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Ð”Ð°Ð½Ð½Ð°Ñ Ñ€Ð°Ð±Ð¾Ñ‚Ð° поÑвÑщена иÑÑледованию одного из оÑновополагающих аÑпектов оптогенетичеÑкого Ð¿Ñ€Ð¾Ñ‚ÐµÐ·Ð¸Ñ€Ð¾Ð²Ð°Ð½Ð¸Ñ â€“ роли вируÑного капÑида в транÑдукции целевых клеток Ñетчатки. ИÑÑледование было ориентировано в первую очередь на изучение иÑкуÑÑтвенно-Ñозданных перÑпективных капÑидов и их Ð¿Ñ€Ð¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ðº протезированию дегенеративной Ñетчатки. Ð’ ходе работы было оÑущеÑтвлено Ñравнение ÑффективноÑти транÑдукции клеток Ñетчатки мыши на примере двух капÑидов AAV, разработанных на оÑнове разных Ñеротипов: капÑида 7m8 производного от AAV2 и PHP.eB производного от AAV9. ВируÑные вектора Ñ Ñ†ÐµÐ»ÐµÐ²Ñ‹Ð¼ транÑгеном вводили Ñ Ð¿Ð¾Ð¼Ð¾Ñ‰ÑŒÑŽ интравитреальных инъекций, региÑÑ‚Ñ€Ð°Ñ†Ð¸Ñ Ñ„ÑƒÐ½ÐºÑ†Ð¸Ð¾Ð½Ð°Ð»ÑŒÐ½Ð¾Ñти Ñетчатки в динамике производилаÑÑŒ Ñ Ð¿Ð¾Ð¼Ð¾Ñ‰ÑŒÑŽ ÐРГ, по прошеÑтвии меÑÑца ÑкÑпреÑÑÐ¸Ñ Ñ†ÐµÐ»ÐµÐ²Ð¾Ð³Ð¾ транÑгена оценивалаÑÑŒ Ñ Ð¿Ð¾Ð¼Ð¾Ñ‰ÑŒÑŽ гиÑтологичеÑких методов. Результаты ÐРГ измерений фиттировалиÑÑŒ Ñ Ð¿Ð¾Ð¼Ð¾Ñ‰ÑŒÑŽ ÑƒÑ€Ð°Ð½ÐµÐ½Ð¸Ñ Ðака-Раштона. С точки Ð·Ñ€ÐµÐ½Ð¸Ñ Ð¼ÐµÑ‚Ð¾Ð´Ð¾Ð² оптогенетичеÑкого Ð¿Ñ€Ð¾Ñ‚ÐµÐ·Ð¸Ñ€Ð¾Ð²Ð°Ð½Ð¸Ñ Ñ‚Ñ€Ð°Ð½ÑÐ´ÑƒÐºÑ†Ð¸Ñ ÐºÐ»ÐµÑ‚Ð¾Ðº Ñетчатки и ÑкÑпреÑÑÐ¸Ñ Ñ†ÐµÐ»ÐµÐ²Ð¾Ð³Ð¾ транÑгена были намного более Ñффективными при иÑпользовании вируÑного вектора, упакованного в капÑид 7m8. AAV-PHP.eB вектор преимущеÑтвенно инфицировал фоторецепторы и пигментный Ñпителий, очаги инфекции при его иÑпользовании были крайне редкими и имели неравномерное раÑпределение по площади Ñетчатки.
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.
degenerative retina, дегенеÑаÑÐ¸Ð²Ð½Ð°Ñ ÑеÑÑаÑка, ÑÐ¾Ð»Ñ ÐºÐ°Ð¿Ñида, ÑлекÑÑоÑеÑиногÑаÑиÑ, gene therapy, аденоаÑÑоÑииÑованнÑе виÑÑÑнÑе векÑоÑа, adenoassociated viral vectors, retinal transduction, ÑÑанÑдÑкÑÐ¸Ñ ÑеÑÑаÑки, the role of capsid, optogenetic prosthetics, Ð³ÐµÐ½Ð½Ð°Ñ ÑеÑапиÑ, опÑогенеÑиÑеÑкое пÑоÑезиÑование, electroretinography
degenerative retina, дегенеÑаÑÐ¸Ð²Ð½Ð°Ñ ÑеÑÑаÑка, ÑÐ¾Ð»Ñ ÐºÐ°Ð¿Ñида, ÑлекÑÑоÑеÑиногÑаÑиÑ, gene therapy, аденоаÑÑоÑииÑованнÑе виÑÑÑнÑе векÑоÑа, adenoassociated viral vectors, retinal transduction, ÑÑанÑдÑкÑÐ¸Ñ ÑеÑÑаÑки, the role of capsid, optogenetic prosthetics, Ð³ÐµÐ½Ð½Ð°Ñ ÑеÑапиÑ, опÑогенеÑиÑеÑкое пÑоÑезиÑование, electroretinography
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