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<p>Xenon and cobalt are representatives of hypoxia-inducible factor (HIF) activators stimulating erythropoiesis and are prohibited by the World Anti-Doping Agency (WADA). The expression profiles of 84 microRNAs circulating in blood plasma and involved in the regulation of the HIF-1α transcription factor and its downstream signaling pathways were analyzed in volunteers before and after intake of cobalt (II) and xenon preparations using quantitative real-time PCR and certified miRCURY LNA miRNA Focus Panel (Qiagen) for analysis of microRNA expression profiles. Intake of cobalt aspartate increased the expression of hsa-miR-15b-5p, while inhalation of the Xe/O<sub>2</sub> mixture significantly increased the plasma levels of hsa-miR-378a-3p and hsa-miR-491-5p. Thus, we for the first time revealed differential expression of microRNAs circulating in plasma in response to various HIF activators. Potential microRNA markers for identification of cobalt and xenon abuse for anti-doping control are proposed.</p>

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Analysis of Specific MicroRNAs Expressed after Intake of Cobalt and Xenon Preparations for Anti-Doping Control

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • P. V. Postnikov,
  • I. V. Pronina,
  • D. S. Polyansky,
  • Yu. A. Efimova,
  • Z. G. Ordzhonikidze,
  • V. A. Badtieva,
  • D. B. Nikityuk

摘要

Xenon and cobalt are representatives of hypoxia-inducible factor (HIF) activators stimulating erythropoiesis and are prohibited by the World Anti-Doping Agency (WADA). The expression profiles of 84 microRNAs circulating in blood plasma and involved in the regulation of the HIF-1α transcription factor and its downstream signaling pathways were analyzed in volunteers before and after intake of cobalt (II) and xenon preparations using quantitative real-time PCR and certified miRCURY LNA miRNA Focus Panel (Qiagen) for analysis of microRNA expression profiles. Intake of cobalt aspartate increased the expression of hsa-miR-15b-5p, while inhalation of the Xe/O2 mixture significantly increased the plasma levels of hsa-miR-378a-3p and hsa-miR-491-5p. Thus, we for the first time revealed differential expression of microRNAs circulating in plasma in response to various HIF activators. Potential microRNA markers for identification of cobalt and xenon abuse for anti-doping control are proposed.