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| Status |
Public on Jan 07, 2012 |
| Title |
IRF-8 extinguishes neutrophil production and promotes dendritic cell lineage commitment in both myeloid and lymphoid progenitors (Illumina). |
| Organism |
Mus musculus |
| Experiment type |
Expression profiling by array
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| Summary |
While most blood lineages are assumed to mature through a single cellular and developmental route downstream of hematopoietic stem cells (HSCs), dendritic cells (DCs) can be derived from both myeloid and lymphoid progenitors in vivo. To determine how distinct progenitors can generate similar downstream lineages, we examined the transcriptional changes that accompany loss of in vivo myeloid potential as common myeloid progenitors (CMPs) differentiate into common dendritic cell progenitors (CDPs), and as lymphoid-primed multipotent progenitors (LMPPs) differentiate into all lymphoid progenitors (ALPs). Microarray studies revealed that Interferon regulatory factor 8 (IRF-8) expression increased during each of these transitions. Competitive reconstitutions using Irf8-/- bone marrow demonstrated cell-intrinsic defects in the formation of CDPs and all splenic dendritic cell subsets. Irf8-/- CMPs and, unexpectedly, Irf8-/- ALPs produced more neutrophils in vivo than their wild type counterparts at the expense of DCs. Retroviral expression of IRF-8 in multiple progenitors led to reduced neutrophil production and increased numbers of DCs, even in the granulocyte-macrophage progenitor (GMP), which does not normally possess conventional DC potential. These data suggest that IRF-8 represses a neutrophil module of development and promotes convergent DC development from multiple lymphoid and myeloid progenitors autonomously of cellular context.
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| Overall design |
CMP (Lineage-c-kithiSca-1-CD11c- CD34+Flk2+CD16/32-CD115- ) or ALP (Lin-Ly6D-B220-c-kit+Flk2+IL7R alpha+) were double sorted from the bone marrow of wild type C57BL/6 mice. RNA was extracted from 2,000-15,000 sorted cells using Qiagen RNeasy Mini kit, amplified using Nugen pico-amplification kit , and 750 ng of aRNA was hybridized to Illumina MouseRef-8 v 2.0 bead chips
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| Contributor(s) |
Becker AM, Michael DG, Satpathy AT, Sciammas R, Singh H, Bhattacharya D |
| Citation(s) |
22238324 |
| |
| Submission date |
Jan 06, 2012 |
| Last update date |
Aug 02, 2013 |
| Contact name |
Amy M. Becker |
| E-mail(s) |
abecker@path.wustl.edu
|
| Phone |
314-362-8782
|
| Fax |
314-362-8888
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| Organization name |
Washington University School of Medicine
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| Department |
Pathology and Immunology
|
| Lab |
Deepta Bhattacharya
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| Street address |
660 S. Euclide Ave.
|
| City |
St. Louis |
| State/province |
MO |
| ZIP/Postal code |
63110 |
| Country |
USA |
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| Platforms (1) |
| GPL15097 |
Illumina MouseRef-8 v2.0 expression beadchip (ILMN_GENE) |
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| Samples (8)
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| This SubSeries is part of SuperSeries: |
| GSE34917 |
IRF-8 extinguishes neutrophil production and promotes dendritic cell lineage commitment in both myeloid and lymphoid progenitors |
|
| Relations |
| BioProject |
PRJNA156249 |
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