TY - JOUR
T1 - Maturation of monocyte-derived dendritic cells by Hochu-ekki-to, a traditional Japanese herbal medicine
AU - Nabeshima, Shigeki
AU - Murata, Masayuki
AU - Hamada, Maki
AU - Chong, Yong
AU - Yamaji, Kouzaburo
AU - Hayashi, Jun
PY - 2004/1
Y1 - 2004/1
N2 - To investigate the immunological effect of the traditional Japanese herbal medicine (kampo), Hochu-ekki-to (HOT), on dendritic cells (DC), we examined in vitro if HOT would stimulate the maturation process of human monocyte-derived DC as do TNF-α and LPS. Monocytes from a healthy volunteer were cultured in the presence of IL-4 and GM-CSF, and the generated immature DC were stimulated with HOT, TNF-α, or LPS (HOT-DC, TNF-DC, and LPS-DC, respectively) for 2 days. Flow cytometric analysis showed that HOT stimulated DC to express the surface maturation markers CD80, CD83, and CD86 dose-dependently and that the up-regulation level was identical to TNF-α and LPS. The antigen-uptake capacity of HOT-DC was determined by FITC-labeled albumin uptake. HOT-DC lost albumin uptake capacity comparable to LPS-DC, indicating DC maturity. IL-12 (p70) production by HOT-DC and TNF-DC was not increased in comparison with LPS-DC. The antigen-presenting capacity of HOT-DC as analyzed by allogeneic T cell proliferation was significantly increased in comparison with immature DC and was identical to LPS-DC. These results demonstrate that HOT stimulates DC maturation as well as the other known maturation factors, despite low IL-12 production, and suggests the possibility that DC maturation by HOT can play an important role in the improvement of the immunoregulatory function in patients with impaired host defense.
AB - To investigate the immunological effect of the traditional Japanese herbal medicine (kampo), Hochu-ekki-to (HOT), on dendritic cells (DC), we examined in vitro if HOT would stimulate the maturation process of human monocyte-derived DC as do TNF-α and LPS. Monocytes from a healthy volunteer were cultured in the presence of IL-4 and GM-CSF, and the generated immature DC were stimulated with HOT, TNF-α, or LPS (HOT-DC, TNF-DC, and LPS-DC, respectively) for 2 days. Flow cytometric analysis showed that HOT stimulated DC to express the surface maturation markers CD80, CD83, and CD86 dose-dependently and that the up-regulation level was identical to TNF-α and LPS. The antigen-uptake capacity of HOT-DC was determined by FITC-labeled albumin uptake. HOT-DC lost albumin uptake capacity comparable to LPS-DC, indicating DC maturity. IL-12 (p70) production by HOT-DC and TNF-DC was not increased in comparison with LPS-DC. The antigen-presenting capacity of HOT-DC as analyzed by allogeneic T cell proliferation was significantly increased in comparison with immature DC and was identical to LPS-DC. These results demonstrate that HOT stimulates DC maturation as well as the other known maturation factors, despite low IL-12 production, and suggests the possibility that DC maturation by HOT can play an important role in the improvement of the immunoregulatory function in patients with impaired host defense.
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U2 - 10.1016/j.intimp.2003.10.002
DO - 10.1016/j.intimp.2003.10.002
M3 - Article
C2 - 14975358
AN - SCOPUS:1242329084
VL - 4
SP - 37
EP - 45
JO - International Immunopharmacology
JF - International Immunopharmacology
SN - 1567-5769
IS - 1
ER -
