Enhancement of CRISPR/Cas12a trans-cleavage activity using hairpin DNA reporters.
Enhancement of CRISPR/Cas12a trans-cleavage activity using hairpin DNA reporters.
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DOI:
10.1093/nar/gkac578
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发表时间:
2022-08-12
影响因子:
14.9
通讯作者:
Porchetta, Alessandro
中科院分区:
文献类型:
--
作者:
Rossetti, Marianna;Merlo, Rosa;Bagheri, Neda;Moscone, Danila;Valenti, Anna;Saha, Aakash;Arantes, Pablo R.;Ippodrino, Rudy;Ricci, Francesco;Treglia, Ida;Delibato, Elisabetta;van der Oost, John;Palermo, Giulia;Perugino, Giuseppe;Porchetta, Alessandro
The RNA programmed non-specific (trans) nuclease activity of CRISPR-Cas Type V and VI systems has opened a new era in the field of nucleic acid-based detection. Here, we report on the enhancement of trans-cleavage activity of Cas12a enzymes using hairpin DNA sequences as FRET-based reporters. We discover faster rate of trans-cleavage activity of Cas12a due to its improved affinity (Km) for hairpin DNA structures, and provide mechanistic insights of our findings through Molecular Dynamics simulations. Using hairpin DNA probes we significantly enhance FRET-based signal transduction compared to the widely used linear single stranded DNA reporters. Our signal transduction enables faster detection of clinically relevant double stranded DNA targets with improved sensitivity and specificity either in the presence or in the absence of an upstream pre-amplification step. Here we report on the molecular basis for the enhancement of trans-cleavage activity of Cas12a enzyme using hairpin DNA as FRET reporters.
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DOI:
10.1126/science.aaf5573
发表时间:
2016-08-05
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Abudayyeh OO;Gootenberg JS;Konermann S;Joung J;Slaymaker IM;Cox DB;Shmakov S;Makarova KS;Semenova E;Minakhin L;Severinov K;Regev A;Lander ES;Koonin EV;Zhang F
通讯作者:
Zhang F
影响因子:
64.8
作者:
East-Seletsky A;O'Connell MR;Knight SC;Burstein D;Cate JH;Tjian R;Doudna JA
通讯作者:
Doudna JA
影响因子:
8.6
作者:
Braselmann E;Rathbun C;Richards EM;Palmer AE
通讯作者:
Palmer AE
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:
Li, Linxian;Li, Shiyuan;Wang, Jin
通讯作者:
Wang, Jin