Single cell RNA sequencing of spleen mesenchymal reticular cells
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA702590 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13735225_1.fastq.gz | Fastqsanger.gz | |||
| SRR13735225_2.fastq.gz | Fastqsanger.gz | |||
| SRR13735226_1.fastq.gz | Fastqsanger.gz | |||
| SRR13735226_2.fastq.gz | Fastqsanger.gz | |||
| SRR13735227_1.fastq.gz | Fastqsanger.gz |
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Project description:We report the single cell transcriptome of mouse splenic mesenchymal reticular cells obtained from Ccl19-cre x R26R-EYFP mice on a C57BL/6 background.
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Project description:We report the transcriptome of subsets of mouse splenic mesenchymal reticular cells and lymph node reticular cells obtained from healthy Ccl19-cre x R26R-EYFP mice on a C57BL/6 background. We also examine splenic reticular cells from these mice infected with lymphocytic choriomeningitis virus (LCMV) strain Armstrong (acute infection) or strain Clone 13 (chronic infection). Subsets of CD45- CD31- Ter119- reticular cells were analyzed including PDPN+ T zone reticular cells (TRC) and MAdCAM-1+ marginal reticular cells (MRC) from spleen and lymph nodes. Additionally from the spleen we analyzed PDPN+ CD140a- cells, PDPN+ EYFP- cells, and EYFP+ red pulp reticular cells (RPRC) in healthy mice. We analyzed TRC, MRC, PDPN+ EYFP- cells, and EYFP+ RPRC from mice infected with LCMV Armstrong or LCMV Clone-13 on day 8 or on day 30 after infection. Our study represents the first detailed analysis of splenic reticular cell transcriptomes in healthy and LCMV-infected mice, with biologic replicates, generated by RNA-sequencing. We find substantial differential gene expression across subsets of splenic and lymph node reticular cells. We reveal significant changes in gene expression induced after virus infection that differ markedly with disease.
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Project description:Splenic white pulp (WP) structures are underpinned by fibroblastic stromal cells (FSCs) to facilitate splenic compartmentalization and execute efficient immune responses. Although distinct WP FSCs exhibit various molecular traits, the origin and the hierarchical differentiation of different cell subsets are not characterized. Here we showed, the organization of splenic WP and the differentiation of WP FSCs were governed by lymphotoxin beta receptor (LTβR) signaling pathway. Cell fate mapping analysis revealed that different WP fibroblastic stromal cells descend from a common perivascular LTβR-sensitive mesenchymal lymphoid organizer cells (mLTo) at prenatal stage. Moreover, embryonic mLTo cells required LTβR signaling to give rise to different WP stromal cell subsets, while the proliferation of these cells was devoid of LTβR signaling but followed the development of WP during ontogeny. Moreover, cell fate mapping from different time point indicated a consecutive commitment of mLTo cells initiated from the proximal region around the splenic artery. RNAseq and differentiation trajectory analysis of distinct FSCs showed that Ltbr-deficient cells and perivascular reticular cells (PRCs) from adult spleen exhibited a progenitor phenotype and revealed a closer hierarchical lineage with embryonic mLTo cells. Taken together, our results unveil that embryonic mLTo cells residing in the perivascular niches can give rise to different FSC populations in a LTβR-dependent manner during development.
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Project description:Splenic white pulp (WP) structures are underpinned by fibroblastic stromal cells (FSCs) to facilitate splenic compartmentalization and execute efficient immune responses. Although distinct WP FSCs exhibit various molecular traits, the origin and the hierarchical differentiation of different cell subsets are not characterized. Here we showed, the organization of splenic WP and the differentiation of WP FSCs were governed by lymphotoxin beta receptor (LTβR) signaling pathway. Cell fate mapping analysis revealed that different WP fibroblastic stromal cells descend from a common perivascular LTβR-sensitive mesenchymal lymphoid organizer cells (mLTo) at prenatal stage. Moreover, embryonic mLTo cells required LTβR signaling to give rise to different WP stromal cell subsets, while the proliferation of these cells was devoid of LTβR signaling but followed the development of WP during ontogeny. Moreover, cell fate mapping from different time point indicated a consecutive commitment of mLTo cells initiated from the proximal region around the splenic artery. RNAseq and differentiation trajectory analysis of distinct FSCs showed that Ltbr-deficient cells and perivascular reticular cells (PRCs) from adult spleen exhibited a progenitor phenotype and revealed a closer hierarchical lineage with embryonic mLTo cells. Taken together, our results unveil that embryonic mLTo cells residing in the perivascular niches can give rise to different FSC populations in a LTβR-dependent manner during development.
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Project description:Fibroblastic reticular cells (FRCs) actively support secondary lymphoid organ (SLO) architecture. They regulate innate and adaptive immunity by compartmentalizing immune cells in specialized niches, and tightly interacting with them. The phenotypic and functional diversity of FRCs in human SLOs remains largely uncharacterized. We performed a comprehensive profiling of FRCs by single-cell RNA sequencing on human tonsils and lymph nodes. We provide the first complete description of the tonsillar CD45-negative compartment. We identified and validated in tonsil, a population of follicular dendritic cells restricted to the mantle zone and discovered two CCL21-negative FRC subsets intermingling with T-cell zone reticular cells in the extrafollicular space. We also identified podoplanin-positive epithelial cells as a potential plasma cell (PC) niche. We found two levels of FRC-associated diversity: i) tissue-specific subsets; ii) shared subsets with tissue-specific gene signatures. These findings shed new light on the role of FRCs in supporting SLO-specific immune responses.
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Project description:Single-cell RNA-sequencing of spleen memory CD4+ T cells
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Project description:Splenic white pulp (WP) structures are underpinned by fibroblastic stromal cells (FSCs) to facilitate splenic compartmentalization and execute efficient immune responses. Although distinct WP FSCs exhibit various molecular traits, the origin and the hierarchical differentiation of different cell subsets are not characterized. Here we showed, the organization of splenic WP and the differentiation of WP FSCs were governed by lymphotoxin beta receptor (LTβR) signaling pathway. Cell fate mapping analysis revealed that different WP fibroblastic stromal cells descend from a common perivascular LTβR-sensitive mesenchymal lymphoid organizer cells (mLTo) at prenatal stage. Moreover, embryonic mLTo cells required LTβR signaling to give rise to different WP stromal cell subsets, while the proliferation of these cells was devoid of LTβR signaling but followed the development of WP during ontogeny. Moreover, cell fate mapping from different time point indicated a consecutive commitment of mLTo cells initiated from the proximal region around the splenic artery. RNAseq and differentiation trajectory analysis of distinct FSCs showed that Ltbr-deficient cells and perivascular reticular cells (PRCs) from adult spleen exhibited a progenitor phenotype and revealed a closer hierarchical lineage with embryonic mLTo cells. Taken together, our results unveil that embryonic mLTo cells residing in the perivascular niches can give rise to different FSC populations in a LTβR-dependent manner during development.
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