title: Synergistic efficacy of combination of enfuvirtide and sifuvirtide, the first- and next-generation HIV-fusion inhibitors.
abstract: Enfuvirtide and sifuvirtide, the first- and next-generation HIV-fusion inhibitors, contain different functional domains and have distinct target sites. Here, we found that a combination of enfuvirtide and sifuvirtide resulted in potent synergism in inhibiting HIV-1-mediated cell-cell fusion and infection by X4 and R5 as well as enfuvirtide-resistant HIV-1 strains. These findings suggest that application of enfuvirtide and sifuvirtide in combination may improve their efficacy and resistant profile, leading to a reduction of the dosage and frequency of drug use.
authors.affiliation: Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA.
authors.forename: Chungen
authors.initials: C
authors.lastname: Pan
authors.forename: Hong
authors.initials: H
authors.lastname: Lu
authors.forename: Zhi
authors.initials: Z
authors.lastname: Qi
authors.forename: Shibo
authors.initials: S
authors.lastname: Jiang
mesh_terms: D004353:Drug Evaluation, Preclinical / Q000379:methods; D004357:Drug Synergism; D000077560:Enfuvirtide; D015700:HIV Envelope Protein gp41 / Q000494:pharmacology*; D023581:HIV Fusion Inhibitors / Q000494:pharmacology*; D015497:HIV-1 / Q000187:drug effects* / Q000502:physiology; D006801:Humans; D008561:Membrane Fusion / Q000187:drug effects; D010446:Peptide Fragments / Q000494:pharmacology*; D010455:Peptides / Q000494:pharmacology*
chemical_list: D015700:HIV Envelope Protein gp41; D023581:HIV Fusion Inhibitors; D010446:Peptide Fragments; D010455:Peptides; D000077560:Enfuvirtide; C505768:sifuvirtide