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2017 ; 7
(1
): 10550
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A comprehensive characterization of the impact of mycophenolic acid on the
metabolism of Jurkat T cells
#MMPMID28874730
Fernández-Ramos AA
; Marchetti-Laurent C
; Poindessous V
; Antonio S
; Petitgas C
; Ceballos-Picot I
; Laurent-Puig P
; Bortoli S
; Loriot MA
; Pallet N
Sci Rep
2017[Sep]; 7
(1
): 10550
PMID28874730
show ga
Metabolic reprogramming is critical for T cell fate and polarization and is
regulated by metabolic checkpoints, including Myc, HIF-1?, AMPK and mTORC1. Our
objective was to determine the impact of mycophenolic acid (MPA) in comparison
with rapamycin (Rapa), an inhibitor of mTORC1, on the metabolism of Jurkat T
cells. We identified a drug-specific transcriptome signature consisting of the
key enzymes and transporters involved in glycolysis, glutaminolysis or nucleotide
synthesis. MPA produced an early and transient drop in the intracellular ATP
content related to the inhibition of de novo synthesis of purines, leading to the
activation of the energy sensor AMPK. MPA decreases glycolytic flux, consistent
with a reduction in glucose uptake, but also in the oxidation of glutamine.
Additionally, both drugs reduce aerobic glycolysis. The expression of HIF-1? and
Myc, promoting the activation of glycolysis and glutaminolysis, was inhibited by
MPA and Rapa. In conclusion, we report that MPA profoundly impacts the cellular
metabolism of Jurkat T cells by generating an energetic distress, decreasing the
glycolytic and glutaminolytic fluxes and by targeting HIF-1? and Myc. These
findings open interesting perspectives for novel combinatorial therapeutic
strategies targeting metabolic checkpoints to block the proliferation of T cells.