Abstract
Ulmus macrocarpa has been used in Korean medicinal food material to physical disorder or tonic material. The purpose of the present study was to evaluate splenocyte life span expansion effects of Ulmus macrocarpa water extract (UMWE) in general cell culture condition. Splenocytes were handled in the presence of 100 μg/ml UMWE for several different time conditions. Live cells were detected with Hoechst 33,342 dye and cell survival molecules were identified through Western blot. Changes in level of cytokine synthesis were evaluated by ELISA. UMWE showed an effect on increased splenocyte survival. UMWE elevated slightly PI3K phosphorylation and ERK1/2 phosphorylation used at 48 hr and 96 hr. Moreover, Bcl-2 was elevated at 48 hr and 96 hr in UMWE-treated splenocytes. UMWE decreased caspase-3 level at 48 hr and 96 hr. ICAD protein increased at 48 hr culturing time. Hematopoietin IL-2 cytokine was down-regulated, however IL-4 hematopoietin cytokine was up-regulated in UMWE treated cell culture media. Increased IFN-γ levels were verified in the supernatant of UMWEtreated cells in all periods (48 hr and 96 hr). Increased patterns in the production of IL-12 cytokine occurred as compared with control after 48 and 96 hr in UMWE-treated-cell cultures. These results suggested that UMWE can prolong splenocyte life span by controlling various signal factors and cytokines.
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