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KMID : 0043320160390111519
Archives of Pharmacal Research
2016 Volume.39 No. 11 p.1519 ~ p.1529
Lipoteichoic acids as a major virulence factor causing inflammatory responses via Toll-like receptor 2
Kang Seok-Seong

Sim Ju-Ri
Yun Cheol-Heui
Han Seung-Hyun
Abstract
Lipoteichoic acid (LTA), a major cell wall component of Gram-positive bacteria, is associated with various inflammatory diseases ranging from minor skin diseases to severe sepsis. It is known that LTA is recognized by Toll-like receptor 2 (TLR2), leading to the initiation of innate immune responses and further development of adaptive immunity. However, excessive immune responses may result in the inflammatory sequelae that are involved in severe diseases such as sepsis. Although numerous studies have tried to identify the molecular basis for the pathophysiology of Gram-positive bacterial infection, the exact role of LTA during the infection has not been clearly elucidated. This review provides an overview of LTA structure and host recognition by TLR2 that leads to the activation of innate immune responses. Emphasis is placed on differential immunostimulating activities of LTAs of various Gram-positive bacteria at the molecular level.
KEYWORD
Gram-positive bacteria, Lipoteichoic acid, Toll-like receptor, Innate immunity, Inflammation
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