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Published on: September 27, 2014
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HSPA5 is an essential host factor for Ebola virus infection
St Patrick Reid1, Amy C Shurtleff1, Julie A Costantino1
1United States Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, Frederick, MD 21702-5011, USA.
Antiviral Research
|July 15, 2014
Summary
Novel strategies are needed against ebolaviruses. Targeting the host protein HSPA5 with inhibitors like EGCG proved essential for virus infection, offering a new approach for countermeasures.
Area of Science:
- Virology
- Molecular Biology
- Immunology
Background:
- Ebolaviruses are highly virulent, necessitating new therapeutic strategies.
- Host-associated proteins are increasingly recognized as potential targets for antiviral therapies.
Purpose of the Study:
- To investigate the role of the ER chaperone HSPA5 in ebolavirus infection.
- To evaluate HSPA5 as a potential therapeutic target for ebolavirus countermeasures.
Main Methods:
- Proteomic analysis to identify ebolavirus-associated host proteins.
- Inhibition of HSPA5 using (-)-epigallocatechin gallate (EGCG).
- In vitro and in vivo gene targeting of HSPA5.
Main Results:
- HSPA5 was identified as an ebolavirus-associated host protein.
- Inhibition of HSPA5 with EGCG demonstrated its essentiality for virus infection.
- Gene targeting of HSPA5 impaired viral replication and protected animals in a lethal infection model.
Conclusions:
- HSPA5 is vital for ebolavirus replication.
- HSPA5 represents a viable host-based target for developing novel antiviral countermeasures against ebolaviruses.
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