A role for macrophage scavenger receptors in atherosclerosis and susceptibility to infection

Hiroshi Suzuki, Yukiko Kurihara, Motohiro Takeya, Nobuo Kamada, Motoyuki Kataoka, Kouichi Jishage, Otoya Ueda, Hisashi Sakaguchi, Takayuki Higashi, Tsukasa Suzuki, Yoshiaki Takashima, Yoshiki Kawabe, Osamu Cynshi, Youichiro Wada, Makoto Honda, Hiroki Kurihara, Hiroyuki Aburatani, Takefumi Doi, Akiyo Matsumoto, Sadahiro AzumaTetsuo Noda, Yutaka Toyoda, Hiroshige Itakura, Yoshio Yazaki, Seikoh Horiuchi, Kiyoshi Takahashi, J. Kar Kruijt, Theo J.C. Van Berkel, Urs P. Steinbrecher, Shun Ishibashi, Nobuyo Maeda, Siamon Gordon, Tatsuhiko Kodama*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

1061 Scopus citations

Abstract

Macrophage type-I and type-II class-A scavenger receptors (MSR-A) are implicated in the pathological deposition of cholesterol during atherogenesis as a result of receptor-mediated uptake of modified low-density lipoproteins (mLDL). MSR-A can bind an extraordinarily wide range of ligands, including bacterial pathogens, and also mediates cation-independent macrophage adhesion in vitro. Here we show that targeted disruption of the MSR-A gene in mice results in a reduction in the size of atherosclerotic lesions in on animal deficient in apolipoprotein E. Macrophages from MSR-A-deficient mice show a marked decrease in mLDL uptake in vitro, whereas mLDL clearance from plasma occurs at a normal rate, indicating that there may be alternative mechanisms for removing mLDL from the circulation. In addition, MSR-A-knockout mice show an increased susceptibility to infection with Listeria monocytogenes or herpes simplex virus type-1, indicating that MSR-A may play a part in host defence against pathogens.

Original languageEnglish
Pages (from-to)292-296
Number of pages5
JournalNature
Volume386
Issue number6622
DOIs
StatePublished - 20 03 1997
Externally publishedYes

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