ArticleScientific reports2025
Quantitative spatial analysis of crystallin proteins in human lens epithelial cells.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Resolving spatial protein dynamics in native human epithelial tissues presents a significant technical challenge, particularly in inherently curved or unevenly mounted specimens. Here, we introduce an image processing pipeline for high-resolution, compartment-based analysis of protein localization, using the native three-dimensional architecture of the human anterior lens epithelium and capsule complex as a robust ex vivo proof-of-principle platform for precise cell segmentation and quantitative analysis. This platform integrates whole-mount immunostaining, 3D confocal imaging, computational tissue flattening, digital segmentation, and spatial regression to quantitatively map subcellular protein distributions at the tissue scale. To demonstrate the utility of this approach, we examined the spatial distribution of αB-crystallin (CRYAB), a stress-associated small heat shock protein, and βB2-crystallin (CRYBB2), a predominantly structural lens protein, in specimens obtained during cataract surgery. We observed a marked accumulation of CRYAB in epithelial cells at the capsule edge following both laser and manual capsulorhexis, indicating a localized stress response to surgical intervention. In contrast, CRYBB2 distribution remained unaffected. Furthermore, both proteins exhibited consistent cytoplasmic localization, while only CRYBB2 occasionally showed exclusive nuclear accumulation. This pipeline offers a scalable framework for quantitatively resolving protein localization in native epithelial architectures, using CRYAB and CRYBB2 as examples of how stress-associated changes can be spatially mapped in situ within the human lens.
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