Associations of TNFA, IL17A, and RORC mRNA expression levels in peripheral blood leukocytes with obesity-related asthma in adolescents

José J. Leija-Martínez, Blanca E. Del-Río-Navarro, Fausto Sanchéz-Muñoz, Onofre Muñoz-Hernández, Enrique Hong, Abraham Giacoman-Martínez, Rodrigo Romero-Nava, Karla L. Patricio-Román, Margareth S. Hall-Mondragon, Dario Espinosa-Velazquez, Santiago Villafaña, Fengyang Huang

Research output: Contribution to journalArticlepeer-review

Abstract

Obesity is associated with a unique non-T2 asthma phenotype, characterised by a Th17 immune response. Retinoid-related orphan receptor C (RORC) is the master transcription factor for Th17 polarisation. We investigated the association of TNFA, IL17A, and RORC mRNA expression levels with the non-T2 phenotype. We conducted a cross-sectional study in adolescents, subdivided as follows: healthy (HA), allergic asthma without obesity (AA), obesity without asthma (OB), and non-allergic asthma with obesity (NAO). TNFA, IL17A, and RORC mRNA expression in peripheral blood leukocytes were assessed by RT-PCR. NAO exhibited higher TNFA mRNA expression levels than HA or OB, as well as the highest IL17A and RORC mRNA expression levels among the four groups. The best biomarker for discriminating non-allergic asthma among obese adolescents was RORC mRNA expression levels (area under the curve: 0.95). RORC mRNA expression levels were associated with the non-T2 asthma phenotype, hinting at a therapeutic target in obesity-related asthma.

Original languageEnglish
Article number108715
JournalClinical Immunology
Volume229
DOIs
StatePublished - Aug 2021

Keywords

  • Asthma
  • IL-17A
  • Non-allergic asthma
  • Obesity
  • RORC
  • Tumour necrosis factor-alpha

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