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Роль капсида аденоассоциированного вирусного вектора в трансдукции клеток сетчатки мыши

выпускная квалификационная работа магистра

Роль капсида аденоассоциированного вирусного вектора в трансдукции клеток сетчатки мыши

Abstract

Данная работа посвящена исследованию одного из основополагающих аспектов оптогенетического протезирования – роли вирусного капсида в трансдукции целевых клеток сетчатки. Исследование было ориентировано в первую очередь на изучение искусственно-созданных перспективных капсидов и их применения к протезированию дегенеративной сетчатки. В ходе работы было осуществлено сравнение эффективности трансдукции клеток сетчатки мыши на примере двух капсидов AAV, разработанных на основе разных серотипов: капсида 7m8 производного от AAV2 и PHP.eB производного от AAV9. Вирусные вектора с целевым трансгеном вводили с помощью интравитреальных инъекций, регистрация функциональности сетчатки в динамике производилась с помощью ЭРГ, по прошествии месяца экспрессия целевого трансгена оценивалась с помощью гистологических методов. Результаты ЭРГ измерений фиттировались с помощью уранения Нака-Раштона. С точки зрения методов оптогенетического протезирования трансдукция клеток сетчатки и экспрессия целевого трансгена были намного более эффективными при использовании вирусного вектора, упакованного в капсид 7m8. AAV-PHP.eB вектор преимущественно инфицировал фоторецепторы и пигментный эпителий, очаги инфекции при его использовании были крайне редкими и имели неравномерное распределение по площади сетчатки.

This work is devoted to the study of one of the fundamental aspects of optogenetic prosthetics – the role of the viral capsid in the transduction of target retinal cells. The research was focused primarily on the study of artificially created promising capsids and their application to prosthetics of the degenerative retina. In the course of the work, the efficiency of mouse retinal cell transduction was compared using the example of two AAV capsids developed based on different serotypes: capsid 7m8 derived from AAV2 and PHP.eB derived from AAV9. Viral vectors with the target transgene were injected using intravitreal injections, the registration of retinal functionality in dynamics was performed using ERG, after a month the expression of the target transgene was evaluated using histological methods. The results of the ERG measurements were fitted by the Naka-Rushton equation. From the point of view of optogenetic prosthetics, the transduction of retinal cells and the expression of the target transgene were much more effective when using a viral vector packed in a 7m8 capsid. AAV-PHP.eB vector mainly infected photoreceptors and pigment epithelium, centers of infection when using it were extremely rare and had an uneven distribution over the area of the retina.

Keywords

degenerative retina, дегенеративная сетчатка, роль капсида, электроретинография, gene therapy, аденоассоциированные вирусные вектора, adenoassociated viral vectors, retinal transduction, трансдукция сетчатки, the role of capsid, optogenetic prosthetics, генная терапия, оптогенетическое протезирование, electroretinography

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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