Browsing by Author "Schramm, Chaim A."

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Developmental pathway for potent V1V2-directed HIV-neutralizing antibodies.
(Macmillan Publishers Limited., 2014) Doria-Rose, Nicole A.; Schramm, Chaim A.; Gorman, Jason.; Moore, Penelope L.; Bhiman, Jinal N.; DeKosky, Brandon J.; Ernandes, Michael J.; Georgiev, Ivelin S.; Kim, Helen J.; Pancera, Marie.; Staupe, Ryan P.; Altae-Tran, Han R.; Bailer, Robert T.; Crooks, Ema T.; Druz, Aliaksandr.; Garrett, Nigel Joel.; Hoi, Kam H.; Kong, Rui.; Louder, Mark K.; Longo, Nancy S.; McKee, Krisha.; Nonyane, Molati.; O’Dell, Sijy.; Roark, Ryan S.; Rudicell, Rebecca S.; Schmidt, Stephen D.; Sheward, Daniel J.; Soto, Cinque.; Wibmer, Constantinos Kurt.; Yang, Yongping.; Zhang, Zhenhai.; Mullikin, James C.; Binley, James M.; Sanders, Rogier W.; Wilson, Ian A.; Moore, John P.; Ward, Andrew B.; Georgiou, George.; Williamson, Carolyn.; Abdool Karim, Salim Safurdeen.; Morris, Lynn.; Kwong, Peter D.; Shapiro, Lawrence.; Mascola, John R.
Antibodies capable of neutralizing HIV-1 often target variable regions 1 and 2 (V1V2) of the HIV-1 envelope, but the mechanism of their elicitation has been unclear. Here we define the developmental pathway by which such antibodies are generated and acquire the requisite molecular characteristics for neutralization. Twelve somatically related neutralizing antibodies (CAP256-VRC26.01-12) were isolated from donor CAP256 (from the Centre for the AIDS Programme of Research in South Africa (CAPRISA)); each antibody contained the protruding tyrosine-sulphated, anionic antigen-binding loop (complementarity-determining region (CDR) H3) characteristic of this category of antibodies. Their unmutated ancestor emerged between weeks 30-38 post-infection with a 35-residue CDR H3, and neutralized the virus that superinfected this individual 15 weeks after initial infection. Improved neutralization breadth and potency occurred by week 59 with modest affinity maturation, and was preceded by extensive diversification of the virus population. HIV-1 V1V2-directed neutralizing antibodies can thus develop relatively rapidly through initial selection of B cells with a long CDR H3, and limited subsequent somatic hypermutation. These data provide important insights relevant to HIV-1 vaccine development.
New member of the V1V2-directed CAP256-VRC26 lineage that shows increased breadth and exceptional potency.
(American Society for Microbiology., 2016) Doria-Rose, Nicole A.; Bhiman, Jinal N.; Roark, Ryan S.; Schramm, Chaim A.; Gorman, Jason.; Chuang, Gwo-Yu.; Pancera, Marie.; Cale, Evan M.; Ernandes, Michael J.; Louder, Mark K.; Asokan, Mangaiarkarasi.; Bailer, Robert T.; Druz, Aliaksandr.; Fraschilla, Isabella R.; Garrett, Nigel Joel.; Jarosinski, Marissa.; Lynch, Rebecca M.; McKee, Krisha.; O’Dell, Sijy.; Pegu, Amarendra.; Schmidt, Stephen D.; Staupe, Ryan P.; Sutton, Matthew S.; Wang, Keyun.; Wibmer, Constantinos Kurt.; Haynes, Barton F.; Abdool Karim, Salim Safurdeen.; Shapiro, Lawrence.; Kwong, Peter D.; Moore, Penelope L.; Morris, Lynn.; Mascola, John R.
Abstract available in pdf.
Sequencing HIV-neutralizing antibody exons and introns reveals detailed aspects of lineage maturation.
(Nature Publishing Group., 2018) Johnson, Erik L.; Doria-Rose, Nicole A.; Gorman, Jason.; Bhiman, Jinal N.; Schramm, Chaim A.; Vu, Ashley Q.; Law, William H.; Zhang, Baoshan.; Bekker, Valerie.; Abdool Karim, Salim Safurdeen.; Ippolito, Gregory C.; Morris, Lynn.; Moore, Penelope L.; Kwong, Peter D.; Mascola, John R.; Georgiou, George.
Abstract available in pdf.
Viral variants that initiate and drive maturation of V1V2-directed HIV-1 broadly neutralizing antibodies.
(Nature Publishing Group., 2015) Bhiman, Jinal N.; Anthony, Colin S.; Doria-Rose, Nicole A.; Karimanzira, Owen.; Schramm, Chaim A.; Khoza, Thandeka.; Kitchin, Dale.; Botha, Gordon.; Gorman, Jason.; Garrett, Nigel Joel.; Abdool Karim, Salim Safurdeen.; Shapiro, Lawrence.; Williamson, Carolyn.; Kwong, Peter D.; Mascola, John R.; Morris, Lynn.; Moore, Penelope L.
Abstract available in pdf.