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Recent Advances and Challenges in Nanodelivery Systems for Antimicrobial Peptides (AMPs). Antibiotics (Basel) 2021; 10:antibiotics10080990. [PMID: 34439040 PMCID: PMC8388958 DOI: 10.3390/antibiotics10080990] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/10/2021] [Accepted: 08/14/2021] [Indexed: 02/07/2023] Open
Abstract
Antimicrobial peptides (AMPs) can be used as alternative therapeutic agents to traditional antibiotics. These peptides have abundant natural template sources and can be isolated from animals, plants, and microorganisms. They are amphiphilic and mostly net positively charged, and they have a broad-spectrum inhibitory effect on bacteria, fungi, and viruses. AMPs possess significant rapid killing effects and do not interact with specific receptors on bacterial surfaces. As a result, drug resistance is rarely observed with treatments. AMPs, however, have some operational problems, such as a susceptibility to enzymatic (protease) degradation, toxicity in vivo, and unclear pharmacokinetics. However, nanodelivery systems loaded with AMPs provide a safe mechanism of packaging such peptides before they exert their antimicrobial actions, facilitate targeted delivery to the sites of infection, and control the release rate of peptides and reduce their toxic side effects. However, nanodelivery systems using AMPs are at an early stage of development and are still in the laboratory phase of development. There are also some challenges in incorporating AMPs into nanodelivery systems. Herein, an insight into the nanotechnology challenges in delivering AMPs, current advances, and remaining technological challenges are discussed in depth.
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Hess A, Prohaska JP, Doerrich SB, Trauner F, Lutter FH, Lemaire S, Wagschal S, Karaghiosoff K, Knochel P. Directed regioselective ortho, ortho'-magnesiations of aromatics and heterocycles using sBu 2Mg in toluene. Chem Sci 2021; 12:8424-8429. [PMID: 34221323 PMCID: PMC8221067 DOI: 10.1039/d1sc01777b] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/17/2021] [Indexed: 11/25/2022] Open
Abstract
Aryl azoles are ubiquitous as bioactive compounds and their regioselective functionalization is of utmost synthetic importance. Here, we report the development of a toluene-soluble dialkylmagnesium base sBu2Mg. This new reagent allows mild and regioselective ortho-magnesiations of various N-arylated pyrazoles and 1,2,3-triazoles as well as arenes bearing oxazoline, phosphorodiamidate or amide directing groups. The resulting diarylmagnesium reagents were further functionalized either by Pd-catalyzed arylation or by trapping reactions with a broad range of electrophiles (aldehydes, ketones, allylic halides, acyl chlorides, Weinreb amides, aryl halides, hydroxylamine benzoates, terminal alkynes). Furthermore, several double ortho,ortho'-magnesiations were realized in the case of aryl oxazolines, N-aryl pyrazoles as well as 2-aryl-2H-1,2,3-triazoles by simply repeating the magnesiation/electrophile trapping sequence allowing the preparation of valuable 1,2,3-functionalized arenes.
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Affiliation(s)
- Andreas Hess
- Ludwig-Maximilians-Universität München, Department Chemie Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Jan P Prohaska
- Ludwig-Maximilians-Universität München, Department Chemie Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Sabrina B Doerrich
- Ludwig-Maximilians-Universität München, Department Chemie Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Florian Trauner
- Ludwig-Maximilians-Universität München, Department Chemie Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Ferdinand H Lutter
- Ludwig-Maximilians-Universität München, Department Chemie Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Sébastien Lemaire
- Janssen Pharmaceutica, Chemical Process Research & Development Turnhoutseweg 30 B-2340 Beerse Belgium
| | - Simon Wagschal
- Janssen Pharmaceutica, Chemical Process Research & Development Hochstrasse 201 8200 Schaffhausen Switzerland
| | - Konstantin Karaghiosoff
- Ludwig-Maximilians-Universität München, Department Chemie Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Paul Knochel
- Ludwig-Maximilians-Universität München, Department Chemie Butenandtstrasse 5-13, Haus F 81377 München Germany
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Mukhamedov N, Wubulikasimu A, Rustamova N, Nuerxiati R, Mirzaakhmedov S, Ishimov U, Ziyavitdinov J, Yili A, Aisa HA. Synthesis and Characterization of Novel Chickpea Protein Hydrolysate-Vanadium Complexes Having Cell Inhibitory Effects on Lung Cancer A549 Cells Lines. Protein J 2021; 40:721-730. [PMID: 33993411 DOI: 10.1007/s10930-021-09979-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2021] [Indexed: 10/21/2022]
Abstract
Designing new types of drugs with preferred properties against cancer is a great issue for scientists dealing with synthesis and study of biological activity. Several organometallic compounds used in chemotherapy reveal side effects. Peptides from edible sources having no side effects may play a transport role in the delivery of anticancer metal ions into targeted tumor cells. For the last two decades, peptide-metal complexes have been considered as potential anticancer agents. In this work, oxovanadium complexes of peptides from Chickpea (Cicer arietinum L.) seeds' protein hydrolysate were investigated. The albumin fraction of Chickpea seeds protein was hydrolyzed with a combination of enzymes papain, trypsin, and alcalase. The hydrolysate was combined with vanadyl ions and obtained oxovanadium complexes were studied by FTIR, SEM-EDX, and TG-DSC analyses, and cell inhibition activity against A549 cells was detected by MTT Assay. In a result, activity of the complexes (IC50 = 14.39 µg/mL) increased 1.7-fold compared to the activity of inorganic salt of vanadium (IC50 = 24.75 µg/mL) against A549 cells. The complexes (CPH-V) were fractionated through Sephadex G-15, and the second active fraction, named CPH-V G15-II was studied by nano-Q-TOF LC/MS. Nine peptides with a molecular mass range of 437-1864 Da were identified. Seven of them were theoretically considered as cell-penetrating peptides. These results could serve first steps for deeper fundamental research on food-derived peptide-vanadium complexes.
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Affiliation(s)
- Nurkhodja Mukhamedov
- Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | - Atikan Wubulikasimu
- Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | - Nigora Rustamova
- Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | - Rehebati Nuerxiati
- Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, 100039, People's Republic of China
| | | | - Uchqun Ishimov
- Institute of Bioorganic Chemistry, Tashkent Uzbek Academy of Sciences, Tashkent, Uzbekistan
| | | | - Abulimiti Yili
- Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China. .,State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China.
| | - Haji Akber Aisa
- Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China.,State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China
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Huang RZ, Jin L, Yao GY, Dai WL, Huang XC, Liao ZX, Wang HS. Synthesis and molecular docking study of novel alizarin derivatives containing phosphoryl amino acid moiety as potential antitumor agents. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1938-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang Y, Chen BZ, Liu YJ, Wu ZM, Guo XD. Application of mesoscale simulation to explore the aggregate morphology of pH-sensitive nanoparticles used as the oral drug delivery carriers under different conditions. Colloids Surf B Biointerfaces 2017; 151:280-286. [DOI: 10.1016/j.colsurfb.2016.12.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 12/06/2016] [Accepted: 12/18/2016] [Indexed: 11/16/2022]
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Honorio-França AC, Nunes GT, Fagundes DLG, de Marchi PGF, Fernandes RTDS, França JL, França-Botelho ADC, Moraes LCA, Varotti FDP, França EL. Intracellular calcium is a target of modulation of apoptosis in MCF-7 cells in the presence of IgA adsorbed to polyethylene glycol. Onco Targets Ther 2016; 9:617-26. [PMID: 26893571 PMCID: PMC4745958 DOI: 10.2147/ott.s99839] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
PURPOSE Clinical and epidemiological studies have indicated that breastfeeding has a protective effect on breast cancer risk. Protein-based drugs, including antibodies, are being developed to attain better forms of cancer therapy. Secretory IgA (SIgA) is the antibody class in human breast milk, and its activity can be linked to the protective effect of breastfeeding. The aim of this study was to investigate the effect of polyethylene glycol (PEG) microspheres with adsorbed SIgA on MCF-7 human breast cancer cells. METHODS The PEG microspheres were characterized by flow cytometry and fluorescence microscopy. The MCF-7 cells were obtained from American Type Culture Collection. MCF-7 cells were pre-incubated for 24 hours with or without SIgA (100 ng/mL), PEG microspheres or SIgA adsorbed in PEG microspheres (100 ng/mL). Viability, intracellular calcium release, and apoptosis in MCF-7 cells were determined by flow cytometry. RESULTS Fluorescence microscopy and flow cytometry analyses revealed that SIgA was able to adsorb to the PEG microspheres. The MCF-7 cells that were incubated with PEG microspheres with adsorbed SIgA showed decreased viability. MCF-7 cells that were incubated with SIgA or PEG microspheres with adsorbed SIgA had increased intracellular Ca(2+) levels. In the presence of SIgA, an increase in the percentage of apoptotic cells was observed. The highest apoptosis index was observed when the cells were treated with PEG microspheres with adsorbed SIgA. CONCLUSION These data suggest that colostral SIgA adsorbed to PEG microspheres has antitumor effects on human MCF-7 breast cancer cells and that the presence of large amounts of this protein in secreted breast milk may provide protection against breast tumors in women who breastfed.
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Affiliation(s)
| | - Gabriel Triches Nunes
- Institute of Biological and Health Science, Federal University of Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - Danny Laura Gomes Fagundes
- Institute of Biological and Health Science, Federal University of Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | | | | | - Juliana Luzia França
- Institute of Biological and Health Science, Federal University of Mato Grosso, Barra do Garças, Mato Grosso, Brazil; Institute of Health Sciences, University Center of Planalto de Araxá, Araxá, Minas Gerais, Brazil
| | | | | | - Fernando de Pilla Varotti
- Campus Centro Oeste Dona Lindu - Federal University of São João Del Rei, Divinópolis, Minas Gerais, Brazil
| | - Eduardo Luzía França
- Institute of Biological and Health Science, Federal University of Mato Grosso, Barra do Garças, Mato Grosso, Brazil; Campus Centro Oeste Dona Lindu - Federal University of São João Del Rei, Divinópolis, Minas Gerais, Brazil
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Abstract
The present study aimed to entrap and characterize the morphology and antitumor effects of a dermaseptin (DStomo01) peptide in chitosan nanoparticles, in vitro. DStomo01 nanoparticles showed moderate polydispersivity, excellent colloidal stability, and slow release. It was noted that free DStomo01 induced DNA fragmentation and mitochondrial hyperpolarization in HeLa cells. However, when entrapped in chitosan nanoparticles, DStomo01 was slightly more active against HeLa cells than the free peptide. In conclusion, the present sustained release system was efficient in entrapping the peptide and reducing tumor cell viability, which are promising steps for future studies involving specific targeting of nanoparticles and in-vivo treatments.
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Alavi SE, Mansouri H, Esfahani MKM, Movahedi F, Akbarzadeh A, Chiani M. Archaeosome: as new drug carrier for delivery of Paclitaxel to breast cancer. Indian J Clin Biochem 2013; 29:150-3. [PMID: 24757295 DOI: 10.1007/s12291-013-0305-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 01/24/2013] [Indexed: 01/25/2023]
Abstract
In the present study, paclitaxel was archaeosomed to reduce side effects and improve its therapeutic index. Carriers have made a big evolution in treatment of many diseases in recent years. Lipid carriers are of special importance among carriers. Archaeosome is one of the lipid carriers. Paclitaxel is one of the drugs used to treat breast cancer which has some unwanted side effects despite its therapeutic effects. Archaeosomes were extracted from methanogenic archi bacteria and synthesized with a certain ratio of paclitaxel in PBS. The mean diameter of archaeosomal paclitaxel was measured by Zeta sizer instrument, Drug releasing of archaeosomal paclitaxel was examined within 26 h which results showed that the most drug releasing occurs during first 3 h. The cytotoxicity effect of archaeosomal paclitaxel on breast cancer's cell line was evaluated by MTT assay which results showed that the cytotoxicity effect of archaeosomal paclitaxel on breast cancer's cell line is more than that of the standard paclitaxel formulation. The results indicated that new drug delivery of paclitaxel using archaeosome, increases the therapeutic index of the drug.
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Affiliation(s)
- Seyed Ebrahim Alavi
- Department of Chemical Engineering, Lamerd Branch, Islamic Azad University, Lamerd, Iran ; Pilot Biotechnology Department, Pasteur Institute of Iran, No 358, 12 Farvardin Street, Jomhoori Avenue, 13169-43551 Tehran, Iran
| | - Hamidreza Mansouri
- Department of Chemical Engineering, Lamerd Branch, Islamic Azad University, Lamerd, Iran
| | - Maedeh Koohi Moftakhari Esfahani
- Department of Chemical Engineering, Lamerd Branch, Islamic Azad University, Lamerd, Iran ; Pilot Biotechnology Department, Pasteur Institute of Iran, No 358, 12 Farvardin Street, Jomhoori Avenue, 13169-43551 Tehran, Iran
| | - Fatemeh Movahedi
- Department of Chemical Engineering, Lamerd Branch, Islamic Azad University, Lamerd, Iran ; Pilot Biotechnology Department, Pasteur Institute of Iran, No 358, 12 Farvardin Street, Jomhoori Avenue, 13169-43551 Tehran, Iran
| | - Azim Akbarzadeh
- Pilot Biotechnology Department, Pasteur Institute of Iran, No 358, 12 Farvardin Street, Jomhoori Avenue, 13169-43551 Tehran, Iran
| | - Mohsen Chiani
- Pilot Biotechnology Department, Pasteur Institute of Iran, No 358, 12 Farvardin Street, Jomhoori Avenue, 13169-43551 Tehran, Iran
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Dadgar N, Alavi SE, Esfahani MKM, Akbarzadeh A. Study of toxicity effect of pegylated nanoliposomal artemisinin on breast cancer cell line. Indian J Clin Biochem 2013; 28:410-2. [PMID: 24426245 DOI: 10.1007/s12291-013-0306-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Accepted: 01/31/2013] [Indexed: 11/30/2022]
Abstract
Nano carriers have greatly revolutionized the treatment of most diseases recently. One of these nano carriers, liposomes, has got particular significance. On the other hand, Artemisinin which is used as an effective anticancer drug has some side effects. To reduce such side effects, liposomes can be employed. In order to prepare pegylated nanoliposomal artemisinin, particular proportions of phosphatidylcholine, polyethylene glycol 2000 and artemisinin were combined. As a result, the mean diameter of nano liposomes is 455 nm. Besides, the encapsulation efficiency and the drug release from pegylated nanoliposomes for pegylated nanoliposomal artemisinin are respectively 91.62 ± 3.5 and 5.17 %. The results also show that IC50 of the produced formulation is less than that of the standard drug. This study reveals that the amount of artemisinin cytotoxicity compared to standard drug is increased by pegylated nanoliposomal formulation.
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Affiliation(s)
- Neda Dadgar
- Department of Agricultural Biotechnology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Seyed Ebrahim Alavi
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran ; Department of Pilot Biotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Maedeh Koohi Moftakhari Esfahani
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran ; Department of Pilot Biotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Azim Akbarzadeh
- Department of Pilot Biotechnology, Pasteur Institute of Iran, Tehran, Iran
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Zhang L, Jeong YI, Zheng S, Suh H, Kang DH, Kim I. Fabrication of microspheres via solvent volatization induced aggregation of self-assembled nanomicellar structures and their use as a pH-dependent drug release system. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:65-74. [PMID: 23215353 DOI: 10.1021/la303634y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A series of oleamide derivatives, (C(18)H(34)NO)(2)(CH(2))(n) [n = 2 (1a), 3 (1b), 4 (1c), or 6 (1d); C(18)H(34)NO = oleic amide fragment] and (C(18)H(34)NO)(CH(2))(6)NH(2) (2), have been synthesized and their self-assembly is investigated in ethanol/water media. Self-assembly of 1a and 1b in ethanol/water (1/0.1 v/v) solution (5 mg mL(-1)) yields microspheres (MSs) with the average diameter ∼10 μm via a gradual temperature reduction and solvent volatilization process. Under the same self-assembly conditions, microrods (average diameter ∼6 μm and several tens of micrometers in length), micronecklace-like, and shape-irregular microparticles are formed from the self-assembly of 1c, 1d, and 2, respectively. The kinetics of evolution for their self-assemblies by dynamic light scattering technique and in situ observation by optical microscopy reveals that the microstructures formation is from a well-behaved aggregation of nanoscale micelles induced by solvent volatilization. The FT-IR and temperature-dependent (1)H-NMR spectra demonstrate the hydrogen bonding force and π-π stacking, which drove the self-assembly of all oleamide derivatives in ethanol/water. Among the fabricated microstructures, the MSs from 1a exhibit the best dispersity, which thus have been used as a scaffold for the in vitro release of doxorubicin. The results demonstrate a pH-sensitive release process, enhanced release specifically at low pH 5.2.
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Affiliation(s)
- Lidong Zhang
- The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, Pusan 609 735, Korea
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Gu Y, Sun W, Wang G, Fang N. Single Particle Orientation and Rotation Tracking Discloses Distinctive Rotational Dynamics of Drug Delivery Vectors on Live Cell Membranes. J Am Chem Soc 2011; 133:5720-3. [DOI: 10.1021/ja200603x] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Kukowska-Kaszuba M, Dzierzbicka K, Serocki M, Skladanowski A. Solid Phase Synthesis and Biological Activity of Tuftsin Conjugates. J Med Chem 2011; 54:2447-54. [DOI: 10.1021/jm200002s] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Magdalena Kukowska-Kaszuba
- Department of Organic Chemistry and ‡Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicza Street, 80-233 Gdansk, Poland
| | - Krystyna Dzierzbicka
- Department of Organic Chemistry and ‡Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicza Street, 80-233 Gdansk, Poland
| | - Marcin Serocki
- Department of Organic Chemistry and ‡Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicza Street, 80-233 Gdansk, Poland
| | - Andrzej Skladanowski
- Department of Organic Chemistry and ‡Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicza Street, 80-233 Gdansk, Poland
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Preparation and Characterization of Stealth Archaeosomes Based on a Synthetic PEGylated Archaeal Tetraether Lipid. JOURNAL OF DRUG DELIVERY 2011; 2011:396068. [PMID: 21603209 PMCID: PMC3095417 DOI: 10.1155/2011/396068] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Revised: 01/04/2011] [Accepted: 01/20/2011] [Indexed: 12/20/2022]
Abstract
The present studies were focused on the formation and characterization of sterically stabilized archaeosomes made from a synthetic PEGylated archaeal lipid. In a first step, a synthetic archaeal tetraether bipolar lipid was functionalized with a poly(ethylene glycol), PEG, and (PEG(45)-Tetraether) with the aim of coating the archaeosome surface with a sterically stabilizing hydrophilic polymer. In a second step, Egg-PC/PEG(45)-Tetraether (90/10 wt%) archaeosomes were prepared, and their physicochemical characteristics were determined by dynamic light scattering (size, polydispersity), cryo-TEM (morphology), and by high-performance thin layer chromatography (lipid composition), in comparison with standard Egg-PC/PEG(45)-DSPE formulations. Further, a fluorescent dye, the carboxyfluorescein, was encapsulated into the prepared archaeosomes in order to evaluate the potential of such nanostructures as drug carriers. Release studies have shown that the stability of Egg-PC/PEG(45)-Tetraether-based archaeosomes is significantly higher at 37°C than the one of Egg-PC/PEG(45)-DSPE-based liposomes, as evidenced by the slower release of the dye encapsulated into PEGylated archaeosomes. This enhanced stability could be related to the membrane spanning properties of the archaeal bipolar lipid as already described with natural or synthetic tetraether lipids.
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Nakase I, Kobayashi S, Futaki S. Endosome-disruptive peptides for improving cytosolic delivery of bioactive macromolecules. Biopolymers 2011; 94:763-70. [PMID: 20564044 DOI: 10.1002/bip.21487] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Along with recent advances in therapeutic technologies based on biomacromolecules, including genes, oligonucleotides, and proteins, the development of technologies for improving the efficiency of the delivery of these therapeutic molecules into cells, more specifically into the cytosol and nucleus, is significantly required. Cell membranes are major impediments to the delivery of therapeutic macromolecules into cells. These macromolecules are usually taken up by the cells via endocytosis, and their translocation from endosomes to the cytosol is a critical step to determine their therapeutic effects. Many viruses and bacterial toxins use endocytic pathways to invade the host mammalian cells, and some of these pathogens have the ability to facilitate their endosomal escape into the cytosol by pH-induced alteration in their component proteins that leads to the disruption of the endosomal membranes and the eventual membrane fusions. To simulating these functions, endosome-disruptive peptides have been used for the intracellular delivery of biomacromolecules to accelerate their endosomal escape by sensing the endosomal acidification. In this review, current approaches for the intracellular delivery using these endosome-disruptive peptides are surveyed.
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Affiliation(s)
- Ikuhiko Nakase
- Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
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15
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Lu Q, Wang X, Hu X, Cebe P, Omenetto F, Kaplan DL. Stabilization and release of enzymes from silk films. Macromol Biosci 2010; 10:359-68. [PMID: 20217856 DOI: 10.1002/mabi.200900388] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A significant challenge remains to protect protein drugs from inactivation during production, storage, and use. In the present study, the stabilization and release of horseradish peroxidase (HRP) in silk films was investigated. Water-insoluble silk films were prepared under mild aqueous conditions, maintaining the activity of the entrapped enzyme. Depending on film processing and post-processing conditions, HRP retained more than 90% of the initial activity at 4 degrees C, room temperature and 37 degrees C over two months. The stability of protein drugs in silk films is attributed to intermolecular interactions between the silk and the enzymes, based on Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). The unique structural feature of silk molecules, periodic hydrophobic-hydrophilic domains, enabled strong interactions with proteins. The entrapped protein was present in two states, untrapped active and trapped inactive forms. The ratio between the two forms varied according to processing conditions. Proteolytic degradation and dissolution of the silk films resulted in the release of the bound enzyme which was otherwise not released by diffusion; enzyme recovered full activity upon release. There was a linear relationship between silk degradation/dissolution and the release of entrapped enzyme. Modifying the secondary structure of the silk matrix and the interactions with the non-crystalline domains resulted in control of the film degradation or dissolution rate, and therefore the release rate of the entrapped enzyme. Based on the above results, silk materials are an intriguing carrier for proteins in terms of both retention of activity and controllable release kinetics from the films.
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Affiliation(s)
- Qiang Lu
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
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Comparison between a linear ion trap and a triple quadruple MS in the sensitive detection of large peptides at femtomole amounts on column. J Sep Sci 2010; 33:2478-88. [DOI: 10.1002/jssc.201000157] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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du Plessis L, Lubbe J, Strauss T, Kotzé A. Enhancement of nasal and intestinal calcitonin delivery by the novel Pheroid™ fatty acid based delivery system, and by N-trimethyl chitosan chloride. Int J Pharm 2010; 385:181-6. [DOI: 10.1016/j.ijpharm.2009.10.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2009] [Revised: 10/14/2009] [Accepted: 10/14/2009] [Indexed: 11/26/2022]
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Bai KB, Láng O, Orbán E, Szabó R, Köhidai L, Hudecz F, Mezö G. Design, Synthesis, and In Vitro Activity of Novel Drug Delivery Systems Containing Tuftsin Derivatives and Methotrexate. Bioconjug Chem 2008; 19:2260-9. [DOI: 10.1021/bc800115w] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Katalin B. Bai
- Research Group of Peptide Chemistry, Hungarian Academy of Sciences, and Department of Organic Chemistry, Eötvös L. University, P.O. Box 32, 1518 Budapest 112, Hungary, and Department of Genetics, Cell and Immunobiology, Semmelweis University, Budapest, Nagyvárad tér 4. H-1089, Hungary
| | - Orsolya Láng
- Research Group of Peptide Chemistry, Hungarian Academy of Sciences, and Department of Organic Chemistry, Eötvös L. University, P.O. Box 32, 1518 Budapest 112, Hungary, and Department of Genetics, Cell and Immunobiology, Semmelweis University, Budapest, Nagyvárad tér 4. H-1089, Hungary
| | - Erika Orbán
- Research Group of Peptide Chemistry, Hungarian Academy of Sciences, and Department of Organic Chemistry, Eötvös L. University, P.O. Box 32, 1518 Budapest 112, Hungary, and Department of Genetics, Cell and Immunobiology, Semmelweis University, Budapest, Nagyvárad tér 4. H-1089, Hungary
| | - Rita Szabó
- Research Group of Peptide Chemistry, Hungarian Academy of Sciences, and Department of Organic Chemistry, Eötvös L. University, P.O. Box 32, 1518 Budapest 112, Hungary, and Department of Genetics, Cell and Immunobiology, Semmelweis University, Budapest, Nagyvárad tér 4. H-1089, Hungary
| | - László Köhidai
- Research Group of Peptide Chemistry, Hungarian Academy of Sciences, and Department of Organic Chemistry, Eötvös L. University, P.O. Box 32, 1518 Budapest 112, Hungary, and Department of Genetics, Cell and Immunobiology, Semmelweis University, Budapest, Nagyvárad tér 4. H-1089, Hungary
| | - Ferenc Hudecz
- Research Group of Peptide Chemistry, Hungarian Academy of Sciences, and Department of Organic Chemistry, Eötvös L. University, P.O. Box 32, 1518 Budapest 112, Hungary, and Department of Genetics, Cell and Immunobiology, Semmelweis University, Budapest, Nagyvárad tér 4. H-1089, Hungary
| | - Gábor Mezö
- Research Group of Peptide Chemistry, Hungarian Academy of Sciences, and Department of Organic Chemistry, Eötvös L. University, P.O. Box 32, 1518 Budapest 112, Hungary, and Department of Genetics, Cell and Immunobiology, Semmelweis University, Budapest, Nagyvárad tér 4. H-1089, Hungary
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19
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Interaction of horseradish peroxidase with Langmuir monolayers of phospholipids. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2008.01.039] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Singh VK, Jia Z. Targeting synuclein-gamma to counteract drug resistance in cancer. Expert Opin Ther Targets 2008; 12:59-68. [PMID: 18076370 DOI: 10.1517/14728222.12.1.59] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Expression of synuclein-gamma (SNCG) protein is elevated in the advanced stages of many types of cancers, including ovarian, lung, liver, esophagus, colon, prostate and, in particular, breast. In breast carcinoma, SNCG is causatively linked to stimulated proliferation, metastasis and drug resistance. OBJECTIVE To establish SNCG as a potential therapeutic target and to discuss clinical use of SNCG inhibiting peptide. METHODS This review focuses on the plausible mechanisms of SNCG activity, SNCG mediated drug resistance and its inhibition. RESULTS/CONCLUSION Evidence based research shows that the aberrant expression of SNCG has a strong correlation with breast cancer progression and poor clinical outcome. A peptide based inhibitor counters activity of SNCG, which may be developed as an adjuvant therapy.
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Affiliation(s)
- Vinay K Singh
- CIHR Post-doctoral Fellow in Transdisciplinary Cancer Research, Queen's University, Department of Biochemistry, Kingston, Ontario, K7L 3N6, Canada
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21
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Nieh MP, Katsaras J, Qi X. Controlled release mechanisms of spontaneously forming unilamellar vesicles. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2008; 1778:1467-71. [PMID: 18394425 DOI: 10.1016/j.bbamem.2008.02.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2007] [Revised: 02/26/2008] [Accepted: 02/26/2008] [Indexed: 11/17/2022]
Abstract
Spontaneously forming small unilamellar vesicles (SULVs) are easy to prepare and show great promise for use in delivering therapeutic payloads. We report of SULVs made up of the ternary phospholipid mixture, dimyristoyl-phosphatidylcholine (DMPC), dihexanoyl-phosphatidylcholine (DHPC) and dimyristoyl-phosphatidylglycerol (DMPG), which have been characterized by small angle neutron scattering (SANS). These low-polydispersity (0.14-0.19) SULVs range in size (i.e., radius) from 110 to 215 A and are capable of entrapping, and subsequently releasing, hydrophilic molecules (e.g., fluorescent dyes and quenchers) in a controlled fashion over two different temperature ranges. The low-temperature release mechanism involves the SULVs transforming into discoidal micelles, with an onset temperature (T(o)) of ~32 degrees C, while the high-temperature release mechanism is more gradual, presumably the result of defects formed through the continuous dissolution of DHPC into solution. Both of these mechanisms differ from other, previously reported thermosensitive liposomes.
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Affiliation(s)
- Mu-Ping Nieh
- Canadian Neutron Beam Centre, Steacie Institute for Molecular Sciences, National Research Council Canada, Chalk River Laboratory, Chalk River, ON, Canada.
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22
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Clark JCM, Thomas DM, Choong PFM, Dass CR. RECK--a newly discovered inhibitor of metastasis with prognostic significance in multiple forms of cancer. Cancer Metastasis Rev 2008; 26:675-83. [PMID: 17828469 DOI: 10.1007/s10555-007-9093-8] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The RECK (reversion-inducing cysteine rich protein with Kazal motifs) protein was initially discovered by its ability to induce reversion in ras-activated fibroblasts. The key action of RECK is to inhibit matrix metalloproteinases (MMPs) involved in breakdown of the extracellular matrix (ECM), and angiogenesis-namely MMP-2, MMP-9 and MTP-1. To this effect, it plays important physiological roles in embryogenesis and vasculogenesis. Additionally, it has a significant effect on tumorigenesis by limiting angiogenesis and invasion of tumours through the ECM. RECK has been studied in the context of a number of human tumours including colorectal, breast, pancreas, gastric, hepatocellular, prostate, and non-small cell lung carcinoma. In many of these tumours, RECK is down-regulated most likely as a result of inhibition at the Sp1 promoter site. MMP-2 and MMP-9 generally show an inverse association with RECK expression, but there are exceptions to this rule. Likewise, a reduction in tumour microvascular density (MVD) and VEGF have also been correlated with increased RECK levels, although more studies are required to define this effect. The predominant finding across all human tumour studies is a significantly improved prognosis (due to decreased invasion and metastasis) in tumours with preserved RECK expression. Although further research is required, RECK is a promising prognostic marker and potential therapeutic agent in multiple cancers.
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Affiliation(s)
- Jonathan C M Clark
- Department of Orthopaedics, St. Vincent's Hospital, University of Melbourne, Melbourne, Australia
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23
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Bouzin C, Feron O. Targeting tumor stroma and exploiting mature tumor vasculature to improve anti-cancer drug delivery. Drug Resist Updat 2007; 10:109-20. [PMID: 17452119 DOI: 10.1016/j.drup.2007.03.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2007] [Revised: 03/06/2007] [Accepted: 03/06/2007] [Indexed: 02/08/2023]
Abstract
The identification of a critical role of tumour stroma in the regulation of tumour interstitial fluid pressure and the simultaneous discovery of the impact of anti-angiogenic drugs on tumour hemodynamics have provided new potential for improving tumour delivery of anti-cancer drugs. Here, we review the most recent studies investigating how tumour-associated fibroblasts and macrophages as well as the extracellular matrix itself may be targeted to facilitate delivery of both low-molecular weight drugs and macromolecules. In addition, we summarize the current understanding of the use of vasoactive compounds, radiotherapy and vascular-disrupting agents as potential adjuvants to maximize tumour delivery of anti-cancer drugs. The impact of these strategies on the diffusive and convective modes of drug transport is discussed in the light of Fick's and Starling's laws. Finally, we discuss how transcytosis through caveolae may also be exploited to optimize the selective delivery of conventional chemotherapy to the subendothelial tumour cell compartment.
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Affiliation(s)
- Caroline Bouzin
- UCL Medical School, Unit of Pharmacology and Therapeutics (FATH5349), Angiogenesis and Cancer Research Group, 52 Avenue E. Mounier, B-1200 Brussels, Belgium
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