Molecular mechanism of liver fibrosis progression by CCR2-positive macrophages in NASH
Project/Area Number |
19K11791
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 59040:Nutrition science and health science-related
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Research Institution | Okayama University |
Principal Investigator |
Inagaki Junko 岡山大学, 医歯薬学域, 助教 (90271056)
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Co-Investigator(Kenkyū-buntansha) |
渡辺 彰吾 岡山大学, 保健学域, 准教授 (20548341)
廣畑 聡 岡山大学, 保健学域, 教授 (90332791)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Project Status |
Completed (Fiscal Year 2021)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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Keywords | NASH / CCR2陽性マクロファージ / 線維化 / オステオポンチン / マクロファージ / 炎症性細胞 / CCR2陽性細胞 / 筋線維芽細胞 / 星細胞 |
Outline of Research at the Start |
近年、食生活の欧米化に伴い非アルコール性脂肪肝炎(NASH)の患者が急増している。肝における線維化が進行するとNASHから肝硬変、肝がんへと進展することから、肝線維化進展のメカニズム解明とその抑制は社会的にも急務である。そこで本研究では、NASHにおけるCCR2陽性マクロファージによる星細胞活性化および筋線維芽細胞への分化、オステオポンチンやMMPの発現制御の分子メカニズムを検討し、CCR2陽性細胞を介した肝線維化の分子機構を解明する。
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Outline of Final Research Achievements |
We analyzed the expression regions of CCR2 and osteopontin (OPN) using NASH rat model liver tissues, to elucidate the molecular mechanism of liver fibrosis in nonalcoholic steatohepatitis (NASH). In this study, the OPN expression region expanded as the increased number of weeks of HFC diet feeding, but its expression was observed only in the macrophages in the early stage of fibrosis. Moreover, as liver fibrosis progressed, OPN-positive region expanded and CCR2 was attenuated in the macrophage aggregation. Therefore, in the early stage of fibrosis, the macrophage aggregation was mainly composed CCR2-positive macrophages and gradually became OPN-positive macrophages. It became clear that a dynamic change of replacement occurs. This result suggests that there are different groups of OPN-positive and CCR2-positive macrophages and they may be closely related.
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Academic Significance and Societal Importance of the Research Achievements |
本研究成果より、肝線維化早期には、主にCCR2陽性マクロファージがマクロファージ集簇を構成し、次第にそれらがOPN陽性マクロファージに置き換わるという動態変化が起きる可能性を示すことができた。両マクロファージおよびOPNによる肝線維化促進の分子メカニズムを明らかにすることで、肝線維化治療の新たな創薬ターゲットの発見、治療法の開発および創薬研究につながると期待される。
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Report
(4 results)
Research Products
(29 results)
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[Journal Article] Potential of a Novel Chemical Compound Targeting Matrix Metalloprotease-13 for Early Osteoarthritis: An In Vitro Study2022
Author(s)
Inagaki J, Nakano A, Hatipoglu OF, Ooka Y, Tani Y, Miki A, Ikemura K, Opoku G, Ando R, Kodama S, Ohtsuki T, Yamaji H, Yamamoto S, Katsuyama E, Watanabe S, Hirohata S.
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Journal Title
Int J Mol Sci .
Volume: 23
Issue: 5
Pages: 2681-2681
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Osteopontin silencing attenuates bleomycin-induced murine pulmonary fibrosis by regulating epithelial-mesenchymal transition2021
Author(s)
Hatipoglu OF, Uctepe E, Opoku G, Wake H, Ikemura K, Ohtsuki T, Inagaki J, Gunduz M, Gunduz E, Watanabe S, Nishinaka T, Takahashi H, Hirohata S.
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Journal Title
Biomed Pharmacother
Volume: 139
Pages: 111633-111633
DOI
NAID
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Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Novel method for L-methionine determination using L-methionine decarboxylase and application of the enzyme for L-homocysteine determination.2020
Author(s)
Okawa, A., Hayashi, M., Inagaki, J., Okajima, T., Tamura, T., and Inagaki, K.
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Journal Title
Biosci. Biotechnol. Biochem.
Volume: 84
Issue: 5
Pages: 927-935
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Journal Article] Mechanical strain attenuates cytokine-induced ADAMTS9 expression via transient receptor potential vanilloid type 12019
Author(s)
Ohtsuki T, Shinaoka A, Kumagishi-Shinaoka K, Asano K, Hatipoglu OF, Inagaki J, Takahashi K, Oohashi T, Nishida K, Naruse K, Hirohata S
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Journal Title
Experimental Cell Research.
Volume: 383
Issue: 2
Pages: 111556-111556
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Presentation] New strategy for osteoarthritis therapy targeting metalloproteinase2020
Author(s)
Airi Nakano, Junko Inagaki, Takashi Ohtsuki, Shintaro Kodama, Miho Tachiki, Gabriel Opoku, Omer F. Hatipoglu, Kentaro Ikemura, Ryosuke Ando, Sakiko Hatamoto, Satoshi Hirohata
Organizer
第43回日本分子生物学会年会
Related Report
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[Presentation] ADAMTS1 null mice demonstrated omphalocele phenotypeAdamts1 was highly expressed in the ventral wall development2019
Author(s)
Omer Faruk Hatipoglu, Takashi Ohtsuki, Junko Inagaki, Courtney M Nelson, Timothy J Mead, Takuto Nishimura, Miho Tachiki, Kentaro Ikemura, Chang Lu, Yan Wanyu, Suneel S. Apte, Satoshi Hirohata
Organizer
ゴードンカンファレンス matrix metalloproteinase
Related Report
Int'l Joint Research
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[Presentation] IL-1 beta treatment up-regulated CD9 in exosome and chondrocyte2019
Author(s)
Wanyu Yan, Shintaro Kodama, Guole Liu, Takashi Ohtsuki, Omer Faruk Hatipoglu, Takuto Nishimura, Miho Tachiki, Junko Inagaki, Hiroshi Yamada, Takayuki Firumatsu, Keiichiro Nishida, Liankun Sun, Satoshi Hirohata
Organizer
第42回日本分子生物学会年会
Related Report