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Gabriel GC, Yagi H, Tan T, Bais AS, Glennon BJ, Stapleton MC, Huang L, Reynolds WT, Shaffer MG, Ganapathiraju M, Simon D, Panigrahy A, Wu YL, Lo CW. Mitotic Block and Epigenetic Repression Underlie Neurodevelopmental Defects and Neurobehavioral Deficits in Congenital Heart Disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.11.05.565716. [PMID: 38464057 PMCID: PMC10925221 DOI: 10.1101/2023.11.05.565716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Poor neurodevelopment is often observed with congenital heart disease (CHD), especially with mutations in chromatin modifiers. Here analysis of mice with hypoplastic left heart syndrome (HLHS) arising from mutations in Sin3A associated chromatin modifier Sap130 , and adhesion protein Pcdha9, revealed neurodevelopmental and neurobehavioral deficits reminiscent of those in HLHS patients. Microcephaly was associated with impaired cortical neurogenesis, mitotic block, and increased apoptosis. Transcriptional profiling indicated dysregulated neurogenesis by REST, altered CREB signaling regulating memory and synaptic plasticity, and impaired neurovascular coupling modulating cerebral blood flow. Many neurodevelopmental/neurobehavioral disease pathways were recovered, including autism and cognitive impairment. These same pathways emerged from genome-wide DNA methylation and Sap130 chromatin immunoprecipitation sequencing analyses, suggesting epigenetic perturbation. Mice with Pcdha9 mutation or forebrain-specific Sap130 deletion without CHD showed learning/memory deficits and autism-like behavior. These novel findings provide mechanistic insights indicating the adverse neurodevelopment in HLHS may involve cell autonomous/nonautonomous defects and epigenetic dysregulation and suggest new avenues for therapy.
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Karunakaran KB, Gabriel GC, Balakrishnan N, Lo CW, Ganapathiraju MK. Novel Protein-Protein Interactions Highlighting the Crosstalk between Hypoplastic Left Heart Syndrome, Ciliopathies and Neurodevelopmental Delays. Genes (Basel) 2022; 13:genes13040627. [PMID: 35456433 PMCID: PMC9032108 DOI: 10.3390/genes13040627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/08/2022] [Accepted: 03/08/2022] [Indexed: 02/06/2023] Open
Abstract
Hypoplastic left heart syndrome (HLHS) is a severe congenital heart disease (CHD) affecting 1 in 5000 newborns. We constructed the interactome of 74 HLHS-associated genes identified from a large-scale mouse mutagenesis screen, augmenting it with 408 novel protein-protein interactions (PPIs) using our High-Precision Protein-Protein Interaction Prediction (HiPPIP) model. The interactome is available on a webserver with advanced search capabilities. A total of 364 genes including 73 novel interactors were differentially regulated in tissue/iPSC-derived cardiomyocytes of HLHS patients. Novel PPIs facilitated the identification of TOR signaling and endoplasmic reticulum stress modules. We found that 60.5% of the interactome consisted of housekeeping genes that may harbor large-effect mutations and drive HLHS etiology but show limited transmission. Network proximity of diabetes, Alzheimer's disease, and liver carcinoma-associated genes to HLHS genes suggested a mechanistic basis for their comorbidity with HLHS. Interactome genes showed tissue-specificity for sites of extracardiac anomalies (placenta, liver and brain). The HLHS interactome shared significant overlaps with the interactomes of ciliopathy- and microcephaly-associated genes, with the shared genes enriched for genes involved in intellectual disability and/or developmental delay, and neuronal death pathways, respectively. This supported the increased burden of ciliopathy variants and prevalence of neurological abnormalities observed among HLHS patients with developmental delay and microcephaly, respectively.
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Affiliation(s)
- Kalyani B. Karunakaran
- Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560012, India; (K.B.K.); (N.B.)
| | - George C. Gabriel
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15201, USA; (G.C.G.); (C.W.L.)
| | - Narayanaswamy Balakrishnan
- Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560012, India; (K.B.K.); (N.B.)
| | - Cecilia W. Lo
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15201, USA; (G.C.G.); (C.W.L.)
| | - Madhavi K. Ganapathiraju
- Department of Biomedical Informatics, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15206, USA
- Intelligent Systems Program, School of Computing and Information, University of Pittsburgh, Pittsburgh, PA 15260, USA
- Correspondence:
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Dovjak GO, Zalewski T, Seidl-Mlczoch E, Ulm PA, Berger-Kulemann V, Weber M, Prayer D, Kasprian GJ, Ulm B. Abnormal Extracardiac Development in Fetuses With Congenital Heart Disease. J Am Coll Cardiol 2021; 78:2312-2322. [PMID: 34857093 DOI: 10.1016/j.jacc.2021.09.1358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/26/2021] [Accepted: 09/13/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Knowledge about extracardiac anomalies (ECA) in fetal congenital heart disease (CHD) can improve our understanding of the developmental origins of various outcomes in these infants. The prevalence and spectrum of ECA, including structural brain anomalies (SBA), on magnetic resonance imaging (MRI) in fetuses with different types of CHD and at different gestational ages, is unknown. OBJECTIVES The purpose of this study was to evaluate ECA rates and types on MRI in fetuses with different types of CHD and across gestation. METHODS A total of 429 consecutive fetuses with CHD and MRI between 17 and 38 gestational weeks were evaluated. ECA and SBA rates were assessed for each type of CHD and classified by gestational age (<25 or ≥25 weeks) at MRI. RESULTS Of all 429 fetuses with CHD, 243 (56.6%) had ECA on MRI, and 109 (25.4%) had SBA. Among the 191 fetuses with normal genetic testing results, the ECA rate was 54.5% and the SBA rate 19.4%. Besides SBA, extrafetal (21.2%) and urogenital anomalies (10.7%) were the most prevalent ECA on MRI in all types of CHD. Predominant SBA were anomalies of hindbrain-midbrain (11.0% of all CHD), dorsal prosencephalon (10.0%) development, and abnormal cerebrospinal fluid spaces (10.5%). There was no difference in the prevalence or pattern of ECA between early (<25 weeks; 45.7%) and late (≥25 weeks; 54.3%) fetal MRI. CONCLUSIONS ECA and SBA rates on fetal MRI are high across all types of CHD studied, and ECA as well as SBA are already present from midgestation onward.
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Affiliation(s)
- Gregor O Dovjak
- Department of Biomedical Imaging and Image-Guided Therapy, Division of Neuroradiology and Musculoskeletal Radiology, Medical University of Vienna, Vienna, Austria
| | - Tim Zalewski
- Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-maternal Medicine, Medical University of Vienna, Vienna, Austria
| | - Elisabeth Seidl-Mlczoch
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Cardiology, Medical University of Vienna, Vienna, Austria
| | - Patricia A Ulm
- Department of Chromosome Biology, University of Vienna, Vienna, Austria
| | - Vanessa Berger-Kulemann
- Department of Biomedical Imaging and Image-Guided Therapy, Division of Neuroradiology and Musculoskeletal Radiology, Medical University of Vienna, Vienna, Austria
| | - Michael Weber
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Daniela Prayer
- Department of Biomedical Imaging and Image-Guided Therapy, Division of Neuroradiology and Musculoskeletal Radiology, Medical University of Vienna, Vienna, Austria
| | - Gregor J Kasprian
- Department of Biomedical Imaging and Image-Guided Therapy, Division of Neuroradiology and Musculoskeletal Radiology, Medical University of Vienna, Vienna, Austria
| | - Barbara Ulm
- Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-maternal Medicine, Medical University of Vienna, Vienna, Austria.
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Abstract
Heterotaxy is a generalized term for patients who have an abnormality of laterality that cannot be described as situs inversus. Infants with heterotaxy can have significant anatomic and medical complexity and require personalized, specialized care, including comprehensive anatomic assessment. Common and rare anatomic findings are reviewed by system to help guide a thorough phenotypic evaluation. General care guidelines and considerations unique to this patient population are included. Future directions for this unique patient population, particularly in light of improved neonatal survival, are discussed.
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Affiliation(s)
- Gabrielle C Geddes
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA; Herma Heart Institute, Children's Hospital of Wisconsin, 9000 West Wisconsin Avenue, MS#716, Milwaukee, WI 53226, USA.
| | - Sai-Suma Samudrala
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Michael G Earing
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA; Herma Heart Institute, Children's Hospital of Wisconsin, 9000 West Wisconsin Avenue, MS#716, Milwaukee, WI 53226, USA; Section of Adult Cardiovascular Medicine, Department of Internal Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
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LaDisa JF, Tomita-Mitchell A, Stamm K, Bazan K, Mahnke DK, Goetsch MA, Wegter BJ, Gerringer JW, Repp K, Palygin O, Zietara AP, Krolikowski MM, Eddinger TJ, Alli AA, Mitchell ME. Human genotyping and an experimental model reveal NPR-C as a possible contributor to morbidity in coarctation of the aorta. Physiol Genomics 2019; 51:177-185. [PMID: 31002586 DOI: 10.1152/physiolgenomics.00049.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Coarctation of the aorta (CoA) is a common congenital cardiovascular (CV) defect characterized by a stenosis of the descending thoracic aorta. Treatment exists, but many patients develop hypertension (HTN). Identifying the cause of HTN is challenging because of patient variability (e.g., age, follow-up duration, severity) and concurrent CV abnormalities. Our objective was to conduct RNA sequencing of aortic tissue from humans with CoA to identify a candidate gene for mechanistic studies of arterial dysfunction in a rabbit model of CoA devoid of the variability seen with humans. We present the first known evidence of natriuretic peptide receptor C (NPR-C; aka NPR3) downregulation in human aortic sections subjected to high blood pressure (BP) from CoA versus normal BP regions (validated to PCR). These changes in NPR-C, a gene associated with BP and proliferation, were replicated in the rabbit model of CoA. Artery segments from this model were used with human aortic endothelial cells to reveal the functional relevance of altered NPR-C activity. Results showed decreased intracellular calcium ([Ca2+]i) activity to C-type natriuretic peptide (CNP). Normal relaxation induced by CNP and atrial natriuretic peptide was impaired for aortic segments exposed to elevated BP from CoA. Inhibition of NPR-C (M372049) also impaired aortic relaxation and [Ca2+]i activity. Genotyping of NPR-C variants predicted to be damaging revealed that rs146301345 was enriched in our CoA patients, but sample size limited association with HTN. These results may ultimately be used to tailor treatment for CoA based on mechanical stimuli, genotyping, and/or changes in arterial function.
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Affiliation(s)
- John F LaDisa
- Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Medicine, Division of Cardiovascular Medicine; Medical College of Wisconsin , Milwaukee, Wisconsin.,Department of Physiology; Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Aoy Tomita-Mitchell
- Department of Surgery, Division of Cardiothoracic Surgery, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Karl Stamm
- Department of Surgery, Division of Cardiothoracic Surgery, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Kathleen Bazan
- Department of Physiology; Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Donna K Mahnke
- Department of Surgery, Division of Cardiothoracic Surgery, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Mary A Goetsch
- Department of Surgery, Division of Cardiothoracic Surgery, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Brandon J Wegter
- Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Jesse W Gerringer
- Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Kathryn Repp
- Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Oleg Palygin
- Department of Physiology; Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Adrian P Zietara
- Department of Physiology; Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Mary M Krolikowski
- Department of Pediatrics; Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Thomas J Eddinger
- Department of Biological Sciences; Marquette University , Milwaukee, Wisconsin
| | - Abdel A Alli
- Department of Physiology and Functional Genomics and Division of Nephrology, Hypertension, and Renal Transplantation, Department of Medicine, University of Florida College of Medicine , Gainesville, Florida
| | - Michael E Mitchell
- Department of Surgery, Division of Cardiothoracic Surgery, Medical College of Wisconsin , Milwaukee, Wisconsin.,Children's Hospital of Wisconsin , Milwaukee, Wisconsin
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Abstract
PURPOSE OF REVIEW The aim of this study is to review genetics of congenital heart disease (CHD) with a focus on clinical applications, genetic testing and clinical challenges. RECENT FINDINGS With improved clinical care, there is a rapidly expanding population of adults, especially women, with CHD who have not undergone contemporary genetic assessment and do not understand their risk for having a child with CHD. Many patients have never undergone assessment or had genetic testing. A major barrier is medical geneticist availability, resulting in this burden of care shifting to providers outside of genetics. Even with current understanding, the cause for the majority of cases of CHD is still not known. There are significant gaps in knowledge in the realms of more complex causes such as noncoding variants, multigenic contribution and small structural chromosomal anomalies. SUMMARY Standard assessment of patients with CHD, including adult survivors, is indicated. The best first-line genetic assessment for most patients with CHD is a chromosomal microarray, and this will soon evolve to be genomic sequencing with copy number variant analysis. Due to lack of medical geneticists, creative solutions to maximize the number of patients with CHD who undergo assessment with standard protocols and plans for support with result interpretation need to be explored.
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Rosengren T, Larsen LJ, Pedersen LB, Christensen ST, Møller LB. TSC1 and TSC2 regulate cilia length and canonical Hedgehog signaling via different mechanisms. Cell Mol Life Sci 2018; 75:2663-2680. [PMID: 29396625 PMCID: PMC6003990 DOI: 10.1007/s00018-018-2761-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 01/03/2018] [Accepted: 01/24/2018] [Indexed: 01/22/2023]
Abstract
Primary cilia are sensory organelles that coordinate multiple cellular signaling pathways, including Hedgehog (HH), Wingless/Int (WNT) and Transforming Growth Factor-β (TGF-β) signaling. Similarly, primary cilia have been implicated in regulation of mTOR signaling, in which Tuberous Sclerosis Complex proteins 1 and 2 (TSC1/2) negatively regulate protein synthesis by inactivating the mTOR complex 1 (mTORC1) at energy limiting states. Here we report that TSC1 and TSC2 regulate Smoothened (SMO)-dependent HH signaling in mouse embryonic fibroblasts (MEFs). Reduced SMO-dependent expression of Gli1 was demonstrated in both Tsc1-/- and Tsc2-/- cells, and we found that Tsc1 is required for TGF-β induced phosphorylation of SMAD2/3 and subsequent expression of the HH signaling effector and transcription factor GLI2. Hedgehog signaling was restored in Tsc1-/- cells after exogenous expression of Gli2, whereas rapamycin restored HH signaling in Tsc2-/- cells. Furthermore, we observed that Tsc1-/- MEFs display significantly elongated cilia, whereas cilia in Tsc2-/- MEFs were shorter than normal. The elongated cilium phenotype of Tsc1-/- MEFs is likely due to increased mTORC1-dependent autophagic flux observed in these cells, as both the autophagic flux and the cilia length phenotype was restored by rapamycin. In addition, ciliary length control in Tsc1-/- MEFs was also influenced by reduced expression of Gli2, which compromised expression of Wnt5a that normally promotes cilia disassembly. In summary, our results support distinct functions of Tsc1 and Tsc2 in cellular signaling as the two genes affect ciliary length control and HH signaling via different mechanisms.
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Affiliation(s)
- Thomas Rosengren
- Applied Human Molecular Genetics, Clinical Genetic Clinic, Kennedy Center, Copenhagen University Hospital, Rigshospitalet, Gl. Landevej 7, 2600, Glostrup, Denmark
| | - Lasse Jonsgaard Larsen
- Applied Human Molecular Genetics, Clinical Genetic Clinic, Kennedy Center, Copenhagen University Hospital, Rigshospitalet, Gl. Landevej 7, 2600, Glostrup, Denmark
| | - Lotte Bang Pedersen
- Department of Biology, The August Krogh Building, University of Copenhagen, Universitetsparken 13, 2100, Copenhagen, Denmark
| | - Søren Tvorup Christensen
- Department of Biology, The August Krogh Building, University of Copenhagen, Universitetsparken 13, 2100, Copenhagen, Denmark
| | - Lisbeth Birk Møller
- Applied Human Molecular Genetics, Clinical Genetic Clinic, Kennedy Center, Copenhagen University Hospital, Rigshospitalet, Gl. Landevej 7, 2600, Glostrup, Denmark.
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