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Luo H, Lao L, Au KS, Northrup H, He X, Forget D, Gauthier MS, Coulombe B, Bourdeau I, Shi W, Gagliardi L, Fragoso MCBV, Peng J, Wu J. ARMC5 controls the degradation of most Pol II subunits, and ARMC5 mutation increases neural tube defect risks in mice and humans. Genome Biol 2024; 25:19. [PMID: 38225631 PMCID: PMC10789052 DOI: 10.1186/s13059-023-03147-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: 04/19/2023] [Accepted: 12/18/2023] [Indexed: 01/17/2024] Open
Abstract
BACKGROUND Neural tube defects (NTDs) are caused by genetic and environmental factors. ARMC5 is part of a novel ubiquitin ligase specific for POLR2A, the largest subunit of RNA polymerase II (Pol II). RESULTS We find that ARMC5 knockout mice have increased incidence of NTDs, such as spina bifida and exencephaly. Surprisingly, the absence of ARMC5 causes the accumulation of not only POLR2A but also most of the other 11 Pol II subunits, indicating that the degradation of the whole Pol II complex is compromised. The enlarged Pol II pool does not lead to generalized Pol II stalling or a generalized decrease in mRNA transcription. In neural progenitor cells, ARMC5 knockout only dysregulates 106 genes, some of which are known to be involved in neural tube development. FOLH1, critical in folate uptake and hence neural tube development, is downregulated in the knockout intestine. We also identify nine deleterious mutations in the ARMC5 gene in 511 patients with myelomeningocele, a severe form of spina bifida. These mutations impair the interaction between ARMC5 and Pol II and reduce Pol II ubiquitination. CONCLUSIONS Mutations in ARMC5 increase the risk of NTDs in mice and humans. ARMC5 is part of an E3 controlling the degradation of all 12 subunits of Pol II under physiological conditions. The Pol II pool size might have effects on NTD pathogenesis, and some of the effects might be via the downregulation of FOLH1. Additional mechanistic work is needed to establish the causal effect of the findings on NTD pathogenesis.
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Affiliation(s)
- Hongyu Luo
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada.
| | - Linjiang Lao
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
| | - Kit Sing Au
- Department of Pediatrics, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth) and Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Hope Northrup
- Department of Pediatrics, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth) and Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Xiao He
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
| | - Diane Forget
- Department of Translational Proteomics, Institut de Recherches Cliniques de Montréal, Montreal, QC, Canada
| | - Marie-Soleil Gauthier
- Department of Translational Proteomics, Institut de Recherches Cliniques de Montréal, Montreal, QC, Canada
| | - Benoit Coulombe
- Department of Translational Proteomics, Institut de Recherches Cliniques de Montréal, Montreal, QC, Canada
- Department of Biochemistry and Molecular Medicine, Université de Montréal, Montreal, QC, Canada
| | - Isabelle Bourdeau
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
- Division of Endocrinology, CHUM, Montreal, QC, Canada
- Department of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Wei Shi
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
| | - Lucia Gagliardi
- Adelaide Medical School, University of Adelaide, Adelaide, Australia
- Endocrine and Metabolic Unit, Royal Adelaide Hospital, Adelaide, Australia
- Department of Genetics and Molecular Pathology, SA Pathology, Adelaide, Australia
- Endocrine and Diabetes Unit, Queen Elizabeth Hospital, Adelaide, Australia
| | - Maria Candida Barisson Villares Fragoso
- Unidade de Suprarrenal Disciplina de Endocrinologia E Metabologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Junzheng Peng
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada
| | - Jiangping Wu
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal (CHUM), Montreal, QC, Canada.
- Department of Medicine, Université de Montréal, Montreal, QC, Canada.
- Division of Nephrology, CHUM, Montreal, QC, Canada.
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2
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Rai S, Leydier L, Sharma S, Katwala J, Sahu A. A quest for genetic causes underlying signaling pathways associated with neural tube defects. Front Pediatr 2023; 11:1126209. [PMID: 37284286 PMCID: PMC10241075 DOI: 10.3389/fped.2023.1126209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/28/2023] [Indexed: 06/08/2023] Open
Abstract
Neural tube defects (NTDs) are serious congenital deformities of the nervous system that occur owing to the failure of normal neural tube closures. Genetic and non-genetic factors contribute to the etiology of neural tube defects in humans, indicating the role of gene-gene and gene-environment interaction in the occurrence and recurrence risk of neural tube defects. Several lines of genetic studies on humans and animals demonstrated the role of aberrant genes in the developmental risk of neural tube defects and also provided an understanding of the cellular and morphological programs that occur during embryonic development. Other studies observed the effects of folate and supplementation of folic acid on neural tube defects. Hence, here we review what is known to date regarding altered genes associated with specific signaling pathways resulting in NTDs, as well as highlight the role of various genetic, and non-genetic factors and their interactions that contribute to NTDs. Additionally, we also shine a light on the role of folate and cell adhesion molecules (CAMs) in neural tube defects.
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Affiliation(s)
- Sunil Rai
- Department of Molecular Biology, Medical University of the Americas, Charlestown, Saint Kitts and Nevis
| | - Larissa Leydier
- Department of Molecular Biology, Medical University of the Americas, Charlestown, Saint Kitts and Nevis
| | - Shivani Sharma
- Department of Molecular Biology, Medical University of the Americas, Charlestown, Saint Kitts and Nevis
| | - Jigar Katwala
- Department of Molecular Biology, Medical University of the Americas, Charlestown, Saint Kitts and Nevis
| | - Anurag Sahu
- Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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3
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Mitra T, Gulati R, Uppal A, Kumari SR, Tripathy S, Ranjan P, Janardhanan R. Prospecting of exosomal-miRNA signatures as prognostic marker for gestational diabetes mellitus and other adverse pregnancy outcomes. Front Endocrinol (Lausanne) 2023; 14:1097337. [PMID: 36843574 PMCID: PMC9946972 DOI: 10.3389/fendo.2023.1097337] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 01/23/2023] [Indexed: 02/11/2023] Open
Abstract
Exosomal microRNA (ExomiRs) serves as potential cargo molecules responsible for post-translation of gene expression and intracellular communication playing a vital role in acting as clinically relevant prognostic biomarkers for identifying pregnancy-associated complications in patients. ExomiRs are associated with Gestational Diabetes Mellitus (GDM) as potential targets for understanding the pathophysiology of beta-cell dysfunction. ExomiRs (ExomiR 122, ExomiR 16-5p, ExomiR 215-5p, ExomiR 450b-3p, ExomiR 122-5p) aid to act as biomarkers and regulate the progression of diabetes and its related complication. These ExomiRshave been reported to interfere with the regulation of various genes such as ZEB2, IRS1, IRS2, GLUT1, GLUT4, etc. and inhibition of several pathways like PI3K/AKT, Wnt, and mTOR signaling pathways leading to the modulation in the development of GDM affecting the clinical and pathological features of women. These ExomiRs have also been associated with other pregnancy-associated complications, including preeclampsia, hypothyroidism, pregnancy loss, and ectopic pregnancies. On the other hand, overexpression of certain ExomiRs such as Exomir-515-5p, ExomiR-221, and ExomiR-96 serve a regulatory role in overcoming insulin resistance. Taken together, the current review focuses on the prospective capabilities of ExomiRs for diagnosis and clinical prognosis of GDM women with respect to pregnancy outcomes.
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Affiliation(s)
- Tridip Mitra
- Department of Medical Research, Faculty of Medicine and Health Sciences, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | - Richa Gulati
- Department of Medical Research, Faculty of Medicine and Health Sciences, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | | | - Sajeetha R Kumari
- Department of Obstetrics and Gynaecology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | | | - Priya Ranjan
- Department of Electrical Engineering, Biju Patnaik University of Technology, Rourkela, Odisha, India
| | - Rajiv Janardhanan
- Department of Medical Research, Faculty of Medicine and Health Sciences, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
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4
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Gajagowni S, Nair P, Bapat AC, Vachharajani AJ. Diabetic Embryopathies. Neoreviews 2022; 23:e677-e688. [PMID: 36180736 DOI: 10.1542/neo.23-10-e677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Diabetic embryopathy is defined as congenital anomalies that are linked to maternal diabetes. The association between diabetes and fetal, neonatal, and long-term complications is well-established. These complications include organ or structural maldevelopment, fetal growth abnormalities, and learning/psychiatric comorbidities. Recent studies have elucidated the pathophysiology behind these conditions and outlined new management approaches. Caudal regression syndrome, also known as sacral agenesis, is a well-known but less described complication of maternal diabetes. The purpose of this review is to summarize existing research on common neonatal morbidities in infants of mothers with diabetes with a focus on caudal regression syndrome and its long-term associations.
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Affiliation(s)
| | - Pooja Nair
- University of Missouri School of Medicine, Columbia, MO
| | - Alka C Bapat
- Department of Obstetrics and Gynecology, Icahn School of Medicine at Mount Sinai, Queens Hospital Center, New York, NY
| | - Akshaya J Vachharajani
- Division of Neonatology, Department of Child Health, University of Missouri School of Medicine, Columbia, MO
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5
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Engelhardt DM, Martyr CA, Niswander L. Pathogenesis of neural tube defects: The regulation and disruption of cellular processes underlying neural tube closure. WIREs Mech Dis 2022; 14:e1559. [PMID: 35504597 PMCID: PMC9605354 DOI: 10.1002/wsbm.1559] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 11/08/2022]
Abstract
Neural tube closure (NTC) is crucial for proper development of the brain and spinal cord and requires precise morphogenesis from a sheet of cells to an intact three-dimensional structure. NTC is dependent on successful regulation of hundreds of genes, a myriad of signaling pathways, concentration gradients, and is influenced by epigenetic and environmental cues. Failure of NTC is termed a neural tube defect (NTD) and is a leading class of congenital defects in the United States and worldwide. Though NTDs are all defined as incomplete closure of the neural tube, the pathogenesis of an NTD determines the type, severity, positioning, and accompanying phenotypes. In this review, we survey pathogenesis of NTDs relating to disruption of cellular processes arising from genetic mutations, altered epigenetic regulation, and environmental influences by micronutrients and maternal condition. This article is categorized under: Congenital Diseases > Genetics/Genomics/Epigenetics Neurological Diseases > Genetics/Genomics/Epigenetics Neurological Diseases > Stem Cells and Development.
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Affiliation(s)
- David M Engelhardt
- Molecular Cellular Developmental Biology, University of Colorado, Boulder, Colorado, USA
| | - Cara A Martyr
- Molecular Cellular Developmental Biology, University of Colorado, Boulder, Colorado, USA
| | - Lee Niswander
- Molecular Cellular Developmental Biology, University of Colorado, Boulder, Colorado, USA
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6
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Karthik KV, Rajalingam A, Shivashankar M, Ganjiwale A. Recursive Feature Elimination-based Biomarker Identification for Open Neural Tube Defects. Curr Genomics 2022; 23:195-206. [PMID: 36777008 PMCID: PMC9878829 DOI: 10.2174/1389202923666220511162038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/20/2022] [Accepted: 03/25/2022] [Indexed: 11/22/2022] Open
Abstract
Background: Open spina bifida (myelomeningocele) is the result of the failure of spinal cord closing completely and is the second most common and severe birth defect. Open neural tube defects are multifactorial, and the exact molecular mechanism of the pathogenesis is not clear due to disease complexity for which prenatal treatment options remain limited worldwide. Artificial intelligence techniques like machine learning tools have been increasingly used in precision diagnosis. Objective: The primary objective of this study is to identify key genes for open neural tube defects using a machine learning approach that provides additional information about myelomeningocele in order to obtain a more accurate diagnosis. Materials and Methods: Our study reports differential gene expression analysis from multiple datasets (GSE4182 and GSE101141) of amniotic fluid samples with open neural tube defects. The sample outliers in the datasets were detected using principal component analysis (PCA). We report a combination of the differential gene expression analysis with recursive feature elimination (RFE), a machine learning approach to get 4 key genes for open neural tube defects. The features selected were validated using five binary classifiers for diseased and healthy samples: Logistic Regression (LR), Decision tree classifier (DT), Support Vector Machine (SVM), Random Forest classifier (RF), and K-nearest neighbour (KNN) with 5-fold cross-validation. Results: Growth Associated Protein 43 (GAP43), Glial fibrillary acidic protein (GFAP), Repetin (RPTN), and CD44 are the important genes identified in the study. These genes are known to be involved in axon growth, astrocyte differentiation in the central nervous system, post-traumatic brain repair, neuroinflammation, and inflammation-linked neuronal injuries. These key genes represent a promising tool for further studies in the diagnosis and early detection of open neural tube defects. Conclusion: These key biomarkers help in the diagnosis and early detection of open neural tube defects, thus evaluating the progress and seriousness in diseases condition. This study strengthens previous literature sources of confirming these biomarkers linked with open NTD's. Thus, among other prenatal treatment options present until now, these biomarkers help in the early detection of open neural tube defects, which provides success in both treatment and prevention of these defects in the advanced stage.
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Affiliation(s)
| | - Aruna Rajalingam
- Department of Life Science, Bangalore University, Bangalore, India
| | | | - Anjali Ganjiwale
- Department of Life Science, Bangalore University, Bangalore, India
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7
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Cao S, Wu Y, Albert Reece E, Xu C, Shen WB, Kaushal S, Yang P. Functional cargos of exosomes derived from Flk-1 + vascular progenitors enable neurulation and ameliorate embryonic anomalies in diabetic pregnancy. Commun Biol 2022; 5:648. [PMID: 35778435 PMCID: PMC9249756 DOI: 10.1038/s42003-022-03614-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 06/21/2022] [Indexed: 11/27/2022] Open
Abstract
Various types of progenitors initiate individual organ formation and their crosstalk orchestrates morphogenesis for the entire embryo. Here we show that progenitor exosomal communication across embryonic organs occurs in normal development and is altered in embryos of diabetic pregnancy. Endoderm fibroblast growth factor 2 (FGF2) stimulates mesoderm Flk-1+ vascular progenitors to produce exosomes containing the anti-stress protein Survivin. These exosomes act on neural stem cells of the neuroepithelium to facilitate neurulation by inhibiting cellular stress and apoptosis. Maternal diabetes causes Flk-1+ progenitor dysfunction by suppressing FGF2 through DNA hypermethylation. Restoring endoderm FGF2 prevents diabetes-induced survivin reduction in Flk-1+ progenitor exosomes. Transgenic Survivin expression in Flk-1+ progenitors or in utero delivery of survivin-enriched exosomes restores cellular homeostasis and prevents diabetes-induced neural tube defects (NTDs), whereas inhibiting exosome production induces NTDs. Thus, functional inter-organ communication via Flk-1 exosomes is vital for neurulation and its disruption leads to embryonic anomalies.
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Affiliation(s)
- Songying Cao
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Yanqing Wu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
- Institute of Life Sciences, Wenzhou University, Zhejiang Province, 325035, Wenzhou, China
| | - E Albert Reece
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Biochemistry & Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Cheng Xu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Wei-Bin Shen
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sunjay Kaushal
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
- Division of Cardiovascular-Thoracic Surgery, Ann & Robert H. Lurie Children's Hospital of Chicago, 225 E. Chicago Avenue, Chicago, IL, 60611, USA
| | - Peixin Yang
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA.
- Department of Biochemistry & Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA.
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8
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Kokhanov A. Congenital Abnormalities in the Infant of a Diabetic Mother. Neoreviews 2022; 23:e319-e327. [PMID: 35490182 DOI: 10.1542/neo.23-5-e319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Diabetes mellitus is among the most common chronic diseases worldwide. Infants of diabetic mothers are at increased risk of having congenital abnormalities. Tremendous progress has been achieved in the pregnancy care of diabetic women; however, the risk of birth defects associated with maternal diabetes still exists. These anomalies might arise in many organs and systems of the developing fetus. Many mechanisms have been implicated in the teratogenicity of maternal diabetes and it is critical to achieve good glycemic control before conception in women with diabetes. Neonatal clinicians must be able to identify patients at risk and recognize the signs of diabetic embryopathy. This article presents a review of congenital anomalies associated with maternal diabetes.
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Affiliation(s)
- Artemiy Kokhanov
- Department of Neonatology, Memorial Care Miller Children's and Women's Hospital Long Beach, Long Beach, CA
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9
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Genomics and Epigenomics of Gestational Diabetes Mellitus: Understanding the Molecular Pathways of the Disease Pathogenesis. Int J Mol Sci 2022; 23:ijms23073514. [PMID: 35408874 PMCID: PMC8998752 DOI: 10.3390/ijms23073514] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/01/2022] [Accepted: 03/04/2022] [Indexed: 11/16/2022] Open
Abstract
One of the most common complications during pregnancy is gestational diabetes mellitus (GDM), hyperglycemia that occurs for the first time during pregnancy. The condition is multifactorial, caused by an interaction between genetic, epigenetic, and environmental factors. However, the underlying mechanisms responsible for its pathogenesis remain elusive. Moreover, in contrast to several common metabolic disorders, molecular research in GDM is lagging. It is important to recognize that GDM is still commonly diagnosed during the second trimester of pregnancy using the oral glucose tolerance test (OGGT), at a time when both a fetal and maternal pathophysiology is already present, demonstrating the increased blood glucose levels associated with exacerbated insulin resistance. Therefore, early detection of metabolic changes and associated epigenetic and genetic factors that can lead to an improved prediction of adverse pregnancy outcomes and future cardio-metabolic pathologies in GDM women and their children is imperative. Several genomic and epigenetic approaches have been used to identify the genes, genetic variants, metabolic pathways, and epigenetic modifications involved in GDM to determine its etiology. In this article, we explore these factors as well as how their functional effects may contribute to immediate and future pathologies in women with GDM and their offspring from birth to adulthood. We also discuss how these approaches contribute to the changes in different molecular pathways that contribute to the GDM pathogenesis, with a special focus on the development of insulin resistance.
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10
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Fame RM, Lehtinen MK. Mitochondria in Early Forebrain Development: From Neurulation to Mid-Corticogenesis. Front Cell Dev Biol 2021; 9:780207. [PMID: 34888312 PMCID: PMC8650308 DOI: 10.3389/fcell.2021.780207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/10/2021] [Indexed: 01/07/2023] Open
Abstract
Function of the mature central nervous system (CNS) requires a substantial proportion of the body’s energy consumption. During development, the CNS anlage must maintain its structure and perform stage-specific functions as it proceeds through discrete developmental stages. While key extrinsic signals and internal transcriptional controls over these processes are well appreciated, metabolic and mitochondrial states are also critical to appropriate forebrain development. Specifically, metabolic state, mitochondrial function, and mitochondrial dynamics/localization play critical roles in neurulation and CNS progenitor specification, progenitor proliferation and survival, neurogenesis, neural migration, and neurite outgrowth and synaptogenesis. With the goal of integrating neurodevelopmental biologists and mitochondrial specialists, this review synthesizes data from disparate models and processes to compile and highlight key roles of mitochondria in the early development of the CNS with specific focus on forebrain development and corticogenesis.
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Affiliation(s)
- Ryann M Fame
- Department of Pathology, Boston Children's Hospital, Boston, MA, United States
| | - Maria K Lehtinen
- Department of Pathology, Boston Children's Hospital, Boston, MA, United States
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11
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Kopylov AT, Papysheva O, Gribova I, Kaysheva AL, Kotaysch G, Kharitonova L, Mayatskaya T, Nurbekov MK, Schipkova E, Terekhina O, Morozov SG. Severe types of fetopathy are associated with changes in the serological proteome of diabetic mothers. Medicine (Baltimore) 2021; 100:e27829. [PMID: 34766598 PMCID: PMC8589259 DOI: 10.1097/md.0000000000027829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/27/2021] [Accepted: 10/29/2021] [Indexed: 11/27/2022] Open
Abstract
ABSTRACT Pregestational or gestational diabetes are the main risk factors for diabetic fetopathy. There are no generalized signs of fetopathy before the late gestational age due to insufficient sensitivity of currently employed instrumental methods. In this cross-sectional observational study, we investigated several types of severe diabetic fetopathy (cardiomyopathy, central nervous system defects, and hepatomegaly) established in type 2 diabetic mothers during 30 to 35 gestational weeks and confirmed upon delivery. We examined peripheral blood plasma and determined a small proportion of proteins strongly associated with a specific type of fetopathy or anatomical malfunction. Most of the examined markers participate in critical processes at different stages of embryogenesis and regulate various phases of morphogenesis. Alterations in CDCL5 had a significant impact on mRNA splicing and DNA repair. Patients with central nervous system defects were characterized by the greatest depletion (ca. 7% of the basal level) of DFP3, a neurotrophic factor needed for the proper specialization of oligodendrocytes. Dysregulation of noncanonical wingless-related integration site signaling pathway (Wnt) signaling guided by pigment epithelium-derived factor (PEDF) and disheveled-associated activator of morphogenesis 2 (DAAM2) was also profound. In addition, deficiency in retinoic acid and thyroxine transport was exhibited by the dramatic increase of transthyretin (TTHY). The molecular interplay between the identified serological markers leads to pathologies in fetal development on the background of a diabetic condition. These warning serological markers can be quantitatively examined, and their profile may reflect different severe types of diabetic fetopathy, producing a beneficial effect on the current standard care for pregnant women and infants.
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Affiliation(s)
- Arthur T. Kopylov
- Institute of Biomedical Chemistry, 10 Pogodinskaya str., Moscow, Russia
| | - Olga Papysheva
- S.S. Yudin 7th State Clinical Hospital, 4 Kolomenskaya str., Moscow, Russia
| | - Iveta Gribova
- N.E. Bauman 29th State Clinical Hospital, 2 Hospitalnaya sq., Moscow, Russia
| | - Anna L. Kaysheva
- Institute of Biomedical Chemistry, 10 Pogodinskaya str., Moscow, Russia
| | - Galina Kotaysch
- N.E. Bauman 29th State Clinical Hospital, 2 Hospitalnaya sq., Moscow, Russia
| | - Lubov Kharitonova
- N.I. Pirogov Medical University, 1 Ostrovityanova st., Moscow, Russia
| | | | - Malik K. Nurbekov
- Institute of General Pathology and Pathophysiology, 8 Baltyiskaya str., Moscow, Russia
| | - Ekaterina Schipkova
- Institute of General Pathology and Pathophysiology, 8 Baltyiskaya str., Moscow, Russia
| | - Olga Terekhina
- Institute of General Pathology and Pathophysiology, 8 Baltyiskaya str., Moscow, Russia
| | - Sergey G. Morozov
- N.E. Bauman 29th State Clinical Hospital, 2 Hospitalnaya sq., Moscow, Russia
- Institute of General Pathology and Pathophysiology, 8 Baltyiskaya str., Moscow, Russia
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12
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Epigenetic Changes in Gestational Diabetes Mellitus. Int J Mol Sci 2021; 22:ijms22147649. [PMID: 34299269 PMCID: PMC8303885 DOI: 10.3390/ijms22147649] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/30/2021] [Accepted: 07/14/2021] [Indexed: 12/30/2022] Open
Abstract
Gestational diabetes mellitus (GDM) is defined as carbohydrate intolerance that appears or is for the first time diagnosed during pregnancy. It can lead to many complications in the mother and in the offspring, so diagnostics and management of GDM are important to avoid adverse pregnancy outcomes. Epigenetic studies revealed the different methylation status of genes in pregnancies with GDM compared to pregnancies without GDM. A growing body of evidence shows that the GDM can affect not only the course of the pregnancy, but also the development of the offspring, thus contributing to long-term effects and adverse health outcomes of the progeny. Epigenetic changes occur through histone modification, DNA methylation, and disrupted function of non-coding ribonucleic acid (ncRNA) including microRNAs (miRNAs). In this review, we focus on the recent knowledge about epigenetic changes in GDM. The analysis of this topic may help us to understand pathophysiological mechanisms in GDM and find a solution to prevent their consequences.
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13
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Xu C, Shen WB, Reece EA, Hasuwa H, Harman C, Kaushal S, Yang P. Maternal diabetes induces senescence and neural tube defects sensitive to the senomorphic rapamycin. SCIENCE ADVANCES 2021; 7:7/27/eabf5089. [PMID: 34193422 PMCID: PMC8245044 DOI: 10.1126/sciadv.abf5089] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 05/18/2021] [Indexed: 05/03/2023]
Abstract
Neural tube defects (NTDs) are the second most common structural birth defect. Senescence, a state of permanent cell cycle arrest, occurs only after neural tube closure. Maternal diabetes-induced NTDs are severe diabetic complications that lead to infant mortality or lifelong morbidity and may be linked to premature senescence. Here, we report that premature senescence occurs in the mouse neuroepithelium and disrupts neurulation, leading to NTDs in diabetic pregnancy. Premature senescence and NTDs were abolished by knockout of the transcription factor Foxo3a, the miR-200c gene, and the cell cycle inhibitors p21 and p27; transgenic expression of the dominant-negative FoxO3a mutant; or the senomorphic rapamycin. Double transgenic expression of p21 and p27 mimicked maternal diabetes in inducing premature neuroepithelium senescence and NTDs. These findings integrate transcription- and epigenome-regulated miRNAs and cell cycle regulators in premature neuroepithelium senescence and provide a mechanistic basis for targeting premature senescence and NTDs using senomorphics.
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Affiliation(s)
- Cheng Xu
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Wei-Bin Shen
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - E Albert Reece
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Hidetoshi Hasuwa
- Department of Molecular Biology, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo 160-8582, Japan
| | - Christopher Harman
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sunjay Kaushal
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Peixin Yang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD, USA.
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA
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14
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Fitriasari S, Trainor PA. Diabetes, Oxidative Stress, and DNA Damage Modulate Cranial Neural Crest Cell Development and the Phenotype Variability of Craniofacial Disorders. Front Cell Dev Biol 2021; 9:644410. [PMID: 34095113 PMCID: PMC8174788 DOI: 10.3389/fcell.2021.644410] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 04/21/2021] [Indexed: 12/11/2022] Open
Abstract
Craniofacial malformations are among the most common birth defects in humans and they often have significant detrimental functional, aesthetic, and social consequences. To date, more than 700 distinct craniofacial disorders have been described. However, the genetic, environmental, and developmental origins of most of these conditions remain to be determined. This gap in our knowledge is hampered in part by the tremendous phenotypic diversity evident in craniofacial syndromes but is also due to our limited understanding of the signals and mechanisms governing normal craniofacial development and variation. The principles of Mendelian inheritance have uncovered the etiology of relatively few complex craniofacial traits and consequently, the variability of craniofacial syndromes and phenotypes both within families and between families is often attributed to variable gene expression and incomplete penetrance. However, it is becoming increasingly apparent that phenotypic variation is often the result of combinatorial genetic and non-genetic factors. Major non-genetic factors include environmental effectors such as pregestational maternal diabetes, which is well-known to increase the risk of craniofacial birth defects. The hyperglycemia characteristic of diabetes causes oxidative stress which in turn can result in genotoxic stress, DNA damage, metabolic alterations, and subsequently perturbed embryogenesis. In this review we explore the importance of gene-environment associations involving diabetes, oxidative stress, and DNA damage during cranial neural crest cell development, which may underpin the phenotypic variability observed in specific craniofacial syndromes.
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Affiliation(s)
| | - Paul A Trainor
- Stowers Institute for Medical Research, Kansas City, MO, United States.,Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS, United States
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15
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Mor ME, Harvey A, Familari M, St Clair-Glover M, Viventi S, de Iongh RU, Cameron FJ, Dottori M. Neural differentiation medium for human pluripotent stem cells to model physiological glucose levels in human brain. Brain Res Bull 2021; 173:141-149. [PMID: 34022288 DOI: 10.1016/j.brainresbull.2021.05.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 05/05/2021] [Accepted: 05/17/2021] [Indexed: 12/30/2022]
Abstract
Cortical neurospheres (NSPs) derived from human pluripotent stem cells (hPSC), have proven to be a successful platform to investigate human brain development and neuro-related diseases. Currently, many of the standard hPSC neural differentiation media, use concentrations of glucose (approximately 17.5-25 mM) and insulin (approximately 3.2 μM) that are much greater than the physiological concentrations found in the human brain. These culture conditions make it difficult to analyse perturbations of glucose or insulin on neuronal development and differentiation. We established a new hPSC neural differentiation medium that incorporated physiological brain concentrations of glucose (2.5 mM) and significantly reduced insulin levels (0.86 μM). This medium supported hPSC neural induction and formation of cortical NSPs. The revised hPSC neural differentiation medium, may provide an improved platform to model brain development and to investigate neural differentiation signalling pathways impacted by abnormal glucose and insulin levels.
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Affiliation(s)
- Michal E Mor
- Department of Anatomy & Physiology, University of Melbourne, Australia
| | | | - Mary Familari
- School of BioSciences, University of Melbourne, Australia
| | - Mitchell St Clair-Glover
- Illawarra Health and Medical Research Institute, Molecular Horizons, University of Wollongong, Australia
| | - Serena Viventi
- The Florey Institute of Neuroscience and Mental Health, Australia
| | - Robb U de Iongh
- Department of Anatomy & Physiology, University of Melbourne, Australia
| | - Fergus J Cameron
- Murdoch Children's Research Institute, The Royal Children's Hospital, Australia; Department of Medicine (Royal Melbourne Hospital), University of Melbourne, Australia
| | - Mirella Dottori
- Department of Anatomy & Physiology, University of Melbourne, Australia; Illawarra Health and Medical Research Institute, Molecular Horizons, University of Wollongong, Australia; Department of Biomedical Engineering, University of Melbourne, Australia.
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16
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Au KS, Hebert L, Hillman P, Baker C, Brown MR, Kim DK, Soldano K, Garrett M, Ashley-Koch A, Lee S, Gleeson J, Hixson JE, Morrison AC, Northrup H. Human myelomeningocele risk and ultra-rare deleterious variants in genes associated with cilium, WNT-signaling, ECM, cytoskeleton and cell migration. Sci Rep 2021; 11:3639. [PMID: 33574475 PMCID: PMC7878900 DOI: 10.1038/s41598-021-83058-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/28/2021] [Indexed: 01/08/2023] Open
Abstract
Myelomeningocele (MMC) affects one in 1000 newborns annually worldwide and each surviving child faces tremendous lifetime medical and caregiving burdens. Both genetic and environmental factors contribute to disease risk but the mechanism is unclear. This study examined 506 MMC subjects for ultra-rare deleterious variants (URDVs, absent in gnomAD v2.1.1 controls that have Combined Annotation Dependent Depletion score ≥ 20) in candidate genes either known to cause abnormal neural tube closure in animals or previously associated with human MMC in the current study cohort. Approximately 70% of the study subjects carried one to nine URDVs among 302 candidate genes. Half of the study subjects carried heterozygous URDVs in multiple genes involved in the structure and/or function of cilium, cytoskeleton, extracellular matrix, WNT signaling, and/or cell migration. Another 20% of the study subjects carried heterozygous URDVs in candidate genes associated with gene transcription regulation, folate metabolism, or glucose metabolism. Presence of URDVs in the candidate genes involving these biological function groups may elevate the risk of developing myelomeningocele in the study cohort.
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Affiliation(s)
- K S Au
- Division of Medical Genetics, Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA.
| | - L Hebert
- Division of Medical Genetics, Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - P Hillman
- Division of Medical Genetics, Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - C Baker
- Division of Medical Genetics, Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA.,Munroe-Meyer Institute, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - M R Brown
- Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, University of Texas Health Science Center At Houston, Houston, TX, 77030, USA
| | - D-K Kim
- Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, University of Texas Health Science Center At Houston, Houston, TX, 77030, USA
| | - K Soldano
- Department of Medicine, Duke University Medical Center, Durham, NC, 27701, USA
| | - M Garrett
- Department of Medicine, Duke University Medical Center, Durham, NC, 27701, USA
| | - A Ashley-Koch
- Department of Medicine, Duke University Medical Center, Durham, NC, 27701, USA
| | - S Lee
- Department of Neurosciences and Pediatrics, University of California-San Diego, La Jolla, CA, 92093, USA.,Rady Children's Institute for Genomic Medicine, San Diego, CA, 92025, USA
| | - J Gleeson
- Department of Neurosciences and Pediatrics, University of California-San Diego, La Jolla, CA, 92093, USA.,Rady Children's Institute for Genomic Medicine, San Diego, CA, 92025, USA
| | - J E Hixson
- Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, University of Texas Health Science Center At Houston, Houston, TX, 77030, USA
| | - A C Morrison
- Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, University of Texas Health Science Center At Houston, Houston, TX, 77030, USA
| | - H Northrup
- Division of Medical Genetics, Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
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17
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Hebert L, Hillman P, Baker C, Brown M, Ashley-Koch A, Hixson JE, Morrison AC, Northrup H, Au KS. Burden of rare deleterious variants in WNT signaling genes among 511 myelomeningocele patients. PLoS One 2020; 15:e0239083. [PMID: 32970752 PMCID: PMC7514064 DOI: 10.1371/journal.pone.0239083] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/28/2020] [Indexed: 12/22/2022] Open
Abstract
Genes in the noncanonical WNT signaling pathway controlling planar cell polarity have been linked to the neural tube defect myelomeningocele. We hypothesized that some genes in the WNT signaling network have a higher mutational burden in myelomeningocele subjects than in reference subjects in gnomAD. Exome sequencing data from 511 myelomeningocele subjects was obtained in-house and data from 29,940 ethnically matched subjects was provided by version 2 of the publicly available Genome Aggregation Database. To compare mutational burden, we collapsed rare deleterious variants across each of 523 human WNT signaling genes in case and reference populations. Ten WNT signaling genes were disrupted with a higher mutational burden among Mexican American myelomeningocele subjects compared to reference subjects (Fishers exact test, P ≤ 0.05) and seven different genes were disrupted among individuals of European ancestry compared to reference subjects. Gene ontology enrichment analyses indicate that genes disrupted only in the Mexican American population play a role in planar cell polarity whereas genes identified in both populations are important for the regulation of canonical WNT signaling. In summary, evidence for WNT signaling genes that may contribute to myelomeningocele in humans is presented and discussed.
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Affiliation(s)
- Luke Hebert
- Department of Pediatrics, Division of Medical Genetics, McGovern Medical School at The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States of America
| | - Paul Hillman
- Department of Pediatrics, Division of Medical Genetics, McGovern Medical School at The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States of America
| | - Craig Baker
- Department of Pediatrics, Division of Medical Genetics, McGovern Medical School at The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States of America
| | - Michael Brown
- Human Genetics Center, Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health at The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States of America
| | - Allison Ashley-Koch
- Department of Medicine and Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, United States of America
| | - James E. Hixson
- Human Genetics Center, Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health at The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States of America
| | - Alanna C. Morrison
- Human Genetics Center, Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health at The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States of America
| | - Hope Northrup
- Department of Pediatrics, Division of Medical Genetics, McGovern Medical School at The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States of America
| | - Kit Sing Au
- Department of Pediatrics, Division of Medical Genetics, McGovern Medical School at The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, United States of America
- * E-mail:
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18
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Talton OO, Bates K, Salazar SR, Ji T, Schulz LC. Lean maternal hyperglycemia alters offspring lipid metabolism and susceptibility to diet-induced obesity in mice†. Biol Reprod 2020; 100:1356-1369. [PMID: 30698664 DOI: 10.1093/biolre/ioz009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 12/20/2018] [Accepted: 01/28/2019] [Indexed: 01/06/2023] Open
Abstract
We previously developed a model of gestational diabetes mellitus (GDM) in which dams exhibit glucose intolerance, insulin resistance, and reduced insulin response to glucose challenge only during pregnancy, without accompanying obesity. Here, we aimed to determine how lean gestational glucose intolerance affects offspring risk of metabolic dysfunction. One cohort of offspring was sacrificed at 19 weeks, and one at 31 weeks, with half of the second cohort placed on a high-fat, high-sucrose diet (HFHS) at 23 weeks. Exposure to maternal glucose intolerance increased weights of HFHS-fed offspring. Chow-fed offspring of GDM dams exhibited higher body fat percentages at 4, 12, and 20 weeks of age. At 28 weeks, offspring of GDM dams fed the HFHS but not the chow diet (CD) also had higher body fat percentages than offspring of controls (CON). Exposure to GDM increased the respiratory quotient (Vol CO2/Vol O2) in offspring. Maternal GDM increased adipose mRNA levels of peroxisome proliferator-activated receptor gamma (Pparg) and adiponectin (Adipoq) in 31-week-old CD-fed male offspring, and increased mRNA levels of insulin receptor (Insr) and lipoprotein lipase (Lpl) in 31-week-old male offspring on both diets. In liver at 31 weeks, mRNA levels of peroxisome proliferator-activated receptor alpha (Ppara) were elevated in CD-fed male offspring of GDM dams, and male offspring of GDM dams exhibited higher mRNA levels of Insr on both diets. Neither fasting insulin nor glucose tolerance was affected by exposure to GDM. Our findings show that GDM comprising glucose intolerance only during pregnancy programs increased adiposity in offspring, and suggests increased insulin sensitivity of subcutaneous adipose tissue.
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Affiliation(s)
- Omonseigho O Talton
- Department of Obstetrics, Gynecology, and Women's Health, University of Missouri, Columbia, Missouri, USA.,Division of Biological Sciences, University of Missouri, Columbia, Missouri, USA
| | - Keenan Bates
- Department of Obstetrics, Gynecology, and Women's Health, University of Missouri, Columbia, Missouri, USA.,Division of Biological Sciences, University of Missouri, Columbia, Missouri, USA
| | | | - Tieming Ji
- Department of Statistics, University of Missouri, Columbia, Missouri, USA
| | - Laura Clamon Schulz
- Department of Obstetrics, Gynecology, and Women's Health, University of Missouri, Columbia, Missouri, USA.,Division of Biological Sciences, University of Missouri, Columbia, Missouri, USA
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19
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Fame RM, Shannon ML, Chau KF, Head JP, Lehtinen MK. A concerted metabolic shift in early forebrain alters the CSF proteome and depends on MYC downregulation for mitochondrial maturation. Development 2019; 146:dev.182857. [PMID: 31575649 DOI: 10.1242/dev.182857] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/16/2019] [Indexed: 12/16/2022]
Abstract
Massive, coordinated cellular changes accompany the transition of central nervous system (CNS) progenitors from forebrain neurectodermal cells to specified neuroepithelial cells. We have previously found that MYC regulates the changing ribosomal and proteostatic landscapes in mouse forebrain precursors at embryonic days E8.5 and E10.5 (before and after neural tube closure; NTC) (Chau et al., 2018). Here, we demonstrate parallel coordinated transcriptional changes in metabolic machinery during this same stage of forebrain specification. Progenitors showed striking mitochondrial structural changes transitioning from glycolytic cristae at E8.5, to more traditional mitochondria at E10.5. Accordingly, glucose use shifted in progenitors such that E8.5 progenitors relied on glycolysis, and after NTC increasingly used oxidative phosphorylation. This metabolic shift was matched by changes in surrounding amniotic and cerebrospinal fluid proteomes. Importantly, these mitochondrial morphological shifts depend on MYC downregulation. Together, our findings demonstrate that metabolic shifting accompanies dynamic organelle and proteostatic remodeling of progenitor cells during the earliest stages of forebrain development.
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Affiliation(s)
- Ryann M Fame
- Department of Pathology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Morgan L Shannon
- Department of Pathology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Kevin F Chau
- Department of Pathology, Boston Children's Hospital, Boston, MA 02115, USA.,Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA 02115, USA
| | - Joshua P Head
- Department of Pathology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Maria K Lehtinen
- Department of Pathology, Boston Children's Hospital, Boston, MA 02115, USA .,Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA 02115, USA
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20
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López‐Escobar B, Wlodarczyk BJ, Caro‐Vega J, Lin Y, Finnell RH, Ybot‐González P. The interaction of maternal diabetes with mutations that affect folate metabolism and how they affect the development of neural tube defects in mice. Dev Dyn 2019; 248:900-917. [DOI: 10.1002/dvdy.92] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 07/18/2019] [Accepted: 07/21/2019] [Indexed: 12/17/2022] Open
Affiliation(s)
- Beatriz López‐Escobar
- Neurodevelopment Research GroupInstitute of Biomedicine of Seville/Hospital Virgen del Rocio/US/CSIC Sevilla Spain
- Department of Nutritional SciencesDell Pediatric Research Institute, The University of Texas at Austin Austin Texas USA
| | - Bogdan J. Wlodarczyk
- Department of Nutritional SciencesDell Pediatric Research Institute, The University of Texas at Austin Austin Texas USA
- Departments of Molecular and Cellular Biology and MedicineBaylor College of Medicine Houston Texas USA
| | - Jose Caro‐Vega
- Neurodevelopment Research GroupInstitute of Biomedicine of Seville/Hospital Virgen del Rocio/US/CSIC Sevilla Spain
| | - Ying Lin
- Department of Nutritional SciencesDell Pediatric Research Institute, The University of Texas at Austin Austin Texas USA
- Departments of Molecular and Cellular Biology and MedicineBaylor College of Medicine Houston Texas USA
| | - Richard H. Finnell
- Department of Nutritional SciencesDell Pediatric Research Institute, The University of Texas at Austin Austin Texas USA
- Departments of Molecular and Cellular Biology and MedicineBaylor College of Medicine Houston Texas USA
| | - Patricia Ybot‐González
- Neurodevelopment Research GroupInstitute of Biomedicine of Seville/Hospital Virgen del Rocio/US/CSIC Sevilla Spain
- Department of Neurology and NeurofisiologyHospital Virgen de Macarena Sevilla Spain
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21
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Głombik K, Trojan E, Kurek A, Budziszewska B, Basta-Kaim A. Inflammatory Consequences of Maternal Diabetes on the Offspring Brain: a Hippocampal Organotypic Culture Study. Neurotox Res 2019; 36:357-375. [PMID: 31197747 PMCID: PMC6616224 DOI: 10.1007/s12640-019-00070-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 05/10/2019] [Accepted: 05/28/2019] [Indexed: 01/09/2023]
Abstract
Gestational diabetes is a disorder associated with abnormal chronic inflammation that poses a risk to the developing fetus. We investigated the effects of experimentally induced diabetes (streptozotocin model) in Wistar female rats on the inflammatory status of the hippocampi of their offspring. Additionally, the impact of antidiabetic drugs (metformin and glyburide) on inflammatory processes was evaluated. Organotypic hippocampal cultures (OHCs) were prepared from the brains of the 7-day-old rat offspring of control and diabetic mother rats. On the 7th day in vitro, the cultures were pretreated with metformin (3 μM) or glyburide (1 μM) and then stimulated for 24 h with lipopolysaccharide (LPS, 1 μg/ml). The OHCs obtained from the offspring of diabetic mothers were characterized by the increased mortality of cells and an enhanced susceptibility to damage caused by LPS. Although we showed that LPS stimulated the secretion of pro-inflammatory cytokines (IL-1β, IL-6, TNF-α) in the control and diabetic cultures, the levels of IL-1β and IL-6 in the OHC medium obtained from the offspring of diabetic mothers were more pronounced. In the diabetic cultures, enhanced levels of TLR-4 and the overactivation of the NLRP3 inflammasome were demonstrated. Metformin and glyburide pretreatment normalized the LPS-induced IL-1β secretion in the control and diabetic cultures. Furthermore, glyburide diminished both: LPS-induced IL-6 and TNF-α secretion in the control and diabetic cultures and increased NF-κB p65 subunit phosphorylation. Glyburide also diminished the levels of the NLRP3 subunit and caspase-1, but only in the diabetic cultures. The results showed that maternal diabetes affected inflammatory processes in the offspring brain and increased hippocampal sensitivity to the LPS-induced inflammatory response. The use of antidiabetic agents, especially glyburide, had a beneficial impact on the changes caused by maternal diabetes.
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Affiliation(s)
- Katarzyna Głombik
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland.
| | - Ewa Trojan
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland
| | - Anna Kurek
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland
| | - Bogusława Budziszewska
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland
| | - Agnieszka Basta-Kaim
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland
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22
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Sarbu M, Ica R, Petrut A, Vukelić Ž, Munteanu CVA, Petrescu AJ, Zamfir AD. Gangliosidome of human anencephaly: A high resolution multistage mass spectrometry study. Biochimie 2019; 163:142-151. [PMID: 31201844 DOI: 10.1016/j.biochi.2019.05.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 05/28/2019] [Indexed: 11/17/2022]
Abstract
Widely dispersed throughout the entire body tissues, gangliosides (GGs) are essential components of neuronal cell membranes, where exhibit a vital role in neuronal function and brain development, directly influencing the neural tube formation, neurogenesis, neurotransmission, etc. Due to several factors, partial or complete closing faults of the fetal neural tube may occur in the first trimester of pregnancy, generating a series of neural tube defects (NTD), among which anencephaly. The absence in anencephaly of the forebrain and skull bones determines the exposure to the amniotic fluid of the remaining brain tissue and the spinal cord, causing the degeneration of the nervous system tissue. Based on the previously achieved information related to the direct alteration of neural development with deficient concentration of several GGs, a systematic and comparative mass spectrometry (MS) mapping assay on GGs originating from fetuses in different intrauterine developmental stages, i.e. the 29th (denoted An29), 35th (An35) and the 37th (An37) gestational weeks was here conducted. Our approach, based on Orbitrap MS under high sensitivity, resolution and mass accuracy conditions, enabled for the first time the nanoelectrospray ionization, detection and identification of over 150 glycoforms, mainly novel, polysialylated species. Such a pattern, specific for incipient developmental stages reliably documents the brain development stagnation, characteristic for anencephaly. Further, the fragmentation MS2-MS3 experiments by collision induced dissociation (CID) confirmed the incidence in all three samples of GT2(d18:1/16:2) as a potential biomarker. Therefore, this fingerprinting of the anencephalic gangliosidome may serve in development of approaches for routine screening and early diagnosis.
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Affiliation(s)
- Mirela Sarbu
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
| | - Raluca Ica
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
| | - Alina Petrut
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
| | - Željka Vukelić
- Department of Chemistry and Biochemistry, University of Zagreb Medical School, Zagreb, Croatia
| | | | - Andrei J Petrescu
- Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | - Alina D Zamfir
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania; "Aurel Vlaicu" University of Arad, Arad, Romania.
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23
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Yang P, Xu C, Reece EA, Chen X, Zhong J, Zhan M, Stumpo DJ, Blackshear PJ, Yang P. Tip60- and sirtuin 2-regulated MARCKS acetylation and phosphorylation are required for diabetic embryopathy. Nat Commun 2019; 10:282. [PMID: 30655546 PMCID: PMC6336777 DOI: 10.1038/s41467-018-08268-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 12/21/2018] [Indexed: 12/13/2022] Open
Abstract
Failure of neural tube closure results in severe birth defects and can be induced by high glucose levels resulting from maternal diabetes. MARCKS is required for neural tube closure, but the regulation and of its biological activity and function have remained elusive. Here, we show that high maternal glucose induced MARCKS acetylation at lysine 165 by the acetyltransferase Tip60, which is a prerequisite for its phosphorylation, whereas Sirtuin 2 (SIRT2) deacetylated MARCKS. Phosphorylated MARCKS dissociates from organelles, leading to mitochondrial abnormalities and endoplasmic reticulum stress. Phosphorylation dead MARCKS (PD-MARCKS) reversed maternal diabetes-induced cellular organelle stress, apoptosis and delayed neurogenesis in the neuroepithelium and ameliorated neural tube defects. Restoring SIRT2 expression in the developing neuroepithelium exerted identical effects as those of PD-MARCKS. Our studies reveal a new regulatory mechanism for MARCKS acetylation and phosphorylation that disrupts neurulation under diabetic conditions by diminishing the cellular organelle protective effect of MARCKS.
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Affiliation(s)
- Penghua Yang
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, 21201, MD, USA
| | - Cheng Xu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, 21201, MD, USA
| | - E Albert Reece
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, 21201, MD, USA.,Department of Biochemistry & Molecular Biology, University of Maryland School of Medicine, Baltimore, 21201, MD, USA
| | - Xi Chen
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, 21201, MD, USA
| | - Jianxiang Zhong
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, 21201, MD, USA
| | - Min Zhan
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, 21201, MD, USA
| | - Deborah J Stumpo
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, Durham, NC, 27709, USA
| | - Perry J Blackshear
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, Durham, NC, 27709, USA.,Departments of Medicine and Biochemistry, Duke University Medical Center, Durham, NC, 27710, USA
| | - Peixin Yang
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, 21201, MD, USA. .,Department of Biochemistry & Molecular Biology, University of Maryland School of Medicine, Baltimore, 21201, MD, USA.
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24
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Brennan GP, Vitsios DM, Casey S, Looney AM, Hallberg B, Henshall DC, Boylan GB, Murray DM, Mooney C. RNA-sequencing analysis of umbilical cord plasma microRNAs from healthy newborns. PLoS One 2018; 13:e0207952. [PMID: 30507953 PMCID: PMC6277075 DOI: 10.1371/journal.pone.0207952] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 11/08/2018] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs are a class of small non-coding RNA that regulate gene expression at a post-transcriptional level. MicroRNAs have been identified in various body fluids under normal conditions and their stability as well as their dysregulation in disease has led to ongoing interest in their diagnostic and prognostic potential. Circulating microRNAs may be valuable predictors of early-life complications such as birth asphyxia or neonatal seizures but there are relatively few data on microRNA content in plasma from healthy babies. Here we performed small RNA-sequencing analysis of plasma processed from umbilical cord blood in a set of healthy newborns. MicroRNA levels in umbilical cord plasma of four male and four female healthy babies, from two different centres were profiled. A total of 1,004 individual microRNAs were identified, which ranged from 426 to 659 per sample, of which 269 microRNAs were common to all eight samples. Many of these microRNAs are highly expressed and consistent with previous studies using other high throughput platforms. While overall microRNA expression did not differ between male and female cord blood plasma, we did detect differentially edited microRNAs in female plasma compared to male. Of note, and consistent with other studies of this type, adenylation and uridylation were the two most prominent forms of editing. Six microRNAs, miR-128-3p, miR-29a-3p, miR-9-5p, miR-218-5p, 204-5p and miR-132-3p were consistently both uridylated and adenylated in female cord blood plasma. These results provide a benchmark for microRNA profiling and biomarker discovery using umbilical cord plasma and can be used as comparative data for future biomarker profiles from complicated births or those with early-life developmental disorders.
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Affiliation(s)
- Gary P. Brennan
- Department of Physiology & Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
- FutureNeuro Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Dimitrios M. Vitsios
- European Molecular Biology Laboratory–European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, United Kingdom
| | - Sophie Casey
- INFANT Research Centre, University College Cork, Cork, Ireland
- Department of Paediatrics & Child Health, University College Cork, Cork, Ireland
| | | | - Boubou Hallberg
- Neonatology, Karolinska University Hospital, Stockholm, Sweden
| | - David C. Henshall
- Department of Physiology & Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
- FutureNeuro Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Geraldine B. Boylan
- INFANT Research Centre, University College Cork, Cork, Ireland
- Department of Paediatrics & Child Health, University College Cork, Cork, Ireland
| | - Deirdre M. Murray
- INFANT Research Centre, University College Cork, Cork, Ireland
- Department of Paediatrics & Child Health, University College Cork, Cork, Ireland
| | - Catherine Mooney
- FutureNeuro Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
- INFANT Research Centre, University College Cork, Cork, Ireland
- School of Computer Science, University College Dublin, Belfield, Dublin 4, Ireland
- * E-mail:
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25
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Herion NJ, Kruger C, Staszkiewicz J, Kappen C, Salbaum JM. Embryonic cell migratory capacity is impaired upon exposure to glucose in vivo and in vitro. Birth Defects Res 2018; 111:999-1012. [PMID: 30451383 DOI: 10.1002/bdr2.1398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 08/21/2018] [Accepted: 08/23/2018] [Indexed: 12/27/2022]
Abstract
BACKGROUND Impairments in cell migration during vertebrate gastrulation lead to structural birth defects, such as heart defects and neural tube defects. These defects are more frequent in progeny from diabetic pregnancies, and we have recently provided evidence that maternal diabetes leads to impaired migration of embryonic mesodermal cells in a mouse model of diabetic pregnancy. METHODS We here report the isolation of primary cell lines from normal and diabetes-exposed embryos of the nonobese diabetic mouse strain, and characterization of their energy metabolism and expression of nutrient transporter genes by quantitative real-time PCR. RESULTS Expression levels of several genes in the glucose transporter and fatty acid transporter gene families were altered in diabetes-exposed cells. Notably, primary cells from embryos with prior in vivo exposure to maternal diabetes exhibited reduced capacity for cell migration in vitro. CONCLUSIONS Primary cells isolated from diabetes-exposed embryos retained a "memory" of their in vivo exposure, manifesting in cell migration impairment. Thus, we have successfully established an in vitro experimental model for the mesoderm migration defects observed in diabetes-exposed mouse embryos.
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Affiliation(s)
- Nils Janis Herion
- University of Heidelberg Medical School, Heidelberg, Germany.,Department of Developmental Biology, Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Claudia Kruger
- Department of Developmental Biology, Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Jaroslaw Staszkiewicz
- Department of Developmental Biology, Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - Claudia Kappen
- Department of Developmental Biology, Pennington Biomedical Research Center, Baton Rouge, Louisiana
| | - J Michael Salbaum
- Department of Regulation of Gene Expression, Pennington Biomedical Research Center, Baton Rouge, Louisiana
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Bai B, Zhang Q, Wan C, Li D, Zhang T, Li H. CBP/p300 inhibitor C646 prevents high glucose exposure induced neuroepithelial cell proliferation. Birth Defects Res 2018; 110:1118-1128. [PMID: 30114346 DOI: 10.1002/bdr2.1360] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 04/17/2018] [Accepted: 05/07/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Maternal diabetes related neural tube defects (NTDs) are a result of oxidative stress and apoptosis. However, the molecular mechanism behind the pathogenesis is not fully understood. Here, we report that high glucose exposure-induced epigenetic changes influence histone H4 acetylation and neuroepithelial cell proliferation. We also show that the acetyltransferase inhibitor C646 can prevent high glucose induced changes in histone H4 acetylation and neuroepithelial cell proliferation. METHODS By using LC-MS/MS as an unbiased approach, we screened the histone acetylation profile in an E9 neuroepithelial cell line (NE-4C) under high glucose exposure. We further explored the mechanism in cells in vitro and in maternal diabetes-induced mouse embryos in vivo. RESULTS We identified 35 core histone acetylation marks in normal E9 neuroepithelial cells, whereas high glucose exposure resulted in novel acetylation sites on H4K31 and H4K44. Acetylation levels of embryonic development associated H4K5/K8/K12/K16 increased in neuroepithelial cells exposed to high glucose in vitro and in brain tissue from maternal diabetes induced exencephalic embryos in vivo. Further, mRNA level of histone acetyltransferase CBP encoded gene Crebbp was significantly increased both in vitro and in vivo. The addition of C646, a selective inhibitor for CBP/p300, significantly rescued increase of H4K5/K8/K12/K16 acetylation levels and H3S10pi-labeled neuroepithelial cell proliferation induced by high glucose exposure. CONCLUSION Our data provide complementary insights for potential mechanisms of maternal diabetes induced NTDs.
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Affiliation(s)
- Baoling Bai
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Qin Zhang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Chunlei Wan
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Dan Li
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Ting Zhang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Huili Li
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Children's Hospital Colorado, Aurora, Colorado, 80045
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Abdullah NL, Gunasekaran R, Mohd-Zin SW, Lim BH, Maniam P, Mohd-Salleh AS, Thong MK, Chik Z, Nordin N, Omar Z, Engkasan JP, Ganesan D, Aiezzah ZN, Ahmad-Annuar A, Abdul-Aziz NM. Cranial neural tube defect after trimethoprim exposure. BMC Res Notes 2018; 11:475. [PMID: 30012199 PMCID: PMC6048906 DOI: 10.1186/s13104-018-3593-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 07/12/2018] [Indexed: 01/22/2023] Open
Abstract
OBJECTIVES The Neural Tube Defects Research Group of University of Malaya was approached to analyze a tablet named TELSE, which may have resulted in a baby born with central nervous system malformation at the University of Malaya Medical Centre. In this animal experimental study, we investigated the content of TELSE and exposure of its contents that resulted in failure of primary neurulation. RESULTS Liquid Chromatography Tandem Mass spectrophotometry analysis of the TELSE tablet confirmed the presence of trimethoprim as the active compound. The TELSE tablet-treated females produced significant numbers of embryos with exencephaly (n = 8, 36.4%, *P < 0.0001), in all litters. The TELSE tablet-treated females subsequently given folic acid did not result in pregnancies despite there being evidence of possible resorption. Furthermore, after multiple rounds of mating which did not yield viable pregnancies, eventually, 2 embryos with exencephaly were harvested in a litter of 6 at 0.05% w/v pure trimethoprim once. The use of trimethoprim, a folic acid antagonist, peri-conceptionally increased the risk of exencephaly in the mouse.
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Affiliation(s)
- Nor Linda Abdullah
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Molecular Pathology Unit, Cancer Research Centre, Institute for Medical Research, Jalan Pahang, 50588 Kuala Lumpur, Malaysia
| | - Renuka Gunasekaran
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Siti Waheeda Mohd-Zin
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Bee-Hui Lim
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Perdana University Graduate School of Medicine, Block B and D1, MAEPS Building, MARDI Complex, Jalan MAEPS, 43400 Serdang, Selangor, Malaysia
| | - Pramila Maniam
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Anis Shuhada Mohd-Salleh
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Meow-Keong Thong
- Department of Paediatrics, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Zamri Chik
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Department of Pharmacology, Faculty of Medicine, University of Malaya Bioequivalence and Testing Centre (UBAT), University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Noreena Nordin
- Department of Pharmacology, Faculty of Medicine, University of Malaya Bioequivalence and Testing Centre (UBAT), University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Zaliha Omar
- Department of Rehabilitation Medicine, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Julia Patrick Engkasan
- Department of Rehabilitation Medicine, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Dharmendra Ganesan
- Department of Surgery, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Zakaria Nurul Aiezzah
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Unit of Pathology & Transfusion, Hospital Parit Buntar, Jalan Sempadan, 34200 Parit Buntar, Perak, Malaysia
| | - Azlina Ahmad-Annuar
- Department of Biomedical Science, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Chen X, Zhong J, Dong D, Liu G, Yang P. Endoplasmic Reticulum Stress-Induced CHOP Inhibits PGC-1α and Causes Mitochondrial Dysfunction in Diabetic Embryopathy. Toxicol Sci 2018; 158:275-285. [PMID: 28482072 DOI: 10.1093/toxsci/kfx096] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Endoplasmic reticulum (ER) stress has been implicated in the development of maternal diabetes-induced neural tube defects (NTDs). ER stress-induced C/EBP homologous protein (CHOP) plays an important role in the pro-apoptotic execution pathways. However, the molecular mechanism underlying ER stress- and CHOP-induced neuroepithelium cell apoptosis in diabetic embryopathy is still unclear. Deletion of the Chop gene significantly reduced maternal diabetes-induced NTDs. CHOP deficiency abrogated maternal diabetes-induced mitochondrial dysfunction and neuroepithelium cell apoptosis. Further analysis demonstrated that CHOP repressed the expression of peroxisome-proliferator-activated receptor-γ coactivator-1α (PGC-1α), an essential regulator for mitochondrial biogenesis and function. Both CHOP deficiency in vivo and knockdown in vitro restore high glucose-suppressed PGC-1α expression. In contrast, CHOP overexpression mimicked inhibition of PGC-1α by high glucose. In response to the ER stress inducer tunicamycin, PGC-1α expression was decreased, whereas the ER stress inhibitor 4-phenylbutyric acid blocked high glucose-suppressed PGC-1α expression. Moreover, maternal diabetes in vivo and high glucose in vitro promoted the interaction between CHOP and the PGC-1α transcriptional regulator CCAAT/enhancer binding protein-β (C/EBPβ), and reduced C/EBPβ binding to the PGC-1α promoter leading to markedly decrease in PGC-1α expression. Together, our findings support the hypothesis that maternal diabetes-induced ER stress increases CHOP expression which represses PGC-1α through suppressing the C/EBPβ transcriptional activity, subsequently induces mitochondrial dysfunction and ultimately results in NTDs.
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Affiliation(s)
- Xi Chen
- Center for Translational Research, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, People's Republic of China.,Department of Obstetrics, Gynecology & Reproductive Sciences
| | - Jianxiang Zhong
- Department of Obstetrics, Gynecology & Reproductive Sciences
| | - Daoyin Dong
- Department of Obstetrics, Gynecology & Reproductive Sciences
| | - Gentao Liu
- Center for Translational Research, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, People's Republic of China
| | - Peixin Yang
- Center for Translational Research, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, People's Republic of China.,Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201
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Abstract
Objective To review fetal and infant deaths from women enrolled in Indianapolis Healthy Start using the National Fetal and Infant Mortality Review (FIMR) methods to provide strategies for prevention. METHODS Marion County Public Health Department (MCPHD) FIMR staff identified and reviewed 22 fetal and infant deaths to Indianapolis Healthy Start program participants between 2005 and 2012. Trained FIMR nurses completed 13 of 20 maternal interviews and compiled case summaries of all deaths from the MCPHD FIMR database.. Results Case review teams identified a total of 349 family strengths, 219 contributing factors, and made 220 recommendations for future pregnancies. FIMR deliberation values for Healthy Start program participant deaths were similar to other infant deaths in Marion County during the same time period. Common themes that emerged from the reviews included lack of social support, absence of paternal involvement, substance abuse, non-compliance, and poor health behaviors leading to chronic health conditions that complicated many pregnancies. Conclusions A number of the infant deaths in this review could have been prevented with preconception and inter-conception education and by improving the quality and content of prenatal care.
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30
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Hosseinpour-Moghaddam K, Caraglia M, Sahebkar A. Autophagy induction by trehalose: Molecular mechanisms and therapeutic impacts. J Cell Physiol 2018; 233:6524-6543. [PMID: 29663416 DOI: 10.1002/jcp.26583] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/08/2018] [Indexed: 12/16/2022]
Abstract
The balance between synthesis and degradation is crucial to maintain cellular homeostasis and different mechanisms are known to keep this balance. In this review, we will provide a short overview on autophagy as an intracellular homeostatic degradative machinery. We will also describe the involvement of downregulation of autophagy in numerous diseases including neurodegenerative diseases, cancer, aging, metabolic disorders, and other infectious diseases. Therefore, modulation of autophagic processes can represent a promising way of intervention in different diseases including neurodegeneration and cancer. Trehalose, also known as mycose, is a natural disaccharide found extensively but not abundantly among several organisms. It is described that trehalose can work as an important autophagy modulator and can be proficiently used in the control several diseases in which autophagy plays an important role. On these bases, we describe here the role of trehalose as an innovative drug in the treatment of neurodegenerative diseases and other illnesses opening a new scenario of intervention in conditions difficult to be treated.
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Affiliation(s)
| | - Michele Caraglia
- Department of Biochemistry, Biophysics and General Pathology, University of Campania "L. Vanvitelli", Naples, Italy
| | - Amirhossein Sahebkar
- Neurogenic inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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31
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Zhao Y, Dong D, Reece EA, Wang AR, Yang P. Oxidative stress-induced miR-27a targets the redox gene nuclear factor erythroid 2-related factor 2 in diabetic embryopathy. Am J Obstet Gynecol 2018; 218:136.e1-136.e10. [PMID: 29100869 DOI: 10.1016/j.ajog.2017.10.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/23/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Maternal diabetes induces neural tube defects, and oxidative stress is a causal factor for maternal diabetes-induced neural tube defects. The redox gene nuclear factor erythroid 2-related factor 2 is the master regulator of the cellular antioxidant system. OBJECTIVE In this study, we aimed to determine whether maternal diabetes inhibits nuclear factor erythroid 2-related factor 2 expression and nuclear factor erythroid 2-related factor 2-controlled antioxidant genes through the redox-sensitive miR-27a. STUDY DESIGN We used a well-established type 1 diabetic embryopathy mouse model induced by streptozotocin for our in vivo studies. Embryos at embryonic day 8.5 were harvested for analysis of nuclear factor erythroid 2-related factor 2, nuclear factor erythroid 2-related factor 2-controlled antioxidant genes, and miR-27a expression. To determine if mitigating oxidative stress inhibits the increase of miR-27a and the decrease of nuclear factor erythroid 2-related factor 2 expression, we induced diabetic embryopathy in superoxide dismutase 2 (mitochondrial-associated antioxidant gene)-overexpressing mice. This model exhibits reduced mitochondria reactive oxygen species even in the presence of hyperglycemia. To investigate the causal relationship between miR-27a and nuclear factor erythroid 2-related factor 2 in vitro, we examined C17.2 neural stem cells under normal and high-glucose conditions. RESULTS We observed that the messenger RNA and protein levels of nuclear factor erythroid 2-related factor 2 were significantly decreased in embryos on embryonic day 8.5 from diabetic dams compared to those from nondiabetic dams. High-glucose also significantly decreased nuclear factor erythroid 2-related factor 2 expression in a dose- and time-dependent manner in cultured neural stem cells. Our data revealed that miR-27a was up-regulated in embryos on embryonic day 8.5 exposed to diabetes, and that high glucose increased miR-27a levels in a dose- and time-dependent manner in cultured neural stem cells. In addition, we found that a miR-27a inhibitor abrogated the inhibitory effect of high glucose on nuclear factor erythroid 2-related factor 2 expression, and a miR-27a mimic suppressed nuclear factor erythroid 2-related factor 2 expression in cultured neural stem cells. Furthermore, our data indicated that the nuclear factor erythroid 2-related factor 2-controlled antioxidant enzymes glutamate-cysteine ligase catalytic subunit, glutamate-cysteine ligase modifier subunit, and glutathione S-transferase A1 were down-regulated by maternal diabetes in embryos on embryonic day 8.5 and high glucose in cultured neural stem cells. Inhibiting miR-27a restored expression of glutamate-cysteine ligase catalytic subunit, glutamate-cysteine ligase modifier subunit, and glutathione S-transferase A1. Overexpressing superoxide dismutase 2 reversed the maternal diabetes-induced increase of miR-27a and suppression of nuclear factor erythroid 2-related factor 2 and nuclear factor erythroid 2-related factor 2-controlled antioxidant enzymes. CONCLUSION Our study demonstrates that maternal diabetes-induced oxidative stress increases miR-27a, which, in turn, suppresses nuclear factor erythroid 2-related factor 2 and its responsive antioxidant enzymes, resulting in diabetic embryopathy.
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Affiliation(s)
- Yang Zhao
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Daoyin Dong
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - E Albert Reece
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD; Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD
| | - Ashley R Wang
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Peixin Yang
- Chinese-American Research Institute for Diabetic Complications, School of Pharmaceutical Sciences, Wenzhou Medical University, Chashan University-town, Wenzhou, Zhejiang, China; Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD; Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD.
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32
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Solís KH, Méndez LI, García-López G, Díaz NF, Portillo W, De Nova-Ocampo M, Molina-Hernández A. The Histamine H1 Receptor Participates in the Increased Dorsal Telencephalic Neurogenesis in Embryos from Diabetic Rats. Front Neurosci 2017; 11:676. [PMID: 29311766 PMCID: PMC5735119 DOI: 10.3389/fnins.2017.00676] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 11/20/2017] [Indexed: 01/05/2023] Open
Abstract
Increased neuron telencephalic differentiation during deep cortical layer formation has been reported in embryos from diabetic mice. Transitory histaminergic neurons within the mesencephalon/rhombencephalon are responsible for fetal histamine synthesis during development, fibers from this system arrives to the frontal and parietal cortex at embryo day (E) 15. Histamine is a neurogenic factor for cortical neural stem cells in vitro through H1 receptor (H1R) which is highly expressed during corticogenesis in rats and mice. Furthermore, in utero administration of an H1R antagonist, chlorpheniramine, decreases the neuron markers microtubuline associated protein 2 (MAP2) and forkhead box protein 2. Interestingly, in the diabetic mouse model of diabetes induced with streptozotocin, an increase in fetal neurogenesis in terms of MAP2 expression in the telencephalon is reported at E11.5. Because of the reported effects on cortical neuron differentiation of maternal diabetes in one hand and of histamine in the other, here the participation of histamine and H1R on the increased dorsal telencephalic neurogenesis was explored. First, the increased neurogenesis in the dorsal telencephalon at E14 in diabetic rats was corroborated by immunohistochemistry and Western blot. Then, changes during corticogenesis in the level of histamine was analyzed by ELISA and in H1R expression by qRT-PCR and Western blot and, finally, we tested H1R participation in the increased dorsal telencephalic neurogenesis by the systemic administration of chlorpheniramine. Our results showed a significant increase of histamine at E14 and in the expression of the receptor at E12. The administration of chlorpheniramine to diabetic rats at E12 prevented the increased expression of βIII-tubulin and MAP2 mRNAs (neuron markers) and partially reverted the increased level of MAP2 protein at E14, concluding that H1R have an important role in the increased neurogenesis within the dorsal telencephalon of embryos from diabetic rats. This study opens new perspective on the participation of HA and H1R receptor in early corticogenesis in health and disease.
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Affiliation(s)
- Karina H Solís
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Mexico City, Mexico.,Programa Institucional de Biomedicina Molecular, Sección de Estudios de Posgrado e Investigación, Insituto Politécnico Nacional, Escuela Nacional de Medicina y Homeopatía, Mexico City, Mexico
| | - Laura I Méndez
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Mexico City, Mexico
| | - Guadalupe García-López
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Mexico City, Mexico
| | - Néstor F Díaz
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Mexico City, Mexico
| | - Wendy Portillo
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla Querétaro, Mexico
| | - Mónica De Nova-Ocampo
- Programa Institucional de Biomedicina Molecular, Sección de Estudios de Posgrado e Investigación, Insituto Politécnico Nacional, Escuela Nacional de Medicina y Homeopatía, Mexico City, Mexico
| | - Anayansi Molina-Hernández
- Departamento de Fisiología y Desarrollo Celular, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Mexico City, Mexico
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Zhao J, Hakvoort TBM, Ruijter JM, Jongejan A, Koster J, Swagemakers SMA, Sokolovic A, Lamers WH. Maternal diabetes causes developmental delay and death in early-somite mouse embryos. Sci Rep 2017; 7:11714. [PMID: 28916763 PMCID: PMC5601907 DOI: 10.1038/s41598-017-11696-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 08/22/2017] [Indexed: 12/20/2022] Open
Abstract
Maternal diabetes causes congenital malformations and delays embryonic growth in the offspring. We investigated effects of maternal diabetes on mouse embryos during gastrulation and early organogenesis (ED7.5–11.5). Female mice were made diabetic with streptozotocin, treated with controlled-release insulin implants, and mated. Maternal blood glucose concentrations increased up to embryonic day (ED) 8.5. Maternal hyperglycemia induced severe growth retardation (approx.1 day) in 53% of the embryos on ED8.5, death in most of these embryos on ED9.5, and the termination of pregnancy on ED10.5 in litters with >20% dead embryos. Due to this selection, developmental delays and reduction in litter size were no longer observed thereafter in diabetic pregnancies. Male and female embryos were equally sensitive. High-throughput mRNA sequencing and pathway analysis of differentially expressed genes showed that retarded embryos failed to mount the adaptive suppression of gene expression that characterized non-retarded embryos (cell proliferation, cytoskeletal remodeling, oxidative phosphorylation). We conclude that failure of perigastrulation embryos of diabetic mothers to grow and survive is associated with their failure to shut down pathways that are strongly down-regulated in otherwise similar non-retarded embryos. Embryos that survive the early and generalized adverse effect of maternal diabetes, therefore, appear the subset in which malformations become manifest.
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Affiliation(s)
- Jing Zhao
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, Netherlands
| | - Theodorus B M Hakvoort
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, Netherlands
| | - Jan M Ruijter
- Department of Anatomy, Embryology & Physiology, AMC, Amsterdam, Netherlands
| | - Aldo Jongejan
- Bioinformatics Laboratory, Department of Clinical Epidemiology, Biostatistics & Bioinformatics, AMC, Amsterdam, Netherlands
| | - Jan Koster
- Department of Oncogenomics, AMC, Amsterdam, Netherlands
| | | | - Aleksandar Sokolovic
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, Netherlands
| | - Wouter H Lamers
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, Amsterdam, Netherlands.
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Wang F, Xu C, Reece EA, Li X, Wu Y, Harman C, Yu J, Dong D, Wang C, Yang P, Zhong J, Yang P. Protein kinase C-alpha suppresses autophagy and induces neural tube defects via miR-129-2 in diabetic pregnancy. Nat Commun 2017; 8:15182. [PMID: 28474670 PMCID: PMC5424165 DOI: 10.1038/ncomms15182] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 03/03/2017] [Indexed: 12/19/2022] Open
Abstract
Gene deletion-induced autophagy deficiency leads to neural tube defects (NTDs), similar to those in diabetic pregnancy. Here we report the key autophagy regulators modulated by diabetes in the murine developing neuroepithelium. Diabetes predominantly leads to exencephaly, induces neuroepithelial cell apoptosis and suppresses autophagy in the forebrain and midbrain of NTD embryos. Deleting the Prkca gene, which encodes PKCα, reverses diabetes-induced autophagy impairment, cellular organelle stress and apoptosis, leading to an NTD reduction. PKCα increases the expression of miR-129-2, which is a negative regulator of autophagy. miR-129-2 represses autophagy by directly targeting PGC-1α, a positive regulator for mitochondrial function, which is disturbed by maternal diabetes. PGC-1α supports neurulation by stimulating autophagy in neuroepithelial cells. These findings identify two negative autophagy regulators, PKCα and miR-129-2, which mediate the teratogenicity of hyperglycaemia leading to NTDs. We also reveal a function for PGC-1α in embryonic development through promoting autophagy and ameliorating hyperglycaemia-induced NTDs.
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Affiliation(s)
- Fang Wang
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Cheng Xu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - E. Albert Reece
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
- Department of Biochemistry & Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Xuezheng Li
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Yanqing Wu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Christopher Harman
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Jingwen Yu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Daoyin Dong
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Cheng Wang
- Department of Obstetrics, Gynecology, Nebraska Medical Center, Omaha, Nebraska 68198, USA
| | - Penghua Yang
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Jianxiang Zhong
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Peixin Yang
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
- Department of Biochemistry & Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
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García-Sanz P, Mirasierra M, Moratalla R, Vallejo M. Embryonic defence mechanisms against glucose-dependent oxidative stress require enhanced expression of Alx3 to prevent malformations during diabetic pregnancy. Sci Rep 2017; 7:389. [PMID: 28341857 PMCID: PMC5428206 DOI: 10.1038/s41598-017-00334-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/20/2017] [Indexed: 12/20/2022] Open
Abstract
Oxidative stress constitutes a major cause for increased risk of congenital malformations associated to severe hyperglycaemia during pregnancy. Mutations in the gene encoding the transcription factor ALX3 cause congenital craniofacial and neural tube defects. Since oxidative stress and lack of ALX3 favour excessive embryonic apoptosis, we investigated whether ALX3-deficiency further increases the risk of embryonic damage during gestational hyperglycaemia in mice. We found that congenital malformations associated to ALX3-deficiency are enhanced in diabetic pregnancies. Increased expression of genes encoding oxidative stress-scavenging enzymes in embryos from diabetic mothers was blunted in the absence of ALX3, leading to increased oxidative stress. Levels of ALX3 increased in response to glucose, but ALX3 did not activate oxidative stress defence genes directly. Instead, ALX3 stimulated the transcription of Foxo1, a master regulator of oxidative stress-scavenging genes, by binding to a newly identified binding site located in the Foxo1 promoter. Our data identify ALX3 as an important component of the defence mechanisms against the occurrence of developmental malformations during diabetic gestations, stimulating the expression of oxidative stress-scavenging genes in a glucose-dependent manner via Foxo1 activation. Thus, ALX3 deficiency provides a novel molecular mechanism for developmental defects arising from maternal hyperglycaemia.
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Affiliation(s)
- Patricia García-Sanz
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC)/Universidad Autónoma de Madrid, and Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain.,Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, and CIBERNED, Instituto de Salud Carlos III, Madrid, Spain
| | - Mercedes Mirasierra
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC)/Universidad Autónoma de Madrid, and Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain
| | - Rosario Moratalla
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, and CIBERNED, Instituto de Salud Carlos III, Madrid, Spain
| | - Mario Vallejo
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC)/Universidad Autónoma de Madrid, and Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain.
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Sahmat A, Gunasekaran R, Mohd-Zin SW, Balachandran L, Thong MK, Engkasan JP, Ganesan D, Omar Z, Azizi AB, Ahmad-Annuar A, Abdul-Aziz NM. The Prevalence and Distribution of Spina Bifida in a Single Major Referral Center in Malaysia. Front Pediatr 2017; 5:237. [PMID: 29170734 PMCID: PMC5684468 DOI: 10.3389/fped.2017.00237] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 10/19/2017] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The aim of this study is to review the medical history of patients with spina bifida, encompassing both aperta and occulta types born between the years 2003 until 2016, spanning a 13-year time period. We assessed each patient and maternal parent information, details of the defects, and conditions associated with the primary defect. We also include information on patients' ambulation and education level (where available). METHODS Data from the Department of Patient Information University of Malaya Medical Centre (UMMC), Malaysia was captured from spina bifida patients (ICD10: Q05 spina bifida). Data involved patients referred to UMMC between 2003 and 2016 and/or born in UMMC within that particular time frame. We filtered and extracted the information according to the data of clinical examination, medical review, and social history provided in the medical records. RESULTS A total of 86 patient records with spina bifida were analyzed. Spina bifida prevalence rate in this study ranged from 1.87 to 8.9 per 1,000 live births depending on weightage. We note that ethnicity was a factor whereby the highest numbers of spina bifida were from Malays (n = 36, 41.86%), followed by equal numbers of Chinese and Indians (n = 24, 27.91%). The highest number of diagnoses reported was myelomeningocele type-spina bifida (n = 39, 45.35%). The most common site of the spina bifida lesion was located at the lumbar region irrespective of aperta or occulta types (n = 23, 26.74%). Data on other associated phenotypes of spina bifida such as hydrocephalus and encephalocele was also captured at 37.21% (n = 32) and 1.16% (n = 1), respectively. In terms of mobility, 32.84% (n = 22/67) of patients between the ages 4 and 16 years old were found to be mobile. As many as 36.07% of patients ranging from 5 to 16 years of age (n = 22/61) received formal education ranging from preschool to secondary school. CONCLUSION The prevalence of spina bifida in UMMC is as according to international statistics which is in the range of 0.5-10 per 1,000 live births. Majority of the reported cases were males, Malays, full term babies, and of the myelomeningocele phenotype located at the lumbar region.
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Affiliation(s)
- Adibah Sahmat
- Faculty of Medicine, Department of Parasitology, University of Malaya, Kuala Lumpur, Malaysia
| | - Renuka Gunasekaran
- Faculty of Medicine, Department of Parasitology, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti W Mohd-Zin
- Faculty of Medicine, Department of Parasitology, University of Malaya, Kuala Lumpur, Malaysia
| | - Lohis Balachandran
- Faculty of Medicine, Department of Parasitology, University of Malaya, Kuala Lumpur, Malaysia
| | - Meow-Keong Thong
- Faculty of Medicine, Department of Paediatrics, University of Malaya, Kuala Lumpur, Malaysia
| | - Julia P Engkasan
- Faculty of Medicine, Department of Rehabilitation Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Dharmendra Ganesan
- Faculty of Medicine, Department of Surgery, University of Malaya, Kuala Lumpur, Malaysia
| | - Zaliha Omar
- Faculty of Medicine, Department of Rehabilitation Medicine, University of Malaya, Kuala Lumpur, Malaysia.,Rehabilitation Medicine Department, Sunway Medical Centre, Petaling Jaya, Malaysia
| | - Abu Bakar Azizi
- Department of Surgery, National University of Malaysia, Kuala Lumpur, Malaysia
| | - Azlina Ahmad-Annuar
- Faculty of Medicine, Department of Biomedical Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Noraishah M Abdul-Aziz
- Faculty of Medicine, Department of Parasitology, University of Malaya, Kuala Lumpur, Malaysia
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37
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Chen G, Sun W, Liang Y, Chen T, Guo W, Tian W. Maternal diabetes modulates offspring cell proliferation and apoptosis during odontogenesis via the TLR4/NF-κB signalling pathway. Cell Prolif 2016; 50. [PMID: 27981756 DOI: 10.1111/cpr.12324] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 11/05/2016] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES Maternal gestational diabetes leads to an adverse in utero environment and increases the risk of malformations during embryo organogenesis. In the present study, we analysed the effects of maternal diabetes on tooth germ cell proliferation and apoptosis in offspring, and investigated their underlying mechanisms. MATERIALS AND METHODS A rat model of maternal diabetes was induced by intraperitoneal injection of streptozotocin and the pregnant rats were divided into three groups: controls, the diabetic group and diabetic group with insulin treatment. Offspring of the three groups were collected and cell proliferation and apoptosis in tooth germs were analysed. Primary dental papilla cells and dental epithelial stem cells were isolated and treated with high glucose in vitro, in an attempt to simulate maternal diabetes-induced hyperglycaemia in vivo. RESULTS Maternal diabetes significantly affected cell proliferation and apoptosis in offspring tooth germs. The TLR4/NF-ĸB signalling pathway was activated in the tooth germs of offspring of diabetic dams. High glucose treatment activated the TLR4/NF-ĸB signalling pathway in primary dental papilla cells and dental epithelial stem cells in vitro, resulting in suppression of cell proliferation and enhancement of apoptosis. TLR4 knockdown significantly reduced adverse effects induced by high glucose treatment. CONCLUSIONS Maternal gestational diabetes significantly impaired dental epithelial and mesenchymal cell proliferation and apoptosis in offspring, possibly by activation of the TLR4/NF-ĸB signalling pathway.
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Affiliation(s)
- Guoqing Chen
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Wenhua Sun
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Yan Liang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, China.,Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Tian Chen
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Weihua Guo
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, China.,Department of Pedodontics, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Weidong Tian
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China.,National Engineering Laboratory for Oral Regenerative Medicine, West China College of Stomatology, Sichuan University, Chengdu, China.,Department of Oral and Maxillofacial Surgery, West China College of Stomatology, Sichuan University, Chengdu, China
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38
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Zhao J, Hakvoort TBM, Willemsen AM, Jongejan A, Sokolovic M, Bradley EJ, de Boer VCJ, Baas F, van Kampen AHC, Lamers WH. Effect of Hyperglycemia on Gene Expression during Early Organogenesis in Mice. PLoS One 2016; 11:e0158035. [PMID: 27433804 PMCID: PMC4951019 DOI: 10.1371/journal.pone.0158035] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Accepted: 06/09/2016] [Indexed: 01/01/2023] Open
Abstract
Background Cardiovascular and neural malformations are common sequels of diabetic pregnancies, but the underlying molecular mechanisms remain unknown. We hypothesized that maternal hyperglycemia would affect the embryos most shortly after the glucose-sensitive time window at embryonic day (ED) 7.5 in mice. Methods Mice were made diabetic with streptozotocin, treated with slow-release insulin implants and mated. Pregnancy aggravated hyperglycemia. Gene expression profiles were determined in ED8.5 and ED9.5 embryos from diabetic and control mice using Serial Analysis of Gene Expression and deep sequencing. Results Maternal hyperglycemia induced differential regulation of 1,024 and 2,148 unique functional genes on ED8.5 and ED9.5, respectively, mostly in downward direction. Pathway analysis showed that ED8.5 embryos suffered mainly from impaired cell proliferation, and ED9.5 embryos from impaired cytoskeletal remodeling and oxidative phosphorylation (all P ≤ E-5). A query of the Mouse Genome Database showed that 20–25% of the differentially expressed genes were caused by cardiovascular and/or neural malformations, if deficient. Despite high glucose levels in embryos with maternal hyperglycemia and a ~150-fold higher rate of ATP production from glycolysis than from oxidative phosphorylation on ED9.5, ATP production from both glycolysis and oxidative phosphorylation was reduced to ~70% of controls, implying a shortage of energy production in hyperglycemic embryos. Conclusion Maternal hyperglycemia suppressed cell proliferation during gastrulation and cytoskeletal remodeling during early organogenesis. 20–25% of the genes that were differentially regulated by hyperglycemia were associated with relevant congenital malformations. Unexpectedly, maternal hyperglycemia also endangered the energy supply of the embryo by suppressing its glycolytic capacity.
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Affiliation(s)
- Jing Zhao
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Theodorus B. M. Hakvoort
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - A. Marcel Willemsen
- Bioinformatics Laboratory, Department of Bioinformatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Aldo Jongejan
- Bioinformatics Laboratory, Department of Bioinformatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Milka Sokolovic
- Department of Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Edward J. Bradley
- Department of Genome Analysis, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Vincent C. J. de Boer
- Department of Laboratory Genetic Metabolic Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Frank Baas
- Department of Genome Analysis, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Antoine H. C. van Kampen
- Bioinformatics Laboratory, Department of Bioinformatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Biosystems Data Analysis Group, University of Amsterdam, Amsterdam, The Netherlands
| | - Wouter H. Lamers
- Tytgat Institute for Liver and Intestinal Research, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- * E-mail:
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Abstract
Diabetic embryopathy is a theoretical enigma and a clinical challenge. Both type 1 and type 2 diabetic pregnancy carry a significant risk for fetal maldevelopment, and the precise reasons for the diabetes-induced teratogenicity are not clearly identified. The experimental work in this field has revealed a partial, however complex, answer to the teratological question, and we will review some of the latest suggestions.
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Affiliation(s)
- Ulf J. Eriksson
- CONTACT Ulf J. Eriksson Department of Medical Cell Biology, Uppsala University, Biomedical Center, PO Box 571, SE-751 23 Uppsala, Sweden
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40
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Fong KSK, Hufnagel RB, Khadka VS, Corley MJ, Maunakea AK, Fogelgren B, Ahmed ZM, Lozanoff S. A mutation in the tuft mouse disrupts TET1 activity and alters the expression of genes that are crucial for neural tube closure. Dis Model Mech 2016; 9:585-96. [PMID: 26989192 PMCID: PMC4892663 DOI: 10.1242/dmm.024109] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 03/09/2016] [Indexed: 01/19/2023] Open
Abstract
Genetic variations affecting neural tube closure along the head result in malformations of the face and brain. Neural tube defects (NTDs) are among the most common birth defects in humans. We previously reported a mouse mutant called tuft that arose spontaneously in our wild-type 3H1 colony. Adult tuft mice present midline craniofacial malformations with or without an anterior cephalocele. In addition, affected embryos presented neural tube closure defects resulting in insufficient closure of the anterior neuropore or exencephaly. Here, through whole-genome sequencing, we identified a nonsense mutation in the Tet1 gene, which encodes a methylcytosine dioxygenase (TET1), co-segregating with the tuft phenotype. This mutation resulted in premature termination that disrupts the catalytic domain that is involved in the demethylation of cytosine. We detected a significant loss of TET enzyme activity in the heads of tuft embryos that were homozygous for the mutation and had NTDs. RNA-Seq transcriptome analysis indicated that multiple gene pathways associated with neural tube closure were dysregulated in tuft embryo heads. Among them, the expressions of Cecr2, Epha7 and Grhl2 were significantly reduced in some embryos presenting neural tube closure defects, whereas one or more components of the non-canonical WNT signaling pathway mediating planar cell polarity and convergent extension were affected in others. We further show that the recombinant mutant TET1 protein was capable of entering the nucleus and affected the expression of endogenous Grhl2 in IMCD-3 (inner medullary collecting duct) cells. These results indicate that TET1 is an epigenetic determinant for regulating genes that are crucial to closure of the anterior neural tube and its mutation has implications to craniofacial development, as presented by the tuft mouse. Summary: We propose an epigenetic mechanism establishing the regulation of genes that are crucial for neural tube closure. This mechanism could be a novel target for resolving such birth defects and associated disorders.
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Affiliation(s)
- Keith S K Fong
- Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI 96813, USA
| | - Robert B Hufnagel
- Department of Pediatrics, Division of Human Genetics, Cincinnati Children's Hospital, College of Medicine, University of Cincinnati, 3333 Burnet Ave, ML 7003, Cincinnati, OH 45229, USA Unit on Pediatric, Development & Genetic Ophthalmology, Ophthalmic Genetics and Visual Function Branch, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Vedbar S Khadka
- Office of Biostatistics and Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI 96813, USA
| | - Michael J Corley
- Epigenomics Research Program, Department of Native Hawaiian Health, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI 96813, USA
| | - Alika K Maunakea
- Epigenomics Research Program, Department of Native Hawaiian Health, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI 96813, USA
| | - Ben Fogelgren
- Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI 96813, USA
| | - Zubair M Ahmed
- Department of Pediatrics, Division of Human Genetics, Cincinnati Children's Hospital, College of Medicine, University of Cincinnati, 3333 Burnet Ave, ML 7003, Cincinnati, OH 45229, USA Department of Otorhinolaryngology Head and Neck Surgery, School of Medicine, University of Maryland, BioPark Bldg1, 800 West Baltimore Street, Room 404, Baltimore, MD 21201, USA
| | - Scott Lozanoff
- Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI 96813, USA
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Gu H, Yu J, Dong D, Zhou Q, Wang JY, Fang S, Yang P. High Glucose-Repressed CITED2 Expression Through miR-200b Triggers the Unfolded Protein Response and Endoplasmic Reticulum Stress. Diabetes 2016; 65:149-63. [PMID: 26450995 PMCID: PMC4686950 DOI: 10.2337/db15-0108] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 10/05/2015] [Indexed: 12/20/2022]
Abstract
High glucose in vivo and in vitro induces neural tube defects (NTDs). CITED2 (CBP/p300-interacting transactivator with ED-rich tail 2) is essential for neural tube closure. We explored the regulatory mechanism underlying CITED2 expression and its relationship with miRNA and endoplasmic reticulum (ER) stress. miR-200b levels were increased by maternal diabetes or high glucose in vitro, and this increase was abrogated by transgenic overexpression of superoxide dismutase 1 (SOD1) or an SOD1 mimetic. CITED2 was the target of miR-200b and was downregulated by high glucose. Two miR-200b binding sites in the 3'-untranslated region of the CITED2 mRNA were required for inhibiting CITED2 expression. The miR-200b mimic and a CITED2 knockdown mimicked the stimulative effect of high glucose on unfolded protein response (UPR) and ER stress, whereas the miR-200b inhibitor and CITED2 overexpression abolished high glucose-induced UPR signaling, ER stress, and apoptosis. The ER stress inhibitor, 4-phenylbutyrate, blocked CITED2 knockdown-induced apoptosis. Furthermore, the miR-200b inhibitor reversed high glucose-induced CITED2 downregulation, ER stress, and NTDs in cultured embryos. Thus, we showed a novel function of miR-200b and CITED2 in high glucose-induced UPR and ER stress, suggesting that miR-200b and CITED2 are critical for ER homeostasis and NTD formation in the developing embryo.
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Affiliation(s)
- Hui Gu
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Jingwen Yu
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Daoyin Dong
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Qun Zhou
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD
| | - Jian-Ying Wang
- Cell Biology Group, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Shengyun Fang
- Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD
| | - Peixin Yang
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD
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Dong D, Fu N, Yang P. MiR-17 Downregulation by High Glucose Stabilizes Thioredoxin-Interacting Protein and Removes Thioredoxin Inhibition on ASK1 Leading to Apoptosis. Toxicol Sci 2015; 150:84-96. [PMID: 26660634 DOI: 10.1093/toxsci/kfv313] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Pregestational diabetes significantly increases the risk of neural tube defects (NTDs). Maternal diabetes activates an Apoptosis Signal-regulating Kinase 1 (ASK1)-initiated pathway, which triggers neural stem cell apoptosis of the developing neuroepithelium leading to NTD formation. How high glucose of diabetes activates ASK1 is still unclear. In this study, we investigated the mechanism underlying high glucose-induced ASK1 activation. High glucose suppressed miR-17 expression, which led to an increase in its target gene Txnip (Thioredoxin-interacting protein). High glucose-increased Txnip enhanced its binding to the ASK1 inhibitor, thioredoxin (Trx), and thereby sequestered Trx from the Trx-ASK1 complex. High glucose-induced ASK1 activation and consequent apoptosis were abrogated by either the miR-17 mimic or Txnip siRNA knockdown. In contrast, the miR-17 inhibitor or Txnip ectopic overexpression mimicked the stimulative effect of high glucose on ASK1 and apoptosis. Thus, our study demonstrated that miR-17 repression mediates the pro-apoptotic effect of high glucose, and revealed a new mechanism underlying ASK1 activation, in which decreased miR-17 removes Trx inhibition on ASK1 through Txnip.
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Affiliation(s)
- Daoyin Dong
- *Department of Obstetrics, Gynecology and Reproductive Sciences
| | - Noah Fu
- *Department of Obstetrics, Gynecology and Reproductive Sciences
| | - Peixin Yang
- *Department of Obstetrics, Gynecology and Reproductive Sciences; Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201
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43
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Novel Mode of Defective Neural Tube Closure in the Non-Obese Diabetic (NOD) Mouse Strain. Sci Rep 2015; 5:16917. [PMID: 26593875 PMCID: PMC4655353 DOI: 10.1038/srep16917] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 10/21/2015] [Indexed: 11/08/2022] Open
Abstract
Failure to close the neural tube results in birth defects, with severity ranging from spina bifida to lethal anencephaly. Few genetic risk factors for neural tube defects are known in humans, highlighting the critical role of environmental risk factors, such as maternal diabetes. Yet, it is not well understood how altered maternal metabolism interferes with embryonic development, and with neurulation in particular. We present evidence from two independent mouse models of diabetic pregnancy that identifies impaired migration of nascent mesodermal cells in the primitive streak as the morphogenetic basis underlying the pathogenesis of neural tube defects. We conclude that perturbed gastrulation not only explains the neurulation defects, but also provides a unifying etiology for the broad spectrum of congenital malformations in diabetic pregnancies.
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44
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Wang F, Weng H, Quon MJ, Yu J, Wang JY, Hueber AO, Yang P. Dominant negative FADD dissipates the proapoptotic signalosome of the unfolded protein response in diabetic embryopathy. Am J Physiol Endocrinol Metab 2015; 309:E861-73. [PMID: 26419589 PMCID: PMC4652069 DOI: 10.1152/ajpendo.00215.2015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 09/22/2015] [Indexed: 01/01/2023]
Abstract
Endoplasmic reticulum (ER) stress and caspase 8-dependent apoptosis are two interlinked causal events in maternal diabetes-induced neural tube defects (NTDs). The inositol-requiring enzyme 1α (IRE1α) signalosome mediates the proapoptotic effect of ER stress. Diabetes increases tumor necrosis factor receptor type 1R-associated death domain (TRADD) expression. Here, we revealed two new unfolded protein response (UPR) regulators, TRADD and Fas-associated protein with death domain (FADD). TRADD interacted with both the IRE1α-TRAF2-ASK1 complex and FADD. In vivo overexpression of a FADD dominant negative (FADD-DN) mutant lacking the death effector domain disrupted diabetes-induced IRE1α signalosome and suppressed ER stress and caspase 8-dependent apoptosis, leading to NTD prevention. FADD-DN abrogated ER stress markers and blocked the JNK1/2-ASK1 pathway. Diabetes-induced mitochondrial translocation of proapoptotic Bcl-2 members mitochondrial dysfunction and caspase cleavage were also alleviated by FADD-DN. In vitro TRADD overexpression triggered UPR and ER stress before manifestation of caspase 3 and caspase 8 cleavage and apoptosis. FADD-DN overexpression repressed high glucose- or TRADD overexpression-induced IRE1α phosphorylation, its downstream proapoptotic kinase activation and endonuclease activities, and apoptosis. FADD-DN also attenuated tunicamycin-induced UPR and ER stress. These findings suggest that TRADD participates in the IRE1α signalosome and induces UPR and ER stress and that the association between TRADD and FADD is essential for diabetes- or high glucose-induced UPR and ER stress.
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Affiliation(s)
- Fang Wang
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | - Hongbo Weng
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | | | - Jingwen Yu
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | | | - Anne-Odile Hueber
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland; and
| | - Peixin Yang
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Institut de Biologie de Valrose, UMR CNRS 7277, UMR Institut National de la Sante et de la Recherche Medicale 1091, Université de Nice-Sophia-Antipolis, Nice, France
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Wu Y, Wang F, Fu M, Wang C, Quon MJ, Yang P. Cellular Stress, Excessive Apoptosis, and the Effect of Metformin in a Mouse Model of Type 2 Diabetic Embryopathy. Diabetes 2015; 64:2526-36. [PMID: 25720389 PMCID: PMC4477360 DOI: 10.2337/db14-1683] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 02/22/2015] [Indexed: 12/15/2022]
Abstract
Increasing prevalence of type 2 diabetes in women of childbearing age has led to a higher incidence of diabetes-associated birth defects. We established a model of type 2 diabetic embryopathy by feeding 4-week-old female mice a high-fat diet (HFD) (60% fat). After 15 weeks on HFD, the mice showed characteristics of type 2 diabetes mellitus (DM) and were mated with lean male mice. During pregnancy, control dams fed a normal diet (10% fat) were maintained on either normal diet or HFD, serving as a control group with elevated circulating free fatty acids. DM dams produced offspring at a rate of 11.3% for neural tube defect (NTD) formation, whereas no embryos in the control groups developed NTDs. Elevated markers of oxidative stress, endoplasmic reticulum stress, caspase activation, and neuroepithelial cell apoptosis (causal events in type 1 diabetic embryopathy) were observed in embryos of DM dams. DM dams treated with 200 mg/kg metformin in drinking water ameliorated fasting hyperglycemia, glucose intolerance, and insulin resistance with consequent reduction of cellular stress, apoptosis, and NTDs in their embryos. We conclude that cellular stress and apoptosis occur and that metformin effectively reduces type 2 diabetic embryopathy in a useful rodent model.
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Affiliation(s)
- Yanqing Wu
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Fang Wang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Mao Fu
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - Cheng Wang
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE
| | - Michael J Quon
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - Peixin Yang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD
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Ornoy A, Reece EA, Pavlinkova G, Kappen C, Miller RK. Effect of maternal diabetes on the embryo, fetus, and children: congenital anomalies, genetic and epigenetic changes and developmental outcomes. ACTA ACUST UNITED AC 2015; 105:53-72. [PMID: 25783684 DOI: 10.1002/bdrc.21090] [Citation(s) in RCA: 179] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Pregestational and gestational diabetes mellitus (PGDM; GDM) are significant health concerns because they are associated with an increased rate of malformations and maternal health complications. METHODS We reviewed the data that help us to understand the effects of diabetes in pregnancy. RESULTS Diabetic embryopathy can affect any developing organ system, but cardiovascular and neural tube defects are among the most frequent anomalies. Other complications include preeclampsia, preterm delivery, fetal growth abnormalities, and perinatal mortality. Neurodevelopmental studies on offspring of mothers with diabetes demonstrated increased rate of Gross and Fine motor abnormalities, of Attention Deficit Hyperactivity Disorder, learning difficulties, and possibly also Autism Spectrum Disorder. The mechanisms underlying the effects of maternal hyperglycemia on the developing fetus may involve increased oxidative stress, hypoxia, apoptosis, and epigenetic changes. Evidence for epigenetic changes are the following: not all progeny are affected and not to the same extent; maternal diet may influence pregnancy outcomes; and maternal diabetes alters embryonic transcriptional profiles and increases the variation between transcriptomic profiles as a result of altered gene regulation. Research in animal models has revealed that maternal hyperglycemia is a teratogen, and has helped uncover potential therapeutic targets which, when blocked, can mitigate or ameliorate the negative effects of diabetes on the developing fetus. CONCLUSIONS Tight metabolic control, surveillance, and labor management remain the cornerstone of care for pregnant women with diabetes, but advances in the field indicate that new treatments to protect the mother and baby are not far from becoming clinical realities.
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Affiliation(s)
- Asher Ornoy
- Department of Medical Neurobiology, Laboratory of Teratology, Hebrew University Hadassah Medical School, Jerusalem, Israel
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Wang F, Wu Y, Gu H, Reece EA, Fang S, Gabbay-Benziv R, Aberdeen G, Yang P. Ask1 gene deletion blocks maternal diabetes-induced endoplasmic reticulum stress in the developing embryo by disrupting the unfolded protein response signalosome. Diabetes 2015; 64:973-88. [PMID: 25249581 PMCID: PMC4338585 DOI: 10.2337/db14-0409] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Apoptosis signal-regulating kinase 1 (ASK1) is activated by various stresses. The link between ASK1 activation and endoplasmic reticulum (ER) stress, two causal events in diabetic embryopathy, has not been determined. We sought to investigate whether ASK1 is involved in the unfolded protein response (UPR) that leads to ER stress. Deleting Ask1 abrogated diabetes-induced UPR by suppressing phosphorylation of inositol-requiring enzyme 1α (IRE1α), and double-stranded RNA-activated protein kinase (PKR)-like ER kinase (PERK) blocked the mitochondrial translocation of proapoptotic Bcl-2 members and ER stress. ASK1 participated in the IRE1α signalosome, and removing ASK1 abrogated the proapoptotic kinase activity of IRE1α. Ask1 deletion suppressed diabetes-induced IRE1α endoriboneclease activities, which led to X-box binding protein 1 mRNA cleavage, an ER stress marker, decreased expression of microRNAs, and increased expression of a miR-17 target, thioredoxin-interacting protein (Txnip), a thioredoxin binding protein, which enhanced ASK1 activation by disrupting the thioredoxin-ASK1 complexes. ASK1 is essential for the assembly and function of the IRE1α signalosome, which forms a positive feedback loop with ASK1 through Txnip. ASK1 knockdown in C17.2 neural stem cells diminished high glucose- or tunicamycin-induced IRE1α activation, which further supports our hypothesis that ASK1 plays a causal role in diabetes-induced ER stress and apoptosis.
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Affiliation(s)
- Fang Wang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Yanqing Wu
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Hui Gu
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - E Albert Reece
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD
| | - Shengyun Fang
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD Department of Physiology, University of Maryland School of Medicine, Baltimore, MD
| | - Rinat Gabbay-Benziv
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Graham Aberdeen
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD
| | - Peixin Yang
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD
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Hanaei S, Nejat F, Mortazavi A, Habibi Z, Esmaeili A, El Khashab M. Identical twins with lumbosacral lipomyelomeningocele. J Neurosurg Pediatr 2015; 15:92-5. [PMID: 25396701 DOI: 10.3171/2014.10.peds1494] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Lipomyelomeningocele, a congenital spine defect, is presented as skin-covered lipomatous tissue that attaches to the cord in different ways according to its subtypes. Unlike other types of neural tube defects, the exact cause of this birth defect has not been confirmed yet, but it is proposed to be a multifactorial disease with involvement of both genetic and environmental factors. The authors describe identical twins with lipomyelomeningocele of the same subtype and location without any familial history of similar abnormality. Therefore, the same genetic and/or environmental risk factors could have played a part in their condition.
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Affiliation(s)
- Sara Hanaei
- Department of Neurosurgery, Children's Hospital Medical Center, Tehran University of Medical Sciences
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TALEBIAN A, SOLTANI B, SEHAT M, ZAHEDI A, NOORIAN A, TALEBIAN M. Incidence and Risk Factors of Neural Tube Defects in Kashan, Central Iran. IRANIAN JOURNAL OF CHILD NEUROLOGY 2015; 9:50-6. [PMID: 26401153 PMCID: PMC4577698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 12/22/2014] [Accepted: 01/25/2015] [Indexed: 11/03/2022]
Abstract
OBJECTIVE Neural tube defects (NTDs) are the most common congenital defects of central nervous system due to neural tube closure deficit during the third and fourth weeks of gestational age. Our study was performed to detect the incidence and risk factors of NTDs in Kashan, center of Iran. MATERIAL & METHODS This case-control study was done on all pregnancies with NTD affected neonates (n=91) and 209 pregnancies with normal neonates from February 2007 to December 2012 in three hospitals in Kashan, center of Iran. Annual and the mean incidence of NTDs were calculated. Risk factors including neonatal gender, maternal age, gravidity, maternal abortion history, maternal gestational diabetes (GDM), folic acid use, familial marriage, maternal body mass index (BMI), birth season and family history of NTDs were evaluated by interview with mothers. Univariate and multivariate logistic regression were used to analyze the risk factors. RESULTS The mean incidence of NTDs was 2.33 per 1000 births. The multivariate analysis indicated that maternal history of abortion (OR: 4.9, CI: 1.9-12.8), and maternal obesity (OR: 5.4, CI: 1.3-21.8) were significantly associated with NTDs. CONCLUSION Maternal history of abortion and BMI were the major risk factors of NTDs.
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Affiliation(s)
- Ahmad TALEBIAN
- Department of Pediatrics, Kashan University of Medical Sciences, Kashan, Iran
| | - Babak SOLTANI
- Department of Pediatrics, Kashan University of Medical Sciences, Kashan, Iran
| | - Mojtaba SEHAT
- Department of Community Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Abolfazl ZAHEDI
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Akram NOORIAN
- Non-Communicable Pediatric Diseases Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Motahhareh TALEBIAN
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
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Wilde JJ, Petersen JR, Niswander L. Genetic, epigenetic, and environmental contributions to neural tube closure. Annu Rev Genet 2014; 48:583-611. [PMID: 25292356 DOI: 10.1146/annurev-genet-120213-092208] [Citation(s) in RCA: 143] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The formation of the embryonic brain and spinal cord begins as the neural plate bends to form the neural folds, which meet and adhere to close the neural tube. The neural ectoderm and surrounding tissues also coordinate proliferation, differentiation, and patterning. This highly orchestrated process is susceptible to disruption, leading to neural tube defects (NTDs), a common birth defect. Here, we highlight genetic and epigenetic contributions to neural tube closure. We describe an online database we created as a resource for researchers, geneticists, and clinicians. Neural tube closure is sensitive to environmental influences, and we discuss disruptive causes, preventative measures, and possible mechanisms. New technologies will move beyond candidate genes in small cohort studies toward unbiased discoveries in sporadic NTD cases. This will uncover the genetic complexity of NTDs and critical gene-gene interactions. Animal models can reveal the causative nature of genetic variants, the genetic interrelationships, and the mechanisms underlying environmental influences.
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Affiliation(s)
- Jonathan J Wilde
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Children's Hospital Colorado, Aurora, Colorado 80045;
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