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Casey-Clyde T, Liu SJ, Serrano JAC, Teng C, Jang YG, Vasudevan HN, Bush JO, Raleigh DR. Eed controls craniofacial osteoblast differentiation and mesenchymal proliferation from the neural crest. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.13.584903. [PMID: 38558995 PMCID: PMC10979956 DOI: 10.1101/2024.03.13.584903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The histone methyltransferase Polycomb repressive complex 2 (PRC2) is required for specification of the neural crest, and mis-regulation of neural crest development can cause severe congenital malformations. PRC2 is necessary for neural crest induction, but the embryonic, cellular, and molecular consequences of PRC2 activity after neural crest induction are incompletely understood. Here we show that Eed, a core subunit of PRC2, is required for craniofacial osteoblast differentiation and mesenchymal proliferation after induction of the neural crest. Integrating mouse genetics with single-cell RNA sequencing, our results reveal that conditional knockout of Eed after neural crest cell induction causes severe craniofacial hypoplasia, impaired craniofacial osteogenesis, and attenuated craniofacial mesenchymal cell proliferation that is first evident in post-migratory neural crest cell populations. We show that Eed drives mesenchymal differentiation and proliferation in vivo and in primary craniofacial cell cultures by regulating diverse transcription factor programs that are required for specification of post-migratory neural crest cells. These data enhance understanding of epigenetic mechanisms that underlie craniofacial development, and shed light on the embryonic, cellular, and molecular drivers of rare congenital syndromes in humans.
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Affiliation(s)
- Tim Casey-Clyde
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA
- Department of Neurosurgery, University of California San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California San Francisco, San Francisco, CA, USA
| | - S John Liu
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA
- Department of Neurosurgery, University of California San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California San Francisco, San Francisco, CA, USA
| | - Juan Antonio Camara Serrano
- Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, USA
| | - Camilla Teng
- Department of Cell and Tissue Biology, University of California San Francisco, San Francisco, CA, USA
| | - Yoon-Gu Jang
- Department of Cell and Tissue Biology, University of California San Francisco, San Francisco, CA, USA
| | - Harish N Vasudevan
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA
- Department of Neurosurgery, University of California San Francisco, San Francisco, CA, USA
| | - Jeffrey O Bush
- Department of Cell and Tissue Biology, University of California San Francisco, San Francisco, CA, USA
| | - David R Raleigh
- Department of Radiation Oncology, University of California San Francisco, San Francisco, CA, USA
- Department of Neurosurgery, University of California San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California San Francisco, San Francisco, CA, USA
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2
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Dasgupta MN, Kaplinski MA, Reddy CD, Collins RT. Patterns of Aortic Dilation in Tetralogy of Fallot: An Analysis of 100 Fetal Echocardiograms Compared With Matched Controls. J Am Heart Assoc 2023; 12:e030083. [PMID: 37929767 PMCID: PMC10727408 DOI: 10.1161/jaha.123.030083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 10/09/2023] [Indexed: 11/07/2023]
Abstract
Background Although aortic dilation is common in tetralogy of Fallot (TOF), its progression and risk of dissection are not well understood. The mechanism of dilation is primarily attributed to increased flow in utero; an alternative is unequal septation of the truncus arteriosus resulting in a larger aorta and inherently hypoplastic pulmonary artery (PA). If the latter is true, we hypothesize the aorta to PA ratio in TOF is stable throughout gestation, and sums of great artery dimensions are similar to controls. Methods and Results We performed a single-center retrospective study of fetuses with TOF (2014-2020) and matched controls. We compared sums of diameters, circumferences, and cross-sectional areas of the aorta and PA and evaluated the aorta to PA ratio across gestation in 2 TOF subtypes: pulmonary stenosis and atresia (TOF-PA). There were 100 echocardiograms with TOF (36% TOF-PA) with median gestational age of 31 weeks (interquartile range 26.5-34.4) and median maternal age of 34 years (interquartile range 30-37). There were no differences in sums of great artery dimensions between TOF-pulmonary stenosis and controls. In TOF-PA, sums were significantly lower than controls (P values <0.01). The aorta to PA ratio was stable throughout gestation (Pearson's r=0.08 [95% CI, -0.12 to 0.27], -0.06 [95% CI, -0.25 to 0.14]). Conclusions The aorta in fetal TOF is large but grows proportionally throughout gestation, with sums of great artery dimensions similar to controls. TOF-PA appears distinct from TOF-pulmonary stenosis (with smaller sums), warranting further investigation. In conclusion, our findings suggest an intrinsic developmental mechanism contributes to aortic dilation in TOF.
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Affiliation(s)
- Minnie N. Dasgupta
- Department of Pediatrics (Division of Cardiology)Stanford University School of MedicinePalo AltoCAUSA
| | - Michelle A. Kaplinski
- Department of Pediatrics (Division of Cardiology)Stanford University School of MedicinePalo AltoCAUSA
| | - Charitha D. Reddy
- Department of Pediatrics (Division of Cardiology)Stanford University School of MedicinePalo AltoCAUSA
| | - R. Thomas Collins
- Department of Pediatrics (Division of Cardiology)University of Kentucky College of MedicineLexingtonKYUSA
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3
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Papadopoulou A, Bountouvi E. Skeletal defects and bone metabolism in Noonan, Costello and cardio-facio-cutaneous syndromes. Front Endocrinol (Lausanne) 2023; 14:1231828. [PMID: 37964950 PMCID: PMC10641803 DOI: 10.3389/fendo.2023.1231828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 10/18/2023] [Indexed: 11/16/2023] Open
Abstract
Noonan, Costello and Cardio-facio-cutaneous syndromes belong to a group of disorders named RASopathies due to their common pathogenetic origin that lies on the Ras/MAPK signaling pathway. Genetics has eased, at least in part, the distinction of these entities as they are presented with overlapping clinical features which, sometimes, become more pronounced with age. Distinctive face, cardiac and skeletal defects are among the primary abnormalities seen in these patients. Skeletal dysmorphisms range from mild to severe and may include anterior chest wall anomalies, scoliosis, kyphosis, short stature, hand anomalies, muscle weakness, osteopenia or/and osteoporosis. Patients usually have increased serum concentrations of bone resorption markers, while markers of bone formation are within normal range. The causative molecular defects encompass the members of the Ras/MAPK/ERK pathway and the adjacent cascades, important for the maintenance of normal bone homeostasis. It has been suggested that modulation of the expression of specific molecules involved in the processes of bone remodeling may affect the osteogenic fate decision, potentially, bringing out new pharmaceutical targets. Currently, the laboratory imprint of bone metabolism on the clinical picture of the affected individuals is not clear, maybe due to the rarity of these syndromes, the small number of the recruited patients and the methods used for the description of their clinical and biochemical profiles.
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Affiliation(s)
- Anna Papadopoulou
- Laboratory of Clinical Biochemistry, University General Hospital “Attikon”, Medical School, National & Kapodistrian University of Athens, Athens, Greece
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4
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Zhang J, Ye C, Zhu Y, Wang J, Liu J. The Cell-Specific Role of SHP2 in Regulating Bone Homeostasis and Regeneration Niches. Int J Mol Sci 2023; 24:ijms24032202. [PMID: 36768520 PMCID: PMC9917188 DOI: 10.3390/ijms24032202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/25/2023] Open
Abstract
Src homology-2 containing protein tyrosine phosphatase (SHP2), encoded by PTPN11, has been proven to participate in bone-related diseases, such as Noonan syndrome (NS), metachondromatosis and osteoarthritis. However, the mechanisms of SHP2 in bone remodeling and homeostasis maintenance are complex and undemonstrated. The abnormal expression of SHP2 can influence the differentiation and maturation of osteoblasts, osteoclasts and chondrocytes. Meanwhile, SHP2 mutations can act on the immune system, vasculature and nervous system, which in turn affect bone development and remodeling. Signaling pathways regulated by SHP2, such as mitogen-activated protein kinase (MAPK), Indian hedgehog (IHH) and phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K)/protein kinase B (AKT), are also involved in the proliferation, differentiation and migration of bone functioning cells. This review summarizes the recent advances of SHP2 on osteogenesis-related cells and niche cells in the bone marrow microenvironment. The phenotypic features of SHP2 conditional knockout mice and underlying mechanisms are discussed. The prospective applications of the current agonists or inhibitors that target SHP2 in bone-related diseases are also described. Full clarification of the role of SHP2 in bone remodeling will shed new light on potential treatment for bone related diseases.
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Affiliation(s)
- Jie Zhang
- Laboratory for Aging Research, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chengxinyue Ye
- Laboratory for Aging Research, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yufan Zhu
- Laboratory for Aging Research, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Correspondence: (J.W.); (J.L.)
| | - Jin Liu
- Laboratory for Aging Research, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
- Correspondence: (J.W.); (J.L.)
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5
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Norcross RG, Abdelmoti L, Rouchka EC, Andreeva K, Tussey O, Landestoy D, Galperin E. Shoc2 controls ERK1/2-driven neural crest development by balancing components of the extracellular matrix. Dev Biol 2022; 492:156-171. [PMID: 36265687 PMCID: PMC10019579 DOI: 10.1016/j.ydbio.2022.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/29/2022] [Accepted: 10/10/2022] [Indexed: 02/02/2023]
Abstract
The extracellular signal-regulated kinase (ERK1/2) pathway is essential in embryonic development. The scaffold protein Shoc2 is a critical modulator of ERK1/2 signals, and mutations in the shoc2 gene lead to the human developmental disease known as Noonan-like syndrome with loose anagen hair (NSLH). The loss of Shoc2 and the shoc2 NSLH-causing mutations affect the tissues of neural crest (NC) origin. In this study, we utilized the zebrafish model to dissect the role of Shoc2-ERK1/2 signals in the development of NC. These studies established that the loss of Shoc2 significantly altered the expression of transcription factors regulating the specification and differentiation of NC cells. Using comparative transcriptome analysis of NC-derived cells from shoc2 CRISPR/Cas9 mutant larvae, we found that Shoc2-mediated signals regulate gene programs at several levels, including expression of genes coding for the proteins of extracellular matrix (ECM) and ECM regulators. Together, our results demonstrate that Shoc2 is an essential regulator of NC development. This study also indicates that disbalance in the turnover of the ECM may lead to the abnormalities found in NSLH patients.
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Affiliation(s)
- Rebecca G Norcross
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, 40536, USA
| | - Lina Abdelmoti
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, 40536, USA
| | - Eric C Rouchka
- Department of Biochemistry and Molecular Genetics, University of Louisville, Louisville, KY, 40292, USA; KY INBRE Bioinformatics Core, University of Louisville, Louisville, KY, 40292, USA
| | - Kalina Andreeva
- KY INBRE Bioinformatics Core, University of Louisville, Louisville, KY, 40292, USA; Department of Neuroscience Training, University of Louisville, Louisville, KY, 40292, USA; Department of Genetics, Stanford University, Palo Alto, CA, 94304, USA
| | - Olivia Tussey
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, 40536, USA
| | - Daileen Landestoy
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, 40536, USA
| | - Emilia Galperin
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, 40536, USA.
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6
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Yao S, Zhou X, Vona B, Fan L, Zhang C, Li D, Yuan H, Du Y, Ma L, Pan Y. Skeletal Class III Malocclusion Is Associated with ADAMTS2 Variants and Reduced Expression in a Familial Case. Int J Mol Sci 2022; 23:ijms231810673. [PMID: 36142585 PMCID: PMC9505033 DOI: 10.3390/ijms231810673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Skeletal Class III malocclusion with maxillary deficiency is a severe maxillofacial disease with unclear pathogenic mechanisms. We recruited a Han Chinese family who was clinically diagnosed with skeletal Class III malocclusion and maxillary deficiency. Using whole exome sequencing, a missense variant in ADAMTS2 (NM_014244: c.3506G>T: p.G1169V) was identified and predicted as deleterious by in silico tools. We also found ADAMTS2 variants associated with deficient maxillary development in a cohort. ADAMTS2 expression in HEK293 cells showed significant decrease due to the variant, which was also consistent in dental pulp stem cells from the proband and a healthy control. In the adamts2-knockdown zebrafish model, the length and width of the ethmoid plate, as well as the length of the palatoquadrate became significantly shorter than the control group (p < 0.001), while there was no significant difference in the length and width of the mandible. The expression of Sox3, which was required in early embryonic craniofacial development, was significantly downregulated in the adamts2-knockdown zebrafish embryos. Bioinformatic and cellular studies showed that the decreased expression of ADAMTS2 may inhibit downstream ErbB signaling pathway transduction and restrain subsequent osteogenesis in human adult mesenchymal stromal cells. Collectively, these data showed that ADAMTS2 (c.3506G>T: p.G1169V) may confer susceptibility to risk of skeletal Class III malocclusion with maxillary deficiency.
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Affiliation(s)
- Siyue Yao
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- The Affiliated Stomatology Hospital of Suzhou Vocational Health College, Suzhou 215000, China
| | - Xi Zhou
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
| | - Barbara Vona
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
- Institute for Auditory Neuroscience and Inner Ear Lab, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Liwen Fan
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
| | - Chengcheng Zhang
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
| | - Dandan Li
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
| | - Hua Yuan
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
| | - Yifei Du
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
| | - Lan Ma
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- Correspondence: (L.M.); (Y.P.); Tel.: +86-25-86862025 (L.M. & Y.P.); Fax: +86-25-86862823 (L.M. & Y.P.)
| | - Yongchu Pan
- Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing 210000, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing 210000, China
- Correspondence: (L.M.); (Y.P.); Tel.: +86-25-86862025 (L.M. & Y.P.); Fax: +86-25-86862823 (L.M. & Y.P.)
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7
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PTPN11 Gene Mutations and Its Association with the Risk of Congenital Heart Disease. DISEASE MARKERS 2022; 2022:8290779. [PMID: 35440950 PMCID: PMC9013483 DOI: 10.1155/2022/8290779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/14/2022] [Accepted: 03/18/2022] [Indexed: 12/24/2022]
Abstract
Congenital heart disease (CHD) is the most common congenital birth defect, with a prevalence of 8.98‰ of all live births in China. PTPN11 has been known to be closely involved in heart developments. In this research, we carried out whole-exome sequencing in nine CHD families and identified eight rare deleterious missense variants of PTPN11 gene in nine probands by stringently filtering criteria. Sanger sequencing of these probands and their unaffected familiar members revealed that six damaging variants were de novo in seven CHD families. Then, targeted sequencing was used to assess the PTPN11 exon variants in 672 sporadic CHD cases and 399 unrelated controls and identified 7 deleterious missense variants in 8 patients. Fisher's exact test reveals a significant association of PTPN11 variations with CHD (P = 0.0289). We observed the distribution of different subtypes in CHD patients with PTPN11 variants and found atrial septal defect (ASD) is a prominent phenotype (58.8%, 10/17). In vitro functional assays revealed that the predicted PTPN11 variants disturb RAS-mitogen-activated protein kinase signaling activity by influencing the phosphorylation level of pathway proteins and increasing the proliferation and migration abilities of cardiomyocytes to different extents. Our findings demonstrated that PTPN11 variants were associated with increased risk of CHD development and may be served as an important susceptible genetic event for CHD, especially the ASD subphenotype.
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8
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Friend or foe? Unraveling the complex roles of protein tyrosine phosphatases in cardiac disease and development. Cell Signal 2022; 93:110297. [PMID: 35259455 PMCID: PMC9038168 DOI: 10.1016/j.cellsig.2022.110297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 02/14/2022] [Accepted: 02/27/2022] [Indexed: 11/21/2022]
Abstract
Regulation of protein tyrosine phosphorylation is critical for most, if not all, fundamental cellular processes. However, we still do not fully understand the complex and tissue-specific roles of protein tyrosine phosphatases in the normal heart or in cardiac pathology. This review compares and contrasts the various roles of protein tyrosine phosphatases known to date in the context of cardiac disease and development. In particular, it will be considered how specific protein tyrosine phosphatases control cardiac hypertrophy and cardiomyocyte contractility, how protein tyrosine phosphatases contribute to or ameliorate injury induced by ischaemia / reperfusion or hypoxia / reoxygenation, and how protein tyrosine phosphatases are involved in normal heart development and congenital heart disease. This review delves into the newest developments and current challenges in the field, and highlights knowledge gaps and emerging opportunities for future research.
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9
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Cerrizuela S, Vega-Lopez GA, Méndez-Maldonado K, Velasco I, Aybar MJ. The crucial role of model systems in understanding the complexity of cell signaling in human neurocristopathies. WIREs Mech Dis 2022; 14:e1537. [PMID: 35023327 DOI: 10.1002/wsbm.1537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/26/2021] [Accepted: 08/30/2021] [Indexed: 11/07/2022]
Abstract
Animal models are useful to study the molecular, cellular, and morphogenetic mechanisms underlying normal and pathological development. Cell-based study models have emerged as an alternative approach to study many aspects of human embryonic development and disease. The neural crest (NC) is a transient, multipotent, and migratory embryonic cell population that generates a diverse group of cell types that arises during vertebrate development. The abnormal formation or development of the NC results in neurocristopathies (NCPs), which are characterized by a broad spectrum of functional and morphological alterations. The impaired molecular mechanisms that give rise to these multiphenotypic diseases are not entirely clear yet. This fact, added to the high incidence of these disorders in the newborn population, has led to the development of systematic approaches for their understanding. In this article, we have systematically reviewed the ways in which experimentation with different animal and cell model systems has improved our knowledge of NCPs, and how these advances might contribute to the development of better diagnostic and therapeutic tools for the treatment of these pathologies. This article is categorized under: Congenital Diseases > Genetics/Genomics/Epigenetics Congenital Diseases > Stem Cells and Development Congenital Diseases > Molecular and Cellular Physiology Neurological Diseases > Genetics/Genomics/Epigenetics.
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Affiliation(s)
- Santiago Cerrizuela
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina
| | - Guillermo A Vega-Lopez
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina.,Instituto de Biología "Dr. Francisco D. Barbieri", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Tucumán, Argentina
| | - Karla Méndez-Maldonado
- Instituto de Fisiología Celular - Neurociencias, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.,Departamento de Fisiología y Farmacología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Iván Velasco
- Instituto de Fisiología Celular - Neurociencias, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.,Laboratorio de Reprogramación Celular del Instituto de Fisiología Celular, UNAM en el Instituto Nacional de Neurología y Neurocirugía "Manuel Velasco Suárez", Ciudad de México, Mexico
| | - Manuel J Aybar
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina.,Instituto de Biología "Dr. Francisco D. Barbieri", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Tucumán, Argentina
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10
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Zhang Y, Lu W, Zhao Q, Chen J, Wang T, Ji J. The role of the protein tyrosine phosphatase SHP2 in ossification. Dev Dyn 2021; 251:748-758. [PMID: 34962674 DOI: 10.1002/dvdy.449] [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: 08/28/2020] [Revised: 12/09/2021] [Accepted: 12/21/2021] [Indexed: 12/16/2022] Open
Abstract
SHP2, encoded by the PTPN11 gene, participates in multiple cell functions including cell proliferation, movement, and differentiation. PTPN11 loss-of-function and gain-of-function mutations are both associated with diseases, such as Noonan syndrome, whose manifestations include bone defects, suggesting a crucial role for SHP2 in the skeleton. However, the exact mechanisms by which SHP2 regulates bone development remain unclear. This review focuses on the current understanding of the regulation of SHP2 and highlights the vital roles of SHP2 in skeletal development, especially its roles in ossification. Overall, a better understanding of the functions of SHP2 in ossification will provide a new avenue to treat-related skeletal diseases.
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Affiliation(s)
- Yuan Zhang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China.,Nanjing Key Laboratory, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China
| | - Wei Lu
- Department of Prosthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China
| | - Qing Zhao
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China.,Nanjing Key Laboratory, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China
| | - Jindong Chen
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China
| | - Tiancong Wang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China
| | - Jun Ji
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China.,Nanjing Key Laboratory, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, People's Republic of China
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11
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Yamamoto M, Abe H, Hirouchi H, Sato M, Murakami G, Rodríguez-Vázquez JF, Abe S. Development of the cartilaginous connecting apparatuses in the fetal sphenoid, with a focus on the alar process. PLoS One 2021; 16:e0251068. [PMID: 34252104 PMCID: PMC8274926 DOI: 10.1371/journal.pone.0251068] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 04/19/2021] [Indexed: 12/13/2022] Open
Abstract
The human fetal sphenoid is reported to have a cartilaginous connecting apparatus known as the alar process (AP), which connects the ala temporalis (AT) (angle of the greater wing of the sphenoid) to the basisphenoid (anlage of the sphenoid body). However, how the AP develops in humans is unclear. In addition, although the AP is a common structure of the mammalian chondrocranium, little is known about whether it is really a fundamental feature in mammals. This study examined the histological sections of 20 human embryos and fetuses from 6 to 14 weeks of development, of 20 mouse embryos from embryonic days 12-18, and of 4 rats embryos form embryonic days 17 and 20. In addition, we reconsidered the definition of the AP by comparing humans and rats with mice. In humans, the AP was continuous with the basisphenoid but was separated from the AT by a thick perichondrium. Then, the AP-AT connection had a key-and-keyhole structure. Unlike a joint, no cavitation developed in this connection. In mice, there was no boundary between the AT and the basisphenoid, indicating the absence of the AP in the mouse chondrocranium. In rats, the AP was, however, separated from the AT by a thick perichondrium. Therefore, the AP can be defined as follows: the AP is temporally separated from the AT by a thick perichondrium or a key-and-keyhole structure during the fetal period. This is the first study that confirms the absence of the alar process in the mice skull, and its presence in other mammals skull should be further investigated.
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Affiliation(s)
- Masahito Yamamoto
- Department of Anatomy, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Hiroaki Abe
- Department of Anatomy, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Hidetomo Hirouchi
- Department of Anatomy, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Masaki Sato
- Department of Biology, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
| | - Gen Murakami
- Department of Anatomy, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
- Division of Internal Medicine, Jikou-kai Clinic of Home Visits, Sapporo, Japan
| | | | - Shinichi Abe
- Department of Anatomy, Tokyo Dental College, Chiyoda-ku, Tokyo, Japan
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Laberthonnière C, Novoa-del-Toro EM, Chevalier R, Broucqsault N, Rao VV, Trani JP, Nguyen K, Xue S, Reversade B, Robin JD, Baudot A, Magdinier F. AKT Signaling Modifies the Balance between Cell Proliferation and Migration in Neural Crest Cells from Patients Affected with Bosma Arhinia and Microphthalmia Syndrome. Biomedicines 2021; 9:751. [PMID: 34209568 PMCID: PMC8301469 DOI: 10.3390/biomedicines9070751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/09/2021] [Accepted: 06/18/2021] [Indexed: 11/16/2022] Open
Abstract
Over the recent years, the SMCHD1 (Structural Maintenance of Chromosome flexible Hinge Domain Containing 1) chromatin-associated factor has triggered increasing interest after the identification of variants in three rare and unrelated diseases, type 2 Facio Scapulo Humeral Dystrophy (FSHD2), Bosma Arhinia and Microphthalmia Syndrome (BAMS), and the more recently isolated hypogonadotrophic hypogonadism (IHH) combined pituitary hormone deficiency (CPHD) and septo-optic dysplasia (SOD). However, it remains unclear why certain mutations lead to a specific muscle defect in FSHD while other are associated with severe congenital anomalies. To gain further insights into the specificity of SMCHD1 variants and identify pathways associated with the BAMS phenotype and related neural crest defects, we derived induced pluripotent stem cells from patients carrying a mutation in this gene. We differentiated these cells in neural crest stem cells and analyzed their transcriptome by RNA-Seq. Besides classical differential expression analyses, we analyzed our data using MOGAMUN, an algorithm allowing the extraction of active modules by integrating differential expression data with biological networks. We found that in BAMS neural crest cells, all subnetworks that are associated with differentially expressed genes converge toward a predominant role for AKT signaling in the control of the cell proliferation-migration balance. Our findings provide further insights into the distinct mechanism by which defects in neural crest migration might contribute to the craniofacial anomalies in BAMS.
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Affiliation(s)
- Camille Laberthonnière
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
| | - Elva Maria Novoa-del-Toro
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
| | - Raphaël Chevalier
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
| | - Natacha Broucqsault
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
| | - Vanitha Venkoba Rao
- Department of Biological Sciences, National University of Singapore, Singapore 117558, Singapore; (V.V.R.); (S.X.)
| | - Jean Philippe Trani
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
| | - Karine Nguyen
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
- Département de Génétique Médicale, Hôpital Timone Enfants, 13005 Marseille, France
| | - Shifeng Xue
- Department of Biological Sciences, National University of Singapore, Singapore 117558, Singapore; (V.V.R.); (S.X.)
- Institute of Molecular and Cell Biology, A*STAR, Singapore 138632, Singapore;
| | - Bruno Reversade
- Institute of Molecular and Cell Biology, A*STAR, Singapore 138632, Singapore;
- Department of Paediatrics, National University of Singapore, Singapore 138632, Singapore
- Medical Genetics Department, Koç University School of Medicine (KUSOM), Istanbul 34010, Turkey
- Academic Medical Center (AMC), Reproductive Biology Laboratory, 1012 Amsterdam-Zuidoost, The Netherlands
| | - Jérôme D. Robin
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
| | - Anais Baudot
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
| | - Frédérique Magdinier
- Aix-Marseille Univ-INSERM, MMG, 13005 Marseille, France; (C.L.); (E.M.N.-d.-T.); (R.C.); (N.B.); (J.P.T.); (K.N.); (J.D.R.); (A.B.)
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Protein Tyrosine Phosphatase SHP2 Suppresses Host Innate Immunity against Influenza A Virus by Regulating EGFR-Mediated Signaling. J Virol 2021; 95:JVI.02001-20. [PMID: 33361428 DOI: 10.1128/jvi.02001-20] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/13/2020] [Indexed: 12/14/2022] Open
Abstract
Influenza A virus (IAV) is a highly contagious pathogen, causing acute respiratory illnesses in human beings and animals and frequently giving rise to epidemic outbreaks. Evasion by IAV of host immunity facilitates viral replication and spread, which can be initiated through various mechanisms, including epidermal growth factor receptor (EGFR) activation. However, how EGFR mediates the suppression of antiviral systems remains unclear. Here, we examined host innate immune responses and their relevant signaling to EGFR upon IAV infection. IAV was found to induce the phosphorylation of EGFR and extracellular signal-regulated kinase (ERK) at an early stage of infection. Inhibition of EGFR or ERK suppressed the viral replication but increased the expression of type I and type III interferons (IFNs) and interferon-stimulated genes (ISGs), supporting the idea that IAV escapes from antiviral innate immunity by activating EGFR/ERK signaling. Meanwhile, IAV infection also induced the activation of Src homology region 2-containing protein tyrosine phosphatase 2 (SHP2). Pharmacological inhibition or small interfering RNA (siRNA)-based silencing of SHP2 enhanced the IFN-dependent antiviral activity and reduced virion production. Furthermore, knockdown of SHP2 attenuated the EGFR-mediated ERK phosphorylation triggered by viral infection or EGF stimulation. Conversely, ectopic expression of constitutively active SHP2 noticeably promoted ERK activation and viral replication, concomitant with diminished immune function. Altogether, the results indicate that SHP2 is crucial for IAV-induced activation of the EGFR/ERK pathway to suppress host antiviral responses.IMPORTANCE Viral immune evasion is the most important strategy whereby viruses evolve for their survival. This work shows that influenza A virus (IAV) suppressed the antiviral innate immunity through downregulation of IFNs and ISGs by activating EGFR/ERK signaling. Meanwhile, IAV also induced the activation of protein tyrosine phosphatase SHP2, which was found to be responsible for modulating the EGFR-mediated ERK activity and subsequent antiviral effectiveness both in vitro and in vivo The results suggest that SHP2 is a key signal transducer between EGFR and ERK and plays a crucial role in suppressing host innate immunity during IAV infection. The finding enhances our understanding of influenza immune evasion and provides a new therapeutic approach to viral infection.
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ERK signalling: a master regulator of cell behaviour, life and fate. Nat Rev Mol Cell Biol 2020; 21:607-632. [PMID: 32576977 DOI: 10.1038/s41580-020-0255-7] [Citation(s) in RCA: 494] [Impact Index Per Article: 123.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2020] [Indexed: 12/13/2022]
Abstract
The proteins extracellular signal-regulated kinase 1 (ERK1) and ERK2 are the downstream components of a phosphorelay pathway that conveys growth and mitogenic signals largely channelled by the small RAS GTPases. By phosphorylating widely diverse substrates, ERK proteins govern a variety of evolutionarily conserved cellular processes in metazoans, the dysregulation of which contributes to the cause of distinct human diseases. The mechanisms underlying the regulation of ERK1 and ERK2, their mode of action and their impact on the development and homeostasis of various organisms have been the focus of much attention for nearly three decades. In this Review, we discuss the current understanding of this important class of kinases. We begin with a brief overview of the structure, regulation, substrate recognition and subcellular localization of ERK1 and ERK2. We then systematically discuss how ERK signalling regulates six fundamental cellular processes in response to extracellular cues. These processes are cell proliferation, cell survival, cell growth, cell metabolism, cell migration and cell differentiation.
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Lutz JC, Nicot R, Schlund M, Schaefer E, Bornert F, Fioretti F, Ferri J. Dental and maxillofacial features of Noonan Syndrome: Case series of ten patients. J Craniomaxillofac Surg 2020; 48:242-250. [PMID: 32113883 DOI: 10.1016/j.jcms.2020.01.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 01/22/2020] [Accepted: 01/26/2020] [Indexed: 12/28/2022] Open
Abstract
Noonan syndrome (NS) is a relatively common congenital multiple-anomaly syndrome, resembling Turner syndrome, but without chromosomal anomaly. Besides the unusual facies, the maxillofacial and dental features of patients with NS are not well-summarized in the literature. The aim of this study was to describe these features and propose specific treatment guidelines for practitioners involved in oral and maxillofacial care. A retrospective multicentric study was conducted of 14 patients who were referred for NS screening. In total, 10 patients were found to carry a mutation involved in NS or NS-related disorders. Fifty percent of the mutations affected PTPN11. All patients presented with the typical extraoral features, such as macrocephaly, hypertelorism, ptosis, triangular face shape and ear dystrophy. Intraoral manifestations, including malocclusion (maxillary transversal deficiency, crossbite, anterior open-bite and class II malocclusion), dental anomalies (delayed eruption, agenesis and dystrophy, odontoma) and radiologic jaw lesions were identified in five out of 10 patients. These findings were searched in a review of the literature to obtain a comprehensive description of oral and maxillofacial features in patients with NS. The proposed treatment guidelines emphasize frequent coagulation anomalies that need to be considered prior to surgery. Early dental assessment and yearly follow-up with oral prophylaxis are recommended. Orthodontics and orthognathic surgery are also of primary importance in the management of NS patients.
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Affiliation(s)
- Jean-Christophe Lutz
- Oral and Maxillofacial Surgery Department, Strasbourg University Hospital, 1 avenue Molière, 67098, Strasbourg cedex, France; University of Strasbourg, Faculty of Medicine, 8 rue Kirschleger, 67000, Strasbourg, France; INSERM (French National Institute of Health and Medical Research), "Regenerative Nanomedicine" Laboratory, UMR 1260, Faculté de Médecine, FMTS, 67085, Strasbourg cedex, France.
| | - Romain Nicot
- Oral and Maxillofacial Surgery Department, Roger Salengro Hospital, Avenue du Professeur Emile Laine, 59037, Lille, France; Université Lille 2 Droit et Santé, 1 Pl. de Verdun, 59000, Lille, France; INSERM U1008, Controlled Drug Delivery Systems and Biomaterials, Faculté de Pharmacie, 3, rue du Professeur Laguesse, BP83, 59006, Lille Cedex, France
| | - Matthias Schlund
- Oral and Maxillofacial Surgery Department, Roger Salengro Hospital, Avenue du Professeur Emile Laine, 59037, Lille, France; Université Lille 2 Droit et Santé, 1 Pl. de Verdun, 59000, Lille, France
| | - Elise Schaefer
- University of Strasbourg, Faculty of Medicine, 8 rue Kirschleger, 67000, Strasbourg, France; Medical Genetics Department, Strasbourg University Hospital, 1 avenue Molière, 67098, Strasbourg cedex, France
| | - Fabien Bornert
- INSERM (French National Institute of Health and Medical Research), "Regenerative Nanomedicine" Laboratory, UMR 1260, Faculté de Médecine, FMTS, 67085, Strasbourg cedex, France; Department of Dentistry / Oral Medicine and Oral Surgery, Strasbourg University Hospital, 1 Place de l'Hôpital, 67091, Strasbourg cedex, France; University of Strasbourg, Faculty of Dentistry, 8 rue Sainte Elisabeth, 67000, Strasbourg, France
| | - Florence Fioretti
- INSERM (French National Institute of Health and Medical Research), "Regenerative Nanomedicine" Laboratory, UMR 1260, Faculté de Médecine, FMTS, 67085, Strasbourg cedex, France; Department of Dentistry / Oral Medicine and Oral Surgery, Strasbourg University Hospital, 1 Place de l'Hôpital, 67091, Strasbourg cedex, France; University of Strasbourg, Faculty of Dentistry, 8 rue Sainte Elisabeth, 67000, Strasbourg, France
| | - Joël Ferri
- Oral and Maxillofacial Surgery Department, Roger Salengro Hospital, Avenue du Professeur Emile Laine, 59037, Lille, France; Université Lille 2 Droit et Santé, 1 Pl. de Verdun, 59000, Lille, France; INSERM U1008, Controlled Drug Delivery Systems and Biomaterials, Faculté de Pharmacie, 3, rue du Professeur Laguesse, BP83, 59006, Lille Cedex, France
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Dinsmore CJ, Soriano P. MAPK and PI3K signaling: At the crossroads of neural crest development. Dev Biol 2018; 444 Suppl 1:S79-S97. [PMID: 29453943 PMCID: PMC6092260 DOI: 10.1016/j.ydbio.2018.02.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 02/06/2018] [Accepted: 02/06/2018] [Indexed: 02/08/2023]
Abstract
Receptor tyrosine kinase-mediated growth factor signaling is essential for proper formation and development of the neural crest. The many ligands and receptors implicated in these processes signal through relatively few downstream pathways, frequently converging on the MAPK and PI3K pathways. Despite decades of study, there is still considerable uncertainty about where and when these signaling pathways are required and how they elicit particular responses. This review summarizes our current understanding of growth factor-induced MAPK and PI3K signaling in the neural crest.
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Affiliation(s)
- Colin J Dinsmore
- Department of Cell, Developmental and Regenerative Biology, Tisch Cancer Institute, Icahn School of Medicine at Mt. Sinai, New York, NY 10029, USA
| | - Philippe Soriano
- Department of Cell, Developmental and Regenerative Biology, Tisch Cancer Institute, Icahn School of Medicine at Mt. Sinai, New York, NY 10029, USA.
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17
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Tajan M, Paccoud R, Branka S, Edouard T, Yart A. The RASopathy Family: Consequences of Germline Activation of the RAS/MAPK Pathway. Endocr Rev 2018; 39:676-700. [PMID: 29924299 DOI: 10.1210/er.2017-00232] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 06/13/2018] [Indexed: 12/13/2022]
Abstract
Noonan syndrome [NS; Mendelian Inheritance in Men (MIM) #163950] and related syndromes [Noonan syndrome with multiple lentigines (formerly called LEOPARD syndrome; MIM #151100), Noonan-like syndrome with loose anagen hair (MIM #607721), Costello syndrome (MIM #218040), cardio-facio-cutaneous syndrome (MIM #115150), type I neurofibromatosis (MIM #162200), and Legius syndrome (MIM #611431)] are a group of related genetic disorders associated with distinctive facial features, cardiopathies, growth and skeletal abnormalities, developmental delay/mental retardation, and tumor predisposition. NS was clinically described more than 50 years ago, and disease genes have been identified throughout the last 3 decades, providing a molecular basis to better understand their physiopathology and identify targets for therapeutic strategies. Most of these genes encode proteins belonging to or regulating the so-called RAS/MAPK signaling pathway, so these syndromes have been gathered under the name RASopathies. In this review, we provide a clinical overview of RASopathies and an update on their genetics. We then focus on the functional and pathophysiological effects of RASopathy-causing mutations and discuss therapeutic perspectives and future directions.
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Affiliation(s)
- Mylène Tajan
- INSERM UMR 1048, Institute of Cardiovascular and Metabolic Diseases (I2MC), University of Toulouse Paul Sabatier, Toulouse, France
| | - Romain Paccoud
- INSERM UMR 1048, Institute of Cardiovascular and Metabolic Diseases (I2MC), University of Toulouse Paul Sabatier, Toulouse, France
| | - Sophie Branka
- INSERM UMR 1048, Institute of Cardiovascular and Metabolic Diseases (I2MC), University of Toulouse Paul Sabatier, Toulouse, France
| | - Thomas Edouard
- Endocrine, Bone Diseases, and Genetics Unit, Children's Hospital, Toulouse University Hospital, Toulouse, France
| | - Armelle Yart
- INSERM UMR 1048, Institute of Cardiovascular and Metabolic Diseases (I2MC), University of Toulouse Paul Sabatier, Toulouse, France
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Neurocristopathies: New insights 150 years after the neural crest discovery. Dev Biol 2018; 444 Suppl 1:S110-S143. [PMID: 29802835 DOI: 10.1016/j.ydbio.2018.05.013] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 05/16/2018] [Accepted: 05/17/2018] [Indexed: 12/12/2022]
Abstract
The neural crest (NC) is a transient, multipotent and migratory cell population that generates an astonishingly diverse array of cell types during vertebrate development. These cells, which originate from the ectoderm in a region lateral to the neural plate in the neural fold, give rise to neurons, glia, melanocytes, chondrocytes, smooth muscle cells, odontoblasts and neuroendocrine cells, among others. Neurocristopathies (NCP) are a class of pathologies occurring in vertebrates, especially in humans that result from the abnormal specification, migration, differentiation or death of neural crest cells during embryonic development. Various pigment, skin, thyroid and hearing disorders, craniofacial and heart abnormalities, malfunctions of the digestive tract and tumors can also be considered as neurocristopathies. In this review we revisit the current classification and propose a new way to classify NCP based on the embryonic origin of the affected tissues, on recent findings regarding the molecular mechanisms that drive NC formation, and on the increased complexity of current molecular embryology techniques.
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PD-1 is required to maintain stem cell properties in human dental pulp stem cells. Cell Death Differ 2018; 25:1350-1360. [PMID: 29472716 DOI: 10.1038/s41418-018-0077-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 01/19/2018] [Accepted: 01/26/2018] [Indexed: 01/09/2023] Open
Abstract
Programmed cell death-1 (PD-1) belongs to an inhibitory signaling pathway capable of maintaining central and peripheral immune tolerance. Blockage of PD-1 has been identified as a promising immunotherapeutic approach for cancer and chronic infectious diseases. However, it is unknown whether PD-1 pathway regulates stem cell function. It is generally believed that mesenchymal stem cells (MSCs) produce PD-1 ligand, but fail to express PD-1. In this study, we show that neural crest-derived MSCs from dental pulp (MSC-DP), but not MSCs from bone marrow, expressed PD-1. Knocking down PD-1 expression in MSC-DP results in a significantly reduced capacity for cell proliferation and accelerated multipotential differentiation. Mechanistically, we show that PD-1 regulates a SHP2/ERK/Notch cascade to maintain proliferation and a SHP2/ERK/β-catenin cascade to inhibit osteo-/odontogenic differentiation. This study indicates that PD-1 is a key surface molecule controlling cell proliferation and multipotential differentiation of MSC-DP. Through regulating PD-1/SHP2/ERK signaling, we can significantly improve the quality and quantity of culture-expanded MSC-DP for potential clinical therapies.
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Garg A, Bansal M, Gotoh N, Feng GS, Zhong J, Wang F, Kariminejad A, Brooks S, Zhang X. Alx4 relays sequential FGF signaling to induce lacrimal gland morphogenesis. PLoS Genet 2017; 13:e1007047. [PMID: 29028795 PMCID: PMC5656309 DOI: 10.1371/journal.pgen.1007047] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/25/2017] [Accepted: 09/28/2017] [Indexed: 11/18/2022] Open
Abstract
The sequential use of signaling pathways is essential for the guidance of pluripotent progenitors into diverse cell fates. Here, we show that Shp2 exclusively mediates FGF but not PDGF signaling in the neural crest to control lacrimal gland development. In addition to preventing p53-independent apoptosis and promoting the migration of Sox10-expressing neural crests, Shp2 is also required for expression of the homeodomain transcription factor Alx4, which directly controls Fgf10 expression in the periocular mesenchyme that is necessary for lacrimal gland induction. We show that Alx4 binds an Fgf10 intronic element conserved in terrestrial but not aquatic animals, underlying the evolutionary emergence of the lacrimal gland system in response to an airy environment. Inactivation of ALX4/Alx4 causes lacrimal gland aplasia in both human and mouse. These results reveal a key role of Alx4 in mediating FGF-Shp2-FGF signaling in the neural crest for lacrimal gland development. The dry eye disease caused by lacrimal gland dysgenesis is one of the most common ocular ailments. In this study, we show that Shp2 mediates the sequential use of FGF signaling in lacrimal gland development. Our study identifies Alx4 as a novel target of Shp2 signaling and a causal gene for lacrimal gland aplasia in humans. Given this result, there may also be a potential role for Alx4 in guiding pluripotent stem cells to produce lacrimal gland tissue. Finally, our data reveals an Alx4-Fgf10 regulatory unit broadly conserved in the diverse array of terrestrial animals from humans to reptiles, but not in aquatic animals such as amphibians and fish, which sheds light on how the lacrimal gland arose as an evolutionary innovation of terrestrial animals to adapt to their newfound exposure to an airy environment.
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Affiliation(s)
- Ankur Garg
- Departments of Ophthalmology, Pathology and Cell Biology, Columbia University, New York, NY, United States of America
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, United States of America
| | - Mukesh Bansal
- PsychoGenics Inc., Tarrytown, NY, United States of America
| | - Noriko Gotoh
- Division of Cancer Cell Biology, Cancer Research Institute, Kanazawa University Kakuma-machi, Kanazawa city, Japan
| | - Gen-Sheng Feng
- Department of Pathology, School of Medicine, and Section of Molecular Biology, Division of Biological Sciences, University of California San Diego, La Jolla, CA, United States of America
| | - Jian Zhong
- Burke Medical Research Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, White Plains, NY, United States of America
| | - Fen Wang
- Center for Cancer Biology and Nutrition, Institute of Biosciences and Technology, Texas A&M, Houston, TX, United States of America
| | | | - Steven Brooks
- Departments of Ophthalmology, Pathology and Cell Biology, Columbia University, New York, NY, United States of America
| | - Xin Zhang
- Departments of Ophthalmology, Pathology and Cell Biology, Columbia University, New York, NY, United States of America
- * E-mail:
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Szumska D, Cioroch M, Keeling A, Prat A, Seidah NG, Bhattacharya S. Pcsk5 is required in the early cranio-cardiac mesoderm for heart development. BMC DEVELOPMENTAL BIOLOGY 2017; 17:6. [PMID: 28446132 PMCID: PMC5407003 DOI: 10.1186/s12861-017-0148-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 04/17/2017] [Indexed: 11/25/2022]
Abstract
Background Loss of proprotein convertase subtilisin/kexin type 5 (Pcsk5) results in multiple developmental anomalies including cardiac malformations, caudal regression, pre-sacral mass, renal agenesis, anteroposterior patterning defects, and tracheo-oesophageal and anorectal malformations, and is a model for VACTERL/caudal regression/Currarino syndromes (VACTERL association - Vertebral anomalies, Anal atresia, Cardiac defects, Tracheoesophageal fistula and/or Esophageal atresia, Renal & Radial anomalies and Limb defects). Results Using magnetic resonance imaging (MRI), we examined heart development in mouse embryos with zygotic and cardiac specific deletion of Pcsk5. We show that conditional deletion of Pcsk5 in all epiblastic lineages recapitulates all developmental malformations except for tracheo-esophageal malformations. Using a conditional deletion strategy, we find that there is an essential and specific requirement for Pcsk5 in the cranio-cardiac mesoderm for cardiogenesis, but not for conotruncal septation or any other aspect of embryonic development. Surprisingly, deletion of Pcsk5 in cardiogenic or pharyngeal mesodermal progenitors that form later from the cranio-cardiac mesoderm does not affect heart development. Neither is Pcsk5 essential in the neural crest, which drives conotruncal septation. Conclusions Our results suggest that Pcsk5 may have an essential and early role in the cranio-cardiac mesoderm for heart development. Alternatively, it is possible that Pcsk5 may still play a critical role in Nkx2.5-expressing cardiac progenitors, with persistence of mRNA or protein accounting for the lack of effect of deletion on heart development. Electronic supplementary material The online version of this article (doi:10.1186/s12861-017-0148-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dorota Szumska
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, the Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - Milena Cioroch
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, the Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - Angela Keeling
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, the Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - Annik Prat
- Laboratory of Biochemical Neuroendocrinology, Montreal Clinical Research Institute (IRCM), 110 Pine Ave west, Montreal, QC, H2W1R7, Canada
| | - Nabil G Seidah
- Laboratory of Biochemical Neuroendocrinology, Montreal Clinical Research Institute (IRCM), 110 Pine Ave west, Montreal, QC, H2W1R7, Canada
| | - Shoumo Bhattacharya
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, the Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford, OX3 7BN, UK.
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Abstract
The fibroblast growth factor (Fgf) family of ligands and receptor tyrosine kinases is required throughout embryonic and postnatal development and also regulates multiple homeostatic functions in the adult. Here, Brewer et al. review the mechanisms of Fgf signaling by focusing on genetic strategies that enable in vivo analysis. The fibroblast growth factor (Fgf) family of ligands and receptor tyrosine kinases is required throughout embryonic and postnatal development and also regulates multiple homeostatic functions in the adult. Aberrant Fgf signaling causes many congenital disorders and underlies multiple forms of cancer. Understanding the mechanisms that govern Fgf signaling is therefore important to appreciate many aspects of Fgf biology and disease. Here we review the mechanisms of Fgf signaling by focusing on genetic strategies that enable in vivo analysis. These studies support an important role for Erk1/2 as a mediator of Fgf signaling in many biological processes but have also provided strong evidence for additional signaling pathways in transmitting Fgf signaling in vivo.
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Affiliation(s)
- J Richard Brewer
- Department of Developmental and Regenerative Biology, Tisch Cancer Institute, Icahn School of Medicine at Mt. Sinai, New York, New York 10029, USA
| | - Pierre Mazot
- Department of Developmental and Regenerative Biology, Tisch Cancer Institute, Icahn School of Medicine at Mt. Sinai, New York, New York 10029, USA
| | - Philippe Soriano
- Department of Developmental and Regenerative Biology, Tisch Cancer Institute, Icahn School of Medicine at Mt. Sinai, New York, New York 10029, USA
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Lauriol J, Cabrera JR, Roy A, Keith K, Hough SM, Damilano F, Wang B, Segarra GC, Flessa ME, Miller LE, Das S, Bronson R, Lee KH, Kontaridis MI. Developmental SHP2 dysfunction underlies cardiac hypertrophy in Noonan syndrome with multiple lentigines. J Clin Invest 2016; 126:2989-3005. [PMID: 27348588 PMCID: PMC4966304 DOI: 10.1172/jci80396] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 05/09/2016] [Indexed: 11/17/2022] Open
Abstract
Hypertrophic cardiomyopathy is a common cause of mortality in congenital heart disease (CHD). Many gene abnormalities are associated with cardiac hypertrophy, but their function in cardiac development is not well understood. Loss-of-function mutations in PTPN11, which encodes the protein tyrosine phosphatase (PTP) SHP2, are implicated in CHD and cause Noonan syndrome with multiple lentigines (NSML), a condition that often presents with cardiac hypertrophic defects. Here, we found that NSML-associated hypertrophy stems from aberrant signaling mechanisms originating in developing endocardium. Trabeculation and valvular hyperplasia were diminished in hearts of embryonic mice expressing a human NSML-associated variant of SHP2, and these defects were recapitulated in mice expressing NSML-associated SHP2 specifically in endothelial, but not myocardial or neural crest, cells. In contrast, mice with myocardial- but not endothelial-specific NSML SHP2 expression developed ventricular septal defects, suggesting that NSML-associated mutations have both cell-autonomous and nonautonomous functions in cardiac development. However, only endothelial-specific expression of NSML-associated SHP2 induced adult-onset cardiac hypertrophy. Further, embryos expressing the NSML-associated SHP2 mutation exhibited aberrant AKT activity and decreased downstream forkhead box P1 (FOXP1)/FGF and NOTCH1/EPHB2 signaling, indicating that SHP2 is required for regulating reciprocal crosstalk between developing endocardium and myocardium. Together, our data provide functional and disease-based evidence that aberrant SHP2 signaling during cardiac development leads to CHD and adult-onset heart hypertrophy.
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Affiliation(s)
- Jessica Lauriol
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Janel R. Cabrera
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Ashbeel Roy
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Kimberly Keith
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Sara M. Hough
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Federico Damilano
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Bonnie Wang
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Gabriel C. Segarra
- Department of Pediatrics and Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Meaghan E. Flessa
- Department of Pediatrics and Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Lauren E. Miller
- Department of Pediatrics and Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Saumya Das
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | | | - Kyu-Ho Lee
- Department of Pediatrics and Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Maria I. Kontaridis
- Department of Medicine, Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
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24
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SHP2 sails from physiology to pathology. Eur J Med Genet 2015; 58:509-25. [PMID: 26341048 DOI: 10.1016/j.ejmg.2015.08.005] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 07/24/2015] [Accepted: 08/30/2015] [Indexed: 02/08/2023]
Abstract
Over the two past decades, mutations of the PTPN11 gene, encoding the ubiquitous protein tyrosine phosphatase SHP2 (SH2 domain-containing tyrosine phosphatase 2), have been identified as the causal factor of several developmental diseases (Noonan syndrome (NS), Noonan syndrome with multiple lentigines (NS-ML), and metachondromatosis), and malignancies (juvenile myelomonocytic leukemia). SHP2 plays essential physiological functions in organism development and homeostasis maintenance by regulating fundamental intracellular signaling pathways in response to a wide range of growth factors and hormones, notably the pleiotropic Ras/Mitogen-Activated Protein Kinase (MAPK) and the Phosphoinositide-3 Kinase (PI3K)/AKT cascades. Analysis of the biochemical impacts of PTPN11 mutations first identified both loss-of-function and gain-of-function mutations, as well as more subtle defects, highlighting the major pathophysiological consequences of SHP2 dysregulation. Then, functional genetic studies provided insights into the molecular dysregulations that link SHP2 mutants to the development of specific traits of the diseases, paving the way for the design of specific therapies for affected patients. In this review, we first provide an overview of SHP2's structure and regulation, then describe its molecular roles, notably its functions in modulating the Ras/MAPK and PI3K/AKT signaling pathways, and its physiological roles in organism development and homeostasis. In the second part, we describe the different PTPN11 mutation-associated pathologies and their clinical manifestations, with particular focus on the biochemical and signaling outcomes of NS and NS-ML-associated mutations, and on the recent advances regarding the pathophysiology of these diseases.
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25
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Mendoza MC, Vilela M, Juarez JE, Blenis J, Danuser G. ERK reinforces actin polymerization to power persistent edge protrusion during motility. Sci Signal 2015; 8:ra47. [PMID: 25990957 DOI: 10.1126/scisignal.aaa8859] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cells move through perpetual protrusion and retraction cycles at the leading edge. These cycles are coordinated with substrate adhesion and retraction of the cell rear. We tracked spatial and temporal fluctuations in the molecular activities of individual moving cells to elucidate how extracellular signal-regulated kinase (ERK) signaling controlled the dynamics of protrusion and retraction cycles. ERK is activated by many cell surface receptors, and we found that ERK signaling specifically reinforced cellular protrusions so that they translated into rapid, sustained forward motion of the leading edge. Using quantitative fluorescent speckle microscopy and cross-correlation analysis, we showed that ERK controlled the rate and timing of actin polymerization by promoting the recruitment of the actin nucleator Arp2/3 to the leading edge. These findings support a model in which surges in ERK activity induced by extracellular cues enhance Arp2/3-mediated actin polymerization to generate protrusion power phases with enough force to counteract increasing membrane tension and to promote sustained motility.
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Affiliation(s)
- Michelle C Mendoza
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
| | - Marco Vilela
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Jesus E Juarez
- Departments of Cell and Tissue Biology and Pathology, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA
| | - John Blenis
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Gaudenz Danuser
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
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26
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Kamiya N, Kim HKW, King PD. Regulation of bone and skeletal development by the SHP-2 protein tyrosine phosphatase. Bone 2014; 69:55-60. [PMID: 25178522 DOI: 10.1016/j.bone.2014.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 08/15/2014] [Accepted: 08/22/2014] [Indexed: 01/06/2023]
Abstract
Src homology-2 protein tyrosine phosphatase (SHP-2) that is encoded by the PTPN11 gene in humans is an intracellular signaling molecule that couples growth factor receptors to activation of the Ras small GTP-binding protein that regulates cell growth, proliferation and differentiation. Germline mutations of PTPN11 are causative of Noonan syndrome and LEOPARD syndrome in humans in which there are recognized skeletal abnormalities that include growth retardation, spinal curvature and chest malformations. In addition, combined somatic and germline PTPN11 mutations have been shown to be responsible for a rare benign bone cartilaginous tumor disease known as metachondromatosis. In parallel, gene targeting studies performed in mice have revealed an essential role for SHP-2 as a regulator of bone and skeletal development. In this review the significance of these findings in mice to the understanding of the pathogenesis of skeletal abnormalities in humans with SHP-2 mutations is discussed.
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Affiliation(s)
- Nobuhiro Kamiya
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital for Children, Dallas, TX 75219, USA; Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390-8883, USA; Sports Medicine, Tenri University, Tenri, Nara 632-0071, Japan.
| | - Harry K W Kim
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital for Children, Dallas, TX 75219, USA; Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390-8883, USA.
| | - Philip D King
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109-5620, USA.
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Guerin A, So J, Mireskandari K, Jougeh-Doust S, Chisholm C, Klatt R, Richer J. Expanding the clinical spectrum of ocular anomalies in Noonan syndrome: Axenfeld-anomaly in a child withPTPN11mutation. Am J Med Genet A 2014; 167A:403-6. [DOI: 10.1002/ajmg.a.36841] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 09/29/2014] [Indexed: 01/06/2023]
Affiliation(s)
- Andrea Guerin
- The Hospital for Sick Children; Department of Pediatrics; Division of Clinical and Metabolic Genetics; Toronto Ontario Canada
- Kingston General Hospital; Department of Pediatrics; Division of Medical Genetics; Kingston Ontario Canada
| | - Joyce So
- The Hospital for Sick Children; Department of Pediatrics; Division of Clinical and Metabolic Genetics; Toronto Ontario Canada
- The Centre for Addiction and Mental Health; Toronto; Ontario Canada
| | - Kamiar Mireskandari
- The Hospital for Sick Children; Department of Ophthalmology and Vision Sciences; Toronto Ontario Canada
| | - Soghra Jougeh-Doust
- The Hospital for Sick Children; Department of Pediatrics; Division of Clinical and Metabolic Genetics; Toronto Ontario Canada
| | - Caitlin Chisholm
- Children's Hospital of Eastern Ontario; Department of Medical Genetics; Ottawa Ontario Canada
| | - Regan Klatt
- The Hospital for Sick Children; Department of Pediatrics; Division of Clinical and Metabolic Genetics; Toronto Ontario Canada
| | - Julie Richer
- Children's Hospital of Eastern Ontario; Department of Medical Genetics; Ottawa Ontario Canada
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28
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Lauriol J, Jaffré F, Kontaridis MI. The role of the protein tyrosine phosphatase SHP2 in cardiac development and disease. Semin Cell Dev Biol 2014; 37:73-81. [PMID: 25256404 DOI: 10.1016/j.semcdb.2014.09.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 09/09/2014] [Accepted: 09/15/2014] [Indexed: 02/06/2023]
Abstract
Congenital heart disease is the most common human developmental disorder, affecting ∼1:100 newborns, and is the primary cause of birth-defect related deaths worldwide. As a major regulator of receptor tyrosine kinase (RTK), cytokine and G-protein coupled receptor signaling, the non-receptor protein tyrosine phosphatase SHP2 plays a critical role in normal cardiac development and function. Indeed, SHP2 participates in a wide variety of cellular functions, including proliferation, survival, differentiation, migration, and cell-cell communication. Moreover, human activating and inactivating mutations of SHP2 are responsible for two related developmental disorders called Noonan and LEOPARD Syndromes, respectively, which are both characterized, in part, by congenital heart defects. Structural, enzymologic, biochemical, and SHP2 mouse model studies have together greatly enriched our knowledge of SHP2 and, as such, have also uncovered the diverse roles for SHP2 in cardiac development, including its contribution to progenitor cell specification, cardiac morphogenesis, and maturation of cardiac valves and myocardial chambers. By delineating the precise mechanisms by which SHP2 is involved in regulating these processes, we can begin to better understand the pathogenesis of cardiac disease and find more strategic and effective therapies for treatment of patients with congenital heart disorders.
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Affiliation(s)
- Jessica Lauriol
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, United States
| | - Fabrice Jaffré
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, United States
| | - Maria I Kontaridis
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, United States; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, United States.
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29
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Karunamuni GH, Ma P, Gu S, Rollins AM, Jenkins MW, Watanabe M. Connecting teratogen-induced congenital heart defects to neural crest cells and their effect on cardiac function. BIRTH DEFECTS RESEARCH. PART C, EMBRYO TODAY : REVIEWS 2014; 102:227-50. [PMID: 25220155 PMCID: PMC4238913 DOI: 10.1002/bdrc.21082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 08/26/2014] [Indexed: 12/26/2022]
Abstract
Neural crest cells play many key roles in embryonic development, as demonstrated by the abnormalities that result from their specific absence or dysfunction. Unfortunately, these key cells are particularly sensitive to abnormalities in various intrinsic and extrinsic factors, such as genetic deletions or ethanol-exposure that lead to morbidity and mortality for organisms. This review discusses the role identified for a segment of neural crest in regulating the morphogenesis of the heart and associated great vessels. The paradox is that their derivatives constitute a small proportion of cells to the cardiovascular system. Findings supporting that these cells impact early cardiac function raises the interesting possibility that they indirectly control cardiovascular development at least partially through regulating function. Making connections between insults to the neural crest, cardiac function, and morphogenesis is more approachable with technological advances. Expanding our understanding of early functional consequences could be useful in improving diagnosis and testing therapies.
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Affiliation(s)
- Ganga H. Karunamuni
- Department of Pediatrics, Case Western Reserve University School of Medicine, Case Medical Center Division of Pediatric Cardiology, Rainbow Babies and Children’s Hospital, Cleveland OH 44106
| | - Pei Ma
- Department of Biomedical Engineering, Case Western Reserve University School of Engineering, Cleveland OH 44106
| | - Shi Gu
- Department of Biomedical Engineering, Case Western Reserve University School of Engineering, Cleveland OH 44106
| | - Andrew M. Rollins
- Department of Biomedical Engineering, Case Western Reserve University School of Engineering, Cleveland OH 44106
| | - Michael W. Jenkins
- Department of Pediatrics, Case Western Reserve University School of Medicine, Case Medical Center Division of Pediatric Cardiology, Rainbow Babies and Children’s Hospital, Cleveland OH 44106
- Department of Biomedical Engineering, Case Western Reserve University School of Engineering, Cleveland OH 44106
| | - Michiko Watanabe
- Department of Pediatrics, Case Western Reserve University School of Medicine, Case Medical Center Division of Pediatric Cardiology, Rainbow Babies and Children’s Hospital, Cleveland OH 44106
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30
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The protein tyrosine phosphatase Shp2 is required for the generation of oligodendrocyte progenitor cells and myelination in the mouse telencephalon. J Neurosci 2014; 34:3767-78. [PMID: 24599474 DOI: 10.1523/jneurosci.3515-13.2014] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The protein tyrosine phosphatase Shp2 (PTPN11) is crucial for normal brain development and has been implicated in dorsal telencephalic neuronal and astroglia cell fate decisions. However, its roles in the ventral telencephalon and during oligodendrogenesis in the telencephalon remain largely unknown. Shp2 gain-of-function (GOF) mutations are observed in Noonan syndrome, a type of RASopathy associated with multiple phenotypes, including cardiovascular, craniofacial, and neurocognitive abnormalities. To gain insight into requirements for Shp2 (LOF) and the impact of abnormal Shp2 GOF mutations, we used a Shp2 conditional mutant allele (LOF) and a cre inducible Shp2-Q79R GOF transgenic mouse in combination with Olig2(cre/+) mice to target embryonic ventral telencephalic progenitors and the oligodendrocyte lineage. In the absence of Shp2 (LOF), neuronal cell types originating from progenitors in the ventral telencephalon were generated, but oligodendrocyte progenitor cell (OPC) generation was severely impaired. Late embryonic and postnatal Shp2 cKOs showed defects in the generation of OPCs throughout the telencephalon and subsequent reductions in white matter myelination. Conversely, transgenic expression of the Shp2 GOF Noonan syndrome mutation resulted in elevated OPC numbers in the embryo and postnatal brain. Interestingly, expression of this mutation negatively influenced myelination as mice displayed abnormal myelination and fewer myelinated axons in the white matter despite elevated OPC numbers. Increased proliferating OPCs and elevated MAPK activity were also observed during oligodendrogenesis after expression of Shp2 GOF mutation. These results support the notion that appropriate Shp2 activity levels control the number as well as the differentiation of oligodendrocytes during development.
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31
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Bonetti M, Rodriguez-Martinez V, Paardekooper Overman J, Overvoorde J, van Eekelen M, Jopling C, den Hertog J. Distinct and overlapping functions of ptpn11 genes in Zebrafish development. PLoS One 2014; 9:e94884. [PMID: 24736444 PMCID: PMC3988099 DOI: 10.1371/journal.pone.0094884] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 03/20/2014] [Indexed: 11/18/2022] Open
Abstract
The PTPN11 (protein-tyrosine phosphatase, non-receptor type 11) gene encodes SHP2, a cytoplasmic PTP that is essential for vertebrate development. Mutations in PTPN11 are associated with Noonan and LEOPARD syndrome. Human patients with these autosomal dominant disorders display various symptoms, including short stature, craniofacial defects and heart abnormalities. We have used the zebrafish as a model to investigate the role of Shp2 in embryonic development. The zebrafish genome encodes two ptpn11 genes, ptpn11a and ptpn11b. Here, we report that ptpn11a is expressed constitutively and ptpn11b expression is strongly upregulated during development. In addition, the products of both ptpn11 genes, Shp2a and Shp2b, are functional. Target-selected inactivation of ptpn11a and ptpn11b revealed that double homozygous mutants are embryonic lethal at 5-6 days post fertilization (dpf). Ptpn11a-/-ptpn11b-/- embryos showed pleiotropic defects from 4 dpf onwards, including reduced body axis extension and craniofacial defects, which was accompanied by low levels of phosphorylated Erk at 5 dpf. Interestingly, defects in homozygous ptpn11a-/- mutants overlapped with defects in the double mutants albeit they were milder, whereas ptpn11b-/- single mutants did not show detectable developmental defects and were viable and fertile. Ptpn11a-/-ptpn11b-/- mutants were rescued by expression of exogenous ptpn11a and ptpn11b alike, indicating functional redundance of Shp2a and Shp2b. The ptpn11 mutants provide a good basis for further unravelling of the function of Shp2 in vertebrate development.
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Affiliation(s)
- Monica Bonetti
- Hubrecht Institute-Koninklijke Nederlandse Akademie van Wetenschappen and University Medical Center Utrecht, Utrecht, The Netherlands
| | - Virginia Rodriguez-Martinez
- Hubrecht Institute-Koninklijke Nederlandse Akademie van Wetenschappen and University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jeroen Paardekooper Overman
- Hubrecht Institute-Koninklijke Nederlandse Akademie van Wetenschappen and University Medical Center Utrecht, Utrecht, The Netherlands
| | - John Overvoorde
- Hubrecht Institute-Koninklijke Nederlandse Akademie van Wetenschappen and University Medical Center Utrecht, Utrecht, The Netherlands
| | - Mark van Eekelen
- Hubrecht Institute-Koninklijke Nederlandse Akademie van Wetenschappen and University Medical Center Utrecht, Utrecht, The Netherlands
| | - Chris Jopling
- Hubrecht Institute-Koninklijke Nederlandse Akademie van Wetenschappen and University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jeroen den Hertog
- Hubrecht Institute-Koninklijke Nederlandse Akademie van Wetenschappen and University Medical Center Utrecht, Utrecht, The Netherlands
- Institute of Biology, Leiden, Leiden, The Netherlands
- * E-mail:
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32
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SHP-2 deletion in postmigratory neural crest cells results in impaired cardiac sympathetic innervation. Proc Natl Acad Sci U S A 2014; 111:E1374-82. [PMID: 24706815 DOI: 10.1073/pnas.1319208111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Autonomic innervation is an essential component of cardiovascular regulation that is first established from the neural crest (NC) lineage in utero and continues developing postnatally. Although in vitro studies have indicated that SH2-containing protein tyrosine phosphatase 2 (SHP-2) is a signaling factor critical for regulating sympathetic neuron differentiation, this has yet to be shown in the complex in vivo environment of cardiac autonomic innervation. Targeting SHP-2 within postmigratory NC lineages resulted in a fully penetrant mouse model of diminished sympathetic cardiac innervation and concomitant bradycardia. Immunohistochemistry of the sympathetic nerve marker tyrosine hydroxylase revealed a progressive loss of adrenergic ganglionic neurons and reduction of cardiac sympathetic axon density in Shp2 cKOs. Molecularly, Shp2 cKOs exhibit lineage-specific suppression of activated phospo-ERK1/2 signaling but not of other downstream targets of SHP-2 such as pAKT. Genetic restoration of the phosphorylated-extracellular signal-regulated kinase (pERK) deficiency via lineage-specific expression of constitutively active MEK1 was sufficient to rescue the sympathetic innervation deficit and its physiological consequences. These data indicate that SHP-2 signaling specifically through pERK in postmigratory NC lineages is essential for development and maintenance of sympathetic cardiac innervation postnatally.
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Maacha S, Planque N, Laurent C, Pegoraro C, Anezo O, Maczkowiak F, Monsoro-Burq AH, Saule S. Protein tyrosine phosphatase 4A3 (PTP4A3) is required for Xenopus laevis cranial neural crest migration in vivo. PLoS One 2013; 8:e84717. [PMID: 24376839 PMCID: PMC3871671 DOI: 10.1371/journal.pone.0084717] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 11/18/2013] [Indexed: 11/18/2022] Open
Abstract
Uveal melanoma is the most common intraocular malignancy in adults, representing between about 4% and 5% of all melanomas. High expression levels of Protein Tyrosine Phosphatase 4A3, a dual phosphatase, is highly predictive of metastasis development and PTP4A3 overexpression in uveal melanoma cells increases their in vitro migration and in vivo invasiveness. Melanocytes, including uveal melanocytes, are derived from the neural crest during embryonic development. We therefore suggested that PTP4A3 function in uveal melanoma metastasis may be related to an embryonic role during neural crest cell migration. We show that PTP4A3 plays a role in cephalic neural crest development in Xenopus laevis. PTP4A3 loss of function resulted in a reduction of neural crest territory, whilst gain of function experiments increased neural crest territory. Isochronic graft experiments demonstrated that PTP4A3-depleted neural crest explants are unable to migrate in host embryos. Pharmacological inhibition of PTP4A3 on dissected neural crest cells significantly reduced their migration velocity in vitro. Our results demonstrate that PTP4A3 is required for cephalic neural crest migration in vivo during embryonic development.
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Affiliation(s)
- Selma Maacha
- Institut Curie, Research Division, Orsay, France
- CNRS UMR3347, Orsay, France
- INSERM U1021, Orsay, France
- Université Paris Sud, Orsay, France
| | - Nathalie Planque
- Institut Curie, Research Division, Orsay, France
- CNRS UMR3347, Orsay, France
- INSERM U1021, Orsay, France
- Université Paris Sud, Orsay, France
- Université Paris Diderot, Sorbonne Paris Cité, France
| | - Cécile Laurent
- Institut Curie, Research Division, Orsay, France
- CNRS UMR3347, Orsay, France
- INSERM U1021, Orsay, France
- Université Paris Sud, Orsay, France
| | - Caterina Pegoraro
- Institut Curie, Research Division, Orsay, France
- CNRS UMR3347, Orsay, France
- INSERM U1021, Orsay, France
- Université Paris Sud, Orsay, France
| | - Océane Anezo
- Institut Curie, Research Division, Orsay, France
- CNRS UMR3347, Orsay, France
- INSERM U1021, Orsay, France
- Université Paris Sud, Orsay, France
| | - Frédérique Maczkowiak
- Institut Curie, Research Division, Orsay, France
- CNRS UMR3347, Orsay, France
- INSERM U1021, Orsay, France
- Université Paris Sud, Orsay, France
| | - Anne H. Monsoro-Burq
- Institut Curie, Research Division, Orsay, France
- CNRS UMR3347, Orsay, France
- INSERM U1021, Orsay, France
- Université Paris Sud, Orsay, France
- * E-mail: (AHMB); (SS)
| | - Simon Saule
- Institut Curie, Research Division, Orsay, France
- CNRS UMR3347, Orsay, France
- INSERM U1021, Orsay, France
- Université Paris Sud, Orsay, France
- * E-mail: (AHMB); (SS)
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Association between Noonan syndrome and Chiari I malformation: a case-based update. Childs Nerv Syst 2013; 29:749-52. [PMID: 23239255 DOI: 10.1007/s00381-012-2000-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 12/03/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Chiari I malformations (CM-I) have been associated with a variety of developmental abnormalities in the literature. A few cases of CM-I in patients with Noonan syndrome (NS) have been reported; however, opinion remains divided as to whether the observed association is coincidental. DISCUSSION Six previous cases of CM-I in patients with NS have been described in the literature. Many of these had other neurological abnormalities; however, neurological problems are not a prominent part of earlier descriptions of NS. A statistically significant association between NS and CM-I is difficult to obtain at present due to availability and logistical issues with scanning many asymptomatic patients. Although we believe a link exists between CM-I and NS, there is little understanding on how NS may cause CM-I. The most logical cause would be posterior fossa abnormality; however, the most common genetic mutation in NS tends to cause frontal and facial abnormalities, and the posterior fossa tends to be relatively spared. Other genetic mutations may also affect the posterior cranium and thus create the appropriate conditions for a CM-I to develop. ILLUSTRATIVE CASE We report a case of CM-I in a 9-year-old patient with Noonan syndrome, severe scoliosis and syringomyelia. CONCLUSION We believe that CM-I is a part of Noonan syndrome; however, statistical validation of this opinion is necessary.
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35
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Lin CJ, Lin CY, Chen CH, Zhou B, Chang CP. Partitioning the heart: mechanisms of cardiac septation and valve development. Development 2012; 139:3277-99. [PMID: 22912411 DOI: 10.1242/dev.063495] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Heart malformations are common congenital defects in humans. Many congenital heart defects involve anomalies in cardiac septation or valve development, and understanding the developmental mechanisms that underlie the formation of cardiac septal and valvular tissues thus has important implications for the diagnosis, prevention and treatment of congenital heart disease. The development of heart septa and valves involves multiple types of progenitor cells that arise either within or outside the heart. Here, we review the morphogenetic events and genetic networks that regulate spatiotemporal interactions between the cells that give rise to septal and valvular tissues and hence partition the heart.
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Affiliation(s)
- Chien-Jung Lin
- Division of Cardiovascular Medicine, Department of Medicine, Stanford Cardiovascular Institute, Stanford University, Stanford, CA 94305, USA
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Burmeister BT, Taglieri DM, Wang L, Carnegie GK. Src homology 2 domain-containing phosphatase 2 (Shp2) is a component of the A-kinase-anchoring protein (AKAP)-Lbc complex and is inhibited by protein kinase A (PKA) under pathological hypertrophic conditions in the heart. J Biol Chem 2012; 287:40535-46. [PMID: 23045525 DOI: 10.1074/jbc.m112.385641] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AKAP-Lbc is a scaffold protein that coordinates cardiac hypertrophic signaling. RESULTS AKAP-Lbc interacts with Shp2, facilitating its regulation by PKA. CONCLUSION AKAP-Lbc integrates PKA and Shp2 signaling in the heart. Under pathological hypertrophic conditions Shp2 is phosphorylated by PKA, and phosphatase activity is inhibited. SIGNIFICANCE Inhibition of Shp2 activity through AKAP-Lbc-anchored PKA is a previously unrecognized mechanism that may promote pathological cardiac hypertrophy. Pathological cardiac hypertrophy (an increase in cardiac mass resulting from stress-induced cardiac myocyte growth) is a major factor underlying heart failure. Our results identify a novel mechanism of Shp2 inhibition that may promote cardiac hypertrophy. We demonstrate that the tyrosine phosphatase, Shp2, is a component of the A-kinase-anchoring protein (AKAP)-Lbc complex. AKAP-Lbc facilitates PKA phosphorylation of Shp2, which inhibits its protein-tyrosine phosphatase activity. Given the important cardiac roles of both AKAP-Lbc and Shp2, we investigated the AKAP-Lbc-Shp2 interaction in the heart. AKAP-Lbc-tethered PKA is implicated in cardiac hypertrophic signaling; however, mechanism of PKA action is unknown. Mutations resulting in loss of Shp2 catalytic activity are also associated with cardiac hypertrophy and congenital heart defects. Our data indicate that AKAP-Lbc integrates PKA and Shp2 signaling in the heart and that AKAP-Lbc-associated Shp2 activity is reduced in hypertrophic hearts in response to chronic β-adrenergic stimulation and PKA activation. Thus, while induction of cardiac hypertrophy is a multifaceted process, inhibition of Shp2 activity through AKAP-Lbc-anchored PKA is a previously unrecognized mechanism that may promote compensatory cardiac hypertrophy.
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Affiliation(s)
- Brian T Burmeister
- Department of Pharmacology, College of Medicine, University of Illinois, Chicago, IL 60612, USA
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Roffers-Agarwal J, Hutt KJ, Gammill LS. Paladin is an antiphosphatase that regulates neural crest cell formation and migration. Dev Biol 2012; 371:180-90. [PMID: 22926139 DOI: 10.1016/j.ydbio.2012.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Revised: 08/05/2012] [Accepted: 08/15/2012] [Indexed: 12/31/2022]
Abstract
Although a network of transcription factors that specifies neural crest identity in the ectoderm has been defined, expression of neural crest transcription factors does not guarantee eventual migration as a neural crest cell. While much work has gone into determining regulatory relationships within the transcription factor network, the ability of protein modifications like phosphorylation to modulate the function of neural crest regulatory factors and determine when and where they are active also has crucial implications. Paladin, which was previously classified as a phosphatase based on sequence similarity, is expressed in chick neural crest precursors and is maintained throughout their epithelial to mesenchymal transition and migration. Loss of Paladin delays the expression of transcription factors Snail2 and Sox10 in premigratory neural crest cells, but does not affect accumulation of FoxD3, Cad6B or RhoB, indicating that Paladin differentially modulates the expression of genes previously thought to be coregulated within the neural crest gene regulatory network. Both gain and loss of Paladin function result in disrupted neural crest migration, reinforcing the importance of precisely regulated phosphorylation for neural crest migration. Mutation of critical, catalytic cysteine residues within Paladin's predicted phosphatase active site motifs did not abolish the function of Paladin in the neural crest. Collectively, these data indicate that Paladin is an antiphosphatase that modulates the activity of specific neural crest regulatory factors during neural crest development. Our work identifies a novel regulator of phosphorylation status that provides an additional layer of regulation in the neural crest.
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Affiliation(s)
- Julaine Roffers-Agarwal
- Department of Genetics, Cell Biology and Development, 6-160 Jackson Hall, 321 Church Street SE, University of Minnesota, Minneapolis, MN 55455, USA
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Keyte A, Hutson MR. The neural crest in cardiac congenital anomalies. Differentiation 2012; 84:25-40. [PMID: 22595346 DOI: 10.1016/j.diff.2012.04.005] [Citation(s) in RCA: 161] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 04/02/2012] [Accepted: 04/04/2012] [Indexed: 02/07/2023]
Abstract
This review discusses the function of neural crest as they relate to cardiovascular defects. The cardiac neural crest cells are a subpopulation of cranial neural crest discovered nearly 30 years ago by ablation of premigratory neural crest. The cardiac neural crest cells are necessary for normal cardiovascular development. We begin with a description of the crest cells in normal development, including their function in remodeling the pharyngeal arch arteries, outflow tract septation, valvulogenesis, and development of the cardiac conduction system. The cells are also responsible for modulating signaling in the caudal pharynx, including the second heart field. Many of the molecular pathways that are known to influence specification, migration, patterning and final targeting of the cardiac neural crest cells are reviewed. The cardiac neural crest cells play a critical role in the pathogenesis of various human cardiocraniofacial syndromes such as DiGeorge, Velocardiofacial, CHARGE, Fetal Alcohol, Alagille, LEOPARD, and Noonan syndromes, as well as Retinoic Acid Embryopathy. The loss of neural crest cells or their dysfunction may not always directly cause abnormal cardiovascular development, but are involved secondarily because crest cells represent a major component in the complex tissue interactions in the head, pharynx and outflow tract. Thus many of the human syndromes linking defects in the heart, face and brain can be better understood when considered within the context of a single cardiocraniofacial developmental module with the neural crest being a key cell type that interconnects the regions.
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Affiliation(s)
- Anna Keyte
- Department of Pediatrics (Neonatology), Neonatal-Perinatal Research Institute, Box 103105, Duke University Medical Center, Durham, NC 27710, USA
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Pleskot R, Pejchar P, Bezvoda R, Lichtscheidl IK, Wolters-Arts M, Marc J, Žárský V, Potocký M. Turnover of Phosphatidic Acid through Distinct Signaling Pathways Affects Multiple Aspects of Pollen Tube Growth in Tobacco. FRONTIERS IN PLANT SCIENCE 2012; 3:54. [PMID: 22639652 PMCID: PMC3355619 DOI: 10.3389/fpls.2012.00054] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 02/29/2012] [Indexed: 05/20/2023]
Abstract
Phosphatidic acid (PA) is an important intermediate in membrane lipid metabolism that acts as a key component of signaling networks, regulating the spatio-temporal dynamics of the endomembrane system and the cytoskeleton. Using tobacco pollen tubes as a model, we addressed the signaling effects of PA by probing the functions of three most relevant enzymes that regulate the production and degradation of PA, namely, phospholipases D (PLD), diacylglycerol kinases (DGKs), and lipid phosphate phosphatases (LPPs). Phylogenetic analysis indicated a highly dynamic evolution of all three lipid-modifying enzymes in land plants, with many clade-specific duplications or losses and massive diversification of the C2-PLD family. In silico transcriptomic survey revealed increased levels of expression of all three PA-regulatory genes in pollen development (particularly the DGKs). Using specific inhibitors we were able to distinguish the contributions of PLDs, DGKs, and LPPs into PA-regulated processes. Thus, suppressing PA production by inhibiting either PLD or DGK activity compromised membrane trafficking except early endocytosis, disrupted tip-localized deposition of cell wall material, especially pectins, and inhibited pollen tube growth. Conversely, suppressing PA degradation by inhibiting LPP activity using any of three different inhibitors significantly stimulated pollen tube growth, and similar effect was achieved by suppressing the expression of tobacco pollen LPP4 using antisense knock-down. Interestingly, inhibiting specifically DGK changed vacuolar dynamics and the morphology of pollen tubes, whereas inhibiting specifically PLD disrupted the actin cytoskeleton. Overall, our results demonstrate the critical importance of all three types of enzymes involved in PA production and degradation, with strikingly different roles of PA produced by the PLD and DGK pathways, in pollen tube growth.
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Affiliation(s)
- Roman Pleskot
- Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech RepublicPrague, Czech Republic
| | - Přemysl Pejchar
- Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech RepublicPrague, Czech Republic
| | - Radek Bezvoda
- Department of Experimental Plant Biology, Faculty of Science, Charles University in PraguePrague, Czech Republic
| | - Irene K. Lichtscheidl
- Core Facility of Cell Imaging and Ultrastructure Research, University of ViennaVienna, Austria
| | - Mieke Wolters-Arts
- Department of Molecular Plant Physiology, Institute for Wetland and Water Research, Radboud University NijmegenNijmegen, Netherlands
| | - Jan Marc
- School of Biological Sciences, University of SydneySydney, NSW, Australia
| | - Viktor Žárský
- Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech RepublicPrague, Czech Republic
- Department of Experimental Plant Biology, Faculty of Science, Charles University in PraguePrague, Czech Republic
| | - Martin Potocký
- Institute of Experimental Botany, v. v. i., Academy of Sciences of the Czech RepublicPrague, Czech Republic
- *Correspondence: Martin Potocký, Laboratory of Cell Biology, Institute of Experimental Botany AS CR, v.v.i., Academy of Sciences of the Czech Republic, Rozvojová 263, 165 02 Prague 6, Lysolaje, Czech Republic. e-mail:
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Chapnik E, Sasson V, Blelloch R, Hornstein E. Dgcr8 controls neural crest cells survival in cardiovascular development. Dev Biol 2011; 362:50-6. [PMID: 22138056 DOI: 10.1016/j.ydbio.2011.11.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Accepted: 11/12/2011] [Indexed: 11/15/2022]
Abstract
DiGeorge syndrome (DGS), characterized genetically by a deletion within chromosome 22q11.2, is associated with a constellation of congenital heart defects. DiGeorge critical region 8 (Dgcr8), a gene that maps to the common deletion region of DGS, encodes a double stranded RNA-binding protein that is essential for miRNA biogenesis. To address the potential contribution of Dgcr8 insufficiency to cardiovascular development, we have inactivated Dgcr8 in cardiac neural crest cells (cNCCs). Dgcr8 mutants displayed a wide spectrum of malformations, including persistent truncus arteriosus (PTA) and ventricular septal defect (VSD). Interestingly, Dgcr8-null cNCCs that properly migrated into the cardiac outflow tract (OFT), proliferate normally and differentiate into vascular smooth muscle cells. However, loss of Dgcr8 causes a significant portion of the cNCCs to undergo apoptosis, causing a decrease in the pool of progenitors required for OFT remodeling. Our data uncover a new role of Dgcr8 in cardiovascular morphogenesis, plausibly as part of transmission mechanism for FGF-dependent survival cue for migrating cNCCs.
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Affiliation(s)
- Elik Chapnik
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
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Hung PC, Wang HS, Wong AMC. Moyamoya syndrome in a child with Noonan syndrome. Pediatr Neurol 2011; 45:129-31. [PMID: 21763956 DOI: 10.1016/j.pediatrneurol.2011.03.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Accepted: 03/07/2011] [Indexed: 10/18/2022]
Abstract
Previous studies have rarely described the association between Noonan syndrome and moyamoya syndrome. Although most affected children with moyamoya exhibit ischemic symptoms, headache is also a frequent symptom. We report the case of a 9-year-old girl with Noonan syndrome and moyamoya syndrome that manifested as recurrent headaches without history of transient ischemic attack. Brain magnetic resonance imaging and magnetic resonance angiography revealed bilateral moyamoya syndrome and mild ventriculomegaly with focal encephalomalacia at right peritrigonal region. Disruption of vascular development during the prenatal stage has been proposed as the cause of cerebrovascular disease in Noonan syndrome. However, genetic factors may also contribute.
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Affiliation(s)
- Po-Cheng Hung
- Division of Pediatric Neurology, Chang Gung Children's Hospital, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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Chen PC, Wakimoto H, Conner D, Araki T, Yuan T, Roberts A, Seidman CE, Bronson R, Neel BG, Seidman JG, Kucherlapati R. Activation of multiple signaling pathways causes developmental defects in mice with a Noonan syndrome–associated Sos1 mutation. J Clin Invest 2011; 120:4353-65. [PMID: 21041952 DOI: 10.1172/jci43910] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Accepted: 09/15/2010] [Indexed: 02/06/2023] Open
Abstract
Noonan syndrome (NS) is an autosomal dominant genetic disorder characterized by short stature, unique facial features, and congenital heart disease. About 10%-15% of individuals with NS have mutations in son of sevenless 1 (SOS1), which encodes a RAS and RAC guanine nucleotide exchange factor (GEF). To understand the role of SOS1 in the pathogenesis of NS, we generated mice with the NS-associated Sos1E846K gain-of-function mutation. Both heterozygous and homozygous mutant mice showed many NS-associated pheno-types, including growth delay, distinctive facial dysmorphia, hematologic abnormalities, and cardiac defects. We found that the Ras/MAPK pathway as well as Rac and Stat3 were activated in the mutant hearts. These data provide in vivo molecular and cellular evidence that Sos1 is a GEF for Rac under physiological conditions and suggest that Rac and Stat3 activation might contribute to NS phenotypes. Furthermore, prenatal administration of a MEK inhibitor ameliorated the embryonic lethality, cardiac defects, and NS features of the homozygous mutant mice, demonstrating that this signaling pathway might represent a promising therapeutic target for NS.
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Affiliation(s)
- Peng-Chieh Chen
- Department of Genetics, Harvard Medical School, Boston, Massachusetts, USA
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Timmerman E, Clur SA, Pajkrt E, Bilardo CM. First-trimester measurement of the ductus venosus pulsatility index and the prediction of congenital heart defects. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2010; 36:668-675. [PMID: 20617506 DOI: 10.1002/uog.7742] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/29/2010] [Indexed: 05/29/2023]
Abstract
OBJECTIVE This study was carried out to evaluate the additional predictive value of ductus venosus pulsatility index for veins (DV-PIV) in the identification of congenital heart defects (CHDs) in fetuses with an enlarged nuchal translucency (NT) and a normal karyotype. METHODS All chromosomally normal fetuses referred to our Fetal Medicine Unit between September 1996 and December 2008 with known NT, DV-PIV and ductus venosus (DV) a-wave measurements were included. Intrafetus variation in DV-PIV was overcome by averaging three recordings. Follow-up included special focus on CHD. The odds of CHD at any NT and DV-PIV value were evaluated using logistic regression analysis. RESULTS Of 792 fetuses included, the NT was enlarged (equal to or above the 95(th) percentile (P95)) in 318 (40.2%). The DV-PIV was abnormal (≥ P95) in 41.8% of the fetuses with an enlarged NT and the a-wave was abnormal (negative or reversed) in 29.9%. CHD was diagnosed in 35 fetuses, 33 of which had an enlarged NT. Amongst the fetuses with an enlarged NT, the sensitivities for CHD of abnormal DV-PIV and DV a-wave were 73% and 55%, with specificities of 62% and 73%, respectively. Logistic regression analysis showed that in this risk group the DV-PIV multiple of the median (MoM) (as a continuous variable) was significantly associated with the risk of CHD (odds ratio = 2.4), independent of the degree of NT enlargement, whereas the DV a-wave did not significantly add to the prediction of CHD. CONCLUSION Two-thirds of fetuses with an enlarged NT, a normal karyotype and CHD have an increased DV-PIV. DV-PIV can be used as continuous variable in combination with NT to increase specificity in the identification of CHD and to refine the individual risk assessment.
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Affiliation(s)
- E Timmerman
- Department of Obstetrics & Gynecology, Academic Medical Centre, Amsterdam, The Netherlands.
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Timmerman E, Pajkrt E, Maas SM, Bilardo CM. Enlarged nuchal translucency in chromosomally normal fetuses: strong association with orofacial clefts. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2010; 36:427-432. [PMID: 20499406 DOI: 10.1002/uog.7650] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
OBJECTIVES The aim of this study was to investigate whether there is an association between enlarged nuchal translucency (NT) and orofacial clefts. METHODS The pregnancy outcome of women who underwent an NT measurement between January 2000 and November 2008 was reviewed. All orofacial clefts detected prenatally and postnatally in karyotypically normal fetuses/infants were reviewed and a distinction was made between isolated defects and clefts as part of multiple congenital anomalies (associated). RESULTS The cohort included 8638 fetuses. The NT was enlarged in 746 (8.6%). The karyotype was normal in 8347 fetuses, including 513 of the fetuses with an enlarged NT. Isolated or associated cleft lip, with or without cleft palate (CL/P), or cleft palate (CP) were diagnosed in 18 chromosomally normal fetuses (an incidence of 2.2 per 1000). In eight of these cases the NT was normal (8/7834; an incidence of 1.0 per 1000) and in the remaining 10 it was enlarged (10/513; an incidence of 19.5 per 1000). CL/P and CP were isolated or associated in three and seven of the chromosomally normal fetuses with an enlarged NT, respectively. Euploid fetuses with an enlarged NT had a relative risk for any clefts of 19 and a relative risk for isolated or associated clefts of 8 and 53, respectively (P < 0.001). CONCLUSIONS Chromosomally normal fetuses with an enlarged NT have an increased risk of orofacial clefts. CL/P and CP are, in these fetuses, mostly associated findings, frequently part of a genetic syndrome. A detailed ultrasound examination with special attention given to the orofacial area is indicated in these fetuses.
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Affiliation(s)
- E Timmerman
- Department of Obstetrics & Gynecology, Academic Medical Centre, Amsterdam, The Netherlands.
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Abstract
Deregulation of signaling pathways, through mutation or other molecular changes, can ultimately result in disease. The tyrosine phosphatase Shp2 has emerged as a major regulator of receptor tyrosine kinase (RTK) and cytokine receptor signaling. In the last decade, germline mutations in the human PTPN11 gene, encoding Shp2, were linked to Noonan (NS) and LEOPARD syndromes, two multisymptomatic developmental disorders that are characterized by short stature, craniofacial defects, cardiac defects, and mental retardation. Somatic Shp2 mutations are also associated with several types of human malignancies, such as the most common juvenile leukemia, juvenile myelomonocytic leukemia (JMML). Whereas NS and JMML are caused by gain-of-function (GOF) mutations of Shp2, loss-of-function (LOF) mutations are thought to be associated with LEOPARD syndrome. Animal models that carry conditional LOF and GOF mutations have allowed a better understanding of the mechanism of Shp2 function in disease, and shed light on the role of Shp2 in signaling pathways that control decisive events during embryonic development or during cellular transformation/tumorigenesis.
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Phosphatase-dependent and -independent functions of Shp2 in neural crest cells underlie LEOPARD syndrome pathogenesis. Dev Cell 2010; 18:750-62. [PMID: 20493809 DOI: 10.1016/j.devcel.2010.03.009] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Revised: 02/11/2010] [Accepted: 03/12/2010] [Indexed: 01/19/2023]
Abstract
The tyrosine phosphatase SHP2 (PTPN11) regulates cellular proliferation, survival, migration, and differentiation during development. Germline mutations in PTPN11 cause Noonan and LEOPARD syndromes, which have overlapping clinical features. Paradoxically, Noonan syndrome mutations increase SHP2 phosphatase activity, while LEOPARD syndrome mutants are catalytically impaired, raising the possibility that SHP2 has phosphatase-independent roles. By comparing shp2-deficient zebrafish embryos with those injected with mRNA encoding LEOPARD syndrome point mutations, we identify a phosphatase- and Erk-dependent role for Shp2 in neural crest specification and migration. We also identify an unexpected phosphatase- and Erk-independent function, mediated through its SH2 domains, which is evolutionarily conserved and prevents p53-mediated apoptosis in the brain and neural crest. Our results indicate that previously enigmatic aspects of LEOPARD syndrome pathogenesis can be explained by the combined effects of loss of Shp2 catalytic function and retention of an SH2 domain-mediated role that is essential for neural crest cell survival.
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Bilardo CM, Timmerman E, Pajkrt E, van Maarle M. Increased nuchal translucency in euploid fetuses--what should we be telling the parents? Prenat Diagn 2010; 30:93-102. [PMID: 20077440 DOI: 10.1002/pd.2396] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Nuchal translucency (NT) measurement between 11 and 14 weeks' gestation is an undisputed marker for aneuploidies. When conventional karyotyping is normal, enlarged NT is a strong marker for adverse pregnancy outcome, associated with miscarriage, intrauterine death, congenital heart defects, and numerous other structural defects and genetic syndromes. The risk of adverse outcome is proportional to the degree of NT enlargement. Although the majority of structural anomalies are amenable to ultrasound detection, unspecified genetic syndromes involving developmental delay may only emerge after birth. Concern over these prenatally undetectable conditions is a heavy burden for parents. However, following detection of enlarged NT the majority of babies with normal detailed ultrasound examination and echocardiography will have an uneventful outcome with no increased risk for developmental delay when compared to the general population. Counseling should emphasize this to help parents restore hope in normal pregnancy outcome and infant development.
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Affiliation(s)
- C M Bilardo
- Department of Obstetrics and Gynaecology, Fetal Medicine Unit Academic Medical Centre, Amsterdam, The Netherlands.
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The tyrosine phosphatase Shp2 (PTPN11) directs Neuregulin-1/ErbB signaling throughout Schwann cell development. Proc Natl Acad Sci U S A 2009; 106:16704-9. [PMID: 19805360 DOI: 10.1073/pnas.0904336106] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The nonreceptor tyrosine phosphatase Shp2 (PTPN11) has been implicated in tyrosine kinase, cytokine, and integrin receptor signaling. We show here that conditional mutation of Shp2 in neural crest cells and in myelinating Schwann cells resulted in deficits in glial development that are remarkably similar to those observed in mice mutant for Neuregulin-1 (Nrg1) or the Nrg1 receptors, ErbB2 and ErbB3. In cultured Shp2 mutant Schwann cells, Nrg1-evoked cellular responses like proliferation and migration were virtually abolished, and Nrg1-dependent intracellular signaling was altered. Pharmacological inhibition of Src family kinases mimicked all cellular and biochemical effects of the Shp2 mutation, implicating Src as a primary Shp2 target during Nrg1 signaling. Together, our genetic and biochemical analyses demonstrate that Shp2 is an essential component in the transduction of Nrg1/ErbB signals.
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