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CRISPR/Cas9 system, consisting of clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated (Cas) proteins, is a prokaryotic immune system that confers resistance to foreign genetic elements such as those present within plasmids and phages. A simple version of the CRISPR/Cas system, type Ⅱ CRISPR, has been modified to edit genomes. By delivering the Cas9 nuclease together with a synthetic guide RNA (sgRNA) into cells, genome can be edited at desired loci site. CRISPR/Cas genome editing techniques have been widely implemented in various species and research areas. In this review, we summarize the several applications of CRISPR/Cas9 in the field of drug discovery and development, which include target gene screening and editing, drug target screening and validation, generation of animal models and treatment of genetic disease, etc. The defects and improvements of CRISPR/Cas9 technology is discussed as well.
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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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