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Liu H, Han X, Chu S, Ma W, Ding W, Li J, Jiang Y. Coexisting PTPN11 and TNNT2 mutations in noonan syndrome with multiple lentigines. QJM 2024; 117:460-461. [PMID: 38366647 DOI: 10.1093/qjmed/hcae029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Indexed: 02/18/2024] Open
Affiliation(s)
- H Liu
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - X Han
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - S Chu
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - W Ma
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - W Ding
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - J Li
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Y Jiang
- Department of Cardiology, Peking University First Hospital, Beijing, China
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2
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Zhang JC, Liu HQ. Abnormal development of the fetal nervous system in a gestational woman with LEOPARD syndrome. Asian J Surg 2024; 47:2067-2068. [PMID: 38245422 DOI: 10.1016/j.asjsur.2024.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/05/2024] [Indexed: 01/22/2024] Open
Affiliation(s)
- Jin-Cheng Zhang
- Department of Gynecology and Obstetrics, West China Second Hospital, Sichuan University, Chengdu, People's Republic of China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, People's Republic of China
| | - Hong-Qian Liu
- Department of Gynecology and Obstetrics, West China Second Hospital, Sichuan University, Chengdu, People's Republic of China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, People's Republic of China.
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3
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Martinez-Molina M, Fabregat-Pratdepadua M, Bielsa Marsol I. Noonan Syndrome With Multiple Lentigines. ACTAS DERMO-SIFILIOGRAFICAS 2024; 115:414-416. [PMID: 36273552 DOI: 10.1016/j.ad.2022.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/16/2022] [Accepted: 05/22/2022] [Indexed: 12/12/2022] Open
Affiliation(s)
- M Martinez-Molina
- Servicio de Dermatología, Hospital Universitari Germans Trias i Pujol, Universidad Autónoma de Barcelona, Barcelona, España.
| | - M Fabregat-Pratdepadua
- Servicio de Dermatología, Hospital Universitari Germans Trias i Pujol, Universidad Autónoma de Barcelona, Barcelona, España
| | - I Bielsa Marsol
- Servicio de Dermatología, Hospital Universitari Germans Trias i Pujol, Universidad Autónoma de Barcelona, Barcelona, España
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4
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Martinez-Molina M, Fabregat-Pratdepadua M, Bielsa Marsol I. [Translated article] Noonan Syndrome With Multiple Lentigines. ACTAS DERMO-SIFILIOGRAFICAS 2024; 115:T414-T416. [PMID: 38325537 DOI: 10.1016/j.ad.2022.05.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/22/2022] [Indexed: 02/09/2024] Open
Affiliation(s)
- M Martinez-Molina
- Servicio de Dermatología, Hospital Universitari Germans Trias i Pujol. Universidad Autónoma de Barcelona, Barcelona, Spain.
| | - M Fabregat-Pratdepadua
- Servicio de Dermatología, Hospital Universitari Germans Trias i Pujol. Universidad Autónoma de Barcelona, Barcelona, Spain
| | - I Bielsa Marsol
- Servicio de Dermatología, Hospital Universitari Germans Trias i Pujol. Universidad Autónoma de Barcelona, Barcelona, Spain
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5
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Palacios-Diaz RD, Pozuelo-Ruiz M, De Unamuno-Bustos B, Llavador-Ros M, Botella-Estrada R. Melanoma and LEOPARD Syndrome: Understanding the Role of PTPN11 Mutations in Melanomagenesis. Acta Derm Venereol 2024; 104:adv14720. [PMID: 38189222 PMCID: PMC10789164 DOI: 10.2340/actadv.v104.14720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/25/2023] [Indexed: 01/09/2024] Open
Abstract
Abstract is missing (Short communication)
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Affiliation(s)
| | - Mónica Pozuelo-Ruiz
- Dermatology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
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6
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Sormani L, Montaudie H, Blot L, Heim M, Cardot Leccia N, Mhaidly R, Verhoeyen E, Regazzetti C, Nottet N, Cheli Y, De Donatis GM, Dabert Gay AS, Debayle D, Taquin Martin H, Gesbert F, Rocchi S, Tulic MK, Passeron T. CLEC12B is a melanocytic gene regulating the color of the skin. J Invest Dermatol 2021; 142:1858-1868.e8. [PMID: 34896119 DOI: 10.1016/j.jid.2021.08.450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/13/2021] [Accepted: 08/01/2021] [Indexed: 11/19/2022]
Abstract
Pigmentation of the human skin is a complex process regulated by many genes. However, only a few have a profound impact on melanogenesis. Transcriptome analysis of pigmented skin compared to vitiligo skin devoid of melanocytes, allowed us to unravel CLEC12B as a melanocytic gene. We demonstrated that CLEC12B, a C-type lectin receptor, is highly expressed in melanocytes, and that its expression is decreased in dark skin compared to white skin. CLEC12B directly recruits and activates SHP-1 and SHP-2 through its ITIM domain and promotes CREB degradation, leading to downregulation of the downstream MITF pathway. CLEC12B ultimately controls melanin production and pigmentation in vitro and in a model of reconstructed human epidermis. The identification of CLEC12B in melanocyte demonstrates that C-type lectin receptors exert function beyond immunity and inflammation. It also provides insights in the understanding of the melanocyte biology and regulation of melanogenesis.
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Affiliation(s)
- Laura Sormani
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Henri Montaudie
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France; Department of Dermatology, Centre Hospitalier Universitaire de Nice, Université Côte d'Azur, Nice, France
| | - Lauriane Blot
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Marjorie Heim
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Nathalie Cardot Leccia
- Department of Pathology, Centre Hospitalier Universitaire de Nice, Université Côte d'Azur, Nice, France
| | - Rana Mhaidly
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Els Verhoeyen
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France; Centre International de Recherche en Infectioilogy (CIRI), Université de Lyon, INSERM U1111, ENS de Lyon, Lyon, France
| | - Claire Regazzetti
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Nicolas Nottet
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Yann Cheli
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Gian Marco De Donatis
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Anne Sophie Dabert Gay
- Physicochemical Characterization of Biomolecules (CAPABIO) Platform, Institut de pharmacologie moléculaire et cellulaire (IPMC), CNRS, Université Côte d'Azur, Sophia Antipolis, France
| | - Delphine Debayle
- Physicochemical Characterization of Biomolecules (CAPABIO) Platform, Institut de pharmacologie moléculaire et cellulaire (IPMC), CNRS, Université Côte d'Azur, Sophia Antipolis, France
| | - Hélène Taquin Martin
- Department of Dermatology, Centre Hospitalier Universitaire de Nice, Université Côte d'Azur, Nice, France
| | - Franck Gesbert
- University Paris-Sud, University Paris-Saclay. Institut Curie, PSL Research University, INSERM U1021, Normal and Pathological Development of Melanocytes, CNRS, UMR 3347, Orsay, France
| | - Stéphane Rocchi
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Meri K Tulic
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France
| | - Thierry Passeron
- INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Université Côte d'Azur, Nice, France; Department of Dermatology, Centre Hospitalier Universitaire de Nice, Université Côte d'Azur, Nice, France.
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7
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The First Vietnamese Patient of LEOPARD Syndrome due to a PTPN11 Mutation: A Case Report and Review of the Literature. Case Rep Genet 2021; 2021:8197435. [PMID: 34552798 PMCID: PMC8452451 DOI: 10.1155/2021/8197435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 09/03/2021] [Indexed: 11/17/2022] Open
Abstract
LEOPARD syndrome is a rare congenital anomaly that involves several organs. Patients with this syndrome develop multiple lentigines resembling a leopard's hide. LEOPARD is an acronym of the major features constituting the syndrome including lentigines, electrocardiographic conduction defects, ocular hypertelorism, pulmonary valve stenosis, anomalies of genitalia, retardation of growth, and deafness. The syndrome is rare, and only 200 cases have been reported yet worldwide. We present the case of an 8-year-old female patient who visited the Ho Chi Minh City Hospital of Dermato-Venereology because of multiple brownish-black "dots" on her face and body. On examination, she also showed abnormalities in the maxillofacial bones, vertebrae, shoulders, sternum, and teeth, as well as deaf-mutism and growth retardation, which are typical of LEOPARD syndrome. Genetic analysis revealed a PTPN11 gene mutation in this case. To the best of our knowledge, this is the first case of LEOPARD syndrome reported in Vietnam.
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Xu L, Zhou C, Pan R, Tang J, Wang J, Li B, Huang T, Duan S, Xu C. PTPN11 hypomethylation is associated with gastric cancer progression. Oncol Lett 2020; 19:1693-1700. [PMID: 32194661 PMCID: PMC7039138 DOI: 10.3892/ol.2020.11250] [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: 11/16/2018] [Accepted: 10/14/2019] [Indexed: 11/06/2022] Open
Abstract
Protein tyrosine phosphatase non-receptor type 11 (PTPN11) encodes the tyrosine phosphatase SHP-2 that is overexpressed in gastric cancer (GC). In the present study, the association of PTPN11 methylation levels with the incidence of GC and its correlation with SHP-2 overexpression were investigated. The methylation levels of PTPN11 in tumor and adjacent normal tissues of 112 GC patients were assessed by quantitative methylation specific PCR (qMSP). The Cancer Genome Atlas (TCGA) public database was used to analyze the association between PTPN11 methylation and PTPN11 expression. Survival analyses were conducted in order to evaluate the prognostic value of PTPN11 methylation for GC. The results of the qMSP analysis indicated that the methylation levels of PTPN11 in GC tumor tissues were significantly decreased compared with those noted in the normal adjacent tissues (mean with standard deviation: 40.91±26.33 vs. 51.99±37.37, P=0.007). An inverse correlation between PTPN11 methylation levels and PTPN11 mRNA expression levels (P=4×10-6, r=-0.237) was noted. Subgroup analyses indicated that the association of PTPN11 hypomethylation with the incidence of GC was specific to male subjects (P=0.015), heavy drinking patients (P=0.019), patients with poor tumor differentiation (P=0.010) and patients with tumor node and metastasis (TNM) stage III+IV (P=0.008). Kaplan-Meier analyses and log-rank test suggested that PTPN11 hypomethylation was not associated with GC patient overall survival (P=0.605) and recurrence (P=0.485), although it could predict the recurrence of GC patients up to and including 60 years (≤60, P=0.049). The results indicated that PTPN11 levels were hypomethylated in GC patients. TCGA data analysis suggested that PTPN11 hypomethylation could cause an upregulation in the transcription levels of PTPN11. Although, this may explain the pattern of SHP-2 overexpression in GC, additional studies are required to verify this hypothesis. The association of PTPN11 hypomethylation with GC incidence may be specific to male patients, heavy drinking patients, patients with poor tumor differentiation and patients with TNM stage of III+IV. PTPN11 hypomethylation can be considered a biomarker for the recurrence of GC patients with an age of 60 years or lower.
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Affiliation(s)
- Lele Xu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215200, P.R. China
| | - Cong Zhou
- Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Ranran Pan
- Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Junjian Tang
- Department of Vascular Surgery, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214000, P.R. China
| | - Jinzhi Wang
- Department of Cell Biology, School of Medicine, Soochow University, Suzhou, Jiangsu 215007, P.R. China
| | - Bin Li
- Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Tianyi Huang
- Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Shiwei Duan
- Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Chunfang Xu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215200, P.R. China
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Denny JWL, Krishna S, Valiallah N, Fogo A, Natkunarajah J. Images of the month 2: A leopard never changes its spots. Clin Med (Lond) 2020; 20:231-232. [DOI: 10.7861/clinmed.2019-0489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Therapeutic potential of targeting SHP2 in human developmental disorders and cancers. Eur J Med Chem 2020; 190:112117. [PMID: 32061959 DOI: 10.1016/j.ejmech.2020.112117] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/03/2020] [Accepted: 02/03/2020] [Indexed: 02/06/2023]
Abstract
Src homology 2 (SH2)-containing protein tyrosine phosphatase 2 (SHP2), encoded by PTPN11, regulates cell proliferation, differentiation, apoptosis and survival via releasing intramolecular autoinhibition and modulating various signaling pathways, such as mitogen-activated protein kinase (MAPK) pathway. Mutations and aberrant expression of SHP2 are implicated in human developmental disorders, leukemias and several solid tumors. As an oncoprotein in some cancers, SHP2 represents a rational target for inhibitors to interfere. Nevertheless, its tumor suppressive effect has also been uncovered, indicating the context-specificity. Even so, two types of SHP2 inhibitors including targeting catalytic pocket and allosteric sites have been developed associated with resolved cocrystal complexes. Herein, we describe its structure, biological function, deregulation in human diseases and summarize recent advance in development of SHP2 inhibitors, trying to give an insight into the therapeutic potential in future.
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Alfurayh N, Alsaif F, Alballa N, Zeitouni L, Ramzan K, Imtiaz F, Alakeel A. LEOPARD Syndrome with PTPN11 Gene Mutation in Three Family Members Presenting with Different Phenotypes. J Pediatr Genet 2019; 9:246-251. [PMID: 32765928 DOI: 10.1055/s-0039-3400226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 10/04/2019] [Indexed: 01/01/2023]
Abstract
LEOPARD syndrome (LS) is a rare autosomal dominant disorder that is characterized by multiple lentigines and various congenital anomalies. The clinical diagnosis of LS requires molecular confirmation. The most frequently reported mutations in LS patients are in the protein tyrosine phosphatase nonreceptor type 11 gene, PTPN11 . Herein, we report the cases of three family members from two generations who are affected by LS and all carry the PTPN11 mutation c.836A > G (p.Tyr279Cys), identified by next-generation sequencing, while exhibiting different phenotypes.
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Affiliation(s)
- Nuha Alfurayh
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Fahad Alsaif
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Nouf Alballa
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Leena Zeitouni
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Khushnooda Ramzan
- Department of Genetics, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Faiqa Imtiaz
- Department of Genetics, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Abdullah Alakeel
- Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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12
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Jurko T, Jurko A, Krsiakova J, Jurko A, Minarik M, Mestanik M. Importance of cardiovascular examination in patients with multiple lentigines: two cases of LEOPARD syndrome with hypertrophic cardiomyopathy. Acta Clin Belg 2019; 74:82-85. [PMID: 29717636 DOI: 10.1080/17843286.2018.1467531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Introduction LEOPARD syndrome is a rare genetic disorder characterised by lentigines, electrocardiographic conduction abnormalities, ocular hypertelorism, pulmonary stenosis, abnormal genitalia, retardation of growth and sensorineural deafness. Clinical manifestations are often mild, which may result in difficult and late diagnosis. Cardiac involvement may have a significant impact on the prognosis, however, appearance of severe abnormalities such as hypertrophic cardiomyopathy usually precedes the occurrence of multiple lentigines and may be asymptomatic. Case presentation We report two cases of LEOPARD syndrome with hypertrophic cardiomyopathy in a 10-year-old girl and an 18-year-old boy. In both cases, multiple lentigines, ocular hypertelorism and growth retardation were present. The first patient was followed up at the paediatric cardiology clinic due to the risk of progression of septal hypertrophy and pressure gradient across the left ventricular outflow tract, the second patient underwent surgery for a moderate obstruction of the left ventricular outflow tract with uncomplicated post-operative follow-up. Conclusion In both presented patients, hypertrophic cardiomyopathy was clinically silent and the murmur over the precordium was the sole cardiac abnormality revealed during routine visit. A detailed cardiologic examination should be considered in the patients with suspicion of LEOPARD syndrome since the ventricular hypertrophy is thought to precede the occurrence of lentigines and progress over time.
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Affiliation(s)
- Tomas Jurko
- Department of Neonatology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, University Hospital Martin, Martin, Slovakia
| | | | - Jana Krsiakova
- Clinic of Genetic Medicine, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | | | - Milan Minarik
- Faculty of Health Care, Catholic University in Ruzomberok, Ruzomberok, Slovakia
| | - Michal Mestanik
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
- Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
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13
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Tajan M, Paccoud R, Branka S, Edouard T, Yart A. The RASopathy Family: Consequences of Germline Activation of the RAS/MAPK Pathway. Endocr Rev 2018; 39:676-700. [PMID: 29924299 DOI: 10.1210/er.2017-00232] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 06/13/2018] [Indexed: 12/13/2022]
Abstract
Noonan syndrome [NS; Mendelian Inheritance in Men (MIM) #163950] and related syndromes [Noonan syndrome with multiple lentigines (formerly called LEOPARD syndrome; MIM #151100), Noonan-like syndrome with loose anagen hair (MIM #607721), Costello syndrome (MIM #218040), cardio-facio-cutaneous syndrome (MIM #115150), type I neurofibromatosis (MIM #162200), and Legius syndrome (MIM #611431)] are a group of related genetic disorders associated with distinctive facial features, cardiopathies, growth and skeletal abnormalities, developmental delay/mental retardation, and tumor predisposition. NS was clinically described more than 50 years ago, and disease genes have been identified throughout the last 3 decades, providing a molecular basis to better understand their physiopathology and identify targets for therapeutic strategies. Most of these genes encode proteins belonging to or regulating the so-called RAS/MAPK signaling pathway, so these syndromes have been gathered under the name RASopathies. In this review, we provide a clinical overview of RASopathies and an update on their genetics. We then focus on the functional and pathophysiological effects of RASopathy-causing mutations and discuss therapeutic perspectives and future directions.
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Affiliation(s)
- Mylène Tajan
- INSERM UMR 1048, Institute of Cardiovascular and Metabolic Diseases (I2MC), University of Toulouse Paul Sabatier, Toulouse, France
| | - Romain Paccoud
- INSERM UMR 1048, Institute of Cardiovascular and Metabolic Diseases (I2MC), University of Toulouse Paul Sabatier, Toulouse, France
| | - Sophie Branka
- INSERM UMR 1048, Institute of Cardiovascular and Metabolic Diseases (I2MC), University of Toulouse Paul Sabatier, Toulouse, France
| | - Thomas Edouard
- Endocrine, Bone Diseases, and Genetics Unit, Children's Hospital, Toulouse University Hospital, Toulouse, France
| | - Armelle Yart
- INSERM UMR 1048, Institute of Cardiovascular and Metabolic Diseases (I2MC), University of Toulouse Paul Sabatier, Toulouse, France
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Banuls J, Álvarez-Chinchilla PJ, Lucas A, Poveda I, Encabo-Durán B, Niveiro M, Nagore E, Zaballos P. Clinical, pathological and dermoscopic characteristics of cutaneous lesions in LEOPARD syndrome. J Eur Acad Dermatol Venereol 2017; 32:e100-e101. [PMID: 28862807 DOI: 10.1111/jdv.14573] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J Banuls
- Dermatology Department, Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain.,Medicina Clínica Department, Miguel Hernández University, Sant Joan D'Alacant, Alicante, Spain
| | - P J Álvarez-Chinchilla
- Dermatology Department, Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - A Lucas
- Dermatology Department, Hospital General Universitario de Elda, Elda, Spain
| | - I Poveda
- Dermatology Department, Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - B Encabo-Durán
- Dermatology Department, Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - M Niveiro
- Pathology Department, Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
| | - E Nagore
- Dermatology Department, Instituto Valenciano de Oncología, Valencia, Spain
| | - P Zaballos
- Dermatology Department, Hospital Sant Pau i Santa Tecla, Tarragona, Spain
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15
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Zhao Y, Lin L, Zhang Y, Geng D. SHP-2 Activating Mutation Promotes Malignant Biological Behaviors of Glioma Cells. Med Sci Monit 2017; 23:2931-2938. [PMID: 28620155 PMCID: PMC5484608 DOI: 10.12659/msm.904381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Background This study investigated the mechanism underlying the activating mutation of SHP-2 in promoting malignant biological behaviors of glioma cells. Material/Methods The SHP-2 empty plasmid pcDNA3.1 and SHP-2 activating mutation plasmid pcDNA3.1 SHP-2 D61G mutant eukaryotic expression vectors were designed; stable SHP-2-expressing cells transfected with pcDNA3.1 SHP-2 D61G mutant were set as the mutation group; cells transfected with pcDNA3.1 were set as the empty vector group; and cells without transfection were set as the control group. The cell reproductive capacity in each group was measured by MTT method. The invasion ability of cells in vitro was detected by Transwell chamber assay, the cell apoptosis in each group was detected by Annexin-V/PE dual-staining method, and the clone formation ability of cells in vitro was detected by Tablet clone-forming assay. The activation of ERK1/2, ARK, and p38MAPK signal pathways in each group was determined by Western blot. Results After transfection, the expression of SHP-2 protein in the mutant group was significantly higher than that in the control group and empty vector group. The proliferation ability of transfected cells, the apoptosis rate, the invasion ability, and the expression levels of phosphorylated ERK1/2, AKT, and p38 in the mutation group was significantly higher than in the empty vector group and the control group (P<0.05). Moreover, the cell clone formation ability of the mutation group was obviously enhanced (P<0.05). Conclusions The activating mutation of SHP-2 can lead to malignant changes in biological behaviors of glioma cells, and the specific mechanism may be related to the activation of ERK1/2, AKT, and p38 signal pathway. SHP-2 protein may become a new target for anti-malignant transformation of glioma.
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Affiliation(s)
- Yong Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
| | - Lin Lin
- Fourth Affiliated Hospital , Xinjiang Medical University, Urumqi, Xinjiang, Uganda
| | - Yonghui Zhang
- Fourth Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
| | - Dangmurenjiafu Geng
- Department of Neurosurgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China (mainland)
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Zhang J, Li M, Yao Z. Molecular screening strategies for NF1-like syndromes with café-au-lait macules (Review). Mol Med Rep 2016; 14:4023-4029. [PMID: 27666661 PMCID: PMC5112360 DOI: 10.3892/mmr.2016.5760] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 04/26/2016] [Indexed: 12/28/2022] Open
Abstract
Multiple café-au-lait macules (CALM) are usually associated with neurofibromatosis type 1 (NF1), one of the most common hereditary disorders. However, a group of genetic disorders presenting with CALM have mutations that are involved in human skin pigmentation regulation signaling pathways, including KIT ligand/KIT proto‑oncogene receptor tyrosine kinase and Ras/mitogen‑activated protein kinase. These disorders, which include Legius syndrome, Noonan syndrome with multiple lentigines or LEOPARD syndrome, and familial progressive hyperpigmentation) are difficult to distinguish from NF1 at early stages, using skin appearance alone. Furthermore, certain syndromes are clinically overlapping and molecular testing is a vital diagnostic method. The present review aims to provide an overview of these 'NF1‑like' inherited diseases and recommend a cost‑effective strategy for making a clear diagnosis among these diseases with an ambiguous borderline.
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Affiliation(s)
- Jia Zhang
- Department of Dermatology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Ming Li
- Department of Dermatology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Zhirong Yao
- Department of Dermatology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
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Zhang J, Shen J, Cheng R, Ni C, Liang J, Li M, Yao Z. Identification of a PTPN11 hot spot mutation in a child with atypical LEOPARD syndrome. Mol Med Rep 2016; 14:2639-43. [DOI: 10.3892/mmr.2016.5547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 02/15/2016] [Indexed: 11/06/2022] Open
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18
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Hernández-Martín A, Duat-Rodríguez A. An Update on Neurofibromatosis Type 1: Not Just Café-au-Lait Spots, Freckling, and Neurofibromas. An Update. Part I. Dermatological Clinical Criteria Diagnostic of the Disease. ACTAS DERMO-SIFILIOGRAFICAS 2016. [DOI: 10.1016/j.adengl.2016.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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19
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Hernández-Martín A, Duat-Rodríguez A. An Update on Neurofibromatosis Type 1: Not Just Café-au-Lait Spots, Freckling, and Neurofibromas. An Update. Part I. Dermatological Clinical Criteria Diagnostic of the Disease. ACTAS DERMO-SIFILIOGRAFICAS 2016; 107:454-64. [PMID: 26979265 DOI: 10.1016/j.ad.2016.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 01/07/2016] [Accepted: 01/17/2016] [Indexed: 01/10/2023] Open
Abstract
Neurofibromatosis type 1 (NF1) is the most common neurocutaneous syndrome and probably the one best known to dermatologists, who are generally the first physicians to suspect its diagnosis. Although the genetic locus of NF1 was identified on chromosome 17 in 1987, diagnosis of the disease is still mainly based on clinical observations and the diagnostic criteria of the National Institute of Health, dating from 1988. Cutaneous manifestations are particularly important because café-au-lait spots, freckling on flexural areas, and cutaneous neurofibromas comprise 3 of the 7 clinical diagnostic criteria. However, café-au-lait spots and freckling can also be present in other diseases. These manifestations are therefore not pathognomonic and are insufficient for definitive diagnosis in the early years of life. NF1 is a multisystemic disease associated with a predisposition to cancer. A multidisciplinary follow-up is necessary and dermatologists play an important role.
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Affiliation(s)
- A Hernández-Martín
- Servicio de Dermatología, Hospital Infantil del Niño Jesús, Madrid, España.
| | - A Duat-Rodríguez
- Servicio de Neurología, Hospital Infantil del Niño Jesús, Madrid, España
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Zhang J, Cheng R, Liang J, Ni C, Li M, Yao Z. Lentiginous phenotypes caused by diverse pathogenic genes (SASH1 and PTPN11): clinical and molecular discrimination. Clin Genet 2016; 90:372-7. [PMID: 27659786 DOI: 10.1111/cge.12728] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 01/05/2016] [Accepted: 01/06/2016] [Indexed: 02/03/2023]
Abstract
Pathogenic mutations in genes (SASH1 and PTPN11) can cause a rare genetic disorder associated with pigmentation defects and the well-known LEOPARD syndrome, respectively. Both conditions presented with lentiginous phenotypes. The aim of this study was to arrive at definite diagnoses of three Chinese boys with clinically suspected lentigines-related syndromes. ADAR1, ABCB6, SASH1 and PTPN11 were candidate genes for mutational screening. Sanger sequencing was performed to identify the mutations, whereas bioinformatic analysis was used to predict the pathogenicity of novel missense mutations. Two novel mutations c.1537A>C (p.Ser513Arg) and 1527_1530dupAAGT (p.Leu511Lysfs*21) in SASH1 and a common p.Thr468Met mutation in PTPN11 were detected in three pediatric patients with lentiginous phenotypes, respectively. Comparisons between clinical presentations showed that SASH1-related phenotypes can exhibit hyper- and hypopigmentation on the trunk and extremities, similar to dyschromatosis, while scattered café au-lait spots usually appeared in PTPN11-related LEOPARD syndrome. Furthermore, the similarity in the clinical presentations of Peutz-Jeghers syndrome, Laugier-Hunziker syndrome, xeroderma pigmentosum, neurofibromatosis type I, suggesting that these conditions should be added into the differential diagnoses of lentiginous phenotypes.
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Affiliation(s)
- J Zhang
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - R Cheng
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - J Liang
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - C Ni
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - M Li
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Z Yao
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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