Unknown,Transcriptomics,Genomics,Proteomics

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Expression profile of third instar larvae tissues from wild type and bsAS mutant flies

ABSTRACT: Our data on third instar larvae tissues of Drosophila melanogaster has allowed us to identify bsAS, a lncRNA antisense to the blistered/DSRF gene, orthologous to the SRF transcription factor in humans, mainly expressed in fly wings. bsAS controls the expression of different isoforms of the blistered gene in Drosophila tissues. CRISPR-CAS deletion of bsAS Transcription Start Site thoroughly abolishes bsAS transcription, inducing a change in the bs isoform usage and the impairment of wing development. Our data consists on stranded RNA-Seq from eye-antenna, leg and wing imaginal discs from third instar larvae. To analyse bsAS mutation, we also performed stranded RNA-Seq of wild type and bsAS-/- eyes and wings from third instar larvae and late pupae.

INSTRUMENT(S): Illumina HiSeq 2000

ORGANISM(S): Drosophila melanogaster

SUBMITTER: Sílvia Pérez-Lluch

PROVIDER: E-MTAB-7653 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Amongst the various different insect groups, there is remarkable diversity in the number and size of wings. However the development of the basic body plan in insects is similar to a large extent. The genes of the hox complex regulate various pathways to bring about the development or modification of different organs. Ubx, a gene of the bithorax hox complex is expressed in the third thoracic segment of insects and is known to specify the fate of wing appendage in that segment.To understand the role of Ubx and how its regulatory mechanism has evolved through the course of evolution we have compared its genome wide targets in different insect orders. The identification of regulatory pathways and the key players Ubx regulates is crucial to understand how it has controlled wing development across insect orders. Our lab has previously identified direct targets of Ubx in Drosophila using ChIP-chip (Agrawal et al, 2011). To further our knowledge on the role of regulation in development and modification of hind wing appendage we have studied the targets in the hind wings of other insects (silk moth; Lepidoptera and honeybee; Hymenoptera) and performed a comparative analysis.To understand the differential development of wing appendages in insects we intend to compare the differential expression of fore and hind wing appendages in Diptera and Lepidoptera. We have employed RNA-seq using by illumina sequencing to identify the genes that are differentially expressed between fore and the hind wing bud of the Bombyx larvae. Only one replicate was performed as the intended study was to validate the differential targets in comparison to ChIP studies and other methods of select candidates. Total RNA was extarcted from wing buds of IV instar Bombyx larvae and sequenced on an illumina sequencer. Wing buds were collected directly in liquid nitrogen and 80 such buds each for fore and hind wing were collected from IV instar larvae. RNA was isolated from them and processed for Library preperation and illumina sequencing. One replicate was done as a supplement to ChIP studies.

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Expression profile of third instar larvae tissues from wild type and bsAS mutant flies

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