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Rakheja D, Park JY, Alhasan M, Uddin N. Spindle Cell/Sclerosing Rhabdomyosarcoma With PAX8::PPARG Fusion. Int J Surg Pathol 2022; 30:950-955. [DOI: 10.1177/10668969221095170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The spindle cell/sclerosing subtype of rhabdomyosarcoma is classified based on genetic features into the three categories of MYOD1-mutated, gene fusion-driven, and a subset without a currently identified genetic driver event. The gene fusion-driven spindle cell/sclerosing rhabdomyosarcomas are heterogenous and characterized by increasing numbers of gene fusions, the most common gene partners being VGLL2, NCOA2, and TFCP2. Here we report a spindle cell/sclerosing rhabdomyosarcoma that arose in the orbit of a 4-year-old male. This tumor harbored a unique PAX8::PPARG fusion. PAX8::PPARG fusions have previously only been described in follicular thyroid carcinoma and follicular variant of papillary thyroid carcinoma. Our report adds to the growing number of gene fusions in spindle cell/sclerosing rhabdomyosarcomas.
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Affiliation(s)
- Dinesh Rakheja
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Children’s Health, Dallas, TX, USA
| | - Jason Y. Park
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Children’s Health, Dallas, TX, USA
| | - Mustafa Alhasan
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Children’s Health, Dallas, TX, USA
| | - Naseem Uddin
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Children’s Health, Dallas, TX, USA
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2
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A bioinformatics approach revealed the transcription factors of Helicobacter pylori pathogenic genes and their regulatory network nodes. ELECTRON J BIOTECHN 2020. [DOI: 10.1016/j.ejbt.2020.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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3
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Boufraqech M, Nilubol N. Multi-omics Signatures and Translational Potential to Improve Thyroid Cancer Patient Outcome. Cancers (Basel) 2019; 11:cancers11121988. [PMID: 31835496 PMCID: PMC6966476 DOI: 10.3390/cancers11121988] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023] Open
Abstract
Recent advances in high-throughput molecular and multi-omics technologies have improved our understanding of the molecular changes associated with thyroid cancer initiation and progression. The translation into clinical use based on molecular profiling of thyroid tumors has allowed a significant improvement in patient risk stratification and in the identification of targeted therapies, and thereby better personalized disease management and outcome. This review compiles the following: (1) the major molecular alterations of the genome, epigenome, transcriptome, proteome, and metabolome found in all subtypes of thyroid cancer, thus demonstrating the complexity of these tumors and (2) the great translational potential of multi-omics studies to improve patient outcome.
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4
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Staubitz JI, Musholt PB, Musholt TJ. The surgical dilemma of primary surgery for follicular thyroid neoplasms. Best Pract Res Clin Endocrinol Metab 2019; 33:101292. [PMID: 31434622 DOI: 10.1016/j.beem.2019.101292] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Follicular thyroid carcinoma is the second most prevalent form of differentiated thyroid carcinoma, following papillary thyroid carcinoma. Preoperative diagnosis is hampered by the fact that fine-needle aspiration cytology as well as supplemental molecular analysis cannot unambiguously distinguish between follicular thyroid carcinoma and benign follicular thyroid adenoma. The 2017 WHO classification defines three histological subtypes of follicular thyroid carcinoma: minimally invasive (excellent prognosis), encapsulated angioinvasive, and widely invasive type (higher risk of recurrence and metastatic spread). The fact that definite characterization of follicular neoplasms is predominantly a postoperative histological diagnosis (core criteria: capsular, vascular and adjacent tissue invasion) translates into the challenge for the thyroid surgeon to plan preoperatively for presence of malignancy and, if required, to adapt the surgical strategy according to intraoperative (frozen section) or postoperative histological findings. Until improved tools for pre-/intraoperative diagnosis are available, the malignant potential of a follicular thyroid lesion can be assessed by stratifying the patient according to clinical risk factors (presence of metastases, advanced patient age, tumor size). A stepwise, escalating surgical approach with restricted primary resection (hemithyroidectomy) and completion surgery based on the definite histopathology is another option to solve this dilemma. The currently recommended surgical treatment strategies for FTCs as published by ATA, BTA, CAEK and ESES are discussed. There is consensus that prophylactic lymphadenectomy is not required for FTCs and that hemithyroidectomy is sufficient in low-risk FTCs (capsular invasion only) whereas thyroidectomy with postoperative radioiodine therapy is indicated in high-risk FTCs (angioinvasion; widely invasive FTC).
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Affiliation(s)
- Julia I Staubitz
- Section of Endocrine Surgery, Department of General, Visceral and Transplantation Surgery, University Medicine Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.
| | - Petra B Musholt
- Section of Endocrine Surgery, Department of General, Visceral and Transplantation Surgery, University Medicine Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.
| | - Thomas J Musholt
- Section of Endocrine Surgery, Department of General, Visceral and Transplantation Surgery, University Medicine Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.
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5
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Valvo V, Nucera C. Coding Molecular Determinants of Thyroid Cancer Development and Progression. Endocrinol Metab Clin North Am 2019; 48:37-59. [PMID: 30717910 PMCID: PMC6366338 DOI: 10.1016/j.ecl.2018.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Thyroid cancer is the most common endocrine malignancy. Its incidence and mortality rates have increased for patients with advanced-stage papillary thyroid cancer. The characterization of the molecular pathways essential in thyroid cancer initiation and progression has made huge progress, underlining the role of intracellular signaling to promote clonal evolution, dedifferentiation, metastasis, and drug resistance. The discovery of genetic alterations that include mutations (BRAF, hTERT), translocations, deletions (eg, 9p), and copy-number gain (eg, 1q) has provided new biological insights with clinical applications. Understanding how molecular pathways interplay is one of the key strategies to develop new therapeutic treatments and improve prognosis.
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Affiliation(s)
- Veronica Valvo
- Laboratory of Human Thyroid Cancers Preclinical and Translational Research, Division of Experimental Pathology, Department of Pathology, Cancer Research Institute (CRI), Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, 99 Brookline Avenue, Boston, MA 02215, USA; Department of Pathology, Center for Vascular Biology Research (CVBR), Beth Israel Deaconess Medical Center, Harvard Medical School, 99 Brookline Avenue, Boston, MA 02215, USA
| | - Carmelo Nucera
- Laboratory of Human Thyroid Cancers Preclinical and Translational Research, Division of Experimental Pathology, Department of Pathology, Cancer Research Institute (CRI), Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, 99 Brookline Avenue, Boston, MA 02215, USA; Department of Pathology, Center for Vascular Biology Research (CVBR), Beth Israel Deaconess Medical Center, Harvard Medical School, 99 Brookline Avenue, Boston, MA 02215, USA; Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA.
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6
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Leung DTH, Nguyen T, Oliver EM, Matti J, Alexiadis M, Silke J, Jobling TW, Fuller PJ, Chu S. Combined PPARγ Activation and XIAP Inhibition as a Potential Therapeutic Strategy for Ovarian Granulosa Cell Tumors. Mol Cancer Ther 2018; 18:364-375. [PMID: 30530769 DOI: 10.1158/1535-7163.mct-18-0078] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 06/25/2018] [Accepted: 12/04/2018] [Indexed: 11/16/2022]
Abstract
Ovarian granulosa cell tumors (GCT) are characterized by indolent growth and late relapse. No therapeutic modalities aside from surgery have proven effective. We previously reported overexpression of the nuclear receptor, peroxisome proliferator-activated receptor-gamma (PPARγ), and constitutive activity of the NFκB and AP1 signaling pathways in GCT. PPARγ presents as a potential therapeutic target as it impedes proliferation and promotes terminal differentiation of granulosa cells. However, resistance to the actions of PPARγ is caused by NFκB transrepression in GCT-derived cell lines, KGN and COV434. We showed that abrogation of NFκB signaling in GCT cells enables PPARγ agonists to initiate apoptosis. In addition, we observed overexpression of an NFκB-induced gene, X-linked inhibitor of apoptosis protein (XIAP), in GCT and GCT-derived cells. XIAP is an attractive therapeutic target due to its role in inhibiting the apoptotic pathway. We investigated the antitumor effects of combined XIAP inhibition using Smac-mimetics and PPARγ activation using thiazolidinediones (TZD) in the GCT-derived cells. Transactivation assays revealed that NFκB transrepression of PPARγ can be relieved by NFκB or XIAP inhibition. Combined Smac-mimetic and TZD significantly induced apoptosis, reduced cell viability and proliferation in KGN cells in monolayer and 3D spheroid culture, and in GCT explant models. The Smac-mimetic and TZD cotreatment also delayed cell invasion, upregulated proapoptotic genes, and compromised cell metabolism in KGN cells. This study provides evidence that PPARγ and XIAP cotreatment has antineoplastic effects in GCT. As therapeutics that target these proteins are already in clinical or preclinical use, expedient translation to the clinic is possible.
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Affiliation(s)
- Dilys T H Leung
- Hudson Institute of Medical Research and the Monash University Department of Molecular and Translational Science, Clayton, Victoria, Australia
| | - Trang Nguyen
- Hudson Institute of Medical Research and the Monash University Department of Molecular and Translational Science, Clayton, Victoria, Australia
| | - Edwina May Oliver
- Hudson Institute of Medical Research and the Monash University Department of Molecular and Translational Science, Clayton, Victoria, Australia
| | - Juliana Matti
- Hudson Institute of Medical Research and the Monash University Department of Molecular and Translational Science, Clayton, Victoria, Australia
| | - Maria Alexiadis
- Hudson Institute of Medical Research and the Monash University Department of Molecular and Translational Science, Clayton, Victoria, Australia
| | - John Silke
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Thomas W Jobling
- Department of Gynecology Oncology, Monash Health, Clayton, Victoria, Australia
| | - Peter J Fuller
- Hudson Institute of Medical Research and the Monash University Department of Molecular and Translational Science, Clayton, Victoria, Australia
| | - Simon Chu
- Hudson Institute of Medical Research and the Monash University Department of Molecular and Translational Science, Clayton, Victoria, Australia.
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7
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Abstract
Thyroid nodules are heterogeneous tumors with variable genetic signatures. Thyroid cancers are monoclonal lesions with a defined histomorphology that largely depends on the underlying somatic mutation. While the mutation rate is generally low in differentiated thyroid cancers, poorly differentiated and anaplastic thyroid cancers show a high mutation load. The identification of somatic mutations in fine needle aspirates can be helpful for the differential diagnostics of thyroid nodules; however, a prognostic contribution is less certain. The molecular pathology of thyroid tumors is helpful for the development of targeted therapies and may infer novel immuno-oncological concepts for advanced aggressive thyroid cancers.
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Affiliation(s)
- D Führer
- Klinik für Endokrinologie, Diabetologie und Stoffwechsel, Universitätsklinikum Essen, Universität Duisburg-Essen, Hufelandstr. 55, 45147, Essen, Deutschland.
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8
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de Koster EJ, de Geus-Oei LF, Dekkers OM, van Engen-van Grunsven I, Hamming J, Corssmit EPM, Morreau H, Schepers A, Smit J, Oyen WJG, Vriens D. Diagnostic Utility of Molecular and Imaging Biomarkers in Cytological Indeterminate Thyroid Nodules. Endocr Rev 2018; 39:154-191. [PMID: 29300866 DOI: 10.1210/er.2017-00133] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 12/27/2017] [Indexed: 12/21/2022]
Abstract
Indeterminate thyroid cytology (Bethesda III and IV) corresponds to follicular-patterned benign and malignant lesions, which are particularly difficult to differentiate on cytology alone. As ~25% of these nodules harbor malignancy, diagnostic hemithyroidectomy is still custom. However, advanced preoperative diagnostics are rapidly evolving.This review provides an overview of additional molecular and imaging diagnostics for indeterminate thyroid nodules in a preoperative clinical setting, including considerations regarding cost-effectiveness, availability, and feasibility of combining techniques. Addressed diagnostics include gene mutation analysis, microRNA, immunocytochemistry, ultrasonography, elastosonography, computed tomography, sestamibi scintigraphy, [18F]-2-fluoro-2-deoxy-d-glucose positron emission tomography (FDG-PET), and diffusion-weighted magnetic resonance imaging.The best rule-out tests for malignancy were the Afirma® gene expression classifier and FDG-PET. The most accurate rule-in test was sole BRAF mutation analysis. No diagnostic had both near-perfect sensitivity and specificity, and estimated cost-effectiveness. Molecular techniques are rapidly advancing. However, given the currently available techniques, a multimodality stepwise approach likely offers the most accurate diagnosis, sequentially applying one sensitive rule-out test and one specific rule-in test. Geographical variations in cytology (e.g., Hürthle cell neoplasms) and tumor genetics strongly influence local test performance and clinical utility. Multidisciplinary collaboration and implementation studies can aid the local decision for one or more eligible diagnostics.
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Affiliation(s)
- Elizabeth J de Koster
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Lioe-Fee de Geus-Oei
- Department of Radiology, Section of Nuclear Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - Olaf M Dekkers
- Department of Endocrinology, Leiden University Medical Center, Leiden, the Netherlands.,Department of Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Jaap Hamming
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Eleonora P M Corssmit
- Department of Endocrinology, Leiden University Medical Center, Leiden, the Netherlands
| | - Hans Morreau
- Department of Pathology, Leiden University Medical Center, Leiden, the Netherlands
| | - Abbey Schepers
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Jan Smit
- Department of Endocrinology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Wim J G Oyen
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, the Netherlands.,Division of Radiotherapy and Imaging, Institute of Cancer Research, and Department of Nuclear Medicine, Royal Marsden Hospital, London, United Kingdom
| | - Dennis Vriens
- Department of Radiology, Section of Nuclear Medicine, Leiden University Medical Center, Leiden, the Netherlands
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9
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Genomic binding of PAX8-PPARG fusion protein regulates cancer-related pathways and alters the immune landscape of thyroid cancer. Oncotarget 2018; 8:5761-5773. [PMID: 28008156 PMCID: PMC5351587 DOI: 10.18632/oncotarget.14050] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 12/13/2016] [Indexed: 12/15/2022] Open
Abstract
PAX8-PPARG fusion protein (PPFP) results from a t(2;3)(q13;p25) chromosomal translocation, is found in 30% of follicular thyroid carcinomas, and demonstrates oncogenic capacity in transgenic mice. A PPARG ligand, pioglitazone, is highly therapeutic in mice with PPFP thyroid cancer. However, only limited data exist to characterize the binding sites and oncogenic function of PPFP, or to explain the observed therapeutic effect of pioglitazone. Here we used our previously characterized transgenic mouse model of PPFP follicular thyroid carcinoma to identify PPFP binding sites in vivo using ChIP-seq, and to distinguish genes and pathways regulated directly or indirectly by PPFP with and without pioglitazone treatment via integration with RNA-seq data. PPFP bound to DNA regions containing the PAX8 and/or the PPARG motif, near genes involved in lipid metabolism, the cell cycle, apoptosis, and cell motility; the binding site distribution was highly concordant with our previous study in a rat PCCL3 cell line. Most strikingly, pioglitazone induced an immune cell infiltration including macrophages and T cells only in the presence of PPFP, which may be central to its therapeutic effect.
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10
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Abstract
BACKGROUND Gene fusions are known in many cancers as driver or passenger mutations. They play an important role in both the etiology and pathogenesis of cancer and are considered as potential diagnostic and prognostic markers and possible therapeutic targets. The spectrum and prevalence of gene fusions in thyroid cancer ranges from single cases up to 80%, depending on the specific type of cancer. During last three years, massive parallel sequencing technologies have revealed new fusions and allowed detailed characteristics of fusions in different types of thyroid cancer. SUMMARY This article reviews all known fusions and their prevalence in papillary, poorly differentiated and anaplastic, follicular, and medullary carcinomas. The mechanisms of fusion formation are described. In addition, the mechanisms of oncogenic transformation, such as altered gene expression, forced oligomerization, and subcellular localization, are given. CONCLUSION The prognostic value and perspectives of the utilization of gene fusions as therapeutic targets are discussed.
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Affiliation(s)
- Valentina D Yakushina
- 1 Research Centre for Medical Genetics , Moscow, Russian Federation
- 2 Moscow Institute of Physics and Technology , Moscow, Russian Federation
| | | | - Alexander V Lavrov
- 1 Research Centre for Medical Genetics , Moscow, Russian Federation
- 4 Russian National Research Medical University , Moscow, Russian Federation
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11
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Celestino R, Nome T, Pestana A, Hoff AM, Gonçalves AP, Pereira L, Cavadas B, Eloy C, Bjøro T, Sobrinho-Simões M, Skotheim RI, Soares P. CRABP1, C1QL1 and LCN2 are biomarkers of differentiated thyroid carcinoma, and predict extrathyroidal extension. BMC Cancer 2018; 18:68. [PMID: 29321030 PMCID: PMC5763897 DOI: 10.1186/s12885-017-3948-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 12/20/2017] [Indexed: 01/21/2023] Open
Abstract
Background The prognostic variability of thyroid carcinomas has led to the search for accurate biomarkers at the molecular level. Follicular thyroid carcinoma (FTC) is a typical example of differentiated thyroid carcinomas (DTC) in which challenges are faced in the differential diagnosis. Methods We used high-throughput paired-end RNA sequencing technology to study four cases of FTC with different degree of capsular invasion: two minimally invasive (mFTC) and two widely invasive FTC (wFTC). We searched by genes differentially expressed between mFTC and wFTC, in an attempt to find biomarkers of thyroid cancer diagnosis and/or progression. Selected biomarkers were validated by real-time quantitative PCR in 137 frozen thyroid samples and in an independent dataset (TCGA), evaluating the diagnostic and the prognostic performance of the candidate biomarkers. Results We identified 17 genes significantly differentially expressed between mFTC and wFTC. C1QL1, LCN2, CRABP1 and CILP were differentially expressed in DTC in comparison with normal thyroid tissues. LCN2 and CRABP1 were also differentially expressed in DTC when compared with follicular thyroid adenoma. Additionally, overexpression of LCN2 and C1QL1 were found to be independent predictors of extrathyroidal extension in DTC. Conclusions We conclude that the underexpression of CRABP1 and the overexpression of LCN2 may be useful diagnostic biomarkers in thyroid tumours with questionable malignity, and the overexpression of LCN2 and C1QL1 may be useful for prognostic purposes. Electronic supplementary material The online version of this article (10.1186/s12885-017-3948-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ricardo Celestino
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Department of Molecular Oncology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, P.O.Box 4953 Nydalen, 0424, Oslo, Norway.,School of Allied Health Technologies, Polytechnic of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072, Porto, Portugal
| | - Torfinn Nome
- Department of Molecular Oncology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, P.O.Box 4953 Nydalen, 0424, Oslo, Norway.,Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, 0424, Oslo, Norway
| | - Ana Pestana
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,ICBAS - Abel Salazar Biomedical Sciences Institute of the University of Porto, 4050-313, Porto, Portugal
| | - Andreas M Hoff
- Department of Molecular Oncology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, P.O.Box 4953 Nydalen, 0424, Oslo, Norway.,Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, 0424, Oslo, Norway
| | - A Pedro Gonçalves
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,ICBAS - Abel Salazar Biomedical Sciences Institute of the University of Porto, 4050-313, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Luísa Pereira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Bruno Cavadas
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Catarina Eloy
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Trine Bjøro
- Department of Medical Biochemistry, Norwegian Radium Hospital, Oslo University Hospital, 0424, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, 0318, Oslo, Norway
| | - Manuel Sobrinho-Simões
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Department of Pathology, Medical Faculty, University of Porto, 4200-319, Porto, Portugal.,Department of Pathology, Centro Hospitalar de São João, 4200-319, Porto, Portugal
| | - Rolf I Skotheim
- Department of Molecular Oncology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, P.O.Box 4953 Nydalen, 0424, Oslo, Norway. .,Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, 0424, Oslo, Norway.
| | - Paula Soares
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal. .,IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal. .,Department of Pathology, Medical Faculty, University of Porto, 4200-319, Porto, Portugal.
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12
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Giordano TJ. Genomic Hallmarks of Thyroid Neoplasia. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2017; 13:141-162. [PMID: 29083981 DOI: 10.1146/annurev-pathol-121808-102139] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The genomic landscape of thyroid cancers that are derived from follicular cells has been substantially elucidated through the coordinated application of high-throughput genomic technologies. Here, I review the common genetic alterations across the spectrum of thyroid neoplasia and present the resulting model of thyroid cancer initiation and progression. This model illustrates the striking correlation between tumor differentiation and overall somatic mutational burden, which also likely explains the highly variable clinical behavior and outcome of patients with thyroid cancers. These advances are yielding critical insights into thyroid cancer pathogenesis, which are being leveraged for the development of new diagnostic tools, prognostic and predictive biomarkers, and novel therapeutic approaches.
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Affiliation(s)
- Thomas J Giordano
- Departments of Pathology and Internal Medicine, Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA;
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13
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Führer D, Musholt T, Schmid KW. [Molecular Pathogenesis of Thyroid Nodules: Relevance for Clinical Care]. Laryngorhinootologie 2017; 96:590-596. [PMID: 28881369 DOI: 10.1055/s-0043-109180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Thyroid nodules represent heterogeneous tumors with distinct molecular signatures. While benign thyroid nodules correspond to poly- or monoclonal tumors, thyroid carcinomas are monoclonal and thus "real" neoplasms. These are caused by somatic mutations that lead to the constitutive activation of specific signaling cascades and determine the corresponding histology and also partly the functional phenotype of the thyroid tumor. Dedifferentiation of thyroid carcinomas is accompanied by the occurrence of additional mutations in the tumors. The mutation load of thyroid carcinomas correlates with their biological behavior. In clinical practice, detection of somatic mutations can help in the cytological differential diagnosis. In the prognostic assessment of thyroid tumors, proof of classical oncogene mutations (BRAF, RAS) has little relevance. Other genetic alterations, especially TERT promoter mutations that occur with increasing frequency in advanced thyroid carcinomas, probably have a prognostic significance. The molecular signature, however, is of great relevance for the development and application of targeted therapies in advanced carcinomas (radioactive iodine-refractory DTC, PDTC and ATC, metastatic medullary carcinoma). For this, there is increasing evidence from clinical studies and case reports that underline the concept of "oncogene addiction" as a pathogenetically relevant mechanism of thyroid tumorigenesis and carcinogenesis.
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Affiliation(s)
- D Führer
- Klinik für Endokrinologie und Stoffwechselerkrankungen, Zentrallabor - Bereich Forschung und Lehre, Endokrines Tumorzentrum am WTZ und ENETS Center of Excellence, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen
| | - T Musholt
- Sektion Endokrine Chirurgie, Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsmedizin Mainz, Mainz
| | - K W Schmid
- Institut für Pathologie, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen
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14
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Xu B, O'Donnell M, O'Donnell J, Yu J, Zhang Y, Sartor MA, Koenig RJ. Adipogenic Differentiation of Thyroid Cancer Cells Through the Pax8-PPARγ Fusion Protein Is Regulated by Thyroid Transcription Factor 1 (TTF-1). J Biol Chem 2016; 291:19274-86. [PMID: 27435678 DOI: 10.1074/jbc.m116.740324] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Indexed: 01/22/2023] Open
Abstract
A subset of thyroid carcinomas contains a t(2;3)(q13;p25) chromosomal translocation that fuses paired box gene 8 (PAX8) with the peroxisome proliferator-activated receptor γ gene (PPARG), resulting in expression of a PAX8-PPARγ fusion protein, PPFP. We previously generated a transgenic mouse model of PPFP thyroid carcinoma and showed that feeding the PPARγ agonist pioglitazone greatly decreased the size of the primary tumor and prevented metastatic disease in vivo The antitumor effect correlates with the fact that pioglitazone turns PPFP into a strongly PPARγ-like molecule, resulting in trans-differentiation of the thyroid cancer cells into adipocyte-like cells that lose malignant character as they become more differentiated. To further study this process, we performed cell culture experiments with thyrocytes from the PPFP mouse thyroid cancers. Our data show that pioglitazone induced cellular lipid accumulation and the expression of adipocyte marker genes in the cultured cells, and shRNA knockdown of PPFP eliminated this pioglitazone effect. In addition, we found that PPFP and thyroid transcription factor 1 (TTF-1) physically interact, and that these transcription factors bind near each other on numerous target genes. TTF-1 knockdown and overexpression studies showed that TTF-1 inhibits PPFP target gene expression and impairs adipogenic trans-differentiation. Surprisingly, pioglitazone repressed TTF-1 expression in PPFP-expressing thyrocytes. Our data indicate that TTF-1 interacts with PPFP to inhibit the pro-adipogenic response to pioglitazone, and that the ability of pioglitazone to decrease TTF-1 expression contributes to its pro-adipogenic action.
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Affiliation(s)
- Bin Xu
- From the Department of Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes, University of Michigan Medical Center, Ann Arbor, Michigan 48109-5678 and
| | - Michael O'Donnell
- From the Department of Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes, University of Michigan Medical Center, Ann Arbor, Michigan 48109-5678 and
| | - Jeffrey O'Donnell
- From the Department of Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes, University of Michigan Medical Center, Ann Arbor, Michigan 48109-5678 and
| | - Jingcheng Yu
- From the Department of Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes, University of Michigan Medical Center, Ann Arbor, Michigan 48109-5678 and
| | - Yanxiao Zhang
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109-2218
| | - Maureen A Sartor
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109-2218
| | - Ronald J Koenig
- From the Department of Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes, University of Michigan Medical Center, Ann Arbor, Michigan 48109-5678 and
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