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No Evidence of Abnormal Expression of Beta-Catenin and Bcl-2 Proteins in Pilomatricoma as One Clinical Feature of Tetrasomy 9p Syndrome. Int J Pediatr 2021; 2021:2612846. [PMID: 34956371 PMCID: PMC8694977 DOI: 10.1155/2021/2612846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/19/2021] [Accepted: 11/20/2021] [Indexed: 11/18/2022] Open
Abstract
Background Little is currently known about the genetics of pilomatricoma. A number of studies have reported some evidence that this disease may have a genetic association with mutations of CTNNB1 gene or expression of the beta-catenin protein. In this study, we reviewed literatures involving 30 patients with various genetic syndromes that have been linked to pilomatricoma and found that somatic mutations of the CTNNB1 gene were reported in 67% of patients. Pilomatricoma has been reported in patients with chromosome 9 rearrangements, including 4 patients with tetrasomy 9p syndrome and one patient with partial trisomy 9. In addition to beta-catenin, the expression of bcl2 was observed in pilomatricoma. Objectives To report an additional case of tetrasomy 9p syndrome with concurrent pilomatricoma and to examine whether abnormal protein expressions of the CTNNB1 and/or BCL2 genes were present. Methods Cytogenetic analysis was carried out on peripheral blood, biopsied skin, and pilomatricoma tissue obtained from a patient with tetrasomy 9p syndrome. Immunohistochemical staining was performed on the pilomatricoma tissue, using beta-catenin and bcl2 monoclonal antibodies. Results SNP microarray revealed nonmosaic gain of the short arm of chromosome 9. A nonmosaic isodicentric chromosome 9 was identified in the peripheral blood but this rearranged chromosome was detected in only 8.3% of the skin fibroblasts. Chromosomal abnormalities were not detected in the pilomatricoma nor expression of beta-catenin or bcl2 proteins in our patient. Conclusion Pilomatricoma could be a new clinical feature associated with tetrasomy 9p syndrome; however, we found no evidence of tetrasomy 9p or abnormal beta-catenin or bcl2 proteins of the CTNNB1 and BCL2 genes in our pilomatricoma patient.
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Surun A, Varlet P, Brugières L, Lacour B, Faure-Conter C, Leblond P, Bertozzi-Salomon AI, Berger C, André N, Sariban E, Raimbault S, Prieur F, Desseigne F, Zattara H, Guimbaud R, Polivka M, Delisle MB, Vasiljevic A, Maurage CA, Figarella-Branger D, Coulet F, Guerrini-Rousseau L, Alapetite C, Dufour C, Colas C, Doz F, Bourdeaut F. Medulloblastomas associated with an APC germline pathogenic variant share the good prognosis of CTNNB1-mutated medulloblastomas. Neuro Oncol 2021; 22:128-138. [PMID: 31504825 DOI: 10.1093/neuonc/noz154] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Medulloblastomas may occur in a predisposition context, including familial adenomatosis polyposis. Medulloblastomas related to a germline pathogenic variant of adenomatous polyposis coli (APC) remain rare and poorly described. Their similarities with sporadic WNT medulloblastomas still require description. METHODS We performed a multicentric retrospective review of 12 patients treated between 1988 and 2018 for medulloblastoma with an identified or highly suspected (personal or familial history) APC germline pathogenic variant. We report personal and familial history APC gene pathogenic variants whenever available: clinical and histologic characteristics of the medulloblastoma, treatments, and long-term outcome, including second tumor and late sequelae. RESULTS Medulloblastomas associated with APC pathogenic variants are mainly classic (11/11 patients, 1 not available), nonmetastatic (10/12 patients) medulloblastomas, with nuclear immunoreactivity for ß-catenin (9/9 tested cases). Ten of 11 assessable patients are disease free with a median follow-up of 10.7 years (range, 1-28 y). Secondary tumors included desmoid tumors in 7 patients (9 tumors), 1 thyroid carcinoma, 2 pilomatricomas, 1 osteoma, 1 vertebral hemangioma, and 1 malignant triton in the radiation field, which caused the only cancer-related death in our series. CONCLUSIONS Medulloblastomas associated with an APC pathogenic variant have an overall favorable outcome, even for metastatic tumors. Yet, long-term survival is clouded by second tumor occurrence; treatment may play some role in some of these second malignancies. Our findings raise the question of applying a de-escalation therapeutic protocol to treat patients with APC germline pathogenic variants given the excellent outcome, and reduced intensity of craniospinal irradiation may be further evaluated.
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Affiliation(s)
- Aurore Surun
- Curie Institute, SIREDO Cancer Center (Care, Innovation and Research in Pediatric, Adolescents, and Young Adults Oncology), Paris, France.,Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Pascale Varlet
- Paris Descartes University, Sorbonne Paris Cité, Paris, France.,Sainte Anne Hospital, Department of Neuropathology, Paris, France
| | - Laurence Brugières
- Gustave Roussy Cancer Center, Department of Pediatric and Adolescent Oncology, Paris-Saclay University, Villejuif, France
| | - Brigitte Lacour
- CRESS Equipe 7 UMRS 1153, INSERM, Paris Descartes University, Paris, and National Registry of Solid Tumors, Nancy University Hospital, Vandoeuvre-les-Nancy, France
| | - Cécile Faure-Conter
- Centre Leon Berard, Pediatric Hemato-oncology Institute (IHOP), Lyon, France
| | - Pierre Leblond
- Centre Oscar Lambret, Pediatric Oncology Department, Lille, France
| | | | - Claire Berger
- Saint-Etienne University Hospital, Pediatric Hemato-oncology Department, Saint-Etienne, France
| | - Nicolas André
- Aix Marseille University, La Timone, Pediatric Hemato-oncology Department, AP-HM, Marseille, France
| | - Eric Sariban
- Hôpital des Enfants, Unité Cancer, Bruxelles, Belgique
| | - Sandra Raimbault
- Gustave Roussy Cancer Center, Department of Pediatric and Adolescent Oncology, Paris-Saclay University, Villejuif, France
| | - Fabienne Prieur
- Saint-Etienne University Hospital, Genetic Department, Saint-Etienne, France
| | | | - Hélène Zattara
- Marseille University, La Timone, Genetic Department, Marseille, France
| | - Rosine Guimbaud
- Centre Claudius Regaud, Oncogenetic Department, Toulouse, France
| | - Marc Polivka
- University Hospital Lariboisière, Department of Pathology, Paris, France
| | | | | | | | | | - Florence Coulet
- Pitié Salpêtrière hospital, Genetic Department, Paris, France
| | - Léa Guerrini-Rousseau
- Gustave Roussy Cancer Center, Department of Pediatric and Adolescent Oncology, Paris-Saclay University, Villejuif, France
| | - Claire Alapetite
- Curie Institute, Department of Radiation Oncology, Paris, France
| | - Christelle Dufour
- Gustave Roussy Cancer Center, Department of Pediatric and Adolescent Oncology, Paris-Saclay University, Villejuif, France
| | | | - François Doz
- Curie Institute, SIREDO Cancer Center (Care, Innovation and Research in Pediatric, Adolescents, and Young Adults Oncology), Paris, France.,Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Franck Bourdeaut
- Curie Institute, SIREDO Cancer Center (Care, Innovation and Research in Pediatric, Adolescents, and Young Adults Oncology), Paris, France
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Alharbi M, Mobark N, Bashawri Y, Abu Safieh L, Alowayn A, Aljelaify R, AlSaeed M, Almutairi A, Alqubaishi F, AlSolme E, Ahmad M, Al-Banyan A, Alotabi FE, Serrano J, Snuderl M, Al-Rashed M, Abedalthagafi M. Methylation Profiling of Medulloblastoma in a Clinical Setting Permits Sub-classification and Reveals New Outcome Predictions. Front Neurol 2020; 11:167. [PMID: 32265819 PMCID: PMC7100767 DOI: 10.3389/fneur.2020.00167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 02/21/2020] [Indexed: 12/11/2022] Open
Abstract
Medulloblastoma (MB) is the most common childhood malignant brain tumor and is a leading cause of cancer-related death in children. DNA methylation profiling has rapidly advanced our understanding of MB pathogenesis at the molecular level, but assessments in Saudi Arabian (SA)-MB cases are sparse. MBs can be sub-grouped according to methylation patterns from FPPE samples into Wingless (WNT-MB), Sonic Hedgehog (SHH-MB), Group 3 (G3), and Group 4 (G4) tumors. The WNT-MB and SHH-MB subgroups are characterized by gain-of function mutations that activate oncogenic cell signaling, whilst G3/G4 tumors show recurrent chromosomal alterations. Given that each subgroup has distinct clinical outcomes, the ability to subgroup SA-FPPE samples holds significant prognostic and therapeutic value. Here, we performed the first assessment of MB-DNA methylation patterns in an SA cohort using archival biopsy material (FPPE n = 49). Of the 41 materials available for methylation assessments, 39 could be classified into the major DNA methylation subgroups (SHH, WNT, G3, and G4). Furthermore, methylation analysis was able to reclassify tumors that could not be sub-grouped through next-generation sequencing, highlighting its superior accuracy for MB molecular classifications. Independent assessments demonstrated known clinical relationships of the subgroups, exemplified by the high survival rates observed for WNT tumors. Surprisingly, the G4 subgroup did not conform to previously identified phenotypes, with a high prevalence in females, high metastatic rates, and a large number of tumor-associated deaths. Taking our results together, we demonstrate that DNA methylation profiling enables the robust sub-classification of four disease sub-groups in archival FFPE biopsy material from SA-MB patients. Moreover, we show that the incorporation of DNA methylation biomarkers can significantly improve current disease-risk stratification schemes, particularly concerning the identification of aggressive G4 tumors. These findings have important implications for future clinical disease management in MB cases across the Arab world.
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Affiliation(s)
- Musa Alharbi
- Department of Paediatric Oncology Comprehensive Cancer Centre, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Nahla Mobark
- Department of Paediatric Oncology Comprehensive Cancer Centre, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Yara Bashawri
- Department of Biostatistics, Research Centre, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Leen Abu Safieh
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Albandary Alowayn
- Department of Biostatistics, Research Centre, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Rasha Aljelaify
- Department of Biostatistics, Research Centre, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Mariam AlSaeed
- Department of Biostatistics, Research Centre, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Amal Almutairi
- Department of Biostatistics, Research Centre, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Fatimah Alqubaishi
- Department of Biostatistics, Research Centre, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Ebtehal AlSolme
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Maqsood Ahmad
- Department of Neuroscience, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Ayman Al-Banyan
- Department of Neuroscience, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Fahad E Alotabi
- Department of Neuroscience, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Jonathan Serrano
- Department of Pathology, NYU Langone Medical Center, New York, NY, United States
| | - Matija Snuderl
- Department of Pathology, NYU Langone Medical Center, New York, NY, United States
| | - May Al-Rashed
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Malak Abedalthagafi
- Genomics Research Department, Saudi Human Genome Project, King Fahad Medical City and King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
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Dermatopathology of Cutaneous Cystic Lesions: A Practical Review With Diagnostic Clues and Pitfalls. Am J Dermatopathol 2020; 41:783-793. [PMID: 31633550 DOI: 10.1097/dad.0000000000001362] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Cystic lesions are common in the daily practice of dermatologists and dermatopathologists, and in most cases, a straightforward diagnosis can be done. Yet, some variants and situations may cause diagnostic problems or carry prognostic and/or systemic implications. OBJECTIVE To review the histopathological features of the most frequent cystic lesions, either true cysts or pseudocysts, and provide some clues and pitfalls to bear in mind for troublesome situations such as solid-cystic tumors; uncommon variants; incidental findings; artifactual, reactive, or infectious cavities; cysts as a warning of systemic and hereditary diseases; and malignant cystic tumors, either primary or metastatic. METHODS The histopathological diagnostic criteria of most cystic lesions and their potential caveats will be discussed, offering some diagnostic clues. RESULTS Cystic lesions of the skin can primarily be classified into true cysts and pseudocysts. The most frequent pseudocysts are sinus pilonidalis and mucin-filled cavities. True cysts can be divided according to their epithelial origin or differentiation into epidermal/pilar cysts, cysts from glandular appendages, and from embryonic remnants. Diagnostic dilemmas and possible pitfalls in cystic lesions are reviewed, offering some keys to solve them. CONCLUSIONS Knowledge of the histopathology of cystic lesions contributes to their correct diagnosis, improving the management of patients.
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Li W, Yang CJ, Wang LQ, Wu J, Dai C, Yuan YM, Li GQ, Yao MC. A tannin compound from Sanguisorba officinalis blocks Wnt/β-catenin signaling pathway and induces apoptosis of colorectal cancer cells. Chin Med 2019; 14:22. [PMID: 31164916 PMCID: PMC6544925 DOI: 10.1186/s13020-019-0244-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 05/24/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Sanguisorba officinalis, a popular Chinese herb, called DiYu, has been shown to inhibit the growth of many human cancer cell lines, including colorectal cancer cells. The aims of this study were to discover the active compound and molecular mechanism of S. officinalis against Wnt/β-catenin signaling pathway and develop Wnt inhibitors from natural products as anti-colorectal cancer agents. METHODS 1,4,6-Tri-O-galloyl-β-d-glucopyranose (TGG) was obtained by the preparative HPLC. The effect of DiYu on proliferation of NIH3T3 and HT29 was detected by MTT assay. Luciferase reporter assay was applied to investigate the activity of Wnt/β-catenin signaling in NIH3T3. The expression levels of mRNA and protein were detected by RT-PCR and western blot. Immunofluorescence assay was used to measure the level of β-catenin in cytoplasm and nucleus. Transcriptomic profiling study was performed to investigate the molecular mechanism of DiYu on the Wnt/β-catenin signaling pathway. RESULTS TGG significantly inhibited the Wnt/β-catenin signaling pathway, down-regulated the expression of β-catenin and Wnt target genes (Dkk1, c-Myc, FGF20, NKD1, Survivin), up-regulated the levels of cleaved caspase3, cleaved PARP and ratio of Bax/Bcl-2, which may explain the apoptosis of HT29. CONCLUSIONS Our study enhanced the discovery of the materials and elucidation of mechanisms that account for the anti-Wnt activity of natural inhibitor (DiYu) and identified the potential of TGG to be developed as anti-colorectal cancer drugs.
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Affiliation(s)
- Wa Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 People’s Republic of China
| | - Chun-juan Yang
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081 Heilongjiang China
| | - Li-qian Wang
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081 Heilongjiang China
| | - Juan Wu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Cong Dai
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 People’s Republic of China
| | - Yue-mei Yuan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 People’s Republic of China
| | - George Q. Li
- NICM Health Research Institute, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751 Australia
| | - Mei-cun Yao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 People’s Republic of China
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Jin T, Peng G, Wu E, Mendiratta S, Elul T. N-terminal and central domains of APC function to regulate branch number, length and angle in developing optic axonal arbors in vivo. Brain Res 2018; 1697:34-44. [PMID: 29856981 DOI: 10.1016/j.brainres.2018.05.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 05/07/2018] [Accepted: 05/28/2018] [Indexed: 11/24/2022]
Abstract
During formation of neuronal circuits, axons navigate long distances to reach their target locations in the brain. When axons arrive at their target tissues, in many cases, they extend collateral branches and/or terminal arbors that serve to increase the number of synaptic connections they make with target neurons. Here, we investigated how Adenomatous Polyposis Coli (APC) regulates terminal arborization of optic axons in living Xenopus laevis tadpoles. The N-terminal and central domains of APC that regulate the microtubule cytoskeleton and stability of β-catenin in the Wnt pathway, were co-expressed with GFP in individual optic axons, and their terminal arbors were then imaged in tectal midbrains of intact tadpoles. Our data show that the APCNTERM and APCβ-cat domains both decreased the mean number, and increased the mean length, of branches in optic axonal arbors relative to control arbors in vivo. Additional analysis demonstrated that expression of the APCNTERM domain increased the average bifurcation angle of branching in optic axonal arbors. However, the APCβ-cat domain did not significantly affect the mean branch angle of arbors in tecta of living tadpoles. These data suggest that APC N-terminal and central domains both modulate number and mean length of branches optic axonal arbors in a compensatory manner, but also define a specific function for the N-terminal domain of APC in regulating branch angle in optic axonal arbors in vivo. Our findings establish novel mechanisms for the multifunctional protein APC in shaping terminal arbors in the visual circuit of the developing vertebrate brain.
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Affiliation(s)
- Taegun Jin
- Touro University California, Vallejo, CA, United States
| | - Gregory Peng
- Touro University California, Vallejo, CA, United States
| | - Esther Wu
- Touro University California, Vallejo, CA, United States
| | | | - Tamira Elul
- Touro University California, Vallejo, CA, United States.
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