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| Status |
Public on May 24, 2010 |
| Title |
Transcriptome of inflammatory myeloid DCs in psoriasis |
| Organism |
Homo sapiens |
| Experiment type |
Expression profiling by array
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| Summary |
Background: Previous work has identified CD11c+CD1c- dendritic cells (DCs) as the major ”inflammatory” dermal DC population in psoriasis vulgaris and CD1c+ DCs as the “resident” cutaneous DC population. Objective: To further define molecular differences between these two myeloid dermal DC populations. Methods: Inflammatory and resident DCs were single-cell sorted from psoriasis lesional skin biopsies, and gene array expression profiling was performed. Results were confirmed with RT-PCR, flow cytometry, immunohistochemistry, and double label immunofluorescence. Pooled human keratinocytes were cultured for functional studies. Results: TNF-related apoptosis-inducing ligand (TRAIL), Toll-like receptors (TLRs) 1 and 2, S100A12/EN-RAGE, CD32, and many other inflammatory products were selectively expressed in inflammatory DCs than in resident DCs. Flow cytometry and immunofluorescence confirmed higher protein expression on CD1c- versus CD1c+ DCs. TRAIL receptor, death receptor 4 (DR4), was expressed on basal keratinocytes and blood vessels, and in vitro culture of keratinocytes with rh-TRAIL induced CCL20 leukocyte chemokine. Conclusion: CD11c+CD1c- inflammatory DCs in psoriatic lesional skin express a wide range of inflammatory molecules compared to skin resident CD1c+ DCs. Some molecules made by inflammatory DCs, including TRAIL, could have direct effects on keratinocytes or other skin cell types to promote disease pathogenesis.
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| Overall design |
Shave biopsies were cultured overnight in dispase to remove the epidermis. Dermis was cultured for 36-48 hours to obtain dermal single cell suspensions. These cells were stained with HLA-DR, CD11c, BDCA-1 (DCs) and FACS-sorted into HLA-DR+11c+BDCA-1+, HLA-DR+11c+BDCA-1- populations into Trizol. RNA was extracted and processed for microarray. 2 dependent groups.
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| Contributor(s) |
Suárez-Fariñas M, Zaba LC, Krueger JG |
| Citation(s) |
20471070 |
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| Submission date |
Feb 10, 2010 |
| Last update date |
Dec 06, 2018 |
| Contact name |
Mayte Suarez-Farinas |
| E-mail(s) |
mayte.suarezfarinas@mssm.edu
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| Organization name |
Mount SinaiSchool of Medicine
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| Street address |
1425 Madison Ave, L2-70C, Box 1077,
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| City |
New York |
| State/province |
NY |
| ZIP/Postal code |
10075 |
| Country |
USA |
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| Platforms (1) |
| GPL571 |
[HG-U133A_2] Affymetrix Human Genome U133A 2.0 Array |
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| Samples (7)
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| Relations |
| BioProject |
PRJNA124231 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE20264_RAW.tar |
23.3 Mb |
(http)(custom) |
TAR (of CEL) |
| Processed data included within Sample table |
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