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Tazume H, Miyata K, Tian Z, Endo M, Horiguchi H, Takahashi O, Horio E, Tsukano H, Kadomatsu T, Nakashima Y, Kunitomo R, Kaneko Y, Moriyama S, Sakaguchi H, Okamoto K, Hara M, Yoshinaga T, Yoshimura K, Aoki H, Araki K, Hao H, Kawasuji M, Oike Y. Macrophage-derived angiopoietin-like protein 2 accelerates development of abdominal aortic aneurysm. Arterioscler Thromb Vasc Biol 2012; 32:1400-9. [PMID: 22556334 DOI: 10.1161/atvbaha.112.247866] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Recently, we reported that angiopoietin-like protein 2 (Angptl2) functions in various chronic inflammatory diseases. In the present study, we asked whether Angptl2 and its associated chronic inflammation contribute to abdominal aortic aneurysm (AAA). METHODS AND RESULTS Immunohistochemistry revealed that Angptl2 is abundantly expressed in infiltrating macrophages within the vessel wall of patients with AAA and in a CaCl(2)-induced AAA mouse model. When Angptl2-deficient mice were used in the mouse model, they showed decreased AAA development compared with wild-type mice, as evidenced by reduction in aneurysmal size, less severe destruction of vessel structure, and lower expression of proinflammatory cytokines and matrix metalloproteinase-9. However, no difference in the number of infiltrating macrophages within the aortic aneurysmal vessel wall was observed between genotypes. AAA development was also significantly suppressed in wild-type mice that underwent Angptl2-deficient bone marrow transplantation. Expression levels of proinflammatory cytokines and metalloproteinase-9 in Angptl2-deficient macrophages were significantly decreased, and those decreases were rescued by treatment of Angptl2 deficient macrophages with exogenous Angptl2. CONCLUSIONS Macrophage-derived Angptl2 contributes to AAA development by inducing inflammation and degradation of extracellular matrix in the vessel wall, suggesting that targeting the Angptl2-induced inflammatory axis in macrophages could represent a new strategy for AAA therapy.
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Affiliation(s)
- Hirokazu Tazume
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
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Semangoen T, Sinchaikul S, Chen ST, Thongboonkerd V. Altered Proteins in MDCK Renal Tubular Cells in Response to Calcium Oxalate Dihydrate Crystal Adhesion: A Proteomics Approach. J Proteome Res 2008; 7:2889-96. [DOI: 10.1021/pr800113k] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Theptida Semangoen
- Medical Proteomics Unit and Medical Molecular Biology Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, Department of Immunology and Immunology Graduate Program, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand, Institute of Biological Chemistry and Genomic Research Center, Academia Sinica, Taipei, Taiwan, and Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Supachok Sinchaikul
- Medical Proteomics Unit and Medical Molecular Biology Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, Department of Immunology and Immunology Graduate Program, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand, Institute of Biological Chemistry and Genomic Research Center, Academia Sinica, Taipei, Taiwan, and Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Shui-Tein Chen
- Medical Proteomics Unit and Medical Molecular Biology Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, Department of Immunology and Immunology Graduate Program, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand, Institute of Biological Chemistry and Genomic Research Center, Academia Sinica, Taipei, Taiwan, and Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Visith Thongboonkerd
- Medical Proteomics Unit and Medical Molecular Biology Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand, Department of Immunology and Immunology Graduate Program, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand, Institute of Biological Chemistry and Genomic Research Center, Academia Sinica, Taipei, Taiwan, and Institute of Biochemical Sciences, College of Life Science, National Taiwan University, Taipei, Taiwan
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