CRISPR-Cas-based transcriptional activators allow genetic engineers to specifically induce expression of one or many target genes . Here we review the many design variations of these versatile tools and compare their effectiveness in different eukaryotic systems. Lastly, we highlight several applications of programmable transcriptional activation to interrogate and engineer complex biological processes.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7580621 | PMC |
http://dx.doi.org/10.1089/crispr.2020.0064 | DOI Listing |
Proc Natl Acad Sci U S A
January 2025
Innovative Genomics Institute, University of California, Berkeley, CA 94720.
The widespread application of genome editing to treat and cure disease requires the delivery of genome editors into the nucleus of target cells. Enveloped delivery vehicles (EDVs) are engineered virally derived particles capable of packaging and delivering CRISPR-Cas9 ribonucleoproteins (RNPs). However, the presence of lentiviral genome encapsulation and replication proteins in EDVs has obscured the underlying delivery mechanism and precluded particle optimization.
View Article and Find Full Text PDFAnal Chim Acta
January 2025
Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, People's Republic of China; Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, People's Republic of China; Hubei Engineering Center for Infectious Disease Prevention, Control and Treatment, Wuhan, People's Republic of China. Electronic address:
Background: In current years, the CRISPR (clustered regularly interspaced short palindromic repeats) based strategies have emerged as the most promising molecular tool in the field of gene editing, intracellular imaging, transcriptional regulation and biosensing. However, the recent CRISPR-based diagnostic technologies still require the incorporation of other amplification strategies (such as polymerase chain reaction) to improve the cis/trans cleavage activity of Cas12a, which complicates the detection workflow and lack of a uniform compatible system to respond to the target in one pot.
Results: To better fully-functioning CRISPR/Cas12a, we reported a novel technique for straightforward nucleic acid detection by incorporating enzyme-responsive steric hindrance-based branched inhibitors with CRISPR/AsCas12a methodology.
Anal Chim Acta
January 2025
Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT, 84322, USA; Department of Chemistry, University of Louisiana at Lafayette, 300 East St. Mary Blvd, Lafayette, LA, 70504, USA. Electronic address:
A rapid and accurate biosensor for detecting disease biomarkers at point-of-care is essential for early disease diagnosis and preventing pandemics. CRISPR-Cas12a is a promising recognition element for DNA biosensors due to its programmability, specificity, and deoxyribonuclease activity initiated in the presence of a biomarker. The current electrochemical CRISPR-Cas12a-based biosensors utilize the single-stranded DNA (ssDNA) self-assembled on an electrode surface and covalently modified with the redox indicator, usually methylene blue (MB).
View Article and Find Full Text PDFCell Host Microbe
January 2025
Department of Biology, University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Copenhagen, Denmark. Electronic address:
Type III CRISPR-Cas executes a multifaceted anti-phage response, activating effectors such as a nuclease or membrane depolarizer. In a recent Cell paper, Baca and Majumder et al. report an accessory effector, Cad1, which deaminates ATP into ITP, causing ITP accumulation and host growth arrest, thereby inhibiting phage propagation.
View Article and Find Full Text PDFAnal Chem
January 2025
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
The CRISPR-Cas12a system has shown tremendous potential for developing efficient biosensors. Albeit important, current CRISPR-Cas system-based diagnostic technologies (CRISPR-DX) highly rely on an additional preamplification procedure to obtain high sensitivity, inevitably leading to issues such as complicated assay workflow, cross-contamination, etc. Herein, a spherical protospacer-adjacent motif (PAM)-antenna-enhanced CRISPR-Cas12a system is fabricated for universal amplification-free nucleic acid detection with a detection limit of subfemtomolar.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!