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SRP095331
Danio rerio
4 Downloadable Samples
IlluminaHiSeq2500
Description
The microenvironment is an important regulator of hematopoietic stem and progenitor cell (HSPC) biology. Interactions between the niche and stem cells have been difficult to track, but recent advances marking fluorescent HSPCs have allowed exquisite visualization in the caudal hematopoietic tissue (CHT) of the developing zebrafish. Sinusoidal endothelial cells interact closely with HSPCs as they colonize this niche. Here we show that the chemokine cxcl8 and its receptor, cxcr1, are abundantly expressed by zebrafish endothelial cells and we identify cxcl8/cxcr1 signaling as a positive regulator of HSPC colonization using genetic gain- and loss-of-function techniques. Single-cell tracking experiments demonstrated that this effect is due to an increase in HSPC “cuddling” by endothelial cells, thereby increasing CHT residency time and allowing more HSPC cell divisions to occur. Enhanced cxcl8/cxcr1 signaling was associated with an increase in the volume of the CHT and induction of cxcl12a expression, favoring HSPC colonization. Finally, using parabiotic zebrafish, we show that cxcr1 acts stem cell non-autonomously to improve the efficiency of donor HSPC engraftment. This work identifies a mechanism by which the hematopoietic niche remodels to promote HSPC engraftment and suggests that cxcl8/cxcr1 signaling is a potential therapeutic target in patients undergoing hematopoietic stem cell transplantation. Overall design: Kdrl:mcherry and kdrl:mcherry;kdrl:cxcr1 zebrafish were dissociated and endothelial cells purified by FACS. RNA-seq libraries were prepared from endothelial cells purified from two independent clutches of fish (four libraries total).
Publication Title
CXCR1 remodels the vascular niche to promote hematopoietic stem and progenitor cell engraftment.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 2 Downloadable Samples
- Illumina HiSeq 2500
Description
The microenvironment is an important regulator of hematopoietic stem and progenitor cell (HSPC) biology. Interactions between the niche and stem cells have been difficult to track, but recent advances marking fluorescent HSPCs have allowed exquisite visualization in the caudal hematopoietic tissue (CHT) of the developing zebrafish. Sinusoidal endothelial cells interact closely with HSPCs as they colonize this niche. Here we show that the chemokine cxcl8 and its receptor, cxcr1, are abundantly expressed by zebrafish endothelial cells and we identify cxcl8/cxcr1 signaling as a positive regulator of HSPC colonization using genetic gain- and loss-of-function techniques. Single-cell tracking experiments demonstrated that this effect is due to an increase in HSPC “cuddling” by endothelial cells, thereby increasing CHT residency time and allowing more HSPC cell divisions to occur. Enhanced cxcl8/cxcr1 signaling was associated with an increase in the volume of the CHT and induction of cxcl12a expression, favoring HSPC colonization. Finally, using parabiotic zebrafish, we show that cxcr1 acts stem cell non-autonomously to improve the efficiency of donor HSPC engraftment. This work identifies a mechanism by which the hematopoietic niche remodels to promote HSPC engraftment and suggests that cxcl8/cxcr1 signaling is a potential therapeutic target in patients undergoing hematopoietic stem cell transplantation. Overall design: Primary human endothelial cells were serum starved for 12 hours followed by treatment with recombinant human CXCL8 or vehicle control for 6 hours. Total RNA was collected from biological duplicates and RNA-seq libraries were prepared.
Publication Title
CXCR1 remodels the vascular niche to promote hematopoietic stem and progenitor cell engraftment.
Sample Metadata Fields
Specimen part, Subject
View Samples- Mus musculus
- 7 Downloadable Samples
Affymetrix Mouse Gene 2.0 ST Array (mogene20st)
Description
Intranasal (IN) immunization induces different genotype expression in CD8 memory T cells compared to the CD8 memory T cells induced by intramuscular (IM) immunization. We used microarrays to detail the global program of gene expression underlying the differential induction after IN or IM immunization.
Publication Title
Induction of resident memory T cells enhances the efficacy of cancer vaccine.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Homo sapiens
- 277 Downloadable Samples
- Illumina HiSeq 2000
Description
mRNA expression from adenomas of patients with Lynch Syndrome and Familial Adenomatous Polyposis Overall design: 24 adenoma samples analyzed
Publication Title
Immune Profiling of Premalignant Lesions in Patients With Lynch Syndrome.
Sample Metadata Fields
Specimen part, Subject
View Samples- Mus musculus
- 18 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
Balb/c donor hearts were transplanted into C57/BL6 recipients as previously described (Corry et al, 1973). Recipient mice were treated with 250g anti-CD40L mAb for tolerance induction on days 0, 2, and 4 as previously described (Jiang et al., 2011) or left untreated. On day 5 after transplantation graft infiltrating myeloid subsets were isolated using fluorescence activated cell sorting (FACS). Affymetrix Mouse Gene arrays were run in triplicate with the samples of interest. Raw CEL file data from Affymetrix Expression Console were background corrected, normalized, and summarized using RMA.
Publication Title
DC-SIGN(+) Macrophages Control the Induction of Transplantation Tolerance.
Sample Metadata Fields
Treatment
View Samples