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Trancriptional comparison of Zbtb32-deficient and -sufficient NP-specific memory B cells at day 7 of recall response [memory B cells]

ABSTRACT: Memory B cell responses are more rapid and of greater magnitude than are primary antibody responses. The mechanisms by which these secondary responses are eventually attenuated remain unknown. We demonstrate that the transcription factor ZBTB32 limits the rapidity and duration of antibody recall responses. ZBTB32 is highly expressed by mouse and human memory B cells, but not by their naïve counterparts. Zbtb32-/- mice mount normal primary antibody responses to T-dependent antigens. However, Zbtb32-/- memory B cell-mediated recall responses occur more rapidly and persist longer than do control responses. Microarray analyses demonstrate that Zbtb32-/- secondary bone marrow plasma cells display elevated expression of genes that promote cell cycle progression and mitochondrial function relative to wild-type controls. BrdU labeling and adoptive transfer experiments confirm more rapid production and a cell-intrinsic survival advantage of Zbtb32-/- secondary plasma cells relative to wild-type counterparts. ZBTB32 is therefore a novel negative regulator of antibody recall responses.

ORGANISM(S): Mus musculus

PROVIDER: GSE83190 | GEO | 2016/06/10

SECONDARY ACCESSION(S): PRJNA325336

REPOSITORIES: GEO

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Trancriptional comparison of Zbtb32-deficient and -sufficient polyclonal resting memory B cells

Project description:Memory B cell responses are more rapid and of greater magnitude than are primary antibody responses. The mechanisms by which these secondary responses are eventually attenuated remain unknown. We demonstrate that the transcription factor ZBTB32 limits the rapidity and duration of antibody recall responses. ZBTB32 is highly expressed by mouse and human memory B cells, but not by their naÃ¯ve counterparts. Zbtb32-/- mice mount normal primary antibody responses to T-dependent antigens. However, Zbtb32-/- memory B cell-mediated recall responses occur more rapidly and persist longer than do control responses. Microarray analyses demonstrate that Zbtb32-/- secondary bone marrow plasma cells display elevated expression of genes that promote cell cycle progression and mitochondrial function relative to wild-type controls. BrdU labeling and adoptive transfer experiments confirm more rapid production and a cell-intrinsic survival advantage of Zbtb32-/- secondary plasma cells relative to wild-type counterparts. ZBTB32 is therefore a novel negative regulator of antibody recall responses. Wild type and Zbtb32-/- resting polyclonal splenic memory B cells were purified by fluorescence activated cell sorting, RNA was extracted, and used for Affymetrix microarray analysis. 5 biological replicates of wild type and Zbtb32-/- cells were included for each cell type.

2016-06-10 | E-GEOD-83191 | biostudies-arrayexpress

Trancriptional comparison of Zbtb32-deficient and -sufficient polyclonal resting memory B cells

Project description:Memory B cell responses are more rapid and of greater magnitude than are primary antibody responses. The mechanisms by which these secondary responses are eventually attenuated remain unknown. We demonstrate that the transcription factor ZBTB32 limits the rapidity and duration of antibody recall responses. ZBTB32 is highly expressed by mouse and human memory B cells, but not by their naïve counterparts. Zbtb32-/- mice mount normal primary antibody responses to T-dependent antigens. However, Zbtb32-/- memory B cell-mediated recall responses occur more rapidly and persist longer than do control responses. Microarray analyses demonstrate that Zbtb32-/- secondary bone marrow plasma cells display elevated expression of genes that promote cell cycle progression and mitochondrial function relative to wild-type controls. BrdU labeling and adoptive transfer experiments confirm more rapid production and a cell-intrinsic survival advantage of Zbtb32-/- secondary plasma cells relative to wild-type counterparts. ZBTB32 is therefore a novel negative regulator of antibody recall responses.

2016-06-10 | GSE83191 | GEO

Trancriptional comparison of Zbtb32-deficient and -sufficient NP-specific memory B cells at day 7 of recall response [memory B cells]

Project description:Memory B cell responses are more rapid and of greater magnitude than are primary antibody responses. The mechanisms by which these secondary responses are eventually attenuated remain unknown. We demonstrate that the transcription factor ZBTB32 limits the rapidity and duration of antibody recall responses. ZBTB32 is highly expressed by mouse and human memory B cells, but not by their naÃ¯ve counterparts. Zbtb32-/- mice mount normal primary antibody responses to T-dependent antigens. However, Zbtb32-/- memory B cell-mediated recall responses occur more rapidly and persist longer than do control responses. Microarray analyses demonstrate that Zbtb32-/- secondary bone marrow plasma cells display elevated expression of genes that promote cell cycle progression and mitochondrial function relative to wild-type controls. BrdU labeling and adoptive transfer experiments confirm more rapid production and a cell-intrinsic survival advantage of Zbtb32-/- secondary plasma cells relative to wild-type counterparts. ZBTB32 is therefore a novel negative regulator of antibody recall responses. CD45.2 wild type and Zbtb32-/- splenocytes from NP-CGG-immune donors were transferred into CD45.1 recipients and challenged with NP-CGG. CD45.2 donor NP-specific memory B cells were isolated from the spleen 7 days later. 5-6 biological replicates of each genotype were performed.

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Trancriptional comparison of Zbtb32-deficient and -sufficient NP-specific memory B cells at day 7 of recall response [BMPC]

Project description:Memory B cell responses are more rapid and of greater magnitude than are primary antibody responses. The mechanisms by which these secondary responses are eventually attenuated remain unknown. We demonstrate that the transcription factor ZBTB32 limits the rapidity and duration of antibody recall responses. ZBTB32 is highly expressed by mouse and human memory B cells, but not by their naïve counterparts. Zbtb32-/- mice mount normal primary antibody responses to T-dependent antigens. However, Zbtb32-/- memory B cell-mediated recall responses occur more rapidly and persist longer than do control responses. Microarray analyses demonstrate that Zbtb32-/- secondary bone marrow plasma cells display elevated expression of genes that promote cell cycle progression and mitochondrial function relative to wild-type controls. BrdU labeling and adoptive transfer experiments confirm more rapid production and a cell-intrinsic survival advantage of Zbtb32-/- secondary plasma cells relative to wild-type counterparts. ZBTB32 is therefore a novel negative regulator of antibody recall responses.

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Trancriptional comparison of Zbtb32-deficient and -sufficient NP-specific memory B cells at day 7 of recall response [BMPC]

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2016-06-10 | E-GEOD-83193 | biostudies-arrayexpress

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Establishment, Maintenance and Recall of Inflammatory Memory

Project description:Known for nearly a century, but through mechanisms that remain elusive, cells retain a memory of inflammation that equips them to react quickly and broadly to diverse secondary stimuli. Using mouse epidermal stem cells as a model, we elucidate how cells establish, maintain and recall inflammatory memory. Specifically, we landscape and functionally interrogate temporal, dynamic changes to chromatin accessibility, histone modifications and transcription factor binding that occur during inflammation, post-resolution and in memory recall following injury. We unearth an essential, unifying role for the general stress-responsive transcription factor FOS, which partners with JUN and cooperates with stimulus-specific STAT3 to establish memory; JUN then remains with other homeostatic factors on memory domains, facilitating rapid FOS re-recruitment and gene re-activation upon diverse secondary challenges. Extending our findings, we offer a comprehensive, potentially universal mechanism behind inflammatory memory and less discriminate recall, phenomena with profound implications for tissue fitness in health and disease.

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Expression data from circulating and lung tissue resident memory CD4 T cell responding towards infuenza A virus infection

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ZBTB32 performs crosstalk with the glucocorticoid receptor and is crucial in glucocorticoid responses to starvation

Project description:The hypothalamic-pituitary-adrenal (HPA) axis forms a complex neuroendocrine system that interacts directly via feedforward and feedback reactions to regulate the body’s response to stress such as starvation. In contrast with the glucocorticoid receptor (GR), ZBTB32 (zinc finger and BTB domain containing 32) is a transcription factor with very poorly described functional relevance in physiology. We investigated the importance of ZBTB32 on the HPA axis functioning and found that it is essential for the production of glucocorticoids (GCs) in response to starvation, because ZBTB32-/- mice fail to increase the GC production during prolonged absence of nutrients. In terms of mechanism, GR-mediated upregulation of adrenal Scarb1 gene expression was absent in ZBTB32-/- mice, implicating defective cholesterol import as the cause of the poor GC synthesis. Lower GC levels in ZBTB32-/- mice are further associated with aberrations in the metabolic adaptation to starvation, which could potentially explain the progressive weight gain of ZBTB32-/- mice. Moreover, this study identifies that ZBTB32 performs a crosstalk with the GR in the metabolic adaptation to starvation via regulation of adrenal GC production.

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