Prophylactic monoclonal antibodies against respiratory syncytial virus in early life: An in-depth review of mechanisms of action, failure factors, and future perspectives
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View abstract on PubMed
Summary
This summary is machine-generated.New long-acting monoclonal antibodies (mAbs) like nirsevimab offer single-dose protection against respiratory syncytial virus (RSV), shifting prevention to universal infant immunization and reducing hospitalizations.
Area Of Science
- Immunology
- Virology
- Pediatric Infectious Diseases
Background
- Respiratory syncytial virus (RSV) causes significant global childhood illness, with palivizumab previously being the sole prophylactic option for high-risk infants.
- Limited duration and high cost of palivizumab restricted its use, necessitating advanced prevention strategies.
Purpose Of The Study
- To review the molecular and immunological basis of novel long-acting monoclonal antibodies (mAbs) for RSV prophylaxis.
- To evaluate real-world evidence of these new mAbs and explore future therapeutic directions.
Main Methods
- Review of structural virology and antibody engineering advancements.
- Analysis of clinical trial and real-world implementation data for nirsevimab and clesrovimab.
- Exploration of immunological frontiers including breakthrough infections and immune imprinting.
Main Results
- Long-acting mAbs (nirsevimab, clesrovimab) provide single-dose seasonal RSV protection, enabling universal infant immunization.
- Real-world data show significant reductions in RSV hospitalizations, with favorable safety profiles.
- Novel antibodies target the pre-fusion conformation of the RSV fusion (F) protein.
Conclusions
- The shift to universal infant immunization with long-acting mAbs marks a significant advancement in RSV prevention.
- Future challenges include managing breakthrough infections, understanding immune imprinting, and preventing viral evolution.
- Genomic surveillance and host immunity research are vital for maintaining long-term efficacy of RSV prophylaxis.
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