نتایج جستجو برای: crispr

تعداد نتایج: 12099  

2017
Claudio Hidalgo-Cantabrana Alexandra B. Crawley Borja Sanchez Rodolphe Barrangou

Diverse CRISPR-Cas systems provide adaptive immunity in many bacteria and most archaea, via a DNA-encoded, RNA-mediated, nucleic-acid targeting mechanism. Over time, CRISPR loci expand via iterative uptake of invasive DNA sequences into the CRISPR array during the adaptation process. These genetic vaccination cards thus provide insights into the exposure of strains to phages and plasmids in spa...

2017
Deborah Ku

The biotechnology sector is rapidly changing with the increase in technological advancements. 1 The laws governing patent protection, specifically the laws governing patent eligibility, have also changed to adapt to these innovations.2 This paper focuses on the CRISPR-Cas9 technology, a genome editing tool that is changing the field of genetic engineering.3 As of November 2016, the U.S. Patent ...

Journal: :Angewandte Chemie 2016
Piyush K Jain Vyas Ramanan Arnout G Schepers Nisha S Dalvie Apekshya Panda Heather E Fleming Sangeeta N Bhatia

The ability to remotely trigger CRISPR/Cas9 activity would enable new strategies to study cellular events with greater precision and complexity. In this work, we have developed a method to photocage the activity of the guide RNA called "CRISPR-plus" (CRISPR-precise light-mediated unveiling of sgRNAs). The photoactivation capability of our CRISPR-plus method is compatible with the simultaneous t...

Journal: :Current opinion in microbiology 2015
Jason M Peters Melanie R Silvis Dehua Zhao John S Hawkins Carol A Gross Lei S Qi

In this review we briefly describe the development of CRISPR tools for genome editing and control of transcription in bacteria. We focus on the Type II CRISPR/Cas9 system, provide specific examples for use of the system, and highlight the advantages and disadvantages of CRISPR versus other techniques. We suggest potential strategies for combining CRISPR tools with high-throughput approaches to ...

Journal: :FEMS microbiology reviews 2015
André Plagens Hagen Richter Emmanuelle Charpentier Lennart Randau

The CRISPR (clustered regularly interspaced short palindromic repeats)-Cas (CRISPR-associated) adaptive immune systems use small guide RNAs, the CRISPR RNAs (crRNAs), to mark foreign genetic material, e.g. viral nucleic acids, for degradation. Archaea and bacteria encode a large variety of Cas proteins that bind crRNA molecules and build active ribonucleoprotein surveillance complexes. The evol...

Journal: :PloS one 2016
Lazar Dimitrov Darlene Pedersen Kathryn H Ching Henry Yi Ellen J Collarini Shelley Izquierdo Marie-Cecile van de Lavoir Philip A Leighton

The CRISPR/Cas9 system has been applied in a large number of animal and plant species for genome editing. In chickens, CRISPR has been used to knockout genes in somatic tissues, but no CRISPR-mediated germline modification has yet been reported. Here we use CRISPR to target the chicken immunoglobulin heavy chain locus in primordial germ cells (PGCs) to produce transgenic progeny. Guide RNAs wer...

2017
Changzhi Zhao Xiaoguo Zheng Wubin Qu Guanglei Li Xinyun Li Yi-Liang Miao Xiaosong Han Xiangdong Liu Zhenhua Li Yunlong Ma Qianzhi Shao Haiwei Li Fei Sun Shengsong Xie Shuhong Zhao

Designing efficient and specific CRISPR single-guide RNAs (sgRNAs) is vital for the successful application of CRISPR technology. Currently, a growing number of new RNA-guided endonucleases with a different protospacer adjacent motif (PAM) have been discovered, suggesting the necessity to develop a versatile tool for designing sgRNA to meet the requirement of different RNA-guided DNA endonucleas...

Journal: :Biochemical Society transactions 2013
Giuseppe Cannone Mariam Webber-Birungi Laura Spagnolo

The CRISPR (clustered regularly interspaced short palindromic repeats) system is an adaptive immune system that targets viruses and other mobile genetic elements in bacteria and archaea. Cells store information of past infections in their genome in repeat-spacer arrays. After transcription, these arrays are processed into unit-length crRNA (CRISPR RNA) that is loaded into effector complexes enc...

Journal: :Molecular cell 2012
Caryn R Hale Sonali Majumdar Joshua Elmore Neil Pfister Mark Compton Sara Olson Alissa M Resch Claiborne V C Glover Brenton R Graveley Rebecca M Terns Michael P Terns

Small RNAs target invaders for silencing in the CRISPR-Cas pathways that protect bacteria and archaea from viruses and plasmids. The CRISPR RNAs (crRNAs) contain sequence elements acquired from invaders that guide CRISPR-associated (Cas) proteins back to the complementary invading DNA or RNA. Here, we have analyzed essential features of the crRNAs associated with the Cas RAMP module (Cmr) effec...

2016
Jenille Tan Scott E. Martin

To date, lentiviral-based CRISPR-Cas9 screens have largely been conducted in pooled format. However, numerous assays are not amenable to pooled approaches, and lentiviral screening in arrayed format presents many challenges. We sought to examine synthetic CRISPR reagents in the context of arrayed screening. Experiments were performed using aberrant DNA replication as an assay. Using synthetic C...

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