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Singh Chauhan S, Mohan Murari B. Fluorescence Spectroscopic Studies to Evaluate Binding Interaction between Hoechst 33258 and Bilirubin. J Fluoresc 2023:10.1007/s10895-023-03440-8. [PMID: 37728846 DOI: 10.1007/s10895-023-03440-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/12/2023] [Indexed: 09/21/2023]
Abstract
A detailed spectroscopic study (fluorescence, absorption, and lifetime) was conducted to gain insight into the nature of the binding interaction between fluorophore Hoechst33258 (H258) and jaundice marker Bilirubin (Br). The fluorescence emission of the H258 (Ex/Em = 340-502nm) showed a conc. dependent quenching in the presence of Br (1.25[Formula: see text]M to 10[Formula: see text]M). The Stern-Volmer constant demonstrated an upward curve depicting the occurrence of both static and dynamic quenching with an acquired value of K[Formula: see text] = 3.1x 10[Formula: see text] M[Formula: see text] and biomolecular quenching rate constant K[Formula: see text] = 8.6 x 10[Formula: see text] M[Formula: see text]S[Formula: see text]. The static quenching was evaluated using the sphere of action model and a sphere radius of 0.3nm indicated the presence of a static component in the quenching. The FRET analysis with overlap integral (J) = 1.4x10[Formula: see text] M[Formula: see text]cm[Formula: see text]nm[Formula: see text] and Foster Radius(R[Formula: see text]) = 26.82 Å with 59% efficiency suggested occurrence of dynamic quenching. Further studies with the time-resolved fluorescence also indicated the presence of dynamic quenching. The lifetime values of H258 reduced from 3.9ns to 0.5ns. Molecular docking studies further support both static and dynamic components in quenching. A non-covalent interaction of H258 with Br in the presence of HSA is predominantly characterized by H-bonding with residues Lys, Asn, Glu, Gln, and Br. The H258 and Br interaction was within the distance of 3.04 Å, which is in coherence with the sphere of action model (0.3nm) and Van-der-Waals along with hydrophobic interactions, which suggested both static and dynamic quenching. Thus, H258 can serve as an efficient fluorophore to monitor binding interactions and can be further exploited as a suitable probe for investigating conformational changes and detection of Br in subsequent studies.
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Affiliation(s)
- Srishti Singh Chauhan
- Department of Sensor and Biomedical Technology, School of Electronics Engineering, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - Bhaskar Mohan Murari
- Department of Sensor and Biomedical Technology, School of Electronics Engineering, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
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Can Karanlık C, Karanlık G, Erdoğmuş A. Water-Soluble Meso-Thienyl BODIPY Therapeutics: Synthesis, Characterization, Exploring Photophysicochemical and DNA/BSA Binding Properties. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Kalot G, Godard A, Busser B, Bendellaa M, Dalonneau F, Paul C, Le Guével X, Josserand V, Coll JL, Denat F, Bodio E, Goze C, Gautier T, Sancey L. Lipoprotein interactions with water-soluble NIR-II emitting aza-BODIPYs boost the fluorescence signal and favor selective tumor targeting. Biomater Sci 2022; 10:6315-6325. [PMID: 36149672 DOI: 10.1039/d2bm01271e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Following intravenous administration, the interaction of fluorescent exogenous molecules with circulating endogenous transporters can influence their photophysical properties as well as their fate and distribution, and possibly their recognition by different cell types. This type of interaction can be used to optimize the drug delivery but also the imaging properties of a compound of interest. In this study, we investigated the behavior of SWIR-WAZABY-01 fluorophore, a water-soluble aza-BODIPY dye emitting in the NIR-II region, both in vitro and in vivo. While the fluorescence emission of SWIR-WAZABY-01 was weak in aqueous solutions, it was intensely magnified in plasma (∼ ×30). Further analyses using lipoprotein gel electrophoresis and ultracentrifugation revealed interactions between SWIR-WAZABY-01 and plasma lipoproteins in vitro and ex vivo, in particular with LDL. The tumor uptake mechanism of SWIR-WAZABY-01 was investigated based on the presence of low-density lipoprotein (LDL) receptors and passive tumor uptake. Overall, we found that SWIR-WAZABY-01 interacts with lipoproteins enhancing their NIR-II fluorescence emission, and driving the tumor accumulation with regards to the expression of lipoprotein receptors (LDLR, SR-BI). Moreover, SWIR-WAZABY-01, by exploiting endogenous lipoproteins, arises as a new, potent and relevant tool to efficiently label LDL involved in pathologies.
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Affiliation(s)
- Ghadir Kalot
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U 1209, CNRS UMR 5309, 38000 Grenoble, France.
| | - Amélie Godard
- Institut de Chimie Moléculaire de l'Université de Bourgogne, Université Bourgogne Franche-Comté, CNRS UMR 6302, Dijon, France
| | - Benoit Busser
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U 1209, CNRS UMR 5309, 38000 Grenoble, France. .,Institut Universitaire de France (IUF), France.,Grenoble Alpes University Hospital (CHUGA), Grenoble, France
| | - Mohamed Bendellaa
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U 1209, CNRS UMR 5309, 38000 Grenoble, France.
| | - Fabien Dalonneau
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U 1209, CNRS UMR 5309, 38000 Grenoble, France.
| | - Catherine Paul
- Laboratoire d'Immunologie et Immunothérapie des Cancers, EPHE, PSL Research University, Université de Bourgogne, Dijon, France
| | - Xavier Le Guével
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U 1209, CNRS UMR 5309, 38000 Grenoble, France.
| | - Véronique Josserand
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U 1209, CNRS UMR 5309, 38000 Grenoble, France. .,OPTIMAL, Small animal Imaging Platform, 38000 Grenoble, France
| | - Jean-Luc Coll
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U 1209, CNRS UMR 5309, 38000 Grenoble, France.
| | - Franck Denat
- Institut de Chimie Moléculaire de l'Université de Bourgogne, Université Bourgogne Franche-Comté, CNRS UMR 6302, Dijon, France
| | - Ewen Bodio
- Institut de Chimie Moléculaire de l'Université de Bourgogne, Université Bourgogne Franche-Comté, CNRS UMR 6302, Dijon, France
| | - Christine Goze
- Institut de Chimie Moléculaire de l'Université de Bourgogne, Université Bourgogne Franche-Comté, CNRS UMR 6302, Dijon, France
| | - Thomas Gautier
- INSERM UMR1231, UFR Sciences de santé, Université Bourgogne Franche-Comté, Dijon, France
| | - Lucie Sancey
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U 1209, CNRS UMR 5309, 38000 Grenoble, France.
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Spanning BODIPY fluorescence with self-assembled micellar clusters. Colloids Surf B Biointerfaces 2022; 216:112532. [PMID: 35525227 DOI: 10.1016/j.colsurfb.2022.112532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/10/2022] [Accepted: 04/28/2022] [Indexed: 11/23/2022]
Abstract
BODIPY dyes possess favorable optical properties for a variety of applications including in vivo and in vitro diagnostics. However, their utilization might be limited by their water insolubility and incompatibility with chemical modifications, resulting in low aggregation stability. Here, we outline the route for addressing this issue. We have demonstrated two approaches, based on dye entrapment in micellar coordination clusters (MCCs); this provides a general solution for water solubility as well as aggregation stability of the seven BODIPY derivatives. These derivatives have various bulky aromatic substituents in the 2,3,5,6- and meso-positions and can rotate relative to a dipyrrin core, which also provides molecular rotor properties. The molecular structural features and the presence of aromatic groups allows BODIPY dyes to be used as "supporting molecules", thus promoting micelle-micelle interaction and micellar network stabilization. In the second approach, self-micellization, following BODIPY use, leads to MCC formation without the use of any mediators, including chelators and/or metal ions. In both approaches, BODIPY exhibits an excellent optical response, at a concentration beyond its solubilization limit in aqueous media and without undesired crystallization. The suggested approaches represent systems used to encapsulate BODIPY in a capsule-based surfactant environment, enabling one to track the aggregation of BODIPY; these approaches represent an alternative system to study and apply BODIPY's molecular rotor properties. The stabilized compounds, i.e., the BODIPY-loaded MCCs, provide a unique feature of permeability to hydrophilic ligand-switching proteins such as BSA; they exhibit a bright "turn-on" fluorescence signal within the clusters via macromolecular complexation, thus expanding the possibilities of water-soluble BODIPY-loaded MCCs utilization for functional indicators.
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Klimenko IV, Ksenofontov AA, Klimenko MS, Antina EV, Berezin MB, Lobanov AV. A New Water-Soluble Form of BODIPY Luminophores Based on Cremophor®: Synthesis, Spectral Properties, and in vitro Study. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2021. [DOI: 10.1134/s199079312101019x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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