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© Research
Publication : FASEB journal : official publication of the Federation of American Societies for Experimental Biology

Costimulatory action of glycoinositolphospholipids from Trypanosoma cruzi: increased interleukin 2 secretion and induction of nuclear translocation of the nuclear factor of activated T cells 1

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in FASEB journal : official publication of the Federation of American Societies for Experimental Biology - 01 Sep 1999

Bellio M, Liveira AC, Mermelstein CS, Capella MA, Viola JP, Levraud JP, Dosreis GA, Previato JO, Mendonça-Previato L

Link to Pubmed [PMID] – 10463955

FASEB J. 1999 Sep;13(12):1627-36

The effects of the glycoinositolphospholipids (GIPLs) fromTrypanosoma cruzi on T lymphocyte activation were investigated in a mouse T cell hybridoma (DO-11.10). Purified GIPLs from T. cruzi strains Y and G markedly increased IL-2 mRNA transcripts and IL-2 secretion induced by mitogenic anti-CD3 and anti-Thy1 mAbs. This costimulatory function was also revealed by the induction of IL-2 secretion after the simultaneous addition of the T. cruzi GIPLs and either the calcium ionophore A23187 or phorbol ester. The capacity of the GIPL molecule to induce an increase in cytoplasmic calcium levels was also demonstrated. After exposure of T cell hybridoma to GIPL, the nuclear transcription factor NFAT1 became partially dephosphorylated, and its nuclear localization was demonstrated both in the T cell hybridoma and in Balb/c CD3(+) cells. These results demonstrate that T. cruzi GIPL molecules are capable of signaling to T cells and therefore could be valuable tools for the study of T cell activation, besides playing a potential role in subverting the T lymphocyte immune response during T. cruzi infection.

http://www.ncbi.nlm.nih.gov/pubmed/10463955