Blood transcriptional signature of recombinant human erythropoietin administration and implications for antidoping strategies.

Abstract:

:Recombinant human erythropoietin (rHuEPO) is frequently abused by athletes as a performance-enhancing drug, despite being prohibited by the World Anti-Doping Agency. Although the methods to detect blood doping, including rHuEPO injections, have improved in recent years, they remain imperfect. In a proof-of-principle study, we identified, replicated, and validated the whole blood transcriptional signature of rHuEPO in endurance-trained Caucasian males at sea level (n = 18) and Kenyan endurance runners at moderate altitude (n = 20), all of whom received rHuEPO injections for 4 wk. Transcriptional profiling shows that hundreds of transcripts were altered by rHuEPO in both cohorts. The main regulated expression pattern, observed in all participants, was characterized by a "rebound" effect with a profound upregulation during rHuEPO and a subsequent downregulation up to 4 wk postadministration. The functions of the identified genes were mainly related to the functional and structural properties of the red blood cell. Of the genes identified to be differentially expressed during and post-rHuEPO, we further confirmed a whole blood 34-transcript signature that can distinguish between samples collected pre-, during, and post-rHuEPO administration. By providing biomarkers that can reveal rHuEPO use, our findings represent an advance in the development of new methods for the detection of blood doping.

journal_name

Physiol Genomics

journal_title

Physiological genomics

authors

Durussel J,Haile DW,Mooses K,Daskalaki E,Beattie W,Mooses M,Mekonen W,Ongaro N,Anjila E,Patel RK,Padmanabhan N,McBride MW,McClure JD,Pitsiladis YP

doi

10.1152/physiolgenomics.00108.2015

subject

Has Abstract

pub_date

2016-03-01 00:00:00

pages

202-9

issue

3

eissn

1094-8341

issn

1531-2267

pii

physiolgenomics.00108.2015

journal_volume

48

pub_type

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