Frontiers in Microbiology (Sep 2022)

Microbial and human transcriptional profiling of coronavirus disease 2019 patients: Potential predictors of disease severity

  • Hairun Gan,
  • Hairun Gan,
  • Hairun Gan,
  • Jiumeng Min,
  • Jiumeng Min,
  • Haoyu Long,
  • Haoyu Long,
  • Haoyu Long,
  • Bing Li,
  • Xinyan Hu,
  • Xinyan Hu,
  • Xinyan Hu,
  • Zhongyi Zhu,
  • Zhongyi Zhu,
  • Luting Li,
  • Luting Li,
  • Luting Li,
  • Tiancheng Wang,
  • Tiancheng Wang,
  • Tiancheng Wang,
  • Xiangyan He,
  • Xiangyan He,
  • Jianxun Cai,
  • Jianxun Cai,
  • Jianxun Cai,
  • Yongyu Zhang,
  • Jianan He,
  • Luan Chen,
  • Luan Chen,
  • Dashuai Wang,
  • Jintao Su,
  • Jintao Su,
  • Ni Zhao,
  • Weile Huang,
  • Jingjing Zhang,
  • Ziqi Su,
  • Ziqi Su,
  • Hui Guo,
  • Xiaojun Hu,
  • Xiaojun Hu,
  • Xiaojun Hu,
  • Junjie Mao,
  • Junjie Mao,
  • Junjie Mao,
  • Jinmin Ma,
  • Pengfei Pang,
  • Pengfei Pang,
  • Pengfei Pang

DOI
https://doi.org/10.3389/fmicb.2022.959433
Journal volume & issue
Vol. 13

Abstract

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The high morbidity of patients with coronavirus disease 2019 (COVID-19) brings on a panic around the world. COVID-19 is associated with sex bias, immune system, and preexisting chronic diseases. We analyzed the gene expression in patients with COVID-19 and in their microbiota in order to identify potential biomarkers to aid in disease management. A total of 129 RNA samples from nasopharyngeal, oropharyngeal, and anal swabs were collected and sequenced in a high-throughput manner. Several microbial strains differed in abundance between patients with mild or severe COVID-19. Microbial genera were more abundant in oropharyngeal swabs than in nasopharyngeal or anal swabs. Oropharyngeal swabs allowed more sensitive detection of the causative SARS-CoV-2. Microbial and human transcriptomes in swabs from patients with mild disease showed enrichment of genes involved in amino acid metabolism, or protein modification via small protein removal, and antibacterial defense responses, respectively, whereas swabs from patients with severe disease showed enrichment of genes involved in drug metabolism, or negative regulation of apoptosis execution, spermatogenesis, and immune system, respectively. Microbial abundance and diversity did not differ significantly between males and females. The expression of several host genes on the X chromosome correlated negatively with disease severity. In this way, our analyses identify host genes whose differential expression could aid in the diagnosis of COVID-19 and prediction of its severity via non-invasive assay.

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