Abstract
Mistletoe lectins have various biological activities including anti-cancer and immunomodulatory effects. We previously isolated a lectin (ML-J) from Japanese mistletoe. In the present study, we examined the effects of ML-J on cytokine gene expression in human colon adenocarcinoma Caco-2 cells and in the mouse intestine. The results of reverse transcription-polymerase chain reaction and quantitative real-time polymerase chain reaction indicated that ML-J caused an upregulation of the gene expression of the proinflammatory cytokines interleukin (IL)-8, tumor necrosis factor-alpha (TNF-alpha) and IL-6 in Caco-2 cells and TNF-alpha and IL-6 in the duodenum. This study provides the first example to show that a perorally administered plant lectin affects gene expression in the duodenum.
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