The novel therapeutic target and inhibitory effects of PF-429242 against Zika virus infection

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学術機関リポジトリデータベース（IRDB）（機関リポジトリ）

The novel therapeutic target and inhibitory effects of PF-429242 against Zika virus infection

Material type: 博士論文

Author: RAINI, SANDRA KENDRA

Publisher: Elsevier B.V.

Publication date: 2022-03-18

Material Format: Digital

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Name of awarding university/degree: Nagasaki University (長崎大学),博士(医学)

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Note (General)：: Zika virus (ZIKV) is a re-emerging mosquito-borne flavivirus of African origin that is transmitted by Aedes mosquitoes. ZIKV was historically limited ...

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Material Type: 博士論文
Title: The novel therapeutic target and inhibitory effects of PF-429242 against Zika virus infection
Author/Editor: RAINI, SANDRA KENDRA
Author Heading: RAINI, SANDRA KENDRA
Publication, Distribution, etc.: Elsevier B.V.
Publication Date: 2022-03-18
Publication Date (W3CDTF): 2022-03-18
Alternative Title: ジカウイルス感染防御に資する新規宿主標的の同定とPF-429242の抗ウイルス効果
Periodical title: Antiviral Research
No. or year of volume/issue: 192
Volume: 192
Pages: 105121-
ISSN (Periodical Title): ISSN : 0166-3542
Degree grantor/type: Nagasaki University (長崎大学)
Date Granted: 2022-03-18
Dissertation Number: 甲医歯薬第1436号
Degree Type: 博士(医学)
Text Language Code: eng
Subject Heading: Zika virus
PF-429242 inhibitor
Antiviral
Drug discovery
Lipid metabolism
Target Audience: 一般
Note (General): Zika virus (ZIKV) is a re-emerging mosquito-borne flavivirus of African origin that is transmitted by Aedes mosquitoes. ZIKV was historically limited to Africa and Asia, where mild cases were reported. However, ZIKV has recently been responsible for major global outbreaks associated with a wide range of neurological complications. Since no antiviral therapy exists for ZIKV, drug discovery research for ZIKV is crucial. Intracellular lipids regulated by sterol regulatory element-binding proteins (SREBPs) are important in flavivirus pathogenesis. PF-429242 has been reported to inhibit the activity of site-1 protease (S1P), which regulates the expression of SREBP target genes. Our primary objective in this study is to elucidate the mechanism of the antiviral activity of PF-429242 against the African genotype (ZIKVMR-766) and Asian genotypes (ZIKV H/PF 2013 and ZIKV PRVABC59) using several primate-derived cell lines. The virus titer was determined via a focus-forming assay; we used flow cytometry to quantify intracellular lipids in ZIKV-infected and mock-treated cells. The PF-429242 molecule effectively suppressed ZIKV infection in neuronal cell lines; T98G, U-87MG, SK-N-SH and primary monocytes cell, indicating that PF-429242 molecule can be used therapeutically. A strong reduction in ZIKV replication was observed at 12 μM and 30 μM in in neuronal cell lines and primary monocytes, respectively. Interestingly, the inhibitory effects of the PF-429242 molecule were observed when it was tested on various ZIKV-lineage infections. Lipid quantification reveals that ZIKV increases lipogenesis in infected cells, while the exogenous addition of cholesterol effectively blocks ZIKV replication. Furthermore, the supplementation of oleic acid increases the ZIKV titer. Fenofibrate, an inhibitor of lipid droplet formation, reduces the ZIKV titer. Collectively, our results demonstrate that the development of antiviral drugs against ZIKV could be based on key regulators of lipid metabolism. In addition, this study reveals that the mechanism of the PF-429242-mediated suppression among flavivirus infections is not entirely identical. Our results warrant further evaluation of PF-429242 as a prospective antiviral drug, given the multiple advantageous properties of this compound, such as its limited toxicity, neuroprotective properties, and broad spectrum of capabilities.
長崎大学学位論文学位記番号:博(医歯薬)甲第1436号学位授与年月日:令和4年3月18日
Author: Sandra Kendra Raini, Yuki Takamatsu, Shyam Prakash Dumre, Shuzo Urata, Shusaku Mizukami, Meng Ling Moi, Daisuke Hayasaka, Shingo Inoue, Kouichi Morita, Mya Myat Ngwe Tun
Citation: Antiviral Research, 192, art.no.105121; 2021
identifier:Nagasaki University (長崎大学), 博士(医学) (2022-03-18)
Source: https://nagasaki-u.repo.nii.ac.jp/?action=repository_action_common_download&item_id=27418&item_no=1&attribute_id=70&file_no=1 （fulltext）
https://nagasaki-u.repo.nii.ac.jp/?action=repository_action_common_download&item_id=27418&item_no=1&attribute_id=70&file_no=1
Access Restrictions: インターネット公開
Related Material: http://hdl.handle.net/10069/00041439
Related Material (DOI): 10.1016/j.antiviral.2021.105121
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
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Original Data Provider (Database): 長崎大学 : 長崎大学学術研究成果リポジトリ