作者
Osamu Takeuchi, Katsuaki Hoshino, Taro Kawai, Hideki Sanjo, Haruhiko Takada, Tomohiko Ogawa, Kiyoshi Takeda, Shizuo Akira
发表日期
1999/10/1
期刊
Immunity
卷号
11
期号
4
页码范围
443-451
出版商
Elsevier
简介
Toll-like receptor (TLR) 2 and TLR4 are implicated in the recognition of various bacterial cell wall components, such as lipopolysaccharide (LPS). To investigate in vivo roles of TLR2, we generated TLR2-deficient mice. In contrast to LPS unresponsiveness in TLR4-deficient mice, TLR2-deficient mice responded to LPS to the same extent as wild-type mice. TLR2-deficient macrophages were hyporesponsive to several Gram-positive bacterial cell walls as well as Staphylococcus aureus peptidoglycan. TLR4-deficient macrophages lacked the response to Gram-positive lipoteichoic acids. These results demonstrate that TLR2 and TLR4 recognize different bacterial cell wall components in vivo and TLR2 plays a major role in Gram-positive bacterial recognition.
引用总数
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