2026-06-07T23:46:41Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/181992023-08-11T00:46:49Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Martínez De-Luna, Reyna I. author Ku, Ray Y. author Aruck, Alexandria M. author Santiago, Francesca author Viczian, Andrea S. author San Mauro, Diego author Zuber, Michael E. 2023-06-17T22:11:42Z 2023-06-17T22:11:42Z 2017-06-15 0012-1606 10.1016/j.ydbio.2016.03.005 https://hdl.handle.net/20.500.14352/18199 http://www.sciencedirect.com/science/article/pii/S0012160615303602 Intermediate filament proteins are structural components of the cellular cytoskeleton with cell-type specific expression and function. Glial fibrillary acidic protein (GFAP) is a type III intermediate filament protein and is up-regulated in glia of the nervous system in response to injury and during neurodegenerative diseases. In the retina, GFAP levels are dramatically increased in Müller glia and are thought to play a role in the extensive structural changes resulting in Müller cell hypertrophy and glial scar formation. In spite of similar changes to the morphology of Xenopus Müller cells following injury, we found that Xenopus lack a gfap gene. Other type III intermediate filament proteins were, however, significantly induced following rod photoreceptor ablation and retinal ganglion cell axotomy. The recently available X. tropicalis and X. laevis genomes indicate a small deletion most likely resulted in the loss of the gfap gene during anuran evolution. Lastly, a survey of representative species from all three extant amphibian orders including the Anura (frogs, toads), Caudata (salamanders, newts), and Gymnophiona (caecilians) suggests that deletion of the gfap locus occurred in the ancestor of all Anura after its divergence from the Caudata ancestor around 290 million years ago. Our results demonstrate that extensive changes in Müller cell morphology following retinal injury do not require GFAP in Xenopus, and other type III intermediate filament proteins may be involved in the gliotic response. eng Müller glia reactivity follows retinal injury despite the absence of the glial fibrillary acidic protein gene in Xenopus journal article URL https://docta.ucm.es/bitstreams/69bea3b8-f10f-4b4d-8c17-30968cead09e/download File MD5 0b456b8d925b6b685a76e70d5af2c796 12171288 application/pdf Martínez de Luna, Reyna I. 2017. Müller glia follows.pdf