Hair bundle-like structures on Ad-E1 transduced explants.
A: Whole mount utricular explant. Many myosin7A-positive cells
with hair-bundle-like structures on their apical surfaces are observed (e.g.
arrows). B: Sectioned explant. Myosin7A-positive cell bodies are
observed in the supporting cell layer. Hair-bundle-like structures protrude from
extensions of these cells that reach the apical surface of the epithelium (e.g.
arrowhead). Red: Myosin7A; Green: EGFP; Blue: DAPI. C: Number of
hair-bundle-like structures observed after adenoviral transduction. In Ad-GFP
transduced explants, a few damaged stereociliary bundles remained. However, in
Ad-E1 transduced explants, there are many more immature hair bundles. In Ad-E4
transduced explants, some filamentous cilia-like structures are observed. The
number of bundle-like structures in Ad-E1 transduced explants was significantly
greater than in control (Ad-GFP) explants than in Ad-GFP transduced explants (p
< .05, 6–7 explants per group)..