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[Bioinformatic analysis of Eftud2 enhancing mouse macrophage function].

Ying Sun1, Peng Yang1, Zhonglin Lyu2

  • 1Inner Mongolia Key Laboratory of Molecular Biology, Inner Mongolia Medical University, Hohhot 010058; Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China.

Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi = Chinese Journal of Cellular and Molecular Immunology
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Summary

Elongation factor Tu GTP binding domain containing 2 (Eftud2) enhances macrophage immune function by regulating gene expression and alternative splicing, promoting inflammatory cytokine release.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Bioinformatics

Background:

  • Elongation factor Tu GTP binding domain containing 2 (Eftud2) is implicated in cellular processes.
  • Its role in enhancing murine macrophage immune function requires elucidation.
  • Understanding Eftud2's mechanisms is crucial for immune response research.

Purpose of the Study:

  • To elucidate the mechanisms by which Eftud2 enhances murine macrophage immune function.
  • To investigate the role of Eftud2 in gene expression and alternative splicing in macrophages.
  • To identify affected signaling pathways and molecular players.

Main Methods:

  • Bioinformatics analysis of bone marrow-derived macrophages (BMDMs) from Eftud2 myeloid cell-specific knockout (MKO) and wild-type (WT) mice.
  • Gene expression and alternative splicing analysis using DEGseq and rMATS.
  • Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis.

Main Results:

  • Eftud2 knockout (MKO) BMDMs showed down-regulated expression of IL-6, IL-1β, TNF-α, and immune response genes post-LPS stimulation compared to WT.
  • KEGG analysis revealed affected pathways including signal transduction, immune system metabolism, PI3K-AKT signaling, ubiquitination, and endocytosis.
  • 232 alternative splicing differences were observed in MKO BMDMs, with exon skipping being the most prevalent (125 instances).

Conclusions:

  • Eftud2 promotes inflammatory cytokine release in BMDMs by regulating gene expression and alternative splicing.
  • Eftud2 enhances macrophage immune function, partly through regulating alternative splicing of key molecules like MyD88 in the TLR4-NF-κB pathway.
  • Eftud2 plays a significant role in modulating macrophage immune responses.