CRISPR/Cas9 technology has evolved as the most powerful approach to generate genetic models both for fundamental and preclinical research. Despite its apparent simplicity, the outcome of a genome-editing experiment can be substantially impacted by technical parameters and biological considerations. Here, we present guidelines and tools to optimize CRISPR/Cas9 genome-targeting efficiency and specificity. The nature of the target locus, the design of the single guide RNA and the choice of the delivery method should all be carefully considered prior to a genome-editing experiment. Different methods can also be used to detect off-target cleavages and decrease the risk of unwanted mutations. Together, these optimized tools and proper controls are essential to the assessment of CRISPR/Cas9 genome-editing experiments.
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http://dx.doi.org/10.2144/btn-2018-0187 | DOI Listing |
Front Oncol
December 2024
Department of Chemistry, Biochemistry and Physics, South Dakota State University, Brookings, SD, United States.
Cancers utilize a simple glycan, Sialic Acid, to engage in metastatic processes via the Sialic acid (Sia) -Selectin pathway. Selectins recognize and bind to sialylated substrates, resulting in adhesion, migration, and extravasation, however, how deviations from the canonical form of Sia regulate binding to Selectin receptors (E, L, and P) on hemopoietic cells resulting in these metastatic processes, remained a gap in knowledge. De-O-acetylated Sias has been recently shown to be an integral substrate to the binding of sialic acid binding proteins.
View Article and Find Full Text PDFmBio
December 2024
College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China.
Bacteriophages, known for their ability to kill bacteria, are hampered in their effectiveness because bacteria are able to rapidly develop resistance, thereby posing a significant challenge for the efficacy of phage therapy. The impact of evolutionary trajectories on the long-term success of phage therapy remains largely unclear. Herein, we conducted evolutionary experiments, genomic analysis, and CRISPR-mediated gene editing, to illustrate the evolutionary trajectory occurring between phages and their hosts.
View Article and Find Full Text PDFJ Nanobiotechnology
December 2024
Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850, China.
In the post-COVID-19 era, drug-resistant bacterial infections emerge as one of major death causes, where multidrug-resistant Acinetobacter baumannii (MRAB) and drug-resistant Pseudomonas aeruginosa (DRPA) represent primary pathogens. However, the classical antibiotic strategy currently faces the bottleneck of drug resistance. We develop an antimicrobial strategy that applies the selective delivery of CRISPR/Cas9 plasmids to pathogens with biomimetic cationic hybrid vesicles (BCVs), irrelevant to bacterial drug resistance.
View Article and Find Full Text PDFHastings Cent Rep
December 2024
As shocking as He Jiankui's genetic experiment resulting in the world's first gene-edited babies may have been, a socioethical inquiry into this paradigmatic case of scientific misconduct reveals its deep roots in genetic and scientific nationalism, as manifested in the widely accepted practice of yousheng (superior birth or eugenics) in China and the country's authoritarian pursuit of science superpower status. Along with eugenics, bionationalism has long been an international phenomenon. A global sociobioethics or ethical transculturalism is thus necessary to adequately investigate the macrolevel sociopolitical, historical, and transnational forces, such as bionationalism, that structurally shape bioethical issues and people's responses to them, causing the systematic undermining of essential bioethical norms and the instrumentalization of human life.
View Article and Find Full Text PDFEMBO J
December 2024
Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany.
The cytosolic nucleic acid sensors RIG-I and cGAS induce type-I interferon (IFN)-mediated immune responses to RNA and DNA viruses, respectively. So far no connection between the two cytosolic pathways upstream of IKK-like kinase activation has been investigated. Here, we identify heterogeneous nuclear ribonucleoprotein M (hnRNPM) as a positive regulator of IRF3 phosphorylation and type-I IFN induction downstream of both cGAS and RIG-I.
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