scholarly journals rhomboid, a gene required for dorsoventral axis establishment and peripheral nervous system development in Drosophila melanogaster.

1990 ◽  
Vol 4 (2) ◽  
pp. 190-203 ◽  
Author(s):  
E Bier ◽  
L Y Jan ◽  
Y N Jan
Keyword(s):  
Nervous System ◽  
Drosophila Melanogaster ◽  
Peripheral Nervous System ◽  
System Development ◽  
Nervous System Development ◽  
Dorsoventral Axis

scholarly journals Single-cell visualization of mir-9a and Senseless co-expression during Drosophila melanogaster embryonic and larval peripheral nervous system development

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Lorenzo Gallicchio ◽  
Sam Griffiths-Jones ◽  
Matthew Ronshaugen
Keyword(s):  
Nervous System ◽  
Drosophila Melanogaster ◽  
Single Cell ◽  
Peripheral Nervous System ◽  
Single Molecule ◽  
Active Sites ◽  
System Development ◽  
Nervous System Development ◽  
Dynamic Regulation ◽  
Dynamic Relationship

Abstract The Drosophila melanogaster peripheral nervous system (PNS) comprises the sensory organs that allow the fly to detect environmental factors such as temperature and pressure. PNS development is a highly specified process where each sensilla originates from a single sensory organ precursor (SOP) cell. One of the major genetic orchestrators of PNS development is Senseless, which encodes a zinc finger transcription factor (Sens). Sens is both necessary and sufficient for SOP differentiation. Senseless expression and SOP number are regulated by the microRNA miR-9a. However, the reciprocal dynamics of Senseless and miR-9a are still obscure. By coupling single-molecule FISH with immunofluorescence, we are able to visualize transcription of the mir-9a locus and expression of Sens simultaneously. During embryogenesis, we show that the expression of mir-9a in SOP cells is rapidly lost as Senseless expression increases. However, this mutually exclusive expression pattern is not observed in the third instar imaginal wing disk, where some Senseless-expressing cells show active sites of mir-9a transcription. These data challenge and extend previous models of Senseless regulation and show complex co-expression dynamics between mir-9a and Senseless. The differences in this dynamic relationship between embryonic and larval PNS development suggest a possible switch in miR-9a function. Our work brings single-cell resolution to the understanding of dynamic regulation of PNS development by Senseless and miR-9a.

scholarly journals Single cell visualisation of mir-9a and Senseless co-expression during Drosophila melanogaster embryonic and larval peripheral nervous system development

2020 ◽  
Author(s):  
Lorenzo Gallicchio ◽  
Sam Griffiths-Jones ◽  
Matthew Ronshaugen
Keyword(s):  
Nervous System ◽  
Drosophila Melanogaster ◽  
Single Cell ◽  
Peripheral Nervous System ◽  
Active Sites ◽  
System Development ◽  
Wing Disc ◽  
Nervous System Development ◽  
Dynamic Regulation ◽  
Dynamic Relationship

AbstractThe Drosophila melanogaster peripheral nervous system (PNS) comprises the sensory organs that allow the fly to detect environmental factors such as temperature and pressure. PNS development is a highly specified process where each sensilla originates from a single sensory organ precursor (SOP) cell. One of the major genetic orchestrators of PNS development is Senseless, which encodes a zinc finger transcription factor (Sens). Sens is both necessary and sufficient for SOP differentiation. Senseless expression and SOP number are regulated by the microRNA miR-9a. However, the reciprocal dynamics of Senseless and miR-9a are still obscure. By coupling smFISH with immunofluorescence, we are able to visualize transcription of the mir-9a locus and expression of Sens simultaneously. During embryogenesis, we show that the expression of mir-9a in SOP cells is rapidly lost as Senseless expression increases. However, this mutually exclusive expression pattern is not observed in the third instar imaginal wing disc, where some Senseless-expressing cells show active sites of mir-9a transcription. These data challenge and extend previous models of Senseless regulation, and show complex co-expression dynamics between mir-9a and Senseless. The differences in this dynamic relationship between embryonic and larval PNS development suggest a possible switch in miR-9a function. Our work brings single-cell resolution to the understanding of dynamic regulation of PNS development by Senseless and miR-9a.

scholarly journals Functional dissection of the Pax6 paired domain: Roles in neural tube patterning and peripheral nervous system development

2016 ◽  
Vol 413 (1) ◽  
pp. 86-103 ◽  
Author(s):  
Rosa-Eva Huettl ◽  
Simone Eckstein ◽  
Tessa Stahl ◽  
Stefania Petricca ◽  
Jovica Ninkovic ◽  
...  
Keyword(s):  
Nervous System ◽  
Peripheral Nervous System ◽  
Neural Tube ◽  
System Development ◽  
Nervous System Development ◽  
Paired Domain

scholarly journals Genetic Basis of Variation in Cocaine and Methamphetamine Consumption in Outbred Populations of Drosophila melanogaster

2021 ◽  
Author(s):  
Brandon M. Baker ◽  
Mary Anna Carbone ◽  
Wen Huang ◽  
Robert R. H. Anholt ◽  
Trudy F. C. Mackay
Keyword(s):  
Nervous System ◽  
Drosophila Melanogaster ◽  
Genetic Basis ◽  
Genetic Model ◽  
System Development ◽  
Gene Interaction ◽  
Nervous System Development ◽  
Drug Consumption ◽  
Human Populations ◽  
And Function

AbstractWe used Drosophila melanogaster to map the genetic basis of naturally occurring variation in voluntary consumption of cocaine and methamphetamine. We derived an outbred advanced intercross population (AIP) from 37 sequenced inbred wild-derived lines of the Drosophila melanogaster Genetic Reference Panel (DGRP), which are maximally genetically divergent, have minimal residual heterozygosity, are not segregating for common inversions, and are not infected with Wolbachia pipientis. We assessed consumption of sucrose, methamphetamine-supplemented sucrose and cocaine-supplemented sucrose, and found considerable phenotypic variation for consumption of both drugs, in both sexes. We performed whole genome sequencing and extreme QTL mapping on the top 10% of consumers for each replicate, sex and condition, and an equal number of randomly selected flies. We evaluated changes in allele frequencies among high consumers and control flies and identified 3,033 variants significantly (P < 1.9 × 10-8) associated with increased consumption, located in or near 1,962 genes. Many of these genes are associated with nervous system development and function, and 77 belong to a known gene-gene interaction subnetwork. We assessed the effects of RNA interference (RNAi) on drug consumption for 22 candidate genes; 17 had a significant effect in at least one sex. We constructed allele-specific AIPs which were homozygous for alternative candidate alleles for 10 SNPs and measured average consumption for each population; nine SNPs had significant effects in at least one sex. The genetic basis of voluntary drug consumption in Drosophila is polygenic and implicates genes with human orthologs and associated variants with sex- and drug-specific effects.Significance StatementThe use of cocaine and methamphetamine presents significant socioeconomic problems. However, identifying the genetic underpinnings that determine susceptibility to substance use is challenging in human populations. The fruit fly, Drosophila melanogaster, presents a powerful genetic model since we can control the genetic background and environment, 75% of disease-causing genes in humans have a fly counterpart, and flies - like humans - exhibit adverse effects upon cocaine and methamphetamine exposure. We showed that the genetic architecture underlying variation in voluntary cocaine and methamphetamine consumption differs between sexes and is dominated by variants in genes associated with connectivity and function of the nervous system. Results obtained from the Drosophila gene discovery model can guide studies on substance abuse susceptibility in human populations.

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