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PBMCs express a transcriptome signature predictor of oxygen uptake responsiveness to endurance exercise training in men.

Abstract：

:Peripheral blood cells are an accessible environment in which to visualize exercise-induced alterations in global gene expression patterns. We aimed to identify a peripheral blood mononuclear cell (PBMC) signature represented by alterations in gene expression, in response to a standardized endurance exercise training protocol. In addition, we searched for molecular classifiers of the variability in oxygen uptake (V̇o2). Healthy untrained policemen recruits (n = 13, 25 ± 3 yr) were selected. Peak V̇o2 (measured by cardiopulmonary exercise testing) and total RNA from PBMCs were obtained before and after 18 wk of running endurance training (3 times/wk, 60 min). Total RNA was used for whole genome expression analysis using Affymetrix GeneChip Human Gene 1.0 ST. Data were normalized by the robust multiarray average algorithm. Principal component analysis was used to perform correlations between baseline gene expression and V̇o2peak. A set of 211 transcripts was differentially expressed (ANOVA, P < 0.05 and fold change > 1.3). Functional enrichment analysis revealed that transcripts were mainly related to immune function, cell cycle processes, development, and growth. Baseline expression of 98 and 53 transcripts was associated with the absolute and relative V̇o2peak response, respectively, with a strong correlation (r > 0.75, P < 0.01), and this panel was able to classify the 13 individuals according to their potential to improve oxygen uptake. A subset of 10 transcripts represented these signatures to a similar extent. PBMCs reveal a transcriptional signature responsive to endurance training. Additionally, a baseline transcriptional signature was associated with changes in V̇o2peak. Results might illustrate the possibility of obtaining molecular classifiers of endurance capacity changes through a minimally invasive blood sampling procedure.

journal_name

Physiol Genomics

journal_title

Physiological genomics

authors

Dias RG,Silva MS,Duarte NE,Bolani W,Alves CR,Junior JR,da Silva JL,de Oliveira PA,Alves GB,de Oliveira EM,Rocha CS,Marsiglia JD,Negrao CE,Krieger EM,Krieger JE,Pereira AC

doi

10.1152/physiolgenomics.00072.2014

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

13-23

issue

eissn

1094-8341

issn

1531-2267

pii

physiolgenomics.00072.2014

journal_volume

pub_type

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PBMCs express a transcriptome signature predictor of oxygen uptake responsiveness to endurance exercise training in men.