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Peptidylarginine deiminases 2 and 4 modulate innate and adaptive immune responses in TLR-7 dependent lupus

ABSTRACT: Peptidylarginine deiminases 2 and 4 modulate innate and adaptive immune responses in TLR-7 dependent lupus

PROVIDER: PRJNA498311 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8106230.fastq.gz	Fastqsanger.gz
	SRR8106240.fastq.gz	Fastqsanger.gz
	SRR8106250.fastq.gz	Fastqsanger.gz
	SRR8106231.fastq.gz	Fastqsanger.gz
	SRR8106241.fastq.gz	Fastqsanger.gz

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Peptidylarginine deiminases 2 and 4 modulate innate and adaptive immune responses in TLR-7 dependent lupus

Project description:Peptidylarginine deiminases (PADs) play critical roles in the development and progression of autoimmune diseases. PAD4 is involved in systemic lupus erythematosus (SLE) pathogenesis while the role of PAD2 in immune dysregulation in SLE is not clear. The differential roles of PAD2 and PAD4 in the progression of murine SLE and in modulation of innate and adaptive immunity were examined. The transcriptome of lymphoid organs from imiquimod-treated PAD2/4 and control mice was characterized and elucidated using RNASeq technology.

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Peptidylarginine deiminases 2 and 4 modulate innate and adaptive immune responses in TLR-7-dependent lupus.

Project description:The peptidylarginine deiminases PAD2 and PAD4 are implicated in the pathogenesis of several autoimmune diseases. PAD4 may be pathogenic in systemic lupus erythematosus (SLE) through its role in neutrophil extracellular trap (NET) formation that promotes autoantigen externalization, immune dysregulation, and organ damage. The role of this enzyme in mouse models of autoimmunity remains unclear, as pan-PAD chemical inhibitors improve clinical phenotype, whereas PAD4-KO models have given conflicting results. The role of PAD2 in SLE has not been investigated. The differential roles of PAD2 and PAD4 in TLR-7-dependent lupus autoimmunity were examined. Padi4-/- displayed decreased autoantibodies, type I IFN responses, immune cell activation, vascular dysfunction, and NET immunogenicity. Padi2-/- mice showed abrogation of Th subset polarization, with some disease manifestations reduced compared with WT but to a lesser extent than Padi4-/- mice. RNA sequencing analysis revealed distinct modulation of immune-related pathways in PAD-KO lymphoid organs. Human T cells express both PADs and, when exposed to either PAD2 or PAD4 inhibitors, displayed abrogation of Th1 polarization. These results suggest that targeting PAD2 and/or PAD4 activity modulates dysregulated TLR-7-dependent immune responses in lupus through differential effects of innate and adaptive immunity. Compounds that target PADs may have potential therapeutic roles in T cell-mediated diseases.

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Peptidylarginine deiminase 4 promotes the renal infiltration of neutrophils and exacerbates the TLR7 agonist-induced lupus mice

Project description:Peptidylarginine deiminase 4 (PAD4), encoded by PADI4, plays critical roles in the immune system. The pathological roles of PAD4 were investigated in lupus model mice. PAD4-regulated pathways were identified by RNA-sequencing of WT and Padi4 KO neutrophils.

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Peptidylarginine deiminase 4 promotes the renal infiltration of neutrophils and exacerbates the TLR7 agonist-induced lupus mice

Project description:Peptidylarginine deiminase 4 promotes the renal infiltration of neutrophils and exacerbates the TLR7 agonist-induced lupus mice

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Impaired innate and adaptive immune responses to BNT162b2 SARS-CoV-2 vaccination in systemic lupus erythematosus

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