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8p deletions in renal cell carcinoma are associated with unfavorable tumor features and poor overall survival. Urol Oncol 2019; 38:43.e13-43.e20. [PMID: 31757738 DOI: 10.1016/j.urolonc.2019.09.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/02/2019] [Accepted: 09/25/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND METHODS 8p deletions are common in renal cell carcinoma. To study their prognostic impact and association with kidney cancer phenotype, a tissue microarray with 1,809 cancers was analyzed by fluorescence in situ hybridization for 8p21 copy numbers. RESULTS One thousand four hundred and seventy four interpretable tumors showed substantial differences between renal cancer subtypes. That 8p deletion was only seen in 1 (0.5%) of 216 papillary carcinomas underscores the biologic uniqueness of papillary kidney cancer, which is also defined by a highly distinct morphology. 8p deletions were found in 13.2% of 976 clear cell carcinomas, 7.8% of 77 chromophobe carcinomas, 0.8% of 119 oncocytomas, but also in several rare tumor entities including 1 of 4 collecting duct cancers, 1 of 3 multilocular cystic clear cell renal cell neoplasm of low malignancy, 2 of 10 Xp11.2 translocation cancers, 3 of 18 not otherwise specified carcinomas, and 1 analyzed medullary carcinoma. In clear cell carcinomas, 8p deletions were significantly associated with higher International Society of Urologic Pathologists (ISUP) grading (P = 0.0014), Fuhrman (P = 0.0003) and Thoenes grade (P = 0.0033), advanced tumor stage (P = 0.0002), large tumor diameter (P = 0.0019), distant metastases (P = 0.0183), overall survival (P = 0.0394), and recurrence free survival (P < 0.0001). In multivariate analysis, the prognostic role of 8p deletions was not independent of established clinic-pathological parameters. In conclusion, 8p deletions are strongly linked to tumor aggressiveness in clear cell kidney cancer. CONCLUSIONS Because 8p deletions are easy to measure by fluorescence in situ hybridization, 8p deletion assessment, most likely in combination with other parameters, may have a role in future prognosis assessment in clear cell kidney cancer.
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Drug resistance in papillary RCC: from putative mechanisms to clinical practicalities. Nat Rev Urol 2019; 16:655-673. [PMID: 31602010 DOI: 10.1038/s41585-019-0233-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2019] [Indexed: 11/08/2022]
Abstract
Papillary renal cell carcinoma (pRCC) is the second most common renal cell carcinoma (RCC) subtype and accounts for 10-15% of all RCCs. Despite clinical need, few pharmacogenomics studies in pRCC have been performed. Moreover, current research fails to adequately include pRCC laboratory models, such as the ACHN or Caki-2 pRCC cell lines. The molecular mechanisms involved in pRCC development and drug resistance are more diverse than in clear-cell RCC, in which inactivation of VHL occurs in the majority of tumours. Drug resistance to multiple therapies in pRCC occurs via genetic alteration (such as mutations resulting in abnormal receptor tyrosine kinase activation or RALBP1 inhibition), dysregulation of signalling pathways (such as GSK3β-EIF4EBP1, PI3K-AKT and the MAPK or interleukin signalling pathways), deregulation of cellular processes (such as resistance to apoptosis or epithelial-to-mesenchymal transition) and interactions between the cell and its environment (for example, through activation of matrix metalloproteinases). Improved understanding of resistance mechanisms will facilitate drug discovery and provide new effective therapies. Further studies on novel resistance biomarkers are needed to improve patient prognosis and stratification as well as drug development.
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Mitchell TJ, Turajlic S, Rowan A, Nicol D, Farmery JHR, O'Brien T, Martincorena I, Tarpey P, Angelopoulos N, Yates LR, Butler AP, Raine K, Stewart GD, Challacombe B, Fernando A, Lopez JI, Hazell S, Chandra A, Chowdhury S, Rudman S, Soultati A, Stamp G, Fotiadis N, Pickering L, Au L, Spain L, Lynch J, Stares M, Teague J, Maura F, Wedge DC, Horswell S, Chambers T, Litchfield K, Xu H, Stewart A, Elaidi R, Oudard S, McGranahan N, Csabai I, Gore M, Futreal PA, Larkin J, Lynch AG, Szallasi Z, Swanton C, Campbell PJ. Timing the Landmark Events in the Evolution of Clear Cell Renal Cell Cancer: TRACERx Renal. Cell 2018; 173:611-623.e17. [PMID: 29656891 PMCID: PMC5927631 DOI: 10.1016/j.cell.2018.02.020] [Citation(s) in RCA: 324] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/10/2017] [Accepted: 02/07/2018] [Indexed: 02/07/2023]
Abstract
Clear cell renal cell carcinoma (ccRCC) is characterized by near-universal loss of the short arm of chromosome 3, deleting several tumor suppressor genes. We analyzed whole genomes from 95 biopsies across 33 patients with clear cell renal cell carcinoma. We find hotspots of point mutations in the 5' UTR of TERT, targeting a MYC-MAX-MAD1 repressor associated with telomere lengthening. The most common structural abnormality generates simultaneous 3p loss and 5q gain (36% patients), typically through chromothripsis. This event occurs in childhood or adolescence, generally as the initiating event that precedes emergence of the tumor's most recent common ancestor by years to decades. Similar genomic changes drive inherited ccRCC. Modeling differences in age incidence between inherited and sporadic cancers suggests that the number of cells with 3p loss capable of initiating sporadic tumors is no more than a few hundred. Early development of ccRCC follows well-defined evolutionary trajectories, offering opportunity for early intervention.
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Affiliation(s)
- Thomas J Mitchell
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK; Academic Urology Group, Department of Surgery, Addenbrooke's Hospitals NHS Foundation Trust, University of Cambridge, Hills Road, Cambridge CB2 0QQ, UK
| | - Samra Turajlic
- Translational Cancer Therapeutics Laboratory, the Francis Crick Institute, 1 Midland Rd, London NW1 1AT, UK; Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Andrew Rowan
- Translational Cancer Therapeutics Laboratory, the Francis Crick Institute, 1 Midland Rd, London NW1 1AT, UK
| | - David Nicol
- Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - James H R Farmery
- CRUK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UK
| | - Tim O'Brien
- Guy's and St Thomas' National Health Service (NHS) Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| | - Inigo Martincorena
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK
| | - Patrick Tarpey
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK
| | - Nicos Angelopoulos
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK
| | - Lucy R Yates
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK; Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Adam P Butler
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK
| | - Keiran Raine
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK
| | - Grant D Stewart
- Academic Urology Group, Department of Surgery, Addenbrooke's Hospitals NHS Foundation Trust, University of Cambridge, Hills Road, Cambridge CB2 0QQ, UK
| | - Ben Challacombe
- Guy's and St Thomas' National Health Service (NHS) Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| | - Archana Fernando
- Guy's and St Thomas' National Health Service (NHS) Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| | - Jose I Lopez
- Department of Pathology, Cruces University Hospital, Biocruces Institute, University of the Basque Country (UPV/EHU), Barakaldo, Spain
| | - Steve Hazell
- Translational Cancer Therapeutics Laboratory, the Francis Crick Institute, 1 Midland Rd, London NW1 1AT, UK
| | - Ashish Chandra
- Guy's and St Thomas' National Health Service (NHS) Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| | - Simon Chowdhury
- Guy's and St Thomas' National Health Service (NHS) Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| | - Sarah Rudman
- Guy's and St Thomas' National Health Service (NHS) Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| | - Aspasia Soultati
- Guy's and St Thomas' National Health Service (NHS) Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| | - Gordon Stamp
- Experimental Histopathology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Nicos Fotiadis
- Interventional Radiology Department, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Lisa Pickering
- Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Lewis Au
- Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Lavinia Spain
- Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Joanna Lynch
- Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Mark Stares
- Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Jon Teague
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK
| | - Francesco Maura
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK
| | - David C Wedge
- Big Data Institute, University of Oxford, Old Road Campus, Oxford OX3 7FZ, UK
| | - Stuart Horswell
- Bioinformatics and Biostatistics STP, Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Tim Chambers
- Translational Cancer Therapeutics Laboratory, the Francis Crick Institute, 1 Midland Rd, London NW1 1AT, UK
| | - Kevin Litchfield
- Translational Cancer Therapeutics Laboratory, the Francis Crick Institute, 1 Midland Rd, London NW1 1AT, UK
| | - Hang Xu
- Translational Cancer Therapeutics Laboratory, the Francis Crick Institute, 1 Midland Rd, London NW1 1AT, UK
| | - Aengus Stewart
- Bioinformatics and Biostatistics STP, Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Reza Elaidi
- Hôpital Européen Georges Pompidou 20, rue Leblanc, 75908 Paris, France
| | - Stéphane Oudard
- Hôpital Européen Georges Pompidou 20, rue Leblanc, 75908 Paris, France
| | - Nicholas McGranahan
- Translational Cancer Therapeutics Laboratory, the Francis Crick Institute, 1 Midland Rd, London NW1 1AT, UK; Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK
| | - Istvan Csabai
- Department of Physics of Complex Systems, Eotvos Lorand University, Budapest, Hungary
| | - Martin Gore
- Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - P Andrew Futreal
- The University of Texas MD Anderson Cancer Center, Department of Genomic Medicine, Houston, TX 77030, USA
| | - James Larkin
- Renal and Skin Units, The Royal Marsden National Health Service (NHS) Foundation Trust, London SW3 6JJ, UK
| | - Andy G Lynch
- CRUK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UK; School of Medicine, University of St. Andrews, North Haugh, St. Andrews KY16 9TF, UK
| | - Zoltan Szallasi
- Centre for Biological Sequence Analysis, Technical University of Denmark, Lyngby, Denmark; Children's Hospital Informatics Program at the Harvard-MIT Division of Health Sciences and Technology (CHIP@HST), Harvard Medical School, Boston, MA, USA
| | - Charles Swanton
- Translational Cancer Therapeutics Laboratory, the Francis Crick Institute, 1 Midland Rd, London NW1 1AT, UK; Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK; Department of Medical Oncology, University College London Hospitals, 235 Euston Rd, Fitzrovia, London NW1 2BU, UK.
| | - Peter J Campbell
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK; Department of Haematology, University of Cambridge, Cambridge CB2 2XY, UK.
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Dahlgren PN, Bishop K, Dey S, Herbert BS, Tanaka H. Development of a New Monochrome Multiplex qPCR Method for Relative Telomere Length Measurement in Cancer. Neoplasia 2018; 20:425-431. [PMID: 29573637 PMCID: PMC5915991 DOI: 10.1016/j.neo.2018.02.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/14/2018] [Accepted: 02/19/2018] [Indexed: 01/30/2023] Open
Abstract
Excess telomere shortening has been observed in most cancer cells. The telomere quantitative polymerase chain reaction (qPCR) assay has become an important tool for epidemiological studies examining the effects of aging, stress, and other factors on the length of telomeres. Current telomere qPCR methods analyze the relative length of telomeres by amplifying telomere sequence products and normalizing with single-copy gene products. However, the current telomere qPCR does not always reflect absolute telomere length in cancer DNA. Because of genomic instability in cancer cells, we hypothesized that the use of single-copy genes (scg) is less accurate for normalizing data in cancer DNA and that new primer sets are required to better represent relative telomere length in cancer DNA. We first confirmed that cancer cells had a different copy ratio among different scg, implying that DNA is aneuploid. By using the new primer sets that amplify multiple-copy sequences (mcs) throughout the genome, the telomere qPCR results showed that the mcs primers were interchangeable with the scg primers as reference primers in normal DNA. By comparing results from the traditional southern blotting method (as kilobases) and results from monochrome multiplex qPCR using the mcs primers (as T/M ratios), we verified that the T/M ratio is highly correlated with absolute telomere length from the southern blot analysis. Together, the mcs primers were able to represent the telomere lengths accurately in cancer DNA samples. These results would allow for analyses of telomeres within cancerous DNA and the development of new, less invasive diagnostic tools for cancer.
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Affiliation(s)
- Paige N Dahlgren
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | - Kanokwan Bishop
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | - Shatovisha Dey
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | - Brittney-Shea Herbert
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | - Hiromi Tanaka
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN.
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5
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Abe S, Tanaka H, Notsu T, Horike SI, Fujisaki C, Qi DL, Ohhira T, Gilley D, Oshimura M, Kugoh H. Localization of an hTERT repressor region on human chromosome 3p21.3 using chromosome engineering. Genome Integr 2010; 1:6. [PMID: 20678252 PMCID: PMC2907559 DOI: 10.1186/2041-9414-1-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2010] [Accepted: 05/26/2010] [Indexed: 11/10/2022] Open
Abstract
Telomerase is a ribonucleoprotein enzyme that synthesizes telomeric DNA. The reactivation of telomerase activity by aberrant upregulation/expression of its catalytic subunit hTERT is a major pathway in human tumorigenesis. However, regulatory mechanisms that control hTERT expression are largely unknown. Previously, we and others have demonstrated that the introduction of human chromosome 3, via microcell-mediated chromosome transfer (MMCT), repressed transcription of the hTERT gene. These results suggested that human chromosome 3 contains a regulatory factor(s) involved in the repression of hTERT. To further localize this putative hTERT repressor(s), we have developed a unique experimental approach by introducing various truncated chromosome 3 regions produced by a novel chromosomal engineering technology into the renal cell carcinoma cell line (RCC23 cells). These cells autonomously express ectopic hTERT (exohTERT) promoted by a retroviral LTR promoter in order to permit cellular division after repression of endogenous hTERT. We found a telomerase repressor region located within a 7-Mb interval on chromosome 3p21.3. These results provide important information regarding hTERT regulation and a unique method to identify hTERT repressor elements.
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Affiliation(s)
- Satoshi Abe
- Department of Biomedical Science, Graduate School of Medical Science, and Chromosome Engineering Research Center, Tottori University, 86 Nishicho, Yonago 683-8503, Japan.
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6
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Chen M, Ye Y, Yang H, Tamboli P, Matin S, Tannir NM, Wood CG, Gu J, Wu X. Genome-wide profiling of chromosomal alterations in renal cell carcinoma using high-density single nucleotide polymorphism arrays. Int J Cancer 2009; 125:2342-8. [PMID: 19521957 DOI: 10.1002/ijc.24642] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The identification of genetic aberrations may help understand the mechanisms of tumorigenesis and has important implications in diagnosis, prognosis and treatment. We applied Illumina's 317K high-density single nucleotide polymorphism (SNP) arrays to profile chromosomal aberrations in clear cell renal cell carcinoma (ccRCC) from 80 patients and analyzed the association of LOH/amplification events with clinicopathological characteristics and telomere length. The most common loss of heterozygosity (LOH) were 3p (69 cases) including 38 whole 3p arm losses, 30 large fragment LOH (spanning 3p21-36), and 1 interstitial LOH (spanning 3p12-14, 3p21-22, 3p24.1-24.2 and 3p24.3), followed by chromosome losses at 8p12-pter, 6q23.3-27, 14q24.1-qter, 9q32-qter, 10q22.3-qter, 9p13.3-pter, 4q28.3-qter and 13q12.1-21.1. We also found several smallest overlapping regions of LOH that contained tumor suppressor genes. One smallest LOH in 8p12 had a size of 0.29 Mb and only contained one gene (NRG1). The most frequent chromosome gains were at 5q (32 cases), including 10 whole 5q amplification, 21 large amplifications encompassing 5q32-ter and 1 focal amplification in 5q35.3 (0.42 Mb). The other common chromosome gains were 1q25.1-qter, 7q21.13-qter, 8q24.12-qter and whole 7p arm. Significant associations of LOH at 9p, 9q, 14q and 18q were observed with higher nuclear grade. Significant associations with tumor stage were observed for LOH at 14q, 18p and 21q. Finally, we found that tumors with LOH at 2q, 6p, 6q, 9p, 9q and 17p had significantly shorter telomere length than those without LOH. This is the first study to use Illumina's SNP-CGH array that provides a close estimate of the size and frequency of chromosome LOH and amplifications of ccRCC. The identified regions and genes may become diagnostic and prognostic biomarkers as well as potential targets of therapy.
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Affiliation(s)
- Meng Chen
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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7
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CSF1R copy number changes, point mutations, and RNA and protein overexpression in renal cell carcinomas. Mod Pathol 2009; 22:744-52. [PMID: 19377443 DOI: 10.1038/modpathol.2009.43] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Renal cell carcinomas comprise a heterogeneous group of tumors. Of these, 80% are clear cell renal cell carcinomas, which are characterized by loss of 3p, often with concomitant gain of 5q22qter. Although VHL is considered the main target gene of the 3p deletions, none has been identified as the relevant target gene for the 5q gain. We have studied 75 consecutive kidney tumors and paired normal kidney samples to evaluate at the genomic and expression levels the tyrosine kinase genes CSF1R and PDGFRB as potential targets in this region. Our findings show that RNA expression of CSF1R, but not of PDGFRB, was significantly higher in clear cell renal cell carcinomas than in normal tissue samples, something that was corroborated at the protein level by immunohistochemistry. The CSF1R staining pattern in clear cell renal cell carcinomas was clearly different from that observed in other renal cell carcinomas, suggesting its potential usefulness in differential diagnosis. FISH analysis demonstrated whole chromosomal gain and relative CSF1R/PDGFRB copy number gain in clear cell renal cell carcinomas, which might contribute to CSF1R overexpression. Finally, one polymorphism and two novel mutations were identified in CSF1R in clear cell renal cell carcinoma patients. Our data allow us to conclude that CSF1R plays a relevant role in clear cell renal cell carcinoma carcinogenesis and raise the possibility that CSF1R may represent a future valuable therapeutic target in these patients.
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8
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Law FBF, Chen YW, Wong KY, Ying J, Tao Q, Langford C, Lee PY, Law S, Cheung RWL, Chui CH, Tsao GSW, Lam KY, Wong J, Srivastava G, Tang JCO. Identification of a novel tumor transforming gene GAEC1 at 7q22 which encodes a nuclear protein and is frequently amplified and overexpressed in esophageal squamous cell carcinoma. Oncogene 2007; 26:5877-88. [PMID: 17384685 PMCID: PMC2875854 DOI: 10.1038/sj.onc.1210390] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
By comparative DNA fingerprinting, we identified a 357-bp DNA fragment frequently amplified in esophageal squamous cell carcinomas (ESCC). This fragment overlaps with an expressed sequence tag mapped to 7q22. Further 5' and 3'-rapid amplification of cDNA ends revealed that it is part of a novel, single-exon gene with full-length mRNA of 2052 bp and encodes a nuclear protein of 109 amino acids ( approximately 15 kDa). This gene, designated as gene amplified in esophageal cancer 1 (GAEC1), was located within a 1-2 Mb amplicon at 7q22.1 identified by high-resolution 1 Mb array-comparative genomic hybridization in 6/10 ESCC cell lines. GAEC1 was ubiquitously expressed in normal tissues including esophageal and gastrointestinal organs; with amplification and overexpression in 6/10 (60%) ESCC cell lines and 34/99 (34%) primary tumors. Overexpression of GAEC1 in 3T3 mouse fibroblasts caused foci formation and colony formation in soft agar, comparable to H-ras and injection of GAEC1-transfected 3T3 cells into athymic nude mice formed undifferentiated sarcoma in vivo, indicating that GAEC1 is a transforming oncogene. Although no significant correlation was observed between GAEC1 amplification and clinicopathological parameters and prognosis, our study demonstrated that overexpressed GAEC1 has tumorigenic potential and suggest that overexpressed GAEC1 may play an important role in ESCC pathogenesis.
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Affiliation(s)
- FBF Law
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - YW Chen
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - KY Wong
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - J Ying
- Cancer Epigenetics Laboratory, State Key Laboratory in Oncology in South China, Sir YK Pao Center for Cancer, Department of Clinical Oncology, Hong Kong Cancer Institute and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong
| | - Q Tao
- Cancer Epigenetics Laboratory, State Key Laboratory in Oncology in South China, Sir YK Pao Center for Cancer, Department of Clinical Oncology, Hong Kong Cancer Institute and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong
| | | | - PY Lee
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - S Law
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - RWL Cheung
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - C. H. Chui
- Lo Ka Chung Centre for Natural Anti-Cancer Drug Development, The Hong Kong Polytechnic University, Hong Kong
| | - GSW Tsao
- Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - KY Lam
- Department of Pathology, Griffith University, Queensland, Australia
| | - J Wong
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - G Srivastava
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Johnny CO Tang
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
- Lo Ka Chung Centre for Natural Anti-Cancer Drug Development, The Hong Kong Polytechnic University, Hong Kong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology, Shenzhen, PR China
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9
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Skolarikos AA, Papatsoris AG, Alivizatos G, Deliveliotis C. Molecular pathogenetics of renal cancer. Am J Nephrol 2006; 26:218-31. [PMID: 16733347 DOI: 10.1159/000093631] [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] [Received: 04/17/2006] [Accepted: 04/18/2006] [Indexed: 01/17/2023]
Abstract
Recent developments in genetics and molecular biology have led to an increased understanding of the pathobiology of renal cancer. Thorough knowledge of the molecular pathways associated with renal cancer is a prerequisite for novel potential therapeutic interventions. Studies are ongoing to evaluate novel anticancer agents that target specific molecular entities. This article reviews current knowledge on the genetics and molecular pathogenesis of sporadic and inherited forms of renal cancer.
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Affiliation(s)
- Andreas A Skolarikos
- Athens Medical School, 2nd Department of Urology, Sismanoglio Hospital, Athens, Greece.
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10
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Jones TD, Eble JN, Cheng L. Application of molecular diagnostic techniques to renal epithelial neoplasms. Clin Lab Med 2005; 25:279-303. [PMID: 15848737 DOI: 10.1016/j.cll.2005.01.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The application of molecular and cytogenetic techniques to the study of renal neoplasia has resulted in improved understanding of the biologic mechanisms that are responsible for tumor development and progression. It also revealed that several different and specific genetic events are responsible for tumorigenesis in the various categories and subcategories of renal tumors. The ultimate goal of research on the molecular pathology of renal neoplasms is a complete understanding of the genetics of these tumors, which will, in turn, aid in making the correct diagnosis, accurately assessing prognosis, and selecting appropriate and targeted therapeutic options.
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MESH Headings
- Adenocarcinoma, Clear Cell/diagnosis
- Adenocarcinoma, Clear Cell/genetics
- Adenocarcinoma, Clear Cell/pathology
- Adenoma, Oxyphilic/diagnosis
- Adenoma, Oxyphilic/genetics
- Adenoma, Oxyphilic/pathology
- Basic Helix-Loop-Helix Leucine Zipper Transcription Factors
- Carcinoma, Papillary/diagnosis
- Carcinoma, Papillary/genetics
- Carcinoma, Papillary/pathology
- Carcinoma, Renal Cell/diagnosis
- Carcinoma, Renal Cell/genetics
- Carcinoma, Renal Cell/pathology
- DNA-Binding Proteins/genetics
- Gene Dosage
- Humans
- Kidney Neoplasms/diagnosis
- Kidney Neoplasms/genetics
- Kidney Neoplasms/pathology
- Loss of Heterozygosity
- Transcription Factors/genetics
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Affiliation(s)
- Timothy D Jones
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indiana University Medical Center, University Hospital, Indianapolis, IN 46202, USA
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11
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Receveur AO, Couturier J, Molinié V, Vieillefond A, Desangles F, Guillaud-Bataille M, Danglot G, Coullin P, Bernheim A. Characterization of quantitative chromosomal abnormalities in renal cell carcinomas by interphase four-color fluorescence in situ hybridization. ACTA ACUST UNITED AC 2005; 158:110-8. [PMID: 15796957 DOI: 10.1016/j.cancergencyto.2004.08.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2004] [Revised: 08/09/2004] [Accepted: 08/10/2004] [Indexed: 11/27/2022]
Abstract
Renal cell carcinomas (RCC) in adults are histologically heterogeneous solid tumors with specific chromosomal abnormality patterns included in the World Health Organization (WHO) classification. To overcome some of the drawbacks of cytogenetic and comparative genomic hybridization (CGH) analyses, we designed a first-generation cytogenetic diagnostic test using four-color fluorescence in situ hybridization (FISH) on interphase nuclei. We selected 51 bacterial artificial chromosome and P1-derived artificial chromosome clones covering 17 chromosomal regions involved in the abnormalities of the adult RCC histologic subtypes. An initial set of probes allowed the identification of clear-cell RCC, papillary RCC, and other RCC on a single slide. A second test allowed the detection of additional chromosomal abnormalities or aberrations specific to chromophobic RCC and oncocytomas. We tested 25 cases of RCC, and the results were in agreement with those of cytogenetic techniques and/or CGH methods. The techniques appeared to be very sensitive, because small tumoral cell clones that were undetected by other cytogenetic methods were identified with this method. It was concluded that the multicolor FISH test was specific and sensitive, easy to perform, and could be part of the investigation process in RCC.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Carcinoma, Renal Cell/classification
- Carcinoma, Renal Cell/diagnosis
- Carcinoma, Renal Cell/genetics
- Carcinoma, Renal Cell/pathology
- Carcinoma, Renal Cell/surgery
- Chromosome Aberrations
- Chromosome Deletion
- Clone Cells/pathology
- Cytogenetic Analysis
- Diagnosis, Differential
- Female
- Humans
- In Situ Hybridization, Fluorescence
- Interphase
- Karyotyping
- Kidney Neoplasms/classification
- Kidney Neoplasms/diagnosis
- Kidney Neoplasms/genetics
- Kidney Neoplasms/pathology
- Kidney Neoplasms/surgery
- Male
- Middle Aged
- Neoplasm Staging
- Sensitivity and Specificity
- Translocation, Genetic
- Tumor Cells, Cultured
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Affiliation(s)
- Aline Ossard Receveur
- Laboratoire de Cytogénomique des cancers CNRS UMR 8125, Institut Gustave Roussy, 39 rue Camille Desmoulins 94805, Villejuif cedex 5, France
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12
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Response. Mod Pathol 2004. [DOI: 10.1038/modpathol.3800257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Okamura Y, Haraguchi T, Morimoto M, Okuda M, Une S, Nakaichi M, Taura Y. Expression of a tumor-associated antigen, RCAS1, in canine mammary tumors. J Vet Med Sci 2004; 66:651-8. [PMID: 15240939 DOI: 10.1292/jvms.66.651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Receptor-binding cancer antigen expressed on SiSo cells (RCAS1), one of novel cancer cell-surface antigens, is strongly expressed in invasive cancers. RCAS1 inhibits the in vitro growth of lymphocytes such as T cells and natural killer (NK) cells, and induces apoptotic cell death. We investigated the expression of RCAS1 in canine mammary tumor cell lines and tumor cells by immunohistochemistry, and also in situ deoxyribonucleic acid (DNA) fragmentation in tumor-infiltrating lymphocytes (TILs) by the terminal deoxynucleotidyl transferase mediated deoxyuridine triphosphate nick end labeling (TUNEL) method. All canine mammary tumor cell lines expressed RCAS1 at both the messenger ribonucleic acid (mRNA) and protein level. Immunohistochemically, RCAS1 was negative in 100% of normal mammary glands, but was expressed in 100% of malignant tumors examined. In most malignant mammary tumors, RCAS1 was localized in the cytoplasm with no polarity of expression. In benign mammary tumors, it was detected on the luminal surface of the tumor cell. RCAS1 expression or localization was significantly correlated with malignancy. In situ DNA fragmentation of CD3-positive TILs was observed in RCAS1-expressing tumors. RCAS1-expressing tumors, indicating a possible induction of apoptotic cell death in TILs through RCAS1 expression. These observations suggest that RCAS1 probably plays an important role in tumor progression and escape from immune surveillance in canine mammary tumors.
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Affiliation(s)
- Yasuhiko Okamura
- Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University, Japan
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14
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Moch H. Genomic alterations in renal tumours: what have we learned in the era of comparative genomic hybridisation? Pathology 2004; 36:51-7. [PMID: 14757557 DOI: 10.1080/0031302032000174932] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
One of the major challenges in cancer research is to generate molecular profiles of tumours and establish correlations between genetic changes and clinical parameters by screening technologies. The identification of tumour-specific gene targets has potential diagnostic and therapeutic implications. Metaphase comparative genomic hybridisation has been used to detect relative DNA-sequence copy number gains (including high-level amplifications of chromosomal regions) and copy number losses in human neoplasms. In the past, metaphase comparative genomic hybridisation has been shown to be a powerful genome-wide screening method and this has considerably advanced our understanding of renal cancer biology. Novel molecular technologies, including array-based comparative genomic hybridisation, fluorescence in situ hybridisation (FISH), cDNA and tissue microarrays will serve to facilitate further characterisation of candidate genes residing in chromosomal regions defined by metaphase comparative genomic hybridisation. This review concentrates on the application of metaphase comparative genomic hybridisation in the area of renal cancer research and summarises data obtained from comparative genomic hybridisation studies.
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Affiliation(s)
- Holger Moch
- Institute of Pathology, University of Basel, Switzerland.
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15
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Reiss U, Oskouian B, Zhou J, Gupta V, Sooriyakumaran P, Kelly S, Wang E, Merrill AH, Saba JD. Sphingosine-phosphate lyase enhances stress-induced ceramide generation and apoptosis. J Biol Chem 2003; 279:1281-90. [PMID: 14570870 DOI: 10.1074/jbc.m309646200] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Sphingosine-1-phosphate lyase is a widely expressed enzyme that catalyzes the essentially irreversible cleavage of the signaling molecule sphingosine 1-phosphate. To investigate whether sphingosine-1-phosphate lyase influences mammalian cell fate decisions, a recombinant human sphingosine-1-phosphate lyase fused to green fluorescent protein was expressed in HEK293 cells. The recombinant enzyme was active, localized to the endoplasmic reticulum, and reduced baseline sphingosine and sphingosine 1-phosphate levels. Stable overexpression led to diminished viability under stress, which was attributed to an increase in apoptosis and was reversible in a dose-dependent manner by exogenous sphingosine 1-phosphate. In contrast to sphingosine 1-phosphate, the products of the lyase reaction had no effect on apoptosis. Lyase enzymatic activity was required to potentiate apoptosis, because cells expressing a catalytically inactive enzyme behaved like controls. Stress increased the amounts of long- and very long-chain ceramides in HEK293 cells, and this was enhanced in cells overexpressing wild type but not catalytically inactive lyase. The ceramide increases appeared to be required for apoptosis, because inhibition of ceramide synthase with fumonisin B1 decreased apoptosis in lyase-overexpressing cells. Thus, sphingosine-1-phosphate lyase overexpression in HEK293 cells decreases sphingosine and sphingosine 1-phosphate amounts but elevates stress-induced ceramide generation and apoptosis. This identifies sphingosine-1-phosphate lyase as a dual modulator of sphingosine 1-phosphate and ceramide metabolism as well as a regulator of cell fate decisions and, hence, a potential target for diseases with an imbalance in these biomodulators, such as cancer.
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Affiliation(s)
- Ulrike Reiss
- Children's Hospital Oakland Research Institute, Oakland, California 94609-1673, USA
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16
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Abstract
The recognition of hereditary forms of renal cancer and the development of high-throughput genetic analysis have led to the identification of genes responsible for familial renal epithelial tumors of differing histologies and cytogenetic features. Some of these genes (VHL) are known to have an important role in sporadic renal neoplasia. This article describes the various epithelial renal tumors most commonly encountered by the urologist, the molecular and cytogenetic distinctions between them, and the hereditary syndromes that predispose to these tumors. Consideration of these syndromes is important for proper treatment when one encounters patients with multiple renal tumors, tumors at an early age of onset, or patients with a positive family history of renal cell carcinoma.
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Affiliation(s)
- Christian P Pavlovich
- James Buchanan Brady Urological Institute, A-345 Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, Baltimore, MD 21224, USA.
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17
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Pavlovich CP, Padilla-Nash H, Wangsa D, Nickerson ML, Matrosova V, Linehan WM, Ried T, Phillips JL. Patterns of aneuploidy in stage IV clear cell renal cell carcinoma revealed by comparative genomic hybridization and spectral karyotyping. Genes Chromosomes Cancer 2003; 37:252-60. [PMID: 12759923 DOI: 10.1002/gcc.10209] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
We report the use of spectral karyotyping (SKY) and comparative genomic hybridization (CGH) to describe the numerous genomic imbalances characteristic of stage IV clear cell renal cell carcinoma (CCRCC). SKY and CGH were performed on 10 cell lines established from nephrectomy specimens, and CGH on uncultured material from five of the primary renal tumors. The mutational status of VHL (3p25) and MET (7q31), genes implicated in renal carcinogenesis, were determined for each case. Each case showed marked aneuploidy, with an average number of copy alterations of 14.6 (+/-2.7) in the primary tumors and 19.3 (+/-4.6) in the cell lines. Both whole-chromosome and chromosome-segment imbalances were noted by CGH: consistent losses or gains included +5q23-->ter (100%), -3p14-->ter (80%), and +7 (70%). All VHL mutations and 83% of the genomic imbalances found in the primary tumors were also found in the cell lines derived from them. SKY showed many complex structural rearrangements that were undetected by conventional banding analysis in these solid tumors. All cases with VHL inactivation had 3p loss and 5q gain related primarily to unbalanced translocations between 3p and 5q. In contrast, gains of chromosome 7 resulted primarily from whole-chromosome gains and were not associated with mutations of MET. SKY and CGH demonstrated that genomic imbalances in advanced RCC were the result of either segregation errors [i.e., whole chromosomal gains and losses (7.8/case)] or chromosomal rearrangements (10.7/case), of which the majority were unbalanced translocations.
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Affiliation(s)
- Christian P Pavlovich
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
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18
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Meloni-Ehrig AM. Renal cancer: cytogenetic and molecular genetic aspects. AMERICAN JOURNAL OF MEDICAL GENETICS 2002; 115:164-72. [PMID: 12407697 DOI: 10.1002/ajmg.10697] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To date, much progress has been made in the fields of cytogenetics and molecular genetics of renal tumors. The previous and recent findings have delineated the characteristics of the various tumors, particularly the cytogenetic and molecular differences that exist between papillary and nonpapillary clear cell renal cell carcinomas (RCCs). At the same time, new cytogenetic subtypes have emerged [e.g., t(X;1)] in subtypes of RCC, while in others (e.g., Wilms tumors) several new cytogenetic abnormalities and consequent molecular involvement have been found. In addition to Wilms tumor, papillary RCC, and clear-cell RCC, cytogenetic and fluorescence in situ hybridization analyses have been performed on several other tumors of the kidney, including chromophobic carcinoma, metanephric adenoma, collecting duct carcinoma, transitional cell carcinoma, congenital mesoblastic nephroma, and malignant rhabdoid tumors of the kidney. This review is therefore intended to present a concise update on the cytogenetic and molecular data on renal tumors, focusing mainly on the clinical usefulness of the findings reported in the literature.
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Affiliation(s)
- Aurelia M Meloni-Ehrig
- University of Utah, School of Medicine, Department of Pediatrics, Salt Lake City, Utah 84132, USA.
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19
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Nagao K, Yoshihiro S, Matsuyama H, Yamaguchi S, Oba K, Naito K. Clinical significance of allelic loss of chromosome region 5q22.3 approximately q23.2 in nonpapillary renal cell carcinoma. CANCER GENETICS AND CYTOGENETICS 2002; 136:23-30. [PMID: 12165447 DOI: 10.1016/s0165-4608(02)00511-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
To analyze the clinical significance of copy number gain and loss at chromosome region 5q21 approximately q23, 105 nonpapillary renal cell carcinomas (RCC) were examined by interphase cytogenetic analysis using the dual-color fluorescence in situ hybridization (FISH) technique. DNA probes for D5S23 (5p15.2), cCI5-243 (5q21.2 approximately q21.3), and cCI5-215 (5q22.3 approximately q23.2) were used, and the signals for cCI5-243 and cCI5-215 were compared with those for D5S23 as the numerical control. Aneusomy (three or more copies) of chromosome 5 was found in 22 tumors (21.0%). Aneusomy was significantly correlated with loss at 5q21 approximately q23, while disomy with gain at 5q21 approximately q23 (P<0.05). Aneusomy was also significantly related to poor disease-specific survival (P<0.01). Gain and loss at cCI5-243 were seen in 34 (32.4%) and 59 (56.2%) tumors, respectively, while gain and loss at cCI5-215 occurred in 55 (52.4%) and 45 (42.9%) cases, respectively. The frequency of gain at cCI5-215 was significantly correlated with a smaller tumor diameter (7 cm or less, P<0.05), while loss with a larger one (>7 cm, P<0.05). Both loss at cCI5-215 and aneusomy of chromosome 5 were significantly related to poor disease-specific survival (P<0.05). In conclusion, alterations of chromosome 5 (including allelic loss of 5q22.3 approximately q23.2) could be a useful genetic marker for predicting the patient prognosis of RCC.
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Affiliation(s)
- Kazuhiro Nagao
- Department of Urology, Yamaguchi University School of Medicine, 1-1-1, Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan.
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20
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Nakakubo Y, Hida Y, Miyamoto M, Hashida H, Oshikiri T, Kato K, Suzuoki M, Hiraoka K, Ito T, Morikawa T, Okushiba S, Kondo S, Katoh H. The prognostic significance of RCAS1 expression in squamous cell carcinoma of the oesophagus. Cancer Lett 2002; 177:101-5. [PMID: 11809537 DOI: 10.1016/s0304-3835(01)00773-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Overexpression of RCAS1 (receptor-binding cancer antigen expressed on SiSo cells) protects cancer cells from immune attack and might be related to poor prognosis in several cancers. We investigated the immunoreactivity of RCAS1 and its correlation with clinicopathological features in 95 patients who underwent surgical resection for oesophageal squamous cell carcinoma. Thirty-two of the 95 (33.7%) cases were strongly positive for RCAS1. RCAS1 showed significant correlations with age and stage grouping. Expression of RCAS1 was associated with shorter postoperative survival. Multivariate analysis indicated that RCAS1 positivity was an independent negative prognostic factor. Our study establishes RCAS1 as a novel prognostic marker for surgically resected oesophageal squamous cell carcinoma.
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Affiliation(s)
- Yoshihiro Nakakubo
- Hokkaido University Graduate School of Medicine, Division of Cancer Medicine, Cancer Medicine, Surgical Oncology, N-14, W-5, Sapporo 060-8648, Japan.
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21
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Phillips JL, Pavlovich CP, Walther M, Ried T, Linehan WM. The genetic basis of renal epithelial tumors: advances in research and its impact on prognosis and therapy. Curr Opin Urol 2001; 11:463-9. [PMID: 11493766 DOI: 10.1097/00042307-200109000-00003] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The genetics of renal cell carcinoma continues to elucidate the pathways of kidney tumorigenesis. The relationship between the VHL gene and clear cell carcinoma, MET and papillary carcinoma, and the families of genes that they regulate, continues to be unraveled. New hereditary kidney cancer syndromes, like familial oncocytoma and the Birt-Hogg-Dubé syndrome, have been identified and the search for the genes that cause them is under way. Researching the genetics of these disorders is essential for an understanding of sporadic kidney cancer genetics. This chapter will review the current knowledge of the hereditary kidney cancer syndromes, the genes that cause them, new advances in genetic research and techniques, and how this information impacts upon diagnostic, prognostic, and therapeutic methods of the future.
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Affiliation(s)
- J L Phillips
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
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22
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Tsukasaki K, Krebs J, Nagai K, Tomonaga M, Koeffler HP, Bartram CR, Jauch A. Comparative genomic hybridization analysis in adult T-cell leukemia/lymphoma: correlation with clinical course. Blood 2001; 97:3875-81. [PMID: 11389029 DOI: 10.1182/blood.v97.12.3875] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sixty-four patients with adult T-cell leukemia/lymphoma (ATL; 18 patients with indolent subtype and 46 with aggressive subtype) associated with human T-lymphotropic virus type 1 (HTLV-1) were analyzed using comparative genomic hybridization (CGH). The most frequent observations were gains at chromosomes 14q, 7q, and 3p and losses at chromosomes 6q and 13q. Chromosome imbalances, losses, and gains were more frequently observed in aggressive ATL than in indolent ATL, with significant differences between the 2 ATL subtypes at gains of 1q and 4q. An increased number of chromosomal imbalances was associated with a significantly shorter survival in all patients. A high number of chromosomal losses was associated with a poor prognosis in indolent ATL, whereas the presence of 7q+ was marginally associated with a good prognosis in aggressive ATL. Paired samples (ie, samples obtained at different sites from 4 patients) and sequential samples from 13 patients (from 6 during both chronic disease and acute crisis and from 7 during both acute onset and relapse) were examined by CGH and Southern blotting for HTLV-1. All but 2 paired samples showed differences on CGH assessment. Two chronic/crisis samples showed distinct results regarding both CGH and HTLV-1 integration sites, indicating clonal changes in ATL at crisis. In 11 patients, the finding of identical HTLV-1 sites and clonally related CGH results suggested a common origin of sequential samples. In contrast to chronic/crisis samples, CGH results with all acute/relapse sample pairs showed the presence of clonally related but not evolutional subclones at relapse, thereby suggesting marked chromosomal instability. In summary, clonal diversity is common during progression of ATL, and CGH alterations are associated with clinical course. (Blood. 2001;97:3875-3881)
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Affiliation(s)
- K Tsukasaki
- Division of Hematology/Oncology, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, CA, USA.
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Kim DG, Park SY, You KR, Lee GB, Kim H, Moon WS, Chun YH, Park SH. Establishment and characterization of chromosomal aberrations in human cholangiocarcinoma cell lines by cross-species color banding. Genes Chromosomes Cancer 2001; 30:48-56. [PMID: 11107175 DOI: 10.1002/1098-2264(2000)9999:9999<::aid-gcc1053>3.0.co;2-p] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Cholangiocarcinoma (CC), a malignant neoplasm of the biliary epithelium, is usually fatal because of difficulty in early diagnosis and lack of availability of effective therapy. Furthermore, little is known about the genetics and biology of CC. Only a few reports concerning cytogenetic studies of CC have been published, and few cell lines have been established. We recently established four CC cell lines, designated as SCK, JCK, Cho-CK, and Choi-CK, and report the first application of cross-species color banding (RxFISH) and multiple chromosome painting for the characterization of the chromosomal rearrangements of these CC cell lines. Each cell line had unique modal karyotypic characteristics and showed a variable number of numerical and structural clonal cytogenetic aberrations. Chromosomes 3, 6, 7, 8, 12, 14, 17, and 18 were commonly involved in structural abnormalities. Homogeneously staining regions were determined in SCK and JCK, and double minute chromosomes were found in Cho-CK. The chromosomal aberrations of the four CC cell lines were effectively analyzed by RxFISH and FISH with multiple chromosome painting probes. The nonrandom rearrangements suggest candidate regions for isolation of genes related to CC.
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Affiliation(s)
- D G Kim
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School, Chonju, Korea
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24
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Ikeda K, Sato M, Tsutsumi O, Tsuchiya F, Tsuneizumi M, Emi M, Imoto I, Inazawa J, Muramatsu M, Inoue S. Promoter analysis and chromosomal mapping of human EBAG9 gene. Biochem Biophys Res Commun 2000; 273:654-60. [PMID: 10873660 DOI: 10.1006/bbrc.2000.2920] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The human EBAG9 was previously identified as an estrogen responsive gene using CpG-genomic binding site cloning (Watanate et al., (1998) Mol. Cell. Biol. 18: 442-449). Recently it was revealed that the EBAG9 is identical with RCAS1 which is a cancer cell surface antigen implicated in immune escape. Here, we isolated and analyzed the 5'-flanking region of human EBAG9 gene. We determined transcription initiation site, which has a homology with an initiator element YYCAYYYY, and found that TATA motif was absent. Deletion analysis of the 5'-flanking region using MCF-7 breast cancer cells indicated that the sequences -86 to -36 containing the ERE had the basal level of promoter activity and the upstream GC-rich region positively regulated the activity. EBAG9 promoter luciferase reporters containing the ERE could respond to estrogen, and electrophoretic mobility shift assay showed that ERalpha bound to the ERE. Moreover, fluorescent in situ hybridization analysis has shown that the human EBAG9 gene is located at chromosome 8q23 which is frequently amplified in tumors. These findings suggest that the human EBAG9 might be involved in carcinogenesis as an estrogen responsive gene.
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Affiliation(s)
- K Ikeda
- Department of Biochemistry, Saitama Medical School, Moroyama, Iruma-gun, Saitama, 350-0495, Japan
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