Reprogrammed tracrRNAs enable repurposing of RNAs as crRNAs and sequence-specific RNA biosensors.
Reprogrammed tracrRNAs enable repurposing of RNAs as crRNAs and sequence-specific RNA biosensors.
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重编程的tracrRNA能够将RNA再利用为crRNA和序列特异性RNA生物传感器。
DOI:
10.1038/s41467-022-29604-x
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发表时间:
2022-04-11
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
In type II CRISPR systems, the guide RNA (gRNA) comprises a CRISPR RNA (crRNA) and a hybridized trans-acting CRISPR RNA (tracrRNA), both being essential in guided DNA targeting functions. Although tracrRNAs are diverse in sequence and structure across type II CRISPR systems, the programmability of crRNA-tracrRNA hybridization for Cas9 is not fully understood. Here, we reveal the programmability of crRNA-tracrRNA hybridization for Streptococcus pyogenes Cas9, and in doing so, redefine the capabilities of Cas9 proteins and the sources of crRNAs, providing new biosensing applications for type II CRISPR systems. By reprogramming the crRNA-tracrRNA hybridized sequence, we show that engineered crRNA-tracrRNA interactions can not only enable the design of orthogonal cellular computing devices but also facilitate the hijacking of endogenous small RNAs/mRNAs as crRNAs. We subsequently describe how these re-engineered gRNA pairings can be implemented as RNA sensors, capable of monitoring the transcriptional activity of various environment-responsive genomic genes, or detecting SARS-CoV-2 RNA in vitro, as an Atypical gRNA-activated Transcription Halting Alarm (AGATHA) biosensor. In type II CRISPR systems, the guide RNA (gRNA) comprises a CRISPR RNA (crRNA) and a hybridized trans-acting CRISPR RNA (tracrRNA), both being essential in guided DNA targeting functions. Here the authors investigate the programmability of crRNA-tracrRNA hybridization for Cas9 and apply this to biosensing.
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影响因子:
4.1
作者:
Karvelis T;Gasiunas G;Miksys A;Barrangou R;Horvath P;Siksnys V
通讯作者:
Siksnys V
影响因子:
64.8
作者:
Anders, Carolin;Niewoehner, Ole;Duerst, Alessia;Jinek, Martin
通讯作者:
Jinek, Martin
影响因子:
33.5
作者:
Li SY;Cheng QX;Wang JM;Li XY;Zhang ZL;Gao S;Cao RB;Zhao GP;Wang J
通讯作者:
Wang J
影响因子:
4.7
作者:
Hillson, Nathan J.;Rosengarten, Rafael D.;Keasling, Jay D.
通讯作者:
Keasling, Jay D.
影响因子:
56.9
作者:
Jinek, Martin;Chylinski, Krzysztof;Charpentier, Emmanuelle
通讯作者:
Charpentier, Emmanuelle