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Effect of bryostatin-1 on gene expression profile of Raji cells

ABSTRACT: Effect of bryostatin-1 on gene expression profile of Raji cells

PROVIDER: PRJNA869939 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21081800_1.fastq.gz	Fastqsanger.gz
	SRR21081800_2.fastq.gz	Fastqsanger.gz
	SRR21081801_1.fastq.gz	Fastqsanger.gz
	SRR21081801_2.fastq.gz	Fastqsanger.gz
	SRR21081802_1.fastq.gz	Fastqsanger.gz

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Effect of bryostatin-1 on gene expression profile of Raji cells

Project description:To investigate bryostain's effect on Raji , we performed a whole-transcriptome RNA sequencing experiment for Raji cells treated with Bryostatin and established differntial expression profile comparing to raji treated with DMSO.

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Effect of bryostatin-1 on in vitro exhausted CD8+ T cells

Project description:Bryostatin-1, a pharmacological agent from marine organisms, has been studied for HIV and cancer therapies due to its modulation of protein kinase C. In our previous study (Zhao M et al. Pharmacological research. 2019;139:524-34.), we found that bryostatin-1 downregulated inhibitory receptor PD-1 on activated CD8+ T cells from people with HIV. Since HIV-specific CD8+ T cells become functionally exhausted during chronic HIV infection and PD-1 expression is known to be related to the exhaustion state of these cells, we hypothesized that bryostatin-1 may modulate CD8+ T cell exhaustion. To test this, we generated in vitro exhausted OT-I CD8+ T cells as previously described (Zhao M et al PLoS Pathog. 16(6): e1008555) by repeatedly stimulating cells with OVA(257-264) peptide. Then we treated both exhausted CD8+ T cells (repeat peptide stimulated cells) and non-exhausted CD8+ T cells (single peptide stimulated cells) with bryostatin-1 for 3 days. We found that bryostatin-1 decreased exhaustion-associated markers and improved the functionality of exhausted CD8+ T cells. To investigate the underlying mechanism of how bryostatin-1 exerts its effects on exhausted CD8+ T cells, we performed RNA-sequencing (RNA-seq) on in vitro exhausted OT- I CD8+ T cells which were treated with bryostatin-1 or DMSO, with single peptide stimulated cells as non-exhausted controls. Taken together, our study demonstrate bryostatin-1's effect on exhausted CD8+ T cells and bryostatin-1's potential in enhancing T cell immunity against chronic infection or cancer.

2025-01-06 | GSE284406 | GEO

Epigenetic changes of Raji Epstein–Barr viral genome in reponse to byrostatin treatment

Project description:We report the application of cut&tag technology for high-throughput profiling of histone modifications Raji Epstein–Barr viral genome in reponse to bryostatin treatment. Dual- and tri-methylation of lysine 4 on histone H3 protein indicate genes that are actively expressed/regulated. Tri-methylation of lysine 27 on histone H3 protein marks genes that are negatively regulated or suppressed for expression.

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Gene expression assay from Raji human B cells

Project description:Nuclear RNA from Raji human B cells was hybridized to NimbleGen arrays to quantify gene expression levels.

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Effect of bryostatin-1 on in vitro exhausted CD8+ T cells

Project description:Effect of bryostatin-1 on in vitro exhausted CD8+ T cells

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Greater transiency in modulation of gene expression is the predominant difference between the actions of bryostatin 1 and phorbol ester in LNCaP and U937 cells [set 2]

Project description:Bryostatin 1, like the phorbol ester PMA, activates protein kinase C (PKC) in vitro but paradoxically blocks many phorbol ester responses in vivo. Results with a limited panel of genes suggested that transiency of action was an important mechanism contributing to this differential cellular response. Here, we examined global gene expression in LNCaP and U937 cell lines to probe the extent to which transiency of action captures the difference in response. While different genes showed different patterns of relative response, the overall pattern was reflective of an initial PMA-like response to bryostatin 1 followed by variable transiency of the continued response. This conclusion was further strengthened by detailed time course measurements by qPCR of selected genes. Merle 23, a bryostatin derivative with biological behavior intermediate between that of bryostatin 1 and PMA, was likewise intermediate for transiency of action. Both the LNCaP and U937 cell lines behaved similarly, but the extent of transiency in response to bryostatin 1 was greater in the LNCaP cells.

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Greater transiency in modulation of gene expression is the predominant difference between the actions of bryostatin 1 and phorbol ester in LNCaP and U937 cells [set 1]

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Project description:Expression of the TM4SF member CD9 on the human Burkitts lymphoma cell line Raji induced increased cell proliferation, motilty and adhesion to fibronectin. CD9 promoted increases in Raji cell proliferation was dependent upon histone deacetyalase (HDAC) activity as treatment with HDAC inhibitors trichostain A or cucurmin attenuated CD9 mediated increases in Raji cell proliferation. Gene expression of Raji cells stably expressing human CD9 via transfection with expression vector PRVCMVCD9 was compared with corresponding Mock transfected cell by microarray analysis using the Affymetrix U133 2.0 platform.

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Project description:We report the application of cut&tag technology for high-throughput profiling of histone modifications in leuemia cells in reponse to bryostatin treatment. We generated genome-wide chromatin-state landscape of NALM6, REH and Raji cells. Dual- and tri-methylation of lysine 4 on histone H3 protein indicate genes that are actively expressed/regulated. Tri-methylation of lysine 27 on histone H3 protein marks genes that are negatively regulated or suppressed for expressiom. We compared differential peaks for cells treated with or without bryostatin to demonstrate genes responding to bryostatin treatment on epigenetic level.

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Effect of HNF4α overexpression on gene expression profile

Project description:Effect of HNF4α overexpression on gene expression profile

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