Frontiers in Immunology (Jun 2023)

Serum metabolomic analysis reveals disorder of steroid hormone biosynthesis in patients with idiopathic inflammatory myopathy

  • Tong Huo,
  • Xueting Yuan,
  • Xueting Yuan,
  • Xueting Yuan,
  • Xueting Yuan,
  • Jingyi Han,
  • Jingyi Han,
  • Jia Shi,
  • Jia Shi,
  • Jia Shi,
  • Jia Shi,
  • Yuehan Xiong,
  • Feng Tian,
  • Zihan Xu,
  • Menghua Cai,
  • Yi Xu,
  • Yi Xu,
  • Hui Chen,
  • Hui Chen,
  • Xiaofeng Zeng,
  • Xiaofeng Zeng,
  • Xiaofeng Zeng,
  • Xiaofeng Zeng,
  • Wei He,
  • Qian Wang,
  • Qian Wang,
  • Qian Wang,
  • Qian Wang,
  • Jianmin Zhang,
  • Jianmin Zhang,
  • Jianmin Zhang,
  • Jianmin Zhang

DOI
https://doi.org/10.3389/fimmu.2023.1188257
Journal volume & issue
Vol. 14

Abstract

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Idiopathic inflammatory myopathy (IIM) is a heterogeneous group of autoimmune diseases with various clinical manifestations, treatment responses, and prognoses. According to the clinical manifestations and presence of different myositis-specific autoantibodies (MSAs), IIM is classified into several major subgroups, including PM, DM, IBM, ASS, IMNM, and CADM. However, the pathogenic mechanisms of these subgroups remain unclear and need to be investigated. Here, we applied MALDI-TOF-MS to examine the serum metabolome of 144 patients with IIM and analyze differentially expressed metabolites among IIM subgroups or MSA groups. The results showed that the DM subgroup had lower activation of the steroid hormone biosynthesis pathway, while the non-MDA5 MSA group had higher activation of the arachidonic acid metabolism pathway. Our study may provide some insights into the heterogeneous mechanisms of IIM subgroups, potential biomarkers, and management of IIM.

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