AMP antibiofilm
activity in the presence of CF sputum. PAO1 was
grown on a slide chamber with the sputum supernatant [10% (v/v)] for
48 h prior to exposure to a concentration of 10 μM for 1 h.
Biofilms were stained with a live/dead cell kit for 1 h prior to fluorescence
imaging: (A) untreated sample, (B) LL-37, (C) Seg5D, (D) Seg6D, and
(E) Amp1D. Images were taken using an Olympus FV1000 confocal microscope
[60× objective lens (oil), 10 μm scale bars]. (F) Biofilm
viability according to fluorescence intensity. Data were analyzed
using Olympus Fluoview (version 4.1) and ImageJ. (G) The viability
of biofilms was checked using resazurin. The statistical significance
from untreated biofilm was determined by ANOVA.