1
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Gerber TS, Ridder DA, Goeppert B, Brobeil A, Stenzel P, Zimmer S, Jäkel J, Metzig MO, Schwab R, Martin SZ, Kiss A, Bergmann F, Schirmacher P, Galle PR, Lang H, Roth W, Straub BK. N-cadherin: A diagnostic marker to help discriminate primary liver carcinomas from extrahepatic carcinomas. Int J Cancer 2024; 154:1857-1868. [PMID: 38212892 DOI: 10.1002/ijc.34836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 11/20/2023] [Accepted: 11/24/2023] [Indexed: 01/13/2024]
Abstract
Distinguishing primary liver cancer (PLC), namely hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (iCCA), from liver metastases is of crucial clinical importance. Histopathology remains the gold standard, but differential diagnosis may be challenging. While absent in most epithelial, the expression of the adherens junction glycoprotein N-cadherin is commonly restricted to neural and mesenchymal cells, or carcinoma cells that undergo the phenomenon of epithelial-to-mesenchymal transition (EMT). However, we recently established N- and E-cadherin expression as hallmarks of normal hepatocytes and cholangiocytes, which are also preserved in HCC and iCCA. Therefore, we hypothesized that E- and/or N-cadherin may distinguish between carcinoma derived from the liver vs carcinoma of other origins. We comprehensively evaluated E- and N-cadherin in 3359 different tumors in a multicenter study using immunohistochemistry and compared our results with previously published 882 cases of PLC, including 570 HCC and 312 iCCA. Most carcinomas showed strong positivity for E-cadherin. Strong N-cadherin positivity was present in HCC and iCCA. However, except for clear cell renal cell carcinoma (23.6% of cases) and thyroid cancer (29.2%), N-cadherin was only in some instances faintly expressed in adenocarcinomas of the gastrointestinal tract (0%-0.5%), lung (7.1%), pancreas (3.9%), gynecological organs (0%-7.4%), breast (2.2%) as well as in urothelial (9.4%) and squamous cell carcinoma (0%-5.6%). As expected, N-cadherin was detected in neuroendocrine tumors (25%-75%), malignant melanoma (46.2%) and malignant mesothelioma (41%). In conclusion, N-cadherin is a useful marker for the distinction of PLC vs liver metastases of extrahepatic carcinomas (P < .01).
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Affiliation(s)
- Tiemo S Gerber
- Institute of Pathology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Dirk A Ridder
- Institute of Pathology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Benjamin Goeppert
- Institute of Pathology and Neuropathology, RKH Klinikum Ludwigsburg, Ludwigsburg, Germany
- Institute of Tissue Medicine and Pathology, University of Bern, Bern, Switzerland
| | - Alexander Brobeil
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - Philipp Stenzel
- Institute of Pathology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Stefanie Zimmer
- Institute of Pathology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Jörg Jäkel
- Institute of Pathology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Marie Oliver Metzig
- Institute of Pathology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Roxana Schwab
- Department of Gynecology and Obstetrics, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Steve Z Martin
- Institute of Pathology, Charité-University Medicine, Berlin, Germany
| | - András Kiss
- 2nd Institute of Pathology, Semmelweis University, Budapest, Hungary
| | - Frank Bergmann
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - Peter Schirmacher
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - Peter R Galle
- 1st Department of Internal Medicine, Gastroenterology and Hepatology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Hauke Lang
- Department of General, Visceral and Transplant Surgery, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Wilfried Roth
- Institute of Pathology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
| | - Beate K Straub
- Institute of Pathology, University Medicine, Johannes Gutenberg-University, Mainz, Germany
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2
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Niewold TB, Aksentijevich I, Gorevic PD, Gibson G, Yao Q. Genetically transitional disease: conceptual understanding and applicability to rheumatic disease. Nat Rev Rheumatol 2024; 20:301-310. [PMID: 38418715 DOI: 10.1038/s41584-024-01086-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2024] [Indexed: 03/02/2024]
Abstract
In genomic medicine, the concept of genetically transitional disease (GTD) refers to cases in which gene mutation is necessary but not sufficient to cause disease. In this Perspective, we apply this novel concept to rheumatic diseases, which have been linked to hundreds of genetic variants via association studies. These variants are in the 'grey zone' between monogenic variants with large effect sizes and common susceptibility alleles with small effect sizes. Among genes associated with rare autoinflammatory diseases, many low-frequency and/or low-penetrance variants are known to increase susceptibility to systemic inflammation. In autoimmune diseases, hundreds of HLA and non-HLA genetic variants have been revealed to be modest- to moderate-risk alleles. These diseases can be reclassified as GTDs. The same concept could apply to many other human diseases. GTD could improve the reporting of genetic testing results, diagnostic yields, genetic counselling and selection of therapy, as well as facilitating research using a novel approach to human genetic diseases.
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Affiliation(s)
- Timothy B Niewold
- Department of Rheumatology, Hospital for Special Surgery, New York, NY, USA
| | - Ivona Aksentijevich
- Inflammatory Disease Section, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Peter D Gorevic
- Division of Rheumatology, Allergy and Immunology, Stony Brook University Renaissance School of Medicine, Stony Brook, NY, USA
| | - Greg Gibson
- Center for Integrative Genomics, School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Qingping Yao
- Division of Rheumatology, Allergy and Immunology, Stony Brook University Renaissance School of Medicine, Stony Brook, NY, USA.
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3
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Oladejo M, Nguyen HM, Wood L. CD105 in the progression and therapy of renal cell carcinoma. Cancer Lett 2023; 570:216327. [PMID: 37499740 DOI: 10.1016/j.canlet.2023.216327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/29/2023]
Abstract
Molecular biomarkers that interact with the vascular and immune compartments play an important role in the progression of solid malignancies. CD105, which is a component of the transforming growth factor beta (TGF β) signaling cascade, has long been studied for its role in potentiating angiogenesis in numerous cancers. In renal cell carcinoma (RCC), the role of CD105 is more complicated due to its diverse expression profile on the tumor cells, tumor vasculature, and the components of the immune system. Since its discovery, its angiogenic role has overshadowed other potential functions, especially in cancers. In this review, we aim to summarize the recent evidence and findings of the multifunctional roles of CD105 in angiogenesis and immunomodulation in the context of the various subtypes of RCC, with a specific emphasis on the clear cell RCC subtype. Since CD105 is an established biomarker and tumor antigen, we also provide an update on the preclinical and clinical applications of CD105 as a therapeutic platform in RCC.
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Affiliation(s)
- Mariam Oladejo
- Department of Immunotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, USA
| | - Hong-My Nguyen
- Department of Immunotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, USA
| | - Laurence Wood
- Department of Immunotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, USA.
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4
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Hypertension and renal disease programming: focus on the early postnatal period. Clin Sci (Lond) 2022; 136:1303-1339. [PMID: 36073779 DOI: 10.1042/cs20220293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/18/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022]
Abstract
The developmental origin of hypertension and renal disease is a concept highly supported by strong evidence coming from both human and animal studies. During development there are periods in which the organs are more vulnerable to stressors. Such periods of susceptibility are also called 'sensitive windows of exposure'. It was shown that as earlier an adverse event occurs; the greater are the consequences for health impairment. However, evidence show that the postnatal period is also quite important for hypertension and renal disease programming, especially in rodents because they complete nephrogenesis postnatally, and it is also important during preterm human birth. Considering that the developing kidney is vulnerable to early-life stressors, renal programming is a key element in the developmental programming of hypertension and renal disease. The purpose of this review is to highlight the great number of studies, most of them performed in animal models, showing the broad range of stressors involved in hypertension and renal disease programming, with a particular focus on the stressors that occur during the early postnatal period. These stressors mainly include undernutrition or specific nutritional deficits, chronic behavioral stress, exposure to environmental chemicals, and pharmacological treatments that affect some important factors involved in renal physiology. We also discuss the common molecular mechanisms that are activated by the mentioned stressors and that promote the appearance of these adult diseases, with a brief description on some reprogramming strategies, which is a relatively new and promising field to treat or to prevent these diseases.
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5
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Compound C Inhibits Renca Renal Epithelial Carcinoma Growth in Syngeneic Mouse Models by Blocking Cell Cycle Progression, Adhesion and Invasion. Int J Mol Sci 2022; 23:ijms23179675. [PMID: 36077072 PMCID: PMC9456023 DOI: 10.3390/ijms23179675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 11/17/2022] Open
Abstract
Compound C (CompC), an inhibitor of AMP-activated protein kinase, reduces the viability of various renal carcinoma cells. The molecular mechanism underlying anti-proliferative effect was investigated by flow cytometry and western blot analysis in Renca cells. Its effect on the growth of Renca xenografts was also examined in a syngeneic BALB/c mouse model. Subsequent results demonstrated that CompC reduced platelet-derived growth factor receptor signaling pathways and increased ERK1/2 activation as well as reactive oxygen species (ROS) production. CompC also increased the level of active Wee1 tyrosine kinase (P-Ser642-Wee1) and the inactive form of Cdk1 (P-Tyr15-Cdk1) while reducing the level of active histone H3 (P-Ser10-H3). ROS-dependent ERK1/2 activation and sequential alterations in Wee1, Cdk1, and histone H3 might be responsible for the CompC-induced G2/M cell cycle arrest and cell viability reduction. In addition, CompC reduced the adhesion, migration, and invasion of Renca cells in the in vitro cell systems, and growth of Renca xenografts in the BALB/c mouse model. Taken together, the inhibition of in vivo tumor growth by CompC may be attributed to the blockage of cell cycle progression, adhesion, migration, and invasion of tumor cells. These findings suggest the therapeutic potential of CompC against tumor development and progression.
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Osca-Verdegal R, Beltrán-García J, Górriz JL, Martínez Jabaloyas JM, Pallardó FV, García-Giménez JL. Use of Circular RNAs in Diagnosis, Prognosis and Therapeutics of Renal Cell Carcinoma. Front Cell Dev Biol 2022; 10:879814. [PMID: 35813211 PMCID: PMC9257016 DOI: 10.3389/fcell.2022.879814] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/31/2022] [Indexed: 12/12/2022] Open
Abstract
Renal cell carcinoma is the most common type of kidney cancer, representing 90% of kidney cancer diagnoses, and the deadliest urological cancer. While the incidence and mortality rates by renal cell carcinoma are higher in men compared to women, in both sexes the clinical characteristics are the same, and usually unspecific, thereby hindering and delaying the diagnostic process and increasing the metastatic potential. Regarding treatment, surgical resection remains the main therapeutic strategy. However, even after radical nephrectomy, metastasis may still occur in some patients, with most metastatic renal cell carcinomas being resistant to chemotherapy and radiotherapy. Therefore, the identification of new biomarkers to help clinicians in the early detection, and treatment of renal cell carcinoma is essential. In this review, we describe circRNAs related to renal cell carcinoma processes reported to date and propose the use of some in therapeutic strategies for renal cell carcinoma treatment.
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Affiliation(s)
- Rebeca Osca-Verdegal
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
| | - Jesús Beltrán-García
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
| | - José Luis Górriz
- Department of Nephrology, University Clinic Hospital, INCLIVA, University of Valencia, Valencia, Spain
| | | | - Federico V. Pallardó
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
| | - José Luis García-Giménez
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Institute of Health Carlos III, Valencia, Spain
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain
- INCLIVA Biomedical Research Institute, Valencia, Spain
- EpiDisease S.L. (Spin-Off CIBER-ISCIII), Parc Científic de la Universitat de València, Valencia, Spain
- *Correspondence: José Luis García-Giménez,
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Trevisani F, Floris M, Vago R, Minnei R, Cinque A. Long Non-Coding RNAs as Novel Biomarkers in the Clinical Management of Papillary Renal Cell Carcinoma Patients: A Promise or a Pledge? Cells 2022; 11:1658. [PMID: 35626699 PMCID: PMC9139553 DOI: 10.3390/cells11101658] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 12/22/2022] Open
Abstract
Papillary renal cell carcinoma (pRCC) represents the second most common subtype of renal cell carcinoma, following clear cell carcinoma and accounting for 10-15% of cases. For around 20 years, pRCCs have been classified according to their mere histopathologic appearance, unsupported by genetic and molecular evidence, with an unmet need for clinically relevant classification. Moreover, patients with non-clear cell renal cell carcinomas have been seldom included in large clinical trials; therefore, the therapeutic landscape is less defined than in the clear cell subtype. However, in the last decades, the evolving comprehension of pRCC molecular features has led to a growing use of target therapy and to better oncological outcomes. Nonetheless, a reliable molecular biomarker able to detect the aggressiveness of pRCC is not yet available in clinical practice. As a result, the pRCC correct prognosis remains cumbersome, and new biomarkers able to stratify patients upon risk of recurrence are strongly needed. Non-coding RNAs (ncRNAs) are functional elements which play critical roles in gene expression, at the epigenetic, transcriptional, and post-transcriptional levels. In the last decade, ncRNAs have gained importance as possible biomarkers for several types of diseases, especially in the cancer universe. In this review, we analyzed the role of long non-coding RNAs (lncRNAs) in the prognosis of pRCC, with a particular focus on their networking. In fact, in the competing endogenous RNA hypothesis, lncRNAs can bind miRNAs, resulting in the modulation of the mRNA levels targeted by the sponged miRNA, leading to additional regulation of the target gene expression and increasing complexity in the biological processes.
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Affiliation(s)
- Francesco Trevisani
- Urological Research Institute, San Raffaele Scientific Institute, 20132 Milano, Italy;
- Unit of Urology, San Raffaele Scientific Institute, 20132 Milano, Italy
- Biorek s.r.l., San Raffaele Scientific Institute, 20132 Milano, Italy;
| | - Matteo Floris
- Nephrology, Dialysis, and Transplantation Division, G. Brotzu Hospital, University of Cagliari, 09134 Cagliari, Italy; (M.F.); (R.M.)
| | - Riccardo Vago
- Urological Research Institute, San Raffaele Scientific Institute, 20132 Milano, Italy;
| | - Roberto Minnei
- Nephrology, Dialysis, and Transplantation Division, G. Brotzu Hospital, University of Cagliari, 09134 Cagliari, Italy; (M.F.); (R.M.)
| | - Alessandra Cinque
- Biorek s.r.l., San Raffaele Scientific Institute, 20132 Milano, Italy;
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8
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Jorge S, Capelo JL, LaFramboise W, Satturwar S, Korentzelos D, Bastacky S, Quiroga-Garza G, Dhir R, Wiśniewski JR, Lodeiro C, Santos HM. Absolute quantitative proteomics using the total protein approach to identify novel clinical immunohistochemical markers in renal neoplasms. BMC Med 2021; 19:196. [PMID: 34482820 PMCID: PMC8420025 DOI: 10.1186/s12916-021-02071-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/22/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Renal neoplasms encompass a variety of malignant and benign tumors, including many with shared characteristics. The diagnosis of these renal neoplasms remains challenging with currently available tools. In this work, we demonstrate the total protein approach (TPA) based on high-resolution mass spectrometry (MS) as a tool to improve the accuracy of renal neoplasm diagnosis. METHODS Frozen tissue biopsies of human renal tissues [clear cell renal cell carcinoma (n = 7), papillary renal cell carcinoma (n = 5), chromophobe renal cell carcinoma (n = 5), and renal oncocytoma (n = 5)] were collected for proteome analysis. Normal adjacent renal tissue (NAT, n = 5) was used as a control. Proteins were extracted and digested using trypsin, and the digested proteomes were analyzed by label-free high-resolution MS (nanoLC-ESI-HR-MS/MS). Quantitative analysis was performed by comparison between protein abundances of tumors and NAT specimens, and the label-free and standard-free TPA was used to obtain absolute protein concentrations. RESULTS A total of 205 differentially expressed proteins with the potential to distinguish the renal neoplasms were found. Of these proteins, a TPA-based panel of 24, including known and new biomarkers, was selected as the best candidates to differentiate the neoplasms. As proof of concept, the diagnostic potential of PLIN2, TUBB3, LAMP1, and HK1 was validated using semi-quantitative immunohistochemistry with a total of 128 samples assessed on tissue micro-arrays. CONCLUSIONS We demonstrate the utility of combining high-resolution MS and the TPA as potential new diagnostic tool in the pathology of renal neoplasms. A similar TPA approach may be implemented in any cancer study with solid biopsies.
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Affiliation(s)
- Susana Jorge
- BIOSCOPE Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
- PROTEOMASS Scientific Society, Madan Park, 2829-516, Caparica, Portugal
| | - José L Capelo
- BIOSCOPE Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
- PROTEOMASS Scientific Society, Madan Park, 2829-516, Caparica, Portugal
| | - William LaFramboise
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Swati Satturwar
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Dimitrios Korentzelos
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Sheldon Bastacky
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | | | - Rajiv Dhir
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Jacek R Wiśniewski
- Biochemical Proteomics Group, Department of Proteomics and Signal Transduction, Max-Planck-Institute of Biochemistry, Martinsried, Germany
| | - Carlos Lodeiro
- BIOSCOPE Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal
- PROTEOMASS Scientific Society, Madan Park, 2829-516, Caparica, Portugal
| | - Hugo M Santos
- BIOSCOPE Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
- PROTEOMASS Scientific Society, Madan Park, 2829-516, Caparica, Portugal.
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
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9
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Yu Z, Lu W, Su C, Lv Y, Ye Y, Guo B, Liu D, Yan H, Mi H, Li T, Zhang Q, Cheng J, Mo Z. Single-Cell RNA-seq Identification of the Cellular Molecular Characteristics of Sporadic Bilateral Clear Cell Renal Cell Carcinoma. Front Oncol 2021; 11:659251. [PMID: 34168986 PMCID: PMC8217644 DOI: 10.3389/fonc.2021.659251] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 04/29/2021] [Indexed: 12/20/2022] Open
Abstract
Bilateral renal cell carcinoma (RCC) is a rare disease that can be classified as either familial or sporadic. Studying the cellular molecular characteristics of sporadic bilateral RCC is important to provide guidance for clinical treatment. Cellular molecular characteristics can be expressed at the RNA level, especially at the single-cell degree. Single-cell RNA sequencing (scRNA-seq) was performed on bilateral clear cell RCC (ccRCC). A total of 3,575 and 3,568 high-quality single-cell transcriptome data were captured from the left and right tumour tissues, respectively. Gene characteristics were identified by comparing left and right tumours at the scRNA level. The complex cellular environment of bilateral ccRCC was presented by using scRNA-seq. Single-cell transcriptomic analysis revealed high similarity in gene expression among most of the cell types of bilateral RCCs but significant differences in gene expression among different site tumour cells. Additionally, the potential biological function of different tumour cell types was determined by gene ontology (GO) analysis. The transcriptome characteristics of tumour tissues in different locations at the single-cell transcriptome level were revealed through the scRNA-seq of bilateral sporadic ccRCC. This work provides new insights into the diagnosis and treatment of bilateral RCC.
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Affiliation(s)
- Zhenyuan Yu
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China
| | - Wenhao Lu
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China
| | - Cheng Su
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China
| | - Yufang Lv
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China
| | - Yu Ye
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China.,Scientific Research Department, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Bingqian Guo
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China
| | - Deyun Liu
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Haibiao Yan
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Hua Mi
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Tianyu Li
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Qingyun Zhang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China.,Department of Urology, Affiliated Tumour Hospital of Guangxi Medical University, Nanning, China
| | - Jiwen Cheng
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China
| | - Zengnan Mo
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, China
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10
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Zhao CL, Amin A, Hui Y, Yang D, Cao W. TGR5 expression in normal kidney and renal neoplasms. Diagn Pathol 2018; 13:22. [PMID: 29606134 PMCID: PMC5880016 DOI: 10.1186/s13000-018-0700-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 03/20/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The G protein-coupled bile acid receptor (TGR5) is a cell surface receptor which induces the production of intracellular cAMP and promotes epithelial-mesenchymal transition in gastric cancer cell lines. TGR5 is found in a wide variety of tissues including the kidney. However, the patterns of TGR5 expression have not been well characterized in physiologic kidney or renal neoplasms. We explore the expression of TGR5 in benign renal tissue and renal neoplasms and assess its utility as a diagnostic marker. METHODS Sixty-one renal cortical neoplasms from 2000 to 2014 were retrieved. TGR5 protein expression was examined by immunohistochemistry. TGR5 mRNA was also measured by real-time PCR. RESULTS In normal renal tissue, TGR5 was strongly positive in collecting ducts, distal convoluted tubules and thin loop of Henle. Proximal convoluted tubules showed absent or focal weak staining. In clear cell renal cell carcinomas (RCCs), 25 of 27 cases (92%) were negative for TGR5 (p < 0.001). TGR5 mRNA was also significantly decreased in clear cell RCCs, suggesting that decreased TGR5 protein expression may be attributable to the downregulation of TGR5 mRNA in these tumors. All 11 papillary RCCs expressed TGR5 with 45% (5/11) exhibiting moderate to strong staining. All chromophobe RCCs and oncocytomas were positive for TGR5 with weak to moderate staining. TGR5 mRNA expression in these tumors was similar to normal kidney. All urothelial carcinomas of the renal pelvis strongly expressed TGR5 including a poorly differentiated urothelial carcinoma with sarcomatoid features. CONCLUSION TGR5 is strongly expressed in collecting ducts, distal convoluted tubules and thin loop of Henle. TGR5 protein and mRNA expression were notably decreased in clear cell RCCs and may be helpful in differentiating these tumors from other RCCs.
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Affiliation(s)
- Chaohui Lisa Zhao
- Department of Pathology, Rhode Island Hospital and the Warren Alpert Medical School of Brown University, 593 Eddy Street, APC 12, Providence, RI, 02903, USA
| | - Ali Amin
- Department of Pathology, Rhode Island Hospital and the Warren Alpert Medical School of Brown University, 593 Eddy Street, APC 12, Providence, RI, 02903, USA
| | - Yiang Hui
- Department of Pathology, Rhode Island Hospital and the Warren Alpert Medical School of Brown University, 593 Eddy Street, APC 12, Providence, RI, 02903, USA
| | - Dongfang Yang
- Department of Pathology, Rhode Island Hospital and the Warren Alpert Medical School of Brown University, 593 Eddy Street, APC 12, Providence, RI, 02903, USA
| | - Weibiao Cao
- Department of Pathology, Rhode Island Hospital and the Warren Alpert Medical School of Brown University, 593 Eddy Street, APC 12, Providence, RI, 02903, USA. .,Department of Medicine, Rhode Island Hospital and the Warren Alpert Medical School of Brown University, Providence, RI, 02903, USA.
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11
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Avances en imágenes para la estadificación y seguimiento de pacientes con carcinoma de células renales. Rev Urol 2014. [DOI: 10.1016/s0120-789x(14)50057-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Dere R, Perkins AL, Bawa-Khalfe T, Jonasch D, Walker CL. β-catenin links von Hippel-Lindau to aurora kinase A and loss of primary cilia in renal cell carcinoma. J Am Soc Nephrol 2014; 26:553-64. [PMID: 25313256 DOI: 10.1681/asn.2013090984] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
von Hippel-Lindau (VHL) gene mutations are associated with clear cell renal cell carcinoma (ccRCC). A hallmark of ccRCC is loss of the primary cilium. Loss of this key organelle in ccRCC is caused by loss of VHL and associated with increased Aurora kinase A (AURKA) and histone deacetylase 6 (HDAC6) activities, which drive disassembly of the primary cilium. However, the underlying mechanism by which VHL loss increases AURKA levels has not been clearly elucidated, although it has been suggested that hypoxia-inducible factor-1α (HIF-1α) mediates increased AURKA expression in VHL-null cells. By contrast, we found that elevated AURKA expression is not increased by HIF-1α, suggesting an alternate mechanism for AURKA dysregulation in VHL-null cells. We report here that AURKA expression is driven by β-catenin transcription in VHL-null cells. In a panel of RCC cell lines, we observed nuclear accumulation of β-catenin and increased AURKA signaling to HDAC6. Moreover, HIF-1α inhibited AURKA expression by inhibiting β-catenin transcription. VHL knockdown activated β-catenin and elevated AURKA expression, decreased primary cilia formation, and caused significant shortening of cilia length in cells that did form cilia. The β-catenin responsive transcription inhibitor iCRT14 reduced AURKA levels and rescued ciliary defects, inducing a significant increase in primary cilia formation in VHL-deficient cells. These data define a role for β-catenin in regulating AURKA and formation of primary cilia in the setting of VHL deficiency, opening new avenues for treatment with β-catenin inhibitors to rescue ciliogenesis in ccRCC.
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Affiliation(s)
- Ruhee Dere
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas; and
| | - Ashley Lyn Perkins
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas; and
| | - Tasneem Bawa-Khalfe
- Department of Cardiology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Darius Jonasch
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas; and
| | - Cheryl Lyn Walker
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, Texas; and
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13
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Rinkevich Y, Montoro DT, Contreras-Trujillo H, Harari-Steinberg O, Newman AM, Tsai JM, Lim X, Van-Amerongen R, Bowman A, Januszyk M, Pleniceanu O, Nusse R, Longaker MT, Weissman IL, Dekel B. In vivo clonal analysis reveals lineage-restricted progenitor characteristics in mammalian kidney development, maintenance, and regeneration. Cell Rep 2014; 7:1270-83. [PMID: 24835991 DOI: 10.1016/j.celrep.2014.04.018] [Citation(s) in RCA: 162] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2013] [Revised: 03/02/2014] [Accepted: 04/09/2014] [Indexed: 12/18/2022] Open
Abstract
The mechanism and magnitude by which the mammalian kidney generates and maintains its proximal tubules, distal tubules, and collecting ducts remain controversial. Here, we use long-term in vivo genetic lineage tracing and clonal analysis of individual cells from kidneys undergoing development, maintenance, and regeneration. We show that the adult mammalian kidney undergoes continuous tubulogenesis via expansions of fate-restricted clones. Kidneys recovering from damage undergo tubulogenesis through expansions of clones with segment-specific borders, and renal spheres developing in vitro from individual cells maintain distinct, segment-specific fates. Analysis of mice derived by transfer of color-marked embryonic stem cells (ESCs) into uncolored blastocysts demonstrates that nephrons are polyclonal, developing from expansions of singly fated clones. Finally, we show that adult renal clones are derived from Wnt-responsive precursors, and their tracing in vivo generates tubules that are segment specific. Collectively, these analyses demonstrate that fate-restricted precursors functioning as unipotent progenitors continuously maintain and self-preserve the mouse kidney throughout life.
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Affiliation(s)
- Yuval Rinkevich
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Daniel T Montoro
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Humberto Contreras-Trujillo
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Orit Harari-Steinberg
- Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler School of Medicine, Tel Aviv University, Tel Aviv 52621, Israel
| | - Aaron M Newman
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jonathan M Tsai
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Xinhong Lim
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Renee Van-Amerongen
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Angela Bowman
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michael Januszyk
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Oren Pleniceanu
- Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler School of Medicine, Tel Aviv University, Tel Aviv 52621, Israel
| | - Roel Nusse
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Developmental Biology, Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michael T Longaker
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA; Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Irving L Weissman
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA; Ludwig Center for Cancer Stem Cell Research, Stanford University, Stanford, CA 94305, USA
| | - Benjamin Dekel
- Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler School of Medicine, Tel Aviv University, Tel Aviv 52621, Israel.
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14
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Renal cell carcinoma of the kidney with synchronous ipsilateral transitional cell carcinoma of the renal pelvis. Case Rep Urol 2013; 2013:194127. [PMID: 23936721 PMCID: PMC3713329 DOI: 10.1155/2013/194127] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 06/06/2013] [Indexed: 11/17/2022] Open
Abstract
A 73-year-old man was admitted to our clinic with flank pain and gross macroscopic hematuria. Radiologic examination revealed a solid mass in the left kidney and additionally another mass in the ureteropelvic junction of the same kidney with severe hydronephrosis. Left nephroureterectomy with bladder cuff removel was performed, and histopathological evolution showed a Fuhrman grade 3 clear cell type RCC with low-grade TCC of the pelvis.
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15
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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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16
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Azeem K, Kollarova H, Horakova D, Magnuskova S, Janout V. Genetic syndromes associated with renal cell carcinoma: a review. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2012; 155:231-8. [PMID: 22286808 DOI: 10.5507/bp.2011.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
AIMS A review of recent knowledge on heredital syndromes related to renal cell carcinoma. METHODS Aim of this review was to summarize the recent knowledge of genetic syndromes associated with renal cell carcinoma. RESULTS Summary of incidence and factors modulating risk of hereditary renal cell carcinoma development. CONCLUSIONS Hereditary forms of RCC are relatively rare. Their study is beneficial in many ways. In individuals at a higher risk of a hereditary syndrome, the knowledge of hereditary forms may help to significantly decrease the impact of the hereditary disease. In the general population, knowledge acquired by the study of hereditary forms of RCC may in the future contribute to both diagnosis and treatment of sporadic tumours.
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Affiliation(s)
- Katerina Azeem
- Department of Preventive Medicine, Palacky University Olomouc, Czech Republic.
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17
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van Bemmel DM, Boffetta P, Liao LM, Berndt SI, Menashe I, Yeager M, Chanock S, Karami S, Zaridze D, Matteev V, Janout V, Kollarova H, Bencko V, Navratilova M, Szeszenia-Dabrowska N, Mates D, Slamova A, Rothman N, Han SS, Rosenberg PS, Brennan P, Chow WH, Moore LE. Comprehensive analysis of 5-aminolevulinic acid dehydrogenase (ALAD) variants and renal cell carcinoma risk among individuals exposed to lead. PLoS One 2011; 6:e20432. [PMID: 21799727 PMCID: PMC3140467 DOI: 10.1371/journal.pone.0020432] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Accepted: 05/02/2011] [Indexed: 11/19/2022] Open
Abstract
Background Epidemiologic studies are reporting associations between lead exposure and human cancers. A polymorphism in the 5-aminolevulinic acid dehydratase (ALAD) gene affects lead toxicokinetics and may modify the adverse effects of lead. Methods The objective of this study was to evaluate single-nucleotide polymorphisms (SNPs) tagging the ALAD region among renal cancer cases and controls to determine whether genetic variation alters the relationship between lead and renal cancer. Occupational exposure to lead and risk of cancer was examined in a case-control study of renal cell carcinoma (RCC). Comprehensive analysis of variation across the ALAD gene was assessed using a tagging SNP approach among 987 cases and 1298 controls. Occupational lead exposure was estimated using questionnaire-based exposure assessment and expert review. Odds ratios (OR) and 95% confidence intervals (CI) were calculated using logistic regression. Results The adjusted risk associated with the ALAD variant rs8177796CT/TT was increased (OR = 1.35, 95%CI = 1.05–1.73, p-value = 0.02) when compared to the major allele, regardless of lead exposure. Joint effects of lead and ALAD rs2761016 suggest an increased RCC risk for the homozygous wild-type and heterozygous alleles (GGOR = 2.68, 95%CI = 1.17–6.12, p = 0.01; GAOR = 1.79, 95%CI = 1.06–3.04 with an interaction approaching significance (pint = 0.06).. No significant modification in RCC risk was observed for the functional variant rs1800435(K68N). Haplotype analysis identified a region associated with risk supporting tagging SNP results. Conclusion A common genetic variation in ALAD may alter the risk of RCC overall, and among individuals occupationally exposed to lead. Further work in larger exposed populations is warranted to determine if ALAD modifies RCC risk associated with lead exposure.
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Affiliation(s)
- Dana M van Bemmel
- Cancer Prevention Fellowship Program, Office of the Director, National Cancer Institute, Bethesda, Maryland, United States of America.
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Abstract
Renal cell carcinoma (RCC), the most lethal type of genitourinary cancer, is generally resistant to chemotherapy and radiation therapy. Surgical excision of the tumor at a localized stage remains the mainstay for curative therapy. A number of drugs developed in recent years have shown limited to significant efficacy in treating RCC. These drugs act by blocking critical signaling pathways associated with RCC tumor growth and survival, and angiogenesis. Beyond well-validated signaling targets such as VHL, VEGFR and mTOR, additional pathways including HGF/c-MET and Wnt/β-catenin have emerged as important to RCC pathogenesis. Mutations in one or more components of these signaling networks may affect tumor response to therapy. This review summarizes the state of knowledge about signaling pathways in RCC and discusses the known genetic and epigenetic alterations that underlie dysregulation of these pathways.
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Aberrant epithelial morphology and persistent epidermal growth factor receptor signaling in a mouse model of renal carcinoma. Proc Natl Acad Sci U S A 2009; 106:9767-72. [PMID: 19487675 DOI: 10.1073/pnas.0902031106] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The epidermal growth factor receptor (EGFR) has frequently been implicated in hyperproliferative diseases of renal tubule epithelia. We have shown that the NF2 tumor suppressor Merlin inhibits EGFR internalization and signaling in a cell contact-dependent manner. Interestingly, despite the paucity of recurring mutations in human renal cell carcinoma (RCC), homozygous mutation of the NF2 gene is found in approximately 2% of RCC patient samples in the Sanger COSMIC database. To examine the roles of Merlin and EGFR in kidney tumorigenesis, we generated mice with a targeted deletion of Nf2 in the proximal convoluted epithelium using a Villin-Cre transgene. All of these mice developed intratubular neoplasia by 3 months, which progressed to invasive carcinoma by 6-10 months. Kidneys from these mice demonstrated marked hyperproliferation and a concomitant increase in label-retaining putative progenitor cells. Early lumen-filling lesions in this model exhibited hyperactivation of EGFR signaling, altered solubility of adherens junctions components, and loss of epithelial polarity. Renal cortical epithelial cells derived from either early or late lesions were dependent on EGF for in vitro proliferation and were arrested by pharmacologic inhibition of EGFR or re-expression of Nf2. These cells formed malignant tumors upon s.c. injection into immunocompromised mice before in vitro passage. Treatment of Vil-Cre;Nf2(lox/lox) mice with the EGFR inhibitor erlotinib halted the proliferation of tumor cells. These studies give added credence to the role of EGFR signaling and perhaps Nf2 deficiency in RCC and describe a rare and valuable mouse model for exploring the molecular basis of this disease.
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