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Genetics and Genome Biology Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada.
Highly pathogenic avian influenza (HPAI) A(H5N1) strains have been causing sporadic cases of disease in South East Asia and Africa for many years. These cases are associated with a high fatality rate, and it is feared that the virus could evolve into a strain capable of causing a pandemic. It is likely that a requirement for a A(H5) pandemic to occur is a switch in the receptor affinity of the virus. Candidate mutations in the hemagglutinin glycoprotein have been identified in the literature, and their emergence in circulating viruses would be an ominous development. This study describes a method to identify the presence of these mutations, even within a quasispecies, using RT-PCR followed by in vitro translation and peptide characterization by MALDI-TOF mass spectrometry.
Copyright © 2011 Elsevier B.V. All rights reserved.
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