Dataset Information

Mass spectrometry analysis of the blood plasma and serum samples from healthy donors before and after a meal

ABSTRACT: Serum samples were taken from four healthy donors before a meal and 3, 5, 7, 9 h after a meal (Supplementary Table S6, Sheet 1). The analysis of the serum peptidome against the HuMiProt90 database showed that the amount of non-human peptides (potentially bacterial peptides) in the bloodstream significantly increased 5 h after a meal (Figure 3D, Supplementary Table S6, Sheet 3). The comparison of these data with the transit time of food in different parts of the gastrointestinal tract suggests that bacterial peptides enter the bloodstream predominantly in the small intestine. At the same time, phyla Proteobacteria, Firmicutes and Actinobacteria are the main contributors to the increase in (potentially) bacterial peptides 5 h after a meal (Supplementary Table S6, Sheets 5 and 6).

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Blood Serum

DISEASE(S): Disease Free

SUBMITTER: Georgij Arapidi

LAB HEAD: Georgij Pavlovich Arapidi

PROVIDER: PXD027618 | Pride | 2024-06-14

REPOSITORIES: Pride

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Dataset's files

Source:

			Action	DRS
	Description_of_samples.xlsx	Xlsx
	HealthyDonors_BeforeAfterEat_HuMiProt-90_19_2_Condensed.sf3	Other
	HuMiProt90_20200401_TnRev.fasta	Fasta
	Microorganisms_of_human_microbiota.xlsx	Xlsx
	P969.dat	Other

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Project description:Mosquitoes possess an innate immune system that is capable of limiting infection by a variety of pathogens, including the Plasmodium spp. parasites responsible for human malaria. The Anopheles immune deficiency (IMD) innate immune signaling pathway confers resistance to Plasmodium falciparum. While some previously identified Anopheles anti-Plasmodium effectors are regulated through signaling by Rel2, the transcription factor of the IMD pathway, many components of this defense system remain uncharacterized. To begin to better understand the regulation of immune effector proteins by the IMD pathway, we used oligonucleotide microarrays and iTRAQ to analyze differences in mRNA and protein expression, respectively, between transgenic An. stephensi mosquitoes exhibiting blood meal-inducible overexpression of an active recombinant Rel2 and their wild-type conspecifics. Numerous genes were differentially regulated at both the mRNA and protein levels following induction of Rel2. While multiple immune genes were up-regulated, a majority of the differentially expressed genes have no known immune function in mosquitoes. Identified sequences were assigned putative functions and gene ontology (GO) terms based on homology to previously annotated A. gambiae gene sequences. Selected up-regulated genes from multiple GO categories were tested for both anti-Plasmodium and anti-bacterial action using RNA interference (RNAi). Based on our experimental findings, we conclude that increased expression of the IMD immune pathway-controlled transcription factor Rel2 affects the expression of numerous genes with diverse functions, suggesting a broader physiological impact of immune activation and possible functional versatility of Rel2. Our study has identified multiple novel anti-Plasmodium effectors. Midguts from midgut-specific transgenic A. stephensi at 6 and 12 hours post-blood meal and fat bodies from fat body-specific transgenic A. stephensi at 12 and 18 hours post-blood meal were compared to wild-type A. stephensi at the same time points. 3 biological replicates and 1 pseudo-replicate per array.

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Mass spectrometry analysis of the blood plasma and serum samples from healthy donors before and after a meal

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