Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Early-to-mid stage idiopathic Parkinson’s disease shows enhanced cytotoxicity and differentiation in CD8 T-cells in females

ABSTRACT: Neuroinflammation in the brain contributes to the pathogenesis of Parkinson’s disease (PD), but the potential dysregulation of peripheral immunity has not been systematically investigated for idiopathic PD (iPD). Here we showed an elevated peripheral cytotoxic immune milieu, with more terminally-differentiated effector memory (TEMRA) CD8 T, CD8+ NKT cells and circulating cytotoxic molecules in fresh blood of early-to-mid iPD, especially in females, after analyzing >700 innate and adaptive features. This profile, also reflected by fewer CD8+FOXP3+ regulatory T cells, was confirmed in another subcohort. Co-expression between cytotoxic molecules was selectively enhanced in CD8 TEMRA and effector memory (TEM) cells. Single-cell RNA-sequencing analysis demonstrated the accelerated CD8 differentiation within CD8 compartments, enhanced cytotoxic pathways in CD8 TEMRA and TEM cells, while CD8 central-memory (TCM) and naïve cells were already more-active and transcriptionally-reprogrammed. Our work provides a comprehensive map of dysregulated peripheral immunity in iPD, proposing previously-unrecognized candidates for early diagnosis and treatments.

ORGANISM(S): Homo sapiens

PROVIDER: GSE237254 | GEO | 2023/10/13

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Transcription profiling of human CD8 naive (TN), central memory (TCM), effector memory (TEM), and effector memory RA (TEMRA) T cells

Project description:Memory T cells are heterogeneous in terms of their phenotype and functional properties. We investigated the molecular profiles of human CD8 naïve (TN), central memory (TCM), effector memory (TEM), and effector memory RA (TEMRA) T cells using gene expression microarrays and phospho-protein-specific intracellular flow cytometry. We demonstrate that TCM have a gene expression and cytokine signaling signature that lies between that of TN and TEM or TEMRA cells, whereas TEM and TEMRA are closely related. Our data define the molecular basis for the different functional properties of central and effector memory subsets. We show that TEM and TEMRA cells strongly express genes with known importance in CD8 T cell effector function. In contrast, TCM are characterized by high basal and cytokine-induced STAT5 phosphorylation, reflecting their capacity for self-renewal. Altogether, our results distinguish TCM and TEM/TEMRA at the molecular level and are consistent with the concept that TCM represent memory stem cells.

2005-01-01 | E-TABM-40 | biostudies-arrayexpress

Transcription profiling by array of CD8 T cells from healthy individuals that express high levals of Programmed Death-1 protein

Project description:T cell dysfunction is an important feature of many chronic viral infections. In particular, it was shown that PD-1 regulates T cell dysfunction during chronic LCMV infection in mice and PD-1 high cells exhibit an intense exhausted gene signature. These findings were extended to human chronic infections such as HIV, HCV and HBV. However, it is not known if PD-1 high cells of healthy humans have the traits of exhausted cells. In this study, we provide a comprehensive description of phenotype, function and gene expression profiles of PD-1 high versus PD-1 low CD8 T cells in the peripheral blood of healthy human adults as following: 1) The percentage of naive and memory CD8 T cells varied widely in the peripheral blood cells of healthy humans and PD-1 was expressed by the memory CD8 T cells. 2) PD-1 high CD8 T cells in healthy humans did not significantly correlated with the PD-1 high exhausted gene signature of HIV specific human CD8 T cells or chronic LCMV specific CD8 T cells from mice. 3) PD-1 expression did not directly affect the ability of CD8 T cells to secrete cytokines in healthy adults. 4) PD-1 was expressed by the effector memory (TEM) compared to ‘terminally differentiated effector’ (TEMRA) CD8 T cells. 5) Finally, an interesting inverse relationship between CD45RA and PD-1 expression was observed. We used highly purified PD-1 high and PD-1 low from six healthy adult individuals and naive CD8 T cell populations from four of those individuals for gene expression studies

2011-01-11 | E-GEOD-26495 | biostudies-arrayexpress

Phenotype, Function and Gene Expression Profiles of PD-1 high CD8 T cells in Healthy Human Adults

2011-01-11 | GSE26495 | GEO

Transcriptome analysis of human memory T cell subsets from blood before and after ex-vivo CD3/CD28 stimulation

Project description:Naive, central memory (TCM), effector memory (TEM), and terminally differentiated effector memory RA (TEMRA, CD8+ only) T cell subsets were FACS separated from PBMC samples of four human donors using CCR7 and CD45RA as distinguishing cell surface markers. Samples were split and either immediately isolated, or incubated for 42-48 hours with anti-CD3/CD28 beads for ex-vivo stimulation.

2023-03-01 | GSE186463 | GEO

Chromatin accessibility of human memory T cell subsets from blood before and after ex-vivo CD3/CD28 stimulation

2023-03-01 | GSE186462 | GEO

Expression of miRNAs in human ex-vivo CD8+ T cell subsets

Project description:The aim was to assess miRNA expression in 3 human ex-vivo CD8+ T cell subsets which span from antigen inexperienced cells (NaM-CM-/ve) to early memory cells (central memory, Tcm) and later stage memory cells (effector memory, Tem) CD8+ T cells were sorted on a FACS Aria II machine. N = naM-CM-/ve = CD8+, CCR7+, CD45RA+, CD45RO-, Tcm = central memory = CD8+, CCR7+, CD45RA-, CD45RO-,Tem= effector memory = CD8+, CCR7-, CD45RA-, CD45RO+ PBMC were isolated from 3 healthy human donors and sorted by FACS into 3 CD8+ T cell subsets. Total RNA was purified using the miRVANA kit (Ambion)

2014-10-24 | E-GEOD-54867 | biostudies-arrayexpress

Clonally expanded CD8 T cells patrol Alzheimer's cerebrospinal fluid [TCR-seq]

Project description:Alzheimer’s disease (AD) is an age-related neurodegenerative disorder in which neuroinflammation plays a critical function. Recurring viral infections and loss of immune competence increase risk for developing AD, yet the cellular and molecular mechanisms driving these immune changes are unknown. Here we performed mass cytometry of peripheral blood mononuclear cells and detected an immunologic signature of AD characterized by increased numbers of CD8+ T effector memory CD45RA+ (TEMRA) cells. CD8+ TEMRA cells were negatively associated with cognition and single cell RNA sequencing revealed their cytotoxic effector function. Strikingly, we discovered identical, shared T cell receptors (TCRs) of clonally expanded CD8+ TEMRA cells in cerebrospinal fluid (CSF) of three AD patients. Deep TCR sequencing, machine learning, and peptide screens identified the HLA-B*08:01-restricted Epstein-Barr virus trans-activator protein BZLF1 as the cognate antigen of a novel AD CSF TCR . These results provide the first evidence of clonal, antigen-specific T cells patrolling the intrathecal space of brains affected by age-related neurodegeneration

2019-11-04 | GSE135051 | GEO

Clonally expanded CD8 T cells patrol Alzheimer's cerebrospinal fluid [CSF]

2019-11-04 | GSE134577 | GEO

Clonally expanded CD8 T cells patrol Alzheimer's cerebrospinal fluid [TEMRA]

2019-11-04 | GSE134576 | GEO

Expression of miRNAs in human ex-vivo CD8+ T cell subsets

Project description:The aim was to assess miRNA expression in 3 human ex-vivo CD8+ T cell subsets which span from antigen inexperienced cells (Naïve) to early memory cells (central memory, Tcm) and later stage memory cells (effector memory, Tem) CD8+ T cells were sorted on a FACS Aria II machine. N = naïve = CD8+, CCR7+, CD45RA+, CD45RO-, Tcm = central memory = CD8+, CCR7+, CD45RA-, CD45RO-,Tem= effector memory = CD8+, CCR7-, CD45RA-, CD45RO+

2014-10-24 | GSE54867 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data