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Pires C, Marques IJ, Saramago A, Moura MM, Pojo M, Cabrera R, Santos C, Rosário F, Lousa D, Vicente JB, Bandeiras TM, Teixeira MR, Leite V, Cavaco BM. Identification of novel candidate predisposing genes in familial nonmedullary thyroid carcinoma implicating DNA damage repair pathways. Int J Cancer 2024. [PMID: 39251783 DOI: 10.1002/ijc.35159] [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: 03/11/2024] [Revised: 07/08/2024] [Accepted: 08/05/2024] [Indexed: 09/11/2024]
Abstract
The genetic basis of nonsyndromic familial nonmedullary thyroid carcinoma (FNMTC) is still poorly understood, as the susceptibility genes identified so far only account for a small percentage of the genetic burden. Recently, germline mutations in DNA repair-related genes have been reported in cases with thyroid cancer. In order to clarify the genetic basis of FNMTC, 94 genes involved in hereditary cancer predisposition, including DNA repair genes, were analyzed in 48 probands from FNMTC families, through targeted next-generation sequencing (NGS). Genetic variants were selected upon bioinformatics analysis and in silico studies. Structural modeling and network analysis were also performed. In silico results of NGS data unveiled likely pathogenic germline variants in 15 families with FNMTC, in genes encoding proteins involved in DNA repair (ATM, CHEK2, ERCC2, BRCA2, ERCC4, FANCA, FANCD2, FANCF, and PALB2) and in the DICER1, FLCN, PTCH1, BUB1B, and RHBDF2 genes. Structural modeling predicted that most missense variants resulted in the disruption of networks of interactions between residues, with implications for local secondary and tertiary structure elements. Functional annotation and network analyses showed that the involved DNA repair proteins functionally interact with each other, within the same DNA repair pathway and across different pathways. MAPK activation was a common event in tumor progression. This study supports that rare germline variants in DNA repair genes may be accountable for FNMTC susceptibility, with potential future utility in patients' clinical management, and reinforces the relevance of DICER1 in disease etiology.
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Affiliation(s)
- Carolina Pires
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
- NOVA Medical School/Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Inês J Marques
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
- NOVA Medical School/Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Ana Saramago
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Margarida M Moura
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Marta Pojo
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Rafael Cabrera
- Serviço de Anatomia Patológica, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Catarina Santos
- Serviço de Genética, Instituto Português de Oncologia do Porto Francisco Gentil, Porto, Portugal
| | | | - Diana Lousa
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB), Universidade Nova de Lisboa, Oeiras, Portugal
| | - João B Vicente
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB), Universidade Nova de Lisboa, Oeiras, Portugal
| | - Tiago M Bandeiras
- Instituto de Biologia Experimental e Tecnológica (iBET), Oeiras, Portugal
| | - Manuel R Teixeira
- Serviço de Genética, Instituto Português de Oncologia do Porto Francisco Gentil, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Valeriano Leite
- NOVA Medical School/Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisbon, Portugal
- Serviço de Endocrinologia, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
| | - Branca M Cavaco
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal
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Tee A, Jones RA, Dunlop EA, Champion J, Doubleday P, Claessens T, Jalali Z, Seifan S, Perry I, Giles P, Harrison O, Coull B, Houweling A, Pause A, Ballif B. Characterizing the tumor suppressor activity of FLCN in Birt-Hogg-Dubé syndrome through transcriptiomic and proteomic analysis. RESEARCH SQUARE 2024:rs.3.rs-4510670. [PMID: 38978568 PMCID: PMC11230511 DOI: 10.21203/rs.3.rs-4510670/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Birt-Hogg-Dubé (BHD) syndrome patients are uniquely susceptible to all renal tumour subtypes. The underlying mechanism of carcinogenesis is unclear. To study cancer development in BHD, we used human proximal kidney (HK2) cells and found that long-term folliculin (FLCN) knockdown was required to increase their tumorigenic potential, forming larger spheroids in non-adherent conditions. Transcriptomic and proteomic analysis uncovered links between FLCN, cell cycle control and the DNA damage response (DDR) machinery. HK2 cells lacking FLCN had an altered transcriptome profile with cell cycle control gene enrichment. G1/S cell cycle checkpoint signaling was compromised with heightened protein levels of cyclin D1 (CCND1) and hyperphosphorylation of retinoblastoma 1 (RB1). A FLCN interactome screen uncovered FLCN binding to DNA-dependent protein kinase (DNA-PK). This novel interaction was reversed in an irradiation-responsive manner. Knockdown of FLCN in HK2 cells caused a marked elevation of γH2AX and RB1 phosphorylation. Both CCND1 and RB1 phosphorylation remained raised during DNA damage, showing an association with defective cell cycle control with FLCN knockdown. Furthermore, Flcn-knockdown C. elegans were defective in cell cycle arrest by DNA damage. This work implicates that long-term FLCN loss and associated cell cycle defects in BHD patients could contribute to their increased risk of cancer.
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Zhang Y, Liang L, Li Z, Huang Y, Jiang M, Zou B, Xu Y. Polyadenosine diphosphate-ribose polymerase inhibitors: advances, implications, and challenges in tumor radiotherapy sensitization. Front Oncol 2023; 13:1295579. [PMID: 38111536 PMCID: PMC10726039 DOI: 10.3389/fonc.2023.1295579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 11/22/2023] [Indexed: 12/20/2023] Open
Abstract
Polyadenosine diphosphate-ribose polymerase (PARP) is a key modifying enzyme in cells, which participates in single-strand break repair and indirectly affects double-strand break repair. PARP inhibitors have shown great potential in oncotherapy by exploiting DNA damage repair pathways, and several small molecule PARP inhibitors have been approved by the U.S. Food and Drug Administration for treating various tumor types. PARP inhibitors not only have significant antitumor effects but also have some synergistic effects when combined with radiotherapy; therefore they have potential as radiation sensitizers. Here, we reviewed the advances and implications of PARP inhibitors in tumor radiotherapy sensitization. First, we summarized the multiple functions of PARP and the mechanisms by which its inhibitors exert antitumor effects. Next, we discuss the immunomodulatory effects of PARP and its inhibitors in tumors. Then, we described the theoretical basis of using PARP inhibitors in combination with radiotherapy and outlined their importance in oncological radiotherapy. Finally, we reviewed the current challenges in this field and elaborated on the future applications of PARP inhibitors as radiation sensitizers. A comprehensive understanding of the mechanism, optimal dosing, long-term safety, and identification of responsive biomarkers remain key challenges to integrating PARP inhibition into the radiotherapy management of cancer patients. Therefore, extensive research in these areas would facilitate the development of precision radiotherapy using PARP inhibitors to improve patient outcomes.
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Affiliation(s)
- Yi Zhang
- Department of Radiation Oncology, Division of Thoracic Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Lijie Liang
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Zheng Li
- Department of Radiation Oncology, Division of Thoracic Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Ying Huang
- College of Management, Sichuan Agricultural University, Chengdu, China
| | - Ming Jiang
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Bingwen Zou
- Department of Radiation Oncology, Division of Thoracic Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yong Xu
- Department of Radiation Oncology, Division of Thoracic Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
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Bandini E, Zampiga V, Cangini I, Ravegnani M, Arcangeli V, Rossi T, Mammi I, Schiavi F, Zovato S, Falcini F, Calistri D, Danesi R. A Novel FLCN Variant in a Suspected Birt-Hogg-Dubè Syndrome Patient. Int J Mol Sci 2023; 24:12418. [PMID: 37569793 PMCID: PMC10419138 DOI: 10.3390/ijms241512418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 07/31/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023] Open
Abstract
Subjects with pathogenic (PV) and likely pathogenic (LPV) FLCN variants have an increased risk of manifesting benign and malignant disorders that are related to Birt-Hogg-Dubé syndrome (BHDS): an autosomal dominantly inherited disorder whose severity can vary significantly. Renal cell carcinoma (RCC) development in BHD (Birt-Hogg-Dubé) patients has a very high incidence; thus, identifying this rare syndrome at early stages and preventing metastatic spread is crucial. Over the last decade, the advancement of Next Generation Sequencing (NGS) and the implementation of multigene panels for hereditary cancer syndromes (HCS) have led to a subsequent focus on additional genes and variants, including those of uncertain significance (VUS). Here, we describe a novel FLCN variant observed in a subject manifesting disorders that were suspected to be related to BHDS and with a family history of multiple cancers.
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Affiliation(s)
- Erika Bandini
- Biosciences Laboratory, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (V.Z.); (I.C.); (T.R.); (D.C.)
| | - Valentina Zampiga
- Biosciences Laboratory, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (V.Z.); (I.C.); (T.R.); (D.C.)
| | - Ilaria Cangini
- Biosciences Laboratory, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (V.Z.); (I.C.); (T.R.); (D.C.)
| | - Mila Ravegnani
- Romagna Cancer Registry, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (M.R.); (V.A.); (F.F.); (R.D.)
| | - Valentina Arcangeli
- Romagna Cancer Registry, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (M.R.); (V.A.); (F.F.); (R.D.)
| | - Tania Rossi
- Biosciences Laboratory, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (V.Z.); (I.C.); (T.R.); (D.C.)
| | - Isabella Mammi
- Familial Cancer Unit, Veneto Institute of Oncology IOV IRCSS, 35128 Padova, Italy; (I.M.); (F.S.); (S.Z.)
| | - Francesca Schiavi
- Familial Cancer Unit, Veneto Institute of Oncology IOV IRCSS, 35128 Padova, Italy; (I.M.); (F.S.); (S.Z.)
| | - Stefania Zovato
- Familial Cancer Unit, Veneto Institute of Oncology IOV IRCSS, 35128 Padova, Italy; (I.M.); (F.S.); (S.Z.)
| | - Fabio Falcini
- Romagna Cancer Registry, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (M.R.); (V.A.); (F.F.); (R.D.)
| | - Daniele Calistri
- Biosciences Laboratory, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (V.Z.); (I.C.); (T.R.); (D.C.)
| | - Rita Danesi
- Romagna Cancer Registry, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy; (M.R.); (V.A.); (F.F.); (R.D.)
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Sculco M, La Vecchia M, Aspesi A, Pinton G, Clavenna MG, Casalone E, Allione A, Grosso F, Libener R, Muzio A, Rena O, Baietto G, Parini S, Boldorini R, Giachino D, Papotti M, Scagliotti GV, Migliore E, Mirabelli D, Moro L, Magnani C, Ferrante D, Matullo G, Dianzani I. Malignant pleural mesothelioma: Germline variants in DNA repair genes may steer tailored treatment. Eur J Cancer 2022; 163:44-54. [PMID: 35032816 DOI: 10.1016/j.ejca.2021.12.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 11/25/2021] [Accepted: 12/19/2021] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Malignant pleural mesothelioma (MPM) is a tumour associated with asbestos exposure. Approximately, 10% of patients with MPM carry a germline pathogenic variant (PV), mostly in DNA repair genes, suggesting the occurrence of inherited predispositions. AIM This article aimed to 1) search for new predisposing genes and assess the prevalence of PVs in DNA repair genes, by next-generation sequencing (NGS) analysis of germline DNA from 113 unselected patients with MPM and 2) evaluate whether these patients could be sensitive to tailored treatments. METHODS NGS was performed using a custom panel of 107 cancer-predisposing genes. To investigate the response to selected drugs in conditions of DNA repair insufficiency, we created a three-dimensional-MPM cell model that had a defect in ataxia telangiectasia mutated (ATM), the master regulator of DNA repair. RESULTS We identified PVs in approximately 7% of patients with MPM (8/113) and a new PV in BAP1 in a further patient with familial MPM. Most of these PVs were in genes involved or supposedly involved in DNA repair (BRCA1, BRIP1, CHEK2, SLX4, FLCN and BAP1). In vitro studies showed apoptosis induction in ATM-silenced/inhibited MPM spheroids treated with an enhancer of zeste homologue 2 inhibitor (tazemetostat). CONCLUSIONS Overall these data suggest that patients with MPM and DNA repair insufficiency may benefit from this treatment, which induces synthetic lethality.
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Affiliation(s)
- Marika Sculco
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy
| | - Marta La Vecchia
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy
| | - Anna Aspesi
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy
| | - Giulia Pinton
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Novara, Italy
| | - Michela G Clavenna
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy
| | | | | | - Federica Grosso
- Mesothelioma Unit, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Roberta Libener
- Department of Integrated Activities Research and Innovation, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Alberto Muzio
- Division of Medical Oncology, Ospedale Santo Spirito, Casale Monferrato (Alessandria), Italy
| | - Ottavio Rena
- Thoracic Surgery Unit, AOU Maggiore della Carità, Novara, Italy
| | - Guido Baietto
- Thoracic Surgery Unit, AOU Maggiore della Carità, Novara, Italy
| | - Sara Parini
- Thoracic Surgery Unit, AOU Maggiore della Carità, Novara, Italy
| | - Renzo Boldorini
- Department of Health Sciences, Section of Pathological Anatomy, Università del Piemonte Orientale, Novara, Italy
| | - Daniela Giachino
- Medical Genetics Unit, Department of Clinical and Biological Sciences, Università di Torino, AOU S. Luigi Gonzaga, Orbassano, (Torino), Italy
| | | | - Giorgio V Scagliotti
- Department of Oncology, Università di Torino, AOU S. Luigi Gonzaga, Orbassano, Torino, Italy
| | - Enrica Migliore
- Unit of Cancer Epidemiology, CPO-Piemonte and Università di Torino, Italy
| | - Dario Mirabelli
- Unit of Cancer Epidemiology, CPO-Piemonte and Università di Torino, Italy; Interdepartmental Center for Studies on Asbestos and Other Toxic Particulates "G. Scansetti", Università di Torino, Italy
| | - Laura Moro
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Novara, Italy
| | - Corrado Magnani
- Department of Translational Medicine, Unit of Medical Statistics, Università del Piemonte Orientale and Cancer Epidemiology, CPO Piemonte, Novara, Italy
| | - Daniela Ferrante
- Department of Translational Medicine, Unit of Medical Statistics, Università del Piemonte Orientale and Cancer Epidemiology, CPO Piemonte, Novara, Italy
| | - Giuseppe Matullo
- Department of Medical Sciences, Università di Torino, Italy; Interdepartmental Center for Studies on Asbestos and Other Toxic Particulates "G. Scansetti", Università di Torino, Italy; Medical Genetics Unit, AOU Città Della Salute e della Scienza di Torino, Italy.
| | - Irma Dianzani
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy; Interdepartmental Center for Studies on Asbestos and Other Toxic Particulates "G. Scansetti", Università di Torino, Italy.
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