Multiplexed CRISPR-Cas9 system in a single adeno-associated virus to simultaneously knock out redundant clock genes.
Multiplexed CRISPR-Cas9 system in a single adeno-associated virus to simultaneously knock out redundant clock genes.
复制标题
DOI:
10.1038/s41598-021-82287-0
复制
发表时间:
2021-01-28
影响因子:
4.6
通讯作者:
Choe HK
中科院分区:
文献类型:
--
作者:
Kim B;Kim J;Chun M;Park I;Kwak D;Choi M;Kim K;Choe HK
The mammalian molecular clock is based on a transcription-translation feedback loop (TTFL) comprising the Period1, 2 (Per1, 2), Cryptochrome1, 2 (Cry1, 2), and Brain and Muscle ARNT-Like 1 (Bmal1) genes. The robustness of the TTFL is attributed to genetic redundancy among some essential clock genes, deterring genetic studies on molecular clocks using genome editing targeting single genes. To manipulate multiple clock genes in a streamlined and efficient manner, we developed a CRISPR-Cas9-based single adeno-associated viral (AAV) system targeting the circadian clock (CSAC) for essential clock genes including Pers, Crys, or Bmal1. First, we tested several single guide RNAs (sgRNAs) targeting individual clock genes in silico and validated their efficiency in Neuro2a cells. To target multiple genes, multiplex sgRNA plasmids were constructed using Golden Gate assembly and packaged into AAVs. CSAC efficiency was evident through protein downregulation in vitro and ablated molecular oscillation ex vivo. We also measured the efficiency of CSAC in vivo by assessing circadian rhythms after injecting CSAC into the suprachiasmatic nuclei of Cas9-expressing knock-in mice. Circadian locomotor activity and body temperature rhythms were severely disrupted in these mice, indicating that our CSAC is a simple yet powerful tool for investigating the molecular clock in vivo.
登录
查看更多内容
影响因子:
20.6
作者:
Liu Z;Cai Y;Liao Z;Xu Y;Wang Y;Wang Z;Jiang X;Li Y;Lu Y;Nie Y;Zhang X;Li C;Bian X;Poo MM;Chang HC;Sun Q
通讯作者:
Sun Q
DOI:
10.1152/ajpregu.00395.2004
发表时间:
2005-01-01
影响因子:
2.8
作者:
Nagashima, K;Matsue, K;Kanosue, K
通讯作者:
Kanosue, K
影响因子:
5.7
作者:
He M;Huang ZJ
通讯作者:
Huang ZJ
影响因子:
10.6
作者:
Landgraf D;Long JE;Proulx CD;Barandas R;Malinow R;Welsh DK
通讯作者:
Welsh DK
影响因子:
4.6
作者:
Jin, Yuan-Hu;Joo, Hyunjeong;Lee, Choogon
通讯作者:
Lee, Choogon