Idioma:

Regeneration from three cellular sources and ectopic mini‐retina formation upon neurotoxic retinal degeneration in Xenopus

Parain, Karine ; Chesneau, Albert ; Locker, Morgane ; Borday, Caroline ; Perron, Muriel

Glia, 2024-04, Vol.72 (4), p.759-776 [Periódico revisado por pares]

Hoboken, USA: John Wiley & Sons, Inc

Texto completo disponível

Citações Citado por

Enviar para

Título:
Regeneration from three cellular sources and ectopic mini‐retina formation upon neurotoxic retinal degeneration in Xenopus
Autor: Parain, Karine ; Chesneau, Albert ; Locker, Morgane ; Borday, Caroline ; Perron, Muriel
Assuntos: Animals ; Cell cycle ; Cell death ; Cell Proliferation ; ciliary marginal zone ; Cobalt ; Cobalt chloride ; Damage ; Degeneration ; Epithelium ; Life Sciences ; Mueller cells ; Müller glia ; Neuroglia - metabolism ; Neuronal-glial interactions ; Neurotoxicity ; photoreceptor degeneration ; Regeneration ; Regeneration - physiology ; Retina ; Retinal degeneration ; Retinal Degeneration - chemically induced ; Retinal Degeneration - metabolism ; Retinal pigment epithelium ; retinal pigmented epithelium ; Stem cells ; Xenopus ; Xenopus laevis ; Xenopus laevis - physiology ; Xenopus tropicalis
É parte de: Glia, 2024-04, Vol.72 (4), p.759-776
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Regenerative abilities are not evenly distributed across the animal kingdom. The underlying modalities are also highly variable. Retinal repair can involve the mobilization of different cellular sources, including ciliary marginal zone (CMZ) stem cells, the retinal pigmented epithelium (RPE), or Müller glia. To investigate whether the magnitude of retinal damage influences the regeneration modality of the Xenopus retina, we developed a model based on cobalt chloride (CoCl2) intraocular injection, allowing for a dose‐dependent control of cell death extent. Analyses in Xenopus laevis revealed that limited CoCl2‐mediated neurotoxicity only triggers cone loss and results in a few Müller cells reentering the cell cycle. Severe CoCl2‐induced retinal degeneration not only potentializes Müller cell proliferation but also enhances CMZ activity and unexpectedly triggers RPE reprogramming. Surprisingly, reprogrammed RPE self‐organizes into an ectopic mini‐retina‐like structure laid on top of the original retina. It is thus likely that the injury paradigm determines the awakening of different stem‐like cell populations. We further show that these cellular sources exhibit distinct neurogenic capacities without any bias towards lost cells. This is particularly striking for Müller glia, which regenerates several types of neurons, but not cones, the most affected cell type. Finally, we found that X. tropicalis also has the ability to recruit Müller cells and reprogram its RPE following CoCl2‐induced damage, whereas only CMZ involvement was reported in previously examined degenerative models. Altogether, these findings highlight the critical role of the injury paradigm and reveal that three cellular sources can be reactivated in the very same degenerative model. Main Points CoCl2‐induced retinal neurodegeneration awakens different cell populations in X. laevis. X. laevis reprogrammed RPE self‐organizes into an ectopic mini‐retina‐like structure. X. tropicalis has also the ability to recruit Müller cells and reprogram its RPE.
Editor: Hoboken, USA: John Wiley & Sons, Inc
Idioma: Inglês

Links

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Regeneration from three cellular sources and ectopic mini‐retina formation upon neurotoxic retinal degeneration in Xenopus

Parain, Karine ; Chesneau, Albert ; Locker, Morgane ; Borday, Caroline ; Perron, Muriel

Hoboken, USA: John Wiley & Sons, Inc

Buscando em bases de dados remotas. Favor aguardar.