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Zhou Y, Qiu J, Liu S, Wang P, Ma D, Zhang G, Cao Y, Hu L, Wang Z, Wu J, Jiang C. CFDP1 promotes hepatocellular carcinoma progression through activating NEDD4/PTEN/PI3K/AKT signaling pathway. Cancer Med 2022; 12:425-444. [PMID: 35861040 PMCID: PMC9844661 DOI: 10.1002/cam4.4919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/06/2022] [Accepted: 05/24/2022] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND AND AIMS It is being increasingly reported that the Cranio Facial Development Protein 1 (CFDP1) plays a significant role in the onset and progression of tumors. Nonetheless, the underlying mechanisms associated with CFDP1 that contribute to hepatocellular carcinoma (HCC) and the specific biological role of CFDP1 remain vague. METHODS The Gene Expression Omnibus (GEO) database was analyzed to obtain the gene expression profiles as well as the matching clinical data of HCC patients. The gene co-expression network was developed by means of weighted gene co-expression network analysis (WGCNA) to screen for possible biomarkers that could be used for the purpose of predicting prognosis. The Cancer Genome Atlas (TCGA) and Gene Expression Profile Interaction Analysis (GEPIA) databases were used to assess the relationship between survival and expression. In addition, we identified the underlying mechanism associated with CFDP1 by analyzing the KEGG pathway database, applying the GSEA and GeneCards analysis method. We performed a sequence of experiments (in vivo and in vitro) for the purpose of investigating the specific function of CFDP1 in liver cancer. RESULTS The obtained results revealed high expression of CFDP1 in HCC tissues and cell lines. A positive correlation between the overexpression of CFDP1 and the adverse clinicopathological features was observed. Moreover, we observed that the low recurrence-free survival and overall survival were associated with CFDP1 overexpression. In addition, GeneCards and GSEA analysis showed that CFDP1 may interact with NEDD4 and participate in PTEN regulation. Meanwhile, CFDP1 can promote the malignant development of liver cancer in vivo and in vitro. The western blotting technique was also employed so as to examine the samples, and the findings demonstrated that CFDP1 enhanced the malignancy of HCC via the NEDD4-mediated PTEN/PI3K/AKT pathway. CONCLUSION We highlighted that CFDP1 played an oncogenic role in HCC and was identified as a possible clinical prognostic factor and a potential novel therapeutic target for HCC.
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Affiliation(s)
- Yan Zhou
- Department of Hepatobiliary SurgeryDrum Tower Clinical College of Nanjing Medical UniversityNanjingChina
| | - Jiannan Qiu
- Department of Hepatobiliary SurgeryThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingChina
- Jiangsu Key Laboratory of Molecular MedicineNational Institute of Healthcare Data Science at Nanjing University, Medical School of Nanjing UniversityNanjingChina
| | - Siyuan Liu
- Department of Hepatobiliary SurgeryDrum Tower Clinical College of Nanjing Medical UniversityNanjingChina
| | - Peng Wang
- Department of Hepatobiliary SurgeryThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingChina
- Jiangsu Key Laboratory of Molecular MedicineNational Institute of Healthcare Data Science at Nanjing University, Medical School of Nanjing UniversityNanjingChina
| | - Ding Ma
- Department of Hepatobiliary SurgeryThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingChina
- Jiangsu Key Laboratory of Molecular MedicineNational Institute of Healthcare Data Science at Nanjing University, Medical School of Nanjing UniversityNanjingChina
| | - Guang Zhang
- Department of Hepatobiliary SurgeryDrum Tower Clinical College of Nanjing Medical UniversityNanjingChina
- Department of Hepatobiliary SurgeryThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingChina
- Jiangsu Key Laboratory of Molecular MedicineNational Institute of Healthcare Data Science at Nanjing University, Medical School of Nanjing UniversityNanjingChina
- Jinan Microecological Biomedicine Shandong LaboratoryShounuo City Light West BlockJinan CityChina
| | - Yin Cao
- Department of Hepatobiliary SurgeryDrum Tower Clinical College of Nanjing Medical UniversityNanjingChina
- Department of Hepatobiliary SurgeryThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingChina
- Jiangsu Key Laboratory of Molecular MedicineNational Institute of Healthcare Data Science at Nanjing University, Medical School of Nanjing UniversityNanjingChina
- Jinan Microecological Biomedicine Shandong LaboratoryShounuo City Light West BlockJinan CityChina
| | - Lili Hu
- Department of Hepatobiliary SurgeryDrum Tower Clinical College of Nanjing Medical UniversityNanjingChina
| | - Zhongxia Wang
- Department of Hepatobiliary SurgeryDrum Tower Clinical College of Nanjing Medical UniversityNanjingChina
- Department of Hepatobiliary SurgeryThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingChina
- Jiangsu Key Laboratory of Molecular MedicineNational Institute of Healthcare Data Science at Nanjing University, Medical School of Nanjing UniversityNanjingChina
- Jinan Microecological Biomedicine Shandong LaboratoryShounuo City Light West BlockJinan CityChina
| | - Junhua Wu
- Jiangsu Key Laboratory of Molecular MedicineNational Institute of Healthcare Data Science at Nanjing University, Medical School of Nanjing UniversityNanjingChina
- Jinan Microecological Biomedicine Shandong LaboratoryShounuo City Light West BlockJinan CityChina
| | - Chunping Jiang
- Department of Hepatobiliary SurgeryDrum Tower Clinical College of Nanjing Medical UniversityNanjingChina
- Department of Hepatobiliary SurgeryThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingChina
- Jiangsu Key Laboratory of Molecular MedicineNational Institute of Healthcare Data Science at Nanjing University, Medical School of Nanjing UniversityNanjingChina
- Jinan Microecological Biomedicine Shandong LaboratoryShounuo City Light West BlockJinan CityChina
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Dong Z, Wang H, Chen H, Jiang H, Yuan J, Yang Z, Wang WJ, Xu F, Guo X, Cao Y, Zhu Z, Geng C, Cheung WC, Kwok YK, Yang H, Leung TY, Morton CC, Cheung SW, Choy KW. Identification of balanced chromosomal rearrangements previously unknown among participants in the 1000 Genomes Project: implications for interpretation of structural variation in genomes and the future of clinical cytogenetics. Genet Med 2017; 20:697-707. [PMID: 29095815 PMCID: PMC5932280 DOI: 10.1038/gim.2017.170] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/14/2017] [Indexed: 02/04/2023] Open
Abstract
Purpose Recent studies demonstrate that whole-genome sequencing (WGS) enables detection of cryptic rearrangements in apparently balanced chromosomal rearrangements (also known as balanced chromosomal abnormalities, BCAs) previously identified by conventional cytogenetic methods. We aimed to assess our analytical tool for detecting BCAs in The 1000 Genomes Project without knowing affected bands. Methods The 1000 Genomes Project provides an unprecedented integrated map of structural variants in phenotypically normal subjects, but there is no information on potential inclusion of subjects with apparently BCAs akin to those traditionally detected in diagnostic cytogenetics laboratories. We applied our analytical tool to 1,166 genomes from the 1000 Genomes Project with sufficient physical coverage (8.25-fold). Results Our approach detected four reciprocal balanced translocations and four inversions ranging in size from 57.9 kb to 13.3 Mb, all of which were confirmed by cytogenetic methods and PCR studies. One of DNAs has a subtle translocation that is not readily identified by chromosome analysis due to similar banding patterns and size of exchanged segments, and another results in disruption of all transcripts of an OMIM gene. Conclusions Our study demonstrates the extension of utilizing low-coverage WGS for unbiased detection of BCAs including translocations and inversions previously unknown in the 1000 Genomes Project.
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Affiliation(s)
- Zirui Dong
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.,BGI-Shenzhen, Shenzhen, China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Huilin Wang
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.,Department of Central Laboratory, Bao'an Maternity and Child Healthcare Hospital, Jinan University School of Medicine, Key Laboratory of Birth Defects Research, Birth Defects Prevention Research and Transformation Team, Shenzhen, China
| | - Haixiao Chen
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Hui Jiang
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Jianying Yuan
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Zhenjun Yang
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Wen-Jing Wang
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Fengping Xu
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China.,Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Xiaosen Guo
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Ye Cao
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Zhenzhen Zhu
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Chunyu Geng
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Wan Chee Cheung
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong, China
| | - Yvonne K Kwok
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Huanming Yang
- BGI-Shenzhen, Shenzhen, China.,China National Genebank-Shenzhen, BGI-Shenzhen, Shenzhen, China
| | - Tak Yeung Leung
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong, China.,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.,The Chinese University of Hong Kong-Baylor College of Medicine Joint Center For Medical Genetics, Hong Kong, China
| | - Cynthia C Morton
- Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, Massachusetts, USA. .,Harvard Medical School, Boston, Massachusetts, USA. .,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA. .,Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts, USA. .,Division of Evolution and Genomic Sciences, School of Biological Sciences, University of Manchester, Manchester Academic Health Science Center, Manchester, UK.
| | - Sau Wai Cheung
- The Chinese University of Hong Kong-Baylor College of Medicine Joint Center For Medical Genetics, Hong Kong, China. .,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA.
| | - Kwong Wai Choy
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong, Hong Kong, China. .,Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China. .,The Chinese University of Hong Kong-Baylor College of Medicine Joint Center For Medical Genetics, Hong Kong, China.
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Jin S, Choi H, Kwon JT, Kim J, Jeong J, Kim J, Ham S, Cho BN, Yoo YJ, Cho C. Identification and characterization of reproductive KRAB-ZF genes in mice. Gene 2015; 565:45-55. [DOI: 10.1016/j.gene.2015.03.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/03/2015] [Accepted: 03/27/2015] [Indexed: 11/30/2022]
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4
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Messina G, Celauro E, Atterrato MT, Giordano E, Iwashita S, Dimitri P. The Bucentaur (BCNT) protein family: a long-neglected class of essential proteins required for chromatin/chromosome organization and function. Chromosoma 2014; 124:153-62. [DOI: 10.1007/s00412-014-0503-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 12/05/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
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Makeyev AV, Bayarsaihan D. ChIP-Chip Identifies SEC23A, CFDP1, and NSD1 as TFII-I Target Genes in Human Neural Crest Progenitor Cells. Cleft Palate Craniofac J 2012; 50:347-50. [PMID: 23145914 DOI: 10.1597/12-069] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Objectives : GTF2I and GTF2IRD1 genes located in Williams-Beuren syndrome (WBS) critical region encode TFII-I family transcription factors. The aim of this study was to map genomic sites bound by these proteins across promoter regions of developmental regulators associated with craniofacial development. Design : Chromatin was isolated from human neural crest progenitor cells and the DNA-binding profile was generated using the human RefSeq tiling promoter ChIP-chip arrays. Results : TFII-I transcription factors are recruited to the promoters of SEC23A, CFDP1, and NSD1 previously defined as TFII-I target genes. Moreover, our analysis revealed additional binding elements that contain E-boxes and initiator-like motifs. Conclusions : Genome-wide promoter binding studies revealed SEC23A, CFDP1, and NSD1 linked to craniofacial or dental development as direct TFII-I targets. Developmental regulation of these genes by TFII-I factors could contribute to the WBS-specific facial dysmorphism.
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Makeyev AV, Bayarsaihan D. Molecular Basis of Williams-Beuren Syndrome: TFII-I Regulated Targets Involved in Craniofacial Development. Cleft Palate Craniofac J 2011; 48:109-16. [DOI: 10.1597/09-093] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Objective The aim of this study is to identify gene targets of TFII-I transcription factors involved in craniofacial development. Design Recent findings in individuals with Williams-Beuren syndrome who show facial dysmorphism and cognitive defects have pointed to TFII-I genes ( GTF2I and GTF2IRD1) as the prime candidates responsible for these clinical features. However, TFII-I proteins are multifunctional transcriptional factors regulating a number of genes during development, and how their haploinsufficiency leads to the Williams-Beuren syndrome phenotype is currently unknown. Results Here we report the identification of three genes with a well-established relevance to craniofacial development as direct TFII-I targets. These genes, craniofacial development protein 1 ( Cfdp1), Sec23 homolog A ( Sec23a), and nuclear receptor binding SET domain protein 1 ( Nsd1), contain consensus TFII-I binding sites in their proximal promoters; the chromatin immunoprecipitation analysis showed that TFII-I transcription factors are recruited to these sites in vivo. Conclusions The results suggest that transcriptional regulation of these genes by TFII-I proteins could provide a possible genotype-phenotype link in Williams-Beuren syndrome.
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Affiliation(s)
- Aleksandr V. Makeyev
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
| | - Dashzeveg Bayarsaihan
- Center for Regenerative Medicine and Skeletal Development, Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
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7
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Huang JX, Wang L, Jiang MH. TNFRSF11B computational development network construction and analysis between frontal cortex of HIV encephalitis (HIVE) and HIVE-control patients. JOURNAL OF INFLAMMATION-LONDON 2010; 7:50. [PMID: 20920282 PMCID: PMC2959006 DOI: 10.1186/1476-9255-7-50] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 09/30/2010] [Indexed: 12/19/2022]
Abstract
BACKGROUND TNFRSF11B computational development network construction and analysis of frontal cortex of HIV encephalitis (HIVE) is very useful to identify novel markers and potential targets for prognosis and therapy. METHODS By integration of gene regulatory network infer (GRNInfer) and the database for annotation, visualization and integrated discovery (DAVID) we identified and constructed significant molecule TNFRSF11B development network from 12 frontal cortex of HIVE-control patients and 16 HIVE in the same GEO Dataset GDS1726. RESULTS Our result verified TNFRSF11B developmental process only in the downstream of frontal cortex of HIVE-control patients (BST2, DGKG, GAS1, PDCD4, TGFBR3, VEZF1 inhibition), whereas in the upstream of frontal cortex of HIVE (DGKG, PDCD4 activation) and downstream (CFDP1, DGKG, GAS1, PAX6 activation; BST2, PDCD4, TGFBR3, VEZF1 inhibition). Importantly, we datamined that TNFRSF11B development cluster of HIVE is involved in T-cell mediated immunity, cell projection organization and cell motion (only in HIVE terms) without apoptosis, plasma membrane and kinase activity (only in HIVE-control patients terms), the condition is vital to inflammation, brain morphology and cognition impairment of HIVE. Our result demonstrated that common terms in both HIVE-control patients and HIVE include developmental process, signal transduction, negative regulation of cell proliferation, RNA-binding, zinc-finger, cell development, positive regulation of biological process and cell differentiation. CONCLUSIONS We deduced the stronger TNFRSF11B development network in HIVE consistent with our number computation. It would be necessary of the stronger TNFRSF11B development function to inflammation, brain morphology and cognition of HIVE.
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Affiliation(s)
- Ju X Huang
- Biomedical Center, School of Electronics Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
| | - L Wang
- Biomedical Center, School of Electronics Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
| | - Ming H Jiang
- Lab of Computational Linguistics, School of Humanities and Social Sciences, Tsinghua Univ., Beijing, 100084, China
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Luan X, Ito Y, Zhang Y, Diekwisch TGH. Characterization of the mouse CP27 promoter and NF-Y mediated gene regulation. Gene 2010; 460:8-19. [PMID: 20388536 DOI: 10.1016/j.gene.2010.03.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2008] [Revised: 03/26/2010] [Accepted: 03/27/2010] [Indexed: 01/02/2023]
Abstract
The cp27 gene is a highly conserved and unique gene with important roles related to craniofacial organogenesis. The present study is a first analysis of the CP27 promoter and its regulation. Here, we have cloned the promoter of the mouse cp27 gene, examined its transcriptional activity, and identified transcription factor binding sites in the proximal promoter region. Two major transcription start sites were mapped adjacent to exon 1. Promoter function analysis of the 5' flanking region by progressive 5' deletion mutations localized transcription repression elements between -1993bp and -969bp and several positive elements between -968bp and the preferred transcription start site. EMSA and functional studies indicated two function-cooperative CCAAT boxes and identified the NF-Y transcription factor as the CCAAT activator controlling transactivation of the CP27 promoter. In addition, this study demonstrated that for its effective binding and function, NF-Y required not only the minimal DNA segment length identified by deletion studies, but also a defined nucleotide sequence in the distal 3' flanking region of the CP27 proximal promoter CCAAT box. These results provide a basis for our understanding of the specific regulation of the cp27 gene in the NF-Y-mediated gene transcription network.
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Affiliation(s)
- Xianghong Luan
- Brodie Laboratory for Craniofacial Genetics, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL 60612, USA
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Luo F, Hamoudi R, Brooks DG, Patek CE, Arends MJ. Stem cell gene expression changes induced specifically by mutated K-ras. Gene Expr 2007; 14:101-15. [PMID: 18257393 PMCID: PMC6042043 DOI: 10.3727/105221607783417583] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
K-Ras proteins transduce signals from membrane-bound receptors via multiple downstream effector pathways and thereby regulate fundamental stem cell processes that affect neoplasia, including proliferation, apoptosis, and differentiation, but their contribution to tumourigenesis is unclear. Because cancers develop from stem cells, we set out to determine the characteristic changes in gene expression brought about by mutated K-ras (without interference from normal K-ras) in otherwise normal stem cells. cDNA microarrays were used to analyze gene expression profiles comparing wild-type murine embryonic stem (ES) cells with K-ras(Val12) expressing ES cells (previously made null for both endogenous K-ras alleles and transfected with K-ras(Val12), with valine for glycine at codon 12). K-ras(Val12) was expressed at 1.2-fold normal K-ras levels and produced transcripts for both activated K-Ras4A and 4B isoforms. The array expression data were confirmed by real-time quantitative PCR analysis of selected genes expressed both in the K-ras(Val12) expressing ES cells (R = 0.91 with array data) and in the normal intestinal tissues of K-ras(Val12) transgenic mice (R = 0.91 with array data). Changes in gene expression were correlated with the effects of K-ras(Val12) expression on ES cells of enhancing self-renewal in an undifferentiated state, increasing susceptibility to DNA damage-induced apoptosis, and increased proliferation. These expression data may explain, at least in part, some neoplasia-related aspects of the phenotypic changes brought about in this ES cell line by mutated K-ras, in that upregulation of cell growth-related proteins and DNA-associated proteins is consistent with increased proliferation; upregulation of certain apoptosis-related proteins is consistent with a greater susceptibility to DNA damage-induced apoptosis; and downregulation of structural proteins, extracellular matrix components, secretory proteins and receptors is consistent with a less differentiated phenotype.
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Affiliation(s)
- Feijun Luo
- *Department of Pathology, Addenbrooke’s Hospital, Hills Road, University of Cambridge, Cambridge, CB2 2QQ, UK
| | - Rifat Hamoudi
- *Department of Pathology, Addenbrooke’s Hospital, Hills Road, University of Cambridge, Cambridge, CB2 2QQ, UK
| | - David G. Brooks
- *Department of Pathology, Addenbrooke’s Hospital, Hills Road, University of Cambridge, Cambridge, CB2 2QQ, UK
| | - Charles E. Patek
- †Sir Alastair Currie Cancer Research UK Laboratories, Molecular Medicine Centre, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, UK
| | - Mark J. Arends
- *Department of Pathology, Addenbrooke’s Hospital, Hills Road, University of Cambridge, Cambridge, CB2 2QQ, UK
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Iwashita S, Ueno S, Nakashima K, Song SY, Ohshima K, Tanaka K, Endo H, Kimura J, Kurohmaru M, Fukuta K, David L, Osada N. A tandem gene duplication followed by recruitment of a retrotransposon created the paralogous bucentaur gene (bcntp97) in the ancestral ruminant. Mol Biol Evol 2005; 23:798-806. [PMID: 16384818 DOI: 10.1093/molbev/msj088] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Retrotransposable element-1 (RTE-1) is a class of long interspersed nucleotide elements that contain in its open reading frame an apurinic/apyrimidinic endonuclease domain (AP-END) and a reverse transcriptase domain. Ruminants have a clade-specific RTE-1 (BovB/RTE). The bovine bcnt gene (bucentaur or craniofacial developmental protein 1) has a duplicated paralog (bcntp97) in tandem that recruited an AP-END of BovB/RTE as a coding exon (RTE exon). We obtained sequence of the bcnt region from several animals and showed that other ruminants also have the bcntp97 with a conserved RTE exon while camels and pigs do not. Genomic Southern analysis showed that camels and pigs have multiple bcnt-related sequences but not BovB/RTE which bovines and lesser mouse deer have abundantly. These results indicate that the bcnt gene duplication followed by the creation of bcntp97 including recruitment of the RTE exon occurred in the ancestral ruminant about 55 MYA. The indication of time frame is supported by a phylogenetic analysis. Taken together with a result of differential tissue expression of the two bcnt paralogs, we conclude that bcntp97 was created concurrently with the early radiation of BovB/RTE in an ancestral ruminant and then acquired a novel function.
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Affiliation(s)
- Shintaro Iwashita
- Mitsubishi Kagaku Institute of Life Sciences (MITILS), Tokyo, Japan.
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Witzmann FA, Monteiro-Riviere NA, Inman AO, Kimpel MA, Pedrick NM, Ringham HN, Riviere JE. Effect of JP-8 jet fuel exposure on protein expression in human keratinocyte cells in culture. Toxicol Lett 2005; 160:8-21. [PMID: 16019166 DOI: 10.1016/j.toxlet.2005.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2005] [Revised: 05/31/2005] [Accepted: 06/01/2005] [Indexed: 10/25/2022]
Abstract
Dermal exposure to jet fuel is a significant occupational hazard. Previous studies have investigated its absorption and disposition in skin, and the systemic biochemical and immunotoxicological sequelae to exposure. Despite studies of JP-8 jet fuel components in murine, porcine or human keratinocyte cell cultures, proteomic analysis of JP-8 exposure has not been investigated. This study was conducted to examine the effect of JP-8 administration on the human epidermal keratinocyte (HEK) proteome. Using a two-dimensional electrophoretic approach combined with mass spectrometric-based protein identification, we analyzed protein expression in HEK exposed to 0.1% JP-8 in culture medium for 24 h. JP-8 exposure resulted in significant expression differences (p<0.02) in 35 of the 929 proteins matched and analyzed. Approximately, a third of these alterations were increased in protein expression, two-thirds declined with JP-8 exposure. Peptide mass fingerprint identification of effected proteins revealed a variety of functional implications. In general, altered proteins involved endocytotic/exocytotic mechanisms and their cytoskeletal components, cell stress, and those involved in vesicular function.
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Affiliation(s)
- F A Witzmann
- Department of Cellular and Integrative Physiology, Biotechnology Research and Training Center, Indiana University School of Medicine, 1345 W 16th Street, Rm 308, Indianapolis, IN 46202-2111, USA.
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12
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Luan X, Diekwisch TGH. CP27 affects viability, proliferation, attachment and gene expression in embryonic fibroblasts. Cell Prolif 2002; 35:207-19. [PMID: 12153613 PMCID: PMC6496629 DOI: 10.1046/j.1365-2184.2002.00238.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2001] [Accepted: 11/27/2001] [Indexed: 11/20/2022] Open
Abstract
CP27 is a gene that has been cloned from an E11 early embryonic library and has been suggested to mediate early organogenesis (Diekwisch et al., 1999, Gene 235, 19). We have hypothesized that CP27 exhibits its effects on organogenesis by affecting individual cell function. Based on the CP27 expression pattern we have selected the CP27 expressing embryonic fibroblast cell line BALB/c 3T3 to determine the effects of CP27 on cell function. CP27 loss of function strategies were performed by adding 5, 12.5 or 25 micro g/ml anti-CP27 antibody to cultured BALB/c 3T3 cells and comparing the results to controls in which identical concentrations of rabbit serum were added to the culture medium. Other controls included an antibody against another extracellular matrix protein amelogenin (negative control) and anti-CP27 antibodies directed against other areas of the CP27 molecule (positive control). Following cell culture, cell viability, apoptosis, cell proliferation, cell shape, cellular attachment and fibronectin matrix production were assayed using MTT colourimetric assay, BrdU staining, morphometry, immunostaining and western blot analysis. Block of CP27 function using an antibody strategy resulted in the following significant changes: (i) reduced viability, (ii) increased number of apoptotic cells, (iii) reduced proliferation, (iv) alterations in cell shape, (v) loss of attachment, and (vi) reduction in fibronectin matrix production. There was also a redistribution in fibronectin matrix organization demonstrated by immunohistochemistry. We conclude that CP27 plays an important role in the maintance of normal cell function and that CP27 block leads to significant changes in cellular behaviour.
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Affiliation(s)
- X Luan
- Brodie Laboratory for Craniofacil Genetics, University of Illinois at Chicago, IL, 60612, USA
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