mTORC1 signaling and negative lens-induced axial elongation: visual neuroscience
The mechanism underlying axial elongation during myopia progression remains unknown. Epidermal growth factor receptor (EGFR) signaling is associated with axial elongation. We explored whether mammalian target of rapamycin complex 1 (mTORC1) signaling acts as the downstream pathway of EGFR and partic...
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| Hauptverfasser: | , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
July 19, 2023
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| In: |
Investigative ophthalmology & visual science
Year: 2023, Jahrgang: 64, Heft: 10, Pages: 1-11 |
| ISSN: | 1552-5783 |
| DOI: | 10.1167/iovs.64.10.24 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1167/iovs.64.10.24 Verlag, kostenfrei, Volltext: https://iovs.arvojournals.org/article.aspx?articleid=2791318 
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| Verfasserangaben: | Ruiheng Zhang, Li Dong, Haotian Wu, Xuhan Shi, Wenda Zhou, Heyan Li, Yitong Li, Chuyao Yu, Yifan Li, Yao Nie, Lei Shao, Chuan Zhang, Yueming Liu, Jost B. Jonas, Wenbin Wei, and Qiong Yang |
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| 245 | 1 | 0 | |a mTORC1 signaling and negative lens-induced axial elongation |b visual neuroscience |c Ruiheng Zhang, Li Dong, Haotian Wu, Xuhan Shi, Wenda Zhou, Heyan Li, Yitong Li, Chuyao Yu, Yifan Li, Yao Nie, Lei Shao, Chuan Zhang, Yueming Liu, Jost B. Jonas, Wenbin Wei, and Qiong Yang |
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| 520 | |a The mechanism underlying axial elongation during myopia progression remains unknown. Epidermal growth factor receptor (EGFR) signaling is associated with axial elongation. We explored whether mammalian target of rapamycin complex 1 (mTORC1) signaling acts as the downstream pathway of EGFR and participates in negative lens-induced axial elongation (NLIAE). Three-week-old male pigmented guinea pigs underwent binocular NLIAE. (1) To investigate whether EGFR is the upstream regulator of mTORC1, an EGFR inhibitor (20 µg erlotinib) was intravitreally injected once a week for three weeks. (2) To assess the effect of mTORC1 inhibition on NLIAE, an mTORC1 inhibitor (2 µg, 10 µg, and 20 µg everolimus) was intravitreally injected once a week for three weeks. (3) To explore the long-term effect of mTORC1 overactivation on axial elongation, an mTORC1 agonist (4 µg MHY1485) was intravitreally injected once a week for three months. Biometric measurements included axial length and choroidal thickness were performed. Compared with the guinea pigs without NLIAE, NLIAE was associated with activation of mTORC1 signaling, which was suppressed by intravitreal erlotinib injection. Intravitreally injected everolimus suppressed NLIAE-induced axial elongation, mTORC1 activation, choroidal thinning, and hypoxia-inducible factor-1α expression in the sclera. Immunofluorescence revealed that the retinal pigment epithelium was the primary location of mTORC1 activation during NLIAE. Combining NLIAE and MHY1485 intravitreal injections significantly promoted axial elongation, choroidal thinning, and peripapillary choroidal atrophy. The mTORC1 signaling is associated with increased axial elongation, as in NLIAE, raising the possibility of inhibiting mTORC1 as a novel treatment for slowing myopia progression. | ||
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| 700 | 1 | |a Yang, Qiong |e VerfasserIn |4 aut | |
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