biomedical and healthCAre Data Discovery Index Ecosystem
biomedical and healthCAre Data Discovery Index Ecosystem
| Title: | A novel tumor-associated myeloid cell population inhibits antigen-specific immune responses in cancer patients
|
| dateReleased: |
08-04-2016
|
| description: |
Tumor progression is associated with an immunosuppressive microenvironment that consists of several elements, such as regulatory T cells, type 2 macrophages and myeloid-derived suppressor cells. Here, we identify for the first time a BDCA1+CD14+ population of immunosuppressive cells that resides both in the blood and tumor of melanoma patients. We demonstrated that the presence of these cells in dendritic cell (DC)-based anti-tumor vaccines significantly suppresses CD4+ T cells in an antigen-specific manner. In an attempt to reveal the mechanism of this suppressive activity, we noticed that BDCA1+CD14+ cells express elevated levels of the check-point molecule PD-L1, which thereby hinders T cell proliferation. Importantly, although this suppressive BDCA1+CD14+ population expresses markers of both BDCA1+ DCs and monocytes, functional, transcriptome and proteome analyses clearly revealed that they comprise a unique population of cells that is exploited by tumors to evade immunity. Thus, targeting these cells may improve the efficacy of cancer immunotherapy. mRNA profiles of BDCA1+ DCs, BDCA1+CD14+ cells and monocytes, isolated from 3 healthy volunteers, were generated by deep RNA sequencing using HiSeq 2000 System (TruSeq SBS KIT-HS V3，Illumina)
|
| privacy: |
not applicable
|
| aggregation: |
instance of dataset
|
| ID: |
E-GEOD-75042
|
| refinement: |
raw
|
| alternateIdentifiers: |
75042
|
| keywords: |
functional genomics
|
| dateModified: |
08-05-2016
|
| availability: |
available
|
| types: |
gene expression
|
| name: |
Homo sapiens
|
| accessURL: | https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-75042/E-GEOD-75042.raw.1.zip |
| storedIn: |
ArrayExpress
|
| qualifier: |
gzip compressed
|
| format: |
TXT
|
| accessType: |
download
|
| authentication: |
none
|
| authorization: |
none
|
| accessURL: | https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-75042/E-GEOD-75042.processed.1.zip |
| storedIn: |
ArrayExpress
|
| qualifier: |
gzip compressed
|
| format: |
TXT
|
| accessType: |
download
|
| authentication: |
none
|
| authorization: |
none
|
| accessURL: | https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE75042 |
| storedIn: |
Gene Expression Omnibus
|
| qualifier: |
not compressed
|
| format: |
HTML
|
| accessType: |
landing page
|
| primary: |
true
|
| authentication: |
none
|
| authorization: |
none
|
| abbreviation: |
EBI
|
| homePage: | http://www.ebi.ac.uk/ |
| ID: |
SCR:004727
|
| name: |
European Bioinformatics Institute
|
| homePage: | https://www.ebi.ac.uk/arrayexpress/ |
| ID: |
SCR:002964
|
| name: |
ArrayExpress
|