis. Abnormal tumor lipid metabolism is a fairly new field, which has received attention in the past few years. Cross-talk between tumor cells and tumor-associated stromal cells modulates the high metabolic needs of the tumor. Fatty acid turnover is high in tumor cells to meet the energy as well as synthetic requirements of the growing tumor. Lipolysis of lipids stored in lipid droplets was earlier considered to be solely carried out by cytosolic lipases. However recent studies demonstrate that lipophagy (autophagic degradation of lipids by acidic lipases) serves as an alternate pathway for the degradation of lipid droplets. Involvement of lipophagy in lipid turnover makes it a crucial player in tumorigenesis and metastasis. In this review we discuss the metabolic reprogramming of tumor cells with special focus on lipid metabolism. We also address the lipid turnover machinery in the tumor cell, especially the lipophagic pathway. Finally, we integrate the current understanding of lipophagy with tumor lipid metabolism.
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Affiliation(s)
- Meenu Maan
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Jeffrey M Peters
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary & Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, United States
| | - Mainak Dutta
- Department of Biotechnology, BITS Pilani-Dubai Campus, Academic City, Dubai 345055, United Arab Emirates.
| | - Andrew D Patterson
- Center for Molecular Toxicology and Carcinogenesis, Department of Veterinary & Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, United States.
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104
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Laengsri V, Kerdpin U, Plabplueng C, Treeratanapiboon L, Nuchnoi P. Cervical Cancer Markers: Epigenetics and microRNAs. Lab Med 2018; 49:97-111. [DOI: 10.1093/labmed/lmx080] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Vishuda Laengsri
- Center for Research & Innovation, Mahidol University, Bangkok, Thailand
- Department of Clinical Microscopy, Mahidol University, Bangkok, Thailand
| | - Usanee Kerdpin
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok, Thailand
| | - Chotiros Plabplueng
- Center for Research & Innovation, Mahidol University, Bangkok, Thailand
- Department of Clinical Microscopy, Mahidol University, Bangkok, Thailand
| | - Lertyot Treeratanapiboon
- Department of Community Medical Technology, Faculty of Medical Technology, Mahidol University, Bangkok, Thailand
| | - Pornlada Nuchnoi
- Center for Research & Innovation, Mahidol University, Bangkok, Thailand
- Department of Clinical Microscopy, Mahidol University, Bangkok, Thailand
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105
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Combination of Mitochondrial and Plasma Membrane Citrate Transporter Inhibitors Inhibits De Novo Lipogenesis Pathway and Triggers Apoptosis in Hepatocellular Carcinoma Cells. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3683026. [PMID: 29546056 PMCID: PMC5818947 DOI: 10.1155/2018/3683026] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/23/2017] [Accepted: 12/03/2017] [Indexed: 12/27/2022]
Abstract
Increased expression levels of both mitochondrial citrate transporter (CTP) and plasma membrane citrate transporter (PMCT) proteins have been found in various cancers. The transported citrates by these two transporter proteins provide acetyl-CoA precursors for the de novo lipogenesis (DNL) pathway to support a high rate of cancer cell viability and development. Inhibition of the DNL pathway promotes cancer cell apoptosis without apparent cytotoxic to normal cells, leading to the representation of selective and powerful targets for cancer therapy. The present study demonstrates that treatments with CTP inhibitor (CTPi), PMCT inhibitor (PMCTi), and the combination of CTPi and PMCTi resulted in decreased cell viability in two hepatocellular carcinoma cell lines (HepG2 and HuH-7). Treatment with citrate transporter inhibitors caused a greater cytotoxic effect in HepG2 cells than in HuH-7 cells. A lower concentration of combined CTPi and PMCTi promotes cytotoxic effect compared with either of a single compound. An increased cell apoptosis and an induced cell cycle arrest in both cell lines were reported after administration of the combined inhibitors. A combination treatment exhibits an enhanced apoptosis through decreased intracellular citrate levels, which consequently cause inhibition of fatty acid production in HepG2 cells. Apoptosis induction through the mitochondrial-dependent pathway was found as a consequence of suppressed carnitine palmitoyl transferase-1 (CPT-1) activity and enhanced ROS generation by combined CTPi and PMCTi treatment. We showed that accumulation of malonyl-CoA did not correlate with decreasing CPT-1 activity. The present study showed that elevated ROS levels served as an inhibition on Bcl-2 activity that is at least in part responsible for apoptosis. Moreover, inhibition of the citrate transporter is selectively cytotoxic to HepG2 cells but not in primary human hepatocytes, supporting citrate-mediating fatty acid synthesis as a promising cancer therapy.
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106
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He Y, Gao M, Cao Y, Tang H, Liu S, Tao Y. Nuclear localization of metabolic enzymes in immunity and metastasis. Biochim Biophys Acta Rev Cancer 2017; 1868:359-371. [PMID: 28757126 DOI: 10.1016/j.bbcan.2017.07.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/19/2017] [Accepted: 07/26/2017] [Indexed: 02/07/2023]
Abstract
Metabolism is essential to all living organisms that provide cells with energy, regulators, building blocks, enzyme cofactors and signaling molecules, and is in tune with nutritional conditions and the function of cells to make the appropriate developmental decisions or maintain homeostasis. As a fundamental biological process, metabolism state affects the production of multiple metabolites and the activation of various enzymes that participate in regulating gene expression, cell apoptosis, cancer progression and immunoreactions. Previous studies generally focus on the function played by the metabolic enzymes in the cytoplasm and mitochondrion. In this review, we conclude the role of them in the nucleus and their implications for cancer progression, immunity and metastasis.
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Affiliation(s)
- Yuchen He
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, China; Cancer Research Institute, School of Basic Medicine, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China; Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Menghui Gao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, China; Cancer Research Institute, School of Basic Medicine, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China; Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Yiqu Cao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, China; Cancer Research Institute, School of Basic Medicine, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China; Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Haosheng Tang
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, China; Cancer Research Institute, School of Basic Medicine, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China; Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Shuang Liu
- Institute of Medical Sciences, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, China
| | - Yongguang Tao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, China; Cancer Research Institute, School of Basic Medicine, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China; Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China.
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107
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Li M, Sha Y, Zhang X. MiR-22 functions as a biomarker and regulates cell proliferation, cycle, apoptosis, migration and invasion in renal cell carcinoma. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:11425-11437. [PMID: 31966498 PMCID: PMC6966068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 10/12/2017] [Indexed: 06/10/2023]
Abstract
It is well known that microRNAs (miRNAs) are associated with tumor occurrence and development, and the functions of microRNA-22 (miR-22) have been investigated in numerous kinds of cancer. However, the significance of miR-22 in renal cell carcinoma (RCC) has not been fully explored. In this study, we found that miR-22 was down-regulated both in serum and tissues of RCC patients by using real time quantitative PCR (RT-qPCR) analyses. In addition, miR-22 was negatively associated with hepatic metastatic sites and lymphatic metastasis, as well as the clinical stages and prognosis. Moreover, the expression of miR-22 could be increased though surgical treatment in serum of RCC patients. Functional studies were performed to investigate the role of miR-22 in the progression of RCC. Data suggested that overexpression of miR-22 inhibited cell proliferation, migration and invasion in Caki-1 cells, whereas blockage of miR-22 could reverse these oncogenic effects. We also identified erb-b2 receptor tyrosine kinase (ERBB3) was a novel target of miR-22 in RCC cells. Consequently, our work provides evidence that the down-regulation of miR-22 expression contributed to RCC. And miR-22 may be a potential molecule biomarker for diagnose and therapy evaluation in RCC.
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Affiliation(s)
- Minxia Li
- Clinical Laboratory, Danyang People’s Hospital of Jiangsu ProvinceZhenjiang 212300, Jiangsu Province, China
| | - Yabin Sha
- Blood Purification Center, First People’s Hospital of JinanJinan 250011, Shandong Province, China
| | - Xiuying Zhang
- Clinical Laboratory, Changzhou Third People’s HospitalChangzhou 213001, Jiangsu Province, China
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108
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Sreedhar A, Zhao Y. Dysregulated metabolic enzymes and metabolic reprogramming in cancer cells. Biomed Rep 2017; 8:3-10. [PMID: 29399334 PMCID: PMC5772474 DOI: 10.3892/br.2017.1022] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 08/17/2017] [Indexed: 12/21/2022] Open
Abstract
Tumor cells carry various genetic and metabolic alterations, which directly contribute to their growth and malignancy. Links between metabolism and cancer are multifaceted. Metabolic reprogramming, such as enhanced aerobic glycolysis, mutations in the tricarboxylic acid (TCA) cycle metabolic enzymes, and dependence on lipid and glutamine metabolism are key characteristics of cancer cells. Understanding these metabolic alterations is crucial for development of novel anti-cancer therapeutic strategies. In the present review, the broad importance of metabolism in tumor biology is discussed, and the current knowledge on dysregulated metabolic enzymes involved in the vital regulatory steps of glycolysis, the TCA cycle, the pentose phosphate pathway, and lipid, amino acid, and mitochondrial metabolism pathways are reviewed.
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Affiliation(s)
- Annapoorna Sreedhar
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center Shreveport, LA 71130-3932, USA
| | - Yunfeng Zhao
- Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center Shreveport, LA 71130-3932, USA
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109
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Yang Y, Fang S. Small non-coding RNAs-based bone regulation and targeting therapeutic strategies. Mol Cell Endocrinol 2017; 456:16-35. [PMID: 27888003 PMCID: PMC7116989 DOI: 10.1016/j.mce.2016.11.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 11/06/2016] [Accepted: 11/21/2016] [Indexed: 01/08/2023]
Abstract
Small non-coding RNAs, which are 20-25 nucleotide ribonucleic acids, have emerged as an important transformation in the biological evolution over almost three decades. microRNAs (miRNAs) and short interfering RNAs (siRNAs) are two significant categories of the small RNAs that exert important effects on bone endocrinology and skeletology. Therefore, clarifying the expression and function of these important molecules in bone endocrine physiology and pathology is of great significance for improving their potential therapeutic value for metabolism-associated bone diseases. In the present review, we highlight the recent advances made in understanding the function and molecular mechanism of these small non-coding RNAs in bone metabolism, especially their potentially therapeutic values in bone-related diseases.
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Affiliation(s)
- Ying Yang
- Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai, China
| | - Sijie Fang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai, China.
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110
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Inwood S, Buehler E, Betenbaugh M, Lal M, Shiloach J. Identifying HIPK1 as Target of miR-22-3p Enhancing Recombinant Protein Production From HEK 293 Cell by Using Microarray and HTP siRNA Screen. Biotechnol J 2017; 13. [PMID: 28987030 DOI: 10.1002/biot.201700342] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 09/11/2017] [Indexed: 01/20/2023]
Abstract
Protein expression from human embryonic kidney cells (HEK 293) is an important tool for structural and clinical studies. It is previously shown that microRNAs (small, noncoding RNAs) are effective means for improved protein expression from these cells, and by conducting a high-throughput screening of the human microRNA library, several microRNAs are identified as potential candidates for improving expression. From these, miR-22-3p is chosen for further study since it increased the expression of luciferase, two membrane proteins and a secreted fusion protein with minimal effect on the cells' growth and viability. Since each microRNA can interact with several gene targets, it is of interest to identify the repressed genes for understanding and exploring the improved expression mechanism for further implementation. Here, the authors describe a novel approach for identification of the target genes by integrating the differential gene expression analysis with information obtained from our previously conducted high-throughput siRNA screening. The identified genes were validated as being involved in improving luciferase expression by using siRNA and qRT-PCR. Repressing the target gene, HIPK1, is found to increase luciferase and GPC3 expression 3.3- and 2.2-fold, respectively.
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Affiliation(s)
- Sarah Inwood
- Biotechnology Core Laboratory NIDDK, NIH, Bethesda, Maryland 20892, USA.,Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Eugen Buehler
- Chemical Genomics Center, National Center for Advancing Translational Sciences, NIH, Rockville, MD 20850
| | - Michael Betenbaugh
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Madhu Lal
- Chemical Genomics Center, National Center for Advancing Translational Sciences, NIH, Rockville, MD 20850
| | - Joseph Shiloach
- Biotechnology Core Laboratory NIDDK, NIH, Bethesda, Maryland 20892, USA
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111
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Xi LC, Ji YX, Yin D, Zhao ZX, Huang SC, Yu SL, Liu BY, Li HY. Effects of Dermatopontin gene silencing on apoptosis and proliferation of osteosarcoma MG‑63 cells. Mol Med Rep 2017; 17:422-427. [PMID: 29115446 DOI: 10.3892/mmr.2017.7866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 09/19/2017] [Indexed: 11/05/2022] Open
Abstract
The present study aimed to investigate the effect of Dermatopontin (DPT) gene silencing on the apoptosis and proliferation of osteosarcoma MG‑63 cells. Three eukaryotic expression vectors of short hairpin (sh)RNA fragments targeting different loci of DPT were designed and transfected into an osteosarcoma cell line MG‑63. The cells were assigned to a blank, shRNA‑control, DPT‑shRNA‑a, DPT‑shRNA‑b or DPT‑shRNA‑c group. The shRNA with the highest silencing efficiency was screened using reverse transcription‑quantitative polymerase chain reaction and western blotting. The screened shRNA was transfected into MG‑63 cells. The proliferation, cell cycle and apoptosis of MG‑63 cells were measured using a Cell Counting Kit‑8 assay, flow cytometry and Annexin V‑fluorescein isothiocyanate assay. The recombinant plasmids containing DPT shRNA were successfully constructed. DPT gene silencing was able to significantly reduce the proliferation rate of MG‑63 cells (P<0.05). The proportion of cells in the G0/G1 phase and in the G2/M phase increased significantly (both P<0.05), while the proportion of cells in the S phase decreased (P<0.05). Furthermore, the cell apoptosis rate increased significantly (P<0.05). These results demonstrate that DPT gene silencing is able to reduce the proliferation of MG‑63 cells, slow down cell cycle progression and promote apoptosis, hence may become a novel target for the treatment of osteosarcoma.
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Affiliation(s)
- Li-Cheng Xi
- Department of Orthopedics, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, P.R. China
| | - Yun-Xi Ji
- Department of Orthopedics, Zhejiang Provincial Hospital of TCM, Hangzhou, Zhejiang 310000, P.R. China
| | - Dong Yin
- Department of Orthopedics, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, P.R. China
| | - Zi-Xing Zhao
- Department of Orthopedics, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, P.R. China
| | - Si-Cheng Huang
- Department of Orthopedics, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, P.R. China
| | - Shao-Lin Yu
- Department of Orthopedics, Ji'an Central Hospital, Ji'an, Jiangxi 343000, P.R. China
| | - Bo-Yu Liu
- Department of Orthopedics, Liuzhou Work's Hospital, Liuzhou, Guangxi 530021, P.R. China
| | - Hong-Yu Li
- Department of Orthopedics, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, P.R. China
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112
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Di Ciaula A, Wang DQH, Molina-Molina E, Lunardi Baccetto R, Calamita G, Palmieri VO, Portincasa P. Bile Acids and Cancer: Direct and Environmental-Dependent Effects. Ann Hepatol 2017; 16:s87-s105. [PMID: 29080344 DOI: 10.5604/01.3001.0010.5501] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 09/06/2017] [Indexed: 02/05/2023]
Abstract
Bile acids (BAs) regulate the absorption of fat-soluble vitamins, cholesterol and lipids but have also a key role as singalling molecules and in the modulation of epithelial cell proliferation, gene expression and metabolism. These homeostatic pathways, when disrupted, are able to promote local inflammation, systemic metabolic disorders and, ultimately, cancer. The effect of hydrophobic BAs, in particular, can be linked with cancer in several digestive (mainly oesophagus, stomach, liver, pancreas, biliary tract, colon) and extra-digestive organs (i.e. prostate, breast) through a complex series of mechanisms including direct oxidative stress with DNA damage, apoptosis, epigenetic factors regulating gene expression, reduced/increased expression of nuclear receptors (mainly farnesoid X receptor, FXR) and altered composition of gut microbiota, also acting as a common interface between environmental factors (including diet, lifestyle, exposure to toxics) and the molecular events promoting cancerogenesis. Primary prevention strategies (i.e. changes in dietary habits and lifestyle, reduced exposure to environmental toxics) mainly able to modulate gut microbiota and the epigenome, and the therapeutic use of hydrophilic BAs to counterbalance the negative effects of the more hydrophobic BAs might be, in the near future, part of useful tools for cancer prevention and management.
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Affiliation(s)
| | - David Q-H Wang
- Department of Medicine, Division of Gastroenterology and Liver Diseases, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Emilio Molina-Molina
- Clinica Medica "A. Murri", Department of Biomedical Sciences & Human Oncology, University of Bari Medical School, Bari, Italy
| | - Raquel Lunardi Baccetto
- Clinica Medica "A. Murri", Department of Biomedical Sciences & Human Oncology, University of Bari Medical School, Bari, Italy
| | - Giuseppe Calamita
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari. Italy
| | - Vincenzo O Palmieri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari. Italy
| | - Piero Portincasa
- Clinica Medica "A. Murri", Department of Biomedical Sciences & Human Oncology, University of Bari Medical School, Bari, Italy
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113
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Li DY, Chen WJ, Luo L, Wang YK, Shang J, Zhang Y, Chen G, Li SK. Prospective lncRNA-miRNA-mRNA regulatory network of long non-coding RNA LINC00968 in non-small cell lung cancer A549 cells: A miRNA microarray and bioinformatics investigation. Int J Mol Med 2017; 40:1895-1906. [PMID: 29039552 DOI: 10.3892/ijmm.2017.3187] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 10/05/2017] [Indexed: 11/05/2022] Open
Abstract
Accumulating evidence suggests that the dysregulation of long non-coding RNAs (lncRNAs) serves vital roles in the incidence and progression of lung cancer. However, the molecular mechanisms of LINC00968, a recently identified lncRNA, remain unknown. The objective of present study was to investigate the role of a prospective lncRNA-miRNA‑mRNA network regulated by LINC00968 in non-small cell lung cancer cells. Following the transfection of lentiviruses carrying LINC00968 into A549 cells, the microRNA (miRNA) expression profile of the cells in response to the overexpression of LINC00968 was detected using an miRNA microarray. Five differentially expressed miRNAs (DEMs) with LINC00968 overexpression were obtained, including miR-9-3p, miR‑22-5p, miR-668-3p, miR‑3675-3p and miR-4536-3p. Five target prediction algorithms and three target validation algorithms were used to obtain 1,888 prospective target genes of the five DEMs. The result of Gene Ontology analysis suggested that these five DEMs were involved in complex cellular pathways, which included intracellular transport, organelle lumen and nucleotide binding. Furthermore, analysis of Kyoto Encyclopedia of Genes and Genomes pathways indicated that the five DEMs were important regulators in the adherens junction and focal adhesion. An lncRNA-miRNA-mRNA regulatory network and a protein-protein interaction network were then constructed. Eventually, a prospective lncRNA‑miRNA-mRNA regulatory network of LINC00968, three miRNAs (miR-9, miR-22 and miR-4536) and two genes (polo-like kinase 1 and exportin-1) was obtained following validation in the Cancer Genome Atlas database. These results may provide novel insights to support future research into lncRNA in lung cancer.
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Affiliation(s)
- Dong-Yao Li
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Wen-Jie Chen
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Lei Luo
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yong-Kun Wang
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Jun Shang
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yu Zhang
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Gang Chen
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Shi-Kang Li
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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114
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Zhang L, Chen B, Ding D. Decreased microRNA-22 is associated with poor prognosis in cervical cancer. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:9515-9520. [PMID: 31966827 PMCID: PMC6965895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 07/14/2017] [Indexed: 06/10/2023]
Abstract
Cervical cancer is one of the most lethal gynecological malignancy. Aberrant expression of microRNAs (miRNAs) is associated with carcinogenesis of cervical cancer. The aim of current study was to elucidate the clinical significance of miR-22 in patients with cervical cancer. The expression levels of miR-22 in cervical intraepithelial neoplasia (CIN) and cervical cancer tissues as well as cervical cancer cell lines were quantified using real-time PCR. Then the potential prognostic value of the miR-22 was assessed. Our results showed that the expression level of miR-22 was significantly lower in cervical cancer tissues and cell lines. miR-22 levels were inversely correlated clinical stage both in CIN and cervical cancer. In addition, low expression of miR-22 was significantly associated with larger tumor size, presence of lymph node metastasis, and advanced tumor stage. Moreover, the patients expressing low levels of miR-22 had poorer five year overall survival and disease free survival. Multivariate analysis identified miR-22 as an independent prognostic factor for cervical cancer patients' overall survival. Taken together, we demonstrate that the miR-22 may serve as a novel therapeutic target and prognostic marker in patients with cervical cancer.
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Affiliation(s)
- Lu Zhang
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical UniversityBeijing, China
| | - Bin Chen
- Department of Gynecology, Haidian Maternal & Child Health HospitalBeijing, China
| | - Ding Ding
- Department of Gynecology, Amcare Women’s and Children’s HospitalBeijing, China
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115
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Taguchi YH. Tensor decomposition-based unsupervised feature extraction applied to matrix products for multi-view data processing. PLoS One 2017; 12:e0183933. [PMID: 28841719 PMCID: PMC5571984 DOI: 10.1371/journal.pone.0183933] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 08/04/2017] [Indexed: 01/17/2023] Open
Abstract
In the current era of big data, the amount of data available is continuously increasing. Both the number and types of samples, or features, are on the rise. The mixing of distinct features often makes interpretation more difficult. However, separate analysis of individual types requires subsequent integration. A tensor is a useful framework to deal with distinct types of features in an integrated manner without mixing them. On the other hand, tensor data is not easy to obtain since it requires the measurements of huge numbers of combinations of distinct features; if there are m kinds of features, each of which has N dimensions, the number of measurements needed are as many as Nm, which is often too large to measure. In this paper, I propose a new method where a tensor is generated from individual features without combinatorial measurements, and the generated tensor was decomposed back to matrices, by which unsupervised feature extraction was performed. In order to demonstrate the usefulness of the proposed strategy, it was applied to synthetic data, as well as three omics datasets. It outperformed other matrix-based methodologies.
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Affiliation(s)
- Y-h. Taguchi
- Department of Physics, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
- * E-mail:
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116
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Anderson NM, Mucka P, Kern JG, Feng H. The emerging role and targetability of the TCA cycle in cancer metabolism. Protein Cell 2017; 9:216-237. [PMID: 28748451 PMCID: PMC5818369 DOI: 10.1007/s13238-017-0451-1] [Citation(s) in RCA: 299] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 06/26/2017] [Indexed: 02/08/2023] Open
Abstract
The tricarboxylic acid (TCA) cycle is a central route for oxidative phosphorylation in cells, and fulfills their bioenergetic, biosynthetic, and redox balance requirements. Despite early dogma that cancer cells bypass the TCA cycle and primarily utilize aerobic glycolysis, emerging evidence demonstrates that certain cancer cells, especially those with deregulated oncogene and tumor suppressor expression, rely heavily on the TCA cycle for energy production and macromolecule synthesis. As the field progresses, the importance of aberrant TCA cycle function in tumorigenesis and the potentials of applying small molecule inhibitors to perturb the enhanced cycle function for cancer treatment start to evolve. In this review, we summarize current knowledge about the fuels feeding the cycle, effects of oncogenes and tumor suppressors on fuel and cycle usage, common genetic alterations and deregulation of cycle enzymes, and potential therapeutic opportunities for targeting the TCA cycle in cancer cells. With the application of advanced technology and in vivo model organism studies, it is our hope that studies of this previously overlooked biochemical hub will provide fresh insights into cancer metabolism and tumorigenesis, subsequently revealing vulnerabilities for therapeutic interventions in various cancer types.
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Affiliation(s)
- Nicole M Anderson
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA, 19104-6160, USA.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Patrick Mucka
- Departments of Pharmacology and Medicine, The Center for Cancer Research, Section of Hematology and Medical Oncology, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Joseph G Kern
- Program in Biomedical Sciences, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Hui Feng
- Departments of Pharmacology and Medicine, The Center for Cancer Research, Section of Hematology and Medical Oncology, Boston University School of Medicine, Boston, MA, 02118, USA.
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117
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Chen T, Li H. Fatty acid metabolism and prospects for targeted therapy of cancer. EUR J LIPID SCI TECH 2017. [DOI: 10.1002/ejlt.201600366] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tingting Chen
- West China College of Basic and Forensic MedicineSichuan UniversityChengduP. R. China
| | - Hua Li
- West China College of Basic and Forensic MedicineSichuan UniversityChengduP. R. China
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118
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Jiang Z, Jiang C, Yu C, Fang J. MicroRNA-208b inhibits human osteosarcoma progression by targeting ROR2. Tumour Biol 2017; 39:1010428317705751. [PMID: 28618961 DOI: 10.1177/1010428317705751] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Zhe Jiang
- Yanbian University Medical College, Yanji, China
- Department of Orthopaedics, Jilin Central Hospital, Jilin City, China
| | - Chunshan Jiang
- Department of Clinical Laboratory, Yanbian University Hospital, Yanji, China
| | - Chonglong Yu
- Department of Orthopaedics, Jilin Central Hospital, Jilin City, China
| | - Jinnv Fang
- Yanbian University Medical College, Yanji, China
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119
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Luan X, Wang Y. Long non-coding RNA XLOC_006390 promotes cervical cancer proliferation and metastasis through the regulation of SET domain containing 8. Oncol Rep 2017; 38:159-166. [PMID: 28534991 DOI: 10.3892/or.2017.5663] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 10/24/2016] [Indexed: 11/06/2022] Open
Abstract
The long non-coding RNA (lncRNA) XLOC_006390 is increased in various human cancer tissues and it plays important roles in cell growth and migration. However, the role of lncRNA XLOC_006390 in the progression and metastasis of cervical cancer has not been evaluated and remains unclear. In the present study, we hypothesized that lncRNA XLOC_006390 is also increased in cervical cancer, and upregulation of lncRNA XLOC_006390 contributes to cervical cancer metastasis. The expression of lncRNA XLOC_006390 in cervical cancer tissues and cell lines was analyzed using quantitative reverse-transcription-polymerase chain reaction (qRT-PCR). RNA interference approach and an overexpression system were used to investigate the cellular functions of XLOC_006390 and SET domain containing 8 (SET8). Cell Counting Kit-8 (CCK-8) assay was performed to detect cell proliferation. Cell migration and invasion abilities were evaluated by Transwell assays. Western blotting and immunofluorescence were performed to detect SET8 protein expression. The results revealed that XLOC_006390 was increased in cervical cancer tissues. Patients with high XLOC_006390 expression were associated with FIGO stages III and IV (P=0.0170), lymphatic metastasis (P=0.0078) and distant metastasis (P=0.0025). Furthermore, SET8 was also increased in cervical cancer tissues and its expression was positively associated with XLOC_006390, and XLOC_006390 regulated SET8 expression. In addition, knockdown or overexpression of XLOC_006390 and SET8 expression suppressed or promoted cervical cancer cell proliferation, migration and invasion in vitro, respectively. In conclusion, our data suggest that lncRNA XLOC_006390 promotes cervical cancer cell growth and metastasis through the regulation of SET8, at least partly, which indicate the critical roles of XLOC_006390 and SET8 in cervical cancer progression and metastasis.
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Affiliation(s)
- Xiaotian Luan
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Yankui Wang
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
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120
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MicroRNAs as Key Effectors in the p53 Network. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 333:51-90. [PMID: 28729028 DOI: 10.1016/bs.ircmb.2017.04.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The guardian of the genome p53 is embedded in a fine-spun network of MicroRNAs. p53 is able to activate or repress directly the transcription of MicroRNAs that are participating in the tumor-suppressive mission of p53. On the other hand, the expression of p53 is under tight control of MicroRNAs that are either targeting directly p53 or factors that are modifying its protein level or activity. Although the most important function of p53 is suggested to be transcriptional regulation, there are several nontranscriptional functions described. One of those regards the modulation of MicroRNA biogenesis. Wild-type p53 is increasing the maturation of selected MicroRNAs from the primary transcript to the precursor MiRNA by interacting with the Microprocessor complex. Furthermore, p53 is modulating the mRNA accessibility for certain MicroRNAs by association with the RISC complex and transcriptional regulation of RNA-binding proteins. In this way p53 is able to remodel the MiRNA-mRNA interaction network. As wild-type p53 is employing MicroRNAs to suppress cancer development, gain-of-function mutant p53 proteins use MicroRNAs to confer oncogenic properties like chemoresistance and the ability to drive metastasis. Like its wild-type counterpart mutant p53 is able to regulate MicroRNAs transcriptionally and posttranscriptionally. Mutant p53 affects the MiRNA processing at two cleavage steps through interfering with the Microprocessor complex and by downregulating Dicer and KSRP, a modulator of MiRNA biogenesis. Thus, MicroRNAs are essential components in the p53 pathway, contributing substantially to combat or enhance tumor development depending on the wild-type or mutant p53 context.
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121
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Luo X, Cheng C, Tan Z, Li N, Tang M, Yang L, Cao Y. Emerging roles of lipid metabolism in cancer metastasis. Mol Cancer 2017; 16:76. [PMID: 28399876 PMCID: PMC5387196 DOI: 10.1186/s12943-017-0646-3] [Citation(s) in RCA: 386] [Impact Index Per Article: 55.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/03/2017] [Indexed: 12/16/2022] Open
Abstract
Cancer cells frequently display fundamentally altered cellular metabolism, which provides the biochemical foundation and directly contributes to tumorigenicity and malignancy. Rewiring of metabolic programmes, such as aerobic glycolysis and increased glutamine metabolism, are crucial for cancer cells to shed from a primary tumor, overcome the nutrient and energy deficit, and eventually survive and form metastases. However, the role of lipid metabolism that confers the aggressive properties of malignant cancers remains obscure. The present review is focused on key enzymes in lipid metabolism associated with metastatic disease pathogenesis. We also address the function of an important membrane structure-lipid raft in mediating tumor aggressive progression. We enumerate and integrate these recent findings into our current understanding of lipid metabolic reprogramming in cancer metastasis accompanied by new and exciting therapeutic implications.
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Affiliation(s)
- Xiangjian Luo
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China. .,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, China. .,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, Hunan, 410078, China.
| | - Can Cheng
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, Hunan, 410078, China
| | - Zheqiong Tan
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, Hunan, 410078, China
| | - Namei Li
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, Hunan, 410078, China
| | - Min Tang
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, Hunan, 410078, China
| | - Lifang Yang
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, Hunan, 410078, China
| | - Ya Cao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan, 410078, China. .,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan, 410078, China. .,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, Hunan, 410078, China.
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122
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Gross N, Kropp J, Khatib H. Sexual Dimorphism of miRNAs Secreted by Bovine In vitro-produced Embryos. Front Genet 2017; 8:39. [PMID: 28421107 PMCID: PMC5378762 DOI: 10.3389/fgene.2017.00039] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 03/20/2017] [Indexed: 01/29/2023] Open
Abstract
Sexual dimorphism of bovine blastocysts has previously been observed through differences in development, cell death, metabolism, telomere length, DNA methylation, and transcriptomics. However, dimorphism in the secretion of miRNAs to culture media has not yet been evaluated. The objectives of this study were to determine if sex-specific blastocyst miRNA secretion occurs and to further investigate the role these miRNAs may have in the interaction between a blastocyst and the maternal environment. In vitro embryo culture was performed and media from male and female blastocysts was collected into sex-specific pools. Profiling of 68 miRNAs revealed a total of eight miRNAs that were differentially expressed between female and male-conditioned media. Validation by qPCR confirmed higher expression of miR-22 (P < 0.05), miR-122 (P < 0.05), and miR-320a (P < 0.05) in female media for three additional biological replicates. To examine the potential roles of secreted miRNAs to the media in communication with the maternal environment, miR-22, miR-122, and miR-320a were each supplemented to four replicates of primary bovine endometrial epithelial cell culture. Uptake of miR-122 (P < 0.05) and miR-320a (P < 0.05) was detected, and a trend of uptake was detected for miR-22 (P > 0.05). Further, expression of the progesterone receptor transcript, a predicted target of all three miRNAs, was found to be upregulated in the cells following supplementation of miR-122 (P < 0.05) and miR-320a (P < 0.05), and a trend upregulation of the transcript was observed following miR-22 (P > 0.05) supplementation. This work demonstrates that male and female conceptuses are able to differentially secrete miRNAs at the blastocyst stage and that these miRNAs have the ability to induce a transcriptomic response when applied to maternal cells. This knowledge builds on the known dimorphic differences in conceptuses at the blastocyst stage and demonstrates a role for blastocyst-secreted miRNAs in cell-cell communication.
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Affiliation(s)
- Nicole Gross
- Department of Animal Sciences, University of Wisconsin, MadisonWI, USA
| | - Jenna Kropp
- Department of Animal Sciences, University of Wisconsin, MadisonWI, USA
| | - Hasan Khatib
- Department of Animal Sciences, University of Wisconsin, MadisonWI, USA
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123
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Palmini G, Marini F, Brandi ML. What Is New in the miRNA World Regarding Osteosarcoma and Chondrosarcoma? Molecules 2017; 22:E417. [PMID: 28272374 PMCID: PMC6155266 DOI: 10.3390/molecules22030417] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/03/2017] [Indexed: 02/06/2023] Open
Abstract
Despite the availability of multimodal and aggressive therapies, currently patients with skeletal sarcomas, including osteosarcoma and chondrosarcoma, often have a poor prognosis. In recent decades, advances in sequencing technology have revealed the presence of RNAs without coding potential known as non-coding RNAs (ncRNAs), which provides evidence that protein-coding genes account for only a small percentage of the entire genome. This has suggested the influence of ncRNAs during development, apoptosis and cell proliferation. The discovery of microRNAs (miRNAs) in 1993 underscored the importance of these molecules in pathological diseases such as cancer. Increasing interest in this field has allowed researchers to study the role of miRNAs in cancer progression. Regarding skeletal sarcomas, the research surrounding which miRNAs are involved in the tumourigenesis of osteosarcoma and chondrosarcoma has rapidly gained traction, including the identification of which miRNAs act as tumour suppressors and which act as oncogenes. In this review, we will summarize what is new regarding the roles of miRNAs in chondrosarcoma as well as the latest discoveries of identified miRNAs in osteosarcoma.
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Affiliation(s)
- Gaia Palmini
- Department of Surgery and Translational Medicine, University of Florence, Florence 50134, Italy.
| | - Francesca Marini
- Department of Surgery and Translational Medicine, University of Florence, Florence 50134, Italy.
| | - Maria Luisa Brandi
- Department of Surgery and Translational Medicine, University of Florence, Florence 50134, Italy.
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124
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Dhar S, Kumar A, Gomez CR, Akhtar I, Hancock JC, Lage JM, Pound CR, Levenson AS. MTA1-activated Epi-microRNA-22 regulates E-cadherin and prostate cancer invasiveness. FEBS Lett 2017; 591:924-933. [PMID: 28231399 DOI: 10.1002/1873-3468.12603] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 02/16/2017] [Accepted: 02/17/2017] [Indexed: 12/14/2022]
Abstract
We have previously shown that metastasis-associated protein 1 (MTA1), a chromatin remodeler, plays an important role in prostate cancer invasiveness, likely through regulation of epithelial-to-mesenchymal transition. Here, we identified miR-22 as an epigenetic-microRNA (Epi-miR) directly induced by MTA1 and predicted to target E-cadherin. Loss-of-function and overexpression studies of MTA1 reinforced its regulatory role in miR-22 expression. MiR-22 directly targets the 3'-untranslated region of E-cadherin, and ectopic overexpression of miR-22 diminishes E-cadherin expression. Overexpression of miR-22 in prostate cancer cells promotes cell invasiveness and migration. Meta-analysis of patient tumor samples indicates a positive correlation between MTA1 and miR-22, supporting their inhibitory effect on E-cadherin expression. Our findings implicate the MTA1/Epi-miR-22/E-cadherin axis as a new epigenetic signaling pathway that promotes tumor invasion in prostate cancer.
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Affiliation(s)
- Swati Dhar
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
- School of Medicine-Department of Radiation/Oncology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Avinash Kumar
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
| | - Christian R Gomez
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
- School of Medicine-Department of Radiation/Oncology, University of Mississippi Medical Center, Jackson, MS, USA
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Israh Akhtar
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA
| | - John C Hancock
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Janice M Lage
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Charles R Pound
- Division of Urology, Department of Surgery, University of Mississippi Medical Center, Jackson, MS, USA
| | - Anait S Levenson
- Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA
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125
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Gai P, Sun H, Wang G, Xu Q, Qi X, Zhang Z, Jiang L. miR-22 promotes apoptosis of osteosarcoma cells via inducing cell cycle arrest. Oncol Lett 2017; 13:2354-2358. [PMID: 28454403 PMCID: PMC5403490 DOI: 10.3892/ol.2017.5674] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 01/19/2017] [Indexed: 12/17/2022] Open
Abstract
To study the effects of miR-22 on the proliferation and the apoptosis of osteosarcoma MG-63 cell line and to explore the potential molecular mechanism that miR-22 regulates this biological process. Quantitive real-time polymerase chain reaction (RT-qPCR) was performed to explore the miRNA level of miR-22. The MG-63 cell line was infected with miR-22 mimics for establishment of miR-22 overexpression. Non-infected cells were in blank group and cells infected with empty vector were served as negative control (NC group). MTT assay was conducted to measure cell viability. The cell cycle and apoptosis were explored using flow cytometry and the apoptosis-related markers were detected by western blotting. RT-qPCR results revealed that the miR-22 miRNA level in the MG-63 cells was significantly lower than that in osteoblasts (P<0.05). MTT assay showed that the MG-63 cells infected with miR-22 mimics exhibited markedly decreased proliferation ability compared with blank and empty vector (NC) groups. Next, we found that overexpression of miR-22 remarkably increased the apoptosis of the MG-63 cells, evidenced from the flow cytometry results and elevated Bax and reduced Bcl-2. Furthermore, results revealed that percentage of the cells at G0/G1 phase in miR-22 mimic group (66.75±3.67%) was significantly higher than blank (52.9±2.58%) and NC (50.5±2.45%) groups. miR-22 attenuated the proliferation and induced the apoptosis of the MG-63 cells via promoting G0/G1 cell cycle arrest. Thus, miR-22 may have the potential to be a novel therapeutic in treatment of osteosarcoma.
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Affiliation(s)
- Pengzhou Gai
- Department of Orthopedics, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Hongliang Sun
- Department of Orthopedics, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Guangda Wang
- Department of Orthopedics, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Qiang Xu
- Department of Orthopedics, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Xiaojun Qi
- Department of Orthopedics, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Zuofu Zhang
- Department of Orthopedics, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Lei Jiang
- Department of Pathology, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
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126
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Response of MiRNA-22-3p and MiRNA-149-5p to Folate Deficiency and the Differential Regulation of MTHFR Expression in Normal and Cancerous Human Hepatocytes. PLoS One 2017; 12:e0168049. [PMID: 28045918 PMCID: PMC5207697 DOI: 10.1371/journal.pone.0168049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/25/2016] [Indexed: 12/19/2022] Open
Abstract
Background/Aims Folic acid (FA) is a core micronutrient involved in DNA synthesis/methylation, and the metabolism of FA is responsible for genomic stability. MicroRNAs may affect gene expression during folate metabolism when cellular homeostasis is changed. This study aimed to reveal the relationship between FA deficiency and the expression of miR-22-p/miR-149-5p and the targeted regulation of miR-22-3p/miR-149-5p on the key folate metabolic gene Methylenetetrahydrofolate reductase (MTHFR). Methods Normal (HL-7702 cells) and cancerous (QGY-7703 cells) human hepatocytes were intervened in modified RPMI 1640 with FA deficiency for 21 days. The interaction between MTHFR and the tested miRNAs was verified by Dual-Luciferase Reporter Assays. The changes in the expression of miR-22-3p/miR-149-5p in response to FA deficiency were detected by Poly (A) Tailing RT-qPCR, and the expression of MTHFR at both the transcriptional and translational levels was determined by RT-qPCR and Western blotting, respectively. Result MiR-22-3p/miR-149-5p directly targeted the 3’UTR sequence of the MTHFR gene. FA deficiency led to an upregulation of miR-22-3p/miR-149-5p expression in QGY-7703/HL-7702 cells, while the transcription of MTHFR was decreased in QGY-7703 cells but elevated in HL-7702 cells. Western blotting showed that FA deficiency resulted in a decline of the MTHFR protein in QGY-7703 cells, whereas in HL-7702 cells, the MTHFR protein level remained constant. Conclusion The results suggested that miR-22-3p/miR-149-5p exert different post-transcriptional effects on MTHFR under conditions of FA deficiency in normal and cancerous human hepatocytes. The results also implied that miR-22-3p/miR-149-5p might exert anticancer effects in cases of long-term FA deficiency.
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Wang J, Li Y, Ding M, Zhang H, Xu X, Tang J. Molecular mechanisms and clinical applications of miR-22 in regulating malignant progression in human cancer (Review). Int J Oncol 2016; 50:345-355. [PMID: 28000852 PMCID: PMC5238783 DOI: 10.3892/ijo.2016.3811] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 12/07/2016] [Indexed: 12/31/2022] Open
Abstract
miRNAs (microRNAs) have been validated to play fateful roles in the occurrence and development of cancers by post-transcriptionally targeting 3′-untranslated regions of the downstream gene mRNAs to repress mRNA expression. Mounting investigations forcefully document that not only does miR-22 biologically impinge on the processes of senescence, energy supply, angiogenesis, EMT (epithelial-mesenchymal transition), proliferation, migration, invasion, metastasis and apoptosis, but also it genetically or epigenetically exerts dual (inhibitory/promoting cancer) effects in various cancers via CNAs (copy number alterations), SNPs (single nucleotide polymorphisms), methylation, acetylation and even more momentously hydroxymethylation. Additionally, miR-22 expression may fluctuate with cancer progression in the body fluids of cancer patients and miR-22 could amplify its inhibitory or promoting effects through partaking in positive or negative feedback loops and interplaying with many other related miRNAs in the cascade of events, making it possible for miR-22 to be a promising and complementary or even independent cancer biomarker in some cancers and engendering profound influences on the early diagnosis, therapeutics, supervising curative effects and prognosis.
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Affiliation(s)
- Jingyu Wang
- Department of Pathology, The First Hospital of Jiaxing, Zhejiang, P.R. China
| | - Yuan Li
- Department of Pediatrics, The Affiliated Children's Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China
| | - Meiman Ding
- The Criminal Investigation Detachment of Jiaxing Public Security Bureau, Hangzhou, Zhejiang, P.R. China
| | - Honghe Zhang
- Department of Pathology, Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang, P.R. China
| | - Xiaoming Xu
- Department of Pathology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, P.R. China
| | - Jinlong Tang
- Department of Pathology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, P.R. China
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Establishment and Characterization of a Human Small Cell Osteosarcoma Cancer Stem Cell Line: A New Possible In Vitro Model for Discovering Small Cell Osteosarcoma Biology. Stem Cells Int 2016; 2016:3042198. [PMID: 27651797 PMCID: PMC5019944 DOI: 10.1155/2016/3042198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 06/20/2016] [Accepted: 07/20/2016] [Indexed: 12/26/2022] Open
Abstract
Osteosarcoma (OSA) is the most common primary malignant bone tumor, usually arising in the long bones of children and young adults. There are different subtypes of OSA, among which we find the conventional OS (also called medullary or central osteosarcoma) which has a high grade of malignancy and an incidence of 80%. There are different subtypes of high grade OS like chondroblastic, fibroblastic, osteoblastic, telangiectatic, and the small cell osteosarcoma (SCO). In this study, for the first time, we have isolated, established, and characterized a cell line of cancer stem cells (CSCs) from a human SCO. First of all, we have established a primary finite cell line of SCO, from which we have isolated the CSCs by the sphere formation assay. We have proved their in vitro mesenchymal and embryonic stem phenotype. Additionally, we have showed their neoplastic phenotype, since the original tumor bulk is a high grade osteosarcoma. This research demonstrates the existence of CSCs also in human primary SCO and highlights the establishment of this particular stabilized cancer stem cell line. This will represent a first step into the study of the biology of these cells to discover new molecular targets molecules for new incisive therapeutic strategies against this highly aggressive OSA.
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