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Pinteala M, Abadie MJM, Rusu RD. Smart Supra- and Macro-Molecular Tools for Biomedical Applications. MATERIALS 2020; 13:ma13153343. [PMID: 32727155 PMCID: PMC7435709 DOI: 10.3390/ma13153343] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 12/28/2022]
Abstract
Stimuli-responsive, “smart” polymeric materials used in the biomedical field function in a bio-mimicking manner by providing a non-linear response to triggers coming from a physiological microenvironment or other external source. They are built based on various chemical, physical, and biological tools that enable pH and/or temperature-stimulated changes in structural or physicochemical attributes, like shape, volume, solubility, supramolecular arrangement, and others. This review touches on some particular developments on the topic of stimuli-sensitive molecular tools for biomedical applications. Design and mechanistic details are provided concerning the smart synthetic instruments that are employed to prepare supra- and macro-molecular architectures with specific responses to external stimuli. Five major themes are approached: (i) temperature- and pH-responsive systems for controlled drug delivery; (ii) glycodynameric hydrogels for drug delivery; (iii) polymeric non-viral vectors for gene delivery; (iv) metallic nanoconjugates for biomedical applications; and, (v) smart organic tools for biomedical imaging.
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Affiliation(s)
- Mariana Pinteala
- “Petru Poni” Institute of Macromolecular Chemistry, Romanian Academy, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (M.P.); (M.J.M.A.)
| | - Marc J. M. Abadie
- “Petru Poni” Institute of Macromolecular Chemistry, Romanian Academy, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (M.P.); (M.J.M.A.)
- Institute Charles Gerhardt Montpellier, Bat 15, CC 1052, University of Montpellier, 34095 Montpellier, France
| | - Radu D. Rusu
- “Petru Poni” Institute of Macromolecular Chemistry, Romanian Academy, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (M.P.); (M.J.M.A.)
- Correspondence: ; Tel.: +40-232-217454
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Kundu P, Das S, Chattopadhyay N. Managing efficacy and toxicity of drugs: Targeted delivery and excretion. Int J Pharm 2019; 565:378-390. [DOI: 10.1016/j.ijpharm.2019.04.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 01/03/2023]
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Ray A, Das S, Chattopadhyay N. Aggregation of Nile Red in Water: Prevention through Encapsulation in β-Cyclodextrin. ACS OMEGA 2019; 4:15-24. [PMID: 31459307 PMCID: PMC6649296 DOI: 10.1021/acsomega.8b02503] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 11/15/2018] [Indexed: 05/28/2023]
Abstract
The present work, based on various spectroscopic investigations, vividly demonstrates the self-association of Nile red (NR) in aqueous medium. The rapid decrease in the absorbance as well as emission of NR in water bears the signature of the aggregation process. Appearance of a new blue-shifted absorption band in addition to the original one and a drastic decrease in the emission intensity imply that the aggregation is of H-type. Poor solubility of NR in water, hydrophobic interaction, and the planar structure of the dye are ascribed to favor the formation of the aggregate in the aqueous medium. Absorption-based kinetic studies reveal the aggregation process to be second order, thereby establishing the aggregate to be a dimer. Similar kinetic profiles of the absorbance of NR in the presence and absence of light confirm that the aggregation process is not photoassisted. The presence of an isosbestic point in the absorbance spectra and an isoemissive point in the time-resolved area normalized emission spectra bears the evidence of equilibrium between the dimeric and the monomeric species of NR in the ground state as well as in the photoexcited state. Encapsulation of the monomer of NR within the hydrophobic cavity of β-cyclodextrin is demonstrated to prevent the aggregation process.
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Vurgun N, Nitz M. Highly Functionalized β-Cyclodextrins by Solid-Supported Synthesis. Chemistry 2018; 24:4459-4467. [PMID: 29389050 DOI: 10.1002/chem.201800028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Indexed: 12/26/2022]
Abstract
Using covalent capture, a high yielding selective mono-functionalization of heptakis-[6-deoxy-6-(2-aminoethylsulfanyl)]-β-CD with a 5-mercaptopentyl functional group has been achieved. Here, we demonstrate the immobilization of the mono-thiol functionalized β-CD on PEGA resin via a disulfide bond, enabling solid-phase elaboration of the remaining six primary amines. To showcase the potential of this method, the amines were elaborated to tripeptides through standard Fmoc-peptide chemistry. A small library of CD-tripeptide conjugates was generated which, when reduced from the solid support, could be tagged at the released thiol with an environmentally sensitive fluorophore. The resulting library of sensors showed potential for the differential sensing of various bile salts. The described methodology provides a rapid and versatile route to synthesize highly functionalized libraries of CD derivatives that may be tailored towards applications in sensing, catalysis, and multivalent displays.
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Affiliation(s)
- Nesrin Vurgun
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Mark Nitz
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
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Pricope G, Ursu EL, Sardaru M, Cojocaru C, Clima L, Marangoci N, Danac R, Mangalagiu II, Simionescu BC, Pinteala M, Rotaru A. Novel cyclodextrin-based pH-sensitive supramolecular host–guest assembly for staining acidic cellular organelles. Polym Chem 2018. [DOI: 10.1039/c7py01668a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel supramolecular approach for the preparation of new non-toxic systems for staining cellular organelles is described.
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Karar M, Paul S, Mallick A, Majumdar T. Shipment of a photodynamic therapy agent into model membrane and its controlled release: A photophysical approach. Chem Phys Lipids 2017; 210:122-128. [PMID: 29056528 DOI: 10.1016/j.chemphyslip.2017.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/25/2017] [Accepted: 10/18/2017] [Indexed: 01/06/2023]
Abstract
Harmine, an efficient cancer cell photosensitizer (PS), emits intense violet color when it is incorporated in well established self assembly based drug carrier formed by cationic surfactants of identical positive charge of head group but varying chain length, namely, dodecyltrimethylammonium bromide (DTAB), tetradecyltrimethylammonium bromide (TTAB) and cetyltrimethylammonium bromide (CTAB). Micelle entrapped drug emits in the UV region when it interacts with non-toxic β-cyclodextrin (β-CD). Inspired by these unique fluorescence/structural switching properties of the anticancer drug, in the present work we have monitored the interplay of the drug between micelles and non-toxic β-CDs. We have observed that the model membranes formed by micelles differing in their hydrophobic chain length interact with the drug differently. Variation in the surfactant chain length plays an important role for structural switching i.e. in choosing a particular structural form of the drug that will be finally presented to their targets. The present study shows that in case of necessity, the bound drug molecule can be removed from its binding site in a controlled manner by the use of non-toxic β-CD and it is exploited to serve a significant purpose for the removal of excess/unused adsorbed drugs from the model cell membranes. We believe this kind of β-CD driven translocation of drugs monitored by fluorescence switching may find possible applications in controlled release of the drug inside cells.
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Affiliation(s)
- Monaj Karar
- Department of Chemistry, University of Kalyani, Nadia, West Bengal, 741235, India
| | - Suvendu Paul
- Department of Chemistry, University of Kalyani, Nadia, West Bengal, 741235, India
| | - Arabinda Mallick
- Department of Chemistry, Kashipur Michael Madhusudan Mahavidyalaya, Purulia, West Bengal, 723132, India.
| | - Tapas Majumdar
- Department of Chemistry, University of Kalyani, Nadia, West Bengal, 741235, India.
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Patel BK, Dasmandal S, Mahapatra A. Unraveling the binding of phenolphthalein with serum protein and releasing by β-cyclodextrin. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhdanova NG, Maksimov EG, Arutyunyan AM, Fadeev VV, Shirshin EA. Tyrosine fluorescence probing of conformational changes in tryptophan-lacking domain of albumins. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:223-229. [PMID: 27918933 DOI: 10.1016/j.saa.2016.11.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 11/17/2016] [Accepted: 11/22/2016] [Indexed: 06/06/2023]
Abstract
We addressed the possibility of using tyrosine (Tyr) fluorescence for monitoring conformational changes of proteins which are undetectable via tryptophan (Trp) fluorescence. The model objects, human (HSA) and bovine (BSA) serum albumins, contain one and two Trp residues, respectively, while Tyr is more uniformly distributed over their structure. The results of the investigation of albumins interaction with ethanol using intrinsic Trp and Tyr steady-state and time-resolved picosecond fluorescence indicated the presence of an intermediate at 10% (v/v) of ethanol in solution, that was supported by the results of extrinsic fluorescence measurements with the Nile Red dye. Based on the comparison of HSA and BSA Trp and Tyr fluorescence, it was suggested that conformational changes at low ethanol concentration are located in the domain III of albumins, which lacks tryptophan residues. The sensitivity of Tyr fluorescence to domain III alterations was further verified by studying albumins interaction with GdnHCl.
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Affiliation(s)
- N G Zhdanova
- Department of Physics, M.V. Lomonosov Moscow State University, 119991, Russia.
| | - E G Maksimov
- Department of Biology, M.V. Lomonosov Moscow State University, 119991, Russia
| | - A M Arutyunyan
- A.N. Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, 119991, Russia
| | - V V Fadeev
- Department of Physics, M.V. Lomonosov Moscow State University, 119991, Russia
| | - E A Shirshin
- Department of Physics, M.V. Lomonosov Moscow State University, 119991, Russia.
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Ghosh S, Mitra AK, Pal U, Basu S, Saha C. Evidence of two structurally related solvatochromic probes complexed with β-cyclodextrin by using spectroscopic methods. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.10.097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wang MH, Jeong JH, Kim JC. Thermo-triggerable self-assembly comprising cinnamoyl polymeric β cyclodextrin and cinnamoyl Pluronic F127. Colloids Surf B Biointerfaces 2016; 142:148-158. [PMID: 26952358 DOI: 10.1016/j.colsurfb.2016.02.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/19/2016] [Accepted: 02/23/2016] [Indexed: 10/22/2022]
Abstract
Thermo-triggerable self-assembly was prepared by co-dissolving cinnamoyl Pluronic F127 (CinPlu) and cinnamoyl polymeric β cyclodextrin (CinPβCD) in an aqueous phase. On TEM photo, the CinPlu/CinPβCD self-assembly was 100-200nm in diameter. The specific loading of Nile red (NR) in the assembly was calculated to be 5.5% (wt NR/wt polymer), and the molar ratio of NR to βCD residue in the assembly was about 0.89:1. No significant release of NR from the assembly was observed at 10°C and 20°C. However, when the temperature was raised to 30°C, 40°C, 50°C, and 60°C, the cumulative release amount in 5min was 17%, 25%, 32%, and 52%, respectively. The specific loading of doxorubicin (DOX) in the assembly was about 6.8% (wt DOX/wt polymer) (corresponding to the molar ratio of DOX to βCD residue was about 0.41:1). The DOX release from the assembly was proportional to the temperature of release medium. NR and DOX were likely to be expelled out of the cavity of βCD residue by the interaction of the thermally hydrophobicized Pluronic F127 chain (molecular piston) and the cavity of βCD residue (cylinder). After 4h-incubation with KB cell, DOX loaded in CinPlu/CinPβCD self-assembly was found to be internalized into the cancer cell more than free DOX, observed on a confocal laser scanning microscope and a fluorescence activated cell sorter. CinPlu/CinPβCD self-assembly enhanced the in vitro anti-cancer activity of DOX against KB cell without increasing significantly the in vitro toxicity of DOX against Raw264.7 cell.
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Affiliation(s)
- Min Hui Wang
- Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University, 192-1, Hyoja 2 dong, Chuncheon, Kangwon-do 200-701, Republic of Korea
| | - Jae Hyun Jeong
- Department of Chemical Engineering, Soongsil University, Seoul 156-743, Republic of Korea
| | - Jin-Chul Kim
- Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University, 192-1, Hyoja 2 dong, Chuncheon, Kangwon-do 200-701, Republic of Korea.
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Gharat PM, Joseph S, Sundararajan M, Dutta Choudhury S, Pal H. Contrasting tunability of quinizarin fluorescence with p-sulfonatocalix[4,6]arene hosts. Org Biomol Chem 2016; 14:11480-11487. [DOI: 10.1039/c6ob02186g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study reveals the contrasting modulations in the photophysics of quinizarin on interaction with p-sulfonatocalix[n]arenes.
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Affiliation(s)
- Poojan Milan Gharat
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Sindhu Joseph
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Mahesh Sundararajan
- Theoretical Chemistry Section
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | | | - Haridas Pal
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
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Ghosh S, Kundu P, Chattopadhyay N. DNA induced sequestration of a bioactive cationic fluorophore from the lipid environment: A spectroscopic investigation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 154:118-25. [DOI: 10.1016/j.jphotobiol.2015.11.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 10/29/2015] [Accepted: 11/01/2015] [Indexed: 12/28/2022]
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Kundu P, Ghosh S, Jana B, Chattopadhyay N. Binding interaction of differently charged fluorescent probes with egg yolk phosphatidylcholine and the effect of β-cyclodextrin on the lipid-probe complexes: a fluorometric investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 142:15-24. [PMID: 25698439 DOI: 10.1016/j.saa.2015.01.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/20/2015] [Indexed: 06/04/2023]
Abstract
Interaction of cationic phenosafranin (PSF), anionic 8-anilino-1-naphthalene sulfonate (ANS) and non-ionic nile red (NR) have been studied with the zwitterionic phospholipid, egg yolk L-α-phosphatidylcholine (EYPC). The study reveals discernible binding interactions of the three fluorescent probes with the EYPC lipid vesicle. Once the binding of the probes with the lipid is established, the effect of cyclic oligosaccharide, β-cyclodextrin (β-CD), on these lipid bound probes has been investigated. Different fluorometric techniques suggest that addition of β-CD to the probe-lipid complexes leads to the release of the probes from the lipid medium through the formation of probe-β-CD inclusion complexes. A competitive binding of the probes between β-cyclodextrin and the lipid is ascribed to be responsible for the effect. This provides an easy avenue for the removal of the probe molecules from the lipid environment. Extension of this work with drug molecules in cell membranes is expected to give rise to a strategy for the removal of adsorbed drugs from the cell membranes by the use of non-toxic β-cyclodextrin.
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Affiliation(s)
- Pronab Kundu
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Saptarshi Ghosh
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
| | - Barnali Jana
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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Kundu P, Ghosh S, Chattopadhyay N. Exploration of the binding interaction of a potential nervous system stimulant with calf-thymus DNA and dissociation of the drug–DNA complex by detergent sequestration. Phys Chem Chem Phys 2015; 17:17699-709. [DOI: 10.1039/c5cp02101d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The binding interaction of a potential nervous system stimulant with calf-thymus DNA has been divulged and dissociation of the drug–DNA complex has been achieved by the detergent sequestration method.
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Affiliation(s)
- Pronab Kundu
- Department of Chemistry
- Jadavpur University
- Kolkata – 700 032
- India
| | - Saptarshi Ghosh
- Department of Chemistry
- Jadavpur University
- Kolkata – 700 032
- India
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