Abstract
The mouse lens capsular injury model has been widely used in investigating the mechanisms of anterior subcapsular cataract (ASC) and posterior capsule opacification (PCO), and evaluating the efficacy of antifibrotic compounds. Nevertheless, there is no available protocol to quantitatively assess the treatment outcomes. Our aim is to describe a new method that can successfully quantify the wound and epithelial-mesenchymal transition (EMT) markers expression in vivo. In this model, lens anterior capsule was punctured with a hypodermic needle, which triggered lens epithelial cells (LECs) proliferation and EMT rapidly. Immunofluorescent staining of injured lens anterior capsule whole-mounts revealed the formation of ASC and high expression of EMT markers in the subcapsular plaques. A series of sectional images of lens capsule were acquired from laser scanning confocal microscopy (LSCM) three-dimensional (3D) scanning. Using LSCM Image Browser software, we can not only obtain high resolution stereo images to present the spatial structures of ASC, but also quantify the subcapsular plaques and EMT markers distribution sucessfully. Moreover, we also demonstrated that histone deacetylases (HDACs) inhibitor TSA significantly prevented injury-induced ASC using this method. Therefore, the present research provides a useful tool to study ASC and PCO biology as well as the efficacy of new therapies.
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