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Nakase Y, Hamada A, Obayashi F, Kitamura N, Hata T, Yamamoto T, Okamoto T. Establishment of induced pluripotent stem cells derived from patients and healthy siblings of a nevoid basal cell carcinoma syndrome family. In Vitro Cell Dev Biol Anim 2023; 59:395-400. [PMID: 37460876 PMCID: PMC10374668 DOI: 10.1007/s11626-023-00778-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 06/06/2023] [Indexed: 07/29/2023]
Abstract
It is known that a nevoid basal cell carcinoma syndrome (NBCCS) is characterized by a combination of developmental abnormalities and a predisposition to form various tumors. Although it is possible to create disease models via gene editing, there are significant potential problems with this approach such as off-target mutations and differences in SNPs. On the other hand, since disease families share common SNPs, research using iPSCs derived from both patients and healthy siblings of the same disease family is very important. Thus, establishment of induced pluripotent stem cells derived from patients and healthy siblings of the same NBCCS family will be of great importance to study the etiology of this disease and to develop therapeutics. In this study, we generated hiPSCs using peripheral blood mononuclear cells derived from the patients and healthy siblings of familial NBCCS with the novel mutation in PTCH1_c.3298_3299insAAG in the feeder- and serum-free culture conditions using SeVdp. In addition, disease-specific hiPSCs such as those expressing the PTCH1_c.3298_3299insAAG mutation could be powerful tools for revealing the genotype-phenotype relationship and pathogenicity of NBCCS.
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Affiliation(s)
- Yoji Nakase
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3, Kasumi, Minami-Ku, Hiroshima-City, Hiroshima, 734-8553, Japan
| | - Atsuko Hamada
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3, Kasumi, Minami-Ku, Hiroshima-City, Hiroshima, 734-8553, Japan.
| | - Fumitaka Obayashi
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3, Kasumi, Minami-Ku, Hiroshima-City, Hiroshima, 734-8553, Japan
| | - Naoya Kitamura
- Department of Oral and Maxillofacial Surgery, Kochi Medical School, Kochi University, Kochi, Japan
| | - Tsuyoshi Hata
- Department of Oral Surgery, Kawasaki Medical School, Okayama, Japan
- Present affiliation: Kondo Dental Clinic, Medical Corporation Mutsumikai, Okayama, Japan
| | - Tetsuya Yamamoto
- Department of Oral and Maxillofacial Surgery, Kochi Medical School, Kochi University, Kochi, Japan
| | - Tetsuji Okamoto
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3, Kasumi, Minami-Ku, Hiroshima-City, Hiroshima, 734-8553, Japan
- School of Medical Sciences, University of East Asia, Shimonoseki, Japan
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2
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Spadari F, Pulicari F, Pellegrini M, Scribante A, Garagiola U. Multidisciplinary approach to Gorlin-Goltz syndrome: from diagnosis to surgical treatment of jawbones. Maxillofac Plast Reconstr Surg 2022; 44:25. [PMID: 35843976 PMCID: PMC9288940 DOI: 10.1186/s40902-022-00355-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 07/06/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Gorlin syndrome, also known as Gorlin-Goltz syndrome (GGS) or basal cell nevus syndrome (BCNS) or nevoid basal cell carcinoma syndrome (NBCCS), is an autosomal dominant familial cancer syndrome. It is characterized by the presence of numerous basal cell carcinomas (BCCs), along with skeletal, ophthalmic, and neurological abnormalities. It is essential to anticipate the diagnosis by identifying the pathology through the available diagnostic tests, clinical signs, and radiological manifestations, setting up an adequate treatment plan. MAIN BODY In the first part, we searched recent databases including MEDLINE (PubMed), Embase, and the Cochrane Library by analyzing the etiopathogenesis of the disease, identifying the genetic alterations underlying them. Subsequently, we defined what are, to date, the major and minor clinical diagnostic criteria, the possible genetic tests to be performed, and the pathologies with which to perform differential diagnosis. The radiological investigations were reviewed based on the most recent literature, and in the second part, we performed a review regarding the existing jawbone protocols, treating simple enucleation, enucleation with bone curettage in association or not with topical use of cytotoxic chemicals, and "en bloc" resection followed by possible bone reconstruction, marsupialization, decompression, and cryotherapy. CONCLUSION To promote the most efficient and accurate management of GGS, this article summarizes the clinical features of the disease, pathogenesis, diagnostic criteria, differential diagnosis, and surgical protocols. To arrive at an early diagnosis of the syndrome, it would be advisable to perform radiographic and clinical examinations from the young age of the patient. The management of the patient with GGS requires a multidisciplinary approach ensuring an adequate quality of life and effective treatment of symptoms.
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Affiliation(s)
- Francesco Spadari
- Department of Biomedical Surgical and Dental Sciences, Maxillo-Facial and Odontostomatology Unit, School of Orthodontics, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - Federica Pulicari
- Department of Biomedical Surgical and Dental Sciences, Maxillo-Facial and Odontostomatology Unit, School of Orthodontics, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - Matteo Pellegrini
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences Section of Dentistry, University of Pavia, Pavia, Italy
| | - Andrea Scribante
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences Section of Dentistry, University of Pavia, Pavia, Italy
| | - Umberto Garagiola
- Department of Biomedical Surgical and Dental Sciences, Maxillo-Facial and Odontostomatology Unit, School of Orthodontics, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
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Nagao K, Kato C, Ikemoto Y, Motojima T, Fujii K, Umezawa A, Miyashita T. PTCH1-null induced pluripotent stem cells exclusively differentiate into immature ectodermal cells with large areas of medulloblastoma-like tissue. Discov Oncol 2022; 13:36. [PMID: 35618979 PMCID: PMC9135936 DOI: 10.1007/s12672-022-00498-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/18/2022] [Indexed: 11/24/2022] Open
Abstract
Nevoid basal cell carcinoma syndrome (NBCCS) is an autosomal dominant disorder with an increased incidence of tumors, such as basal cell carcinomas and medulloblastomas. The PTCH1 gene, responsible for NBCCS, suppresses the hedgehog signaling pathway, which is recognized as one of the important pathways in tumorigenesis and, thus, is a therapeutic target in cancer. In the present study, we generated PTCH1-/- induced pluripotent stem cells (iPSCs) from NBCCS patient-derived iPSCs (PTCH1+/-) by gene editing. The proliferation of PTCH1-/- iPSCs was accelerated due to the activation of the hedgehog signaling pathway. When PTCH1-/- iPSCs were subcutaneously injected into immunodeficient mice, the resulting teratomas almost exclusively contained immature ectodermal lineage cells expressing medulloblastoma markers, and the percentages of the area occupied by medulloblastoma-like tissue were larger in PTCH1-/- teratomas than in PTCH1+/- teratomas. In contrast, in PTCH1+/+ teratomas, medulloblastoma-like tissue positive for all of these medulloblastoma markers was not observed. The present results indicate the importance of PTCH1 in medulloblastoma formation and the suitability of these gene-edited iPSCs and PTCH1-/- teratomas as models for the formation of tumors, such as medulloblastomas and Hh-related tumors.
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Affiliation(s)
- Kazuaki Nagao
- Department of Molecular Genetics, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Minami-ku, Sagamihara, 252-0374, Japan.
| | - Chise Kato
- Department of Molecular Genetics, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Minami-ku, Sagamihara, 252-0374, Japan
| | - Yu Ikemoto
- Department of Molecular Genetics, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Minami-ku, Sagamihara, 252-0374, Japan
- Department of Reproductive Biology, National Center for Child Health and Development, Tokyo, 157-8535, Japan
| | - Toshino Motojima
- Department of Pediatrics, Motojima General Hospital, Gunnma, 373-0033, Japan
| | - Katsunori Fujii
- Department of Pediatrics, Graduate School of Medicine, International University of Health and Welfare, Chiba, 286-8686, Japan
| | - Akihiro Umezawa
- Department of Reproductive Biology, National Center for Child Health and Development, Tokyo, 157-8535, Japan
| | - Toshiyuki Miyashita
- Department of Molecular Genetics, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Minami-ku, Sagamihara, 252-0374, Japan
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4
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Proposed criteria for nevoid basal cell carcinoma syndrome in children assessed using statistical optimization. Sci Rep 2021; 11:19791. [PMID: 34611197 PMCID: PMC8492651 DOI: 10.1038/s41598-021-98752-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 09/07/2021] [Indexed: 11/29/2022] Open
Abstract
Nevoid basal cell carcinoma syndrome (NBCCS) is a tumor predisposition condition, the cardinal features of which emerge in adolescence or adulthood. Using statistical optimization, this study proposes NBCCS criteria with improved sensitivity in children less than 18 years of age. Earlier detection may lead to improved surveillance and prevention of sequelae. A survey eliciting medical history was completed by, or on behalf of, individuals with NBCCS. Based on these findings, criteria for suspicion of NBCCS in children were suggested using information from a Bernoulli naïve Bayes classifier relying on the human phenotype ontology. The sensitivity and specificity of the existing and proposed diagnostic criteria were also assessed. Participants (n = 48) reported their first signs of NBCCS appeared at a median age of 8 months, but by our retrospective analysis, they did not fulfill the current diagnostic criteria until a median age of 7 years. This study delineates the early-onset features of NBCCS and proposes criteria that should prompt consideration of NBCCS. Additionally, we demonstrate a method for quantitatively assessing the utility of diagnostic criteria for genetic disorders.
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Molecular alterations in retinoblastoma beyond RB1. Exp Eye Res 2021; 211:108753. [PMID: 34478740 DOI: 10.1016/j.exer.2021.108753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 08/29/2021] [Indexed: 12/24/2022]
Abstract
Retinoblastoma is the most common malignant ocular tumor in children. Although RB1 alterations are most frequently involved in the etiology of retinoblastoma, candidate driver events and somatic alterations leading to cell transformation, tumor onset and progression remain poorly understood. In this study, we identified novel genomic alterations in tumors with a panel of 160 genes. Sanger sequencing and Multiplex Ligation-dependent Probe Amplification (MLPA) were initially performed for identifying patients without apparent RB1 alterations in blood DNA. Subsequently, NGS analyses of 24 paired (blood/tumor) samples of these patients were carried out for identifying somatic mutations and copy number variation in RB1 and other 159 genes. One novel pathogenic RB1 mutation and seven novel VUS were identified as well as 90 novel pathogenic mutations in 61 other genes. Twenty-three genes appeared exclusively mutated in tumors without altered RB1 alleles and three frequently affected biological pathways while five other tumors did not show pathogenic RB1 alterations or SNV/indels in 159 other genes. Curiously, deletion of GATA2, AKT1, ARID1A, DNMT3A, MAP2K2, MEN1, MTOR, PTCH1 and SUFU (in homo- or heterozygosity) were exclusively found in these tumors when compared to those with any pathogenic alterations, probably indicating genes that might be essential for the development of retinoblastoma regardless of a functional RB1. Identification of genes associated with retinoblastoma will contribute to understanding presently unknown aspects of this malignancy, which might be essential for its initiation and progression, as well as providing valuable molecular markers.
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6
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Gorlin syndrome-induced pluripotent stem cells form medulloblastoma with loss of heterozygosity in PTCH1. Aging (Albany NY) 2020; 12:9935-9947. [PMID: 32436863 PMCID: PMC7288908 DOI: 10.18632/aging.103258] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 03/30/2020] [Indexed: 02/06/2023]
Abstract
Gorlin syndrome is a rare autosomal dominant hereditary disease with a high incidence of tumors such as basal cell carcinoma and medulloblastoma. Disease-specific induced pluripotent stem cells (iPSCs) and an animal model have been used to analyze disease pathogenesis. In this study, we generated iPSCs derived from fibroblasts of four patients with Gorlin syndrome (Gln-iPSCs) with heterozygous mutations of the PTCH1 gene. Gln-iPSCs from the four patients developed into medulloblastoma, a manifestation of Gorlin syndrome, in 100% (four out of four), of teratomas after implantation into immunodeficient mice, but none (0/584) of the other iPSC-teratomas did so. One of the medulloblastomas showed loss of heterozygosity in the PTCH1 gene while the benign teratoma, i.e. the non-medulloblastoma portion, did not, indicating a close clinical correlation between tumorigenesis in Gorlin syndrome patients and Gln-iPSCs.
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7
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Yamada H, Shimura M, Takahashi H, Nara S, Morishima Y, Go S, Miyashita T, Numabe H, Kawashima H. A familial case of overgrowth syndrome caused by a 9q22.3 microdeletion in a mother and daughter. Eur J Med Genet 2020; 63:103872. [PMID: 32028043 DOI: 10.1016/j.ejmg.2020.103872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 11/27/2019] [Accepted: 02/01/2020] [Indexed: 01/23/2023]
Abstract
Microdeletions in the 9q22.3 chromosomal region can cause macrosomia with characteristic features, including prenatal-onset overgrowth, metopic craniosynostosis, hydrocephalus, developmental delay, and intellectual disability, in addition to manifestations of nevoid basal cell carcinoma syndrome (NBCCS). Haploinsufficiency of PTCH1 may be responsible for accelerated overgrowth, but the mechanism of macrosomia remains to be elucidated. We report a familial case with a 9q22.3 microdeletion, manifesting with prenatal-onset overgrowth in a mother and post-natal overgrowth in her daughter. Although both were clinically diagnosed with NBCCS, they had characteristic features of 9q22.3 microdeletion, especially the daughter. Microarray comparative genomic hybridization analysis revealed a 4.0 Mb deletion of chromosome 9q22.3 in both individuals. Among the 11 reported patients of overgrowth and/or macrosomia, a 550 Kb region encompassing PTCH1, C9orf3, FANCC, and 5 miRNAs is the most commonly deleted region. The let-7 family miRNAs, which are involved in diverse cellular processes including growth and tumor processes, were identified in the deleted regions in 10 of 11 patients. Characteristic features of 9q22.3 microdeletion might be associated with decreased expression of let-7.
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Affiliation(s)
- Hikari Yamada
- Department of Pediatrics, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuo, Ami-machi, Inashiki-gun, Ibaraki, 300-0395, Japan
| | - Masaru Shimura
- Department of Pediatrics, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuo, Ami-machi, Inashiki-gun, Ibaraki, 300-0395, Japan.
| | - Hidekuni Takahashi
- Department of Pediatrics, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuo, Ami-machi, Inashiki-gun, Ibaraki, 300-0395, Japan
| | - Shonosuke Nara
- Department of Pediatrics and Adolescent Medicine, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
| | - Yasuyuki Morishima
- Clinical Genetics Center, Tokyo Medical University Hospital, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
| | - Soken Go
- Department of Pediatrics, Tokyo Medical University Ibaraki Medical Center, 3-20-1 Chuo, Ami-machi, Inashiki-gun, Ibaraki, 300-0395, Japan
| | - Toshiyuki Miyashita
- Department of Molecular Genetics, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara-shi, Kanagawa, 252-0374, Japan
| | - Hironao Numabe
- Clinical Genetics Center, Tokyo Medical University Hospital, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
| | - Hisashi Kawashima
- Department of Pediatrics and Adolescent Medicine, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
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8
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CNspector: a web-based tool for visualisation and clinical diagnosis of copy number variation from next generation sequencing. Sci Rep 2019; 9:6426. [PMID: 31015508 PMCID: PMC6478945 DOI: 10.1038/s41598-019-42858-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 04/08/2019] [Indexed: 11/23/2022] Open
Abstract
Next Generation Sequencing is now routinely used in the practice of diagnostic pathology to detect clinically relevant somatic and germline sequence variations in patient samples. However, clinical assessment of copy number variations (CNVs) and large-scale structural variations (SVs) is still challenging. While tools exist to estimate both, their results are typically presented separately in tables or static plots which can be difficult to read and are unable to show the context needed for clinical interpretation and reporting. We have addressed this problem with CNspector, a multi-scale interactive browser that shows CNVs in the context of other relevant genomic features to enable fast and effective clinical reporting. We illustrate the utility of CNspector at different genomic scales across a variety of sample types in a range of case studies. We show how CNspector can be used for diagnosis and reporting of exon-level deletions, focal gene-level amplifications, chromosome and chromosome arm level amplifications/deletions and in complex genomic rearrangements. CNspector is a web-based clinical variant browser tailored to the clinical application of next generation sequencing for CNV assessment. We have demonstrated the utility of this interactive software in typical applications across a range of tissue types and disease contexts encountered in the context of diagnostic pathology. CNspector is written in R and the source code is available for download under the GPL3 Licence from https://github.com/PapenfussLab/CNspector.
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9
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Matsudate Y, Naruto T, Hayashi Y, Minami M, Tohyama M, Yokota K, Yamada D, Imoto I, Kubo Y. Targeted exome sequencing and chromosomal microarray for the molecular diagnosis of nevoid basal cell carcinoma syndrome. J Dermatol Sci 2017; 86:206-211. [DOI: 10.1016/j.jdermsci.2017.02.282] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 02/22/2017] [Indexed: 11/15/2022]
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10
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Hong Y, Zhang J, Zhang H, Li X, Qu J, Zhai J, Zhang L, Chen F, Li T. Heterozygous PTCH1 Mutations Impact the Bone Metabolism in Patients With Nevoid Basal Cell Carcinoma Syndrome Likely by Regulating SPARC Expression. J Bone Miner Res 2016; 31:1413-28. [PMID: 26890308 DOI: 10.1002/jbmr.2815] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 01/23/2016] [Accepted: 02/13/2016] [Indexed: 01/18/2023]
Abstract
Nevoid basal cell carcinoma syndrome (NBCCS) is an autosomal dominant disorder characterized by bone and skin abnormalities and a predisposition to various tumors. Keratocystic odontogenic tumors (KCOTs), which are common tumors of the jaw that cause extensive damage to the jawbone, are usually accompanied with NBCCS. Germline PTCH1 mutations in NBCCS tumorigenesis have been frequently studied; however, little is known regarding the pathogenesis of bone abnormalities in this disease. This study sought to investigate the mechanism underlying heterozygous PTCH1 mutation-mediated abnormal bone metabolism in patients with NBCCS. Stromal cells were isolated from the fibrous capsules of patients with NBCCS-associated or non-syndromic keratocystic odontogenic tumors and non-syndromic tumor stromal cells without PTCH1 mutations served as controls. Germline PTCH1 heterozygous mutations were confirmed in all NBCCS samples and differential protein expression was identified using tandem mass tag-labeled proteomics analysis. Our findings revealed that osteonectin/SPARC expression was significantly downregulated in syndromic stromal cells compared with non-syndromic stromal cells. SPARC expression was even lower in stromal cells carrying PTCH1 protein truncation mutations. PTCH1 siRNA transfection demonstrated that SPARC downregulation correlates with decreased PTCH1 expression. Furthermore, exogenous SPARC promoted osteogenic differentiation of syndromic stromal cells with enhanced development of calcium nodules. In addition, bone mineral density tests showed that patients with NBCCS exhibit weak bone mass compared with sex- and age-matched controls. This study indicates that germline PTCH1 heterozygous mutations play a major role in bone metabolism in patients with NBCCS, in particular in those with PTCH1 protein truncation mutations. SPARC may represent an important downstream modulator of PTCH1 mediation of bone metabolism. Thus, bone mineral density monitoring is critical for patients with NBCCS for prevention of osteoporosis. In addition, surgical procedures on syndromic-associated KCOTs should be performed with consideration of the weaker bone mass in such patients. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Yingying Hong
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jianyun Zhang
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Heyu Zhang
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xuefen Li
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jiafei Qu
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jiemei Zhai
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Lei Zhang
- Department of Oral Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Feng Chen
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Tiejun Li
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China
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Morita KI, Naruto T, Tanimoto K, Yasukawa C, Oikawa Y, Masuda K, Imoto I, Inazawa J, Omura K, Harada H. Simultaneous Detection of Both Single Nucleotide Variations and Copy Number Alterations by Next-Generation Sequencing in Gorlin Syndrome. PLoS One 2015; 10:e0140480. [PMID: 26544948 PMCID: PMC4636311 DOI: 10.1371/journal.pone.0140480] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 09/25/2015] [Indexed: 11/18/2022] Open
Abstract
Gorlin syndrome (GS) is an autosomal dominant disorder that predisposes affected individuals to developmental defects and tumorigenesis, and caused mainly by heterozygous germline PTCH1 mutations. Despite exhaustive analysis, PTCH1 mutations are often unidentifiable in some patients; the failure to detect mutations is presumably because of mutations occurred in other causative genes or outside of analyzed regions of PTCH1, or copy number alterations (CNAs). In this study, we subjected a cohort of GS-affected individuals from six unrelated families to next-generation sequencing (NGS) analysis for the combined screening of causative alterations in Hedgehog signaling pathway-related genes. Specific single nucleotide variations (SNVs) of PTCH1 causing inferred amino acid changes were identified in four families (seven affected individuals), whereas CNAs within or around PTCH1 were found in two families in whom possible causative SNVs were not detected. Through a targeted resequencing of all coding exons, as well as simultaneous evaluation of copy number status using the alignment map files obtained via NGS, we found that GS phenotypes could be explained by PTCH1 mutations or deletions in all affected patients. Because it is advisable to evaluate CNAs of candidate causative genes in point mutation-negative cases, NGS methodology appears to be useful for improving molecular diagnosis through the simultaneous detection of both SNVs and CNAs in the targeted genes/regions.
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Affiliation(s)
- Kei-ichi Morita
- Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Bioresource Research Center, Tokyo Medical and Dental University, Tokyo, Japan.,Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takuya Naruto
- Department of Stress Science, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kousuke Tanimoto
- Bioresource Research Center, Tokyo Medical and Dental University, Tokyo, Japan.,Genome Laboratory, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Molecular Cytogenetics, Medical Research Institute and School of Biomedical Science, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Chisato Yasukawa
- Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yu Oikawa
- Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kiyoshi Masuda
- Department of Human Genetics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Issei Imoto
- Department of Human Genetics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Johji Inazawa
- Bioresource Research Center, Tokyo Medical and Dental University, Tokyo, Japan.,Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Molecular Cytogenetics, Medical Research Institute and School of Biomedical Science, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ken Omura
- Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan.,Oral Cancer Center, Tokyo General Hospital, Tokyo, Japan
| | - Hiroyuki Harada
- Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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12
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MacDonald DS. A systematic review of the literature of nevoid basal cell carcinoma syndrome affecting East Asians and North Europeans. Oral Surg Oral Med Oral Pathol Oral Radiol 2015; 120:396-407. [PMID: 26297395 DOI: 10.1016/j.oooo.2015.05.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 05/06/2015] [Accepted: 05/29/2015] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To compare, by systematic review, North European and East Asian consecutive case series of nevoid basal cell carcinoma syndrome (NBCCS). STUDY DESIGN A systematic review of the literature was performed for all consecutive case series of NBCCS, which included keratocystic odontgenic tumors (KCOTs) arising in North European and East Asian communities. The clinical and radiologically apparent features were identified and synthesized, and a meta-analysis was performed. RESULTS East Asian reports were significantly more "proband only" compared with North European reports. Significant differences between these 2 communities were observed for 5 of the 6 major features and 11 of the 27 minor features. With regard to the major NBCCS features, the North Europeans displayed significantly more frequent basal cell carcinomas, calcified falx cerebri, palmar and plantar pits, and a family history, whereas the East Asians displayed KCOTs significantly more frequently. With regard to minor features, East Asians displayed significantly more frequent cleft lips and palates and hypertelorism. CONCLUSIONS East Asians displayed multiple KCOTs and cleft lips and palates more frequently compared with North Europeans.
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Affiliation(s)
- David S MacDonald
- University of British Columbia, Chairman of the Division of Oral & Maxillofacial Radiology, Faculty of Dentistry, University of British Columbia, Vancouver, Canada.
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13
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Fujii K, Miyashita T. Gorlin syndrome (nevoid basal cell carcinoma syndrome): update and literature review. Pediatr Int 2014; 56:667-74. [PMID: 25131638 DOI: 10.1111/ped.12461] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/28/2014] [Accepted: 07/15/2014] [Indexed: 02/03/2023]
Abstract
Gorlin syndrome, also called nevoid basal cell carcinoma syndrome, is an autosomal dominant neurocutaneous disease characterized by developmental anomalies such as palmar pits and rib anomaly, and tumorigenesis such as medulloblastoma and basal cell carcinoma. This syndrome is mainly caused by a mutation of PTCH1, a human homologue of Drosophila patched, including frameshift, missense, or nonsense mutations. Genotype-phenotype correlation has not been established. PTCH1 is a member of hedgehog signaling, which is a highly conserved pathway in vertebrates, composed of hedgehog, SMO, and GLI proteins as well as PTCH1. Given that hedgehog signaling regulates cell growth and development, disorder of this pathway gives rise to not only developmental anomalies but also diverse tumors such as those seen in Gorlin syndrome. We recently reported, for the first time, a nationwide survey of Gorlin syndrome in Japan, noting that the frequency was 1/235,800 in the Japanese population, and that the frequency of basal cell carcinomas was significantly lower in Japan than in the USA and Europe, suggesting that ethnicity and genetic background contribute to these differences. Given that many clinical trials using newly discovered molecular inhibitors are still ongoing, these agents should become the new therapeutic options for hedgehog pathway-dependent tumors in patients with or without Gorlin syndrome.
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Affiliation(s)
- Katsunori Fujii
- Department of Pediatrics, Chiba University Graduate School of Medicine, Chiba
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Abstract
Nevoid basal cell carcinoma syndrome (NBCCS) is an autosomal dominant disorder characterized by developmental defects and tumorigenesis. The gene responsible for NBCCS is PTCH1, encoding a receptor for the secreted protein, sonic hedgehog. Recently, a Chinese family with NBCCS carrying a missense mutation in PTCH2, a close homolog of PTCH1, was reported. However, the pathological significance of missense mutations should be discussed cautiously. Here, we report a 13-year-old girl diagnosed with NBCCS based on multiple keratocystic odontogenic tumors and rib anomalies carrying a frameshift mutation in the PTCH2 gene (c.1172_1173delCT). Considering the deleterious nature of the frameshift mutation, our study further confirmed a causative role for the PTCH2 mutation in NBCCS. The absence of typical phenotypes in this case such as palmar/plantar pits, macrocephaly, falx calcification, hypertelorism and coarse face, together with previously reported cases, suggested that individuals with NBCCS carrying a PTCH2 mutation may have a milder phenotype than those with a PTCH1 mutation.
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Suzuki M, Nagao K, Hatsuse H, Sasaki R, Saito K, Fujii K, Miyashita T. Molecular pathogenesis of keratocystic odontogenic tumors developing in nevoid basal cell carcinoma syndrome. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 116:348-53. [DOI: 10.1016/j.oooo.2013.06.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/12/2013] [Accepted: 06/14/2013] [Indexed: 11/30/2022]
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Kosaki R, Nagao K, Kameyama K, Suzuki M, Fujii K, Miyashita T. Heterozygous tandem duplication within the PTCH1 gene results in nevoid basal cell carcinoma syndrome. Am J Med Genet A 2012; 158A:1724-8. [PMID: 22711650 DOI: 10.1002/ajmg.a.35412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Nevoid basal cell carcinoma syndrome (NBCCS) is an autosomal dominant disorder characterized by developmental defects and tumorigenesis. The gene responsible for NBCCS is PTCH1. Using multiplex ligation-dependent probe amplification, we identified a heterozygous tandem duplication within the PTCH1 gene in a 14-year-old girl with typical NBCCS. We have sequenced the chromosomal breakpoint and determined the duplication as tandem in orientation and 18,814 bp in size. The fusion occurred between non-repetitive elements with an overlap of three nucleotides. The duplicated segment began at exon 10 and ended at intron 17. Subsequent analysis of cDNA from the patient showed the expression of mutant mRNA species containing a duplicated segment spanning exons 11-17, resulting in a frameshift and premature stop codon. This is the first reported case of NBCCS due to a tandem multiexon duplication of PTCH1 representing a novel mechanism leading to the NBCCS phenotype, and highlights the importance of copy number analysis as an adjunct to exon sequencing in identifying infrequent mutational events in PTCH1.
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Affiliation(s)
- Rika Kosaki
- Division of Medical Genetics, National Center for Child Health and Development, Tokyo, Japan
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Coca-Pelaz A, Llorente-Pendás JL, García-Martínez J, Vivanco-Allende B, Balbín M, Suárez C, Hermsen M. Medullary thyroid carcinoma and 2q37 deletion in a patient with nevoid basal cell carcinoma syndrome: clinical description and genetic analysis. Head Neck 2012; 35:E147-52. [PMID: 22319002 DOI: 10.1002/hed.22000] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2011] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Nevoid basal cell carcinoma syndrome (NBCCS) is a rare, inheritable, multisystem disorder characterized by numerous basal cell carcinomas (BCCs), maxillary keratocyst, and musculoskeletal malformations. Occasionally, it is associated with malignancies like rhabdomyoma, melanoma, and sinonasal undifferentiated carcinoma, to name a few. METHODS A patient presented with NBCCS with a medullary thyroid carcinoma. Clinical, surgical details, and germline genetic analysis are herein described. RESULTS A 32-year-old woman was referred to our department with suspicion of medullary thyroid carcinoma, which was confirmed by histopathological examination. The patient was diagnosed as also having NBCCS. Germline mutation analysis indicated wild-type genes PTCH1 and RET. DNA copy number analysis by high resolution microarray comparative genomic hybridization (CGH) revealed a small interstitial loss at chromosomal band 2q37.3. CONCLUSION To our knowledge, this is the first described patient with NBCCS carrying a medullary thyroid carcinoma and a 2q37 deletion, which confirms that this syndrome can be associated with many different malignancies.
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Affiliation(s)
- Andrés Coca-Pelaz
- Department of Otolaryngology, Instituto Universitario de Oncología del Principado de Asturias, Hospital Universitario Central de Asturias, Spain.
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Endo M, Fujii K, Sugita K, Saito K, Kohno Y, Miyashita T. Nationwide survey of nevoid basal cell carcinoma syndrome in Japan revealing the low frequency of basal cell carcinoma. Am J Med Genet A 2012; 158A:351-7. [DOI: 10.1002/ajmg.a.34421] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Accepted: 11/15/2011] [Indexed: 11/10/2022]
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