Photoconversion of an anthraquinone derivative in the presence of human serum albumin

Isfahani, Fatemeh; Ajloo, Davood; Kanaani, Ayoub; Saboury, Ali Akbar

doi:10.1016/j.saa.2018.07.044

Cited by 5 publications

(4 citation statements)

References 39 publications

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“…The implemented Lamarckian genetic algorithm (LGA) in AutoDock was adopted to check out the feasible conformation of the tetraoxanes upon the binding with HSA. Docking of both TO1–2 with whole of the protein was achieved in order to ascertain the comparative affinity of binding sites of proteins for these ligands, adopting the identical grid size of 256 Å along both three ( X , Y , and Z ) axes, covering all the protein and grid spacing of 0.375 Å . By docking results, 50 conformers were assessed and the conformer having lowest binding energy was chosen for further examination (Tables S1 and S2, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…Docking of both TO1−2 with whole of the protein was achieved in order to ascertain the comparative affinity of binding sites of proteins for these ligands, adopting the identical grid size of 256 Å along both three (X, Y, and Z) axes, covering all the protein and grid spacing of 0.375 Å. 29 By docking results, 50 conformers were assessed and the conformer having lowest binding energy was chosen for further examination (Tables S1 and S2, Supporting Information). The results obtained after visualizing using PyMol are shown in Figure 9.…”

Section: Resultsmentioning

confidence: 99%

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Interaction between the Antimalarial Drug Dispiro-Tetraoxanes and Human Serum Albumin: A Combined Study with Spectroscopic Methods and Computational Studies

Yadav

Sharma

et al. 2020

ACS Omega

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Dispiro-tetraoxanes, a class of fully synthetic peroxides which can be used as an antiplasmodial remedy for multiple drug-resistant strains of Plasmodium falciparum, were selected for the interaction study with human serum albumin (HSA). The insight into the interaction of the two chemically synthesized, most potent antimalarial tetraoxane analogues (TO1 and TO2) and HSA has been scrutinized using distinct spectroscopic techniques such as. UV–visible absorption, fluorescence, time-resolved fluorescence, and circular dichroism (CD). Fluorescence quenching experiments divulged the static mode of quenching and binding constants obtained (∼104) indicated the moderate affinity of the analogues to HSA. CD confirmed the conformational changes in the serum albumin upon interaction with these analogues. Molecular docking validated the empirical results as these two analogues bind through hydrophobic interactions and hydrogen bonding with HSA. Present work first defined the binding mechanism of dispiro-tetraoxanes with HSA and thus provides a fresh insight into the drug transportation and metabolism. The present study could direct toward designing more potent tetraoxane analogues for their use in the biomedical field.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Interaction between the Antimalarial Drug Dispiro-Tetraoxanes and Human Serum Albumin: A Combined Study with Spectroscopic Methods and Computational Studies

Yadav

Sharma

et al. 2020

ACS Omega

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“…Structurally, HSA consists of a variety of hydrophobic pockets capable of binding small molecules such as lipids . Because of its unique structural features and good biocompatibility, HSA has been extensively used to construct theranostic materials for biomedical applications. , We and others have recently shown that HSA is suitable for accommodating fluorescent and photochromic dyes, enhancing fluorescence emission and photochromic activity, respectively. We began with the synthesis of a mannose-based glycoprobe (Figure a and Scheme S1) through click conjugation between a PEG-linked azido-mannoside and an alkynyl dicyanomethylene-4 H -pyran (DCM) dye, which has been shown to bind the IA site of HSA .…”

Section: Resultsmentioning

confidence: 99%

Self-Assembled 2D Glycoclusters for the Targeted Delivery of Theranostic Agents to Triple-Negative Breast Cancer Cells

Cai

Gao

et al. 2019

ACS Appl. Mater. Interfaces

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Triple-negative breast cancer (TNBC) is a devastating disease worldwide, for which targeted imaging and therapeutic agents remain elusive. There has been growing awareness that carbohydrates are valuable as drug candidates and targeting agents for a variety of human diseases, including cancers that overexpress carbohydrate receptors on the cell surface. Here, we develop a twodimensional (2D) glycocluster by means of simple, stepwise selfassembly for the targeted delivery of theranostic agents to TNBC cells that express mannose receptors (MRs) on the cell surface. Human serum albumin, which contains a variety of hydrophobic pockets capable of accommodating small molecules, was used to simultaneously encapsulate a mannose-based glycoprobe and a commercial photosensitizer (i.e., Ce6). The multicomponent "neoglycoprotein" formed was used to self-assemble with 2D MnO 2 , producing 2D glycoclusters, which could be selectively internalized by a TNBC cell line (MDA-MB-231) as facilitated by binding to the transmembrane MR. The intracellular degradation of the 2D MnO 2 backbone by biothiols then released Ce6 for cell imaging and, subsequently, photodynamic therapy. This study provides insights into the development of carbohydrate-based materials for targeted, stimuli-responsive theranostics of TNBC.

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“…The Rubiaceae genus, to which M. lucida belong, has a lot of anthraquinone compounds, particularly in the roots. Natural anthraquinones exhibit a wide range of bioactivities, including antioxidant, anticancer, anti-inflammatory, immunosuppressive, diuretic, cathartic, laxative, antimicrobial, vasorelaxant, and phytoestrogen activities, according to research [9][10][11][12][13][14][15]. This has aroused the interest of researchers to work on them as potential drugs or drug lead for the prevention and treatment wide range of diseases.…”

Section: Discussionmentioning

confidence: 99%

Identification and quantification of bioactive compounds indifferent extracts of <i>morinda lucida</i> benth (rubiaceae) root using GC–MS analysis

Adekunle,

Faboro,

Lajide

2023

J. Nig. Soc. Phys. Sci.

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This study aims to analyze and describe the chemical constituents of various crude extracts derived from the root of Morinda lucida Benth (Rubiaceae), an ethnomedicinal plant commonly found in Nigeria. The root of Morinda lucida was dried at room temperature and pulverized into powder. The soxhlet extraction technique was used with solvents of different polarities, namely hexane, chloroform, and methanol, to obtain three distinct extracts. Subsequently, gas chromatography-mass spectrometry analysis was carried out on the extracts. A total of 69 compounds were identified from the different extracts of M. lucida root. The hexane extract had 3 major compounds and 8 minor ones, with diethyl phthalate being the most prominent with 87.10% peak area. The chloroform extract had 24 compounds, with phthalic acid, 2-Ethylhexyl isohexyl ester being the highest with 16.61% peak area. Six of these compounds had more than 5%, while the remaining 18 ranged from 2.50% to 1.00%. The ethanol extract contained 36 compounds, with 6 compounds being greater than 5% and the remaining 30 less than 5%. The highest percentage in the ethanol extract was 2-Pyrrolidinone, 1-methyl-, at 16.05%. In terms of the biological and pharmacology benefits, these chemicals are regarded as crucial. Also, each of the three extracts has a few similarities in their physicochemical properties that can be related to the natural substances that are abundantly found in M. lucida root. The GC-MS analysis of different extracts of M. lucida revealed the presence of several bioactive compounds that have potential therapeutic properties.

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Photoconversion of an anthraquinone derivative in the presence of human serum albumin

Cited by 5 publications

References 39 publications

Interaction between the Antimalarial Drug Dispiro-Tetraoxanes and Human Serum Albumin: A Combined Study with Spectroscopic Methods and Computational Studies

Interaction between the Antimalarial Drug Dispiro-Tetraoxanes and Human Serum Albumin: A Combined Study with Spectroscopic Methods and Computational Studies

Self-Assembled 2D Glycoclusters for the Targeted Delivery of Theranostic Agents to Triple-Negative Breast Cancer Cells

Identification and quantification of bioactive compounds indifferent extracts of <i>morinda lucida</i> benth (rubiaceae) root using GC–MS analysis

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