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논문 기본 정보

자료유형
학술저널
저자정보
Lyu, Su-Yun (Immune Modulation Research Group, School of Pharmacy, University of Nottingham) Park, Won-Bong (College of Natural Sciences, Seoul Women's University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제30권 제10호
발행연도
2007.1
수록면
1,252 - 1,264 (13page)

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The anti-cancer activity of mistletoe has been ascribed to a combination of cytotoxic and immunological effects. We previously showed that Korean mistletoe lectin (Viscum album L. var. coloratum agglutinin, VCA) can stimulate IFN-${\gamma}$ production and modulate proliferation in murine splenocytes. In this study, we investigated the effects of VCA on human peripheral blood mononuclear cells (hPBMC) and T-lymphocytes. The addition of VCA resulted in a significant inhibition of proliferation at higher concentrations (at 2-8 ng/mL, 1-8 ng/mL in hPBMC and T-lymphocytes, respectively) but an induction at lower concentrations (at 4-16 pg/mL, 4-32 pg/mL in hPBMC and T-lymphocytes, respectively). Further studies were carried out to determine if the pro-proliferative or anti-proliferative activity exhibited by VCA was correlated with apoptosis and cytokine secretion. As a result, the apoptotic cell number increased to 26% after 48 h of VCA treatment (10 ng/mL) in the presence of anti-CD3/CD28 antibodies. On the other hand, without anti-CD3/CD28 antibody stimulants, VCA did not arrest cell cycle. In addition, it was shown that VCA could induce IL-2 secretion was dose-dependently increased by VCA in stimulated (anti-CD3/CD28 antibodies) (at 0.25-2 ng/mL) and non-stimulated (at 3-25 pg/mL) human T-Iymphocytes. Also, at low and non-toxic concentrations of VCA, the RT-PCR result confirmed the release of pro-inflammatory cytokines such as $IL-1{\alpha},\;IL-1{\beta}$, IL-6, IL-8, and IFN-${\gamma}$. These data may suggest new perspective to modulate the balance between cell growth, cytokine production and programmed cell death therapeutically.

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