Author
Galina E. Pozmogova
Other affiliations: Russian Academy, Peninsular Malaysia, Max Planck Society ...read more
Bio: Galina E. Pozmogova is an academic researcher from Federal Biomedical Agency. The author has contributed to research in topics: Oligonucleotide & Aptamer. The author has an hindex of 16, co-authored 72 publications receiving 745 citations. Previous affiliations of Galina E. Pozmogova include Russian Academy & Peninsular Malaysia.
Topics: Oligonucleotide, Aptamer, Calcium, DNA, Gene
Papers published on a yearly basis
Papers
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TL;DR: A novel approach for the attachment of DNA fragments to the surface of live cells allows rapid and simple DNA multicoding of the cell surface and opens new opportunities in manipulating with cell–cell interactions.
Abstract: We report a novel approach for the attachment of DNA fragments to the surface of live cells By using fluorescence microscopy and flow cytometry we demonstrated that our synthetic conjugates of fatty acid with oligonucleotides can be incorporated in plasma membrane and then hybridized with complementary sequences at the cell surface Method permits to control amount of immobilized DNA on the cell surface All procedures can be completed within minutes and do not alter cell viability Using this approach we tethered floating myeloid HL-60 cells to adherent A431 epitheliocytes in a sequence specific fashion Thus, this method allows rapid and simple DNA multicoding of the cell surface and, therefore, opens new opportunities in manipulating with cell–cell interactions
63 citations
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TL;DR: It is suggested that, similar to classical G4s, imperfect G 4s could be considered as potential regulatory elements, pathology biomarkers and therapeutic targets, reflecting the enhanced sequential diversity of these motifs.
57 citations
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TL;DR: According to the thrombin time test, the aptamer with thio-modifications in both TT loops (LL11) exhibits the same antithrombin efficiency as the original TBA, and shows better stability against DNA nuclease compared to that of TBA.
53 citations
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TL;DR: Due to their relatively high activity and the increased resistance to nuclease digestion imparted by the triazole internucleotide linkages, the novel aptamers are a promising alternative to known DNA-based anticoagulant agents.
46 citations
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TL;DR: These new oligonucleotide analogues with triazole internucleotide linkages with remote from the 3'-terminus were synthesized and their hybridization properties were studied, suggesting that they are among the most promising Triazole DNA mimics characterized to date.
Abstract: New oligonucleotide analogues with triazole internucleotide linkages were synthesized, and their hybridization properties were studied. The analogues demonstrated DNA binding affinities similar to those of unmodified oligonucleotides. The modification was shown to protect the oligonucleotides from nuclease hydrolysis. The modified oligonucleotides were tested as PCR primers. Modifications remote from the 3'-terminus were tolerated by polymerases. Our results suggest that these new oligonucleotide analogues are among the most promising triazole DNA mimics characterized to date.
41 citations
Cited by
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TL;DR: The present work aims to summarize the current approaches adopted for the synthesis of the 1,2,3-triazole and medicinal significance of these architectures as a lead structure for the discovery of drug molecules such as COX-1/COX-2 inhibitors, HIV protease inhibitors, CB1 cannabinoid receptor antagonist and much more which are in the pipeline of clinical trials.
563 citations
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TL;DR: This review highlights the successful advancement of Cu(I)-catalyzed click chemistry in glycoscience and its applications as well as future scope in different streams of applied sciences.
Abstract: Cu(I)-catalyzed azide–alkyne 1,3-dipolar cycloaddition (CuAAC), popularly known as the “click reaction”, serves as the most potent and highly dependable tool for facile construction of simple to complex architectures at the molecular level. Click-knitted threads of two exclusively different molecular entities have created some really interesting structures for more than 15 years with a broad spectrum of applicability, including in the fascinating fields of synthetic chemistry, medicinal science, biochemistry, pharmacology, material science, and catalysis. The unique properties of the carbohydrate moiety and the advantages of highly chemo- and regioselective click chemistry, such as mild reaction conditions, efficient performance with a wide range of solvents, and compatibility with different functionalities, together produce miraculous neoglycoconjugates and neoglycopolymers with various synthetic, biological, and pharmaceutical applications. In this review we highlight the successful advancement of Cu(I)...
557 citations
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TL;DR: This Review discusses the identification of G4s and evidence for their formation in cells using chemical biology, imaging and genomic technologies, and discusses the connection between G4 formation and synthetic lethality in cancer cells, and recent progress towards considering G 4s as therapeutic targets in human diseases.
Abstract: DNA and RNA can adopt various secondary structures. Four-stranded G-quadruplex (G4) structures form through self-recognition of guanines into stacked tetrads, and considerable biophysical and structural evidence exists for G4 formation in vitro. Computational studies and sequencing methods have revealed the prevalence of G4 sequence motifs at gene regulatory regions in various genomes, including in humans. Experiments using chemical, molecular and cell biology methods have demonstrated that G4s exist in chromatin DNA and in RNA, and have linked G4 formation with key biological processes ranging from transcription and translation to genome instability and cancer. In this Review, we first discuss the identification of G4s and evidence for their formation in cells using chemical biology, imaging and genomic technologies. We then discuss possible functions of DNA G4s and their interacting proteins, particularly in transcription, telomere biology and genome instability. Roles of RNA G4s in RNA biology, especially in translation, are also discussed. Furthermore, we consider the emerging relationships of G4s with chromatin and with RNA modifications. Finally, we discuss the connection between G4 formation and synthetic lethality in cancer cells, and recent progress towards considering G4s as therapeutic targets in human diseases.
543 citations
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TL;DR: A critical review of the important underlying characteristics of G-quadruplexes that make them functional, stable, and predictable nanoscaffolds and a critical evaluation of the application of high-resolution structural biology and its ability to provide meaningful and valid models for future applications.
Abstract: The intriguing structural diversity in folded topologies available to guanine-rich nucleic acid repeat sequences have made four-stranded G-quadruplex structures the focus of both basic and applied research, from cancer biology and novel therapeutics through to nanoelectronics. Distributed widely in the human genome as targets for regulating gene expression and chromosomal maintenance, they offer unique avenues for future cancer drug development. In particular, the recent advances in chemical and structural biology have enabled the construction of bespoke selective DNA based aptamers to be used as novel therapeutic agents and access to detailed structural models for structure based drug discovery. In this critical review, we will explore the important underlying characteristics of G-quadruplexes that make them functional, stable, and predictable nanoscaffolds. We will review the current structural database of folding topologies, molecular interfaces and novel interaction surfaces, with a consideration to their future exploitation in drug discovery, molecular biology, supermolecular assembly and aptamer design. In recent years the number of potential applications for G-quadruplex motifs has rapidly grown, so in this review we aim to explore the many future challenges and highlight where possible successes may lie. We will highlight the similarities and differences between DNA and RNA folded G-quadruplexes in terms of stability, distribution, and exploitability as small molecule targets. Finally, we will provide a detailed review of basic G-quadruplex geometry, experimental tools used, and a critical evaluation of the application of high-resolution structural biology and its ability to provide meaningful and valid models for future applications (255 references).
505 citations
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TL;DR: In an effort to encapsulate the breadth over which fluorescent biosensors have expanded, this work endeavored to assemble a comprehensive list of published engineered bios Sensors, and discusses many of the molecular designs utilized in their development.
Abstract: Cellular signaling networks are the foundation which determines the fate and function of cells as they respond to various cues and stimuli. The discovery of fluorescent proteins over 25 years ago enabled the development of a diverse array of genetically encodable fluorescent biosensors that are capable of measuring the spatiotemporal dynamics of signal transduction pathways in live cells. In an effort to encapsulate the breadth over which fluorescent biosensors have expanded, we endeavored to assemble a comprehensive list of published engineered biosensors, and we discuss many of the molecular designs utilized in their development. Then, we review how the high temporal and spatial resolution afforded by fluorescent biosensors has aided our understanding of the spatiotemporal regulation of signaling networks at the cellular and subcellular level. Finally, we highlight some emerging areas of research in both biosensor design and applications that are on the forefront of biosensor development.
313 citations