keyword
MENU ▼
Read by QxMD icon Read
search

CRISPR

keyword
https://www.readbyqxmd.com/read/29045831/usp7-is-a-tumor-specific-wnt-activator-for-apc-mutated-colorectal-cancer-by-mediating-%C3%AE-catenin-deubiquitination
#1
Laura Novellasdemunt, Valentina Foglizzo, Laura Cuadrado, Pedro Antas, Anna Kucharska, Vesela Encheva, Ambrosius P Snijders, Vivian S W Li
The tumor suppressor gene adenomatous polyposis coli (APC) is mutated in most colorectal cancers (CRCs), resulting in constitutive Wnt activation. To understand the Wnt-activating mechanism of the APC mutation, we applied CRISPR/Cas9 technology to engineer various APC-truncated isogenic lines. We find that the β-catenin inhibitory domain (CID) in APC represents the threshold for pathological levels of Wnt activation and tumor transformation. Mechanistically, CID-deleted APC truncation promotes β-catenin deubiquitination through reverse binding of β-TrCP and USP7 to the destruction complex...
October 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/29045453/crispr-cas-mediated-knock-in-via-non-homologous-end-joining-in-the-crustacean-daphnia-magna
#2
Hitoshi Kumagai, Takashi Nakanishi, Tomoaki Matsuura, Yasuhiko Kato, Hajime Watanabe
The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated system (Cas) is widely used for mediating the knock-in of foreign DNA into the genomes of various organisms. Here, we report a process of CRISPR/Cas-mediated knock-in via non-homologous end joining by the direct injection of Cas9/gRNA ribonucleoproteins (RNPs) in the crustacean Daphnia magna, which is a model organism for studies on toxicology, ecology, and evolution. First, we confirmed the cleavage activity of Cas9 RNPs comprising purified Cas9 proteins and gRNAs in D...
2017: PloS One
https://www.readbyqxmd.com/read/29044927/knock-out-of-histamine-receptor-h3-alters-adaptation-to-sudden-darkness-and-monoamine-levels-in-the-zebrafish
#3
Henri A J Puttonen, Maria Sundvik, Svetlana Semenova, Yukako Shirai, Yu-Chia Chen, Pertti Panula
AIM: Histamine receptor H3 has substantial neuropharmacological potential. Currently, knock-out models of this receptor have been investigated only in mice. We characterized the expression of this receptor in the zebrafish and generated a zebrafish histamine receptor H3 knock-out line. Using this model, we studied the role of histamine receptor H3 in important behaviours. We also analyzed the effect of histamine receptor H3 knock-out on monoaminergic systems, which has not been thoroughly studied in any animal model...
October 16, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/29044507/tieg-and-estrogen-modulate-sost-expression-in-the-murine-skeleton
#4
Malayannan Subramaniam, Kevin S Pitel, Elizabeth S Bruinsma, David G Monroe, John R Hawse
TIEG knockout (KO) mice exhibit a female-specific osteopenic phenotype and altered expression of TIEG in humans is associated with osteoporosis. Gene expression profiling studies identified sclerostin as one of the most highly up-regulated transcripts in the long bones of TIEG KO mice relative to WT littermates suggesting that TIEG may regulate SOST expression. TIEG was shown to substantially suppress SOST promoter activity and the regulatory elements through which TIEG functions were identified using promoter deletion and chromatin immunoprecipitation assays...
October 16, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29044017/-crispr-cas9-and-gene-therapy
#5
Luciana E Giono
The development of techniques that allow the precise and efficient edition of the genome of living cells is one of the main goals of biomedical research. Over the last few decades, a number of genome editing tools have been developed, the most prominent being the CRISPR/Cas9 system, a bacterial defense mechanism that has been redesigned for its use in other cellular systems. The accessibility, both technical and economical, and the enormous potential of CRISPR/Cas9 have contributed to an almost unprecedented revolution in the biomedical sciences and represent an important step forward in the field of gene therapy that needs, however, to be taken cautiously...
2017: Medicina
https://www.readbyqxmd.com/read/29043647/the-cellclamper-a-convenient-microfluidic-device-for-time-lapse-imaging-of-yeast
#6
Gregor W Schmidt, Olivier Frey, Fabian Rudolf
Time-lapse fluorescence imaging of yeast cells allows the study of multiple fluorescent targets in single cells, but is often hampered by the tedious cultivation using agar pads or glass bottom wells. Here, we describe the fabrication and operation of a microfluidic device for long-term imaging of yeast cells under constant or changing media conditions. The device allows acquisition of high quality images as cells are fixed in a two-dimensional imaging plane. Four yeast strains can be analyzed simultaneously over several days while up to four different media can be flushed through the chip...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29042517/control-of-growth-and-gut-maturation-by-hoxd-genes-and-the-associated-lncrna-haglr
#7
Jozsef Zakany, Fabrice Darbellay, Bénédicte Mascrez, Anamaria Necsulea, Denis Duboule
During embryonic development, Hox genes participate in the building of a functional digestive system in metazoans, and genetic conditions involving these genes lead to important, sometimes lethal, growth retardation. Recently, this phenotype was obtained after deletion of Haglr, the Hoxd antisense growth-associated long noncoding RNA (lncRNA) located between Hoxd1 and Hoxd3 In this study, we have analyzed the function of Hoxd genes in delayed growth trajectories by looking at several nested targeted deficiencies of the mouse HoxD cluster...
October 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29042501/plasmodium-falciparum-calcium-dependent-protein-kinase-2-is-critical-for-male-gametocyte-exflagellation-but-not-essential-for-asexual-proliferation
#8
Abhisheka Bansal, Alvaro Molina-Cruz, Joseph Brzostowski, Jianbing Mu, Louis H Miller
Drug development efforts have focused mostly on the asexual blood stages of the malaria parasite Plasmodium falciparum Except for primaquine, which has its own limitations, there are no available drugs that target the transmission of the parasite to mosquitoes. Therefore, there is a need to validate new parasite proteins that can be targeted for blocking transmission. P. falciparum calcium-dependent protein kinases (PfCDPKs) play critical roles at various stages of the parasite life cycle and, importantly, are absent in the human host...
October 17, 2017: MBio
https://www.readbyqxmd.com/read/29041978/linc-ror-promotes-mapk-erk-signaling-and-confers-estrogen-independent-growth-of-breast-cancer
#9
Wan-Xin Peng, Jian-Guo Huang, Liu Yang, Ai-Hua Gong, Yin-Yuan Mo
BACKGROUND: The conversion from estrogen-dependent to estrogen-independent state of ER+ breast cancer cells is the key step to promote resistance to endocrine therapies. Although the crucial role of MAPK/ERK signaling pathway in estrogen-independent breast cancer cell growth is well established, the underlying mechanism is not fully understood. METHODS: In this study, we profiled lncRNA expression against a focused group of lncRNAs selected from lncRNA database...
October 17, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29040704/in-planta-processing-of-the-spcas9-grna-complex
#10
Masafumi Mikami, Seiichi Toki, Masaki Endo
In CRISPR/Cas9-mediated genome editing in plants, Streptococcus pyogenes Cas9 (SpCas9) protein and the required guide RNA (gRNA) are, in most cases, expressed from a stably integrated transgene. Generally, SpCas9 protein is expressed from an RNA polymerase (pol) II promoter, while gRNA is expressed from a pol III promoter. However, pol III promoters have not been much characterized other than in model plants, making it difficult to select appropriate promoters for specific applications, while pol II transcripts have to be processed to generate functional gRNAs...
October 12, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29040522/behavioral-and-transcriptomic-analysis-of-trem2-null-mice-not-all-knockout-mice-are-created-equal
#11
Silvia S Kang, Aishe Kurti, Kelsey E Baker, Chia-Chen Liu, Marco Colonna, Jason D Ulrich, David M Holtzman, Guojun Bu, John D Fryer
It is clear that innate immune system status is altered in numerous neurodegenerative diseases. Human genetic studies have demonstrated that Triggering Receptor Expressed in Myeloid cells 2 (TREM2) coding variants have a strong association with Alzheimer's disease (AD) and other neurodegenerative diseases. To more thoroughly understand the impact of TREM2 in vivo, we studied the behavioral and cognitive functions of wild-type (WT) and Trem2-/- (KO) mice during basal conditions and brain function in the context of innate immune stimulation with peripherally administered lipopolysaccharide (LPS)...
October 11, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29039415/crispr-umi-single-cell-lineage-tracing-of-pooled-crispr-cas9-screens
#12
Georg Michlits, Maria Hubmann, Szu-Hsien Wu, Gintautas Vainorius, Elena Budusan, Sergei Zhuk, Thomas R Burkard, Maria Novatchkova, Martin Aichinger, Yiqing Lu, John Reece-Hoyes, Roberto Nitsch, Daniel Schramek, Dominic Hoepfner, Ulrich Elling
Pooled CRISPR screens are a powerful tool for assessments of gene function. However, conventional analysis is based exclusively on the relative abundance of integrated single guide RNAs (sgRNAs) between populations, which does not discern distinct phenotypes and editing outcomes generated by identical sgRNAs. Here we present CRISPR-UMI, a single-cell lineage-tracing methodology for pooled screening to account for cell heterogeneity. We generated complex sgRNA libraries with unique molecular identifiers (UMIs) that allowed for screening of clonally expanded, individually tagged cells...
October 16, 2017: Nature Methods
https://www.readbyqxmd.com/read/29039115/genome-editing-technologies-in-adoptive-t-cell-immunotherapy-for-cancer
#13
REVIEW
Nathan Singh, Junwei Shi, Carl H June, Marco Ruella
PURPOSE OF REVIEW: In this review, we discuss the most recent developments in gene-editing technology and discuss their application to adoptive T cell immunotherapy. RECENT FINDINGS: Engineered T cell therapies targeting cancer antigens have demonstrated significant efficacy in specific patient populations. Most impressively, CD19-directed chimeric antigen receptor T cells (CART19) have led to impressive responses in patients with B-cell leukemia and lymphoma. CTL019, or KYMRIAH™ (tisagenlecleucel), a CD19 CAR T cell product developed by Novartis and the University of Pennsylvania, was recently approved for clinical use by the Food and Drug Administration, representing a landmark in the application of adoptive T cell therapies...
October 16, 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/29038945/human-germline-editing-a-historical-perspective
#14
Michel Morange
The development of the genome editing system called CRISPR-Cas9 has opened a huge debate on the possibility of modifying the human germline. But the types of changes that could and/or ought to be made have not been discussed. To cast some light on this debate, I will describe the story of the CRISPR-Cas9 system. Then, I will briefly review the projects for modification of the human species that were discussed by biologists throughout the twentieth century. Lastly, I will show that for plenty of reasons, both scientific and societal, germline modification is no longer a priority for our societies...
October 16, 2017: History and Philosophy of the Life Sciences
https://www.readbyqxmd.com/read/29038474/a-shared-runx1-bound-zbtb16-enhancer-directs-innate-and-innate-like-lymphoid-lineage-development
#15
Ai-Ping Mao, Isabel E Ishizuka, Darshan N Kasal, Malay Mandal, Albert Bendelac
Zbtb16-encoded PLZF is a signature transcription factor (TF) that directs the acquisition of T-helper effector programs during the development of multiple innate lymphocyte lineages, including natural killer T cell, innate lymphoid cell, mucosal-associated invariant T cell and γδ lineages. PLZF is also essential in osteoblast and spermatogonial development. How Zbtb16 itself is regulated in different lineages is incompletely understood. Here, by systematic CRISPR/Cas9-assisted deletions of chromatin accessible regions within the Zbtb16 locus in mouse, we identify a critical enhancer controlling PLZF expression exclusively in innate lymphoid lineages...
October 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29038160/a-high-resolution-genome-wide-crispr-cas9-viability-screen-reveals-structural-features-and-contextual-diversity-of-the-human-cell-essential-proteome
#16
Thierry Bertomeu, Jasmin Coulombe-Huntington, Andrew Chatr-Aryamontri, Karine Bourdages, Etienne Coyaud, Brian Raught, Yu Xia, Mike Tyers
To interrogate genes essential for cell growth, proliferation and survival in human cells, we carried out a genome-wide CRISPR/Cas9 screen in a B-cell lymphoma line using a custom extended knockout (EKO) library of 278,754 sgRNAs that targeted 19,084 RefSeq genes, 20,852 alternatively-spliced exons and 3,872 hypothetical genes. A new statistical analysis tool called RANKS identified 2,280 essential genes, 234 of which were unique. Individual essential genes were validated experimentally and linked to ribosome biogenesis and stress responses...
October 16, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29038154/deactivated-crispr-associated-protein-9-for-minor-allele-enrichment-in-cell-free-dna
#17
Amin Aalipour, Jonathan C Dudley, Seung-Min Park, Surya Murty, Jacob J Chabon, Evan A Boyle, Maximilian Diehn, Sanjiv S Gambhir
BACKGROUND: Cell-free DNA (cfDNA) diagnostics are emerging as a new paradigm of disease monitoring and therapy management. The clinical utility of these diagnostics is relatively limited by a low signal-to-noise ratio, such as with low allele frequency (AF) mutations in cancer. While enriching for rare alleles to increase their AF before sample analysis is one strategy that can greatly improve detection capability, current methods are limited in their generalizability, ease of use, and applicability to point mutations...
October 16, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/29037147/de-novo-assembly-of-genomes-from-long-sequence-reads-reveals-uncharted-territories-of-propionibacterium-freudenreichii
#18
Paulina Deptula, Pia K Laine, Richard J Roberts, Olli-Pekka Smolander, Helena Vihinen, Vieno Piironen, Lars Paulin, Eija Jokitalo, Kirsi Savijoki, Petri Auvinen, Pekka Varmanen
BACKGROUND: Propionibacterium freudenreichii is an industrially important bacterium granted the Generally Recognized as Safe (the GRAS) status, due to its long safe use in food bioprocesses. Despite the recognized role in the food industry and in the production of vitamin B12, as well as its documented health-promoting potential, P. freudenreichii remained poorly characterised at the genomic level. At present, only three complete genome sequences are available for the species. RESULTS: We used the PacBio RS II sequencing platform to generate complete genomes of 20 P...
October 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29036676/anti-crisprdb-a-comprehensive-online-resource-for-anti-crispr-proteins
#19
Chuan Dong, Ge-Fei Hao, Hong-Li Hua, Shuo Liu, Abraham Alemayehu Labena, Guoshi Chai, Jian Huang, Nini Rao, Feng-Biao Guo
CRISPR-Cas is a tool that is widely used for gene editing. However, unexpected off-target effects may occur as a result of long-term nuclease activity. Anti-CRISPR proteins, which are powerful molecules that inhibit the CRISPR-Cas system, may have the potential to promote better utilization of the CRISPR-Cas system in gene editing, especially for gene therapy. Additionally, more in-depth research on these proteins would help researchers to better understand the co-evolution of bacteria and phages. Therefore, it is necessary to collect and integrate data on various types of anti-CRISPRs...
September 25, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29036671/crispr-cas9-mediated-gene-knockout-is-insensitive-to-target-copy-number-but-is-dependent-on-guide-rna-potency-and-cas9-sgrna-threshold-expression-level
#20
Garmen Yuen, Fehad J Khan, Shaojian Gao, Jayne M Stommel, Eric Batchelor, Xiaolin Wu, Ji Luo
CRISPR/Cas9 is a powerful gene editing tool for gene knockout studies and functional genomic screens. Successful implementation of CRISPR often requires Cas9 to elicit efficient target knockout in a population of cells. In this study, we investigated the role of several key factors, including variation in target copy number, inherent potency of sgRNA guides, and expression level of Cas9 and sgRNA, in determining CRISPR knockout efficiency. Using isogenic, clonal cell lines with variable copy numbers of an EGFP transgene, we discovered that CRISPR knockout is relatively insensitive to target copy number, but is highly dependent on the potency of the sgRNA guide sequence...
September 25, 2017: Nucleic Acids Research
keyword
keyword
1715
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"