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Skwarecki AS, Martynow D, Milewska MJ, Milewski S. Molecular Umbrella as a Nanocarrier for Antifungals. Molecules 2021; 26:molecules26185475. [PMID: 34576946 PMCID: PMC8465315 DOI: 10.3390/molecules26185475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/04/2021] [Accepted: 09/06/2021] [Indexed: 11/20/2022] Open
Abstract
A molecular umbrella composed of two O-sulfated cholic acid residues was applied for the construction of conjugates with cispentacin, containing a “trimethyl lock” (TML) or o-dithiobenzylcarbamoyl moiety as a cleavable linker. Three out of five conjugates demonstrated antifungal in vitro activity against C. albicans and C. glabrata but not against C. krusei, with MIC90 values in the 0.22–0.99 mM range and were not hemolytic. Antifungal activity of the most active conjugate 24c, containing the TML–pimelate linker, was comparable to that of intact cispentacin. A structural analogue of 24c, containing the Nap-NH2 fluorescent probe, was accumulated in Candida cells, and TML-containing conjugates were cleaved in cell-free extract of C. albicans cells. These results suggest that a molecular umbrella can be successfully applied as a nanocarrier for the construction of cleavable antifungal conjugates.
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Affiliation(s)
- Andrzej S. Skwarecki
- Department of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Gdańsk University of Technology, 80-233 Gdańsk, Poland; (A.S.S.); (D.M.)
| | - Dorota Martynow
- Department of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Gdańsk University of Technology, 80-233 Gdańsk, Poland; (A.S.S.); (D.M.)
| | - Maria J. Milewska
- Department of Organic Chemistry and BioTechMed Centre, Gdańsk University of Technology, 80-233 Gdańsk, Poland;
| | - Sławomir Milewski
- Department of Pharmaceutical Technology and Biochemistry and BioTechMed Centre, Gdańsk University of Technology, 80-233 Gdańsk, Poland; (A.S.S.); (D.M.)
- Correspondence: ; Tel.: +48-58-347-2107
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Bunker A, Róg T. Mechanistic Understanding From Molecular Dynamics Simulation in Pharmaceutical Research 1: Drug Delivery. Front Mol Biosci 2020; 7:604770. [PMID: 33330633 PMCID: PMC7732618 DOI: 10.3389/fmolb.2020.604770] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/02/2020] [Indexed: 12/12/2022] Open
Abstract
In this review, we outline the growing role that molecular dynamics simulation is able to play as a design tool in drug delivery. We cover both the pharmaceutical and computational backgrounds, in a pedagogical fashion, as this review is designed to be equally accessible to pharmaceutical researchers interested in what this new computational tool is capable of and experts in molecular modeling who wish to pursue pharmaceutical applications as a context for their research. The field has become too broad for us to concisely describe all work that has been carried out; many comprehensive reviews on subtopics of this area are cited. We discuss the insight molecular dynamics modeling has provided in dissolution and solubility, however, the majority of the discussion is focused on nanomedicine: the development of nanoscale drug delivery vehicles. Here we focus on three areas where molecular dynamics modeling has had a particularly strong impact: (1) behavior in the bloodstream and protective polymer corona, (2) Drug loading and controlled release, and (3) Nanoparticle interaction with both model and biological membranes. We conclude with some thoughts on the role that molecular dynamics simulation can grow to play in the development of new drug delivery systems.
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Affiliation(s)
- Alex Bunker
- Division of Pharmaceutical Biosciences, Drug Research Program, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Tomasz Róg
- Department of Physics, University of Helsinki, Helsinki, Finland
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Skwarecki AS, Nowak MG, Milewska MJ. Synthetic strategies in construction of organic low molecular-weight carrier-drug conjugates. Bioorg Chem 2020; 104:104311. [PMID: 33142423 DOI: 10.1016/j.bioorg.2020.104311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/31/2020] [Accepted: 09/20/2020] [Indexed: 12/30/2022]
Abstract
Inefficient transportation of polar metabolic inhibitors through cell membranes of eukaryotic and prokaryotic cells precludes their direct use as drug candidates in chemotherapy. One of the possible solutions to this problem is application of the 'Trojan horse' strategy, i.e. conjugation of an active substance with a molecular carrier of organic or inorganic nature, facilitating membrane penetration. In this work, the synthetic strategies used in rational design and preparation of conjugates of bioactive agents with three types of organic low molecular-weight carriers have been reviewed. These include iron-chelating agents, siderophores and cell-penetrating peptides. Moreover, a less known but very promising "molecular umbrella" conjugation strategy has been presented. Special attention has been paid on appropriate linking strategies, especially these allowing intracellular drug release after internalisation of a conjugate.
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Affiliation(s)
- Andrzej S Skwarecki
- Department of Pharmaceutical Technology and Biochemistry, Gdańsk University of Technology, 11/12 Gabriela Narutowicza Street, 80-233 Gdańsk, Poland.
| | - Michał G Nowak
- Department of Organic Chemistry, Gdańsk University of Technology, 11/12 Gabriela Narutowicza Street, 80-233 Gdańsk, Poland
| | - Maria J Milewska
- Department of Organic Chemistry, Gdańsk University of Technology, 11/12 Gabriela Narutowicza Street, 80-233 Gdańsk, Poland
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Zhang S, Liu L, Duan G, Zhao L, Liu S, Zhou B, Yang Z. Cytotoxicity of C 2N Originating from Oxidative Stress Instead of Membrane Stress. ACS APPLIED MATERIALS & INTERFACES 2019; 11:34575-34585. [PMID: 31469275 DOI: 10.1021/acsami.9b06713] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Two-dimensional (2D) nanomaterials have shown promising potential in a wide range of biomedical applications. Nevertheless, the rapid advances in this field recently have also evoked growing concerns about their toxic effects on humans and the environment. Herein, we systematically investigate the potential cytotoxicity of C2N nanosheets, a newly emerging 2D nitrogenized graphene with uniform holes in the basal plane. Our in vitro experiments show that C2N is toxic to human umbilical vein/vascular endothelium cells. The further combined experimental and theoretical studies unravel that the cytotoxicity of C2N mainly originates from its oxidative capability toward the antioxidant molecules, leading to excessive accumulation of reactive oxygen species in cells. Compared with graphene oxide, C2N exerts a relatively milder cytotoxicity, and importantly, this novel material shows negligible physical destruction effects on cell membranes, suggesting that C2N might be a potential alternative to graphene and its derivatives in biomedical research. This work sheds light on the cytotoxicity of C2N nanosheets and the underlying mechanism, which is crucial for the future utilization of this 2D nanomaterial in related biomedical fields.
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Affiliation(s)
- Shitong Zhang
- Institute of Quantitative Biology and Medicine, State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions , Soochow University , Jiangsu 215123 , China
| | - Lu Liu
- Institute of Quantitative Biology and Medicine, State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions , Soochow University , Jiangsu 215123 , China
- Henan Provincial Key Laboratory for Kidney Disease and Immunology , Henan Provincial People's Hospital , Zhengzhou 450003 , Henan , China
| | - Guangxin Duan
- Institute of Quantitative Biology and Medicine, State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions , Soochow University , Jiangsu 215123 , China
| | - Lin Zhao
- Institute of Quantitative Biology and Medicine, State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions , Soochow University , Jiangsu 215123 , China
| | - Shengtang Liu
- Institute of Quantitative Biology and Medicine, State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions , Soochow University , Jiangsu 215123 , China
| | - Bo Zhou
- School of Electronic Engineering , Chengdu Technological University , Chengdu 611730 , China
| | - Zaixing Yang
- Institute of Quantitative Biology and Medicine, State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions , Soochow University , Jiangsu 215123 , China
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Skwarecki AS, Milewski S, Schielmann M, Milewska MJ. Antimicrobial molecular nanocarrier–drug conjugates. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:2215-2240. [DOI: 10.1016/j.nano.2016.06.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/17/2016] [Accepted: 06/06/2016] [Indexed: 01/07/2023]
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Carrette LLG, Morii T, Madder A. Peptidosteroid Tweezers Revisited: DNA Binding Through an Optimised Design. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301854] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Janout V, Cline LL, Feuston BP, Klein L, O'Brien A, Tucker T, Yuan Y, O'Neill-Davis LA, Peiffer RL, Nerurkar SS, Jadhav V, Tellers DM, Regen SL. Molecular umbrella conjugate for the ocular delivery of siRNA. Bioconjug Chem 2014; 25:197-201. [PMID: 24433067 PMCID: PMC4334295 DOI: 10.1021/bc400506m] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
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The synthesis, computer modeling,
and biological activity of an
octawalled molecular umbrella short interfacing RNA (siRNA) conjugate
is described. This molecular umbrella–siRNA conjugate exhibited
mRNA knockdown activity in vitro in the absence of
a transfection reagent. Evaluation of this molecular umbrella conjugate in vivo, using the rat eye via intravitreal injection, resulted
in sequence specific mRNA knockdown in the retina
with no obvious signs of toxicity, as judged by ophthalmic examination.
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Affiliation(s)
- Vaclav Janout
- Department of Chemistry, Lehigh University , Bethlehem, Pennsylvania 18015, United States
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Shiraishi T, Nielsen PE. Nanomolar cellular antisense activity of peptide nucleic acid (PNA) cholic acid ("umbrella") and cholesterol conjugates delivered by cationic lipids. Bioconjug Chem 2012; 23:196-202. [PMID: 22243634 DOI: 10.1021/bc200460t] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Limited cellular uptake and low bioavailability of peptide nucleic acids (PNAs) have restricted widespread use of PNAs as antisense/antigene agents for cells in culture and not least for in vivo applications. We now report the synthesis and cellular antisense activity in cultured HeLa pLuc705 cells of cholesterol and cholic acid ("umbrella") derivatives of splice correction antisense PNA oligomers. While the conjugates alone were practically inactive up to 1 μM, their activity was dramatically improved when delivered by a cationic lipid transfection agent (LipofectAMINE2000). In particular, PNAs, conjugated to cholesterol through an ester hemisuccinate linker or to cholic acid, exhibited low nanomolar activity (EC(50) ∼ 25 nM). Excellent sequence specificity was retained, as mismatch PNA conjugates did not show any significant antisense activity. Furthermore, we show that increasing the transfection volume improved transfection efficiency, suggesting that accumulation (condensation) of the PNA/lipid complex on the cellular surface is part of the uptake mechanism. These results provide a novel, simple method for very efficient cellular delivery of PNA oligomers, especially using PNA-cholic acid conjugates which, in contrast to PNA-cholesterol conjugates, exhibit sufficient water solubility. The results also question the generality of using cholic acid "umbrella" derivatives as a delivery modality for antisense oligomers.
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Affiliation(s)
- Takehiko Shiraishi
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen N, Denmark.
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Cline LL, Janout V, Fisher M, Juliano RL, Regen SL. A molecular umbrella approach to the intracellular delivery of small interfering RNA. Bioconjug Chem 2011; 22:2210-6. [PMID: 21985221 DOI: 10.1021/bc200347x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of diwalled and tetrawalled molecular umbrellas have been synthesized using cholic acid, spermidine, and lysine as starting materials. Coupling of these molecular umbrellas to an octaarginine peptide afforded agents that were capable of promoting the transport of small interfering RNA to HeLa cells, as judged by the knockdown of enhanced green fluorescent protein expression. The efficiency of this knockdown was found to increase with an increasing number of facially amphiphilic walls present, and also when a cleavable disulfide linker was replaced with a noncleavable, maleimido moiety; i.e., a group that is not susceptible to thiolate-disulfide interchange. The knockdown efficiency that was observed for one tetrawalled molecular umbrella-octaargine conjugate was comparable to that observed with a commercially available transfection agent, Lipofectamine 2000, but the conjugate showed less cytotoxicity.
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Affiliation(s)
- Lauren L Cline
- Department of Chemistry, Lehigh University , Bethlehem, PA 18015, USA
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Mohamed BM, Verma NK, Prina-Mello A, Williams Y, Davies AM, Bakos G, Tormey L, Edwards C, Hanrahan J, Salvati A, Lynch I, Dawson K, Kelleher D, Volkov Y. Activation of stress-related signalling pathway in human cells upon SiO2 nanoparticles exposure as an early indicator of cytotoxicity. J Nanobiotechnology 2011; 9:29. [PMID: 21801388 PMCID: PMC3164618 DOI: 10.1186/1477-3155-9-29] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Accepted: 07/29/2011] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Nanomaterials such as SiO2 nanoparticles (SiO2NP) are finding increasing applications in the biomedical and biotechnological fields such as disease diagnostics, imaging, drug delivery, food, cosmetics and biosensors development. Thus, a mechanistic and systematic evaluation of the potential biological and toxic effects of SiO2NP becomes crucial in order to assess their complete safe applicability limits. RESULTS In this study, human monocytic leukemia cell line THP-1 and human alveolar epithelial cell line A549 were exposed to a range of amorphous SiO2NP of various sizes and concentrations (0.01, 0.1 and 0.5 mg/ml). Key biological indicators of cellular functions including cell population density, cellular morphology, membrane permeability, lysosomal mass/pH and activation of transcription factor-2 (ATF-2) were evaluated utilizing quantitative high content screening (HCS) approach and biochemical techniques. Despite the use of extremely high nanoparticle concentrations, our findings showed a low degree of cytotoxicity within the panel of SiO2NP investigated. However, at these concentrations, we observed the onset of stress-related cellular response induced by SiO2NP. Interestingly, cells exposed to alumina-coated SiO2NP showed low level, and in some cases complete absence, of stress response and this was consistent up to the highest dose of 0.5 mg/ml. CONCLUSIONS The present study demonstrates and highlights the importance of subtle biological changes downstream of primary membrane and endocytosis-associated phenomena resulting from high dose SiO2NP exposure. Increased activation of transcription factors, such as ATF-2, was quantitatively assessed as a function of i) human cell line specific stress-response, ii) SiO2NP size and iii) concentration. Despite the low level of cytotoxicity detected for the amorphous SiO2NP investigated, these findings prompt an in-depth focus for future SiO2NP-cell/tissue investigations based on the combined analysis of more subtle signalling pathways associated with accumulation mechanisms, which is essential for establishing the bio-safety of existing and new nanomaterials.
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Affiliation(s)
- Bashir Mustafa Mohamed
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
| | - Navin Kumar Verma
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
| | - Adriele Prina-Mello
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Naughton Institute, Trinity College Dublin, Dublin2, Ireland
| | - Yvonne Williams
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
| | - Anthony M Davies
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
| | - Gabor Bakos
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
| | - Laragh Tormey
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
| | - Connla Edwards
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
| | - John Hanrahan
- Glantreo Ltd., Environmental Research Institute (ERI) Building, Lee Road, Cork, Ireland
| | - Anna Salvati
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Dublin4, Ireland
| | - Iseult Lynch
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Dublin4, Ireland
| | - Kenneth Dawson
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Dublin4, Ireland
| | - Dermot Kelleher
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
| | - Yuri Volkov
- Department of clinical medicine, Institute of Molecular Medicine, Trinity College Dublin, Dublin8, Ireland
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Naughton Institute, Trinity College Dublin, Dublin2, Ireland
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Zhao XQ, Wang TX, Liu W, Wang CD, Wang D, Shang T, Shen LH, Ren L. Multifunctional Au@IPN-pNIPAAm nanogels for cancer cell imaging and combined chemo-photothermal treatment. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10277j] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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