tetano
Editor, Senior Moderator
Virology. 2011 Feb 23. [Epub ahead of print]
Comparison of the receptor binding properties of contemporary swine isolates and early human pandemic H1N1 isolates (Novel 2009 H1N1).
Bradley KC, Jones CA, Tompkins SM, Tripp RA, Russell RJ, Gramer MR, Heimburg-Molinaro J, Smith DF, Cummings RD, Steinhauer DA.
Department of Microbiology and Immunology, Emory University School of Medicine, 1510 Clifton Rd, Atlanta, GA 30322, USA.
Abstract
We have utilized glycan microarray technology to determine the receptor binding properties of early isolates from the recent 2009 H1N1 human pandemic (pdmH1N1), and compared them to North American swine influenza isolates from the same year, as well as past seasonal H1N1 human isolates. We showed that the pdmH1N1 strains, as well as the swine influenza isolates examined, bound almost exclusively to glycans with α2,6-linked sialic acid with little binding detected for α2,3-linked species. This is highlighted by pair-wise comparisons between compounds with identical glycan backbones, differing only in the chemistry of their terminal linkages. The overall similarities in receptor binding profiles displayed by pdmH1N1 strains and swine isolates indicate that little or no adaptation appeared to be necessary in the binding component of HA for transmission from pig to human, and subsequent human to human spread.
Copyright ? 2011 Elsevier Inc. All rights reserved.
PMID: 21353280 [PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21353280
Comparison of the receptor binding properties of contemporary swine isolates and early human pandemic H1N1 isolates (Novel 2009 H1N1).
Bradley KC, Jones CA, Tompkins SM, Tripp RA, Russell RJ, Gramer MR, Heimburg-Molinaro J, Smith DF, Cummings RD, Steinhauer DA.
Department of Microbiology and Immunology, Emory University School of Medicine, 1510 Clifton Rd, Atlanta, GA 30322, USA.
Abstract
We have utilized glycan microarray technology to determine the receptor binding properties of early isolates from the recent 2009 H1N1 human pandemic (pdmH1N1), and compared them to North American swine influenza isolates from the same year, as well as past seasonal H1N1 human isolates. We showed that the pdmH1N1 strains, as well as the swine influenza isolates examined, bound almost exclusively to glycans with α2,6-linked sialic acid with little binding detected for α2,3-linked species. This is highlighted by pair-wise comparisons between compounds with identical glycan backbones, differing only in the chemistry of their terminal linkages. The overall similarities in receptor binding profiles displayed by pdmH1N1 strains and swine isolates indicate that little or no adaptation appeared to be necessary in the binding component of HA for transmission from pig to human, and subsequent human to human spread.
Copyright ? 2011 Elsevier Inc. All rights reserved.
PMID: 21353280 [PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21353280