Unique development of a new dual application probe for selective detection of antiparallel G-quadruplex sequences.
| Title: | Unique development of a new dual application probe for selective detection of antiparallel G-quadruplex sequences. |
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| Authors: | Babagond V; Research Centre, Department of Chemistry, Karnatak University's Karnatak Science College Dharwad, Karnataka, India. kskatagi69@gmail.com.; Katagi K; Research Centre, Department of Chemistry, Karnatak University's Karnatak Science College Dharwad, Karnataka, India. kskatagi69@gmail.com.; Pandith A; International Ph.D. Program in Biomedical Engineering (IPBME), College of Biomedical Engineering, Taipei Medical University, Taipei City 11031, Taiwan, Republic of China.; Akki M; Research Centre, Department of Chemistry, Karnatak University's Karnatak Science College Dharwad, Karnataka, India. kskatagi69@gmail.com.; Jaggal A; Research Centre, Department of Chemistry, Karnatak University's Karnatak Science College Dharwad, Karnataka, India. kskatagi69@gmail.com. |
| Source: | The Analyst [Analyst] 2023 Oct 23; Vol. 148 (21), pp. 5507-5513. Date of Electronic Publication: 2023 Oct 23. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 0372652 Publication Model: Electronic Cited Medium: Internet ISSN: 1364-5528 (Electronic) Linking ISSN: 00032654 NLM ISO Abbreviation: Analyst Subsets: MEDLINE |
| Imprint Name(s): | Publication: Cambridge : Royal Society of Chemistry; Original Publication: London : Chemical Society |
| MeSH Terms: | G-Quadruplexes*; Fluorescent Dyes/chemistry ; Humans ; Spectrometry, Fluorescence |
| Abstract: | G-Quadruplex (G4) structures play vital roles in many biological processes; consequently, they have been implicated in various human diseases like cancer, Alzheimer's disease etc. The selective detection of G4 DNA structures is of great interest for understanding their roles and biological functions. Hence, development of multifunctional fluorescent probes is indeed essential. In this investigation, we have synthesized a quinolinium based dual application probe (QnMF) that presents molecular rotor properties. This dual application molecular rotor is able to detect selectively antiparallel G4 sequences (22AG in 100 mM NaCl) through a turn-on response over other G4 topologies. The QnMF also contains a distinct fluorine-19 that undergoes a significant chemical shift in response to microenvironmental changes around the molecule when bound to G4 structures. The probe QnMF exhibits significantly brighter fluorescence emissions in glycerol (ε × ϕ = 2800 cm-1 M-1) and relatively less brighter fluorescence emissions in methanol (ε × ϕ = 40.5 cm-1 M-1). The restricted rotation inherent property of the QnMF molecular rotor is responsible for brighter fluorescence and leads to enhancement in the fluorescence upon binding to the G4 structure. Overall, the probe's dual detection method makes it useful for monitoring the G4 structures that are abundant and plays a vital role in living organisms. |
| Substance Nomenclature: | 0 (Fluorescent Dyes) |
| Entry Date(s): | Date Created: 20231004 Date Completed: 20231102 Latest Revision: 20231102 |
| Update Code: | 20260130 |
| DOI: | 10.1039/d3an01109g |
| PMID: | 37789760 |
| Database: | MEDLINE |
Journal Article