The COVID-19 (coronavirus disease 2019) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has led to loss of human life in millions and devastating socio-economic consequences worldwide. The disease has created urgent needs for intervention strategies to control the crisis and meeting these needs requires a deep understanding of the structure-function relationships of viral proteins and relevant host factors. The trimeric spike (S) protein of the virus decorates the viral surface and is an important target for development of diagnostics, therapeutics and vaccines. Rapid progress in the structural biology of SARS-CoV-2 S protein has been made since the early stage of the pandemic, advancing our knowledge on the viral entry process considerably. In this review, we summarize our latest understanding of the structure of the SARS-CoV-2 S protein and discuss the implications for vaccines and therapeutics.
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http://dx.doi.org/10.1016/j.coviro.2021.08.010 | DOI Listing |
SARS-CoV-2 nonstructural protein 1 (nsp1) promotes innate immune evasion by inhibiting host translation in human cells. However, the role of nsp1 in other host species remains elusive, especially in bats which are natural reservoirs of sarbecoviruses and possess a markedly different innate immune system than humans. Here, we reveal that SARS-CoV-2 nsp1 potently inhibits translation in bat cells from Rhinolophus lepidus, belonging to the same genus as known sarbecovirus reservoirs hosts.
View Article and Find Full Text PDFPept Sci (Hoboken)
November 2024
Department of Pediatrics, Section of Hematology/Oncology, The University of Chicago, Chicago, Illinois 60637, United States of America.
The COVID-19 pandemic drove a uniquely fervent pursuit to explore the potential of peptide, antibody, protein, and small-molecule based antiviral agents against severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2). The interaction between the SARS-CoV2 spike protein with the angiotensin-converting enzyme 2 (ACE2) receptor that mediates viral cell entry was a particularly interesting target given its well described protein-protein interaction (PPI). This PPI is mediated by an α-helical portion of ACE2 binding to the receptor binding domain (RBD) of the spike protein and thought to be susceptible to blockade through molecular mimicry.
View Article and Find Full Text PDFHeliyon
January 2025
Pediatric Infectious Diseases Unit, Department of Pediatrics, Gregorio Marañón University Hospital, Madrid, Spain.
Objective: The aim of this prospective cohort study is to analyse the humoral and cellular vaccine responses in paediatric heart transplant recipients (HTR, n = 12), and compare it with the response in healthy controls (HC, n = 14). All participants were 5-18 years old and vaccinated with mRNA vaccine against SARS-CoV-2 between December 2021 and May 2022.
Methods: The humoral response was measured by quantifying antibody titers against SARS-CoV-2 spike protein (anti-S).
HRB Open Res
December 2024
Dublin City University, Dublin, Leinster, Ireland.
Background: Breastfeeding rates in Ireland are among the lowest in the world. Lactation consultancy provides mothers with support and information on how to cope with any challenges they encounter. There is emerging evidence that COVID-19 restrictions impacted access to and the quality of breastfeeding support.
View Article and Find Full Text PDFInt Health
January 2025
Instituto Nacional de Saúde, Marracuene district, Maputo Province 0205-02, Mozambique.
Background: To reduce the spread and transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), schools implemented a series of non-pharmacological interventions such as handwashing stations and cleaning protocols. A baseline assessment of the available interventions and readiness scores for SARS-CoV-2 prevention was conducted in primary schools in Maputo City, Mozambique.
Methods: A cross-sectional study was conducted between August and October 2023.
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