PXD010753

PXD010753 is an original dataset announced via ProteomeXchange.

Title	Proteomics of Asrij perturbed Drosophila lymph glands as a resource for identification of new regulators of hematopoiesis
Description	Hematological disorders result in perturbed homeostasis of the blood system. However, a comprehensive understanding of how physiological and genetic mechanisms regulate blood cell precursor maintenance and differentiation is lacking. Owing to simplicity and ease of genetic analysis, the Drosophila melanogaster lymph gland (LG) is an excellent model to study hematopoiesis. The LG is a multi-lobed structure compartmentalized into precursor and differentiation zones whose geography and identity is regulated by multiple signalling pathways. While additional molecular and functional subtypes are expected there is a paucity of information on gene expression and regulation of hemocyte homeostasis. Hence, we quantitatively analyzed the LG proteome under conditions that maintain precursors or promote their differentiation in vivo, by perturbing expression of Asrij, a conserved endosomal regulator of hematopoiesis. Although technically demanding, we pooled samples obtained from 1500 larval dissections per genotype and using iTRAQ quantitative proteomics, determined the relative expression levels of polypeptides in Asrij knockout (KO) and overexpressing (OV) LGs in comparison to wild type (control). Mass spectrometry data analysis showed that at least 6.5% of the Drosophila proteome is expressed in wild type LGs.Of 2,133 proteins identified, 780 and 208 proteins were common to the previously reported cardiac tube and hemolymph proteomes, respectively, resulting in the identification of 1238 proteins exclusive to the LG. Perturbation of Asrij levels led to differential expression of 619 proteins, of which 23% have human homologs implicated in various diseases. Proteins regulating metabolism, immune system, signal transduction and vesicle-mediated transport were significantly enriched. Immunostaining of representative candidates from the enriched categories and previous reports confirmed 75% of our results and validated the LG proteome. Our study provides, for the first time, an in vivo proteomics resource for identifying novel regulators of hematopoiesis that will also be applicable to understanding vertebrate blood cell development.
HostingRepository	PRIDE
AnnounceDate	2019-05-15
AnnouncementXML	Submission_2019-05-15_00:46:21.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Keshava Prasad T. S.
SpeciesList	scientific name: Drosophila melanogaster (Fruit fly); NCBI TaxID: 7227;
ModificationList	iTRAQ4plex-116 reporter+balance reagent acylated residue; monohydroxylated residue; iodoacetamide derivatized residue
Instrument	LTQ Orbitrap Velos

Revision	Datetime	Status	ChangeLog Entry
0	2018-08-10 06:33:43	ID requested
⏵ 1	2019-05-15 00:46:22	announced

Dataset with its publication pending

curator keyword: Biological, Biomedical

submitter keyword: Drosophila hematopoiesis, proteome, lymph gland, Asrij, ESCRT, differential regulation

Keshava Prasad
contact affiliation	Institute of Bioinformatics, International Technology Park, Bangalore 560066
contact email	keshav@ibioinformatics.org
lab head
Keshava Prasad T. S.
contact affiliation	Institute of Bioinformatics, Bangalore, Karnataka, India.
contact email	keshav@ibioinformatics.org
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD010753
     1. Label: PRIDE project
     2. Name: Proteomics of Asrij perturbed Drosophila lymph glands as a resource for identification of new regulators of hematopoiesis