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Nat Immunol. 2007 Aug;8(8):825-34. Epub 2007 Jun 24.

Differential glycosylation of TH1, TH2 and TH-17 effector cells selectively regulates susceptibility to cell death.

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División de Immunogenética. Hospital de Clínicas José de San Martín, Facultad de Medicina, Universidad de Buenos Aires, C1120AAF Buenos Aires, Argentina.


Regulated glycosylation controls T cell processes, including activation, differentiation and homing by creating or masking ligands for endogenous lectins. Here we show that stimuli promoting T helper type 1 (TH1), TH2 or interleukin 17-producing T helper (TH-17) differentiation can differentially regulate the glycosylation pattern of T helper cells and modulate their susceptibility to galectin-1, a glycan-binding protein with anti-inflammatory activity. Although TH1- and TH-17-differentiated cells expressed the repertoire of cell surface glycans critical for galectin-1-induced cell death, TH2 cells were protected from galectin-1 through differential sialylation of cell surface glycoproteins. Consistent with those findings, galectin-1-deficient mice developed greater TH1 and TH-17 responses and enhanced susceptibility to autoimmune neuroinflammation. Our findings identify a molecular link among differential glycosylation of T helper cells, susceptibility to cell death and termination of the inflammatory response.

[Indexed for MEDLINE]

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