Altered erythroid-related miRNA levels as a possible novel biomarker for detection of autologous blood transfusion misuse in sport / Jessica Gasparello, Nicola Lamberti, Chiara Papi, Ilaria Lampronti, Lucia Carmela Cosenza, Enrica Fabbri, Nicoletta Bianchi, Christel Zambon, Francesca Dalla Corte, Maurizio Govoni, Roberto Reverberi, Fabio Manfredini, Roberto Gambari, Alessia Finotti. - (Transfusions (2019) 30 May; p. 1-13).
- PMID: 31148196.
- DOI: 10.1111/trf.15383
This project has been carried out with the support of the World Anti‐Doping Agency
Autologous blood transfusion (ABT) is a performance-enhancing method prohibited in sport; its detection is a key issue in the field of anti-doping. Among novel markers enabling ABT detection, microRNAs (miRNAs) might be considered a promising analytical tool.
STUDY DESIGN AND METHODS:
We studied the changes of erythroid-related microRNAs following ABT, to identify novel biomarkers. Fifteen healthy trained males were studied from a population of 24 subjects, enrolled and randomized into a Transfusion (T) and a Control (C) group. Seriated blood samples were obtained in the T group before and after the two ABT procedures (withdrawal, with blood refrigerated or cryopreserved, and reinfusion), and in the C group at the same time points. Traditional hematological parameters were assessed. Samples were tested by microarray analysis of a pre-identified set of erythroid-related miRNAs.
Hematological parameters showed moderate changes only in the T group, particularly following blood withdrawal. Among erythroid-related miRNAs tested, following ABT a pool of 7 miRNAs associated with fetal hemoglobin and regulating transcriptional repressors of gamma-globin gene was found stable in C and differently expressed in three out of six T subjects in the completed phase of ABT, independently from blood conservation. Particularly, two or more erythropoiesis-related miRNAs within the shortlist constituted of miR-126-3p, miR-144-3p, miR-191-3p, miR-197-3p, miR-486-3p, miR-486-5p, and miR-92a-3p were significantly upregulated in T subjects after reinfusion, with a person-to-person variability but with congruent changes.
This study describes a signature of potential interest for ABT detection in sports, based on the analysis of miRNAs associated with erythroid features.