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We describe the development and potential use of various designs of recombinant HIV‐1 envelope glycoprotein trimers that mimic the structure of the virion‐associated spike, which is the target for neutralizing antibodies. The goal of trimer development programs is to induce broadly neutralizing antibodies with the potential to intervene against multiple circulating HIV‐1 strains. Among the topics...
Background Recombinant soluble, cleaved HIV-1 envelope glycoprotein SOSIP.664 gp140 trimers based on the subtype A BG505 sequence are being studied structurally and tested as immunogens in animals. For these trimers to become a vaccine candidate for human trials, they would need to be made in appropriate amounts at an acceptable quality. Accomplishing such tasks by transient transfection is likely...
The human immunodeficiency virus type 1 (HIV-1) surface envelope glycoprotein (Env) complex, a homotrimer containing gp120 surface glycoprotein and gp41 transmembrane glycoprotein subunits, mediates the binding and fusion of the virus with susceptible target cells. The Env complex is the target for neutralizing antibodies (NAbs) and is the basis for vaccines intended to induce NAbs. Early generation...
Endoproteolytic processing of the human immunodeficiency virus type 1 (HIV-1) envelope (Env) glycoproteins is an obligate part of the biosynthetic pathway that generates functional, fusion-competent Env complexes, which are then incorporated into infectious virions. We have examined the influence of cleavage on Env-specific antibody reactivity, Env incorporation into pseudovirions, and the infectivity...
We describe the production and properties of a permanent cell line, CEM.NKR-CCR5-Luc. This line is a derivative of the CEM.NKR-CCR5 line, stably transfected to express the luciferase reporter gene under the transcriptional control of the HIV-2 LTR. Thus the cells respond to Tat expression during HIV-1 infection by producing luciferase, a protein that can be readily and accurately quantitated in a...
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