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叶酸：一种潜在的抗 SARS-CoV-2 核衣壳蛋白抑制剂。

Folic acid: a potential inhibitor against SARS-CoV-2 nucleocapsid protein.

机构信息

Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, Chongqing, PR China.

Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, PR China.

出版信息

Pharm Biol. 2022 Dec;60(1):862-878. doi: 10.1080/13880209.2022.2063341.

DOI:10.1080/13880209.2022.2063341
PMID:35594385
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9132477/
Abstract

CONTEXT

Coronavirus disease 2019 is a global pandemic. Studies suggest that folic acid has antiviral effects. Molecular docking shown that folic acid can act on SARS-CoV-2 Nucleocapsid Phosphoprotein (SARS-CoV-2 N).

OBJECTIVE

To identify novel molecular therapeutic targets for SARS-CoV-2.

MATERIALS AND METHODS

Traditional Chinese medicine targets and virus-related genes were identified with network pharmacology and big data analysis. Folic acid was singled out by molecular docking, and its potential target SARS-CoV-2 N was identified. Inhibition of SARS-CoV-2 N of folic acid was verified at the cellular level.

RESULTS

In total, 8355 drug targets were potentially involved in the inhibition of SARS-CoV-2. 113 hub genes were screened by further association analysis between targets and virus-related genes. The hub genes related compounds were analysed and folic acid was screened as a potential new drug. Moreover, molecular docking showed folic acid could target on SARS-CoV-2 N which inhibits host RNA interference (RNAi). Therefore, this study was based on RNAi to verify whether folic acid antagonises SARS-CoV-2 N. Cell-based experiments shown that RNAi decreased expression by 81.7% ( < 0.001). This effect was decreased by 8.0% in the presence of SARS-CoV-2 N, indicating that SARS-CoV-2 N inhibits RNAi. With increasing of folic acid concentration, expression decreased, indicating that folic acid antagonises the regulatory effect of SARS-CoV-2 N on host RNAi.

DISCUSSION AND CONCLUSIONS

Folic acid may be an antagonist of SARS-CoV-2 N, but its effect on viruses unclear. In future, the mechanisms of action of folic acid against SARS-CoV-2 N should be studied.

摘要

背景

2019 年冠状病毒病是一种全球性大流行疾病。研究表明，叶酸具有抗病毒作用。分子对接表明，叶酸可以作用于 SARS-CoV-2 核衣壳磷蛋白（SARS-CoV-2 N）。

目的

寻找针对 SARS-CoV-2 的新型分子治疗靶标。

材料和方法

采用网络药理学和大数据分析方法确定中药靶点和病毒相关基因。通过分子对接筛选出叶酸，并确定其潜在的 SARS-CoV-2 N 靶标。在细胞水平上验证叶酸对 SARS-CoV-2 N 的抑制作用。

结果

共有 8355 个药物靶点可能参与了 SARS-CoV-2 的抑制。通过对靶点与病毒相关基因之间的进一步关联分析，筛选出 113 个枢纽基因。对枢纽基因相关化合物进行分析，筛选出叶酸作为一种潜在的新药。此外，分子对接表明，叶酸可以作用于 SARS-CoV-2 N，从而抑制宿主 RNA 干扰（RNAi）。因此，本研究基于 RNAi 验证叶酸是否拮抗 SARS-CoV-2 N。基于细胞的实验表明，RNAi 使 表达降低了 81.7%（<0.001）。在存在 SARS-CoV-2 N 的情况下，该作用降低了 8.0%，表明 SARS-CoV-2 N 抑制了 RNAi。随着叶酸浓度的增加， 表达降低，表明叶酸拮抗 SARS-CoV-2 N 对宿主 RNAi 的调节作用。

讨论和结论

叶酸可能是 SARS-CoV-2 N 的拮抗剂，但对病毒的作用尚不清楚。未来应研究叶酸对 SARS-CoV-2 N 的作用机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/86901a1a2f3c/IPHB_A_2063341_F0006b_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/db45da14845b/IPHB_A_2063341_F0001a_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/16dc1c2bf317/IPHB_A_2063341_F0001b_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/8b30a6708d95/IPHB_A_2063341_F0002_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/724c024c3013/IPHB_A_2063341_F0003_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/23f468c8e922/IPHB_A_2063341_F0004a_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/4aeba829355d/IPHB_A_2063341_F0004b_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/56dac122018b/IPHB_A_2063341_F0005_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/f5801d74fa58/IPHB_A_2063341_F0006a_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/86901a1a2f3c/IPHB_A_2063341_F0006b_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/db45da14845b/IPHB_A_2063341_F0001a_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/16dc1c2bf317/IPHB_A_2063341_F0001b_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/8b30a6708d95/IPHB_A_2063341_F0002_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/724c024c3013/IPHB_A_2063341_F0003_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/23f468c8e922/IPHB_A_2063341_F0004a_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/4aeba829355d/IPHB_A_2063341_F0004b_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/56dac122018b/IPHB_A_2063341_F0005_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/f5801d74fa58/IPHB_A_2063341_F0006a_C.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d17b/9132477/86901a1a2f3c/IPHB_A_2063341_F0006b_C.jpg

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