Pathogenesis related proteins
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ABSTRACT:
PROVIDER: PRJEB21567 | ENA |
REPOSITORIES: ENA
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Project description:Analyzing culture supernatants of yeast and hyphal cells of Candida albicans by mass spectrometry, we found two close homologues of pathogenesis-related (PR-) 1 proteins, Rbe1p and Rbt4p, in the secretome of this human pathogen. By sequence homology, we assigned three yet not characterized open reading frames, ORF19.6200, ORF19.2787 and ORF19.2336, in addition to Rbe1p and Rbt4p to a novel family of proteins. Correspondent with our secretome analysis RBE1 was expressed in blastospores and opaque cells, whereas transcription was down-regulated in hyphae. On the contrary, RBT4 was up-regulated in hyphae and down-regulated in opaque cells. Remarkably, transcription of RBT4 and RBE1 was each up-regulated in blastospores of M-bM-^HM-^Frbe1 or hyphae of M-bM-^HM-^Frbt4 deletion strains, respectively, indicating a compensatory function of both proteins. In a M-bM-^HM-^Frbe1/M-bM-^HM-^Frbt4 double deletion strain, genome-wide transcriptional analysis showed differential transcription of a limited set of genes that are also implicated in virulence and oxidative stress response. In this context, deletion of RBE1 or RBT4 in a clinical C. albicans isolate resulted in a moderate but significant attenuation in virulence in a mouse model for disseminated candidiasis. However, a synergistic effect was observed in the M-bM-^HM-^Frbe1/M-bM-^HM-^Frbt4 double deletion strain, where virulence was strongly affected. Furthermore, the double deletion strain showed increased sensitivity to attack by polymorphonuclear leukocytes (neutrophils). Therfore, our data suggest that the crucial contribution of both C. albicans pathogenesis-related proteins for in vivo virulence results at least partially from reduced survival in phagocytes. Experiments were performed under blastospore (YPD) as well as hyphae (alpha-MEM)-inducing conditions. In total, three biological replicates were performed for each condition. All experiments were performed as dye swaps. Thus, in total six arrays have been hybridzed for each comparison (alpha-MEM and YPD, respectively). Hybridization experiments included a reference strain (C. albicans SC5314) and a double deletion strain (C. albicans MRC27). The array included one technical replicate of each probe.
2013-03-25 | E-GEOD-28212 | biostudies-arrayexpress
Project description:Analyzing culture supernatants of yeast and hyphal cells of Candida albicans by mass spectrometry, we found two close homologues of pathogenesis-related (PR-) 1 proteins, Rbe1p and Rbt4p, in the secretome of this human pathogen. By sequence homology, we assigned three yet not characterized open reading frames, ORF19.6200, ORF19.2787 and ORF19.2336, in addition to Rbe1p and Rbt4p to a novel family of proteins. Correspondent with our secretome analysis RBE1 was expressed in blastospores and opaque cells, whereas transcription was down-regulated in hyphae. On the contrary, RBT4 was up-regulated in hyphae and down-regulated in opaque cells. Remarkably, transcription of RBT4 and RBE1 was each up-regulated in blastospores of ∆rbe1 or hyphae of ∆rbt4 deletion strains, respectively, indicating a compensatory function of both proteins. In a ∆rbe1/∆rbt4 double deletion strain, genome-wide transcriptional analysis showed differential transcription of a limited set of genes that are also implicated in virulence and oxidative stress response. In this context, deletion of RBE1 or RBT4 in a clinical C. albicans isolate resulted in a moderate but significant attenuation in virulence in a mouse model for disseminated candidiasis. However, a synergistic effect was observed in the ∆rbe1/∆rbt4 double deletion strain, where virulence was strongly affected. Furthermore, the double deletion strain showed increased sensitivity to attack by polymorphonuclear leukocytes (neutrophils). Therfore, our data suggest that the crucial contribution of both C. albicans pathogenesis-related proteins for in vivo virulence results at least partially from reduced survival in phagocytes.
2013-03-25 | GSE28212 | GEO
Project description:RNA-Seq of 293T cells depleted of U2AF-related proteins
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Project description:Dysregulation of PDGFRB contributes to the pathogenesis of LMNA-related dilated cardiomyopathy
| PRJNA487115 | ENA
Project description:HSD17B10 binds to NEAT1 and CCAT1 might related to inflammatory bowel disease pathogenesis
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Project description:Dysregulation of PDGFRB contributes to the pathogenesis of LMNA-related dilated cardiomyopathy [RNA-seq]
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Project description:Dysregulation of PDGFRB contributes to the pathogenesis of LMNA-related dilated cardiomyopathy [ATAC-seq]
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Project description:Dysregulation of PDGFRB contributes to the pathogenesis of LMNA-related dilated cardiomyopathy [ChIP-seq]
| PRJNA487117 | ENA
Project description:This repository is related to the work” XCP1 cleaves Pathogenesis-related protein 1 into CAPE9 for systemic immunity in Arabidopsis”. In this study, we found that the C-terminal proteolytic processing of a caspase-like substrate motif “CNYD” within Pathogenesis-related protein 1 (PR1) generates an immunomodulatory cytokine (CAPE9) in Arabidopsis. Salicylic acid enhances CNYD-targeted protease activity and the proteolytic release of CAPE9 from PR1 in Arabidopsis. This process involves a protease exhibiting caspase-like enzyme activity, identified as Xylem cysteine peptidase 1 (XCP1). XCP1 exhibits a calcium-modulated pH-activity profile and a comparable activity to human caspases. XCP1 is required to induce systemic immunity triggered by pathogen-associated molecular patterns. This work reveals XCP1 as a key protease for plant immunity, which produces the cytokine CAPE9 from the canonical salicylic acid signaling marker PR1 to activate systemic immunity. The following files are stored here: one MS datasets (include .raw, preprocessed .mgf, and Mascot MS/MS ion search result .dat file) generated in this work, including: “Total identified endogenous peptides observed in SA-treated Arabidopsis leaves on Q Exactive HF (named as supplementaldata2)”
2023-07-20 | PXD041898 | Pride