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Gene therapy has obvious advantages in the treatment of ocular diseases due to the unique structure of the eye. In recent years, there are more and more therapeutic gene-based drugs for ophthalmic application in clinical trials. Most of the delivery vectors are adeno-associated virus and administered via intraocular injection, which has potential risks. Traditional remedies, such as topical instillationor systemic administration, have limited therapeutic effects on the diseases in the posterior segment of the eye, where the chemical drugs are hard to reach. This makes the research of new strategies for gene drug delivery extremely urgent. For better understanding of the latest hot topics of ocular gene therapy, this article is prepared to introduce application of gene therapy to the typical ocular diseases and the corresponding gene-based medicines. The absorption routes for gene delivery into eyes and existing barriers are summarized. Finally, the gene delivery strategies are highlighted. The clinical application of ocular gene therapy will be boosted by overcoming the absorbing barriers and reducing the potential pitfalls.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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