2022 Fiscal Year Final Research Report
The role of increased low-molecular-weight hyaluronan in hepatic inflammation and fibrogenesis
Project/Area Number |
20K15695
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 42030:Animal life science-related
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Research Institution | Osaka Metropolitan University (2022) Osaka City University (2020-2021) |
Principal Investigator |
Takasugi Masaki 大阪公立大学, 大学院医学研究科, 助教 (30711965)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | ヒアルロン酸 / 老化 / 肥満 |
Outline of Final Research Achievements |
In order to investigate the role of low-molecular-weight hyaluronan in blood, we implanted a capsule that gradually release low-molecular weight hyaluronan in mouse. This doubled the levels of hyaluronan in blood over a week. We then performed transcriptomic analysis of liver, kidney, and spleen, which metabolize low-molecular-weight hyaluronan. Although hyaluronan levels were doubled not only in blood but also in the liver, almost no gene expression changes were observed in these tissues. These results suggest that, age- or obesity-related increase in blood low-molecular-weight hyaluronan levels do not have major deleterious effects.
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Free Research Field |
老化
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Academic Significance and Societal Importance of the Research Achievements |
本研究成果は、主にin vitroの解析から炎症促進作用が報告されている小分子ヒアルロン酸が、in vivoではそのような効果をあまり発揮しない事、ひいては加齢や肥満で増加する血中小分子ヒアルロン酸が治療のターゲットとしてはあまり期待できない事を示唆している。一方で近年、高分子ヒアルロン酸の生体内における有益性が注目されつつあり、本研究成果は生体内で高分子ヒアルロン酸を増加させた際に副次的に増加する小分子ヒアルロン酸が大きな為害性を発揮しない事も示唆しており、この点に関して当該分野の今後の研究にインパクトを及ぼす可能性が期待される。
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