Impact of stabilizing mutations on the antigenic profile and glycosylation of membrane-expressed HIV-1 envelope glycoprotein

T Tong, A D'Addabbo, J Xu, H Chawla… - PLoS …, 2023 - journals.plos.org
Recent HIV-1 vaccine development has centered on “near native” soluble envelope
glycoprotein (Env) trimers that are artificially stabilized laterally (between protomers) and …

V3 tip determinants of susceptibility to inhibition by CD4-mimetic compounds in natural clade A human immunodeficiency virus (HIV-1) envelope glycoproteins

S Anang, S Zhang, C Fritschi, TJ Chiu, D Yang… - Journal of …, 2023 - Am Soc Microbiol
ABSTRACT CD4-mimetic compounds (CD4mcs) bind the human immunodeficiency virus
(HIV-1) gp120 exterior envelope glycoprotein (Env) and compete for binding to CD4, the …

Global increases in human immunodeficiency virus neutralization sensitivity due to alterations in the membrane-proximal external region of the envelope glycoprotein …

Q Wang, F Esnault, M Zhao, TJ Chiu… - Journal of …, 2022 - Am Soc Microbiol
Binding to the receptor, CD4, drives the pretriggered,“closed”(State-1) conformation of the
human immunodeficiency virus (HIV-1) envelope glycoprotein (Env) trimer ([gp120/gp41] 3) …

Engineering well-expressed, V2-immunofocusing HIV-1 envelope glycoprotein membrane trimers for use in heterologous prime-boost vaccine regimens

ET Crooks, F Almanza, A D'addabbo, E Duggan… - PLoS …, 2021 - journals.plos.org
HIV-1 vaccine immunofocusing strategies may be able to induce broadly-reactive
neutralizing antibodies (NAbs). Here, we engineered a panel of diverse, membrane-resident …

Subtle longitudinal alterations in Env sequence potentiate differences in sensitivity to broadly neutralizing antibodies following acute HIV-1 subtype C infection

T Mandizvo, N Gumede, B Ndlovu, S Ndlovu… - Journal of …, 2022 - Am Soc Microbiol
Broadly neutralizing antibodies (bNAbs) for HIV-1 prevention or cure strategies must inhibit
transmitted/founder and reservoir viruses. Establishing sensitivity of circulating viruses to …

The endoplasmic reticulum proteostasis network profoundly shapes the protein sequence space accessible to HIV envelope

J Yoon, EE Nekongo, JE Patrick, T Hui, AM Phillips… - Plos …, 2022 - journals.plos.org
The sequence space accessible to evolving proteins can be enhanced by cellular
chaperones that assist biophysically defective clients in navigating complex folding …

Regulation of epitope exposure in the gp41 membrane-proximal external region through interactions at the apex of HIV-1 Env

HM Schapiro, MD Khasnis, K Ahn, A Karagiaridi… - PLoS …, 2022 - journals.plos.org
Glycoprotein Env of human immunodeficiency virus type 1 (HIV-1) mediates viral entry
through membrane fusion. Composed of gp120 and gp41 subunits arranged as a trimer-of …

Impact of Common Modifications on the Antigenic Profile and Glycosylation of Membrane-Expressed HIV-1 Envelope Glycoprotein

T Tong, A D'Addabbo, J Xu, H Chalwa, A Nguyen… - bioRxiv, 2023 - biorxiv.org
Recent HIV-1 vaccine development has centered on “near native” soluble envelope
glycoprotein (Env) trimers. These trimers are artificially stabilized laterally (between …

Variations in Env at amino acids 328 and 330 affect HIV-1 replicative fitness and entry inhibitor sensitivity

H Wang, Y Li, Y Li, B Li, X Zhu, D Yan, M Li, W Wu… - Virus Research, 2021 - Elsevier
While the variations in the HIV-1 Env V3 loop have been the focus of much research to
explore its functional effect, how specific mutations of certain amino acids in the V3 loop …

Dissecting How Interactions at the Apex of HIV-1 Env Modulate Epitope Exposure at the Distant Base of the Glycoprotein

HM Schapiro - 2022 - search.proquest.com
The envelope glycoprotein, Env, of human immunodeficiency virus type 1 (HIV-1) mediates
viral entry through membrane fusion. Env is a structurally dynamic trimer consisting of three …