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CXCL4 suppresses tolerogenic immune signature of monocyte-derived dendritic cells

Sandra C Silva-Cardoso1,2, Weiyang Tao1,2, Beatriz Malvar Fernández1,2

  • 1Center for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.

European Journal of Immunology
|June 6, 2020
PubMed

Insights

CXCL4 reduces tolerogenic gene expression in monocyte-derived dendritic cells (moDCs), including C1Q. This downregulation correlates with increased DNA methylation and immunogenic gene activity.

Area of Science:

  • Immunology
  • Molecular Biology
  • Epigenetics

Background:

  • Monocytes are differentiated into monocyte-derived dendritic cells (moDCs) over six days.
  • The role of chemokine CXCL4 in modulating moDC function and gene expression was investigated.
  • RNA sequencing and DNA methylomic profiling were employed to analyze gene expression and epigenetic modifications.

Discussion:

  • CXCL4 significantly downregulates genes critical for dendritic cell (DC) tolerogenicity, notably C1Q.
  • Gene expression levels of C1Q were found to be inversely correlated with DNA methylation patterns.
  • The presence of CXCL4 appears to promote a more immunogenic profile in moDCs.

Key Insights:

  • CXCL4 acts as a negative regulator of tolerogenic pathways in moDCs.
  • Epigenetic modifications, specifically DNA methylation, are linked to CXCL4-mediated gene silencing.
  • C1Q gene expression is a key target of CXCL4's immunomodulatory effects.

Outlook:

  • Further research into the precise mechanisms of CXCL4-induced epigenetic changes in DCs.
  • Exploring the therapeutic potential of targeting the CXCL4-DC axis in immune-related diseases.
  • Investigating the broader impact of CXCL4 on immune cell differentiation and function.
Keywords:
C1qCXCL4DNA methylationMonocyte-derived dendritic cellsRNA sequencing

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