Journal: Cell Discovery
Article Title: A potent and broad CD4 binding site neutralizing antibody with strong ADCC activity from a Chinese HIV-1 elite neutralizer
doi: 10.1038/s41421-025-00808-x
Figure Lengend Snippet: a , b Neutralization potency ( a ) and breadth ( b ) of FD22, in comparison with VRC01, against a 145-isolate Env-pseudovirus panel. c , d The neutralization activity ( c ) and percentage ( d ) of FD22 were evaluated against different clades of HIV-1 pseudoviruses from a 145-virus panel, including the two predominant circulating strains in China, CRF01_AE and CRF07_BC. VRC01 served as a control. e Activation of HIV-1 latency in ACH-2 cells. HIV-1 latency reversal in ACH-2 cells was induced by treatment with TNF-α or panobinostat for 48 h. Viral reactivation was assessed by quantifying p24 antigen concentrations using a standardized ELISA. f Inhibitory activity of FD22 against latent HIV-1 in ACH-2 cells activated by TNF-α or panobinostat, as measured in TZM-bl cells. ACH-2 cells were treated with TNF-α (10 ng/mL) or panobinostat (1 μM) to induce HIV-1 reactivation. After activation, FD22 was added at various concentrations to assess its inhibitory activity. Reactivated virus production was measured by coculturing supernatants from treated ACH-2 cells with TZM-bl indicator cells.
Article Snippet: Rabbit polyclonal anti-Gag-p24 antibodies (Sino Biological Inc.) were used to coat ELISA plates.
Techniques: Neutralization, Comparison, Activity Assay, Virus, Control, Activation Assay, Enzyme-linked Immunosorbent Assay