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MAb ID	DH270.3 (DH391)
HXB2 Location	Env	Env Epitope Map
Author Location	gp120
Epitope
Subtype	C
Ab Type	gp120 V3 // V3 glycan (V3g)
Neutralizing	P (tier 2) View neutralization details
Species (Isotype)	human(IgG)
Patient	CH848
Immunogen	HIV-1 infection
Country	Malawi
Keywords	antibody binding site, antibody generation, antibody lineage, antibody sequence, autologous responses, binding affinity, broad neutralizer, neutralization, structure

Notes

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This patent application states that DH391 is also referred to as DH270.3. Lam2017
DH270.3: The study isolated 3 new V3-glycan antibody lineages (DH270, DH272, DH475) from donor CH848, who was followed for 5 years starting from the time of transmission. The DH272 and DH475 lineages had neutralization patterns that likely selected for observed viral escape variants, which, in turn, stimulated the DH270 lineage to potent neutralization breadth. DH270 antibodies were recovered from memory B cells at all three sampling times (weeks 205, 232, and 234 post-infection). Clonal expansion occurred at week 186, concurrent with the development of plasma neutralization breadth. Like some previously-characterized Abs (PGT124, PGT128, PGT135), the DH270 lineage mAbs bound to Env N332, and their neutralization was reduced or abrogated by mutation of this residue. Bonsignori2017 (antibody binding site, antibody generation, autologous responses, neutralization, binding affinity, antibody sequence, structure, antibody lineage, broad neutralizer)

References

Showing 2 of 2 references.

Isolation Paper
Bonsignori2017 Mattia Bonsignori, Edward F. Kreider, Daniela Fera, R. Ryan Meyerhoff, Todd Bradley, Kevin Wiehe, S. Munir Alam, Baptiste Aussedat, William E. Walkowicz, Kwan-Ki Hwang, Kevin O. Saunders, Ruijun Zhang, Morgan A. Gladden, Anthony Monroe, Amit Kumar, Shi-Mao Xia, Melissa Cooper, Mark K. Louder, Krisha McKee, Robert T. Bailer, Brendan W. Pier, Claudia A. Jette, Garnett Kelsoe, Wilton B. Williams, Lynn Morris, John Kappes, Kshitij Wagh, Gift Kamanga, Myron S. Cohen, Peter T. Hraber, David C. Montefiori, Ashley Trama, Hua-Xin Liao, Thomas B. Kepler, M. Anthony Moody, Feng Gao, Samuel J. Danishefsky, John R. Mascola, George M. Shaw, Beatrice H. Hahn, Stephen C. Harrison, Bette T. Korber, and Barton F. Haynes. Staged Induction of HIV-1 Glycan-Dependent Broadly Neutralizing Antibodies. Sci. Transl. Med., 9(381), 15 Mar 2017. PubMed ID: 28298420. Show all entries for this paper.

Lam2017 C. Y. K. Lam, J. L. Nordstrom, B. F. Haynes, and M. Bonsignori. Bispecific Molecules Comprising an HIV-1 Envelope Targeting Arm. WIPO patent application, Jan 2017. URL: https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2017011414. Application number: PCT/US2016/041809. Show all entries for this paper.