id author title date pages extension mime words sentences flesch summary cache txt cord-001074-qevosik3 Selvarajah, Suganya A Neutralizing Monoclonal Antibody Targeting the Acid-Sensitive Region in Chikungunya Virus E2 Protects from Disease 2013-09-12 .txt text/plain 7613 359 50 C9 was determined to be a potent virus neutralizing antibody and a biosensor antibody binding study demonstrated it recognized residues on intact CHIKV VLPs. Shotgun mutagenesis alanine scanning of 98 percent of the residues in the E1 and E2 glycoproteins of CHIKV envelope showed that the epitope bound by C9 included amino-acid 162 in the acid-sensitive region (ASR) of the CHIKV E2 glycoprotein. The neutralizing epitope bound by C9 mapped to the acid-sensitive region (ASR) that is critical for the rearrangement of CHIKV E2 during fusion and viral entry into host cells. Therefore, C9 is a potent neutralizing antibody that can therapeutically protect wild-type neonate mice from a lethal dose of virus at 8 and 18 hours post CHIKV inoculation. This study describes the isolation and characterization of two human monoclonal antibodies, C9 and E8, from CHIKV infected and recovered individuals. ./cache/cord-001074-qevosik3.txt ./txt/cord-001074-qevosik3.txt