摘要:The AIP1 fraction, a small water-soluble fraction purified from Artemisia iwayomogi , was shown to increase antibody production and suppress transplanted tumor cell growth in mice. In order to understand its immuno-modulating activity, we have examined the effect of the AIP1 on mouse thymocytes in vitro . Treatment of mouse thymocytes in culture with the fraction resulted in the suppression of the cell death and the extension of the cell survival. A mouse gene array provided a profile of gene expression change showing the pattern of up- and down-regulated genes by the AIP1 treatment, suggesting that the Fas/FasL-dependent apoptosis pathway might be modulated by the fraction.