Abstract:
:We assessed the effects of Zizyphus lotus L. (Desf.) polyphenols (ZLP) on T-cell signaling and proliferation. Our results showed that ZLP exerted no effect on the increases in intracellular free calcium concentrations, [Ca(2+)]i, in human Jurkat T-cells. However, ZLP modulated the thapsigargin-induced increases in [Ca(2+)]i in these cells. ZLP treatment was found to decrease the phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2). In addition, ZLP induced a rapid (t1/2=33s) and dose-dependent decrease in intracellular pH (pHi) in human Jurkat T-cells. Furthermore, ZLP significantly curtailed T-cell proliferation by diminishing their progression from S to G2/M phase of cell cycle, and the expression of interleukin-2 (IL-2) mRNA. Taken together, the results of the present study demonstrate that ZLP modulate cell signaling and exert immunosuppressive effects in human T-cells.
journal_name
Int Immunopharmacoljournal_title
International immunopharmacologyauthors
Abdoul-Azize S,Bendahmane M,Hichami A,Dramane G,Simonin AM,Benammar C,Sadou H,Akpona S,El Boustani ES,Khan NAdoi
10.1016/j.intimp.2012.11.013subject
Has Abstractpub_date
2013-02-01 00:00:00pages
364-71issue
2eissn
1567-5769issn
1878-1705pii
S1567-5769(12)00356-6journal_volume
15pub_type
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