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Nemours S, Armesto M, Arestín M, Manini C, Giustetto D, Sperga M, Pivovarcikova K, Pérez-Montiel D, Hes O, Michal M, López JI, Lawrie CH. Non-coding RNA and gene expression analyses of papillary renal neoplasm with reverse polarity (PRNRP) reveal distinct pathological mechanisms from other renal neoplasms. Pathology 2024; 56:493-503. [PMID: 38413252 DOI: 10.1016/j.pathol.2023.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 10/25/2023] [Accepted: 11/14/2023] [Indexed: 02/29/2024]
Abstract
Papillary renal neoplasm with reversed polarity (PRNRP) is a recently described rare renal neoplasm. Traditionally, it was considered a variant of papillary renal cell carcinoma (PRCC). However, several studies reported significant differences between PRNRP and PRCC in terms of clinical, morphological, immunohistochemical and molecular features. Nonetheless, PRNRP remains a poorly understood entity. We used microarray analysis to elucidate the non-coding RNA (ncRNA) and gene expression profiles of 10 PRNRP cases and compared them with other renal neoplasms. Unsupervised cluster analysis showed that PRNRP had distinct expression profiles from either clear cell renal cell carcinoma (ccRCC) or PRCC cases at the level of ncRNA but were less distinct at the level of gene expression. An integrated omic approach determined miRNA:gene interactions that distinguished PRNRP from PRCC and we validated 10 differentially expressed miRNAs and six genes by quantitative RT-PCR. We found that levels of the miRNAs, miR-148a, miR-375 and miR-429, were up-regulated in PRNRP cases compared to ccRCC and PRCC. miRNA target genes, including KRAS and VEGFA oncogenes, and CXCL8, which regulates VEGFA, were also differentially expressed between renal neoplasms. Gene set enrichment analysis (GSEA) determined different activation of metabolic pathways between PRNRP and PRCC cases. Overall, this study is by far the largest molecular study of PRNRP cases and the first to investigate either ncRNA expression or their gene expression by microarray assays.
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MESH Headings
- Humans
- Kidney Neoplasms/genetics
- Kidney Neoplasms/pathology
- Kidney Neoplasms/metabolism
- Carcinoma, Renal Cell/genetics
- Carcinoma, Renal Cell/pathology
- Carcinoma, Renal Cell/metabolism
- Middle Aged
- Female
- Male
- Aged
- RNA, Untranslated/genetics
- Gene Expression Profiling
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Gene Expression Regulation, Neoplastic
- Adult
- Carcinoma, Papillary/pathology
- Carcinoma, Papillary/genetics
- Carcinoma, Papillary/metabolism
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
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Affiliation(s)
- Stéphane Nemours
- Biogipuzkoa Health Research Institute, Oncology Area, Molecular Oncology Group, San Sebastian, Spain
| | - María Armesto
- Biogipuzkoa Health Research Institute, Oncology Area, Molecular Oncology Group, San Sebastian, Spain
| | - María Arestín
- Biogipuzkoa Health Research Institute, Oncology Area, Molecular Oncology Group, San Sebastian, Spain
| | - Claudia Manini
- Department of Pathology, San Giovanni Bosco Hospital, ASL Città di Torino, Turin, Italy; Department of Sciences of Public Health and Pediatrics, University of Turin, Italy
| | - Doriana Giustetto
- Department of Pathology, Maria Victoria Hospital, ASL Città di Torino, Turin, Italy
| | - Maris Sperga
- Department of Pathology, Stradin's University, Riga, Latvia
| | - Kristyna Pivovarcikova
- Department of Pathology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | | | - Ondrej Hes
- Department of Pathology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Michal Michal
- Department of Pathology, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic; Bioptical Laboratory Ltd, Pilsen, Czech Republic
| | - José I López
- Biocruces-Bizkaia Health Research Institute, Barakaldo, Spain
| | - Charles H Lawrie
- Biogipuzkoa Health Research Institute, Oncology Area, Molecular Oncology Group, San Sebastian, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain; Sino-Swiss Institute of Advanced Technology (SSIAT), University of Shanghai, Shanghai, China; Radcliffe Department of Medicine, University of Oxford, Oxford, UK.
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2
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Integrated mRNA and miRNA Transcriptomic Analyses Reveals Divergent Mechanisms of Sunitinib Resistance in Clear Cell Renal Cell Carcinoma (ccRCC). Cancers (Basel) 2021; 13:cancers13174401. [PMID: 34503211 PMCID: PMC8430814 DOI: 10.3390/cancers13174401] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 12/31/2022] Open
Abstract
Simple Summary Clear cell renal cell carcinoma (ccRCC) is a frequent cancer that causes more than 100,000 deaths every year. Treatment with drugs that target enzymes that help tumours grow such as sunitinib have greatly improved the prospects for ccRCC patients, however a large proportion of patients become resistant. We created sunitinib resistant cell lines and identified consequent changes in gene (and miRNA) expression by microarray analyses. Using this approach, we identified different pathways of resistance suggesting that tumour cells have many ways to overcome sunitinib treatment. We were able to overcome resistance in cells by inhibiting a protein, PD-L1, that is targeted by many immunotherapeutics currently in use for ccRCC patients suggesting a combination of immunotherapy and sunitinib may benefit patients. In addition, we identified miRNAs that are common to multiple resistance mechanisms suggesting they may be useful targets for future studies. Abstract The anti-angiogenic therapy sunitinib remains the standard first-line treatment for meta static clear cell renal cell carcinoma (ccRCC). However, acquired resistance develops in nearly all responsive patients and represents a major source of treatment failure. We used an integrated miRNA and mRNA transcriptomic approach to identify miRNA:target gene interactions involved in sunitinib resistance. Through the generation of stably resistant clones in three ccRCC cell lines (786-O, A498 and Caki-1), we identified non-overlapping miRNA:target gene networks, suggesting divergent mechanisms of sunitinib resistance. Surprisingly, even though the genes involved in these networks were different, they shared targeting by multiple members of the miR-17~92 cluster. In 786-O cells, targeted genes were related to hypoxia/angiogenic pathways, whereas, in Caki-1 cells, they were related to inflammatory/proliferation pathways. The immunotherapy target PD-L1 was consistently up-regulated in resistant cells, and we demonstrated that the silencing of this gene resulted in an increase in sensitivity to sunitinib treatment only in 786-O-resistant cells, suggesting that some ccRCC patients might benefit from combination therapy with PD-L1 checkpoint inhibitors. In summary, we demonstrate that, although there are clearly divergent mechanisms of sunitinib resistance in ccRCC subtypes, the commonality of miRNAs in multiple pathways could be targeted to overcome sunitinib resistance.
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3
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Lawrie CH, Armesto M, Fernandez-Mercado M, Arestín M, Manterola L, Goicoechea I, Larrea E, Caffarel MM, Araujo AM, Sole C, Sperga M, Alvarado-Cabrero I, Michal M, Hes O, López JI. Noncoding RNA Expression and Targeted Next-Generation Sequencing Distinguish Tubulocystic Renal Cell Carcinoma (TC-RCC) from Other Renal Neoplasms. J Mol Diagn 2018; 20:34-45. [PMID: 29056573 DOI: 10.1016/j.jmoldx.2017.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 08/29/2017] [Accepted: 09/13/2017] [Indexed: 01/23/2023] Open
Abstract
Tubulocystic renal cell carcinoma (TC-RCC) is a rare recently described renal neoplasm characterized by gross, microscopic, and immunohistochemical differences from other renal tumor types and was recently classified as a distinct entity. However, this distinction remains controversial particularly because some genetic studies suggest a close relationship with papillary RCC (PRCC). The molecular basis of this disease remains largely unexplored. We therefore performed noncoding (nc) RNA/miRNA expression analysis and targeted next-generation sequencing mutational profiling on 13 TC-RCC cases (11 pure, two mixed TC-RCC/PRCC) and compared with other renal neoplasms. The expression profile of miRNAs and other ncRNAs in TC-RCC was distinct and validated 10 differentially expressed miRNAs by quantitative RT-PCR, including miR-155 and miR-34a, that were significantly down-regulated compared with PRCC cases (n = 22). With the use of targeted next-generation sequencing we identified mutations in 14 different genes, most frequently (>60% of TC-RCC cases) in ABL1 and PDFGRA genes. These mutations were present in <5% of clear cell RCC, PRCC, or chromophobe RCC cases (n > 600) of The Cancer Genome Atlas database. In summary, this study is by far the largest molecular study of TC-RCC cases and the first to investigate either ncRNA expression or their genomic profile. These results add molecular evidence that TC-RCC is indeed a distinct entity from PRCC and other renal neoplasms.
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Affiliation(s)
- Charles H Lawrie
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain; Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom.
| | - María Armesto
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain
| | | | - María Arestín
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain
| | - Lorea Manterola
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain
| | - Ibai Goicoechea
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain
| | - Erika Larrea
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain
| | - María M Caffarel
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Angela M Araujo
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain
| | - Carla Sole
- Molecular Oncology Group of Biodonostia Research Institute, San Sebastian, Spain
| | - Maris Sperga
- Department of Pathology, Riga Stradins University, Riga, Latvia
| | | | - Michal Michal
- Department of Pathology, Charles University Hospital, Plzen, Czech Republic
| | - Ondrej Hes
- Department of Pathology, Charles University Hospital, Plzen, Czech Republic
| | - José I López
- Department of Pathology, Cruces University Hospital, University of the Basque Country, Barakaldo, Bizkaia, Spain; BioCruces Research Institute, Barakaldo, Bizkaia, Spain
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4
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Mikami S, Oya M, Mizuno R, Kosaka T, Ishida M, Kuroda N, Nagashima Y, Katsube KI, Okada Y. Recent advances in renal cell carcinoma from a pathological point of view. Pathol Int 2016; 66:481-90. [PMID: 27461942 DOI: 10.1111/pin.12433] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 06/09/2016] [Accepted: 06/16/2016] [Indexed: 12/20/2022]
Abstract
The purpose of this article is to review the recent advances in renal cell carcinoma (RCC) from a pathological point of view. Because the genetic features and morphological characteristics have become major criteria for the classification of RCC, special techniques, such as immunohistochemistry, are essential to the differential diagnosis of renal tumors. Metastasis is frequently observed among the RCC patients with curative nephrectomy, and extracellular matrix-degrading enzymes, such as matrix metalloproteinases (MMP) and heparanase, play a key role in invasion and metastasis of RCC. Snail and Slug, transcription factors of epithelial-mesenchymal transition (EMT), accelerate cancer cell invasion through downregulation of E-cadherin and up-regulation of MMP. Therapies targeted at the vascular endothelial growth factor pathway have become the standard treatment of metastatic RCC. Although they lead to tumor shrinkage mainly by inhibiting angiogenesis, they have typically been associated with drug resistance. The mechanism of the resistance remains largely unknown, but complex events including re-activation of angiogenesis, EMT and cancer stem cells, and immune escape are implicated in the refractory response to the therapy. Recent advances of the research on RCC have caused the changes of classification and therapy, and pathologists should take overall view of these as integrated pathology.
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Affiliation(s)
- Shuji Mikami
- Division of Diagnostic Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Mototsugu Oya
- Department of Urology, Keio University School of Medicine, Tokyo, Japan
| | - Ryuichi Mizuno
- Department of Urology, Keio University School of Medicine, Tokyo, Japan
| | - Takeo Kosaka
- Department of Urology, Keio University School of Medicine, Tokyo, Japan
| | - Masaru Ishida
- Department of Urology, Keio University School of Medicine, Tokyo, Japan.,Department of Urology, Saiseikai Tobu Hospital, Yokohama, Japan
| | - Naoto Kuroda
- Department of Diagnostic Pathology, Kochi Red Cross Hospital, Kochi, Japan
| | - Yoji Nagashima
- Department of Surgical Pathology, Tokyo Women's Medical University, Tokyo, Japan
| | | | - Yasunori Okada
- Department of Pathophysiology for Locomotive and Neoplastic Diseases, Juntendo University Graduate School of Medicine Tokyo, Japan
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5
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Raimondo F, Corbetta S, Savoia A, Chinello C, Cazzaniga M, Rocco F, Bosari S, Grasso M, Bovo G, Magni F, Pitto M. Comparative membrane proteomics: a technical advancement in the search of renal cell carcinoma biomarkers. MOLECULAR BIOSYSTEMS 2015; 11:1708-16. [DOI: 10.1039/c5mb00020c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Set-up of a specific protocol for membrane protein analysis, applied to label free, comparative proteomics of renal cell carcinoma microdomains.
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Affiliation(s)
| | | | - Andrea Savoia
- Department of Health Sciences
- Univ. of Milano-Bicocca
- Monza
- Italy
| | - Clizia Chinello
- Department of Health Sciences
- Univ. of Milano-Bicocca
- Monza
- Italy
| | - Marta Cazzaniga
- Department of Health Sciences
- Univ. of Milano-Bicocca
- Monza
- Italy
| | - Francesco Rocco
- Department of Specialistic Surgical Sciences
- Urology unit
- Ospedale Maggiore Policlinico Foundation
- IRCCS
- Milano
| | - Silvano Bosari
- Department of Medicine
- Surgery and Dental Sciences
- Pathology Unit
- Ospedale Maggiore Policlinico Foundation Milano
- IRCCS
| | - Marco Grasso
- Department of Surgical Pathology
- Cytology
- Medical Genetics and Nephropathology
- Azienda Ospedaliera San Gerardo
- Monza
| | - Giorgio Bovo
- Department of Surgical Pathology
- Cytology
- Medical Genetics and Nephropathology
- Azienda Ospedaliera San Gerardo
- Monza
| | - Fulvio Magni
- Department of Health Sciences
- Univ. of Milano-Bicocca
- Monza
- Italy
| | - Marina Pitto
- Department of Health Sciences
- Univ. of Milano-Bicocca
- Monza
- Italy
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6
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Lawrie CH, Larrea E, Larrinaga G, Goicoechea I, Arestin M, Fernandez-Mercado M, Hes O, Cáceres F, Manterola L, López JI. Targeted next-generation sequencing and non-coding RNA expression analysis of clear cell papillary renal cell carcinoma suggests distinct pathological mechanisms from other renal tumour subtypes. J Pathol 2013; 232:32-42. [DOI: 10.1002/path.4296] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 09/23/2013] [Accepted: 10/15/2013] [Indexed: 12/15/2022]
Affiliation(s)
- Charles H Lawrie
- Oncology Area; Biodonostia Research Institute; San Sebastian Spain
- Nuffield Department of Clinical Laboratory Sciences; University of Oxford; UK
- IKERBASQUE; Basque Foundation for Science; Bilbao Spain
| | - Erika Larrea
- Oncology Area; Biodonostia Research Institute; San Sebastian Spain
| | - Gorka Larrinaga
- Nursing School; University of the Basque Country (UPV/EHU); Leioa Bizkaia Spain
| | - Ibai Goicoechea
- Oncology Area; Biodonostia Research Institute; San Sebastian Spain
| | - María Arestin
- Oncology Area; Biodonostia Research Institute; San Sebastian Spain
| | | | - Ondrej Hes
- Department of Pathology; Charles University Hospital; Plzen Czech Republic
| | - Francisco Cáceres
- Department of Urology; Cruces University Hospital; Barakaldo Bizkaia Spain
| | - Lorea Manterola
- Oncology Area; Biodonostia Research Institute; San Sebastian Spain
| | - José I López
- Department of Pathology, Cruces University Hospital, BioCruces Research Institute; University of the Basque Country (UPV/EHU); Barakaldo Bizkaia Spain
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7
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Kuroda N, Tanaka A. Recent classification of renal epithelial tumors. Med Mol Morphol 2013; 47:68-75. [PMID: 23529139 DOI: 10.1007/s00795-013-0033-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Accepted: 01/17/2013] [Indexed: 12/17/2022]
Abstract
The recent classification of renal tumors is based on genetic evidence as well as on histologic features. Malignant tumor includes clear cell renal carcinoma (RCC), multilocular cystic RCC, papillary RCC, chromophobe RCC, carcinoma of the collecting duct of Bellini, renal carcinoma associated with Xp11.2 translocations/TFE3 gene fusions and mucinous tubular and spindle cell carcinoma. Benign tumor is subdivided into papillary adenoma, renal oncocytoma and metanephric adenoma. Recently, new disease entities such as acquired cystic disease-associated RCC, clear cell papillary RCC and renal carcinoma with t(6;11)(p21:q12) have been discovered. In this article, we briefly review and introduce the clinical, morphological and genetic features of these tumor entities.
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Affiliation(s)
- Naoto Kuroda
- Department of Pathology, Kochi Red Cross Hospital, 2-13-51 Shin-honmachi, Kochi City, Kochi, 780-8561, Japan,
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8
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Raimondo F, Morosi L, Corbetta S, Chinello C, Brambilla P, Della Mina P, Villa A, Albo G, Battaglia C, Bosari S, Magni F, Pitto M. Differential protein profiling of renal cell carcinoma urinary exosomes. MOLECULAR BIOSYSTEMS 2013; 9:1220-33. [PMID: 23511837 DOI: 10.1039/c3mb25582d] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Renal cell carcinoma (RCC) accounts for about 3% of all human malignancies and its incidence is increasing. There are no standard biomarkers currently used in the clinical management of patients with renal cell carcinoma. A promising strategy for new biomarker detection is comparative proteomics of urinary exosomes (UE), nanovesicles released by every epithelial cell facing the urinary space, enriched in renal proteins and excluding high-abundance plasmatic proteins, such as albumin. Aim of the work is to establish the protein profile of exosomes isolated from urines of RCC patient compared with control subjects. We enrolled 29 clear cell RCC patients and 23 control healthy subjects (CTRL), age and sex-matched, for urine collection and vesicle isolation by differential centrifugation. Such vesicles were morphologically and biochemically characterized and proved to share exosome properties. Proteomic analysis, performed on 9 urinary exosome (UE) pooled samples by gel based digestion followed by LC-MS/MS, led to the identification of 261 proteins from CTRL subject UE and 186 from RCC patient UE, and demonstrated that most of the identified proteins are membrane associated or cytoplasmic. Moreover, about a half of identified proteins are not shared between RCC and control UE. Starting from these observations, and from the literature, we selected a panel of 10 proteins, whose UE differential content was subjected to immunoblotting validation. Results show for the first time that RCC UE protein content is substantially and reproducibly different from control UE, and that these differences may provide clues for new RCC biomarker discovery.
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Affiliation(s)
- F Raimondo
- Department of Health Sciences, Univ. of Milano-Bicocca, Via Cadore 48, 20900 Monza, Italy
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9
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Nagashima Y. Editorial comment to role of mammalian target of rapamycin inhibitor in the treatment of metastatic epithelioid angiomyolipoma: a case report. Int J Urol 2013; 20:942. [PMID: 23379352 DOI: 10.1111/iju.12116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Yang H, Zhao K, Yu Q, Wang X, Song Y, Li R. Evaluation of plasma and tissue S100A4 protein and mRNA levels as potential markers of metastasis and prognosis in clear cell renal cell carcinoma. J Int Med Res 2012; 40:475-85. [PMID: 22613408 DOI: 10.1177/147323001204000209] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES To investigate levels of S100A4 protein in plasma and S100A4 mRNA in tumours from patients with clear cell renal cell carcinoma (CCRCC), and correlate these with metastasis, survival and levels of vascular endothelial growth factor (VEGF). METHODS Plasma S100A4 and VEGF protein concentrations were measured using enzyme-linked immuno sorbent assays in 39 healthy subjects and 68 consecutive patients with untreated CCRCC. Levels of S100A4 and VEGF mRNA in tumour and matched control (healthy) tissue samples were measured using realtime quantitative reverse transcription- polymerase chain reaction. Findings were analysed with respect to clinico pathological characteristics. RESULTS Plasma VEGF concentrations were higher in patients with CCRCC than in healthy subjects. S100A4 and VEGF mRNA levels were up-regulated in CCRCC tumour tissue compared with control tissue samples. Logistic regression analysis revealed that up-regulated tumour S100A4 and VEGF mRNA levels were independent risk factors for the presence of invasion and/or metastasis. CONCLUSIONS S100A4 and VEGF are associated with tumour invasion and metastasis, and may be useful prognostic markers in patients with CCRCC. S100A4 and VEGF may represent potential targets for therapeutic intervention.
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Affiliation(s)
- H Yang
- Department of Nephrology, The Second Hospital of Tianjin Medical University, Tianjin, China
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11
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Raimondo F, Salemi C, Chinello C, Fumagalli D, Morosi L, Rocco F, Ferrero S, Perego R, Bianchi C, Sarto C, Pitto M, Brambilla P, Magni F. Proteomic analysis in clear cell renal cell carcinoma: identification of differentially expressed protein by 2-D DIGE. MOLECULAR BIOSYSTEMS 2012; 8:1040-51. [PMID: 22315040 DOI: 10.1039/c2mb05390j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Renal cell carcinoma (RCC), the most common neoplasm affecting the adult kidney, is characterised by heterogeneity of histological subtypes, drug resistance, and absence of molecular markers. Two-dimensional difference gel electrophoresis (2-D DIGE) technology in combination with mass spectrometry (MS) was applied to detect differentially expressed proteins in 20 pairs of RCC tissues and matched adjacent normal kidney cortex (ANK), in order to search for RCC markers. After gel analysis by DeCyder 6.5 and EDA software, differentially expressed protein spots were excised from Deep Purple stained preparative 2DE gel. A total of 100 proteins were identified by MS out of 2500 spots, 23 and 77 of these were, respectively, over- and down-expressed in RCC. The Principal Component Analysis applied to gels and protein spots exactly separated the two sample classes in two groups: RCC and ANK. Moreover, some spots, including ANXA2, PPIA, FABP7 and LEG1, resulted highly differential. The DIGE data were also confirmed by immunoblotting analysis for these proteins. In conclusion, we suggest that applying 2-D DIGE to RCC may provide the basis for a better molecular characterization and for the discovery of candidate biomarkers.
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Affiliation(s)
- Francesca Raimondo
- Department of Experimental Medicine, Univ. of Milano-Bicocca, Via Cadore 48, 20052 Monza, Italy
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12
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Rajandram R, Bennett N, Morais C, Johnson D, Gobe G. Renal cell carcinoma: Resistance to therapy, role of apoptosis, and the prognostic and therapeutic target potential of TRAF proteins. Med Hypotheses 2012; 78:330-6. [DOI: 10.1016/j.mehy.2011.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 10/17/2011] [Accepted: 11/13/2011] [Indexed: 12/25/2022]
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13
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Raimondo F, Morosi L, Chinello C, Perego R, Bianchi C, Albo G, Ferrero S, Rocco F, Magni F, Pitto M. Protein profiling of microdomains purified from renal cell carcinoma and normal kidney tissue samples. ACTA ACUST UNITED AC 2012; 8:1007-16. [DOI: 10.1039/c2mb05372a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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14
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Kobayashi N, Suzuki K, Murakami H, Kagawa E, Aoki I, Nagashima Y. Chromophobe Renal Cell Carcinoma with Sarcomatoid Transformation in a Dog. J Vet Diagn Invest 2010; 22:983-7. [DOI: 10.1177/104063871002200624] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A 12-year-old spayed female Siberian husky dog presented with hematuria and weight loss. An abdominal ultrasonographic examination revealed a left renal tumor measuring 8 cm in diameter, and a nephrectomy was performed. The resected kidney contained a cavitated tumor with a white solid region. Histologically, this tumor was composed of large polygonal cells with abundant and cloudy cytoplasm and focal sarcomatoid change. The neoplastic epithelial cells were reactive with colloidal iron staining; Dolichos biflorus agglutinin, peanut agglutinin, and Ulex europaeus agglutinin I lectins; and cluster of differentiation 10 and c-KIT antigens but not for periodic acid-Schiff or vimentin stain. Neoplastic sarcomatoid cells stained positive for vimentin. Because these histopathologic features are identical to those of human chromophobe renal cell carcinoma, the present case was diagnosed as canine chromophobe renal cell carcinoma.
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Affiliation(s)
- Naohito Kobayashi
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Kazuhiko Suzuki
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan
| | - Hironobu Murakami
- Department of Veterinary Epizootiology, College of Bioresource Science, Nihon University, Kanagawa, Japan
| | - Eriko Kagawa
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Itirou Aoki
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yoji Nagashima
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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15
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Fridman E, Dotan Z, Barshack I, David MB, Dov A, Tabak S, Zion O, Benjamin S, Benjamin H, Kuker H, Avivi C, Rosenblatt K, Polak-Charcon S, Ramon J, Rosenfeld N, Spector Y. Accurate molecular classification of renal tumors using microRNA expression. J Mol Diagn 2010; 12:687-96. [PMID: 20595629 PMCID: PMC2928434 DOI: 10.2353/jmoldx.2010.090187] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2010] [Indexed: 11/20/2022] Open
Abstract
Subtypes of renal tumors have different genetic backgrounds, prognoses, and responses to surgical and medical treatment, and their differential diagnosis is a frequent challenge for pathologists. New biomarkers can help improve the diagnosis and hence the management of renal cancer patients. We extracted RNA from 71 formalin-fixed paraffin-embedded (FFPE) renal tumor samples and measured expression of more than 900 microRNAs using custom microarrays. Clustering revealed similarity in microRNA expression between oncocytoma and chromophobe subtypes as well as between conventional (clear-cell) and papillary tumors. By basing a classification algorithm on this structure, we followed inherent biological correlations and could achieve accurate classification using few microRNAs markers. We defined a two-step decision-tree classifier that uses expression levels of six microRNAs: the first step uses expression levels of hsa-miR-210 and hsa-miR-221 to distinguish between the two pairs of subtypes; the second step uses either hsa-miR-200c with hsa-miR-139-5p to identify oncocytoma from chromophobe, or hsa-miR-31 with hsa-miR-126 to identify conventional from papillary tumors. The classifier was tested on an independent set of FFPE tumor samples from 54 additional patients, and identified correctly 93% of the cases. Validation on qRT-PCR platform demonstrated high correlation with microarray results and accurate classification. MicroRNA expression profiling is a very effective molecular bioassay for classification of renal tumors and can offer a quantitative standardized complement to current methods of tumor classification.
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Affiliation(s)
- Eddie Fridman
- Department of Pathology, Sheba Medical Center, Ramat-Gan
- Sackler School of Medicine, Tel Aviv University, Tel Aviv
| | - Zohar Dotan
- Department of Urology, Sheba Medical Center, Ramat-Gan
- Sackler School of Medicine, Tel Aviv University, Tel Aviv
| | - Iris Barshack
- Department of Pathology, Sheba Medical Center, Ramat-Gan
- Sackler School of Medicine, Tel Aviv University, Tel Aviv
| | | | | | | | - Orit Zion
- Rosetta Genomics Ltd., Rehovot, Israel
| | | | | | - Hagit Kuker
- Department of Pathology, Sheba Medical Center, Ramat-Gan
| | - Camila Avivi
- Department of Pathology, Sheba Medical Center, Ramat-Gan
| | | | - Sylvie Polak-Charcon
- Department of Pathology, Sheba Medical Center, Ramat-Gan
- Sackler School of Medicine, Tel Aviv University, Tel Aviv
| | - Jacob Ramon
- Department of Urology, Sheba Medical Center, Ramat-Gan
- Sackler School of Medicine, Tel Aviv University, Tel Aviv
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16
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L’adénome métanéphrique bilatéral du rein. AFRICAN JOURNAL OF UROLOGY 2009. [DOI: 10.1007/s12301-009-0017-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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17
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Kato I, Inayama Y, Yamanaka S, Ohshiro H, Gomi K, Shirai S, Aoki I, Uemura H, Miyoshi Y, Kubota Y, Yao M, Nagashima Y. Epithelioid angiomyolipoma of the kidney. Pathol Int 2009; 59:38-43. [PMID: 19121090 DOI: 10.1111/j.1440-1827.2008.02322.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Epithelioid angiomyolipoma (eAMLoma) is an uncommon renal mesenchymal tumor with malignant potential and is frequently associated with tuberous sclerosis (TSC). It is composed of polygonal large-sized tumor cells arranged in an epithelioid manner. Differential diagnosis from renal cell carcinoma (RCC) is often challenging because of its epithelioid morphology. Herein is reported three cases of eAMLoma, involving one in a 28-year-old man with TSC and two in women without TSC (34 and 62 years of age, respectively). The male TSC patient had microscopic conventional AMLomas in the same kidney. All patients were positive for melanoma (reactive with HMB45 antibody, and positive for melan A, tyrosinase and microphthalmia transcription factor) and smooth muscle markers (positive for alpha-smooth muscle-specific actin), but not for epithelial markers (cytokeratin, epithelial membrane antigen). In particular, the translocation RCC is an important differential diagnostic candidate, in terms of the positive reaction with HMB45 and morphological similarity. The present tumor samples did not show any reactivity for transcription factor binding to IGHM enhancer 3 or transcription factor EB, which excluded the possibility of translocation RCC. The possibility of eAMLoma should be evaluated as a diagnostic candidate, especially in cases of renal tumors (i) in young patients; (ii) associated with TSC; or (iii) with an epithelioid morphology and a high nuclear grade.
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Affiliation(s)
- Ikuma Kato
- Division of Anatomical and Surgical Pathology, Yokohama City University Hospital, Yokohama, Japan
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18
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Kobayashi N, Suzuki K, Shibuya H, Sato T, Aoki I, Nagashima Y. Renal Collecting Duct Carcinoma in a Dog. Vet Pathol 2008; 45:489-94. [DOI: 10.1354/vp.45-4-489] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
An 8-year-old, male, mongrel dog developed severe cough and anorexia and died within 3 months. Autopsy revealed an invasive grayish-white mass in the right kidney and multiple nodules in the lungs, thoracic wall, and spleen. Histologically, the renal mass and the other nodules were mainly composed of papillotubular structures lined by oval-to-polygonal pleomorphic cells. The cells were reactive with DBA, PNA, and UEA-1 lectins and positive for vimentin but negative for CD10 and high molecular weight cytokeratin. Because of its histological, histochemical, and immunohistochemical similarities with human collecting duct carcinoma (CDC), a diagnosis of renal collecting duct carcinoma with pulmonary, thoracic, and splenic metastases was established. To our knowledge, this is the first case report of CDC in animals.
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Affiliation(s)
- N. Kobayashi
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - K. Suzuki
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - H. Shibuya
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - T. Sato
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - I. Aoki
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y. Nagashima
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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19
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Sato H, Hagiwara H, Senba H, Fukumoto K, Nagashima Y, Yamasaki H, Ueno K, Yano T. The inhibitory effect of connexin 32 gene on metastasis in renal cell carcinoma. Mol Carcinog 2008; 47:403-9. [PMID: 18058801 DOI: 10.1002/mc.20396] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We have previously reported that connexin (Cx) 32 gene, a member of gap junctions, was specifically downregulated in human renal cell carcinoma (RCC) and it acts as a tumor suppressor against RCC. Because there is no standard therapy for advanced RCC, we investigated the anti-metastatic effect of Cx32 to seek a possibility of new RCC therapy. In this study, we used human metastatic RCC cell (Caki-1), and established Cx32-expressed cell clone (Caki-1T) or only mock-transfected cell clone (Caki-1W). For experimental production of metastases, the cells were injected into the lateral tail vein of SCID mice. Seventy days after inoculation, metastatic colonies were observed in Caki-1W inoculated group, though none of them were in Caki-1T inoculated group. The plasma VEGF concentration was significantly lower in Caki-1T group compared to Caki-1W group. To investigate where Cx32 effects on, we also tried in vitro analysis and found that the malignant phenotypes involving metastasis steps were significantly decreased in Caki-1T under hypoxia, a mimic condition of internal tumor environment. After hypoxia treatment, the protein level of HIF-2alpha, which plays main role for hypoxia adaptation, was observed to increase in Caki-1W, whereas no expression was observed in Caki-1T. We investigated the activation of Src, which is required for stabilization of HIF-2alpha, is suppressed in Caki-1T compared to Caki-1W. These results suggest that Cx32 inhibits hypoxia adaptation governed by HIF-2alpha, and this may help to reduce the metastasis of RCC cells.
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Affiliation(s)
- Hiromi Sato
- Project for Complementary Factors, National Institute of Health and Nutrition, Shinjuku-ku, Tokyo, Japan
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20
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Current insights in renal cell cancer pathology. Urol Oncol 2008; 26:225-38. [DOI: 10.1016/j.urolonc.2007.05.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2007] [Revised: 05/15/2007] [Accepted: 05/15/2007] [Indexed: 01/09/2023]
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21
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Dutta KK, Zhong Y, Liu YT, Yamada T, Akatsuka S, Hu Q, Yoshihara M, Ohara H, Takehashi M, Shinohara T, Masutani H, Onuki J, Toyokuni S. Association of microRNA-34a overexpression with proliferation is cell type-dependent. Cancer Sci 2007; 98:1845-52. [PMID: 17888029 DOI: 10.1111/j.1349-7006.2007.00619.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Recently Welch et al. reported that microRNA (miRNA)-34a functions as a potential tumor suppressor in neuroblastoma cells (Oncogene 26: 5017-22, 2007). Here, we conversely show that miRNA-34a supports cell proliferation in rat oxidative stress-induced renal carcinogenesis and is overexpressed in various types of human cancers. While searching for genetically unstable chromosomal areas in rat renal carcinogenesis, we found the miRNA-34 family reciprocally overexpressed in chromosomal areas with frequent allelic loss. By in situ hybridization and reverse transcription-polymerase chain reaction, cerebral neurons and Purkinje cells showed the highest expression of a major type, miRNA-34a, followed by a variety of endocrine cells and proliferating cells including germinal center lymphocytes and mouse embryonic fibroblasts and stem cells. In contrast, normal renal tubules, hepatocytes and myocardial cells showed faint expression. After 3 weeks of ferric nitrilotriacetate (Fe-NTA)-induced oxidative stress, regenerating renal proximal tubular cells showed high miRNA-34a expression. All of the Fe-NTA-induced rat renal carcinomas and an array of human cancers (151 positive cases of 177) showed high expression of miRNA-34a. Furthermore, knockdown of miRNA-34a with small interfering RNA significantly suppressed proliferation not only of renal carcinoma cells but also of HeLa and MCF7 cells. These results indicate that miRNA-34a overexpression, an acquired trait during carcinogenesis, supports cell proliferation in the majority of cancers suggesting an unexpected link in the cellular metabolism between cancer and neuronal and/or endocrine cells, which warrants further investigation.
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Affiliation(s)
- Khokon Kumar Dutta
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
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22
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Murakami T, Sano F, Huang Y, Komiya A, Baba M, Osada Y, Nagashima Y, Kondo K, Nakaigawa N, Miura T, Kubota Y, Yao M, Kishida T. Identification and characterization of Birt-Hogg-Dubé associated renal carcinoma. J Pathol 2007; 211:524-531. [PMID: 17323425 DOI: 10.1002/path.2139] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The Birt-Hogg-Dubé (BHD) gene is responsible for BHD syndrome, a rare autosomal dominant disease, characterized by benign hair follicle tumours, spontaneous pneumothorax and renal neoplasms with diverse histology. To elucidate its involvement in the development of renal neoplasms, we examined a total of 100 sporadic renal tumours with various histological subtypes for BHD mutation by SSCP-sequencing analyses. We found one germline insertion mutation in the C8 hotspot of exon 11 (c.1733insC), which is known to have a strong association with renal tumour occurrence. The germline-mutated patient suffered from solitary renal cell carcinoma (RCC) but did not have any other BHD manifestations or family history. The tumour revealed heterogeneous cytomorphology, mainly a mixture of eosinophilic and focally clear cells with tubulopapillary architecture. In this tumour, both BHD alleles were inactivated by germline mutation concomitant with loss of heterozygosity, and the amount of BHD mRNA detected by real-time quantitative PCR (RQ-PCR) was very low. Renal tumour subtype/nephron segment-specific gene expression detected by RQ-PCR demonstrated that the tumour expressed relatively high amounts of alpha-methylacyl-CoA racemase (AMACR) and the KIT oncogene, but relatively low amounts of carbonic anhydrase IX (CA9), aquaporin 1 (AQP1), claudin 7 (CLDN7), parvalbumin (PVALB), chloride channel Kb (CLCNKB) and 11-beta-hydroxysteroid dehydrogenase 2 (HSD11B2), suggesting diverse mRNA signatures. Further clustering analysis of 88 renal tumours based on expression of these eight genes sub-classified the tumour as close to oncocytomas and chromophobe RCCs, which are considered distal nephron-associated tumours. These data suggest that somatic mutation of BHD is relatively rare in Japanese patients. The BHD-mutated RCC identified in this study, which exhibits heterogeneous biological features in both morphology and gene expression signatures, seems to deviate from our current understanding of renal tumour classification.
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Affiliation(s)
- T Murakami
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - F Sano
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y Huang
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - A Komiya
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - M Baba
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y Osada
- Department of Urology, Kanagawa Cancer Centre, Yokohama, Japan
| | - Y Nagashima
- Department of Molecular Pathology and Oncology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - K Kondo
- Department of Urology, Yokohama City University Medical Centre, Yokohama, Japan
| | - N Nakaigawa
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - T Miura
- Department of Urology, Kanagawa Cancer Centre, Yokohama, Japan
| | - Y Kubota
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - M Yao
- Department of Urology and Molecular Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - T Kishida
- Department of Urology, Yokohama City University Medical Centre, Yokohama, Japan
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23
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Lerut E, Roskams T, Joniau S, Oyen R, Achten R, Van Poppel H, Debiec-Rychter M. Metanephric adenoma during pregnancy: clinical presentation, histology, and cytogenetics. Hum Pathol 2006; 37:1227-32. [PMID: 16938529 DOI: 10.1016/j.humpath.2006.03.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2006] [Accepted: 03/24/2006] [Indexed: 10/24/2022]
Abstract
Metanephric adenoma is a rare benign tumor of the kidney. It is considered to be derived from embryonic renal tissue and to be the benign counterpart of the Wilms tumor. Although its imaging findings and immunohistochemistry are nonspecific, it has a typical microscopic morphology. We describe a case of a 24-year-old primigravida who presented in the 28th week of pregnancy with lower back pain, fever, malaise, and anemia. At renal ultrasonography and magnetic resonance imaging, a hemorrhagic tumor of 10 cm in diameter originating from the right kidney was seen. Based on the imaging findings, the diagnosis of a cystic renal cell carcinoma with recent hemorrhage was suggested, and a radical nephrectomy was performed. Pathologic examination concluded to a metanephric adenoma. The further pregnancy went on well. The karyotype of the tumor was 46,XX,t(1;22)(q22;q13),t(15;16)(q21;p13). To our knowledge, this is the first report on these chromosomal abnormalities in metanephric adenoma.
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Affiliation(s)
- Evelyne Lerut
- Department of Morphology and Molecular Pathology, University Hospitals Leuven, B-3000 Leuven, Belgium.
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24
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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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25
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Kawano N, Inayama Y, Nakaigawa N, Yao M, Ogawa T, Aoki I, Kitamura H, Nakatani Y, Nagashima Y. Composite distal nephron-derived renal cell carcinoma with chromophobe and collecting duct carcinomatous elements. Pathol Int 2005; 55:360-5. [PMID: 15943794 DOI: 10.1111/j.1440-1827.2005.01837.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chromophobe renal cell carcinoma (RCC) and collecting duct carcinoma (CDC) are derived from the collecting duct epithelia, although their morphology, molecular biologic characteristics and clinical behaviors are quite different. Herein is presented a case of RCC possessing the chromophobe RCC and CDC elements occurring in a 64 year-old Japanese woman. The patient was referred to Yokohama City University Hospital with complaints of persistent back pain and fever. Radiologic examinations revealed a left renal tumor, and radical nephrectomy was performed. The patient died with multiple metastases, 8 months after the operation. The resected tumor showed an invasive growth, and its cut surface was heterogenous with hemorrhage and necrosis. Histologically, the tumor was composed of chromophobe elements with dedifferentiation, and CDC elements. The chromophobe and CDC elements had obvious histological transition. Lectin histochemistry and immunohistochemistry confirmed that this tumor was derived from the distal nephron. c-KIT, p53 and Ki67 antigen showed differential localization between the chromophobe and CDC elements, even in the transitional areas. Along with the previous reports, the present case seemed to be composite RCC derived from the collecting duct, which might present clues to elucidate carcinogenesis in the distal nephron.
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Affiliation(s)
- Naomi Kawano
- Division of Anatomical and Surgical Pathology, Yokohama City University Hospital, Yokohama, Japan
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