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Preventive immunization against HIV-1 infection requires a rapid immune response that does not rely exclusively on B or T cell memory. Innate immunity may fulfill this function as it may be activated directly at the time of HIV-1 transmission, inhibit early HIV-1 replication, stimulate adaptive immunity and enable specific antibodies followed by CD8 + T cells to deal with the virus effectively...
Cell-surface CCR5 is a major coreceptor with CD4 glycoprotein, mediating cellular entry of CCR5 strains of HIV-1 or SIV. We targeted the SIV CCR5 coreceptor in a combined CCR5–SIV antigen immunization strategy. Rhesus macaques were immunized i.m. with the 70kDa heat shock protein (HSP70) covalently linked to the CCR5 peptides, SIV gp120 and p27. Intravenous challenge with SIVmac 8980 prevented SIV...
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