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Transcriptomic profiling of peripheral blood mononuclear cells from patients with Parkinson’s disease and control subjects.

ABSTRACT: To get insight into systemic molecular events associated with Parkinson’s disease (PD), an age-related neurodegenerative disorder, we compared gene expression patterns of peripheral blood mononuclear cells (PBMC) derived from elderly healthy controls and from PD patients.

ORGANISM(S): Homo sapiens

PROVIDER: GSE22491 | GEO | 2012/03/20

SECONDARY ACCESSION(S): PRJNA128683

REPOSITORIES: GEO

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Transcriptomic profiling of peripheral blood mononuclear cells from patients with Parkinson's disease and control subjects

Project description:To get insight into systemic molecular events associated with Parkinson's disease (PD), an age-related neurodegenerative disorder, we compared gene expression patterns of peripheral blood mononuclear cells (PBMC) derived from elderly healhy controls and from PD patients.

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Transcriptomic profiling of peripheral blood mononuclear cells from patients with ParkinsonM-bM-^@M-^Ys disease and control subjects.

Project description:To get insight into systemic molecular events associated with ParkinsonM-bM-^@M-^Ys disease (PD), an age-related neurodegenerative disorder, we compared gene expression patterns of peripheral blood mononuclear cells (PBMC) derived from elderly healthy controls and from PD patients. Transcriptomic profiling of patients with ParkinsonM-bM-^@M-^Ys disease and control subjects. RNA were extracted from peripheral mononuclear blood cells and were hybridized on 4x44k Agilent expression microarrays.

2012-03-20 | E-GEOD-22491 | biostudies-arrayexpress

Transcriptional analysis of peripheral memory T cells reveals Parkinson’s disease-specific gene signatures

Project description:Parkinson’s disease (PD) is a multi-stage neurodegenerative disorder with largely unknown etiology. To further characterize the role of T cells in PD associated autoimmunity, we performed RNA sequencing on PBMC and peripheral CD4 and CD8 memory T cell subsets derived from PD patients and age-matched healthy controls. Considering T cell reactivity to -syn, the study revealed a broad differential gene expression profile in memory T cell subsets and a specific PD associated gene signature. This study found a significant enrichment of transcriptomic signatures previously associated with PD, such as oxidative stress and phosphorylation, autophagy of mitochondria, cholesterol metabolism, and inflammation. We also identified novel genes associated with PD, including xx. Altogether, the findings in this study suggest that the study of circulating T cells from PD subjects with an ongoing -syn-specific T cell response may provide new insights to understand the complexity of the disease and suggest potential intervention targets.

2021-06-14 | GSE174473 | GEO

A splice isoform signature of Parkinson’s disease in peripheral blood

Project description:In these studies, we used splice variant-specific microarrays manufactured by the ExonHit company ( www.exonhit.com) on the Affymetrix platform. The goal was to identify splice isoforms whose expression is altered in whole blood of early-stage Parkinson’s disease patients compared to healthy and neurodegenerative disease controls. The study included 19 cases of Parkinson’s disease (PD) samples, 4 of multiple system atrophy (MSA), 4 progressive supranuclear palsy (PSP) and 10 healthy controls. Thirteen splice variants were confirmed in quantitative polymerase chain reactions and used to classify blinded samples from Parkinson’s disease patients and controls with 90% accuracy and 94% sensitivity.

2012-12-01 | GSE34287 | GEO

mRNA expression profiling of mitochondrial subunits in subjects with Parkinson’s disease

Project description:Introduction: Parkinson's disease (PD), typically developing between the ages of 55 and 65 years, is a common neurodegenerative disorder caused by a progressive loss of dopaminergic neurons due to the accumulation of α-synuclein in the substantia nigra. Mitochondria are known to play a key role in cell respiratory function and bioenergetic. Indeed, mitochondrial dysfunction causes an insufficient energy production required to satisfy the needs of several organs, especially the nervous system. Material and methods: The present study explored the mRNA expression of mitochondrial DNA (mtDNA) encoded respiratory chain (RC) subunits in PD patients by using the next generation sequencing analysis (NGS) and the quantitative real-time PCR (qRT-PCR) assay for the confirmation of the NGS results. Results: All tested mitochondrial RC subunits was significantly over-expressed in subjects with PD compared to normal controls . In qRT-PCR the mean expression of all mitochondrial subunits had an expression level of at least 7 times compared to controls. Conclusion: The over-expression of mitochondrial subunits in PD subjects might be secondary to a degeneration-related alteration of the mitochondrial structure or dynamics or to the occurrence of a compensatory mechanism. The study of specific mRNA by peripheral blood mononuclear cells (PBMCs) may provide a better diagnostic frame to early detect PD cases.

2022-01-01 | E-MTAB-9950 | biostudies-arrayexpress

Expression profiling of peripheral blood mononuclear cells in normal controls and patients with Parkinson's disease

Project description:Autophagy is a highly conserved degradation pathway whereby not only cytosolic components but also aberrant proteins are sequestered within double-membraned vesicles. Parkinson's disease (PD) is pathologically characterized by accumulation of phosphorylated α-synuclein in the neuronal cytoplasm and its accumulation occurs in the peripheral autonomic nervous system as well as the central nervous system. In the brains of patients with PD, abnormal autophagy is known to occur and be involved with neurodegeneration. To investigate abnormal autophagy in peripheral blood mononuclear cells (PBMC) in the patients with PD, we performed whole transcriptome analysis of PBMC obtained from 9 normal controls and 10 patients with PD.

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A transcriptome analysis study on mRNA and long non-coding RNAs in patients with Parkinson’s disease

Project description:Parkinson’s disease (PD) is the second most common neurodegenerative disorder, affecting ~2–3% of people over 65 years of age. Recent studies have revealed that the molecular pathogenesis of PD involves a series of pathways and neurobiological processes, such as protein degradation, mitochondrial dysfunction, oxidative stress, autophagy, calcium homeostasis, axonal transport, and neuroinflammation, all suggesting that both the onset and course of PD is a complex multilevel and systematic process. Accumulating evidence demonstrates that long non-coding RNAs (lncRNAs) affect the pathogenesis of several diseases, such as cancers, immunological diseases, and neurodegenerative disorders, including Alzheimer’s disease and PD. Next generation sequencing provides a high-throughput method for exploring the diverse polyadenylated RNA populations. This approach allows accurate identification and quantitation of mRNAs and other non-coding RNAs, such as lncRNAs. The present study explored mRNAs and lncRNAs expression by using the next generation sequencing analysis (NGS) and the quantitative real-time PCR (qRT-PCR) assay for the confirmation of the NGS results, followed by functional analysis of the results.

2023-01-16 | E-MTAB-11326 | biostudies-arrayexpress

Transcriptome profiling of peripheral blood mononuclear cell subsets

Project description:Transcriptome profiling was conducted on 2 replicate samples of total peripheral blood mononuclear cells (PBMC) and isolated PBMC subsets.

2020-04-14 | GSE101489 | GEO

Expression data from peripheral blood mononuclear cells in multiple sclerosis patients and controls

Project description:Multiple sclerosis (MS) is a neurodegenerative disease with a presumed autoimmune component. Expression profiling in immune cells can therefore be used in order to identify genes and pathways involved in MS pathogenesis. We conducted a genome-wide expression study in peripheral blood mononuclear cells (PBMC) from 12 MS patients and 15 controls in order to identify differentially expressed genes and pathways in MS.

2011-07-01 | GSE21942 | GEO

A Next-Generation Sequencing Study in a Cohort of Patients with Parkinson’s Disease

Project description:Background: Parkinson’s disease (PD) is a multisystem and multifactorial disorder. Therefore, the application of modern genetic techniques may assist in unraveling its complex pathophysiology. Methods: We conducted a clinical-demographic evaluation of 126 patients with PD, all of whom were Caucasian and of Sicilian ancestry. DNA was extracted from peripheral blood for each patient, followed by sequencing using a Next-Generation Sequencing system. This system was based on a custom gene panel comprising 162 genes. The sample underwent further filtering, taking into account allele frequencies of genetic variants, their presence in the Human Gene Mutation Database, and their association in the literature with PD or other movement/neurodegenerative disorders. Results: The largest number of variants was identified in the leucine-rich repeat kinase 2 (LRRK2) gene. However, variants in other genes, such as acid beta-glucosidase (GBA), DNA polymerase gamma, catalytic subunit (POLG), and parkin RBR E3 ubiquitin protein ligase (PRKN), were also discovered. Interestingly, some of these variants had not been previously associated with PD. Conclusions: Enhancing our understanding of the genetic basis of PD and identifying new variants possibly linked to the disease will contribute to improved diagnostic accuracy, therapeutic developments, and prognostic insights for affected individuals.

2024-10-14 | E-MTAB-13523 | biostudies-arrayexpress

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