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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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The comprehensive SARS-CoV-2 'hijackome' knowledge base.

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This study reveals how SARS-CoV-2 variants (VOCs) alter host cell proteomes, impacting disease mechanisms. Understanding these variant-specific protein changes aids in developing targeted antiviral therapies against evolving viruses.

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Area of Science:

  • Virology
  • Proteomics
  • Molecular Biology

Background:

  • SARS-CoV-2 continuously evolves, generating Variants of Concern (VOCs) that pose significant global health challenges.
  • Understanding the molecular mechanisms by which VOCs interact with host cells is crucial for effective disease management.

Purpose of the Study:

  • To investigate the proteome-level alterations in host cells induced by different SARS-CoV-2 VOCs.
  • To elucidate variant-specific adaptations and their impact on viral-host protein interactions.

Main Methods:

  • Comparative proteomic and phosphoproteomic analysis of host cells infected with Alpha, Beta, Delta, and Omicron BA.1/BA.5 variants.
  • Proximity biotinylation mass spectrometry (BioID-MS) to identify variant-specific viral-host protein interactions.

Main Results:

  • Distinct temporal proteomic and phosphoproteomic dynamics were observed across different SARS-CoV-2 VOCs.
  • Enhanced expression and activation of host pathways, including RHO GTPase cycle, RNA splicing, and ERAD, were identified.
  • Variant-specific viral-host interactomes revealed how mutations influence viral protein functionality.

Conclusions:

  • The study provides detailed proteomic profiles for each VOC, highlighting variant-specific host cell adaptations.
  • Understanding these molecular interactions is key for identifying new therapeutic targets.
  • These findings support the development of more effective antiviral strategies against emerging SARS-CoV-2 variants.