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Displaying record number 2635

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MAb ID	PGT121 (PGT-121)
HXB2 Location	Env	Env Epitope Map
Author Location
Epitope	(Discontinuous epitope)
Subtype	A
Ab Type	gp120 V3 // V3 glycan (V3g)
Neutralizing	P View neutralization details
Contacts and Features	View contacts and features
Species (Isotype)	human(IgG)
Patient	Donor 17
Immunogen	HIV-1 infection
Keywords	ADCC, binding affinity

Notes

Showing 3 matching of 107 total notes.

PGT121: This study assessed the ADCC activity of antibodies of varied binding types, including CD4bs (b6, b12, VRC01, PGV04, 3BNC117), V2 (PG9, PG16), V3 (PGT126, PGT121, 10-1074), oligomannose (2G12), MPER (2F5, 4E10, 10E8), CD4i (17b, X5), C1/C5 (A32, C11), cluster I (240D, F240), and cluster II (98-6, 126-7). ADCC activity was correlated with binding to Env on the surfaces of virus-infected cells. ADCC was correlated with neutralization, but not always for lab-adapted viruses such as HIV-1 NLA-3. vonBredow2016 (ADCC)
PGT121: A panel of antibodies was tested for binding, stability, and ADCC activity on HIV-infected cells. The differences in killing efficiency were linked to changes in binding of the antibody and the accessibility of the Fc region when bound to infected cells. Ab PGT121 had strong ADCC. Bruel2016 (ADCC, binding affinity)
PGT121: A highly conserved mechanism of exposure of ADCC epitopes on Env is reported, showing that binding of Env and CD4 within the same HIV-1 infected cell effectively exposes these epitopes. The mechanism might explain the evolutionary advantage of downregulation of cell surface CD4v by the Vpu and Nef proteins. PGT121 was used in CD4 coexpression and competitive binding assay. Veillette2014 (ADCC)

References

Showing 3 matching of 108 total references.

Bruel2016 Timothée Bruel, Florence Guivel-Benhassine, Sonia Amraoui, Marine Malbec, Léa Richard, Katia Bourdic, Daniel Aaron Donahue, Valérie Lorin, Nicoletta Casartelli, Nicolas Noël, Olivier Lambotte, Hugo Mouquet, and Olivier Schwartz. Elimination of HIV-1-Infected Cells by Broadly Neutralizing Antibodies. Nat. Commun., 7:10844, 3 Mar 2016. PubMed ID: 26936020. Show all entries for this paper.

Veillette2014 Maxime Veillette, Anik Désormeaux, Halima Medjahed, Nour-Elhouda Gharsallah, Mathieu Coutu, Joshua Baalwa, Yongjun Guan, George Lewis, Guido Ferrari, Beatrice H. Hahn, Barton F. Haynes, James E. Robinson, Daniel E. Kaufmann, Mattia Bonsignori, Joseph Sodroski, and Andres Finzi. Interaction with Cellular CD4 Exposes HIV-1 Envelope Epitopes Targeted by Antibody-Dependent Cell-Mediated Cytotoxicity. J. Virol., 88(5):2633-2644, Mar 2014. PubMed ID: 24352444. Show all entries for this paper.

vonBredow2016 Benjamin von Bredow, Juan F. Arias, Lisa N. Heyer, Brian Moldt, Khoa Le, James E. Robinson, Susan Zolla-Pazner, Dennis R. Burton, and David T. Evans. Comparison of Antibody-Dependent Cell-Mediated Cytotoxicity and Virus Neutralization by HIV-1 Env-Specific Monoclonal Antibodies. J. Virol., 90(13):6127-6139, 1 Jul 2016. PubMed ID: 27122574. Show all entries for this paper.