Hector, Mandy ORCID: 0000-0002-0190-3880
(2025).
Moss-derived complement factor H variants attenuate light-induced retinal degeneration.
PhD thesis, Universität zu Köln.
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Abstract
Age related macular degeneration (AMD) is one of the leading causes of vision loss. Various factors are part of the complex disease etiology including genetic risk factors. Polymorphisms in the Complement factor H (CFH) gene are the most prevalent genetic factors for increased AMD risk. CFH is an important regulator of the alternative complement pathway, which is part of the innate immune response. A miss regulation of the complement system is also related to other diseases, like atypical hemolytic syndrome, that were already successfully treated with CFH supplementation. In this study, two moss-derived human CFH variants were tested in a light-induced mouse model of retinal degeneration that is reproducing important aspects of AMD. Two different variants, CPV-101 and CPV-104, which differ in their glycosylation were injected intravitreal one day prior light exposure. The mice were exposed to bright white light for 30 min with an intensity of 10.000 lux. Both variants were capable of reducing the complement pathway activity, resulting in less formation of membrane attack complex. Additionally microgliosis and Müller cell reactivity was reduced, leading to less pro inflammatory cytokine and chemokine signaling. Finally, the number of TUNEL positive cells as well as the retinal thinning was attenuated in mice treated with CPV-101 or CPV-104. This is a promising outcome for a possible future use of moss derived CFH as a therapeutic strategy.
Item Type: | Thesis (PhD thesis) | ||||||||
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URN: | urn:nbn:de:hbz:38-754681 | ||||||||
Date: | 2025 | ||||||||
Language: | English | ||||||||
Faculty: | Faculty of Mathematics and Natural Sciences | ||||||||
Divisions: | Faculty of Medicine > Augenheilkunde | ||||||||
Subjects: | Life sciences Medical sciences Medicine |
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Date of oral exam: | 25 November 2024 | ||||||||
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Refereed: | Yes | ||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/75468 |
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