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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Immunosuppressive activity of fosfomycin on human T-lymphocyte function in vitro.

Recent investigations have shown that some antibiotics also work as immunomodulators. We have recently reported that fosfomycin (FOM) has an immunomodulatory effect on human B-cell activation. FOM is a unique antibiotic which is chemically unrelated to any other known antibacterial agent. In the present study, we examined the effect of FOM on human T-cell function. FOM inhibited the proliferation of human lymphocytes induced by polyclonal T-cell mitogens in a dose-dependent manner. FOM also strongly suppressed mixed lymphocyte reaction and interleukin-2 (IL-2) production by T cells. Moreover, FOM inhibited the expressions of IL-2 receptor (CD25) and transferrin receptor (CD71) on the activated T-cell surfaces. These data suggest that FOM may block the T-cell division during the transition from G1 to S phase of the cell cycle. Combined treatment with FOM and low-dose cyclosporin A or FK506 caused additive or synergistic suppression of T-cell proliferation, but not on IL-2 receptor expression. It seems that the mode of action of FOM on T-cell function involves a specific suppression of IL-2 production.[1]


  1. Immunosuppressive activity of fosfomycin on human T-lymphocyte function in vitro. Morikawa, K., Oseko, F., Morikawa, S., Sawada, M. Antimicrob. Agents Chemother. (1993) [Pubmed]
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