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Dimethyl fumarate induces ferroptosis and impairs NF-κB/STAT3 signaling in DLBCL

ABSTRACT: Dimethyl fumarate induces ferroptosis and impairs NF-κB/STAT3 signaling in DLBCL

PROVIDER: PRJNA689774 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13360129_1.fastq.gz	Fastqsanger.gz
	SRR13360129_2.fastq.gz	Fastqsanger.gz
	SRR13360130_1.fastq.gz	Fastqsanger.gz
	SRR13360130_2.fastq.gz	Fastqsanger.gz
	SRR13360131_1.fastq.gz	Fastqsanger.gz

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Dimethyl fumarate induces ferroptosis and impairs NF-κB/STAT3 signaling in DLBCL

Project description:Multi-agent chemotherapy still represents the first-line standard-of-care treatment for diffuse large B-cell lymphoma (DLBCL), the most common form of lymphoma in adults. However, the clinicopathological and molecular heterogeneity of DLBCLs poses a major challenge in their successful therapy. At least two major subtypes, i.e. germinal center B-cell-like (GCB) and the aggressive activated B-cell-like (ABC) DLBCL, which differ both in their gene expression profile and in their mutation patterns, have been identified. Here we demonstrate a broad inhibitory effect of dimethyl fumarate (DMF) on the outgrowth of both DLBCL subtypes, even though the molecular basis for its efficacy differs between GCB and ABC DLBCL. Due to high expression of arachidonate 5-lipoxygenase in concert with low glutathione and glutathione peroxidase 4 levels, DMF induced lipid peroxidation and thus ferroptotic cell death in GCB DLBCL. In contrast, in ABC DLBCL inhibition of NF-κB and STAT3 activity essentially contributed to DMF-dependent cytotoxicity. Interestingly, the BCL-2 specific BH3 mimetic ABT-199 or an inhibitor of the ferroptosis suppressor protein 1 synergized with DMF treatment in inducing cell death in DLBCL cell lines. Collectively, our findings identify the established and approved drug DMF as a promising novel therapeutic option in the treatment of both GCB and ABC DLBCL.

2021-07-01 | GSE164267 | GEO

BRD4 inhibition sensitizes diffuse large B-cell lymphoma cells to ferroptosis

Project description:Diffuse large B-cell lymphoma (DLBCL), the most common form of non-Hodgkin lymphoma, is characterized by an aggressive clinical course. In approximately one-third of DLBCL patients, first-line multi-agent immunochemotherapy fails to produce a durable response. Molecular heterogeneity and apoptosis resistance pose major therapeutic challenges in DLBCL treatment. To circumvent apoptosis resistance, the induction of ferroptosis might represent a promising strategy for lymphoma therapy. Here, a compound library targeting epigenetic modulators was screened to identify ferroptosis-sensitizing drugs. Strikingly, bromodomain and extra-terminal domain (BET) inhibitors sensitized cells of the germinal center B cell-like (GCB) subtype of DLBCL to ferroptosis induction and the combination of BET inhibitors with ferroptosis inducers, such as dimethyl fumarate (DMF) or RSL3, synergized in the killing of DLBCL cells in vitro and in vivo. On the molecular level, the BET protein BRD4 was found to be an essential regulator of ferroptosis suppressor protein 1 (FSP1) expression and to thus protect GCB DLBCL cells from ferroptosis. Collectively, we identified and characterized BRD4 as an important player in ferroptosis suppression in GCB DLBCL and provide a rationale for the combination of BET inhibitors with ferroptosis-inducing agents as a novel therapeutic approach for DLBCL treatment.

2023-08-01 | GSE231871 | GEO

A sensitization-free dimethyl fumarate (DMF) pro-drug, isosorbide di-(methyl fumarate) (IDMF), provides a topical treatment candidate for psoriasis [microarray]

Project description:Dimethyl fumarate (DMF) is an effective oral treatment for psoriasis administered in Europe for nearly 60 years. Its potential, however, has been limited by contact dermatitis that prohibits topical application. This paper characterizes a DMF derivative, isosorbide di-(methyl fumarate) (IDMF), which was designed to have anti-psoriatic effects without skin-sensitizing properties. We show that IDMF exhibits neither genotoxicity nor radiation sensitivity in skin fibroblasts and is non-irritating and non-sensitizing in animal models (rat, rabbit, guinea pig). Microarray analysis of cytokine-stimulated keratinocytes showed that IDMF represses the expression of genes specifically up-regulated in psoriatic skin lesions but not those of other skin diseases. IDMF also down-regulated genes induced by IL-17A and TNF in keratinocytes, as well as predicted targets of NF-κB and the anti-differentiation ncRNA (ANCR). IDMF further stimulated transcription of oxidative stress response genes (NQO1, GPX2, GSR) with stronger Nrf2/ARE activation compared to DMF. Finally, IDMF reduced erythema and scaling while repressing expression of immune response genes in psoriasiform lesions elicited by topical application of imiquimod in mice. These data demonstrate that IDMF exbibits anti-psoriatic activity that is similar or improved compared to DMF, without the harsh skin-sensitizing effects that have prevented topical delivery of the parent molecule.

2021-08-22 | GSE175473 | GEO

A sensitization-free dimethyl fumarate (DMF) pro-drug, isosorbide di-(methyl fumarate) (IDMF), provides a topical treatment candidate for psoriasis [RNA-seq]

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Expression data of renal cancer cell treated with Oncolytic virus VSVd51 and Fumaric acid esters such as Dimethyl fumarate

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2018-07-30 | GSE97328 | GEO

Chemical proteomic map of dimethyl fumarate-sensitive cysteines in primary human T cells

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2016-08-31 | MSV000080111 | MassIVE

Differential neuroprotective and anti-inflammatory effects of dimethyl fumarate, monomethyl fumarate and cannabidiol in neurons and microglia

Project description:Dimethyl fumarate (DMF) is an immunomodulatory treatment for multiple sclerosis (MS) that can cross the blood-brain barrier, presenting neuroprotective potential. Its mechanism of action is not fully understood and there is a need to characterize if DMF or its bioactive metabolite monomethyl fumarate (MMF) exert neuroprotective properties. The combination of adjuvant agents such as cannabidiol (CBD) could be relevant to enhance neuroprotection. The aim of this study was to compare the effects of DMF, MMF and CBD on neuroprotective and immunomodulatory pathways in neurons and microglia in vitro. We found that DMF and CBD, but not MMF, activated the Nrf2 antioxidant pathway in neurons. Similarly, only DMF and CBD, but not MMF, prevented the LPS-induced activation of the inflammatory pathway NF-kB in microglia. However, the 3 drugs inhibited the production of nitric oxide in microglia and protected neurons against apoptosis. Transcriptomically, DMF, MMF and CBD exhibited differential effects on these pathways, with DMF achieving the most pronounced changes. Our results show that DMF and MMF, despite being structurally related, present differences in their mechanisms of action that could be relevant for the achievement of neuroprotection in MS patients and the potential of CBD as an adjuvant therapy in neuroprotection.

2024-09-30 | GSE274435 | GEO

Differential neuroprotective and anti-inflammatory effects of dimethyl fumarate, monomethyl fumarate and cannabidiol in neurons and microglia

Project description:Differential neuroprotective and anti-inflammatory effects of dimethyl fumarate, monomethyl fumarate and cannabidiol in neurons and microglia

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Dimethyl itaconate inhibits secondary wave of NF-κB signaling in macrophage activation

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