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[Journal of Clinical Investigation -- Current Issue] Journal of Clinical Investigation -- Heterosubtypic neutralizing ...: with 25 or 2.5 mg/kg of FE17, FE43, or a control mAb and were challenged 24 hours later with 50 MLD50 (50% mouse lethal doses) of the following influenza viruses: A/Puerto Rico/8/34 (PR8, H1N1), A/teal/Hong Kong/W312/97 (H6N1), A/Viet Nam/1203/04 (H5N1), A/Indonesia/5/05 (H5N1), or A/Netherlands/219/03 (H7N7). MAb FE43 protected mice from lethal challenge with PR8 at either concentration tested, while FE17 conferred protection in a dose-dependent manner, affording 100% protection in animals that received 25 mg/kg of the antibody and 80% protection in animals that received 2.5 mg/kg (Figure 4A).

[BJ Plant Immediate Publications] Biochem. J. (2009) 419, 133-139 - W. Luo and others - Peptide ...: This was then related to the specificity of the native HA (haemagglutinin) molecule by virtue of the capacity of fusion proteins to compete for 8H5 binding with different strains of H5N1 virus and the reactivity of antisera generated against fusion proteins to bind native HA molecules, and to inhibit haemagglutination and arrest infection by the virus. Nine reactive peptides of different amino acid sequences were identified, six of which were also reactive with the antibody in association with HBc and four were in association with p239.

[The Journal of Immunology current issue] In Vitro Responses to Avian Influenza H5 by Human CD4 T Cells ...: To address the question of whether human T cells are capable of recognizing novel isolates of influenza virus, in vitro responses to recombinant Ags and synthetic peptides derived from the sequences of H1, H3, and H5 were examined in a cohort of 64 individuals selected from a healthy blood donor population. Humans respond in vitro to H1 and H3 following exposure through natural infection and vaccination.

[Virology Journal - Latest Articles] Virology Journal | Full text | Epitope characterization of the ...: In addition, our results indicate that the previous requirements for VN04-2 binding derived from HI assay data may have been due to assay limitations rather than the actual antibody binding and adds to an increasing amount of evidence questioning the usefulness of HI assays as a measure of neutralization, or for epitope mapping. The HA clones described here were representative of the antigenic drift observed during 2005 and 2006 within this antigenic region, and is still the case for H5N1 strains isolated throughout 2007, suggesting that apart from the H5N1 viruses circulating in Indonesia, VN04-2 may provide protection against H5N1 viruses from all other regions.

[BBSRC - Funding opportunities, news and media releases] If pigs had wings; what we know and what we don't know about swine ...: There is evidence, for instance, that just 2 amino acid changes in the H5 haemagglutinin sequence changed the binding specificity for its haemagglutinin sialic acid receptors for cell entry from that of 'avian' flu (i.e. susceptible hosts as birds) to .

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