keyword
MENU ▼
Read by QxMD icon Read
search

crispr/cas

keyword
https://www.readbyqxmd.com/read/28543738/crispr-editing-in-biological-and-biomedical-investigation
#1
Xing-Da Ju, Jing Xu, Zhong Sheng Sun
The CRISPR (clustered regularly interspaced short palindromic repeat)-Cas (CRISPR--associated protein) system, a prokaryotic RNA-based adaptive immune system against viral infection, is emerging as a powerful genome editing tool in broad research areas. To further improve and expand its functionality, various CRISPR delivery strategies have been tested and optimized, and key CRISPR system components such as Cas protein have been engineered with different purposes. Benefiting from more in-depth understanding and further development of CRISPR, versatile CRISPR-based platforms for genome editing have been rapidly developed to advance investigations in biology and biomedicine...
May 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28542527/genomic-and-transcriptomic-analyses-reveal-adaptation-mechanisms-of-an-acidithiobacillus-ferrivorans-strain-yl15-to-alpine-acid-mine-drainage
#2
Tangjian Peng, Liyuan Ma, Xue Feng, Jiemeng Tao, Meihua Nan, Yuandong Liu, Jiaokun Li, Li Shen, Xueling Wu, Runlan Yu, Xueduan Liu, Guanzhou Qiu, Weimin Zeng
Acidithiobacillus ferrivorans is an acidophile that often occurs in low temperature acid mine drainage, e.g., that located at high altitude. Being able to inhabit the extreme environment, the bacterium must possess strategies to copy with the survival stress. Nonetheless, information on the strategies is in demand. Here, genomic and transcriptomic assays were performed to illuminate the adaptation mechanisms of an A. ferrivorans strain YL15, to the alpine acid mine drainage environment in Yulong copper mine in southwest China...
2017: PloS One
https://www.readbyqxmd.com/read/28536069/crispr-engineered-genome-editing-for-the-next-generation-neurological-disease-modeling
#3
REVIEW
Weijun Feng, Hai-Kun Liu, Daisuke Kawauchi
Neurological disorders often occur because of failure of proper brain development and/or appropriate maintenance of neuronal circuits. In order to understand roles of causative factors (e.g. genes, cell types) in disease development, generation of solid animal models has been one of straight-forward approaches. Recent next generation sequencing studies on human patient-derived clinical samples have identified various types of recurrent mutations in individual neurological diseases. While these discoveries have prompted us to evaluate contribution of mutated genes to these neurological diseases, a feasible but flexible genome editing tool had remained to be developed...
May 20, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28535195/presence-of-type-i-f-crispr-cas-systems-is-associated-with-antimicrobial-susceptibility-in-escherichia-coli
#4
Seyid Aydin, Yoann Personne, Enas Newire, Rebecca Laverick, Oliver Russell, Adam P Roberts, Virve I Enne
Background: Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) and their associated cas genes are sequence-specific DNA nuclease systems found in bacteria and archaea. CRISPR/Cas systems use RNA transcripts of previously acquired DNA (spacers) to target invading genetic elements with the same sequence, including plasmids. In this research we studied the relationship between CRISPR/Cas systems and multidrug resistance in Escherichia coli . Methods: The presence of Type I-E and Type I-F CRISPR systems was investigated among 82 antimicrobial-susceptible and 96 MDR clinical E...
May 23, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28534435/genome-editing-technologies-and-patent-landscape-overview
#5
Fairouz Benahmed-Miniuk, Mat Kresz, Jitendra K Kanaujiya, Christopher D Southgate
Unlike with zinc finger nuclease and transcriptional activator-like effector nuclease DNA modification technologies that rely on lead proteins, developed through expensive and time-consuming processes, the clustered regularly interspaced short palindromic repeat (CRISPR)/Cas system has rapidly emerged as the most promising gene-editing technology to date for the modification of any selected DNA sequence. CRISPR is receiving tremendous fanfare due, in part, to its potential to provide a means to fundamentally alter medical genetics and especially cancer medicine...
May 23, 2017: Pharmaceutical Patent Analyst
https://www.readbyqxmd.com/read/28534256/crispr-cas9-mediated-correction-of-human-genetic-disease
#6
REVIEW
Ke Men, Xingmei Duan, Zhiyao He, Yang Yang, Shaohua Yao, Yuquan Wei
The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated (Cas) protein 9 system (CRISPR/Cas9) provides a powerful tool for targeted genetic editing. Directed by programmable sequence-specific RNAs, this system introduces cleavage and double-stranded breaks at target sites precisely. Compared to previously developed targeted nucleases, the CRISPR/Cas9 system demonstrates several promising advantages, including simplicity, high specificity, and efficiency. Several broad genome-editing studies with the CRISPR/Cas9 system in different species in vivo and ex vivo have indicated its strong potential, raising hopes for therapeutic genome editing in clinical settings...
May 3, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28532598/crispr-cpf1-a-new-tool-for-plant-genome-editing
#7
Syed Shan-E-Ali Zaidi, Magdy M Mahfouz, Shahid Mansoor
Clustered regularly interspaced palindromic repeats (CRISPR)-CRISPR-associated proteins (CRISPR-Cas), a groundbreaking genome-engineering tool, has facilitated targeted trait improvement in plants. Recently, CRISPR-CRISPR from Prevotella and Francisella 1 (Cpf1) has emerged as a new tool for efficient genome editing, including DNA-free editing in plants, with higher efficiency, specificity, and potentially wider applications than CRISPR-Cas9.
May 19, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/28531104/stumbling-across-the-same-phage-comparative-genomics-of-widespread-temperate-phages-infecting-the-fish-pathogen-vibrio-anguillarum
#8
Panos G Kalatzis, Nanna Iben Rørbo, Daniel Castillo, Jesper Juel Mauritzen, Jóhanna Jørgensen, Constantina Kokkari, Faxing Zhang, Pantelis Katharios, Mathias Middelboe
Nineteen Vibrio anguillarum-specific temperate bacteriophages isolated across Europe and Chile from aquaculture and environmental sites were genome sequenced and analyzed for host range, morphology and life cycle characteristics. The phages were classified as Siphoviridae with genome sizes between 46,006 and 54,201 bp. All 19 phages showed high genetic similarity, and 13 phages were genetically identical. Apart from sporadically distributed single nucleotide polymorphisms (SNPs), genetic diversifications were located in three variable regions (VR1, VR2 and VR3) in six of the phage genomes...
May 20, 2017: Viruses
https://www.readbyqxmd.com/read/28529507/a-novel-and-efficient-method-for-bacteria-genome-editing-employing-both-crispr-cas9-and-an-antibiotic-resistance-cassette
#9
Hong Zhang, Qiu-Xiang Cheng, Ai-Min Liu, Guo-Ping Zhao, Jin Wang
As Cas9-mediated cleavage requires both protospacer and protospacer adjacent motif (PAM) sequences, it is impossible to employ the CRISPR/Cas9 system to directly edit genomic sites without available PAM sequences nearby. Here, we optimized the CRISPR/Cas9 system and developed an innovative two-step strategy for efficient genome editing of any sites, which did not rely on the availability of PAM sequences. An antibiotic resistance cassette was employed as both a positive and a negative selection marker. By integrating the optimized two-plasmid CRISPR/Cas system and donor DNA, we achieved gene insertion and point mutation with high efficiency in Escherichia coli, and importantly, obtained clean mutants with no other unwanted mutations...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28523919/editing-plants-for-virus-resistance-using-crispr-cas
#10
J C Green, J S Hu
This minireview summarizes recent advancements using the clustered regularly interspaced palindromic repeats-associated nuclease systems (CRISPR-Cas) derived from prokaryotes to breed plants resistant to DNA and RNA viruses. The CRISPR-Cas system represents a powerful tool able to edit and insert novel traits into plants precisely at chosen loci offering enormous advantages to classical breeding. Approaches to engineering plant virus resistance in both transgenic and non-transgenic plants are discussed. Iterations of the CRISPR-Cas system, FnCas9 and C2c2 capable of editing RNA in eukaryotic cells offer a particular advantage for providing resistance to RNA viruses which represent the great majority of known plant viruses...
2017: Acta Virologica
https://www.readbyqxmd.com/read/28523558/epigenome-editing-in-the-brain
#11
Pavel Bashtrykov, Albert Jeltsch
Epigenome editing aims for an introduction or removal of chromatin marks at a defined genomic region using artificial EpiEffectors resulting in a modulation of the activity of the targeted functional DNA elements. Rationally designed EpiEffectors consist of a targeting DNA-binding module (such as a zinc finger protein, TAL effector, or CRISPR/Cas complex) and usually, but not exclusively, a catalytic domain of a chromatin-modifying enzyme. Epigenome editing opens a completely new strategy for basic research of the central nervous system and causal treatment of psychiatric and neurological diseases, because rewriting of epigenetic information can lead to the direct and durable control of the expression of disease-associated genes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28522157/antiviral-goes-viral-harnessing-crispr-cas9-to-combat-viruses-in-humans
#12
REVIEW
Jasper Adriaan Soppe, Robert Jan Lebbink
The clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated (Cas) systems are RNA-guided sequence-specific prokaryotic antiviral immune systems. In prokaryotes, small RNA molecules guide Cas effector endonucleases to invading foreign genetic elements in a sequence-dependent manner, resulting in DNA cleavage by the endonuclease upon target binding. A rewired CRISPR/Cas9 system can be used for targeted and precise genome editing in eukaryotic cells. CRISPR/Cas has also been harnessed to target human pathogenic viruses as a potential new antiviral strategy...
May 15, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28508226/erratum-to-introducing-precise-genetic-modifications-into-human-3pn-embryos-by-crispr-cas-mediated-genome-editing
#13
Xiangjin Kang, Wenyin He, Yuling Huang, Qian Yu, Yaoyong Chen, Xingcheng Gao, Xiaofang Sun, Yong Fan
No abstract text is available yet for this article.
May 15, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28506212/guideseq-a-bioconductor-package-to-analyze-guide-seq-datasets-for-crispr-cas-nucleases
#14
Lihua Julie Zhu, Michael Lawrence, Ankit Gupta, Hervé Pagès, Alper Kucukural, Manuel Garber, Scot A Wolfe
BACKGROUND: Genome editing technologies developed around the CRISPR-Cas9 nuclease system have facilitated the investigation of a broad range of biological questions. These nucleases also hold tremendous promise for treating a variety of genetic disorders. In the context of their therapeutic application, it is important to identify the spectrum of genomic sequences that are cleaved by a candidate nuclease when programmed with a particular guide RNA, as well as the cleavage efficiency of these sites...
May 15, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28505256/crispr-cas-system-for-yeast-genome-engineering-advances-and-applications
#15
Vratislav Stovicek, Carina Holkenbrink, Irina Borodina
The methods based on the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/CRISPR-associated (Cas) system have quickly gained popularity for genome editing and transcriptional regulation in many organisms, including yeast. This review aims to provide a comprehensive overview of CRISPR application for different yeast species: from basic principles and genetic design to applications.
May 15, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28489428/a-single-molecule-view-of-genome-editing-proteins-biophysical-mechanisms-for-tales-and-crispr-cas9
#16
Luke Cuculis, Charles M Schroeder
Exciting new advances in genome engineering have unlocked the potential to radically alter the treatment of human disease. In this review, we discuss the application of single-molecule techniques to uncover the mechanisms behind two premier classes of genome editing proteins: transcription activator-like effector nucleases (TALENs) and the clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated system (Cas). These technologies have facilitated a striking number of gene editing applications in a variety of organisms; however, we are only beginning to understand the molecular mechanisms governing the DNA editing properties of these systems...
May 10, 2017: Annual Review of Chemical and Biomolecular Engineering
https://www.readbyqxmd.com/read/28487566/the-invasive-neisseria-meningitidis-menc-cc103-from-brazil-is-characterized-by-an-accessory-gene-repertoire
#17
Michel Abanto Marin, Erica Fonseca, Fernando Encinas, Fernanda Freitas, Dhian Almeida Camargo, Roney Santos Coimbra, Ivano de Filippis, Ana Carolina Vicente
Neisseria meningitidis infections are a major issue for global health. The invasive MenC ST-103 clonal complex (CC103) has been the most prevalent in meningococcal outbreaks in Brazil, occurring also in several countries worldwide. Here we have analysed the population structure and accessory genome of MenC CC103 strains from a global perspective. An in-depth phylogenomic analysis revealed a lineage of N. meningitidis causing meningitis in Brazil and the United Kingdom. This lineage was also characterized as harbouring a particular accessory genome composed of CRISPR/Cas and restriction modification systems...
May 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28479296/the-mammalian-malonyl-coa-synthetase-acsf3-is-required-for-mitochondrial-protein-malonylation-and-metabolic-efficiency
#18
Caitlyn E Bowman, Susana Rodriguez, Ebru S Selen Alpergin, Michelle G Acoba, Liang Zhao, Thomas Hartung, Steven M Claypool, Paul A Watkins, Michael J Wolfgang
Malonyl-coenzyme A (malonyl-CoA) is a central metabolite in mammalian fatty acid biochemistry generated and utilized in the cytoplasm; however, little is known about noncanonical organelle-specific malonyl-CoA metabolism. Intramitochondrial malonyl-CoA is generated by a malonyl-CoA synthetase, ACSF3, which produces malonyl-CoA from malonate, an endogenous competitive inhibitor of succinate dehydrogenase. To determine the metabolic requirement for mitochondrial malonyl-CoA, ACSF3 knockout (KO) cells were generated by CRISPR/Cas-mediated genome editing...
April 26, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28479163/cell-penetrating-peptides-cpps-from-delivery-of-nucleic-acids-and-antigens-to-transduction-of-engineered-nucleases-for-application-in-transgenesis
#19
REVIEW
Gandhi Rádis-Baptista, Iana S Campelo, Jean-Étienne R L Morlighem, Luciana M Melo, Vicente J F Freitas
Cell-penetrating peptides (CPPs) have been studied for their capacity to translocate across the lipid membrane of several cell types. In membrane translocation, these peptides can remarkably transport biologically active hydrophilic molecules, such as pharmaceuticals, nucleic acids (DNA and RNA) and even high-molecular-weight proteins, Fig. 3 into the cell cytoplasm and organelles. The development of CPPs as transduction agents includes the modification of gene and protein expression, the reprogramming and differentiation of induced pluripotent stem cells and the preparation of cellular vaccines...
May 4, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28475872/rna-targeting-by-functionally-orthogonal-type-vi-a-crispr-cas-enzymes
#20
Alexandra East-Seletsky, Mitchell R O'Connell, David Burstein, Gavin J Knott, Jennifer A Doudna
CRISPR adaptive immunity pathways protect prokaryotic cells against foreign nucleic acids using CRISPR RNA (crRNA)-guided nucleases. In type VI-A CRISPR-Cas systems, the signature protein Cas13a (formerly C2c2) contains two separate ribonuclease activities that catalyze crRNA maturation and ssRNA degradation. The Cas13a protein family occurs across different bacterial phyla and varies widely in both protein sequence and corresponding crRNA sequence conservation. Although grouped phylogenetically together, we show that the Cas13a enzyme family comprises two distinct functional groups that recognize orthogonal sets of crRNAs and possess different ssRNA cleavage specificities...
May 4, 2017: Molecular Cell
keyword
keyword
85281
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"