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Host Manipulation Mechanisms of SARS-CoV-2
1Biology Department, University of Puerto Rico - Rio Piedras, San Juan, PR, USA. stevenemassey@gmail.com.
Acta Biotheoretica
|December 13, 2021
Summary
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) uses its spike protein to bind host cell receptor neuropilin-1, mimicking endogenous ligands. This binding aids cell entry and may reduce host sickness behavior.
Area of Science:
- Virology
- Molecular Biology
- Evolutionary Biology
Background:
- Viruses employ molecular mimicry to manipulate host behavior.
- Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) utilizes the host receptor neuropilin-1 for cell entry.
- The SARS-CoV-2 spike protein's polybasic cleavage site (PCS) mimics the CendR motif of neuropilin-1 ligands.
Purpose of the Study:
- To investigate the impact of SARS-CoV-2 binding to neuropilin-1 on host sickness behavior.
- To identify convergent evolutionary strategies in viral manipulation of host responses.
- To explore the evolutionary acquisition of the PCS in SARS-CoV-2 ancestors.
Main Methods:
- Comparative analysis of viral spike protein structures and host receptor interactions.
- Review of existing literature on viral pathogenesis and host manipulation.
- Discussion of evolutionary pathways and their functional consequences.
Main Results:
- SARS-CoV-2 binding to neuropilin-1 facilitates cell entry and may produce analgesic effects.
- Convergent evolution of PCS cleavage and neuropilin binding observed in other viruses.
- Acquisition of PCS in SARS-CoV-2 ancestors provided pleiotropic benefits, including enhanced cell entry and analgesia.
Conclusions:
- SARS-CoV-2 employs sophisticated neuromanipulation strategies, including neuropilin-1 binding, to influence host behavior and enhance its own propagation.
- Understanding these mechanisms offers insights into viral evolution and pathogenesis.
- Further research into viral-host interactions can reveal novel therapeutic targets.
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