2023 Fiscal Year Final Research Report
A universal design of nanoparticle-based antivirals against paramyxoviruses
Project/Area Number |
21K07763
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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 52050:Embryonic medicine and pediatrics-related
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Research Institution | Kurume University |
Principal Investigator |
Hara Koyu 久留米大学, 医学部, 准教授 (40309753)
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Co-Investigator(Kenkyū-buntansha) |
柏木 孝仁 久留米大学, 医学部, 准教授 (70320158)
渡邊 浩 久留米大学, 医学部, 教授 (90295080)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | 抗ウイルス薬 / パラミクソウイルス / モノネガウイルス / ペプチド阻害薬 / Pタンパク質 / 4量体形成部位 |
Outline of Final Research Achievements |
We have previously developed a phosphoprotein (P)-derived peptide, PFr, from Respiratory Syncytial Virus (RSV). This peptide targets the oligomerization domain of P and inhibits RSV replication. The structural architecture of the oligomerization domain is conserved across all Mononegavirales. Therefore, in this study, we focused on the largest family within the Mononegavirales order, the Paramyxoviridae, and applied the same design principles used for RSV to create PFr for paramyxoviruses. The resulting PFr peptides exhibited potent antiviral activity against parainfluenza virus, measles virus, and mumps virus, with IC50 values below 100 nM in cultured cells. These findings demonstrate that the PFr design strategy can be broadly applied to a variety of paramyxoviruses.
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Free Research Field |
ウイルス学
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Academic Significance and Societal Importance of the Research Achievements |
抗パラミクソウイルス薬は未だ開発されていない。本研究は、Pタンパク質の4量体形成領域を標的とした新しい抗パラミクソウイルス薬の開発が可能であることを裏付ける成果である。さらに、この創薬手法はパラミクソウイルス科以外の他のモノネガウイルスにも適用できることを示唆しており、広域な抗ウイルス活性をもつ阻害薬の開発に寄与できると考える。
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