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K-12 is one of the most well-studied species of bacteria. This species, however, is much more difficult to modify by homologous recombination (HR) than other model microorganisms. Research on HR in has led to a better understanding of the molecular mechanisms of HR, resulting in technical improvements and rapid progress in genome research, and allowing whole-genome mutagenesis and large-scale genome modifications. Developments using λ Red (, , and ) and CRISPR-Cas have made as amenable to genome modification as other model microorganisms, such as and . This review describes the history of recombination research in , as well as improvements in techniques for genome modification by HR. This review also describes the results of large-scale genome modification of using these technologies, including DNA synthesis and assembly. In addition, this article reviews recent advances in genome modification, considers future directions, and describes problems associated with the creation of cells by design.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9504249 | PMC |
http://dx.doi.org/10.3390/microorganisms10091835 | DOI Listing |
RSC Adv
September 2025
Department of Medicinal Chemistry, Faculty of Pharmacy, Galala University P. O. 43713 New Galala Egypt
Isatin (1-indole-2,3-dione) is a privileged nitrogen-containing heterocyclic framework that has received considerable attention in anticancer drug discovery owing to its general biological behavior and structural diversity. This review focuses on isatin-heterocyclic hybrids as a valuable model in the development of new anti-cancer drugs that may reduce side effects and help overcome drug resistance, discussing their synthetic approaches and mechanism of action as apoptosis induction through kinase inhibition. With various chemical modifications, isatin had an excellent ability to build powerful isatin hybrids and conjugates targeting multiple oncogenic pathways.
View Article and Find Full Text PDFClin Kidney J
September 2025
Department of Translational Medicine and Surgery, Università Cattolica del Sacro Cuore, Rome, Italy.
Genome editing technologies, particularly clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9, have transformed biomedical research by enabling precise genetic modifications. Due to its efficiency, cost-effectiveness and versatility, CRISPR has been widely applied across various stages of research, from fundamental biological investigations in preclinical models to potential therapeutic interventions. In nephrology, CRISPR represents a groundbreaking tool for elucidating the molecular mechanisms underlying kidney diseases and developing innovative therapeutic approaches.
View Article and Find Full Text PDFEnviron Epigenet
May 2025
Department of Biology, Center for Life in Extreme Environments, Portland State University, Portland, OR 97201, United States.
Many organisms have adapted to survive anoxic or hypoxic environments, but the epigenetic responses involved in this successful stress response are not well described in most species. Embryos of the annual killifish have the greatest tolerance to anoxia of all vertebrates, making them a powerful model to study the cellular mechanisms necessary for anoxia tolerance. However, the global histone landscape of this species has never been quantified or explored in relation to stress tolerance.
View Article and Find Full Text PDFEMBO Rep
September 2025
Cell Biology and Epigenetics, Department of Biology, Technical University of Darmstadt, 64287, Darmstadt, Germany.
The flexibility of the spatio-temporal genome replication program during development and disease highlights the regulatory role of plastic epigenetic mechanisms over genetic determinants. Histone post-translational modifications are broadly implicated in replication timing control, yet the specific mechanisms through which individual histone marks influence replication dynamics, particularly in heterochromatin, remain unclear. Here, we demonstrate that H3K36me3 dynamically enriches at pericentromeric heterochromatin, composed of major satellite DNA repeats, prior to replication during mid S phase in mouse embryonic stem cells.
View Article and Find Full Text PDFBiochem Pharmacol
September 2025
Department of Biosciences, JIS University, 81, Nilgunj Road, Agarpara, Kolkata, West Bengal 700109, India. Electronic address:
The malignant manifestation of breast cancer is driven by complex molecular alterations that extend beyond genetic mutations to include epigenetic dysregulation. Among these, DNA methylation is a critical and reversible epigenetic modification that significantly influences breast cancer initiation, progression, and therapeutic resistance. This process, mediated by DNA methyltransferases (DNMTs), involves the addition of methyl groups to cytosine residues within CpG dinucleotides, resulting in transcriptional repression of genes.
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