Browsing by Author "Derdeyn, Cynthia A."
Now showing 1 - 2 of 2
- Results Per Page
- Sort Options
Item Characterization of anti-HIV-1 neutralizing and binding antibodies in chronic HIV-1 subtype C infection.(Elsevier., 2012) Archary, Derseree.; Rong, Rong.; Gordon, Michelle Lucille.; Boliar, Saikat.; Madiga, Maphuti C.; Gray, Elin Solomonovna.; Dugast, Anne-Sophie.; Hermanus, Tandile.; Goulder, Philip Jeremy Renshaw.; Coovadia, Hoosen Mahomed.; Werner, Lise.; Morris, Lynn.; Alter, Galit.; Derdeyn, Cynthia A.; Ndung'u, Peter Thumbi.Neutralizing (nAbs) and high affinity binding antibodies may be critical for an efficacious HIV-1 vaccine. We characterized virus-specific nAbs and binding antibody responses over 21 months in eight HIV-1 subtype C chronically infected individuals with heterogeneous rates of disease progression. Autologous nAb titers of study exit plasma against study entry viruses were significantly higher than contemporaneous responses at study entry (p=0.002) and exit (p=0.01). NAb breadth and potencies against subtype C viruses were significantly higher than for subtype A (p=0.03 and p=0.01) or B viruses (p=0.03; p=0.05) respectively. Gp41-IgG binding affinity was higher than gp120-IgG (p=0.0002). IgG–FcγR1 affinity was significantly higher than FcγRIIIa (p<0.005) at study entry and FcγRIIb (p<0.05) or FcγRIIIa (p<0.005) at study exit. Evolving IgG binding suggests alteration of immune function mediated by binding antibodies. Evolution of nAbs was a potential marker of HIV-1 disease progression.Item Development of broadly neutralizing antibodies from autologous neutralizing antibody responses.(Lippincott Williams & Wilkins., 2014) Derdeyn, Cynthia A.; Moore, Penelope L.; Morris, Lynn.Abstract available in pdf.