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is a common opportunistic pathogen. The potential efficacy of phage therapy has attracted the attention of researchers, but efficient gene-editing tools are lacking, limiting the study of their biological properties. Here, we designed a type V CRISPR-Cas12a system for the gene editing of phages. We first evaluated the active cutting function of the CRISPR-Cas12a system and discovered that it had a higher gene-cutting efficiency than the type II CRISPR-Cas9 system in three different phages. We also demonstrated the system's ability to precisely edit genes in phages, phages, and phages. Using the aforementioned strategies, non-essential phage genes can be efficiently deleted, resulting in a reduction of up to 5,215 bp (7.05%). Our study has provided a rapid, efficient, and time-saving tool that accelerates progress in phage engineering.
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http://dx.doi.org/10.1016/j.isci.2024.110210 | DOI Listing |
Biotechnol Lett
September 2025
Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
Phage contamination poses a significant threat to industrial fermentation, leading to substantial economic losses. Virulent T-even type phages (T2/T4/T6) represent particularly concerning biological hazards in fermentation systems. This paper developed a novel CRISPR/Cas12a-based system integrated with recombinase polymerase amplification (RPA), enabling ultrasensitive identification of T-even type phages.
View Article and Find Full Text PDFBiosens Bioelectron
August 2025
Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 1
The escalating threat of antimicrobial resistance is exacerbated by delayed diagnostics and improper antibiotics use, underscoring an urgent demand for rapid, versatile AST tools to support evidence-based prescribing. In this study, we present an innovative, generalizable phenotypic AST approach by quantifying bacterial gDNA copy number variations (CNVs) following 0.5-h-brief culturing with antibiotic exposure, termed spatially encapsulated emulsions (SEE)-phAST.
View Article and Find Full Text PDFMicrobiol Spectr
September 2025
National Clinical Research Center for Infectious Diseases, Guangdong Provincial Clinical Research Center for Tuberculosis, Shenzhen Third People's Hospital, Southern University of Science and Technology, Shenzhen, China.
Unlabelled: Drug-resistant tuberculosis (TB) is a major global public health concern. Although isoniazid is currently considered one of the most effective first-line drugs for TB treatment, its efficacy is limited by the emergence of resistance. Therefore, it is imperative to develop new methods for detecting drug-resistant TB.
View Article and Find Full Text PDFJ Agric Food Chem
September 2025
College of Plant Protection, Hunan Agricultural University, Changsha 410128, China.
Glufosinate is a crucial nonselective herbicide used in both conventional and transgenic cropping systems. Its effectiveness is increasingly compromised by resistant weed species like (L.) Gaertn.
View Article and Find Full Text PDFCurr Res Struct Biol
December 2025
Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology (IIT) Delhi, New Delhi, 110016, India.
The CRISPR/Cas system is a potential tool for genome editing, yet it faces challenges due to off-target activity caused by mismatches at specific positions. However, Off-target activity can be minimized by optimal design of guide RNA (gRNA) but there remains a possibility of unintended cleavage, highlighting the role of the Cas nuclease in off-target recognition and binding the target site. This study focuses on comparing the conformational dynamics and stability of Wildtype, RR, RVR, RRm and RVRm variants of AsCas12a with gRNA-DNA bound complexes.
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