Primary Sjogren's syndrome and control whole saliva
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE7451 | GEO | 2007/12/31
SECONDARY ACCESSION(S): PRJNA100229
REPOSITORIES: GEO
Similar Datasets
Project description:10 saliva samples from patients with primary Sojgren's syndrome and 10 saliva samples from control subjects Experiment Overall Design: Gene profilling from 10 saliva samples from patients with primary Sojgren's syndrome and 10 saliva samples from control subjects using Affymetrix HGu133+2 microarray.
2008-06-15 | E-GEOD-7451 | biostudies-arrayexpress
Project description:The objective of the study was to identify gene expression signatures in minor salivary glands (MSGs) from patients with primary Sjogren's syndrome (SS). METHODS: A 16K complementary DNA microarray was used to generate gene expression profiles in MSGs obtained from 10 patients with primary SS and 10 control subjects. The data were analyzed by 2 different strategies, one strict primary analysis and one subanalysis that allowed for inclusion of genes with no signal in more than 3 samples from each group. The results were validated by quantitative reverse transcriptase-polymerase chain reaction techniques. RESULTS: We found a distinct difference in gene expression levels in MSGs, enabling a simple class prediction method to correctly classify 19 of the 20 samples as either patient or control, based on the top 5 differentially expressed genes. The 50 most differentially expressed genes in the primary SS group compared with the control group were all up-regulated, and a clear pattern of genes involved in chronic inflammation was found. CXCL13 and CD3D were expressed in >/=90% of primary SS patients and in </=10% of the controls. Lymphotoxin beta, as well as a number of major histocompatibility complex genes, cytokines, and lymphocyte activation factors, manifested its role in the pathogenesis of SS. Numerous type I interferon genes related to virus infection were found among the top 200 genes, with increased expression in primary SS. Interestingly, the expression of carbonic anhydrase II, which is essential in saliva production and secretion, and the apoptosis regulator Bcl-2-like 2 were down-regulated in primary SS patients. CONCLUSION: We have identified distinct gene expression profiles in MSGs from patients with primary SS that provide new knowledge about groups of genes that are up-regulated or down-regulated during disease, constituting an excellent platform for forthcoming functional studies.
2013-11-14 | E-MTAB-2073 | biostudies-arrayexpress
Project description:Affymetrix HG U133 Plus 2.0 Array (Affymetrix, Santa Clara, CA) was used to profile transcriptomes and discover altered gene expression in saliva supernatant. Salivary transcriptomic biomarker discovery was performed on 10 lung cancer patients and 10 matched controls. Seven messenger RNA biomarkers were discovered and pre-validated This study consisted of two phases, including a discovery phase, followed by a pre-validation phase. 10 lung cancer samples and 10 matched control samples were chosen for the biomarker discovery phase. The transscriptomic approach profiled the saliva supernatant samples from 10 lung cancer patients and 10 healthy control subjects using the Affymetrix HG U133 Plus 2.0 Array (Affymetrix, Santa Clara, CA). Biomarkers identified from the microarray study were first verified using the discovery sample set (10 lung cancer and 10 healthy control).
2013-01-11 | E-GEOD-32175 | biostudies-arrayexpress
Project description:Decreased salivary flow is one of the most common symptoms in primary Sjögren syndrome (pSS). The present study was designed to identify a salivary protein biomarker related to saliva secretion disorder in NOD/ShiLtJ mice, a pSS primary murine model. The stimulated saliva was collected from NOD/ShiLtJ and BALB/c mice as controls for differential proteomic analysis.
2018-03-21 | PXD008199 | Pride
Project description:Genome wide DNA methylation profiling of saliva DNA from 197 alcohol dependent subjects. The Illumina Infinium 27k Human DNA methylation Beadchip v1.2 was used to obtain DNA methylation profiles across approximately 27,000 CpGs in saliva samples.
2011-12-01 | GSE34035 | GEO
Project description:Sjogren’s syndrome (SS) is characterized by dysfunctional mucous membranes and dysregulated moisture-secreting glands resulting in various symptoms, including dry mouth and dry eyes. Here, we wanted to compare the saliva proteomes of SS mice to healthy controls. Saliva samples were collected and subjected to proteomics workflow to identify alterations in protein levels. We identified differentially expressed genes, including 116 upregulated and 137 downregulated. At same time, dysregulated biological processes mainly focus on cellular, metabolic and immune process.The KEGG analysis showed that complement and coagulation cascades, primarily immunodeficiency, systemic lupus erythematosus, and B cell receptor signaling pathway were riched. We further analyzed DEPs and founded Fn1, klk1b26, HPX and AGT were higher connection scores. These findings improve our mechanistic understanding of the disease and changes in SS mice protein expression will help identify new potential drug targets.
2022-11-11 | PXD038092 |
Project description:Objective: The aim of this study was to characterize and compare the proteome in whole saliva, plasma, and salivary gland tissue in patients with primary Sjögren’s syndrome (pSS) and patients having symptoms of pSS, but not fulfilling the classification criteria, and to search for diagnostic biomarker candidates for pSS. Methods: Liquid chromatography tandem mass spectrometry was conducted on whole saliva, plasma, and labial salivary gland tissue samples from 24 patients with pSS and 16 non-Sjögren control subjects (non-pSS). Gene Ontology (GO)-terms and Kyoto Encyclopedia of Genes and Genomes (KEGG)-pathways were applied for functional annotation. Results: 1,013 proteins were identified in whole saliva, 219 in plasma, and 3,166 in salivary gland tissue. In saliva, 40 proteins differed significantly between the two groups. In pSS, proteins involved in immunoinflammatory processes were upregulated, whereas proteins related to salivary secretion were downregulated. The combination of neutrophil elastase, calreticulin, and tripartite motif-containing protein 29 yielded a receiver-operating characteristic (ROC) value of 0.97 (CI 0.93-1.00). Protein expression in plasma and salivary gland tissue did not differ between the patient groups. Conclusion: The salivary proteome of patients with pSS differed from that of non-pSS patients, indicating that saliva proteomics represents a promising non-invasive diagnostic tool for pSS.
2020-07-09 | PXD016231 | Pride
Project description:Exosomes are molecular entities derived from membrane vesicles of endocytic origin secreted by most cell types. These vesicles are implicated in cell-to-cell communication, deliver proteins and mRNA molecules between cells. Recent studies have shown that exosomes are found in body fluids such as saliva, blood, urine, amniotic fluid, malignant ascites, bronchoalveolar lavage fluid, synovial fluids and breast milk. Exosomes secreted through human saliva contain mRNA may potentially be useful for diagnostic purposes. Although the exact protective mechanism of saliva RNA is a topic of debate, the consensus is that the enrichment of mRNAs in these nano-vesicles in one of the features of the biomarker discoveries. Our aim was to determine if exosomes are present in human saliva and to nano-characterize their transcriptomic content. Exosomes were purified by differential ultracentrifugation, identified by immunoelectron microscopy, flow cytometry and western blot using a CD-63 antibody. Atomic force microscopy studies revealed ultra structural analysis of both size and density of exosomes. Microarray analysis revealed the presence of 590 mRNA core transcripts are relatively stable inside the exosomes, which can be of saliva mRNA biomarkers. Exosomal mRNA stability was determined by detergent lyses with treatment of RNase. Under in vitro conditions fluorescent dye labeled saliva exosomes were able to communicate between human oral keratinocytes studied by using fluorescence microscopy. The RNA from saliva exosomes can transfer their genetic information to human oral keratinocytes and alters gene expression in the new location. Together, these results suggest that saliva is involved in mRNA trafficking via exosomes, and provides a mechanism for cargoing passenger mRNAs. Our findings are consistent with proposal that exosomes can shuttle RNAs between cells and mRNA is protected inside these vesicles may be a possible resource for biomarker discovery. Experiment Overall Design: Human saliva exosomes were purified through differential centrifugation followed by RNA extraction and hybridization on Affymetrix microarrays. We were able to obtain normal human subjects saliva which are pooled and subjected to ultracentrifugation. The protocol was approved by UCLA Institutional review board. 1 ml of saliva exosomes were used to extract RNA followed by two rounds of amplification by Actorus Amp kit. The amplified RNA was biotin labled and hybridized with Affymetrix protocol.
2008-11-15 | E-GEOD-13494 | biostudies-arrayexpress
Project description:The diagnosis of primary Sjögren's syndrome (pSS) is difficult due to the lack of specific laboratory and clinical tests. As an initial step for the global discovery of changes in the abundance of parotid salivary proteins in pSS, a pooled sample was compared to that from healthy control subjects by multidimensional protein identification technology (MudPIT). A total of 1246 proteins were identified by MudPIT. The abundance of 477 of these proteins did not change, 529 were only detected in either the pSS or HC sample, while 206 of these proteins were significantly upregulated ? twofold and 34 were downregulated ? 0.5. Ingenuity Pathway Analyses of differentially expressed proteins identified by MudPIT resulted in the identification of 100 significant pathways. The same samples were quantified in parallel using RP MS. Fifty-eight of 71 proteins identified by RP overlapped with MudPIT results. Five proteins were further analyzed by targeted label-free quantification to confirm the similar relative differential expression observed by RP and MudPIT approaches. The present study supports the use of MS for global discovery and validation of marker proteins for improved and early diagnosis of pSS.
| S-EPMC3806318 | biostudies-literature