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Perry JL, Williams JL, Snodgrass TD, Sitzman TJ. VPI Management in SATB2 Syndrome: Use of MRI to Evaluate Anatomy and Physiology in Non-Cleft VPI. Cleft Palate Craniofac J 2023; 60:1499-1504. [PMID: 35695193 PMCID: PMC10183239 DOI: 10.1177/10556656221106888] [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] [Indexed: 11/15/2022] Open
Abstract
This clinical case study describes the velopharyngeal anatomy and physiology in a patient who presented with SATB2-associated syndrome (SAS) and velopharyngeal insufficiency (VPI) in the absence of an overt cleft palate. The clinical presentation, treatment, outcome, and the contribution of anatomical findings from MRI to surgical treatment planning for this rare genetic disorder, SAS, are described. This case study contributes to our current understanding of the anatomy and physiology of the velopharyngeal mechanism in an individual born with SAS and non-cleft VPI. It also details the changes following bilateral buccal myomucosal flaps in this patient.
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Affiliation(s)
- Jamie L Perry
- Department of Communication Sciences and Disorders, East Carolina University, Greenville, NC, USA
| | - Jessica L Williams
- Barrow Cleft and Craniofacial Center, Phoenix, AZ, USA
- Department of Speech and Hearing Science, Arizona State University, Tempe, AZ, USA
| | - Taylor D Snodgrass
- Department of Communication Sciences and Disorders, East Carolina University, Greenville, NC, USA
| | - Thomas J Sitzman
- Barrow Cleft and Craniofacial Center, Phoenix, AZ, USA
- Division of Plastic Surgery, Phoenix Children's Hospital, Phoenix, AZ, USA
- Division of Plastic Surgery, Mayo Clinic Arizona, Scottsdale, AZ, USA
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2
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Shelley L, Waite J, Tarver J, Oliver C, Crawford H, Richards C, Bissell S. Behaviours that Challenge in SATB2-associated Syndrome: Correlates of Self-injury, Aggression and Property Destruction. J Autism Dev Disord 2023:10.1007/s10803-023-06123-2. [PMID: 37751087 DOI: 10.1007/s10803-023-06123-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/22/2023] [Indexed: 09/27/2023]
Abstract
SATB2-associated syndrome (SAS) is a genetic syndrome characterised by intellectual disability, severe speech delay, and palatal and dental problems. Behaviours that challenge (BtC) are reported frequently; however, there is limited research on specific forms of BtC and the correlates of these behaviours. The current study explores correlates of well-defined BtC, self-injury, aggression, and property destruction, in SAS. Eighty-one parents/caregivers of individuals with SAS (53.1% male, Mage 10.12 years) completed questionnaire measures of health, behavioural, emotional, and autism characteristics. Individuals with SAS were grouped based on caregiver responses to the presence or absence of self-injury, aggression, and property destruction on the Challenging Behaviour Questionnaire. Rates of self-injury, aggression and property destruction were 42%, 77% and 49%, respectively. Between-group comparisons were conducted to compare characteristics between behaviour groups. Significantly differing characteristics were entered into separate hierarchical logistic regressions for each form of BtC. Behavioural comparisons indicated variation in the characteristics associated with each behaviour. All hierarchical logistic regression models were significant (p < .001): self-injury (χ2(5) = 38.46, R2 = 0.571), aggression (χ2(4) = 25.12, R2 = 0.414), property destruction (χ2(4) = 23.70, R2 = 0.346), explaining between 34.6% and 57.1% of the variance in behaviour presence. This is the first study to identify correlates of self-injury, aggression, and property destruction in SAS. Variability in the characteristics associated with each behaviour highlights the importance of specificity when examining BtC. Understanding correlates of specific forms of BtC has important implications for informing SAS-associated pathways to behavioural outcomes and the implementation of tailored behavioural interventions.
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Affiliation(s)
- Lauren Shelley
- College of Health and Life Sciences, Aston University, Birmingham, UK.
- Cerebra Network for Neurodevelopmental Disorders, University of Birmingham, Birmingham, UK.
| | - Jane Waite
- College of Health and Life Sciences, Aston University, Birmingham, UK
- Cerebra Network for Neurodevelopmental Disorders, University of Birmingham, Birmingham, UK
| | - Joanne Tarver
- College of Health and Life Sciences, Aston University, Birmingham, UK
| | - Chris Oliver
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
| | - Hayley Crawford
- Mental Health and Wellbeing Unit, Warwick Medical School, University of Warwick, Coventry, UK
- Cerebra Network for Neurodevelopmental Disorders, University of Birmingham, Birmingham, UK
| | - Caroline Richards
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
- Cerebra Network for Neurodevelopmental Disorders, University of Birmingham, Birmingham, UK
| | - Stacey Bissell
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
- Cerebra Network for Neurodevelopmental Disorders, University of Birmingham, Birmingham, UK
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3
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Leyva-Díaz E. CUT homeobox genes: transcriptional regulation of neuronal specification and beyond. Front Cell Neurosci 2023; 17:1233830. [PMID: 37744879 PMCID: PMC10515288 DOI: 10.3389/fncel.2023.1233830] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 08/23/2023] [Indexed: 09/26/2023] Open
Abstract
CUT homeobox genes represent a captivating gene class fulfilling critical functions in the development and maintenance of multiple cell types across a wide range of organisms. They belong to the larger group of homeobox genes, which encode transcription factors responsible for regulating gene expression patterns during development. CUT homeobox genes exhibit two distinct and conserved DNA binding domains, a homeodomain accompanied by one or more CUT domains. Numerous studies have shown the involvement of CUT homeobox genes in diverse developmental processes such as body axis formation, organogenesis, tissue patterning and neuronal specification. They govern these processes by exerting control over gene expression through their transcriptional regulatory activities, which they accomplish by a combination of classic and unconventional interactions with the DNA. Intriguingly, apart from their roles as transcriptional regulators, they also serve as accessory factors in DNA repair pathways through protein-protein interactions. They are highly conserved across species, highlighting their fundamental importance in developmental biology. Remarkably, evolutionary analysis has revealed that CUT homeobox genes have experienced an extraordinary degree of rearrangements and diversification compared to other classes of homeobox genes, including the emergence of a novel gene family in vertebrates. Investigating the functions and regulatory networks of CUT homeobox genes provides significant understanding into the molecular mechanisms underlying embryonic development and tissue homeostasis. Furthermore, aberrant expression or mutations in CUT homeobox genes have been associated with various human diseases, highlighting their relevance beyond developmental processes. This review will overview the well known roles of CUT homeobox genes in nervous system development, as well as their functions in other tissues across phylogeny.
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4
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Kurosaka H, Yamamoto S, Hirasawa K, Yanagishita T, Fujioka K, Yagasaki H, Nagata M, Ishihara Y, Yonei A, Asano Y, Nagata N, Tsujimoto T, Inubushi T, Yamamoto T, Sakai N, Yamashiro T. Craniofacial and dental characteristics of three Japanese individuals with genetically diagnosed SATB2-associated syndrome. Am J Med Genet A 2023. [PMID: 37141439 DOI: 10.1002/ajmg.a.63225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 04/12/2023] [Accepted: 04/20/2023] [Indexed: 05/06/2023]
Abstract
Craniofacial defects are one of the most frequent phenotypes in syndromic diseases. More than 30% of syndromic diseases are associated with craniofacial defects, which are important for the precise diagnosis of systemic diseases. Special AT-rich sequence-binding protein 2 (SATB2)-associated syndrome (SAS) is a rare syndromic disease associated with a wide variety of phenotypes, including intellectual disability and craniofacial defects. Among them, dental anomalies are the most frequently observed phenotype and thus becomes an important diagnostic criterion for SAS. In this report, we demonstrate three Japanese cases of genetically diagnosed SAS with detailed craniofacial phenotypes. The cases showed multiple dental problems, which have been previously reported to be linked to SAS, including abnormal crown morphologies and pulp stones. One case showed a characteristic enamel pearl at the root furcation. These phenotypes add new insights for differentiating SAS from other disorders.
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Affiliation(s)
- Hiroshi Kurosaka
- Department of Orthodontics and Dentofacial Orthopedics, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Sayuri Yamamoto
- Department of Orthodontics and Dentofacial Orthopedics, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Kyoko Hirasawa
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Tomoe Yanagishita
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Kaoru Fujioka
- Department of Pediatrics, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Hideaki Yagasaki
- Department of Pediatrics, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Miho Nagata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yasuki Ishihara
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Ayumi Yonei
- Department of Genetic Counseling Osaka University Hospital, Osaka, Japan
| | - Yoshihiro Asano
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Namiki Nagata
- Department of Orthodontics and Dentofacial Orthopedics, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Takayuki Tsujimoto
- Department of Orthodontics and Dentofacial Orthopedics, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Toshihiro Inubushi
- Department of Orthodontics and Dentofacial Orthopedics, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Toshiyuki Yamamoto
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Norio Sakai
- Department of Genetic Counseling Osaka University Hospital, Osaka, Japan
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Health Science, Child Healthcare and Genetic Science, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takashi Yamashiro
- Department of Orthodontics and Dentofacial Orthopedics, Osaka University Graduate School of Dentistry, Suita, Japan
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5
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Copelli MDM, Pairet E, Atique-Tacla M, Vieira TP, Appenzeller S, Helaers R, Vikkula M, Gil-da-Silva-Lopes VL. SATB2-Associated Syndrome Due to a c.715C>T:p(Arg239*) Variant in Adulthood: Natural History and Literature Review. Genes (Basel) 2023; 14:genes14040882. [PMID: 37107640 PMCID: PMC10137462 DOI: 10.3390/genes14040882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
SATB2-associated syndrome (SAS) is a rare condition, and it is characterized by severe developmental delay/intellectual disability, especially severe speech delay/or absence, craniofacial abnormalities, and behavioral problems. Most of the published reports are limited to children, with little information about the natural history of the disease and the possible novel signs and symptoms or behavioral changes in adulthood. We describe the management and follow-up of a 25-year-old male with SAS due to a de novo heterozygous nonsense variant SATB2:c.715C>T:p.(Arg239*) identified by whole-exome sequencing and review the literature. The case herein described contributes to a better characterization of the natural history of this genetic condition and in addition to the genotype-phenotype correlation of the SATB2:c.715C>T:p.(Arg239*) variant in SAS, highlights some particularities of its management.
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Affiliation(s)
- Matheus de Mello Copelli
- Department of Translational Medicine, Area of Medical Genetics and Genomic Medicine, University of Campinas (UNICAMP), Campinas CEP 13083-887, SP, Brazil
| | - Eleonore Pairet
- Human Molecular Genetics, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Milena Atique-Tacla
- Department of Translational Medicine, Area of Medical Genetics and Genomic Medicine, University of Campinas (UNICAMP), Campinas CEP 13083-887, SP, Brazil
| | - Társis Paiva Vieira
- Department of Translational Medicine, Area of Medical Genetics and Genomic Medicine, University of Campinas (UNICAMP), Campinas CEP 13083-887, SP, Brazil
| | - Simone Appenzeller
- Department of Orthopedics, Rheumatology and Traumatology, School of Medical Science, University of Campinas (UNICAMP), Campinas CEP 13083-887, SP, Brazil
| | - Raphaël Helaers
- Human Molecular Genetics, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Miikka Vikkula
- Human Molecular Genetics, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Vera Lúcia Gil-da-Silva-Lopes
- Department of Translational Medicine, Area of Medical Genetics and Genomic Medicine, University of Campinas (UNICAMP), Campinas CEP 13083-887, SP, Brazil
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6
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Singhal K, Dhamija S, Mukerji M. Exonized Alu repeats in the 3'UTR of a CYP20A1_Alu-LT transcript act as a miRNA sponge. BMC Res Notes 2023; 16:32. [PMID: 36895043 PMCID: PMC9996890 DOI: 10.1186/s13104-023-06289-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 02/14/2023] [Indexed: 03/11/2023] Open
Abstract
OBJECTIVE Alu repeats have gained huge importance in the creation and modification of regulatory networks. We previously reported a unique isoform of human CYP20A1 i.e. CYP20A1_Alu-LT with 23 Alu repeats exonized in its 9 kb long 3'UTR with 4742 potential binding sites for 994 miRNAs. The role of this transcript was hypothesized as a potential miRNA sponge in primary neurons as its expression correlated with that of 380 genes having shared miRNA sites and enriched in neuro-coagulopathy. This study provides experimental evidence for the miRNA sponge activity of CYP20A1_Alu-LT in neuronal cell lines. RESULTS We studied the Alu-rich fragment of the CYP20A1_Alu-LT extended 3'UTR with > 10 binding sites for miR-619-5p and miR-3677-3p. Enrichment of the Alu-rich fragment with Ago2 confirmed miRNA association of this transcript. Cloning the fragment downstream of a reporter gene led to a 90% decrease in luciferase activity. Overexpression and knockdown studies revealed a positive correlation between the expression of CYP20A1_Alu-LT and miR-619-5p / miR-3677-3p target genes. GAP43, one of the key modulators of nerve regeneration, was significantly altered by the expression of CYP20A1_Alu-LT. This study, for the first time, provides evidence for a unique regulatory function of exonized Alu repeats as miRNA sponges.
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Affiliation(s)
- Khushboo Singhal
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, 110025, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, Uttar Pradesh, India
| | - Sonam Dhamija
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, 110025, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, Uttar Pradesh, India
| | - Mitali Mukerji
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, 110025, New Delhi, India. .,Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, Uttar Pradesh, India. .,Department of Bioscience and Bioengineering, Indian Institute of Technology, 342037, Jodhpur, Rajasthan, India.
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7
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Lin GW, Liang YC, Wu P, Chen CK, Lai YC, Jiang TX, Haung YH, Chuong CM. Regional specific differentiation of integumentary organs: SATB2 is involved in α- and β-keratin gene cluster switching in the chicken. Dev Dyn 2022; 251:1490-1508. [PMID: 34240503 PMCID: PMC8742846 DOI: 10.1002/dvdy.396] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 06/30/2021] [Accepted: 06/30/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Animals develop skin regional specificities to best adapt to their environments. Birds are excellent models in which to study the epigenetic mechanisms that facilitate these adaptions. Patients suffering from SATB2 mutations exhibit multiple defects including ectodermal dysplasia-like changes. The preferential expression of SATB2, a chromatin regulator, in feather-forming compared to scale-forming regions, suggests it functions in regional specification of chicken skin appendages by acting on either differentiation or morphogenesis. RESULTS Retrovirus mediated SATB2 misexpression in developing feathers, beaks, and claws causes epidermal differentiation abnormalities (e.g. knobs, plaques) with few organ morphology alterations. Chicken β-keratins are encoded in 5 sub-clusters (Claw, Feather, Feather-like, Scale, and Keratinocyte) on Chromosome 25 and a large Feather keratin cluster on Chromosome 27. Type I and II α-keratin clusters are located on Chromosomes 27 and 33, respectively. Transcriptome analyses showed these keratins (1) are often tuned up or down collectively as a sub-cluster, and (2) these changes occur in a temporo-spatial specific manner. CONCLUSIONS These results suggest an organizing role of SATB2 in cluster-level gene co-regulation during skin regional specification.
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Affiliation(s)
- Gee-Way Lin
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Ya-Chen Liang
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- Integrative Stem Cell Center, China Medical University and Hospital, China Medical University, Taichung 40447, Taiwan
| | - Ping Wu
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Chih-Kuan Chen
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- The IEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung 402204, Taiwan
| | - Yung-Chih Lai
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- Integrative Stem Cell Center, China Medical University and Hospital, China Medical University, Taichung 40447, Taiwan
- Institute of New Drug Development, China Medical University, Taichung 40402, Taiwan
| | - Ting-Xin Jiang
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Yen-Hua Haung
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan
- TMU Research Center of Cell Therapy and Regeneration Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Cheng-Ming Chuong
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
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8
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Bissell S, Oliver C, Moss J, Heald M, Waite J, Crawford H, Kothari V, Rumbellow L, Walters G, Richards C. The behavioural phenotype of SATB2-associated syndrome: a within-group and cross-syndrome analysis. J Neurodev Disord 2022; 14:25. [PMID: 35350986 PMCID: PMC8966214 DOI: 10.1186/s11689-022-09426-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 02/14/2022] [Indexed: 11/10/2022] Open
Abstract
Background SATB2-associated syndrome (SAS) is a multisystem neurodevelopmental disorder characterised by intellectual disability, speech delay, and craniofacial anomalies. Although the clinical presentation of SAS is well-delineated, behaviours associated with SAS are less well-defined. Given the varied social profile reported in SAS of a ‘jovial’ predisposition and autistic behaviours, there may be phenotypic overlap with both Angelman syndrome (AS) and non-syndromal autism. This study aimed to describe behaviours in SAS in relation to chronological age and level of ability and contrast aspects of the behavioural phenotype with AS and non-syndromal autism. Methods Informant report questionnaire measures of behaviour, emotion, and autism characteristics were completed for 81 individuals with SAS (aged 1–36 years; 43 male). Within-group associations were analysed, and categorical data were compared between pre-school (1–5 years), school-age (6–15 years), and adolescent and adult SAS sub-groups (16 years and over). Cross-syndrome subscale and item-level analyses were conducted for 63 individuals with SAS (aged 1–27 years; 31 male), who were matched according to age and level of ability to 63 individuals with AS (aged 2–25 years; 32 male) and 63 individuals with non-syndromal autism (aged 3–26 years; 53 male). Results In SAS, higher rates of overactivity were moderately associated with lower self-help ability, and higher general anxiety scores were reported for males compared with females. Cross-syndrome subscale analyses uncovered several significant differences (p < .01), with comparatively low rates of stereotyped behaviour, overactivity, insistence on sameness and positive affect, and comparatively greater interest and pleasure and compulsive behaviour in individuals with SAS. Item-level analyses revealed a distinct profile of repetitive and autistic behaviours. Limitations Developmental analysis was based on a cross-sectional rather than a longitudinal research design, the contribution of pain and sleep to behaviour was not explored, and molecular genetic testing to determine genotype–phenotype behavioural relationships was not possible. Conclusions This study highlights the importance of behavioural comparisons to well-delineated groups and the utility of fine-grained item-level analyses to elucidate aspects of behaviour that might be syndrome related or shared across neurodevelopmental disorders. Future research is needed to further describe the distinctive repetitive and autistic behavioural phenotype in SAS. Supplementary Information The online version contains supplementary material available at 10.1186/s11689-022-09426-0.
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Affiliation(s)
- Stacey Bissell
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK.
| | - Chris Oliver
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
| | - Joanna Moss
- School of Psychology, University of Surrey, Guildford, Surrey, UK
| | - Mary Heald
- Blackpool Teaching Hospitals NHS Foundation Trust, Blackpool, Lancashire, UK
| | - Jane Waite
- School of Health and Life Sciences, Aston University, Birmingham, UK
| | - Hayley Crawford
- Mental Health and Wellbeing Unit, Warwick Medical School, University of Warwick, Coventry, UK
| | - Vishakha Kothari
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
| | - Lauren Rumbellow
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
| | - Grace Walters
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
| | - Caroline Richards
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK
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9
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Lo H, Ng W, Fong N, Lui CD, Lam C. Novel finding of lissencephaly and severe osteopenia in a Chinese patient with
SATB2
‐associated syndrome and a brief review of literature. Am J Med Genet A 2022; 188:2168-2172. [DOI: 10.1002/ajmg.a.62732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 02/26/2022] [Accepted: 03/02/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Hui‐Yin Lo
- Department of Pathology Princess Margaret Hospital Kowloon Hong Kong
| | - Wai‐Fu Ng
- Department of Pathology Hong Kong Children's Hospital Kowloon Hong Kong
| | - Nai‐Chung Fong
- Department of Paediatrics and Adolescent Medicine Princess Margaret Hospital Kowloon Hong Kong
| | - Choi‐Yu Dilys Lui
- Department of Radiology Princess Margaret Hospital Kowloon Hong Kong
| | - Ching‐Wan Lam
- Department of Pathology The University of Hong Kong, Queen Mary Hospital Pok Fu Lam Hong Kong
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10
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Brun NR, Salanga MC, Mora-Zamorano FX, Lamb DC, Goldstone JV, Stegeman JJ. Orphan cytochrome P450 20a1 CRISPR/Cas9 mutants and neurobehavioral phenotypes in zebrafish. Sci Rep 2021; 11:23892. [PMID: 34903767 PMCID: PMC8669017 DOI: 10.1038/s41598-021-03068-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 11/19/2021] [Indexed: 11/08/2022] Open
Abstract
Orphan cytochrome P450 (CYP) enzymes are those for which biological substrates and function(s) are unknown. Cytochrome P450 20A1 (CYP20A1) is the last human orphan P450 enzyme, and orthologs occur as single genes in every vertebrate genome sequenced to date. The occurrence of high levels of CYP20A1 transcripts in human substantia nigra and hippocampus and abundant maternal transcripts in zebrafish eggs strongly suggest roles both in the brain and during early embryonic development. Patients with chromosome 2 microdeletions including CYP20A1 show hyperactivity and bouts of anxiety, among other conditions. Here, we created zebrafish cyp20a1 mutants using CRISPR/Cas9, providing vertebrate models with which to study the role of CYP20A1 in behavior and other neurodevelopmental functions. The homozygous cyp20a1 null mutants exhibited significant behavioral differences from wild-type zebrafish, both in larval and adult animals. Larval cyp20a1-/- mutants exhibited a strong increase in light-simulated movement (i.e., light-dark assay), which was interpreted as hyperactivity. Further, the larvae exhibited mild hypoactivity during the adaptation period of the optomotor assays. Adult cyp20a1 null fish showed a pronounced delay in adapting to new environments, which is consistent with an anxiety paradigm. Taken together with our earlier morpholino cyp20a1 knockdown results, the results described herein suggest that the orphan CYP20A1 has a neurophysiological role.
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Affiliation(s)
- Nadja R Brun
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, 02543, USA
| | - Matthew C Salanga
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, 86011, USA
| | | | - David C Lamb
- Faculty of Medicine, Health and Life Sciences, Swansea University, Swansea, SA2 8PP, UK
| | - Jared V Goldstone
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, 02543, USA
| | - John J Stegeman
- Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, 02543, USA.
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11
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He CH, Zhang L, Song NN, Mei WY, Chen JY, Hu L, Zhang Q, Wang YB, Ding YQ. Satb2 Regulates EphA7 to Control Soma Spacing and Self-Avoidance of Cortical Pyramidal Neurons. Cereb Cortex 2021; 32:2321-2331. [PMID: 34546353 DOI: 10.1093/cercor/bhab321] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Soma spacing and dendritic arborization during brain development are key events for the establishment of proper neural circuitry and function. Transcription factor Satb2 is a molecular node in regulating the development of the cerebral cortex, as shown by the facts that Satb2 is required for the regionalization of retrosplenial cortex, the determination of callosal neuron fate, and the regulation of soma spacing and dendritic self-avoidance of cortical pyramidal neurons. In this study, we explored downstream effectors that mediate the Satb2-implicated soma spacing and dendritic self-avoidance. First, RNA-seq analysis of the cortex revealed differentially expressed genes between control and Satb2 CKO mice. Among them, EphA7 transcription was dramatically increased in layers II/III of Satb2 CKO cortex. Overexpression of EphA7 in the late-born cortical neurons of wild-type mice via in utero electroporation resulted in soma clumping and impaired self-avoidance of affected pyramidal neurons, which resembles the phenotypes caused by knockdown of Satb2 expression. Importantly, the phenotypes by Satb2 knockdown was rescued by reducing EphA7 expression in the cortex. Finally, ChIP and luciferase reporter assays indicated a direct suppression of EphA7 expression by Satb2. These findings provide new insights into the complexity of transcriptional regulation of the morphogenesis of cerebral cortex.
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Affiliation(s)
- Chun-Hui He
- Key Laboratory of Arrhythmias, Ministry of Education of China, East Hospital, Tongji University School of Medicine, Shanghai 200120, China.,Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai 200092, China
| | - Lei Zhang
- Key Laboratory of Arrhythmias, Ministry of Education of China, East Hospital, Tongji University School of Medicine, Shanghai 200120, China.,Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai 200092, China
| | - Ning-Ning Song
- Department of Laboratory Animal Science, Fudan University, Shanghai 200032, China.,State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Wan-Ying Mei
- Key Laboratory of Arrhythmias, Ministry of Education of China, East Hospital, Tongji University School of Medicine, Shanghai 200120, China.,Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai 200092, China
| | - Jia-Yin Chen
- Department of Laboratory Animal Science, Fudan University, Shanghai 200032, China.,State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Ling Hu
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Qiong Zhang
- Department of Laboratory Animal Science, Fudan University, Shanghai 200032, China.,State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Yu-Bing Wang
- Key Laboratory of Arrhythmias, Ministry of Education of China, East Hospital, Tongji University School of Medicine, Shanghai 200120, China.,Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai 200092, China
| | - Yu-Qiang Ding
- Key Laboratory of Arrhythmias, Ministry of Education of China, East Hospital, Tongji University School of Medicine, Shanghai 200120, China.,Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai 200092, China.,Department of Laboratory Animal Science, Fudan University, Shanghai 200032, China.,State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai 200032, China
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12
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Zarate YA, Bosanko KA, Thomas MA, Miller DT, Cusmano-Ozog K, Martinez-Monseny A, Curry CJ, Graham JM, Velsher L, Bekheirnia MR, Seidel V, Dedousis D, Mitchell AL, DiMarino AM, Riess A, Balasubramanian M, Fish JL, Caffrey AR, Fleischer N, Pierson TM, Lacro RV. Growth, development, and phenotypic spectrum of individuals with deletions of 2q33.1 involving SATB2. Clin Genet 2021; 99:547-557. [PMID: 33381861 DOI: 10.1111/cge.13912] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/18/2020] [Accepted: 12/28/2020] [Indexed: 02/06/2023]
Abstract
SATB2-Associated syndrome (SAS) is an autosomal dominant, multisystemic, neurodevelopmental disorder due to alterations in SATB2 at 2q33.1. A limited number of individuals with 2q33.1 contiguous deletions encompassing SATB2 (ΔSAS) have been described in the literature. We describe 17 additional individuals with ΔSAS, review the phenotype of 33 previously published individuals with 2q33.1 deletions (n = 50, mean age = 8.5 ± 7.8 years), and provide a comprehensive comparison to individuals with other molecular mechanisms that result in SAS (non-ΔSAS). Individuals in the ΔSAS group were often underweight for age (20/41 = 49%) with a progressive decline in weight (95% CI = -2.3 to -1.1, p < 0.0001) and height (95% CI = -2.3 to -1.0, p < 0.0001) Z-score means from birth to last available measurement. ΔSAS individuals were often noted to have a broad spectrum of facial dysmorphism. A composite image of ΔSAS individuals generated by automated image analysis was distinct as compared to matched controls and non-ΔSAS individuals. We also present additional genotype-phenotype correlations for individuals in the ΔSAS group such as an increased risk for aortic root/ascending aorta dilation and primary pulmonary hypertension for those individuals with contiguous gene deletions that include COL3A1/COL5A2 and BMPR2, respectively. Based on these findings, we provide additional care recommendations for individuals with ΔSAS variants.
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Affiliation(s)
- Yuri A Zarate
- Section of Genetics and Metabolism, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Katherine A Bosanko
- Section of Genetics and Metabolism, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Mary Ann Thomas
- Departments of Medical Genetics and Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - David T Miller
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Kristina Cusmano-Ozog
- Department of Pathology, Stanford University Medical Center, Stanford, California, USA
| | - Antonio Martinez-Monseny
- Department of Clinical Genetics and Rare Disease Paediatric Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Cynthia J Curry
- Genetic Medicine, Department of Pediatrics, University of California, San Francisco/Fresno, Fresno, California, USA
| | - John M Graham
- Medical Genetics, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Lea Velsher
- Genetics Division, North York General, Toronto, Ontario, Canada
| | - Mir Reza Bekheirnia
- Departments of Pediatrics and Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Veronica Seidel
- Clinical Genetics, Department of Pediatrics, HGU Gregorio Marañón, Madrid, Spain
| | - Demitrios Dedousis
- Department of Genetics and Genome Sciences, University Hospitals Center for Human Genetics, Cleveland, Ohio, USA
| | - Anna L Mitchell
- Department of Genetics and Genome Sciences, University Hospitals Center for Human Genetics, Cleveland, Ohio, USA
| | - Amy M DiMarino
- Division of Pediatric Pulmonology, UH Rainbow Babies and Children's Hospital, Cleveland, Ohio, USA
| | - Angelika Riess
- Institute of Medical Genetics and Applied Genomics, Medical faculty, University of Tuebingen, Tuebingen, Germany
| | - Meena Balasubramanian
- Sheffield Clinical Genetics Service, Sheffield Children's NHS Foundation Trust, Sheffield, UK
| | - Jennifer L Fish
- Department of Biological Sciences, University of Massachusetts Lowell, Lowell, Massachusetts, United States
| | - Aisling R Caffrey
- Health Outcomes, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island, USA
| | | | - Tyler Mark Pierson
- Departments of Pediatrics and Neurology, The Board of Governors Regenerative Medicine Institute, Cedars Sinai Medical Center, Los Angeles, California, USA
| | - Ronald V Lacro
- Department of Cardiology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
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13
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Hui AS, Chau MHK, Chan YM, Cao Y, Kwan AH, Zhu X, Kwok YK, Chen Z, Lao TT, Choy KW, Leung TY. The role of chromosomal microarray analysis among fetuses with normal karyotype and single system anomaly or nonspecific sonographic findings. Acta Obstet Gynecol Scand 2020; 100:235-243. [PMID: 32981064 DOI: 10.1111/aogs.14003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/19/2020] [Accepted: 09/17/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Chromosomal microarray analysis is recommended as the first-tier test for the evaluation of fetuses with structural anomalies. This study aims to investigate the incremental diagnostic yield of chromosomal microarray over conventional karyotyping analysis in fetuses with anomalies restricted to one anatomic system and those with nonspecific anomalies detected by sonography. MATERIAL AND METHODS This is a retrospective cohort analysis of 749 fetuses undergoing prenatal diagnosis for abnormal ultrasound findings isolated to one anatomic system and normal karyotype, utilizing chromosomal microarray. Overall, 495 (66%) fetuses had anomalies confined to one anatomic system and 254 (34%) had other nonspecific anomalies including increased nuchal translucency (≥3.5 mm), cystic hygroma, intrauterine growth restriction and hydrops fetalis. RESULTS Fetuses with ultrasound anomalies restricted to one anatomic system had a 3.0% risk of carrying a pathogenic copy number variant; the risk varied dependent on the anatomic system affected. Fetuses with confined anomalies of the cardiac system had the highest diagnostic yield at 4.6%, but there were none in the urogenital system. Fetuses with nonspecific ultrasound anomalies had the highest diagnostic yield in fetuses with an intrauterine growth restriction at 5.9%. Overall, fetuses with a nonspecific ultrasound anomaly were affected with pathogenic copy number variants in 1.6% in the cases. CONCLUSIONS The diagnostic yield of chromosomal microarray in fetuses with normal karyotype and ultrasound abnormality confined to a single anatomic system was highest if it involved cardiac defects or intrauterine growth restriction. This diagnostic yield ranges from 0% to 4.6% depending on the anatomic system involved. Chromosomal microarray has considerable diagnostic value in these pregnancies.
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Affiliation(s)
- Annie Sy Hui
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Matthew Hoi Kin Chau
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China.,Key Laboratory for Regenerative Medicine, Ministry of Education (Shenzhen Base), Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Yiu Man Chan
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China.,Adept Medical Center, Hong Kong SAR, China
| | - Ye Cao
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China.,Key Laboratory for Regenerative Medicine, Ministry of Education (Shenzhen Base), Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Angel Hw Kwan
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiaofan Zhu
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China.,Key Laboratory for Regenerative Medicine, Ministry of Education (Shenzhen Base), Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Yvonne K Kwok
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Zihan Chen
- Key Laboratory for Regenerative Medicine, Ministry of Education (Shenzhen Base), Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Terence T Lao
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Kwong Wai Choy
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China.,Key Laboratory for Regenerative Medicine, Ministry of Education (Shenzhen Base), Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.,The Chinese University of Hong Kong-Baylor College of Medicine Joint Center for Medical Genetics, The Chinese University of Hong Kong, China, Hong Kong SAR, China
| | - Tak Yeung Leung
- Department of Obstetrics and gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China.,Key Laboratory for Regenerative Medicine, Ministry of Education (Shenzhen Base), Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.,The Chinese University of Hong Kong-Baylor College of Medicine Joint Center for Medical Genetics, The Chinese University of Hong Kong, China, Hong Kong SAR, China
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14
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SATB2-associated syndrome: first report of a gonadal and somatic mosaicism for an intragenic copy number variation. Clin Dysmorphol 2020; 28:205-210. [PMID: 31425298 DOI: 10.1097/mcd.0000000000000293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Gonadal mosaicism has been reported in a variety of dominant or X-linked conditions and should be considered in all cases of apparent de-novo variation. Recently, some cases of supposed parental germline mosaicism have been shown to result from low-level somatic mosaicism. In most of the cases, mosaicism has been reported for pathogenic single nucleotide variants with only a few cases of copy number variation mosaicism described so far. Herein, we present the first case of parental somatic and gonadal copy number variation mosaicism in the SATB2 gene. We report three brothers presenting with the SATB2-associated syndrome. They all carry the same 121-kb heterozygous intragenic deletion of SATB2. Parental somatic mosaicism was detected by array-comparative genomic hybridization on a maternal blood sample and confirmed by Fluorescence in situ hybridization analysis on blood and buccal cells. This clinical report highlights the importance of investigating for parental somatic mosaicism to estimate the proper recurrence risk for subsequent pregnancy.
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15
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Satb2 is required for the regionalization of retrosplenial cortex. Cell Death Differ 2019; 27:1604-1617. [PMID: 31666685 PMCID: PMC7206047 DOI: 10.1038/s41418-019-0443-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 02/08/2023] Open
Abstract
The retrosplenial cortex (Rsp) is a transitional cortex located between the neocortex and archicortex, but the molecular mechanism specifying Rsp from the archicortex remains elusive. We here report that the transcription factor Satb2 is required for specifying Rsp identity during its morphogenesis. In Satb2 CKO mice, the boundary between the Rsp and archicortex [i.e., subiculum (SubC)] disappears as early as E17.5, and Rsp efferent projection is aberrant. Rsp-specific genes are lost, whereas SubC-specific genes are ectopically expressed in Rsp of Satb2 CKO mice. Furthermore, cell-autonomous role of Satb2 in maintaining Rsp neuron identity is revealed by inactivation of Satb2 in Rsp neurons. Finally, Satb2 represses the transcription of Nr4a2. The misexpression of Nr4a2 together with Ctip2 induces expression of SubC-specific genes in wild-type Rsp, and simultaneous knockdown of these two genes in Rsp Satb2-mutant cells prevents their fate transition to SubC identity. Thus, Satb2 serves as a determinant gene in the Rsp regionalization by repressing Nr4a2 and Ctip2 during cortical development.
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16
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Thomason A, Pankey E, Nutt B, Caffrey AR, Zarate YA. Speech, language, and feeding phenotypes of
SATB2
‐associated syndrome. Clin Genet 2019; 96:485-492. [DOI: 10.1111/cge.13619] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/24/2019] [Accepted: 08/01/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Ashlen Thomason
- Audiology/Speech Pathology DepartmentArkansas Children's Hospital Little Rock Arkansas
| | - Emily Pankey
- Audiology/Speech Pathology DepartmentArkansas Children's Hospital Little Rock Arkansas
| | - Beth Nutt
- Audiology/Speech Pathology DepartmentArkansas Children's Hospital Little Rock Arkansas
| | - Aisling R. Caffrey
- Health Outcomes Department, College of PharmacyUniversity of Rhode Island Kingston Rhode Island
| | - Yuri A. Zarate
- Section of Genetics and MetabolismUniversity of Arkansas for Medical Sciences Little Rock Arkansas
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17
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Qian Y, Liu J, Yang Y, Chen M, Jin C, Chen P, Lei Y, Pan H, Dong M. Paternal Low-Level Mosaicism-Caused SATB2-Associated Syndrome. Front Genet 2019; 10:630. [PMID: 31333717 PMCID: PMC6614923 DOI: 10.3389/fgene.2019.00630] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 06/17/2019] [Indexed: 12/27/2022] Open
Abstract
Mutations of SATB2 (OMIM#608148) gene at 2q33.1 have been associated with the autosomal dominant SATB2-associated syndrome (SAS), which is still short of comprehensive diagnosis technologies for small deletions and low-level mosaicism. In this Chinese Han family, single nucleotide polymorphism array identified a 4.9-kb deletion in the SATB2 gene in two consecutive siblings exhibiting obvious developmental delay and dental abnormalities but failed to find so in their parents. Prenatal diagnosis revealed that their third child carried the same deletion in SATB2 and the pregnancy was terminated. To determine the genetic causes behind the inheritance of SATB2 deletion, gap-PCR was performed on peripheral blood-derived genomic DNA of the family and semen-derived DNA from the father. Gap-PCR that revealed the deletions in the two affected siblings were inherited from the father, while the less intense mutant band indicated the mosaicism of this mutation in the father. The deletion was 3,013 bp in size, spanning from chr2: 200,191,313-200,194,324 (hg19), and covering the entire exon 9 and part of intron 8 and 9 sequences. Droplet digital PCR demonstrated mosaicism percentage of 13.2% and 16.7% in peripheral blood-derived genomic DNA and semen-derived DNA of the father, respectively. Hereby, we describe a family of special AT-rich sequence-binding protein 2-associated syndrome caused by paternal low-level mosaicism and provide effective diagnostic technologies for intragenic deletions.
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Affiliation(s)
- Yeqing Qian
- Women's Hospital, School of Medicine Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Jiao Liu
- Prenatal Diagnosis Center, Lishui Maternity and Child Health Care Hospital, Lishui, China
| | - Yanmei Yang
- Women's Hospital, School of Medicine Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Min Chen
- Women's Hospital, School of Medicine Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Chunlei Jin
- Prenatal Diagnosis Center, Lishui Maternity and Child Health Care Hospital, Lishui, China
| | - Penglong Chen
- Prenatal Diagnosis Center, Lishui Maternity and Child Health Care Hospital, Lishui, China
| | - Yongliang Lei
- Prenatal Diagnosis Center, Lishui Maternity and Child Health Care Hospital, Lishui, China
| | - Hangyi Pan
- Women's Hospital, School of Medicine Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Minyue Dong
- Women's Hospital, School of Medicine Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
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18
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Le Coz C, Nolan BE, Trofa M, Kamsheh AM, Khokha MK, Lakhani SA, Novelli A, Zackai EH, Sullivan KE, Briuglia S, Bhatti TR, Romberg N. Cytotoxic T-Lymphocyte-Associated Protein 4 Haploinsufficiency-Associated Inflammation Can Occur Independently of T-Cell Hyperproliferation. Front Immunol 2018; 9:1715. [PMID: 30087679 PMCID: PMC6066513 DOI: 10.3389/fimmu.2018.01715] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/12/2018] [Indexed: 12/29/2022] Open
Abstract
Located contiguously on the long arm of the second chromosome are gene paralogs encoding the immunoglobulin-family co-activation receptors CD28 and cytotoxic T-lymphocyte-associated protein 4 (CTLA4). CD28 and CTLA4 share the same B7 ligands yet each provides opposing proliferative signals to T cells. Herein, we describe for the first time two unrelated subjects with coexisting CD28 and CTLA4 haploinsufficiency due to heterozygous microdeletions of chromosome 2q. Although their clinical phenotype, multi-organ inflammatory disease, is superficially similar to that of CTLA4 haploinsufficient autoimmune lymphoproliferative syndrome type V (ALPS5) patients, we demonstrate our subjects’ underlying immunopathology to be distinct. Unlike ALPS5 T cells which hyperproliferate to T-cell receptor-mediated activation and infiltrate organs, T cells from our subjects are hypoproliferative and do not. Instead of T cell infiltrates, biopsies of affected subject tissues demonstrated infiltrates of lineage negative lymphoid cells. This histologic feature correlated with significant increases in circulating type 3 innate lymphoid cells (ILC3s) and ILC3 cytokines, interleukin 22, and interleukin-17A. CTLA4-Ig monotherapy, which we trialed in one subject, was remarkably effective in controlling inflammatory diseases, normalizing ILC3 frequencies, and reducing ILC3 cytokine concentrations.
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Affiliation(s)
- Carole Le Coz
- Division of Immunology and Allergy, The Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Brian E Nolan
- Division of Rheumatology, The Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Melissa Trofa
- Division of Immunology and Allergy, The Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Alicia M Kamsheh
- Division of Immunology and Allergy, The Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Mustafa K Khokha
- Department of Genetics, Yale University School of Medicine, New Haven, CT, United States.,Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States.,The Pediatric Genomics Discovery Program, Yale University School of Medicine, New Haven, CT, United States
| | - Saquib A Lakhani
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States.,The Pediatric Genomics Discovery Program, Yale University School of Medicine, New Haven, CT, United States
| | - Antonio Novelli
- Laboratory of Molecular Genetics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Elaine H Zackai
- Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA, United States.,Department of Pediatrics, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
| | - Kathleen E Sullivan
- Division of Immunology and Allergy, The Children's Hospital of Philadelphia, Philadelphia, PA, United States.,Department of Pediatrics, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
| | - Silvana Briuglia
- Department of Biomedical Science, University of Messina, Messina, Italy
| | - Tricia R Bhatti
- Department of Pediatrics, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States.,Division of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Neil Romberg
- Division of Immunology and Allergy, The Children's Hospital of Philadelphia, Philadelphia, PA, United States.,Department of Pediatrics, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
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19
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Schmoeckel E, Kirchner T, Mayr D. SATB2 is a supportive marker for the differentiation of a primary mucinous tumor of the ovary and an ovarian metastasis of a low-grade appendiceal mucinous neoplasm (LAMN): A series of seven cases. Pathol Res Pract 2017; 214:426-430. [PMID: 29487003 DOI: 10.1016/j.prp.2017.12.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/07/2017] [Accepted: 12/11/2017] [Indexed: 11/19/2022]
Abstract
The differentiation between a primary mucinous ovarian neoplasm and an extra-ovarian metastasis in the ovary is often challenging in the histopathologic practice. Among various ovarian metastases from the gastro-intestinal tract the low-grade appendiceal mucinous neoplasm (LAMN) is an important differential diagnosis to consider particularly in case of pseudomyxoma peritonei. A newly recognized marker in the routine diagnostic of a mucinous neoplasm in the ovary is SATB2 (Special AT-rich sequence-binding protein 2). The expression of SATB2 is, within cells of epithelial lineages, mainly restricted to the lower gastro-intestinal tract, indicating colorectal or appendiceal cancer origin. We report seven cases of LAMN, which clinically became apparent due to ovarian metastases in context of pseudomyxoma peritonei or at least small foci of peritoneal tumor spread. An immunohistochemical marker-panel including SATB2, CDX2, CK20, CK7, PAX8, ER and PR revealed a strong expression of SATB2 in all seven cases. On the contrary SATB2-negativity could be demonstrated in the 40 cases of mucinous borderline tumors and primary mucinous carcinomas of the ovary. The histopathologic tentative diagnosis of an ovarian metastasis of LAMN could be confirmed in the findings of the Appendix in six of seven cases. This report supports SATB2 as an additional diagnostic marker for the diagnosis of an ovarian manifestation of LAMN.
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Affiliation(s)
- Elisa Schmoeckel
- Institute of Pathology, Faculty of Medicine, LMU Munich, Germany.
| | - Thomas Kirchner
- Institute of Pathology, Faculty of Medicine, LMU Munich, Germany
| | - Doris Mayr
- Institute of Pathology, Faculty of Medicine, LMU Munich, Germany
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20
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Advani HV, Barrett AN, Evans MI, Choolani M. Challenges in non-invasive prenatal screening for sub-chromosomal copy number variations using cell-free DNA. Prenat Diagn 2017; 37:1067-1075. [PMID: 28950403 DOI: 10.1002/pd.5161] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 08/23/2017] [Accepted: 09/16/2017] [Indexed: 12/14/2022]
Abstract
Non-invasive prenatal screening (NIPS) has revolutionized the approach to prenatal fetal aneuploidy screening. Many commercial providers now offer analyses for sub-chromosomal copy number variations (CNVs). Here, we review the use of NIPS in the context of screening for microdeletions and microduplications, issues surrounding the choice of disorders tested for, and the advantages and disadvantages associated with the inclusion of microdeletions to current NIPS. Several studies have claimed benefits; however, we suggest that microdeletions have not demonstrated a low enough false positive rate to be deemed practical or ethically acceptable, especially considering their low positive predictive values. Because a positive NIPS result should be confirmed using diagnostic techniques, and false positive rates are as high as 90% for some microdeletions, diagnostic testing seems preferable when the goal is to maximize the detection of microdeletion or microduplication syndromes.
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Affiliation(s)
- Henna V Advani
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Angela N Barrett
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Mark I Evans
- Department of Obstetrics and Gynecology, Mt. Sinai School of Medicine, New York, NY, USA.,Comprehensive Genetics and Fetal Medicine Foundation of America, New York, NY, USA
| | - Mahesh Choolani
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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21
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Simioni M, Artiguenave F, Meyer V, Sgardioli IC, Viguetti-Campos NL, Lopes Monlleó I, Maciel-Guerra AT, Steiner CE, Gil-da-Silva-Lopes VL. Genomic Investigation of Balanced Chromosomal Rearrangements in Patients with Abnormal Phenotypes. Mol Syndromol 2017; 8:187-194. [PMID: 28690484 DOI: 10.1159/000477084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2017] [Indexed: 11/19/2022] Open
Abstract
Balanced chromosomal rearrangements (BCR) are associated with abnormal phenotypes in approximately 6% of balanced translocations and 9.4% of balanced inversions. Abnormal phenotypes can be caused by disruption of genes at the breakpoints, deletions, or positional effects. Conventional cytogenetic techniques have a limited resolution and do not enable a thorough genetic investigation. Molecular techniques applied to BCR carriers can contribute to the characterization of this type of chromosomal rearrangement and to the phenotype-genotype correlation. Fifteen individuals among 35 with abnormal phenotypes and BCR were selected for further investigation by molecular techniques. Chromosomal rearrangements involved 11 reciprocal translocations, 3 inversions, and 1 balanced insertion. Array genomic hybridization (AGH) was performed and genomic imbalances were detected in 20% of the cases, 1 at a rearrangement breakpoint and 2 further breakpoints in other chromosomes. Alterations were further confirmed by FISH and associated with the phenotype of the carriers. In the analyzed cases not showing genomic imbalances by AGH, next-generation sequencing (NGS), using whole genome libraries, prepared following the Illumina TruSeq DNA PCR-Free protocol (Illumina®) and then sequenced on an Illumina HiSEQ 2000 as 150-bp paired-end reads, was done. The NGS results suggested breakpoints in 7 cases that were similar or near those estimated by karyotyping. The genes overlapping 6 breakpoint regions were analyzed. Follow-up of BCR carriers would improve the knowledge about these chromosomal rearrangements and their consequences.
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Affiliation(s)
- Milena Simioni
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | | | | | - Ilária C Sgardioli
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Nilma L Viguetti-Campos
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Isabella Lopes Monlleó
- Clinical Genetics Service, Faculty of Medicine, University Hospital, Federal University of Alagoas (UFAL), Maceió, Brazil
| | - Andréa T Maciel-Guerra
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Carlos E Steiner
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Vera L Gil-da-Silva-Lopes
- Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
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22
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Li Y, You QL, Zhang SR, Huang WY, Zou WJ, Jie W, Li SJ, Liu JH, Lv CY, Cong J, Hu YY, Gao TM, Li JM. Satb2 Ablation Impairs Hippocampus-Based Long-Term Spatial Memory and Short-Term Working Memory and Immediate Early Genes (IEGs)-Mediated Hippocampal Synaptic Plasticity. Mol Neurobiol 2017:10.1007/s12035-017-0531-5. [PMID: 28421537 DOI: 10.1007/s12035-017-0531-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/06/2017] [Indexed: 10/19/2022]
Abstract
Special AT-rich sequence-binding protein 2 (Satb2) is a protein binding to the matrix attachment regions of DNA and important for gene regulation. Patients with SATB2 mutation usually suffer moderate to severe mental retardation. However, the mechanisms for the defects of intellectual activities in patients with SATB2 mutation are largely unclear. Here we established the heterozygous Satb2 mutant mice and Satb2 conditional knockout mice to mimic the patients with SATB2 mutation and figured out the role of Satb2 in mental activities. We found that the spatial memory and working memory were significantly damaged in the heterozygous Satb2 mutant mice, early postnatal Satb2-deficient mice (CaMKIIα-Cre+Satb2fl/fl mice), and adult Satb2 ablation mice (Satb2fl/fl mice injected with CaMKIIα-Cre virus). Functionally, late phase long-term potentiation (L-LTP) in these Satb2 mutant mice was greatly impaired. Morphologically, in CA1 neurons of CaMKIIα-Cre+Satb2fl/fl mice, we found decreased spine density of the basal dendrites and less branches of apical dendrites that extended into lacunar molecular layer. Mechanistically, expression levels of immediate early genes (IEGs) including Fos, FosB, and Egr1 were significantly decreased after Satb2 deletion. And, Satb2 could regulate expression of FosB by binding to the promoter of FosB directly. In general, our study uncovers that Satb2 plays an important role in spatial memory and working memory by regulating IEGs-mediated hippocampal synaptic plasticity.
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Affiliation(s)
- Ying Li
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Guangzhou, 510120, People's Republic of China
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
- Department of Pathology, Chancheng Central Hospital, Foshan, 528031, People's Republic of China
| | - Qiang-Long You
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Sheng-Rong Zhang
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Wei-Yuan Huang
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Wen-Jun Zou
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Wei Jie
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Shu-Ji Li
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Ji-Hong Liu
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Chuang-Ye Lv
- College of Clinical Medical, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Jin Cong
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Yu-Ying Hu
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Tian-Ming Gao
- State Key Laboratory of Organ Failure Research, Key Laboratory of Psychiatric Disorders of Guangdong Province, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China.
| | - Jian-Ming Li
- Department of Pathology, Sun Yat-Sen Memorial Hospital, Guangzhou, 510120, People's Republic of China.
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China.
- Department of Pathology, Soochow University Medical School, Suzhou, 215123, People's Republic of China.
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23
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Zarate YA, Fish JL. SATB2-associated syndrome: Mechanisms, phenotype, and practical recommendations. Am J Med Genet A 2016; 173:327-337. [PMID: 27774744 PMCID: PMC5297989 DOI: 10.1002/ajmg.a.38022] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 09/29/2016] [Indexed: 12/11/2022]
Abstract
The SATB2‐associated syndrome is a recently described syndrome characterized by developmental delay/intellectual disability with absent or limited speech development, craniofacial abnormalities, behavioral problems, dysmorphic features, and palatal and dental abnormalities. Alterations of the SATB2 gene can result from a variety of different mechanisms that include contiguous deletions, intragenic deletions and duplications, translocations with secondary gene disruption, and point mutations. The multisystemic nature of this syndrome demands a multisystemic approach and we propose evaluation and management guidelines. The SATB2‐associated syndrome registry has now been started and that will allow gathering further clinical information and refining the provided surveillance recommendations. © 2016 The Authors. American Journal of Medical Genetics Part A Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Yuri A Zarate
- Section of Genetics and Metabolism, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Jennifer L Fish
- Department of Biological Sciences, University of Massachusetts Lowell, Lowell, Massachusetts
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24
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Sharma P, Gupta N, Chowdhury MR, Sapra S, Ghosh M, Gulati S, Kabra M. Application of chromosomal microarrays in the evaluation of intellectual disability/global developmental delay patients – A study from a tertiary care genetic centre in India. Gene 2016; 590:109-19. [DOI: 10.1016/j.gene.2016.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 06/07/2016] [Accepted: 06/08/2016] [Indexed: 01/21/2023]
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25
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Hilde KL, Levine AJ, Hinckley CA, Hayashi M, Montgomery JM, Gullo M, Driscoll SP, Grosschedl R, Kohwi Y, Kohwi-Shigematsu T, Pfaff SL. Satb2 Is Required for the Development of a Spinal Exteroceptive Microcircuit that Modulates Limb Position. Neuron 2016; 91:763-776. [PMID: 27478017 DOI: 10.1016/j.neuron.2016.07.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 05/11/2016] [Accepted: 06/07/2016] [Indexed: 12/12/2022]
Abstract
Motor behaviors such as walking or withdrawing the limb from a painful stimulus rely upon integrative multimodal sensory circuitry to generate appropriate muscle activation patterns. Both the cellular components and the molecular mechanisms that instruct the assembly of the spinal sensorimotor system are poorly understood. Here we characterize the connectivity pattern of a sub-population of lamina V inhibitory sensory relay neurons marked during development by the nuclear matrix and DNA binding factor Satb2 (ISR(Satb2)). ISR(Satb2) neurons receive inputs from multiple streams of sensory information and relay their outputs to motor command layers of the spinal cord. Deletion of the Satb2 transcription factor from ISR(Satb2) neurons perturbs their cellular position, molecular profile, and pre- and post-synaptic connectivity. These alterations are accompanied by abnormal limb hyperflexion responses to mechanical and thermal stimuli and during walking. Thus, Satb2 is a genetic determinant that mediates proper circuit development in a core sensory-to-motor spinal network.
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Affiliation(s)
- Kathryn L Hilde
- Gene Expression Laboratory and the Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA, 92037, USA
| | - Ariel J Levine
- Gene Expression Laboratory and the Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA, 92037, USA
| | - Christopher A Hinckley
- Gene Expression Laboratory and the Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA, 92037, USA
| | - Marito Hayashi
- Gene Expression Laboratory and the Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA, 92037, USA
| | - Jessica M Montgomery
- Gene Expression Laboratory and the Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA, 92037, USA
| | - Miriam Gullo
- Gene Expression Laboratory and the Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA, 92037, USA
| | - Shawn P Driscoll
- Gene Expression Laboratory and the Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA, 92037, USA
| | - Rudolf Grosschedl
- Max Planck Institute of Immunobiology and Epigenetics, Department of Cellular and Molecular Immunology, 79108 Freiburg, Germany
| | - Yoshinori Kohwi
- Department of Orofacial Sciences, University of California, San Francisco, CA 94143, USA
| | | | - Samuel L Pfaff
- Gene Expression Laboratory and the Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines, La Jolla, CA, 92037, USA.
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26
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Boone PM, Chan YM, Hunter JV, Pottkotter LE, Davino NA, Yang Y, Beuten J, Bacino CA. Increased bone turnover, osteoporosis, progressive tibial bowing, fractures, and scoliosis in a patient with a final-exon SATB2 frameshift mutation. Am J Med Genet A 2016; 170:3028-3032. [PMID: 27409069 PMCID: PMC10080586 DOI: 10.1002/ajmg.a.37847] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 07/01/2016] [Indexed: 12/31/2022]
Abstract
Haploinsufficiency of SATB2 causes cleft palate, intellectual disability with deficient speech, facial and dental abnormalities, and other variable features known collectively as SATB2-associated syndrome. This phenotype was accompanied by osteoporosis, fractures, and tibial bowing in two previously reported adult patients; each possessed SATB2 mutations either predicted or demonstrated to escape nonsense-mediated decay, suggesting that the additional bone defects result from a dominant negative effect and/or age-dependent penetrance. These hypotheses remain to be confirmed, as do the specific downstream defects causing bone abnormalities. We report a SATB2 mutation (c.2018dupA; p.(H673fs)) in a 15-year-old patient whose SATB2-associated syndrome phenotype is accompanied by osteoporosis, fractures, progressive tibial bowing, and scoliosis. As this homeodomain-disrupting and predicted truncating mutation resides within the final exon of SATB2, escape from nonsense-mediated decay is likely. Thus, we provide further evidence of bone phenotypes beyond those typically associated with SATB2-associated syndrome in individuals with potential dominant-negative SATB2 alleles, as well as evidence for age-dependence of bone features. Elevations in alkaline phosphatase, urinary N-telopeptide/creatinine ratio, and osteocalcin in the patient indicate increased bone turnover. We propose surveillance and treatment with osteoclast inhibitors to prevent fractures and to slow progressive bone deformities. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Philip M Boone
- Department of Molecular and Human Genetics, Baylor College of Medicine
| | - Yiu Man Chan
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | | | | | - Nelson A Davino
- Department of Orthopedic Surgery, UT Health Science Center at Houston, Houston, Texas
| | - Yaping Yang
- Department of Molecular and Human Genetics, Baylor College of Medicine.,Medical Genetics Laboratories, Baylor College of Medicine, Houston, Texas
| | - Joke Beuten
- Department of Molecular and Human Genetics, Baylor College of Medicine.,Medical Genetics Laboratories, Baylor College of Medicine, Houston, Texas
| | - Carlos A Bacino
- Department of Molecular and Human Genetics, Baylor College of Medicine. .,Texas Children's Hospital, Houston, Texas. .,Medical Genetics Laboratories, Baylor College of Medicine, Houston, Texas.
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27
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Casanova EL, Sharp JL, Chakraborty H, Sumi NS, Casanova MF. Genes with high penetrance for syndromic and non-syndromic autism typically function within the nucleus and regulate gene expression. Mol Autism 2016; 7:18. [PMID: 26985359 PMCID: PMC4793536 DOI: 10.1186/s13229-016-0082-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 03/01/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Intellectual disability (ID), autism, and epilepsy share frequent yet variable comorbidities with one another. In order to better understand potential genetic divergence underlying this variable risk, we studied genes responsible for monogenic IDs, grouped according to their autism and epilepsy comorbidities. METHODS Utilizing 465 different forms of ID with known molecular origins, we accessed available genetic databases in conjunction with gene ontology (GO) to determine whether the genetics underlying ID diverge according to its comorbidities with autism and epilepsy and if genes highly penetrant for autism or epilepsy share distinctive features that set them apart from genes that confer comparatively variable or no apparent risk. RESULTS The genetics of ID with autism are relatively enriched in terms associated with nervous system-specific processes and structural morphogenesis. In contrast, we find that ID with highly comorbid epilepsy (HCE) is modestly associated with lipid metabolic processes while ID without autism or epilepsy comorbidity (ID only) is enriched at the Golgi membrane. Highly comorbid autism (HCA) genes, on the other hand, are strongly enriched within the nucleus, are typically involved in regulation of gene expression, and, along with IDs with more variable autism, share strong ties with a core protein-protein interaction (PPI) network integral to basic patterning of the CNS. CONCLUSIONS According to GO terminology, autism-related gene products are integral to neural development. While it is difficult to draw firm conclusions regarding IDs unassociated with autism, it is clear that the majority of HCA genes are tightly linked with general dysregulation of gene expression, suggesting that disturbances to the chronology of neural maturation and patterning may be key in conferring susceptibility to autism spectrum conditions.
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Affiliation(s)
- Emily L. Casanova
- />Department of Biomedical Sciences, University of South Carolina, South Carolina, USA
- />Department of Pediatrics, Greenville Health System, Patewood Medical Campus, 200A Patewood Dr, Greenville, SC 29615 USA
| | - Julia L. Sharp
- />Department of Mathematical Sciences, Clemson University, Clemson, USA
| | - Hrishikesh Chakraborty
- />Department of Biostatistics and Epidemiology, University of South Carolina, South Carolina, USA
| | - Nahid Sultana Sumi
- />Department of Biostatistics and Epidemiology, University of South Carolina, South Carolina, USA
| | - Manuel F. Casanova
- />Department of Biomedical Sciences, University of South Carolina, South Carolina, USA
- />Department of Pediatrics, Greenville Health System, Patewood Medical Campus, 200A Patewood Dr, Greenville, SC 29615 USA
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28
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Mohamad Shah NS, Salahshourifar I, Sulong S, Wan Sulaiman WA, Halim AS. Discovery of candidate genes for nonsyndromic cleft lip palate through genome-wide linkage analysis of large extended families in the Malay population. BMC Genet 2016; 17:39. [PMID: 26868259 PMCID: PMC4751652 DOI: 10.1186/s12863-016-0345-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 02/02/2016] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Nonsyndromic orofacial clefts are one of the most common birth defects worldwide. It occurs as a result of genetic or environmental factors. This study investigates the genetic contribution to nonsyndromic cleft lip and/or palate through the analysis of family pedigrees. Candidate genes associated with the condition were identified from large extended families from the Malay population. RESULTS A significant nonparametric linkage (NPL) score was detected in family 100. Other suggestive NPL and logarithm of the odds (LOD) scores were attained from families 50, 58, 99 and 100 under autosomal recessive mode. Heterogeneity LOD (HLOD) score ≥ 1 was determined for all families, confirming genetic heterogeneity of the population and indicating that a proportion of families might be linked to each other. Several candidate genes in linkage intervals were determined; LPHN2 at 1p31, SATB2 at 2q33.1-q35, PVRL3 at 3q13.3, COL21A1 at 6p12.1, FOXP2 at 7q22.3-q33, FOXG1 and HECTD1 at 14q12 and TOX3 at 16q12.1. CONCLUSIONS We have identified several novel and known candidate genes for nonsyndromic cleft lip and/or palate through genome-wide linkage analysis. Further analysis of the involvement of these genes in the condition will shed light on the disease mechanism. Comprehensive genetic testing of the candidate genes is warranted.
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Affiliation(s)
| | - Iman Salahshourifar
- Department of Biology, School of Basic Sciences, Science and Research Branch, Islamic Azad University, Isfahan, Iran.
| | - Sarina Sulong
- Human Genome Center, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
| | - Wan Azman Wan Sulaiman
- Reconstructive Science Unit, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
| | - Ahmad Sukari Halim
- School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kelantan, Malaysia.
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29
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Cytochrome P450 20A1 in zebrafish: Cloning, regulation and potential involvement in hyperactivity disorders. Toxicol Appl Pharmacol 2016; 296:73-84. [PMID: 26853319 DOI: 10.1016/j.taap.2016.02.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/29/2016] [Accepted: 02/01/2016] [Indexed: 12/17/2022]
Abstract
Cytochrome P450 (CYP) enzymes for which there is no functional information are considered "orphan" CYPs. Previous studies showed that CYP20A1, an orphan, is expressed in human hippocampus and substantia nigra, and in zebrafish (Danio rerio) CYP20A1 maternal transcript occurs in eggs, suggesting involvement in brain and in early development. Moreover, hyperactivity is reported in humans with chromosome 2 microdeletions including CYP20A1. We examined CYP20A1 in zebrafish, including impacts of chemical exposure on expression. Zebrafish CYP20A1 cDNA was cloned, sequenced, and aligned with cloned human CYP20A1 and predicted vertebrate orthologs. CYP20A1s share a highly conserved N-terminal region and unusual sequences in the I-helix and the heme-binding CYP signature motifs. CYP20A1 mRNA expression was observed in adult zebrafish organs including the liver, heart, gonads, spleen and brain, as well as the eye and optic nerve. Putative binding sites in proximal promoter regions of CYP20A1s, and response of zebrafish CYP20A1 to selected nuclear and xenobiotic receptor agonists, point to up-regulation by agents involved in steroid hormone response, cholesterol and lipid metabolism. There also was a dose-dependent reduction of CYP20A1 expression in embryos exposed to environmentally relevant levels of methylmercury. Morpholino knockdown of CYP20A1 in developing zebrafish resulted in behavioral effects, including hyperactivity and a slowing of the optomotor response in larvae. The results suggest that altered expression of CYP20A1 might be part of a mechanism linking methylmercury exposure to neurobehavioral deficits. The expanded information on CYP20A1 brings us closer to "deorphanization", that is, identifying CYP20A1 functions and its roles in health and disease.
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30
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Gregoric Kumperscak H, Krgovic D, Vokac NK. Specific behavioural phenotype and secondary cognitive decline as a result of an 8.6 Mb deletion of 2q32.2q33.1. J Int Med Res 2016; 44:395-402. [PMID: 26811410 PMCID: PMC5580054 DOI: 10.1177/0300060515595651] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 06/21/2015] [Indexed: 12/11/2022] Open
Abstract
Chromosomal abnormalities involving 2q32q33 deletions are very rare and present with a specific phenotype. This case report describes a 37-year-old female patient with 2q32q33 microdeletion syndrome presenting with the characteristic features, but with the addition of secondary cognitive decline. Molecular karyotyping was performed on the patient and her parents. It revealed an 8.6 megabase deletion with the proximal breakpoint in the chromosome band 2q32.2 and the distal breakpoint in 2q33.1. The deletion encompassed 22 known genes, including the GLS, MYO1B, TMEFF2, PGAP1 and SATB2 genes. The observed deletion was confirmed using a paralogue ratio test. This case report provides further evidence that the SATB2 gene, together with GLS, MYO1B, TMEFF2 and possibly PGAP1, is a crucial gene in 2q32q33 microdeletion syndrome. The SATB2 gene seems to be crucial for the behavioural problems noted in our case, but deletion of the GLS, MYO1B and TMEFF2 genes presumably contributed to the more complex behavioural characteristics observed. Our patient is also, to our knowledge, the only patient with 2q32q33 microdeletion syndrome with secondary cognitive decline.
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Affiliation(s)
| | | | - Nadja Kokalj Vokac
- University of Maribor, Faculty of Medicine, Maribor, Slovenia and Laboratory of Medical Genetics, University Clinical Centre Maribor, Maribor, Slovenia
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31
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Lee JS, Yoo Y, Lim BC, Kim KJ, Choi M, Chae JH. SATB2-associated syndrome presenting with Rett-like phenotypes. Clin Genet 2016; 89:728-32. [PMID: 26596517 DOI: 10.1111/cge.12698] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 11/18/2015] [Accepted: 11/19/2015] [Indexed: 11/30/2022]
Abstract
The SATB2-associated syndrome (SAS) was proposed recently, after the SATB2 gene was initially discovered to be associated with isolated cleft palate. This syndrome is characterized by intellectual disability with delayed speech development, facial dysmorphism, cleft or high-arched palate, and dentition problems. Here, we describe two novel SATB2 sequence variants in two unrelated patients presenting with Rett-like phenotypes. We performed trio-based whole-exome sequencing in a 17-month-old girl presenting with severe retardation and Rett-like phenotypes, which revealed a de novo missense variant in SATB2 (p.Glu396Gln). Moreover, targeted sequencing of the SATB2 gene was performed in a 2-year-old girl with severe psychomotor retardation, facial hypotonia, and cleft palate who also exhibited some features of Rett syndrome. A nonsense variant in SATB2 was identified in this patient (p.Arg459*). This study expanded the clinical and genetic spectrum of SAS. SATB2 variants should be considered in cases with psychomotor retardation alone or in any cases with Rett-like phenotypes, regardless of the typical features of SAS such as cleft palate.
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Affiliation(s)
- J S Lee
- Department of Pediatrics, Gachon University Gil Medical Center, Incheon, South Korea
| | - Y Yoo
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - B C Lim
- Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - K J Kim
- Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - M Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - J-H Chae
- Department of Pediatrics, Pediatric Clinical Neuroscience Center, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, South Korea
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32
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Zarate YA, Perry H, Ben-Omran T, Sellars EA, Stein Q, Almureikhi M, Simmons K, Klein O, Fish J, Feingold M, Douglas J, Kruer MC, Si Y, Mao R, McKnight D, Gibellini F, Retterer K, Slavotinek A. Further supporting evidence for the SATB2-associated syndrome found through whole exome sequencing. Am J Med Genet A 2016; 167A:1026-32. [PMID: 25885067 DOI: 10.1002/ajmg.a.36849] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 09/27/2014] [Indexed: 12/16/2022]
Abstract
The SATB2-associated syndrome (SAS) was recently proposed as a clinically recognizable syndrome that results from deleterious alterations of the SATB2 gene in humans. Although interstitial deletions at 2q33 encompassing SATB2, either alone or contiguously with other genes, have been reported before, there is limited literature regarding intragenic mutations of this gene and the resulting phenotype. We describe five patients in whom whole exome sequencing identified five unique de novo mutations in the SATB2 gene (one splice site, one frameshift, and three nonsense mutations). The five patients had overlapping features that support the characteristic features of the SAS: intellectual disability with limited speech development and craniofacial abnormalities including cleft palate, dysmorphic features, and dental abnormalities. Furthermore, Patient 1 also had features not previously described that represent an expansion of the phenotype. Osteopenia was seen in two of the patients, suggesting that this finding could be added to the list of distinctive findings. We provide supporting evidence that analysis for deletions or point mutations in SATB2 should be considered in children with intellectual disability and severely impaired speech, cleft or high palate, teeth abnormalities, and osteopenia.
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Affiliation(s)
- Yuri A Zarate
- Section of Genetics and Metabolism, University of Arkansas for Medical Sciences, Little Rock, Arkansas
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33
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Fish JL. Developmental mechanisms underlying variation in craniofacial disease and evolution. Dev Biol 2015; 415:188-197. [PMID: 26724698 DOI: 10.1016/j.ydbio.2015.12.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 12/17/2015] [Accepted: 12/21/2015] [Indexed: 01/14/2023]
Abstract
Craniofacial disease phenotypes exhibit significant variation in penetrance and severity. Although many genetic contributions to phenotypic variation have been identified, genotype-phenotype correlations remain imprecise. Recent work in evolutionary developmental biology has exposed intriguing developmental mechanisms that potentially explain incongruities in genotype-phenotype relationships. This review focuses on two observations from work in comparative and experimental animal model systems that highlight how development structures variation. First, multiple genetic inputs converge on relatively few developmental processes. Investigation of when and how variation in developmental processes occurs may therefore help predict potential genetic interactions and phenotypic outcomes. Second, genetic mutation is typically associated with an increase in phenotypic variance. Several models outlining developmental mechanisms underlying mutational increases in phenotypic variance are discussed using Satb2-mediated variation in jaw size as an example. These data highlight development as a critical mediator of genotype-phenotype correlations. Future research in evolutionary developmental biology focusing on tissue-level processes may help elucidate the "black box" between genotype and phenotype, potentially leading to novel treatment, earlier diagnoses, and better clinical consultations for individuals affected by craniofacial anomalies.
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Affiliation(s)
- Jennifer L Fish
- University of Massachusetts Lowell, Department of Biological Sciences, 198 Riverside Street, Olsen Hall, Room 619, Lowell, MA 01854, United States.
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34
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Mutual regulation between Satb2 and Fezf2 promotes subcerebral projection neuron identity in the developing cerebral cortex. Proc Natl Acad Sci U S A 2015; 112:11702-7. [PMID: 26324926 DOI: 10.1073/pnas.1504144112] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Generation of distinct cortical projection neuron subtypes during development relies in part on repression of alternative neuron identities. It was reported that the special AT-rich sequence-binding protein 2 (Satb2) is required for proper development of callosal neuron identity and represses expression of genes that are essential for subcerebral axon development. Surprisingly, Satb2 has recently been shown to be necessary for subcerebral axon development. Here, we unravel a previously unidentified mechanism underlying this paradox. We show that SATB2 directly activates transcription of forebrain embryonic zinc finger 2 (Fezf2) and SRY-box 5 (Sox5), genes essential for subcerebral neuron development. We find that the mutual regulation between Satb2 and Fezf2 enables Satb2 to promote subcerebral neuron identity in layer 5 neurons, and to repress subcerebral characters in callosal neurons. Thus, Satb2 promotes the development of callosal and subcerebral neurons in a cell context-dependent manner.
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Papoulidis I, Paspaliaris V, Papageorgiou E, Siomou E, Dagklis T, Sotiriou S, Thomaidis L, Manolakos E. Deletion of 4.4 Mb at 2q33.2q33.3 May Cause Growth Deficiency in a Patient with Mental Retardation, Facial Dysmorphic Features and Speech Delay. Cytogenet Genome Res 2015; 145:19-24. [PMID: 25925190 DOI: 10.1159/000381568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2015] [Indexed: 11/19/2022] Open
Abstract
A patient with a rare interstitial deletion of chromosomal band 2q33.2q33.3 is described. The clinical features resembled the 2q33.1 microdeletion syndrome (Glass syndrome), including mental retardation, facial dysmorphism, high-arched narrow palate, growth deficiency, and speech delay. The chromosomal aberration was characterized by whole genome BAC aCGH. A comparison of the current patient and Glass syndrome features revealed that this case displayed a relatively mild phenotype. Overall, it is suggested that the deleted region of 2q33 causative for Glass syndrome may be larger than initially suggested.
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Affiliation(s)
- Ioannis Papoulidis
- Access To Genome - ATG P.C., Clinical Laboratory Genetics, Thessaloniki, Greece
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Puvabanditsin S, February M, Shaik T, Kashyap A, Bruno C, Mehta R. 2q31.1 microdeletion syndrome: case report and literature review. Clin Case Rep 2015; 3:357-60. [PMID: 26185628 PMCID: PMC4498842 DOI: 10.1002/ccr3.260] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 02/01/2015] [Indexed: 11/29/2022] Open
Abstract
We describe a preterm neonate with bilateral coloboma of the iris, upper and lower limb malformations including rocker bottom feet, camptodactyly, and clinodactyly together with microcephaly and small for gestational age whom cytogenetic diagnosis using SNP microarray detected an interstitial deletion of chromosome 2 between 2q31.1 and 33.1.
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Affiliation(s)
- Surasak Puvabanditsin
- Department of Pediatrics, Rutgers Robert Wood Johnson Medical School New Brunswick, New Jersey, USA
| | - Melissa February
- Department of Pediatrics, Rutgers Robert Wood Johnson Medical School New Brunswick, New Jersey, USA
| | - Tazeem Shaik
- Department of Pediatrics, Rutgers Robert Wood Johnson Medical School New Brunswick, New Jersey, USA
| | - Arun Kashyap
- Department of Pediatrics, Rutgers Robert Wood Johnson Medical School New Brunswick, New Jersey, USA
| | - Chantal Bruno
- Department of Pediatrics, Rutgers Robert Wood Johnson Medical School New Brunswick, New Jersey, USA
| | - Rajeev Mehta
- Department of Pediatrics, Rutgers Robert Wood Johnson Medical School New Brunswick, New Jersey, USA
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Mansour MA, Hyodo T, Ito S, Kurita K, Kokuryo T, Uehara K, Nagino M, Takahashi M, Hamaguchi M, Senga T. SATB2 suppresses the progression of colorectal cancer cells via inactivation of MEK5/ERK5 signaling. FEBS J 2015; 282:1394-405. [DOI: 10.1111/febs.13227] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 01/15/2015] [Accepted: 02/04/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Mohammed A. Mansour
- Division of Cancer Biology; Nagoya University Graduate School of Medicine; Nagoya Japan
- Biochemistry Section; Department of Chemistry; Faculty of Science; Tanta University; Egypt
| | - Toshinori Hyodo
- Division of Cancer Biology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Satoko Ito
- Division of Cancer Biology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Kenji Kurita
- Department of Surgical Oncology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Toshio Kokuryo
- Department of Surgical Oncology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Keisuke Uehara
- Department of Surgical Oncology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Masato Nagino
- Department of Surgical Oncology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Masahide Takahashi
- Department of Pathology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Michinari Hamaguchi
- Division of Cancer Biology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - Takeshi Senga
- Division of Cancer Biology; Nagoya University Graduate School of Medicine; Nagoya Japan
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Yu N, Shin S, Lee KA. First Korean case of SATB2-associated 2q32-q33 microdeletion syndrome. Ann Lab Med 2015; 35:275-8. [PMID: 25729738 PMCID: PMC4330186 DOI: 10.3343/alm.2015.35.2.275] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 09/24/2014] [Accepted: 12/30/2014] [Indexed: 01/21/2023] Open
Affiliation(s)
- Nae Yu
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Saeam Shin
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung-A Lee
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
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Liedén A, Kvarnung M, Nilssson D, Sahlin E, Lundberg ES. Intragenic duplication--a novel causative mechanism for SATB2-associated syndrome. Am J Med Genet A 2014; 164A:3083-7. [PMID: 25251319 DOI: 10.1002/ajmg.a.36769] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 08/01/2014] [Indexed: 12/15/2022]
Abstract
Previous studies have shown that genetic aberrations involving the special AT-rich sequence-binding protein 2 (SATB2) gene result in a variable phenotype of syndromic intellectual disability. Although only a small number of patients have been described, there is already considerable variation in regard to the underlying molecular mechanism spanning from structural variation to point mutations. We here describe a male patient with intellectual disability, speech and language impairment, cleft palate, malformed teeth, and oligodontia. Array CGH analysis identified a small intragenic duplication in the SATB2 gene that included three coding exons. The result was confirmed by multiplex ligation-dependent probe amplification and low coverage whole genome mate pair sequencing. WGS breakpoint analysis directly confirmed the duplication as intragenic. This is the first reported patient with an intragenic duplication in SATB2 in combination with a phenotype that is highly similar to previously described patients with small deletions or point mutations of the same gene. Our findings expand the spectra of SATB2 mutations and confirm the presence of a distinct SATB2-phenotype with severe ID and speech impairment, cleft palate and/or high arched palate, and abnormalities of the teeth. For patients that present with this clinical picture, a high-resolution exon targeted array CGH and/or WGS, in addition to sequencing of SATB2, should be considered.
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Affiliation(s)
- Agne Liedén
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
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Kaiser AS, Maas B, Wolff A, Sutter C, Janssen JWG, Hinderhofer K, Moog U. Characterization of the first intragenic SATB2 duplication in a girl with intellectual disability, nearly absent speech and suspected hypodontia. Eur J Hum Genet 2014; 23:704-7. [PMID: 25118029 DOI: 10.1038/ejhg.2014.163] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 07/03/2014] [Accepted: 07/09/2014] [Indexed: 12/25/2022] Open
Abstract
SATB2, a gene encoding a highly conserved DNA-binding protein, is known to have an important role in craniofacial and neuronal development. Only a few patients with SATB2 variants have been described so far. Recently, Döcker et al provided a summary of these patients and delineated the SAS (SATB2-associated syndrome). We here report on a girl with intellectual disability, nearly absent speech and suspected hypodontia who was shown to carry an intragenic SATB2 tandem duplication hypothesized to lead to haploinsufficiency of SATB2. Preliminary information on this patient had already been included in the article by Döcker et al. We want to give a detailed description of the patient's phenotype and genotype, providing further insight into the spectrum of the molecular mechanisms leading to SAS.
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Affiliation(s)
- Ann-Sophie Kaiser
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - Bianca Maas
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - Anna Wolff
- Department of Conservative Dentistry, Heidelberg University, Heidelberg, Germany
| | - Christian Sutter
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | | | | | - Ute Moog
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
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Abstract
The last several years have seen unprecedented advances in deciphering the genetic etiology of autism spectrum disorders (ASDs). Heritability studies have repeatedly affirmed a contribution of genetic factors to the overall disease risk. Technical breakthroughs have enabled the search for these genetic factors via genome-wide surveys of a spectrum of potential sequence variations, from common single-nucleotide polymorphisms to essentially private chromosomal abnormalities. Studies of copy-number variation have identified significant roles for both recurrent and nonrecurrent large dosage imbalances, although they have rarely revealed the individual genes responsible. More recently, discoveries of rare point mutations and characterization of balanced chromosomal abnormalities have pinpointed individual ASD genes of relatively strong effect, including both loci with strong a priori biological relevance and those that would have otherwise been unsuspected as high-priority biological targets. Evidence has also emerged for association with many common variants, each adding a small individual contribution to ASD risk. These findings collectively provide compelling empirical data that the genetic basis of ASD is highly heterogeneous, with hundreds of genes capable of conferring varying degrees of risk, depending on their nature and the predisposing genetic alteration. Moreover, many genes that have been implicated in ASD also appear to be risk factors for related neurodevelopmental disorders, as well as for a spectrum of psychiatric phenotypes. While some ASD genes have evident functional significance, like synaptic proteins such as the SHANKs, neuroligins, and neurexins, as well as fragile x mental retardation-associated proteins, ASD genes have also been discovered that do not present a clear mechanism of specific neurodevelopmental dysfunction, such as regulators of chromatin modification and global gene expression. In its sum, the progress from genetic studies to date has been remarkable and increasingly rapid, but the interactive impact of strong-effect genetic lesions coupled with weak-effect common polymorphisms has not yet led to a unified understanding of ASD pathogenesis or explained its highly variable clinical expression. With an increasingly firm genetic foundation, the coming years will hopefully see equally rapid advances in elucidating the functional consequences of ASD genes and their interactions with environmental/experiential factors, supporting the development of rational interventions.
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Zhao X, Qu Z, Tickner J, Xu J, Dai K, Zhang X. The role of SATB2 in skeletogenesis and human disease. Cytokine Growth Factor Rev 2013; 25:35-44. [PMID: 24411565 DOI: 10.1016/j.cytogfr.2013.12.010] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 12/15/2013] [Indexed: 02/06/2023]
Abstract
Since the discovery of SATB2 (special AT-rich sequence binding protein 2) a decade ago, its pivotal roles in development and tissue regeneration have emerged, particularly in craniofacial patterning and development, palate formation, and osteoblast differentiation and maturation. As a member of the special AT-rich binding proteins family that bind to nuclear matrix-attachment regions (MAR), it also displays functional versatility in central nervous development, especially corpus callosum and pons formation, cancer development and prognosis, as well as in immune regulation. At the molecular level, Satb2 gene expression appears to be tissue and stage-specific, and is regulated by several cytokines and growth factors, such as BMP2/4/7, insulin, CNTF, and LIF via ligand receptor signaling pathways. SATB2 mainly performs a twofold role as a transcription regulator by directly binding to AT-rich sequences in MARs to modulate chromatin remodeling, or through association with other transcription factors to modulate the cis-regulation elements and thus to regulate the expression of down-stream target genes and a wide range of biological processes. This contemporary review provides an exploration of the molecular characteristics and function of SATB2; including its expression and cytokine regulation, its involvement in human disease, and its potential roles in skeletogenesis.
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Affiliation(s)
- Xiaoying Zhao
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), Shanghai 200025, China
| | - Zhihu Qu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 200031, China
| | - Jennifer Tickner
- School of Pathology and Laboratory Medicine, The University of Western Australia (M504), 35 Stirling Highway, Crawley WA 6009, Australia
| | - Jiake Xu
- School of Pathology and Laboratory Medicine, The University of Western Australia (M504), 35 Stirling Highway, Crawley WA 6009, Australia.
| | - Kerong Dai
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), Shanghai 200025, China; Shanghai Key Laboratory of Orthopaedic Implant, Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Xiaoling Zhang
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Jiao Tong University School of Medicine (SJTUSM) & Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), Shanghai 200025, China; Shanghai Key Laboratory of Orthopaedic Implant, Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.
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Rainger JK, Bhatia S, Bengani H, Gautier P, Rainger J, Pearson M, Ansari M, Crow J, Mehendale F, Palinkasova B, Dixon MJ, Thompson PJ, Matarin M, Sisodiya SM, Kleinjan DA, Fitzpatrick DR. Disruption of SATB2 or its long-range cis-regulation by SOX9 causes a syndromic form of Pierre Robin sequence. Hum Mol Genet 2013; 23:2569-79. [PMID: 24363063 PMCID: PMC3990159 DOI: 10.1093/hmg/ddt647] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Heterozygous loss-of-function (LOF) mutations in the gene encoding the DNA-binding protein, SATB2, result in micrognathia and cleft palate in both humans and mice. In three unrelated individuals, we show that translocation breakpoints (BPs) up to 896 kb 3′ of SATB2 polyadenylation site cause a phenotype which is indistinguishable from that caused by SATB2 LOF mutations. This syndrome comprises long nose, small mouth, micrognathia, cleft palate, arachnodactyly and intellectual disability. These BPs map to a gene desert between PLCL1 and SATB2. We identified three putative cis-regulatory elements (CRE1–3) using a comparative genomic approach each of which would be placed in trans relative to SATB2 by all three BPs. CRE1–3 each bind p300 and mono-methylated H3K4 consistent with enhancer function. In silico analysis suggested that CRE1–3 contain one or more conserved SOX9-binding sites, and this binding was confirmed using chromatin immunoprecipitation on cells derived from mouse embryonic pharyngeal arch. Interphase bacterial artificial chromosome fluorescence in situ hybridization measurements in embryonic craniofacial tissues showed that the orthologous region in mice exhibits Satb2 expression-dependent chromatin decondensation consistent with Satb2 being a target gene of CRE1–3. To assess their in vivo function, we made multiple stable reporter transgenic lines for each enhancer in zebrafish. CRE2 was shown to drive SATB2-like expression in the embryonic craniofacial region. This expression could be eliminated by mutating the SOX9-binding site of CRE2. These observations suggest that SATB2 and SOX9 may be acting together via complex cis-regulation to coordinate the growth of the developing jaw.
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Affiliation(s)
- Jacqueline K Rainger
- MRC Human Genetics Unit, MRC Institute of Genetic and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
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Further delineation of the SATB2 phenotype. Eur J Hum Genet 2013; 22:1034-9. [PMID: 24301056 DOI: 10.1038/ejhg.2013.280] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 10/18/2013] [Accepted: 10/30/2013] [Indexed: 12/16/2022] Open
Abstract
SATB2 is an evolutionarily highly conserved chromatin remodeling gene located on chromosome 2q33.1. Vertebrate animal models have shown that Satb2 has a crucial role in craniofacial patterning and osteoblast differentiation, as well as in determining the fates of neuronal projections in the developing neocortex. In humans, chromosomal translocations and deletions of 2q33.1 leading to SATB2 haploinsufficiency are associated with cleft palate (CP), facial dysmorphism and intellectual disability (ID). A single patient carrying a nonsense mutation in SATB2 has been described to date. In this study, we performed trio-exome sequencing in a 3-year-old girl with CP and severely delayed speech development, and her unaffected parents. Previously, the girl had undergone conventional and molecular karyotyping (microarray analysis), as well as targeted analysis for different diseases associated with developmental delay, including Angelman syndrome, Rett syndrome and Fragile X syndrome. No diagnosis could be established. Exome sequencing revealed a de novo nonsense mutation in the SATB2 gene (c.715C>T; p.R239*). The identification of a second patient carrying a de novo nonsense mutation in SATB2 confirms that this gene is essential for normal craniofacial patterning and cognitive development. Based on our data and the literature published so far, we propose a new clinically recognizable syndrome - the SATB2-associated syndrome (SAS). SAS is likely to be underdiagnosed and should be considered in children with ID, severe speech delay, cleft or high-arched palate and abnormal dentition with crowded and irregularly shaped teeth.
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Tiwari VN, Sundaram SK, Chugani HT, Huq AHMM. Infantile spasms are associated with abnormal copy number variations. J Child Neurol 2013; 28:1191-6. [PMID: 22914377 DOI: 10.1177/0883073812453496] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The authors tested the hypothesis that de novo copy number variations (CNVs) implicated in known genomic disorders ("pathogenic CNVs") are significant predisposing factors of infantile spasms. The authors performed a genome-wide analysis of single-nucleotide polymorphism genotyping microarray data to identify the role of de novo/known pathogenic large CNVs in 13 trios of children affected by infantile spasms. A rare, large (4.8 Mb) de novo duplication was detected in the 15q11-13 region of 1 patient. In addition, 3 known pathogenic CNVs (present in the patient as well as 1 of the parents) were detected in total. In 1 patient, a known pathogenic deletion was detected in the region of 2q32.3. Similarly, in 1 other patient, 2 known pathogenic deletions in the regions of 16p11.2 and Xp22.13 (containing CDKL5) were detected. These findings suggest that some specific pathogenic CNVs predispose to infantile spasms and may be associated with different phenotypes.
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Affiliation(s)
- Vijay N Tiwari
- 1Department of Pediatrics, Children's Hospital of Michigan, Wayne State University, Detroit, MI, USA
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Tomaszewska A, Podbiol-Palenta A, Boter M, Geisler G, Wawrzkiewicz-Witkowska A, Galjaard RJH, Zajączek S, Srebniak MI. Deletion of 14.7 Mb 2q32.3q33.3 with a marfanoid phenotype and hypothyroidism. Am J Med Genet A 2013; 161A:2347-51. [PMID: 23918240 DOI: 10.1002/ajmg.a.36076] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Accepted: 05/08/2013] [Indexed: 01/31/2023]
Abstract
Interstitial 2q deletions are very rare chromosome abnormalities. The 2q32q33 deletion was proposed as a distinct entity with characteristic phenotype. Most patients have feeding problems, growth restriction, moderate to severe developmental delay, speech delay or lack of speech, high, prominent forehead, thin sparse hair, teeth abnormalities and a high or cleft palate. We report on another rare case of interstitial 2q33 deletion found during routine karyotyping and further characterized by the use of a genomic SNP array. The patient presented here has a "Marfanoid" phenotype, hypothyroidism, and a marked tactile hypersensitivity. We concluded that hypothyroidism might be caused by the deletion of the CD28 and/or CTLA4 genes; also cardiological monitoring of patients with the deletion including BMPR2 may be considered in order to prevent the possible medical complications associated with pulmonary hypertension.
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Affiliation(s)
- Agnieszka Tomaszewska
- Prenatal Diagnostics and Genetic Clinic, Medical University of Silesia, Zabrze, Poland
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Mc Cormack A, Taylor J, Gregersen N, George AM, Love DR. Delineation of 2q32q35 deletion phenotypes: two apparent "proximal" and "distal" syndromes. Case Rep Genet 2013; 2013:823451. [PMID: 23840981 PMCID: PMC3690635 DOI: 10.1155/2013/823451] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 05/22/2013] [Indexed: 11/18/2022] Open
Abstract
We report on three patients with interstitial deletions of the long arm of chromosome 2 involving bands 2q32.1-q35. They presented with wide-ranging phenotypic variation including facial dysmorphisms, cleft palate, learning difficulties, behavioural issues and severe heart defects. Microarray analysis confirmed an 8.6 Mb deletion in patients 1 and 2 and a 24.7 Mb deletion in patient 3. We discuss the genes involved in the deleted regions including MYO1B, GLS, FRZB, SATB2, and CPS1 and compare the phenotype with those reported in the literature. Taken together, these data suggest that there is a spectrum of disease severity such that patients with deletions encompassing the region of 2q32.1q32.2, which includes the FRZB gene, show an apparently milder phenotype compared to those that lie further distal in 2q32.3q35 that encompasses the SATB2 gene.
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Affiliation(s)
- Adrian Mc Cormack
- Diagnostic Genetics, LabPlus, Auckland City Hospital, P.O. Box 110031, Auckland 1148, New Zealand
| | - Juliet Taylor
- Genetic Health Service New Zealand-Northern Hub, Auckland City Hospital, Private Bag 92024, Auckland 1142, New Zealand
| | - Nerine Gregersen
- Genetic Health Service New Zealand-Northern Hub, Auckland City Hospital, Private Bag 92024, Auckland 1142, New Zealand
| | - Alice M. George
- Diagnostic Genetics, LabPlus, Auckland City Hospital, P.O. Box 110031, Auckland 1148, New Zealand
| | - Donald R. Love
- Diagnostic Genetics, LabPlus, Auckland City Hospital, P.O. Box 110031, Auckland 1148, New Zealand
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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