Host-pathogen interactome analysis of Chikungunya virus envelope proteins E1 and E2

Area of Science:

• Virology
• Molecular Biology
• Immunology

Background:

• Chikungunya virus (CHIKV) envelope proteins are vital for viral infection and spread.
• Understanding cellular interactions of CHIKV envelope proteins is crucial for identifying host factors involved in viral pathogenesis.

Purpose of the Study:

• To identify host protein interactors of Chikungunya virus (CHIKV) envelope proteins E1 and E2.
• To elucidate the cellular machinery CHIKV utilizes during infection and immune evasion.

Main Methods:

• High-throughput yeast two-hybrid (Y2H) screening using CHIKV envelope protein ectodomains (E1 and E2).
• Comparative analysis of Y2H data with a computational approach to identify common viral-host protein interactions.
• Independent verification of identified interactions using pull-down assays and protein interaction ELISA.

Main Results:

• Five host proteins interacting with E1 and three host proteins interacting with E2 were identified through combined Y2H and computational screening.
• These interactions were validated independently, confirming their biological relevance.
• The study identified specific host-pathogen interactions critical for CHIKV lifecycle.

Conclusions:

• The identified host protein interactors provide insights into the cellular machinery exploited by CHIKV.
• These findings contribute to understanding CHIKV entry, intracellular trafficking, and immune system evasion mechanisms.
• This research lays the groundwork for developing novel antiviral strategies targeting host-pathogen interactions.