Adult Acvr1;Trp53DCKO lenses form vascularized, tumor-like structures at their posterior poles. 4-month-old Trp53CKO and Acvr1;Trp53DCKO lenses were sectioned.

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Presentation transcript:

Adult Acvr1;Trp53DCKO lenses form vascularized, tumor-like structures at their posterior poles. 4-month-old Trp53CKO and Acvr1;Trp53DCKO lenses were sectioned and stained with hematoxylin and eosin (A–E) or Masson trichrome (F–I). Adult Acvr1;Trp53DCKO lenses form vascularized, tumor-like structures at their posterior poles. 4-month-old Trp53CKO and Acvr1;Trp53DCKO lenses were sectioned and stained with hematoxylin and eosin (A–E) or Masson trichrome (F–I). (A) The posterior region of a wild-type lens and the adjacent retina. (B) Overview of the posterior half of a Trp53CKO lens. (C) Overview of the posterior of an Acvr1;Trp53DCKO lens. (D) Magnified image of the boxed area in B, showing a large posterior subcapsular-like plaque and normal separation between the lens and the ganglion cell layer (GCL) of the retina. (E) Magnified image of the boxed area in C, showing a vascularized (arrowheads) tumor-like structure (asterisk) at the posterior pole of the Acvr1;Trp53DCKO lens. (F) Section from the same Trp53CKO lens in B stained with Masson trichrome, which stains the lens capsule blue (arrowheads). (G) Section from the same Acvr1;Trp53DCKO lens in C. The original lens capsule is stained blue (arrowheads). However, towards the posterior of the lens the capsule seems to splay (arrow), forming a multilayered connective tissue. (H) The posterior capsule of the Trp53CKO lens was thin, but remained intact, despite the presence of the posterior subcapsular plaque. Arrowheads indicate the location of the posterior lens capsule. (I) In the posterior of the Acvr1;Trp53DCKO lens, the original lens capsule (arrowheads) was bordered by a multilayered connective tissue (arrows). The outer surface of this connective tissue separated the tumor-like growth (asterisk) from the GCL of the retina, encapsulating the ‘tumor’. Strands of connective tissue within the tumor also stained blue, suggesting that the collagen of the lens capsule had been ‘invaded’ by the tumor cells (arrow). Scale bars: 200 μm (A–C), 20 μm (D–I). Luke A. Wiley et al. Dis. Model. Mech. 2011;4:484-495 © 2011. Published by The Company of Biologists Ltd