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In vivo detection of autologous blood doping

ABSTRACT: On the trail of blood doping – a microRNA-based biomarker signature to detect autologous blood transfusions in vivo

PROVIDER: PRJEB38354 | ENA |

REPOSITORIES: ENA

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Identification of RNA Markers in Red Blood Cells for Doping Control in Autologous Blood Transfusion

Project description:We conducted an animal experiment and used total RNA sequencing (RNA-Seq) to identify novel RNA markers to detect autologous blood transfusion (ABT) doping within red blood cells (RBCs) as a pilot study before human trials. The total RNA-Seq and bioinformatics were performed using rat RBCs that were stored 10- and 20-day periods with citrate–phosphate–dextrose solution with adenine (CPDA) at 4°C In the results, we identified three significant genes whose expression levels were drastically decreased according to the storage period. Our novel insights may allow future studies to develop a test method for ABT doping.

2022-07-14 | GSE205806 | GEO

Identification of RNA Markers in Red Blood Cells for Doping Control in Autologous Blood Transfusion

Project description:Identification of RNA Markers in Red Blood Cells for Doping Control in Autologous Blood Transfusion

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Proof of Gene Doping in a Mouse Model with a Human Erythropoietin Gene Transferred Using an Adenoviral Vector

Project description:Gene doping model by hEPO (human erythropoietin) and adenoviral vector was established in the study. This study revealed that the gene expression profile in whole blood on the gene doping model significantly altered, which may be a new marker of hEPO-gene doping

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Integrating whole blood transcriptomic collection procedures into the current anti-doping testing system, including long-term storage and re-testing of anti-doping samples [Long-term]

Project description:Purpose: Recombinant human erythropoietin administration studies involving “omics” approaches have demonstrated a gene-expression signature that could aid detection of blood doping. However, current anti-doping testing does not involve blood collection into tubes with RNA preservative. This study investigated if whole blood in long-term storage could be used for transcriptomic analysis despite lacking RNA preservation. Methods: Whole blood samples were collected from thirteen male healthy individuals. Long-term storage: whole blood collected into Tempus™ tubes and K2EDTA tubes and subjected to long-term (i.e., −80°C) storage and RNA extracted. After storage, Tempus and K2EDTA tubes were thawed and extracted using Tempus™ Spin RNA Isolation Kit (Life Technologies, Carlsbad, CA, USA). Samples from seven subjects that presented higher RIN value (≥7) were selected for RNA_Seq analysis. Results: The experiment provided RNA quality and purity for gene expression analysis. Total of 19239 genes were mapped and the gene expression analysis showed that 658 genes were differentially expressed (which means 3.4% of mapped genes). With 269 being up-regulated and 389 down-regulated. None of the transcripts described in previous studies as biomarkers for blood doping (Durussel et al. 2016; Wang, Durussel, et al. 2017) were differently expressed. Conclusion: RNA quantity, purity and integrity was not significantly compromised from long-term storage in blood storage tubes lacking RNA stabilisation, indicating that transcriptomic/omics analysis could be conducted using anti-doping samples collected or biobanked without RNA preservation.

2021-09-03 | GSE183073 | GEO

Integrating whole blood transcriptomic collection procedures into the current anti-doping testing system, including long-term storage and re-testing of anti-doping samples

Project description:Recombinant human erythropoietin administration studies involving transcriptomic approaches have demonstrated a gene-expression signature that could aid detection of blood doping. However, current anti-doping testing does not involve blood collection into tubes with RNA preservative. This study investigated if whole blood in long-term storage and whole blood leftover from standard haematological testing in short-term storage could be used for transcriptomic analysis despite lacking RNA preservative. Whole blood samples were collected from thirteen and fourteen healthy males, for long-term and short-term storage experiments. Long-term storage: whole blood collected into Tempus™ tubes and K2EDTA tubes and subjected to long-term (i.e., −80°C) storage and RNA extracted. After storage, K2EDTA tubes were thawed and extracted using GeneJET RNA Purification Kit (Thermo Fisher Scientific, Vilnius, Lithuania) or Tempus™ Spin RNA Isolation Kit (Life Technologies, Carlsbad, CA, USA). RNA quality and purity was sufficient for gene expression analysis. Principle Component Analysis of microarray and RNA-seq gene expression data for long-term storage: When comparing gene expression between blood tubes with and without RNA preservation, 6% (4058 transcripts) were differentially expressed. RNA quantity, purity and integrity was not significantly compromised from long-term storage in blood storage tubes lacking RNA preservative, indicating that transcriptomic analysis could be conducted using anti-doping samples collected or biobanked without RNA preservation.

2021-08-13 | GSE181970 | GEO

Integrating whole blood transcriptomic collection procedures into the current anti-doping testing system, including long-term storage and re-testing of anti-doping samples [Short-term]

Project description:Purpose: Recombinant human erythropoietin administration studies involving “omics” approaches have demonstrated a gene-expression signature that could aid detection of blood doping. However, current anti-doping testing does not involve blood collection into tubes with RNA preservative. This study investigated if whole blood in short-term storage could be used for transcriptomic analysis despite lacking RNA preservation. Methods: Whole blood samples were collected from fourteen male healthy individuals. Short-term storage: whole blood collected into K2EDTA tubes and subjected to short-term (i.e., at 4°C) storage for 6 hours, 12 hours, 24 hours and 48 hours. After storage, blood from K2EDTA tubes were transferred into Tempus™ Blood tubes, and then extracted using Tempus™ Spin RNA Isolation Kit (Life Technologies, Carlsbad, CA, USA). Samples from four subjects of each time point that presented higher RIN value (≥7) were selected for RNA_Seq analysis. Results: The experiment provided RNA quality and purity for gene expression analysis. Considering 6-hours storage as a reference group, the number of differentially expressed genes were 19, 45 and 70 in comparison to 12, 24 and 48-hours, respectively (which means 0.37, 0.88 and 1.37% of mapped genes). Of the 19 differentially expressed genes in the comparison 6 vs. 12-hours, 9 overlapped with the 45 in the comparison 12 vs. 24-hours. Furthermore, 40 of those 45 overlapped with the 70 differentially expressed in the comparison 6 vs. 48-hours. None of the transcripts described in previous studies (Durussel et al. 2016; Wang, Durussel, et al. 2017) were differently expressed. Conclusion: RNA quantity, purity and integrity was not significantly compromised from short-term storage in blood storage tubes lacking RNA stabilisation, indicating that transcriptomic/omics analysis could be conducted using anti-doping samples collected without RNA preservation.

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Growth Hormone Doping Detection

Project description:DNA microarray technology was utilised for the identification of potential marker genes for the abuse of human growth hormone (hgh) in athletes. Keywords: Whole genome gene expression study

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