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Jiang YN, Gao Y, Lai X, Li X, Liu G, Ding M, Wang Z, Guo Z, Qin Y, Li X, Sun L, Wang ZQ, Zhou ZW. Microcephaly Gene Mcph1 Deficiency Induces p19ARF-Dependent Cell Cycle Arrest and Senescence. Int J Mol Sci 2024; 25:4597. [PMID: 38731817 PMCID: PMC11083351 DOI: 10.3390/ijms25094597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/10/2024] [Accepted: 04/15/2024] [Indexed: 05/13/2024] Open
Abstract
MCPH1 has been identified as the causal gene for primary microcephaly type 1, a neurodevelopmental disorder characterized by reduced brain size and delayed growth. As a multifunction protein, MCPH1 has been reported to repress the expression of TERT and interact with transcriptional regulator E2F1. However, it remains unclear whether MCPH1 regulates brain development through its transcriptional regulation function. This study showed that the knockout of Mcph1 in mice leads to delayed growth as early as the embryo stage E11.5. Transcriptome analysis (RNA-seq) revealed that the deletion of Mcph1 resulted in changes in the expression levels of a limited number of genes. Although the expression of some of E2F1 targets, such as Satb2 and Cdkn1c, was affected, the differentially expressed genes (DEGs) were not significantly enriched as E2F1 target genes. Further investigations showed that primary and immortalized Mcph1 knockout mouse embryonic fibroblasts (MEFs) exhibited cell cycle arrest and cellular senescence phenotype. Interestingly, the upregulation of p19ARF was detected in Mcph1 knockout MEFs, and silencing p19Arf restored the cell cycle and growth arrest to wild-type levels. Our findings suggested it is unlikely that MCPH1 regulates neurodevelopment through E2F1-mediated transcriptional regulation, and p19ARF-dependent cell cycle arrest and cellular senescence may contribute to the developmental abnormalities observed in primary microcephaly.
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Affiliation(s)
- Yi-Nan Jiang
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.-N.J.); (X.L.)
| | - Yizhen Gao
- Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.G.); (L.S.)
| | - Xianxin Lai
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.-N.J.); (X.L.)
| | - Xinjie Li
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.-N.J.); (X.L.)
| | - Gen Liu
- Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.G.); (L.S.)
| | - Mingmei Ding
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.-N.J.); (X.L.)
| | - Zhiyi Wang
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.-N.J.); (X.L.)
| | - Zixiang Guo
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.-N.J.); (X.L.)
| | - Yinying Qin
- Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.G.); (L.S.)
| | - Xin Li
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.-N.J.); (X.L.)
| | - Litao Sun
- Shenzhen Key Laboratory of Pathogenic Microbes and Biosafety, School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.G.); (L.S.)
| | - Zhao-Qi Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China;
| | - Zhong-Wei Zhou
- Shenzhen Key Laboratory for Systems Medicine in Inflammatory Diseases, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China; (Y.-N.J.); (X.L.)
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Paduano F, Colao E, Fabiani F, Rocca V, Dinatolo F, Dattola A, D’Antona L, Amato R, Trapasso F, Baudi F, Perrotti N, Iuliano R. Germline Testing in a Cohort of Patients at High Risk of Hereditary Cancer Predisposition Syndromes: First Two-Year Results from South Italy. Genes (Basel) 2022; 13:genes13071286. [PMID: 35886069 PMCID: PMC9319682 DOI: 10.3390/genes13071286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 12/04/2022] Open
Abstract
Germline pathogenic variants (PVs) in oncogenes and tumour suppressor genes are responsible for 5 to 10% of all diagnosed cancers, which are commonly known as hereditary cancer predisposition syndromes (HCPS). A total of 104 individuals at high risk of HCPS were selected by genetic counselling for genetic testing in the past 2 years. Most of them were subjects having a personal and family history of breast cancer (BC) selected according to current established criteria. Genes analysis involved in HCPS was assessed by next-generation sequencing (NGS) using a custom cancer panel with high- and moderate-risk susceptibility genes. Germline PVs were identified in 17 of 104 individuals (16.3%) analysed, while variants of uncertain significance (VUS) were identified in 21/104 (20.2%) cases. Concerning the germline PVs distribution among the 13 BC individuals with positive findings, 8/13 (61.5%) were in the BRCA1/2 genes, whereas 5/13 (38.4%) were in other high- or moderate-risk genes including PALB2, TP53, ATM and CHEK2. NGS genetic testing showed that 6/13 (46.1%) of the PVs observed in BC patients were detected in triple-negative BC. Interestingly, the likelihood of carrying the PVs in the moderate-to-high-risk genes calculated by the cancer risk model BOADICEA was significantly higher in pathogenic variant carriers than in negative subjects. Collectively, this study shows that multigene panel testing can offer an effective diagnostic approach for patients at high risk of hereditary cancers.
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Affiliation(s)
- Francesco Paduano
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
- Stem Cells and Medical Genetics Units, Tecnologica Research Institute and Marrelli Health, 88900 Crotone, Italy
- Correspondence: (F.P.); (R.I.)
| | - Emma Colao
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
| | - Fernanda Fabiani
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
| | - Valentina Rocca
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
- Department of Experimental and Clinical Medicine, Campus S. Venuta, University Magna Graecia of Catanzaro, Viale Europa, Località Germaneto, 88100 Catanzaro, Italy
| | - Francesca Dinatolo
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
| | - Adele Dattola
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
| | - Lucia D’Antona
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Rosario Amato
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Francesco Trapasso
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
- Department of Experimental and Clinical Medicine, Campus S. Venuta, University Magna Graecia of Catanzaro, Viale Europa, Località Germaneto, 88100 Catanzaro, Italy
| | - Francesco Baudi
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Nicola Perrotti
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
| | - Rodolfo Iuliano
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (F.F.); (V.R.); (F.D.); (A.D.); (L.D.); (R.A.); (F.T.); (F.B.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
- Correspondence: (F.P.); (R.I.)
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Yue F, Xi Q, Zhang X, Jiang Y, Zhang H, Liu R. Molecular cytogenetic characterization of 16p11.2 microdeletions with diverse prenatal phenotypes: Four cases report and literature review. Taiwan J Obstet Gynecol 2022; 61:544-550. [PMID: 35595456 DOI: 10.1016/j.tjog.2022.03.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2021] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE Chromosome 16p11.2 deletions have been recognized as a genetic disorder with well-described postnatal phenotypes. However, the prenatal manifestations are atypical for lacking of enough evidence. CASE REPORT Four pregnant women underwent amniocentesis for cytogenetic analysis and chromosomal microarray analysis (CMA) because of various indications for prenatal diagnosis: prenatal ultrasound abnormalities (cases 1, 2 and 4) and the childbearing history of cerebral palsy child (case 3). No overlapping phenotypes were observed in cases 1, 2 and 4, which might indicate phenotypic diversities in prenatal phenotypes for 16p11.2 microdeletion. All four fetuses showed normal karyotypic results while CMA identified 0.303-0.916 Mb microdeletions of 16p11.2, encompassing BP2-BP3 and BP4-BP5 regions separately. According to the parental CMA verification, case 1 carried a maternal inherited duplication in the region of Xp22.33 and a de novo deletion in the region of Xp21.1. All parents opted for the termination of pregnancies based upon genetic counselling. CONCLUSION Our findings enriched the intrauterine phenotypic features of 16p11.2 microdeletions, which would be beneficial for genetic counselling in clinic. In addition, preimplantation genetic testing was recognized as a first-tier approach for such carriers if they intended to conceive again.
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Affiliation(s)
- Fagui Yue
- Center for Reproductive Medicine and Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, 130021, China
| | - Qi Xi
- Center for Reproductive Medicine and Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, 130021, China
| | - Xinyue Zhang
- Center for Reproductive Medicine and Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, 130021, China
| | - Yuting Jiang
- Center for Reproductive Medicine and Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, 130021, China
| | - Hongguo Zhang
- Center for Reproductive Medicine and Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, 130021, China
| | - Ruizhi Liu
- Center for Reproductive Medicine and Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, 130021, China.
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Paduano F, Colao E, Grillone T, Vismara MFM, Amato R, Nisticò S, Mignogna C, Dastoli S, Fabiani F, Zucco R, Trapasso F, Perrotti N, Iuliano R. A Familial Form of Epidermolysis Bullosa Simplex Associated with a Pathogenic Variant in KRT5. Genes (Basel) 2021; 12:genes12101503. [PMID: 34680898 PMCID: PMC8535670 DOI: 10.3390/genes12101503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/16/2021] [Accepted: 09/19/2021] [Indexed: 12/21/2022] Open
Abstract
Epidermolysis bullosa simplex is a disease that belongs to a group of genodermatoses characterised by the formation of superficial bullous lesions caused by minor mechanical trauma to the skin. The skin fragility observed in the EBS is mainly caused by pathogenic variants in the KRT5 and KRT14 genes that compromise the mechanical stability of epithelial cells. By performing DNA sequencing in a female patient with EBS, we found the pathogenic variant c.967G>A (p.Val323Met) in the KRT5 gene. This variant co-segregated with EBS in the family pedigree and was transmitted in an autosomal dominant inheritance manner. This is the first report showing a familial form of EBS due to this pathogenic variant.
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Affiliation(s)
- Francesco Paduano
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy; (S.N.); (C.M.); (S.D.); (R.Z.)
- Tecnologica Research Institute and Marrelli Health, Biomedical Section, Stem Cells and Medical Genetics Units, 88900 Crotone, Italy
- Correspondence: (F.P.); (R.I.)
| | - Emma Colao
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
| | - Teresa Grillone
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
| | - Marco Flavio Michele Vismara
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
| | - Rosario Amato
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy; (S.N.); (C.M.); (S.D.); (R.Z.)
| | - Steven Nisticò
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy; (S.N.); (C.M.); (S.D.); (R.Z.)
| | - Chiara Mignogna
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy; (S.N.); (C.M.); (S.D.); (R.Z.)
| | - Stefano Dastoli
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy; (S.N.); (C.M.); (S.D.); (R.Z.)
| | - Fernanda Fabiani
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
| | - Rossella Zucco
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy; (S.N.); (C.M.); (S.D.); (R.Z.)
| | - Francesco Trapasso
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
- Department of Experimental and Clinical Medicine, Campus S. Venuta, University Magna Graecia of Catanzaro, Viale Europa, 88100 Catanzaro, Italy
| | - Nicola Perrotti
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy; (S.N.); (C.M.); (S.D.); (R.Z.)
| | - Rodolfo Iuliano
- Medical Genetics Unit, Mater Domini University Hospital, 88100 Catanzaro, Italy; (E.C.); (T.G.); (M.F.M.V.); (R.A.); (F.F.); (F.T.); (N.P.)
- Department of Health Sciences, Campus S. Venuta, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy; (S.N.); (C.M.); (S.D.); (R.Z.)
- Correspondence: (F.P.); (R.I.)
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