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Updated: May 31, 2025

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Multi-omics analysis reveals novel causal pathways in psoriasis pathogenesis.

Hua Guo1,2, Jinyang Gao2, Liping Gong3

  • 1Department of Academic Research, The Second Hospital of Shandong University, Jinan, Shandong, China.

Journal of Translational Medicine
|January 23, 2025
PubMed
Summary

This study reveals key molecular pathways, involving RP11-977G19.11 and apolipoprotein F (APOF), linked to psoriasis risk. Findings suggest DNA methylation and gene expression influence psoriasis through these identified pathways.

Keywords:
Causal pathwaysDNA methylationGene expressionMendelian randomizationMulti-omicsProtein levelsPsoriasis

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Area of Science:

  • Genetics and Molecular Biology
  • Dermatology
  • Systems Biology

Background:

  • Psoriasis pathogenesis involves complex genetic and molecular factors.
  • Understanding these mechanisms requires integrating multi-omics data.

Purpose of the Study:

  • To investigate causal relationships between DNA methylation, gene expression, protein levels, and psoriasis risk.
  • To identify molecular pathways contributing to psoriasis using an integrative multi-omics approach.

Main Methods:

  • Summary-data-based Mendelian randomization (SMR) was employed.
  • Genome-wide association study (GWAS) summary statistics were integrated with mQTL, eQTL, and pQTL data.
  • Colocalization and HEIDI tests were used to identify shared causal variants.

Main Results:

  • Significant causal associations were found between molecular traits and psoriasis risk.
  • Two pathways involving long non-coding RNA RP11-977G19.11 and apolipoprotein F (APOF) were identified.
  • APOF was highlighted as a key protein in psoriasis pathogenesis, with associations validated in skin tissue.

Conclusions:

  • The study provides preliminary evidence for molecular mechanisms in psoriasis.
  • Identified pathways offer a framework for future research into psoriasis biology.
  • Further experimental validation is needed to confirm these findings.