6533b862fe1ef96bd12c6d0c
RESEARCH PRODUCT
DHA induces Jurkat T-cell arrest in G2/M phase of cell cycle and modulates the plasma membrane expression of TRPC3/6 channels.
Naim Akhtar KhanBabar MurtazaElhadj Ahmed KoceirAmira Sayed KhanAziz HichamiHamza Saidisubject
0301 basic medicineDocosahexaenoic AcidsT-Lymphocyteschemistry.chemical_elementCalciumBiochemistryJurkat cellsCalcium in biology03 medical and health scienceschemistry.chemical_compoundJurkat CellsTRPC3TRPC6 Cation ChannelHumansTRPC Cation Channels030102 biochemistry & molecular biologyVoltage-dependent calcium channelIonomycinCell MembraneGeneral MedicineCell cycleCell biologyG2 Phase Cell Cycle Checkpoints030104 developmental biologychemistryGene Expression RegulationDocosahexaenoic acidIonomycinM Phase Cell Cycle CheckpointsTetradecanoylphorbol Acetatedescription
Abstract We investigated whether docosahexaenoic acid (DHA), a dietary n-3 fatty acid, modulates calcium (Ca2+) signaling and cell cycle progression in human Jurkat T-cells. Our study demonstrates that DHA inhibited Jurkat T-cell cycle progression by blocking their passage from S phase to G2/M phase. In addition, DHA decreased the plasma membrane expression of TRPC3 and TRPC6 calcium channels during T-cell proliferation. Interestingly, this fatty acid increased plasma membrane expression of TRPC6 after 24 h of mitogenic stimulation by phorbol-13-myristate-12-acetate (PMA) and ionomycin. These variations in the membrane expression of TRPC3 and TRPC6 channels were not directly correlated with the mRNA expression, indicating that it was a post-translational phenomenon. DHA increased free intracellular calcium concentrations, [Ca2+]i, via opening TRPC3 and TRPC6 channels. We conclude that the anti-proliferative effect of DHA might involve the modulation of TRPC3 and TRPC6 channels in human T-cells.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-02-01 | Biochimie |