Ha stalk domain
WebOct 10, 2024 · Mosaic HA is an advanced version, in which major antigenic sites of type B HA head domain were replaced by those of type A HA head so that antibodies directed to conserved regions both in the head and stalk domains of type B HA could be induced (Sun et al., 2024). The mosaic B HA provided broad protection against both lineages of IBV, … WebIn the context of influenza, the B cell response is preferentially induced against the variable epitopes of the hemagglutinin (HA) domain rather than more conserved epitopes of the HA stalk domain. We are investigating the factors that regulate immunodominance and developing tools to shift immunodominance to the HA stalk domain.
Ha stalk domain
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WebAug 13, 2024 · In prior mutational studies of H1 HAs, the stalk domain was found to be substantially less mutationally tolerant than the globular head ( 10, 23, 24, 50 ). We performed a similar analysis using our new data for the Perth/2009 H3 HA. Surprisingly, the head domain of the H3 HA is not more mutationally tolerant than the stalk domain ( Fig. … WebAug 8, 2024 · The HA stalk domain is more conserved between influenza virus strains compared with the HA head domain due to functional constraints and minimal immune …
WebWe found that, whereas some influenza infection–induced mAbs bound conserved and neutralizing epitopes on the hemagglutinin (HA) stalk domain or neuraminidase, most of the mAbs elicited by infection targeted non-neutralizing epitopes on nucleoprotein and other unknown antigens. WebAug 16, 2024 · The conserved hemagglutinin stalk domain is an attractive target for broadly effective antibody-based therapeutics and next-generation universal influenza vaccines. Protection provided by hemagglutinin stalk-binding antibodies is principally mediated through activation of immune effector cells.
WebDec 16, 2011 · Figure 1. Neutralizing antibody binding to hemagglutinin.(A) Gross structure of the hemagglutinin (HA). HA1 (light blue) makes-up most of the globular head domain as well as a polypeptide extension into the stalk area.HA2 (dark blue) makes-up the membrane-proximal stalk domain.(B) Schematized secondary structure of HA stalk …
WebAug 23, 2012 · The stalk domain, which makes up the majority of the amino acid sequence of the HA molecule, mediates virus fusion and uncoating by virtue of the fusion peptide that is located in this domain. Following binding to sialylated host receptors, the virus is internalized by endocytosis.
WebApr 18, 2016 · Significant genetic variability in the head region of the influenza A hemagglutinin, the main target of current vaccines, makes it challenging to develop a long-lived seasonal influenza prophylaxis. Vaccines based on the conserved hemagglutinin stalk domain might provide broader cross-reactive immunity. However, this region of the … the orchard day nursery chellastonWebApr 14, 2015 · This novel construct maintains the conserved influenza HA stalk domain (HA2) but lacks a majority of the globular head (HA1). The headless HA vaccine capitalizes on the conserved regions in HA in … the orchard david wilsonWebBroadly cross-reactive antibodies (Abs) that recognize conserved epitopes within the influenza virus hemagglutinin (HA) stalk domain are of particular interest for their … the orchard digital distributionWebJan 11, 2024 · Epidemic or pandemic influenza can annually cause significant morbidity and mortality in humans. We developed novel chimeric hemagglutinin (cHA)-based universal influenza virus vaccines, which contain a conserved HA stalk domain from a 2009 pandemic H1N1 (pH1N1) strain combined with globular head domains from avian … microfiber fast dry towelsWebHemagglutinin (influenza) Influenza hemagglutinin ( HA) or haemagglutinin[p] ( British English) is a homotrimeric glycoprotein found on the surface of influenza viruses and is integral to its infectivity. Hemagglutinin is a Class I Fusion Protein, having multifunctional activity as both an attachment factor and membrane fusion protein. the orchard day nursery farnboroughWebThe globular head domain was replaced by different linkers to generate a headless HA (stalk domain) and then coexpressed with influenza M1 proteinin Tni insect cells. The … microfiber faux leather sofaWebDec 23, 2024 · The cHA vaccine platform is intended to specifically induce antibodies to the stalk domain by retaining the stalk domain of H1 and replacing the head domain of HA … microfiber flat bar with radiused ends