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Area of Science:

  • Virology
  • Immunology
  • Structural Biology

Background:

  • The SARS-CoV-2 spike (S) protein is a primary target for neutralizing antibodies.
  • Most known antibodies target the receptor-binding domain (RBD) of the S protein.
  • The N-terminal domain (NTD) of the S protein is another potential target for antibody recognition.

Purpose of the Study:

  • To highlight recent findings on antibodies targeting the SARS-CoV-2 spike protein's N-terminal domain (NTD).
  • To identify protective antibodies that bind to a conserved supersite within the NTD.
  • To shift focus towards alternative antibody targets beyond the RBD.

Main Methods:

  • Review of recent scientific literature (Cerutti et al., 2021; McCallum et al., 2021; Suryadevara et al., 2021).
  • Analysis of antibody specificities against SARS-CoV-2 S protein domains.
  • Identification of conserved epitopes targeted by protective antibodies.

Main Results:

  • Three recent studies report on antibodies with high protective capacity.
  • These antibodies are specific to the N-terminal domain (NTD) of the SARS-CoV-2 S protein.
  • The identified antibodies target a conserved supersite within the NTD.

Conclusions:

  • Antibodies targeting the NTD represent a promising avenue for therapeutic and diagnostic development.
  • The conserved supersite in the NTD is a key target for broadly protective antibodies.
  • Further research into NTD-specific antibodies is warranted for SARS-CoV-2 countermeasures.