| Autor: |
Ammaji Rajala, Kenneth Teel, Mohd A. Bhat, Albert Batushansky, Timothy M. Griffin, Lindsey Purcell, Raju V. S. Rajala |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Cell Death and Disease, Vol 13, Iss 7, Pp 1-14 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2041-4889 |
| DOI: |
10.1038/s41419-022-05074-3 |
| Popis: |
Abstract Insulin-like growth factor I (IGF-1) is a neurotrophic factor and is the ligand for insulin-like growth factor 1 receptor (IGF-1R). Reduced expression of IGF-1 has been reported to cause deafness, mental retardation, postnatal growth failure, and microcephaly. IGF-1R is expressed in the retina and photoreceptor neurons; however, its functional role is not known. Global IGF-1 KO mice have age-related vision loss. We determined that conditional deletion of IGF-1R in photoreceptors and pan-retinal cells produces age-related visual function loss and retinal degeneration. Retinal pigment epithelial cell-secreted IGF-1 may be a source for IGF-1R activation in the retina. Altered retinal, fatty acid, and phosphoinositide metabolism are observed in photoreceptor and retinal cells lacking IGF-1R. Our results suggest that the IGF-1R pathway is indispensable for photoreceptor survival, and activation of IGF-1R may be an essential element of photoreceptor and retinal neuroprotection. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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