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Pushpan CK, Kumar SR. iPSC-Derived Cardiomyocytes as a Disease Model to Understand the Biology of Congenital Heart Defects. Cells 2024; 13:1430. [PMID: 39273002 PMCID: PMC11393881 DOI: 10.3390/cells13171430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 08/21/2024] [Accepted: 08/23/2024] [Indexed: 09/15/2024] Open
Abstract
The discovery of human pluripotent stem cells (hiPSCs) and advances in DNA editing techniques have opened opportunities for personalized cell-based therapies for a wide spectrum of diseases. It has gained importance as a valuable tool to investigate genetic and functional variations in congenital heart defects (CHDs), enabling the customization of treatment strategies. The ability to understand the disease process specific to the individual patient of interest provides this technology with a significant advantage over generic animal models. However, its utility as a disease-in-a-dish model requires identifying effective and efficient differentiation protocols that accurately reproduce disease traits. Currently, iPSC-related research relies heavily on the quality of cells and the properties of the differentiation technique In this review, we discuss the utility of iPSCs in bench CHD research, the molecular pathways involved in the differentiation of cardiomyocytes, and their applications in CHD disease modeling, therapeutics, and drug application.
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Affiliation(s)
- Chithra K Pushpan
- Division of Cardiothoracic Surgery, Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198-7616, USA
| | - Subramanyan Ram Kumar
- Division of Cardiothoracic Surgery, Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198-7616, USA
- Dr. C.C. and Mabel, L. Criss Heart Center, Children's Nebraska, 8200 Dodge St, Omaha, NE 68114, USA
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2
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Schleifer CH, Chang SE, Amir CM, O'Hora KP, Fung H, Kang JWD, Kushan-Wells L, Daly E, Di Fabio F, Frascarelli M, Gudbrandsen M, Kates WR, Murphy D, Addington J, Anticevic A, Cadenhead KS, Cannon TD, Cornblatt BA, Keshavan M, Mathalon DH, Perkins DO, Stone W, Walker E, Woods SW, Uddin LQ, Kumar K, Hoftman GD, Bearden CE. Unique functional neuroimaging signatures of genetic versus clinical high risk for psychosis. Biol Psychiatry 2024:S0006-3223(24)01538-5. [PMID: 39181389 DOI: 10.1016/j.biopsych.2024.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 08/05/2024] [Accepted: 08/08/2024] [Indexed: 08/27/2024]
Abstract
BACKGROUND 22q11.2 Deletion Syndrome (22qDel) is a copy number variant (CNV) associated with psychosis and other neurodevelopmental disorders. Adolescents at clinical high risk for psychosis (CHR) are identified based on the presence of subthreshold psychosis symptoms. Whether common neural substrates underlie these distinct high-risk populations is unknown. We compared functional brain measures in 22qDel and CHR cohorts and mapped results to biological pathways. METHODS We analyzed two large multi-site cohorts with resting-state functional MRI (rs-fMRI): 1) 22qDel (n=164, 47% female) and typically developing (TD) controls (n=134, 56% female); 2) CHR individuals (n=244, 41% female) and TD controls (n=151, 46% female) from the North American Prodrome Longitudinal Study-2. We computed global brain connectivity (GBC), local connectivity (LC), and brain signal variability (BSV) across cortical regions, testing case-control differences for 22qDel and CHR separately. Group difference maps were related to published brain maps using autocorrelation-preserving permutation. RESULTS BSV, LC, and GBC are significantly disrupted in 22qDel compared with TD controls (False Discovery Rate q<0.05). Spatial maps of BSV and LC differences are highly correlated with each other, unlike GBC. In CHR, only LC is significantly altered versus controls, with a different spatial pattern compared to 22qDel. Group differences map onto biological gradients, with 22qDel effects strongest in regions with high predicted blood flow and metabolism. CONCLUSION 22qDel and CHR exhibit divergent effects on fMRI temporal variability and multi-scale functional connectivity. In 22qDel, strong and convergent disruptions in BSV and LC not seen in CHR individuals suggest distinct functional brain alterations.
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Affiliation(s)
- Charles H Schleifer
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Sarah E Chang
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Carolyn M Amir
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Kathleen P O'Hora
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Hoki Fung
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Jee Won D Kang
- Department of Psychology, University of California, Los Angeles, CA, USA
| | - Leila Kushan-Wells
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Eileen Daly
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology & Neuroscience (IoPPN), King's College London, London, UK
| | - Fabio Di Fabio
- Department of Human Neurosciences, Sapienza University, Rome, Italy
| | | | - Maria Gudbrandsen
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology & Neuroscience (IoPPN), King's College London, London, UK; Centre for Psychological Research (CREW), School of Psychology, University of Roehampton, London, UK
| | - Wendy R Kates
- Department of Psychiatry and Behavioral Sciences, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Declan Murphy
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology & Neuroscience (IoPPN), King's College London, London, UK
| | - Jean Addington
- Department of Psychiatry, Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Alan Anticevic
- Departments of Psychology and Psychiatry, Yale University, New Haven, CT, USA
| | | | - Tyrone D Cannon
- Departments of Psychology and Psychiatry, Yale University, New Haven, CT, USA
| | - Barbara A Cornblatt
- Department of Psychiatry, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Matcheri Keshavan
- Department of Psychiatry, Harvard Medical School at Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Daniel H Mathalon
- Department of Psychiatry, University of California, and San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
| | - Diana O Perkins
- Department of Psychiatry, University of North Carolina, Chapel Hill, NC, USA
| | - William Stone
- Department of Psychiatry, Harvard Medical School at Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Elaine Walker
- Department of Psychology, Emory University, Atlanta, GA, USA
| | - Scott W Woods
- Departments of Psychology and Psychiatry, Yale University, New Haven, CT, USA
| | - Lucina Q Uddin
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Kuldeep Kumar
- Centre de Recherche du CHU Sainte-Justine, University of Montreal, Montreal, Canada
| | - Gil D Hoftman
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Carrie E Bearden
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA; Department of Psychology, University of California, Los Angeles, CA, USA.
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Crockett AM, Kebir H, Anderson SA, Jyonouchi S, Romberg N, Alvarez JI. 22q11.2 Deletion-Associated Blood-Brain Barrier Permeability Potentiates Systemic Capillary Leak Syndrome Neurologic Features. J Clin Immunol 2024; 44:87. [PMID: 38578402 DOI: 10.1007/s10875-024-01686-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 03/06/2024] [Indexed: 04/06/2024]
Abstract
We present a case study of a young male with a history of 22q11.2 deletion syndrome (22qDS), diagnosed with systemic capillary leak syndrome (SCLS) who presented with acute onset of diffuse anasarca and sub-comatose obtundation. We hypothesized that his co-presentation of neurological sequelae might be due to blood-brain barrier (BBB) susceptibility conferred by the 22q11.2 deletion, a phenotype that we have previously identified in 22qDS. Using pre- and post-intravenous immunoglobulins (IVIG) patient serum, we studied circulating biomarkers of inflammation and assessed the potential susceptibility of the 22qDS BBB. We employed in vitro cultures of differentiated BBB-like endothelial cells derived from a 22qDS patient and a healthy control. We found evidence of peripheral inflammation and increased serum lipopolysaccharide (LPS) alongside endothelial cells in circulation. We report that the patient's serum significantly impairs barrier function of the 22qDS BBB compared to control. Only two other cases of pediatric SCLS with neurologic symptoms have been reported, and genetic risk factors have been suggested in both instances. As the third case to be reported, our findings are consistent with the hypothesis that genetic susceptibility of the BBB conferred by genes such as claudin-5 deleted in the 22q11.2 region promoted neurologic involvement during SCLS in this patient.
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Affiliation(s)
- Alexis M Crockett
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 380 South University Avenue, 412 Hill, Philadelphia, PA, 19104-4539, USA
| | - Hania Kebir
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 380 South University Avenue, 412 Hill, Philadelphia, PA, 19104-4539, USA
| | - Stewart A Anderson
- Department of Child and Adolescent Psychiatry, Children's Hospital of Philadelphia, Philadelphia, USA
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Soma Jyonouchi
- Division of Immunology and Allergy, Children's Hospital of Philadelphia, Philadelphia, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Neil Romberg
- Division of Immunology and Allergy, Children's Hospital of Philadelphia, Philadelphia, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
- Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Jorge I Alvarez
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, 380 South University Avenue, 412 Hill, Philadelphia, PA, 19104-4539, USA.
- Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.
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4
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Cillo F, Coppola E, Habetswallner F, Cecere F, Pignata L, Toriello E, De Rosa A, Grilli L, Ammendola A, Salerno P, Romano R, Cirillo E, Merla G, Riccio A, Pignata C, Giardino G. Understanding the Variability of 22q11.2 Deletion Syndrome: The Role of Epigenetic Factors. Genes (Basel) 2024; 15:321. [PMID: 38540380 PMCID: PMC10969806 DOI: 10.3390/genes15030321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/21/2024] [Accepted: 02/26/2024] [Indexed: 06/14/2024] Open
Abstract
Initially described as a triad of immunodeficiency, congenital heart defects and hypoparathyroidism, 22q11.2 deletion syndrome (22q11.2DS) now encompasses a great amount of abnormalities involving different systems. Approximately 85% of patients share a 3 Mb 22q11.2 region of hemizygous deletion in which 46 protein-coding genes are included. However, the hemizygosity of the genes of this region cannot fully explain the clinical phenotype and the phenotypic variability observed among patients. Additional mutations in genes located outside the deleted region, leading to "dual diagnosis", have been described in 1% of patients. In some cases, the hemizygosity of the 22q11.2 region unmasks autosomal recessive conditions due to additional mutations on the non-deleted allele. Some of the deleted genes play a crucial role in gene expression regulation pathways, involving the whole genome. Typical miRNA expression patterns have been identified in 22q11.2DS, due to an alteration in miRNA biogenesis, affecting the expression of several target genes. Also, a methylation epi-signature in CpG islands differentiating patients from controls has been defined. Herein, we summarize the evidence on the genetic and epigenetic mechanisms implicated in the pathogenesis of the clinical manifestations of 22q11.2 DS. The review of the literature confirms the hypothesis that the 22q11.2DS phenotype results from a network of interactions between deleted protein-coding genes and altered epigenetic regulation.
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Affiliation(s)
- Francesca Cillo
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Emma Coppola
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Federico Habetswallner
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Francesco Cecere
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, Università degli Studi della Campania “Luigi Vanvitelli”, 81100 Caserta, Italy; (F.C.); (L.P.); (A.R.)
| | - Laura Pignata
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, Università degli Studi della Campania “Luigi Vanvitelli”, 81100 Caserta, Italy; (F.C.); (L.P.); (A.R.)
| | - Elisabetta Toriello
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Antonio De Rosa
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Laura Grilli
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Antonio Ammendola
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80138 Naples, Italy; (A.A.); (P.S.); (G.M.)
| | - Paolo Salerno
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80138 Naples, Italy; (A.A.); (P.S.); (G.M.)
| | - Roberta Romano
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Emilia Cirillo
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Giuseppe Merla
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80138 Naples, Italy; (A.A.); (P.S.); (G.M.)
- Laboratory of Regulatory and Functional Genomics, Fondazione IRCCS Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy
| | - Andrea Riccio
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, Università degli Studi della Campania “Luigi Vanvitelli”, 81100 Caserta, Italy; (F.C.); (L.P.); (A.R.)
| | - Claudio Pignata
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
| | - Giuliana Giardino
- Department of Translational Medical Sciences, Pediatric Section, University of Naples Federico II, 80138 Naples, Italy; (F.C.); (E.C.); (F.H.); (E.T.); (A.D.R.); (L.G.); (R.R.); (E.C.); (G.G.)
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Kmiotek-Wasylewska K, Łabędź-Masłowska A, Bobis-Wozowicz S, Karnas E, Noga S, Sekuła-Stryjewska M, Woźnicka O, Madeja Z, Dawn B, Zuba-Surma EK. Induced pluripotent stem cell-derived extracellular vesicles enriched with miR-126 induce proangiogenic properties and promote repair of ischemic tissue. FASEB J 2024; 38:e23415. [PMID: 38243682 DOI: 10.1096/fj.202301836r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/15/2023] [Accepted: 12/27/2023] [Indexed: 01/21/2024]
Abstract
Emerging evidence suggests that stem cell-derived extracellular vesicles (EVs) may induce pro-regenerative effects in ischemic tissues by delivering bioactive molecules, including microRNAs. Recent studies have also shown pro-regenerative benefits of EVs derived from induced pluripotent stem (iPS) cells. However, the underlying mechanisms of EV benefits and the role of their transferred regulatory molecules remain incompletely understood. Accordingly, we investigated the effects of human iPS-derived EVs (iPS-EVs) enriched in proangiogenic miR-126 (iPS-miR-126-EVs) on functional properties of human endothelial cells (ECs) in vitro. We also examined the outcomes following EV injection in a murine model of limb ischemia in vivo. EVs were isolated from conditioned media from cultures of unmodified and genetically modified human iPS cells overexpressing miR-126. The iPS-miR-126-EVs were enriched in miR-126 when compared with control iPS-EVs and effectively transferred miR-126 along with other miRNAs to recipient ECs improving their functional properties essential for ischemic tissue repair, including proliferation, metabolic activity, cell survival, migration, and angiogenic potential. Injection of iPS-miR-126-EVs in vivo in a murine model of acute limb ischemia promoted angiogenesis, increased perfusion, and enhanced functional recovery. These observations corresponded with elevated expression of genes for several proangiogenic factors in ischemic tissues following iPS-miR-126-EV transplantation. These results indicate that innate pro-regenerative properties of iPS-EVs may be further enhanced by altering their molecular composition via controlled genetic modifications. Such iPS-EVs overexpressing selected microRNAs, including miR-126, may represent a novel acellular tool for therapy of ischemic tissues in vivo.
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Affiliation(s)
- Katarzyna Kmiotek-Wasylewska
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, Kraków, Poland
| | - Anna Łabędź-Masłowska
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, Kraków, Poland
| | - Sylwia Bobis-Wozowicz
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, Kraków, Poland
| | - Elżbieta Karnas
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, Kraków, Poland
| | - Sylwia Noga
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, Kraków, Poland
- Malopolska Centre of Biotechnology, Laboratory of Stem Cell Biotechnology, Jagiellonian University, Kraków, Poland
| | - Małgorzata Sekuła-Stryjewska
- Malopolska Centre of Biotechnology, Laboratory of Stem Cell Biotechnology, Jagiellonian University, Kraków, Poland
| | - Olga Woźnicka
- Faculty of Biology, Institute of Zoology and Biomedical Research, Department of Cell Biology and Imaging, Jagiellonian University, Kraków, Poland
| | - Zbigniew Madeja
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, Kraków, Poland
| | - Buddhadeb Dawn
- Department of Internal Medicine, Kirk Kerkorian School of Medicine, University of Nevada, Las Vegas, Las Vegas, Nevada, USA
| | - Ewa K Zuba-Surma
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Jagiellonian University, Kraków, Poland
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Xu X, Chen J, Zhao H, Pi Y, Lin G, Hu L. Single-Cell RNA-seq Analysis of a Human Embryonic Stem Cell to Endothelial Cell System Based on Transcription Factor Overexpression. Stem Cell Rev Rep 2023; 19:2497-2509. [PMID: 37537495 DOI: 10.1007/s12015-023-10598-y] [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: 07/17/2023] [Indexed: 08/05/2023]
Abstract
BACKGROUND Human embryonic stem cell (hESC)-derived endothelial cells (ECs) possess therapeutic potential in many diseases. Cytokine supplementation induction and transcription factor overexpression have become two mainstream methods of hESC-EC induction. Single-cell RNA-seq technology has been widely used to analyse dynamic processes during hESC-EC induction and components of induced endothelial cells. However, studies that used single-cell RNA-seq are mainly based on cytokine supplementation methods. In this study, we used a high-efficiency human embryonic stem cell-endothelial cell line (hESC-EC) called the "FLI1-PKC system" as a research model and employed single-cell RNA sequencing (scRNA-seq) to investigate the transcriptional landscape and cellular dynamics. METHODS The high-efficiency hESC-EC induction (FLI1-PKC) system was established in our previous study. We applied single-cell RNA sequencing (scRNA-seq) of the differentiated cells at different time points and investigated the gene expression profiles. RESULTS The FLI1-PKC induction system can directionally differentiate hESCs into mature endothelial cells with all the requisite functions. Unlike other hES-EC induction protocols, the FLI1-PKC method follows a different induction route; nonetheless, the transcriptome of induced endothelial cells (iECs) remains the same. The elevated number of activated transcription factors may explain why the FLI1-PKC system is more effective than other hES-EC protocols. CONCLUSION Our study has presented a single-cell transcriptional overview of a high-efficiency hESC-EC induction system, which can be used as a model and reference for further improvement in other hESC induction systems.
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Affiliation(s)
- XiangWang Xu
- Institute of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, School of Basic Medical Science, Central South University, Xiangya Road 88#, Changsha, 410008, Hunan, People's Republic of China
| | - JunRu Chen
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Hunan, 410008, Changsha, China
| | - Hao Zhao
- Xiangya Hospital of Central South University, Changsha, Human, China
| | - YuZe Pi
- Institute of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, School of Basic Medical Science, Central South University, Xiangya Road 88#, Changsha, 410008, Hunan, People's Republic of China
| | - Ge Lin
- Institute of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, School of Basic Medical Science, Central South University, Xiangya Road 88#, Changsha, 410008, Hunan, People's Republic of China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Hunan, 410008, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Development and Carcinogenesis, National Engineering and Research Center of Human Stem Cell, Changsha, 410008, Hunan, China
| | - Liang Hu
- Institute of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, School of Basic Medical Science, Central South University, Xiangya Road 88#, Changsha, 410008, Hunan, People's Republic of China.
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Hunan, 410008, Changsha, China.
- Hunan International Scientific and Technological Cooperation Base of Development and Carcinogenesis, National Engineering and Research Center of Human Stem Cell, Changsha, 410008, Hunan, China.
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7
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de Rus Jacquet A, Alpaugh M, Denis HL, Tancredi JL, Boutin M, Decaestecker J, Beauparlant C, Herrmann L, Saint-Pierre M, Parent M, Droit A, Breton S, Cicchetti F. The contribution of inflammatory astrocytes to BBB impairments in a brain-chip model of Parkinson's disease. Nat Commun 2023; 14:3651. [PMID: 37339976 DOI: 10.1038/s41467-023-39038-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 05/26/2023] [Indexed: 06/22/2023] Open
Abstract
Astrocyte dysfunction has previously been linked to multiple neurodegenerative disorders including Parkinson's disease (PD). Among their many roles, astrocytes are mediators of the brain immune response, and astrocyte reactivity is a pathological feature of PD. They are also involved in the formation and maintenance of the blood-brain barrier (BBB), but barrier integrity is compromised in people with PD. This study focuses on an unexplored area of PD pathogenesis by characterizing the interplay between astrocytes, inflammation and BBB integrity, and by combining patient-derived induced pluripotent stem cells with microfluidic technologies to generate a 3D human BBB chip. Here we report that astrocytes derived from female donors harboring the PD-related LRRK2 G2019S mutation are pro-inflammatory and fail to support the formation of a functional capillary in vitro. We show that inhibition of MEK1/2 signaling attenuates the inflammatory profile of mutant astrocytes and rescues BBB formation, providing insights into mechanisms regulating barrier integrity in PD. Lastly, we confirm that vascular changes are also observed in the human postmortem substantia nigra of both males and females with PD.
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Affiliation(s)
- A de Rus Jacquet
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada.
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada.
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, 20147, USA.
| | - M Alpaugh
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - H L Denis
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada
| | - J L Tancredi
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, 20147, USA
- Cell Biology R&D, Thermo Fisher Scientific, Frederick, MD, 21704, USA
| | - M Boutin
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada
| | - J Decaestecker
- Centre de Recherche du CHU de Québec - Université Laval, Axe Endocrinologie et Néphrologie, Québec, QC, G1V 4G2, Canada
| | - C Beauparlant
- Centre de Recherche du CHU de Québec - Université Laval, Axe Endocrinologie et Néphrologie, Québec, QC, G1V 4G2, Canada
| | - L Herrmann
- Centre de Recherche du CHU de Québec - Université Laval, Axe Endocrinologie et Néphrologie, Québec, QC, G1V 4G2, Canada
| | - M Saint-Pierre
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada
| | - M Parent
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada
- CERVO Brain Research Center, Québec, QC, G1E 1T2, Canada
| | - A Droit
- Centre de Recherche du CHU de Québec - Université Laval, Axe Endocrinologie et Néphrologie, Québec, QC, G1V 4G2, Canada
| | - S Breton
- Centre de Recherche du CHU de Québec - Université Laval, Axe Reproduction, santé de la mère et de l'enfant, Québec, QC, G1V 4G2, Canada
- Centre de recherche en reproduction, développement et santé intergénérationnelle, Université Laval, Québec, QC, G1V 4G2, Canada
| | - F Cicchetti
- Centre de Recherche du CHU de Québec - Université Laval, Axe Neurosciences, Québec, QC, G1V 4G2, Canada.
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1V 0A6, Canada.
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8
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Ishihara K, Takata K, Mizutani KI. Involvement of an Aberrant Vascular System in Neurodevelopmental, Neuropsychiatric, and Neuro-Degenerative Diseases. LIFE (BASEL, SWITZERLAND) 2023; 13:life13010221. [PMID: 36676170 PMCID: PMC9866034 DOI: 10.3390/life13010221] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
The vascular system of the prenatal brain is crucial for the development of the central nervous system. Communication between vessels and neural cells is bidirectional, and dysfunctional communication can lead to neurodevelopmental diseases. In the present review, we introduce neurodevelopmental and neuropsychiatric diseases potentially caused by disturbances in the neurovascular system and discuss candidate genes responsible for neurovascular system impairments. In contrast to diseases that can manifest during the developing stage, we have also summarized the disturbances of the neurovascular system in neurodegenerative diseases including Alzheimer's disease and Parkinson's disease. Furthermore, we discussed the role of abnormal vascularization and dysfunctional vessels in the development of neurovascular-related diseases.
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Affiliation(s)
- Keiichi Ishihara
- Department of Pathological Biochemistry, Division of Pathological Sciences, Kyoto Pharmaceutical University, Kyoto 607-8414, Japan
- Correspondence: ; Tel.: +81-75-595-4656
| | - Kazuyuki Takata
- Division of Integrated Pharmaceutical Sciences, Kyoto Pharmaceutical University, Kyoto 607-8414, Japan
| | - Ken-ichi Mizutani
- Laboratory of Stem Cell Biology, Graduate School of Pharmaceutical Sciences, Kobe Gakuin University, Kobe 650-8586, Japan
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9
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Crockett AM, Kebir H, Benallegue N, Adelman P, Gur RE, Sullivan K, Anderson SA, Alvarez JI. Immune status of the murine 22q11.2 deletion syndrome model. Eur J Immunol 2023; 53:e2249840. [PMID: 36337041 DOI: 10.1002/eji.202249840] [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: 01/31/2022] [Revised: 09/15/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022]
Abstract
Mice modeling the hemizygous deletion of chromosome 22q11.2 (22qMc) have been utilized to address various clinical phenotypes associated with the disease, including cardiac malformations, altered neural circuitry, and behavioral deficits. Yet, the status of the T cell compartment, an important clinical concern among 22q11.2 deletion syndrome (22qDS) patients, has not been addressed. While infancy and early childhood in 22qDS are associated with deficient T cell numbers and thymic hypoplasia, which can be severe in a small subset of patients, studies suggest normalization of the T cell counts by adulthood. We found that adult 22qMc do not exhibit thymic hypoplasia or altered thymic T cell development. Our findings that immune cell counts and inflammatory T cell activation are unaffected in 22qMc lend support to the hypothesis that human 22qDS immunodeficiencies are secondary to thymic hypoplasia, rather than intrinsic effects due to the deletion. Furthermore, the 22q11.2 deletion does not impact the differentiation capacity of T cells, nor their activity and response during inflammatory activation. Thus, 22qMc reflects the T cell compartment in adult 22qDS patients, and our findings suggest that 22qMc may serve as a novel model to address experimental and translational aspects of immunity in 22qDS.
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Affiliation(s)
- Alexis M Crockett
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hania Kebir
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Naïl Benallegue
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Inserm, Université de Nantes, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, F-44000, France
| | - Philippa Adelman
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Raquel E Gur
- Department of Child and Adolescent Psychiatry, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Kathleen Sullivan
- Division of Allergy and Immunology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Stewart A Anderson
- Department of Child and Adolescent Psychiatry, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jorge I Alvarez
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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10
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Cioffi S, Flore G, Martucciello S, Bilio M, Turturo MG, Illingworth E. VEGFR3 modulates brain microvessel branching in a mouse model of 22q11.2 deletion syndrome. Life Sci Alliance 2022; 5:5/12/e202101308. [PMID: 36216515 PMCID: PMC9553901 DOI: 10.26508/lsa.202101308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 09/23/2022] [Accepted: 09/23/2022] [Indexed: 11/24/2022] Open
Abstract
The loss of a single copy of TBX1 accounts for most of the clinical signs and symptoms of 22q11.2 deletion syndrome, a common genetic disorder that is characterized by multiple congenital anomalies and brain-related clinical problems, some of which likely have vascular origins. Tbx1 mutant mice have brain vascular anomalies, thus making them a useful model to gain insights into the human disease. Here, we found that the main morphogenetic function of TBX1 in the mouse brain is to suppress vessel branching morphogenesis through regulation of Vegfr3 We demonstrate that inactivating Vegfr3 in the Tbx1 expression domain on a Tbx1 mutant background enhances brain vessel branching and filopodia formation, whereas increasing Vegfr3 expression in this domain fully rescued these phenotypes. Similar results were obtained using an in vitro model of endothelial tubulogenesis. Overall, the results of this study provide genetic evidence that VEGFR3 is a regulator of early vessel branching and filopodia formation in the mouse brain and is a likely mediator of the brain vascular phenotype caused by Tbx1 loss of function.
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Affiliation(s)
- Sara Cioffi
- Institute of Genetics and Biophysics "ABT," CNR, Naples, Italy
| | - Gemma Flore
- Institute of Genetics and Biophysics "ABT," CNR, Naples, Italy
| | | | - Marchesa Bilio
- Institute of Genetics and Biophysics "ABT," CNR, Naples, Italy
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11
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Ribieras AJ, Ortiz YY, Li Y, Huerta CT, Le N, Shao H, Vazquez-Padron RI, Liu ZJ, Velazquez OC. E-Selectin/AAV2/2 Gene Therapy Alters Angiogenesis and Inflammatory Gene Profiles in Mouse Gangrene Model. Front Cardiovasc Med 2022; 9:929466. [PMID: 35783833 PMCID: PMC9243393 DOI: 10.3389/fcvm.2022.929466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 05/26/2022] [Indexed: 11/13/2022] Open
Abstract
For patients with chronic limb-threatening ischemia and limited revascularization options, alternate means for therapeutic angiogenesis and limb salvage are needed. E-selectin is a cell adhesion molecule that is critical for inflammation and neovascularization in areas of wound healing and ischemia. Here, we tested the efficacy of modifying ischemic limb tissue by intramuscular administration of E-selectin/AAV2/2 (adeno-associated virus serotype 2/2) to modulate angiogenic and inflammatory responses in a murine hindlimb gangrene model. Limb appearance, reperfusion, and functional recovery were assessed for 3 weeks after induction of ischemia. Mice receiving E-selectin/AAV2/2 gene therapy had reduced gangrene severity, increased limb and footpad perfusion, enhanced recruitment of endothelial progenitor cells, and improved performance on treadmill testing compared to control group. Histologically, E-selectin/AAV2/2 gene therapy was associated with increased vascularity and preserved myofiber integrity. E-selectin/AAV2/2 gene therapy also upregulated a panel of pro-angiogenic genes yet downregulated another group of genes associated with the inflammatory response. This novel gene therapy did not induce adverse effects on coagulability, or hematologic, hepatic, and renal function. Our findings highlight the potential of E-selectin/AAV2/2 gene therapy for improving limb perfusion and function in patients with chronic limb-threatening ischemia.
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Affiliation(s)
- Antoine J. Ribieras
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Yulexi Y. Ortiz
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Yan Li
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Carlos T. Huerta
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Nga Le
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Hongwei Shao
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Roberto I. Vazquez-Padron
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
- Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Zhao-Jun Liu
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
- Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL, United States
- Zhao-Jun Liu
| | - Omaida C. Velazquez
- Division of Vascular Surgery, DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
- Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL, United States
- *Correspondence: Omaida C. Velazquez
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12
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Huang S, Shu X, Ping J, Wu J, Wang J, Shidal C, Guo X, Bauer JA, Long J, Shu XO, Zheng W, Cai Q. TBX1 functions as a putative oncogene of breast cancer through promoting cell cycle progression. Carcinogenesis 2022; 43:12-20. [PMID: 34919666 PMCID: PMC8832409 DOI: 10.1093/carcin/bgab111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/04/2021] [Accepted: 11/25/2021] [Indexed: 12/24/2022] Open
Abstract
We have previously identified a genetic variant, rs34331122 in the 22q11.21 locus, as being associated with breast cancer risk in a genome-wide association study. This novel variant is located in the intronic region of the T-box transcription factor 1 (TBX1) gene. Cis-expression quantitative trait loci analysis showed that expression of TBX1 was regulated by the rs34331122 variant. In the current study, we investigated biological functions and potential molecular mechanisms of TBX1 in breast cancer. We found that TBX1 expression was significantly higher in breast cancer tumor tissues than adjacent normal breast tissues and increased with tumor stage (P < 0.05). We further knocked-down TBX1 gene expression in three breast cancer cell lines, MDA-MB-231, MCF-7 and T47D, using small interfering RNAs and examined consequential changes on cell oncogenicity and gene expression. TBX1 knock-down significantly inhibited breast cancer cell proliferation, colony formation, migration and invasion. RNA sequencing and flow cytometry analysis revealed that TBX1 knock-down in breast cancer cells induced cell cycle arrest in the G1 phase through disrupting expression of genes involved in the cell cycle pathway. Furthermore, survival analysis using the online Kaplan-Meier Plotter suggested that higher TBX1 expression was associated with worse outcomes in breast cancer patients, especially for estrogen receptor-positive breast cancer, with HRs (95% CIs) for overall survival (OS) and distant metastasis free survival (DMFS) of 1.5 (1.05-2.15) and 1.55 (1.10-2.18), respectively. In conclusion, our results suggest that the TBX1 gene may act as a putative oncogene of breast cancer through regulating expressions of cell cycle-related genes.
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Affiliation(s)
- Shuya Huang
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Department of Breast Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China
| | - Xiang Shu
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jie Ping
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Jie Wu
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Jifeng Wang
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Chris Shidal
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Xingyi Guo
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Joshua A Bauer
- Department of Biochemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Jirong Long
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Xiao-Ou Shu
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Wei Zheng
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Qiuyin Cai
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
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13
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Li Y, Xia Y, Zhu H, Luu E, Huang G, Sun Y, Sun K, Markx S, Leong KW, Xu B, Fu BM. Investigation of Neurodevelopmental Deficits of 22 q11.2 Deletion Syndrome with a Patient-iPSC-Derived Blood-Brain Barrier Model. Cells 2021; 10:cells10102576. [PMID: 34685556 PMCID: PMC8534009 DOI: 10.3390/cells10102576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/24/2021] [Accepted: 09/26/2021] [Indexed: 12/13/2022] Open
Abstract
The blood–brain barrier (BBB) is important in the normal functioning of the central nervous system. An altered BBB has been described in various neuropsychiatric disorders, including schizophrenia. However, the cellular and molecular mechanisms of such alterations remain unclear. Here, we investigate if BBB integrity is compromised in 22q11.2 deletion syndrome (also called DiGeorge syndrome), which is one of the validated genetic risk factors for schizophrenia. We utilized a set of human brain microvascular endothelial cells (HBMECs) derived from the induced pluripotent stem cell (iPSC) lines of patients with 22q11.2-deletion-syndrome-associated schizophrenia. We found that the solute permeability of the BBB formed from patient HBMECs increases by ~1.3–1.4-fold, while the trans-endothelial electrical resistance decreases to ~62% of the control values. Correspondingly, tight junction proteins and the endothelial glycocalyx that determine the integrity of the BBB are significantly disrupted. A transcriptome study also suggests that the transcriptional network related to the cell–cell junctions in the compromised BBB is substantially altered. An enrichment analysis further suggests that the genes within the altered gene expression network also contribute to neurodevelopmental disorders. Our findings suggest that neurovascular coupling can be targeted in developing novel therapeutical strategies for the treatment of 22q11.2 deletion syndrome.
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Affiliation(s)
- Yunfei Li
- Department of Biomedical Engineering, The City College of the City University of New York, New York, NY 10031, USA; (Y.L.); (Y.X.); (E.L.); (G.H.)
| | - Yifan Xia
- Department of Biomedical Engineering, The City College of the City University of New York, New York, NY 10031, USA; (Y.L.); (Y.X.); (E.L.); (G.H.)
| | - Huixiang Zhu
- Department of Psychiatry, Columbia University, New York, NY 10032, USA; (H.Z.); (Y.S.); (K.S.); (S.M.)
| | - Eric Luu
- Department of Biomedical Engineering, The City College of the City University of New York, New York, NY 10031, USA; (Y.L.); (Y.X.); (E.L.); (G.H.)
| | - Guangyao Huang
- Department of Biomedical Engineering, The City College of the City University of New York, New York, NY 10031, USA; (Y.L.); (Y.X.); (E.L.); (G.H.)
| | - Yan Sun
- Department of Psychiatry, Columbia University, New York, NY 10032, USA; (H.Z.); (Y.S.); (K.S.); (S.M.)
| | - Kevin Sun
- Department of Psychiatry, Columbia University, New York, NY 10032, USA; (H.Z.); (Y.S.); (K.S.); (S.M.)
| | - Sander Markx
- Department of Psychiatry, Columbia University, New York, NY 10032, USA; (H.Z.); (Y.S.); (K.S.); (S.M.)
| | - Kam W. Leong
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA;
| | - Bin Xu
- Department of Psychiatry, Columbia University, New York, NY 10032, USA; (H.Z.); (Y.S.); (K.S.); (S.M.)
- Correspondence: (B.X.); (B.M.F.); Tel.: +1-212-650-7531 (B.M.F.)
| | - Bingmei M. Fu
- Department of Biomedical Engineering, The City College of the City University of New York, New York, NY 10031, USA; (Y.L.); (Y.X.); (E.L.); (G.H.)
- Correspondence: (B.X.); (B.M.F.); Tel.: +1-212-650-7531 (B.M.F.)
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14
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Senescence Osteoblast-Derived Exosome-Mediated miR-139-5p Regulates Endothelial Cell Functions. BIOMED RESEARCH INTERNATIONAL 2021; 2021:5576023. [PMID: 33954179 PMCID: PMC8064779 DOI: 10.1155/2021/5576023] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/22/2021] [Accepted: 03/30/2021] [Indexed: 12/28/2022]
Abstract
The pathogenesis of osteoporosis is considered extremely intricate. Osteoblast differentiation and angiogenesis can greatly affect bone development and formation, given their coupling role in these processes. Exosome-mediated miRNA regulates cellular senescence, proliferation, and differentiation. However, whether senescent osteoblasts can regulate the senescence of vascular endothelial cell by miRNA through exosomal pathway remains unclear. In this study, senescent osteoblasts could regulate endothelial cell function, promote cell senescence and apoptosis, and decrease cell proliferation via exosomal pathway. miR-139-5p showed high expression in senescent osteoblasts and their exosomes. After senescent osteoblast-derived exosome treatment, miR-139-5p was also upregulated in endothelial cells. Furthermore, transfection of miR-139-5p mimic promoted the senescence and apoptosis of vascular endothelial cells and inhibited their proliferation and migration, whereas transfection of miR-139-5p inhibitor rescued the effect of D-galactose. Using double luciferase assay, TBX1 was confirmed to be a direct target gene of miR-139-5p. In conclusion, senescent osteoblast-derived exosome-mediated miR-139-5p regulated endothelial cell function via exosomal pathway. Our study revealed the role of osteoblast-derived exosomes in the bone environment during aging, providing a clue for inventing a new target therapy.
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15
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Shimizu R, Ishihara K, Kawashita E, Sago H, Yamakawa K, Mizutani KI, Akiba S. Decrease in the T-box1 gene expression in embryonic brain and adult hippocampus of down syndrome mouse models. Biochem Biophys Res Commun 2021; 535:87-92. [PMID: 33348080 DOI: 10.1016/j.bbrc.2020.12.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 12/09/2020] [Indexed: 11/26/2022]
Abstract
Down syndrome (DS, Trisomy 21) is the most common genetic cause of delayed fetal brain development and postnatal intellectual disability. Although delayed fetal brain development might be involved in intellectual disability, no evidence of an association between these abnormal phenotypes has been shown. To identify molecules differentially expressed in both the prenatal forebrain and adult hippocampus of Ts1Cje mice, a mouse model of DS, we employed a transcriptomic analysis. In the present study, we conducted transcriptomic profiling of the hippocampus of adult Ts1Cje mice and compared the results with the previously obtained transcriptomic profile of the prenatal forebrain at embryonic day 14.5. Results showed that the Tbx1 mRNA expression was decreased at both life stages. In addition, the decreased expression of Tbx1 mRNA was confirmed in other DS mouse models, Dp(16)1Yey/+ and Ts1Rhr mice, which carry longer and shorter trisomic regions, respectively. Taken together, these findings suggest that Tbx1 may link the delayed fetal brain development and intellectual disability in DS.
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Affiliation(s)
- Ryohei Shimizu
- Department of Pathological Biochemistry, Division of Pathological Sciences, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Keiichi Ishihara
- Department of Pathological Biochemistry, Division of Pathological Sciences, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan.
| | - Eri Kawashita
- Department of Pathological Biochemistry, Division of Pathological Sciences, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
| | - Haruhiko Sago
- Center for Maternal-Fetal, Neonatal and Reproductive Medicine, National Center for Child Health and Development, Tokyo, 157-8535, Japan
| | - Kazuhiro Yamakawa
- Department of Neurodevelopmental Disorder Genetics, Institute of Brain Sciences, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, 467-8601, Japan
| | - Ken-Ichi Mizutani
- Laboratory of Stem Cell Biology, Graduate School of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, 650-8586, Japan
| | - Satoshi Akiba
- Department of Pathological Biochemistry, Division of Pathological Sciences, Kyoto Pharmaceutical University, Kyoto, 607-8414, Japan
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16
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Park KB, Chapman T, Aldinger KA, Mirzaa GM, Zeiger J, Beck A, Glass IA, Hevner RF, Jansen AC, Marshall DA, Oegema R, Parrini E, Saneto RP, Curry CJ, Hall JG, Guerrini R, Leventer RJ, Dobyns WB. The spectrum of brain malformations and disruptions in twins. Am J Med Genet A 2020; 185:2690-2718. [PMID: 33205886 DOI: 10.1002/ajmg.a.61972] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/27/2020] [Accepted: 10/24/2020] [Indexed: 12/12/2022]
Abstract
Twins have an increased risk for congenital malformations and disruptions, including defects in brain morphogenesis. We analyzed data on brain imaging, zygosity, sex, and fetal demise in 56 proband twins and 7 less affected co-twins with abnormal brain imaging and compared them to population-based data and to a literature series. We separated our series into malformations of cortical development (MCD, N = 39), cerebellar malformations without MCD (N = 13), and brain disruptions (N = 11). The MCD group included 37/39 (95%) with polymicrogyria (PMG), 8/39 (21%) with pia-ependymal clefts (schizencephaly), and 15/39 (38%) with periventricular nodular heterotopia (PNH) including 2 with PNH but not PMG. Cerebellar malformations were found in 19 individuals including 13 with a cerebellar malformation only and another 6 with cerebellar malformation and MCD. The pattern varied from diffuse cerebellar hypoplasia to classic Dandy-Walker malformation. Brain disruptions were seen in 11 individuals with hydranencephaly, porencephaly, or white matter loss without cysts. Our series included an expected statistically significant excess of monozygotic (MZ) twin pairs (22/41 MZ, 54%) compared to population data (482/1448 MZ, 33.3%; p = .0110), and an unexpected statistically significant excess of dizygotic (DZ) twins (19/41, 46%) compared to the literature cohort (1/46 DZ, 2%; p < .0001. Recurrent association with twin-twin transfusion syndrome, intrauterine growth retardation, and other prenatal factors support disruption of vascular perfusion as the most likely unifying cause.
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Affiliation(s)
- Kaylee B Park
- University of Washington School of Medicine, Seattle, Washington, USA
| | - Teresa Chapman
- Department of Radiology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Kimberly A Aldinger
- Seattle Children's Research Institute, Center for Integrative Brain Research, Seattle, Washington, USA
| | - Ghayda M Mirzaa
- Seattle Children's Research Institute, Center for Integrative Brain Research, Seattle, Washington, USA.,Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA.,Brotman Baty Institute for Precision Medicine, Seattle, Washington, USA
| | - Jordan Zeiger
- Seattle Children's Research Institute, Center for Integrative Brain Research, Seattle, Washington, USA
| | - Anita Beck
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
| | - Ian A Glass
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
| | - Robert F Hevner
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Anna C Jansen
- Neurogenetics Research Group, Reproduction Genetics and Regenerative Medicine Research Cluster, Vrije Universiteit Brussel, Brussels, Belgium.,Pediatric Neurology Unit, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Desiree A Marshall
- Department of Anatomic Pathology and Neuropathology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Renske Oegema
- University Medical Center Utrecht, Department of Genetics, Utrecht, The Netherlands
| | - Elena Parrini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Meyer Children's Hospital, University of Florence, Florence, Italy
| | - Russell P Saneto
- Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Cynthia J Curry
- Genetic Medicine, Department of Pediatrics, University of California San Francisco, Fresno, California, USA
| | - Judith G Hall
- Departments of Medical Genetics and Pediatrics, University of British Columbia and BC Children's Hospital, Vancouver, Canada
| | - Renzo Guerrini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Meyer Children's Hospital, University of Florence, Florence, Italy
| | - Richard J Leventer
- Department of Neurology, Royal Children's Hospital, Murdoch Children's Research Institute and University of Melbourne Department of Pediatrics, Melbourne, Australia
| | - William B Dobyns
- Department of Pediatrics, Division of Genetics and Metabolism, University of Minnesota, Minneapolis, Minnesota, USA
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17
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Martucciello S, Turturo MG, Bilio M, Cioffi S, Chen L, Baldini A, Illingworth E. A dual role for Tbx1 in cardiac lymphangiogenesis through genetic interaction with Vegfr3. FASEB J 2020; 34:15062-15079. [PMID: 32951265 DOI: 10.1096/fj.201902202r] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 08/11/2020] [Accepted: 08/31/2020] [Indexed: 12/15/2022]
Abstract
The transcription factor TBX1 is the major gene implicated in 22q11.2 deletion syndrome (22q11.2DS). The complex clinical phenotype includes vascular anomalies and a recent report presented new cases of primary lymphedema in 22q11.2DS patients. We have previously shown that TBX1 is required for systemic lymphatic vessel development in prenatal mice and it is critical for their survival postnatally. Using loss-of-function genetics and transgenesis in the mouse, we show here a strong genetic interaction between Tbx1 and Vegfr3 in cardiac lymphangiogenesis. Intriguingly, we found that different aspects of the cardiac lymphatic phenotype in Tbx1-Vegfr3 compound heterozygotes were regulated independently by the two genes, with Tbx1 primarily regulating vessel numbers and Vegfr3 vessel morphology. Consistent with this observation, Tbx1Cre -activated expression of a Vegfr3 transgene rescued partially the cardiac lymphatic abnormalities in compound heterozygotes. Through time-controlled genetic experiments, we show that Tbx1 is activated and required in cardiac lymphatic endothelial cell (LEC) progenitors between E10.5 and E11.5. Furthermore, we found that it is also required later in development for the growth of the cardiac lymphatics. Finally, our study revealed a differential sensitivity between ventral and dorsal cardiac lymphatics to the effects of altered Tbx1 and Vegfr3 gene dosage, and we show that this likely results from an earlier requirement for Tbx1 in ventral cardiac LEC progenitors.
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Affiliation(s)
- Stefania Martucciello
- IRCCS Neuromed, Pozzilli, Italy.,Department of Chemistry and Biology, University of Salerno, Fisciano, Italy
| | | | - Marchesa Bilio
- Institute of Genetics and Biophysics "ABT", CNR, Naples, Italy
| | - Sara Cioffi
- Institute of Genetics and Biophysics "ABT", CNR, Naples, Italy
| | - Li Chen
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Antonio Baldini
- Institute of Genetics and Biophysics "ABT", CNR, Naples, Italy.,Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples, Italy
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18
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Morphological alteration of myelin-oligodendrocytes in a schizophrenic patient with 22q11.2 deletion syndrome: An autopsy study. Schizophr Res 2020; 223:353-355. [PMID: 32712040 DOI: 10.1016/j.schres.2020.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/08/2020] [Accepted: 07/11/2020] [Indexed: 12/24/2022]
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19
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Sullivan KE. Chromosome 22q11.2 deletion syndrome and DiGeorge syndrome. Immunol Rev 2019; 287:186-201. [PMID: 30565249 DOI: 10.1111/imr.12701] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 07/30/2018] [Indexed: 12/19/2022]
Abstract
Chromosome 22q11.2 deletion syndrome is the most common microdeletion syndrome in humans. The effects are protean and highly variable, making a unified approach difficult. Nevertheless, commonalities have been identified and white papers with recommended evaluations and anticipatory guidance have been published. This review will cover the immune system in detail and discuss both the primary features and the secondary features related to thymic hypoplasia. A brief discussion of the other organ system involvement will be provided for context. The immune system, percolating throughout the body can impact the function of other organs through allergy or autoimmune disease affecting organs in deleterious manners. Our work has shown that the primary effect of thymic hypoplasia is to restrict T cell production. Subsequent homeostatic proliferation and perhaps other factors drive a Th2 polarization, most obvious in adulthood. This contributes to atopic risk in this population. Thymic hypoplasia also contributes to low regulatory T cells and this may be part of the overall increased risk of autoimmunity. Collectively, the effects are complex and often age-dependent. Future goals of improving thymic function or augmenting thymic volume may offer a direct intervention to ameliorate infections, atopy, and autoimmunity.
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Affiliation(s)
- Kathleen E Sullivan
- The Children's Hospital of Philadelphia, The University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
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20
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Zinkstok JR, Boot E, Bassett AS, Hiroi N, Butcher NJ, Vingerhoets C, Vorstman JAS, van Amelsvoort TAMJ. Neurobiological perspective of 22q11.2 deletion syndrome. Lancet Psychiatry 2019; 6:951-960. [PMID: 31395526 PMCID: PMC7008533 DOI: 10.1016/s2215-0366(19)30076-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/26/2019] [Accepted: 02/26/2019] [Indexed: 12/20/2022]
Abstract
22q11.2 deletion syndrome is characterised by a well defined microdeletion that is associated with a high risk of neuropsychiatric disorders, including intellectual disability, schizophrenia, attention-deficit hyperactivity disorder, autism spectrum disorder, anxiety disorders, seizures and epilepsy, and early-onset Parkinson's disease. Preclinical and clinical data reveal substantial variability of the neuropsychiatric phenotype despite the shared underlying deletion in this genetic model. Factors that might explain this variability include genetic background effects, additional rare pathogenic variants, and potential regulatory functions of some genes in the 22q11.2 deletion region. These factors might also be relevant to the pathophysiology of these neuropsychiatric disorders in the general population. We review studies that might provide insight into pathophysiological mechanisms underlying the expression of neuropsychiatric disorders in 22q11.2 deletion syndrome, and potential implications for these common disorders in the general (non-deleted) population. The recurrent hemizygous 22q11.2 deletion, associated with 22q11.2 deletion syndrome, has attracted attention as a genetic model for common neuropsychiatric disorders because of its association with substantially increased risk of such disorders.1 Studying such a model has many advantages. First, 22q11.2 deletion has been genetically well characterised.2 Second, most genes present in the region typically deleted at the 22q11.2 locus are expressed in the brain.3-5 Third, genetic diagnosis might be made early in life, long before recognisable neuropsychiatric disorders have emerged. Thus, this genetic condition offers a unique opportunity for early intervention, and monitoring individuals with 22q11.2 deletion syndrome throughout life could provide important information on factors contributing to disease risk and protection. Despite the commonly deleted region being shared by about 90% of individuals with 22q11.2 deletion syndrome, neuropsychiatric outcomes are highly variable between individuals and across the lifespan. A clear link remains to be established between genotype and phenotype.3,5 In this Review, we summarise preclinical and clinical studies investigating biological mechanisms in 22q11.2 deletion syndrome, with a focus on those that might provide insight into mechanisms underlying neuropsychiatric disorders in 22q11.2 deletion syndrome and in the general population.
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Affiliation(s)
- Janneke R Zinkstok
- Department of Psychiatry and Brain Center, University Medical Center, Utrecht, Netherlands.
| | - Erik Boot
- 's Heeren Loo Zorggroep, Amersfoort, Netherlands; The Dalglish Family 22q Clinic for Adults with 22q11.2 Deletion Syndrome, University Health Network, Toronto, ON, Canada; Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, Netherlands; Department of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam, Netherlands
| | - Anne S Bassett
- The Dalglish Family 22q Clinic for Adults with 22q11.2 Deletion Syndrome, University Health Network, Toronto, ON, Canada; Clinical Genetics Research Program, Centre for Addiction and Mental Health, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada; Campbell Family Mental Health Research Institute, Toronto, ON, Canada; Division of Cardiology & Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Noboru Hiroi
- Department of Pharmacology, Department of Cellular and Integrative Physiology, Department of Cell Systems and Anatomy, and Department of Psychiatry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Nancy J Butcher
- Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, Toronto, ON, Canada
| | - Claudia Vingerhoets
- Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, Netherlands; Department of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam, Netherlands
| | - Jacob A S Vorstman
- Sick Children Research Institute, Genetics & Genome Biology Program, Toronto, ON, Canada
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21
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Placental Pathology and Neuroimaging Correlates in Neonates with Congenital Heart Disease. Sci Rep 2019; 9:4137. [PMID: 30858514 PMCID: PMC6411739 DOI: 10.1038/s41598-019-40894-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 02/19/2019] [Indexed: 01/20/2023] Open
Abstract
Congenital heart disease (CHD) is an independent risk factor for brain injury, including stroke, and poor neurodevelopmental outcomes, and placental abnormalities may represent an additional risk factor for brain injury in neonates. The incidence and scope of placental pathology and relationship to fetal brain abnormalities in pregnancies complicated by fetal CHD has not been explored to our knowledge. In order to determine the prevalence of placental pathology findings and whether placental findings are associated with postnatal brain injury in pregnancies complicated by fetal CHD, we reviewed placental pathology reports for 51 pregnancies complicated by CHD and scored available postnatal, pre-operative brain MRI for brain pathology. Overall, 57% of CHD infants had abnormal placental pathology. Pregnancies complicated by CHD with aortic obstruction (AO) were significantly more likely than those with no obstruction to have abnormal placental pathology (79% vs. 44%). There was a trend toward more severe brain lesions amongst patients with brain lesions and placental abnormality (55% moderate/severe) compared to those without placental abnormality (11% moderate/severe). These data suggest that placental abnormalities are common in CHD and may have a compounding effect on brain lesions in this high-risk population.
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22
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Zhao Y, Guo T, Fiksinski A, Breetvelt E, McDonald-McGinn DM, Crowley TB, Diacou A, Schneider M, Eliez S, Swillen A, Breckpot J, Vermeesch J, Chow EWC, Gothelf D, Duijff S, Evers R, van Amelsvoort TA, van den Bree M, Owen M, Niarchou M, Bearden CE, Ornstein C, Pontillo M, Buzzanca A, Vicari S, Armando M, Murphy KC, Murphy C, Garcia-Minaur S, Philip N, Campbell L, Morey-Cañellas J, Raventos J, Rosell J, Heine-Suner D, Shprintzen RJ, Gur RE, Zackai E, Emanuel BS, Wang T, Kates WR, Bassett AS, Vorstman JAS, Morrow BE. Variance of IQ is partially dependent on deletion type among 1,427 22q11.2 deletion syndrome subjects. Am J Med Genet A 2018; 176:2172-2181. [PMID: 30289625 PMCID: PMC6209529 DOI: 10.1002/ajmg.a.40359] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/02/2018] [Accepted: 05/23/2018] [Indexed: 12/28/2022]
Abstract
The 22q11.2 deletion syndrome is caused by non-allelic homologous recombination events during meiosis between low copy repeats (LCR22) termed A, B, C, and D. Most patients have a typical LCR22A-D (AD) deletion of 3 million base pairs (Mb). In this report, we evaluated IQ scores in 1,478 subjects with 22q11.2DS. The mean of full scale IQ, verbal IQ, and performance IQ scores in our cohort were 72.41 (standard deviation-SD of 13.72), 75.91(SD of 14.46), and 73.01(SD of 13.71), respectively. To investigate whether IQ scores are associated with deletion size, we examined individuals with the 3 Mb, AD (n = 1,353) and nested 1.5 Mb, AB (n = 74) deletions, since they comprised the largest subgroups. We found that full scale IQ was decreased by 6.25 points (p = .002), verbal IQ was decreased by 8.17 points (p = .0002) and performance IQ was decreased by 4.03 points (p = .028) in subjects with the AD versus AB deletion. Thus, individuals with the smaller, 1.5 Mb AB deletion have modestly higher IQ scores than those with the larger, 3 Mb AD deletion. Overall, the deletion of genes in the AB region largely explains the observed low IQ in the 22q11.2DS population. However, our results also indicate that haploinsufficiency of genes in the LCR22B-D region (BD) exert an additional negative impact on IQ. Furthermore, we did not find evidence of a confounding effect of severe congenital heart disease on IQ scores in our cohort.
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Affiliation(s)
- Yingjie Zhao
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Tingwei Guo
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ania Fiksinski
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, the Netherlands
- Center for Addiction and Mental Health and the University of Toronto, Toronto, Canada
| | - Elemi Breetvelt
- Center for Addiction and Mental Health and the University of Toronto, Toronto, Canada
| | - Donna M. McDonald-McGinn
- Division of Human Genetics, Children’s Hospital of Philadelphia and Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Terrence B. Crowley
- Division of Human Genetics, Children’s Hospital of Philadelphia and Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Alexander Diacou
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Maude Schneider
- Developmental Imaging and Psychopathology Lab, University of Geneva School of Medicine, Geneva, Switzerland
| | - Stephan Eliez
- Developmental Imaging and Psychopathology Lab, University of Geneva School of Medicine, Geneva, Switzerland
| | - Ann Swillen
- Center for Human Genetics, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Jeroen Breckpot
- Center for Human Genetics, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Joris Vermeesch
- Center for Human Genetics, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Eva W. C. Chow
- Center for Addiction and Mental Health and the University of Toronto, Toronto, Canada
| | - Doron Gothelf
- Sackler Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
- The Child Psychiatry Division, Edmond and Lily Sapfra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
| | - Sasja Duijff
- Department of Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Rens Evers
- Department of Psychiatry and Psychology, Maastricht University, Maastricht, The Netherlands
| | | | - Marianne van den Bree
- MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neuroscience, Cardiff University, Cardiff, Wales
| | - Michael Owen
- MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neuroscience, Cardiff University, Cardiff, Wales
| | - Maria Niarchou
- MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neuroscience, Cardiff University, Cardiff, Wales
| | - Carrie E. Bearden
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, Los Angeles, CA, USA
| | - Claudia Ornstein
- Department of Psychiatry, Hospital Clinico Universidad de Chile,, Santiago, Chile
| | - Maria Pontillo
- Child and Adolescence Neuropsychiatry Unit, Department of Neuroscience, Children Hospital Bambino Gesu, Rome, Italy
| | - Antonino Buzzanca
- Department of Human Neuroscience, University Sapienza of Rome, Rome, Italy
| | - Stefano Vicari
- Child and Adolescence Neuropsychiatry Unit, Department of Neuroscience, Children Hospital Bambino Gesu, Rome, Italy
| | - Marco Armando
- Developmental Imaging and Psychopathology Lab, University of Geneva School of Medicine, Geneva, Switzerland
- Child and Adolescence Neuropsychiatry Unit, Department of Neuroscience, Children Hospital Bambino Gesu, Rome, Italy
| | - Kieran C. Murphy
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Clodagh Murphy
- Department of Psychiatry, King’s College London, London, England
| | - Sixto Garcia-Minaur
- Section of Clinical Genetics and Dismorphology, Instituto de Genética Médica y Molecular, INGEMM, Hospital Universitario La Paz, Madrid, Spain
| | - Nicole Philip
- Department of Medical Genetics, APHM, MMG, INSERM, Aix-Marseille University, Marseille, France
| | - Linda Campbell
- School of Psychology, University of Newcastle, Newcastle, Australia
| | | | | | - Jordi Rosell
- Section of Genetics, Hospital Son Espases, Palma, Spain
| | | | - Robert J. Shprintzen
- The Virtual Center for Velo-Cardio-Facial Syndrome and Related Disorders, Syracuse, NY, USA
| | - Raquel E. Gur
- Department of Psychiatry and the Lifespan Brain Institute, Perelman School of Medicine and Children’s Hospital of Philadelphia, University of Pennsylvania, Philadelphia, USA
| | - Elaine Zackai
- Division of Human Genetics, Children’s Hospital of Philadelphia and Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Beverly S. Emanuel
- Division of Human Genetics, Children’s Hospital of Philadelphia and Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Tao Wang
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Wendy R. Kates
- Department of Psychiatry and Behavioral Sciences, and Program in Neuroscience, SUNY Upstate Medical University, Syracuse, USA
| | - Anne S. Bassett
- Center for Addiction and Mental Health and the University of Toronto, Toronto, Canada
- The Dalglish 22q Clinic for Adults, Toronto General Hospital, University Health Network, Toronto, Canada
| | | | - Bernice E. Morrow
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
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23
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Antoine MW, Zhu X, Dieterich M, Brandt T, Vijayakumar S, McKeehan N, Arezzo JC, Zukin RS, Borkholder DA, Jones SM, Frisina RD, Hébert JM. Early uneven ear input induces long-lasting differences in left-right motor function. PLoS Biol 2018. [PMID: 29534062 PMCID: PMC5849283 DOI: 10.1371/journal.pbio.2002988] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
How asymmetries in motor behavior become established normally or atypically in mammals remains unclear. An established model for motor asymmetry that is conserved across mammals can be obtained by experimentally inducing asymmetric striatal dopamine activity. However, the factors that can cause motor asymmetries in the absence of experimental manipulations to the brain remain unknown. Here, we show that mice with inner ear dysfunction display a robust left or right rotational preference, and this motor preference reflects an atypical asymmetry in cortico-striatal neurotransmission. By unilaterally targeting striatal activity with an antagonist of extracellular signal-regulated kinase (ERK), a downstream integrator of striatal neurotransmitter signaling, we can reverse or exaggerate rotational preference in these mice. By surgically biasing vestibular failure to one ear, we can dictate the direction of motor preference, illustrating the influence of uneven vestibular failure in establishing the outward asymmetries in motor preference. The inner ear–induced striatal asymmetries identified here intersect with non–ear-induced asymmetries previously linked to lateralized motor behavior across species and suggest that aspects of left–right brain function in mammals can be ontogenetically influenced by inner ear input. Consistent with inner ear input contributing to motor asymmetry, we also show that, in humans with normal ear function, the motor-dominant hemisphere, measured as handedness, is ipsilateral to the ear with weaker vestibular input. Despite a long-standing fascination with asymmetries in left–right brain function, very little is known about the causes of functional brain asymmetry in mammals, which appear independent of the mechanisms that create anatomical asymmetries during development. Asymmetries in motor function are a common example and include preferred turning direction, handedness, and footedness. In this study, using mouse models, we establish a causal link between transient imbalances in degenerating inner ear function and the establishment of stable asymmetries in neural pathways that regulate motor activity and in motor behavior. Our study also suggests that shared mechanisms may underlie lateralized motor behaviors across mammalian species. For example, we show that in humans with normal ear function, the strength of the vestibular response from each ear in the forebrain correlates with asymmetric motor behavior, measured as handedness. In a broader sense, our study reveals a conceptually novel role for sensory input in shaping the asymmetric distribution of brain function, a process for which there is otherwise no clear mechanism.
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Affiliation(s)
- Michelle W. Antoine
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, United States of America
- * E-mail: (MWA); (JMH)
| | - Xiaoxia Zhu
- Departments of Chemical & Biomedical Engineering and Communication Sciences & Disorders, Global Center for Hearing & Speech Research, University of South Florida, Tampa, Florida, United States of America
| | - Marianne Dieterich
- Department of Neurology, Ludwig-Maximilians University Munich and Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Thomas Brandt
- Institute for Clinical Neurosciences, Ludwig-Maximilians University Munich, Munich, Germany
| | - Sarath Vijayakumar
- Department of Special Education and Communication Disorders, University of Nebraska-Lincoln, Lincoln, Nebraska, United States of America
| | - Nicholas McKeehan
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Joseph C. Arezzo
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - R. Suzanne Zukin
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - David A. Borkholder
- Microsystems Engineering, Rochester Institute of Technology, Rochester, New York, United States of America
| | - Sherri M. Jones
- Department of Special Education and Communication Disorders, University of Nebraska-Lincoln, Lincoln, Nebraska, United States of America
| | - Robert D. Frisina
- Departments of Chemical & Biomedical Engineering and Communication Sciences & Disorders, Global Center for Hearing & Speech Research, University of South Florida, Tampa, Florida, United States of America
| | - Jean M. Hébert
- Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, United States of America
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York, United States of America
- * E-mail: (MWA); (JMH)
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24
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Bohm LA, Zhou TC, Mingo TJ, Dugan SL, Patterson RJ, Sidman JD, Roby BB. Neuroradiographic findings in 22q11.2 deletion syndrome. Am J Med Genet A 2017; 173:2158-2165. [PMID: 28577347 DOI: 10.1002/ajmg.a.38304] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/20/2017] [Accepted: 05/10/2017] [Indexed: 10/19/2022]
Abstract
22q11.2 deletion syndrome (22q11.2DS) is a common genetic disorder with enormous phenotypic heterogeneity. Despite the established prevalence of developmental and neuropsychiatric issues in this syndrome, its neuroanatomical correlates are not as well understood. A retrospective chart review was performed on 111 patients diagnosed with 22q11.2DS. Of the 111 patients, 24 with genetically confirmed 22q11.2 deletion and brain MRI or MRA were included in this study. The most common indications for imaging were unexplained developmental delay (6/24), seizures of unknown etiology (5/24), and unilateral weakness (3/24). More than half (13/24) of the patients had significant radiographic findings, including persistent cavum septi pellucidi and/or cavum vergae (8/24), aberrant cortical veins (6/24), polymicrogyria or cortical dysplasia (4/24), inner ear deformities (3/24), hypoplastic internal carotid artery (2/24), and hypoplastic cerebellum (1/24). These findings reveal the types and frequencies of brain malformations in this case series, and suggest that the prevalence of neuroanatomical abnormalities in 22q11.2DS may be underestimated. Understanding indications for imaging and frequently encountered brain malformations will result in early diagnosis and intervention in an effort to optimize patient outcomes.
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Affiliation(s)
- Lauren A Bohm
- University of Minnesota, Minneapolis, Minnesota.,ENT and Facial Plastic Surgery, Children's Minnesota, Children's Specialty Center, Minneapolis, Minnesota.,Division of Pediatric Otolaryngology, University of Michigan, Ann Arbor, Michigan
| | - Tom C Zhou
- University of Minnesota, Minneapolis, Minnesota
| | | | - Sarah L Dugan
- Medical Genetics, Children's Minnesota, Minneapolis, Minnesota.,Division of Pediatric Genetics, University of Utah, Salt Lake City, Utah
| | | | - James D Sidman
- University of Minnesota, Minneapolis, Minnesota.,ENT and Facial Plastic Surgery, Children's Minnesota, Children's Specialty Center, Minneapolis, Minnesota
| | - Brianne B Roby
- University of Minnesota, Minneapolis, Minnesota.,ENT and Facial Plastic Surgery, Children's Minnesota, Children's Specialty Center, Minneapolis, Minnesota
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25
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Flore G, Cioffi S, Bilio M, Illingworth E. Cortical Development Requires Mesodermal Expression of Tbx1, a Gene Haploinsufficient in 22q11.2 Deletion Syndrome. Cereb Cortex 2017; 27:2210-2225. [PMID: 27005988 DOI: 10.1093/cercor/bhw076] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
In mammals, proper temporal control of neurogenesis and neural migration during embryonic development ensures correct formation of the cerebral cortex. Changes in the distribution of cortical projection neurons and interneurons are associated with behavioral disorders and psychiatric diseases, including schizophrenia and autism, suggesting that disrupted cortical connectivity contributes to the brain pathology. TBX1 is the major candidate gene for 22q11.2 deletion syndrome (22q11.2DS), a chromosomal deletion disorder characterized by a greatly increased risk for schizophrenia. We have previously shown that Tbx1 heterozygous mice have reduced prepulse inhibition, a behavioral abnormality that is associated with 22q11.2DS and nonsyndromic schizophrenia. Here, we show that loss of Tbx1 disrupts corticogenesis in mice by promoting premature neuronal differentiation in the medio-lateral embryonic cortex, which gives rise to the somatosensory cortex (S1). In addition, we found altered polarity in both radially migrating excitatory neurons and tangentially migrating inhibitory interneurons. Together, these abnormalities lead to altered lamination in the S1 at the terminal stages of corticogenesis in Tbx1 null mice and similar anomalies in Tbx1 heterozygous adult mice. Finally, we show that mesoderm-specific inactivation of Tbx1 is sufficient to recapitulate the brain phenotype indicating that Tbx1 exerts a cell nonautonomous role in cortical development from the mesoderm.
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Affiliation(s)
- Gemma Flore
- Institute of Genetics and Biophysics "ABT", CNR, 80131 Naples, Italy
| | - Sara Cioffi
- Institute of Genetics and Biophysics "ABT", CNR, 80131 Naples, Italy.,Bio-Ker srl, c/o Institute of Genetics and Biophysics "ABT", CNR, 80131 Naples, Italy
| | - Marchesa Bilio
- Institute of Genetics and Biophysics "ABT", CNR, 80131 Naples, Italy
| | - Elizabeth Illingworth
- Institute of Genetics and Biophysics "ABT", CNR, 80131 Naples, Italy.,Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, Italy
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26
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The Severity of Vestibular Dysfunction in Deafness as a Determinant of Comorbid Hyperactivity or Anxiety. J Neurosci 2017; 37:5144-5154. [PMID: 28438970 DOI: 10.1523/jneurosci.3545-16.2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 03/29/2017] [Accepted: 04/02/2017] [Indexed: 12/11/2022] Open
Abstract
Attention-deficit/hyperactivity disorder (ADHD) and anxiety-related disorders occur at rates 2-3 times higher in deaf compared with hearing children. Potential explanations for these elevated rates and the heterogeneity of behavioral disorders associated with deafness have usually focused on socio-environmental rather than biological effects. Children with the 22q11.2 deletion or duplication syndromes often display hearing loss and behavioral disorders, including ADHD and anxiety-related disorders. Here, we show that mouse mutants with either a gain or loss of function of the T-Box transcription factor gene, Tbx1, which lies within the 22q11.2 region and is responsible for most of the syndromic defects, exhibit inner ear defects and hyperactivity. Furthermore, we show that (1) inner ear dysfunction due to the tissue-specific loss of Tbx1 or Slc12a2, which encodes a sodium-potassium-chloride cotransporter and is also necessary for inner ear function, causes hyperactivity; (2) vestibular rather than auditory failure causes hyperactivity; and (3) the severity rather than the age of onset of vestibular dysfunction differentiates whether hyperactivity or anxiety co-occurs with inner ear dysfunction. Together, these findings highlight a biological link between inner ear dysfunction and behavioral disorders and how sensory abnormalities can contribute to the etiology of disorders traditionally considered of cerebral origin.SIGNIFICANCE STATEMENT This study examines the biological rather than socio-environmental reasons why hyperactivity and anxiety disorders occur at higher rates in deaf individuals. Using conditional genetic approaches in mice, the authors show that (1) inner ear dysfunction due to either Tbx1 or Slc12a2 mutations cause hyperactivity; (2) it is vestibular dysfunction, which frequently co-occurs with deafness but often remains undiagnosed, rather than auditory dysfunction that causes hyperactivity and anxiety-related symptoms; and (3) the severity of vestibular dysfunction can predict whether hyperactivity or anxiety coexist with inner ear dysfunction. These findings suggest a need to evaluate vestibular function in hearing impaired individuals, especially those who exhibit hyperactive and anxiety-related symptoms.
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Ping LY, Chuang YA, Hsu SH, Tsai HY, Cheng MC. Screening for Mutations in the TBX1 Gene on Chromosome 22q11.2 in Schizophrenia. Genes (Basel) 2016; 7:genes7110102. [PMID: 27879657 PMCID: PMC5126788 DOI: 10.3390/genes7110102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/14/2016] [Accepted: 11/16/2016] [Indexed: 01/22/2023] Open
Abstract
A higher-than-expected frequency of schizophrenia in patients with 22q11.2 deletion syndrome suggests that chromosome 22q11.2 harbors the responsive genes related to the pathophysiology of schizophrenia. The TBX1 gene, which maps to the region on chromosome 22q11.2, plays a vital role in neuronal functions. Haploinsufficiency of the TBX1 gene is associated with schizophrenia endophenotype. This study aimed to investigate whether the TBX1 gene is associated with schizophrenia. We searched for mutations in the TBX1 gene in 652 patients with schizophrenia and 567 control subjects using a re-sequencing method and conducted a reporter gene assay. We identified six SNPs and 25 rare mutations with no association with schizophrenia from Taiwan. Notably, we identified two rare schizophrenia-specific mutations (c.-123G>C and c.-11delC) located at 5' UTR of the TBX1 gene. The reporter gene assay showed that c.-123C significantly decreased promoter activity, while c.-11delC increased promoter activity compared with the wild-type. Our findings suggest that the TBX1 gene is unlikely a major susceptible gene for schizophrenia in an ethnic Chinese population for Taiwan, but a few rare mutations in the TBX1 gene may contribute to the pathogenesis of schizophrenia in some patients.
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Affiliation(s)
- Lieh-Yung Ping
- Department of Psychiatry, Yuli Branch, Taipei Veterans General Hospital, Hualien 98142, Taiwan.
| | - Yang-An Chuang
- Department of Psychiatry, Yuli Branch, Taipei Veterans General Hospital, Hualien 98142, Taiwan.
| | - Shih-Hsin Hsu
- Department of Psychiatry, Yuli Branch, Taipei Veterans General Hospital, Hualien 98142, Taiwan.
| | - Hsin-Yao Tsai
- Department of Psychiatry, Yuli Branch, Taipei Veterans General Hospital, Hualien 98142, Taiwan.
| | - Min-Chih Cheng
- Department of Psychiatry, Yuli Branch, Taipei Veterans General Hospital, Hualien 98142, Taiwan.
- Center for General Education, St. Mary's Junior College of Medicine, Nursing and Management, Yilan County 26644, Taiwan.
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Abstract
Recent data have paved the way to mechanistic studies into the role of Tbx1 during development. Tbx1 is haploinsufficient and is involved in an important genetic disorder. The gene encodes a T-box transcription factor that is expressed from approximately E7.5 in mouse embryos and continues to be expressed in a highly dynamic manner. It is neither a strong transcriptional activator nor a strong repressor, but it regulates a large number of genes through epigenetic modifications. Here, we review recent literature concerning mechanisms of gene regulation by Tbx1 and its role in mammalian development, with a special focus on the cardiac, vascular, and central nervous systems.
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Fulcoli FG, Franzese M, Liu X, Zhang Z, Angelini C, Baldini A. Rebalancing gene haploinsufficiency in vivo by targeting chromatin. Nat Commun 2016; 7:11688. [PMID: 27256596 PMCID: PMC4895808 DOI: 10.1038/ncomms11688] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 04/19/2016] [Indexed: 11/28/2022] Open
Abstract
Congenital heart disease (CHD) affects eight out of 1,000 live births and is a major social and health-care burden. A common genetic cause of CHD is the 22q11.2 deletion, which is the basis of the homonymous deletion syndrome (22q11.2DS), also known as DiGeorge syndrome. Most of its clinical spectrum is caused by haploinsufficiency of Tbx1, a gene encoding a T-box transcription factor. Here we show that Tbx1 positively regulates monomethylation of histone 3 lysine 4 (H3K4me1) through interaction with and recruitment of histone methyltransferases. Treatment of cells with tranylcypromine (TCP), an inhibitor of histone demethylases, rebalances the loss of H3K4me1 and rescues the expression of approximately one-third of the genes dysregulated by Tbx1 suppression. In Tbx1 mouse mutants, TCP treatment ameliorates substantially the cardiovascular phenotype. These data suggest that epigenetic drugs may represent a potential therapeutic strategy for rescue of gene haploinsufficiency phenotypes, including structural defects. Deficit in transcription factor Tbx1 causes heart defects in humans and mice. Here the authors show that Tbx1 regulates gene expression by recruiting histone methyltransferases that affect chromatin marks, and that a drug inhibiting histone demethylation ameliorates the cardiovascular phenotype in Tbx1 haploinsufficient or hypomorphic mice.
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Affiliation(s)
- Filomena Gabriella Fulcoli
- CNR Institute of Genetics and Biophysics Adriano Buzzati Traverso, Via Pietro Castellino 111, Naples 80131, Italy
| | - Monica Franzese
- Istituto per le Applicazioni del Calcolo, CNR, Naples, Italy
| | - Xiangyang Liu
- Shanghai Pediatric Congenital Heart Institute, Institute for Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - Zhen Zhang
- Shanghai Pediatric Congenital Heart Institute, Institute for Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | | | - Antonio Baldini
- CNR Institute of Genetics and Biophysics Adriano Buzzati Traverso, Via Pietro Castellino 111, Naples 80131, Italy.,Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples 80131, Italy
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Abstract
22q11.2 deletion syndrome (22q11.2DS) is the most common chromosomal microdeletion disorder, estimated to result mainly from de novo non-homologous meiotic recombination events occurring in approximately 1 in every 1,000 fetuses. The first description in the English language of the constellation of findings now known to be due to this chromosomal difference was made in the 1960s in children with DiGeorge syndrome, who presented with the clinical triad of immunodeficiency, hypoparathyroidism and congenital heart disease. The syndrome is now known to have a heterogeneous presentation that includes multiple additional congenital anomalies and later-onset conditions, such as palatal, gastrointestinal and renal abnormalities, autoimmune disease, variable cognitive delays, behavioural phenotypes and psychiatric illness - all far extending the original description of DiGeorge syndrome. Management requires a multidisciplinary approach involving paediatrics, general medicine, surgery, psychiatry, psychology, interventional therapies (physical, occupational, speech, language and behavioural) and genetic counselling. Although common, lack of recognition of the condition and/or lack of familiarity with genetic testing methods, together with the wide variability of clinical presentation, delays diagnosis. Early diagnosis, preferably prenatally or neonatally, could improve outcomes, thus stressing the importance of universal screening. Equally important, 22q11.2DS has become a model for understanding rare and frequent congenital anomalies, medical conditions, psychiatric and developmental disorders, and may provide a platform to better understand these disorders while affording opportunities for translational strategies across the lifespan for both patients with 22q11.2DS and those with these associated features in the general population.
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Venkatesan C, Birch D, Peng CY, Kessler JA. Astrocytic β1-integrin affects cellular composition of murine blood brain barrier in the cerebral cortex. Int J Dev Neurosci 2015; 44:48-54. [PMID: 25997909 DOI: 10.1016/j.ijdevneu.2015.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 05/14/2015] [Accepted: 05/14/2015] [Indexed: 12/30/2022] Open
Abstract
The blood brain barrier (BBB) is composed of endothelial cells, astrocytes, and pericytes and maintains functional homeostasis by regulating transport of ions, fluid and cells between blood and neural tissue. The cellular and molecular pathways that contribute to the formation of the BBB in the developing brain have not been fully deciphered. β1-integrin (β1-itg) within endothelial cells is known to play a critical role in vasculogenesis. However, the role of astrocytic β1-itg in BBB development is not known. Our study used a mouse glial fibrillary acidic protein (GFAP)-cre transgenic line to selectively ablate β1-itg within astrocytes. We found that deletion of astrocytic β1-itg had a striking effect on the different cell types that form the BBB. Mutant mice had a decreased density of aquaporin-4 immunoreactivity within the perivascular astrocytic end-feet. We also found decreases in immunoreactivity for vimentin and CD-31 within endothelial cells. These changes were not accompanied by functional changes in BBB under physiological conditions as assessed by extravasation of large and small molecular weight molecules. However, mutant mice had an increased incidence of severe cystic injury in response to neonatal hypoxia. Our findings show that astrocytic β1-itg has an important role in defining cellular properties of the blood brain barrier in the cerebral cortex.
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Affiliation(s)
- Charu Venkatesan
- Department of Pediatrics, Division of Neurology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA.
| | - Derin Birch
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Chian-Yu Peng
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - John A Kessler
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
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Neuromolecular responses to social challenge: common mechanisms across mouse, stickleback fish, and honey bee. Proc Natl Acad Sci U S A 2014; 111:17929-34. [PMID: 25453090 DOI: 10.1073/pnas.1420369111] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Certain complex phenotypes appear repeatedly across diverse species due to processes of evolutionary conservation and convergence. In some contexts like developmental body patterning, there is increased appreciation that common molecular mechanisms underlie common phenotypes; these molecular mechanisms include highly conserved genes and networks that may be modified by lineage-specific mutations. However, the existence of deeply conserved mechanisms for social behaviors has not yet been demonstrated. We used a comparative genomics approach to determine whether shared neuromolecular mechanisms could underlie behavioral response to territory intrusion across species spanning a broad phylogenetic range: house mouse (Mus musculus), stickleback fish (Gasterosteus aculeatus), and honey bee (Apis mellifera). Territory intrusion modulated similar brain functional processes in each species, including those associated with hormone-mediated signal transduction and neurodevelopment. Changes in chromosome organization and energy metabolism appear to be core, conserved processes involved in the response to territory intrusion. We also found that several homologous transcription factors that are typically associated with neural development were modulated across all three species, suggesting that shared neuronal effects may involve transcriptional cascades of evolutionarily conserved genes. Furthermore, immunohistochemical analyses of a subset of these transcription factors in mouse again implicated modulation of energy metabolism in the behavioral response. These results provide support for conserved genetic "toolkits" that are used in independent evolutions of the response to social challenge in diverse taxa.
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Engelhardt B, Liebner S. Novel insights into the development and maintenance of the blood-brain barrier. Cell Tissue Res 2014; 355:687-99. [PMID: 24590145 PMCID: PMC3972432 DOI: 10.1007/s00441-014-1811-2] [Citation(s) in RCA: 211] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 01/13/2014] [Indexed: 01/20/2023]
Abstract
The blood-brain barrier (BBB) is essential for maintaining homeostasis within the central nervous system (CNS) and is a prerequisite for proper neuronal function. The BBB is localized to microvascular endothelial cells that strictly control the passage of metabolites into and out of the CNS. Complex and continuous tight junctions and lack of fenestrae combined with low pinocytotic activity make the BBB endothelium a tight barrier for water soluble moleucles. In combination with its expression of specific enzymes and transport molecules, the BBB endothelium is unique and distinguishable from all other endothelial cells in the body. During embryonic development, the CNS is vascularized by angiogenic sprouting from vascular networks originating outside of the CNS in a precise spatio-temporal manner. The particular barrier characteristics of BBB endothelial cells are induced during CNS angiogenesis by cross-talk with cellular and acellular elements within the developing CNS. In this review, we summarize the currently known cellular and molecular mechanisms mediating brain angiogenesis and introduce more recently discovered CNS-specific pathways (Wnt/β-catenin, Norrin/Frizzled4 and hedgehog) and molecules (GPR124) that are crucial in BBB differentiation and maturation. Finally, based on observations that BBB dysfunction is associated with many human diseases such as multiple sclerosis, stroke and brain tumors, we discuss recent insights into the molecular mechanisms involved in maintaining barrier characteristics in the mature BBB endothelium.
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Affiliation(s)
- Britta Engelhardt
- Theodor Kocher Institute, University of Bern, Freiestrasse 1, 3012 Bern, Switzerland
| | - Stefan Liebner
- Institute of Neurology (Edinger Institute), University Hospital Frankfurt, Heinrich-Hoffmann-Strasse 7, 60528 Frankfurt/Main, Germany
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