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Associations between pre-diagnostic aspirin use and ovarian tumor gene expression

ABSTRACT: Associations between pre-diagnostic aspirin use and ovarian tumor gene expression

PROVIDER: PRJNA961711 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24300700_1.fastq.gz	Fastqsanger.gz
	SRR24300700_2.fastq.gz	Fastqsanger.gz
	SRR24300800_1.fastq.gz	Fastqsanger.gz
	SRR24300800_2.fastq.gz	Fastqsanger.gz
	SRR24300701_1.fastq.gz	Fastqsanger.gz

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Associations between pre-diagnostic aspirin use and ovarian tumor gene expression

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Project description:Aspirin-exacerbated respiratory disease (AERD) is one phenotype of asthma, often in the form of a severe and sudden attack. Due to time consuming and laborious oral aspirin challenge (OAC) for diagnosis of AERD, non-invasive biomarkers have been searched. Therefore, we scrutinize AERD-associated exonic SNPs and examine the diagnostic potential of combination of these candidate SNPs to predict AERD DNA obtained from 164 AERD subjects, 397 subjects with aspirin-tolerant asthma (ATA), 398 normal controls and 10 null samples were subjected to Exome Chip assay of 240K SNPs. 1023 model (210-1) were generated from combination of the top 10 SNPs selected by p-values. The area under the curve (AUC) value of receiver operating characteristic (ROC) curves was calculated for each model. SNP functional Portal and PolyPhen-2 was used to validate the functional significance of the candidate SNPs

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Associations between prediagnostic aspirin use and ovarian tumor gene expression.

Project description:BackgroundAspirin use has been associated with reduced ovarian cancer risk, yet the underlying biological mechanisms are not fully understood. To gain mechanistic insights, we assessed the association between prediagnosis low and regular-dose aspirin use and gene expression profiles in ovarian tumors.MethodsRNA sequencing was performed on high-grade serous, poorly differentiated, and high-grade endometrioid ovarian cancer tumors from the Nurses' Health Study (NHS), NHSII, and New England Case-Control Study (n = 92 cases for low, 153 cases for regular-dose aspirin). Linear regression identified differentially expressed genes associated with aspirin use, adjusted for birth decade and cohort. False discovery rates (FDR) were used to account for multiple testing and gene set enrichment analysis was used to identify biological pathways.ResultsNo individual genes were significantly differentially expressed in ovarian tumors in low or regular-dose aspirin users accounting for multiple comparisons. However, current versus never use of low-dose aspirin was associated with upregulation of immune pathways (e.g., allograft rejection, FDR = 5.8 × 10-10 ; interferon-gamma response, FDR = 2.0 × 10-4 ) and downregulation of estrogen response pathways (e.g., estrogen response late, FDR = 4.9 × 10-8 ). Ovarian tumors from current regular aspirin users versus never users were also associated with upregulation in interferon pathways (FDR <1.5 × 10-4 ) and downregulation of multiple extracellular matrix (ECM) architecture pathways (e.g., ECM organization, 4.7 × 10-8 ).ConclusionOur results suggest low and regular-dose aspirin may impair ovarian tumorigenesis in part via enhancing adaptive immune response and decreasing metastatic potential supporting the likely differential effects on ovarian carcinogenesis and progression by dose of aspirin.

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Transcriptome-wide in vitro effects of aspirin on patient-derived normal colon organoids

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Half-lives of aspirin-mediated lysine acetylations

Project description:Aspirin, or acetylsalicylic acid is widely used to control pain, inflammation and fever. An important property of aspirin is its ability to acetylate multiple cellular proteins with some pharmacological functions explicable by the irreversible acetylation of cyclooxygenases at active site serine residues. We have used a labeled form of aspirin, aspirin-d3 to acetylate proteins in cultured human cells, and unambiguously identified over 12000 sites of acetylation, using acetylated lysine peptide enrichment combined with mass-spectrometry-based proteomics. Aspirin increases lysine acetylation occupancy of the majority of detected endogenous sites, but leaves almost unchanged a small group that are already highly acetylated. We show that cells are remarkably tolerant of this acetylation insult unless endogenous deacetylases are inhibited. This work raises the possibility that rather than single protein effects, some of the clinical features of aspirin may be the consequence of multiple concurrent protein modifications, and that combining aspirin with lysine deacetylase inhibitors may have important medical implications.

2019-03-05 | PXD003655 | Pride

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