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Hou D, Qin P, Niu X, Li T, Chen B, Wei C, Jing Z, Han R, Li H, Liu X, Tian Y, Li D, Li Z, Cai H, Kang X. Genome-wide identification evolution and expression of vestigial-like gene family in chicken. Anim Biotechnol 2022; 33:1602-1612. [PMID: 34032551 DOI: 10.1080/10495398.2021.1920425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Vestigial-like (Vgll) genes are widespread in vertebrates and play an important role in muscle development. In this study, we used bioinformatics methods to systematically identify the chicken VGLL family in the whole genome and investigated its evolutionary history and gene structure features. Tissue expression spectra combined with real-time PCR data were used to analyze the organizational expression pattern of the genes. Based on the maximum likelihood method, a phylogenetic tree of the VGLL family was constructed, and 94 VGLL genes were identified in 24 breeds, among which four VGLL family genes were identified in the chicken genome. Ten motifs were detected in the VGLL genes, and the analysis of introns combined with gene structure revealed that the family was conserved during evolution. Tissue expression analysis suggested that the expression profiles of the VGLL family genes in 16 tissues differed between LU Shi and AA broilers. In addition, a single gene (VGLL2) showed increased expression in chickens at embryonic days 10-16 and was involved in the growth and development of skeletal muscle in chickens in the embryonic stage. In summary, VGLL genes are involved in chicken muscle growth and development, which provides useful information for subsequent functional studies of VGLL genes.
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Affiliation(s)
- Dan Hou
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Panpan Qin
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Xinran Niu
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Tong Li
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Bingjie Chen
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Chengjie Wei
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Zhenzhu Jing
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Ruili Han
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Hong Li
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Xiaojun Liu
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Yadong Tian
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Donghua Li
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Zhuanjian Li
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Hanfang Cai
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Xiangtao Kang
- Henan Innovative Engineering Research Center of Poultry Germplasm Resource, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
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2
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Senthil Kumar S, Swaminathan A, Abdel-Daim MM, Sheik Mohideen S. A systematic review on the effects of acrylamide and bisphenol A on the development of Drosophila melanogaster. Mol Biol Rep 2022; 49:10703-10713. [PMID: 35753027 DOI: 10.1007/s11033-022-07642-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 03/14/2022] [Accepted: 05/25/2022] [Indexed: 11/28/2022]
Abstract
The current global scenario has instigated a steady upsurge of synthetic chemicals usage thereby creating a toxic environment unsuitable for animals and humans. Acrylamide and bisphenol A are some of the most common toxins found in the atmosphere due to their extensive involvement in numerous industrial processes. Acrylamide, an occupational hazard toxin has been known to cause severe nerve damage and peripheral neuronal damage in both animals and humans. General sources of acrylamide exposure are effluents from textile and paper industries, cosmetics, and thermally processed foods rich in starch. Bisphenol A (BPA) is generally found in food packaging materials, dental sealants, and plastic bottles. It is highly temperature-sensitive that can easily leach into the food products or humans on contact. The genotoxic and neurotoxic effects of acrylamide and bisphenol A have been widely researched; however, more attention should be dedicated to understanding the developmental toxicity of these chemicals. The developmental impacts of toxin exposure can be easily understood using Drosophila melanogaster as a model given considering its short life span and genetic homology to humans. In this review, we have discussed the toxic effects of acrylamide and BPA on the developmental process of Drosophila melanogaster.
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Affiliation(s)
- Swetha Senthil Kumar
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Chengalpattu, Tamil Nadu, India
| | - Abhinaya Swaminathan
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Chengalpattu, Tamil Nadu, India
| | - Mohamed M Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, 41522, Ismailia, Egypt
| | - Sahabudeen Sheik Mohideen
- Developmental Biology Lab, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur - 603203, Chengalpattu District, Chengalpattu, Tamil Nadu, India.
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3
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Khalili D, Kalcher C, Baumgartner S, Theopold U. Anti-Fibrotic Activity of an Antimicrobial Peptide in a Drosophila Model. J Innate Immun 2021; 13:376-390. [PMID: 34000729 PMCID: PMC8613551 DOI: 10.1159/000516104] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/22/2021] [Indexed: 11/19/2022] Open
Abstract
Fibrotic lesions accompany several pathological conditions, including tumors. We show that expression of a dominant-active form of the Ras oncogene in Drosophila salivary glands (SGs) leads to redistribution of components of the basement membrane (BM) and fibrotic lesions. Similar to several types of mammalian fibrosis, the disturbed BM attracts clot components, including insect transglutaminase and phenoloxidase. SG epithelial cells show reduced apicobasal polarity accompanied by a loss of secretory activity. Both the fibrotic lesions and the reduced cell polarity are alleviated by ectopic expression of the antimicrobial peptide drosomycin (Drs), which also restores the secretory activity of the SGs. In addition to extracellular matrix components, both Drs and F-actin localize to fibrotic lesions.
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Affiliation(s)
- Dilan Khalili
- Department of Molecular Biosciences, The Wenner-Gren Institute (MBW), Stockholm University, Stockholm, Sweden
| | - Christina Kalcher
- Department of Molecular Biosciences, The Wenner-Gren Institute (MBW), Stockholm University, Stockholm, Sweden
| | - Stefan Baumgartner
- Department of Experimental Medical Sciences, Lund University, Lund, Sweden
| | - Ulrich Theopold
- Department of Molecular Biosciences, The Wenner-Gren Institute (MBW), Stockholm University, Stockholm, Sweden
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4
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Begum M, Paul P, Das D, Chakraborty K, Bhattacharjee A, Ghosh S. Genes regulating development and behavior exhibited altered expression in Drosophila melanogaster exposed to bisphenol A: use of real-time quantitative PCR (qRT-PCR) and droplet digital PCR (ddPCR) in genotoxicity study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:7090-7104. [PMID: 33025430 DOI: 10.1007/s11356-020-10805-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 09/09/2020] [Indexed: 06/11/2023]
Abstract
Toxicity of bisphenol A on morphological and life-history traits of model insect Drosophila melanogaster was reported in our previous work. In the present study, we have analyzed the adversity of bisphenol A on the reproductive behavior of adult and on the expression of selected genes in the larva and adult stage of fruit fly exposed to bisphenol A (0.007 g/2 ml. or 3.5 mg/ml), in addition to determination of LC50 value of bisphenol A in larva and pupal stage. We employed both the quantitative reverse transcriptase PCR and droplet digital PCR for analyzing the expression profile of seven genes namely, decapentaplegic, vestigial, wingless, foraging, insulin-like receptor, doublesex, and fruitless. We found bisphenol A has more adverse effects on male sexual behavior than females. Moreover, we observed significant downregulation of all the selected genes in treated larvae except, fruitless in male where it showed significant upregulation. On contrary among the treated adult flies, significant downregulation of all target genes in both sexes is evident, except, doublesex and fruitless in males which showed significant upregulation. We did not observe any deviation of male: female sex ratio from 1:1 under bisphenol A exposure. All these results suggest bisphenol A adversely affects the optimum functioning of genes which are involved in the regulation of metabolic pathways, behavioral pattern, stress response, endocrine homeostasis, neural functioning, and the development of the specific organ in Drosophila melanogaster. Our result not only provides a foundation to study further the bisphenol A toxicity on different pivotal genes in Drosophila but also suggests the use of the droplet digital PCR technology in toxicity measurement at the molecular level in eukaryotic model systems.
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Affiliation(s)
- Morium Begum
- Department of Zoology, Cytogenetics & Genomics Research Unit, University of Calcutta, Taraknath-Palit-Siksha-Prangan (Ballygunge Science College Campus), 35, Ballygunge Circular Road.Kolkata, West Bengal, 700019, India
| | - Pallab Paul
- Department of Zoology, Cytogenetics & Genomics Research Unit, University of Calcutta, Taraknath-Palit-Siksha-Prangan (Ballygunge Science College Campus), 35, Ballygunge Circular Road.Kolkata, West Bengal, 700019, India
| | - Debasmita Das
- Department of Zoology, Cytogenetics & Genomics Research Unit, University of Calcutta, Taraknath-Palit-Siksha-Prangan (Ballygunge Science College Campus), 35, Ballygunge Circular Road.Kolkata, West Bengal, 700019, India
| | - Kaustav Chakraborty
- Amity Institute of Biotechnology, Amity-University Kolkata, Plot no 36, 37, and 38, Major Arterial Road (South-East), Action Area II, Newtown, Kolkata, West Bengal, 700135, India
| | - Ashima Bhattacharjee
- Amity Institute of Biotechnology, Amity-University Kolkata, Plot no 36, 37, and 38, Major Arterial Road (South-East), Action Area II, Newtown, Kolkata, West Bengal, 700135, India
| | - Sujay Ghosh
- Department of Zoology, Cytogenetics & Genomics Research Unit, University of Calcutta, Taraknath-Palit-Siksha-Prangan (Ballygunge Science College Campus), 35, Ballygunge Circular Road.Kolkata, West Bengal, 700019, India.
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5
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Clark-Hachtel C, Fernandez-Nicolas A, Belles X, Tomoyasu Y. Tergal and pleural wing-related tissues in the German cockroach and their implication to the evolutionary origin of insect wings. Evol Dev 2021; 23:100-116. [PMID: 33503322 DOI: 10.1111/ede.12372] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/24/2020] [Accepted: 01/03/2021] [Indexed: 01/03/2023]
Abstract
The acquisition of wings has facilitated the massive evolutionary success of pterygotes (winged insects), which now make up nearly three-quarters of described metazoans. However, our understanding of how this crucial structure has evolved remains quite elusive. Historically, two ideas have dominated in the wing origin debate, one placing the origin in the dorsal body wall (tergum) and the other in the lateral pleural plates and the branching structures associated with these plates. Through studying wing-related tissues in the wingless segments (such as wing serial homologs) of the beetle, Tribolium castaneum, we obtained several crucial pieces of evidence that support a third idea, the dual origin hypothesis, which proposes that wings evolved from a combination of tergal and pleural tissues. Here, we extended our analysis outside of the beetle lineage and sought to identify wing-related tissues from the wingless segments of the cockroach, Blattella germanica. Through detailed functional and expression analyses for a critical wing gene, vestigial (vg), along with re-evaluating the homeotic transformation of a wingless segment induced by an improved RNA interference protocol, we demonstrate that B. germanica possesses two distinct tissues in their wingless segments, one with tergal and one with pleural nature, that might be evolutionarily related to wings. This outcome appears to parallel the reports from other insects, which may further support a dual origin of insect wings. However, we also identified a vg-independent tissue that contributes to wing formation upon homeotic transformation, as well as vg-dependent tissues that do not appear to participate in wing formation, in B. germanica, indicating a more complex evolutionary history of the tissues that contributed to the emergence of insect wings.
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Affiliation(s)
| | | | - Xavier Belles
- Institute of Evolutionary Biology, CSIC-Universitat Pompeu Fabra, Barcelona, Spain
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6
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Carayon A, Bataillé L, Lebreton G, Dubois L, Pelletier A, Carrier Y, Wystrach A, Vincent A, Frendo JL. Intrinsic control of muscle attachment sites matching. eLife 2020; 9:57547. [PMID: 32706334 PMCID: PMC7431191 DOI: 10.7554/elife.57547] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 07/23/2020] [Indexed: 11/13/2022] Open
Abstract
Myogenesis is an evolutionarily conserved process. Little known, however, is how the morphology of each muscle is determined, such that movements relying upon contraction of many muscles are both precise and coordinated. Each Drosophila larval muscle is a single multinucleated fibre whose morphology reflects expression of distinctive identity Transcription Factors (iTFs). By deleting transcription cis-regulatory modules of one iTF, Collier, we generated viable muscle identity mutants, allowing live imaging and locomotion assays. We show that both selection of muscle attachment sites and muscle/muscle matching is intrinsic to muscle identity and requires transcriptional reprogramming of syncytial nuclei. Live-imaging shows that the staggered muscle pattern involves attraction to tendon cells and heterotypic muscle-muscle adhesion. Unbalance leads to formation of branched muscles, and this correlates with locomotor behavior deficit. Thus, engineering Drosophila muscle identity mutants allows to investigate, in vivo, physiological and mechanical properties of abnormal muscles.
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Affiliation(s)
- Alexandre Carayon
- Centre de Biologie du Développement (CBD), Toulouse, France.,Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Laetitia Bataillé
- Centre de Biologie du Développement (CBD), Toulouse, France.,Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Gaëlle Lebreton
- Centre de Biologie du Développement (CBD), Toulouse, France.,Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Laurence Dubois
- Centre de Biologie du Développement (CBD), Toulouse, France.,Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Aurore Pelletier
- Centre de Biologie du Développement (CBD), Toulouse, France.,Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Yannick Carrier
- Centre de Biologie du Développement (CBD), Toulouse, France.,Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Antoine Wystrach
- Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Alain Vincent
- Centre de Biologie du Développement (CBD), Toulouse, France.,Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Jean-Louis Frendo
- Centre de Biologie du Développement (CBD), Toulouse, France.,Centre de Recherche sur la Cognition Animale (CRCA), Toulouse, France.,Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
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7
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Poovathumkadavil P, Jagla K. Genetic Control of Muscle Diversification and Homeostasis: Insights from Drosophila. Cells 2020; 9:cells9061543. [PMID: 32630420 PMCID: PMC7349286 DOI: 10.3390/cells9061543] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 12/13/2022] Open
Abstract
In the fruit fly, Drosophila melanogaster, the larval somatic muscles or the adult thoracic flight and leg muscles are the major voluntary locomotory organs. They share several developmental and structural similarities with vertebrate skeletal muscles. To ensure appropriate activity levels for their functions such as hatching in the embryo, crawling in the larva, and jumping and flying in adult flies all muscle components need to be maintained in a functionally stable or homeostatic state despite constant strain. This requires that the muscles develop in a coordinated manner with appropriate connections to other cell types they communicate with. Various signaling pathways as well as extrinsic and intrinsic factors are known to play a role during Drosophila muscle development, diversification, and homeostasis. In this review, we discuss genetic control mechanisms of muscle contraction, development, and homeostasis with particular emphasis on the contractile unit of the muscle, the sarcomere.
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8
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Zhang CU, Cadigan KM. The matrix protein Tiggrin regulates plasmatocyte maturation in Drosophila larva. Development 2017; 144:2415-2427. [PMID: 28526755 DOI: 10.1242/dev.149641] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 05/11/2017] [Indexed: 01/24/2023]
Abstract
The lymph gland (LG) is a major source of hematopoiesis during Drosophila development. In this tissue, prohemocytes differentiate into multiple lineages, including macrophage-like plasmatocytes, which comprise the vast majority of mature hemocytes. Previous studies have uncovered genetic pathways that regulate prohemocyte maintenance and some cell fate choices between hemocyte lineages. However, less is known about how the plasmatocyte pool of the LG is established and matures. Here, we report that Tiggrin, a matrix protein expressed in the LG, is a specific regulator of plasmatocyte maturation. Tiggrin mutants exhibit precocious maturation of plasmatocytes, whereas Tiggrin overexpression blocks this process, resulting in a buildup of intermediate progenitors (IPs) expressing prohemocyte and hemocyte markers. These IPs likely represent a transitory state in prohemocyte to plasmatocyte differentiation. We also found that overexpression of Wee1 kinase, which slows G2/M progression, results in a phenotype similar to Tiggrin overexpression, whereas String/Cdc25 expression phenocopies Tiggrin mutants. Further analysis revealed that Wee1 inhibits plasmatocyte maturation through upregulation of Tiggrin transcription. Our results elucidate connections between the extracellular matrix and cell cycle regulators in the regulation of hematopoiesis.
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Affiliation(s)
- Chen U Zhang
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ken M Cadigan
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
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9
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Pimmett VL, Deng H, Haskins JA, Mercier RJ, LaPointe P, Simmonds AJ. The activity of the Drosophila Vestigial protein is modified by Scalloped-dependent phosphorylation. Dev Biol 2017; 425:58-69. [PMID: 28322734 DOI: 10.1016/j.ydbio.2017.03.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 02/01/2017] [Accepted: 03/14/2017] [Indexed: 12/18/2022]
Abstract
The Drosophila vestigial gene is required for proliferation and differentiation of the adult wing and for differentiation of larval and adult muscle identity. Vestigial is part of a multi-protein transcription factor complex, which includes Scalloped, a TEAD-class DNA binding protein. Binding Scalloped is necessary for translocation of Vestigial into the nucleus. We show that Vestigial is extensively post-translationally modified and at least one of these modifications is required for proper function during development. We have shown that there is p38-dependent phosphorylation of Serine 215 in the carboxyl-terminal region of Vestigial. Phosphorylation of Serine 215 occurs in the nucleus and requires the presence of Scalloped. Comparison of a phosphomimetic and non-phosphorylatable mutant forms of Vestigial shows differences in the ability to rescue the wing and muscle phenotypes associated with a null vestigial allele.
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Affiliation(s)
- Virginia L Pimmett
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G2H7
| | - Hua Deng
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G2H7; Howard Hughes Medical Institute, Dept. of Physiology, UT Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA
| | - Julie A Haskins
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G2H7
| | - Rebecca J Mercier
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G2H7
| | - Paul LaPointe
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G2H7
| | - Andrew J Simmonds
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada T6G2H7
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10
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From vestigial to vestigial-like: the Drosophila gene that has taken wing. Dev Genes Evol 2016; 226:297-315. [DOI: 10.1007/s00427-016-0546-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 04/10/2016] [Indexed: 12/16/2022]
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11
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Zhang CU, Blauwkamp TA, Burby PE, Cadigan KM. Wnt-mediated repression via bipartite DNA recognition by TCF in the Drosophila hematopoietic system. PLoS Genet 2014; 10:e1004509. [PMID: 25144371 PMCID: PMC4140642 DOI: 10.1371/journal.pgen.1004509] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 05/30/2014] [Indexed: 11/18/2022] Open
Abstract
The Wnt/β-catenin signaling pathway plays many important roles in animal development, tissue homeostasis and human disease. Transcription factors of the TCF family mediate many Wnt transcriptional responses, promoting signal-dependent activation or repression of target gene expression. The mechanism of this specificity is poorly understood. Previously, we demonstrated that for activated targets in Drosophila, TCF/Pangolin (the fly TCF) recognizes regulatory DNA through two DNA binding domains, with the High Mobility Group (HMG) domain binding HMG sites and the adjacent C-clamp domain binding Helper sites. Here, we report that TCF/Pangolin utilizes a similar bipartite mechanism to recognize and regulate several Wnt-repressed targets, but through HMG and Helper sites whose sequences are distinct from those found in activated targets. The type of HMG and Helper sites is sufficient to direct activation or repression of Wnt regulated cis-regulatory modules, and protease digestion studies suggest that TCF/Pangolin adopts distinct conformations when bound to either HMG-Helper site pair. This repressive mechanism occurs in the fly lymph gland, the larval hematopoietic organ, where Wnt/β-catenin signaling controls prohemocytic differentiation. Our study provides a paradigm for direct repression of target gene expression by Wnt/β-catenin signaling and allosteric regulation of a transcription factor by DNA. During development and in adult tissues, cells communicate with each other through biochemical cascades known as signaling pathways. In this report, we study the Wnt signaling pathway, using the fruit fly Drosophila as a model system. This pathway is known to activate gene expression in cells receiving the Wnt signal, working through a transcription factor known as TCF. But sometimes Wnt signaling also instructs TCF to repress target gene expression. What determines whether TCF will positively or negatively regulate Wnt targets? We demonstrate that activated and repressed targets have distinct DNA sequences that dock TCF on their regulatory DNA. The type of site determines the output, i.e., activation or repression. We find that TCF adopts different conformations when bound to either DNA sequence, which most likely influences its regulatory activity. In addition, we demonstrate that Wnt-dependent repression occurs robustly in the fly larval lymph gland, the tissue responsible for generating macrophage-like cells known as hemocytes.
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Affiliation(s)
- Chen U. Zhang
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Timothy A. Blauwkamp
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Peter E. Burby
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Ken M. Cadigan
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, Michigan, United States of America
- * E-mail:
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12
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Weitkunat M, Schnorrer F. A guide to study Drosophila muscle biology. Methods 2014; 68:2-14. [PMID: 24625467 DOI: 10.1016/j.ymeth.2014.02.037] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 02/25/2014] [Accepted: 02/28/2014] [Indexed: 10/25/2022] Open
Abstract
The development and molecular composition of muscle tissue is evolutionarily conserved. Drosophila is a powerful in vivo model system to investigate muscle morphogenesis and function. Here, we provide a short and comprehensive overview of the important developmental steps to build Drosophila body muscle in embryos, larvae and pupae. We describe key methods, including muscle histology, live imaging and genetics, to study these steps at various developmental stages and include simple behavioural assays to assess muscle function in larvae and adults. We list valuable antibodies and fly strains that can be used for these different methods. This overview should guide the reader to choose the best marker or the appropriate method to obtain high quality muscle morphogenesis data in Drosophila.
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Affiliation(s)
- Manuela Weitkunat
- Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Frank Schnorrer
- Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany.
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13
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Insights into insect wing origin provided by functional analysis of vestigial in the red flour beetle, Tribolium castaneum. Proc Natl Acad Sci U S A 2013; 110:16951-6. [PMID: 24085843 DOI: 10.1073/pnas.1304332110] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Despite accumulating efforts to unveil the origin of insect wings, it remains one of the principal mysteries in evolution. Currently, there are two prominent models regarding insect wing origin: one connecting the origin to the paranotal lobe and the other to the proximodorsal leg branch (exite). However, neither hypothesis has been able to surpass the other. To approach this conundrum, we focused our analysis on vestigial (vg), a critical wing gene initially identified in Drosophila. Our investigation in Tribolium (Coleoptera) has revealed that, despite the well-accepted view of vg as an essential wing gene, there are two groups of vg-dependent tissues in the "wingless" first thoracic segment (T1). We show that one of these tissues, the carinated margin, also depends on other factors essential for wing development (such as Wingless signal and apterous), and has nubbin enhancer activity. In addition, our homeotic mutant analysis shows that wing transformation in T1 originates from both the carinated margin and the other vg-dependent tissue, the pleural structures (trochantin and epimeron). Intriguingly, these two tissues may actually be homologous to the two proposed wing origins (paranotal lobes and exite bearing proximal leg segments). Therefore, our findings suggest that the vg-dependent tissues in T1 could be wing serial homologs present in a more ancestral state, thus providing compelling functional evidence for the dual origin of insect wings.
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de Joussineau C, Bataillé L, Jagla T, Jagla K. Diversification of muscle types in Drosophila: upstream and downstream of identity genes. Curr Top Dev Biol 2012; 98:277-301. [PMID: 22305167 DOI: 10.1016/b978-0-12-386499-4.00011-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Understanding gene regulatory pathways underlying diversification of cell types during development is one of the major challenges in developmental biology. Progressive specification of mesodermal lineages that are at the origin of body wall muscles in Drosophila embryos has been extensively studied during past years, providing an attractive framework for dissecting cell type diversification processes. In particular, it has been found that muscle founder cells that are at the origin of individual muscles display specific expression of transcription factors that control diversification of muscle types. These factors, encoded by genes collectively called muscle identity genes, are activated in discrete subsets of muscle founders. As a result, each founder cell is thought to carry a unique combinatorial code of identity gene expression. Considering this, to define temporally and spatially restricted expression of identity genes, a set of coordinated upstream regulatory inputs is required. But also, to realize the identity program and to form specific muscle types with distinct properties, an efficient battery of downstream identity gene targets needs to be activated. Here we review how the specificity of expression and action of muscle identity genes is acquired.
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Affiliation(s)
- Cyrille de Joussineau
- GReD INSERM UMR1103, CNRS UMR6293, University of Clermont-Ferrand, Clermont-Ferrand, France
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Carrasco-Rando M, Tutor AS, Prieto-Sánchez S, González-Pérez E, Barrios N, Letizia A, Martín P, Campuzano S, Ruiz-Gómez M. Drosophila araucan and caupolican integrate intrinsic and signalling inputs for the acquisition by muscle progenitors of the lateral transverse fate. PLoS Genet 2011; 7:e1002186. [PMID: 21811416 PMCID: PMC3141015 DOI: 10.1371/journal.pgen.1002186] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Accepted: 05/28/2011] [Indexed: 01/23/2023] Open
Abstract
A central issue of myogenesis is the acquisition of identity by individual muscles. In Drosophila, at the time muscle progenitors are singled out, they already express unique combinations of muscle identity genes. This muscle code results from the integration of positional and temporal signalling inputs. Here we identify, by means of loss-of-function and ectopic expression approaches, the Iroquois Complex homeobox genes araucan and caupolican as novel muscle identity genes that confer lateral transverse muscle identity. The acquisition of this fate requires that Araucan/Caupolican repress other muscle identity genes such as slouch and vestigial. In addition, we show that Caupolican-dependent slouch expression depends on the activation state of the Ras/Mitogen Activated Protein Kinase cascade. This provides a comprehensive insight into the way Iroquois genes integrate in muscle progenitors, signalling inputs that modulate gene expression and protein activity. In Drosophila, as in vertebrates, the muscular system consists of different types of muscles that must act in coordination with the nervous system to control the adequate release of contraction power required for the proper functioning of the organism. Therefore, the acquisition of specific identities by individual muscles is a key step in the generation of the muscular system. In Drosophila, muscle progenitors (specific myoblasts that seed the formation of mature muscles) integrate positional and temporal signalling inputs, resulting in the expression of unique combinations of muscle identity genes, which confer on them specific fates. Up to now, very little was known of how this integration takes place at a molecular level and how a particular code is translated into a specific muscle fate. Here we show that the acquisition of the lateral transverse muscle fate requires the repression mediated by Araucan and Caupolican, two homeoproteins of the Iroquois Complex, of other muscle identity genes, like slouch and vestigial. The repressor or activator function of the Iroquois proteins depends on the activity of the Ras signalling pathway. Therefore, our work places Iroquois genes at a nodal point that integrates signalling inputs and regulates protein activity and cell fate determination.
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Affiliation(s)
- Marta Carrasco-Rando
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
| | - Antonio S. Tutor
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
| | - Silvia Prieto-Sánchez
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
| | - Esther González-Pérez
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
| | - Natalia Barrios
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
| | - Annalisa Letizia
- Institut de Biologia Molecular de Barcelona, Consejo Superior de Investigaciones Científicas, Barcelona, Spain
| | - Paloma Martín
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
| | - Sonsoles Campuzano
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
| | - Mar Ruiz-Gómez
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas–Universidad Autónoma de Madrid, Madrid, Spain
- * E-mail:
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