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Chen KQ, Kawakami H, Anderson A, Corcoran D, Soni A, Nishinakamura R, Kawakami Y. Sall genes regulate hindlimb initiation in mouse embryos. Genetics 2024; 227:iyae029. [PMID: 38386912 PMCID: PMC11075541 DOI: 10.1093/genetics/iyae029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 01/15/2024] [Accepted: 02/14/2024] [Indexed: 02/24/2024] Open
Abstract
Vertebrate limbs start to develop as paired protrusions from the lateral plate mesoderm at specific locations of the body with forelimb buds developing anteriorly and hindlimb buds posteriorly. During the initiation process, limb progenitor cells maintain active proliferation to form protrusions and start to express Fgf10, which triggers molecular processes for outgrowth and patterning. Although both processes occur in both types of limbs, forelimbs (Tbx5), and hindlimbs (Isl1) utilize distinct transcriptional systems to trigger their development. Here, we report that Sall1 and Sall4, zinc finger transcription factor genes, regulate hindlimb initiation in mouse embryos. Compared to the 100% frequency loss of hindlimb buds in TCre; Isl1 conditional knockouts, Hoxb6Cre; Isl1 conditional knockout causes a hypomorphic phenotype with only approximately 5% of mutants lacking the hindlimb. Our previous study of SALL4 ChIP-seq showed SALL4 enrichment in an Isl1 enhancer, suggesting that SALL4 acts upstream of Isl1. Removing 1 allele of Sall4 from the hypomorphic Hoxb6Cre; Isl1 mutant background caused loss of hindlimbs, but removing both alleles caused an even higher frequency of loss of hindlimbs, suggesting a genetic interaction between Sall4 and Isl1. Furthermore, TCre-mediated conditional double knockouts of Sall1 and Sall4 displayed a loss of expression of hindlimb progenitor markers (Isl1, Pitx1, Tbx4) and failed to develop hindlimbs, demonstrating functional redundancy between Sall1 and Sall4. Our data provides genetic evidence that Sall1 and Sall4 act as master regulators of hindlimb initiation.
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Affiliation(s)
- Katherine Q Chen
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Hiroko Kawakami
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455, USA
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA
- Developmental Biology Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Aaron Anderson
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Dylan Corcoran
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Aditi Soni
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Ryuichi Nishinakamura
- Department of Kidney Development, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto 860-0811, Japan
| | - Yasuhiko Kawakami
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455, USA
- Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA
- Developmental Biology Center, University of Minnesota, Minneapolis, MN 55455, USA
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2
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Wu Q, Liu H, Yang Q, Qi J, Xi Y, Tang Q, Wang R, Hu J, Li L. Transcriptome-based comparison reveals key genes regulating allometry growth of forelimb and hindlimb bone in duck embryos. Poult Sci 2024; 103:103317. [PMID: 38160613 PMCID: PMC10792745 DOI: 10.1016/j.psj.2023.103317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/29/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024] Open
Abstract
Allometric growth of the forelimb and hindlimb is a widespread phenomenon observed in vertebrates. As a typical precocial bird, ducks exhibit more advanced development of their hindlimbs compared to their forelimbs, enabling them to walk shortly after hatching. This phenomenon is closely associated with the development of long bones in the embryonic stage. However, the molecular mechanism governing the allometric growth of duck forelimb and hindlimb bones is remains elusive. In this study, we employed phenotypic, histological, and gene expression analyses to investigate developmental differences between the humerus (forelimb bone) and tibia/femur (hindlimb bones) in duck embryos. Our results revealed a gradual increase in weight and length disparity between the tibia and humerus from E12 to E28 (embryo age). At E12, endochondral ossification was observed solely in the tibia but not in the humerus. The number of differentially expressed genes (DEGs) gradually increased at H12 vs. T12, H20 vs. T20, and H28 vs. T28 stages consistent with phenotypic variations. A total of 38 DEGs were found across all 3 stages. Protein-protein interaction network analysis demonstrated strong interactions among members of HOXD gene family (HOXD3/8/9/10/11/12), HOXB gene family (HOXB8/9), TBX gene family (TBX4/5/20), HOXA11, SHOX2, and MEIS2. Gene expression profiling indicated higher expression levels for all HOXD genes in the humerus compared to tibia while opposite trends were observed for HOXA/HOXB genes with low or no expression detected in the humerus. These findings suggest distinct roles played by different clusters within HOX gene family during skeletal development regulation of duck embryo's forelimbs versus hind limbs. Notably, TBX4 exhibited high expression levels specifically in tibia whereas TBX5 showed similar patterns exclusively within humerus as seen previously across other species' studies. In summary, this study identified key regulatory genes involved in allometric growth of duck forelimb and hindlimb bones during embryonic development. Skeletal development is a complex physiological process, and further research is needed to elucidate the regulatory role of candidate genes in endochondral ossification.
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Affiliation(s)
- Qifan Wu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China; Ministry of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, 644000, China
| | - Hehe Liu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qinglan Yang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jingjing Qi
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yang Xi
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qian Tang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Rui Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jiwei Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Liang Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
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3
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Du X, Wu X, Yu L, Min W, Chen G, Liu F, Li J. COL1A1 regulates the apoptosis of embryonic stem cells by mediating the PITX1/TBX4 signaling. Birth Defects Res 2024; 116:e2277. [PMID: 38158794 DOI: 10.1002/bdr2.2277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/29/2023] [Accepted: 11/14/2023] [Indexed: 01/03/2024]
Abstract
PURPOSE The purpose of this study is to explore the regulatory function of COL1A1 against the apoptosis of embryonic stem cells (ESCs) and the potential function in congenital talipes equinovarus (CTEV). METHODS Muscle tissues were collected from 20 children with CTEV and 20 children without CTEV, followed by detecting the expression of COL1A1 using the RT-PCR method. COL1A1 was knocked down in H1 and H9 human ESCs using the RNA interference technology, followed by determining the level of COL1A1, PITX1, TBX4, HOXD10, Fas, FasL, and Bax using the Western blotting assay. RESULTS COL1A1 was found markedly upregulated in muscle tissues of CTEV children. In H1 and H9 human ESCs, compared to the empty vector, COL1A1, PITX1, TBX4, HOXD10, Fas, FasL, and Bax were found notably downregulated after transfected with the siRNA targeting COL1A1. CONCLUSION COL1A1 induced the apoptosis of ESCs by mediating the PITX1/TBX4 signaling and might be a potential target for treating CTEV.
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Affiliation(s)
- Xiangping Du
- Department of Orthopaedics, Jiangxi Provincial Children's Hospital, Nanchang City, Jiangxi Province, China
| | - Xinle Wu
- Department of Orthopaedics, Jiangxi Provincial Children's Hospital, Nanchang City, Jiangxi Province, China
| | - Lirong Yu
- Department of Endocrinology, Genetics and Metabolism, Jiangxi Provincial Children's Hospital, Nanchang City, Jiangxi Province, China
| | - Wu Min
- Department of Orthopaedics, Jiangxi Provincial Children's Hospital, Nanchang City, Jiangxi Province, China
| | - Gan Chen
- Department of Orthopaedics, Jiangxi Provincial Children's Hospital, Nanchang City, Jiangxi Province, China
| | - Fadi Liu
- Department of Orthopaedics, Jiangxi Provincial Children's Hospital, Nanchang City, Jiangxi Province, China
| | - Jian Li
- Department of Orthopaedics, Jiangxi Provincial Children's Hospital, Nanchang City, Jiangxi Province, China
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4
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Kondoh H. Reciprocal Interactions Between the Epithelium and Mesenchyme in Organogenesis. Results Probl Cell Differ 2024; 72:119-126. [PMID: 38509255 DOI: 10.1007/978-3-031-39027-2_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Many organs are composed of epithelial and mesenchymal tissue components. These two tissue component types develop via reciprocal interactions. However, for historical and technical reasons, the effects of the mesenchymal components on the epithelium have been emphasized. Well-documented examples are the regionally specific differentiation of the endoderm-derived primitive gut tube under the influence of surrounding mesenchyme. In contrast to a pile of reports on mesenchyme-derived signaling mechanisms, few studies have depicted the epithelial action in depth. This chapter highlights an example of an opposite action from the epithelial side, which was found in esophagus development.
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Affiliation(s)
- Hisato Kondoh
- Osaka University, Suita, Osaka, Japan
- Biohistory Research Hall, Takatsuki, Osaka, Japan
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5
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Alber AB, Marquez HA, Ma L, Kwong G, Thapa BR, Villacorta-Martin C, Lindstrom-Vautrin J, Bawa P, Wang F, Luo Y, Ikonomou L, Shi W, Kotton DN. Directed differentiation of mouse pluripotent stem cells into functional lung-specific mesenchyme. Nat Commun 2023; 14:3488. [PMID: 37311756 PMCID: PMC10264380 DOI: 10.1038/s41467-023-39099-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 05/30/2023] [Indexed: 06/15/2023] Open
Abstract
While the generation of many lineages from pluripotent stem cells has resulted in basic discoveries and clinical trials, the derivation of tissue-specific mesenchyme via directed differentiation has markedly lagged. The derivation of lung-specific mesenchyme is particularly important since this tissue plays crucial roles in lung development and disease. Here we generate a mouse induced pluripotent stem cell (iPSC) line carrying a lung-specific mesenchymal reporter/lineage tracer. We identify the pathways (RA and Shh) necessary to specify lung mesenchyme and find that mouse iPSC-derived lung mesenchyme (iLM) expresses key molecular and functional features of primary developing lung mesenchyme. iLM recombined with engineered lung epithelial progenitors self-organizes into 3D organoids with juxtaposed layers of epithelium and mesenchyme. Co-culture increases yield of lung epithelial progenitors and impacts epithelial and mesenchymal differentiation programs, suggesting functional crosstalk. Our iPSC-derived population thus provides an inexhaustible source of cells for studying lung development, modeling diseases, and developing therapeutics.
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Affiliation(s)
- Andrea B Alber
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Hector A Marquez
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Liang Ma
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - George Kwong
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Bibek R Thapa
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Carlos Villacorta-Martin
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
| | | | - Pushpinder Bawa
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
| | - Feiya Wang
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA
| | - Yongfeng Luo
- Department of Surgery, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90027, USA
| | - Laertis Ikonomou
- Department of Oral Biology, School of Dental Medicine, University at Buffalo, Buffalo, NY, 14260, USA
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14215, USA
| | - Wei Shi
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Darrell N Kotton
- Center for Regenerative Medicine of Boston University and Boston Medical Center, Boston, MA, 02118, USA.
- The Pulmonary Center and Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA.
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6
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Prenatal Diagnosis of Talipes Equinovarus by Ultrasound and Chromosomal Microarray Analysis: A Chinese Single-Center Retrospective Study. Genes (Basel) 2022; 13:genes13091573. [PMID: 36140741 PMCID: PMC9498837 DOI: 10.3390/genes13091573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/24/2022] [Accepted: 08/29/2022] [Indexed: 12/03/2022] Open
Abstract
Background: There are few studies on the detection rate by chromosomal microarray analysis (CMA) of the prenatal diagnosis of talipes equinovarus (TE) compared to conventional karyotyping. We aimed to explore the molecular etiology of fetal TE and examine the detection rate by CMA, which provides more information for the clinical screening and genetic counseling of TE. Methods: In this retrospective study, pregnancies diagnosed with fetal TE were enrolled and clinical data for all cases were retrieved from our medical record database, including demographic data for pregnancies, ultrasound findings, karyotype/CMA results, and pregnant and perinatal outcomes. Results: Among the 164 patients, 17 (10.4%) clinically significant variants were detected by CMA. In 148 singleton pregnancies, the diagnostic rate of clinically significant variants was significantly higher in the non-isolated TE group than in the isolated TE group (10/37, 27.0% vs. 6/111, 5.4%, P < 0.001). In twin pregnancies, 1 (6.3%) pathogenic copy number variant was present in the other 16 twin pregnancies. Conclusions: This study demonstrates that CMA is useful for the prenatal genetic diagnosis of fetal TE. Fetal TE with the associated structural malformation correlates with a higher probability of clinically significant variants. This data may aid prenatal diagnosis and genetic counseling for fetal TE.
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7
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Liang N, Deme L, Kong Q, Sun L, Cao Y, Wu T, Huang X, Xu S, Yang G. Divergence of Tbx4 hindlimb enhancer HLEA underlies the hindlimb loss during cetacean evolution. Genomics 2022; 114:110292. [DOI: 10.1016/j.ygeno.2022.110292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/13/2022] [Accepted: 02/01/2022] [Indexed: 11/04/2022]
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8
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Yıldız Bölükbaşı E, Karolak JA, Szafranski P, Gambin T, Murik O, Zeevi DA, Altarescu G, Stankiewicz P. Exacerbation of mild lung disorders to lethal pulmonary hypoplasia by a noncoding hypomorphic SNV in a lung-specific enhancer in trans to the frameshifting TBX4 variant. Am J Med Genet A 2022; 188:1420-1425. [PMID: 35075769 PMCID: PMC8995354 DOI: 10.1002/ajmg.a.62656] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/20/2021] [Accepted: 12/30/2021] [Indexed: 12/26/2022]
Abstract
Variants involving TBX4 are associated with a wide variety of disorders, including pulmonary arterial hypertension, ischiocoxopodopatellar syndrome (ICPPS)/small patella syndrome (SPS), lethal lung developmental disorders (LLDDs) in neonates, heart defects, and prenatally lethal posterior amelia with pelvic and pulmonary hypoplasia syndrome. The objective of our study was to elucidate the wide variable phenotypic expressivity and incomplete penetrance in a three-generation family with a truncating variant in TBX4. In addition to exome and genome sequencing analyses, a candidate noncoding regulatory single nucleotide variant (SNV) within the lung-specific TBX4 enhancer was functionally tested using an in vitro luciferase reporter assay. A heterozygous frameshift variant c.1112dup (p.Pro372Serfs*14) in TBX4 was identified in patients with mild interstitial lung disease (1), bronchiolitis obliterans (1), recurrent pneumothorax (1), ICPPS/SPS (1), LLDD (2), and in unaffected individuals (4). In two deceased neonates with LLDD, we identified a noncoding SNV rs62069651-C located in trans to the mutated TBX4 allele that reduced the TBX4 promoter activity by 63% in the reporter assay. Our findings provide a functional evidence for the recently reported model of complex compound inheritance in which both TBX4 coding and in trans noncoding hypomorphic variants in the lung-specific enhancer of TBX4 contribute to LLDD.
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Affiliation(s)
- Esra Yıldız Bölükbaşı
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Justyna A Karolak
- Chair and Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Poznan, Poland
| | - Przemyslaw Szafranski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Tomasz Gambin
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA.,Institute of Computer Science, Warsaw University of Technology, Warsaw, Poland
| | - Omer Murik
- Translational Genomics Lab, Medical Genetics Institute, Shaare Zedek Medical Center, Jerusalem, Israel
| | - David A Zeevi
- Translational Genomics Lab, Medical Genetics Institute, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Gheona Altarescu
- Preimplantation Genetic Unit, Medical Genetics Institute, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Paweł Stankiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
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9
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Hordyjewska-Kowalczyk E, Nowosad K, Jamsheer A, Tylzanowski P. Genotype-phenotype correlation in clubfoot (talipes equinovarus). J Med Genet 2021; 59:209-219. [PMID: 34782442 DOI: 10.1136/jmedgenet-2021-108040] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 10/21/2021] [Indexed: 12/21/2022]
Abstract
Clubfoot (talipes equinovarus) is a congenital malformation affecting muscles, bones, connective tissue and vascular or neurological structures in limbs. It has a complex aetiology, both genetic and environmental. To date, the most important findings in clubfoot genetics involve PITX1 variants, which were linked to clubfoot phenotype in mice and humans. Additionally, copy number variations encompassing TBX4 or single nucleotide variants in HOXC11, the molecular targets of the PITX1 transcription factor, were linked to the clubfoot phenotype. In general, genes of cytoskeleton and muscle contractile apparatus, as well as components of the extracellular matrix and connective tissue, are frequently linked with clubfoot aetiology. Last but not least, an equally important element, that brings us closer to a better understanding of the clubfoot genotype/phenotype correlation, are studies on the two known animal models of clubfoot-the pma or EphA4 mice. This review will summarise the current state of knowledge of the molecular basis of this congenital malformation.
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Affiliation(s)
- Ewa Hordyjewska-Kowalczyk
- Department of Biomedical Sciences, Laboratory of Molecular Genetics, Medical University of Lublin, Lublin, Lubelskie, Poland
| | - Karol Nowosad
- Department of Biomedical Sciences, Laboratory of Molecular Genetics, Medical University of Lublin, Lublin, Lubelskie, Poland.,The Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland.,Department of Cell Biology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Aleksander Jamsheer
- Department of Medical Genetics, Poznan University of Medical Sciences, Poznan, Wielkopolskie, Poland
| | - Przemko Tylzanowski
- Department of Biomedical Sciences, Laboratory of Molecular Genetics, Medical University of Lublin, Lublin, Lubelskie, Poland .,Department of Development and Regeneration, Skeletal Biology and Engineering Research Centre, KU Leuven, Leuven, Flanders, Belgium
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10
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Royle SR, Tabin CJ, Young JJ. Limb positioning and initiation: An evolutionary context of pattern and formation. Dev Dyn 2021; 250:1264-1279. [PMID: 33522040 PMCID: PMC10623539 DOI: 10.1002/dvdy.308] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/23/2021] [Accepted: 01/25/2021] [Indexed: 12/22/2022] Open
Abstract
Before limbs or fins, can be patterned and grow they must be initiated. Initiation of the limb first involves designating a portion of lateral plate mesoderm along the flank as the site of the future limb. Following specification, a myriad of cellular and molecular events interact to generate a bud that will grow and form the limb. The past three decades has provided a wealth of understanding on how those events generate the limb bud and how variations in them result in different limb forms. Comparatively, much less attention has been given to the earliest steps of limb formation and what impacts altering the position and initiation of the limb have had on evolution. Here, we first review the processes and pathways involved in these two phases of limb initiation, as determined from amniote model systems. We then broaden our scope to examine how variation in the limb initiation module has contributed to biological diversity in amniotes. Finally, we review what is known about limb initiation in fish and amphibians, and consider what mechanisms are conserved across vertebrates.
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Affiliation(s)
- Samantha R Royle
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts, USA
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, USA
| | - Clifford J Tabin
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts, USA
| | - John J Young
- Department of Biology, Simmons University, Boston, Massachusetts, USA
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11
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Thompson AW, Hawkins MB, Parey E, Wcisel DJ, Ota T, Kawasaki K, Funk E, Losilla M, Fitch OE, Pan Q, Feron R, Louis A, Montfort J, Milhes M, Racicot BL, Childs KL, Fontenot Q, Ferrara A, David SR, McCune AR, Dornburg A, Yoder JA, Guiguen Y, Roest Crollius H, Berthelot C, Harris MP, Braasch I. The bowfin genome illuminates the developmental evolution of ray-finned fishes. Nat Genet 2021; 53:1373-1384. [PMID: 34462605 PMCID: PMC8423624 DOI: 10.1038/s41588-021-00914-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 07/13/2021] [Indexed: 02/07/2023]
Abstract
The bowfin (Amia calva) is a ray-finned fish that possesses a unique suite of ancestral and derived phenotypes, which are key to understanding vertebrate evolution. The phylogenetic position of bowfin as a representative of neopterygian fishes, its archetypical body plan and its unduplicated and slowly evolving genome make bowfin a central species for the genomic exploration of ray-finned fishes. Here we present a chromosome-level genome assembly for bowfin that enables gene-order analyses, settling long-debated neopterygian phylogenetic relationships. We examine chromatin accessibility and gene expression through bowfin development to investigate the evolution of immune, scale, respiratory and fin skeletal systems and identify hundreds of gene-regulatory loci conserved across vertebrates. These resources connect developmental evolution among bony fishes, further highlighting the bowfin's importance for illuminating vertebrate biology and diversity in the genomic era.
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Affiliation(s)
- Andrew W Thompson
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA
- Ecology, Evolution & Behavior Program, Michigan State University, East Lansing, MI, USA
| | - M Brent Hawkins
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Orthopedic Research, Boston Children's Hospital, Boston, MA, USA
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA
- Museum of Comparative Zoology, Harvard University, Cambridge, MA, USA
| | - Elise Parey
- Institut de Biologie de l'ENS (IBENS), Département de Biologie, École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, France
| | - Dustin J Wcisel
- Department of Molecular Biomedical Sciences, NC State University, Raleigh, NC, USA
| | - Tatsuya Ota
- Department of Evolutionary Studies of Biosystems, SOKENDAI (the Graduate University for Advanced Studies), Hayama, Japan
| | - Kazuhiko Kawasaki
- Department of Anthropology, Pennsylvania State University, University Park, PA, USA
| | - Emily Funk
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
- Animal Science Department, University of California Davis, Davis, CA, USA
| | - Mauricio Losilla
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA
- Ecology, Evolution & Behavior Program, Michigan State University, East Lansing, MI, USA
| | - Olivia E Fitch
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA
- Ecology, Evolution & Behavior Program, Michigan State University, East Lansing, MI, USA
| | - Qiaowei Pan
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Romain Feron
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Alexandra Louis
- Institut de Biologie de l'ENS (IBENS), Département de Biologie, École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, France
| | | | - Marine Milhes
- GeT-PlaGe, INRAE, Genotoul, Castanet-Tolosan, France
| | - Brett L Racicot
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA
| | - Kevin L Childs
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA
| | - Quenton Fontenot
- Department of Biological Sciences, Nicholls State University, Thibodaux, LA, USA
| | - Allyse Ferrara
- Department of Biological Sciences, Nicholls State University, Thibodaux, LA, USA
| | - Solomon R David
- Department of Biological Sciences, Nicholls State University, Thibodaux, LA, USA
| | - Amy R McCune
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
| | - Alex Dornburg
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Jeffrey A Yoder
- Department of Molecular Biomedical Sciences, NC State University, Raleigh, NC, USA
- Comparative Medicine Institute, NC State University, Raleigh, NC, USA
- Center for Human Health and the Environment, NC State University, Raleigh, NC, USA
| | | | - Hugues Roest Crollius
- Institut de Biologie de l'ENS (IBENS), Département de Biologie, École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, France
| | - Camille Berthelot
- Institut de Biologie de l'ENS (IBENS), Département de Biologie, École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, France
| | - Matthew P Harris
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Orthopedic Research, Boston Children's Hospital, Boston, MA, USA
| | - Ingo Braasch
- Department of Integrative Biology, Michigan State University, East Lansing, MI, USA.
- Ecology, Evolution & Behavior Program, Michigan State University, East Lansing, MI, USA.
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12
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Bernau K, Leet JP, Bruhn EM, Tubbs AJ, Zhu T, Sandbo N. Expression of serum response factor in the lung mesenchyme is essential for development of pulmonary fibrosis. Am J Physiol Lung Cell Mol Physiol 2021; 321:L174-L188. [PMID: 33978489 PMCID: PMC8321854 DOI: 10.1152/ajplung.00323.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Extracellular matrix deposition characterizes idiopathic pulmonary fibrosis (IPF) and is orchestrated by myofibroblasts. The lung mesenchyme is an essential source of myofibroblasts in pulmonary fibrosis. Although the transcription factor serum response factor (SRF) has shown to be critical in the process of myofibroblast differentiation, its role in development of pulmonary fibrosis has not been determined in vivo. In this study, we observed that SRF expression localized to mesenchymal compartments, areas of dense fibrosis, and fibroblastic foci in human (IPF and normal) and bleomycin-treated mouse lungs. To determine the role of mesenchymal SRF in pulmonary fibrosis, we utilized a doxycycline-inducible, Tbx4 lung enhancer (Tbx4LE)-driven Cre-recombinase to disrupt SRF expression in the lung mesenchyme in vivo. Doxycycline-treated Tbx4LE-rtTA/TetO-Cre/tdTom/SRFf,f (and controls) were treated with a single intratracheal dose of bleomycin to induce pulmonary fibrosis and examined for lung mesenchymal expansion, pulmonary fibrosis, and inflammatory response. Bleomycin-treated Tbx4LE-rtTA/TetO-Cre/tdTom/SRFf,f mice showed decreased numbers of Tbx4LE-positive lung mesenchymal cells (LMCs) and collagen accumulation (via hydroxyproline assay) compared with controls. This effect was associated with SRF-null LMCs losing their proliferative and myofibroblast differentiation potential compared with SRF-positive controls. Together, these data demonstrate that SRF plays a critical role in LMC myofibroblast expansion during bleomycin-induced pulmonary fibrosis. This sets the stage for pharmacological strategies that specifically target SRF in the lung mesenchyme as a potential means of treating pulmonary fibrosis.
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Affiliation(s)
- Ksenija Bernau
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Jonathan Paul Leet
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Ellen Marie Bruhn
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Austin James Tubbs
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Terry Zhu
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Nathan Sandbo
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
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13
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Bayramov AV, Ermakova GV, Kuchryavyy AV, Zaraisky AG. Genome Duplications as the Basis of Vertebrates’ Evolutionary Success. Russ J Dev Biol 2021. [DOI: 10.1134/s1062360421030024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Abstract
Shadow enhancers are seemingly redundant transcriptional cis-regulatory elements that regulate the same gene and drive overlapping expression patterns. Recent studies have shown that shadow enhancers are remarkably abundant and control most developmental gene expression in both invertebrates and vertebrates, including mammals. Shadow enhancers might provide an important mechanism for buffering gene expression against mutations in non-coding regulatory regions of genes implicated in human disease. Technological advances in genome editing and live imaging have shed light on how shadow enhancers establish precise gene expression patterns and confer phenotypic robustness. Shadow enhancers can interact in complex ways and may also help to drive the formation of transcriptional hubs within the nucleus. Despite their apparent redundancy, the prevalence and evolutionary conservation of shadow enhancers underscore their key role in emerging metazoan gene regulatory networks.
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15
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Sucu M, Demir SC. The relationship between isolated pes equinovarus and aneuploidies and perinatal outcomes: Results of a tertiary center. Turk J Obstet Gynecol 2020; 17:270-277. [PMID: 33343973 PMCID: PMC7731604 DOI: 10.4274/tjod.galenos.2020.60669] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 11/30/2020] [Indexed: 01/08/2023] Open
Abstract
Objective Congenital pes equinovarus (PEV) is the most common congenital deformity of the foot, characterized by plantar flexion with a frequency of 0.2-0.3%. It can be diagnosed from the 12th week of pregnancy. Non-isolated cases tend to be syndromic and complex. We aimed to evaluate the results of perinatally diagnosed isolated PEV. Materials and Methods This was a retrospective cohort study conducted between March 2015-March 2020. Women who presented for fetal anomaly screening or were referred due to any suspected fetal anomaly were subjected to detailed fetal anomaly scans and checked for the presence of PEV. Karyotype analysis was discussed for patients with PEV. Pregnancy termination was recommended for those with chromosomal/life-threatening anomalies. The diagnosis was confirmed by postnatal examination/autopsy. Postnatal diagnosis was accepted as false-positive in those with no PEV. Results One-hundred thirty-eight patients were found to have PEV, 41 (29.7%) of which were isolated. In the isolated group, the false-positive rate in the first trimester was significantly higher compared with the second trimester, 50%/15.3%, respectively (p<0.05). Chromosomal anomalies were detected in 2 (4.8%) patients in the isolated group. Termination was performed to 1 (2.4%) patients due to trisomy 21. In the non-isolated group, chromosomal anomalies were detected in 13 (13.4%) patients, and termination was recommended. Termination was also recommended to 18 (18.5%) patients due to anomalies incompatible with life. In the postnatal evaluation, the surgical treatment rate in the isolated/non-isolated groups was 6%/39.7% (p<0.05). Conclusion When PEV is diagnosed, detailed fetal anomaly screening must be performed, patients should be informed about the chromosomal anomaly risk. High false-positive rates in the first trimester should be kept in mind for diagnosis. Karyotype analysis should be recommended also to isolated cases. It should be remembered that some neuromuscular/skeletal system anomalies may occur for the first time in the postnatal period in isolated cases.
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Affiliation(s)
- Mete Sucu
- Çukurova University Faculty of Medicine, Department of Obstetrics and Gynecology, Adana, Turkey
| | - Süleyman Cansun Demir
- Çukurova University Faculty of Medicine, Department of Obstetrics and Gynecology, Adana, Turkey
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16
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Kishimoto K, Furukawa KT, Luz-Madrigal A, Yamaoka A, Matsuoka C, Habu M, Alev C, Zorn AM, Morimoto M. Bidirectional Wnt signaling between endoderm and mesoderm confers tracheal identity in mouse and human cells. Nat Commun 2020; 11:4159. [PMID: 32855415 PMCID: PMC7453000 DOI: 10.1038/s41467-020-17969-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 07/24/2020] [Indexed: 12/20/2022] Open
Abstract
The periodic cartilage and smooth muscle structures in mammalian trachea are derived from tracheal mesoderm, and tracheal malformations result in serious respiratory defects in neonates. Here we show that canonical Wnt signaling in mesoderm is critical to confer trachea mesenchymal identity in human and mouse. At the initiation of tracheal development, endoderm begins to express Nkx2.1, and then mesoderm expresses the Tbx4 gene. Loss of β-catenin in fetal mouse mesoderm causes loss of Tbx4+ tracheal mesoderm and tracheal cartilage agenesis. The mesenchymal Tbx4 expression relies on endodermal Wnt activation and Wnt ligand secretion but is independent of known Nkx2.1-mediated respiratory development, suggesting that bidirectional Wnt signaling between endoderm and mesoderm promotes trachea development. Activating Wnt, Bmp signaling in mouse embryonic stem cell (ESC)-derived lateral plate mesoderm (LPM) generates tracheal mesoderm containing chondrocytes and smooth muscle cells. For human ESC-derived LPM, SHH activation is required along with WNT to generate proper tracheal mesoderm. Together, these findings may contribute to developing applications for human tracheal tissue repair.
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Affiliation(s)
- Keishi Kishimoto
- Laboratory for Lung Development and Regeneration, Riken Center for Biosystems Dynamics Research (BDR), Kobe, 650-0047, Japan
- RIKEN BDR-CuSTOM Joint Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Center for Stem Cell & Organoid Medicine (CuSTOM), Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Kana T Furukawa
- Laboratory for Lung Development and Regeneration, Riken Center for Biosystems Dynamics Research (BDR), Kobe, 650-0047, Japan
| | - Agustin Luz-Madrigal
- Center for Stem Cell & Organoid Medicine (CuSTOM), Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Akira Yamaoka
- Laboratory for Lung Development and Regeneration, Riken Center for Biosystems Dynamics Research (BDR), Kobe, 650-0047, Japan
| | - Chisa Matsuoka
- Laboratory for Lung Development and Regeneration, Riken Center for Biosystems Dynamics Research (BDR), Kobe, 650-0047, Japan
| | - Masanobu Habu
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
| | - Cantas Alev
- Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, 606-8507, Japan
- Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University, Kyoto, 606-8501, Japan
| | - Aaron M Zorn
- RIKEN BDR-CuSTOM Joint Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Center for Stem Cell & Organoid Medicine (CuSTOM), Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Mitsuru Morimoto
- Laboratory for Lung Development and Regeneration, Riken Center for Biosystems Dynamics Research (BDR), Kobe, 650-0047, Japan.
- RIKEN BDR-CuSTOM Joint Laboratory, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA.
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17
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Nasoori A. Formation, structure, and function of extra-skeletal bones in mammals. Biol Rev Camb Philos Soc 2020; 95:986-1019. [PMID: 32338826 DOI: 10.1111/brv.12597] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 03/07/2020] [Accepted: 03/17/2020] [Indexed: 12/12/2022]
Abstract
This review describes the formation, structure, and function of bony compartments in antlers, horns, ossicones, osteoderm and the os penis/os clitoris (collectively referred to herein as AHOOO structures) in extant mammals. AHOOOs are extra-skeletal bones that originate from subcutaneous (dermal) tissues in a wide variety of mammals, and this review elaborates on the co-development of the bone and skin in these structures. During foetal stages, primordial cells for the bony compartments arise in subcutaneous tissues. The epithelial-mesenchymal transition is assumed to play a key role in the differentiation of bone, cartilage, skin and other tissues in AHOOO structures. AHOOO ossification takes place after skeletal bone formation, and may depend on sexual maturity. Skin keratinization occurs in tandem with ossification and may be under the control of androgens. Both endochondral and intramembranous ossification participate in bony compartment formation. There is variation in gradients of density in different AHOOO structures. These gradients, which vary according to function and species, primarily reduce mechanical stress. Anchorage of AHOOOs to their surrounding tissues fortifies these structures and is accomplished by bone-bone fusion and Sharpey fibres. The presence of the integument is essential for the protection and function of the bony compartments. Three major functions can be attributed to AHOOOs: mechanical, visual, and thermoregulatory. This review provides the first extensive comparative description of the skeletal and integumentary systems of AHOOOs in a variety of mammals.
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Affiliation(s)
- Alireza Nasoori
- School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan
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18
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Rolian C. Endochondral ossification and the evolution of limb proportions. WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY 2020; 9:e373. [PMID: 31997553 DOI: 10.1002/wdev.373] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 12/09/2019] [Accepted: 01/07/2020] [Indexed: 12/15/2022]
Abstract
Mammals have remarkably diverse limb proportions hypothesized to have evolved adaptively in the context of locomotion and other behaviors. Mechanistically, evolutionary diversity in limb proportions is the result of differential limb bone growth. Longitudinal limb bone growth is driven by the process of endochondral ossification, under the control of the growth plates. In growth plates, chondrocytes undergo a tightly orchestrated life cycle of proliferation, matrix production, hypertrophy, and cell death/transdifferentiation. This life cycle is highly conserved, both among the long bones of an individual, and among homologous bones of distantly related taxa, leading to a finite number of complementary cell mechanisms that can generate heritable phenotype variation in limb bone size and shape. The most important of these mechanisms are chondrocyte population size in chondrogenesis and in individual growth plates, proliferation rates, and hypertrophic chondrocyte size. Comparative evidence in mammals and birds suggests the existence of developmental biases that favor evolutionary changes in some of these cellular mechanisms over others in driving limb allometry. Specifically, chondrocyte population size may evolve more readily in response to selection than hypertrophic chondrocyte size, and extreme hypertrophy may be a rarer evolutionary phenomenon associated with highly specialized modes of locomotion in mammals (e.g., powered flight, ricochetal bipedal hopping). Physical and physiological constraints at multiple levels of biological organization may also have influenced the cell developmental mechanisms that have evolved to produce the highly diverse limb proportions in extant mammals. This article is categorized under: Establishment of Spatial and Temporal Patterns > Regulation of Size, Proportion, and Timing Comparative Development and Evolution > Regulation of Organ Diversity Comparative Development and Evolution > Organ System Comparisons Between Species.
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Affiliation(s)
- Campbell Rolian
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
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19
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Kjosness KM, Reno PL. Identifying the homology of the short human pisiform and its lost ossification center. EvoDevo 2019; 10:32. [PMID: 31788181 PMCID: PMC6876086 DOI: 10.1186/s13227-019-0145-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 11/05/2019] [Indexed: 01/14/2023] Open
Abstract
Background The pisiform and calcaneus are paralogous bones of the wrist and ankle and are the only carpal and tarsal, respectively, to develop from two ossification centers with an associated growth plate in mammals. Human pisiforms and calcanei have undergone drastic evolutionary changes since our last common ancestor with chimpanzees and bonobos. The human pisiform is truncated and has lost an ossification center with the associated growth plate, while the human calcaneus has expanded and retained two ossification centers and a growth plate. Mammalian pisiforms represent a wide range of morphologies but extremely short pisiforms are rare and ossification center loss is even rarer. This raises the question of whether the sole human pisiform ossification center is homologous to the primary center or the secondary center of other species. We performed an ontogenetic study of pisiform and calcaneus ossification patterns and timing in macaques, apes, and humans (n = 907) from museum skeletal collections to address this question. Results Human pisiforms ossify irregularly and lack characteristic features of other primates while they develop. Pisiform primary and secondary center ossification timing typically matches that of the calcaneus of non-human primates, while the human pisiform corresponds with calcaneal secondary center ossification. Finally, human pisiforms ossify at the same dental stages as pisiform and calcaneal secondary centers in other hominoids. Conclusions These data indicate that the human pisiform is homologous to the pisiform epiphysis of other species, and that humans have lost a primary ossification center and associated growth plate while retaining ossification timing of the secondary center. This represents an exceptional evolutionary event and demonstrates a profound developmental change in the human wrist that is unusual not only among primates, but among mammals.
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Affiliation(s)
- Kelsey M Kjosness
- Department of Bio-Medical Sciences, Philadelphia College of Osteopathic Medicine, 4170 City Avenue, Philadelphia, PA 19131 USA
| | - Philip L Reno
- Department of Bio-Medical Sciences, Philadelphia College of Osteopathic Medicine, 4170 City Avenue, Philadelphia, PA 19131 USA
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20
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Genome Sequencing of the Japanese Eel ( Anguilla japonica) for Comparative Genomic Studies on tbx4 and a tbx4 Gene Cluster in Teleost Fishes. Mar Drugs 2019; 17:md17070426. [PMID: 31330852 PMCID: PMC6669545 DOI: 10.3390/md17070426] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/17/2019] [Accepted: 07/18/2019] [Indexed: 01/08/2023] Open
Abstract
Limbs originated from paired fish fins are an important innovation in Gnathostomata. Many studies have focused on limb development-related genes, of which the T-box transcription factor 4 gene (tbx4) has been considered as one of the most essential factors in the regulation of the hindlimb development. We previously confirmed pelvic fin loss in tbx4-knockout zebrafish. Here, we report a high-quality genome assembly of the Japanese eel (Anguilla japonica), which is an economically important fish without pelvic fins. The assembled genome is 1.13 Gb in size, with a scaffold N50 of 1.03 Mb. In addition, we collected 24 tbx4 sequences from 22 teleost fishes to explore the correlation between tbx4 and pelvic fin evolution. However, we observed complete exon structures of tbx4 in several pelvic-fin-loss species such as Ocean sunfish (Mola mola) and ricefield eel (Monopterus albus). More interestingly, an inversion of a special tbx4 gene cluster (brip1-tbx4-tbx2b- bcas3) occurred twice independently, which coincides with the presence of fin spines. A nonsynonymous mutation (M82L) was identified in the nuclear localization sequence (NLS) of the Japanese eel tbx4. We also examined variation and loss of hindlimb enhancer B (HLEB), which may account for pelvic fin loss in Tetraodontidae and Diodontidae. In summary, we generated a genome assembly of the Japanese eel, which provides a valuable genomic resource to study the evolution of fish tbx4 and helps elucidate the mechanism of pelvic fin loss in teleost fishes. Our comparative genomic studies, revealed for the first time a potential correlation between the tbx4 gene cluster and the evolutionary development of toxic fin spines. Because fin spines in teleosts are usually venoms, this tbx4 gene cluster may facilitate the genetic engineering of toxin-related marine drugs.
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21
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Onimaru K, Kuraku S. Inference of the ancestral vertebrate phenotype through vestiges of the whole-genome duplications. Brief Funct Genomics 2019; 17:352-361. [PMID: 29566222 PMCID: PMC6158797 DOI: 10.1093/bfgp/ely008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Inferring the phenotype of the last common ancestor of living vertebrates is a challenging problem because of several unresolvable factors. They include the lack of reliable out-groups of living vertebrates, poor information about less fossilizable organs and specialized traits of phylogenetically important species, such as lampreys and hagfishes (e.g. secondary loss of vertebrae in adult hagfishes). These factors undermine the reliability of ancestral reconstruction by traditional character mapping approaches based on maximum parsimony. In this article, we formulate an approach to hypothesizing ancestral vertebrate phenotypes using information from the phylogenetic and functional properties of genes duplicated by genome expansions in early vertebrate evolution. We named the conjecture as ‘chronological reconstruction of ohnolog functions (CHROF)’. This CHROF conjecture raises the possibility that the last common ancestor of living vertebrates may have had more complex traits than currently thought.
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Affiliation(s)
- Koh Onimaru
- RIKEN Center for Life Science Technologies, Kobe, Hyogo Japan.,Department of biological science, Tokyo Institute of Technology, Tokyo, Japan
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22
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Karolak JA, Vincent M, Deutsch G, Gambin T, Cogné B, Pichon O, Vetrini F, Mefford HC, Dines JN, Golden-Grant K, Dipple K, Freed AS, Leppig KA, Dishop M, Mowat D, Bennetts B, Gifford AJ, Weber MA, Lee AF, Boerkoel CF, Bartell TM, Ward-Melver C, Besnard T, Petit F, Bache I, Tümer Z, Denis-Musquer M, Joubert M, Martinovic J, Bénéteau C, Molin A, Carles D, André G, Bieth E, Chassaing N, Devisme L, Chalabreysse L, Pasquier L, Secq V, Don M, Orsaria M, Missirian C, Mortreux J, Sanlaville D, Pons L, Küry S, Bézieau S, Liet JM, Joram N, Bihouée T, Scott DA, Brown CW, Scaglia F, Tsai ACH, Grange DK, Phillips JA, Pfotenhauer JP, Jhangiani SN, Gonzaga-Jauregui CG, Chung WK, Schauer GM, Lipson MH, Mercer CL, van Haeringen A, Liu Q, Popek E, Coban Akdemir ZH, Lupski JR, Szafranski P, Isidor B, Le Caignec C, Stankiewicz P. Complex Compound Inheritance of Lethal Lung Developmental Disorders Due to Disruption of the TBX-FGF Pathway. Am J Hum Genet 2019; 104:213-228. [PMID: 30639323 DOI: 10.1016/j.ajhg.2018.12.010] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/13/2018] [Indexed: 12/24/2022] Open
Abstract
Primary defects in lung branching morphogenesis, resulting in neonatal lethal pulmonary hypoplasias, are incompletely understood. To elucidate the pathogenetics of human lung development, we studied a unique collection of samples obtained from deceased individuals with clinically and histopathologically diagnosed interstitial neonatal lung disorders: acinar dysplasia (n = 14), congenital alveolar dysplasia (n = 2), and other lethal lung hypoplasias (n = 10). We identified rare heterozygous copy-number variant deletions or single-nucleotide variants (SNVs) involving TBX4 (n = 8 and n = 2, respectively) or FGF10 (n = 2 and n = 2, respectively) in 16/26 (61%) individuals. In addition to TBX4, the overlapping ∼2 Mb recurrent and nonrecurrent deletions at 17q23.1q23.2 identified in seven individuals with lung hypoplasia also remove a lung-specific enhancer region. Individuals with coding variants involving either TBX4 or FGF10 also harbored at least one non-coding SNV in the predicted lung-specific enhancer region, which was absent in 13 control individuals with the overlapping deletions but without any structural lung anomalies. The occurrence of rare coding variants involving TBX4 or FGF10 with the putative hypomorphic non-coding SNVs implies a complex compound inheritance of these pulmonary hypoplasias. Moreover, they support the importance of TBX4-FGF10-FGFR2 epithelial-mesenchymal signaling in human lung organogenesis and help to explain the histopathological continuum observed in these rare lethal developmental disorders of the lung.
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MESH Headings
- DNA Copy Number Variations/genetics
- Female
- Fibroblast Growth Factor 10/genetics
- Fibroblast Growth Factor 10/metabolism
- Gene Expression Regulation
- Gestational Age
- Humans
- Infant, Newborn
- Infant, Newborn, Diseases/genetics
- Infant, Newborn, Diseases/metabolism
- Infant, Newborn, Diseases/mortality
- Infant, Newborn, Diseases/pathology
- Lung/embryology
- Lung/growth & development
- Lung Diseases/genetics
- Lung Diseases/metabolism
- Lung Diseases/mortality
- Lung Diseases/pathology
- Male
- Maternal Inheritance
- Organogenesis
- Paternal Inheritance
- Pedigree
- Polymorphism, Single Nucleotide/genetics
- Receptor, Fibroblast Growth Factor, Type 2/metabolism
- Signal Transduction/genetics
- T-Box Domain Proteins/genetics
- T-Box Domain Proteins/metabolism
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Affiliation(s)
- Justyna A Karolak
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, 60-781 Poznan, Poland
| | - Marie Vincent
- Service de Génétique Médicale, CHU de Nantes, 44000 Nantes, France; Inserm, CNRS, Univ Nantes, l'institut du thorax, 44000 Nantes, France
| | - Gail Deutsch
- Department of Pathology, Seattle Children's Hospital, Seattle, WA 98105, USA
| | - Tomasz Gambin
- Department of Medical Genetics, Institute of Mother and Child, 01-211 Warsaw, Poland; Institute of Computer Science, Warsaw University of Technology, 00-665 Warsaw, Poland
| | - Benjamin Cogné
- Service de Génétique Médicale, CHU de Nantes, 44000 Nantes, France; Inserm, CNRS, Univ Nantes, l'institut du thorax, 44000 Nantes, France
| | - Olivier Pichon
- Service de Génétique Médicale, CHU de Nantes, 44000 Nantes, France
| | | | - Heather C Mefford
- Department of Pediatrics, Division of Genetic Medicine, University of Washington, Seattle, WA 98195, USA
| | - Jennifer N Dines
- Department of Pediatrics, Division of Genetic Medicine, University of Washington, Seattle, WA 98195, USA; Department of Medicine, Division of Medical Genetics, University of Washington, Seattle, WA 98195, USA
| | - Katie Golden-Grant
- Division of Genetic Medicine, Seattle Children's Hospital, Seattle, WA 98105, USA
| | - Katrina Dipple
- Department of Pediatrics, Division of Genetic Medicine, University of Washington, Seattle, WA 98195, USA; Division of Genetic Medicine, Seattle Children's Hospital, Seattle, WA 98105, USA
| | - Amanda S Freed
- Department of Pediatrics, Division of Genetic Medicine, University of Washington, Seattle, WA 98195, USA; Department of Medicine, Division of Medical Genetics, University of Washington, Seattle, WA 98195, USA
| | - Kathleen A Leppig
- Genetic Services Kaiser Permanente of Washington, Seattle, WA 98112, USA
| | - Megan Dishop
- Pathology and Laboratory Medicine, Phoenix Children's Hospital, Phoenix, AZ 85016, USA
| | - David Mowat
- Centre for Clinical Genetics, Sydney Children's Hospital, Randwick Sydney, NSW 2031 Australia; School of Women's and Children's Health, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Bruce Bennetts
- Discipline of Child & Adolescent Health, Sydney Medical School, University of Sydney, Sydney, NSW 2006, Australia; Molecular Genetics Department, Western Sydney Genetics Program, The Children's Hospital at Westmead, Sydney, NSW 2145, Australia; Discipline of Genetic Medicine, Sydney Medical School, University of Sydney, Sydney, NSW 2006, Australia
| | - Andrew J Gifford
- School of Women's and Children's Health, The University of New South Wales, Sydney, NSW 2052, Australia; Department of Anatomical Pathology, Prince of Wales Hospital, Randwick, NSW 2031, Australia
| | - Martin A Weber
- Department of Anatomical Pathology, Prince of Wales Hospital, Randwick, NSW 2031, Australia; School of Medical Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Anna F Lee
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC V6T 2B5, Canada
| | - Cornelius F Boerkoel
- Department of Medical Genetics, University of British Columbia, Vancouver, BC V6H 3N1, Canada
| | - Tina M Bartell
- Department of Genetics, Kaiser Permanente Sacramento Medical Center, Sacramento, CA 95815, USA
| | | | - Thomas Besnard
- Service de Génétique Médicale, CHU de Nantes, 44000 Nantes, France; Inserm, CNRS, Univ Nantes, l'institut du thorax, 44000 Nantes, France
| | - Florence Petit
- Service de Génétique Clinique, CHU Lille, 59000 Lille, France
| | - Iben Bache
- Department of Cellular and Molecular Medicine, University of Copenhagen, 2200 N Copenhagen, Denmark; Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet, 2100 Ø Copenhagen, Denmark
| | - Zeynep Tümer
- Kennedy Center, Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet, 2600 Glostrup, Copenhagen, Denmark; Deparment of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 N, Copenhagen, Denmark
| | | | | | - Jelena Martinovic
- Unit of Fetal Pathology, AP-HP, Antoine Beclere Hospital, 75000 Paris, France
| | - Claire Bénéteau
- Service de Génétique Médicale, CHU de Nantes, 44000 Nantes, France; Inserm, CNRS, Univ Nantes, l'institut du thorax, 44000 Nantes, France
| | - Arnaud Molin
- Service de Génétique Médicale, CHU Caen, 14000 Caen, France
| | - Dominique Carles
- Service d'anatomo-pathologie, CHU Bordeaux, 33000 Bordeaux, France
| | - Gwenaelle André
- Service d'anatomo-pathologie, CHU Bordeaux, 33000 Bordeaux, France
| | - Eric Bieth
- Service de génétique médicale, CHU Toulouse, France and UDEAR, UMR 1056 Inserm - Université de Toulouse, 31000 Toulouse, France
| | - Nicolas Chassaing
- Service de génétique médicale, CHU Toulouse, France and UDEAR, UMR 1056 Inserm - Université de Toulouse, 31000 Toulouse, France
| | | | | | | | - Véronique Secq
- Aix Marseille Univ, APHM, Hôpital Nord, Service d'anatomo-pathologie, 13000 Marseille, France
| | - Massimiliano Don
- Sant'Antonio General Hospital, Pediatric Care Unit, San Daniele del Friuli, 33100 Udine, Italy
| | - Maria Orsaria
- Department of Medical and Biological Sciences, Pathology Unit, University of Udine, Udine, Italy
| | - Chantal Missirian
- Aix Marseille Univ, APHM, INSERM, MMG, Marseille, Timone Hospital, 13000 Marseille, France
| | - Jérémie Mortreux
- Aix Marseille Univ, APHM, INSERM, MMG, Marseille, Timone Hospital, 13000 Marseille, France
| | - Damien Sanlaville
- Hospices Civils de Lyon, GHE, Genetics department, and Lyon University, 69000 Lyon, France
| | - Linda Pons
- Hospices Civils de Lyon, GHE, Genetics department, and Lyon University, 69000 Lyon, France
| | - Sébastien Küry
- Service de Génétique Médicale, CHU de Nantes, 44000 Nantes, France; Inserm, CNRS, Univ Nantes, l'institut du thorax, 44000 Nantes, France
| | - Stéphane Bézieau
- Service de Génétique Médicale, CHU de Nantes, 44000 Nantes, France; Inserm, CNRS, Univ Nantes, l'institut du thorax, 44000 Nantes, France
| | - Jean-Michel Liet
- Service de réanimation pédiatrique, CHU Nantes, 44000 Nantes, France
| | - Nicolas Joram
- Service de réanimation pédiatrique, CHU Nantes, 44000 Nantes, France
| | | | - Daryl A Scott
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA; Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Chester W Brown
- Department of Pediatrics, Genetics Division, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Fernando Scaglia
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA; Joint BCM-CUHK Center of Medical Genetics, Prince of Wales Hospital, ShaTin, New Territories, Hong Kong SAR
| | - Anne Chun-Hui Tsai
- Department of Pediatrics, The Children's Hospital, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Dorothy K Grange
- Department of Pediatrics, Division of Genetics and Genomic Medicine, Washington University School of Medicine, St. Louis Children's Hospital, St. Louis, MO 63110, USA
| | - John A Phillips
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Jean P Pfotenhauer
- Department of Pediatrics, Division of Medical Genetics and Genomic Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Shalini N Jhangiani
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | | | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University, New York, NY 10032, USA
| | - Galen M Schauer
- Department of Pathology, Kaiser Permanente Oakland Medical Center, Oakland, CA 94611, USA
| | - Mark H Lipson
- Department of Genetics, Kaiser Permanente Sacramento Medical Center, Sacramento, CA 95815, USA
| | - Catherine L Mercer
- Wessex Clinical Genetics Service, University Hospital Southampton NHS Foundation Trust, Princess Anne Hospital, Southampton SO16 5YA, UK
| | - Arie van Haeringen
- Department of Clinical Genetics, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Qian Liu
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Edwina Popek
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Zeynep H Coban Akdemir
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - James R Lupski
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA; Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA; Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Przemyslaw Szafranski
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Bertrand Isidor
- Service de Génétique Médicale, CHU de Nantes, 44000 Nantes, France; Inserm, CNRS, Univ Nantes, l'institut du thorax, 44000 Nantes, France
| | | | - Paweł Stankiewicz
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor Genetics, Houston, TX 77021, USA; Institute of Mother and Child, 01-211 Warsaw, Poland.
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23
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Thompson AC, Capellini TD, Guenther CA, Chan YF, Infante CR, Menke DB, Kingsley DM. A novel enhancer near the Pitx1 gene influences development and evolution of pelvic appendages in vertebrates. eLife 2018; 7:38555. [PMID: 30499775 PMCID: PMC6269122 DOI: 10.7554/elife.38555] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 11/12/2018] [Indexed: 12/29/2022] Open
Abstract
Vertebrate pelvic reduction is a classic example of repeated evolution. Recurrent loss of pelvic appendages in sticklebacks has previously been linked to natural mutations in a pelvic enhancer that maps upstream of Pitx1. The sequence of this upstream PelA enhancer is not conserved to mammals, so we have surveyed a large region surrounding the mouse Pitx1 gene for other possible hind limb control sequences. Here we identify a new pelvic enhancer, PelB, that maps downstream rather than upstream of Pitx1. PelB drives expression in the posterior portion of the developing hind limb, and deleting the sequence from mice alters the size of several hind limb structures. PelB sequences are broadly conserved from fish to mammals. A wild stickleback population lacking the pelvis has an insertion/deletion mutation that disrupts the structure and function of PelB, suggesting that changes in this ancient enhancer contribute to evolutionary modification of pelvic appendages in nature.
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Affiliation(s)
- Abbey C Thompson
- Department of Developmental Biology, Stanford University School of Medicine, California, United States.,Department of Genetics, Stanford University School of Medicine, California, United States
| | - Terence D Capellini
- Department of Developmental Biology, Stanford University School of Medicine, California, United States
| | - Catherine A Guenther
- Department of Developmental Biology, Stanford University School of Medicine, California, United States.,Howard Hughes Medical Institute, Stanford University, California, United States
| | - Yingguang Frank Chan
- Department of Developmental Biology, Stanford University School of Medicine, California, United States
| | - Carlos R Infante
- Department of Genetics, University of Georgia, Georgia, United States
| | - Douglas B Menke
- Department of Genetics, University of Georgia, Georgia, United States
| | - David M Kingsley
- Department of Developmental Biology, Stanford University School of Medicine, California, United States.,Howard Hughes Medical Institute, Stanford University, California, United States
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24
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Morioka S, Mohanty-Hejmadi P, Yaoita Y, Tazawa I. Homeotic transformation of tails into limbs in anurans. Dev Growth Differ 2018; 60:365-376. [PMID: 30133711 DOI: 10.1111/dgd.12547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 05/25/2018] [Accepted: 06/06/2018] [Indexed: 12/18/2022]
Abstract
Anuran tadpoles can regenerate their tails after amputation. However, they occasionally form ectopic limbs instead of the lost tail part after vitamin A treatment. This is regarded as an example of a homeotic transformation. In this phenomenon, the developmental fate of the tail blastema is apparently altered from that of a tail to that of limbs, indicating a realignment of positional information in the blastema. Morphological observations and analyses of the development of skeletal elements during the process suggest that positional information in the blastema is rewritten from tail to trunk specification under the influence of vitamin A, resulting in limb formation. Despite the extensive information gained from morphological observations, a comprehensive understanding of this phenomenon also requires molecular data. We review previous studies related to anuran homeotic transformation. The findings of these studies provide a basis for evaluating major hypotheses and identifying molecular data that should be prioritized in future studies. Finally, we argue that positional information for the tail blastema changes to that for a part of the trunk, leading to homeotic transformations. To suggest this hypothesis, we present published data that favor the rewriting of positional information.
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Affiliation(s)
- Sho Morioka
- Amphibian Research Center, Graduate School of Science, Hiroshima University, Higashihiroshima, Hiroshima, Japan
| | | | - Yoshio Yaoita
- Division of Embryology, Amphibian Research Center, Hiroshima University, Higashihiroshima, Hiroshima, Japan
| | - Ichiro Tazawa
- Division of Embryology, Amphibian Research Center, Hiroshima University, Higashihiroshima, Hiroshima, Japan
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25
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Pavone V, Chisari E, Vescio A, Lucenti L, Sessa G, Testa G. The etiology of idiopathic congenital talipes equinovarus: a systematic review. J Orthop Surg Res 2018; 13:206. [PMID: 30134936 PMCID: PMC6104023 DOI: 10.1186/s13018-018-0913-z] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 08/15/2018] [Indexed: 12/19/2022] Open
Abstract
Background Also known as clubfoot, idiopathic congenital talipes equinovarus (ICTEV) is the most common pediatric deformity and occurs in 1 in every 1000 live births. Even though it has been widely researched, the etiology of ICTEV remains poorly understood and is often described as being based on a multifactorial genesis. Genetic and environmental factors seem to have a major role in the development of this disease. Thus, the aim of this review is to analyze the available literature to document the current evidence on ICTEV etiology. Methods The literature on ICTEV etiology was systematically reviewed using the following inclusion criteria: studies of any level of evidence, reporting clinical or preclinical results, published in the last 20 years (1998–2018), and dealing with the etiology of ICTEV. Results A total of 48 articles were included. ICTEV etiology is still controversial. Several hypotheses have been researched, but none of them are decisive. Emerging evidence suggests a role of several pathways and gene families associated with limb development (HOX family; PITX1-TBX4), the apoptotic pathway (caspases), and muscle contractile protein (troponin and tropomyosin), but a major candidate gene has still not been identified. Strong recent evidence emerging from twin studies confirmed major roles of genetics and the environment in the disease pathogenesis. Conclusions The available literature on the etiology of ICTEV presents major limitations in terms of great heterogeneity and a lack of high-profile studies. Although many studies focus on the genetic background of the disease, there is lack of consensus on one or multiple targets. Genetics and smoking seem to be strongly associated with ICTEV etiology, but more studies are needed to understand the complex and multifactorial genesis of this common congenital lower-limb disease.
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Affiliation(s)
- Vito Pavone
- Department of General Surgery and Medical Surgical Specialties, Section of Orthopaedics and Traumatology, University Hospital Policlinico-Vittorio Emanuele, University of Catania, Via Plebiscito, 628, 95124, Catania, Italy
| | - Emanuele Chisari
- Department of General Surgery and Medical Surgical Specialties, Section of Orthopaedics and Traumatology, University Hospital Policlinico-Vittorio Emanuele, University of Catania, Via Plebiscito, 628, 95124, Catania, Italy
| | - Andrea Vescio
- Department of General Surgery and Medical Surgical Specialties, Section of Orthopaedics and Traumatology, University Hospital Policlinico-Vittorio Emanuele, University of Catania, Via Plebiscito, 628, 95124, Catania, Italy
| | - Ludovico Lucenti
- Department of General Surgery and Medical Surgical Specialties, Section of Orthopaedics and Traumatology, University Hospital Policlinico-Vittorio Emanuele, University of Catania, Via Plebiscito, 628, 95124, Catania, Italy
| | - Giuseppe Sessa
- Department of General Surgery and Medical Surgical Specialties, Section of Orthopaedics and Traumatology, University Hospital Policlinico-Vittorio Emanuele, University of Catania, Via Plebiscito, 628, 95124, Catania, Italy
| | - Gianluca Testa
- Department of General Surgery and Medical Surgical Specialties, Section of Orthopaedics and Traumatology, University Hospital Policlinico-Vittorio Emanuele, University of Catania, Via Plebiscito, 628, 95124, Catania, Italy.
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26
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Enhancer redundancy provides phenotypic robustness in mammalian development. Nature 2018; 554:239-243. [PMID: 29420474 PMCID: PMC5808607 DOI: 10.1038/nature25461] [Citation(s) in RCA: 382] [Impact Index Per Article: 63.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 12/18/2017] [Indexed: 12/30/2022]
Abstract
Distant-acting tissue-specific enhancers vastly outnumber protein-coding genes in mammalian genomes, but the functional significance of this regulatory complexity remains insufficiently understood1,2. Here we show that the pervasive presence of multiple enhancers with similar activities near the same gene confers phenotypic robustness to loss-of-function mutations in individual enhancers. We used genome editing to create 23 mouse deletion lines and inter-crosses, including both single and combinatorial enhancer deletions at seven distinct loci required for limb development. Surprisingly, none of ten deletions of individual enhancers caused noticeable changes in limb morphology. In contrast, removal of pairs of limb enhancers near the same gene resulted in discernible phenotypes, indicating that enhancers function redundantly in establishing normal morphology. In a genetic background sensitized by reduced baseline expression of the target gene, even single enhancer deletions caused limb abnormalities, suggesting that functional redundancy is conferred by additive effects of enhancers on gene expression levels. A genome-wide analysis integrating epigenomic and transcriptomic data from 29 developmental mouse tissues revealed that mammalian genes are very commonly associated with multiple enhancers that have similar spatiotemporal activity. Systematic exploration of three representative developmental structures (limb, brain, heart) uncovered more than a thousand cases in which five or more enhancers with redundant activity patterns were found near the same gene. Taken together, our data indicate that enhancer redundancy is a remarkably widespread feature of mammalian genomes and provides an effective regulatory buffer preventing deleterious phenotypic consequences upon loss of individual enhancers.
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27
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Wang JS, Infante CR, Park S, Menke DB. PITX1 promotes chondrogenesis and myogenesis in mouse hindlimbs through conserved regulatory targets. Dev Biol 2017; 434:186-195. [PMID: 29273440 DOI: 10.1016/j.ydbio.2017.12.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 12/05/2017] [Accepted: 12/18/2017] [Indexed: 10/18/2022]
Abstract
The PITX1 transcription factor is expressed during hindlimb development, where it plays a critical role in directing hindlimb growth and the specification of hindlimb morphology. While it is known that PITX1 regulates hindlimb formation, in part, through activation of the Tbx4 gene, other transcriptional targets remain to be elucidated. We have used a combination of ChIP-seq and RNA-seq to investigate enhancer regions and target genes that are directly regulated by PITX1 in embryonic mouse hindlimbs. In addition, we have analyzed PITX1 binding sites in hindlimbs of Anolis lizards to identify ancient PITX1 regulatory targets. We find that PITX1-bound regions in both mouse and Anolis hindlimbs are strongly associated with genes implicated in limb and skeletal system development. Gene expression analyses reveal a large number of misexpressed genes in the hindlimbs of Pitx1-/- mouse embryos. By intersecting misexpressed genes with genes that have neighboring mouse PITX1 binding sites, we identified 440 candidate targets of PITX1. Of these candidates, 68 exhibit ultra-conserved PITX1 binding events that are shared between mouse and Anolis hindlimbs. Among the ancient targets of PITX1 are important regulators of cartilage and skeletal muscle development, including Sox9 and Six1. Our data suggest that PITX1 promotes chondrogenesis and myogenesis in the hindlimb by direct regulation of several key members of the cartilage and muscle transcriptional networks.
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Affiliation(s)
- Jialiang S Wang
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
| | - Carlos R Infante
- Department of Genetics, University of Georgia, Athens, GA 30602, USA; Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ 85721, USA
| | - Sungdae Park
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
| | - Douglas B Menke
- Department of Genetics, University of Georgia, Athens, GA 30602, USA.
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28
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Vanlerberghe C, Jourdain AS, Dieux A, Toutain A, Callewaert B, Dupuis-Girod S, Unger S, Wright M, Isidor B, Ghoumid J, Petit F, Boutry N, Escande F, Manouvrier-Hanu S. Small patella syndrome: New clinical and molecular insights into a consistent phenotype. Clin Genet 2017; 92:676-678. [DOI: 10.1111/cge.13103] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 07/06/2017] [Accepted: 07/09/2017] [Indexed: 11/28/2022]
Affiliation(s)
- C. Vanlerberghe
- Department of Clinical Genetics; CHU Lille; France
- Université Lille; EA7364 RADEME; Lille France
| | - A.-S. Jourdain
- Université Lille; EA7364 RADEME; Lille France
- Department of Molecular genetics; CHU Lille; France
| | - A. Dieux
- Department of Clinical Genetics; CHU Lille; France
| | - A. Toutain
- Department of Genetics; CHU Tours France
| | | | - S. Dupuis-Girod
- Department of Clinical Genetics; Groupement Hospitalier Est; Bron France
| | - S. Unger
- Department of Genetic Medicine; CHU Vaudois; Lausanne Switzerland
| | - M. Wright
- Institute of Genetic Medicine; International Centre for Life; Newcastle UK
| | - B. Isidor
- Department of Clinical Genetics, Hôpital Mère et Enfant; CHU Nantes; France
| | - J. Ghoumid
- Department of Clinical Genetics; CHU Lille; France
- Université Lille; EA7364 RADEME; Lille France
| | - F. Petit
- Department of Clinical Genetics; CHU Lille; France
- Université Lille; EA7364 RADEME; Lille France
| | - N. Boutry
- Université Lille; EA7364 RADEME; Lille France
- Department of Pediatric Radiology; CHU Lille; France
| | - F. Escande
- Université Lille; EA7364 RADEME; Lille France
- Department of Molecular genetics; CHU Lille; France
| | - S. Manouvrier-Hanu
- Department of Clinical Genetics; CHU Lille; France
- Université Lille; EA7364 RADEME; Lille France
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29
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Infante CR, Rasys AM, Menke DB. Appendages and gene regulatory networks: Lessons from the limbless. Genesis 2017; 56. [PMID: 29076617 DOI: 10.1002/dvg.23078] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/06/2017] [Accepted: 10/06/2017] [Indexed: 01/19/2023]
Abstract
Among squamate reptiles, dozens of lineages have independently evolved complete or partial limb reduction. This remarkable convergence of limbless and limb-reduced phenotypes provides multiple natural replicates of different ages to explore the evolution and development of the vertebrate limb and the gene regulatory network that controls its formation. The most successful and best known of the limb-reduced squamates are snakes, which evolved a limb-reduced body form more than 100 million years ago. Recent studies have revealed the unexpected finding that many ancient limb enhancers are conserved in the genomes of snakes. Analyses in limbed animals show that many of these limb enhancers are also active during development of the phallus, suggesting that these enhancers may have been retained in snakes due their importance in regulating transcription in the external genitalia. This hypothesis is substantiated by functional tests of snake enhancers, which demonstrate that snake enhancer elements have lost limb function while retaining genital enhancer function. The large degree of overlap in the gene regulatory networks deployed during limb and phallus development may act to constrain the divergence of shared gene network components and the evolution of appendage morphology. Future studies will reveal whether limb regulatory elements have undergone similar functional changes in other lineages of limb-reduced squamates.
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Affiliation(s)
- Carlos R Infante
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona, 85721
| | - Ashley M Rasys
- Department of Cellular Biology, University of Georgia, Athens, Georgia, 30602.,Department of Genetics, University of Georgia, Athens, Georgia, 30602
| | - Douglas B Menke
- Department of Genetics, University of Georgia, Athens, Georgia, 30602
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30
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Horie M, Miyashita N, Mikami Y, Noguchi S, Yamauchi Y, Suzukawa M, Fukami T, Ohta K, Asano Y, Sato S, Yamaguchi Y, Ohshima M, Suzuki HI, Saito A, Nagase T. TBX4 is involved in the super-enhancer-driven transcriptional programs underlying features specific to lung fibroblasts. Am J Physiol Lung Cell Mol Physiol 2017; 314:L177-L191. [PMID: 28971975 DOI: 10.1152/ajplung.00193.2017] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Lung fibroblasts participate in the pathogenesis of respiratory diseases, including lung cancer and pulmonary fibrosis. Although fibroblasts are ubiquitous constituents of various organs, their cellular diversity among different organs has been poorly characterized. Here, we aimed to investigate the distinct gene signature of lung fibroblasts that represents its pulmonary origin and the underlying gene regulatory networks. Promoter-level differential expression analysis by cap analysis of gene expression (CAGE) sequencing revealed distinct gene expression patterns of fibroblasts derived from different anatomical sites and identified 88 coding genes with higher expression in lung fibroblasts relative to other fibroblasts. Multiple key transcription factors important for lung mesenchyme development, including the T-box transcription factors TBX2, TBX4, and TBX5 were enriched in this lung-specific signature and were associated with super-enhancers. TBX4 showed highly specific expression in lung fibroblasts and was required for cell proliferation and collagen gel contraction capacity. Transcriptome analysis revealed that TBX4 could broadly regulate fibroblast-related pathways and partly contribute to super-enhancer-mediated transcriptional programs. Of pathological importance, lung fibroblast-specific genes were globally downregulated in lung cancer-associated fibroblasts (CAFs). Notably, TBX2, TBX4, and TBX5 were downregulated and hypermethylated in lung CAFs, suggesting an association between epigenetic silencing of these factors and phenotypic alteration of lung fibroblasts in cancer. Our study highlights the importance of T-box transcription factors, especially TBX4, and super-enhancers in the roles of lung fibroblasts in pulmonary physiology and pathogenesis.
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Affiliation(s)
- Masafumi Horie
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan.,Division for Health Service Promotion, The University of Tokyo , Tokyo , Japan.,Division of Genomic Technologies, RIKEN Center for Life Science Technologies , Kanagawa , Japan
| | - Naoya Miyashita
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
| | - Yu Mikami
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan.,Department of Clinical Laboratory, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
| | - Satoshi Noguchi
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
| | - Yasuhiro Yamauchi
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
| | - Maho Suzukawa
- National Hospital Organization Tokyo National Hospital , Tokyo , Japan
| | - Takeshi Fukami
- National Hospital Organization Tokyo National Hospital , Tokyo , Japan
| | - Ken Ohta
- National Hospital Organization Tokyo National Hospital , Tokyo , Japan
| | - Yoshihide Asano
- Department of Dermatology, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
| | - Shinichi Sato
- Department of Dermatology, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
| | - Yoko Yamaguchi
- Department of Biochemistry, Nihon University School of Dentistry , Tokyo , Japan.,Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry , Tokyo , Japan
| | - Mitsuhiro Ohshima
- Department of Biochemistry, Ohu University School of Pharmaceutical Sciences , Fukushima , Japan
| | - Hiroshi I Suzuki
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology , Cambridge, Massachusetts
| | - Akira Saito
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan.,Division for Health Service Promotion, The University of Tokyo , Tokyo , Japan
| | - Takahide Nagase
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
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31
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Basit S, Khoshhal KI. Genetics of clubfoot; recent progress and future perspectives. Eur J Med Genet 2017; 61:107-113. [PMID: 28919208 DOI: 10.1016/j.ejmg.2017.09.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 09/05/2017] [Accepted: 09/10/2017] [Indexed: 12/20/2022]
Abstract
Clubfoot or talipes equinovarus (TEV) is an inborn three-dimensional deformity of leg, ankle and foot. It results from structural defects of several tissues of foot and lower leg leading to abnormal positioning of foot and ankle joints. TEV can lead to long-lasting functional disability, malformation and discomfort if left untreated. Substantial progress has been achieved in the management and diagnosis of limb defects; however, not much is known about the molecular players and signalling pathways underlying TEV disorder. The homeostasis and development of the limb depends on the complex interactions between the lateral plate mesoderm cells and outer ectoderm. These complex interactions include HOX signalling and PITX1-TBX4 pathways. The susceptibility to develop TEV is determined by a number of environmental and genetic factors, although the nature and level of interplay between them remains unclear. Familial occurrence and inter and intra phenotypic variability of TEV is well documented. Variants in genes that code for contractile proteins of skeletal myofibers might play a role in the aetiology of TEV but, to date, no strong candidate genes conferring increased risk have emerged, although variants in TBX4, PITX1, HOXA, HOXC and HOXD clusters genes, NAT2 and others have been shown to be associated with TEV. The mechanisms by which variants in these genes confer risk and the nature of the physical and genetic interaction between them remains to be determined. Elucidation of genetic players and cellular pathways underlying TEV will certainly increase our understanding of the pathophysiology of this deformity.
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Affiliation(s)
- Sulman Basit
- Centre for Genetics and Inherited Diseases, Taibah University Almadinah Almunawwarah, Saudi Arabia.
| | - Khalid I Khoshhal
- College of Medicine, Taibah University Almadinah Almunawwarah, Saudi Arabia
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32
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Spielmann M, Hernandez-Miranda LR, Ceccherini I, Weese-Mayer DE, Kragesteen BK, Harabula I, Krawitz P, Birchmeier C, Leonard N, Mundlos S. Mutations inMYO1Hcause a recessive form of central hypoventilation with autonomic dysfunction. J Med Genet 2017; 54:754-761. [DOI: 10.1136/jmedgenet-2017-104765] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/14/2017] [Accepted: 06/16/2017] [Indexed: 11/03/2022]
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Dobbs MB, Gurnett CA. The 2017 ABJS Nicolas Andry Award: Advancing Personalized Medicine for Clubfoot Through Translational Research. Clin Orthop Relat Res 2017; 475:1716-1725. [PMID: 28236079 PMCID: PMC5406347 DOI: 10.1007/s11999-017-5290-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 02/16/2017] [Indexed: 01/31/2023]
Abstract
BACKGROUND Clubfoot is one of the most common pediatric orthopaedic disorders. While the Ponseti method has revolutionized clubfoot treatment, it is not effective for all patients. When the Ponseti method does not correct the foot, patients are at risk for lifelong disability and may require more-extensive surgery. QUESTIONS/PURPOSES (1) What genetic and morphologic abnormalities contribute to the development of clubfoot? (2) How can this information be used to devise personalized treatment paradigms for patients with clubfoot? METHODS Human gene sequencing, molecular genetic engineering of mouse models of clubfoot, MRI of clubfoot, and development of new treatment methods all have been used by our group to understand the biological basis and improve therapy for this group of disorders. RESULTS We gained new insight into clubfoot pathogenesis from our discovery that mutations in the PITX1-TBX4-HOXC transcriptional pathway cause familial clubfoot and vertical talus in a small number of families, with the unique lower limb expression of these genes providing an explanation for the lack of upper extremity involvement in these disorders. MRI studies revealed corresponding morphologic abnormalities, including hypomorphic muscle, bone, and vasculature, that are not only associated with these gene mutations, but also are biomarkers for treatment-resistant clubfoot. CONCLUSIONS Based on an understanding of the underlying biology, we improved treatment methods for neglected and syndromic clubfoot, developed new treatment for congenital vertical talus based on the principles of the Ponseti method, and designed a new dynamic clubfoot brace to improve strength and compliance.
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Affiliation(s)
- Matthew B. Dobbs
- 0000 0000 9953 7617grid.416775.6Department of Orthopaedics, St. Louis Children’s Hospital, 1 Children’s Place, Suite 4S-60, St. Louis, MO 63110 USA
| | - Christina A. Gurnett
- 0000 0001 2355 7002grid.4367.6Department of Neurology, Washington University School of Medicine in St Louis, St. Louis, MO USA
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Abstract
The limb is a commonly used model system for developmental biology. Given the need for precise control of complex signalling pathways to achieve proper patterning, the limb is also becoming a model system for gene regulation studies. Recent developments in genomic technologies have enabled the genome-wide identification of regulatory elements that control limb development, yielding insights into the determination of limb morphology and forelimb versus hindlimb identity. The modulation of regulatory interactions - for example, through the modification of regulatory sequences or chromatin architecture - can lead to morphological evolution, acquired regeneration capacity or limb malformations in diverse species, including humans.
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Affiliation(s)
- Florence Petit
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, California 94158, USA.,University of Lille, CHU Lille, EA 7364-RADEME, F-59000 Lille, France
| | - Karen E Sears
- School of Integrative Biology, Institute for Genomic Biology, University of Illinois, Urbana, Illinois 61801, USA
| | - Nadav Ahituv
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, California 94158, USA.,Institute for Human Genetics, University of California San Francisco, California 94158, USA
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Prenatal exposure to environmental factors and congenital limb defects. ACTA ACUST UNITED AC 2016; 108:243-273. [DOI: 10.1002/bdrc.21140] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 09/29/2016] [Indexed: 12/26/2022]
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Molecular developmental mechanism in polypterid fish provides insight into the origin of vertebrate lungs. Sci Rep 2016; 6:30580. [PMID: 27466206 PMCID: PMC4964569 DOI: 10.1038/srep30580] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 07/05/2016] [Indexed: 12/21/2022] Open
Abstract
The lung is an important organ for air breathing in tetrapods and originated well before the terrestrialization of vertebrates. Therefore, to better understand lung evolution, we investigated lung development in the extant basal actinopterygian fish Senegal bichir (Polypterus senegalus). First, we histologically confirmed that lung development in this species is very similar to that of tetrapods. We also found that the mesenchymal expression patterns of three genes that are known to play important roles in early lung development in tetrapods (Fgf10, Tbx4, and Tbx5) were quite similar to those of tetrapods. Moreover, we found a Tbx4 core lung mesenchyme-specific enhancer (C-LME) in the genomes of bichir and coelacanth (Latimeria chalumnae) and experimentally confirmed that these were functional in tetrapods. These findings provide the first molecular evidence that the developmental program for lung was already established in the common ancestor of actinopterygians and sarcopterygians.
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Yong BC, Xun FX, Zhao LJ, Deng HW, Xu HW. A systematic review of association studies of common variants associated with idiopathic congenital talipes equinovarus (ICTEV) in humans in the past 30 years. SPRINGERPLUS 2016; 5:896. [PMID: 27386344 PMCID: PMC4923008 DOI: 10.1186/s40064-016-2353-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 05/16/2016] [Indexed: 11/20/2022]
Abstract
The genetic cause of idiopathic congenital talipes equinovarus (ICTEV) is largely unknown. We performed a systematic review to describe the findings from 21 studies that have examined the genetic variants related to ICTEV, and to evaluate the quality of reporting. We found that ICTEV was positively associated with Hox family genes, collagen family genes, GLI3, N-acetylation genes, T-box family genes, apoptotic pathway genes, and muscle contractile family genes. Negative and controversial results were also discussed, and several genes associated with ICTEV were identified. Due to the limitation of the included studies, rare coding variants should be further investigated, sample size should be enlarged, and candidate genes should be replicated in larger ICTEV populations. Epigenetic study, pathways, chromosome capture, and detailed gene-environment interaction will also allow further elucidation of factors involved in ICTEV pathogenesis and may shed light on diagnosis and timely and accurate interventions.
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Affiliation(s)
- Bi-Cheng Yong
- Department of Pediatric Orthopedics, Guang Zhou Women and Children's Medical Center, Sun Yat-Sen University, 9th Floor, No 9., Jingsui Road, Guangzhou, China
| | - Fu-Xing Xun
- Department of Pediatric Orthopedics, Guang Zhou Women and Children's Medical Center, Sun Yat-Sen University, 9th Floor, No 9., Jingsui Road, Guangzhou, China
| | - Lan-Juan Zhao
- Department of Biostatistics and Bioinformatics, School of Public Health and Tropical Medicine, Tulane University, Orleans, LA USA
| | - Hong-Wen Deng
- Department of Biostatistics and Bioinformatics, School of Public Health and Tropical Medicine, Tulane University, Orleans, LA USA
| | - Hong-Wen Xu
- Department of Pediatric Orthopedics, Guang Zhou Women and Children's Medical Center, Sun Yat-Sen University, 9th Floor, No 9., Jingsui Road, Guangzhou, China
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Subdivision of the lateral plate mesoderm and specification of the forelimb and hindlimb forming domains. Semin Cell Dev Biol 2016; 49:102-8. [DOI: 10.1016/j.semcdb.2015.11.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/17/2015] [Accepted: 11/21/2015] [Indexed: 11/15/2022]
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39
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Infante CR, Mihala AG, Park S, Wang JS, Johnson KK, Lauderdale JD, Menke DB. Shared Enhancer Activity in the Limbs and Phallus and Functional Divergence of a Limb-Genital cis-Regulatory Element in Snakes. Dev Cell 2015; 35:107-19. [PMID: 26439399 DOI: 10.1016/j.devcel.2015.09.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 07/24/2015] [Accepted: 09/09/2015] [Indexed: 11/18/2022]
Abstract
The amniote phallus and limbs differ dramatically in their morphologies but share patterns of signaling and gene expression in early development. Thus far, the extent to which genital and limb transcriptional networks also share cis-regulatory elements has remained unexplored. We show that many limb enhancers are retained in snake genomes, suggesting that these elements may function in non-limb tissues. Consistent with this, our analysis of cis-regulatory activity in mice and Anolis lizards reveals that patterns of enhancer activity in embryonic limbs and genitalia overlap heavily. In mice, deletion of HLEB, an enhancer of Tbx4, produces defects in hindlimbs and genitalia, establishing the importance of this limb-genital enhancer for development of these different appendages. Further analyses demonstrate that the HLEB of snakes has lost hindlimb enhancer function while retaining genital activity. Our findings identify roles for Tbx4 in genital development and highlight deep similarities in cis-regulatory activity between limbs and genitalia.
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Affiliation(s)
- Carlos R Infante
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
| | | | - Sungdae Park
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
| | - Jialiang S Wang
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
| | - Kenji K Johnson
- Department of Cellular Biology, University of Georgia, Athens, GA 30602, USA
| | - James D Lauderdale
- Department of Genetics, University of Georgia, Athens, GA 30602, USA; Department of Cellular Biology, University of Georgia, Athens, GA 30602, USA
| | - Douglas B Menke
- Department of Genetics, University of Georgia, Athens, GA 30602, USA.
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40
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Wakasa H, Cádiz A, Echenique-Díaz LM, Iwasaki WM, Kamiyama N, Nishimura Y, Yokoyama H, Tamura K, Kawata M. Developmental stages for the divergence of relative limb length between a twig and a trunk-ground Anolis lizard species. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2015; 324:410-23. [PMID: 26055630 DOI: 10.1002/jez.b.22627] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 03/20/2015] [Indexed: 11/09/2022]
Abstract
The divergent evolution of niche-related traits can facilitate adaptive radiation, yet identification of the genetic or molecular mechanisms underlying such trait changes remains a major challenge in evolutionary biology. Conducting a detailed morphological comparison along growth trajectories is a powerful method for observing the formation of differences in niche-related traits. Here, we focused on hindlimb length of Anolis lizards, differences in which are related to adaptation for use of different microhabitats. We measured the length of hindlimb skeletons in different ecomorphs of anole lizards (A. sagrei, a trunk-ground ecomorph with long hindlimbs, and A. angusticeps, a twig ecomorph with short hindlimbs) from early embryonic stages to adulthood, to determine which hindlimb elements mainly differentiate the species and the timing of the formation of these differences. With respect to the digit, differences between the species mainly occurred during the embryonic stages of interdigit reduction, when the cartilage of the distal phalanges was simultaneously forming. In addition, we compared the relative length of developing autopods in early embryonic stages using whole-mount in situ hybridization before the formation of the cartilaginous bones, and the results showed that the relative growth rate of the Hoxa11-negative distal region in A. sagrei was greater than that in A. angusticeps. Our results show that there are several important developmental stages for hindlimb length differentiation between A. angusticeps and A. sagrei, depending on which hindlimb element is considered. In particular, the species differences were largely due to variations in digit length, which arose at early embryonic stages.
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Affiliation(s)
- Hajime Wakasa
- Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Antonio Cádiz
- Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan.,Faculty of Biology, Havana University, Havana, Cuba
| | | | - Watal M Iwasaki
- Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Namiko Kamiyama
- Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Yuki Nishimura
- Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Hitoshi Yokoyama
- Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Koji Tamura
- Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Masakado Kawata
- Department of Ecology and Evolutionary Biology, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
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41
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Reno PL. Genetic and developmental basis for parallel evolution and its significance for hominoid evolution. Evol Anthropol 2015; 23:188-200. [PMID: 25347977 DOI: 10.1002/evan.21417] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Greater understanding of ape comparative anatomy and evolutionary history has brought a general appreciation that the hominoid radiation is characterized by substantial homoplasy.(1-4) However, little consensus has been reached regarding which features result from repeated evolution. This has important implications for reconstructing ancestral states throughout hominoid evolution, including the nature of the Pan-Homo last common ancestor (LCA). Advances from evolutionary developmental biology (evo-devo) have expanded the diversity of model organisms available for uncovering the morphogenetic mechanisms underlying instances of repeated phenotypic change. Of particular relevance to hominoids are data from adaptive radiations of birds, fish, and even flies demonstrating that parallel phenotypic changes often use similar genetic and developmental mechanisms. The frequent reuse of a limited set of genes and pathways underlying phenotypic homoplasy suggests that the conserved nature of the genetic and developmental architecture of animals can influence evolutionary outcomes. Such biases are particularly likely to be shared by closely related taxa that reside in similar ecological niches and face common selective pressures. Consideration of these developmental and ecological factors provides a strong theoretical justification for the substantial homoplasy observed in the evolution of complex characters and the remarkable parallel similarities that can occur in closely related taxa. Thus, as in other branches of the hominoid radiation, repeated phenotypic evolution within African apes is also a distinct possibility. If so, the availability of complete genomes for each of the hominoid genera makes them another model to explore the genetic basis of repeated evolution.
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Affiliation(s)
- Philip L Reno
- Department of Anthropology, The Pennsylvania State University, University Park, PA, 16802
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42
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Kumar ME, Bogard PE, Espinoza FH, Menke DB, Kingsley DM, Krasnow MA. Mesenchymal cells. Defining a mesenchymal progenitor niche at single-cell resolution. Science 2014; 346:1258810. [PMID: 25395543 DOI: 10.1126/science.1258810] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Most vertebrate organs are composed of epithelium surrounded by support and stromal tissues formed from mesenchyme cells, which are not generally thought to form organized progenitor pools. Here, we use clonal cell labeling with multicolor reporters to characterize individual mesenchymal progenitors in the developing mouse lung. We observe a diversity of mesenchymal progenitor populations with different locations, movements, and lineage boundaries. Airway smooth muscle (ASM) progenitors map exclusively to mesenchyme ahead of budding airways. Progenitors recruited from these tip pools differentiate into ASM around airway stalks; flanking stalk mesenchyme can be induced to form an ASM niche by a lateral bud or by an airway tip plus focal Wnt signal. Thus, mesenchymal progenitors can be organized into localized and carefully controlled domains that rival epithelial progenitor niches in regulatory sophistication.
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Affiliation(s)
- Maya E Kumar
- Howard Hughes Medical Institute and Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305-5307, USA
| | - Patrick E Bogard
- Howard Hughes Medical Institute and Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305-5307, USA
| | - F Hernán Espinoza
- Howard Hughes Medical Institute and Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305-5307, USA
| | - Douglas B Menke
- Department of Genetics, University of Georgia, Athens, GA 30602-2607, USA. Howard Hughes Medical Institute and Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305-5329, USA
| | - David M Kingsley
- Howard Hughes Medical Institute and Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305-5329, USA
| | - Mark A Krasnow
- Howard Hughes Medical Institute and Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305-5307, USA.
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43
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Leal F, Cohn MJ. Development of Hemipenes in the Ball Python Snake Python regius. Sex Dev 2014; 9:6-20. [DOI: 10.1159/000363758] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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44
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45
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Nolte MJ, Wang Y, Deng JM, Swinton PG, Wei C, Guindani M, Schwartz RJ, Behringer RR. Functional analysis of limb transcriptional enhancers in the mouse. Evol Dev 2014; 16:207-23. [PMID: 24920384 DOI: 10.1111/ede.12084] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Transcriptional enhancers are genomic sequences bound by transcription factors that act together with basal transcriptional machinery to regulate gene transcription. Several high-throughput methods have generated large datasets of tissue-specific enhancer sequences with putative roles in developmental processes. However, few enhancers have been deleted from the genome to determine their roles in development. To understand the roles of two enhancers active in the mouse embryonic limb bud we deleted them from the genome. Although the genes regulated by these enhancers are unknown, they were selected because they were identified in a screen for putative limb bud-specific enhancers associated with p300, an acetyltransferase that participates in protein complexes that promote active transcription, and because the orthologous human enhancers (H1442 and H280) drive distinct lacZ expression patterns in limb buds of embryonic day (E) 11.5 transgenic mice. We show that the orthologous mouse sequences, M1442 and M280, regulate dynamic expression in the developing limb. Although significant transcriptional differences in enhancer-proximal genes in embryonic limb buds accompany the deletion of M1442 and M280 no gross limb malformations during embryonic development were observed, demonstrating that M1442 and M280 are not required for mouse limb development. However, M280 is required for the development and/or maintenance of body size; M280 mice are significantly smaller than controls. M280 also harbors an "ultraconserved" sequence that is identical between human, rat, and mouse. This is the first report of a phenotype resulting from the deletion of an ultraconserved element. These studies highlight the importance of determining enhancer regulatory function by experiments that manipulate them in situ and suggest that some of an enhancer's regulatory capacities may be developmentally tolerated rather than developmentally required.
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Affiliation(s)
- Mark J Nolte
- Graduate Program in Genes and Development, University of Texas Graduate School of Biomedical Sciences at Houston, Houston, TX, USA; Department of Genetics, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
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46
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Zhang TX, Haller G, Lin P, Alvarado DM, Hecht JT, Blanton SH, Stephens Richards B, Rice JP, Dobbs MB, Gurnett CA. Genome-wide association study identifies new disease loci for isolated clubfoot. J Med Genet 2014; 51:334-9. [DOI: 10.1136/jmedgenet-2014-102303] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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47
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48
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Glaser A, Arora R, Hoffmann S, Li L, Gretz N, Papaioannou VE, Rappold GA. Tbx4 interacts with the short stature homeobox gene Shox2 in limb development. Dev Dyn 2014; 243:629-39. [PMID: 24347445 DOI: 10.1002/dvdy.24104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 11/29/2013] [Accepted: 11/29/2013] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The short stature homeodomain transcription factors SHOX and SHOX2 play key roles in limb formation. To gain more insight into genes regulated by Shox2 during limb development, we analyzed expression profiles of WT and Shox2-/- mouse embryonic limbs and identified the T-Box transcription factor Tbx4 as a potential downstream target. Tbx4 is known to exert essential functions in skeletal and muscular hindlimb development. In humans, haploinsufficiency of TBX4 causes small patella syndrome, a skeletal dysplasia characterized by anomalies of the knee, pelvis, and foot. RESULTS Here, we demonstrate an inhibitory regulatory effect of Shox2 on Tbx4 specifically in the forelimbs. We also show that Tbx4 activates Shox2 expression in fore- and hindlimbs, suggesting Shox2 as a feedback modulator of Tbx4. Using EMSA studies, we find that Tbx4/TBX4 is able to bind to distinct T-box binding sites within the mouse and human Shox2/SHOX2 promoter. CONCLUSIONS Our data identifies Tbx4 as a novel transcriptional activator of Shox2 during murine fore- and hindlimb development. Tbx4 is also regulated by Shox2 specifically in the forelimb bud possibly via a feedback mechanism. These data extend our understanding of the role and regulation of Tbx4 and Shox2 in limb development and limb associated diseases.
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Affiliation(s)
- Anne Glaser
- Department of Human Molecular Genetics, University of Heidelberg, Heidelberg, Germany
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49
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Turcatel G, Rubin N, Menke DB, Martin G, Shi W, Warburton D. Lung mesenchymal expression of Sox9 plays a critical role in tracheal development. BMC Biol 2013; 11:117. [PMID: 24274029 PMCID: PMC4222279 DOI: 10.1186/1741-7007-11-117] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 11/22/2013] [Indexed: 12/01/2022] Open
Abstract
Background Embryonic lung development is instructed by crosstalk between mesenchyme and epithelia, which results in activation of transcriptional factors, such as Sox9, in a temporospatial manner. Sox9 is expressed in both distal lung epithelium and proximal lung mesenchyme. Here, we investigated the effect of lung mesenchyme-specific inducible deletion of Sox9 during murine lung development. Results Transgenic mice lacking Sox9 expression were unable to breathe and died at birth, with noticeable tracheal defects. Cartilage rings were missing, and the tracheal lumen was collapsed in the mutant trachea. In situ hybridization showed an altered expression pattern of Tbx4, Tbx5 and Fgf10 genes and marked reduction of Collagen2 expression in the tracheal mesenchyme. The tracheal phenotype was increasingly severe, with longer duration of deletion. Lymphatic vasculature was underdeveloped in the mutant trachea: Prox1, Lyve1, and Vegfr3 were decreased after Sox9 knockout. We also found that compared with normal tracheal epithelium, the mutant tracheal epithelium had an altered morphology with fewer P63-positive cells and more CC10-positive cells, fewer goblet cells, and downregulation of surfactant proteins A and C. Conclusion The appropriate temporospatial expression of Sox9 in lung mesenchyme is necessary for appropriate tracheal cartilage formation, lymphatic vasculature system development, and epithelial differentiation. We uncovered a novel mechanism of lung epithelium differentiation: tracheal cartilage rings instruct the tracheal epithelium to differentiate properly during embryonic development. Thus, besides having a mechanical function, tracheal cartilage also appears to be a local signaling structure in the embryonic lung.
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Affiliation(s)
| | | | | | | | | | - David Warburton
- Developmental Biology and Regenerative Medicine Program, Saban Research Institute, Children's Hospital Los Angeles, Keck School of Medicine and Ostrow School of Dentistry, University of Southern California, 4661 Sunset Boulevard, Los Angeles, CA 90027, USA.
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50
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Peterson JF, Ghaloul-Gonzalez L, Madan-Khetarpal S, Hartman J, Surti U, Rajkovic A, Yatsenko SA. Familial microduplication of 17q23.1-q23.2 involving TBX4 is associated with congenital clubfoot and reduced penetrance in females. Am J Med Genet A 2013; 164A:364-9. [DOI: 10.1002/ajmg.a.36238] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jess F. Peterson
- Pittsburgh Cytogenetics Laboratory; Center for Medical Genetics and Genomics, Magee-Womens Hospital of UPMC; Pittsburgh Pennsylvania
- Department of Human Genetics; Graduate School of Public Health, University of Pittsburgh; Pittsburgh Pennsylvania
| | - Lina Ghaloul-Gonzalez
- Department of Medical Genetics; Children's Hospital of Pittsburgh of UPMC; Pittsburgh Pennsylvania
| | - Suneeta Madan-Khetarpal
- Department of Medical Genetics; Children's Hospital of Pittsburgh of UPMC; Pittsburgh Pennsylvania
| | - Jessica Hartman
- Department of Medical Genetics; Children's Hospital of Pittsburgh of UPMC; Pittsburgh Pennsylvania
| | - Urvashi Surti
- Pittsburgh Cytogenetics Laboratory; Center for Medical Genetics and Genomics, Magee-Womens Hospital of UPMC; Pittsburgh Pennsylvania
- Department of Human Genetics; Graduate School of Public Health, University of Pittsburgh; Pittsburgh Pennsylvania
- Department of Obstetrics, Gynecology and Reproductive Sciences; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
- Department of Pathology; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
| | - Aleksandar Rajkovic
- Pittsburgh Cytogenetics Laboratory; Center for Medical Genetics and Genomics, Magee-Womens Hospital of UPMC; Pittsburgh Pennsylvania
- Department of Human Genetics; Graduate School of Public Health, University of Pittsburgh; Pittsburgh Pennsylvania
- Department of Obstetrics, Gynecology and Reproductive Sciences; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
- Department of Pathology; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
| | - Svetlana A. Yatsenko
- Pittsburgh Cytogenetics Laboratory; Center for Medical Genetics and Genomics, Magee-Womens Hospital of UPMC; Pittsburgh Pennsylvania
- Department of Obstetrics, Gynecology and Reproductive Sciences; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
- Department of Pathology; University of Pittsburgh School of Medicine; Pittsburgh Pennsylvania
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