Phosphatidylserine-Specific Receptor Contributes to TGF-β Production in Macrophages through a MAP Kinase, ERK(Biopharmacy)
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概要
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We explored the involvement of the phosphatidylserine (PS)-receptor in the production of TGF-β by macrophages treated with PS-liposomes. The binding of anti-PS-receptor antibody to macrophages was specifically inhibited by PS-liposomes. The antibody led to an increase in the production of TGF-β, and also activated ERK, a member of the MAP kinase. But no activations in p38 and JNK were observed. ERK inhibitor, U0126 completely prevented TGF-β production. On the addition of a TGF-β neutralizing antibody or U0126, the inhibitory effect of the anti-PS-receptor antibody on macrophage function, nitric oxide production, was restored. These findings suggested that TGF-β is one of factors produced by PS-liposomes, and the ERK signaling pathway via the PS-receptor is intimately involved in the production of TGF-β in macrophages.
- 2005-09-01
著者
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Otsuka Masaki
School Of Pharmacy Tokyo University Of Pharmacy And Life Science
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TSUCHIYA Seishi
School of Pharmacy, Tokyo University of Pharmacy and Life Science
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Tsuchiya Seishi
School Of Pharmacy Tokyo University Of Pharmacy And Life Science
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Aramaki Yukihiko
School Of Pharmacy Tokyo University Of Pharmacy And Life Science
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Goto Kentaro
School Of Pharmacy Tokyo University Of Pharmacy And Life Science
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