Maturation of Long Lived Plasma cells
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ABSTRACT:
PROVIDER: PRJNA913594 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:To analyze global gene transcriptional changes and BCR clonal differences associated with long lived plasma cell specification, we sorted LLPCs and bulk PCs using Blimp1-ERT2-cre rosa26-LSLYFP expressing mice and analyzed them using bulk RNAsequencing
2024-02-22 | GSE221251 | GEO
Project description:Gene expression profiling of B-cells from a model differentiation series: from Naïve B-cells, through a proliferative plasmablast stage to long-lived antibody secreting plasma cells. B-cells were isolated from the peripheral blood of three adult donors and differentiated in vitro (see individual samples for culture conditions)
2012-10-18 | E-GEOD-41208 | biostudies-arrayexpress
Project description:Gene expression profiling of B-cells from a model differentiation series: from Naïve B-cells, through a proliferative plasmablast stage to long-lived antibody secreting plasma cells.
2012-10-18 | GSE41208 | GEO
Project description:Gene expression profiling of B-cells from a model differentiation series: from Naïve B-cells, through a proliferative plasmablast stage to long-lived antibody secreting plasma cells.
2023-12-31 | GSE222862 | GEO
Project description:In vitro generation of long-lived human Plasma Cells II
| PRJNA923678 | ENA
Project description:Previous data have suggested that B-cell–depletion therapy may induce the settlement of autoreactive long-lived plasma cells (LLPCs) in the spleen of patients with autoimmune cytopenia. To investigate this process, we used the AID-CreERT2-EYFP mouse model to follow PCs engaged in an immune response. Multiplex-PCR at the single-cell level revealed that only a small fraction of splenic PCs had a long-lived signature, whereas PCs present after anti-CD20 antibody treatment appeared more mature, similar to bone-marrow PCs. It suggested that, in addition to a process of selection, a maturation induced upon B-cell depletion drove PCs toward a long-lived program. We showed that BAFF and CD4+ T cells play a major role in PC survival niche, because combining anti-CD20 with anti-BAFF or anti-CD4 antibody greatly reduce the number of splenic PCs. Similar results were obtained in the lupus-prone NZB/W model. These different contributions of soluble and cellular components of the PC niche in the spleen demonstrate that the LLPC expression profile is not cell-intrinsic but largely depends on signals provided by the splenic microenvironment, implying that interfering with these components at the time of B cell depletion might improve the response rate in autoimmune cytopenia.
2018-02-19 | E-MTAB-6449 | biostudies-arrayexpress
Project description:Summary: Long-lived IgE plasma cells reside in the bone marrow of allergic mice and atopic humans, confer IgE serological memory and produce allergen-specific IgE that can drive anaphylaxis. Abstract: Immunoglobulin E (IgE) plays an important role in allergic diseases. Nevertheless, the source of IgE serological memory remains controversial. We re-examined the mechanism of serological memory in allergy using a dual-reporter system to track IgE plasma cells (PCs) in mice. Short-term allergen exposure resulted in the generation of IgE plasma cells that resided mainly in secondarylymphoid organs and produced IgE that was unable to degranulate mast cells. In contrast, chronic allergen exposure led to the generation of long-lived IgE plasma cells that were primarily derived from sequential class switching of IgG1, accumulated in the bone marrow (BM) and produced IgE capable of inducing anaphylaxis. Most importantly, IgE plasma cells were found in the BM of human allergic, but not non-allergic donors, and allergen-specific IgE produced by these cells was able to induce mast cell degranulation when transferred to mice. These data demonstrate that longlived IgE BMPCs arise during chronic allergen exposure and establish serological memory in both mice and humans.
2019-11-16 | GSE140435 | GEO
Project description:Due to their unique longevity and capacity to secrete high levels of protein, plasma B cells play have the potential to be used as a cell therapy for protein replacement. Here, we show that ex vivo engineered human plasma cells exhibited transcriptional features of long-lived plasma cells.
2022-09-15 | GSE211984 | GEO
Project description:We report that there are differences in V gene usage in memory B cells and long-lived plasma cells after oral immunization. The hapten NP was conjugated to cholera toxin (CT) to create NP-CT, an antigen that is highly immunogenic after oral immunization. The NP hapten induces immune responses dominated by the 1-72 (VH186.2) heavy chain V region. The relationship between NP binding IgA antibody genes from memory B cells from spleen, MLN and Peyer´s patches and long-lived plasma cells from lamina propria and bone marrow that persisted 6-12 months after an oral immunization in three C57BL/6 mice with NP-CT was investigated. Extensive clonal overlap im clones was observed between long-lived memory cells from lamina propria and bone marrow, but very limited overlap was found between memory cells and plasma cells. The data suggest that memory and plasma cells formed through temporarily or anatomically separate processes.
2016-08-18 | GSE84698 | GEO
Project description:Splenic long-lived plasma cells (PCs) are abnormally numerous and deleterious in systemic autoimmune diseases, yet how they accumulate remains poorly understood. We demonstrate here that a pathological role of spleen-derived CD11b+Gr-1+ myeloid cells (SPMCs) underpins the accumulation of splenic long-lived PCs in a lupus-prone model. SPMCs were a mixture of granulocytic and monocytic myeloid-derived suppressor cells (MDSCs) that were expanded and acquired proinflammatory phenotypes in situ during lupus progression. By promoting the development of IFN--secreting and follicular helper T cells, SPMCs licensed CD4+ T cells to be pathologic activators of SPMCs and PCs. SPMCs also directly promoted the survival of PCs by providing B-cell activating factor of the TNF family. The frequency of SPMCs correlated with that of splenic long-lived PCs. Depletion of CD11b+Gr-1+ cells reduced autoantibody production. Thus, our findings suggest that SPMCs expanded in situ establish a positive feedback loop with CD4+ T cells, leading to accumulation of long-lived PCs which exacerbate lupus autoimmunity.
2021-02-09 | GSE161850 | GEO