Structural insights into Semiliki forest virus receptor binding modes indicate novel mechanism of virus endocytosis
2024

How Semliki Forest Virus Uses VLDLR to Enter Cells

publication 10 minutes Evidence: high

Author Information

Author(s): Yang Decheng, Wang Nan, Du Bingchen, Sun Zhenzhao, Wang Shida, He Xijun, Wang Jinyue, Zheng Tao, Chen Yutao, Wang Xiangxi, Wang Jingfei

Primary Institution: State Key Laboratory for Animal Disease Control and Prevention & National Data Center for Animal Infectious Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People’s Republic of China

Hypothesis

The study investigates the specific binding mechanisms of the very low-density lipoprotein receptor (VLDLR) to Semliki Forest Virus (SFV) and how this facilitates viral entry into host cells.

Conclusion

The study reveals that specific domains of VLDLR bind to SFV, promoting its attachment and entry into cells, which has implications for antiviral drug design.

Supporting Evidence

  • The study identified that only specific LA repeats of VLDLR bind to SFV.
  • Binding assays showed that LA3 and LA5 significantly inhibit SFV infection.
  • Mutagenesis studies confirmed key residues involved in the binding of VLDLR to SFV.

Takeaway

The virus that causes Semliki Forest disease uses a special receptor on our cells to get inside, and understanding how it does this can help us create better medicines to fight it.

Methodology

The study utilized cryo-electron microscopy and mutagenesis studies to analyze the binding of VLDLR to SFV.

Limitations

The study may not account for all potential receptor interactions or variations in different cell types.

Statistical Information

P-Value

p<0.0001

Statistical Significance

p<0.0001

Digital Object Identifier (DOI)

10.1371/journal.ppat.1012770

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