|Title||Priming HIV-1 broadly neutralizing antibody precursors in human Ig loci transgenic mice.|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||Sok D, Briney B, Jardine JG, Kulp DW, Menis S, Pauthner M, Wood A, Lee E-C, Le KM, Jones M, Ramos A, Kalyuzhniy O, Adachi Y, Kubitz M, Macpherson S, Bradley A, Friedrich GA, Schief WR, Burton DR|
A major obstacle to a broadly neutralizing antibody (bnAb)-based HIV vaccine is the activation of appropriate B cell precursors. Germline-targeting immunogens must be capable of priming rare bnAb precursors in the physiological setting. We tested the ability of the VRC01-class bnAb germline-targeting immunogen eOD-GT8 60mer (60-subunit self-assembling nanoparticle) to activate appropriate precursors in mice transgenic for human immunoglobulin (Ig) loci. Despite an average frequency of, at most, about one VRC01-class precursor per mouse, we found that at least 29% of singly immunized mice produced a VRC01-class memory response, suggesting that priming generally succeeded when at least one precursor was present. The results demonstrate the feasibility of using germline targeting to prime specific and exceedingly rare bnAb-precursor B cells within a humanlike repertoire.
|Grant List||P01 AI094419 / AI / NIAID NIH HHS / United States |
UM1 AI100663 / AI / NIAID NIH HHS / United States
Priming HIV-1 broadly neutralizing antibody precursors in human Ig loci transgenic mice.