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Kaupang Å, Hansen TV. The PPAR Ω Pocket: Renewed Opportunities for Drug Development. PPAR Res 2020; 2020:9657380. [PMID: 32695150 PMCID: PMC7351019 DOI: 10.1155/2020/9657380] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
The past decade of PPARγ research has dramatically improved our understanding of the structural and mechanistic bases for the diverging physiological effects of different classes of PPARγ ligands. The discoveries that lie at the heart of these developments have enabled the design of a new class of PPARγ ligands, capable of isolating central therapeutic effects of PPARγ modulation, while displaying markedly lower toxicities than previous generations of PPARγ ligands. This review examines the emerging framework around the design of these ligands and seeks to unite its principles with the development of new classes of ligands for PPARα and PPARβ/δ. The focus is on the relationships between the binding modes of ligands, their influence on PPAR posttranslational modifications, and gene expression patterns. Specifically, we encourage the design and study of ligands that primarily bind to the Ω pockets of PPARα and PPARβ/δ. In support of this development, we highlight already reported ligands that if studied in the context of this new framework may further our understanding of the gene programs regulated by PPARα and PPARβ/δ. Moreover, recently developed pharmacological tools that can be utilized in the search for ligands with new binding modes are also presented.
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Affiliation(s)
- Åsmund Kaupang
- Section for Pharmaceutical Chemistry, Department of Pharmacy, University of Oslo, 0316 Oslo, Norway
| | - Trond Vidar Hansen
- Section for Pharmaceutical Chemistry, Department of Pharmacy, University of Oslo, 0316 Oslo, Norway
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2
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Peng T, Wang G, Cheng S, Xiong Y, Cao R, Qian K, Ju L, Wang X, Xiao Y. The role and function of PPARγ in bladder cancer. J Cancer 2020; 11:3965-3975. [PMID: 32328200 PMCID: PMC7171493 DOI: 10.7150/jca.42663] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 03/08/2020] [Indexed: 12/15/2022] Open
Abstract
Peroxisome proliferator-activated receptor gamma (PPARγ), a member of the nuclear receptor superfamily, participates in multiple physiological and pathological processes. Extensive studies have revealed the relationship between PPARγ and various tumors. However, the expression and function of PPARγ in bladder cancer seem to be controversial. It has been demonstrated that PPARγ affects the occurrence and progression of bladder cancer by regulating proliferation, apoptosis, metastasis, and reactive oxygen species (ROS) and lipid metabolism, probably through PPARγ-SIRT1 feedback loops, the PI3K-Akt signaling pathway, and the WNT/β-catenin signaling pathway. Considering the frequent relapses after chemotherapy, some researchers have focused on the relationship between PPARγ and chemotherapy sensitivity in bladder cancer. Moreover, the feasibility of PPARγ ligands as potential therapeutic targets for bladder cancer has been uncovered. Taken together, this review summarizes the relevant literature and our findings to explore the complicated role and function of PPARγ in bladder cancer.
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Affiliation(s)
- Tianchen Peng
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Wuhan, China
| | - Gang Wang
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Human Genetics Resource Preservation Center of Wuhan University, Wuhan, China.,Human Genetics Resource Preservation Center of Hubei Province, Wuhan, China
| | - Songtao Cheng
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Wuhan, China
| | - Yaoyi Xiong
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Wuhan, China
| | - Rui Cao
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Kaiyu Qian
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Human Genetics Resource Preservation Center of Wuhan University, Wuhan, China.,Human Genetics Resource Preservation Center of Hubei Province, Wuhan, China
| | - Lingao Ju
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Human Genetics Resource Preservation Center of Wuhan University, Wuhan, China.,Human Genetics Resource Preservation Center of Hubei Province, Wuhan, China
| | - Xinghuan Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yu Xiao
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Human Genetics Resource Preservation Center of Wuhan University, Wuhan, China.,Human Genetics Resource Preservation Center of Hubei Province, Wuhan, China.,Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Wuhan, China
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Tuccori M, Convertino I, Galiulo MT, Marino A, Capogrosso-Sansone A, Blandizzi C. Diabetes drugs and the incidence of solid cancers: a survey of the current evidence. Expert Opin Drug Saf 2017; 16:1133-1148. [PMID: 28748718 DOI: 10.1080/14740338.2017.1361401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The evaluation of the relationship between the use of antidiabetic drug and the occurrence of cancer is extremely challenging, both from the clinical and pharmacoepidemiological standpoint. This narrative review described the current evidence supporting a relationship between the use of antidiabetic drugs and the incidence of solid cancers. Areas covered: Data from pharmacoepidemiological studies on cancer incidence were presented for the main antidiabetic drugs and drug classes, including human insulin and insulin analogues, metformin, sulfonylureas, glinides, alpha-glucosidase inhibitors, thiazolidinediones, incretin mimetics, and sodium glucose co-transporter 2 inhibitors. The relationship between the use of antidiabetics and the incidence of solid cancer was described in strata by any cancer and by organ-specific cancer and by drug and by drug classes. Information supporting biological evidence and putative mechanisms were also provided. Expert opinion: The history of exploration of the relationship between antidiabetic drugs and the risk of solid cancers has showed several issues. Unrecognized biases and misinterpretations of study results have had important consequences that delayed the identification of actual risk and benefits of the use of antidiabetic drugs associated with cancer occurrence or progression. The lesson learned from the past should address the future research in this area, since in the majority of cases findings are controversial and confirmatory studies are warranted.
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Affiliation(s)
- Marco Tuccori
- a Unit of Adverse Drug Reaction Monitoring , University Hospital of Pisa , Pisa , Italy
| | - Irma Convertino
- b Department of Clinical and Experimental Medicine , University of Pisa , Pisa , Italy
| | - Maria Teresa Galiulo
- b Department of Clinical and Experimental Medicine , University of Pisa , Pisa , Italy
| | - Alessandra Marino
- b Department of Clinical and Experimental Medicine , University of Pisa , Pisa , Italy
| | | | - Corrado Blandizzi
- a Unit of Adverse Drug Reaction Monitoring , University Hospital of Pisa , Pisa , Italy.,b Department of Clinical and Experimental Medicine , University of Pisa , Pisa , Italy
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Turner RM, Kwok CS, Chen-Turner C, Maduakor CA, Singh S, Loke YK. Thiazolidinediones and associated risk of bladder cancer: a systematic review and meta-analysis. Br J Clin Pharmacol 2014; 78:258-73. [PMID: 24325197 PMCID: PMC4137819 DOI: 10.1111/bcp.12306] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 11/25/2013] [Indexed: 12/17/2022] Open
Abstract
AIMS To determine whether thiazolidinedione use is associated with a risk of bladder cancer. METHODS We searched MEDLINE and EMBASE in June 2012 (with PubMed update to July 2013) and conducted meta-analysis on the overall risks of bladder cancer with pioglitazone or rosiglitazone and the risk with different categories of cumulative dose or duration of drug use. RESULTS We screened 230 citations and included 18 studies, comprising five randomized controlled trials (RCTs) and 13 observational studies. Meta-analysis showed a significantly higher overall risk of bladder cancer with pioglitazone in RCTs [7878 participants; odds ratio (OR) 2.51, 95% confidence interval (CI) 1.09-5.80] and observational studies (>2.6 million patients; OR for 'ever' users vs. non-users 1.21, 95% CI 1.09-1.35). Subgroup analysis of observational studies by cumulative dose showed the risk of bladder cancer to be greatest with >28.0 g of pioglitazone (OR 1.64, 95% CI 1.28-2.12). A significantly increased risk was found with both 12-24 months (OR 1.41, 95% CI 1.16-1.71) and >24 months (OR 1.51, 95% CI 1.26-1.81) cumulative durations of pioglitazone exposure. No significant risk was seen with rosiglitazone in RCTs (OR 0.84, 95% CI 0.35-2.04) or 'ever' users vs. non-users in observational studies (OR 1.03, 95% CI 0.94-1.12); the evidence for any relationship between bladder cancer risk and rosiglitazone cumulative duration is limited and inconsistent. Direct comparison of pioglitazone to rosiglitazone 'ever' users yielded an OR of 1.25 (95% CI 0.91-1.72). CONCLUSIONS A modest but clinically significant increase in the risk of bladder cancer with pioglitazone was found, which appears to be related to cumulative dose and duration of exposure. We recommend that prescribers limit pioglitazone use to shorter durations.
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Affiliation(s)
- Richard M Turner
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK; Royal Liverpool University Hospital, Liverpool, UK
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5
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Ellis HP, Kurian KM. Biological Rationale for the Use of PPARγ Agonists in Glioblastoma. Front Oncol 2014; 4:52. [PMID: 24672773 PMCID: PMC3953711 DOI: 10.3389/fonc.2014.00052] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 03/03/2014] [Indexed: 11/20/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common primary intrinsic central nervous system tumor and has an extremely poor overall survival with only 10% patients being alive after 5 years. There has been interesting preliminary evidence suggesting that diabetic patients receiving peroxisome proliferator-activated receptor gamma (PPARγ) agonists, a group of anti-diabetic, thiazolidinedione drugs, have an increased median survival for glioblastoma. Although thiazolidinediones are effective oral medications for type 2 diabetes, certain agonists carry the risk for congestive heart failure, myocardial infarction, cardiovascular disease, bone loss, weight gain, and fluid retention as side-effects. The nuclear receptor transcription factor PPARγ has been found to be expressed in high grade gliomas, and its activation has been shown to have several antineoplastic effects on human and rat glioma cell lines, and in some instances an additional protective increase in antioxidant enzymes has been observed in normal astrocytes. At present, no clinical trials are underway with regards to treating glioma patients using PPARγ agonists. This review presents the case for evaluating the potential of PPARγ agonists as novel adjuvants in the treatment of refractory high grade glioma.
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Affiliation(s)
| | - Kathreena Mary Kurian
- Brain Tumour Research Group, Institute of Clinical Neuroscience, University of Bristol , Bristol , UK
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Greaves P, Chouinard L, Ernst H, Mecklenburg L, Pruimboom-brees IM, Rinke M, Rittinghausen S, Thibault S, Von erichsen J, Yoshida T. Proliferative and non-proliferative lesions of the rat and mouse soft tissue, skeletal muscle and mesothelium. J Toxicol Pathol 2013; 26:1S-26S. [PMID: 25035576 PMCID: PMC4091527 DOI: 10.1293/tox.26.1s] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The INHAND Project (International Harmonization of Nomenclature and Diagnostic Criteria for Lesions in Rats and Mice) is a joint initiative of the Societies of Toxicologic Pathology from Europe (ESTP), Great Britain (BSTP), Japan (JSTP), and North America (STP) to develop an internationally accepted nomenclature for proliferative and nonproliferative lesions in laboratory animals. The purpose of this publication is to provide a standardized nomenclature for classifying lesions observed in the soft tissues including skeletal muscle as well as the mesothelium of rats and mice. The standardized nomenclature of lesions presented in this document is also available electronically on the Internet (http://www.goreni.org/). Sources of material included histopathology databases from government, academia, and industrial laboratories throughout the world. Content includes spontaneous developmental and aging lesions as well as those induced by exposure to test materials. A widely accepted and utilized international harmonization of nomenclature for lesions in soft tissues, skeletal muscle and mesothelium in laboratory animals will decrease confusion among regulatory and scientific research organizations in different countries and provide a common language to increase and enrich international exchanges of information among toxicologists and pathologists. (DOI: 10.1293/tox.26.1S; J Toxicol Pathol 2013; 26: 1S-26S).
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Affiliation(s)
- Peter Greaves
- University of Leicester, Department of Cancer Studies,
Leicester, UK
| | | | - Heinrich Ernst
- Fraunhofer Institute for Toxicology and Experimental
Medicine ITEM, Hannover, Germany
| | | | | | | | - Susanne Rittinghausen
- Fraunhofer Institute for Toxicology and Experimental
Medicine ITEM, Hannover, Germany
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7
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Stay vigilant: a glitazone (pioglitazone) can hide a glitazar! Eur J Clin Pharmacol 2012; 68:1681-3. [DOI: 10.1007/s00228-012-1299-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 04/18/2012] [Indexed: 10/28/2022]
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8
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Pirat C, Farce A, Lebègue N, Renault N, Furman C, Millet R, Yous S, Speca S, Berthelot P, Desreumaux P, Chavatte P. Targeting Peroxisome Proliferator-Activated Receptors (PPARs): Development of Modulators. J Med Chem 2012; 55:4027-61. [DOI: 10.1021/jm101360s] [Citation(s) in RCA: 139] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Céline Pirat
- Laboratoire de Chimie Thérapeutique,
Faculté des Sciences Pharmaceutiques et Biologiques, Université Lille-Nord de France, EA 4481, 3
Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Amaury Farce
- Laboratoire de Chimie Thérapeutique,
Faculté des Sciences Pharmaceutiques et Biologiques, Université Lille-Nord de France, EA 4481, 3
Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Nicolas Lebègue
- Laboratoire de Chimie Thérapeutique,
Faculté des Sciences Pharmaceutiques et Biologiques, Université Lille-Nord de France, EA 4481, 3
Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Nicolas Renault
- Laboratoire de Chimie Thérapeutique,
Faculté des Sciences Pharmaceutiques et Biologiques, Université Lille-Nord de France, EA 4481, 3
Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Christophe Furman
- Institut de Chimie Pharmaceutique
Albert Lespagnol, Université Lille-Nord de France, EA 4481, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex,
France
| | - Régis Millet
- Institut de Chimie Pharmaceutique
Albert Lespagnol, Université Lille-Nord de France, EA 4481, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex,
France
| | - Saı̈d Yous
- Laboratoire de Chimie Thérapeutique,
Faculté des Sciences Pharmaceutiques et Biologiques, Université Lille-Nord de France, EA 4481, 3
Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Silvia Speca
- Faculté de
Médecine, Amphis J et K, Université Lille-Nord de France, INSERM U995, Boulevard du Professeur Jules
Leclerc, 59045 Lille Cedex, France
| | - Pascal Berthelot
- Laboratoire de Chimie Thérapeutique,
Faculté des Sciences Pharmaceutiques et Biologiques, Université Lille-Nord de France, EA 4481, 3
Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Pierre Desreumaux
- Faculté de
Médecine, Amphis J et K, Université Lille-Nord de France, INSERM U995, Boulevard du Professeur Jules
Leclerc, 59045 Lille Cedex, France
| | - Philippe Chavatte
- Laboratoire de Chimie Thérapeutique,
Faculté des Sciences Pharmaceutiques et Biologiques, Université Lille-Nord de France, EA 4481, 3
Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
- Institut de Chimie Pharmaceutique
Albert Lespagnol, Université Lille-Nord de France, EA 4481, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex,
France
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9
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Tseng CH, Tseng FH. Peroxisome proliferator-activated receptor agonists and bladder cancer: lessons from animal studies. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2012; 30:368-402. [PMID: 23167631 DOI: 10.1080/10590501.2012.735519] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This article reviews available animal studies on the possible link between the use of peroxisome proliferator-activated receptor (PPAR) agonists and bladder cancer, with further discussion on the possible implications to humans. Carcinogenicity studies suggest that the PPARγ agonist pioglitazone and dual PPARα/γ agonists such as ragaglitazar, muraglitazar, and naveglitazar may increase the risk of bladder cancer in a dose-responsive pattern in rats. It is interesting that bladder cancer related to PPAR agonists shows remarkable species- and sex-specificity and has a predilection to occur in the ventral dome of bladder in rodents. While male rats treated with pioglitazone or muraglitazar have a higher propensity to develop bladder cancer than female rats, mice of both sexes do not develop bladder cancer even when exposed to very high doses. Direct genotoxicity or cytotoxicity of PPAR agonists is unlikely to be the mode of action because most of the parent compounds or their metabolites of the PPAR agonists are neither mutagenic nor genotoxic, and they are rarely excreted in the urine; but a receptor-mediated PPAR effect cannot be excluded. Some suggest a "urolithiasis hypothesis" referring to the formation of urinary solids and calculi, which subsequently causes bladder necrosis, regenerative proliferation, hypertrophy, and cancer. However, whether these animal findings could have human relevance is not yet fully understood. Some argue that the urolithiasis-induced bladder cancer might be rat-specific and would probably not be applicable to humans. An effect of increased urinary growth factors induced by PPAR agonists has also been proposed, but this requires more investigations. Before fully clarified, a balance between the risks and benefits of the use of pioglitazone, an approved oral antidiabetic agent that has recently been linked to an increased but not yet confirmed risk of bladder cancer in humans, should be justified for individual use.
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Affiliation(s)
- Chin-Hsiao Tseng
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan.
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Dodd D, Willson G, Parkinson H, Bermudez E. Two-year drinking water carcinogenicity study of methyl tertiary-butyl ether (MTBE) in Wistar rats. J Appl Toxicol 2011; 33:593-606. [DOI: 10.1002/jat.1776] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 10/19/2011] [Accepted: 10/20/2011] [Indexed: 01/22/2023]
Affiliation(s)
- Darol Dodd
- The Hamner Institutes for Health Sciences; 6 Davis Drive; Research Triangle Park; NC; 27709-2137; USA
| | - Gabrielle Willson
- EPL North Carolina; PO Box 12766; Research Triangle Park; NC; 27709; USA
| | - Horace Parkinson
- The Hamner Institutes for Health Sciences; 6 Davis Drive; Research Triangle Park; NC; 27709-2137; USA
| | - Edilberto Bermudez
- The Hamner Institutes for Health Sciences; 6 Davis Drive; Research Triangle Park; NC; 27709-2137; USA
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Concomitant deletions of tumor suppressor genes MEN1 and AIP are essential for the pathogenesis of the brown fat tumor hibernoma. Proc Natl Acad Sci U S A 2010; 107:21122-7. [PMID: 21078971 DOI: 10.1073/pnas.1013512107] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Hibernomas are benign tumors with morphological features resembling brown fat. They consistently display cytogenetic rearrangements, typically translocations, involving chromosome band 11q13. Here we demonstrate that these aberrations are associated with concomitant deletions of AIP and MEN1, tumor suppressor genes that are located 3 Mb apart and that underlie the hereditary syndromes pituitary adenoma predisposition and multiple endocrine neoplasia type I. MEN1 and AIP displayed a low expression in hibernomas whereas the expression of genes up-regulated in brown fat--PPARA, PPARG, PPARGC1A, and UCP1--was high. Thus, loss of MEN1 and AIP is likely to be pathogenetically essential for hibernoma development. Simultaneous loss of two tumor suppressor genes has not previously been shown to result from a neoplasia-associated translocation. Furthermore, in contrast to the prevailing assumption that benign tumors harbor relatively few genetic aberrations, the present analyses demonstrate that a considerable number of chromosome breaks are involved in the pathogenesis of hibernoma.
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12
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Long GG. Commentary on “Evaluation of Possible Carcinogenic Risk to Humans Based on Liver Tumors in Rodent Assays. Toxicol Pathol 2010; 38:502-5. [DOI: 10.1177/0192623309359795] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Gerald G. Long
- Eli Lilly and Company, Lilly Research Laboratories, Indianapolis, Indiana, USA
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