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Angptl 4 deficiency improves lipid metabolism, suppresses foam cell formation and protects against atherosclerosis

  • Hironori Adachi
  • , Yukio Fujiwara
  • , Tatsuya Kondo
  • , Takeshi Nishikawa
  • , Rei Ogawa
  • , Takeshi Matsumura
  • , Norio Ishii
  • , Ryoji Nagai
  • , Keishi Miyata
  • , Mitsuhisa Tabata
  • , Hiroyuki Motoshima
  • , Noboru Furukawa
  • , Kaku Tsuruzoe
  • , Junji Kawashima
  • , Motohiro Takeya
  • , Shizuya Yamashita
  • , Gou Young Koh
  • , Andras Nagy
  • , Toshio Suda
  • , Yuichi Oike
  • Eiichi Araki

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Angiopoietin-like protein family 4 (Angptl 4) has been shown to regulate lipoprotein metabolism through the inhibition of lipoprotein lipase (LPL). We generated ApoE-/-Angptl 4-/- mice to study the effect of Angptl 4 deficiency on lipid metabolism and atherosclerosis. Fasting and postolive oil-loaded triglyceride (TG) levels were largely decreased in ApoE-/-Angptl 4-/- mice compared with and ApoE-/-Angptl 4+/+ mice. There was a significant (75 ± 12%) reduction in atherosclerotic lesion size in ApoE-/-Angptl 4-/- mice compared with ApoE-/- Angptl 4+/+ mice. Peritoneal macrophages, isolated from Angptl 4-/- mice to investigate the foam cell formation, showed a significant decrease in newly synthesized cholesteryl ester (CE) accumulation induced by acetyl low-density lipoprotein (acLDL) compared with those from Angptl 4+/+ mice. Thus, genetic knockout of Angptl 4 protects ApoE-/- mice against development and progression of atherosclerosis and strongly suppresses the ability of the macrophages to become foam cells in vitro.

Original languageEnglish
Pages (from-to)806-811
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume379
Issue number4
DOIs
Publication statusPublished - 20 Feb 2009
Externally publishedYes

Keywords

  • Angptl 4
  • Apolipoprotein E
  • Atherosclerosis
  • Foam cell formation
  • Foam cells
  • Knockout mice
  • Lipid metabolism
  • Lipoprotein lipase
  • Macrophage
  • Oxidized low-density lipoprotein
  • Postprandial hypertriglyceridemia

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