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Ostalé CM, Vega-Cuesta P, González T, López-Varea A, de Celis JF. RNAi screen in the Drosophila wing of genes encoding proteins related to cytoskeleton organization and cell division. Dev Biol 2023; 498:61-76. [PMID: 37015290 DOI: 10.1016/j.ydbio.2023.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/04/2023]
Abstract
Cell division and cytoskeleton organization are fundamental processes participating in the development of Drosophila imaginal discs. In this manuscript we describe the phenotypes in the adult fly wing generated by knockdowns of 85% of Drosophila genes encoding proteins likely related to the regulation of cell division and cytoskeleton organization. We also compile a molecular classification of these proteins into classes that describe their expected or known main biochemical characteristics, as well as mRNA expression in the wing disc and likely protein subcellular localization for a subset of these genes. Finally, we analyze in more detail one protein family of cytoskeleton genes (Arp2/3 complex), and define the consequences of interfering with cell division for wing growth and patterning.
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A genetic strategy to measure insulin signaling regulation and physiology in Drosophila. PLoS Genet 2023; 19:e1010619. [PMID: 36730473 PMCID: PMC9928101 DOI: 10.1371/journal.pgen.1010619] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 02/14/2023] [Accepted: 01/15/2023] [Indexed: 02/04/2023] Open
Abstract
Insulin regulation is a hallmark of health, and impaired insulin signaling promotes metabolic diseases like diabetes mellitus. However, current assays for measuring insulin signaling in all animals remain semi-quantitative and lack the sensitivity, tissue-specificity or temporal resolution needed to quantify in vivo physiological signaling dynamics. Insulin signal transduction is remarkably conserved across metazoans, including insulin-dependent phosphorylation and regulation of Akt/Protein kinase B. Here, we generated transgenic fruit flies permitting tissue-specific expression of an immunoepitope-labelled Akt (AktHF). We developed enzyme-linked immunosorption assays (ELISA) to quantify picomolar levels of phosphorylated (pAktHF) and total AktHF in single flies, revealing dynamic tissue-specific physiological regulation of pAktHF in response to fasting and re-feeding, exogenous insulin, or targeted genetic suppression of established insulin signaling regulators. Genetic screening revealed Pp1-87B as an unrecognized regulator of Akt and insulin signaling. Tools and concepts here provide opportunities to discover tissue-specific regulators of in vivo insulin signaling responses.
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López-Varea A, Vega-Cuesta P, Ruiz-Gómez A, Ostalé CM, Molnar C, Hevia CF, Martín M, Organista MF, de Celis J, Culí J, Esteban N, de Celis JF. Genome-wide phenotypic RNAi screen in the Drosophila wing: phenotypic description of functional classes. G3 (BETHESDA, MD.) 2021; 11:6380434. [PMID: 34599810 PMCID: PMC8664486 DOI: 10.1093/g3journal/jkab349] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 09/23/2021] [Indexed: 01/01/2023]
Abstract
The Drosophila genome contains approximately 14,000 protein-coding genes encoding all the necessary information to sustain cellular physiology, tissue organization, organism development, and behavior. In this manuscript, we describe in some detail the phenotypes in the adult fly wing generated after knockdown of approximately 80% of Drosophila genes. We combined this phenotypic description with a comprehensive molecular classification of the Drosophila proteins into classes that summarize the main expected or known biochemical/functional aspect of each protein. This information, combined with mRNA expression levels and in situ expression patterns, provides a simplified atlas of the Drosophila genome, from housekeeping proteins to the components of the signaling pathways directing wing development, that might help to further understand the contribution of each gene group to wing formation.
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Affiliation(s)
- Ana López-Varea
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Patricia Vega-Cuesta
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Ana Ruiz-Gómez
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Cristina M Ostalé
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Cristina Molnar
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain.,IRB Barcelona, Barcelona 08028, Spain
| | - Covadonga F Hevia
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Mercedes Martín
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Maria F Organista
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Jesus de Celis
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Joaquín Culí
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Nuria Esteban
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Jose F de Celis
- Centro de Biología Molecular "Severo Ochoa," CSIC and Universidad Autónoma de Madrid, Madrid 28049, Spain
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